CN102818218A - Secondary optical lens, light-emitting device and guardrail lamp - Google Patents
Secondary optical lens, light-emitting device and guardrail lamp Download PDFInfo
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- CN102818218A CN102818218A CN2012103344346A CN201210334434A CN102818218A CN 102818218 A CN102818218 A CN 102818218A CN 2012103344346 A CN2012103344346 A CN 2012103344346A CN 201210334434 A CN201210334434 A CN 201210334434A CN 102818218 A CN102818218 A CN 102818218A
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Abstract
The invention discloses a secondary optical lens, a light-emitting device and a guardrail lamp. The secondary optical lens comprises a light-inlet surface and a free light-outlet curved surface. The axis of the light-inlet surface coincides with the optical axis of a light source. In the horizontal direction, after light incident through the light-inlet surface undergoes refraction of the free light-outlet curved surface, the following light distribution conditions are met: theta1 is an included angle between incident light and the optical axis and meets the equation that minus 90 degrees <= theta1<=90 degrees, and theta2 is an included angle between emergent light and the optical axis and meets the equation that minus 60 degrees <= theta2<=60 degrees. The angle of the optical axis in the counter-clockwise direction is minus, the angle of the optical axis in the clockwise direction is positive, the light distribution angle in the horizontal direction is 120 degrees and is large, and the range of road surface illumination is wide. The light-emitting device comprises the secondary optical lens and the light source. The guardrail lamp comprises the light-emitting device, a heat dissipation plate, a lens hood and a transparent lamp shade.
Description
Technical field
The present invention relates to lighting field, particularly relate to a kind of secondary optical lens, light-emitting device and guard rail lamp.
Background technology
Guard rail lamp is a kind of lighting that is installed on road and the bridge both sides guardrail; Usually with fluorescent tube or LED as light source; Be used to replace high pole street lamp to different kinds of roads and bridge illumination, comprise runway illumination, pavement illumination and the parking lot illumination etc. of highway illumination, viaduct and access bridge illumination, bridge illumination, airport and high ferro inlet.The characteristics of the guard rail lamp of good illumination effect are: setting height(from bottom) is lower, is generally about 1 meter to 1.2 meters according to national standard; Irradiation distance is distant, generally needs at least 1 track of irradiation or above width of roadway; The road surface scope of illumination is wider, could obtain whole road surface like this and throw light on uniformly.
Patent CN102374486A discloses a kind of total reflection lens of guard rail lamp, and is as shown in Figure 1.These lens are by a rear end face 21, one and said rear end face 21 relative front end face 22 and the side between said front end face and rear end face 23; Has an accepting groove 211 on the said rear end face 21; The inwall of this accepting groove 211 is the incidence surface 212 of said guard rail lamp lens 20; Be formed with first exiting surface 221 of said guard rail lamp lens 20 on the said front end face 22; Said side 23 comprises near first side 231 of guard rail lamp lens top side with near second side 232 of guard rail lamp lens 20 bottom sides; Said first side 231 is first reflective surface of guard rail lamp lens, and said second side 232 comprises second exiting surface 2321 and second reflective surface 2322 between said second exiting surface 2321 and front end face 22 near rear end face 21.
When those skilled in the art use the total reflection lens of above-mentioned guard rail lamp that light source is carried out luminous intensity distribution, find to have following shortcoming:
At first, incident ray is through smaller through the light and the horizontal angle of 221 outputs of first exiting surface again after first reflective surface 231 and 2322 reflections of second reflective surface.Through answering of its emergent ray retouched and can be known, the emergent ray of allowable angle of inclination and horizontal angle approximately have only 38 °.In addition, because this total reflection lens has adopted the structure of two reflective surfaces up and down, can know that they can not be above 38 ° in the luminous intensity distribution angle that is parallel to road direction.
Therefore; Light source is through behind the above-mentioned guard rail lamp total reflection lens luminous intensity distribution, and output beam is narrow in the luminous intensity distribution angle that is parallel to road direction, in order to satisfy lighting demand; The gap ratio that guard rail lamp is installed is less; Promptly need install guard rail lamp to such an extent that closelyer could obtain even light distribution on the road surface, installation cost be high, the waste electric power resource;
Secondly,, when the spacing that guard rail lamp is installed is distant, can occur being similar to a rule light belt of zebra-stripe on the road, can not evenly throw light on if adopt powerful light source.
Summary of the invention
In view of this, the invention provides a kind of secondary optical lens, light-emitting device and guard rail lamp, the luminous intensity distribution angle on the horizontal direction is bigger, can obtain on a large scale road lighting uniformly.
A kind of secondary optical lens, said lens comprise:
Incidence surface and free bright dipping curved surface;
The axis of said incidence surface and the optical axis coincidence of light source;
On the horizontal direction, after the free bright dipping curved surface refraction of light process through incidence surface incident, satisfy following luminous intensity distribution condition:
θ
1Be the angle of incident light and optical axis ,-90 °≤θ
1≤90 °, θ
2Be the angle of emergent light and optical axis ,-60 °≤θ
2≤60 °;
Wherein, the anticlockwise angle of optical axis is for negative, and the clockwise angle of optical axis is for just.
Preferably, said lens further comprise:
First bottom surface and second bottom surface;
Said first bottom surface and second bottom surface are on the plane vertical with optical axis, between incidence surface and the free exiting surface.
Preferably,
Said first bottom surface and second bottom surface are the plane.
Preferably,
Said first bottom surface and place, second bottom surface are provided with card base and groove.
Preferably,
Said card base is the cylinder of diameter 1.5mm;
Said groove is the inner cylinder face of diameter 8mm.
Preferably,
Said lens material be Merlon (Polycarbonate, PC), polyethylene (Polyethylene, PE) or polymethyl methacrylate (Polymethylmethacrylate, PMMA).
A kind of light-emitting device, said light-emitting device comprises:
Any described lens of light source and claim 1-6;
The dead in line of the optical axis of said light source and the incidence surface of said lens.
Preferably,
Said light source is: led light source.
A kind of guard rail lamp, said guard rail lamp comprises:
Claim 7-8 any described light-emitting device, heat sink, light shield and a Transparent lamp shade.
Preferably,
The adjustable elevation coverage of said guard rail lamp is 0 °-30 °.
Can know that by foregoing the present invention has following beneficial effect:
On the horizontal direction, satisfy following condition behind the incident ray process secondary optical lens luminous intensity distribution:
θ
1Be the angle of incident light and optical axis ,-90 °≤θ
1≤90 °, θ
2Be the angle of emergent light and optical axis ,-60 °≤θ
2≤60 °, hence one can see that, and incident ray is through behind the said secondary optical lens luminous intensity distribution, and the angle of emergent ray and optical axis is in-60 ° ~ 60 ° scopes, that is, the luminous intensity distribution angle on the horizontal direction is 120 °, and the luminous intensity distribution angle is big, and the scope on irradiation road surface is wide.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the profile on a kind of secondary optical lens embodiment one horizontal direction of the present invention;
Fig. 2 is the luminous intensity distribution sketch map of the free bright dipping curved surface 102 of single incident ray process secondary optical lens of the present invention on the horizontal direction;
Fig. 3 is the free bright dipping curved surface 102 of secondary optical lens of the present invention incidence angle θ behind the luminous intensity distribution in the horizontal direction
1With angle of emergence θ
2Graph of relation;
Fig. 4 is the free bright dipping curved surface 102 luminous intensity distribution sketch map in the horizontal direction of secondary optical lens of the present invention;
Fig. 5 is the secondary optical lens of the present invention Illumination Distribution on 1 meter lower road surface thereunder.
The specific embodiment
The invention discloses a kind of secondary optical lens, light-emitting device and guard rail lamp, behind the light process secondary optical lens luminous intensity distribution of light source output, the luminous intensity distribution angle is 120 ° in the horizontal direction, and the luminous intensity distribution angle is big, and the scope on irradiation road surface is wide.
Secondary optical lens provided by the present invention comprises incidence surface and free bright dipping curved surface, and the axis of said incidence surface and the optical axis coincidence of light source on the horizontal direction, after the free bright dipping curved surface refraction of light process through incidence surface incident, satisfy following luminous intensity distribution condition:
θ
1Be the angle of incident light and optical axis ,-90 °≤θ
1≤90 °, θ
2Be the angle of emergent light and optical axis ,-60 °≤θ
2≤60 °, wherein, the anticlockwise angle of optical axis is for negative, and the clockwise angle of optical axis is for just.
Light-emitting device provided by the present invention comprises: secondary optical lens provided by the present invention and light source, the dead in line of the optical axis of said light source and the incidence surface of said lens.
Guard rail lamp provided by the present invention comprises light-emitting device provided by the present invention, heat sink, light shield and Transparent lamp shade.
Be elaborated below in conjunction with accompanying drawing.Among the following stated embodiment, the anticlockwise angle of optical axis is for negative, and the clockwise angle of optical axis is for just.
Embodiment one
Shown in Figure 1 is the profile on a kind of secondary optical lens embodiment one horizontal direction of the present invention.
Said secondary optical lens comprises: incidence surface 101 and free bright dipping curved surface 102.The axis of said incidence surface 101 and the optical axis coincidence of light source.
Light from light source center penetrates after the plane of incidence 101, incides on the free bright dipping curved surface 102, reflects away again.Because the axis of incidence surface 101 and the optical axis coincidence of light source, therefore, incident light is behind the process plane of incidence, and the direction of propagation of light does not change.
Wherein, there are one first bottom surface 103 and 104, two of second bottom surfaces to be provided with groove above the bottom surface between the plane of incidence 101 and free bright dipping curved surface 102 the right and lefts.Because the optical axis of light source and the dead in line of the plane of incidence, therefore, 103, the second bottom surfaces 104, first bottom surface and the groove that is provided with are inoperative to luminous intensity distribution, just conveniently install and fix.Following luminous intensity distribution accompanying drawing all carries out the luminous intensity distribution explanation with the secondary optical lens that has 103, the second bottom surfaces 104, first bottom surface and groove is set.
On the horizontal direction, after the free bright dipping curved surface refraction of light process through incidence surface incident, satisfy following luminous intensity distribution condition:
θ
1Be the angle of incident light and optical axis ,-90 °≤θ
1≤90 °, θ
2Be the angle of emergent light and optical axis ,-60 °≤θ
2≤60 °;
Wherein, the anticlockwise angle of optical axis is for negative, and the clockwise angle of optical axis is for just.
Shown in Figure 2 is the luminous intensity distribution sketch map of the free bright dipping curved surface 102 of single incident ray process secondary optical lens of the present invention on the horizontal direction.
On the horizontal direction, the light that light source sends is through incidence surface 101, and inciding the light of free bright dipping curved surface 102 and the angle of optical axis OZ is θ
1, light that penetrates behind free bright dipping curved surface 102 luminous intensity distributions of process and the angle of optical axis OZ are θ
2Suppose that light is negative toward optical axis counter clockwise direction incident angle; Light toward optical axis clockwise direction incident angle for just.Angle of emergence θ then
2With incidence angle θ
1Between satisfy the luminous intensity distribution condition of formula (1).
As shown in Figure 3, the free bright dipping curved surface 102 of secondary optical lens of the present invention is incidence angle θ behind the luminous intensity distribution in the horizontal direction
1With angle of emergence θ
2Graph of relation.Incidence angle θ when rim ray
1During for-90 °, the angle of emergence θ of its emergent ray
2Be-60 °; Incidence angle θ when rim ray
1When being 90 °, the angle of emergence θ of its emergent ray
2It is 60 °.The angle theta of incident ray and optical axis OZ
1Be distributed in-90 °≤θ
5Between≤90 °, the angle theta of its emergent ray and optical axis OZ
2Be evenly distributed in-60 °≤θ
6Between≤60 °.
As shown in Figure 4, the free bright dipping curved surface 102 luminous intensity distribution sketch map in the horizontal direction of secondary optical lens of the present invention incides light on the free bright dipping curved surface 102 through behind free bright dipping curved surface 102 luminous intensity distributions, the angle theta of emergent ray and optical axis OZ
2Be evenly distributed in-60 °≤θ
6Between≤60 °, promptly the luminous intensity distribution angle on the horizontal direction is 120 °, with street lamp suitable along the beam angle of road direction, thereby can reach the purpose that replaces high pole street lamp.
The material of making secondary optical lens can be Merlon (Polycarbonate, PC), polyethylene (Polyethylene, PE) or polymethyl methacrylate (Polymethylmethacrylate, PMMA) etc.
Preferably, among the present invention the employed material of secondary optical lens be Merlon (Polycarbonate, PC).
Shown in Figure 5 is secondary optical lens of the present invention is the Illumination Distribution on 1 meter lower road surface thereunder.Can find out that because the luminous intensity distribution angle of secondary optical lens direction along the road surface is 120 °, the range of exposures of hot spot is very wide, along the length direction on road surface, the distribution of hot spot has surpassed 15 meters, and along the width on road surface, the distribution of hot spot has surpassed 8 meters.
Can know that by foregoing the present invention has following beneficial effect:
On the horizontal direction, secondary optical lens satisfies following luminous intensity distribution condition:
θ
1Be the angle of incident light and optical axis ,-90 °≤θ
1≤90 °, θ
2Be the angle of emergent light and optical axis ,-60 °≤θ
2≤60 °, hence one can see that, and incident ray is through behind the said secondary optical lens luminous intensity distribution; The angle of emergent ray and optical axis is in-60 ° ~ 60 ° scopes, that is, the luminous intensity distribution angle on the horizontal direction is 120 °; The luminous intensity distribution angle is big, and the scope on irradiation road surface is wide, can reach the purpose that replaces high pole street lamp.
Embodiment two
A kind of light-emitting device, said light-emitting device comprise embodiment one described secondary optical lens and light source, the dead in line of the optical axis of said light source and the incidence surface of said lens.
Preferably, light source is LED, and the model of LED is CREE XPE, and single led luminous flux is 90lumen, and on the horizontal direction, behind the light process secondary optical lens luminous intensity distribution that LED sent, the luminous intensity distribution angle is 120 °.
Carried out detailed explanation among the luminous intensity distribution embodiment one on the secondary optical lens horizontal direction, repeated no more here.
Embodiment three
A kind of guard rail lamp, said guard rail lamp comprises: embodiment two described light-emitting devices, heat sink, light shield and Transparent lamp shade.
Light source is installed on the heat sink of vertical direction placement; The dead in line of the optical axis of light source and the incidence surface of secondary optical lens, the relative position according to itself and light source of secondary optical lens fastens light source; There is a shadow shield of eliminating veiling glare the top of secondary optical lens, can block the veiling glare that causes dazzle to top outgoing meeting; There is a transparent lampshade in secondary optical lens the place ahead together with the below, can see through the emergent ray of directive dead ahead and below.
Whole guard rail lamp can be according to the width adjusting angle of pitch on road surface, and adjustable range is 0 ° ~ 30 °.For example when guard rail lamp was used to illuminate the road surface in 3 tracks, its road surface was than broad, and guard rail lamp can be to 0 ~ 5 ° of adjusted; And when guard rail lamp was used to throw light on the road surface in 1 track, its road surface was narrow, and guard rail lamp can be regulated 25 ° ~ 30 ° downwards.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a secondary optical lens is characterized in that, said lens comprise:
Incidence surface and free bright dipping curved surface;
The axis of said incidence surface and the optical axis coincidence of light source;
On the horizontal direction, after the free bright dipping curved surface refraction of light process through incidence surface incident, satisfy following luminous intensity distribution condition:
θ
1Be the angle of incident light and optical axis ,-90 °≤θ
1≤90 °, θ
2Be the angle of emergent light and optical axis ,-60 °≤θ
2≤60 °;
Wherein, the anticlockwise angle of optical axis is for negative, and the clockwise angle of optical axis is for just.
2. lens according to claim 1 is characterized in that, said lens further comprise:
First bottom surface and second bottom surface;
Said first bottom surface and second bottom surface are on the plane vertical with optical axis, between incidence surface and the free exiting surface.
3. lens according to claim 2 is characterized in that, said first bottom surface and second bottom surface are the plane.
4. lens according to claim 2 is characterized in that, said first bottom surface and place, second bottom surface are provided with card base and groove.
5. lens according to claim 4 is characterized in that,
Said card base is the cylinder of diameter 1.5mm;
Said groove is the inner cylinder face of diameter 8mm.
6. according to the lens of claim 1, it is characterized in that,
Said lens material be Merlon (Polycarbonate, PC), polyethylene (Polyethylene, PE) or polymethyl methacrylate (Polymethylmethacrylate, PMMA).
7. a light-emitting device is characterized in that, said light-emitting device comprises: any described lens of light source and claim 1-6;
The dead in line of the optical axis of said light source and the incidence surface of said lens.
8. light-emitting device according to claim 7 is characterized in that said light source is: led light source.
9. a guard rail lamp is characterized in that, said guard rail lamp comprises: claim 7-8 any described light-emitting device, heat sink, light shield and a Transparent lamp shade.
10. guard rail lamp according to claim 9 is characterized in that, the adjustable elevation coverage of said guard rail lamp is 0 °-30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210334434.6A CN102818218B (en) | 2012-09-11 | 2012-09-11 | Secondary optical lens, light-emitting device and guardrail lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210334434.6A CN102818218B (en) | 2012-09-11 | 2012-09-11 | Secondary optical lens, light-emitting device and guardrail lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102818218A true CN102818218A (en) | 2012-12-12 |
| CN102818218B CN102818218B (en) | 2014-07-09 |
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|---|---|---|---|
| CN201210334434.6A Expired - Fee Related CN102818218B (en) | 2012-09-11 | 2012-09-11 | Secondary optical lens, light-emitting device and guardrail lamp |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557459A (en) * | 2013-11-06 | 2014-02-05 | 郑州中原显示技术有限公司 | Three-primary color LED (light emitting diode) lamp with different lighting surfaces |
| CN104676463A (en) * | 2013-11-29 | 2015-06-03 | 苏州欧普照明有限公司 | Lens and illuminating apparatus including the lens |
| WO2015109891A1 (en) * | 2014-01-22 | 2015-07-30 | 宏力照明集团有限公司 | Light distribution method for cob module led streetlamp lens capable of illuminating 3-5 lanes |
| CN106594580A (en) * | 2016-10-21 | 2017-04-26 | 众普森科技（株洲）有限公司 | High-heat-dissipation LED road lamp with feature of light distribution in combinational manner |
| CN108150894A (en) * | 2018-01-10 | 2018-06-12 | 广东德洛斯照明工业有限公司 | A kind of narrow angle Windowsill lamp lens of light chopping and Windowsill lamp |
| CN110544740A (en) * | 2018-05-29 | 2019-12-06 | 蔡昇龙 | LED device with projection pattern |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329033A (en) * | 2008-07-12 | 2008-12-24 | 鹤山丽得电子实业有限公司 | Light distribution lens of LED road lamp |
| JP2009152142A (en) * | 2007-12-21 | 2009-07-09 | Panasonic Electric Works Co Ltd | Light-emitting element unit, and surface light-emitting unit equipped with a plurality of these |
| US20100254145A1 (en) * | 2009-04-03 | 2010-10-07 | Panasonic Corporation | Lighting device |
| CN101922676A (en) * | 2009-06-09 | 2010-12-22 | 深圳市斯派克光电科技有限公司 | Large-angle secondary light-distribution lens of LED streetlamp and manufacturing method thereof |
-
2012
- 2012-09-11 CN CN201210334434.6A patent/CN102818218B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009152142A (en) * | 2007-12-21 | 2009-07-09 | Panasonic Electric Works Co Ltd | Light-emitting element unit, and surface light-emitting unit equipped with a plurality of these |
| CN101329033A (en) * | 2008-07-12 | 2008-12-24 | 鹤山丽得电子实业有限公司 | Light distribution lens of LED road lamp |
| US20100254145A1 (en) * | 2009-04-03 | 2010-10-07 | Panasonic Corporation | Lighting device |
| CN101922676A (en) * | 2009-06-09 | 2010-12-22 | 深圳市斯派克光电科技有限公司 | Large-angle secondary light-distribution lens of LED streetlamp and manufacturing method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557459A (en) * | 2013-11-06 | 2014-02-05 | 郑州中原显示技术有限公司 | Three-primary color LED (light emitting diode) lamp with different lighting surfaces |
| CN103557459B (en) * | 2013-11-06 | 2016-03-02 | 郑州中原显示技术有限公司 | The three-primary color LED lamp that light-emitting area is not identical |
| CN104676463A (en) * | 2013-11-29 | 2015-06-03 | 苏州欧普照明有限公司 | Lens and illuminating apparatus including the lens |
| WO2015109891A1 (en) * | 2014-01-22 | 2015-07-30 | 宏力照明集团有限公司 | Light distribution method for cob module led streetlamp lens capable of illuminating 3-5 lanes |
| US9638393B2 (en) | 2014-01-22 | 2017-05-02 | Hongli Lighting Group Co., Ltd. | Light distribution method for COB module LED street lamp lens capable of illuminating 3-5 lanes |
| CN106594580A (en) * | 2016-10-21 | 2017-04-26 | 众普森科技（株洲）有限公司 | High-heat-dissipation LED road lamp with feature of light distribution in combinational manner |
| CN108150894A (en) * | 2018-01-10 | 2018-06-12 | 广东德洛斯照明工业有限公司 | A kind of narrow angle Windowsill lamp lens of light chopping and Windowsill lamp |
| CN110544740A (en) * | 2018-05-29 | 2019-12-06 | 蔡昇龙 | LED device with projection pattern |
Also Published As
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