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:
Dec. 05, 1978
Filed:
Dec. 24, 1975
Applicant:
Inventor:
Milton H Sussman, Amherst, NY (US);
Assignee:
American Optical Corporation, Southbridge, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; G02B / ;
U.S. Cl.
CPC ...
350189 ; 350228 ; 350231 ; 3501 / ;
Abstract
A two-component microscope condenser consisting of a biconvex positive doublet as the first component and a convex-plano positive doublet as the second component has excellent correction for spherical aberration and coma with significant reduction of pupillary aberration. The front pupil plane of the condenser is located external to the glass in order to provide utility of the condenser in microscope techniques requiring positioning of optical elements in the pupil plane. A negative lens may be combined with one embodiment of the invention to provide a longer working distance.