PROJECTION APPARATUS

• US 20140211171A1
• Filed: 12/30/2013
• Published: 07/31/2014
• Est. Priority Date: 01/29/2013
• Status: Active Grant

• Current Assignee: Young Optics, Inc.
• Original Assignee: Young Optics, Inc.
• Inventors: Chen, Chao-Shun, Pan, Haw-Woei, Huang, Wei-Hao
• Granted Patent: US 9,229,309 B2
• Time in Patent Office: Days
• US Class Current: 353/34
• CPC Class Codes: G02B 27/1066 for enhancing image performance, like resolution, pixel numbers, dual magnifications or dynamic range, by tiling, slicing or overlapping fields of view
• CPC Class Codes: G03B 21/14 Details
• CPC Class Codes: G03B 21/26 Projecting separately subsidiary matter simultaneously with main image
• CPC Class Codes: G03B 21/28 Reflectors in projection beam in illumination beam G03B21/2066
• CPC Class Codes: G03B 37/04 with cameras or projectors providing touching or overlapping fields of view
• CPC Class Codes: H04N 9/3105 for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators simultaneous projection in colour photography G03B33/10; beam splitting or combining systems per se G02B27/10
• CPC Class Codes: H04N 9/3197 using light modulating optical valves

Abstract

The invention provides a projection apparatus having an image source, a projection lens, and a beam-splitting module. The image source provides an image beam, and the image beam includes a first sub image beam and at least one second sub image beam. The projection lens is disposed on a transmission path of the image beam.

The beam-splitting module projects the first sub image beam passing through the beam-splitting module onto a first imaging plane, and projects the second sub image beam reflected by the beam-splitting module onto at least one second imaging plane. The first imaging plane is not coplanar with the at least one second imaging plane. The projection lens is disposed on the transmission path of the image beam between the beam-splitting module and the image source.

Claims

1. A projection apparatus, comprising:

an image source for providing an image beam, wherein the image beam comprises a first sub image beam and at least one second sub image beam;

a projection lens disposed on a transmission path of the image beam; and

a beam-splitting module for projecting the first sub image beam passing through the beam-splitting module onto a first imaging plane and projecting the second sub image beam reflected by the beam-splitting module onto at least one second imaging plane, wherein the first imaging plane is not coplanar with the at least one second imaging plane, and the projection lens is disposed on the transmission path of the image beam between the beam-splitting module and the image source.

2. The projection apparatus of claim 1, wherein the first imaging plane comprises a curved plane or a flat plane.

3. The projection apparatus of claim 1, wherein the second imaging plane comprises a curved plane or a flat plane.

4. The projection apparatus of claim 1 further comprising a first lens group, wherein the first lens group is disposed on a transmission path of the first sub image beam and is located between the projection lens and the first imaging plane.

5. The projection apparatus of claim 1, wherein the beam-splitting module comprises at least one reflector disposed on a transmission path of the second sub image beam for altering a transmission direction of the second sub image beam.

6. The projection apparatus of claim 1, wherein the beam-splitting module comprises:

at least one reflector disposed on a transmission path of the second sub image beam for altering a transmission direction of the second sub image beam; and

at least one second lens group disposed on the transmission path of the second sub image beam.

7. The projection apparatus of claim 1, wherein the first imaging plane and the second imaging plane are adjacent to each other.

8. The projection apparatus of claim 1, wherein the first imaging plane and the second imaging plane are separated from each other.

9. The projection apparatus of claim 1, wherein the beam-splitting module is a movable beam-splitting module.

10. The projection apparatus of claim 1, wherein the image source comprises:

an illumination system configured for providing an illumination beam; and

a display plane disposed on a transmission path of the illumination beam, and located between the projection lens and the illumination system, wherein the first sub image beam is corresponded to an image displayed by a region on a portion of the display plane, and the second sub image beam is corresponded to an image displayed by a region on another portion of the display plane.