Camera method and apparatus for recording with selected contrast

Details Camera method and apparatus for recording with selected contrast Camera method and apparatus for recording with selected contrast

1979-05-21

1981-06-09

Hix, L. T.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 38, 355 68, 355 71, 355 77, G03B 2752, G03B 2772

Patent

active

042721865

ABSTRACT:
The provision in front of the image surface of a photosensitive element of a device that selectively directs image light with increased intensity to microscopic, spaced-apart portions of the image surface yields a photograph or like record having a selectively decreased contrast. The photograph is viewed independently of its location relative to the light directing device. Changing the apparent aperture through which image light reaches the light-directing device can control the amount of contrast decrease. Further, selective filtering of a portion of the incident light separately controls the contrast of high-exposure portions of the image.

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Research Disclosure, 17533, Nov. 1978, Gilmour, "Optical Method for Curve Shape Control."

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