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:
May. 07, 2002
Filed:
Oct. 27, 1999
Jitsunari Kojima, Hachioji, JP;
Kazuhiko Tsubota, Komagane, JP;
Keiichi Iizuka, Ina, JP;
Tetsuo Tatsuda, Ina, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A photometric apparatus for a microscope comprises a light-reception element having a plurality of concentrically arranged photometric measurement areas, the light-reception element receiving observation light from the microscope and measuring a brightness of an observation image of the observation light, a calculation circuit for calculating an exposure time necessary for photographing the observation image, on the basis of a photometric measurement value obtained from at least one of the photometric measurement areas of the light-reception element, and a control circuit for performing an exposure operation on the basis of the exposure time calculated by the calculation circuit.