CN207514831U - A kind of LED lens for forming uniform square hot spot - Google Patents
A kind of LED lens for forming uniform square hot spot Download PDFInfo
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- CN207514831U CN207514831U CN201721629669.2U CN201721629669U CN207514831U CN 207514831 U CN207514831 U CN 207514831U CN 201721629669 U CN201721629669 U CN 201721629669U CN 207514831 U CN207514831 U CN 207514831U
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Abstract
A kind of LED lens for forming uniform square hot spot, the LED lens are made of double free form surface collimation lenses and single free-form surface lens, the plane of incidence and exit facet of double free form surface collimation lenses are free form surface, the plane of incidence of the list free-form surface lens is plane, exit facet is free form surface, the list free-form surface lens are positioned at double between free form surface collimation lens and LED light source, the light that LED light source is sent out projects after the multiple refraction of refractive light paths that the plane of incidence of single free-form surface lens enters and is collectively constituted through single free-form surface lens and double free form surface collimation lenses from the exit facet of double free form surface collimation lenses.The utility model is by using multiple refractive light paths, its light is controllable, spotlight effect is good, and light source forms the square focus spot of uniform-illumination after lens in shadow surface, hot spot sharpness of border is as it can be seen that the angle of divergence is small, with the effect for saving luminous energy, capacity usage ratio higher so as to effectively improve the utilization rate of light, reaches energy-efficient purpose.
Description
Technical field
The utility model is related to a kind of secondary optics elements for adapting to LED light source, and being specifically related to one kind can form
The LED lens of even square focus spot.
Background technology
Semiconductor lighting（LED illumination）It is the third secondary light source revolution after incandescent lamp, fluorescent lamp.Due to having height
The distinguishing features such as effect, energy-saving and environmental protection, long-life, approximate point light source, are high-tech sectors most with prospects global in recent years
One of, the support energetically in Main Countries and area is obtained, whole world LED industry comes into the fast-developing phase at present, extensively
It is general to be applied to various indoor and outdoors lighting areas, it is shown including plane, digital household appliances, automotive electronics and Special lighting lamp etc.,
Global LED illumination permeability is just in fast lifting.
Due to the light approximate Lambertian type that LED light source is sent out, i.e. light intensity is in cosine distribution, it is impossible to illumination is directly used in, it is secondary
Optical design has the light output for changing LED, and redistributing light according to application scenario reduces light loss to the greatest extent, improves light profit
With efficiency, the advantages such as cost are reduced so that it meets different application demands and to widening LED light to improving system performance
The application range in source is particularly important.At present, LED illumination optical design is mainly with reality by free form surface come light distribution again
It is illuminated needed for existing, one kind is empirical method（Trial-and-error method）, another kind is algorithm design, and theoretical foundation is mainly based upon point light source list
The design of wavelength.
At present, in most of general illumination occasion, for example room lighting, road etc. can be uniform it is generally desirable to illumination face,
And be square hot spot, such processing so that illumination place can obtain on capacity usage ratio and in whole hot spot uniformity
Very big promotion.However, market is generally circular light spot now, when using face to be illuminated as circular light spot shape, in adjacent lamps and lanterns
Joining place certainly will will appear dark space and irradiation blind spot, and make the uneven illumination of face to be illuminated even.Currently, setting for square hot spot is generated
Meter method has formed a variety of solution incidences of criminal offenses, such as：1）Street lamp lens shelled peanut structure, is regulated and controled by free form surface, generates square light
Spot, but its angle of divergence is excessive, and uniformity mainly determines that array of source is weaker to uniformity controlling by single source module；2）It is logical
The image-forming principle of square light source is crossed, using the secondary optics elements such as Fresnel lens and planoconvex spotlight, is formed and collimates uniform square
Hot spot, but light source integral energy utilization rate is less than 50%, because it can not use the light that light source high angle sent out；3）It is compound
Paraboloid is, it can be achieved that the square hot spot near field, but its angle of divergence is excessive, can not carry out LED light source low-angle part tune
Control.
Invention content
The purpose of this utility model is that for above-mentioned there are problem and shortage, provide it is a kind of use multiple refractive light paths,
Light is controllable, and spotlight effect is good, and the square focus spot of uniform-illumination is formed in shadow surface, hot spot sharpness of border as it can be seen that the angle of divergence is small,
Saving luminous energy effect is good, capacity usage ratio higher, can effectively improve the LED lens of the utilization rate of light.
What the technical solution of the utility model was realized in：
The LED lens described in the utility model for forming uniform square hot spot, including the lens being arranged in front of LED light source
Ontology, its main feature is that：The lens body is made of double free form surface collimation lenses and single free-form surface lens, wherein described double
The plane of incidence and exit facet of free form surface collimation lens are free form surface, and the plane of incidence of the list free-form surface lens is flat
Face, exit facet are free form surface, and the list free-form surface lens are located at double between free form surface collimation lens and LED light source, LED
The light that light source is sent out enters from the plane of incidence of single free-form surface lens and is collimated through single free-form surface lens and double free form surfaces
It projects and is formed uniform from the exit facet of double free form surface collimation lenses after the multiple refraction for the refractive light paths that lens collectively constitute
Square focus spot.
Wherein, double free form surface collimation lenses use makrolon（Pc）Or polymethyl methacrylate（Pmma）Or
Glass（SiO2）It is made.
The list free-form surface lens use makrolon（Pc）Or polymethyl methacrylate（Pmma）Or glass
（SiO2）It is made.
The LED light source is the Lambertian light source that single light-emitting surface is square or the light-emitting surface integrated for multiple LED light sources
Lambertian light source for square.
In order to further improve the utilization rate of light, the lens body is provided with multiple, and multiple lens bodies are pressed
It is arranged according to certain coordinate and rotation angle and is formed as LED lens array structure.
The utility model compared with prior art, has following remarkable advantage：
1）The utility model is as a result of skilful by a single free-form surface lens and a double free form surface collimation lenses
It is combined together to form the structure of LED lens wonderfully, by using multiple refractive light paths, light is controllable, and spotlight effect is good, and
Light source forms the square focus spot of uniform-illumination after lens in shadow surface, and hot spot sharpness of border is as it can be seen that the angle of divergence is small, and overcomes
The deficiency of light source high angle part, therefore the utility model can not be individually utilized using modes such as Fresnel lens or planoconvex spotlights
With the effect for saving luminous energy, capacity usage ratio higher so as to effectively improve the utilization rate of light, reaches energy-efficient purpose；
2）Compared to the square hot spot that previous square hot spot, the utility model obtain, a）The uniformity is more than 90%, and the angle of divergence is small
In 5o, hot spot sharpness of border as it can be seen that and the array of source entirety uniformity that forms according to this be more than 95%；b）Traditional Fresnel is saturating
Mirror and planoconvex spotlight can also realize uniform square hot spot, but it can not realize hot spot uniformity, Zhi Neng in LED light source full angle
Low-angle realizes hot spot uniformity, thus the utility model has significant raising in collection of energy rate；c）The utility model
Hot spot sharpness of border is as it can be seen that its array can carry out simple pattern design according to single module light intensity and spectrum regulation and control in far field.
The utility model will be further described below with reference to the accompanying drawings.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the structure diagram of double free form surface collimation lenses described in the utility model.
Fig. 3 is the structure diagram of single free-form surface lens described in the utility model.
Fig. 4 is the utility model embodiment array structure thereof schematic diagram.
Fig. 5 emulates illumination result schematic diagram for the utility model lens.
Fig. 6 is the utility model lens array uniformity regulation and control emulation illumination result schematic diagram.
Fig. 7 is the utility model sharpness of border verification emulation illumination result schematic diagram.
Specific embodiment
As shown in Figure 1-Figure 3, the LED lens described in the utility model for forming uniform square hot spot, including being arranged on LED
The lens body 1 in 2 front of light source, the lens body 1 is by double free form surface collimation lenses 11 and single 12 groups of free-form surface lens
Into the plane of incidence 111 and exit facet 112 of double free form surface collimation lenses 11 are free form surface, the list free form surface
The plane of incidence 121 of lens 12 is plane, and exit facet 122 is free form surface, and the list free-form surface lens 12 are located at double freely bent
Between face collimation lens 11 and LED light source 2, light that LED light source 2 is sent out from the planes of incidence 121 of single free-form surface lens 12 into
After the multiple refraction of refractive light paths for entering and being collectively constituted through single free-form surface lens 12 and double free form surface collimation lenses 11 from
The exit facet 112 of double free form surface collimation lenses 11 projects and forms uniform square hot spot.Wherein, double free form surface collimations
Lens 11 use makrolon（Pc）Or polymethyl methacrylate（Pmma）Or glass（SiO2）It is made.The list free form surface
Lens 12 use makrolon（Pc）Or polymethyl methacrylate（Pmma）Or glass（SiO2）It is made.The LED light source 2 is
The Lambertian light source that single light-emitting surface is the Lambertian light source of square or the light-emitting surface integrated for multiple LED light sources is square, and
The light-emitting surface size of LED light source is not the smaller the better compared to the size of LED lens, but there are an optimum values.
In order to further improve the utilization rate of light, as shown in figure 4, the lens body 1 be provided with it is multiple and multiple described
Lens body 1 is arranged according to certain coordinate and rotation angle and is formed as LED lens array structure 3.It specifically will
Light source and lens are combined into unit module, and are arranged according to a position fixing and rotation angle, and single source intensity can be with
Individually control.In this preferred implementation：1. first multiple unit modules form a line by spacing 25mm, and determine center,
Each unit module positioned at both sides can realize the row by eliminating engagement edge inhomogeneities around row center axis rotation 5.72o
Hot spot is integrally uniform；2. replicating the row respectively on the both sides of the list element module, the array for being then within both sides is whole around center
Straight line rotation 5.72o eliminates engagement edge inhomogeneities where array, realizes that the row hot spot of array is integrally uniform；3. by center list
Light source intensity in element module regulates and controls to the 95% of remaining module light intensity, advanced optimizes hot spot uniformity.
In order to verify optics of lens effect, a rectangular detection screen is being placed at four meters of monochromatic light source module, acquisition
The results are shown in Figure 5 for illumination, square hot spot, and the uniformity is more than 90%, the angle of divergence about 5o.
In order to verify whether the regulation and control of lens array hot spot uniformity are feasible, and optics survey is carried out successively according to above-mentioned regulation and control principle
Examination, the results are shown in Figure 6 for the illumination of acquisition.Square hot spot, the uniformity are more than 95%, the angle of divergence about 10o.
In order to verify lens boundary clarity, when array is verified, close wherein source light and carry out optic test, obtain
Illumination the results are shown in Figure 7.Sharpness of border is as it can be seen that simple pattern can be realized.
The utility model is described by embodiment, but the utility model is not construed as limiting, with reference to this practicality
Novel description, other variations of the disclosed embodiments, is such as readily apparent that the professional person of this field, such
Variation should belong within the scope of the utility model claims restriction.
Claims (5)
1. a kind of LED lens for forming uniform square hot spot, including being arranged on LED light source（2）The lens body in front（1）,
It is characterized in that：The lens body（1）By double free form surface collimation lenses（11）With single free-form surface lens（12）Composition, wherein
Double free form surface collimation lenses（11）The plane of incidence（111）And exit facet（112）It is free form surface, it is described single freely bent
Face lens（12）The plane of incidence（121）For plane, exit facet（122）For free form surface, the list free-form surface lens（12）Position
In double free form surface collimation lenses（11）With LED light source（2）Between, LED light source（2）The light sent out is from single free-form surface lens
（12）The plane of incidence（121）Into and through single free-form surface lens（12）With double free form surface collimation lenses（11）It collectively constitutes
From double free form surface collimation lenses after the multiple refraction of refractive light paths（11）Exit facet（112）It projects and forms uniform square light
Spot.
2. the LED lens according to claim 1 for forming uniform square hot spot, it is characterised in that：Double free form surfaces
Collimation lens（11）Using makrolon（Pc）Or polymethyl methacrylate（Pmma）Or glass（SiO2）It is made.
3. the LED lens according to claim 1 for forming uniform square hot spot, it is characterised in that：The list free form surface
Lens（12）Using makrolon（Pc）Or polymethyl methacrylate（Pmma）Or glass（SiO2）It is made.
4. the LED lens according to claim 1 for forming uniform square hot spot, it is characterised in that：The LED light source（2）
For Lambertian light source that single light-emitting surface is square or be the light-emitting surface that multiple LED light sources integrate it is the Lambertian light source of square.
5. the LED lens according to claim 1 for forming uniform square hot spot, it is characterised in that：The lens body（1）
It is provided with multiple, and multiple lens bodies（1）It is arranged according to certain coordinate and rotation angle and to be formed as LED saturating
Lens array structure（3）.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017210705987 | 2017-08-25 | ||
| CN201721070598 | 2017-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207514831U true CN207514831U (en) | 2018-06-19 |
Family
ID=62542335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721629669.2U Expired - Fee Related CN207514831U (en) | 2017-08-25 | 2017-11-29 | A kind of LED lens for forming uniform square hot spot |
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|---|---|
| CN (1) | CN207514831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877291A (en) * | 2022-06-13 | 2022-08-09 | 成都派斯光学有限公司 | Combined lens and control method thereof |
-
2017
- 2017-11-29 CN CN201721629669.2U patent/CN207514831U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877291A (en) * | 2022-06-13 | 2022-08-09 | 成都派斯光学有限公司 | Combined lens and control method thereof |
| CN114877291B (en) * | 2022-06-13 | 2024-04-05 | 成都派斯光学有限公司 | Combined lens and control method thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200730 Address after: 510000, No. 12, Garden Road, Guangzhou private science and Technology Park, Baiyun District, Guangdong, Guangzhou Patentee after: GUANGDONG DP Co.,Ltd. Address before: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee before: GUANGDONG INSTITUTE OF SEMICONDUCTOR INDUSTRIAL TECHNOLOGY |
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| 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: 20180619 Termination date: 20201129 |