Fiberoptic block for high contrast imaging

Details Fiberoptic block for high contrast imaging Fiberoptic block for high contrast imaging

1997-12-04

2000-03-14

Lee, John D.

Optical waveguides

Optical fiber bundle

Fiber bundle plate

385116, G02B 608

Patent

active

060383607

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.

REFERENCES:
patent: 3797910 (1974-03-01), Westwig
patent: 3906520 (1975-09-01), Phillips
patent: 4932776 (1990-06-01), Dowling, Jr. et al.
patent: 5426296 (1995-06-01), Shikai et al.
patent: 5448649 (1995-09-01), Chen et al.

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