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. 13, 1993
Filed:
Jul. 12, 1991
Toyoharu Hanzawa, Fuchu, JP;
Tomonori Ishikawa, Hachiouji, JP;
Shinichi Nakamura, Hachiouji, JP;
Hiroshi Fujiwara, Hachiouji, JP;
Masahiko Kinukawa, Hachiouji, JP;
Kimihiko Nishioka, Hachiouji, JP;
Masami Hamada, Akishima, JP;
Takashi Fukaya, Hachuouji, JP;
Shigeo Tokunaga, Hino, JP;
Yoshihiro Kawano, Hachiouji, JP;
Masaaki Yamagishi, Hachiouji, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A stereomicroscope is equipped with an objective lens, a variable magnification optical system having an optical axis common with that of the objective lens, a splitting optical system splitting emergent light from the variable magnification optical system into a plurality of optical paths, and an eyepiece disposed in at least one of the optical paths, having a diameter larger than the interpupil distance of an observer. Thus, the stereomicroscope has advantages that, with a simple structure and easy adjustment, many people can make observations, the mountings of photographic and TV devices are possible, the directions in which plural observers see through the microscope can be changed, and eyestrain is difficult to occur which may be caused by the difference in magnification between the images of a bilateral observation optical system.