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:
Mar. 06, 2007
Filed:
Feb. 03, 2004
Katsuya Sakamoto, Hachioji, JP;
Katsuya Sakamoto, Hachioji, JP;
Konica Minolta Holdings, Inc., Tokyo, JP;
Abstract
An objective lens has a first meniscus-shape lens including a first object-side surface having a positive reflective power; and a second meniscus-shape lens having a positive reflective power. The first meniscus-shape lens and the second meniscus-shape are arranged in that order from an object side. The objective lens satisfies the following formulas:where f is an object-side focus length of the objective lens, fF is a front focus, fB is a back focus, Lis a length between an object-side principal point Hand an image-side principal point Hand L is a length on an optical axis of the objective lens between the first object-side surface and the second image-side surface.