| 摘要 |
PROBLEM TO BE SOLVED: To provide a diffractive optical modulator that can acquire diffracted light capable of forming one pixel using at least one ribbon, thereby enabling the realization of a small-sized product. SOLUTION: The diffraction type optical modulator includes: a base member; a first reflective element configured to have a center portion that is spaced apart from the base member to provide space, made of transmissive material to pass incident light therethrough, configured to have a reflective surface that is disposed on part of the center portion, is oriented to the base member and reflects incident light, and supported by the base member; a second reflective element disposed between the first reflective element and the base member, and configured to have a reflective surface that is spaced apart from the first reflective element and reflects light passing through the first reflective element; and an actuating means for moving the center portion of the first reflective element with respect to the second reflective element, and changing intensity of diffracted light formed by beams of reflected light from the first reflective element and the second reflective element. COPYRIGHT: (C)2008,JPO&INPIT
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