Arbitrary surface optical element and method of making the same
First Claim
Patent Images
1. An optical element, comprising:
- a part having a non-optical portion and a optical portion, the non-optical portion circumscribing edges of the optical portion and having a thermal mass greater than the optical portion such that the cooling rates of the non-optical and optical portions during joint manufacture are about equal to counteract edge effect experienced by the combined portions during the joint manufacture; and
a thin film layer on at least the optical portion, the thin film including one or more of a polarizing layer, a photochromic layer, a melanin layer, a mirror layer, a color filter, or an infrared filter.
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Accused Products
Abstract
An arbitrary surface optical element, such as a mirror for use in a rear projection television, includes a non-optical portion and an optical portion. The non-optical portion circumscribes the optical portion and has a thickness greater than the optical portion. Accordingly, the two portions cool at approximately the same rate, thereby minimizing warpage from differential cooling.
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Citations
21 Claims
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1. An optical element, comprising:
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a part having a non-optical portion and a optical portion, the non-optical portion circumscribing edges of the optical portion and having a thermal mass greater than the optical portion such that the cooling rates of the non-optical and optical portions during joint manufacture are about equal to counteract edge effect experienced by the combined portions during the joint manufacture; and a thin film layer on at least the optical portion, the thin film including one or more of a polarizing layer, a photochromic layer, a melanin layer, a mirror layer, a color filter, or an infrared filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A display, comprising:
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a screen; an optical engine that projects images; and a first mirror positioned to reflect the images from the optical engine onto the screen, the mirror having a non-optical portion and an optical portion, the non-optical portion circumscribing edges of the optical portion and having a thermal mass greater than the optical portion such that the cooling rates of the non-optical and optical portions during joint manufacture are about equal to counteract edge effect experienced by the combined portions during the joint manufacture. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification