Light-uniforming anti-glaring structure and light-emitting device

• US 9,063,270 B2
• Filed: 09/21/2011
• Issued: 06/23/2015
• Est. Priority Date: 12/22/2010
• Status: Active Grant

• Current Assignee: Polyfilm Optronics Corporation
• Original Assignee: Extend Optronics Corp.
• Inventors: Chang, Jen-Huai, Lin, Chao-Ying
• Primary Examiner(s): Husar, Stephen F
• Assistant Examiner(s): ALLEN, DANIELLE NICOLE
• Application Number:
  US13/239,385
• Publication Number:
  US 20120162960A1
• Time in Patent Office: 1,371 Days
• Field of Search: 362/97.1, 362/19, 362/514, 362/512, 362/319, 362/18, 362/310, 362/324, 362/523, 359/483.1, 427/162, 427/163.1, 349/96, 332/86, 126/600, 343/763, 343/766, 343/839, 356/491, 372/9
• US Class Current: 1/1
• CPC Class Codes: F21S 6/002 Table lamps, e.g. for ambient lighting
• CPC Class Codes: F21V 9/14 for producing polarised light
• CPC Class Codes: F21Y 2101/00 Point-like light sources
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: F21Y 2115/15 Organic light-emitting diodes [OLED]
• CPC Class Codes: F21Y 2115/30 Semiconductor lasers
• CPC Class Codes: G02B 5/0242 by means of dispersed particles

Abstract

A light-uniforming anti-glaring structure includes a light-polarizing reflection unit and a light-polarizing position adjusting unit. The light-polarizing reflection unit includes a multilayer reflector composed of a plurality of inter-stacked polymer films. One of the inter-stacked polymer films is a birefringence material layer that conforms to the condition of NX≠NY≠NZ, wherein NX is the index of refraction of light at X direction, NY is the index of refraction of light at Y direction, and NZ is the index of refraction of light at Z direction. The light-polarizing position adjusting unit is coupled with the light-polarizing reflection unit for adjusting the position of the light-polarizing reflection unit.

Claims

1. A light-uniforming anti-glaring structure, comprising:

a light-polarizing reflection unit including at least one multilayer reflector composed of a plurality of inter-stacked polymer films, wherein at least one layer of the inter-stacked polymer films is a birefringence material layer that conforms to the condition of NX≠

NY≠

NZ, wherein NX is the index of refraction of light at X direction, NY is the index of refraction of light at Y direction, and NZ is the index of refraction of light at Z direction; and

a light-polarizing position adjusting unit coupled to the light-polarizing reflection unit for adjusting the position of the light-polarizing reflection unit;

wherein the light-polarizing position adjusting unit includes a position adjusting ring surrounding the multilayer reflector for driving the multilayer reflector to rotate in 360 degrees, or for driving the multilayer reflector to flip-flop clock-wise or counter-clock-wise.

2. The light-uniforming anti-glaring structure according to claim 1, wherein the multilayer reflector has a surface structure from on at least one surface thereof, and the surface structure is mixed with a plurality of diffusion particles.

3. The light-uniforming anti-glaring structure according to claim 1, wherein at least one surface of the multilayer reflector has a diffusion membrane or an amplification membrane, and the diffusion membrane or the amplification membrane is mixed with a plurality of diffusion particles.

4. The light-uniforming anti-glaring structure according to claim 1, wherein at least one layer of the inter-stacked polymer films is a ultra-violet reflector for reflecting ultra-violet lights.

5. The light-uniforming anti-glaring structure according to claim 1, wherein the multilayer reflector is formed through single-axial or bi-axial stretching, so that the average transmittance rate of the multilayer reflector for light spectrum 380 nm˜

780 nm is selectively between 30% and 90%.

6. The light-uniforming anti-glaring structure according to claim 1, wherein the multilayer reflector is formed through bi-axial stretching, so that the multilayer reflector is selectively polarized or non-polarized.

7. The light-uniforming anti-glaring structure according to claim 1, wherein at least one surface of the multilayer reflector forms a micro structure layer.

8. The light-uniforming anti-glaring structure according to claim 7, wherein the microstructure layer is a self-cleansing layer or a photo-catalyst layer.

9. The light-uniforming anti-glaring structure according to claim 7, wherein the micro structure layer is prism shaped, pyramid shaped, hemisphere shaped, aspheric shaped, Frensel lens shaped, or grating structured, or a combination thereof.

10. The light-uniforming anti-glaring structure according to claim 1, further comprising:

a light-polarizing absorption unit includes at least a light- polarizing absorption strip that mutually laminates with the light-polarizing reflection unit, wherein the surface of the light-polarizing absorption strip has a diffusion membrane or an amplification membrane, and the diffusion membrane or the amplification membrane is mixed with a plurality of diffusion particles.

11. The light-uniforming anti-glaring structure according to claim 10, wherein the multilayer reflector is fixedly connected with the position adjusting ring.

12. A light emitting device, comprising:

a light emitting unit;

a reflection unit located at one side of the light emitting unit, so as to reflect light beams produced by the light emitting unit;

a light-polarizing reflection unit located at the other side of the light emitting unit, so as to receive or reflect the light beams from the light emitting unit, wherein the light-polarizing reflection unit comprises at least one multilayer reflector composed of a plurality of inter-stacked polymer films, wherein at least one layer of the inter-stacked polymer films is a birefringence material layer that conforms to the condition of NX≠

NY ≠

NZ, wherein NX is the index of refraction of light at X direction, NY is the index of refraction of light at Y direction, and NZ is the index of refraction of light at Z direction; and

a light-polarizing position adjusting unit, coupled to the light-polarizing reflection unit for adjusting the position of the light-polarizing reflection unit;

wherein the light-polarizing position adjusting unit includes a position adjusting ring surrounding the multilayer reflector for driving the multilayer reflector to rotate in 360 degrees, or for driving the multilayer reflector to flip-flop clock-wise or counter-clock-wise.

13. The light emitting device according to claim 12, wherein the light emitting unit is a cold-cathode fluorescent lamp, a light-emitting diode, an organic electroluminescent device, a laser device, a photoluminescence emission device, an external electrode fluorescent lamp, a flat fluorescent lamp, a carbon nanotubes field emission luminescent device, a halogen lamp, an xenon lamp, or a high pressure mercury lamp.

14. The light emitting device according to claim 12, wherein the light emitting unit comprises at least a light guiding unit facing the light-polarizing reflection unit and a light emitting element located at one side of the light guiding unit.

15. The light emitting device according to claim 12, further comprising a light-polarizing absorption unit includes at least a light-polarizing absorption strip that mutually laminates with the light-polarizing reflection unit.

16. The light emitting device according to claim 12, wherein the surface of the light-polarizing reflection unit is located with a microstructure layer.

17. The light emitting device according to claim 16, wherein the microstructure layer includes a self-cleansing layer or a photo-catalyst layer.

18. The light emitting device according to claim 16, wherein the micro structure layer is prism shaped, pyramid shaped, hemisphere shaped, aspheric shaped, Frensel lens shaped, or grating structured, or a combination thereof.

19. The light emitting device according to claim 12, wherein the multilayer reflector is fixedly connected with the position adjusting ring.

20. A light-uniforming anti-glaring structure, comprising:

a multilayer reflector composed of a plurality of inter-stacked polymer films, wherein at least one of the inter-stacked polymer films is a birefringence material layer that conforms to the condition of NX≠

Ny≠

NZ, wherein NX is the index of refraction of light at X direction, NY is the index of refraction of light at Y direction, and NZ is the index of refraction of light at Z direction; and

a position adjusting ring coupled to the multilayer reflector for driving the multilayer reflector to rotate in 360 degrees, wherein the multilayer reflector is divided into a plurality of reflector strips surrounded by the position adjusting ring, and each of the reflector strips is flip-flopped relative to the position adjusting ring.

21. The light-uniforming anti-glaring structure according to claim 20, further comprising:

a plurality of rotational axles respectively passing through the reflector strips.