Opto-electronic color sensor

Details Opto-electronic color sensor Opto-electronic color sensor

1982-09-30

1987-06-23

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

356 28, 356121, 356326, G01J 100, G01J 300

Patent

active

046748776

ABSTRACT:
An automatic digital light source adjustment procedure is disclosed wherein a computer calculates a correction factor for each of a plurality of light sources and adjusts the light sources such that each of the light sources meets an optimum performance criteria. In one embodiment, a multicolor cathode ray tube is converged automatically utilizing the present invention by sensing the profiles of the amplitudes of the individual color light intensities versus the same light source position relative to the sensor mechanism for each of the three primary colors, calculating the correction factor and inputting the correction factor to a digital memory, and then providing for the correction factor to be applied to the analog output of the beam control thereafter. Alternative embodiments enhance focus, purity, light line width, color composition, and other performance factors. The sensor, in one embodiment, senses the speed of the relative motion between the light and the sensor, as well as simultaneously sensing the amplitudes of the individual colors.

REFERENCES:
patent: 3171882 (1965-03-01), Baird

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