CN101324316A - LED module unit and back light module unit - Google Patents
LED module unit and back light module unit Download PDFInfo
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- CN101324316A CN101324316A CNA2007100750544A CN200710075054A CN101324316A CN 101324316 A CN101324316 A CN 101324316A CN A2007100750544 A CNA2007100750544 A CN A2007100750544A CN 200710075054 A CN200710075054 A CN 200710075054A CN 101324316 A CN101324316 A CN 101324316A
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- light emitting
- emitting diode
- diode module
- module
- planoconvex spotlight
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Abstract
The invention relates to an LED module, which comprises an LED and a plano-convex lens with a spherical segment structure. The height of the spherical segment structure of the plano-convex lens is less than the radius of the spherical segment structure. The LED is arranged inside the plano-convex lens. The LED module has larger light emission range. The invention also relates to a backlight module using the LED module.
Description
Technical field
The present invention relates to a kind of light emitting diode (Light Emitting Diode, LED) module and the module backlight that adopts this light emitting diode module.
Background technology
Light emitting diode has plurality of advantages such as the fast and color saturation height of long working life, reliability height, reaction speed, and its development is very rapid.Industry is the further part optical characteristics that improves light emitting diode, as light emitting region, luminous intensity etc., usually light emitting diode is increased optical texture, constitutes light emitting diode module, and it is applied in fields such as illumination and plane demonstration.
Seeing also Fig. 1, is the structural representation of a kind of prior art module backlight.This module 1 backlight is a direct-type backlight module, and it comprises a framework 11, a plurality of light emitting diode module 12 and an optical diaphragm group 13.This framework 11 is one to have the rectangle framework of opening, and it comprises a base plate 110 and a plurality of sidewalls 111.These a plurality of light emitting diode module 12 are arranged on the base plate 110 of this framework 11, and it can send red (R) coloured light, green (G) coloured light and blue (B) coloured light respectively.This optical diaphragm group 13 is arranged on the sidewall 111 of this framework 11, and covers the opening of this framework 11, and it generally includes blast sheet and diffusion sheet.
Seeing also Fig. 2, is the schematic cross-section of light emitting diode module 12 shown in Figure 1.This light emitting diode module 12 comprises the collimation lens 121 of the light effect of collimating that a light emitting diode 120 and a pair of this light emitting diode 120 are sent.This collimation lens 121 is a translucent bowl-shaped structure that is centrosymmetric, and it comprises that a round platform 122 and is formed on the dented space 123 in this round platform 122.This round platform 122 comprises one first bottom surface, one second bottom surface and a side.Wherein, this first base area is bigger, and it is as light-emitting face 128, and this second base area is less, and it forms this dented space 123 to these round platform 122 inner recess, and this side is a paraboloidal part curved surface, and it is a light reflection surface 127.These round platform 122 inner curved surfaces that contain this dented space 123 comprise one first convex surface 124 and one second convex surface 125.This first convex surface 124 ringwise, this second convex surface 125 links to each other with these first convex surface, 124 1 sides.This light emitting diode 120 is arranged in the dented space 123 of this collimation lens 121, and is positioned at this paraboloidal focal position, light reflection surface 127 places.
This first convex surface 124 of the light portion directive that this light emitting diode 120 sends, this second convex surface 125 of part directive.The light a of this first convex surface 124 of directive propagates in this round platform 122 after these first convex surface, 124 refractions, and the light reflection surface 127 of this round platform 122 of directive, total reflections take place at this light reflection surface 127 in this light a, with near the direction of vertical this light-emitting face 128 by these light-emitting face 128 outgoing.The light b of this second convex surface 125 of directive through 125 refractions of this second convex surface converge effect after, this round platform 122 in, propagate, finally with near the direction of vertical this light-emitting face 128 by these light-emitting face 128 outgoing.Finally, the light that sends of this light emitting diode module 12 is all with the direction outgoing near vertical this light-emitting face 128.Thereby the light emitting region of this light emitting diode module 12 is less, and directionality is preferable.
Red, green, blue three coloured light that these a plurality of light emitting diode module 12 are sent overlap mutually in the space between this optical diaphragm group 13 and this light emitting diode module 12 and mix, so that provide uniform white light to the external world.If the distance between this optical diaphragm group 13 and this light emitting diode module 12 is shorter, cause red, green, blue three coloured light not mix fully, the light that this module 1 backlight sends presents red, green, blue coloured light spot.The light emitting region of this light emitting diode module 12 is less, and directionality is preferable, therefore, and the light overlaid that the light that this light emitting diode module 12 is sent is difficult for and other light emitting diode module 12 is sent.If fully mix three coloured light, reach mixed light effect preferably, need significantly increase the distance of 13 of this optical diaphragm group 13 and this light emitting diode module, this measure causes the height of this framework 11 to increase, it is big that the thickness of module 1 backlight also becomes thereupon, can not satisfy the demand of industry to module slimming backlight.
Industry is removed the collimation lens 121 of this light emitting diode module 12 at this kind drawback, directly utilizes light emitting diode 120 to replace the light emitting diode module 12 of this module 1 backlight.Yet the light emitting region of this light emitting diode 12 is still less, and its light emitting region is 30 degree～120 degree usually, utilizes the module thickness backlight of light emitting diode 120 still bigger, can not finely satisfy the demand of industry to module slimming backlight.
Summary of the invention
In order to solve prior art light emitting diode module light emitting region problem of smaller, be necessary the light emitting diode module that provides a kind of light emitting region bigger.
In addition, in order to solve the bigger problem of prior art module thickness backlight, be necessary to provide the module backlight of the preferable and thinner thickness of a kind of mixed light effect.
A kind of light emitting diode module, it comprises a planoconvex spotlight and a light emitting diode.This planoconvex spotlight is the segment structure, and the height of segment structure is less than the radius of segment structure.This light emitting diode is arranged on this planoconvex spotlight inside.
A kind of module backlight, it comprises an optical diaphragm group and a plurality of light emitting diode module.These a plurality of light emitting diode module and this optical diaphragm group have certain intervals.Each light emitting diode comprises a planoconvex spotlight and a light emitting diode.This planoconvex spotlight is the segment structure, and the height of segment structure is less than the radius of segment structure.This light emitting diode is arranged on this planoconvex spotlight inside.
This light emitting diode is positioned at the segment inside configuration of this planoconvex spotlight, and its light that sends light emitting region after this planoconvex spotlight refraction enlarges, and makes the light emitting region of this light emitting diode module bigger.Adopt the module backlight of this light emitting diode module, because of the light emitting region of this light emitting diode module is bigger, the different color light that it sends only needs distance short between this light emitting diode module and this optical diaphragm group, the mixing that can fully overlap reaches preferable mixed light effect.Therefore, the thinner thickness of this module backlight.
Description of drawings
Fig. 1 is the structural representation of a kind of prior art module backlight.
Fig. 2 is the schematic cross-section of light emitting diode module shown in Figure 1.
Fig. 3 is the structural representation of light emitting diode module first embodiment of the present invention.
Fig. 4 is the structural representation that adopts the module backlight of light emitting diode module shown in Figure 3.
Fig. 5 is the arrangement schematic diagram of light emitting diode module in the module backlight shown in Figure 4.
Fig. 6 is the structural representation of light emitting diode module second embodiment of the present invention.
The specific embodiment
Seeing also Fig. 3, is the structural representation of light emitting diode module first embodiment of the present invention.This light emitting diode module 22 comprises a light emitting diode 220 and a planoconvex spotlight 221.This planoconvex spotlight 221 is a transparent segment structure, and the height of segment structure is less than the radius of segment structure.This light emitting diode 220 is arranged on the segment inside configuration of this planoconvex spotlight 221, and is positioned at its bottom surface circle centre position.This light emitting diode 220 combines with this planoconvex spotlight 221 becomes a gapless integral body, and its combination can be formed in one, and also can be bonding mode.In this light emitting diode module 22, the material of this planoconvex spotlight 221 can be transparency materials such as glass, plastics, resin, acryl, and the refractive index of its material is the bigger the better usually.
Propagate in this planoconvex spotlight 221 from the light that this light emitting diode 220 sends, and the sphere of this planoconvex spotlight 221 of directive, as incident light c.This incident light c is through the sphere of this planoconvex spotlight 221, reflects when the air outgoing of these light emitting diode module 22 space outerpaces, and produces refract light d.Wherein, the normal n of this incident light c and this refract light d is through the centre of sphere of these planoconvex spotlight 221 segment structures.Theoretical according to refraction, because the refractive index of this planoconvex spotlight 221 is greater than the refractive index of air, so the angle theta of this incident light c and this normal n
1Angle theta less than this refract light d and this normal n
2Therefore, it is big that the scope of the refract light d that this incident light c produces behind the refraction action of this planoconvex spotlight 221 becomes, and promptly these light emitting diode module 22 light emitting regions are bigger, and it is luminous also disperses.
In addition, this light emitting diode module 22 also can replace single light emitting diode 220 with a plurality of light emitting diodes 220 according to the actual requirements.These a plurality of light emitting diodes 220 are with respect to the distribution that is centrosymmetric of the center of circle, bottom surface of this planoconvex spotlight 221.The light emitting region of scattering particles with this light emitting diode module 22 of further expansion can also be mixed in planoconvex spotlight 221 inside of this light emitting diode module 22.The land portions of this planoconvex spotlight 221 also can be provided with an anti-reflection film, to improve the light transmission rate of this planoconvex spotlight 221.
Seeing also Fig. 4, is the structural representation that adopts the module backlight of light emitting diode module 22 shown in Figure 3.This module 2 backlight is a direct-type backlight module, and it comprises a framework 21, a plurality of light emitting diode module 22 and an optical diaphragm group 23.This framework 21 is an ostiolate framework, and it comprises a base plate 210 and a plurality of sidewalls 211 that link to each other with this base plate.This base plate 210 is a plane, and itself and this sidewall 211 makes by highly reflective material or inner surface is pasted with reflection diaphragm.This optical diaphragm group 23 is erected on the sidewall 211 of this framework 21, covers the opening of this framework 21, and has a determining deviation with this base plate 210.These a plurality of light emitting diode module 22 can be sent red light, green light and blue light respectively, and it is positioned on these framework 21 base plates.
Seeing also Fig. 5, is the arrangement schematic diagram of light emitting diode module 22 in the module backlight 2 shown in Figure 4.These a plurality of light emitting diode module 22 are mosaic arrangement on this base plate 210, promptly the perpendicular light emitting diode module 22 adjacent of each light emitting diode module 22 with horizontal direction luminous color different.This kind arrangement mode of light emitting diode module 22 can be convenient to its different color light that sends and mix mutually, makes this module 2 backlight send the preferable white light of effect.
The light emitting region of light emitting diode module 22 is bigger in this module 2 backlight, and the different color light that it sends hour can fully overlap in this light emitting diode module 22 and this optical diaphragm group 23 distances and mix, and reaches preferable mixed light effect.Therefore, the preferable and thinner thickness of mixed light effect of this module 2 backlight.
Seeing also Fig. 6, is the structural representation of light emitting diode module second embodiment of the present invention.The light emitting diode module 22 of this light emitting diode module 32 and first embodiment is basic identical, its main distinction is: the segment structure of this planoconvex spotlight 321 comprises a sphere, comprise a plurality of projections 322 on this sphere, this projection 322 also is the segment structure, the height of these projection 322 segment structures is much smaller than its radius, and its curvature is much larger than the curvature of the segment structure of this planoconvex spotlight 321.
The planoconvex spotlight 321 of this light emitting diode module 32 comprises this a plurality of projections 322 that are the segment structure, and the curvature of this projection 322 is much larger than the curvature of this planoconvex spotlight 321, make the light emitting region of this light emitting diode module 32 bigger, adopt the module illumination effect backlight of this light emitting diode module 32 preferable and thickness is thinner.
Claims (10)
1. light emitting diode module, it comprises a planoconvex spotlight and a light emitting diode, and this planoconvex spotlight is the segment structure, and the height of this segment structure is less than the radius of this segment structure; This light emitting diode is arranged on this planoconvex spotlight inside.
2. light emitting diode module as claimed in claim 1 is characterized in that: this light emitting diode is positioned at the bottom surface circle centre position of this planoconvex spotlight.
3. light emitting diode module as claimed in claim 1 is characterized in that: this light emitting diode module comprises a plurality of light emitting diodes, and these a plurality of light emitting diodes are positioned at the bottom surface of this planoconvex spotlight, and with respect to the distribution that is centrosymmetric of this center of circle, bottom surface.
4. light emitting diode module as claimed in claim 1 is characterized in that: this light emitting diode and this planoconvex spotlight are a gapless integral body.
5. light emitting diode module as claimed in claim 4 is characterized in that: this light emitting diode and this planoconvex spotlight are one-body molded.
6. light emitting diode module as claimed in claim 4 is characterized in that: this light emitting diode and this planoconvex spotlight are to be bonded together.
7. light emitting diode module as claimed in claim 1 is characterized in that: be mixed with scattering particles in this planoconvex spotlight, its surface is provided with anti-reflection film.
8. light emitting diode module as claimed in claim 1 is characterized in that: the segment structure of this planoconvex spotlight comprises a sphere, has a plurality of projections that are the segment structure on this sphere.
9. light emitting diode module as claimed in claim 8 is characterized in that: the height of this projection segment structure is less than its radius, and the curvature of this projection segment structure is greater than the curvature of this planoconvex spotlight segment structure.
10. module backlight, it comprises an optical diaphragm group and a plurality of light emitting diode module, this light emitting diode module and this optical diaphragm group tool certain intervals is characterized in that: this light emitting diode module is any described light emitting diode module in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100750544A CN101324316B (en) | 2007-06-15 | 2007-06-15 | LED module unit and back light module unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100750544A CN101324316B (en) | 2007-06-15 | 2007-06-15 | LED module unit and back light module unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101324316A true CN101324316A (en) | 2008-12-17 |
| CN101324316B CN101324316B (en) | 2010-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100750544A Expired - Fee Related CN101324316B (en) | 2007-06-15 | 2007-06-15 | LED module unit and back light module unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101324316B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846287B (en) * | 2009-03-27 | 2012-07-04 | 利卫精密股份有限公司 | Device for eliminating overlapping shadow or track shadow of point light source |
| CN107277983A (en) * | 2017-08-04 | 2017-10-20 | 安徽宽居电器有限公司 | A kind of changeable colour LED light supplementing lamp for plants |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383639C (en) * | 2003-09-06 | 2008-04-23 | 鸿富锦精密工业（深圳）有限公司 | Back-to-light module |
| CN1719958B (en) * | 2004-12-31 | 2010-09-15 | 彭洲龙 | Energy-saving long-life LED illuminating lamp and manufacture method thereof |
-
2007
- 2007-06-15 CN CN2007100750544A patent/CN101324316B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846287B (en) * | 2009-03-27 | 2012-07-04 | 利卫精密股份有限公司 | Device for eliminating overlapping shadow or track shadow of point light source |
| CN107277983A (en) * | 2017-08-04 | 2017-10-20 | 安徽宽居电器有限公司 | A kind of changeable colour LED light supplementing lamp for plants |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101324316B (en) | 2010-12-29 |
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