BIDIRECTIONAL PROJECTOR

• US 20120206697A1
• Filed: 07/12/2011
• Published: 08/16/2012
• Est. Priority Date: 02/15/2011
• Status: Active Grant

• Current Assignee: Asia Optical International Limited (Asia Optical Company Incorporated)
• Original Assignee: Asia Optical Company Incorporated
• Inventors: Lee, Chun-Yen
• Granted Patent: US 8,585,217 B2
• Time in Patent Office: Days
• US Class Current: 353/82
• CPC Class Codes: G03B 21/14 Details
• CPC Class Codes: G03B 21/28 Reflectors in projection beam in illumination beam G03B21/2066
• CPC Class Codes: H04N 9/3141 Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14

Abstract

A bidirectional projector, which may project slides onto two screens at the same time, includes a light source emitting red beam, green beam, and blue beam; at least an imaging device receiving the red beam, the green beam, and the blue beam from the light source and reflecting predetermined parts of the red beam, the green beam, and the blue beam to form an image beam according to image signals; and an optical lens, wherein the image beam emits to the optical lens and a part of the image beam passes through the optical lens to form a first projecting beam, and a part of the image beam is reflected by the optical lens to form a second projecting beam.

Claims

1. A bidirectional projector, comprising:

a light source emitting red beam, green beam, and blue beam;

at least an imaging device receiving the red beam, the green beam, and the blue beam from the light source and reflecting predetermined parts of the red beam, the green beam, and the blue beam to form an image beam according to image signals; and

an optical lens, wherein the image beam emits to the optical lens and a part of the image beam passes through the optical lens to form a first projecting beam, and a part of the image beam is reflected by the optical lens to form a second projecting beam.

2. The bidirectional projector as defined in claim 1, wherein an incidence angle of the image beam emitting to the optical lens is between 0 and 90 degrees.

3. The bidirectional projector as defined in claim 1, further comprising a first image lens, wherein the first projecting beam emits to the first image lens, and the first image lens images the first projecting beam onto a first imaging member.

4. The bidirectional projector as defined in claim 3, further comprising a second image lens, wherein the second projecting beam emits to the second image lens, and the second image lens images the second projecting beam onto a second imaging member.

5. The bidirectional projector as defined in claim 4, further comprising a reflector to reflect the second projecting beam to the second image lens.

6. The bidirectional projector as defined in claim 1, further comprising a first image lens between the image device and the optical lens, wherein the first projecting beam emits to the first image lens, and the first image lens images the first projecting beam onto a first imaging member.

7. The bidirectional projector as defined in claim 6, further comprising a second image lens, wherein the second projecting beam emits to the second image lens, and the second image lens images the second projecting beam onto a second imaging member.

8. The bidirectional projector as defined in claim 7, further comprising a reflector to reflect the second projecting beam to the second image lens.