CAMERA PHOTOMETER

www.toptical.com.tw 02-2346-1510 toptical@ms17.hinet.net

A Photometer

Lasers·Light Sources

Solar Cells·Lighting

CCD Cameras

·Imaging

SpectroscopesTests·Instruments

Semiconductors·Communications

Components·Mechanics·

Positioning

Detection·Sensors

ComponentsLens SIGMA18-50mmF2.8EXDCMacro(incl.lenshoodanddustcover)Transport MobilitycaseSamsonite+carryingstrap TransportcaseTechnoTeam Widestrap[EW-100DBII]Powersupply 2Lithium-Ionaccu[LP-E5] BatterychargerLC-E5orE5E+powerplug ACadapterkit[ACKE5] Compactmainsadapter[CA-PS700] +powercordDCcoupler[DR-E5]Cable/Interface Videocable[VC-100] USBInterfacecable[IFC-200U]Memorycard SDHCcard4GBSoftware EOSDigitalSolution(CDROM) LMK2000 measuringsoftware(CDROM)Manual/Certification ManualCanonEOS450D ManualLMKmobileadvanced ManualLMK2000Software Softwaremanual(PDF) CalibrationcertificateOptional additionalSDHCcard RemotecontrolRC-5 Tripod

CAMERA PHOTOMETERbased on the Canon EOS 450Ddigital reflex camera

Applications• Indoormeasurements,forexampleinofficesanddesktopareasinoffices.• Fastandeasydeterminationof luminances inoutdoorareas.Forexample the illuminationofpublicsquaresandplacesintheurbansurrounding.

• Reviewtheilluminationonfaçadesandofstreetlightingfixturesandotherpublictrafficways.

camera Canon450D(digital/reflex)lens Sigma18-50mmF2.8EXDCMacro

Obtain the parameters for glare and daylight(luminance,verticalandcylindrical illuminances,UGR,DGI,daylightquotientD,uniformity).

Glare ratingonoutdoor luminaires (luminance,verticalilluminance,veilingluminance,uniformity).

Evaluate the illuminationofstreetsconsideringvalidstandards (luminance,vertical illuminance,lengthwiseuniformity,TI-value).

ElectronicsSensor/Resolution CMOSCanonAPS-Cwith4272(H)x2848(V)Fileformat 14BitRAW-datawithBayerstructureuncompressedPC-Interface USB2.0Luminanceresolution 2136(H)x1424(V)Dynamicresolution Singlemeasurement:1:4000 High-Dynmeasurement:1:32000(1/1250s<ti<8s)

ConfigurationAperturevalues F4-F11(calibrated)in1/3stepsFocus(measuringdistance) >ca.130mm(automaticfocus/manualfocus)Focallength/Viewingangle focallength18mm:65°(H)x45°(V) focallength50mm:28°(H)x19°(V)

Lightsensitivity (typicalaccuracyrating)

Exposuretime 30sec.-1/4000sec.AEB +/-2EVin1/3steps(manual)

Blende 4 4 11ISO 100 1600 100ti=0,001s 20kcd/m² 1200cd/m² 140kcd/m²ti=3,0s 6cd/m² 0,36cd/m² 50cd/m²

A Photometer

CCD Cameras

·Imaging

Positioning

Detection·Sensors

Measurement parameterSelectionofmeasuringrange Selectingaperture,exposuretimeandundISO-speedV(λ)-matching numericaltransformationfromR,G,B-sensordataCalibrationuncertaintyΔLin% ΔL=2,5%RepeatabilityΔLin%

UniformityΔLin%MeasuringuncertaintyΔLin% ΔL=2%(forstandardilluminantA)

Ti\Av 4 5.6 8 110,25 ms 3,1 3,5 3,7 4.32,5 ms 1,5 1,8 2,0 2,725 ms 1,3 1,7 1,9 2,50,25 s 1,3 1,7 1,9 2,52,5 s 1,3 1,7 1,9 2,5

Ti\Av 4 5.6 8 110,25 ms 7,6 8,0 8,2 8,82,5 ms 6,0 6,3 6,5 7,225 ms 5,8 6,2 6,4 7,00,25 s 5,8 6,2 6,4 7,02,5 s 5,8 6,2 6,4 7,0

Operating dataMemorycard SDHCcardOperatingsystem Windows2000/XPandWindowsVistaMeasuringsoftware LMK2000

Duties

DeterminationoftheTIvalueforlightingfixturesGlareassessmentaccordingUGRstandard

VIDEO PHOTOMETERIMAGING LIGHT ANDCOLOUR MEASURING TECHNIQUEIntroductionThespatially resolvedanalysisof light sourcesand illuminatedscenesisgettingmoreandmoreimportant.Thecomplexevaluationofthosescenesrequirestoknowtheluminancedistributionwithinthewholefieldofvieworatleastinmanyselectedpartsofit.Solving thenecessarymeasuring tasksbymeansofmeasuringdevicesworkingpointbypointeither takesanenormousamountoftimeor ispossibleonlywithinacoarserastergridor isnotpossibleatall.Thus,thedevelopmentofspatiallyresolvedradiationreceivers,inparticularCCDmatrixcameras,hasenabled theuser tosolvemeasuringproblemssuchasmeasurements forglareevaluationaccording to theUGRmethod, theanalysisofvisibilityconditionsin theroad trafficatnight, immissionevaluationsofglaresources,thedeterminationofcontrasts in illuminationsituations(workplace)ordirectlyon lightsources(e.g. lamps/ luminaires,displays,nightdesign,indicators).• measuringofluminousandilluminatedsurfaces• determinationofluminousandbackground-litsymbols• dataforsimulationsinthedevelopmentoflamps,luminairesandheadlamps• capturingofcomplexilluminationandlightdistributionsituations• cataloguingandpresentation

Advantages• complexevaluationofluminousandilluminatedscenesbymeansofthephotographofanimageresolvedluminancedistribution

• simultaneousrecordingofabignumberofconnectedmeasuringdata• easydataanalysis(ataglance)

Result data• luminancedistributionsinmeasuringimagesL(x,y)• derivedlighting-engineeringparameterssuchasilluminancedistributionE(x,y)andluminousintensitydistributionI(x,y)

• luminancedatainvariousformats• statisticaldataforbeingusedincalculationprograms(e.g.EXCEL®,MatLAB®,LabVIEW®)Technical dataSensor: CCD-imagingmatrixsystemStandardresolution 1380x1030PixelHigherresolution 2448x2050Pixel 4008x2672Pixel 4008x4008PixelResolution(dynamic): Singlepicturemeasurement: 1:1100(~61dB) Multipicturemeasurement: 1:3600(~71dB) HighDynamicmeasurement: 1:10000000(~140dB) A/Dconversion: 12/14BitMeasurementtime: from1to15sec.fordifferentluminances,dependingonadjustedexposuretimeMeasurementaccuracy:ΔL<3%(forstandardilluminantA) Δx,y<0.0020(forstandardilluminantA)Spectralmatching withfullsizefiltermatchedtoV(l)-functionformeasuringluminances arrangedwithX(l)-,V(l)-andZ(l)-filterformeasuringcolourvalues;additionallyC(l)-, V´(l)-,BLH(bluelighthazard)andIR-filterareavailable (allinallthefilterwheeloffers6positions)

A Photometer

CCD Cameras

·Imaging

Positioning

Detection·Sensors

APPLICATIONSMeasuring luminance distributionsThemeasurementof luminancedistributionsL(x,y)allows thecomplexevaluationofnumerous lighting-engineeringdevices. (lamps, luminaires,projectorsand lightcontrolsystems)aswellas theevaluationof illuminationscenes.The imaging luminancemeasuring technologyprovides theacquisitionofbothphotometricparametersandgeometricaldata,thusallowingtheusertodeterminefurtherlighting-engineeringquantities(luminousintensity,illuminance).Fordescribing lighting-engineeringobjects,notonlysimulationdatabutalsovariousmeasuringdataarenecessary:• descriptionof luminousand illuminatedsurfacesof lampsand lighting fixturesby their luminancedistributionsL(x,y)

• glare assessment (e.g. according to theUGRstandard)

• determinationof contrastsandspatial contrastdistributions

• determinationof the illuminancedistributionE(x,y)on illuminatedsurfaces (withdiffusely reflectingLambertcharacteristic)bymeansoftheluminancedistribution

Luminancedistribution

Illuminacedistribution MeasurementofcoloredLED's

Colorimetric measuring dataTheimagingmeasurementanddeterminationofcolourandchromaticityvalues, forexampleof lampsandlightingfixtures, isgainingmoreandmore importance.UsingtheLMKcolorcameraadaptedtothecolourmatchingfunctionsof the2°standardCIEobserver(CIE1931)throughafilterwheel,notonly luminancescanbedeterminedbutalso tristimulusvalues.Thispermits the imagingmeasurementofchromaticitycoordinates,whichcanbegivenindifferentcolourspaces.So it ispossible tosolve tasksa lot fastercomparedwithclassicalcolourmeasuring techniques.Thefollowingtaskscanbecited:• descriptionof thecolourdistributionon luminousandilluminated surfacesand symbols bymeansof thechromaticitycoordinatesx,y

• determinationof thedominantwavelengthλdomandthecorrelatedcolour temperature(CCTinKelvin)ofLEDsandlamps

Glareweightingonvenetianblindsandsunshutters

Symbolmeasuring

Night designThecockpitandnightdesign (automobile industryanditssupply industry,avionics),offersmanifoldapplicationsof thespatiallyresolved luminanceandcolourmeasuringtechnology.• brightnessanduniformityofsymbolilluminations• colourrenderingofthefunctionalillumination• contrastdistributionondisplays

For thispurpose, theTechnoTeamcompanyhasdesignedspecialsoftwaresolutions for recordingandevaluatinglowluminancesofsmallestsymbols,forexamplewiththesymbolobjectformeasuringthemeanluminanceusingadaptivealgorithmstodetermineluminancethresholds,thusofferinganumberofadaptedsolutions.

Display measuringThe imaging light and colormeasuring technology isexceptionallywellsuitableforanalysingoralsocheckingtherenderingcharacteristicsandquality featuresofmonitorsanddisplays.• checkingof theuniformityofbackground illuminationaccordingtoexistingstandards

• controlof thecolour renderingcharacteristicson thebasisofexistingstandards(e.g.EBUTech.3273)

• evaluationof theangle-dependentcontrastdistributionondisplays(bymeansofaconoscopiclens)

• determinationofdefectpixels

Measuring lamps and lighting fixturesRegarding thedevelopmentof lampsand luminaires, the imagingmeasurementoffersanumberofadvantages.TheTechnoTeamcompanyhasdesignedsoftwaresolutionswhichallow the lightingengineering evaluation of themeasuring datawith respect tocharacteristicvaluesandguidelines tobesimplifieddrastically.• simpledeterminationof themeanluminanceoffilamentsandarcs(e.g.usingthearcobjectaccordingtoECE99)

• imagingevaluationoflocalluminancemaxima• photographingoflargelamps/luminairesbyoneshotdocumentationoftimedependingprocessesbymeansofatime-controlledseriesofshots

Measuring headlampsBeing the supplier ofmeasuring equipment for a bignumber ofmanufacturers of lighting and illuminationdevicesandmaintainingclosecontacts to itsscientificenvironment, theTechnoTeam company has gainedexperienceinhandlingbothlowestandhighestluminances,andisthusinapositiontooffersolutionsadaptedtoveryspecialapplications.• determinationof the illuminancedistributiononplanesurfaces

• calculationof the luminous intensitydistributionof theheadlamp

• measurementof thecolourscaleandcolourdeviations,e.g.onbrightanddarkedges in theprojectedimageofaheadlamp

• verificationandobservanceofguidelinesforcarheadlampsbymeansofprescribedmeasuringpoints(e.g.HV;AK31;B50Landmanymore)

• automaticalignmentonmeasurementgridsandpositioningofmeasurementspots(ellbow-pointdetection)

Contrastmeasuring

Filamentmeasurement

DeterminationoftheLID(luminousintensitydistribution)ofaheadlamp

Arcmeasurement

Exterior lighting - Streets and tunnelsTheLMKmeasuringsystemisverywellsuitedtomakemeasurementsinanurbanenvironmentinpublicplacesandstreetsinordertomakedatafor the lightingdesign incitiesavailable.Thus, forexample, thesystemallowscolourdifferencesoncladdingsoralsotheefficiencyoflightinginstallationsinpublicplacestobeevaluatedinasimpleway.

Outdoorapplications

A Photometer

CCD Cameras

·Imaging

Positioning

Detection·Sensors

• Checking thebrightnessandcolour renderingof large luminousboardsand informationcarrierswithregardtotheirperceptibility(e.g.contrastmeasurements)

• Glareevaluation,determinationofthevisibilitydistanceoflocallightinginstallations• DeterminationoftheluminancedistributionaccordingtoDINEN13201forstreetsandtunnels• CheckingtherecognizabilityofroadwaymarkingsinvaryingweatherconditionsBymeansoftheLMK98-4camera,itispossibletomakestreetlightingmeasurementsalsooutofacarinmotion.

Interior lightingTheLMKmeasuringsystemallowsspatiallyresolvedmeasurementsforverifyingexistingnormsanddesignprojects tobemade inasimpleand fastwaywithregardtofullillumination,ergonomicsandwell-being.

• Evaluationofbrightnessdistributionandcolouroflightinlightedrooms

• Determinationofcontrastandglareevaluationofwindowsurfacesandvideoworkstations locatedinthevicinityofwindows(e.g.CRFmeasurement,UGRdetermination)

• Determinationof the illuminancedistributionwithregard toergonomicandeconomicaspectsofworkplaces;evaluationofcircadianactionpotentialsofartificiallightingwithregardtothehealthandwell-beingofhumans

• Checkingexistingnormsforemergencyandsafetylighting

Indoorapplications-UGRassessment

LMK modelsThecentrepieceof theLMK family is the luminancemeasuringcamera typeLMK98.TheyuseselectedCCDsensorsmadebySonyorKodak.ThecurrentmodelistheLMK98-4andtheLMK98-4color.

With the releaseof thesecamerasboth thedesignjustas theelectronicsystemof theLMKhavebeenmodified.Themeasurement system ismuchmorecompact.Furthermore,theoperationoftheLMKwithadesktopPCoranotebookispossible,nowasbefore.

Basedonthestandardhardwareof theLMK98-4andLMK98-4color themodelsLMK98-4simpleandtheLMK98-4colorsimpleareoffered.Theirhardwarecomponentsaresimilartothestandardsystemsandachievethesamemeasurementaccuracy.

Furtherdifferencesconcerningthetechnical featuresof theLMK98-4simpleandLMK98-4colorsimplecamerasrelatetotheLMKsoftware(refertopage14ofthebrochure).

Formobileapplications,however, theLMKmobileadvanced isavailable. It isbasedon thehigh-qualitydigitalcamerasoftheCanonEOSseries,whichhavebeenupgradedtosuitthisapplicationpurpose.Thus,theusershaveattheirdisposalaluminancemeasuringsystemwhich is easy tooperateandwhich canbeappliedforsolvingmobilemeasuringtasks.

The luminancemeasuring camera LMKHighRes,equippedwith5,11or16megapixelsensorresolution,representsasolution for fieldsofapplicationswhichrequireahigh2Dmeasurementresolution.

AlsotheLMKHighRescolorwith5megapixelsensorisnowavailable.

lownoiseanalogelectronic sensor

filterwheel

scatteredlightoptimizedlens

A/Dconversion

digitaldatatransfer

filterwheelcontrol

V(£ f)-filter

lownoiseanalogelectronic sensor

scatteredlightoptimizedlens

A/Dconversion

digitaldatatransfer

MODELSTheLMK98-4 isahigh-techdigitalCCDcamerasys tem equ ipped w i th a prec ise ana logueelectronic system for signal generation. Eachcameraisprovidedwithaespeciallycalculatedandmanufactured full filter inorder toachieveahigh-qualityV(l)-adaptationfordeterminingtheluminance.

Additionally theLMKHighResmodelswithhigherimaging resolutionareonoffer.Themetrologicalspecificationof the5megapixelsensor issimilar totheLMK98-4.Thetechnicaldetailsforsystemswithhigherresolutioncanbefoundonpage10.

LMK 98-4 and LMK HighResSensor CCDSony[ICX285AL(2/3")] effectivePixel[1380(H)x1030(V)] CCDSony[ICX655AL(2/3")] effectivePixel[2448(H)x2050(V)] [12Bitdigital,progressivescan]Dynamicrange Singlepicturemeasurement(SinglePic)[1:1100(~61dB)] Multipicturemeasurement(MultiPic;10pics)[1:3600(~71dB)] HighDynamicmeasurement[1:10000000(~140dB)]Datatransmission CameraLinkinterface(standard:5mPCconnectioncable;otherlengthscan bemadeavailableonrequest)Metrologicalspecifications V(l)[f´1<3.5%1]Measuringquantities Luminance[L(cd/m²)] Furthermeasuringquantitiescanoptionallybedefinedviascalingfactors.Measuringrange Settingtheluminancemeasuringrangesbychoosingtheintegrationtime from100μs...15s Accuracyratingdependingonlens(aperturenumber=k),e.g.: 1ms...appr.1800cd/m²&3s...appr.0.6cd/m²(k=min.) 1ms...60000cd/m²&3s...appr.20cd/m²(k=max.) Higherluminancescanbeachievedusingoptionalneutraldensityfilters.Calibrationuncertainty2 fixfocusedlensesDL[<2%] focusablelensesDL[<2.5%]Repeatability3 ΔL[<0.1%]Measuringaccuracy DL[<3%(forstandardilluminantA)]Uniformity DL[<2%]Fieldsofapplication laboratorymeasurements,fieldmeasurements,industryautomation

LMK98-4

SpectralmatchingoftheLMK98-4

1MeasurementsaccordingtoDIN5032Part6/CIEPub.69

2CalibrationaccordingtoDIN5032Part6usingaluminancestandardledbackfromthePhysical-TechnicalFederalInstitute

3MeasurementperformedonastabilizedwhiteLED lightsourceL=100cd/m².Meanvalueover100Pixel; repeatabilityasvariabilityofthemeanvalue.

A Photometer

CCD Cameras

·Imaging

Positioning

Detection·Sensors

MODELSTheLMK98-4colorisequippedwithafilterwheelforcolourmeasurement,adaptedtotheCIEcolourmatchingfunctionsofthe2°standardobserver(CIE1931).Thus,luminancesandcolourcoordinatescanbemeasuredinaspatiallyresolvedway.

Thefilterwheelpermitsatotalof6filterstobeincorporated,with4filtersbeingnecessaryforcolourmeasurement.Inaddition,themeasuringsystemcanalsobeequippedwithfiltersforthescotopicluminanceV´(l),thecircadianfunctionofactionC(l),anIR-filter(measurementsintheNIRrange780-1000nm),aBLH(bluelighthazard),oraclearglassfilter.

AdditionallytheLMKHighRescolorequippedwiththe5megapixelforahigherimagingmeasurementresolutionisonoffer.ThemetrologicalspecificationofthiscameraissimilartotheLMK98-4colortype.

LMK 98-4 and LMK HighResSensorCCDSony[ICX285AL(2/3")]effectivePixel[1380(H)x1030(V)]CCDSony[ICX655AL(2/3")]effectivePixel[2448(H)x2050(V)][12Bitdigital,progressivescan]

DynamicrangeColorHighDynamicmeasurement[1:10000000(~140dB)]HighDynamicmeasurement[1:10000000(~140dB)]

Datatransmission CameraLinkinterface(standard:5mPCconnectioncable;otherlengthscan bemadeavailableonrequest)Metrologicalspecifications V(λ)[f´1<3.5%

1];X(l)[f*1<4%] Z(λ)[f*1<6%];V´(l)[f*1<6%]Measuringquantities Luminance:L(cd/m²),chromaticitycoordinates:x,y,Supportedcolour paces:RGB,XYZ,sRGB,EBU-RGB,User,Lxy,Luv,Lu’v’,L*u*v*,C*h*s*uv, L*a*b*,C*h*ab,HIS,HSV,HSL,WST2

Furthermeasuringquantitiescanoptionallybedefinedviascalingfactors.Measuringrange Settingtheluminancemeasuringrangesbychoosingtheintegrationtime from100μs...15s Accuracyratingdependingonlens(aperturenumber=k),e.g.: 1ms...appr.7500cd/m²&3s...appr.2.5cd/m²(k=min.) 1ms...60000cd/m²&3s...appr.20cd/m²(k=max.) Higherluminancescanbeachievedusing optionalneutraldensityfilters.Calibrationuncertainty3 fixfocusedlensesΔL[<2%] focusablelensesΔL[<2.5%]Repeatability4 ΔL[<0.1%] Δx,y[<0,0001]Measuringaccuracy ΔL[<3%(forstandardilluminantA)] Δx,y[<0.0020(forstandardilluminantA)] Δx,y[<0.0100(setoftestcolours)5]Uniformity ΔL[<2%]Fieldsofapplication laboratorymeasurements,fieldmeasurements,industryautomation

LMKHighRescolor

SpectralmatchingoftheLMKHighRescolorandLMK98-4color

1MeasurementsaccordingtoDIN5032Part6/CIEPub.692Dominantwavelength,saturation,correlatedcolortemperature3CalibrationaccordingtoDIN5032Part6usingaluminancestandardledbackfromthePhysical-TechnicalFederalInstitute4MeasurementperformedonastabilizedwhiteLEDlightsourceL=100cd/m².Meanvalueover100Pixel;repeatabilityasvariabilityofthemeanvalue.5Measuredvaluebasedon30testcolorswithdifferentspectraldistributionsbasedonROSCOcolorfilters

MODELSTTheLMKHighRes11/16MParemonochromaticluminancemeasuringcamerasequippedeitherwithan11or16megapixelCCDsensormadebyKodak.AllLMKHighRessystemsareadaptedtothespectralluminoussensitivityofthehumaneyebymeansofaV(l)-filterfortheCCDchip.

LMK 98-4 and LMK HighResSensor CCDKodak[KAI-11002/16000M,squarepixel] activePixel[4008(H)x2672/4008(V)] [10Bitdigital,progressivescan(1-3fps)]Dynamicrange Singlepicturemeasurement(SinglePic)[1:1100(~61dB)] Multipicturemeasurement(MultiPic;10pics)[1:3600(~71dB)] HighDynamicmeasurement[1:10000000(~140dB)]Datatransmission CameraLinkorGigE®interface(standard: 5mPCconnectioncable;otherlengthscanbemadeavailableonrequest)Metrologicalspecifications V(λ)f´1<3.5%

Measuringquantities Luminance[L(cd/m²)] Furthermeasuringquantitiescanoptionallybedefinedviascalingfactors.Measuringrange Settingtheluminancemeasuringrangesbychoosingtheintegrationtime from1ms...15s Accuracyratingdependingonlens(aperturenumber=k),e.g.: [1ms...appr.6000cd/m²&3s...appr.2cd/m²] Higherluminancescanbeachievedusingoptionalneutraldensityfilters.Calibrationuncertainty2 focusablelenses:ΔL[<2.5%]

Repeatability3 ΔL[<0.1%]Measuringaccuracy ΔL[<3%(forstandardilluminantA)]Uniformity ΔL[<2%]Fieldsofapplication laboratorymeasurements,fieldmeasurements,industryautomation

1MeasurementsaccordingtoDIN5032Part6/CIEPub.692CalibrationaccordingtoDIN5032Part6usingaluminancestandardledbackfromthePhysical-TechnicalFederalInstitute3MeasurementperformedonastabilizedwhiteLEDlightsourceL=100cd/m².Meanvalueover100Pixel;repeatabilityasvariabilityofthemeanvalue.

LMKHighReswith11megapixelsensor

A Photometer

CCD Cameras

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Positioning

Detection·Sensors

MODELSTheapplicationof high-quality digital cameras inthe LMKsystemallows an easy and fast captureof luminance imageswithout dependingon yourmeasuringcomputer.Forevaluating the images, thecompletefunctionalityoftheLMKLabSoftsoftwarecanalsobeutilized.

With thealreadyexistingsystems typeLMKmobileandLMKmobileadvanced,ofwhichmore than100havebeensoldso far, theTechnoTeamcompanycanrelyonexcellentknow-howandmanyyearsofexperiencein the fieldof luminancemeasuring technology.Thesecondgenerationofmobile luminancemeasuringcamerasrepresentedbytheLMKmobileadvancedsystemisbasedonmodelsoftheCanonEOSseries.

Ti\Av 4 5.6 8 11

0.25 ms 3.1 3.5 3.7 4.3

2.5 ms 1.5 1.8 2.0 2.7

25 ms 1.3 1.7 1.9 2.5

0.25 s 1.3 1.7 1.9 2.5

2.5 s 1.3 1.7 1.9 2.5

RepeatabilityaccuracyΔLin%

Ti\Av 4 5.6 8 11

0.25 ms 7.6 8.0 8.2 8.8

2.5 ms 6.0 6.3 6.5 7.2

25 ms 5.8 6.2 6.4 7.0

0.25 s 5.8 6.2 6.4 7.0

2.5 s 5.8 6.2 6.4 7.0

MeasuringaccuracyΔLin%(forstandardilluminantA)

LMK mobile advancedSensor CMOSCanonAPS-C4272(H)x2848(V) effectivepixel(resolutionoftheluminanceimage)2136(H)x1424(V) 14BitRAW-datawithBayerstructure,uncompressed

Dynamicrange Singlepicturemeasurement(SinglePic)[1:4000(~60dB)] HighDynamicmeasurement[1:32000(1/1250sec.<ti<8sec.)]Datatransmission USB2.0and/orSD/SDHCmemorycardMetrologicalspecification Spectralmatching [numericalweightingoftheRGBtristimulusvalues(multiplyingmatrices)]Focallength/Visualfieldangle Focallength18mm:65°(H)x45°(V) Focallength50mm:28°(H)x19°(V)Measuringrange Selectingaperture,exposuretimeandISOspeed.Calibrationuncertainty ΔL[2.5%]Uniformity ΔL[<2%]Fieldsofapplication laboratorymeasurementsfieldmeasurements

SOFTWARE

LabSoft

AdditionallytoallcamerasystemsoftheLMKfamily,theLMKLabSoftissupplied.Themeasuring softwareoffers a big number ofpossibleapplicationswhenusing the luminance

measuringsystems,aswellasfordataevaluationandprocessing.

Easeofoperationisguaranteedtotheuserthroughtheintegrationoftask-specificcapturefunctions.

SinglePic-capture-permitsaluminanceimagetobetakenveryquickly.MultiPic-capture -permits the repeatedcaptureofseveralsingle imagessoas toeliminatestatisticalmeasuringerrorsthroughaveraging.HighDyn-algorithm-permits thecaptureofa luminance imagecomposedofsingle imagesatvariousintegrationtimessoastorealizeahigherdynamicrange.

For thevisualizationof themeasuring results, theusercanchoose,amongother things, froma freelyscalablepseudocolouringaswellasseverallogarithmicrepresentations.Pre-madeandfreelyscalablepoint,line,circularandrectangularcursorspermitthemeasuringdatatobeaccessedinaquickandflexibleway.Thedefiningofmeasuringregionsbymeansofgeometricalbasicshapesfacilitatesevaluation.Inaddition,theyprovidemanyauxiliarymeans for thestatisticalevaluationof thedata (tables,sectionaldiagrams,histograms,andphotometricevaluationalgorithms).Furthermore, thesoftwareoffersa function foranautomaticaldetectionofregionsbymeansofluminances.Thisisbothusefulandadvantageousfordetectingcomplexgeometricalstructures.

The report function for anexport ofmeasurementdataandevaluation results toMSWord®andMSExcel® isasimpleandcomfortablepossibility for thecommunicationandthesharingofmeasurementdatawithothers.Furthermore, theyoffer theadvantageofastandardor individualprinting template tocreateaprintingreport.

TheLMKLabSoftsoftwareprovidesabigvarietyofdata formats for theexportand importof imageandmeasuringdata,forexampleforMatLAB®,LabVIEW®andSPEOS®.The data exchangewithMicrosoftOffice®products and other software programs isenabledbythefunctionsoftheWindows®clipboard.

Enhanced software package for colour captureWiththeLMKLabSoftcolorthecompletefunctionalityoftheluminancemeasuringsoftwareLMKLabSoftisavailablefortheassessmentofchromaticityvaluesoutofthreechannelcolourimages.ThemeasuredX,Y,Zcolourvaluescanbeconverted intodifferentcolourspaces(e.g.RGB,XYZ,sRGB,EBU-RGB,Lxy,Luv,L*a*b*,HIS,HSV). IncaseofmeasuringLEDsor lampsacolourspaceshowingthedominantwavelength, the colour saturation and thecorrelatedcolour temperature isavailable. It ispossibletocalculatecolourdistancesandcolourdifferences in several colour spaces.Amongto the standard graphical forms of showingmeasuredvalues ingraphsanddiagrams (inthreechannels) thechromaticity coordinatescanberepresented inacolourspacediagram(e.g.horseshoeview),whichshowsthecolourgradientandstatisticalaccumulationpoints.

3DviewoftheluminanceintheLMKLabsoft

Luminanceimageofasymbol

Colourevaluationofabacklitsymbol(pointdensitymode)

A Photometer

CCD Cameras

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Detection·Sensors

ChromaticitydiagraminLMKLabSoftcolor Displayofthecoloursymbolobject

Withthenewcoloursymbolobject-chromaticitycoordinatescanbematchedtotheirluminancelevels.Soitiseasiertodetectregionsforacolorimetricalevaluation(e.g.backlitsymbols)withrespecttoaluminancethreshold.

Theusercanexertaninfluenceonthecalibrationdataandchangethealgebraofmatrices.Soitispossibletoadjust theLMKsystemforanowncolourspaceor forbalancing theLMKsystemwithownreferencequantities. In thisway thespectralmatchingcanbeadapted tospecificmeasurement tasks (e.g.LEDmeasurements).

Throughout themeasurement inseveralchannelsX,Y,ZandV´(λ)andoptionalC(λ)orBLH(BlueLightHazard)and thesubsequent imageprocessingdifferent radiationmeasurements fordifferentperceptionmodelscanbemade(e.g.mesopicbrightnessperception).

Versions of the LMK LabSoft

LMK LabSoftWith thenewmeasurementandevaluationsoftwareLMKLabSoftTechnoTeamprovidestheconsistentlyongoingdevelopmentof thewellprovenLMK2000software.Asa resultofan intensiveexchangeofexperiencewithourcustomerswecouldenhanceourevaluation functionalities.Also theusability isoptimisedandpartlycompletelyoverdone.ThusthefunctionalitiesforthedocumentationandthereportingofthemeasurementresultsarenowtotallycompatiblewithMSOffice®.Furthermore thenewembeddedTCLscript languageallows the recordingand linkingofoftenusedfunctionalities.Thustheautomationofcompleteworkingproceduresispossible.

LMK LabSoft simpleTheLMKsimplepackage isoffersameasurementsystemwhich includes theknowncamerahardwareincombinationwithonlyessentialsoftwarecomponentsata lowerprice.Therefore,allvideophotometersystemscanbeequippedwiththeLMKLabSoftsimplesoftware.Thissoftwareisreducedtoseveralselectedbasicfunctionalities.Basedonthestandardhardwareof theLMKvideophotometersystems,onefor theapplicationoptimizedlensismounted.ThepackageLMKsimplecomesinprinciplewithonlyonefreeconfigurablestandardlens.

LMK LabSoft extendedWiththisversionoftheLMKLabSoftsoftwarethepossibilitiesforaninteractionandautomationoftheimageprocessingprocedures is rapidly increased.ByusinganActiveXÒInterface theLMKLabSoftand theiressential functionalitiescanbecontrolledbyseveralothersoftwareapplications.Theassessementof theimageandmeasurementdatacanbedonedirectlyviathehostapplication.Therefore,theintegrationofthesoftwareintoanexistingworkflowisnoproblem.Furthermore,anewinterfaceprovidesthepossibility touseover200algorithmsespeciallydevelopedbyTechnoTeamfromthefieldofindustrialmachinevisionandimageprocessingintheLMKLabSoftsoftware.Thus it ispossible tosolvecomplex issues inuncommonandspecific fieldsofactionwithonespecificsoftwaresolutioninoneclick.SuchsoftwaresolutionswillbeprovidedbyTechnoTeamonrequest.

Software functionalityLMK

LabSoft simple

LMK LabSoft

Liveimage X XExposureadjustment X X

Image capture'SinglePic'-image X X'MultiPic'-image X X'HighDyn'-image X XColor'HighDyn'-image X XCapturingmodulatedlight X XLiveLuminanceandLiveHighDyn XCapturingmeasurementseries(manual,timecontrolled,mechanicalcontrolled) XRepresentationofimages(Pseudo-colours,ISOcolours,scaling) XWorkingwithimages(load,save,delete,copy,print) XDisplayingmeasuringvaluesbymeansofcursors(standard,rectangle,circle,line,circularring,cross,zoom) X

Measurementregions(load,save,copy,paste,group,print) X

Measuring value indication using inspectorsStandardstatistics(standardevaluation,histogram,sectionalview,timestatistics,luminanceobject,integralobject,symbolobject,arcobject,filamentobject) X

Reportfunction(create,load,save,print) X

Evaluation images and image processingAdditionalevaluationimages 1 NPhysicalparametersandunits X XAssigninglistofregions XAssigningimagetabwindows XImagearithmetics XCoordinatetransformation XProjectiverectification-orthophotographs X XISOlinesinluminanceimages X X

Colour images and colour metricsColourspaceandmeasuringvalues X XCalculationofcolourdifferences X XDecompositionofcolourimagesintocolourextractimages XCompositionofcolourextractimagesintocolourimages XTestcolourimages XMeasurementprotocols(create,load,save,comments) X X

Automation via TCL-Macro and Active XRecordingofTCL-Macros XRunningofTCL-Macros X XActiveXprogramminginterface X X

Extrasmotorcontrol,photometercontrol,conoscopiclens,LVKmeasurementandmanymore X

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User-related solutions

Anumber of specific features of the LMKLabSoft softwarehavebeendeveloped tosatisfy customerwishes. So for specificmeasuring tasks, a number of var iousadditionalmodules for the LMK LabSoftsoftwareareavailable.On the basis of its technical know-how,the TechnoTeam company wi l l providecustomerspecificsolutionsinthefuture.

• LMK LabSoft Headlamps means anextendedversion (oradditionalmodule)wh i c h pe rm i t s t h e c o r r e spond i ngi l luminance image and also the LiD(luminous intensitydistributioncurve) tobecalculated fromtheoriginal luminanceimage captured bymeans of the LMKcamera.Here, the illuminance can bedeterminedeitheronaplane (e.g.onaprojectionwall locatedatadistanceof10m)oronahemisphere(e.g.25mradiusforECE).Furthermore,theconversionintothe illuminancesprevailingon theroad isprovidedasanadditionaloptionparticularlyfortheautomobilesector.Headlamps emit light over very largeangles, sometimesevenover theentirehalf-space. Inmost cases, onlymuchsmaller angles canbe captured in oneimage.So,severalpartialimagescapturedat different angular ranges can be puttogethertoformonecompleteimage.

• LMKLabSoftRoadsand tunnels, is anadditionalpackagesuppliedbymeansofwhichstreet lightingscanbemeasured ina fastandeasyway.Theuser isable toacquireallparametersnecessary for theDINEN13201standardbyonesinglecapture.Themeasuredluminancevalueswillthenbeprocessedbythesoftwareforfurtheruse.

• LMKLabSoftGlareevaluationcontainsadatapackagewhichallowsthefastandeasyassessmentofsomeessentialglareparameters.Usingthesoftware,theuser isabletodetermineimportantquantitiessuchastheverticalilluminance,thesolidangleoftheglaresource,andtheveilingluminanceaccordingtocommonstandards.TheseglarequantitiesarethebasisforparameterssuchasUGR;DGI;TI,etc.

LMKglareassessment(TiundLs)

LMKroadsandtunnels(measuringuniformity)

LMKilluminancedistributiononroad(above)andLiD(below)

ACCESSOIRESLensesVarious focusable standard lenseswith a fixedaperture fordifferent focal lengths f´=8mm,16mm,25mm,50mmand75mmareonoffer.Theselensesarenearly flarefree.Theyaresetandoptimizedbyus for theconcreteapplication.Foran integrationtimeof3sec., thesensitivityof these lenses isupto1cd/m²measurementrangeendvalue.Furthermore,all those lensescanbeorderedwitha fix focus forfixedmeasurementdistances.Forsmallobject fieldsa telecentricmacroscopic lens (Macro) isavailable.Furthermore, this lens can be adapted to themeasuringfieldviavariousdistancerings.

Special imaging systemsThesemisphericallensallowsthecaptureofanobjectfieldatafieldangleof±92°.Thislenscanbeusedforcapturingcomplex illuminationsituations, forexample inthecaseoftheevaluationof interiors.Fordetermining the radiationcharacteristicsofsmallfields, forexamplefordeterminingtheangle-dependentcontrastofdisplays,aconoscopiclensisofferedwhichcanbeusedtorecordtheluminancewithinanangularrangeof±60°.

Neutral density filtersND-filterswithdifferenttransmissionsrangingfrom0.5…0.00001enhancethemeasurementrangeoftheCCDcameratobeincreasedforthemeasurementofveryhighluminances.

aperture (f=mm)

min. measuring distance1

least field of view (circa)

least field of view

(mm x mm)

field of view with a distance of

500 mm

field of view with a distance of 1000 mm

8 500 60°(H)x56°(V) 520x390 520x390 1125x845

16 185 30°(H)x22°(V) 85x64 270x203 540x407

25 220 20°(H)x15°(V) 58x44 160x120 360x275

50 280 10°(H)x7°(V) 32x23 75x56 160x120

75 565 6°(H)x5°(V) 52x39 - 105x78

telecentric macro lens with distance ring

measuring distance1 (mm)

field of view (mm x mm) depth of focus (mm)

0mm 160 14x10 ±0.3

+10mm 160 10x8 ±0.2

+20mm 160 7x6 ±0.15

+30mm 164 6,5x5 ±0.15

+40mm 169 5x4 ±0.1

Further lens solutions with other viewing types can be realized on request.

Fisheyelensandhalfspaceimage

Conoscopiclensandconoscopicimage

1measuringdistance=lens-leasingedgeofcamera

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ACCESSOIRES

LED normalWiththeLEDnormal theTechnoTeamcompanyofferscoloured luminancestandardsbasedonLED.Thestabilityoftheluminanceisrealizedthroughthecontrolledconstantcurrentoperationofselected5mmLEDs.Here,theclosed-loopsystemiscontrolledbyaspectrallymatchedphotodiode,withtheLEDsbeingthermallystabilizedbyaPeltierdevice.

• highstabilityoftheluminance(<1%/100h)• highstabilityofthedominantwavelength/colour(<1nm/100h)• stablefunctionirrespectiveoftheroomtemperature(10°Cbis30°C)• homogeneousluminanceovertheemergencesurface(<2%inhomogenity)• standardequipmentin(red,green,blue,yellow,orange,white)

Inadditiontothestandardcolours,alsoothercolourscanbesuppliedoncustomer'srequest.Forthis,thecustomershallselect,incooperationwiththeTechnoTeamcompany,thetypeofLEDofanequivalent5mm-LED.ForeachLEDnormalTechnoTeamprovidesacertificationforthefactorycalibration.ForthetraceabilityofthephotometricdataoftheLEDluminancestandardsit ispossibletocalibratethedevicesatanationalmetrologyinstitute(e.g.PTB(D)orMETAS(CH)).ForeachLEDnormalthefollowingdatawillbecertified:luminanceLandchromaticitycoordinatesx,y.

Evaluation computerForoperatingtheLMKLabSoftsoftware,theminimumhardwarerequirementsare:

• IntelPentiumIIImin.1.3GHz1GBRAM• CD-ROM,>100GBE-IDEharddisc• availablePCIexpansionslotforLMKframegrabber(NotebookwithPCMCIAorPCIExpressInterface))orEthernetadapterforGigEVision™

• WINDOWS2000orhigher

TechnoTeamrecommendssufficient testingof thePCstobeused. Ifnecessary, thecustomermayobtainfromTechnoTeamadviceonthecurrentlyavailablemakes.

PrincipleoftheLEDnormal

LEDnormalwithdifferentcolours

AUTOMATION

Compact measuring boxTheKMPisamobilesolutionfor the indirectmeasurementof lightwithoutaspeciallyadapted laboratoryroom.TheKMPhas2chambers.Areflectivewallandanaperturearefixedinthemeasuringchamber.Intheobjectchamber(archetypechamber)thereisafixedmountingforhead-lightsaswellasthefixedpositionedmeasuringcamera.TheLiD(luminousintensitydistribution)oftheheadlightwillbeimagedonthereflectivewallplacedinthefocalplaneoftheimagingsystemoftheKMP.Betweenthetwochambersanopticalsystemislocated.Thisopticalsystem(lens)cuts themeasuringdistancetoashorterdistance(e.g.outerdimensionLxWxD:95cmx50cmx43cm).Accordingtothepathofraysonthe imagingsideof theopticalsystemthe lightsourcetobemeasuredisvirtuallyplacedataninfinitedistance.Therefore, thesystemworks incompliancewith thephotometricalborderdistance.TheluminanceimageismeasuredwithanLMK.Thuswiththe illuminancethe luminous intensitydistributioncanbecalculated.

SymbolcheckerTheSymbolchecker isasemi-automaticstand-alonesystem for qualitymanagement in the productionof backlit symbols (e.g.switches and dashboardinstruments).

• Averageof luminanceasanaveragevaluefor theautomaticallydetectedcompletebacklitsymbol

• Uniformity:iscalculatedwiththeminimum,averagevalueandmaximumof the luminancewithin thesymbol,determinedwithameasuringspotof3x3pixelsize.

• Position:astheaverageof thesegmentcentroids,calculatedoutof thecontourof thesegment.Thedeterminationofthecontourissubpixelexact.

• Structurewidth:meansageometricalmeasurementofsymbolsegmentswithparallelouter lines.Withthecalculateddistancesoveraniterativecalculatedaverage value (eliminating the valueswith thelargestdifference fromthecurrentaveragevalue)thestructurewidthofthesymbolisdetermined.

• Symbolquality:meansthepercentagematchingofthesymbolwiththepatternrecognized.

Symbolchecker

KMP(compactmeasuringbox)

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SOFTWARE

Programming interface LMK LabSoft extendedTheLMKLabSoftextendedhasanActiveXÒ-interfaceavailableandcanbecontrolledbyahostapplicationwithActiveXÒcapability(e.g.MSExcelÒ,LabViewÒ).InthiswayitispossibletousethefunctionalityoftheLMKLabSoftasaserverforotherapplications.

Allcapturingmodeswillbeprovided:capturingLivecamera images;SinglePic-,Multi-Pic-andHighDyn-algorithmforthecapturingandcalculationof luminanceimages;Color-HighDyn-algorithmforcalculationofcolourvaluesbyusingaTechnoTeamcolourfiltercamera.

Byusingtheinterfaceallstatisticaloperators(e.g.luminance,integralandsymbolobject)areavailable.Sodirectlyaftertheimagecapturingthecurrentlymeasureddatacanbeimportedintothehostapplication(e.g.Excelspreadsheetanalysis).InadditionitispossibletoopenandsavealreadypreparedprotocolfileswithparameterisedstatisticobjectsviaActiveX®.

Furthermoreitispossibletorunself-madeTCLscriptmacros,whicharepreparedandsavedwiththeLMKLabSoftbeforehand,viaActiveXÒfromthehostapplication.OncustomerrequestitispossibletoextendtheinterfacetoallfunctionsofthefunctionalityprovidedintheinteractiveuseoftheLMKLabSoft.

AutomationandcontroloftheLMKLabSoftviaActiveX®

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Production-accompanying measuring technique for LED and LED assembly groups

IPED LED checker (OLED checker)

LEDsarebecomingincreasinglyimportantindifferentfieldsofarchitectural illumination,forlightingfixturesandfor theautomotive industry.Becausetheyaresmallandeasytocombine,LEDassemblygroupsareusedveryoften.Therearepracticallynorestrictionsconcerningtheirdesign,somanydifferentarrangementsarepossible.NearlythesameappliestoOLEDs.

Togetphotometricdataofthe(O-)LEDs,awelladaptablemeasuringsystemisnecessary.Itmustbeabletocapturehighdynamic imagesfordifferentareasofcolorspacesaswellasfordifferent light intensities/luminances.MoreoveritmustbeabletodetermineintensitygradientsandalsotheuniformityoflightsourcesforbothassembliesandsingleLEDsymbols.

All this informationcanbedeterminedbymeansofan imagingphotometeror imagingcolorimeterwithinfractionsofasecond. Inaddition, thereare image-processingoperationsspeciallyadapted to theseproblems.Forexample(O-)LEDsinthepicturecanbedetectedandseparatedautomatically.

Measuring principleDependingonthespecificapplication,(O-)LEDscanbemeasuredeitherdirectlyorindirectly.Themeasuringprinciplefortheindirectmeasurementisshowninthefollowingfigure.

Here,adiffusingscreen ismountedatasuitabledistance to theLEDassembly.The luminanceandchromaticitycoordinatescanthenbemeasuredonthisscreen.

Thereareapplicationsjustasemergencylights,whereespeciallythesingleresultsofeachLEDcomparedwithoneanotherareof interest.So, ithas tobecheckedwhetherallLEDshaveaminimumof intensity(luminance)andalsothatthecolordistancebetweentheLEDsiswithinapredefinedtolerance.

TheluminancedistributionofthesingleLEDscontainssomeimportantinformation:

• Theluminanceandthesizeofthelightspotprovidesinformationaboutthepartialluminousflux.• Fromthecoordinatesofthe“lightspot”,boththepositionoftheLEDoralsoacertain“squint”oftheLEDcanbeconcluded.

Theuseofacolorcameradoesnotonlypermit thebrightness tobemeasured,butalso thecolor inanimagingmanner:

• colordifferencesoccurringwithintheradiationofasingleLEDcanbedetected(e.g.inthecaseofwhiteLEDs).

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Software client

TheLEDCheckerpackagecontainsalsoseveral interfacesfor thecommunicationwithaprocesscontrolsystem.Results represented in thesoftwareuser interfaceor thedatacanbeoptionally transferred to externalprotocolfilesandprograms.

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NEAR-FIELDGONIOPHOTOM ETERRIGO 801

Thefulldeterminationofthedataofluminairesandlampsbecomesmoreandmoreimportant:

• Primaryprerequisiteofacorrectilluminationplanning• Simulation,developmentofluminairesandlamps• Catalogingandpresentation

Thegoniophotometer typeRIGO801utilizesanew image-resolvingCCDmeasuring technique fordeterminingraydataandluminousintensitydistributions.Thecorrectdeterminationoftheluminousintensitydistributions(LVK)oflampsandluminairesisperformedfarwithintheirphotometriclimitingdistanceonthebasisof image-resolvedmeasurementsof luminous intensitydistributions.ACCD-camera ismovedbyagoniometeraroundthemeasuringobjectatrestonasphericalsurface,withtheradiusofthisspherebeingfixedonlybythefieldangleofthecamera.Thus,thegoniometercanalsobeinstalledinsmalllaboratories.AnordnungzurMessungderLichtstärkeverteilungenvonLeuchtenundLampenGebrauchsmusterDE29706488.6v.11.04.1997

Poschmann,R.;Riemann,M.;Schmidt,F.;VerfahrenundAnordnungzurMessungderLichtstärkeverteilungvonLeuchtenundLampen;PatentDE4110574v.30.3.1991

AdvantagesFulldescriptionofthelightemissionbyraydataSmalldimensionsoftheset-upMeasuringinnormalposition

Result dataLuminousintensitydistributions(LID)Raydataavailableinvariousformats(e.g.ASAP,SPEOS,RWR,Lucid-Shape,LightTools,Zemax)ProcessingandarchivingoftheLVKdatainaphotometricdatabase(LumCAT)

Technical dataTypeofthegoniophotometerImage-resolvingaccordingtoProf.RiemannDimensionsAppr.3L*3L*3LL:max.luminaire/lampdimensionMin.distancebetweentheC-layers0.1°Min.distancebetweentheradiationangles0.1°MeasuringtimeAppr.25min.for2.5°x2.5°CameraCCD–digitalcamera(Kappa)LMK98-2,13bits,V(λ)-filterIlluminancemeterDigital18Bit,V(λ)–adapted

Measurement of photometric objectsThemeasurement of photometric objects turns out to benecessaryforvarioustasks:• With respect to developmental aspects, the influenceofmodificationsmustbedetermined.Theaimistooptimizethephotometricparameters.

• Luminairesand lamps themselvesareonlycomponentsofacomplete illuminationsystemorofdevices.Forcalculatingsuchdevicesorsystems,dataarerequiredwhichdescribetheluminaires/lamps.

• Descriptivedatamustbemadeavailable formarketing theproducts.

Photometric measuring dataFordescribingphotometricobjects,notonlysimulationdatabutalsovariousmeasuringdataarenecessary:

• Light-emittingcharacteristicdataofluminaires/lamps(LIDs,spectralcharacterization;objectassumedtobeapoint)

• Descriptionoftheluminoussurfacesofluminaires/lamps(luminancedistributions)

• Light-emittingcharacteristicdataofgeometricallyexpandedluminaires/lamps(4D-luminancedistribution,raydistributioninthespace)

• Energeticdescriptionoftheluminaires/lamps(efficiencyratio,powerinput,temperaturebehavior)

Its place in photometryThephotometricdataofluminaires/lampsaremeasuredbydifferenttypesofmeasuringdevices.Indoingso,theradiationoflightofluminariesisrecordedonthebasisofanevaluationfromdifferentobservationdirections.

Thevariousmeasuringdevicesdifferfromeachotherinthefollowingpoints:

• Either themeasuringobject ismoved inorder tosetadefinedradiationdirectionwith regard to thephotometric receiver,or thephotometricreceiverismovedinordertosetadefinedobservationdirection.

• Eitheronlyonephotometric receiver isutilizedwhich ispositionedatasufficiently largemeasuringdistance (beyond thephotometric limitingdistance),orspace-resolvingordirection-resolvingreceiversareutilizedwhicharepositionedatashortmeasuringdistance.

The followingconventional typesofmeasuringdevices fordeterminingphotometricparameterscanbeclassified:AGoniophotometerwithrotatingmirrorBGoniophotometerbasedonluminancemeasuringcamerasCGoniophotometerwithlongmeasuringarmDLuminairerotatorOnlytypeB,goniophotometerbasedonluminancemeasuringcameras,isabletogeneratemeasuringdatafortheradiationcharacteristicsofgeometricallyexpandedmeasuringobjectsforthecalculationinthenearfieldjustasfortheevaluationofluminancedistributionsonobjects.Themeasuringdataof the luminous intensitydistributions(LIDs)canbesaved inallcommonfileformats(EULUM-DAT,TM14,IES,Calculux)usingthephotometricdatabaseLumCAT.RaydataaremadeavailableintheformatsofthesimulationtoolsASAP,SPEOS,LightTools,Lucid-ShapeandZemax.Inaddition,alsocustomer-specificformatscanberealized

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Ray model basic data of the RIGO 801Forluminairesimulations(e.g.calculationofreflectorsinheadlamps),fortheplanningofilluminationsystemsorforraytracingmethods(computersimulationoflivingspacesandthingslikethat),thedataoftheradiating/luminousobjectsarenecessary.The fulldescriptionof the radiationconditionsofasurfacerequires toindicatetheluminancedistributionLx,y,z,λ(ϑ,ϕ)inallsurfacepoints(x,y,z)Surfaceoftheobject.(Differingspectraldistributionsonthesurfaceitselfarenotconsideredhere.)Asasurfacecanbedescribedbytwoparametersz=f(x,y)-a4D-datafieldresultsL(ϑ,ϕ,x,y).

Thedata records thusobtainedpermit theuser todescribeobjectsusing raymodels.Raymodelsarealreadyused inmanysimulationprograms.However, theyareoftenbasedonsynthetic,mathematicallydefinedmodelsfortheluminousobjects(e.g.descriptionofafilament).

Insomecases,modeldatamaydescribe theactuallyused lampsand luminairesonly insufficiently.Therefore,thereisahighdemandformeasureddata.If theluminanceconditionsonthesurface(raydata)aretobedetermined, individualsensorswhichperformintegralmeasurementscannotbeemployed.Therequireddatacan,inprinciple,bemeasuredbymeansofanimageresolvingluminancemeasuringcamera(LMK)*onapositioningunit (goniometer).Thiskindofmeasuringdevice isofferedby theTechnoTeamcompanyasRIGO801device indifferentversions. Ithasalreadystooditstest inabigvarietyofdifferentapplications.

Application of the measuring dataThemeasurementof the4D-luminancedistributionofmeasuringobjects opensupnewpossibilities of describingphotometricobjects, integrating themintosimulationprograms,andobtainingdata fordocumentationandplanning.On thebasisof the raymodel,abignumberofphotometricparametersof luminaires/lampscanbedeterminedusingtheRIGO801device.• Conventionalplanningdata(LID)forlightplanning• Datafornear-fieldapplications(NearfieldLID)• Luminancedistributions• Data for programs for the computerassisted simulationofcomplexphotometricassemblies

Planning of illumination systemsThenear-fieldgoniophotometertypeRIGO801makesconventionalluminous intensitydistribution fittings (LID)of luminaires/ lampsavailable.

Atpresent, standardprograms for theplanningof illuminationsystemsmostly use the luminous intensity fittings (LID) ofluminairesasstartingdata.However, in theevaluationusingLID,theluminaires/lampsareregardedonlyaspointmeasuringobjects,whichisfullysufficientformanycasesofapplication.

Evaluation of luminance distributionsTheinternaldatabaseisthe4D-luminancedatafield,whichresultedfrom2D-luminancedatameasuredat therespectiveobservationpositions (camerapositions throughgoniometercontrol).Thus,also theseoriginal luminance imagesareavailableandcanbeevaluatedusingtheLMK-functions.Theimage-resolvingmeasuringdevicescannotonlybecombinedwithcertainmodulesofimageprocessing,butalsowithoptionsfortherecordingandmeasurementofgeometricalrelations(lengths,angles, solidangles), thuspermittingabignumberofderivedparameterstobeobtained,too.

Full description of the luminous objectsForallthosetaskswherethedataobtainedasmentionedabovearenotsufficient,thecompletemeasuringdatacanbeused.Thisconcerns,forexample,theraytracingmethodsforreflectorcalculationsondownlightsorheadlamps, theraycalculationofcomplex illuminationsystems(e.g.projec tors)andothers.Thedatarecordsavailableaftermeasurementcanbeconvertedintothoseformatsusedbythefollowingsimulationorevaluationprograms.

Technical dataThegoniometersusedformovingtheimage-resolvingluminancemeasuringdevicesarerealizedaccordingtothedesiredrangeofthemeasuringobjectsandalsoaccordingtotheavailablelaboratoryspace.

ApplicationsGoniophotometerforLEDandsmalllamps

Sizeofmeasuringobject[6x6x6mm³-50x50x50mm³]Spacerequired[600x600x800mm³]

GoniophotometerforlampsandsmallluminairesSizeofmeasuringobject[20x20x20mm³-300x300x300mm³]Spacerequired[1300x1300x1900mm³]

Goniophotometerforluminaires(accordingtocustomer’swishes)Sizeofmeasuringobject[≤2000x2000x2000mm³]Spacerequired[≤4000x4000x4900mm³

Relation between possible sizes of the measuring object and the space required by the measuring systems

GONIOM ETERM ODELSGoniometer for LEDs and small lampsSizeofmeasuringobject

[6x6x6mm³-50x50x50mm³]Spacerequired:

[600x600x800mm³]Movement:

Themeasuringcameraandthe illuminancemeteraremovedonacircularpatharound the lamp(horizontalϑ−axis).Thelampitselfisturnedaroundaverticalϕ-axis.

Travelpath:[ϕ=0°...360°,ϑ=-140°...140°]

Measuringpositionoftheluminaire:Normalposition,standing

Measuringwidth:[100mm]

Positioningaccuracy:[ϕ<0,02°,ϑ<0,05°]

Repetitiveaccuracy:[ϕ<0,01°,ϑ<0,02°]

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Goniometer for lamps and small luminairesswivelling

Sizeofmeasuringobject:[20x20x20mm³-300x300x300mm³]

Spacerequired:[1300x1300x1900mm³]

Movement:Themeasuringcameraandtheilluminancemeteraremovedonaspherearoundthelamp(twoindependentaxesarrangedverticallytoeachother(ϑ,ϕ)).

Travelpath:[ϕ=-2°-362°,ϑ=0°-360]

Measuringpositionoftheluminaire:Normalposition,nomovementofthemeasuringobject.Thewholegoniometercanbeswivelled,whichpermitsdifferentmeasuringpositionstoberealized.

Measuringwidth:[270mm]

GONIOM ETERM ODELSGoniometer for luminaires

Sizeofmeasuringobject:[≤2000x2000x2000mm³]

Spacerequired:[≤4000x4000x4900mm³]

Movement:Themeasuringcameraandtheilluminancemeteraremovedonaspherearoundthelamp(twoindependentaxesarrangedverticallytoeachother(ϑ,ϕ)).mountedtoafixedupperpoint.

Travelpath:[ϕ=-2°-362°,ϑ=0°-360°](upperlampsuspension)

Measuringpositionoftheluminaire:Normalposition,nomovementofthemeasuringobject;lampsuspensionpossibleat5thetopandatthebottom.

Measuringwidth:[500-2000mm]

SensorsImage-resolvingmeasuringcamera• CCD–digitalcamera(Kappa),LMK98-3,V(λ)–fullfilter-adapted• Digitalframegrabber,12/13Bit• Changeablelenses,photometricallycorrected,distortion-corrected

Illuminancemeter• V(λ)-calibrated,cosine-adaptation• Temperature-stabilised• DigitalsignaloutputviaRS422/232• 18-bitresolution,8measuringranges• Usageofexternalphotodiodespossible(e.g.UVmeasuringcells)

Drives, control systemsServomotorsandHarmonicDrivegears

Evaluation computer• IntelPentiumatleast2,6GHzP4CPU1GBRAM• CD-ROM-drive• >40GBE-IDEharddisk• 19"Monitor• WINDOWS2000• DigitalerFramegrabber• Interfacecard(RS422)

SoftwareRIGO801Basicsoftwareforoperatingthegoniometer

• CaptureofLIDsusingthecameraorilluminancemeter,savingintheTechnoTeam–format,conversionintodifferentstandardformatsusingthesoftwarepackageLumCAT

• Angularstepwidths0.1°...2.5°(camera),0.1°...180°(illuminancemeter)

• Highmeasuringspeed(e.g.25minutesfora2.5°x2.5°measurement).

• Captureofraydata,savingintheTechnoTeamformat.Conversionusingtheprogramconvertertype801intovariousstandardformat

Convertertype801ProgramfortheconversionoftheTechnoTeam–raydataformatintovariousstandardformats• Presentlyavailableformats:ASAP,SPEOS,RWR,LucidShape,LightToolsandZemax.• Presentlyavailableenvelopinggeometries:sphere,cylinderandcuboid.• APIforprogrammingownraytracing-DLLs• Theoutputincustom-madeformatsispossibl

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SoftwareLMK2000LuminancemeasuringsoftwareLMK2000*.• Task-specificcapturefunctions• Avarietyofvisualizationfunctions• Extensivestatisticalevaluations• User-definedevaluationanddrawingupofprintreports• Componentforcontrollingthegoniometermechanics• Specialevaluationobjects,e.g.spiralandarcobject(ECE99)

LumCAT• ConversionoftheLVK-datafromtheTechnoTeamformatintootherformats(EULUM-DAT,TM14,IES,Calculux,...)

• Systemformanagingandprocessingluminairedata(database)• Modificationofallproductinformation• Drawingupofmeasuringprotocol

TechnoTeam3D–ViewerProgramforthe3Dvisualizationofluminousintensityandraydistributions.

Power supply and metrological equipment

ZentroSX1H-X20SA.C.voltagestabilizer200–254V;2,42kVA

SSP500-52KA344ADC-laboratorypowersupply0...40V,0...25A(Gossen-Metrawatt)

DigitalwattmetertypeWT200YokogawaWT200,single-phasedigitalwattmeter,max.600V,20A,0...50kHz

PowerAnalyserNORMA3000LEMNORMAGmbH,1to3phases,max.1000V,10A,0.1...110kHz

ControlpanelControlpanelfortheeasyconnectionofpowersupplies,themultipurposemeterandtheluminaire/lamp.

Luminousfluxgeneral-lightingservicelamp(LMT)Incandescentlamp24V/100W,mattsocketE27

Measuringlampholderforluminousfluxgeneral-lightingservicelamp(LMT)E27socketwithhardgold-platedcontacts,additionalmeasuringcontacts

Thecomponentsmentioned in thisdocumentsuchasa.c.voltagestabilizer, laboratorypowersupply,multipurposemeterandcontrolpanelcanbe installed in thegoniometerswitchcubicleandcableduponcustomer’srequest.

LED standard

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LEDnormalLED-luminance standard

Properties• Highstabilityofluminance(<1%/100h)• Highstabilityofdominantwavelength/colour(<1nm/100h)• Lowpoweruptime(<5min)• Stableoperationat10°C-30°Ctemperature• Highuniformityofluminanceatemissionsurface(<2%inhomogeneity)• Exactemissionsurface(diameter:20.0mmwithfitH7)• Compacthousing120mmx110mmx120mm(HxWxD)• Availablestandardcolours(white,blue,green,yellow,amber,red)• Custommadecoloursondemand

Working principleThestabilityoftheluminanceisrealizedthroughatemperaturecontrolwithaPeltierelementandaintensitycontrolwithaspectralmatchedphotoelement.OnlyselectedLED'sin5mmhousingsareapplied.

Calibration @ TechnoTeamForeachLEDstandardTechnoTeamprovidesthefollowingdata:LuminanceL,chromaticitycoordinates:x,y,dominantwavelengthldomandspectralpowerdistributionS(l).Thetraceabilityforthisdatatoanynationalstandardorganisation isat themomentnotpossible.@PTB(Physikalisch-TechnischeBundesanstalt)Forthe traceabilityof thephotometricdataof theLEDstandards it isnecessary tocalibrate thedevicesatanationalmetrologyinstitute.InfurthertimesitisplannedthatthePTBwillcalibratetheluminanceLandthechromaticitycoordinatesxandy.ThePTBistheGermannationalmetrologyinstituteprovidingscientificandtechnicalservices.

stabilized color LED based standards

Available LED standards1

LEDWhite LEDBlue LEDBlue LEDYellow LEDAmber LEDRed

L(cd/m²) 440 80 500 210 300 240

x 0.3300 0.1300 0.2000 0.5700 0.6400 0.6900

y 0.3200 0.0600 0.7200 0.4200 0.3600 0.3100

ldom(nm) 470 533 590 603 620

CCT(K) 6300

LED standard

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Detection·Sensors

Spectral power distribution of the LED standards

Furthermoreothercolourscanberealizedoncustomersdemand.Therefore thecustomerhastochoose inpartnershipwithTechnoTeamtheLEDtypeofaconforming(orrelating)5mmLED.ThustheLEDtypemustbeaccordingnecessarystabilitypropertiesandfurthermoremustbechosenfromalargercharge(appr.100LED's)ofLED'swithsimilarattributes(luminousintensity,colour,lightspreadcharacteristic).

Fields of applicationCCFmeasurementsForthedeterminationofacolourcorrectionfactor(CCF)foraspecificspectralpowerdistribution(SPD)youhavetomeasureataknownluminanceLforthisSPD.ThequotientofthemeasuredluminancevalueandtheknownluminancevalueoftheLEDlightsourceiscalledCCFandcanbeusedasacorrectionfactorforallfurthermeasurementsatthisandsimilarSPD's.

MaintenanceatcustomerssideFor themaintenanceof luminanceandcolourmeasuringcameras it isoftenbetter tocalibratethedeviceat thecustomer facilities.For thispurposethecalibrationmeasurementcanbedonewith themobileandcalibratedLEDlightsources.Thereforeadismountof thecameraforexamplefromamachineisoftennotnecessary.

SystemadjustmentandcalibrationCapturingof10-15differentLEDlightsourceswithacolourcamera.Calculating a transformationmatrixfor the colour camerawith the helpof a balanced calculation (e.g.GLS)andusing themeasureddataand thecalibrateddataoftheLEDlightsources.

StabilitytestsWithregularmeasurementsof theLEDlightsourcesit ispossibletoassurethestabilityofameasurementdevice.

CAMERA PHOTOMETER

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