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US 4,707,093 AGranted
Method and device for illuminating the face plate of a color television tube for formation of the screen
AssigneeVideocolor
InventorPierluigi Testa
Life of this patent
Estimating the term…
Abstract
Device for illuminating photosensitive light hardenable material for the manufacture of a perforated mask type color cathode ray tube, wherein this device comprises a laser, a light modulator and a deflector to deflect the modulated pencil of light, the light modulator and the deflector being controlled by a computer so that the luminous intensity received by each point of the screen is substantially constant.
Claims13
A device for illuminating photosensitive light hardenable material for manufacturing the screen of a perforated mask type color cathode ray tube comprising;
- a luminous source emitting a pencil of light and a deflector for deviating this pencil of light so that it scans the screen in front of which is disposed the perforated mask which further includes a light modulator subjected to a pencil of light from said luminous source and controlled by a computer in order that the luminous intensity received by each point of the screen be substantially constant.
Dependencies are inferred from the claim text.