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Optical device and projector

  • US 8,118,437 B2
  • Filed: 09/10/2008
  • Issued: 02/21/2012
  • Est. Priority Date: 09/28/2007
  • Status: Active Grant
First Claim
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1. An optical device comprising:

  • a light source;

    a light modulation device that modulates a light beam emitted from the light source to an image light in accordance with image information;

    a projection optical device that magnifies and projects the image light; and

    a retention member configured to hold the light modulation device and the projection optical device, including;

    a projection optical device attachment section for attaching the projection optical device, anda light modulation device attachment section provided for attaching the light modulation device with a protrusion to a side opposite to the projection optical device along an optical-axis direction of the projection optical device,wherein;

    the projection optical device attachment section includes;

    a fixing section that fixes the projection optical device substantially at a position of the center of gravity;

    a support section that is disposed opposing the fixing section in the optical-axis direction, and supports the light modulation device attachment section such that the light modulation device attachment section is fixed to a side of the support section that is opposite the fixing section in the optical-axis direction; and

    a connection section that connects together the fixing section and the support section,the support section is formed with a concave section, andthe light modulation device attachment section is formed with a collar section,the collar section being fixed to at least two places of both sides of the concave portion by screw.

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