Gentex Corporation

Michael T Stephenson

Henry A Luten

John S Anderson

Kevin L Ash

Leroy J Kloeppner

William L Tonar

David J Cammenga

George A Neuman

Bradley L Busscher

Jeffrey A Forgette

Gary Jay Dozeman

Mario F Saenger Nayver

Punam Giri

Sue F Franz

David I Driscoll

Barry K Nelson

Luke A Bomers

Zachary B Erno

Autumn N Lagowski

Steven D Looman

Carl N Wassink

Zachary J Petroelje

Michelle M Carroll

Garret C Denolf

Michael J VanAst

Dennis D Festerling, Jr

Sheng Liu

A window control system includes a plurality of electro-optic devices configured to control a transmittance of light through each of the plurality of zones, and at least one sensor configured to identify an intensity of light transmitted through the at least one window. A controller k in communication with the electro-optic devices and the at least one sensor. The controller is configured to independently control the transmittance of the light through each of the zones based on at least one of a direction of the light and an intensity of the light detected in a passenger compartment of a vehicle.

System and method for multi-zone dimming window system

A controller system configured to clear an electro-optic device may include an electro-optic device having a first substrate having a first surface and a second surface, the second surface having a first layer of electrically conductive material disposed thereon; a second substrate having a first surface having a second layer of electrically conductive material disposed thereon, and a second surface, the second substrate being approximately parallel to the first substrate such that a chamber is defined by the first and second substrates; and an electro-optic medium disposed in the chamber defined by the first and second substrates and in contact with the first and second layers of electrically conductive material; a controller in communication with the electro-optic device, wherein the controller is configured to control electrical power supplied to the electro-optic device and a potentiometer in communication with the electro-optic device and with the controller.

Pulse-width modulation for clearing electro-optic device

An electrochromic medium for use in an electro-optic device comprises a solvent comprising at least one low-volatile organic electrolyte solvent based on a cyclic carbonate ester; an anodic electroactive material; and a cathodic electroactive material; and at least one of the anodic and cathodic electroactive materials is electrochromic.

Low-volatile electro-optic electrolyte solvents containing cylic organic carbonates

An electrode for an electrochromic device includes a resistive layer disposed over a conductive layer. The resistive layer is disposed between the conductive layer and an electrochromic material in the electrochromic device. The electrode reduces non-uniform response of the electrochromic material when the electrochromic device is in operation.

Resistive coating for voltage uniformity

An imaging system is provided that includes an imager, an optical lens stack, and an electro-optic element positioned between the imager and the lens stack. The electro-optic element includes a first substantially transparent substrate defining first and second surfaces. The second surface includes a first electrically conductive layer. A second substantially transparent substrate defines third and fourth surfaces. The third surface has a second electrically conductive layer. A primary seal is disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. An electro-optic medium is disposed within the cavity. The electro-optic medium is operable between substantially clear and substantially opaque states.

Electro-optic infrared filter

An electrical control system for controlling a variable transmittance window is disclosed. The system comprises a driver circuit in communication with an electro-optic element. A controller is in communication with the driver circuit. The controller is configured to identify a temperature condition of the electro-optic element and adjust an output voltage supplied to the electro-optic element in response to the temperature condition.

Thermal control of variable transmittance windows

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Holland, MI, United States of America

Michael T Stephenson