Compensating optical system for video monitor

Details Compensating optical system for video monitor Compensating optical system for video monitor

1993-06-16

1994-11-15

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

348 72, H01J 314

Patent

active

053650581

ABSTRACT:
There is disclosed a video system having a photodetector for sensing an optical pattern that is representative of a field of interest. The system incorporates a CCD photosensor having a pixel format adapted to a particular video convention, and further includes video electronics, a video output device such as a display, tape, or computer, which is adapted to a second video convention. The video output device introduces a distortion into the system in accordance with an incompatibility between the first video convention and the second video convention. To correct the distortion a cylindrical lens is disposed in the optical path extending from the photodetector to the field of interest, for varying at least one dimension of the optical pattern.

REFERENCES:
patent: 4884133 (1989-11-01), Kanno et al.
patent: 5166787 (1992-11-01), Irion

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