2- HIGH EFFICIENCY TWO-SLM PROJECTOR EMPLOYING TOTAL-INTERNAL-REFLECTION PRISM

摘要

A color wheel (color wheel) by a field having at least two light valves are illuminated with a different color from each other at the same time, the beam of the same polarization are provided in-the display is operated in a sequential color mode (field-sequential color mode) have been disclosed. The light valve is provided an image forming light to a projection lens for projecting the optical image formed on the screen. Wheels are spaced apart from each other and from each other and provided with a front and rear surface having different color segments, the segments are the front and rear collar when the different color of the segment is superimposed different color beam of the same time the polarized light (simultaneous different It is to separate the color beams). When the front and rear surfaces both parallel beam from the front and rear surfaces are parallel to each other. Or to meet the front and rear surfaces to form a wedge the direction of the two beams are different from each other. Front and rear collar segment are also offset from each other and each is provided with a transparent segment (clear segment) so that one of the color beams is provided in one of the light valves. Front and rear transparent segments are also offset from each other. Is the light valve at the same time the wheel to sequentially illuminated with different colors is rotated.