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, 1979
Filed:
Apr. 17, 1978
Applicant:
Inventors:
Nathan Gottlieb, Kenmore, NY (US);
Milton H Sussman, Amherst, NY (US);
Assignee:
American Optical Corporation, Southbridge, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 89 ; 350 91 ;
Abstract
The annular reflector for a dark-field, vertically-illuminated microscope objective must have a peculiar curvature to obtain a uniform distribution of the light on the object surface being viewed. Four reflectors are disclosed. Each reflector is suitable for use in a respective microscope objective.