Fiber-optically coupled video viewfinder

Details Fiber-optically coupled video viewfinder Fiber-optically coupled video viewfinder

1989-01-17

1990-10-16

Brown, Brian W.

Photocopying

Contact printing

Light boxes

355 1, 352171, 350 9625, G03B 1302

Patent

active

049639064

ABSTRACT:
A fiber optic video viewfinder for a motion picture camera. The conventional ground glass focusing screen of the camera is replaced by a fiber optic element that comprises a fused coherent bundle of optical filaments. A front face of the fiber optic element is located at the focal plane of the camera. A video imaging device such as a photodetector array is secured to the opposite face of the fiber optic element. An image presented at the front face of the fiber optic element is transmitted through the element to the video imaging device whose electrical outputs are converted into a video image. The fiber optic element may be tapered to provide image magnification or demagnification.

REFERENCES:
patent: 3068772 (1962-12-01), MacNeille
patent: 3143589 (1964-08-01), Brault et al.
patent: 3883883 (1975-05-01), Sano et al.
patent: 4017168 (1977-04-01), Brown
patent: 4541698 (1985-09-01), Lerner
patent: 4557572 (1985-12-01), Schickedanz
patent: 4634256 (1987-01-01), Berger
patent: 4772902 (1988-09-01), Inoue et al.

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