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:
Apr. 12, 1988
Filed:
Oct. 14, 1986
Chikashi Koike, Hino, JP;
Stephan Pataki, Campbell, CA (US);
Kowa Company Ltd., Aichi, JP;
Coherent Incorporated, Palo Alto, CA (US);
Abstract
A laser coagulation system projects a slit image beam into an eyeball to determine a treatment point and selectively delivers argon and krypton laser beams thereto during an opthalmological operation. Observation equipment receives the slit image beam and laser beams reflected from the treatment point to observe the treatment point. A pair of discs are coaxially rotatably mounted around a shaft parallel to the optical axis between the treatment point and the observation equipment. The discs are selected according to the kind of laser beams and disposed on the optical axis to block the reflected laser beam during the irradiation thereof and to pass the reflected slit image beam during other than the irradiation of the laser beam. One disc has a filter for absorbing the argon laser beam and an opening for passing the slit image beam, both disposed along the periphery of the disc, and the other disc has another filter for absorbing the krypton laser beam and an opening for passing the slit image beam.