IMAGE PICKUP OPTICAL SYSTEM AND LIGHT QUANTITY CONTROLLER USING INTERFEROMETRIC MODULATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a shutter device and a color separating device which use an interferometric modulation(IMOD) device.;SOLUTION: A light beam which is made incident on the IMOD device 7 through an optical system is separated at high speed into reflected light beams (red, green, and blue) of particular wavelengths by driving the reflector of the IMOD device 7. The IMOD device 7 may be formed of a single pixel or constituted into a panel composed of pixels. The light intensity from the IMOD device 7 is put into a storage device 13 such as a frame memory. Once one set of red, green, and blue beams is taken in, the three colors are mixed. The IMOD device 7 and storage device 13 are synchronized with each other. By this method, the same effects as a three-plate system can be obtained although the constitution is of a single-plate type. This elements are more small-sized and lightweight than a cross dischroic prism which is used normally as the three-plate type.;COPYRIGHT: (C)2002,JPO