Projection apparatus

Details Projection apparatus Projection apparatus

2011-03-22

2011-03-22

Kumar, Srilakshmi K (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Optical means interposed in viewing path

C353S077000

Reexamination Certificate

active

07911411

ABSTRACT:
A projection apparatus for inexpensively adjusting the irradiating region of light on an image forming device to irradiate the light to the entire image forming surface of the image forming device is provided.The projector including a light tunnel for passing the light emitted from a lamp and changing the light to condensed uniform light, a mirror for reflecting the light passed through the light tunnel, a DMD for reflecting the light at an image forming surface irradiated with the light reflected by the mirror and forming an image, a lens for projecting the image formed with the DMD, and a frame for attaching these components of an image projection optical system; further includes a rotation adjustment fixing mechanism for fixing the light tunnel to the frame with the rotation angle having the axis of the light tunnel as substantially the center adjusted with an incident port of light of the light tunnel facing the lamp and an exit port facing the mirror.

REFERENCES:
patent: 2003/0053787 (2003-03-01), Lee
patent: 2004/0090598 (2004-05-01), Morinaga
patent: 2005/0140937 (2005-06-01), Kumai
patent: 2006/0028838 (2006-02-01), Imade
patent: 2000-155373 (2000-06-01), None
European Search Report for European Application No. 07005163.6-1240, dated Jul. 23, 2007 (6 pages).
Patent Abstracts of Japan for Publication No. 2000-155373, Publication date Jun. 6, 2000 (1 page).

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