CN102313245B - Light emitting diode (LED) lamp lens - Google Patents
Light emitting diode (LED) lamp lens Download PDFInfo
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- CN102313245B CN102313245B CN 201110267362 CN201110267362A CN102313245B CN 102313245 B CN102313245 B CN 102313245B CN 201110267362 CN201110267362 CN 201110267362 CN 201110267362 A CN201110267362 A CN 201110267362A CN 102313245 B CN102313245 B CN 102313245B
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- collimation lens
- thin plate
- led lamp
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Abstract
The invention discloses a light emitting diode (LED) lamp lens, which comprises a collimation lens, wherein the side face of the collimation lens is a total reflection face; a light outlet face of a sheet lens consists of convex faces of triangular convex lenses and concave faces of triangular concave lenses; and the collimation lens is provided with a refraction groove at an end plane opposite to the light outlet face of the collimation lens. Through the combination of the collimation lens and the sheet lens, the LED lamp lens is applicable to different LED chips and is more universal; and light which is emitted by the LED lamp lens is distributed uniformly and softer.
Description
Technical field
The present invention relates to a kind of LED lighting apparatus field, particularly a kind of LED lamp lens.
Background technology
Light emitting diode (Light-Emitting-Diode is called for short LED) is a kind of semiconductor that electric energy can be converted into luminous energy, and its core component is a led chip.
LED is as the light source of new generation that gets most of the attention, has that volume is little, luminous flux is big, all solid state work, compact conformation, green non-pollution, a plurality of advantages such as efficient, energy-conservation.But because its typical case goes out light characteristic is the half space Lambertian source, directly application causes shortcomings such as Luminance Distribution is unreasonable, dazzle easily, so all adopt the secondary light-distribution technology to carry out luminous intensity distribution again in the lamp applications usually, various LED optical lenses become optimal secondary light-distribution technology.
At present secondary light-distribution lens all adopts silica gel or Merlon (PC), making such as polymethacrylates (PMMA) the optical plastic material of etc.ing, by nonimaging optics design lens-shape, utilize optical effects such as refraction, reflection to change LED light and penetrate direction, the light source that LED sends is redistributed, thus the Illumination Distribution that obtains expecting.Common secondary light-distribution lens design needs to consider the characteristics of luminescence of chip itself, at different led chips or different LED encapsulation, because the chip light emitting characteristic there are differences, after changing chip, just need redesign to satisfy same illumination distribution requirements secondary optical lens, the versatility that is secondary optical lens has stronger limitation, cause in actual production process, need design different lens at different chips, this has just increased high lens die sinking cost, is unfavorable for generally applying.
In the prior art, the light distribution effect of the secondary light-distribution lens of LED light fixture neither be very desirable, causes the led light source that sends through the secondary light-distribution lens luminous intensity distribution still to have light dazzle, the uneven technical problem of distribution of light.
Publication number is that the Chinese patent application of CN 101943368A discloses a kind of LED collector lens, described lens are the truncated cone-shaped lens, the lens rear end face has columniform first refracted slot, its front end face has columniform second refracted slot, the lens lateral wall is a fully reflecting surface, the cell wall of first refracted slot and second refracted slot forms plane of refraction, it provides little, the high optically focused of a kind of beam divergence angle, the LED collector lens that light efficiency is high, has solved the uneven defective of non-circular hot spot, hot spot that LED forms in the prior art.But the limitation of secondary optical lens versatility, light dazzle, the inhomogeneous technical problem of distribution of light still exist.
Thereby, be necessary to provide a kind of high-powered LED lamp lens of improvement, there are dazzle and light problem pockety so that overcome the limitation problem and the led light source of light-distribution lens versatility in the prior art.
Summary of the invention
The invention provides a kind of LED lamp lens, by the combination of collimation lens and thin plate lens, make LED lamp lens be applicable to different led chips, versatility is wide, and the distribution of light of sending through LED lamp lens is even, light becomes soft.
A kind of LED lamp lens, comprise collimation lens, the side of described collimation lens is a fully reflecting surface, and the exiting surface of described collimation lens is provided with the thin plate lens, and the exiting surface of described thin plate lens is made up of lenticular convex surface of triangle convex surface and the lenticular concave surface of triangular shaped recess surface; Lenticular convex surface of described triangle convex surface and the lenticular concave surface of described triangular shaped recess surface be the exiting surface of collimation lens dorsad; Described collimation lens is provided with refracted slot at an end face relative with the exiting surface of collimation lens.
Described refracted slot is used to carry led chip on the one hand, is used on the other hand the light that LED sends is reflected.The light part that led chip sends pools the exiting surface of parallel rays vertically-guided collimation lens through the refraction of the bottom land of refracted slot, and then passes through the thin plate lens and penetrate; Another part light is injected collimation lens inside pools parallel rays vertically-guided collimation lens again after the total reflection effect of the side of collimation lens exiting surface through the refraction of the sidewall of described refracted slot, penetrate from the thin plate lens at last, obtain shining light wide, soft and that be evenly distributed.
In order to obtain better invention effect, below as preferred structure of the present invention:
Described collimation lens is truncated cone-shaped or approximate truncated cone-shaped, and the area of the exiting surface of described collimation lens is greater than the area of an end face relative with the exiting surface of collimation lens, be more conducive to the total reflection of light, also help the permutation and combination of collimation lens, be convenient to be placed in the lamp outer casing.
The side of described collimation lens is a smooth surface.Smooth surface is the reflecting effect that further strengthens the side of collimation lens on the basis of the full surface of emission at collimation lens, helps reducing light through the loss in the collimation lens process, has increased the light emission rate of LED lamp lens of the present invention.
The exiting surface of described collimation lens is a smooth flat; The incidence surface of described thin plate lens is a smooth flat.Be more conducive to the parallel thin plate lens that enter of parallel rays.
The incidence surface of the exiting surface of described collimation lens and described thin plate lens fits tightly; Perhaps, the exiting surface of described collimation lens is as the incidence surface of described thin plate lens.
Described refracted slot is cylindric, and refracted slot cylindraceous has increased the rising angle of led light source, helps the ejaculation of light.
The bottom land of described refracted slot is the convex surface of the exiting surface projection of described collimation lens dorsad, the convex surface bottom land can pool the light that led light source sends the exiting surface of parallel rays vertically-guided collimation lens through refraction action, help to reduce light because of repeatedly reflecting the light loss that causes, increased the light emission rate of collimation lens inner generation of collimation lens.
The exiting surface of described thin plate lens is made up of the lenticular convex surface of triangle convex surface of several same size and the staggered planar array that forms of closely arranging of the lenticular concave surface of triangular shaped recess surface of several same size.Described triangle convex surface lenticule can make through the light of thin plate lens and scatter the triangle hot spot that formation is different from circular light spot in the prior art direct the branch, described triangular shaped recess surface lenticule makes the light through thin plate lens intersect at a point earlier afterwards to divide and scatters formation triangle hot spot, simultaneously, the lenticular convex surface of triangle convex surface of several same size and the lenticular concave surface of triangular shaped recess surface of several same size are staggered closely the arrangement and form planar array, the effect of Pai Lieing is that the triangle irradiation area that each triangle convex surface lenticule of process and triangular shaped recess surface lenticule refraction originally forms has been carried out the stack of definite part like this, so neither influence the brightness of lamp, reach the effect that all even light of light irradiation becomes soft simultaneously.
Described thin plate lens can be corresponding one by one with collimation lens, and promptly the corresponding collimation lens of thin plate lens is combined into independently LED lamp lens, and a plurality of independently LED lamp lens solid matter of rationally cutting edge again forms array, is combined into LED lamp lens; Also can one the corresponding a plurality of collimation lenses of thin plate lens, described collimation lens can split be arranged the solid matter or combine of also can rationally cutting edge, and forms LED lamp lens.The LED lamp lens arrangement of above-mentioned various combination is in order to satisfy the lighting demand of different capacity.Described thin plate lens can carry out permutation and combination, side cut according to different demands with collimation lens, and such lens arrangement not only can satisfy the vast market demand, and can directly replace the lens in the existing illuminator again.Preferably, described thin plate lens are one, and described collimation lens is a plurality of, and when adopting the combination of this form, not only easier assembling, production cost are lower, and illuminating area is bigger, light is softer.
Described thin plate lens are circle or polygon etc., the thin plate lens can require to do corresponding modification (as cutting edge or integration) according to difference, so that satisfy the requirement of different environments for use and different installation requirements, not only can save cost, and increase certain sight can for light fixture itself.
The lateral surface of described LED lamp lens is provided with and is used for hook pin or a circle outer fixing with lamp housing, and convenient and lamp housing is fixed.
The thin plate lens can play the package panel effect as the LED light fixture directly as package lens, have saved material cost simultaneously, have reduced the light fixture price.
The material of collimation lens and thin plate lens can be selected transparent material for use, and concrete transparent material is PMMA plastics or PC plastics etc. preferably.
Compared with prior art, the present invention has following advantage:
Refracted slot of the present invention has reduced light because of repeatedly reflecting the light loss that causes inner generation of collimation lens, has increased the light emission rate and the rising angle that has increased led light source of collimation lens, helps the ejaculation of light.
The side of collimation lens of the present invention is a fully reflecting surface, helps reducing light through the loss in the collimation lens process, has increased the light emission rate of LED lamp lens of the present invention.
LED lamp lens of the present invention have overcome the general limitation defective of secondary light-distribution lens in the prior art, promptly at different LED chip or different rising angle, LED lamp lens of the present invention can realize satisfying the light distribution requirements of specific Illumination Distribution, make LED lamp lens of the present invention can be applicable to different led chips, improved its versatility greatly.
LED lamp lens of the present invention can realize that integrated lens also can carry out the separating purification design and promptly separate with collimation lens by the thin plate lens, both can realize compatibility, also can realize different illumination distribution design by changing the few thin plate lens of consumptive material for different chips; Simultaneously, refraction action by the thin plate lens be made up of triangle convex surface lenticule and triangular shaped recess surface lenticule has solved dazzle and light problem pockety, adopt the form of planar array further to increase led chip simultaneously and send the shadow surface scope of light source, thereby reach the effect that range of exposures is wide, light is soft and light is evenly distributed.
Description of drawings
Fig. 1 is the perspective view of LED lamp lens of the present invention;
Fig. 2 is the structural representation of collimation lens in the LED lamp lens of the present invention;
Fig. 3 is the structural representation of thin plate lens in the LED lamp lens of the present invention;
Fig. 4 is that the A of thin plate lens among Fig. 3 is to view;
Fig. 5 is that the B of thin plate lens among Fig. 3 is to view;
Fig. 6 closely arranges the structural representation of the LED lamp lens of formation for a plurality of collimation lenses of the present invention;
Fig. 7 is that the C of Fig. 6 is to view;
Fig. 8 closely arranges the another kind of structural representation of the LED lamp lens of formation for a plurality of collimation lenses of the present invention;
Fig. 9 is that the D of Fig. 8 is to view;
Figure 10 arranges the structural representation of the LED lamp lens that form for a plurality of collimation lens splits of the present invention;
Figure 11 closely arranges the structural representation of the LED lamp lens of formation for a plurality of LED lens of the present invention;
Figure 12 is the light path schematic diagram of LED lamp lens of the present invention;
The hot spot design sketch that Figure 13 forms through the triangle convex surface lenticule in the thin plate lens of the present invention for light;
Wherein, in Fig. 1～12,1 is the thin plate lens, 2 is triangle convex surface lenticule, and 3 is the triangular shaped recess surface lenticule, and 4 is collimation lens, 5 is refracted slot, and 6 is the bottom land of refracted slot, and 7 is the side of collimation lens, 8 is the exiting surface of collimation lens, and 9 is the incidence surface of thin plate lens, and 10 is connecting portion, 11 is led chip, 12 is the hook pin, and 13 is first light path, and 14 is second light path.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, be LED lamp lens of the present invention, comprise the collimation lens 4 of truncated cone-shaped or approximate truncated cone-shaped; The side 7 of collimation lens 4 is a fully reflecting surface, and the exiting surface 8 of collimation lens 4 is provided with thin plate lens 1, and collimation lens 4 is provided with refracted slot 5 at an end face relative with the exiting surface 8 of collimation lens 4; The area of the exiting surface 8 of collimation lens 4 is greater than the area of an end face relative with the exiting surface 8 of collimation lens 4.
As Fig. 3, Fig. 4, shown in Figure 5, the incidence surface 9 of thin plate lens 1 is a smooth flat, and the exiting surface of thin plate lens 1 is formed by the convex surface of the triangle convex surface lenticule 2 of several same size with by the concave surface of the triangular shaped recess surface lenticule 3 of several same size; The convex surface of triangle convex surface lenticule 2 and the concave surface of triangular shaped recess surface lenticule 3 be the exiting surface 8 of collimation lens 4 dorsad.The side 7 of collimation lens 4 is a smooth surface, and refracted slot 5 is cylindric, and the bottom land 6 of refracted slot 5 is the convex surface of exiting surface 8 projectioies of collimation lens 4 dorsad; Though non-smooth surface can be selected in the side 7 of collimation lens 4, refracted slot 5 also can ellipticity, the bottom land 6 of refracted slot 5 can be the plane, but the effect of the LED lamp lens of these selections all is not so good as the ideal of side 7, cylindric refracted slot 5 and the convex surface bottom land 6 of smooth surface.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, LED lamp lens of the present invention can adopt integrated mode to obtain, also can be at the exiting surface 8 and thin plate lens 1 split combination of collimation lens 4, the exiting surface 8 of collimation lens 4 and the incidence surface 9 of thin plate lens 1 all are smooth flat, can link together by connecting portion 10, be combined into one, connecting portion 10 can be selected to put or not tapping body adhesion substance, and the incidence surface 9 of thin plate lens 1 fits tightly the exiting surface 8 of collimation lens 4.
As Fig. 6, Fig. 7, Fig. 8, Fig. 9, shown in Figure 10, thin plate lens 1 are one, and collimation lens 4 is a plurality of.Promptly thin plate lens 1 can corresponding a plurality of collimation lenses 4, and collimation lens 4 can split be arranged also can rationally cut edge and closely arranged or combine, and forms LED lamp lens.The shape of thin plate lens 1 can be cut edge according to demand, and thin plate lens 1 can be selected circle, polygon etc.The polygon of thin plate lens 1 can be selected square, rectangle etc., to satisfy the lighting demand of different capacity.As Fig. 6, shown in Figure 7,3 collimation lenses 4 closely are arranged in together through reasonable side cut, form LED lamp lens, thin plate lens 1 side cut quadrate.As Fig. 8, shown in Figure 9,5 collimation lenses 4 closely are arranged in together through reasonable side cut, form LED lamp lens, and thin plate lens 1 are cut edge circular.As shown in figure 10,7 collimation lens 4 splits are arranged in together, form LED lamp lens, and thin plate lens 1 are cut edge circular.
As Fig. 8, shown in Figure 9, the lateral surface of LED lamp lens is provided with and is used for hook pin 12 or a circle outer fixing with lamp housing, and convenient and lamp housing is fixed.As shown in figure 10, thin plate lens 1 can play the package panel effect as the LED light fixture directly as package lens, have saved material cost simultaneously, have reduced the light fixture price.
As shown in figure 11, thin plate lens 1 also can be combined into independently LED lamp lens by corresponding collimation lens 4, each independently the LED lamp lens solid matter of rationally cutting edge again form array, form LED lamp lens.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included in protection scope of the present invention.
The concrete light path of LED lamp lens of the present invention moves towards as follows:
As Figure 12, led chip 11 is inserted refracted slot 5, the light part of led chip 11 pools the exiting surface of parallel rays vertically-guided collimation lens 4 through the refraction of the bottom land 6 of refracted slot 5, and then penetrates from thin plate lens 1, shown in first light path 13; Another part light is through injecting collimation lens 4 inside pool parallel rays vertically-guided collimation lens 4 again after the total reflection effect of the side 7 of collimation lens 4 exiting surface after the refraction of the sidewall of refracted slot 5, penetrate from thin plate lens 1 again, shown in second light path 14.First light path 13 and second light path 14 are passed through the thin plate lens of being made up of the triangular shaped recess surface lenticule 3 of the triangle convex surface lenticule 2 of several same size and several same size 1 at last and are penetrated, the radiation response that form the facula area equal and opposite in direction, is evenly distributed, the hot spot effect of triangle convex surface lenticule 2 as shown in figure 13, the hot spot effect basically identical of the hot spot effect of triangular shaped recess surface lenticule 3 and triangle convex surface lenticule 2 forms light soft and that be evenly distributed at last.
From Figure 13 hot spot design sketch, can see and be different from hot spot of the prior art, among the present invention is the triangle hot spot, because the refraction action of thin plate lens 1, originally the light source of concentrating is formed the triangle hot spot and afterwards divides the triangle hot spot that scatters formation handstand intersecting at a point earlier by each triangular shaped recess surface lenticule 3 scattering in 2 minutes by each triangle convex surface lenticule, light source by several same size triangle convex surface lenticule 2 and the triangular shaped recess surface lenticule 3 of several same size be staggered closely arrange the planar array that forms after, form the triangle hot spot (being single triangle irradiated region) of several direction unanimities, single triangle irradiation area has carried out the stack of definite part, thereby reach a brightness that neither influences lamp, the effect that makes all even light of light irradiation become soft simultaneously again.From Figure 13 curve map as can be known, even through the hot spot light that LED lamp lens of the present invention form, being applicable to has in indoor, the outdoor lighting of requirement the illumination uniformity.
Claims (7)
1. LED lamp lens comprise collimation lens (4), it is characterized in that, the side (7) of described collimation lens (4) is a fully reflecting surface; The exiting surface (8) of described collimation lens (4) is provided with thin plate lens (1), and the exiting surface of described thin plate lens (1) is made up of the staggered planar array that forms of closely arranging of the concave curved surface of the triangle concave curved surface lenticule (3) of the convex surface of the triangle convex surface lenticule (2) of several same size and several same size;
Described collimation lens (4) is provided with refracted slot (5) at an end face relative with the exiting surface (8) of collimation lens (4), described refracted slot (5) is cylindric, and the bottom land (6) of described refracted slot (5) is the convex surface of exiting surface (8) projection of described dorsad collimation lens (4);
Light forms the equally distributed triangle hot spot be different from prior art after by described collimation lens and thin plate lens.
2. LED lamp lens according to claim 1, it is characterized in that, described collimation lens (4) is truncated cone-shaped or approximate truncated cone-shaped, and the area of the exiting surface (8) of described collimation lens (4) is greater than the area of an end face relative with the exiting surface (8) of collimation lens (4).
3. LED lamp lens according to claim 1 is characterized in that, the side (7) of described collimation lens (4) is a smooth surface.
4. LED lamp lens according to claim 1 is characterized in that, the exiting surface (8) of described collimation lens (4) is a smooth flat;
The incidence surface (9) of described thin plate lens (1) is a smooth flat.
5. according to claim 1 or 4 described LED lamp lens, it is characterized in that the exiting surface (8) of described collimation lens (4) fits tightly with the incidence surface (9) of described thin plate lens (1);
Perhaps, the exiting surface (8) of described collimation lens (4) is as the incidence surface (9) of described thin plate lens (1).
6. LED lamp lens according to claim 1 is characterized in that described thin plate lens (1) are one, and described collimation lens (4) is a plurality of.
7. LED lamp lens according to claim 1 is characterized in that described thin plate lens (1) are circle or polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110267362 CN102313245B (en) | 2011-09-09 | 2011-09-09 | Light emitting diode (LED) lamp lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110267362 CN102313245B (en) | 2011-09-09 | 2011-09-09 | Light emitting diode (LED) lamp lens |
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| Publication Number | Publication Date |
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| CN102313245A CN102313245A (en) | 2012-01-11 |
| CN102313245B true CN102313245B (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110267362 Expired - Fee Related CN102313245B (en) | 2011-09-09 | 2011-09-09 | Light emitting diode (LED) lamp lens |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606930B (en) * | 2012-03-23 | 2014-05-07 | 中国科学院宁波材料技术与工程研究所湖州新能源产业创新中心 | Modularized LED (light emitting diode) lamp |
| CN102661575A (en) * | 2012-04-28 | 2012-09-12 | 北京星光影视设备科技股份有限公司 | Light condensation and guide post and LED (Light-Emitting Diode) spotlight thereof |
| CN103851546B (en) * | 2012-11-30 | 2017-07-14 | 深圳市海洋王照明工程有限公司 | Light-source structure and the runway alert lamp containing the light-source structure |
| CN105570832B (en) * | 2014-10-15 | 2019-05-17 | 比亚迪股份有限公司 | LED lens |
| CN106772978A (en) * | 2016-12-30 | 2017-05-31 | 宁波永新光学股份有限公司 | A kind of illuminated light microscope of LED reflection |
| CN107504453B (en) * | 2017-09-28 | 2023-11-14 | 赛尔富电子有限公司 | Light filtering lens, LED lamp with light filtering lens and lighting system |
| CN107726060A (en) * | 2017-11-06 | 2018-02-23 | 中国科学院重庆绿色智能技术研究院 | A kind of array light source lighting device for exposure machine |
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| CN202203858U (en) * | 2011-09-09 | 2012-04-25 | 中国科学院宁波材料技术与工程研究所湖州新能源产业创新中心 | Lens for LED lamp |
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Patent Citations (5)
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| US5300263A (en) * | 1992-10-28 | 1994-04-05 | Minnesota Mining And Manufacturing Company | Method of making a microlens array and mold |
| CN201137875Y (en) * | 2008-01-16 | 2008-10-22 | 利卫精密股份有限公司 | Light guiding column |
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