Optical: systems and elements – Glare or unwanted light reduction
Patent
1990-06-15
1991-12-17
Arnold, Bruce Y.
Optical: systems and elements
Glare or unwanted light reduction
351165, 351 44, 359629, 359900, G02B 2700, G02C 710
Patent
active
050730096
ABSTRACT:
The method of making an optical layered structure having irregularities on a surface contained therein, so that an image of said surface irregularities is reflected, while permitting coherent light transmission through said structure, comprising: a first clear hardenable plastic layer having irregularities on a first surface thereof; applying a first transparent medium to a surface of said first plastic layer opposite said first surface; applying a second clear hardenable plastic layer to fill in the irregularities on said first surface of said first plastic layer; applying one surface of a second transparent medium directly to the second plastic layer in adhering relationship thereto, where one of the opposing surfaces of the second transparent medium is smooth and becomes the outside surface of said optical layered structure formed by the first transparent medium, the first and second plastic layer, and the second transparent medium. The invention also relates to the structure formed by such method.
REFERENCES:
patent: 4315665 (1982-02-01), Haines
patent: 4609266 (1986-09-01), Blom
Arnold Bruce Y.
Hanes Richard W.
Phan James
Theoretical Optics, Inc.
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