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:
Aug. 11, 2009
Filed:
Mar. 02, 2005
Takumi Tsuji, Chiba, JP;
Toru Udaka, Kanagawa, JP;
Masaki Ando, Chiba, JP;
Kazuhiro Tanaka, Tokyo, JP;
Takumi Tsuji, Chiba, JP;
Toru Udaka, Kanagawa, JP;
Masaki Ando, Chiba, JP;
Kazuhiro Tanaka, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A liquid crystal light control element, a lens barrel, and an imaging device, which are so designed as to adequately control the amount of light led to the imaging element at the time of photographing in a bright ambience are provided. The lens barrel includes an optical system, a liquid crystal light control element, and an imaging element. The object image captured by the optical system reaches the imaging element through the liquid crystal light control element, which is composed of a first liquid crystal light control unit, a second liquid crystal light control unit, and a first and a second liquid crystal layers, which are placed on top of the other in their thickness direction.