Photochromic light control mirror
First Claim
1. A variable reflectivity mirror comprising:
- a housing;
photochromic means disposed in said housing for receiving light to be reflected, said photochromic means being transmittable to visible light;
reflecting means disposed near said photochromic means for reflecting visible light transmitted through said photochromic means; and
ultraviolet light source means within said housing for illuminating said photochromic means with ultraviolet light, wherein the transmittance of visible light of said photochromic means changes in response to illumination by ultraviolet light.
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Accused Products
Abstract
A photochromic light control mirror comprises a photochromic substrate having a reflective film deposited at one side thereof. Alternatively, a mirror (i.e., a layer of glass having a reflective film deposited at one side thereof) is coated with a photochromic coating. An ultraviolet light source illuminates the photochromic material to change the reflectance of the mirror. The reflectance can be manually controlled whereby the intensity of the light source is controlled by adjusting the voltage driving the light source. Alternatively, the reflectance can be automatically controlled whereby the intensity of the light source is controlled by a photo detector which varies the voltage driving the light source in response to detected light.
37 Citations
31 Claims
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1. A variable reflectivity mirror comprising:
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a housing; photochromic means disposed in said housing for receiving light to be reflected, said photochromic means being transmittable to visible light; reflecting means disposed near said photochromic means for reflecting visible light transmitted through said photochromic means; and ultraviolet light source means within said housing for illuminating said photochromic means with ultraviolet light, wherein the transmittance of visible light of said photochromic means changes in response to illumination by ultraviolet light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification