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:
Nov. 26, 1991
Filed:
Mar. 03, 1989
Harold Mirels, Rolling Hills Estates, CA (US);
Donald J Spencer, Torrance, CA (US);
Robert Hofland, Jr, Torrance, CA (US);
The Aerospace Corporation, El Segundo, CA (US);
Abstract
This invention describes a method and an apparatus for refracting a laser beam. The beam can be collimated, focused, or expanded in passage through a series of in-line, orthogonally-mounted modules, each of which utilizes a fully-developed thermal boundary layer within a flow, between two cooled (or heated) parallel plates to produce beam refraction. The laser beam, in passage through this device, traverses only fully-developed thermal boundary layers which generate parabolic density and refractive index profiles, hence produce an undistorted gas lens. Two (three) diverger modules can be mounted in line to produce an emerging beam which is an undistorted, spherical-wave-front diverging (or collimated or focused) beam of elliptical (circular) cross section and the same beam quality as the input beam. This gas lens is usable at high beam power densities much above those that conventional optical materials can withstand. Counter flow may be used within each module to compensate for a streamwise index of refraction gradient, if necessary.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile