CN1688029A - High efficient LED - Google Patents
High efficient LED Download PDFInfo
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- CN1688029A CN1688029A CNA2005100497903A CN200510049790A CN1688029A CN 1688029 A CN1688029 A CN 1688029A CN A2005100497903 A CNA2005100497903 A CN A2005100497903A CN 200510049790 A CN200510049790 A CN 200510049790A CN 1688029 A CN1688029 A CN 1688029A
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- light
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- emitting diode
- lens
- high efficient
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48135—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip
- H01L2224/48137—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip the bodies being arranged next to each other, e.g. on a common substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73265—Layer and wire connectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
Abstract
A high efficient light emitting diode includes at least one diode chip, a high thermal conductivity metal base without any reflecting bowls, among which, the chip is installed in said metal base positively or up side down, a lens with a special curved face is set above the chip composed of three parts: the top is a sphere with radius R1, the distance D from its top to the chip is K R1 n2/(n1-n2), in which, n2 n1 are the lens medium and air index of refraction separately K is a constant, the value is decided by the needed light output angle, the second part is a sphere with the radius R2 near the chip place, its core is on the chip or close to it, the third part is a sphere between the two spheres, the curvature radius is between R1 and R2.
Description
Technical field
What the present invention relates to is a kind of high efficient LED, can be used for making do not share the same light high efficient LED, optically focused light-emitting diode and the illuminating lamp of output angle, be used to throw light on, reading lamp, traffic lights and the display etc. of auto lamp, mine lamp, shot-light, stage lighting, aircraft and automobile etc.
Background technology
The light-emitting diode of prior art is installed in light-emitting diode chip for backlight unit in the reverberation bowl usually, and there are light transmission medium and lens in chip the place ahead, the outgoing behind reverberation bowl reflection and lens light gathering of light-emitting diode chip for backlight unit issued light.Because the size of reverberation bowl is more much bigger than chip, the chip issued light than the very large virtual image of Duoing of chip, makes spotlight effect variation, chip issued light low at repeatedly reflection increase, light loss increase, the light utilization efficiency at the interface of light transmission medium, lens and the air of light-emitting diode through size of reverberation bowl reflection back formation; Large-power light-emitting diodes particularly is because of its chip size is big, spotlight effect is poorer.The large-power light-emitting diodes of prior art is in order to obtain good spotlight effect; except with large-sized reverberation bowl, usually also need a taper collector lens that volume is very big; not only light utilization efficiency is low but also its taper collector lens volume is big for the light-emitting diode of this kind structure, Heavy Weight, cost height, installs also inconvenient.
Secondly, the light angle of emergence of existing light-emitting diode chip for backlight unit is all less than 2 π, and the loss of chip issued light is big, and light taking-up efficient is low, and promptly effective luminous efficiency of light-emitting diode is low.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned existence, and a kind of light-emitting diode of high light utilization efficiency and the high efficient LED of high light gathering efficiency are provided, can be used for making the do not share the same light spotlight and the illuminating lamp of output angle.
Analyze existing light-emitting diode structure as can be known, the reverberation bowl of existing light-emitting diode is that existing light-emitting diode light utilization efficiency is low, one of the major reason of spotlight effect difference.Light-emitting diode of the present utility model has been abolished reflection bowl, thereby can be made into the light-emitting diode of high light utilization efficiency and high-effective concentration.
Analyze existing light-emitting diode structure also as can be known, the light angle of emergence of existing light-emitting diode chip for backlight unit is all less than 2 π, and light emitting diode construction of the present utility model can make the light angle of emergence of chip greater than 2 π, thereby can improve effective luminous efficiency of light-emitting diode.
Light-emitting diode of the present invention includes at least one light-emitting diode chip for backlight unit, used high heat conductance glue or scolding tin formal dress or upside-down mounting on the metab of a high heat conductance, it is characterized in that areflexia bowl on the described metab, there are the lens with special surface the chip top, the curved surface of described lens is made up of three parts: its top is that radius is the sphere of R1, the distance of sphere summit and chip is about KR1n2/ (n1-n2), n2 wherein, n1 is respectively the refractive index of lens medium and air, K is a constant, the size that is decided by desired smooth output angle θ, for example require the output directional light, be θ=0, then K=1.The second portion of described lens is that the radius at nearly chip place is the sphere of R2, and its centre of sphere can be similar to the chip issued light and do not reflect and the straight line outgoing on the chip or near it.The third part of described lens curved surface is the curved surface between above-mentioned two parts, and the radius of curvature of its curved surface is between R1 and R2.
Between described lens and the chip, between lens and the metab light transmission medium layer is arranged, for example silica gel, resin or plastics etc.
Described metab is the plane, eliminated the large scale virtual image that the reverberation bowl by prior art forms, make dimension of light source narrow down to minimum, be the size of chip or the size that chip adds luminous bisque, thus the output light that is easy to design optical system, raising light outgoing efficient and obtains institute's light requirement angle of emergence.
Described metab is platform or the cone that platform is arranged, and makes the light angle of emergence that chip sends can be greater than 2 π, thereby improves effective luminous efficiency of light-emitting diode.
In order to obtain high efficiency optically focused emergent light, described light-emitting diode can be furnished with an external light reflection device, paraboloidal reflector for example, allow described chip be positioned on the described paraboloidal focus or near, make from chip send, can be through the light of the second portion curved surface outgoing of said lens through described reflector directive the place ahead, thereby can obtain the emergent light of high light utilization efficiency, good optically focused.
Light-emitting diode of the invention described above and external light reflection device can constitute a unit, and one or more unit can be installed by the requirement of illumination patterns, for example can be used for the high beam of automobile and dipped headlights etc.
Described at least one light-emitting diode chip for backlight unit can be identical illuminant colour or different colors, thereby but the light-emitting diode, the colour temperature that can be made into different colors can be in harmonious proportion the color of white light emitting diode, emergent light of high color rendering index (CRI) increases the light-emitting diode etc. of the look drift revisal that takes place with the operating time.
High light utilization efficiency light-emitting diode of the present invention, compare with the light-emitting diode of prior art, the light-emitting diode of have light utilization efficiency height, luminous efficiency height, can be made into high efficiency, good optically focused or be designed on demand not being shared the same light the angle of emergence can be in harmonious proportion the white light emitting diode of high color rendering index (CRI), the color of emergent light and increases the advantages such as light-emitting diode of the look drift revisal that takes place with the operating time but also can be made into colour temperature.
Description of drawings
Fig. 1 is the optically focused principle schematic of the light-emitting diode of prior art.
Fig. 2 is the light outgoing principle schematic of the light-emitting diode of another prior art.
Fig. 3 is the structural representation of an embodiment of high efficient LED lamp of the present invention.
Fig. 4 is the structural representation of another embodiment of high efficient LED lamp of the present invention.
Fig. 5 is the structural representation of another embodiment of high efficient LED lamp of the present invention.
Fig. 6 is the structural representation of another embodiment of high efficient LED lamp of the present invention.
Fig. 7 is the structural representation of another embodiment of high efficient LED lamp of the present invention.
Embodiment
Sign in the accompanying drawing is as follows:
1-chip 2-reverberation bowl 3-lens
The 4-tie lines 5-lead-out wire 6-virtual image that is electrically connected
7-output light 8-output light 9-output light
10-chip 11-silicon substrate 12-scolding tin or heat-conducting glue
13-Metal Substrate 14-reflection bowl 15-virtual image
16-output light 17-chip 18-Metal Substrate
The 18a-Metal Substrate plane 18b-Metal Substrate table top 18c-Metal Substrate conical surface
Many table tops of 18d-Metal Substrate 18e-Metal Substrate conical surface 19-lens
19a-lens top 19b-bottom lens 19c-lens mid portion
19d-lens fixing feet 20-output light 21-output light
22-lens fillet surface 23-output light 23-reflection back output light
The luminous bisque 24a-of 24-light transmission medium layer 25-dielectric layer
26-output light 27-insulating barrier 28-conductive layer
29-screw 30-dielectric layer 31-light-emitting diode
32-reflective optical system 33-light outgoing window 34-radiator
35-air stream 36-light emitting diode light reflector element
The present invention will be described in detail below in conjunction with accompanying drawing: Fig. 1 is the optically focused principle schematic of the light-emitting diode of prior art.1 is light-emitting diode chip for backlight unit among Fig. 1, and 2 is the reflection bowl of fixed chip, and 3 is light transmission medium and collector lens, and 4 are the tie lines that is electrically connected of light-emitting diode chip for backlight unit, and 5 is the light-emitting diode lead-out wire.As seen from Figure 1, chip 1 issued light forms the virtual image 6 that size is more much bigger than chip after reverberation bowl 2 reflections, and this makes light-emitting diode spotlight effect variation; As shown in Figure 1, the paraxial light that sends the directive dead ahead from chip 1 central authorities can become the light outgoing parallel with optical axis through lens 3 optically focused, shown among Fig. 17.But through the light of reverberation bowl reflection then as the light that sends from virtual image 6, can not finely assemble, shown among Fig. 18.Light in solid angle α then can't finely utilize, shown among Fig. 19.Thereby the light utilization efficiency of this kind light-emitting diode is low, the optical convergence weak effect.
Fig. 2 is the light outgoing principle schematic of the power type light-emitting diode of prior art.Figure 2 shows that the example of the power type light-emitting diode of a flip-chip, 10 is light-emitting diode chip for backlight unit among Fig. 2, and it is fixed on the reflection bowl 14 of Metal Substrate 13 through a silicon substrate 11 and scolding tin or heat-conducting glue 12.Because the high power LED chip size is big, the size of used reverberation bowl is bigger, forms one cun bigger virtual image 15, thereby more is difficult to optically focused, shown among Fig. 2 16.Prior art is for this kind power type light-emitting diode; in order to obtain good optically focused, usually also to need to add in addition a taper collector lens (not drawing among the figure) that volume is very big; not only volume is big for this kind collector lens, Heavy Weight, cost height, install also inconveniently, and light utilization efficiency is low.Identical among Fig. 2 among the meaning of other digital representative and Fig. 1.
Fig. 3 is the structural representation of an embodiment of high efficient LED of the present invention.17 is at least one light-emitting diode chip for backlight unit among Fig. 3, used high heat conductance glue or scolding tin formal dress or upside-down mounting on the metab 18 of a high heat conductance, its method of connecting electrodes can be with common formal dress or the connection method of upside-down mounting (not drawing among the figure), areflexia bowl on the described metab 18, its one side that chip is installed is plane 18a, there are the lens 19 with special surface chip 17 tops, the curved surface of described lens is made up of three parts: its top 19a is that radius is the sphere of R1, the distance D of sphere summit and chip is about KR1n2/ (n2-n1), n2 wherein, n1 is respectively the refractive index of lens medium and air, K is a constant, the size that is decided by desired smooth output angle θ, for example require the output directional light, be θ=0, K=1 then is shown among Fig. 3 20.The second portion 19b of described lens is that the radius at nearly chip place is the sphere of R2, and its centre of sphere on chip or in its vicinity can be similar to the chip issued light and do not reflect and the straight line outgoing, shown among Fig. 3 21.The third part 19c of described lens curved surface is the curved surface between above-mentioned two parts, the radius of curvature of its curved surface 22 is between R1 and R2, utilize the focal length of sphere to increase and diminishing principle with the distance of light from optical axis, select this different fillet surface, can obtain the angle of emergence and the 20 close emergent lights of emergent light, shown among Fig. 3 23, certainly, if necessary, 20 with 23 and person's the angle of emergence also can be different.
As seen from Figure 3, the emergent light of described light-emitting diode can be divided into two parts: a part from the light of the 19a of first of lens and third part 19c outgoing, be that the angle of emergence of light behind lens of chip outgoing in solid angle β is θ, light is then exported and is directional light or near parallel light in θ=0 for example; The big I of light angle of emergence θ selects the fillet surface of different n2, R1, D and R1 and R2 to obtain on demand.Another part is from the light of the second portion 19b outgoing of lens, is the light of chip outgoing in solid angle δ that their outgoing directions of light behind lens are constant substantially, just as one from the light of point-source of light to around emission.
As seen from Figure 3, the installation chip place of described metab 18 is the plane, this has eliminated the shortcoming of the large scale virtual image that the reverberation bowl by prior art forms, make dimension of light source narrow down to minimum, be the size of chip 17 or the size that chip adds luminous bisque, thus be easy to design high light utilization efficiency optical system, improve light outgoing efficient and obtain the output light of institute's light requirement angle of emergence.
Described at least one light-emitting diode chip for backlight unit 17 can be identical illuminant colour or different colors, thereby but the light-emitting diode, the colour temperature that can be made into different colors can be in harmonious proportion the color of white light emitting diode, emergent light of high color rendering index (CRI) increases the light-emitting diode etc. of the look drift revisal that takes place with the operating time.
Between described lens 19 and chip 17 and the metab 18 light transmission medium layer 25 is arranged, for example silica gel, resin or plastics etc.
Fig. 4 is the structural representation of another embodiment of high efficient LED of the present invention, metab 18 shown in the figure has a protrusion platform or the cone 18c of a protrusion platform 18b is arranged, the light angle of emergence that chip is sent can be greater than 2 π, as 26 emergent lights that are depicted as greater than 2 π among Fig. 4, thereby can improve effective luminous efficiency of light-emitting diode.4 are the lead-in wire of light-emitting diode chip for backlight unit to lead-out wire 5 among Fig. 4, and lead-out wire 5 is used for light-emitting diode and external power are connected, to light light-emitting diode; 27 is insulating barrier, and 28 is the conductive layer on the insulating barrier, is used to go between 4 and the interconnecting of lead-out wire 5.Described metal bottom 18 also can have at least one fixed screw 29 or at least one screw hole, adds on the radiator owing to light-emitting diode is fixed on.Identical among Fig. 4 among the meaning of other digital representative and Fig. 3.
Fig. 5 is the structural representation of another embodiment of high efficient LED of the present invention, and the platform 18d of the installation chip 17 shown in the figure has a plurality of, and at least one chip 17 is installed on each platform; The conical surface 18e of platform has reflection layer, with the light of reflection chip 17 to side-emitted, shown in 23a among Fig. 5; Lens 19 have at least one fixing feet 19d, are used to penetrate the hole internal fixation lens 19 of metab 18; Between lens 19 and the metab 18 light transmission medium 30 is arranged; Identical among Fig. 5 among the meaning of other digital representative and Fig. 3 and 4.
Fig. 6 is the structural representation of another embodiment of high efficient LED of the present invention, high efficient LED 31 shown in the figure has a reflective optical system 32, for example paraboloidal reflective optical system, light-emitting diode chip for backlight unit is positioned on this paraboloidal focus or near it, make by the light of light-emitting diode second portion 19b outgoing and after reflector 32 reflections, be bordering on parallel parabolic over glaze or by the light angle of emergence outgoing of design, thus with the light of light-emitting diode other parts outgoing common form high light utilization efficiency, well assemble or the photodistributed emergent light of design on demand.Simultaneously, at the light outgoing window 33 of reflective optical system 32 light-passing board can be arranged, it can be plate transparent, painted, diffusion, also optical textures such as a series of lenslets, little prism can be arranged on it.
As shown in Figure 6, high efficient LED 31 of the present invention can be fixed on the radiator 34 with its screw 29, if be used on the automobile, also can be designed to allow the automobile space-time airflow passes radiator 34 of advancing, in order to LED heat radiating, shown among Fig. 5 35.Identical among Fig. 6 among the meaning of other digital representative and Fig. 5.
Fig. 7 is the structural representation of another embodiment of high efficient LED of the present invention, have shown in the figure a plurality of as shown in Figure 6 light-emitting diode 31 and the unit 36 that constitutes of reflective optical system 32, be installed in the example on the Different Plane of radiator by the photodistributed requirement of outgoing, for example be used for dazzle light, dipped headlights and light fixture etc.Identical among Fig. 7 among the meaning of other digital representative and Fig. 6.
Each embodiment that the scope of protection of present invention is not limited to introduce herein, the know-how that relates to is that the general personnel of this specialty are familiar with, and therefore as long as understand content of the present invention, can do various forms of conversion and replacement.
Claims (10)
1, a kind of high efficient LED, it includes at least one light-emitting diodes chip (17), a high heat conductivity metal base (18), described chip by formal dress or upside-down mounting on described metab, the electrode of chip links to each other with lead-out wire (28,5) through lead-in wire (4), is used to connect external power; The installation chip one side that it is characterized in that described metab (18) does not have reflection bowl for plane or platform, there are the lens (19) with special surface chip (17) top, the curved surface of described lens (19) is made up of three parts: its top is that radius is the sphere of R1, the distance D of sphere summit and chip is KR1n2/ (n1-n2), wherein n2, n1 are respectively the refractive index of lens medium and air, K is a constant, and its numerical value is decided by the size of desired smooth output angle θ; The second portion of described lens is that the radius at nearly chip place is the sphere of R2, and its centre of sphere can be similar to the chip issued light and do not reflect and the straight line outgoing on the chip or near it; The third part of described lens curved surface is the curved surface between above-mentioned two parts, and the radius of curvature of its curved surface is between R1 and R2.
2, high efficient LED according to claim 1 is characterized in that described K ≈ 1, and promptly θ ≈ 0, and first and second parts output light of lens (19) is directional light.
3, high efficient LED according to claim 1, the installation chip place that it is characterized in that described metab (18) is that the light angle of emergence that chip is sent can be greater than plane (18a) platform of 2 π or the platform (18b) on the cone (18c).
4, according to claim 1 or 3 described high efficient LEDs, it is characterized in that having on the described metab (18) platform (18d) of a plurality of installation chips, at least one light-emitting diode chip for backlight unit (17) is installed on each platform.
5, high efficient LED according to claim 4, it is characterized in that described at least one light-emitting diode chip for backlight unit (17) can be identical illuminant colour or different colors, thereby but the light-emitting diode, the colour temperature that can be made into different colors can be in harmonious proportion the white light emitting diode of high color rendering index (CRI), the color of emergent light increases the light-emitting diode of the look drift revisal that takes place with the operating time.
6, high efficient LED according to claim 1 and 2, it is characterized in that between described lens (19) and the chip (17), between lens (19) and the metab (18) just like the light transmission medium layer (24a, 25,30) of silica gel, resin or plastics.
7, high efficient LED according to claim 1, it is characterized in that described light-emitting diode also is furnished with a reflective optical system as paraboloidal reflector (32), allow described chip (17) be positioned on the described paraboloidal focus or near it, make from chip send, can be through the light of second portion curved surface (19b) outgoing of said lens through described reflector reflection directive the place ahead, thereby can obtain the emergent light of high light utilization efficiency, good optically focused; The light outgoing window (33) of described reflective optical system (32) can have a light-passing board, and it can be plate transparent, painted, diffusion, and the optical texture of a series of lenslets, little prism can be arranged on it.
8,, it is characterized in that described metab (18) has at least one and is used for light-emitting diode is fixed on fixed screw (29) or at least one screw hole that adds on the radiator (34) according to claim 3 or 4 or 6 described high efficient LEDs.
9, high efficient LED according to claim 8 is characterized in that the serve as reasons air-cooled radiator of the external air stream cooling that produces when allowing automobile advance of described radiator (34).
10, according to Claim 8 with 9 described high efficient LEDs, it is characterized in that by the photodistributed requirement of outgoing a plurality of light-emitting diodes (31) and reflective optical system (32) unit (36) that constitute, that be used for dazzle light, dipped headlights and light fixture being installed on the Different Plane of radiator (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100497903A CN1688029A (en) | 2005-05-09 | 2005-05-09 | High efficient LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100497903A CN1688029A (en) | 2005-05-09 | 2005-05-09 | High efficient LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1688029A true CN1688029A (en) | 2005-10-26 |
Family
ID=35306070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100497903A Pending CN1688029A (en) | 2005-05-09 | 2005-05-09 | High efficient LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1688029A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007099275A1 (en) * | 2006-02-28 | 2007-09-07 | Ghollam Tahmosybayat | Lens assembly |
| CN100582895C (en) * | 2006-10-19 | 2010-01-20 | 友达光电股份有限公司 | Backlight light source and light emitting device |
| US7762692B2 (en) | 2007-08-14 | 2010-07-27 | Foxsemicon Integrated Technology, Inc. | Surface mount light emitting diode assembly and backlight module using the same |
| CN101571259B (en) * | 2008-04-29 | 2011-04-27 | 浙江皓玥科技有限公司 | Led lens |
| CN105485597A (en) * | 2015-11-05 | 2016-04-13 | 格瑞电子（厦门）有限公司 | Headlamp based on LED and forming method of far and near light spots |
-
2005
- 2005-05-09 CN CNA2005100497903A patent/CN1688029A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007099275A1 (en) * | 2006-02-28 | 2007-09-07 | Ghollam Tahmosybayat | Lens assembly |
| US7810962B2 (en) | 2006-02-28 | 2010-10-12 | Ghollam Tahmosybayat | Lens assembly |
| CN100582895C (en) * | 2006-10-19 | 2010-01-20 | 友达光电股份有限公司 | Backlight light source and light emitting device |
| US7762692B2 (en) | 2007-08-14 | 2010-07-27 | Foxsemicon Integrated Technology, Inc. | Surface mount light emitting diode assembly and backlight module using the same |
| CN101571259B (en) * | 2008-04-29 | 2011-04-27 | 浙江皓玥科技有限公司 | Led lens |
| CN105485597A (en) * | 2015-11-05 | 2016-04-13 | 格瑞电子（厦门）有限公司 | Headlamp based on LED and forming method of far and near light spots |
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