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. 30, 2004
Filed:
Nov. 01, 2000
Takanori Takeda, Tokyo, JP;
Kabushiki Kaisha TOPCON, Tokyo, JP;
Abstract
A fundus camera comprising TV relay lens unit ( ) and a body unit ( ) which is capable of mounting plurality of TV cameras ( ) and ( ) is provided. The body unit ( ) includes photographing optical system ( ) for photographing a fundus Fu to be observed. The TV relay lens unit ( ) is detachably mountable on the body unit ( ) and has a function to direct a fundus image forming luminous flux divided by the photographing optical system ( ) to respective TV camera according to light. The TV relay lens unit ( ) comprises a switching mirror ( ) and a reflecting optical element ( ) so as to adapt to TV cameras of a visible-fluorescent photographing/infrared-fluorescent photographing TV camera ( ) which has sensitivity for both visible light and infrared light, a color photographing TV camera ( ), which has sensitivity for visible light and a fundus observing TV camera ( ) which has sensitivity for infrared light. The switching mirror ( ) and the reflecting optical element ( ) selectively switches the optical path of fundus image forming luminous flux so as to direct it to respective TV camera according to light by instantaneous insertion or retraction operation.