Monochrome cathode ray tube for use as a color reference

Details Monochrome cathode ray tube for use as a color reference Monochrome cathode ray tube for use as a color reference

1986-03-14

1988-09-13

Dees, Jose G.

Radiation imagery chemistry: process, composition, or product th

Producing cathode-ray tube or element thereof

Using specific control or specific modification of exposure,...

430 25, 430 26, 313470, 427 68, G03C 500

Patent

active

047709626

ABSTRACT:
By adjusting the exposure dosages for the three primary color phosphors in the photolithographic process used to produce color CRTs for color television, standard whites of desired color temperatures are obtained. The aperture mask used in the photolithographic process is then discarded, and the CRT is operated as a monochrome tube in a standard receiver. Stable, rugged and portable color references are thus produced.

REFERENCES:
patent: 3890151 (1975-06-01), Suzuki et al.
patent: 4070596 (1978-01-01), Tsuneta et al.

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