Color encoding video system with optical low pass filter

Details Color encoding video system with optical low pass filter Color encoding video system with optical low pass filter

1977-02-15

1978-07-18

Richardson, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 55, H04N 907

Patent

active

041019296

ABSTRACT:
A color encoding video system such as a single or double tube color television camera has an optical grating low pass filter positioned in a plane substantially adjacent the focal plane of the image pickup tube. A separate and interchangeable image forming objective optical system can be mounted on the body of the camera for focusing an object scene on the photosensitive element of the pickup tube. The filter grating pattern can be stripes or lenticular lenses and has a spatial frequency along the scanning direction limited to a value not greater than the highest spatial frequency available for detection of the luminous signals whereby optical imaging problems are prevented regardless of the aperture opening of the objective optical system.

REFERENCES:
patent: 3940788 (1976-02-01), Abe et al.

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