CN104214592B - LED range light - Google Patents
LED range light Download PDFInfo
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- CN104214592B CN104214592B CN201310211575.3A CN201310211575A CN104214592B CN 104214592 B CN104214592 B CN 104214592B CN 201310211575 A CN201310211575 A CN 201310211575A CN 104214592 B CN104214592 B CN 104214592B
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Abstract
A kind of LED range light, including aluminium base, multiple light-distribution lens and multiple LED chip.Light-distribution lens includes bottom surface and end face, and the center of bottom surface caves inward, and forms groove, and the sidewall of groove is the plane of incidence, and the degree of depth of groove and width ratio are more than 2.The light that LED chip sends is incident from the plane of incidence, occurs to reflect backward both sides deviation.The degree of depth being additionally, since groove is more than 2 with width ratio, so that the plane of incidence is relatively " suddenly ".Therefore, light is after the plane of incidence, and deviation angle is bigger.Light is when end face outgoing, and the angle of emergence is more than angle of incidence, so that light is further to both sides deviation.After twice deviation, the light that LED chip sends then can reach default deviation angle, thus above-mentioned LED range light can be made to go out light in the range of default beam angle.Additionally, multiple light-distribution lens are arranged around aluminium base.Therefore, the light-out effect of above-mentioned LED range light is the superposition of multiple light-distribution lens light distribution effect, therefore above-mentioned LED navigation light can be made according to evenly.
Description
Technical field
The present invention relates to lighting engineering, particularly relate to a kind of LED range light.
Background technology
LED light source have energy-saving and environmental protection, safety, color rendering index height, life-span length, volume is little, light efficiency is high,
The distinguishing features such as energy consumption is little.Along with LED chip and the maturation of packaging technology, the sufficient brightness of LED light source is with full
The demand of each lighting field of foot, LED illumination has become as
In some applications, often the rising angle to light fixture has special requirement.Such as the range light on airport,
Just need light can only outgoing in the range of default beam angle, illumination of then having tried not in the range of other
Distribution.Therefore, LED light source is applied to during above-mentioned field need to carry out secondary optical design.Current secondary
Luminous intensity distribution the most all uses the device such as reflector, reflector, with reflected version, light is carried out luminous intensity distribution.But, LED
Light source conventional light source omnidirectional from electric filament lamp, metal halid lamp etc. is different, and LED light source is by its chip package
The luminous multiformity of structures shape, be only difficult to reach default light distribution effect by reflection.Therefore, logical
Cross the light that traditional secondary optical design is difficult to make LED light source send and meet the demand of range light.
Summary of the invention
Based on this, it is necessary to provide a kind of and make light LED range light of outgoing in the range of default beam angle.
A kind of LED range light, including:
Aluminium base, for circle；
Light-distribution lens, for multiple, multiple described light-distribution lens are around the marginal distribution of described aluminium base and fix
In described aluminium base, described light-distribution lens is rotational symmetry structure, and including bottom surface and end face, described end face is
Free form surface, described bottom surface is circular flat, and the edge of described bottom surface is fixing with the edge of described end face to be connected,
The optical axis of described light-distribution lens passes described bottom surface and the center of described end face, and the center of described bottom surface concaves
Falling into, form groove, described groove is rotational symmetry structure, and the sidewall of described groove is the plane of incidence, described recessed
The degree of depth of groove and width ratio are more than 2；And
LED chip, for multiple, and is both secured on described aluminium base, the luminous site of described LED chip
In described groove, and the center superposition of its center and described bottom surface.
Wherein in an embodiment, described bottom surface is frosting, and light can occur diffuse-reflectance in described bottom surface.
Wherein in an embodiment, described light-distribution lens is made up of polymethyl methacrylate.
Wherein in an embodiment, described bottom surface is to be rotated, by line segment A, the plane formed around optical axis, described
End face is to be rotated, by free curve B, the free form surface formed around optical axis, and the described plane of incidence is by free curve C
Rotate the free form surface formed around optical axis, with the center of bottom surface as initial point, optical axis is as X-axis and forms institute
In the coordinate system that straight line is Y-axis at the line segment place stating bottom surface, the coordinate of two end points of line segment A is respectively a1
(0,27.64) and a2(0 ,-27.64)；The end points of free curve B is a1(0,27.64) and a2(0,
-27.64), and also through some a b1(9.26,23.24), b2(13.25,15.04), b3(14.29,7.35),
B4(14.32,0), b5(14.29 ,-7.35), b6(13.25 ,-15.04) and b7(9.26 ,-23.24)；
The coordinate of two end points of free curve C is respectively c1(0,3.2), c2(0 ,-3.2), and free curve C
Also through some a c3(4.65,2.54), c4(8.52,1.68), c5(13.15,0), c6(8.52 ,-1.68)
And c7(4.65 ,-2.54).
Wherein in an embodiment, a diameter of 27.6 millimeters of described bottom surface, the width of described groove is 3.2
Millimeter, the degree of depth of described groove is 6.62 millimeters, and the height of described light-distribution lens is 7.21 millimeters.
Above-mentioned LED range light, the light that LED chip sends is incident from the plane of incidence.According to refraction principle, light
Line can be to both sides deviation after the plane of incidence.The degree of depth being additionally, since groove is more than 2 with width ratio, so that
Obtain the plane of incidence relatively " suddenly ".Therefore, light is after the plane of incidence, and deviation angle is bigger.Light after the plane of incidence,
From end face outgoing.Due to light from optically denser medium directive optically thinner medium time, the angle of emergence be more than angle of incidence, thus
Make light further to both sides deviation.After twice deviation, the light that LED chip sends then can reach
The deviation angle preset, thus above-mentioned LED range light can be made to go out light in the range of default beam angle.Additionally,
Multiple light-distribution lens are arranged around aluminium base.Therefore, the light-out effect of above-mentioned LED range light is multiple luminous intensity distribution
The superposition of lens light effect, therefore the illumination of above-mentioned LED range light can be made evenly.
Accompanying drawing explanation
Fig. 1 is the structural representation of LED range light in present pre-ferred embodiments；
Fig. 2 is the profile of LED range light shown in Fig. 1；
Fig. 3 is the structural representation of light-distribution lens in LED range light shown in Fig. 1；
Fig. 4 is the coordinate schematic diagram of light-distribution lens in plane right-angle coordinate；
Fig. 5 is the scale diagrams of light-distribution lens shown in Fig. 2；
Fig. 6 is the intense part figure of LED range light shown in Fig. 1.
Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.
Accompanying drawing gives presently preferred embodiments of the present invention.But, the present invention can come real in many different forms
Existing, however it is not limited to embodiment described herein.On the contrary, providing the purpose of these embodiments is to make this
The understanding of disclosure of the invention content is more thorough comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, and it can be directly at another yuan
On part or element placed in the middle can also be there is.When an element is considered as " connection " another element, and it can
To be directly to another element or to may be simultaneously present centering elements.
Unless otherwise defined, all of technology used herein and scientific terminology and the technology belonging to the present invention
The implication that the technical staff in field is generally understood that is identical.The art used the most in the description of the invention
Language is intended merely to describe the purpose of specific embodiment, it is not intended that in limiting the present invention.Used herein
Term " and/or " include the arbitrary and all of combination of one or more relevant Listed Items.
Referring to Fig. 1 and Fig. 2, the LED range light 10 in present pre-ferred embodiments includes light-distribution lens
100, aluminium base 101 and LED chip 102.
Aluminium base 101 is circular.
Seeing also Fig. 3, light-distribution lens 100 is rotational symmetry structure.Light-distribution lens 100 includes bottom surface
110 and end face 120.End face 120 is free form surface, and bottom surface 110 is circular flat, the edge of bottom surface 110
Fix with the edge of end face 120 and be connected.The optical axis of light-distribution lens 100 is through bottom surface 110 and end face 120
Center.The center of bottom surface 110 caves inward, and forms groove 130.Groove 130 is rotational symmetry structure, recessed
The sidewall of groove 130 is the plane of incidence 131.
LED chip 102 is multiple, and is both secured on aluminium base 101.Therefore, LED chip 102 work
The heat making to produce can Quick diffusing by aluminium base 101.LED chip 102 luminous site is in groove 130
In, and the center superposition of its center and bottom surface 110.Concrete, the groove 130 of each light-distribution lens 100
Inside being respectively provided with a LED chip 102, the light that multiple LED chip 102 send is all through light-distribution lens 100
Secondary light-distribution.Therefore, the light-out effect of LED range light 10 is the folded of multiple light-distribution lens 100 light distribution effect
Add, thus LED range light 10 illumination can be made more uniform.
The light that LED chip 102 sends is incident from the plane of incidence 131.According to refraction principle, light will be to
There is deviation in the both sides of light-distribution lens 100.Wherein, the degree of depth of groove 130 and width ratio are more than 2.Therefore,
Make the plane of incidence 131 relatively " suddenly ".Light is after the plane of incidence 131, and deviation angle is bigger.Light is through incidence
Behind face 131, from end face 120 outgoing.Due to light from optically denser medium directive optically thinner medium time, angle of emergence meeting
More than angle of incidence, so that light is further to both sides deviation.After twice deviation, LED chip 102
The light sent then can reach default deviation angle.
In light-distribution lens 100, the shape of free form surface is according to incident ray and the relation of emergent ray and this alunite
Tumour of external auditory meatus rule is tried to achieve, and concrete mode is as follows:
First according to the demand of LED range light 10 deviation angle and the characteristics of luminescence of LED chip 102 are obtained
The vector representation in rectangular coordinate system in space of emergent ray and incident ray.Under again vector representation being substituted into
Formula:
N=Nxi+Nyj+Nzk；
A=Axi+Ayj+Azk；A '=Bxi+Byj+Bzk；
Wherein, A is incident ray vector, and A ' is emergent ray vector, and N is normal vector.Free form surface is divided
For multiple grid nodes, according to incident ray and emergent ray snell law, obtain by the way of iteration
Free form surface grid node normal vector coordinate, just can construct the shape of free form surface by the coordinate points obtained
Shape.
Seeing also Fig. 4, the most in the present embodiment, bottom surface 110 is around optical axis rotary by line segment A
The plane become, end face 120 is to be rotated the free form surface formed, the plane of incidence 131 around optical axis by free curve B
For being rotated the free form surface formed around optical axis by free curve C.
With the center of bottom surface 110 as initial point, optical axis is as X-axis and forms the line segment place of bottom surface 110
Straight line is in the coordinate system of Y-axis, and the coordinate of two end points of line segment A is respectively a1(0,27.64) and a2(0,
-27.64).The end points of free curve B is a1(0,27.64) and a2(0 ,-27.64), and also through point
B1(9.26,23.24), b2(13.25,15.04), b3(14.29,7.35), b4(14.32,0), b5
(14.29 ,-7.35), b6(13.25 ,-15.04) and b7(9.26 ,-23.24).Free curve C two end
Point coordinate be respectively c1(0,3.2), c2(0 ,-3.2), and free curve C also through some a c3(4.65,
2.54), c4(8.52,1.68), c5(13.15,0), c6(8.52 ,-1.68) and c7(4.65 ,-2.54).
See also Fig. 5, in the present embodiment, a diameter of 27.6 millimeters of bottom surface 110, groove 130
Width be 3.2 millimeters, the degree of depth of groove 130 is 6.62 millimeters, and the height of light-distribution lens 100 is 7.21
Millimeter.
When light-distribution lens 100 meets above-mentioned parameter, the illumination patterns of LED range light 10 is as shown in Figure 6.
Wherein, surface of intensity distribution polar coordinate (ρ, θ) represent, wherein ρ value (100,200 ... ..700) represents
Light intensity value, θ value (0,10 ... 180) represents optic angle.
Understand according to Fig. 6, in 20 degree of spatial dimensions that illumination is mainly distributed between 70～90, at 0～70 degree
Substantially there is no illumination patterns in this region, reach 130 the strongest candelas at about 85 degree light intensity values.Cause
This, light-distribution lens 100 achieves light and launches the deviation of predetermined angle, the rising angle of LED range light 10
In preset range (70～90 degree), thus the demand of navigation can be met.
It is pointed out that above-mentioned parameter is only a preferred embodiment of the present invention, according to identical ratio pair
Light-distribution lens 100 zooms in and out the light distribution effect not interfering with light-distribution lens 100.Additionally, art technology
Above-mentioned parameter, according to the common knowledge in this area, is modified in error allowed band and also will not by personnel
Affect the light distribution effect of light-distribution lens 100.
In the present embodiment, bottom surface 110 is frosting, and light directive bottom surface 110 can occur diffuse-reflectance.By
In light at the plane of incidence 131 and end face 120 it may happen that reflection, the light reflected then can directive bottom surface
110.And owing to bottom surface 110 is frosting.Therefore, light is totally reflected in bottom surface 110 so that reflection
The light returned penetrates to end face 120 again, thus improves the utilization rate of light.
In the present embodiment, light-distribution lens 100 is made up of polymethyl methacrylate.Poly-methyl methacrylate
The refractive index ratio air of ester is big, and polymethyl methacrylate belongs to polyester material, has intensity height, matter
The advantages such as amount is light.Therefore, the light-distribution lens 100 using polymethyl methacrylate to make is durable.Need
It is noted that in other embodiments, light-distribution lens 100 also can use that other are transparent and refractive index is more than
The material of air is made.
LED range light 10, the light that LED chip 102 sends is incident from the plane of incidence.According to refraction principle,
Light can be to both sides deviation after the plane of incidence.The degree of depth being additionally, since groove 130 is more than 2 with width ratio,
So that the plane of incidence is relatively " suddenly ".Therefore, light is after the plane of incidence, and deviation angle is bigger.Light is through entering
After penetrating face, from end face 120 outgoing.Due to light from optically denser medium directive optically thinner medium time, the angle of emergence is more than
Angle of incidence, so that light is further to both sides deviation.After twice deviation, LED chip 102
The light gone out then can reach default deviation angle, thus LED range light 10 can be made from default beam angle
In the range of go out light.Additionally, multiple light-distribution lens 100 are arranged around aluminium base 101.Therefore, LED navigation
The light-out effect of lamp 10 is the superposition of multiple light-distribution lens 100 light distribution effect, therefore can make LED range light 10
Illumination evenly.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (5)
1. a LED range light, it is characterised in that including:
Aluminium base, for circle；
Light-distribution lens, for multiple, multiple described light-distribution lens are around the marginal distribution of described aluminium base and fix
In described aluminium base, described light-distribution lens is rotational symmetry structure, and including bottom surface and end face, described end face is
Free form surface, described bottom surface is circular flat, and the edge of described bottom surface is fixing with the edge of described end face to be connected,
The optical axis of described light-distribution lens passes described bottom surface and the center of described end face, and the center of described bottom surface concaves
Falling into, form groove, described groove is rotational symmetry structure, and the sidewall of described groove is the plane of incidence, described recessed
The degree of depth of groove and width ratio are more than 2；And
LED chip, for multiple, and is both secured on described aluminium base, the luminous site of described LED chip
In described groove, and the center superposition of its center and described bottom surface；
The free form surface of described end face is determined by following formula:
N=Nxi+Nyj+Nzk；
A=Axi+Ayj+Azk；A '=Bxi+Byj+Bzk；
Wherein, A is incident ray vector；A ' is emergent ray vector, described emergent ray be distributed in 70 to
In the range of 90 degree；N is normal vector；Free form surface is divided into multiple grid node, according to incident illumination
Line and emergent ray vector, obtain free form surface grid node normal vector coordinate by the way of iteration, logical
Cross the normal coordinate obtained and construct the shape of free form surface.
LED range light the most according to claim 1, it is characterised in that described bottom surface is frosting,
Light can occur diffuse-reflectance in described bottom surface.
LED range light the most according to claim 1, it is characterised in that described light-distribution lens is by gathering
Methyl methacrylate is made.
LED range light the most according to claim 1, it is characterised in that described bottom surface is by line segment A
Rotate the plane formed around optical axis, described end face is to be rotated, by free curve B, the free form surface formed around optical axis,
The described plane of incidence is to be rotated, by free curve C, the free form surface formed around optical axis, is being former with the center of bottom surface
Point, optical axis are in the coordinate system that straight line is Y-axis at X-axis and the line segment place forming described bottom surface, line segment
The coordinate of two end points of A is respectively a1 (0,27.64) and a2 (0 ,-27.64)；The end points of free curve B
For a1 (0,27.64) and a2 (0 ,-27.64), and also through some b1 (9.26,23.24), a b2 (13.25,
15.04), b3 (14.29,7.35), b4 (14.32,0), b5 (14.29 ,-7.35), b6 (13.25 ,-15.04)
And b7 (9.26 ,-23.24)；The coordinate of two end points of free curve C be respectively c1 (0,3.2), c2 (0,
-3.2), and free curve C also through some a c3 (4.65,2.54), c4 (8.52,1.68), c5 (13.15,
0), c6 (8.52 ,-1.68) and c7 (4.65 ,-2.54).
LED range light the most according to claim 4, it is characterised in that described bottom surface a diameter of
27.6 millimeters, the width of described groove is 3.2 millimeters, and the degree of depth of described groove is 6.62 millimeters, described in join
The height of optical lens is 7.21 millimeters.
Priority Applications (1)
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| CN201310211575.3A CN104214592B (en) | 2013-05-30 | 2013-05-30 | LED range light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310211575.3A CN104214592B (en) | 2013-05-30 | 2013-05-30 | LED range light |
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| CN104214592A CN104214592A (en) | 2014-12-17 |
| CN104214592B true CN104214592B (en) | 2016-11-23 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930418A (en) * | 2015-06-24 | 2015-09-23 | 深圳市锐步科技有限公司 | Vertical runway lamp |
| CN105020678B (en) * | 2015-08-04 | 2017-10-13 | 珠海金晟照明科技有限公司 | Lens unit, lens subassembly and road lamp cap |
| CN109681792A (en) * | 2017-10-18 | 2019-04-26 | 鸿富锦精密工业（深圳）有限公司 | LED backlight mould group |
| CN112285812A (en) * | 2019-07-22 | 2021-01-29 | 瑞识科技（深圳）有限公司 | Lens and VCSEL device adopting same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201795422U (en) * | 2010-02-05 | 2011-04-13 | 上海古森实业有限公司 | Free curved lens of LED desk lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100378488C (en) * | 2005-07-21 | 2008-04-02 | 香港理工大学 | Inner lens of lateral transmitting light-emitting diode light source |
| CN101440928A (en) * | 2007-11-19 | 2009-05-27 | 胡晓兵 | Free curved surface lens |
| DE202009013114U1 (en) * | 2009-09-29 | 2009-12-17 | Honeywell Airport Systems Gmbh | Inset Light |
| CN101713516B (en) * | 2009-11-19 | 2014-04-16 | 上海澳星照明电器制造有限公司 | LED lamp secondary optical lens and lens module |
| CN102563533A (en) * | 2010-12-31 | 2012-07-11 | 海洋王照明科技股份有限公司 | Reflector and alarm lamp with reflector |
| CN202835178U (en) * | 2012-04-25 | 2013-03-27 | 扬州雷笛克光学有限公司 | Luminous diode optical lens |
| CN102705775A (en) * | 2012-04-28 | 2012-10-03 | 深圳市兆驰股份有限公司 | Led light source module and lens thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201795422U (en) * | 2010-02-05 | 2011-04-13 | 上海古森实业有限公司 | Free curved lens of LED desk lamp |
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