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:
Dec. 09, 1986
Filed:
May. 03, 1985
Applicant:
Inventor:
David A Dewey, Huntington Beach, CA (US);
Assignee:
CooperVision, Inc., Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ; A61B / ;
U.S. Cl.
CPC ...
362 32 ; 1283031 ; 128395 ;
Abstract
A variable spot size illuminator for projecting a variable size spot of light into an illumination plane comprises a source of light, fiberoptic image transmission means having an entrance surface and an exit surface, means for projecting a cone of said light onto said entrance surface, objective lens means for focusing light emerging from said exit surface into said illumination plane, and means for varying the distance between said entrance surface and the vertex of said cone of light. The variable spot size illuminator is useful for projecting a spot of variable size with constant beam convergence in a laser photocoagulator.