The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 20, 1988

Filed:

Aug. 23, 1985
Applicant:
Inventors:

Yasuaki Kai, Yokohama, JP;

Takatoshi Sagawa, Yokohama, JP;

Hiroshi Tabata, Yokohama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
3502 / ; 3502 / ;
Abstract

An inventive light-shader can prevent reduction of contrast ratio of views in a display, generation of moires and devastion of images in the views. The light-shader is made up of a light-shading film and a light-transmissive substrate plate. The film includes a plurality of opaque walls standing along its thickness and defining corresponding light-transmissive cells. The light-transmissive substrate plate has one surface attached to one surface of the film and the other surface microscopically rugged. The light-shader is applicable to automotive television sets, computer displays, indicative plates of various meters of automotive vehicles, ships and airplanes, and the like.


Find Patent Forward Citations

Loading…