Light guide module and projection apparatus having the same
AssigneeDelta Electronics, Inc.
InventorJune-Jei HUANG
Life of this patent
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Abstract
A projection apparatus and a light guide module for use in the projection apparatus are provided. The projector apparatus comprises an illumination mechanism, at least one digital micromirror device (DMD), and a light guide module, wherein the light guide module includes a plurality of interfaces. The illumination mechanism provides a light beam which travels through the plurality of interfaces of the light guide module along a first axis without any rotation. The light beam orderly performs total internal reflections on each of the interfaces of the light guide module. Accordingly, the light beam travels to the at least one DMD, and then the light beam is reflected along a second axis.
Claims22
A light guide module for use in a projection apparatus, the projection apparatus comprising an illumination mechanism and a DMD (Digital Micromirror Device), the illumination mechanism being adapted to provide a light beam, the light beam traveling along a first axis to the DMD via the light guide module, and then the light beam being reflected along a second axis, the light guide module comprising:
- a plurality of interfaces, being adapted to enable the light beam to undergo a plurality of total internal reflections on each of the interfaces in turn, wherein the total internal reflections have a traveling direction parallel to a reference plane, and the first axis and the second axis are parallel to each other.
A projection apparatus, comprising:
- an illumination mechanism, being adapted to provide a light beam;
- at least one DMD (Digital Micromirror Device);
- and
- a light guide module, the light beam traveling along a first axis to the DMD via the light guide module, and then the light beam being reflected along a second axis, the light guide module comprising:
- a plurality of interfaces, being adapted to enable the light beam to undergo a plurality of total internal reflections on each of the interfaces in turn, wherein the total internal reflections having a traveling direction parallel to a reference plane, and the first axis and the second axis are parallel to each other.
Dependencies are inferred from the claim text.