Device having reflective and transmissive properties
First Claim
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1. A device having transmissive and reflective properties produced by the process comprising the steps of:
- providing a transparent photosensitive film;
providing a reflective metal layer on a surface of the photosensitive film;
removing the reflective metal layer in a predetermined region to expose the photosensitive film in the predetermined region; and
changing the optical characteristics of the photosensitive film in the predetermined region to alter the index of refraction of the photosensitive film in the predetermined region to thereby form an altered refractive index area.
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Abstract
A device which simultaneously maximizes light reflectivity from one side of the device while maximizing light transmissivity from the opposite side of the device. The device is configured with distinct regions of transparency and reflectivity including a plurality of reflective structures. The structures are generally smaller towards a light transmitting side of the device and larger towards a light reflective side of the device.
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Citations
15 Claims
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1. A device having transmissive and reflective properties produced by the process comprising the steps of:
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providing a transparent photosensitive film;
providing a reflective metal layer on a surface of the photosensitive film;
removing the reflective metal layer in a predetermined region to expose the photosensitive film in the predetermined region; and
changing the optical characteristics of the photosensitive film in the predetermined region to alter the index of refraction of the photosensitive film in the predetermined region to thereby form an altered refractive index area. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device having transmissive and reflective properties produced by the process comprising the steps of:
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providing a photosensitive film having a first surface and a second surface;
forming a photoresist layer on the first surface of the photosensitive film;
changing the optical characteristics of the photosensitive film in a predetermined region by exposing the predetermined region of the film to a light source to alter the index of refraction of the film in the predetermined region to thereby form an altered refractive index area and to expose the photoresist layer in the predetermined region to the light source;
removing the exposed photoresist layer in the predetermined region using a suitable etchant creating an opening;
depositing a reflective metal layer in the opening previously occupied by the exposed photoresist layer; and
removing the remaining photoresist layer. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification