Projection display system including a relay lens that...

Details Projection display system including a relay lens that... Projection display system including a relay lens that...

2006-04-25

2006-04-25

Koval, Melissa Jan (Department: 2851)

Optics: image projectors

Particular condenser

C353S030000

Reexamination Certificate

active

07033032

ABSTRACT:
A projection display system includes a reflection display device, an optical member for projecting an illumination beam toward the reflection display device from a direction inclined relative to a front surface direction of the reflection display device, an optical member for projecting an image beam projected from the reflection display device a onto a projection surface, and a relay lens disposed on a front surface side of the reflection display device. The relay lens corrects the illumination beam into a parallel beam that enters the reflection display device, and causes the image beam from the reflection display device to enter the optical member for projecting the image beam, and causes a part of the illumination beam that is surface reflected on a surface thereof facing the optical member to be reflected in a direction other than the direction in which the image beam is projected by the projection system optical member.

REFERENCES:
patent: 6464375 (2002-10-01), Wada et al.
patent: 2005/0180018 (2005-08-01), Yamanaka et al.
patent: 2003-149599 (2003-05-01), None

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