| 摘要 |
PROBLEM TO BE SOLVED: To provide an integrator device for a projector, which is adjusted so that emitted illuminating light may cover all the area of a DMD (Digital MIcromirror Device) equally by moving a light emitting end without changing a position of a light incident surface. SOLUTION: The integrator device 20 includes: a columnar prism 24 where a light incident surface 41 on which substantially condensed illuminating light is made incident and a light emitting surface from which the incident illuminating light is emitted after it is repeatedly totally reflected on an inner surface of the outer peripheral surface are formed; a supporting frame 32 which supports the columnar prism 24 and has a dovetail groove 31 formed in parallel with an optical axis 30; a reflection lens barrel 25 whose one aperture end is fit to the light emitting surface to be a light incident end and whose other aperture end is a light emitting end 47; a reflection lens barrel holder 34 which has a trapezoidal rail 33 fit to the dovetail groove 31 and supports the reflection lens barrel 25 so that it performs straight advance on the optical axis 30; and relay lenses 28 and 29 which irradiate an image display area of the DMD with the illuminating light emitted from the reflection lens barrel 25 equally. COPYRIGHT: (C)2011,JPO&INPIT
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