Optical: systems and elements – Glare or unwanted light reduction – With mirror
Patent
1995-10-03
1997-10-07
Dzierzynski, Paul M.
Optical: systems and elements
Glare or unwanted light reduction
With mirror
359601, 359604, 359265, 359267, G02B 508, G02B 2700, G02F 115, G02F 1153
Patent
active
056754388
ABSTRACT:
An automatic antiglare mirror for a vehicle with its reflectivity being variably controlled by an electrochromic element includes a rear light detection circuit for detecting quantity of light in the rear of the vehicle, a coloration amount control circuit for controlling an amount of coloration the electrochromic element and a response speed control circuit for controlling response speed of the electrochromic element. The coloration amount control circuit performs control of the amount of coloration in such a manner that, when quantity of rear light is smaller, the amount of coloration of the electrochromic element is smaller whereas, when the quantity of rear light is larger, the amount of coloration of the electrochromic element is larger. The response speed control circuit performs control of the response speed in such a manner that, when the quantity of rear light is smaller, the response speed of the electrochromic element in a color imparting direction is lower whereas, when the quantity of rear light is larger, the response speed of the electrochromic element in the color imparting direction is higher.
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patent: 4793690 (1988-12-01), Gahan et al.
patent: 4886960 (1989-12-01), Molyneux et al.
patent: 4896030 (1990-01-01), Miyaji
patent: 5204778 (1993-04-01), Bechtel
patent: 5406414 (1995-04-01), O'Farrell et al.
patent: 5469296 (1995-11-01), Ohno et al.
Nagao Mitsuyoshi
Sato Hidenori
Dzierzynski Paul M.
Murakami Corporation
Sikd-er Mohammad Y.
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