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:
Apr. 16, 1991
Filed:
May. 24, 1990
Koji Yoshifusa, Higashihiroshima, JP;
Taizo Yokota, Higashihiroshima, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The present invention presents a beam converting apparatus which comprises a semiconductor laser element, means for converting the laser beam from the semiconductor laser element into a parallel beam, and a prism possessing a first plane for receiving the parallel beam and a second plane for fully reflecting so that the beam entering from the first plane may be emitted from the first plane, wherein the apex angle of the first plane and second plane is defined so that the sum of the incidence angle (.theta.1) to the normal of the first plane and the exit angle (.theta.2) to the normal of the first plane of the beam fully reflected from the second plane emitted from the first plane, (.theta.1+.theta.2), may be about 90 degrees.