LED B
oard
LED
Cylinder Lens
LENS
Cylinder Lens
Target
Sensor Board
LED BoardLED
CIS Illumination Guide
3
Index Diffuse Light – Single Sided
LED B
oard
LED
Cylinder Lens
LENS
Target
Sensor Board Diffuse Light – Single Sided 3
Diffuse Light – Double Sided 4
High DOI (Depth of Intensity) # 1 5
High DOI (Depth of Intensity) # 2 6
Grazing Light – Single Sided 7
Grazing Light – Double Sided & Muxed 8
Coaxial Light 9
Combined Diffuse + Coaxial Light 10
Goniometric Light 11
Working with total reflection 12
Coupling light INTO the object 13
Working with Plain Backlight 14
Dealing with Watermarks 15
Working With Polarized Backlight 16
Working with Parallelized Backlight 17
Fluorescence setup 18
Triangulation 19
Burgwallstraße 14 · 86316 Friedberg · Germany
Phone: +49 (0)821 455 553 0 · Fax: +49 (0)821 455 553 20
e-mail: [email protected] · www.tichawa-vision.com
© www.tichawa-vision.com
Layout: www.morawetz-grafik.de
All rigths reserved bei Tichawa Vision GmbH
Impressum:Recommended for • Paper
• Cardboard
4 5
Diffuse Light – Double Sided
Sensor Board
LED
LEDLED B
oard
LED Board
LENS
LED B
oard
LED
Cylinder Lens
LENS
Cylinder Lens
Target
Sensor Board
LED BoardLED
High DOI (Depth of Intensity) # 1
Recommended for • Paper • Cardboard
Recommended for • High DOI (Depth of Intensity) Applications i. e. Objects with varying Height
6 7
High DOI (Depth of Intensity) # 2
Cylinder Lens
LED Board
LED
LENS
Sensor Board
Mirror
Grazing Light – Single Sided
LED B
oard
Sensor Board
LENS
Recommended for • High DOI applications Recommended for • Embossed Text (e. g. Credit Cards) • Coins
8 9
Grazing Light – Double Sided & Muxed
LENS
Sensor Board
Cylinder Lens
LED Board
LED
LED Board
LED
Cylinder Lens
MirrorMirror
Coaxial Light
LED
Boa
rd
LED
LENS
Sensor Board
Light Guide
Mirror
Target
Recommended for • Embossed Text (e. g. Credit Cards) • Coins
Recommended for • Glossy Material • Metal • Metal/Plastic Compounds,
e. g. Printed Circuit Boards
10 11
Combined Diffuse + Coaxial Light Goniometric Light
Cylinder Lens
LENS
Sensor Board
LED B
oard
LED
Target
20°
0°10
°
0°
10°
20°
Mov
ing S
tage 0°
0°
LED B
oard
Cylinder Lens
LENS Cylinder Lens
Target
Sensor Board
LED
Board
LED
Light GuideMirror
LED B
oard
LED
LED BoardLED
Recommended for • Processing varying stuff • Prototyping
12 13
Working with total reflection
Cylinder Lens
LENS
LED B
oard
LED
LE
NS
Sensor Board
HolograficDiffuser
Target
Recommended for • Scratches on Glass • Scratches on Metal
Coupling Light into the Object
LED
Boa
rd
LED
LENS
Sensor Board
Transparent Target
LED
Boa
rd
LED
Recommended for • transparent media • bubble detection • inclusion detection
14 15
Sensor Board
Watermark Metal Stripe
LENS
Sensor Board
Watermark Metal Stripe
LENS
Working with Plain Backlight Dealing with Watermarks
Cylinder Lens
LED Board
LED
LENS
Sensor Board
Holografic Diffusor
Target
Recommended for
• pinholes in opaque material • transparent stuff • translucent stuff • watermarks • metal stripes in paper
Suppressing WatermarksEnhancing Watermarks
Illuminating with the same Intensity from front and rear side will make Watermarks and Security Features disappear
16 17
Working With Polarized Backlight
Cylinder Lens
LED Board
LED
LENS
Sensor Board
Glass
Polarizer
Diffuser
Recommended for
• detecting stress in glass • detecting stress in transparent plastics
Working with Parallelized Backlight
Sensor Board
Sensor
StraylightBlocking Filter
parallel Laser Beam
Recommended for • transparent media where high DOF (Depth of Field) is required • Crankshaft inspection
18 19
Sensor Board
LED
Point Source
Shadow
Sensor Board
LED
Point Source
Shadows
Cross Section
Operating Principle
VIS blocking filter
LENS
Sensor Board
LENS
LED B
oard
UV LED
UV blocking filter
Target
Fluorescence Setup Triangulation
Recommended for • crack detection in steel (in magnetic field) • general fluorescence applications
20
LED 1
Sensor Line
Target
Sensor Line
LED 2
Target
Sensor Line
LED 3
Target
RGB Data Output
Shadow
Shadow
Shadow
Triangulation – Timing Sequence
Running a CIS with Triangulation, 3 Flashes, 3 Shadow Images, mapped onto RGB Image
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