CN101566307A - Non-imaging optical directional light distribution method for LED light source - Google Patents
Non-imaging optical directional light distribution method for LED light source Download PDFInfo
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- CN101566307A CN101566307A CNA2009100224092A CN200910022409A CN101566307A CN 101566307 A CN101566307 A CN 101566307A CN A2009100224092 A CNA2009100224092 A CN A2009100224092A CN 200910022409 A CN200910022409 A CN 200910022409A CN 101566307 A CN101566307 A CN 101566307A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000003384 imaging method Methods 0.000 title claims abstract description 9
- NCGICGYLBXGBGN-UHFFFAOYSA-N 3-morpholin-4-yl-1-oxa-3-azonia-2-azanidacyclopent-3-en-5-imine;hydrochloride Chemical compound Cl.[N-]1OC(=N)C=[N+]1N1CCOCC1 NCGICGYLBXGBGN-UHFFFAOYSA-N 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000005286 illumination Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 13
- 230000004907 flux Effects 0.000 description 11
- 238000005259 measurement Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004088 simulation Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 125000000174 L-prolyl group Chemical group [H]N1C([H])([H])C([H])([H])C([H])([H])[C@@]1([H])C(*)=O 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000004425 Makrolon Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012994 photoredox catalyst Substances 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0215—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having a regular structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
Abstract
The invention relates to a non-imaging optical directional light distribution method for an LED light source, which comprises the following steps: determining an emergence angle theta4 of LED light passing through a light distribution lens according to the requirement of a light spot, and selecting a refractive index N1 of an incident medium of the LED light, a refractive index N2 of the light distribution lens and a refractive index N3 of an emergent medium to acquire an incidence angle theta1= f(N1, N2, N3 and theta4). By using the incidence angle theta1 as an included angle theta of an incident face and an emergent face of the light distribution lens, the incident face and the emergent face of the light distribution lens can be acquired. The LED light is incident onto the light distribution lens by the incidence angle theta1 and then is refracted by the light distribution lens to form LED directional light. The method solves the technical problems that the prior art cannot radically improve the Lambert property of the LED light source so that directional light distribution cannot be realized, the light distribution evenness is poor and the light efficiency is low, can directionally control the distribution of light intensity of the LED light source so as to realize precise light distribution control, and has the advantages of high reliability, energy conservation and environmental protection.
Description
Technical field
The invention belongs to nonimaging optics luminous intensity distribution technical field, be specifically related to a kind of non-imaging optical directional light distribution method of led light source.
Background technology
Functional lighting such as street lamp, Tunnel Lamp, require minimal illumination index, the highest dazzle of all necessary satisfied illumination code requirement of illumination of every bit in the illumination zone to require index, light intensity uniformity index and light area requirement for restriction, require also very high reliability of products and energy-saving and environmental protection performance etc.In order to improve illuminating effect; the health of protection eye must utilize light fixture to carry out the optical system illuminating light distribution, promptly in a given site of road and given zone, road surface; form a uniform light field of illumination by light-illuminating, the light that shines outside the given area is regarded as invalid light.
The luminous intensity distribution of traditional lighting light fixture mainly is to rely on reflector that light is reflected distribution, light is controlled in the rational regulation zone, and improves the uniformity of light intensity.This method of carrying out the light intensity distribution by reflection, its major defect is that optical energy loss is big, power consumption is big.
The encapsulation of common led light source as shown in Figure 1.Its light distribution E is directly proportional with the cosine of beam angle θ ', and the light that led light source 101 sent is being decayed rapidly with the increase of angle of emergence θ ' according to formed illumination E on the surface.What led light source 101 can be regarded a kind of 180 degree angle bright dippings as has lambert (Lambertian) characteristic light source, and light distribution is that the center is strong, periphery weakens, as shown in Figure 2.If the characteristic of led light source is not carried out the secondary optics design, such light distribution is difficult to satisfy the demand of function lighting use, and the existence of a large amount of invalid light not only makes optical energy loss big, has also reduced illuminating effect widely.Below be the place's taper seat curve of light distribution analysis of existing LED road lamp largest light intensity:
Fig. 3 is the distribution curve flux that the 240W symmetric form of actual measurement does not have suitable light-distribution LED street lamp, and it shows quite a few luminous energy and leaks into beyond the effective coverage frame 102.The result shows that invalid wide the earth has reduced illuminating effect.For realizing lighting requirement, light source can only be gone out power and be increased to 240W, cause energy waste.
Fig. 4 is the distribution curve flux of the 150W butterfly type light-distribution LED street lamp of actual measurement.It shows that the result shows that the uniformity of illumination is very poor, along shadow surface dazzle is arranged, and the blind area is arranged in the irradiation area.
Led light source generally is divided into single light source and multiple light courcess two classes.
Existing multi-light source LED lighting, its luminous intensity distribution are by the setting angle of adjusting numerous light sources light intensity to be carried out direct projection to distribute, and the lighting of formation is a module group type.The multiple light courcess light fixture is Heavy Weight not only, and has produced multiple image, has limited the power expansion and the scope of application, is serious potential safety hazard to vehicle and pedestrian especially.
Existing single light source LED lighting, its luminous intensity distribution mainly are the imitation conventional lamp, rely on reflector that light is reflected distribution.Because the existence of lambert (Lambertian) characteristic, the light that reflector can reflect are seldom, can't fundamentally improve the characteristic that led light source light distribution center is strong, periphery weakens.
Summary of the invention
The object of the present invention is to provide a kind of non-imaging optical directional light distribution method of led light source, it has solved lambert's characteristic that prior art can't fundamentally be improved led light source, thereby can not realize directional light distribution, cause the technical problem that the luminous intensity distribution uniformity is poor, light efficiency is low.
Technical scheme of the present invention is as follows:
The present invention utilizes light to dredge the refraction effect of material from the close material of light to light, overcomes lambert's characteristic of led light source, the characteristic that promptly the light distribution center is strong, periphery weakens.The present invention reflects non-imaging light-distribution lens by orientation the energy of led light source is redistributed, the light that led light source sent is carried out shaping, change, control with making full use of of realization luminous energy, make the LED spot light become the lens surface uniform surface light source with the orientation of light distribution.Implementation step is as follows:
(1) determines LED light outgoing direction of light behind light-distribution lens according to the designing requirement of light field hot spot, can get the angle of emergence θ of LED light behind light-distribution lens thus
4
(2) selected LED light is incident to the incident medium refractive index N of light-distribution lens
1, light-distribution lens refractive index N
2And the emergent medium refractive index N of LED light behind light-distribution lens
3Make LED light be incident to the incidence angle θ of light-distribution lens
1, the angle of emergence θ behind light-distribution lens
4And incident medium refractive index N
1, light-distribution lens refractive index N
2, emergent medium refractive index N
3Satisfy following functional relation:
θ
1＝f(N
1、N
2、N
3、θ
4)，
Be specially θ
4=sin
-1(N
2Sin (θ-sin
-1(N
1Sin θ/N
2)/N
3)),
Obtain the incidence angle θ that LED light is incident to light-distribution lens
1
(3) make the plane of incidence of light-distribution lens and the angle theta of exit facet, the incidence angle θ that LED light is incident to light-distribution lens
1Satisfy relation: θ=θ
1Obtain the angle theta of the light-distribution lens plane of incidence and exit facet, can determine the plane of incidence and the exit facet of light-distribution lens thus;
(4) make LED light with incidence angle θ
1Be incident to light-distribution lens, after the light-distribution lens refraction, obtain the LED directional light.
The present invention has following advantage:
1. it is big to collect light angle, can make full use of the luminous energy of led light source, and the light efficiency height realizes that the lighting requirement desired power is little, therefore can save energy.
2. can make the LED spot light become the lens surface uniform surface light source to the directed control of the light distribution of led light source, luminous intensity distribution uniformity height can be realized precise light distribution control.
3. changed lambert's characteristic of led light source, the light distribution that makes led light source is applicable to the types of functionality lighting, the reliability of products height along with the decay that shooting angle increases is less.
4. can make the illumination of every bit in the illumination zone all satisfy the illumination code requirement fully, promptly satisfy minimal illumination index, the highest dazzle requirement index, light intensity uniformity index and light area requirement for restriction etc.
5. non-blind area, free from glare in the irradiation area use environmental protection, are beneficial to eye health.
6. implementation method is simple, and cost is low.
Description of drawings:
Fig. 1 is the packaged type of existing common led light source.
Fig. 2 is the Lambertian source of 180 ° of beam angles for the led light source equivalence.
Fig. 3 does not have the distribution curve flux of suitable light-distribution LED street lamp for the existing 240W symmetric form of actual measurement.
Fig. 4 is the distribution curve flux of the existing 150W butterfly type light-distribution LED street lamp of actual measurement.
Fig. 5 is a directed plane of refraction optical schematic diagram of the present invention.
Fig. 6 is the directed astigmatism refraction of a light-distribution lens of the present invention schematic diagram.
Fig. 7 is a light-distribution lens directed beams anaclasis schematic diagram of the present invention.
Fig. 8 is the directed banded refraction schematic diagram of light-distribution lens of the present invention.
Fig. 9 is the structural representation with the designed directed refraction of the present invention light-distribution lens of Pro/Engineer software.
Figure 10 is the LightTools software emulation taper seat plot of light intensity of the existing symmetric form LED street lamp that do not have suitable luminous intensity distribution.
Figure 11 is to use the LightTools software emulation taper seat plot of light intensity of the LED street lamp of the directed refraction of the present invention light-distribution lens.
Figure 12 is to use the LightTools software emulation distribution curve flux of the LED street lamp of the directed refraction of the present invention light-distribution lens.
Figure 13 is to use the engineering of the directed refraction of the present invention light-distribution lens analog simulation LED street lamp to use schematic diagram.
Figure 14 is the directed light distribution map that reflects the LED street lamp of nonimaging optics light-distribution lens of use the present invention of actual measurement.
Figure 15 is the directed distribution curve flux that reflects the LED street lamp of nonimaging optics light-distribution lens of use the present invention of actual measurement.
Figure 16 is the comparison diagram of the LED street lamp of same power, same light source, different lens condition.
Figure 17 is the distribution curve flux that actual measurement 150W uses the LED street lamp of the directed refraction of the present invention nonimaging optics light-distribution lens.
The specific embodiment
The directed refraction principle of light-distribution lens of the present invention:
(1.1) Snell's law: light incides on the interface of different medium, and reflection and refraction can take place.Wherein incident light and refract light are positioned on the same plane, and satisfy following relationship with the angle of interface normal:
Si Nieer formula N
mSin θ
m=N
nSin θ
n,
Wherein, N
mAnd N
nBe respectively the refractive index of two media, θ
mAnd θ
nBe respectively incidence angle and refraction angle.
(1.2) the directed refraction principle of light-distribution lens:
As shown in Figure 5, the incident medium refractive index N of light-distribution lens
1, light-distribution lens refractive index N
2, the emergent medium refractive index N of LED light behind light-distribution lens
3LED light is incident to the incidence angle θ of light-distribution lens
1, inject the refraction angle θ behind the light-distribution lens
2, outgoing is to the incidence angle θ of emergent medium
3, the angle of emergence θ behind light-distribution lens
4The plane of incidence of light-distribution lens and the angle theta of exit facet.The refractive index N of lenticular body 203
2=1.56; Incident medium, the emergent medium of lenticular body 203 are air, then incident medium refractive index N
1=emergent medium refractive index N
3=1.
When the light of led light source when air is incident to lenticular body 203, N
2＞N
1θ then
1＞θ
2, the refraction of deflection normal takes place in light; When light when lenticular body 203 is injected the air, N
2＞N
3, θ then
4＞θ
3, the refraction of light generation off-normal, its off-normal, the angle of directed refraction is θ
4
∵θ
1＝θ，
N
1sinθ
1＝N
2sinθ
2
sinθ
2＝N
1sinθ
1/N
2
θ
2＝sin
-1(N
1sinθ
1/N
2)＝sin
-1(N
1sinθ/N
2)
θ
3＝θ
1-θ
2＝θ-θ
2＝θ-sin
-1(N
1sinθ/N
2)
N
3sinθ
4＝N
2sinθ
3
sinθ
4＝N
2sinθ
3/N
3
θ
4＝sin
-1(N
2sinθ
3/N
3)
Be θ
4=sin
-1(N
2Sin (θ-sin
-1(N
1Sin θ/N
2)/N
3))
If θ=30 °
θ then
4=sin
-1((30 °-sin of 1.56sin
-1(sin30 °/1.56)))=18 °
(1.3) the directed astigmatism refraction of light-distribution lens: as shown in Figure 6, can equivalence be after the LED light of the Lambertian source of 180 ° of beam angles passes directed astigmatic profile of tooth lens, light can be towards vertical with profile of tooth and off-centered direction refraction, can change the optical field distribution shape thus, the refractive direction light intensity is improved, other direction light intensity decreasings also can carry out diffuse light and learn processing.
(1.4) light-distribution lens directed beams anaclasis: as shown in Figure 7, can equivalence be after the LED light of the Lambertian source of 180 ° of beam angles passes directed beams light profile of tooth lens, light is towards vertical with profile of tooth and towards the refraction of the direction at center, change the optical field distribution shape therefrom, the refractive direction light intensity is improved, other direction light intensity decreasings also can reflect compression and light uniform treatment to exposing to the extra-regional light of effective lighting.
(1.5) the banded directed astigmatism refraction of light-distribution lens: as shown in Figure 8, can equivalence be after the LED light of the Lambertian source of 180 ° of beam angles passes the directed banded refractor of profile of tooth, light can be towards vertical banded direction refraction with profile of tooth, make the optical field distribution shape that becomes band, improve in banded direction light intensity, other direction light intensity decreasings also can carry out the light uniform treatment.
Specific implementation step of the present invention is as follows:
(1) determines LED light outgoing direction of light behind light-distribution lens according to the designing requirement of light field hot spot, can get the angle of emergence θ of LED light behind light-distribution lens thus
4
(2) selected LED light is incident to the incident medium refractive index N of light-distribution lens
1, light-distribution lens refractive index N
2And the emergent medium refractive index N of LED light behind light-distribution lens
3Make LED light be incident to the incidence angle θ of light-distribution lens
1, the angle of emergence θ behind light-distribution lens
4And incident medium refractive index N
1, light-distribution lens refractive index N
2, emergent medium refractive index N
3Satisfy following functional relation:
θ
1＝f(N
1、N
2、N
3、θ
4)，
Be specially θ
4=sin
-1(N
2Sin (θ-sin
-1(N
1Sin θ/N
2)/N
3)),
Obtain the incidence angle θ that LED light is incident to light-distribution lens
1
(3) make the plane of incidence of light-distribution lens and the angle theta of exit facet, the incidence angle θ that LED light is incident to light-distribution lens
1Satisfy relation: θ=θ
1Obtain the angle theta of the light-distribution lens plane of incidence and exit facet, can determine the plane of incidence and the exit facet of light-distribution lens thus.
(4) make LED light with incidence angle θ
1Be incident to light-distribution lens, after the light-distribution lens refraction, obtain the LED directional light.
Light-distribution lens of the present invention can adopt glass material, PC material or PMMA material etc.Characteristics such as that glass material has is high temperature resistant, penetrance height.The PC material is a makrolon material, and the PMMA material is a polymethyl methacrylate materials, and not only penetrance is higher for these two kinds of materials, realizes aspheric surface optically focused easily, reduces the yellow milky spot phenomenon of hot spot, can also make the product injection mo(u)lding, makes production cost lower.Lenticular body 203 also can adopt transparent PS material, and promptly the transparent polystyrene material is commonly called as benzene.
Use the analog simulation lighting example of the directed refraction of the present invention nonimaging optics light-distribution lens:
Utilize the present invention that the orientation refraction light-distribution lens of different directions is made up, luminous intensity distribution is carried out in the projection light light distribution of led light source, can make light distribution satisfy application request.
Fig. 9 is the directed refraction of the LED light fixture light-distribution lens with the design of Pro/Engineer software, and the requirement of road lighting light distribution is satisfied in its light distribution fully.According to road shape nonuseable part light distribution beyond roadside, the limit, room is reflected compression, road is reflected enhancing along the useful light distribution of stretching direction, carry out diffuse light simultaneously and learn processing.
Figure 10 is that existing symmetric form does not have suitable light-distribution LED street lamp LightTools software emulation taper seat plot of light intensity, and it is circular that it is shaped as symmetry, and the central area light intensity is very strong; Radially away from the center of circle, light intensity decays rapidly with cosine-shaped.Be that most of luminous flux shines the central area, peripheral light intensity is very weak.
Figure 11 is to use the LED street lamp LightTools software emulation taper seat plot of light intensity of the directed refraction of the present invention light-distribution lens, and its shape approximation is a rectangle, and light intensity is even in the rectangular region, and is evenly linear away from the peritropous light distribution in rectangle center.
Figure 12 is to use the directed refraction of the present invention light-distribution lens LED street lamp LightTools software emulation distribution curve flux.
At the long limit C shown in the solid line
0Face, the beam angle during its light intensity 40% is:
C
0＝(225+22.5)-(135-22.5)＝135°；
At the minor face C shown in the dotted line
90Face, the beam angle during its light intensity 40% is:
C
90＝225-135＝90°。
Figure 13 is to use the engineering of the directed refraction of the present invention light-distribution lens analog simulation LED street lamp to use:
40% light intensity C
0Direction (the long limit of rectangle) length:
L＝2H×tan(C
0/2)＝2H×tan(135°/2)＝4.42H；
40% light intensity C
90Direction (rectangle minor face) length:
W＝2H×tan(C
90/2)＝2H×tan(90°/2)＝2H。
That is: when satisfying orientation refraction light-distribution lens LED street lamp LightTools software emulation distribution curve flux, the light distribution that street lamp projects the road surface is approximate rectangular, the long C of rectangle
0With wide C
90Ratio be: 2.41.
By the surface of intensity distribution shown in Figure 14 and distribution curve flux shown in Figure 15 as seen: measured result and analog simulation data basically identical.Its C
0Face 40% light intensity beam angle is 133 °, its C
90Face 40% light intensity beam angle is 90 °, and the strong precision control that distributes of light has realized satisfying the need.
When the light pole height is 10m, the long limit L (C of 40% light intensity road surface distribution rectangle
0) and minor face (C
90) W is:
L＝2H×tan(C
0/2)＝2H×tan(133°/2)＝46(m)
W＝2H×tan(C
90/2)＝2H×tan(90°/2)＝20(m)
The case effect conclusion:
As shown in figure 16, reflect non-imaging light-distribution lens by orientation the energy of light is redistributed, the light that led light source sent is carried out shaping and change, thereby realized the utilization of energy of light source and the orientation control of light distribution.Orientation reflects the nonimaging optics light-distribution lens, the light of led light source is oriented has been refracted to lens surface, and the LED spot light is changed becomes the lens surface uniform surface light source, has improved the light distribution uniformity; Changed lambert's characteristic of led light source, the distribution that makes LED street lamp light intensity is along with the decay that shooting angle increases is less; It is simple in structure, the collection light angle is big, utilization ratio of optical energy is high.
Analyze the directed refraction of actual measurement 150W shown in Figure 17 nonimaging optics light-distribution lens LED road lamp light distribution curve, the result is: illumination uniformity is good, does not have dazzle along the road surface, and the illumination efficiency height realizes that the lighting requirement desired power is little.
Claims (2)
1. the non-imaging optical directional light distribution method of a led light source, it comprises following performing step:
(1) determines LED light outgoing direction of light behind light-distribution lens according to the designing requirement of light field hot spot, can get the angle of emergence θ of LED light behind light-distribution lens thus
4
(2) selected LED light is incident to the incident medium refractive index N of light-distribution lens
1, light-distribution lens refractive index N
2And the emergent medium refractive index N of LED light behind light-distribution lens
3Make LED light be incident to the incidence angle θ of light-distribution lens
1, the angle of emergence θ behind light-distribution lens
4And incident medium refractive index N
1, light-distribution lens refractive index N
2, emergent medium refractive index N
3Satisfy following functional relation:
θ
1＝f(N
1、N
2、N
3、θ
4)，
Obtain the incidence angle θ that LED light is incident to light-distribution lens
1
(3) make the plane of incidence of light-distribution lens and the angle theta of exit facet, the incidence angle θ that LED light is incident to light-distribution lens
1Satisfy following relationship:
θ＝θ
1，
Obtain the angle theta of the light-distribution lens plane of incidence and exit facet, can determine the plane of incidence and the exit facet of light-distribution lens thus;
(4) make LED light with incidence angle θ
1Be incident to light-distribution lens, after the light-distribution lens refraction, obtain the LED directional light.
2. the non-imaging optical directional light distribution method of led light source according to claim 1, it is characterized in that: described LED light is incident to the incidence angle θ of light-distribution lens
1, the angle of emergence θ behind light-distribution lens
4And incident medium refractive index N
1, light-distribution lens refractive index N
2, emergent medium refractive index N
3Satisfy following functional relation:
θ
4＝sin
-1(N
2sin(θ-sin
-1(N
1sinθ/N
2)/N
3))。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100224092A CN101566307B (en) | 2009-05-22 | 2009-05-22 | Non-imaging optical directional light distribution method for LED light source |
| PCT/CN2010/073051 WO2010133182A1 (en) | 2009-05-22 | 2010-05-21 | Non-imaging optical directed light distributing method for led light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100224092A CN101566307B (en) | 2009-05-22 | 2009-05-22 | Non-imaging optical directional light distribution method for LED light source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101566307A true CN101566307A (en) | 2009-10-28 |
| CN101566307B CN101566307B (en) | 2011-04-20 |
Family
ID=41282603
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100224092A Expired - Fee Related CN101566307B (en) | 2009-05-22 | 2009-05-22 | Non-imaging optical directional light distribution method for LED light source |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101566307B (en) |
| WO (1) | WO2010133182A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010133182A1 (en) * | 2009-05-22 | 2010-11-25 | 西安智海电力科技有限公司 | Non-imaging optical directed light distributing method for led light source |
| WO2010133183A1 (en) * | 2009-05-22 | 2010-11-25 | 西安智海电力科技有限公司 | Non-imaging optical directional light distributing lens for led light source |
| CN102193193A (en) * | 2010-03-11 | 2011-09-21 | 上海三思电子工程有限公司 | Method for designing lens having disc-shaped uniformly illuminating faculae |
| CN102639928A (en) * | 2009-11-18 | 2012-08-15 | 积水住宅株式会社 | Indirect lighting apparatus |
| CN111351642A (en) * | 2020-03-13 | 2020-06-30 | 昆山丘钛微电子科技有限公司 | Test light source |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3430272C2 (en) * | 1984-08-17 | 1993-10-14 | Bosch Gmbh Robert | Fog lights with a cover plate for motor vehicles provided with optical means |
| JPH0340307A (en) * | 1990-03-19 | 1991-02-21 | Toshiba Lighting & Technol Corp | Illumination fixture |
| CN2401777Y (en) * | 1999-08-24 | 2000-10-18 | 陈学智 | Photopermeable lampshade for spotlight |
| CN2553238Y (en) * | 2002-06-19 | 2003-05-28 | 桂林机床电器有限公司 | Lampshade capable of reinforcing signal lamp effective light intensity |
| JP2008310259A (en) * | 2007-06-18 | 2008-12-25 | Sumitomo Chemical Co Ltd | Optical path deflecting plate, surface light source apparatus and transmission type image display apparatus |
| CN101566307B (en) * | 2009-05-22 | 2011-04-20 | 西安智海电力科技有限公司 | Non-imaging optical directional light distribution method for LED light source |
| CN201412773Y (en) * | 2009-06-05 | 2010-02-24 | 张志强 | Strip-shaped light uniformization panel for LED lamp |
-
2009
- 2009-05-22 CN CN2009100224092A patent/CN101566307B/en not_active Expired - Fee Related
-
2010
- 2010-05-21 WO PCT/CN2010/073051 patent/WO2010133182A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010133182A1 (en) * | 2009-05-22 | 2010-11-25 | 西安智海电力科技有限公司 | Non-imaging optical directed light distributing method for led light source |
| WO2010133183A1 (en) * | 2009-05-22 | 2010-11-25 | 西安智海电力科技有限公司 | Non-imaging optical directional light distributing lens for led light source |
| CN102639928A (en) * | 2009-11-18 | 2012-08-15 | 积水住宅株式会社 | Indirect lighting apparatus |
| CN102639928B (en) * | 2009-11-18 | 2014-10-29 | 积水住宅株式会社 | Indirect lighting apparatus |
| CN102193193A (en) * | 2010-03-11 | 2011-09-21 | 上海三思电子工程有限公司 | Method for designing lens having disc-shaped uniformly illuminating faculae |
| CN102193193B (en) * | 2010-03-11 | 2015-01-14 | 上海三思电子工程有限公司 | Method for designing lens having disc-shaped uniformly illuminating faculae |
| CN111351642A (en) * | 2020-03-13 | 2020-06-30 | 昆山丘钛微电子科技有限公司 | Test light source |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101566307B (en) | 2011-04-20 |
| WO2010133182A1 (en) | 2010-11-25 |
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