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:
Aug. 01, 1989
Filed:
Oct. 16, 1987
Tadafumi Fujihara, Tokyo, JP;
Yoshihiro Shimada, Tokyo, JP;
Chikara Nagano, Tokyo, JP;
Katsuo Tsukamoto, Sendai, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
In order to be suited for long-term use in an enclosed space and to enable various modes of illumination by simple procedures and at a low cost without adding special optical components, the illuminating device for microscopes of the invention comprises a surface light source including a plural number of semiconductor light sources arranged in two dimensions, a control circuit selectively lighting some or all of the plural number of semiconductor light sources in conjunction with selection of an illumination mode, and an optical system for condensing and transmitting the light from the surface light source. The illuminating device of the invention makes it possible to observe a sample simultaneously in different illumination modes when the illuminating device is equipped with three surface light sources and the sample is irradiated simultaneously with the lights from the three surface light sources.