Illumination system

Patent metadata

Field	Value
Publication number	US-9904159-B2
Application number	US-201514609685-A
Country	US
Kind code	B2
Filing date	Jan 30, 2015
Priority date	Jul 4, 2014
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

An illumination system includes a first light source module and a first reflective mirror module. The first light source module includes plural first light sources for emitting plural first light beams, respectively. The first reflective mirror module includes at least one first reflective mirror, at least one first fixing structure, and at least one first adjusting mechanism. The first reflective mirror is located at a first optical axis of the plural first light sources. The at least one first fixing structure is used for fixing the first reflective mirror. The first adjusting mechanism is connected with the first fixing structure. By moving or rotating the first adjusting mechanism, a location and an angle of the first reflective mirror relative to the first optical axis are correspondingly changed, so that the first light beam is reflected by the first reflective mirror and guided along a specified optical path.

First claim

What is claimed is:

1. An illumination system for a projection device, the illumination system comprising:
a first light source module comprising plural first light sources for emitting plural first light beams, respectively;
a first reflective mirror module comprising:
at least one first reflective mirror located at a first optical axis of the plural first light sources;
at least one first fixing structure for fixing the first reflective mirror and comprises a first fixing hole; and
at least one first adjusting mechanism connected with the first fixing structure;

a second light source module opposed to the first light source module, and comprising plural second light sources for emitting plural second light beams, respectively; and
a second reflective mirror module comprising:
at least one second reflective mirror located at a second optical axis of the plural second light sources;
at least one second fixing structure for fixing the second reflective mirror and comprises a second fixing hole;
at least one second adjusting mechanism connected with the fixing structure; and
an auxiliary fixing element is penetrated through the first fixing hole of the first fixing structure and the second fixing hole of the second fixing structure for positioning the first fixing structure and the second fixing structure;

wherein by extracting the auxiliary fixing element from the first fixing hole and the second fixing hole, and moving or rotating the first adjusting mechanism and the second adjusting mechanism, a location and an angle of the first reflective mirror relative to the first optical axis are correspondingly changed, and a location and an angle of the second reflective mirror relative to the second optical axis are also correspondingly changed, so that the first light beam and the second light beam are reflected by the first reflective mirror and the second reflective mirror respectively, and guided along a specified optical path.

2. The illumination system according to claim 1 , further comprising a focusing element, wherein after the first light beam is reflected by the first reflective mirror and the second light beam is reflected by the second reflective mirror, the first light beam and the second light beam are guided to the focusing element.

3. The illumination system according to claim 1 , wherein each of the plural first light sources and the plural second light sources are arranged in a planar array of M rows and N columns.

4. The illumination system according to claim 3 , wherein the at least one first reflective mirror comprises M first reflective mirrors, and the M first reflective mirrors are in parallel with each other, wherein the at least one second reflective mirror comprises M second reflective mirrors, and the M second reflective mirrors are in parallel with each other.

5. The illumination system according to claim 4 , wherein the first reflective mirror comprises alternate transmissible zones and reflective zones, and the reflective zones of the first reflective mirror are aligned with the first optical axis, wherein the second reflective mirror comprises alternate transmissible zones and reflective zones, and the reflective zones of the second reflective mirror are aligned with the second optical axis.

6. The illumination system according to claim 3 , wherein the at least one first fixing structure comprises N first fixing structures, and the at least one second fixing structure comprises N second fixing structures, wherein the N first fixing structures and the N second fixing structures are staggered.

7. The illumination system according to claim 1 , wherein the first reflective mirror is fixed and clamped by the first fixing structure, wherein the second reflective mirror is fixed and clamped by the second fixing structure.

8. The illumination system according to claim 1 , further comprising a covering member, wherein the covering member comprises a carrier, a frame and a lateral plate, wherein the frame comprises an accommodation space for accommodating the carrier, the first reflective mirror module and the second reflective mirror module are supported by the carrier, and the lateral plate is disposed on the frame, wherein the lateral plate comprises plural perforations, and the first adjusting mechanism and the second adjusting mechanism are penetrated through the corresponding perforations and partially exposed to an outer surface of the lateral plate.

9. The illumination system according to claim 1 , wherein the first fixing structure is synchronously moved or rotated with the first adjusting mechanism, wherein the first adjusting mechanism comprises a first adjusting lever, the first fixing structure comprises a first pivotal hole, and the first adjusting lever is penetrated through the first pivotal hole to be moved or rotated, wherein the second fixing structure is synchronously moved or rotated with the second adjusting mechanism, wherein the second adjusting mechanism comprises a second adjusting lever, the second fixing structure comprises a second pivotal hole, and the second adjusting lever is penetrated through the second pivotal hole to be moved or rotated.

10. The illumination system according to claim 1 , further comprising a covering member, wherein the covering member comprises a lateral plate with plural perforations, wherein the first adjusting mechanism, the second adjusting mechanism and the auxiliary fixing element are penetrated through the corresponding perforations of the lateral plate and exposed to an outer surface of the lateral plate.

Assignees

• Delta Electronics Inc

Inventors

• Chen Ching Liang

Classifications

• G02B27/14

  operating by reflection only · CPC title

• G03B21/2046 Primary

  Positional adjustment of light sources · CPC title

• G03B21/2066

  Reflectors in illumination beam (in projection beam G03B21/28) · CPC title

• G03B21/2013

  Plural light sources · CPC title

• H04N9/3164

  using multiple light sources · CPC title