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20141130 Electrochromic Sunglasses & Goggles | Cutting Edge Technology | Ashwin-Ushas Corp. | Ashwin-Ushas Corp.

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Ashwin electrochromicsunglasses prototype, auto-switching while going fromindoors to outdoors; winter

snow and sun.

Ashwin electrochromicsunglasses prototype, auto-switching while going from

indoors to outdoors.

YOU ARE HERE: HOME / ELECTROCHROMIC SUNGLASSES & GOGGLES

Electrochromic Sunglasses & GogglesBest-Performing, Highest Contrast, Fastest Switching, Most Practical andInexpensive Electrochromic Sunglasses and Goggles to Date SwitchAutomatically, Based on Ambient Light

Have you seen photochromic

sunglasses worn by many people

with prescriptions, which

automatically darken when going

outdoors, and always wondered

why they couldnt switch much

faster, give more varied shades of

darkness, also work indoors and

inside automobiles, and be available

as just regular, fashionable

sunglasses without prescriptions?

Well, such a product, in the form of

Ashwin electrochromic sunglasses

and goggles, is finally here and will

shortly be available commercially.

Ashwin electrochromic sunglasses and goggles automatically switch to different shades of darkness in

response to ambient light in less than 2 seconds. They have appealing shades of color (transparent to

light gray to blue-gray to dark blue-black). They work indoors and in automobiles and are very

lightweight. They need to be recharged only after three or more days of heavy use (much less than

DEVELOPEDTECHNOLOGIES

EMERGINGTECHNOLOGIES

ELECTROCHROMICSUNGLASSES & GOGGLES

ELECTROCHEMICALINSTRUMENTATION

ABOUTASHWIN-USHAS

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your cell phone). And theyre much, much less expensive than photochromics.

Theyre perfect for that hike in the woods on a sunny day, with the sun alternating between peeking

brightly through the leaves or being heavily shaded by them. Theyre also perfect for the

construction worker going rapidly in and out of very dark and light areas while working on a

skyscraper 20 floors above the street.

Theyre also available with prescription inserts, for those having prescriptions.

Learn moreASHWIN ELECTROCHROMIC SUNGLASSES AND GOGGLES

TECHNICAL PERFORMANCE PARAMETERS

TECHNOLOGY BASIS

COMPARISON WITH OTHER ELECTROCHROMIC TECHNOLOGIES

OTHER FEATURES

DATA: ELECTROCHROMIC PERFORMANCE AND APPEARANCE

DATA: TYPICAL PERFORMANCE DATA

RELEVANT LITERATURE REFERENCES

AVAILABILITY AND FURTHER INFORMATION

ASHWIN ELECTROCHROMIC SUNGLASSES AND GOGGLES

Electrochromic, changing color (lightening or darkening) with a small, applied DC voltage

supplied via a rechargeable Li battery. So they work indoors and in automobiles, unlike

photochromics, which need UV light for activation.

Automatically adjust to the brightness of the ambient light with continuously varying shades

of darkness: Activated by photosensor interfaced to sophisticated Microcontroller.

Have appealing shades of color (transparent to light gray to blue-gray to dark blue-black).

Switch rapidly: Dark to light almost instantaneously (less than 1 second). Light to dark in less

than 2 seconds. Compare with photochromics (15 seconds to several minutes).

Have the highest known light/dark contrast and fastest switching time of any electrochromic

materials to date.

Need to be recharged only after three or more days of heavy use (much less than your cell

phone).

Have a sophisticated Microcontroller and rechargeable battery built invisibly and seamlessly

into the glasses or goggles frame.

Are based on patented electrochromic Conducting Polymer and control algorithm



Ballistic test of Ashwin electrochromic goggles prototype, showingconformity with MIL-PRF-32432 specifications.

technologies.

Accommodate prescription lens inserts, for those having eye prescriptions.

The safety version of the glasses and goggles are compliant with ANSI Z87.1 (an industrial

safety standard) and GL-PD 10-12 (a US military standard).

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TECHNICAL PERFORMANCE PARAMETERS

Contrast (integrated

across Visible

spectrum, 400 nm

(violet) to 700 nm

(red), using industry-

standard algorithm):

Typically 70%

to 7%

Transmission

for light

electrochromic lenses.

Typically 50% to 5% Transmission for dark electrochromic lenses.

These light/dark %Transmission contrast values are the highest reported to date.

Note that these %Transmission values are measured against air reference, i.e. they are

real-life, unlike many values reported in the literature, which are against substrate

reference and thus show light-state %Transmission values of 90% or higher, whereas

even clear window glass has a %Transmission of only about 87%.

Switching times: Dark to light, < 1 second. Light to dark, < 2 seconds. Fastest switching time of

any electrochromic materials to date.

Broad-band response, 400 to 700 nm.

Very good optical memory (remembering the color theyre in when the power supply is turned

off).

Naturally UV-blocking.

Non-polarized. So you can read your automobile displays without a problem while driving.

Cyclability: Tested to 10,000 light/dark switches without observable degradation.

Shelf life indefinite. (The lenses are unaffected by ambient oxygen and moisture.)

Haze (a parameter showing how clear through-vision is, with a value of



Demonstrated environmental durability: To extreme temperatures (-30 to +65C), extreme

humidity, salt-spray, etc. Safety versions conform to ANSI Z87.1, US Military GL-PD 10-12.

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TECHNOLOGY BASIS

Based on unique, patented dual-polymer (complimentary-polymer) Conducting Polymer

electrochromic system, with paired anodically- and cathodically-coloring polymers on

opposite electrodes in a sandwich configuration. In contrast to other dual-polymer systems,

our complimentarily-coloring polymers are nearly perfectly matched electrochemically and

electrochromically. The cathodically-coloring polymers used are newly synthesized by us.

Also based on a unique, patented applied-voltage algorithm (applied via a sophisticated

Microcontroller) that reduces the switching time from 5 to 8 seconds in lab prototypes to < 2

seconds in the sunglasses/goggles.

Also employs unique Haze-reduction technology to reduce Haze to < 2%.

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COMPARISON WITH OTHER ELECTROCHROMIC TECHNOLOGIES

Switching sunglasses based on LCDs (liquid crystal displays) switch very rapidly (nearly

instantaneously). However, these are more like shutters (not electrochromics), and nearly all

have only an extreme-dark and extreme-light state, with no provision for states of

intermediate darkness. They are also naturally polarized (so you cant see that automobile

display through them) and are bulky or heavy.

Metal-oxide (e.g. WO ) based electrochromics have poor stability, comparatively poor

light/dark contrast, are bulky, and have high cost.

Other Conducting Polymer based electrochromics, including dual-polymer based ones, have

much poorer performance. They also have high Haze and other undesirable qualities.

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OTHER FEATURES

Are also available as appliqus (films) that can be applied to any surface with pressure-sensitive

adhesive, useful for application to larger areas. For more detail on this feature, Contact Us.

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DATA: ELECTROCHROMIC PERFORMANCE AND APPEARANCE

3

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Sunglasses prototype withoutprescription insert, typical

light/dark contrast

Typical extreme-light/extreme-dark contrast, with

Microcontroller also shown.Intermediate-light/intermediate-

dark.

Representative L*,a*,b* values(CIE coordinates, i.e. color

profile), and actual colors, forAshwin electrochromicsunglasses and goggles

Safety sunglasses prototype with prescription insert: Typical light/darkcontrast.

Safety sunglasses prototype withprescription insert: bare

sunglasses

Safety sunglasses prototype withprescription insert: bare

sunglasses

Safety sunglasses prototype withprescription insert: schematic

Safety goggles prototype Safety goggles schematic

Microcontroller

Click images to enlarge.

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Example of exceptionalflexibility, durability and thinness

of electrochromic lens.





Spectra showing light/dark contrast

Note: Spectra shown are actual data, against air

reference, rather than against substrate, as reported

by most researchers in the field. For reference note

that even clear window glass will have flat

Transmission at about 87%.

Switching data, including: Comparison of patented

applied-voltage algorithm with standard lab

potentiostat (power supply); switching after 550

cycles; comparison of various polymers; and long

term cyclability data, to 10,000 cycles

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DATA: TYPICAL PERFORMANCE DATA

Click tables and graphs to enlarge.

http://ashwin-ushas.com/auc/wp-content/uploads/2014/11/Electrochromic-Sunglasses-21.jpghttp://ashwin-ushas.com/auc/wp-content/uploads/2014/11/Electrochromic-Sunglasses-22.jpghttp://ashwin-ushas.com/auc/wp-content/uploads/2014/11/Electrochromic-Sunglasses-23.jpghttp://ashwin-ushas.com/auc/wp-content/uploads/2014/11/Electrochromic-Sunglasses-24.jpghttp://ashwin-ushas.com/auc/wp-content/uploads/2014/11/Electrochromic-Sunglasses-27.jpg



Representative Haze data

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RELEVANT LITERATURE REFERENCES

Journal of Applied Polymer Science, 2014, 131(22), 41043 (November 2014). DOI:

10.1002/app.41043

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AVAILABILITY AND FURTHER INFORMATION

http://ashwin-ushas.com/auc/wp-content/uploads/2014/11/Electrochromic-Sunglasses-25.jpghttp://ashwin-ushas.com/auc/wp-content/uploads/2014/11/Electrochromic-Sunglasses-26.jpghttp://ashwin-ushas.com/auc/wp-content/uploads/2014/11/Haze-Data.jpghttp://ashwin-ushas.com/auc/wp-content/uploads/2014/11/Electrochromic-Sunglasses-28.jpghttp://ashwin-ushas.com/auc/wp-content/uploads/2014/11/Electrochromic-Sunglasses-29.jpghttp://ashwin-ushas.com/auc/wp-content/uploads/2014/11/Electrochromic-Sunglasses-30.jpghttp://onlinelibrary.wiley.com/doi/10.1002/app.41043/abstract



Expected to be offered for sale in the very near future by our affiliate company, AshChrom. For inquiries

and more information, please Contact Us.

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Variable-EmittanceInfrared (IR)-Electrochromic Skinsfor Spacecraft ThermalControlWorld leader in variableemittance and relatedIR-electrochromicmaterials.

Infrared (IR)-Electrochromic Skinsfor DynamicCamouflage andRelated ApplicationsWorld leader in IR-electrochromic materialsand the related variableemittance materials.

MicrowaveRemediation(Disposal) ofHazardous Medical(e.g. Hospital) WastesHighly innovative, greentechnology for localized,point-of-service medicalwaste remediation.

LEARN MORE...


Electro-OsmoticWater VaporTransport AcrossMembranes forHumidity Removalwith SimultaneousBlocking of HazardousChemicals, for use inSoldier and IndustrialUniforms in HazardousEnvironmentsInnovative technologyactively pushes outwater vapor from insidegarment.

Secondary andPrimary Li-ionBatteries Based onUnique Ionic LiquidElectrolytes, with VeryWide OperatingTemperature, VeryLong Shelf Life, Non-Flammability,Radiation Resistanceand High Capacity /PowerOriginally developed foruse in near-space or LEO.

VoltammetricElectrochemicalSensors for ChemicalWarfare Agents, ToxicIndustrial Compounds,Hazardous Chemicals,Metal Ions andExplosivesRapid, ppb- or sub-ppb-level detection, gooddiscrimination ofinterferents, portability,Android cell phone

ELECTROCHROMICSUNGLASSES &GOGGLES

Best-Performing,Highest Contrast,Fastest Switching,Most Practical, andInexpensiveElectrochromicSunglasses andGoggles to Date.AutomaticallySwitching Based onAmbient LightSwitch in less than 2seconds. Automaticallyadjust to ambient light.Work indoors and incars. Li battery rarelyneeds recharging.Available withprescription inserts.

LEARN MORE...


AshwinStat1:Inexpensive, All-in-One Potentiostat /Galvanostat, TeachingPotentiostat andField-PortableAnalysis InstrumentControllable byAndroid Cell Phone,with Wide CurrentRangeVery wide current range.ElectrochemicalImpedance Spectroscopy(EIS) and ACVoltammetrycapabilities. Comingsoon.

LEARN MORE...

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interface.

LEARN MORE...


Variable-Emittance

Infrared (IR)-

Electrochromic Skins

for Spacecraft Thermal

Control

Infrared (IR)-

Electrochromic Skins

for Dynamic

Camouflage and

Related Applications

Microwave

Remediation (Disposal)

of Hazardous (e.g.

Medical) Wastes


Electro-Osmotic Water

Vapor Transport

Across Membranes

Secondary and Primary

Li-ion Batteries

Voltammetric

Electrochemical Gas /

Vapor Sensors

Voltammetric

Electrochemical

Sensors

ELECTROCHROMICSUNGLASSES & GOGGLES

High Contrast

Electrochromic

Sunglasses & Goggles


AshwinStat1: Field-

Portable Analysis

Instrument

Controllable by

Android

ABOUTASHWIN-USHAS

Developer of advanced

technologies in the

defense, aerospace,

space, materials, and

environmental fields.

ASHWIN-USHAS CORPORATION

2 Timber Lane, Unit 301

Marlboro, NJ 07746-1443, USA

Phone +1 732-739-1122

Fax +1 732-739-1133

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