PROJECTOR

• US 20090147159A1
• Filed: 12/06/2007
• Published: 06/11/2009
• Est. Priority Date: 12/06/2007
• Status: Abandoned Application

• Current Assignee: Young Optics, Inc. (Coretronic Corporation)
• Original Assignee: Young Optics, Inc. (Coretronic Corporation)
• Inventors: Chen, S-Wei
• Application Number:
  US11/951,377
• Publication Number:
  US 20090147159A1
• Time in Patent Office: Days
• US Class Current: 349/8
• CPC Class Codes: H04N 9/3108 by using a single electronic spatial light modulator
• CPC Class Codes: H04N 9/3161 using laser light sources using laser beams scanning the display screen H04N9/3129

Abstract

A projector includes a plurality of light sources, a liquid crystal display panel, a field lens and a flat mirror. The light sources provide color light beams. The liquid crystal display panel is capable of full color display. The field lens is disposed between the light sources and the liquid crystal display panel. The flat mirror is disposed between the light sources and the field lens. The light beams are reflected by the flat mirror to the field lens, and then pass through the field lens and change in different directions, entering the liquid crystal display panel with different incident angles. The projector further includes a curved mirror. The curved mirror replaces the field lens and the flat mirror. The light beams are reflected by the curved mirror and change in different direction, entering the liquid crystal display panel with different incident angles.

Claims

1. A projector, comprising:

a plurality of light sources providing color light beams;

a liquid crystal display panel capable of full color display; and

a field lens disposed between the light sources and the liquid crystal display panel;

wherein the light beams pass through the field lens to change the directions thereof into be different each other and then enter the liquid crystal display panel with different incident angles.

2. The projector as claimed in claim 1, further comprising an optical assembly disposed between the light sources and the field lens, wherein the light beams pass through the optical assembly before passing through the field lens.

3. The projector as claimed in claim 2, wherein the optical assembly comprises an integrator, a despeckler and a condensing lens.

4. The projector as claimed in claim 3, wherein the integrator is a rod or a fly-eye lens array.

5. The projector as claimed in claim 2, further comprising a flat mirror disposed between the optical assembly and the field lens, wherein the light beams, provided in parallel, are reflected by the flat mirror to the field lens.

6. The projector as claimed in claim 1, wherein the light sources comprises a blue laser, a green laser and a red laser.

7. The projector as claimed in claim 1, further comprising a projection lens disposed next to the liquid crystal display panel, wherein the light beams are modulated into image beams by the liquid crystal display panel, and the image beams are projected on a screen through the projection lens.

8. The projector as claimed in claim 1, further comprising a flat mirror disposed between the light sources and the field lens, wherein the light beams provided in parallel are reflected by the flat mirror to the field lens.

9. The projector as claimed in claim 1, wherein the field lens is disposed adjacent to the liquid crystal display panel.

10. A projector, comprising:

a plurality of light sources providing color light beams;

a liquid crystal display panel capable of full color display; and

a curved mirror disposed between the light sources and the liquid crystal display panel;

wherein the light beams are reflected by the curved mirror to change the directions thereof into be different each other and then enter the liquid crystal display panel with different incident angles.

11. The projector as claimed in claim 10, further comprising an optical assembly disposed between the light sources and the curved mirror, wherein the light beams pass through the optical assembly and the curved mirror in sequence.

12. The projector as claimed in claim 10, wherein the optical assembly comprises an integrator, a despeckler and a condensing lens.

13. The projector as claimed in claim 12, wherein the integrator is a rod or a fly-eye lens array.

14. The projector as claimed in claim 10, wherein the light sources comprises a blue laser, a green laser and a red laser.

15. The projector as claimed in claim 10, further comprising a projection lens disposed next to the liquid crystal display panel, wherein the light beams are modulated into image beams by the liquid crystal display panel, and the image beams are projected on a screen through the projection lens.

16. The projector as claimed in claim 10, wherein the light beams provided by the light sources are parallel to each other.