Light-sensitive control for colored light projector

A device for producing variable colors from projected white light comprising (1) an adjustable color filter having four contiguous primary-color areas, (2) a shutter mechanism consisting essentially of a plate having an aperture therein for passing the projected light therethrough and three individually controllable shutters, each movable over a portion of the aperture, said filter positioned near and aligned with the aperture in a manner such that the projected white light controllable by one shutter is not transmittable through said filter and the projected white light controllable by the remaining two shutters is incident on any two contiguous color areas, and (3) measurement and control means comprising (a) a light-measuring unit for measuring transmitted light and generating an electrical signal proportional to the amount of light measured, (b) means electrically connected to the light-measuring unit which measures said electrical signal and determines the quantity of each transmitted component of the light present and (c) a servo mechanism responsive to (b) for controlling each of the three shutters.

A multiple projection color simulator comprising:

• at least two devices for producing variable colors from projected white light, each device comprising (a) a white light source, (b) an adjustable color filter having at least two primary-color areas, (c) a shutter mechanism consisting essentially of a plate having an aperture therein for passing the white light therethrough and three individually controllable shutters, each movable over a portion of the aperture, said filter positioned near and aligned with the aperture in a manner such that a portion of the white light passable through the aperture is not transmittable through said filter and is controllable by one shutter and the remaining white light passable through the aperture is incident on two of the primary-color areas and the remaining two shutters control the quantity of light transmittable from said two areas, and (d) a transparency of a design positioned to receive and transmit the light transmitted by the shutter mechanism and filter and masked so as to image a portion of the design in the color of the transmitted light, the transparency of each device being of a common design with a different portion masked, and arranged to image the portion of the design transmitted by the mask of each device in registration at a common plane.