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:
Sep. 17, 1991
Filed:
Jun. 08, 1990
Applicant:
Inventor:
John J Hizny, North Billerica, MA (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
359652 ; 385 33 ;
Abstract
A monolithic optical device formed from a GRIN rod having a centered aperture at an exit end thereof is bonded to a laser exit face to couple laser radiation through a spatial aperture without the alignment sensitivity characteristic of the prior art by the sequence of fabrication and alignment steps, whereby the output beam from the spatial filter is essentially subject only to vignetting as a result of misalignment of the optic with respect to the laser beam, rather than to the distorted wavefront characteristic of such misalignment in the prior art.