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.
Patent No.:
Date of Patent:
Feb. 02, 1988
Filed:
Jul. 01, 1986
Applicant:
Inventor:
Tatsuo Shimazaki, Tokyo, JP;
Assignee:
Casio Computer Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G03B / ;
U.S. Cl.
CPC ...
350336 ; 3503 / ; 3503 / ; 350432 ; 353 69 ; 353122 ;
Abstract
A liquid-crystal projector reduces outer portions of a light beam corresponding to a projection image from a liquid-crystal display panel illuminated with light from a light source by a light beam width reduction lens array in order to increase the luminance of the outer beam portions. The projection image passing through the light beam width reduction lens array is compensated for attenuation in luminance of the outer beam portions, and is then projected onto a screen surface through a projection lens system.
Shimazaki, Tatsuo. (1988). Liquid-crystal projector with light beam reduction lens array for (U.S. Patent No. 4722593). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4722593
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile