Thin light reflectant surface and method for making and using same
First Claim
1. A method of improving light reflectivity in a device requiring diffuse reflectivity of light comprisingproviding a microporous polymer comprising a reflectant material with an index of refraction greater than or equal to 1.42,and selected from the group consisting of nylon, polyvinylidene (PVDF), and cellulose acetate, a porosity of greater than 10%, and less than about 0.25 mm in thickness;
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whereby the reflectant material provides diffuse reflectivity with greater than 90% of the light striking the reflectant material reflecting from the material.
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Accused Products
Abstract
The present invention is an improved material and method for use for providing diffuse reflectivity of light. It has been determined that by employing a polymer having an index of refraction of greater than or equal to 1.42 and a porosity of greater than 10%, improved reflectivity can be achieved over existing reflectant materials having only one of these properties. Suitable materials for use in the present invention include nylon, polyvinylidene (PVDF), and cellulose acetate.
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Citations
14 Claims
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1. A method of improving light reflectivity in a device requiring diffuse reflectivity of light comprising
providing a microporous polymer comprising a reflectant material with an index of refraction greater than or equal to 1.42,and selected from the group consisting of nylon, polyvinylidene (PVDF), and cellulose acetate, a porosity of greater than 10%, and less than about 0.25 mm in thickness; - and
mounting the reflectant material within the device to cause light energy to reflect off it; whereby the reflectant material provides diffuse reflectivity with greater than 90% of the light striking the reflectant material reflecting from the material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of providing improved diffuse reflectivity of light in a device comprising
providing a reflectant material comprising a polyamide polymer having an index of refraction of greater than or equal to 1.42, a porosity of greater than 10%, less than about 0.25 mm in thickness, the reflectant material being flexible so as to allow the material to be readily formed into various shapes; - and
mounting the reflectant material within the device to cause light energy to reflect off it; whereby the reflectant material provides diffuse reflectivity with greater than 90% of the light striking the reflectant material reflecting from material. - View Dependent Claims (11, 12, 13, 14)
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Specification