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:
Apr. 15, 2003
Filed:
Sep. 28, 2000
Masataka Hamada, Osakasayama, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
A spatial modulator, a luminous flux deflector, a focus detection apparatus and a imaging device, which are capable of changing the focal position. The focus detection device includes: a focus sensor; liquid crystal cells that are arranged between a lens and the focus sensor and deflect luminous flux guided from the lens to the focus sensor while enabling a deflection characteristic of the luminous flux guided from the lens to the focus sensor to be changed; and a microcomputer for controlling the liquid crystal cells according to the size, position and so on upon an exit pupil of the lens and changing the deflection characteristic of the luminous flux guided from the lens to the focus sensor.