CN2596388Y - High efficiency plane light source - Google Patents
High efficiency plane light source Download PDFInfo
- Publication number
- CN2596388Y CN2596388Y CN 03203539 CN03203539U CN2596388Y CN 2596388 Y CN2596388 Y CN 2596388Y CN 03203539 CN03203539 CN 03203539 CN 03203539 U CN03203539 U CN 03203539U CN 2596388 Y CN2596388 Y CN 2596388Y
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- China
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- light source
- high efficiency
- curved surface
- guide plate
- light
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Abstract
The utility model relates to a high efficiency plane light source, which mainly comprises an incident light source positioned at the periphery of light region of the plane light source, a light conducting plate, and refraction and reflection curved surface units arranged on at least one surface of the upper surface or the lower surface of the light conducting plate. When the high efficiency plane light source is designed into a background light source, the high efficiency plane light source also comprises a light reflection sheet positioned below the light conducting plate, and a light diffusion sheet which is arranged according to use requirements and is positioned on the light conducting plate, or a prism sheet for increasing light. The utility model is characterized in that every refraction and reflection curved surface unit is intersected with the upper surface or the lower surface of the light conducting plate where the refraction and reflection curved surface unit is positioned to obtain respective intersecting faces; in any one intersecting face, at least two contour lines of the intersecting faces with trend of virtual connection are in straight line, and are intersected into V state; every refraction and reflection curved surface unit is in array type in whole. The utility model has the advantages that a point group broken by incurvature radius in unit area is enlarged; the refraction and reflection efficiency is enhanced; consequently, the light energy utilization efficiency of the plane light source is enhanced.
Description
Technical field
The utility model relates to a kind of planar light source, its incident light source is positioned at overseas the enclosing of light of planar light source, this planar light source is widely used in the prospect or the background illumination of LCD (LCD) and advertisement technology picture, and use this planar light source this in light and shade contrast of zones of different or blocking of being carried out on by light emergence face or appear the field of realizing that picture and text show at this planar light source.
Background technology
At present, domestic and international known this type of planar light source mainly comprises: be positioned at planar light source the overseas incident light source that encloses of light, light guide plate, be arranged on light guide plate upper surface or lower surface folding, the reflecting curved surface unit of one side at least; When being designed to background light source, also comprise the light-reflecting sheet that is positioned at below the light guide plate and according to using needs prismatic lens setting, that be positioned at the light diffusing sheet above the light guide plate or the usefulness of adding lustre to.Each folding, reflecting curved surface unit intersect the cross surface mutually that obtains separately with the light guide plate upper surface or the lower surface at its place, with regard to the form that outline line constituted of arbitrary crossing face trend virtual connections, the circle of separate type are arranged; Separate type is arranged and have the straight-line segment form of certain width, as Chinese patent 01219472.7; Monoblock type is arranged and have the straight line form of certain width, as Chinese patent 98247976.X and 02215190.7; Monoblock type is arranged and have the rounding top and bottom pattern of certain width, as Chinese patent 98247976.X, the integrated positively related principle of point according to folding, catoptrical light intensity and the sudden change of unit area intrinsic curvature radius, the folding of these forms, reflecting curved surface unit, make under equal conditions the inclined to one side end of the optical energy utilization efficiency of planar light source.
Summary of the invention
The purpose of this utility model is: improve optical energy utilization efficiency, a kind of high efficiency planar light source is provided.
The purpose of this utility model realizes in the following manner: a kind of high efficiency planar light source comprises: be positioned at planar light source the overseas incident light source that encloses of light, light guide plate, be arranged on light guide plate upper surface or lower surface folding, the reflecting curved surface unit of one side at least; When being designed to background light source, also comprising the light-reflecting sheet that is positioned at below the light guide plate and, it is characterized in that according to using needs prismatic lens setting, that be positioned at the light diffusing sheet above the light guide plate or the usefulness of adding lustre to:
The light guide plate upper surface or the lower surface at each folding, reflecting curved surface unit and its place intersect the cross surface mutually that obtains separately, in arbitrary crossing face, have at least outline line that two phase cross surfaces tend to virtual connections linearly, and intersect " V " form; Each folding, reflecting curved surface unit are array-like on the whole.
Described folding, reflecting curved surface unit be the light guide plate upper surface or the lower surface at its place relatively, can female or male.
The outline line of described phase cross surface trend virtual connections is meant tiny distortion or the bending of ignoring the outline line that causes in process, the straight line or the curve of the taxis of reflection phase cross surface subject form; Or before the processing, roll over, during the design of the original plane of reflecting curved surface unit, the original plane outline line of folding, reflecting curved surface unit.
Described " V " form, the sensing of its drift angle can be arbitrarily, towards or incident light source dorsad.
Described " V " form, the angular dimension of its drift angle, scope during 0-180 ° open.
Described " V " form, its height and width dimensions all are not less than 0.001mm
Described each folding, reflecting curved surface unit are array-like on the whole: in the near more zone of distance incident light source, each folding, reflecting curved surface cellular array are sparse more, then dense more on the contrary.
Described incident light source is meant various light source structures or element, from the side or the visual physics light source of human eye that provides for light guide plate of side angle.
The utility model has the advantages that: by changing the form of folding, reflecting curved surface unit, make the point set of unit area intrinsic curvature radius sudden change enlarge, folding, reflection efficiency improve, thereby have improved the optical energy utilization efficiency of planar light source.
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Description of drawings
Accompanying drawing 1 is the vertical view of embodiment one;
Accompanying drawing 2 is vertical views of embodiment two;
Accompanying drawing 3 is side views of embodiment three;
Embodiment
Embodiment one: a kind of high efficiency planar light source, embodiment when disposing one-sided light source, as shown in Figure 1, comprise: be positioned at 6 peripheries, light territory of planar light source incident light source 1, light guide plate 2, be arranged on light guide plate 2 upper surfaces or lower surface folding, the reflecting curved surface unit 3 of one side at least, each folding, reflecting curved surface unit intersect the cross surface mutually that obtains separately with the light guide plate upper surface or the lower surface at its place, in arbitrary crossing face, the outline line that has two phase cross surfaces trend virtual connections at least linearly and intersects " V " form; Each folding, reflecting curved surface unit are array-like on the whole: in the near more zone of distance incident light source, each folding, reflecting curved surface cellular array are sparse more, then dense more on the contrary.
Embodiment two: a kind of high efficiency planar light source, embodiment during configuration opposite side bilateral light source, as shown in Figure 2, comprise: be positioned at 6 peripheries, light territory of planar light source incident light source 1, light guide plate 2, be arranged on light guide plate 2 upper surfaces or lower surface folding, the reflecting curved surface unit 3 of one side at least, each folding, reflecting curved surface unit intersect the cross surface mutually that obtains separately with the light guide plate upper surface or the lower surface at its place, in arbitrary crossing face, the outline line that has two phase cross surfaces trend virtual connections at least linearly and intersects " V " form; Each folding, reflecting curved surface unit, be array-like on the whole: in the near more zone of distance incident light source, each folding, reflecting curved surface cellular array are sparse more, then dense more on the contrary, in this example, the incident light source that is configured in the opposite side bilateral is a symmetrical light sources, and the distance table of a certain zone and incident light source is shown in the light territory: this zone is to the distance between the nearest incident light source, thereby the array form has symmetry.
Embodiment three: a kind of high efficiency planar light source, embodiment when disposing one-sided light source and being designed to background light source, as shown in Figure 3, comprise: be positioned at 6 peripheries, light territory of planar light source incident light source 1, light guide plate 2, be arranged on light guide plate 2 upper surfaces or lower surface folding, the reflecting curved surface unit 3 of one side at least, be positioned at light-reflecting sheet 4 below the light guide plate 2, be positioned at the light diffusing sheet 5 above the light guide plate; Folding, the form of reflecting curved surface unit 3 and their array characteristic are with embodiment one.
Claims (7)
1, a kind of high efficiency planar light source comprises: be positioned at planar light source the overseas incident light source that encloses of light, light guide plate, be arranged on light guide plate upper surface or lower surface folding, the reflecting curved surface unit of one side at least; When being designed to background light source, also comprise the light-reflecting sheet that is positioned at below the light guide plate, with according to using needs prismatic lens setting, that be positioned at the light diffusing sheet above the light guide plate or the usefulness of adding lustre to, it is characterized in that: each folding, reflecting curved surface unit intersect the cross surface mutually that obtains separately with the light guide plate upper surface or the lower surface at its place, in arbitrary crossing face, the outline line that has two phase cross surfaces trend virtual connections at least linearly and intersects " V " form; Each folding, reflecting curved surface unit are array-like on the whole.
2, a kind of high efficiency planar light source according to claim 1 is characterized in that: described folding, reflecting curved surface unit be the light guide plate upper surface or the lower surface at its place relatively, can female or male.
3, a kind of high efficiency planar light source according to claim 1 is characterized in that: described " V " form, the sensing of its drift angle can be arbitrarily.
4, a kind of high efficiency planar light source according to claim 1 is characterized in that: described " V-arrangement attitude, the angular dimension of its drift angle, scope during 0-180 ° open.
5, a kind of high efficiency planar light source according to claim 1 is characterized in that: described " V " form, its height and width dimensions all are not less than 0.001mm
6, a kind of high efficiency planar light source according to claim 1 and 2, it is characterized in that: described each folding, reflecting curved surface unit, be array-like on the whole: in the near more zone of distance incident light source, each folding, reflecting curved surface cellular array are sparse more, then dense more on the contrary.
7, a kind of high efficiency planar light source according to claim 1 is characterized in that: described incident light source is meant various light source structures or element, from the side or the visual physics light source of human eye that provides for light guide plate of side angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03203539 CN2596388Y (en) | 2003-02-15 | 2003-02-15 | High efficiency plane light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03203539 CN2596388Y (en) | 2003-02-15 | 2003-02-15 | High efficiency plane light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2596388Y true CN2596388Y (en) | 2003-12-31 |
Family
ID=33753824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03203539 Expired - Fee Related CN2596388Y (en) | 2003-02-15 | 2003-02-15 | High efficiency plane light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2596388Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621742A (en) * | 2012-04-13 | 2012-08-01 | 查氏电子实业(深圳)有限公司 | Liquid crystal display module |
| CN106908874A (en) * | 2016-01-14 | 2017-06-30 | 宁波长阳科技股份有限公司 | A kind of composite brightening film and backlight module |
| WO2021217406A1 (en) * | 2020-04-28 | 2021-11-04 | 深圳市汇顶科技股份有限公司 | Optical diffusion sheet, light source apparatus, and distance measurement apparatus |
-
2003
- 2003-02-15 CN CN 03203539 patent/CN2596388Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621742A (en) * | 2012-04-13 | 2012-08-01 | 查氏电子实业(深圳)有限公司 | Liquid crystal display module |
| CN106908874A (en) * | 2016-01-14 | 2017-06-30 | 宁波长阳科技股份有限公司 | A kind of composite brightening film and backlight module |
| CN106908874B (en) * | 2016-01-14 | 2019-04-05 | 宁波长阳科技股份有限公司 | A kind of composite brightening film and backlight module |
| WO2021217406A1 (en) * | 2020-04-28 | 2021-11-04 | 深圳市汇顶科技股份有限公司 | Optical diffusion sheet, light source apparatus, and distance measurement apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Cao Xinmin Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Cao Xinmin Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Cao Xinmin Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031231 Termination date: 20110215 |