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:
Apr. 20, 1982
Filed:
Apr. 21, 1980
Applicant:
Inventors:
Harumi Takeda, Tokyo, JP;
Kiichi Furuya, Tokyo, JP;
Susumu Takahashi, Tokyo, JP;
Hiroshi Tamaki, Tokyo, JP;
Assignee:
Tokyo Kogaku Kikai Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ; G02B / ;
U.S. Cl.
CPC ...
356375 ; 250227 ;
Abstract
Electro-optical distance measuring apparatus has a light emitting element for producing a modulated light which is projected through a condenser lens and an objective lens. Between the condenser and objective lenses, there is provided a light guide device which comprises a first optical fiber bundle adjacent to the objective lens and a second optical fiber bundle adjacent to the condenser lens. The first and second optical fiber bundles are in end-to-end relationship and the first bundle has a diameter smaller than that of the second bundle.