G - Physics – 02 – C
Patent
G - Physics
02
C
88/114, 154/45,
G02C 7/10 (2006.01) C03C 27/10 (2006.01) G02B 1/10 (2006.01) G02B 27/02 (2006.01) G02B 27/22 (2006.01) G02C 7/02 (2006.01)
Patent
CA 2000079
A method of restoring the coherent light transmitting property of a first plate-like transparent medium which has a specific index of refraction and whose surface irregularities produce light scattering image distortion, which comprises the steps of applying a clear hardenable plastic to the said irregular surface, where such plastic has an index of refraction substantially similar to the index of refraction of the transparent medium and then applying one surface of a second separate part of the transparent medium directly to the plastic in adhering relationship thereto, where one of the opposing surfaces of the transparent medium is smooth and becomes the outside surface of a laminate formed by the first transparent medium, the plastic and the second part of the transparent medium. In structural form, an optical system comprising laminated light transmitting plate elements including a first layer having a smooth exterior surface and an opposing inner surface sculptured with forms and figure topographically contouring the inner surface of that layer in a three-dimensional relief, a light reflective film carried by the sculptured inner surface and a second light transmitting layer secured to the inner surface of the first lens layer. The optical system as described transmits coherent light through the entire body of the system and reflects light from the contoured coating to create an image of the bas relief object to an observer. Certain light scattering images reflectively coated eliminate secondary light reflections within the lens itself over the area coincident with the coating.
Johnson Ernest Peter
Theoretical Optics Inc.
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