CN203453989U - Secondary optical lens used in LED lamp - Google Patents
Secondary optical lens used in LED lamp Download PDFInfo
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- CN203453989U CN203453989U CN201320428127.4U CN201320428127U CN203453989U CN 203453989 U CN203453989 U CN 203453989U CN 201320428127 U CN201320428127 U CN 201320428127U CN 203453989 U CN203453989 U CN 203453989U
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- total reflection
- sensitive surface
- reflection cambered
- optical lens
- sensitive
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Abstract
The utility model relates to a secondary optical lens used in an LED lamp. The secondary optical lens used for the LED lamp comprises a lens base body, a total light emitting surface, a primary light receiving surface total-reflection cambered surface, a primary light receiving surface lower surface, a primary light emitting surface and a circumference surface are arranged on the lens base body, a secondary light receiving surface total-reflection cambered surface, a secondary light receiving surface lower surface and a secondary light emitting surface are arranged inside the primary light receiving surface total-reflection cambered surface, the primary light receiving surface lower surface and the primary light emitting surface, a secondary light receiving surface light transmitting surface cambered surface is arranged inside the secondary light receiving surface total-reflection cambered surface, the secondary light receiving surface lower surface and the secondary light emitting surface, the total light emitting surface, the primary light receiving surface lower surface, the secondary light receiving surface lower surface, the primary light emitting surface and the secondary light emitting surface are mutually parallel, and the primary light receiving surface total-reflection cambered surface and the secondary light receiving surface total-reflection cambered surface are curved surfaces. The secondary optical lens has the advantages of being good in space chromaticity coincidence, simple in structure, easy to process and low in cost.
Description
technical field
the utility model relates to a kind of secondary optical lens for LED light fixture, particularly a kind of for improving the conforming combined type TIR secondary optical lens of LED light fixture space colourity, for the light that LED light source is sent, carries out twice redistribution in space.
background technology
in recent years, fast development along with semiconductor technology, the luminous efficiency of power-type LED has obtained significant raising, and consumer requires also by pursuing high brightness, to turn in light quality gradually to lighting, and space colourity uniformity is an important indicator of LED light fixture.The light efficiency of most of LED light fixtures in the market still can reach relevant criterion requirement, but space colourity uniformity does not but far reach standard-required.Domestic also do not have the relevant research of LED light fixture space colourity uniformity at present, and U.S. Energy Star V1.0 explicitly calls for space colourity uniformity u ', v ' <0.004 to exporting to its domestic LED bulb lamp.This system is intended to by additionally not increasing components and parts, only by changing the method for existing TIR lens arrangement, improves the space colourity uniformity of light fixture.
the transmission-type lens that adopt at present, will be very even through the curved surface hot spot of aspheric surface art designs, but because the limitation of lens diameter, the light of lens side is not fully utilized (light leak), is generally applied in wide-angle light fixture.
but in prior art, still space colourity uniformity is not made the lens arrangement of good improvement, existed the light color of process secondary optics element outgoing in the inhomogeneous phenomenon of spatial distribution.
utility model content
technical problem to be solved in the utility model is to provide a kind of reasonable in design, space colourity high conformity, easy processing simple in structure, the secondary optical lens for LED light fixture that cost is low.
it is that this is for the secondary optical lens of LED light fixture that the utility model solves the problems of the technologies described above adopted technical scheme, comprise lens matrix, on described lens matrix, be provided with total exiting surface, a sensitive surface total reflection cambered surface, a sensitive surface lower surface, exiting surface and periphery, its design feature is: a described sensitive surface total reflection cambered surface, the inside of a sensitive surface lower surface and an exiting surface is provided with secondary sensitive surface total reflection cambered surface, secondary sensitive surface lower surface and secondary exiting surface, described secondary sensitive surface total reflection cambered surface, the inside of secondary sensitive surface lower surface and secondary exiting surface is provided with secondary sensitive surface light transmitting surface cambered surface, described total exiting surface, a sensitive surface lower surface, secondary sensitive surface lower surface, an exiting surface, secondary exiting surface is parallel to each other, a described sensitive surface total reflection cambered surface and secondary sensitive surface total reflection cambered surface are curved surface.
this secondary optical lens has increased one deck secondary optics face on traditional TIR lens basis, for a kind of combined type TIR lens, sensitive surface is designed to the structure that three layers of convex-shaped arc surface and plane combine, when the light that light source sends is radiated on the prime sensitive surface of secondary optical lens, light has carried out first distribution through total reflection and transmission, through rear class sensitive surface, light is distributed again again, after twice compound distribution, the light sending from light source is distributed in space again, not only improved the utilization rate of light, the most important thing is greatly to have improved light spot illumination uniformity and space colourity uniformity.
as preferably, the radius of curvature of secondary sensitive surface total reflection cambered surface described in the utility model is greater than the radius of curvature of a sensitive surface total reflection cambered surface.Further realize light in the distribution again in space, guarantee space colourity and the illumination uniformity of secondary optical lens.
as preferably, a sensitive surface total reflection cambered surface described in the utility model and secondary sensitive surface total reflection cambered surface are the parabolical one section of convex-shaped arc surface forming through rotation of convex or the convex-shaped arc surface that obtains through the convex line rotation of other shapes.
such setting, can further make light be fully used, and can further make space colourity even.
as preferably, a sensitive surface total reflection cambered surface described in the utility model and secondary sensitive surface total reflection cambered surface are quadratic surface.
quadratic surface is more prone to processing, and production process is simple, is easy to industrial automation and produces.
as preferably, in transparent base described in the utility model, also comprise that one perpendicular to exiting surface and the periphery of the convex-shaped arc surface bottom extremity of a sensitive surface total reflection cambered surface.
as preferably, in transparent base described in the utility model, also comprise perpendicular to secondary exiting surface and the secondary circle side face of the convex-shaped arc surface bottom extremity of secondary sensitive surface total reflection cambered surface.
the setting of periphery and secondary circle side face, can effectively control the ratio of transmitted ray and reflection ray, improves space colourity uniformity and illuminance uniformity.
as preferably, total exiting surface described in the utility model is outside equipped with frosting.
frosting part has less converging action to light, can obtain hot spot more uniformly, and after frosting, hot spot can be radiated on receiving plane more equably.
as preferably, total exiting surface described in the utility model is outside equipped with lenticule surface.
lenticule surface part has less converging action equally to light, can obtain hot spot more uniformly, and after lenticule face, hot spot can be radiated on receiving plane more equably.
as preferably, the refractive index of lens matrix material described in the utility model is less than 2.0.
as preferably, the material of lens matrix described in the utility model is PC(Merlon), PMMA(polymethyl methacrylate), glass or the good material of its light transmission.
in order to reduce costs, LED secondary optical lens adopts PC or PMMA material conventionally, can adopt simple Shooting Technique to realize, simultaneously can go out according to consumer's obstructed Demand Design the lens of various shapes, cost is lower, compared with glass, be difficult for that crisp, high-precision aspheric surface design easily realizes, production efficiency is higher.
the utility model compared with the existing technology has the following advantages and effect: 1, secondary optical lens of the present utility model has increased one deck secondary optics face on traditional TIR lens basis, for a kind of combined type TIR lens, sensitive surface is designed to the structure that three layers of convex-shaped arc surface and plane combine, when the light that light source sends is radiated on the prime sensitive surface of secondary optical lens, light has carried out first distribution through total reflection and transmission, through rear class sensitive surface, light is distributed again again, after twice compound distribution, the light sending from light source is distributed in space again, not only improved the utilization rate of light, the most important thing is greatly to have improved light spot illumination uniformity and space colourity uniformity.2, the radius of curvature of the utility model secondary sensitive surface total reflection cambered surface is greater than the radius of curvature of a sensitive surface total reflection cambered surface, therefore further realizes light in the distribution again in space, guarantees space colourity and the illumination uniformity of secondary optical lens.3, a sensitive surface total reflection cambered surface of the present utility model and secondary sensitive surface total reflection cambered surface be convex parabolical one section through the convex-shaped arc surface that forms of rotation or the convex-shaped arc surface that obtains through the convex line rotation of other shapes.Such setting, can further make light be fully used, and can further make space colourity even.4, a sensitive surface total reflection cambered surface of the present utility model and secondary sensitive surface total reflection cambered surface are quadratic surface, are more prone to processing, and production process is simple, are easy to industrial automation and produce.5, the setting of periphery and secondary circle side face, can effectively control the ratio of transmitted ray and reflection ray, improves space colourity uniformity and illuminance uniformity.6, total exiting surface of the present utility model can be designed to the hot spot that plane, frosting, lenticule surface, pearl face, flank, stripe surface, protruding or concave surface etc. obtain different-effect as required.While being designed to frosting or lenticule surface, can obtain hot spot more uniformly.7, the utility model is designed to by sensitive surface the structure that three layers of convex-shaped arc surface and plane combine, when the light that light source sends is radiated on the prime sensitive surface of secondary optical lens, light has carried out first distribution through total reflection and transmission, through rear class sensitive surface, light is distributed again again, after twice compound distribution, make light in space, reach equally distributed object.Frosted or lenticule exiting surface part have less converging action to light, can obtain hot spot comparatively uniformly, and after exiting surface, hot spot can be radiated on receiving plane more equably.
accompanying drawing explanation
in order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
fig. 1 is structural representation of the present utility model.
fig. 2 is schematic top plan view of the present utility model.
fig. 3 is elevational schematic view of the present utility model.
fig. 4 is for being used the light intensity distributions schematic diagram after conventional TIR secondary optical lens.
fig. 5 is for being used the light intensity distributions schematic diagram after the utility model lens.
fig. 6 is that the utility model lens are applied to the structural representation in LED light fixture.
label declaration: lens matrix 1, total exiting surface 1-1, secondary sensitive surface lower surface 1-2, sensitive surface total reflection cambered surface 1-3, sensitive surface lower surface 1-4, a secondary sensitive surface total reflection cambered surface 1-5, secondary sensitive surface light transmitting surface cambered surface 1-6, secondary circle side face 1-7, exiting surface 1-8, a secondary exiting surface 1-9, secondary exiting surface plane 1-10, periphery 1-11, lenticule face 1-12.
the specific embodiment
below in conjunction with embodiment, the utility model is described in further detail, following examples are to explanation of the present utility model and the utility model is not limited to following examples.
embodiment 1: as shown in Figure 1, 2, 3, the main body of the secondary optical lens for LED light fixture of the present embodiment is lens matrix 1, the below of lens matrix 1 is a sensitive surface lower surface 1-4 who be arranged in parallel, sensitive surface lower surface 1-4, a sensitive surface total reflection cambered surface 1-3, exiting surface 1-8, a total exiting surface 1-1 connect successively, form outer surface.One time exiting surface 1-8 is parallel with a sensitive surface lower surface 1-4.Above a sensitive surface lower surface 1-4, the inside of lens matrix 1, be provided with the secondary sensitive surface lower surface 1-2, secondary sensitive surface total reflection cambered surface 1-5, the secondary exiting surface 1-9 that connect successively, form secondary lens face, wherein secondary sensitive surface lower surface 1-2 and secondary exiting surface 1-9 be arranged in parallel.Inner at secondary lens face, be provided with secondary sensitive surface light transmitting surface cambered surface 1-6, the bottom edge of secondary sensitive surface light transmitting surface cambered surface 1-6 is connected by vertically disposed secondary circle side face 1-7 with secondary sensitive surface lower surface 1-2.The edge of a sensitive surface lower surface 1-4 is connected by vertically disposed periphery 1-11 with the edge of secondary exiting surface 1-9.Between secondary sensitive surface light transmitting surface cambered surface 1-6 and secondary exiting surface 1-9, be provided with the secondary exiting surface plane 1-10 be arrangeding in parallel being connected with secondary sensitive surface light transmitting surface cambered surface 1-6 with secondary circle side face 1-7.On total exiting surface 1-1, be provided with lenticule face 1-12.
sensitive surface total reflection cambered surface 1-3 and secondary sensitive surface total reflection cambered surface 1-5 are quadratic surface, and the radius of curvature of a sensitive surface total reflection cambered surface 1-3 is less than secondary sensitive surface total reflection cambered surface 1-5.
in the present embodiment, the refractive index of lens matrix 1 material is less than 2.0.
sensitive surface total reflection cambered surface 1-3 of the present embodiment and secondary sensitive surface total reflection cambered surface 1-5 can be the parabolical one section of convex-shaped arc surface forming through rotation of convex or the convex-shaped arc surface obtaining through the convex line rotation of other shapes.
secondary optical lens for LED light fixture of the present utility model can with the PC of the high grade of transparency, ultraviolet light radiation or PMMA is plastic injection-moulded forms.
as shown in Figure 6, LED light source is fixed on aluminium base, with optical cement, the secondary optical lens for LED light fixture of the present utility model is fixed on above aluminium base.As can be seen from the figure the light that light source sends has carried out distributing in space through the secondary optical lens for LED light fixture of the present utility model again.
the secondary optical lens for LED light fixture that the utility model provides is the only lambert type that hypothesis is injected from primary optical lens, and light intensity is radially successively decreased from center, and common this hypothesis is set up.Therefore the utility model adopts the material of low-refraction to make lens, with a sensitive surface total reflection cambered surface 1-3, secondary sensitive surface total reflection cambered surface 1-5, secondary sensitive surface light transmitting surface cambered surface 1-6, the structure that periphery 1-11 combines is as sensitive surface, total exiting surface 1-1 is matte surface or lenticule surface, the above part of the light-emitting area of LED light source is completely inner in lens like this, can effectively improve the utilization rate of light, while twice incident cambered surface and total reflection cambered surface can make light realize more uniformly and distributing in space, frosted or the lenticule surface treatment of total exiting surface 1-1 have also effectively improved the spatial distribution of light, when improving illuminance uniformity, also improved the space colourity uniformity of LED light fixture.
as shown in Figure 4,5, the ray-collecting that the secondary optical lens for LED light fixture that uses the utility model to provide can send LED light source gets up and distributes uniformly in space again.Compared to existing technology, there is significant progress.
the design of the secondary optical lens for LED light fixture of the present utility model is in dead ahead, to use penetration optically focused, and quadratic surface can all be collected sidelight and reflect (total reflection) and goes out, overlapping (angle is identical) by these two kinds of light just can obtain the most perfect light utilization and beautiful hot spot effect, owing to adopting the mode of total reflection and transmission combination, light utilization will be far above transmission-type lens, also can make on secondary lens surface a little changes, can be designed to plane, frosting, lenticule surface, pearl face, flank, stripe surface, protruding or concave surface etc. obtains the hot spot of different-effect.
in addition, it should be noted that, the specific embodiment described in this description, the shape of its parts and components, institute's title of being named etc. can be different.All equivalence or simple change of doing according to described structure, feature and the principle of the utility model patent design, are included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection domain of the present utility model.
Claims (8)
1. the secondary optical lens for LED light fixture, comprise lens matrix, on described lens matrix, be provided with total exiting surface, a sensitive surface total reflection cambered surface, a sensitive surface lower surface, exiting surface and periphery, it is characterized in that: a described sensitive surface total reflection cambered surface, the inside of a sensitive surface lower surface and an exiting surface is provided with secondary sensitive surface total reflection cambered surface, secondary sensitive surface lower surface and secondary exiting surface, described secondary sensitive surface total reflection cambered surface, the inside of secondary sensitive surface lower surface and secondary exiting surface is provided with secondary sensitive surface light transmitting surface cambered surface, described total exiting surface, a sensitive surface lower surface, secondary sensitive surface lower surface, an exiting surface, secondary exiting surface is parallel to each other, a described sensitive surface total reflection cambered surface and secondary sensitive surface total reflection cambered surface are curved surface.
2. the secondary optical lens for LED light fixture according to claim 1, is characterized in that: the radius of curvature of described secondary sensitive surface total reflection cambered surface is greater than the radius of curvature of a sensitive surface total reflection cambered surface.
3. the secondary optical lens for LED light fixture according to claim 1 and 2, is characterized in that: a described sensitive surface total reflection cambered surface and secondary sensitive surface total reflection cambered surface are the parabolical one section of convex-shaped arc surface forming through rotation of convex or the convex-shaped arc surface that obtains through the convex line rotation of other shapes.
4. the secondary optical lens for LED light fixture according to claim 3, is characterized in that: a described sensitive surface total reflection cambered surface and secondary sensitive surface total reflection cambered surface are quadratic surface.
5. the secondary optical lens for LED light fixture according to claim 1, is characterized in that: in described transparent base, also comprise that one perpendicular to exiting surface and the periphery of the convex-shaped arc surface bottom extremity of a sensitive surface total reflection cambered surface.
6. the secondary optical lens for LED light fixture according to claim 1, is characterized in that: in described transparent base, also comprise perpendicular to secondary exiting surface and the secondary circle side face of the convex-shaped arc surface bottom extremity of secondary sensitive surface total reflection cambered surface.
7. the secondary optical lens for LED light fixture according to claim 1, is characterized in that: described total exiting surface is outside equipped with frosting.
8. the secondary optical lens for LED light fixture according to claim 1, is characterized in that: described total exiting surface is outside equipped with lenticule surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320428127.4U CN203453989U (en) | 2013-07-18 | 2013-07-18 | Secondary optical lens used in LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320428127.4U CN203453989U (en) | 2013-07-18 | 2013-07-18 | Secondary optical lens used in LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453989U true CN203453989U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320428127.4U Expired - Fee Related CN203453989U (en) | 2013-07-18 | 2013-07-18 | Secondary optical lens used in LED lamp |
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| Country | Link |
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| CN (1) | CN203453989U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438399A (en) * | 2013-07-18 | 2013-12-11 | 浙江中博光电科技有限公司 | Secondary optical lens for LED (light emitting diode) lamp |
-
2013
- 2013-07-18 CN CN201320428127.4U patent/CN203453989U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438399A (en) * | 2013-07-18 | 2013-12-11 | 浙江中博光电科技有限公司 | Secondary optical lens for LED (light emitting diode) lamp |
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Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20210718 |