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. 25, 1978
Filed:
Oct. 21, 1976
Mamoru Hayamizu, Tokyo, JP;
Yasushi Tanigaki, Tokyo, JP;
Abstract
A beam of light from a light source is reflected by a polyhedron mirror which is continuously rotating around its axis. The reflected beam sweeps on an object and passes a predetermined point of the object surface. A dispersed light from the point is formed into a beam through a set of slits and reaches into a light detector. The polyhedron mirror has a plurality of mirror surfaces each of which is spaced at an independent distance from the rotary axis thereof. The distance between the predetermined point of the object and the beam line from the light source is computed by using the distances of the mirror surfaces from the rotary axis of the polyhedron mirror and the inclination angles of the mirror surfaces from the beam line, at which angles the reflected beam hits the predetermined point.