All-polymeric cold mirror
First Claim
1. An all polymeric cold mirror of at least first and second diverse polymeric materials, the mirror comprising a sufficient number of alternating layers of said first and second polymeric materials such that at least 50% of light across the visible range of wavelengths between about 380-680 nm incident on said polyemric cold mirror is reflected and at least 80% of infrared light of wavelengths of between about 680-2000 nm is transmitted or absorbed, said alternating layers of said first and second polymeric materials having a layer thickness gradient across the thickness of said mirror.
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Abstract
An all-polymeric cold mirror which reflects visible wavelengths while transmitting a substantial portion of infrared wavelengths is provided. The mirror includes a sufficient number of alternating layers of at least first and second diverse polymeric materials such that at least 50% of peak reflecting visible light of a wavelength of between about 380-680 nm incident on the mirror is reflected and at least 50% of infrared light between about 680-2000 nm is transmitted or absorbed. The mirror may be designed so that it either reflects or absorbs ultraviolet light.
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Citations
25 Claims
- 1. An all polymeric cold mirror of at least first and second diverse polymeric materials, the mirror comprising a sufficient number of alternating layers of said first and second polymeric materials such that at least 50% of light across the visible range of wavelengths between about 380-680 nm incident on said polyemric cold mirror is reflected and at least 80% of infrared light of wavelengths of between about 680-2000 nm is transmitted or absorbed, said alternating layers of said first and second polymeric materials having a layer thickness gradient across the thickness of said mirror.
Specification