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Title:
OPTICAL SYNTHESIS APPARATUS, OPTICAL ENGINE, AND IMAGE PROJECTION DISPLAY UNIT
Document Type and Number:
Japanese Patent JP2009075228
Kind Code:
A
Abstract:

To easily remove color shift due to displacement after alignment adjustment adhesion or soldering of a liquid crystal display element, or due to change with time.

Provided is a means for minutely inclining an optical element of a liquid crystal display element (reflective light valve) or a polarized beam splitter with respect to the optical axis of a color synthesizing means (dichroic prism). In one embodiment, a liquid crystal display element 7 is mounted on a holder 6 of a movable member. A plurality (3 pieces) of screw parts 5a are provided in the holder 6. The holder 6 is supported rotatably on the alignment plate 1 by fitting an elastic member 2 into the screw parts 5a and inserting the screw parts 5a through a hole part provided in an alignment plate 1 and fastening the screw part with nut 5. The alignment plate 1 is fixed on a frame 8 via a pin 8a. Color shift is eliminated by minute change of inclination of the liquid crystal display element 7 according to fastening degree of the nut 5.


Inventors:
HAGITANI TOSHIMICHI
Application Number:
JP2007242413A
Publication Date:
April 09, 2009
Filing Date:
September 19, 2007
Export Citation:
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Assignee:
RICOH KK
International Classes:
G03B21/00; G02B27/28; G02F1/13; G02F1/1333
Attorney, Agent or Firm:
Makoto Suzuki
Kazuhito Oura