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. 28, 2012
Filed:
Apr. 09, 2008
Tsuneto Iwasaki, Kitakyushu, JP;
Akihiko Tawara, Fukuoka, JP;
Tsuneto Iwasaki, Kitakyushu, JP;
Akihiko Tawara, Fukuoka, JP;
University of Occupational and Environmental Health, Japan, Kitakyushu-shi, Fukuoka, JP;
Nikon Vision Co., Ltd., Tokyo, JP;
Abstract
Shift lensesL,R are provided on optical axes that pass through LCDsL,R for displaying an image for focusing. The shift lensesL,R are moved along the optical axes by pressing a focus button provided on a casein accordance with an instruction displayed on the LCDsL,R. An amplitude of accommodation is calculated on the basis of a position where the image starts blurring upon moving the shift lensesL,R from a far point side focus position, and a position where the image starts blurring upon moving the shift lensesL,R from a near point side focus position.