CN204494304U - A kind of light-distribution lens for power type LED lamp - Google Patents
A kind of light-distribution lens for power type LED lamp Download PDFInfo
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- CN204494304U CN204494304U CN201520113423.4U CN201520113423U CN204494304U CN 204494304 U CN204494304 U CN 204494304U CN 201520113423 U CN201520113423 U CN 201520113423U CN 204494304 U CN204494304 U CN 204494304U
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Abstract
For a light-distribution lens for power type LED lamp, relate to a kind of lens.The light of present power-type LED outgoing after light-distribution lens, all can produce yellow circle because of dispersion at hot spot edge.The utility model comprises lenticular body, the upper surface of described lenticular body is exiting surface, the lower surface of lenticular body is the incidence surface of indent, it is characterized in that: described incidence surface is provided with mixed light district, the light that LED chip is sent on the incidence surface of lens because of mixed light district pattern effect produce multiple reflections and refraction mixed light after shine outside lens.The light that the technical program makes LED send just shines outside lens after lens incidence surface experience multiple reflections and refraction, the result of multiple reflections and refraction mixes again after making the monochromatic light of different refractivity separately, improve mixed light degree, reach the object of color difference eliminating, not only can eliminate dispersion, the LED lens of large beam angle can also be made.
Description
Technical field
The utility model relates to a kind of lens, especially a kind of light-distribution lens for power type LED lamp.
Background technology
Since white light LEDs comes out, LED while as display device, starts to as lighting source future development.Because LED has the series of advantages such as environmental protection, specular removal, energy-conservation, long-life, be subject to the attention on government and illumination circle, technology improves quickly, most conventional light source has been exceeded at light efficiency, but as the application of illumination, most of occasion needs hundreds of, several thousand even luminous flux of several ten thousand lumens, this promotes LED to high-power future development.No matter be the mode using monolithic, or the mode of chip portfolio, finally all can cause the increase of light source luminescent area.
The light distribution of LED light source normally lambert's shape, this can not meet the requirement of various application scenario.Therefore configuration secondary optical system is all needed using LED as the light fixture of light source.Lens are secondary optical system elements that current application is the widest.Because light source area is large, spot light process can not be done.Its hot spot irradiated of LED that current application lens realize luminous intensity distribution there will be color fringe in edge zone, the most obvious with yellow.
The existence of this phenomenon have impact on the illuminating effect of LED, especially light quality is being required to high occasion impact is larger, so it have impact on the popularization of LED application surface.
Utility model content
The technical assignment of the technical problems to be solved in the utility model and proposition carries out improving to prior art and improves, and provides a kind of light-distribution lens for power type LED lamp, to reach the object reducing hot spot dispersion.For this reason, the utility model takes following technical scheme.
A kind of light-distribution lens for power type LED lamp, comprise lenticular body, the upper surface of described lenticular body is exiting surface, the lower surface of lenticular body is the incidence surface of indent, it is characterized in that: described incidence surface is provided with mixed light district, the light that LED chip is sent on the incidence surface of lens because of mixed light district pattern effect produce multiple reflections and refraction mixed light after shine outside lens.Lens are made up of optical glass or transparent plastic or transparent silica gel, and exiting surface can be quadratic surface or free form surface, and its size shape is determined by required emergent light spot shape.The incidence surface (namely towards the one side of LED light source) of lens lower surface, the size and shape of its female parts is determined by light source used, needs the light-emitting area holding LED.
Current white light LEDs issued light is the complementary colours white light of a kind of blue light and yellow light mix, blue light is different with the wavelength of gold-tinted, they are when by same medium, refractive index is different, the optical index of wavelength length is low, the short optical index of wavelength is high, and the refractive index of blue light is slightly larger than the refractive index of gold-tinted.When the white light that a branch of LED sends injects certain transparent medium with same incidence angle, the deviation angle of gold-tinted is less than the deviation angle of blue light, and blue light and gold-tinted will separate, and cause dispersion.In region, lens centre, the light that multiple luminous point sends has the light of dispersion through lens injection, but due to multiple spot dispersed light overlapped, so do not observe dispersion, but in edge zone, because of cannot be overlapping and form dispersion band.
In technical solutions of the utility model, the light that the existence of lens incidence surface pattern makes LED send just shines outside lens after lens incidence surface experience multiple reflections and refraction, mixes again after the result of multiple reflections and refraction makes the monochromatic light of different refractivity separately; Improve mixed light degree, reach the object of color difference eliminating.Not only can eliminate dispersion, the LED lens of large beam angle can also be made.
As improving further and supplementing technique scheme, the utility model also comprises following additional technical feature.
Described mixed light district pattern is scribing a little or scribing wire casing of indent, and incidence surface all or locally arranges mixed light district.The incidence surface of described indent there is a mixed light district can evenly or partly be arranged on incidence surface.The mixed light district pattern that described lens incidence surface is scribed can be parallel straight line, also can be actiniform straight line, also can be the arrangement of hemisphere, rhombogen.Pattern can be distributed in whole inner surface, also can only be distributed on portion inner surface.
Described incidence surface is the conical surface of indent, cylinder or hemisphere face.But its top can be smooth arc surface, smooth arc surface is just in time positioned at a zonule (conical top circular arc sector) the not pattern-making in light source dead ahead, is conducive to improving light extraction efficiency.
Mixed light district pattern, for scribing wire casing, scribes that wire casing is parallel to be located on incidence surface; Or be radially located on incidence surface; Or be located on incidence surface in intertexture shape.
The bottom ovalize of described incidence surface, it upwards shrinks the incidence surface forming fovea superior gradually.Described scribes wire casing and scribes the equal semicircular in shape of cross section a little.Diameter is 0.2-0.6mm.
The top of incidence surface is shiny surface, and what the bottom of incidence surface was provided with many axial arrangings scribes wire casing.Scribing the wire casing degree of depth is 0.4-0.6mm, line pitch 0.4-1.2mm.
Described incidence surface is inner concave conical, and the vertex of a cone is smooth arc surface, and what the conical surface was scribed radial arrangement scribes wire casing.
Scribing the wire casing degree of depth is 0.4-0.6mm, the whole conical surface is uniform be greater than 40 scribe wire casing; Smooth arc surface diameter is 20mm.
The top of incidence surface is shiny surface, and the bottom of incidence surface is established and scribed a little; Described scribe hemisphere a little in indent or rhombogen.On incidence surface, mixed light district scribes the shape difference of figure, different rising angles and different light distribution can be reached, as same area source, same lens, if be the pattern selecting radioactive ray arranged in a straight line on exiting surface, accessible beam angle is about 140 degree.And select hemisphere pattern, can reach beam angle is about 120 degree.If same light source, in order to all reach same light mixing effect.For the lens of the narrow and small class in inner space, exiting surface comparable steepness, when the exiting surface slope of curve is greater than 45 degree, solves by scribing radioactive ray straight line on exiting surface; Relatively roomy for inner space, exiting surface relatively flat type, when the exiting surface slope of curve is less than 45 degree, by carving hemisphere on exiting surface, rhombus class particle arrangement shape pattern solves.
Beneficial effect: the light that the existence of incidence surface pattern makes LED send just shines outside lens after inner lens surfaces experience multiple reflections and refraction, mixes after the result of multiple reflections and refraction makes the monochromatic light of different refractivity separately; Improve mixed light degree, reach the object eliminating dispersion, also can help to adjust light distribution.
Accompanying drawing explanation
Fig. 1 is the utility model LED lens light beam refraction diagram.
Fig. 2 (a) is the first incidence surface pictorial diagram of the utility model.
Fig. 2 (b) is the utility model the second incidence surface pictorial diagram.
Fig. 2 (c) is the third incidence surface pictorial diagram of the utility model.
Fig. 2 (d) is the utility model the 4th kind of incidence surface pictorial diagram.
Fig. 3 (a) is that the lens that the utility model makes partly cut open structural representation.
Fig. 3 (b) be Fig. 3 (a) look up structural representation.
In figure: 1-lens; 101-exiting surface; 102-incidence surface; 103-mixed light district; 104-scribes a little; 105-scribes wire casing; 2-white light beam; 3-blue light; 4-gold-tinted.
Detailed description of the invention
Below in conjunction with Figure of description, the technical solution of the utility model is described in further detail.
As Fig. 2 (a)-(d), 3(a)-(b) shown in, the utility model comprises lenticular body, the upper surface of described lenticular body is exiting surface 101, the lower surface of lenticular body is the incidence surface 102 of indent, and the mixed light district 103 that described incidence surface 102 is provided with indent forms the light that the incidence surface 102 with indent pattern makes LED chip send and shines outside lens 1 after the incidence surface 102 of lens 1 experiences multiple reflections and refraction mixed light.What described mixed light district 103 was indent scribe a little 104 or scribe wire casing 105, and mixed light district 103 evenly or is partly arranged on incidence surface 102.Incidence surface 102 is the conical surface of indent, cylinder or hemisphere face.
As shown in Figure 2 (a) shows, mixed light district 103 is for scribing wire casing 105, and it is parallel is located on incidence surface 102; Or be radially located on incidence surface 102, as shown in Fig. 2 (b); Or be located on incidence surface 102 in intertexture shape, as shown in Figure 2 (d) shows; As shown in Figure 2 (c), mixed light district 103 scribes a little 104 for hemispheric.Described scribes wire casing 105 and the equal semicircular in shape of cross section scribing a little 104.
Mixed light district 103 shape is different, and can reach different rising angles and light distribution, as same area source, same lens 1, if be the pattern selecting radioactive ray arranged in a straight line on exiting surface 101, accessible beam angle is about 140 degree.And select hemisphere pattern, can reach beam angle is about 120 degree.If same light source, in order to all reach same light mixing effect.For the lens 1 of the narrow and small class in inner space, exiting surface 101 comparable steepness, solves by scribing radioactive ray straight line on exiting surface 101; Relatively roomy for inner space, exiting surface 101 relatively flat type, by carving hemisphere on exiting surface 101, rhombus class particle arrangement shape pattern solves.
For improving light extraction efficiency, the top of incidence surface 102 is shiny surface, and the bottom of incidence surface 102 is established and scribed a little 104.
The light that the existence of pattern makes LED send just shines outside lens 1 after lens 1 inner surface experience multiple reflections and refraction, and the result repeatedly reflected mixes again after making the monochromatic light of different refractivity separately.Current white light LEDs the white light beam 2 sent out are complementary colours white lights that a kind of blue light 3 and gold-tinted 4 mix, the wavelength that blue light 3 closes gold-tinted 4 is different, they are when by same medium, refractive index is different, the optical index of wavelength length is low, the short optical index of wavelength is high, and the refractive index of blue light 3 is slightly larger than the refractive index of gold-tinted 4.When a branch of LED white light 2 injects certain transparent medium with same incidence angle, blue light 3 and gold-tinted 4 will separate, and the deviation angle of gold-tinted 4 is just little, causes dispersion.In central area, the photochromic astigmatism that multiple luminous point sends is overlapped, so do not observe dispersion, but in edge zone, because of cannot be overlapping and form dispersion band.The technical program, on the incidence surface 102 of lens 1, chiseling pattern forms mixed light district, the light that LED is sent repeatedly reflects in lens 1 inner surface experience and improves mixed light degree, reach the object eliminating dispersion, quote the method for lens 1 inner surface chiseling pattern, not only can eliminate dispersion, the LED lens 1 of large beam angle can also be made, as shown in Figure 1.
Below to make a 50wLED street lamp lens 1, illustrate.
As Fig. 3 (a), 3(b) shown in, adopt optical glass to make the raw material of lens 1, the profile of lens 1 adopts free form surface form, and there is a taper indent medial surface center, the bottom ovalize of incidence surface 102, it upwards shrinks the incidence surface 102 forming fovea superior gradually.The top of incidence surface 102 is shiny surface, and what the bottom of incidence surface 102 was provided with many axial arrangings scribes wire casing 105.
The vertex of a cone is a diameter be the small arc-shaped of 20mm, the diameter 0.5mm at the cone end, what the conical surface was scribed radial arrangement scribes wire casing 105, and streak height is 0.5mm, uniform 42 of the whole conical surface.A zonule female cone top arc region not pattern-making in light source dead ahead, is conducive to improving light extraction efficiency.
Above Fig. 1,2(a)-(d), 3(a)-(b) shown in a kind of light-distribution lens for power type LED lamp be specific embodiment of the utility model; the outstanding substantive distinguishing features of the utility model and marked improvement are embodied; can according to the use needs of reality; under enlightenment of the present utility model; it is carried out to the equivalent modifications of the aspect such as shape, structure, all at the row of the protection domain of this programme.
Claims (10)
1. the light-distribution lens for power type LED lamp, comprise lenticular body, the upper surface of described lenticular body is exiting surface (101), the lower surface of lenticular body is the incidence surface (102) of indent, it is characterized in that: described incidence surface (102) is provided with mixed light district (103) and is formed and have the incidence surface (102) of indent pattern, the light that LED chip is sent on the incidence surface of lenticular body (102) because of the effect of mixed light district (103) pattern produce multiple reflections and refraction mixed light after shine outside lenticular body.
2. a kind of light-distribution lens for power type LED lamp according to claim 1, it is characterized in that: described mixed light district (103) pattern is scribing point (104) or scribing wire casing (105) of indent, incidence surface (102) all or locally arranges mixed light district (103).
3. a kind of light-distribution lens for power type LED lamp according to claim 2, is characterized in that: the conical surface, cylinder or hemisphere face that described incidence surface (102) is indent, its top is smooth arc surface.
4. a kind of light-distribution lens for power type LED lamp according to claim 2, is characterized in that: mixed light district (103) pattern, for scribing wire casing (105), scribes that wire casing (105) is parallel to be located on incidence surface (102); Or be radially located on incidence surface (102); Or be located on incidence surface (102) in intertexture shape.
5. a kind of light-distribution lens for power type LED lamp according to claim 4, is characterized in that: the bottom ovalize of described incidence surface (102), and it upwards shrinks the incidence surface (102) forming fovea superior gradually.
6. a kind of light-distribution lens for power type LED lamp according to claim 2, is characterized in that: the described equal semicircular in shape of cross section scribed wire casing (105) and scribe point (104).
7. a kind of light-distribution lens for power type LED lamp according to the arbitrary claim of claim 2-6, is characterized in that: the top of incidence surface (102) is shiny surface, and what the bottom of incidence surface (102) was provided with many axial arrangings scribes wire casing (105).
8. a kind of light-distribution lens for power type LED lamp according to claim 7, is characterized in that: described incidence surface (102) is in inner concave conical, and the vertex of a cone is smooth arc surface, and what the conical surface was scribed radial arrangement scribes wire casing (105).
9. a kind of light-distribution lens for power type LED lamp according to claim 8, is characterized in that: scribing wire casing (105) degree of depth is 0.4-0.6mm, the whole conical surface is uniform be greater than 40 scribe wire casing (105); Smooth arc surface diameter is 20mm.
10. a kind of light-distribution lens for power type LED lamp according to the arbitrary claim of claim 2-6, is characterized in that: the top of incidence surface (102) is shiny surface, and the bottom of incidence surface (102) is established and scribed point (104); Described scribe the hemisphere of point (104) in indent or rhombogen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520113423.4U CN204494304U (en) | 2015-02-17 | 2015-02-17 | A kind of light-distribution lens for power type LED lamp |
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| CN201520113423.4U CN204494304U (en) | 2015-02-17 | 2015-02-17 | A kind of light-distribution lens for power type LED lamp |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633594A (en) * | 2015-02-17 | 2015-05-20 | 宁波石上光电科技有限公司 | Grading lens used for power type LED lamp |
| WO2017059643A1 (en) * | 2015-10-09 | 2017-04-13 | 瑞仪光电(苏州)有限公司 | Light guide lens, light source module and display device |
| CN111237721A (en) * | 2018-11-29 | 2020-06-05 | 莫列斯有限公司 | Light-diffusing lens for light-emitting apparatus |
| EP3564579A4 (en) * | 2017-05-27 | 2020-07-01 | Suzhou Opple Lighting Co., Ltd. | Light distribution element, light source module and lighting device |
-
2015
- 2015-02-17 CN CN201520113423.4U patent/CN204494304U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633594A (en) * | 2015-02-17 | 2015-05-20 | 宁波石上光电科技有限公司 | Grading lens used for power type LED lamp |
| CN104633594B (en) * | 2015-02-17 | 2018-05-15 | 宁波石上光电科技有限公司 | A kind of light-distribution lens for power type LED lamp |
| WO2017059643A1 (en) * | 2015-10-09 | 2017-04-13 | 瑞仪光电(苏州)有限公司 | Light guide lens, light source module and display device |
| CN106568068A (en) * | 2015-10-09 | 2017-04-19 | 瑞仪光电(苏州)有限公司 | Light guiding lens and light source module |
| US20170336051A1 (en) * | 2015-10-09 | 2017-11-23 | Radiant Opto-Electronics (Suzhou) Co., Ltd | Light guide lens, light emitting module and display apparatus including the same |
| US10288256B2 (en) | 2015-10-09 | 2019-05-14 | Radiant Opto-Electronics (Suzhou) Co., Ltd. | Light guide lens, light emitting module and display apparatus including the same |
| EP3564579A4 (en) * | 2017-05-27 | 2020-07-01 | Suzhou Opple Lighting Co., Ltd. | Light distribution element, light source module and lighting device |
| CN111237721A (en) * | 2018-11-29 | 2020-06-05 | 莫列斯有限公司 | Light-diffusing lens for light-emitting apparatus |
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Address after: 315611 No. 19, three road, Taoyuan Street Branch, Ninghai County, Ningbo, Zhejiang. Patentee after: Ningbo Shi Shang Tianji Energy Co., Ltd. Address before: 315611 No. seven, three lane, Yan Hai Road, Qiaotou Hu Street, Ninghai County, Ningbo, Zhejiang Patentee before: EVERLITE LED LIGHTING CO., LIMITED |