CN202361277U - Light source module having a plurality of optical sheets with microstructure regions - Google Patents
Light source module having a plurality of optical sheets with microstructure regions Download PDFInfo
- Publication number
- CN202361277U CN202361277U CN2011205032388U CN201120503238U CN202361277U CN 202361277 U CN202361277 U CN 202361277U CN 2011205032388 U CN2011205032388 U CN 2011205032388U CN 201120503238 U CN201120503238 U CN 201120503238U CN 202361277 U CN202361277 U CN 202361277U
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- light source
- source module
- optical sheet
- scattering layer
- microprism
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- 230000003287 optical effect Effects 0.000 title claims abstract description 60
- 239000000758 substrate Substances 0.000 claims description 11
- 230000007547 defect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
A light source module having a plurality of optical sheets with microstructure regions comprises the optical sheets, an LED (light emitting diode) array, a scattering layer and a reflecting layer, wherein the optical sheet includes a base sheet; the LED array is arranged on one or two sides of the base sheet at a certain distance; and the scattering layer and the reflecting layer are sequentially arranged below the base sheet. The light source module is characterized in that a plurality of microstructures in X and Y directions are arranged on the base sheet. According to the utility model, light emitted by the LED array and coupled to the optical sheet is emergent from the microstructures directly, or after being scattered by the scattering layer, or after being reflected by the reflecting layer. The light source module provided by the utility model can eliminate or reduce the nonuniform bright and dark regions in the light source module caused by separated light emitting bodies, can meet the optical requirements, such as optimized angle distribution and uniformity, and can overcome the defect that the existing single optical sheet can not realize the above comprehensive effects.
Description
Technical field
The utility model relates to a kind of optical sheet that is used for light source modules such as backlight of LCD and LED illumination module, is meant the light source module of the optical sheet that contains the different orientation microstructure area especially.
Background technology
Light emitting diode (LED) is widely used in every field just more and more as a kind of green energy conservation light source, in light source modules such as backlight of LCD, illumination.Different with the cold cathode luminous source that is applied to these fields before this (CCFL) is that LED is a point source of light.Produce clear zone and the dark space that the unexistent led light source of wire CCFL light source replaces between points during application.What propose at present improves the clear zone and the method for dark space that led light source replaces between points, or bright dipping very complicated or that reduce backlight source module or LED lighting lamp group significantly is regional.Therefore with LED as light source modules such as the backlight of LCD of light source and illuminations in, be starved of a kind of optical sheet, in the optical function that does not influence bright dipping zone and realization optimization, the appearance between the bright dark space of avoiding replacing between the LED.
Summary of the invention
To above deficiency; The purpose of the utility model is to provide a kind of light source module with a plurality of microstructure area optical sheets; Optical sheet in the light source module comprises substrate and is positioned at on-chip a plurality of microstructure area; Micro-structural in each microstructure area has the orientation of setting; The interregional micro-structural of adjacent microstructures has different orientations, make backlight of LCD, LED lighting source or other light sources module eliminate non-homogeneous zone light and dark in the light source module that causes owing to the discrete light-emitting body, has realized optics requirements such as angle distribution that the light source module optimizes, the uniformity.
The technical scheme of the utility model realizes in the following manner: a kind of light source module with a plurality of microstructure area optical sheets; Comprise optical sheet, led array, scattering layer and reflecting layer; Optical sheet includes substrate; One side or two sides of substrate are provided with led array separated by a distance, and the below of substrate is provided with scattering layer and reflecting layer successively, it is characterized in that: be provided with above the described substrate along many groups micro-structural of X, Y direction.
Also be provided with LGP in described scattering layer and the optical sheet between the micro-structural.
Described scattering layer is the scattering layer that contains scattering point or diffusing structure.
Described micro-structural is along X, regularly arranged microprism I, II, the III of Y direction.
Described micro-structural be contain average along Y direction, position in regions at random or the microprism II that distributes of approximate random, III and average along directions X, position in regions at random or the microprism I that distributes of approximate random.
The utility model, the light that sends and be coupled to optical sheet by led array be directly from the microprism outgoing, or by after the scattering layer scattering again from the microprism outgoing, or see through the scattering layer surface outgoing of the microprism from optical sheet again after the layer reflection that is reflected.Along the micro structure array of Y direction, through refraction, diffraction or scattering, make from the light of the optical sheet zone outgoing of contiguous LED evenly to distribute at directions X, eliminate or weaken the light and dark inhomogeneities in contiguous LED zone in the light source module.Micro-structural along directions X changes the angle distribution from the optical sheet emergent light.Concentrate to the optical sheet normal direction significantly from the light of optical sheet outgoing, eliminate or reduced non-homogeneous zone light and dark in the light source module that causes owing to the discrete light-emitting body.
Description of drawings
Fig. 1 is the light source module embodiment 1 of the utility model.
Fig. 2 is the light source module embodiment 2 of the utility model.
Fig. 3 is the light source module embodiment 3 of the utility model.
The specific embodiment
By shown in Figure 1, for having the light source module embodiment 1 of a plurality of microstructure area optical sheets.Optical sheet 1200 of the present invention contains substrate 1201, along the microprism I 1202 and the microprism II 1203 of X, Y direction, is provided with scattering layer 1204 and reflecting layer 1206 successively in optical sheet 1200 bottom surfaces, on substrate 1201 one side along directions X, LED array 1205 is housed.Between the LED in the array at intervals.The light that sends and be coupled to optical sheet by led array 1205 is directly from the microprism outgoing, or by after scattering layer 1204 scatterings again from the microprism outgoing, or see through the scattering layer surface outgoing of the microprism from optical sheet again after layer 1206 reflection that is reflected.Because LED is discrete spot light, exists brightness to be significantly less than the dark space in LED dead ahead between the LED, thereby form the light and dark non-uniform areas in contiguous LED place in the light source module.Along the microprism II 1203 of Y direction, through refraction, diffraction or scattering, make from the light of the optical sheet zone outgoing of contiguous LED evenly to distribute at directions X, eliminate or weaken the light and dark inhomogeneities in contiguous LED zone in the light source module.The angle distribution that changes from optical sheet 1200 emergent lights along the microprism I of directions X 1202.Is the microprism at right angle like micro-structural I 1302 for drift angle, concentrates to the optical sheet normal direction significantly from the light of optical sheet 1200 outgoing.
By shown in Figure 2, for having the light source module embodiment 2 of a plurality of microstructure area optical sheets.The exemplary optical module contains LGP 1301, led array 1302, diffusion layer 1303, reflecting layer 1304 and optical sheet 1300 of the present invention.LGP 1301 is positioned at the below of optical sheet 1300 and diffusion layer 1303.Scattering point or diffusing structure are further contained in the back side of LGP 1301.The optical sheet 1300 of the utility model contains along the microprism II 1305 of Y direction with along the microprism I 1306 of directions X.Send and be coupled to the light of LGP by led array, scattering point on LGP 1301 or diffusing structure, or through the reflecting layer 1304 that is contained in the LGP back side, again through the LGP outgoing.Incide optical sheet 1300 from the light of LGP 1301 outgoing through diffusion layer 1303.Along the microprism II 1305 of Y direction, make the light of the optical sheet zone outgoing of contiguous LED, through refraction, diffraction or scattering, evenly distribute at directions X, eliminate or weaken the light and dark inhomogeneities in contiguous LED place in the backlight.The angle distribution that changes from optical sheet 1300 emergent lights along the microprism I of directions X 1306.Is the microprism at right angle like micro-structural I 1306 for drift angle, concentrates to the optical sheet normal direction significantly from the light of optical sheet 1300 outgoing.
By shown in Figure 3, for the third contains the light source module example of the utility model optical sheet.Optical sheet 1400 of the present invention contain average along Y direction, position in regions at random or approximate random the microprism II 1401 and the microprism III 1403 that distribute, average along directions X, position in regions at random or the microprism I 1402 that distributes of approximate random.Optical sheet 1400 also further contains the scattering layer 1406 of scattering point or diffusing structure.Led array 1404 and 1405 is loaded on the two ends of optical sheet 1400 in the light source module.Reflecting layer 1407 is positioned at the back side of optical sheet 1400, make 1406 outgoing of optical sheet scattering layer and incide the light in reflecting layer, after reflective layer reflects from the place ahead outgoing of optical sheet.Average microprism II 1401 and microprism III 1403 along the Y direction; Make from the light of the optical sheet zone outgoing of contiguous led array 1404,1405; Through refraction, diffraction or scattering, evenly distribute at directions X, eliminate or weaken in the backlight the light and dark inhomogeneities in contiguous LED place.The angle distribution that changes from optical sheet 1400 emergent lights along the microprism I of directions X 1402.
Claims (5)
1. light source module with a plurality of microstructure area optical sheets; Comprise optical sheet, led array, scattering layer and reflecting layer; Optical sheet includes substrate; One side or two sides of substrate are provided with led array separated by a distance, and the below of substrate is provided with scattering layer and reflecting layer successively, it is characterized in that: be provided with above the described substrate along many groups micro-structural of X, Y direction.
2. a kind of light source module with a plurality of microstructure area optical sheets according to claim 1 is characterized in that: also be provided with LGP in described scattering layer and the optical sheet between the micro-structural.
3. a kind of light source module with a plurality of microstructure area optical sheets according to claim 1, it is characterized in that: described scattering layer is the scattering layer that contains scattering point or diffusing structure.
4. a kind of light source module with a plurality of microstructure area optical sheets according to claim 1 is characterized in that: described micro-structural is along X, regularly arranged microprism I, II, the III of Y direction.
5. a kind of light source module with a plurality of microstructure area optical sheets according to claim 1 is characterized in that: described micro-structural be contain average along Y direction, position in regions at random or the microprism II that distributes of approximate random, III and average along directions X, position in regions at random or the microprism I that distributes of approximate random.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205032388U CN202361277U (en) | 2011-12-07 | 2011-12-07 | Light source module having a plurality of optical sheets with microstructure regions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205032388U CN202361277U (en) | 2011-12-07 | 2011-12-07 | Light source module having a plurality of optical sheets with microstructure regions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202361277U true CN202361277U (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205032388U Expired - Fee Related CN202361277U (en) | 2011-12-07 | 2011-12-07 | Light source module having a plurality of optical sheets with microstructure regions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202361277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110681059A (en) * | 2019-09-28 | 2020-01-14 | 复旦大学 | Phototherapy equipment for cervical spondylosis |
-
2011
- 2011-12-07 CN CN2011205032388U patent/CN202361277U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110681059A (en) * | 2019-09-28 | 2020-01-14 | 复旦大学 | Phototherapy equipment for cervical spondylosis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20181207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |