CN207501082U - A kind of LED lens and light-emitting device - Google Patents
A kind of LED lens and light-emitting device Download PDFInfo
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- CN207501082U CN207501082U CN201721489665.9U CN201721489665U CN207501082U CN 207501082 U CN207501082 U CN 207501082U CN 201721489665 U CN201721489665 U CN 201721489665U CN 207501082 U CN207501082 U CN 207501082U
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Abstract
The utility model embodiment discloses a kind of LED lens and light-emitting device, including：Lens body, the lens body include light-emitting surface and incidence surface, and the light-emitting surface includes multiple plane curved surfaces and spherical surface, and the plane curved surface and spherical surface are sequentially connected, and at least one plane curved surface and spherical surface formation are ranked sequentially.By the above-mentioned means, the utility model embodiment can be adjusted local hot spot brightness using fresnel diffraction principle, improve the bright dark distribution situation of hot spot.
Description
Technical field
The utility model embodiment is related to lens art, more particularly to a kind of LED lens and light-emitting device.
Background technology
Light emitting diode (Light-Emitting Diode, LED) is a kind of semiconductor that can convert electrical energy into luminous energy
Electronic component, is developed to send out by the feux rouges that can only send out low luminosity of early stage and spreads all over visible ray, infrared light, ultraviolet today
The high luminosity light of light, the continuous development of LED technology so that the application of LED can only be used as the hairs such as indicator light, display board by initial
It opens up and is used as lamps for vehicle, liquid crystal screen backlight, lamp decoration, lighting source etc. extensively, application field is more extensive.
With the continuous expansion of LED application fields, different field is to the illumination mode of LED, luminous efficiency, lighting effect etc.
It is required that having nothing in common with each other, in order to adapt to different application scene, need to carry out LED optical design, common mode is i.e. to LED lens
Carry out structure design so that the light of LED chip outgoing by the refraction of lens, reflection or can dissipate after LED lens
It penetrates etc. and to shine and reach target luminous efficiency and lighting effect in a targeted way, including adjusting spot size, light spot shape and bright
Spend distribution situation etc..
At present, common LED lens for applying to TV backlights are mostly the smooth spherical lens in surface on the market, it is difficult to right
Local hot spot brightness is adjusted.
Utility model content
The utility model embodiment, can mainly solving the technical problems that provide a kind of LED lens and light-emitting device
Local hot spot brightness is adjusted using fresnel diffraction principle, improves the bright dark distribution situation of hot spot.
In order to solve the above technical problems, the technical solution that the utility model uses is：A kind of LED lens are provided, are wrapped
It includes：
Lens body, the lens body include light-emitting surface and incidence surface, the light-emitting surface include multiple plane curved surfaces and
Spherical surface, the plane curved surface and spherical surface are sequentially connected, and at least one plane curved surface and spherical surface formation are ranked sequentially.
Optionally, the plane curved surface of the light-emitting surface is of same size.
Optionally, the width range of the plane curved surface is 0.1mm-0.3mm.
Optionally, the width of the plane curved surface is 0.19mm.
Optionally, the plane curved surface width of the light-emitting surface differs.
Optionally, the width range of the plane curved surface is 0.1mm-0.2mm.
Optionally, the sphere width of the light-emitting surface is equal.
Optionally, the width range of the spherical surface is 0.01mm-0.2mm.
Optionally, the width of the spherical surface is 0.06mm.
In order to solve the above technical problems, another technical solution that the utility model uses is：A kind of light-emitting device is provided,
Including：
Housing and the LED chip being set on housing, further include above-described LED lens, the LED lens pass through column
Foot is fixed on the housing so that the LED chip is just contained in host cavity and center overlapping of axles.
The advantageous effect of the utility model embodiment is：It is different from the situation of the prior art, the utility model embodiment party
Formula provides a kind of LED lens and light-emitting device, including：Lens body, the lens body includes light-emitting surface and incidence surface, described
Light-emitting surface includes multiple plane curved surfaces and spherical surface, and the plane curved surface and spherical surface are sequentially connected, and at least one plane
Curved surface and spherical surface formation are ranked sequentially.LED lens described in the utility model, being sequentially connected by plane curved surface and spherical surface will go out
Smooth surface is equivalent to fresnel diffraction face, and local hot spot brightness is adjusted using fresnel diffraction principle, and it is bright dark to improve hot spot
Distribution situation.
Description of the drawings
One or more embodiments are illustrated by corresponding attached drawing, these exemplary illustrations not structure
The restriction of pairs of embodiment, the element for having same reference numbers label in attached drawing is expressed as similar element, unless there are special
It declares, composition does not limit the figure in attached drawing.
Fig. 1 is the cross-sectional view of a kind of light-emitting device that another embodiment of the utility model provides；
Fig. 2 is a kind of structure diagram for LED lens that the utility model embodiment provides；
Fig. 3 is the front view of LED lens shown in Fig. 2；
Fig. 4 is the side view of LED lens shown in Fig. 2；
Fig. 5 is the vertical view of LED lens shown in Fig. 2；
Fig. 6 is the bottom view of LED lens shown in Fig. 2；
Fig. 7 is the sectional view of LED lens shown in Fig. 2；
Fig. 8 is a kind of cross-sectional view of embodiment of the utility model；
Fig. 9 is the cross-sectional view of the utility model another embodiment.
Referring to Fig. 1 to Fig. 9,1 is light-emitting device, and 10 be LED lens, and 20 be housing, and 30 be LED chip, and 111 be suspension column,
12 be lens body, and 121 be light-emitting surface, and 122 be host cavity, and 123 be incidence surface.
Specific embodiment
For the ease of understanding the utility model, with reference to the accompanying drawings and detailed description, the utility model is carried out more
Detailed description.It should be noted that when element is expressed " being fixed on " another element, it can be directly in another element
Above or therebetween there may be one or more elements placed in the middle.When an element is expressed " connection " another element, it can
To be directly to another element or there may be one or more elements placed in the middle therebetween.This specification is used
Term " vertical ", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, the skill of technical and scientific term all used in this specification with belonging to the utility model
The normally understood meaning of technical staff in art field is identical.In the art used in the description of the utility model in this specification
Language is intended merely to the purpose of description specific embodiment, is not intended to limitation the utility model.Art used in this specification
Language "and/or" includes the arbitrary and all combination of one or more relevant Listed Items.
Referring to Fig. 1, a kind of cross-section structure of light-emitting device signal that Fig. 1, which is another embodiment of the utility model, to be provided
Figure, a kind of light-emitting device 1, including：Housing 20, LED chip 30 and LED lens 10.The LED chip 30 is set to the housing
The LED chip 30 generally by way of scolding tin is fixed and completes to be electrically connected by 20 upper surface.In the LED core
30 top of piece covers LED lens 10 so that the LED chip 30 is just contained in the host cavity 122 of LED lens 10, and LED
30 center overlapping of axles of lens 10 and LED chip.Further, the LED lens 10 are consolidated by suspension column 111 and housing 20
It is fixed, can be fixed by way of grafting, alternatively, be fixed by way of buckle and etc..
The light-emitting device 1 can be used as TV (Television, abbreviation TV) backlight, can realize to local hot spot
Brightness adjustment improves the bright dark distribution situation of hot spot, obtains the circle row hot spot that Luminance Distribution is uniformly slowly weakened around by center,
Improve the result of broadcast of TV.
Fig. 2 to Fig. 9 is please referred to, Fig. 2 is a kind of structure diagram for LED lens that the utility model embodiment provides,
A kind of LED lens 10, including：Lens body 12.
The lens body 12 includes light-emitting surface 121 and incidence surface 123, and the lateral surface of the lens body 12 forms light extraction
Face 121 sets recess at 121 center of light-emitting surface, which is located at the top center of the lens body 12, and concave point is located at
On the central shaft of LED lens 10, and the recess side is the structure being bent to lens body 12, for being emitted LED core
The direct projection light that piece 30 is sent out, enhancing middle part hot spot brightness.
The light-emitting surface 121 further includes multiple plane curved surfaces and spherical surface, and the plane curved surface and spherical surface are sequentially connected, and
At least one plane curved surface and spherical surface formation are ranked sequentially, specially：As shown in Figure 8 and Figure 9, to pass through LED with one
The plane of 10 central shaft of lens splits the 10 obtained sectional view of LED lens vertically, wherein, A is one of Plane Curved
The section profile line in face, B are the section profile line of one of spherical surface, it can be seen that section profile line one end of the spherical surface
The section profile line of the first plane curved surface is connected, the other end connects the second plane curved surface adjacent with the first plane curved surface
Section profile line, the section profile line of the second plane curved surface are located above the section profile line of the first plane curved surface,
And the section profile line lower extreme point of the second plane curved surface is located at the section profile line upper extreme point of the first plane curved surface
Top, the section profile line of the spherical surface are located at the section profile line of the first plane curved surface and the second plane curved surface
On line, the section profile of the section profile line of the first plane curved surface, the section profile line of spherical surface and the second plane curved surface
Line approximation on one face, and is sequentially connected with according to the first plane curved surface, spherical surface and the second plane curved surface, formation sequence
Arrangement.The light-emitting surface 121 is gradually reduced along 12 bottom of lens body to the direction that is recessed, wherein, the spherical equivalent slit, phase
Plane curved surface between adjacent spherical surface then equivalent slits spacing, i.e., be equivalent to fresnel diffraction face so that described by the light-emitting surface 121
LED lens 10 can carry out space periodicity modulation using fresnel diffraction principle to the amplitude of incident light, that is, adjust local light
The brightness of spot regularly changes the bright dark distribution situation of hot spot.
Wherein, each spherical surface is surrounded by the camber line of identical arc length around the center axis rotation of LED lens 10, and sphere width is
The center axis rotation around LED lens 10 surrounds the arc length of the camber line of spherical surface, therefore every on 10 light-emitting surface 121 of LED lens
A sphere width is equal, and the sphere width ranging from 0.01mm-0.2mm in the range, is adapted to any height and size
LED chip can have apparent diffracting effect, the brightness of local hot spot can be adjusted, wherein, preferred value is
0.06mm, at this point, the slit diffraction effect of spherical equivalent is best, that is, the effect for improving the bright dark distribution situation of hot spot is best.
And the plane curved surface is spliced by central axis of many slight flats around LED lens 10, it is described
The shape that plane curved surface surrounds can be approximately round, and the round direction that is extremely recessed along 12 bottom of lens body is gradually reduced,
For reflecting the light of the outgoing of incidence surface 123, change the situation that fresnel diffraction hot spot is light and dark annulus.Each plane
Curved surface is angularly set, i.e., described plane curved surface is identical with the angle of 10 central shaft of LED lens；Further, each Plane Curved
The width in face is equal or unequal, wherein, the width of plane curved surface is defined as：Several slight flats for being spliced into plane curved surface exist
Plane curved surface and spherical surface are ranked sequentially the length on direction, because of the plane curved surface equivalent slits spacing, plane curved surface
Widths affect LED lens 10 whole hot spot light and shade distribution situation, if for example, slit spacing is larger, the hot spot of adjacent slots
Lap is less, then hot spot brightness is opposite can be slightly dark；If slit spacing is smaller, the hot spot lap of adjacent slots can increase
More, therefore, hot spot brightness can then brighten accordingly.The utility model is exactly the tune realized according to the principle to local hot spot brightness
It is whole to improve the bright dark distribution situation of hot spot.
As shown in figure 8, when each plane curved surface width is unequal, the equivalent fresnel diffraction face of the light-emitting surface 121
Slit is not wide equidistant, at this point, the width range of the plane curved surface is 0.1mm-0.2mm, in different position settings not
With the slit of spacing, the emitting brightness of different location can be changed, for example, hot spot is equivalent to targets for arrow, middle part is 10 ring positions,
Secondary position is 6 ring positions, and periphery is 2 ring positions, meanwhile, the light-emitting surface 121 of LED lens 10 is also equivalent to targets for arrow, intermediate recess
Locate as 10 ring positions, the epimere in fresnel diffraction face is 6 ring positions, and hypomere is 2 ring positions, is corresponded with hot spot, when 6 ring positions
The hot spot put is excessively bright, then can carry out the bright of local directed complete set hot spot by adjusting the slit spacing in the fresnel diffraction face of 6 ring positions
Degree realizes the adjustment to local hot spot brightness, improves the bright dark distribution situation of hot spot.
As shown in figure 9, when each plane curved surface width is equal, the equivalent fresnel diffraction face of the light-emitting surface 121 is narrow
Stitch it is wide equidistantly, at this point, the width range of the plane curved surface be 0.1mm-0.3mm, wherein preferred value be 0.19mm, the width
It is preferable hot spot --- the circle that Luminance Distribution is uniformly slowly weakened around by center to spend obtained hot spot.
Host cavity 122 is opened up in 12 bottom of lens body, 122 cross section of host cavity is circle, and is set to
At 12 bottom centre of lens body.The 122 upper end shape of host cavity is bullet-headed, top and the recess of light-emitting surface 121
It is corresponding, and on the central shaft of LED lens 10, i.e., described host cavity 122 and the 121 recess central shaft weight of light-emitting surface
It closes.122 side wall of host cavity is incidence surface 123, which is free curvature surface, at this point, 123 top of incidence surface is with going out
121 recess of smooth surface corresponds to so that the direct projection light that LED chip 30 is emitted is emitted to light-emitting surface 121 from 123 top of incidence surface
Recess, and be emitted through 121 recess of light-emitting surface, the incidence surface 123 that bullet-headed host cavity 122 is formed then increases light extraction
121 receiving area of face increases hot spot.
It, can also be by facing light in the different line of 12 floor design of lens body in some alternative embodiments
Secondary reflection is carried out, the line face ring sets around host cavity 122, improves the utilization rate of light, that is, improve light efficiency.
Suspension column 111 is set in 12 surrounding of lens body, 111 quantity of suspension column is 3, around lens body 12 in triangle point
Cloth so that the LED lens 10 can be fixed on the housing 20 of light-emitting device 1.Certainly, in some alternative embodiments
In, the quantity of the suspension column 111 can be also set as according to actual conditions 4,2 and etc..
The advantageous effect of the utility model embodiment is：It is different from the situation of the prior art, the utility model embodiment party
Formula provides a kind of LED lens and light-emitting device, including：Lens body, the lens body includes light-emitting surface and incidence surface, described
Light-emitting surface includes multiple plane curved surfaces and spherical surface, and the plane curved surface and spherical surface are sequentially connected, and at least one plane
Curved surface and spherical surface formation are ranked sequentially.LED lens described in the utility model, being sequentially connected by plane curved surface and spherical surface will go out
Smooth surface is equivalent to fresnel diffraction face, and local hot spot brightness is adjusted using fresnel diffraction principle, and it is bright dark to improve hot spot
Distribution situation.
It should be noted that the preferable implementation of the utility model is given in the specification and its attached drawing of the utility model
Mode, still, the utility model can be realized by many different forms, however it is not limited to the described implementation of this specification
Mode, these embodiments are not as the additional limitation to the utility model content, the purpose of providing these embodiments is that making
To the understanding more thorough and comprehensive of the disclosure of the utility model.Also, above-mentioned each technical characteristic continues to be combined with each other, and is formed
The various embodiments not being enumerated above are accordingly to be regarded as the range of the utility model specification record；Further, to this field
For those of ordinary skill, it can be improved or converted according to the above description, and all these modifications and variations should all belong to
The protection domain of the appended claims for the utility model.
Claims (10)
1. a kind of LED lens, including lens body (12), the lens body (12) includes light-emitting surface (121) and incidence surface
(123), which is characterized in that the light-emitting surface (121) includes multiple plane curved surfaces and spherical surface, and the plane curved surface and spherical surface are successively
Connection, and at least one plane curved surface and spherical surface formation are ranked sequentially.
2. LED lens according to claim 1, which is characterized in that the plane curved surface width phase of the light-emitting surface (121)
Together.
3. LED lens according to claim 2, which is characterized in that the width range of the plane curved surface is 0.1mm-
0.3mm。
4. LED lens according to claim 2, which is characterized in that the width of the plane curved surface is 0.19mm.
5. LED lens according to claim 1, which is characterized in that the plane curved surface width of the light-emitting surface (121) not phase
Together.
6. LED lens according to claim 5, which is characterized in that the width range of the plane curved surface is 0.1mm-
0.2mm。
7. LED lens according to claim 1, which is characterized in that the sphere width of the light-emitting surface (121) is equal.
8. LED lens according to claim 7, which is characterized in that the width range of the spherical surface is 0.01mm-0.2mm.
9. LED lens according to claim 7, which is characterized in that the width of the spherical surface is 0.06mm.
10. a kind of light-emitting device, including housing (20) and the LED chip (30) being set on housing (20), which is characterized in that also
Including claim 1-9 any one of them LED lens (10), the LED lens (10) are fixed on described by suspension column (111)
On housing (20) so that the LED chip (30) is just contained in host cavity (122) and center overlapping of axles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721489665.9U CN207501082U (en) | 2017-11-08 | 2017-11-08 | A kind of LED lens and light-emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721489665.9U CN207501082U (en) | 2017-11-08 | 2017-11-08 | A kind of LED lens and light-emitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207501082U true CN207501082U (en) | 2018-06-15 |
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ID=62503821
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721489665.9U Active CN207501082U (en) | 2017-11-08 | 2017-11-08 | A kind of LED lens and light-emitting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207501082U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888188A (en) * | 2018-09-07 | 2020-03-17 | 深圳市聚飞光电股份有限公司 | Optical lens and light-emitting device thereof |
| CN110887021A (en) * | 2018-09-07 | 2020-03-17 | 深圳市聚飞光电股份有限公司 | Optical lens and light-emitting device thereof |
-
2017
- 2017-11-08 CN CN201721489665.9U patent/CN207501082U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888188A (en) * | 2018-09-07 | 2020-03-17 | 深圳市聚飞光电股份有限公司 | Optical lens and light-emitting device thereof |
| CN110887021A (en) * | 2018-09-07 | 2020-03-17 | 深圳市聚飞光电股份有限公司 | Optical lens and light-emitting device thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518107 Derun Electronic Industrial Park, 269 Huitong Road, Fenghuang street, Guangming District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Deren Electronic Co., Ltd. Address before: 518107, Guangdong province Shenzhen Guangming New District Guangming Street, No. thirty-three Road, 9 Electronic Industrial Park run Patentee before: Shenzhen Deren Electronic Co., Ltd. |