CN207796574U - A kind of great power LED low-angle lens - Google Patents
A kind of great power LED low-angle lens Download PDFInfo
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- CN207796574U CN207796574U CN201721641123.9U CN201721641123U CN207796574U CN 207796574 U CN207796574 U CN 207796574U CN 201721641123 U CN201721641123 U CN 201721641123U CN 207796574 U CN207796574 U CN 207796574U
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Abstract
The utility model discloses a kind of great power LED low-angle lens, the lens include lens body, the lens body bottom has LED accommodating cavities, the lens body includes the fully reflecting surface of side and the arc-shaped concave at top, the arc-shaped concave bottom is provided with free form surface, and conical refraction portion is provided at the top of the LED accommodating cavities.LED light source emits beam in LED accommodating cavities bottom, after the reflection of the fully reflecting surface of lens body side and the projection in conical refraction portion, light projects away using after the even smooth colour mixture processing of free form surface optically focused and arc-shaped concave as collimated light beam, the low-angle light beam less than 10 ° can be achieved under conventional lenses appearance and size to project, with good even smooth color blending effect, LED outdoor project lamps, amusement pa lamp, wall lamp, matrix lamp etc. can be widely applied to.
Description
Technical field
The utility model belongs to technical field of LED illumination, is related to a kind of LED lens, relates in particular to a kind of high-power
LED low-angle lens.
Background technology
As incandescent lamp eliminates the implementation of plan, LED illumination is gradually gained popularity, compared with traditional lighting, LED illumination tool
There are significant energy-saving and environmental protection and long-life advantage, use is more long, and year-on-year incandescent lamp or energy-saving lamp are more energy saving, therefore LED illumination is
It is widely used in the lighting areas such as market, hotel, hospital, road, construction landscape, light of stage.
Stage entertains light, outdoor scene illumination class lamps and lanterns since required power is larger, to realize that this great power LED shines
It is bright, it is primarily present at present and single high-power LED chip is packaged or uses two kinds of technologies of multi-chip integration packaging, for preceding
Person, powerful realization are often limited by chip size, and integration packaging then has greater flexibility, therefore adopt more
With high-power more color LED integrated packaging power sources.LED integration packagings are also referred to as polycrystalline encapsulation, will not according to the size of required power
LED chip assembled package with number is in substrate pedestal, and chip can be designed as serial or parallel connection by this packaged type, with flexible
Ground is applicable in different voltage and currents, while it is with higher cost performance, be increasingly becoming LED encapsulation main flow direction it
One.
Since there are multiple chips in integrated encapsulation structure, each chip light-emitting angle is different, needs in primary optical design
On the basis of carry out secondary optical design to meet the needs of users, the purpose of primary optical design is extraction as much as possible
The purpose of the light that LED chip is sent out, secondary optical design is then that the light for making entire lamp system send out meets design requirement.
In secondary optical design, LED lens are a kind of important tools, and what use was more is traditional male model lens on the market, though
Light extraction can so be improved to a certain degree, but there are the performance of low-angle colour mixture is poor, low-angle light beam projects the even light of colour mixture and not enough fills
Point, poor to high-power high light intensity output LED high-temperature adaptabilities, high power light source near field temperature is excessively high easily to be caused to scald to incidence surface
The problems such as hindering, in addition its appearance and modeling is also not beautiful enough, it is difficult to meet the needs of quick and various and personalized in the market.
Utility model content
For this purpose, the utility model exactly will solve above-mentioned technical problem, to propose that it is mixed that one kind improving low-angle light beam
Color effect prevents LED light source scald lens incidence surface, solves the problems, such as that lens appearance is difficult to the big work(taken into account with optical property
Rate LED low-angle lens.
In order to solve the above technical problems, the technical solution of the utility model is：
The utility model provides a kind of great power LED low-angle lens, and the lens include lens body, the lens
Body bottom portion has LED accommodating cavities, and the lens body includes the fully reflecting surface of side and the arc-shaped concave at top, the arc
Concave bottom is provided with free form surface, and conical refraction portion is provided at the top of the LED accommodating cavities.
Preferably, the arc-shaped concave is made of fly eye lens array arrangement.
Preferably, along the direction by lens body bottom to top, lens sizes in the fly eye lens array and
Radius of curvature gradually increases, and the fly's-eye lens is rectangular fly's-eye lens.
Preferably, the radius of curvature of the fly's-eye lens is 2.51-7.16.
Preferably, the radius of curvature of the arc-shaped concave is 30-70.
Preferably, the accommodating cavity bottom is light inlet, the light inlet diameter is not less than 10mm；The LED is accommodating
Bottom of chamber portion is provided with LED light source, and the light-emitting surface of the LED light source is not less than 8mm with conical refraction portion top surface spacing.
Preferably, the fully reflecting surface is inner total reflection face, the lens body shape that the fully reflecting surface encloses
For circular cone shape, frustum of a cone lens body top surface diameter is more than basal diameter.
Preferably, the incidence surface in the conical refraction portion is frosting, the light-emitting surface of the free form surface is frosting.
Preferably, the rectangular fly eye lens array is made of 2000 lens, the contour line formed is hyperbola.
Preferably, the base angle in the conical refraction portion is 120 °.
The above-mentioned technical proposal of the utility model has the following advantages compared with prior art：
(1) great power LED described in the utility model low-angle lens, the lens include lens body, described
Mirror body bottom portion has LED accommodating cavities, and the lens body includes the fully reflecting surface of side and the arc-shaped concave at top, the arc
Shape concave bottom is provided with free form surface, and conical refraction portion is provided at the top of the LED accommodating cavities.LED light source is in LED accommodating cavities
Bottom emits beam, after the reflection of the fully reflecting surface of lens body side and the projection in conical refraction portion, light using
It is projected away as collimated light beam after the even smooth colour mixture processing of free form surface optically focused and arc-shaped concave, in conventional lenses appearance and size
The lower low-angle light beam that can be achieved less than 10 ° projects, and has good even smooth color blending effect, can be widely applied to the throwing of the open airs LED
Light lamp, amusement pa lamp, wall lamp, matrix lamp etc..
(2) great power LED described in the utility model low-angle lens, the arc-shaped concave are arranged by fly eye lens array
Cloth forms.The arc-shaped concave is the light-emitting surface of lens, is arranged in a combination by 2000 rectangular fly eye lens array, is formed
Plaited surface light-emitting surface has more preferably color blending effect than conventional lenses, while also having beautiful external form, has both excellent optics effect
Fruit and aesthetic characteristic.
(3) great power LED described in the utility model low-angle lens, the accommodating cavity bottom is light inlet, described
Light inlet diameter is not less than 10mm；LED accommodating cavities bottom is provided with LED light source, the light-emitting surface of the LED light source with it is described
Conical refraction portion top surface spacing is not less than 8mm.Widening Design has been carried out to lens incidence surface, LED accommodating cavities have been deepened
Design, the problem of causing to scald to lens to prevent high-power LED light source temperature excessively high so that the lens can be adapted to 5-
The multi-color LED light source of arbitrary power between 50W.
Description of the drawings
In order to make the content of the utility model be more likely to be clearly understood, below according to the specific implementation of the utility model
Example and in conjunction with attached drawing, the utility model is described in further detail, wherein
Fig. 1 is the diagrammatic cross-section of the great power LED low-angle lens described in the utility model embodiment；
Fig. 2 is the structural schematic diagram of the great power LED low-angle lens described in the utility model embodiment；
Fig. 3 is the curvature of great power LED row fly's-eye lens in low-angle lens described in the utility model embodiment
Radius distribution figure.
Reference numeral is expressed as in figure：1-LED accommodating cavities；2-LED light sources；3- fully reflecting surfaces；4- arc-shaped concaves；5- circular cones
Refraction part；6- free form surfaces；7- fly's-eye lenses.
The utility model can be implemented with many different forms, should not be construed as limited to embodiment set forth herein,
On the contrary, providing these embodiments so that the disclosure is thorough and complete, and the design of the utility model is fully conveyed to this
Field technology personnel, the utility model will be defined by the claims.In the accompanying drawings, for clarity, each device can be exaggerated
Size and relative size.
Specific implementation mode
Embodiment
The present embodiment provides a kind of great power LED low-angle lens, with shape similar with similar lens and
It can be achieved to be less than 10 ° of beam angles projections under size condition, there is excellent even smooth color blending effect.The lens are as shown in Figs. 1-2,
Including lens body, the lens body is circular cone shape shape, and bottom has a LED accommodating cavities 1, institute in the lens body
It states 1 bottom of LED accommodating cavities and is provided with LED light source 2, the LED light source 2 is that how photochromic LED chip integrated optical source may be list
Color LED light source.
The lens body includes the fully reflecting surface 3 for being located at the side, the arc-shaped concave 4 and LED accommodating cavities 1 at top
The conical refraction portion 5 at top, 4 bottom of the arc-shaped concave are additionally provided with a free form surface 6, and the free form surface 6 is towards described
The one side of arc-shaped concave 4 is crowning, and above structure is integrally formed.Wherein, the fully reflecting surface 3 is synthetic into lens body
Side wall, and form the lens-shape of the frustum of a cone, the top surface diameter of frustum of a cone lens body is more than basal diameter, the total reflection
Face 3 is inner total reflection face (TIR fully reflecting surfaces), and it is fully reflective and be transmitted to that the light that LED light source 2 is sent out can be totally reflected face 3
Arc-shaped concave 4 and conical refraction portion 5.
The arc-shaped concave 4 is to be composed of to the recessed curved surface of lens interior 7 array arrangement of fly's-eye lens, this implementation
In example, the fly's-eye lens 7 is rectangular fly's-eye lens, and quantity is 2000, is arranged as fly eye lens array, and along by saturating
The mirror body bottom portion side of LED light source 2 (setting) is to the direction at top, the size and song of fly's-eye lens 7 in fly eye lens array
Rate radius gradually increases, and the radius of curvature R of fly's-eye lens 7 is 2.51-7.16, in the present embodiment, rectangular fly eye lens array by
Under supreme Curvature varying it is as shown in Figure 3.The fly's-eye lens 7 can complete the collection to light, and by adjusting fly's-eye lens 7
Radius of curvature realize control to beam exit angle, in the present embodiment, each lenticule from the bottom to top in single-row fly's-eye lens 7
Radius of curvature and appearance and size be incremented by step by step, the focal length value of each fly's-eye lens 7 and focal power are also inconsistent in a row, can be right
LED beam containing multi-wavelength carries out even light compensation to achieve the effect that the abundant mixed light of more colors.It is made of fly's-eye lens 7
The radius of curvature R of arc-shaped concave 4 is 30-70, is preferably 55 in the present embodiment, this is because radius of curvature is too small to lead to light
Refraction angle is difficult to control so that lens angle increases, and radius of curvature is excessive to make lens thickness uneven again close to plane
It is even, and increase the weight of lens.
1 bottom of LED accommodating cavities is provided with LED light source 2 in the lens body so that 1 bottom of accommodating cavity is light inlet, institute
The diameter for stating light inlet is not less than 10mm, and the LED light source 2 is away from 5 top surface of conical refraction portion (one far from LED light source 2
Face) distance be not less than 8mm, this structure makes the lens body inner surface of plastic transparent material far as possible from LED light source
2, the heat loss lens that the work of LED light source 2 generates are effectively prevented under the premise of not increasing lens overall volume.
Further, in this embodiment the incidence surface in the conical refraction portion 5 is frosting, the free form surface goes out
Smooth surface is also frosting, and preferably to play the role of even light, mixed light, the base angle in the conical refraction portion 5 is 120 °.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
Among the protection domain that variation is created still in the utility model.
Claims (10)
1. a kind of great power LED low-angle lens, which is characterized in that the lens include lens body, the lens body
The arc-shaped concave of fully reflecting surface and top including side, the arc-shaped concave bottom are provided with free form surface, the lens sheet
Body bottom has LED accommodating cavities, and conical refraction portion is provided at the top of the LED accommodating cavities.
2. great power LED according to claim 1 low-angle lens, which is characterized in that the arc-shaped concave is by compound eye
Lens array arrangement composition.
3. great power LED according to claim 2 low-angle lens, which is characterized in that along by lens body bottom extremely
The direction at top, lens sizes and radius of curvature in the fly eye lens array gradually increase, and the fly's-eye lens is side
Shape fly's-eye lens.
4. great power LED according to claim 3 low-angle lens, which is characterized in that the curvature of the fly's-eye lens
Radius is 2.51-7.16.
5. great power LED according to claim 4 low-angle lens, which is characterized in that the curvature of the arc-shaped concave
Radius is 30-70.
6. great power LED according to claim 5 low-angle lens, which is characterized in that the accommodating cavity bottom be into
Optical port, the light inlet diameter are not less than 10mm；LED accommodating cavities bottom is provided with LED light source, and the LED light source goes out
Smooth surface is not less than 8mm with conical refraction portion top surface spacing.
7. great power LED according to claim 6 low-angle lens, which is characterized in that the fully reflecting surface is interior complete
Reflecting surface, the lens body shape that the fully reflecting surface encloses are circular cone shape, and frustum of a cone lens body top surface diameter is big
In basal diameter.
8. great power LED according to claim 7 low-angle lens, which is characterized in that the conical refraction portion enters
Smooth surface is frosting, and the light-emitting surface of the free form surface is frosting.
9. great power LED according to claim 8 low-angle lens, which is characterized in that the fly eye lens array by
2000 lens compositions, the contour line formed are hyperbola.
10. great power LED according to claim 9 low-angle lens, which is characterized in that the bottom in the conical refraction portion
Angle is 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721641123.9U CN207796574U (en) | 2017-11-30 | 2017-11-30 | A kind of great power LED low-angle lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721641123.9U CN207796574U (en) | 2017-11-30 | 2017-11-30 | A kind of great power LED low-angle lens |
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| Publication Number | Publication Date |
|---|---|
| CN207796574U true CN207796574U (en) | 2018-08-31 |
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| CN201721641123.9U Active CN207796574U (en) | 2017-11-30 | 2017-11-30 | A kind of great power LED low-angle lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806577A (en) * | 2017-11-30 | 2018-03-16 | 广州达森灯光股份有限公司 | A kind of great power LED low-angle lens |
-
2017
- 2017-11-30 CN CN201721641123.9U patent/CN207796574U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806577A (en) * | 2017-11-30 | 2018-03-16 | 广州达森灯光股份有限公司 | A kind of great power LED low-angle lens |
| CN107806577B (en) * | 2017-11-30 | 2024-02-20 | 广州达森灯光股份有限公司 | Small-angle lens for high-power LED |
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