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:
Mar. 14, 2000
Filed:
Dec. 04, 1997
Takeo Sugawara, Hamamatsu, JP;
Hamamatsu Photonics K.K., Hamamatsu, JP;
Abstract
The fiberoptic block in accordance with the present invention has an input end face constituted by a combination of a plurality of surfaces each of which is inclined at a slant angle .alpha. by which disturbing light from within the air can be eliminated, whereby an irregularity image with a high contrast can be emitted as usual. Also, it has an output end face perpendicular to the axis of each unit fiber. Accordingly, when the output end face is butted against and secured to an input face of a photodetector, the irregularity image is made incident on the input face of the photodetector so as to be substantially perpendicular thereto, thus allowing a bright irregularity image to be attained. Further, since this fiberoptic block has a form extending from the output end face in a direction perpendicular thereto, it can be attached to the photodetector relatively easily with a high precision.