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:
Feb. 02, 1988
Filed:
Nov. 20, 1985
Applicant:
Inventors:
Akiyoshi Hamada, Toyokawa, JP;
Katsumi Miwa, Machida, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350-68 ; 350449 ;
Abstract
Disclosed is a recording apparatus having a semiconductor laser producing a laser beam with Gauss distribution and an aperture stop. The aperture stop has a diameter in the direction normal to a junction plane of the semiconductor laser which is adjustable to a suitable value and a diameter in the direction parallel to the junction plane is fixed at a predetermined value. This aperture stop transmits the beam in regulated form with minimum loss of energy propagation efficiency.