Sequential colour illumination system, method for producing a colour wheel for said system and a colour segment device

摘要

The invention relates to a sequential illumination system for a visual display unit comprising a light source emitting a polychromatic light beam towards said visual display unit within a wavelength range comprising at least three primary colours, and a colour wheel provided with at least three transmissive or reflective segments for transmitting said light beam along an optical path in such a way they successively cut the direction of propagation of said beam. The colour segments are distributed on the said wheel in such an order that the differences of energies perceived by the visual organ of a standard observer (visual stimuli), are as equivalent as possible during the intersegment transitions, when the segments pass along the optical path of the beam. Said invention can be used for movie projection and overhead projection devices.