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. 21, 1992
Filed:
Dec. 21, 1989
Isao Minegishi, Tokyo, JP;
Masaru Isono, Matsudo, JP;
Fumio Ohtomo, Asaka, JP;
Akihiko Sekine, Tokyo, JP;
Kabushiki Kaisha Topcon, , JP;
Abstract
A scanning optical device having a light source for illuminating an examination object such as eyground of a humaneye, a scanning illumination system for scanning and illuminating the examination object with the light, and a light receiving system for guiding the light reflected from the examination object to a light-receiving section. The scanning optical device also has a synchronous signal generating optical system capable of directly guiding the light from the scanning illumination system to the light-receiving section without the intermediary of the examination object, and a synchronizing signal extraction device for separating a synchronizing signal exactly synchronous with the image signal from the signal derived from the light-receiving section.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile