Automatic glare reduction side-mirror for trucks, truck cabs and sports utility vehicles
First Claim
1. A side rear-view mirror for use in trucks, truck cabs and sports utility vehicles, comprising:
- a. reflective element means for reflecting light impinging thereon;
b. a liquid crystal light dimming cell disposed adjacent to said reflective element means;
c. dimming means electrically connected to said liquid crystal cell for applying dimming voltage to liquid crystals therewithin;
d. heating means for heating said liquid crystal cell;
e. control means for maintaining the temperature of said liquid crystal cell substantially constant, within the operating range of said liquid crystals;
f. insulating means for insulating said liquid crystal cell from high velocity air flow surrounding said mirror; and
g. sensor means responsive to vehicle headlight beams impinging on said reflective element and associated with said dimming means, for increasing said dimming voltage in direct proportion to impinging light intensity to thereby control dimness of said liquid crystal cell.
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Accused Products
Abstract
A side rear-view mirror for land vehicles comprises a liquid crystal cell formed by applying a liquid crystal coating over a pair of transparent conducting electrodes positioned in front of a reflecting mirror. Heating means cooperate with a temperature sensor to maintain the temperature of the liquid crystal cell substantially constant within operating limits of liquid crystals therewithin. Dimming means electrically connected to said liquid crystal cell apply dimming voltage to the liquid crystals. Insulating means encapsulate the liquid crystal cell within an envelope, thereby insulating the liquid crystals from high velocity air flow surrounding said mirror. Sensor means responsive to vehicle headlight beams impinging on said reflective element cooperate with the dimming means to increase the dimming voltage in direct proportion to impinging light intensity. The side rear-view mirror affords a greater than 90 percentile reflection, and automatic glare reduction for trucks, truck cabs and sport utility vehicles.
2 Citations
8 Claims
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1. A side rear-view mirror for use in trucks, truck cabs and sports utility vehicles, comprising:
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a. reflective element means for reflecting light impinging thereon;
b. a liquid crystal light dimming cell disposed adjacent to said reflective element means;
c. dimming means electrically connected to said liquid crystal cell for applying dimming voltage to liquid crystals therewithin;
d. heating means for heating said liquid crystal cell;
e. control means for maintaining the temperature of said liquid crystal cell substantially constant, within the operating range of said liquid crystals;
f. insulating means for insulating said liquid crystal cell from high velocity air flow surrounding said mirror; and
g. sensor means responsive to vehicle headlight beams impinging on said reflective element and associated with said dimming means, for increasing said dimming voltage in direct proportion to impinging light intensity to thereby control dimness of said liquid crystal cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification