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. 01, 2011
Filed:
May. 09, 2008
Yusuke Nanjo, Kanagawa, JP;
Masafumi Sueyoshi, Kanagawa, JP;
Yusuke Nanjo, Kanagawa, JP;
Masafumi Sueyoshi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A tilt lens system includes a focus lens unit movable during focusing; a diaphragm sharing a primary optical axis with the focus lens unit; and a tilt lens unit, arranged on an image side of the focus lens unit and the diaphragm, having a negative refractive power and an optical axis tiltable with respect to the primary optical axis. Conditional Expressions (1) and (2) are satisfied as follows,1.3<βt<1.7  (1)0<P<H1  (2)where βt is a lateral magnification of the tilt lens unit in a not tilted state, P is a distance from a most object side surface of the tilt lens unit to a rotating center of the tilt lens unit in a tilted state, and His a distance from the most object side surface of the tilt lens unit to a first principal point of the tilt lens unit.