Liquid crystal mirror adapted to filter light in the mesopic wavelength region
First Claim
1. A mirror system, comprising a spectrally selective liquid crystal reflective assembly having a transmissive liquid crystal medium that when activated, substantially partially absorbs light at wavelengths from about 490 nanometers to about 550 nanometers, while transmitting light at other wavelengths, resulting in the mirror system reflecting light at the other wavelengths,wherein said liquid crystal reflective assembly is responsive to a voltage such that when said voltage is applied across said liquid crystal reflective assembly, a reflectance level of said liquid crystal reflective assembly is altered,wherein said liquid crystal reflective assembly further comprises an electronic circuitry for varying a level of said voltage at a predetermined rate thereby altering a reflectance level of said liquid crystal reflective assembly at said predetermined rate,wherein said electronic circuitry is designed and configured to receive ambient light information and rear light information, and to select said level of said voltage and said predetermined rate based on said ambient light information, said rear light information or a combination thereof.
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Accused Products
Abstract
A mirror system, comprising a spectrally selective liquid crystal reflective assembly, designed and constructed to substantially absorb or transmit light at wavelengths corresponding to mesopic conditions, while reflecting light at other wavelengths. In one embodiment, the reflectance level of the mirror system is altered in response to a voltage applied across the selective liquid crystal reflective assembly.
23 Citations
28 Claims
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1. A mirror system, comprising a spectrally selective liquid crystal reflective assembly having a transmissive liquid crystal medium that when activated, substantially partially absorbs light at wavelengths from about 490 nanometers to about 550 nanometers, while transmitting light at other wavelengths, resulting in the mirror system reflecting light at the other wavelengths,
wherein said liquid crystal reflective assembly is responsive to a voltage such that when said voltage is applied across said liquid crystal reflective assembly, a reflectance level of said liquid crystal reflective assembly is altered, wherein said liquid crystal reflective assembly further comprises an electronic circuitry for varying a level of said voltage at a predetermined rate thereby altering a reflectance level of said liquid crystal reflective assembly at said predetermined rate, wherein said electronic circuitry is designed and configured to receive ambient light information and rear light information, and to select said level of said voltage and said predetermined rate based on said ambient light information, said rear light information or a combination thereof.
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16. A mirror system, comprising a spectrally selective liquid crystal reflective assembly comprising a transmissive liquid crystal medium that preferentially absorbs light corresponding to mesopic conditions and reflects light at the non-absorbed wavelengths,
wherein said liquid crystal reflective assembly is responsive to a voltage such that when said voltage is applied across said liquid crystal reflective assembly, a reflectance level of said liquid crystal reflective assembly is altered, wherein said liquid crystal reflective assembly further comprises an electronic circuitry for varying a level of said voltage at a predetermined rate thereby altering a reflectance level of said liquid crystal reflective assembly at said predetermined rate, wherein said electronic circuitry is designed and configured to receive ambient light information and rear light information, and to select said level of said voltage and said predetermined rate based on said ambient light information, said rear light information or a combination thereof.
Specification