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. 05, 1999
Filed:
Mar. 31, 1997
Mitutoyo Corporation, Kawasaki, JP;
Abstract
In an optical gauge according to the invention, a mirror holder ring 21 is fitted to the outer periphery of the objective lens 12 and an light path bending mirror 22 is rotatably secured at the upper end thereof to the mirror holder ring 21. With such an arrangement, the light downwardly emitted from an optical system 3 irradiates the top plane of an object of measurement when the light path bending mirror 22 is held in parallel with the optical axis of the optical system 3. On the other hand, the light emitted from the optical system 3 is rectangularly turned to irradiate a lateral plane of the object of measurement when the light path bending mirror 22 is turned around its upper end to a position where it is inclined by 45.degree. relative to the optical axis of the optical system 3. Thus, an optical gauge according to the invention can observe one or more than one lateral sides of the object of measurement for dimensional measurement without modifying its attitude.