Diffuser with Light Condensing Function

• US 20090207497A1
• Filed: 02/16/2009
• Published: 08/20/2009
• Est. Priority Date: 02/14/2008
• Status: Abandoned Application

• Current Assignee: Optivision Technology INC.
• Original Assignee: Optivision Technology INC.
• Inventors: LIU, Wen-Hao, YUAN, Kuang-Lin, LOR, Whey-Bin
• Application Number:
  US12/371,751
• Publication Number:
  US 20090207497A1
• Time in Patent Office: Days
• US Class Current: 359/599
• CPC Class Codes: G02B 5/0221 the surface having an irregular structure G02B5/0226 takes precedence
• CPC Class Codes: G02B 5/0231 the surface having microprismatic or micropyramidal shape macroscopic prism arrays G02B5/045
• CPC Class Codes: G02B 5/0278 used in transmission
• CPC Class Codes: G02B 5/045 Prism arrays

Abstract

One face of a substrate of a diffuser with a light condensing function is disposed with a plurality of prism rods; at least one inclined face of parts of prism rods is disposed with a rough diffusion face; the diffusion face may be positioned on any position of the inclined face of the prism rod; the diffusion face is disposed with a plurality of irregularly arranged raised and indented stripes perpendicular, not perpendicular or parallel to a crest line of the prism rod; chromatic dispersion can be reduced and stripes of the prism rods can be atomized effectively by utilizing the diffusion face to eliminate the occurrence of moiré fringes and elevate the yield factor.

Claims

1. A diffuser with a light condensing function, comprising a substrate and a plurality of longitudinally arranged long strip-typed prism rods;

one surface of said substrate being disposed with said plurality of prism rods;

each said prism rod being provided with a crest line, a first inclined face and a second inclined face;

said crest line being positioned at the highest position of said prism rod;

said first inclined face and said second inclined face being respectively extended from two sides of said crest line to said substrate;

at least one inclined face of said first inclined face and said second inclined face of each of parts of said prism rods being disposed with a diffusion face;

said diffusion face is disposed with a plurality of irregularly arranged raised and indented stripes.

2. The diffuser with a light condensing function according to claim 1, wherein a width of said diffusion face is a value between 2% and 90% of a width of said inclined face.

3. The diffuser with a light condensing function according to claim 1, wherein said plurality of raised and indented stripes are perpendicular to said crest line.

4. The diffuser with a light condensing function according to claim 1, wherein said plurality of raised and indented stripes are parallel to said crest line.

5. The diffuser with a light condensing function according to claim 2, wherein said plurality of raised and indented stripes are perpendicular to said crest line.

6. The diffuser with a light condensing function according to claim 2, wherein said plurality of raised and indented stripes are parallel to said crest line.

7. The diffuser with a light condensing function according to claim 5, wherein said diffusion face is close to said substrate.

8. The diffuser with a light condensing function according to claim 5, wherein said diffusion face is close to said crest line.

9. The diffuser with a light condensing function according to claim 6, wherein said diffusion face is close to said substrate.

10. The diffuser with a light condensing function according to claim 6, wherein said diffusion face is close to said crest line.

11. The diffuser with a light condensing function according to any one of claims 1, wherein a width of said diffusion face is randomly varied.

12. The diffuser with a light condensing function according to any one of claims 7, wherein a width of said diffusion face is randomly varied.

13. The diffuser with a light condensing function according to any one of claims 8, wherein a width of said diffusion face is randomly varied.

14. The diffuser with a light condensing function according to any one of claims 9, wherein a width of said diffusion face is randomly varied.

15. The diffuser with a light condensing function according to any one of claims 10, wherein a width of said diffusion face is randomly varied.

16. The diffuser with a light condensing function according to any one of claims 1, wherein a width of said diffusion face is regularly varied.

17. The diffuser with a light condensing function according to any one of claims 7, wherein a width of said diffusion face is regularly varied.

18. The diffuser with a light condensing function according to any one of claims 8, wherein a width of said diffusion face is regularly varied.

19. The diffuser with a light condensing function according to any one of claims 9, wherein a width of said diffusion face is regularly varied.

20. The diffuser with a light condensing function according to any one of claims 10, wherein a width of said diffusion face is regularly varied.