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:
Aug. 26, 1980
Filed:
Jul. 24, 1978
Naomiki Araki, Hachioji, JP;
Yasuo Inoue, Hachioji, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
An illuminating device for use in an ophthalmoscopic photographing apparatus comprising an objective lens system arranged near an eye to be inspected in a main optical viewing path, a photographing lens system arranged in the main optical path for imaging a light pattern reflected from the retina of the eye to be inspected on the surface of a film through the objective lens system, and a light guide arranged the main optical viewing path and an illuminating optical path. The light guide consists of a bundle of optical fibers one end portion of which is so constructed that a plurality of optical fibers uniformly enclose a light passing tube to form a concentric circle or partially enclose the light tube.