Importance

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Abstract

An optical projection system comprises a non-point white light source, a source lens, a source stopper, an optical means including a first and a second dichroic mirrors, a first, a second and a third arrays of M.times.N actuated mirrors, a first, a second and a third field lenses, a projection stopper, a projection lens and a projection screen. Each of the field lenses is located between each of the dichroic mirrors and each of the arrays of actuated mirrors and is used for collimating each of the primary light beams onto the corresponding array of actuated mirrors and refocussing each of the reflected primary light beams from the arrays of actuated mirrors onto the optical means and eventually onto the projection stopper. The first dichroic mirror in the optical means comprises a first and a second portions, wherein the first portion is used for isolating and transmitting one of the primary light beams to the first array of actuated mirrors and reflecting the two remaining primary beams to the second dichroic mirror, and the second portion is used for reflecting and transmitting each of the primary beams reflected from each of the arrays of actuated mirrors.

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First Claim