×

Lighting apparatus and projection type display, and driving method therefor

  • US 8,684,541 B2
  • Filed: 07/21/2008
  • Issued: 04/01/2014
  • Est. Priority Date: 10/09/2001
  • Status: Active Grant
First Claim
Patent Images

1. A lighting apparatus used for lighting an optical modulation device in a projection type display, comprising:

  • a light source emitting light;

    a first fly-eye lens;

    a second fly-eye lens comprising a plurality of lenses which include a first lens and a second lens; and

    a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, the movable shading plate being arranged between the first fly-eye lens and the second fly-eye lens, whereinthe amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, andan area of the first lens that is shaded by the movable shading plate is different from an area of the second lens that is shaded by the movable shading plate.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×