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:
Jul. 10, 2012
Filed:
Jun. 16, 2009
Kanae Uno, Shibuya-Ku, JP;
Kazunari Hanano, Shibuya-Ku, JP;
Kanae Uno, Shibuya-Ku, JP;
Kazunari Hanano, Shibuya-Ku, JP;
Olympus Medical Systems Corp., Tokyo, JP;
Abstract
The invention relates to a light source optical system for endoscopes which is compatible with various viewing modes, prevents an associated light source apparatus from growing bulky, and makes sure brightness. The light source optical system comprises, in order from the light source, the collective optical systemfor collecting light from the light source, the magnification conversion optical systemfor reducing a pupil magnification, and the positive lens groupfor collecting light from the magnification conversion optical system, and satisfies Condition (1) with respect to the principal point-to-point distance d of the collective optical systemand magnification conversion optical system, the rear focal length fof the collective optical systemand the front focal length fof the magnification conversion optical system