Projection system with a common light source sharing system

• US 7,344,254 B2
• Filed: 03/26/2004
• Issued: 03/18/2008
• Est. Priority Date: 03/28/2003
• Status: Expired due to Fees

• Current Assignee: Thomson Licensing (Vantiva SA)
• Original Assignee: Thomson Licensing (Vantiva SA)
• Inventors: Yoon, Youngshik
• Primary Examiner(s): BLACKMAN, ROCHELLE ANN J
• Application Number:
  US10/811,171
• Publication Number:
  US 20040263794A1
• Time in Patent Office: 1,453 Days
• Field of Search: 353/81, 353/82, 353/102, 353/20, 353/33, 362/551, 385/28, 385/34, 385/36, 385/49, 385/115, 385/133, 349/5, 349 7- 9, 349/96, 359/483, 359/487, 359/496, 359/497, 359/618, 359/621, 359/623, 359/629, 359/638, 359/640, 348/744
• US Class Current: 353/81
• CPC Class Codes: G03B 21/005 Projectors using an electronic spatial light modulator but not peculiar thereto

Abstract

A projection display with a common light source sharing system for improved illumination uniformity is described. The common light source is coupled through a light-dividing prism to multiple integrators. Each integrator is coupled to one or more imaging devices that project image tiles to form a larger composite tiled image.

Claims

1. A projection display, comprising:

an illumination source for producing light;

a light-dividing prism for receiving light from the illumination source and dividing the received light based on polarization control; and

a plurality of integrators, wherein the light received from the illumination source and divided by the light-dividing prism is provided to each of the plurality of integrators and wherein each of the plurality of integrators is a fiber integrator.

2. The projection display of claim 1 wherein each integrator is further coupled to one or more imaging devices.

3. The projection display of claim 1 wherein the light-dividing prism has one of a square shape and a rectangular shape.

4. A projection system having a projection display, comprising:

an illumination source for producing light;

a light-dividing prism for receiving light from the illumination source and dividing the received light based on polarization control; and

a plurality of integrators, wherein the light received from the illumination source and divided by the light-dividing prism is provided to each of the plurality of integrators and wherein each of the plurality of integrators is a fiber integrator.

5. The projection system of claim 4 wherein each integrator is further coupled to one or more imaging devices.

6. The projection system of claim 4 wherein the light-dividing prism has one of a square shape and a rectangular shape.