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:
Jun. 03, 1997
Filed:
May. 17, 1995
Noboru Amemiya, Fujisawa, JP;
Nikon Corporation, , JP;
Abstract
This invention has as its object to eliminate flare light as a cause of low contrast. A microscope objective lens has, in the following order from the object side, a front group having positive refracting power to convert a beam from an object into a convergent beam, and having a positive meniscus lens element with a concave surface facing the object side, and a cemented lens component disposed at the image side of the positive meniscus lens, and a rear group having negative refracting power, constituted by cementing a negative lens element and a positive lens element, and disposed at the image side of the front group. A last cemented lens component, disposed nearest to the image side, of the cemented lens component in the front group satisfies: