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. 27, 1987
Filed:
Nov. 09, 1983
Yoshiharu Kuwabara, Kanagawa, JP;
Hiroyoshi Hamada, Kanagawa, JP;
Mitutoyo Mfg. Co., Ltd., Tokyo, JP;
Abstract
In an optical measuring device including: a parallel scanning ray beam generator having a rotary mirror for reflecting incident ray beams from a beam generator and converting the same into rotary scanning ray beams and a collimator lens for converting the rotary scanning ray beams into parallel scanning ray beams; and a light receiving element for detecting bright and dark portions of the parallel scanning ray beams which have passed through the workpiece to be measured; whereby a dimension in the scanning direction of the workpiece to be measured is sought from a length of time of a dark portion or a bright portion generated due to the obstruction of part of the parallel scanning ray beams by the workpiece to be measured which is interposed between the parallel scanning ray beam generator and the light receiving element, the incident optical axis of ray beams directly or indirectly emitted from the beam generator to the rotary mirror and an optical axis of the collimator lens for converting the rotary scanning ray beams formed by the aforesaid ray beams and reflected by the rotary mirror into the parallel scanning ray beams cross from directions opposite to each other and at equal angles with respect to a rotary plane perpendicular to a rotary center axis of the rotary mirror.