Light tunnel apparatus of an optical engine and projection...

Details Light tunnel apparatus of an optical engine and projection... Light tunnel apparatus of an optical engine and projection...

2007-05-15

2010-12-28

Lee, John R (Department: 2878)

Optics: image projectors

Housing

C385S134000, C359S831000

Reexamination Certificate

active

07857465

ABSTRACT:
A light tunnel apparatus of an optical engine and a projection system comprising the light tunnel apparatus are provided. The projection system comprises an optical engine which includes a body and a light tunnel apparatus. The light tunnel apparatus comprises a light tunnel, a housing, a frame, and a positioning device. The light tunnel has a central axis. The housing is connected to the body while the frame is connected to the housing, and the light tunnel is disposed in the frame. The positioning device, disposed between the frame and the housing, provides at least a thrust substantially perpendicular to the central axis, whereby the thrust allows the frame to be restricted to move along an axial direction substantially parallel to the central axis.

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patent: 2008/0080079 (2008-04-01), Lu
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