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:
Jun. 27, 1989
Filed:
Feb. 24, 1986
Applicant:
Inventors:
Kimio Takahashi, Machida, JP;
Norihisa Saito, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350-68 ; 350-67 ; 350616 ; 350320 ;
Abstract
A rotary polygonal mirror has a base member with a portion of a polygonal cross-section constructed of such a relatively light-weight material as can easily be formed into a relatively complicated configuration. The polygonal portion includes a reflective mirror face formed on one or more sidewalls thereof. A method of making such rotary polygonal mirror includes the step of molding the base member with or without subjecting one or more sidewalls of the polygonal portion to a precision cutting to form a reflective mirror face thereon.