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:
Jan. 21, 2014
Filed:
Nov. 15, 2010
Applicants:
Masao Doi, Fuchu, JP;
Toshio Yamazaki, Mitaka, JP;
Inventors:
Masao Doi, Fuchu, JP;
Toshio Yamazaki, Mitaka, JP;
Assignee:
Mitaka Kohki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 21/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A slithaving a predetermined length is formed in a mirrorand an illumination light L of illumination partirradiates an observation area E in a manner of zero-angle illumination to an optical axis K. The illumination part is movable to form an oblique path of the illumination light L which passes through the slit. A shadow appears due to the oblique path of the illumination light L and it facilitates a stereoscopic observation.