US 4,071,809 A · Apparatus for synthesizing of colors

Abstract

A synthesizer using the additive method of color synthesis and having a plurality of different color filters to provide corresponding primary color radiations which are combined to produce a tone having a specified color content. The filters are illuminated by either one or a plurality of gas discharge lamps equal in number to the number of color filters, the frequency and duration of the flashes from the lamp incident on each filter being determined by a control circuit to produce a predetermined luminous intensity for each primary color. The circuit may be programmed by specifying numerical values for the required luminous intensity of each primary color and the circuit adapted to control the frequency and duration of the flashes in accordance with the specified numerical values.

Claims11

Dependent claims

A colour synthesizer comprising:

a discharge lamp source;
a plurality of colour filters;
means mounting said filters relative to said source to produce radiation in each of a predetermined number of primary colours along a common path, said mounting means comprising:
a movable support carrying said plurality of colour filters;
means rotating said support to pass said colour filters in succession in front of said lamp;
a trigger circuit for said lamp;
and
a synchronization circuit responsive to the rotation of said support connected to said trigger circuit to control the discharge of said lamp;
and
means for varying the luminous intensity of said source thereby varying the luminous intensity of the primary colour radiation from said filters.

7 more elements

Dependencies are inferred from the claim text.

Apparatus for synthesizing of colors

Life of this patent

Apparatus for synthesizing of colors

Life of this patent

Abstract

Claims11