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. 27, 1990
Filed:
May. 27, 1988
Applicant:
Inventors:
Takao Okada, Hachioji, JP;
Hisanari Shimazu, Akishima, JP;
Akitoshi Toda, Hachioji, JP;
Susumu Sato, Akita, JP;
Assignee:
Olympus Optical Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G02B / ;
U.S. Cl.
CPC ...
3503 / ; 3503 / ; 350336 ; 350452 ;
Abstract
A liquid crystal lens includes a liquid crystal cell formed by lens component members, at least one of the lens component members being formed of a Fresnel lens whose surface is formed by a number of annular ring-shaped Fresnel grooves with their crests leveled.
Okada, Takao. (1990). Liquid crystal lenses having a fresnel lens (U.S. Patent No. 4904063). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4904063
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile