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:
Dec. 19, 1990
Applicant:
Inventors:
Hubert van den Bergh, Goumoens-la-Ville, CH;
Peter F Cornaz, deceased, late of Vevey, CH;
Max M Cornaz, heir, Chesalles, CH;
Jean-Pierre Cornaz, heir, Pratteln, CH;
Maria I Cornaz, heir, Berne, CH;
Georges Wagnieres, Lutry, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912173 ; 21912175 ;
Abstract
An apparatus for precise, homogeneous and sharp-edged irradiation of a large area with the light of a laser beam (5), which can be used especially for large-area photodynamic therapy, is provided with a multimode fibre (10), which is illuminated by the laser beam by way of a microscope objective (4) and has a length of approximately 5 meters, and the end face (13) of which is imaged onto an irradiated area (7) of a working surface (6) by means of a microscope (17).