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. 24, 1987
Filed:
May. 22, 1984
Carl-Zeiss-Stiftung, Heidenheim on the Brenz, DE;
Abstract
For determining the proper dose of therapy radiation for photocoagulation at the fundus of the eye, the fluorescent radiation excited by the therapy radiation (laser light) in the fundus of the eye is utilized. The fluorescence intensity passes through a characteristic minimum upon the termination of the coagulation process. Apparatus is disclosed for the detection by measurement of this effect. Optical beam splitters are provided to separate the fluorescent radiation from the therapy radiation. An electronically controlled shutter is provided for the passage and blocking off of the therapy radiation. The shutter is closed when the fluorescence intensity reaches a minimum after commencement of coagulation, or when the radiation reaches a predetermined amount, if this occurs before the fluorescence reaches its minimum.