CN103378277B - Lens and there is the package structure for LED of this kind of lens - Google Patents
Lens and there is the package structure for LED of this kind of lens Download PDFInfo
- Publication number
- CN103378277B CN103378277B CN201210117576.7A CN201210117576A CN103378277B CN 103378277 B CN103378277 B CN 103378277B CN 201210117576 A CN201210117576 A CN 201210117576A CN 103378277 B CN103378277 B CN 103378277B
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- China
- Prior art keywords
- out part
- light out
- lens
- light
- accepting groove
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Abstract
A kind of lens, comprise incidence surface and exiting surface, this exiting surface comprises the first light out part and is positioned at the second light out part of the first light out part periphery, and this first light out part is smooth arcwall face, and this second light out part is tubulose matsurface; This incidence surface comprises contact site, be positioned at contact site central authorities and to the accepting groove of exiting surface side depression and by the vacant portion be recessed to form to exiting surface side further bottom this accepting groove, the inner surface in described vacant portion is ellipsoid, interface place bottom described vacant portion and accepting groove forms circular open, between the semimajor axis length of described ellipsoid is 1.5 ~ 2.5 times of described circular open radius.The side direction that this kind of lens effectively can strengthen light-emitting diode chip for backlight unit goes out luminous intensity.The present invention also provides a kind of package structure for LED with this kind of lens.
Description
Technical field
The present invention relates to a kind of lens, particularly relate to a kind of lens strengthening the bright dipping of light-emitting diode side direction, the invention still further relates to a kind of package structure for LED with this kind of lens.
Background technology
Compared to traditional light emitting source, light-emitting diode (LightEmittingDiode, LED) there is the advantages such as lightweight, volume is little, it is low to pollute, the life-span is long, it is as a kind of novel light emitting source, be applied to more and more in the middle of each field, as street lamp, traffic lights, signal lamp, shot-light and decorative lamp etc.
Existing package structure for LED generally includes substrate, the electrode be positioned on substrate, be carried on substrate and the light-emitting diode chip for backlight unit be electrically connected with electrode and the packaging plastic of covering luminousing diode chip on substrate.But the rising angle due to light-emitting diode chip for backlight unit is approximately 120 degree, and the luminous intensity that goes out of light-emitting diode chip for backlight unit mainly concentrates the just right middle section of exiting surface, can not meet the particular/special requirement of side direction bright dipping.
Summary of the invention
In view of this, be necessary that providing a kind of strengthens the lens of light-emitting diode chip for backlight unit side direction bright dipping and have the package structure for LED of this kind of lens.
A kind of lens, comprise incidence surface and exiting surface, this exiting surface comprises the first light out part and is positioned at the second light out part of the first light out part periphery, and this first light out part is smooth arcwall face, and this second light out part is tubulose matsurface; This incidence surface comprises contact site, be positioned at contact site central authorities and to the accepting groove of exiting surface side depression and by the vacant portion be recessed to form to exiting surface side further bottom this accepting groove, the inner surface in described vacant portion is ellipsoid, interface place bottom described vacant portion and accepting groove forms circular open, between the semimajor axis length of described ellipsoid is 1.5 ~ 2.5 times of described circular open radius.
A kind of package structure for LED, comprise substrate, be arranged on the LED crystal particle on substrate, and be arranged on lens substrate also covering and establishes LED crystal particle, described lens comprise incidence surface and exiting surface, this exiting surface comprises the first light out part and is positioned at the second light out part of the first light out part periphery, this first light out part is smooth arcwall face, this second light out part is tubulose matsurface, this incidence surface comprises contact site, be positioned at contact site central authorities and the accepting groove caved in exiting surface side, and by the vacant portion be recessed to form to exiting surface side further bottom this accepting groove, , the inner surface in described vacant portion is ellipsoid, interface place bottom described vacant portion and accepting groove forms circular open, between the semimajor axis length of described ellipsoid is 1.5 ~ 2.5 times of described circular open radius, described contact site engages with substrate, in the light-emitting diode be arranged on substrate is housed in by described accepting groove.
When being applied in package structure for LED, these lens to be reflected the light that LED crystal particle sends by vacant portion inner surface and are added to the incidence angle of the light be incident upon on the first light out part, thus improve the first light out part to the total reflectivity of light to reflect some light to the second light out part, utilize the matsurface of the second light out part to reduce the total reflection probability of the light be incident on it simultaneously, and then effectively improve the side direction light exit dose of light-emitting diode, meet the particular/special requirement of side direction bright dipping.
With reference to the accompanying drawings, in conjunction with embodiment, the invention will be further described.
Accompanying drawing explanation
The structural representation of the lens that Fig. 1 provides for embodiment of the present invention.
The schematic diagram of the package structure for LED that Fig. 2 provides for embodiment of the present invention.
Main element symbol description
Lens 10
Exiting surface 11
First light out part 110
Second light out part 112
Groove 1120
Incidence surface 12
Contact site 120
Accepting groove 122
Vacant portion 124
Opening 1240
Package structure for LED 20
Substrate 21
LED crystal particle 22
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
The lens 10 that embodiment of the present invention provides comprise exiting surface 11 and incidence surface 12.
This exiting surface 11 comprises the first light out part 110 and is positioned at the second light out part 112 of the first light out part 110 periphery.This first light out part 110 is smooth arcwall face, and this second light out part 112 is tubulose matsurface.In the present embodiment, this second light out part 112 is formed with multiple groove 1120 around described first light out part 110 to form described matsurface, this kind of matsurface for destroying the total reflection condition of the light be incident on the second light out part 112, to improve the light outgoing efficiency of this second light out part 112.This groove can be v-depression or has the groove of other section shapes.In addition, the plurality of groove 1120 can be formed in the subregion of the second light out part 112, also can be covered with whole second light out part 112.For reaching comparatively high light-emitting efficiency, groove 1120 described in the present embodiment is covered with whole second light out part 112.
This incidence surface 12 comprises contact site 120, be positioned at contact site 120 central authorities and to exiting surface 11 side depression accepting groove 122 and by bottom this accepting groove 122 further to the vacant portion 124 that exiting surface 11 side is recessed to form.Described contact site 120 connects with the second light out part 112, and this contact site 120 is for contacting with the bearing part of follow-up support of lens 10.Described accepting groove 122 is for accommodating LED crystal particle.Described vacant portion 124 is for receiving the light from LED crystal particle, and a part for the light of directive first light out part 110 is carried out the incidence angle reflecting to be added to the light be incident upon on the first light out part 110, thus improve the total reflectivity of the first light out part 110 pairs of light.The light that first light out part 110 occurs total reflection will by reflection to the second light out part 112, because the second light out part 112 is matsurface, this matsurface effectively can reduce the total reflection probability of the light be incident on the second light out part 112, make the light that reflects via the first light out part 110 can outgoing and total reflection phenomenon no longer occurs smoothly when being incident to the second light out part 112, and then effectively improve the side direction light exit dose of light-emitting diode, meet the particular/special requirement of side direction bright dipping.
In the present embodiment, for reaching the effect strengthening side direction bright dipping preferably, the inner surface in described vacant portion 124 is set to ellipsoid, and the minor axis of this ellipsoid is positioned in plane residing bottom accepting groove 122, the plane orthogonal residing for bottom the major axis of this ellipsoid and accepting groove 122.Under this kind of facilities, ellipsoid has to be rectified the first light out part 110 compared with the major axis of deep camber, thus the longitudinal end of this ellipsoid effectively can increase the incidence angle via being incident to the light on the first light out part 110 after ellipsoid refraction, and then improve the probability that the first light out part 110 pairs of light carry out total reflection, the light of part script directive first light out part 110 can be reflected to the second light out part 112, to promote the amount of light of the second light out part 112.Accordingly, ellipsoid has to be rectified the second light out part 112 compared with the minor axis of small curve, make the incidence angle of light when arrival the second light out part 112 originally with regard to directive second light out part 112 less, thus guarantee the light of directive second light out part 112 originally can avoid as far as possible total reflection phenomenon generation and smoothly via the second light out part 112 outgoing.
Described vacant portion 124 forms circular open 1240 with the interface place bottom accepting groove 122.Further, for reaching optimum efficiency, between 1.5 ~ 2.5 times that also the semimajor axis length L of described ellipsoid can be arranged on described circular open 1240 radius R, also be 1.5R≤L≤2.5R, this kind of situation is arranged down, the light of LED crystal particle effectively can be directed at side direction, make the luminous intensity of side direction bright dipping be 2 ~ 10 times of forward bright dipping.
Refer to Fig. 2, the embodiment of the present invention also provides a kind of package structure for LED 20 with said lens 10.This package structure for LED 20 comprises substrate 21, arranges LED crystal particle 22 on the base plate (21 and arrange the lens 10 also covering on the base plate (21 and establish LED crystal particle 22.
Described substrate 21 carries lens 10, and the contact site 120 of described lens 10 engages with substrate 21, in the LED crystal particle 22 be arranged on substrate 21 is housed in by described accepting groove 122.
In the present embodiment, the end face of described LED crystal particle 22 flushes with the bottom of accepting groove 122.Thus, make LED crystal particle 22 just to the vacant portion 124 bottom accepting groove 122.
It should be noted that, when described groove 1120 is covered with whole second light out part 112, this groove 1120 can follow first light out part 110 adjacent with the second light out part 112 respectively, contact site 120 connects, to improve the light extraction efficiency of whole second light out part 112.Can be that routing is connected about the electrical connection between substrate 21 with LED crystal particle 22 in this embodiment, chip package etc.In addition, the present embodiment only for illustration of lens 10 structure and lens 10 and the matching relationship of LED crystal particle 22, about other encapsulating structures of light-emitting diode, does not repeat them here.
Be understandable that, for the person of ordinary skill of the art, other various corresponding change and distortion can be made by technical conceive according to the present invention, and all these change the protection range that all should belong to the claims in the present invention with distortion.
Claims (7)
1. lens, comprise incidence surface and exiting surface, it is characterized in that: this exiting surface comprises the first light out part and is positioned at the second light out part of the first light out part periphery, and this first light out part is smooth arcwall face, and this second light out part is tubulose matsurface; This incidence surface comprises contact site, be positioned at contact site central authorities and to the accepting groove of exiting surface side depression and by the vacant portion be recessed to form to exiting surface side further bottom this accepting groove, the inner surface in described vacant portion is ellipsoid, interface place bottom described vacant portion and accepting groove forms circular open, between the semimajor axis length of described ellipsoid is 1.5 ~ 2.5 times of described circular open radius.
2. lens as claimed in claim 1, is characterized in that, the minor axis of this ellipsoid is positioned in plane residing bottom accepting groove, the plane orthogonal residing for bottom the major axis of this ellipsoid and accepting groove.
3. lens as claimed in claim 1, it is characterized in that, described exiting surface connects with the contact site of incidence surface via the second light out part.
4. lens as claimed in claim 1, it is characterized in that, described second light out part is formed with multiple groove around described first light out part, the plurality of groove is covered with whole second light out part.
5. a package structure for LED, comprise substrate, be arranged on the LED crystal particle on substrate, and be arranged on lens substrate also covering and establishes LED crystal particle, it is characterized in that: described lens comprise incidence surface and exiting surface, this exiting surface comprises the first light out part and is positioned at the second light out part of the first light out part periphery, this first light out part is smooth arcwall face, this second light out part is tubulose matsurface, this incidence surface comprises contact site, be positioned at contact site central authorities and the accepting groove caved in exiting surface side, and by the vacant portion be recessed to form to exiting surface side further bottom this accepting groove, the inner surface in described vacant portion is ellipsoid, interface place bottom described vacant portion and accepting groove forms circular open, between the semimajor axis length of described ellipsoid is 1.5 ~ 2.5 times of described circular open radius, described contact site engages with substrate, in the light-emitting diode be arranged on substrate is housed in by described accepting groove.
6. package structure for LED as claimed in claim 5, it is characterized in that, the end face of described LED crystal particle flushes with bottom accepting groove, the minor axis of this ellipsoid is positioned in the plane residing for LED crystal particle end face, the major axis of this ellipsoid and the plane orthogonal residing for LED crystal particle end face.
7. package structure for LED as claimed in claim 5, it is characterized in that, described second light out part is formed with multiple groove around described first light out part, the plurality of groove is covered with whole second light out part.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210117576.7A CN103378277B (en) | 2012-04-20 | 2012-04-20 | Lens and there is the package structure for LED of this kind of lens |
| TW101118802A TWI478401B (en) | 2012-04-20 | 2012-05-25 | Lens and led package having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210117576.7A CN103378277B (en) | 2012-04-20 | 2012-04-20 | Lens and there is the package structure for LED of this kind of lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103378277A CN103378277A (en) | 2013-10-30 |
| CN103378277B true CN103378277B (en) | 2015-11-18 |
Family
ID=49463105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210117576.7A Expired - Fee Related CN103378277B (en) | 2012-04-20 | 2012-04-20 | Lens and there is the package structure for LED of this kind of lens |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103378277B (en) |
| TW (1) | TWI478401B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159059A (en) * | 2015-04-13 | 2016-11-23 | 弘凯光电(深圳)有限公司 | LED encapsulation structure and manufacture method thereof |
| KR102374202B1 (en) * | 2015-05-26 | 2022-03-14 | 쑤저우 레킨 세미컨덕터 컴퍼니 리미티드 | Optical lens, light emitting module and light unit having thereof |
| CN106523980B (en) * | 2015-09-11 | 2020-09-25 | 上海三思电子工程有限公司 | LED signal lamp |
| CN106524079A (en) * | 2015-09-11 | 2017-03-22 | 上海三思电子工程有限公司 | Lens and LED lamp using same |
| TWI626771B (en) * | 2016-07-26 | 2018-06-11 | 宏齊科技股份有限公司 | Light emitting diode unit and slim planar light source module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US563836A (en) * | 1896-07-14 | blondel | ||
| TW200923248A (en) * | 2007-10-11 | 2009-06-01 | Kuraray Co | Array of planar light source elements |
| CN102022690A (en) * | 2009-09-11 | 2011-04-20 | 玉晶光电股份有限公司 | Optical lens |
| CN102410490A (en) * | 2010-09-21 | 2012-04-11 | 富士迈半导体精密工业（上海）有限公司 | Lens and light source module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011023204A (en) * | 2009-07-15 | 2011-02-03 | Sharp Corp | Light-emitting device, luminous flux control member, and lighting device having light-emitting device |
-
2012
- 2012-04-20 CN CN201210117576.7A patent/CN103378277B/en not_active Expired - Fee Related
- 2012-05-25 TW TW101118802A patent/TWI478401B/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US563836A (en) * | 1896-07-14 | blondel | ||
| TW200923248A (en) * | 2007-10-11 | 2009-06-01 | Kuraray Co | Array of planar light source elements |
| CN102022690A (en) * | 2009-09-11 | 2011-04-20 | 玉晶光电股份有限公司 | Optical lens |
| CN102410490A (en) * | 2010-09-21 | 2012-04-11 | 富士迈半导体精密工业（上海）有限公司 | Lens and light source module |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201345002A (en) | 2013-11-01 |
| CN103378277A (en) | 2013-10-30 |
| TWI478401B (en) | 2015-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20200420 |