CN202203857U - Optical lens for LED lamp - Google Patents
Optical lens for LED lamp Download PDFInfo
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- CN202203857U CN202203857U CN2011203392285U CN201120339228U CN202203857U CN 202203857 U CN202203857 U CN 202203857U CN 2011203392285 U CN2011203392285 U CN 2011203392285U CN 201120339228 U CN201120339228 U CN 201120339228U CN 202203857 U CN202203857 U CN 202203857U
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- lens
- thin plate
- led light
- collimation lens
- light
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Abstract
The utility model discloses an optical lens for an LED lamp, which comprises a collimating lens, wherein the side face of the collimating lens is a total reflection face; a thin plate lens is arranged on the light extraction side of the collimating lens, and is formed by concave surfaces of a plurality of rectangular concave surface micro lenses; and a refraction groove is formed at one end surface of the collimating lens opposite to the light extraction face of the collimating lens. According to the utility model, the collimating lens is combined with the thin plate lens, so that light rays penetrating the optical lens of the LED lamp are soft, do not glare, and are uniformly distributed; in addition, the irradiation range of a light source is enlarged.
Description
Technical field
The utility model relates to LED lighting apparatus field, and particularly a kind of LED light is learned lens.
Background technology
Light emitting diode (Light-Emitting-Diode is called for short LED) is a kind of semiconductor that can electric energy be converted into luminous energy, and its core component is a led chip.
Along with the high speed development of information technology, lighting field is more and more paid attention to for environmental protection and energy saving, green illumination---and high-power LED illumination begins to represent its star's elegance in the world.The high-power LED illumination technology has remarkable advantages such as environmental protection, energy-conservation, life-span be long, thereby will bring a historical huge revolution for traditional lighting engineering.
LED is as following lighting field star in the world; Though himself irreplaceable advantage is arranged, aspect the lighting field practical application, replaces traditional bulb lamp, fluorescent lamp etc. and still have its limitation and the technical issues that need to address; Such as because so little its light-emitting area of the volume of led chip is little; And its luminous directionality also makes the irradiated area of led light source limited, and then causes the centrality of light source, makes the people produce dazzling, dizzy sensation.
In order to solve the technical problem that makes the people produce dazzling, dizzy sensation, LED needs secondary light-distribution lens that led light source is adjusted.Existing secondary light-distribution lens all adopts silica gel or Merlon (PC), polymethacrylates optical plastic material such as (PMMA); Through nonimaging optics design lens-shape; Utilize optical effects such as refraction, reflection to change LED light and penetrate direction; Light source to LED sends is redistributed, thus the Illumination Distribution that obtains expecting.Common secondary light-distribution lens design demand is considered the characteristics of luminescence of chip itself; To different led chips or different LED encapsulation, owing to the chip light emitting characteristic there are differences, behind the replacing chip; Just need design again to satisfy same illumination distribution requirements secondary optical lens; The versatility that is secondary optical lens has stronger limitation, causes in actual production process, need design different lens to different chips; This has just increased high lens die sinking cost, is unfavorable for generally applying.
Publication number is that the one Chinese patent application of CN 101943368A discloses a kind of LED collector lens; Said 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, and the lens lateral wall is a fully reflecting surface, and 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 in the prior art, the LED light-emitting area is little, the light source centrality is crossed and forced the people to feel that dazzling, dizzy technical problem still exists.
The patent No. is that the Chinese patent of ZL 201020208206.0 discloses a kind of LED car headlamp lens; Comprise: optical lens, led light source; Said led light source is arranged on the rear portion of lens, and led light source is one or plurality of LEDs, and optical lens is made up of front curve, rear curved surface, three faces in side; The front curve of optical lens combines by the concave lens array or with cylinder, sphere, and the side of optical lens is provided with draw-in groove or the bayonet socket that installs and fixes usefulness.This disclosed technical scheme utilize nonimaging optics principle design the optical lens of dipped headlights, high beam and fog lamp; Have that volume is little, optical efficiency is high and the characteristics of excellent in optical properties; But it is used for the automotive lighting field; Excellent in optical properties mainly still is embodied in and has improved illumination brightness and increased the illumination visual range, can not solve still that the LED light-emitting area is little, the light source centrality is crossed and forced the people to feel dazzling, dizzy technical problem.
Therefore, the irradiating angle that in use in the actual illumination field, how to change led light source increases irradiated area simultaneously, and makes all even compatibility that becomes soft and how to improve secondary light-distribution lens of distribution of light become the focus that merits attention on the LED road for development.
Summary of the invention
The utility model provides a kind of LED light to learn lens; Combination through collimation lens and thin plate lens; Make LED light learn lens and be applicable to different led chips, versatility is wide, and produced simultaneously distribution of light evenly, light becomes soft and light source irradiation is wide.
A kind of LED light is learned lens; Comprise collimation lens; The side of described collimation lens is a fully reflecting surface; The exiting surface of described collimation lens is provided with the thin plate lens, the exiting surface of described thin plate lens is made up of the lenticular concave surface of several rectangle concave surfaces, and the lenticular concave surface of described rectangle concave surface is 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.
Said 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 refracted slot, penetrates through the thin plate lens then.
In order to obtain better effect, below preferred as the utility model:
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; Help reducing light through the loss in the collimation lens process, increased the light emission rate of the utility model LED light lens.
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 entering thin plate of parallel rays lens.
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 protruding convex surface of exiting surface 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 closely arranged the planar array that forms by the lenticular concave surface of rectangle concave surface of several same size and is formed.Rectangle concave surface lenticule can make the light branch through the thin plate lens scatter the rectangular light spot that formation is different from circular light spot in the prior art; Simultaneously; Several onesize rectangle concave surface lenticules are tight arrangement and form planar array; The effect of arranging like this is to have carried out the overlapping of certain area to the rectangle irradiation area that forms through each rectangle concave surface lenticule refraction originally, so neither influences the brightness of lamp, reaches all even soft not dazzling effect of irradiate light simultaneously.
Described thin plate lens can be corresponding one by one with collimation lens; I.e. corresponding collimation lens of thin plate lens; Be combined into independently LED light and learn lens, a plurality of independently LED light are learned the lens solid matter of rationally cutting edge again and are formed array, are combined into LED light and learn 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 light and learns lens.The LED light of above-mentioned various combination is learned lens arrangement 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 optical lens structure not only can satisfy the vast market demand, and can directly replace the optical 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 assembling more easily, production cost are lower, and illuminating area is bigger, light is softer.
Described thin plate lens are circular or polygon etc.; The thin plate lens can be made corresponding modification (as cutting edge or integration) according to demands of different; 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 light 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.
Described 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 described 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 utlity model has following advantage:
The utility model refracted slot 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 the utility model collimation lens is a fully reflecting surface, helps reducing light through the loss in the collimation lens process, has increased the light emission rate of the utility model LED light lens.
The utility model LED light is learned lens and has been overcome the general limitation defective of secondary light-distribution lens in the prior art; Promptly to different LED chip or different rising angle; The utility model LED light is learned the light distribution requirements that lens can realize satisfying specific Illumination Distribution; Make the utility model LED light learn lens and can be applicable to different led chips, improved its versatility greatly.
The utility model LED light is learned lens can realize that integrated lens also can carry out the separating purification design and promptly separate with collimation lens through the thin plate lens; Both can realize compatibility, also can realize different illumination distribution design through changing the few thin plate lens of consumptive material for different chips; Simultaneously; Each rectangle concave surface lenticule all has the radiation response that makes incident ray disperse away formation facula area equal and opposite in direction, be evenly distributed on the thin plate lens with its unique concave structure; 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 that the utility model LED light is learned lens;
Fig. 2 be the LED light among Fig. 1 learn lens A to view;
Fig. 3 is the structural representation that the utility model LED light is learned the thin plate lens in the lens;
Fig. 4 closely arranges the structural representation of the LED light lens of formation for a plurality of collimation lenses of the utility model;
Fig. 5 be the LED light among Fig. 4 learn lens B to view;
Fig. 6 is that the structural representation that the LED light that forms is learned lens is arranged in a plurality of collimation lens splits of the utility model;
Fig. 7 closely arranges the structural representation that the LED light that forms is learned lens after a plurality of independently LED of the utility model light is learned the lens combination;
Fig. 8 is the light path sketch map that the utility model LED light is learned lens;
Fig. 9 learns the hot spot design sketch that forms behind the lens for light through the utility model LED light;
Wherein, in Fig. 1～8,1 is the thin plate lens, and 2 is rectangle concave surface lenticule, and 3 is the incidence surface of thin plate lens; 4 is collimation lens, and 5 is refracted slot, and 6 is the bottom land of refracted slot, and 7 is the side of collimation lens, and 8 is connecting portion; 9 is led chip, and 10 is the hook pin, and 11 is first light path, and 12 is second light path.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Like Fig. 1, Fig. 2, shown in Figure 3, learn lens for the utility model LED light, 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; The exiting surface of collimation lens 4 is provided with thin plate lens 1; The exiting surface of thin plate lens 1 closely arranges the planar array that forms by the concave surface of the rectangle concave surface lenticule 2 of several same size and forms, and the concave surface of rectangle concave surface lenticule 2 is exiting surfaces of collimation lens 4 dorsad; Collimation lens 4 is provided with refracted slot 5 at an end face relative with the exiting surface of collimation lens 4; The area of the exiting surface of collimation lens 4 is greater than the area of an end face relative with the exiting surface of collimation lens 4.This LED light is learned lens and can be adopted integrated mode to obtain; Also can obtain by collimation lens 4 and thin plate lens 1 split combination; The incidence surface 3 of the exiting surface of collimation lens 4 and thin plate lens 1 all is a smooth flat; Can connect through connecting portion 8 and be combined into one, connecting portion 8 places can select to put or not tapping body adhesion substance, make the incidence surface 3 of thin plate lens 1 fit tightly the exiting surface of collimation lens 4.
Refracted slot 5 is cylindric.The bottom land 6 of refracted slot 5 is the protruding convex surface of exiting surface of collimation lens 4 dorsad.The side 7 of collimation lens 4 is a smooth surface.Though non-smooth surface can be selected in the side 7 of collimation lens 4; Refracted slot 5 also can be ellipticity; The bottom land 6 of refracted slot 5 can be the plane, but the LED light of these selections is learned the ideal that the effect of lens all is not so good as side 7, cylindric refracted slot 5 and the convex surface bottom land 6 of smooth surface.The exiting surface of thin plate lens 1 is closely to arrange the planar array that forms by the rectangle concave surface lenticule 2 of several same size to form.
Like Fig. 4, Fig. 5, shown in Figure 6, thin plate lens 1 are one, and collimation lens 4 is a plurality of.Promptly can thin plate lens 1 corresponding a plurality of collimation lenses 4, collimation lens 4 can split be arranged also can rationally cut edge and is closely arranged or combine, and forms LED light and learns lens.The shape of thin plate lens 1 can be cut edge according to demand, and thin plate lens 1 can be selected circular or polygon etc.As shown in Figure 5,5 collimation lenses 4 closely are arranged in together through reasonable side cut, form LED light and learn lens, and as shown in Figure 6,4 collimation lens 4 splits are arranged in together, form LED light and learn lens.As shown in Figure 7, thin plate lens also can be combined into independently LED light lens by a corresponding collimation lens, and a plurality of independently LED light lens make up with reasonable side cut solid matter again and form array, are combined into LED light lens.Above-mentioned different optical lens combination structure of giving an example is in order to satisfy the lighting demand of different capacity.
Like Fig. 4, shown in Figure 5, the lateral surface that LED light is learned lens is provided with and is used for and a hook pin 10 or a circle outer that lamp housing is fixing, conveniently fixes with lamp housing.As shown in Figure 6, 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.
The above is merely the preferred embodiment of the utility model, not in order to restriction the utility model, any modification of being made within all spirit at the utility model and the principle, is equal to and replaces and improvement etc., all should be included in the protection domain of the utility model.
The concrete light path that the LED light of the utility model is learned lens is following:
As shown in Figure 8; Led chip 9 is inserted refracted slot 5; The light part that led chip 9 sends 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 the exiting surface of thin plate lens 1, shown in first light path 11; 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; And then penetrate from the exiting surface of thin plate lens 1, shown in second light path 12.First light path 11 and second light path 12 scatter through dividing in the thin plate lens of being made up of several rectangle concave surface lenticules 21; The rectangular light spot that form the area equal and opposite in direction, is evenly distributed; The hot spot effect is as shown in Figure 9, and the light that penetrates from thin plate lens 1 finally reaches the effect that range of exposures is wide, light is soft and light is evenly distributed.
As shown in Figure 9; Can see being different from circular light spot of the prior art, in the utility model is rectangular light spot, under the effect of thin plate lens 1; Scattered formation rectangle irradiation area to the light source of concentrating originally in 2 minutes through each rectangle concave surface lenticule; Several rectangle irradiation areas have carried out the overlapping of certain area, so neither influence the brightness of lamp, reach all even soft not dazzling effect of irradiate light simultaneously; Curve map can be known from Fig. 9, and the rectangular light spot light of learning lens formation through the utility model LED light is even, and being applicable to has in the outdoor lightings such as street lamp of requirement the illumination uniformity.
Claims (10)
1. a LED light is learned lens, comprises collimation lens (4), it is characterized in that the side (7) of described collimation lens (4) is a fully reflecting surface; The exiting surface 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 concave surface of several rectangle concave surface lenticules (2); Described collimation lens (4) is provided with refracted slot (5) at an end face relative with the exiting surface of collimation lens (4).
2. LED light according to claim 1 is learned lens; 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 of described collimation lens (4) is greater than the area of an end face relative with the exiting surface of collimation lens (4).
3. LED light according to claim 1 is learned lens, it is characterized in that the side (7) of described collimation lens (4) is a smooth surface.
4. LED light according to claim 1 is learned lens, it is characterized in that the exiting surface of described collimation lens (4) is a smooth flat;
The incidence surface of described thin plate lens (1) is a smooth flat.
5. learn lens according to claim 1 or 4 described LED light, it is characterized in that the incidence surface of the exiting surface of described collimation lens (4) and described thin plate lens (1) fits tightly;
Perhaps, the exiting surface of described collimation lens (4) is as the incidence surface of described thin plate lens (1).
6. LED light according to claim 1 is learned lens, it is characterized in that described refracted slot (5) is cylindric.
7. learn lens according to claim 1 or 6 described LED light, it is characterized in that, the bottom land (6) of described refracted slot (5) is the protruding convex surface of exiting surface of described dorsad collimation lens (4).
8. LED light according to claim 1 is learned lens, it is characterized in that the exiting surface of described thin plate lens (1) is closely arranged the planar array that forms by the concave surface of the rectangle concave surface lenticule (2) of several same size and formed.
9. LED light according to claim 1 is learned lens, it is characterized in that described thin plate lens (1) are one, and described collimation lens (4) is a plurality of.
10. LED light according to claim 1 is learned lens, it is characterized in that, described thin plate lens (1) are circular or polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203392285U CN202203857U (en) | 2011-09-09 | 2011-09-09 | Optical lens for LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203392285U CN202203857U (en) | 2011-09-09 | 2011-09-09 | Optical lens for LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203857U true CN202203857U (en) | 2012-04-25 |
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ID=45967978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203392285U Expired - Fee Related CN202203857U (en) | 2011-09-09 | 2011-09-09 | Optical lens for LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203857U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313244A (en) * | 2011-09-09 | 2012-01-11 | 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 | Light emitting diode (LED) lamp optical lens |
| CN104316984A (en) * | 2014-10-16 | 2015-01-28 | 广州毅昌科技股份有限公司 | Asymmetric lens |
| CN104456206A (en) * | 2014-12-01 | 2015-03-25 | 杭州照相机械研究所 | Lens and dimming system provided with lens |
-
2011
- 2011-09-09 CN CN2011203392285U patent/CN202203857U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313244A (en) * | 2011-09-09 | 2012-01-11 | 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 | Light emitting diode (LED) lamp optical lens |
| CN104316984A (en) * | 2014-10-16 | 2015-01-28 | 广州毅昌科技股份有限公司 | Asymmetric lens |
| CN104456206A (en) * | 2014-12-01 | 2015-03-25 | 杭州照相机械研究所 | Lens and dimming system provided with lens |
| CN104456206B (en) * | 2014-12-01 | 2016-08-17 | 杭州照相机械研究所 | Lens and there is the light adjusting system of these lens |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20200909 |
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| CF01 | Termination of patent right due to non-payment of annual fee |