Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2006-05-09
2006-05-09
Mack, Ricky L. (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S267000, C359S589000, C359S839000, C359S843000
Reexamination Certificate
active
07042616
ABSTRACT:
According to one embodiment of the present invention, an electrochromic rearview mirror assembly for a vehicle includes an electrochromic mirror having a variable reflectivity, a glare sensor for sensing levels of light directed towards the front element from the rear of the vehicle, an ambient sensor for sensing levels of ambient light, a display positioned behind the partially transmissive, partially reflective portion of the reflector for displaying information therethrough; and a control circuit coupled to the sensors and the display. The control circuit determines whether daytime or nighttime conditions are present as a function of the ambient light level sensed by the ambient sensor. During daytime conditions, the control circuit responds to light levels sensed by the glare sensor to control a contrast ratio of light originating from the display and light reflecting from the partially transmissive, partially reflective area of the reflector.
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Anderson John S.
Bugno Mark D.
Cammenga David J.
Forgette Jeffrey A.
Hall Philip B.
Gentex Corporation
Mack Ricky L.
Price Heneveld Cooper DeWitt & Litton LLP
Shultz Jr. James E.
Thomas Brandi
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