CN204153700U - Great power LED collector lens and LED collector lens group - Google Patents
Great power LED collector lens and LED collector lens group Download PDFInfo
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- CN204153700U CN204153700U CN201420602759.2U CN201420602759U CN204153700U CN 204153700 U CN204153700 U CN 204153700U CN 201420602759 U CN201420602759 U CN 201420602759U CN 204153700 U CN204153700 U CN 204153700U
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- collector lens
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Abstract
The utility model provides a kind of great power LED collector lens and LED collector lens group.This LED collector lens comprises: lens body, and it has relative end face and bottom surface; First recessed structure, formed by recessed to the inside in the middle part of the bottom surface of lens body, it has a lower arcuate surface; And second is recessed into structure, formed by recessed to the inside in the middle part of the end face of lens body, it has a lower arcuate surface; Wherein, the first lens body part be recessed between the lower arcuate surface of structure and the lower arcuate surface of the second recessed structure forms a biconvex lens.The utility model combines lens and reflector advantage separately, and low-angle light beam is collimated by the biconvex lens structure of lens centre, achieves low-angle luminous intensity distribution.
Description
Technical field
The utility model relates to technical field of semiconductor illumination, particularly relates to a kind of great power LED collector lens and LED collector lens group.
Background technology
Along with the development of high-power integrated LED chip encapsulation technology and heat dissipation technology, high-power, integrated light source is becoming a kind of trend of LED chip and light source development.In high-power LED lamp design, usually adopt quadratic surface reflector, lens and reflector and lens combining form as secondary light-distribution device, to realize the design object of expecting.
But, in low-angle high-power LED projector lamp design, reflector cannot collect the low-angle light beam that LED light source sends, and can only be reduced the light emitting anger of light fixture by the height increasing reflector, is therefore difficult to realize low-angle luminous intensity distribution in the size range limited.In addition, when telecurie irradiation, in reflector, the light of direct outgoing can not focus in range of exposures, causes very most optical energy loss, brings harmful light pollution simultaneously to environment.According to lens luminous intensity distribution, then single lens is difficult to realize low-angle luminous intensity distribution, adopts set of lenses then can increase the difficulty of the assembling of light fixture, and the increase of lens numbers can large lossy luminous energy, reduces Luminaire efficiency.According to the combining form of reflector and lens, then device location and install comparatively complicated, and Luminaire efficiency is low.
Utility model content
(1) technical problem that will solve
In view of above-mentioned technical problem, the utility model provides a kind of LED collector lens and LED collector lens group, to realize low-angle luminous intensity distribution in the size range limited, thus reduces light fixture size, improves optical energy utilization efficiency.
(2) technical scheme
According to an aspect of the present utility model, provide a kind of LED collector lens.This LED collector lens comprises: lens body, and it has relative end face and bottom surface; First recessed structure, formed by recessed to the inside in the middle part of the bottom surface of lens body, it has a lower arcuate surface; And second is recessed into structure, formed by recessed to the inside in the middle part of the end face of lens body, it has a lower arcuate surface; Wherein, the first lens body part be recessed between the lower arcuate surface of structure and the lower arcuate surface of the second recessed structure forms a biconvex lens.
Preferably, in the utility model LED collector lens, the lower arcuate surface of the first recessed structure is the refraction plane of incidence; The lower arcuate surface of the second recessed structure is refraction exit facet; The light sent by the LED light source being placed in the first recessed structure, outgoing collimates to the part in the refraction plane of incidence via biconvex lens, by the outgoing of refraction exit facet.
Preferably, in the utility model LED collector lens, the side of the first recessed structure and the second recessed structure is the withdrawing pattern conical surface; The light sent by the LED light source being placed in the first recessed structure, outgoing extremely reflects the lateral surface of the part outside the plane of incidence via the withdrawing pattern conical surface entrance lens body of the first recessed structure, in this lateral surface generation total reflection by the end face outgoing of lens body.
Preferably, in the utility model LED collector lens, angle θ is between 10 °-15 ° in incident light boundary; Wherein, the central axis angulation of the straight line that formed for LED light source to the refraction plane of incidence edge being placed in the first recessed structure of incident light boundary angle θ and lens body.
Preferably, in the utility model LED collector lens, LED collector lens is a part for class truncated cone-shaped or class truncated cone-shaped.
Preferably, in the utility model LED collector lens, class truncated cone-shaped is formed around the rotation of its right-angle side by a class right-angled trapezium with curve hypotenuse; A part for class truncated cone-shaped is the shape that class truncated cone-shaped is formed after the one or more plane cutting being parallel to its central axis.
Preferably, in the utility model LED collector lens, the lower arcuate surface of the first recessed structure and the lower arcuate surface of the second recessed structure are spherical bottom.
Preferably, the utility model LED collector lens also comprises: alignment pin, is arranged at the radiator binding face of LED collector lens, for the location of LED collector lens on radiator face; And/or edge protuberance, the edge of lens body bottom surface is set, fixing for lens and light fixture.
According to another aspect of the present utility model, additionally provide a kind of LED collector lens group.This LED collector lens group comprises N number of above-mentioned LED collector lens, wherein, and N >=2.
Preferably, in the utility model LED collector lens group, N number of LED collector lens is centrosymmetric shape, and the 360 °/N in interval between two LED collector lenses that is connected is arranged.
(3) beneficial effect
As can be seen from technique scheme, the utility model LED collector lens and LED collector lens group have following beneficial effect:
(1) combine lens and reflector advantage separately, low-angle light beam is collimated by the biconvex lens structure of lens centre, achieves low-angle luminous intensity distribution;
(2) wide-angle light beam is then collimated by the fully reflecting surface of side, and in conjunction with above-mentioned low-angle luminous intensity distribution, powerful integrated LED light source effectively can be collimated, obtain the light beam that lighting angle is less than 10 °, lens efficiency is high;
(3) because most of light beam is reflected by fully reflecting surface to export, therefore with by the scheme of collimated compare, these lens can effectively weaken the aberration produced by lens reflection;
(4) compare with conventional total reflection lens, the bright dipping groove be made up of the withdrawing pattern conical surface and refraction exit facet in these lens can effectively reduce raw-material use, reduces product weight.
Accompanying drawing explanation
Figure 1A is the structural representation according to the utility model first embodiment LED collector lens;
Figure 1B is the generalized section of the collector lens of great power LED shown in Figure 1A;
Fig. 1 C is the stereogram of the collector lens of great power LED shown in Figure 1A;
Fig. 2 is the front view according to the utility model second embodiment LED collector lens group.
[main element]
1-LED collector lens; 2-reflects the plane of incidence;
The 3-withdrawing pattern conical surface; 4-alignment pin;
5-radiator binding face; 6-fully reflecting surface;
7-edge protuberance; 8-is totally reflected exit facet;
The 9-withdrawing pattern conical surface; 10-reflects exit facet;
11-central axis (optical axis).
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.It should be noted that, in accompanying drawing or description describe, similar or identical part all uses identical figure number.The implementation not illustrating in accompanying drawing or describe is form known to a person of ordinary skill in the art in art.In addition, although herein can providing package containing the demonstration of the parameter of particular value, should be appreciated that, parameter without the need to definitely equaling corresponding value, but can be similar to corresponding value in acceptable error margin or design constraint.The direction term mentioned in embodiment, such as " on ", D score, "front", "rear", "left", "right" etc., be only the direction with reference to accompanying drawing.Therefore, the direction term of use is used to illustrate and is not used for limiting protection domain of the present utility model.
The utility model LED collector lens and LED collector lens group combine lens and reflector advantage separately, low-angle light beam is collimated by the biconvex lens structure of lens centre, wide-angle light beam is then collimated by the fully reflecting surface of side, thus achieves the raising of lens efficiency in the size range limited.
In an exemplary embodiment of the present utility model, provide a kind of LED collector lens.Figure 1A is the structural representation according to the utility model embodiment LED collector lens.Figure 1B is the generalized section of the collector lens of great power LED shown in Figure 1A.Fig. 1 C is the stereogram of the collector lens of great power LED shown in Figure 1A.
Please refer to Figure 1A, Figure 1B and Fig. 1 C, the present embodiment LED collector lens 1 in the axisymmetric class truncated cone-shaped in center, is called lens body on the whole.Such truncated cone-shaped can be thought that a class right-angled trapezium rotates around its right-angle side and form.The difference of such right-angled trapezium and right-angled trapezium is that its hypotenuse is a curve.Thus the lateral wall of such truncated cone-shaped is free form surface.Point on this free form surface can ensure that the light sent from LED light source is through full transmitting and the end face of such truncated cone-shaped of exiting parallel can occur thus.
The bottom surface recessed formation first to the inside that the diameter of the lens body of such truncated cone-shaped is less is recessed into structure, and the side of this first recessed structure is the withdrawing pattern conical surface 3, and its bottom surface protrudes formation sphere laterally, as the refraction plane of incidence 2.The end face recessed formation second to the inside that the diameter of the lens body of such truncated cone-shaped is larger is recessed into structure, and the side of this second recessed structure forms the withdrawing pattern conical surface 9, and its bottom surface protrudes formation sphere laterally, as refraction exit facet 10.Wherein, the spherical bottom (the refraction plane of incidence 2) of the first recessed structure forms a biconvex lens with the spherical bottom (reflecting exit facet 10) of the second recessed structure.
As shown in Figure 1A, the plane of incidence aperture of this biconvex lens and exit facet aperture are determined by the incident light angle θ that demarcates.Wherein, the straight line that θ is formed for LED light source center to the refraction plane of incidence edge being placed in the first recessed structure and lens body central axis 11 angulation, its scope is between 10 °-15 °.It should be noted that, the aperture of the second recessed structure should meet the angle sent by the LED light source being placed in the first recessed structure be less than or equal to incident light demarcate the light of angle θ can via the second recessed structure outgoing.
First recessed structure is as the accommodation space of LED light source.The light beam that this LED light source sends is divided into two parts to collimate by the present embodiment LED collector lens:
(1) in the side of rotating shaft and optical axis, the light beam of incident angle within the scope of 0 ° ~ θ is collimated by the biconvex lens at LED collector lens center, by the outgoing of refraction exit facet 10.
(2) for the lateral surface of the light beam of incident angle within the scope of θ ~ 90 ° via the withdrawing pattern conical surface entrance lens body of the described first recessed structure, collimated by fully reflecting surface 6, reverberation is by being totally reflected exit facet 8 (i.e. the end face of lens body) outgoing.
In addition, for the ease of the installation of lens, the radiator binding face 5 of LED collector lens devises alignment pin 4 (its enlarged drawing is shown in the upper left corner of Figure 1A), for the location of LED collector lens on radiator face.In the exiting surface edge designs edge protuberance 7 of lens, fixing for lens and light fixture.
Software simulation shows, adopt the LED collector lens of the present embodiment, light-emitting area diameter is less than to the LED light source of 46mm, the luminous intensity distribution that lighting angle is less than 10 ° can be realized, and, luminous flux utilization rate during telecurie irradiation (luminous flux that in receiving surface, luminous flux/light fixture is launched) up to 86%, and adopts the reflector of prior art, and luminous flux utilization rate during telecurie irradiation under same size is only 64%.
It should be noted that; when requiring not to be strict especially; the utility model LED collector lens also can be a part for truncated cone-shaped on ordinary meaning or class truncated cone-shaped on the whole; as long as it comprises the first recessed structure and the second recessed structure; and the lens component between the spherical bottom of two recessed structures forms biconvex lens, all within protection domain of the present utility model.
So far, the utility model LED collector lens is introduced complete.
On the basis of above-described embodiment, the utility model additionally provides another LED collector lens group.Fig. 2 is the front view according to the utility model second embodiment LED collector lens group.As shown in Figure 2, this LED collector lens group comprises the LED collector lens shown in three Figure 1A, and adjacent two LED collector lenses spatially partly overlap.
In the present embodiment, in LED collector lens group, each LED collector lens is centrosymmetric shape, and be connected 120 °, interval setting between two LED collector lenses.
It should be noted that, the shape of this LED collector lens group is determined by the arrangement mode of LED, the present embodiment want it is emphasised that, for any one the LED collector lens in LED collector lens group, due to the reason of aspect, space, it is not complete class truncated cone-shaped, its lateral surface can be round table surface, and its partial fusion crossing with other LED collector lenses is integral, no longer in round table surface, namely it can be regarded as the part that class truncated cone-shaped is formed after the one or more plane cutting being parallel to its central axis.
So far, by reference to the accompanying drawings the present embodiment has been described in detail.Describe according to above, those skilled in the art should have the utility model LED collector lens and have clearly been familiar with.
In addition, the above-mentioned definition to each element and method is not limited in various concrete structures, shape or the mode mentioned in embodiment, those of ordinary skill in the art can change simply it or replace, such as: fully reflecting surface 6 is substituted by parabola, straightway; The spherical bottom of the first recessed structure and the second recessed structure can also replace, as conical surface etc. by other forms of lower arcuate surface.
In sum, the utility model combines lens and reflector advantage separately, low-angle light beam is collimated by the biconvex lens structure of lens centre, and wide-angle light beam is then collimated by the fully reflecting surface of side, thus achieves the raising of lens efficiency in the size range limited.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a LED collector lens, is characterized in that, comprising:
Lens body, it has relative end face and bottom surface;
First recessed structure, formed by recessed to the inside in the middle part of the bottom surface of described lens body, it has a lower arcuate surface; And
Second recessed structure, formed by recessed to the inside in the middle part of the end face of described lens body, it has a lower arcuate surface;
Wherein, the described first lens body part be recessed between the lower arcuate surface of structure and the lower arcuate surface of the described second recessed structure forms a biconvex lens.
2. LED collector lens according to claim 1, is characterized in that, the lower arcuate surface of the described first recessed structure is the refraction plane of incidence; The lower arcuate surface of the described second recessed structure is refraction exit facet;
The light sent by the LED light source being placed in the described first recessed structure, the part in outgoing to the described refraction plane of incidence collimates via described biconvex lens, by the outgoing of described refraction exit facet.
3. LED collector lens according to claim 2, is characterized in that, the side of the described first recessed structure and the second recessed structure is the withdrawing pattern conical surface;
The light sent by the LED light source being placed in the described first recessed structure, part outside outgoing to the described refraction plane of incidence is recessed into the lateral surface of the incident described lens body of the withdrawing pattern conical surface of structure via described first, in this lateral surface generation total reflection by the end face outgoing of described lens body.
4. LED collector lens according to claim 3, is characterized in that, angle θ is between 10 °-15 ° in incident light boundary;
Wherein, the central axis angulation of the straight line that formed for LED light source to the refraction plane of incidence edge being placed in the first recessed structure of described incident light boundary angle θ and described lens body.
5. LED collector lens according to any one of claim 1 to 4, is characterized in that, described LED collector lens is a part for class truncated cone-shaped or class truncated cone-shaped.
6. LED collector lens according to claim 5, is characterized in that, described class truncated cone-shaped is formed around the rotation of its right-angle side by a class right-angled trapezium with curve hypotenuse;
A part for described class truncated cone-shaped is the shape that described class truncated cone-shaped is formed after the one or more plane cutting being parallel to its central axis.
7. LED collector lens according to any one of claim 1 to 4, is characterized in that, the lower arcuate surface of the described first recessed structure and the lower arcuate surface of the described second recessed structure are spherical bottom.
8. LED collector lens according to any one of claim 1 to 4, is characterized in that, also comprise:
Alignment pin, is arranged at the radiator binding face of described LED collector lens, for the described location of LED collector lens on radiator face; And/or
Edge protuberance, arranges the edge of described lens body bottom surface, fixing for lens and light fixture.
9. a LED collector lens group, is characterized in that, comprises the LED collector lens according to any one of N number of Claims 1-4, wherein, and N >=2.
10. LED collector lens group according to claim 9, is characterized in that, described N number of LED collector lens is centrosymmetric shape, and the 360 °/N in interval between two LED collector lenses that is connected is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420602759.2U CN204153700U (en) | 2014-10-17 | 2014-10-17 | Great power LED collector lens and LED collector lens group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420602759.2U CN204153700U (en) | 2014-10-17 | 2014-10-17 | Great power LED collector lens and LED collector lens group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204153700U true CN204153700U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420602759.2U Expired - Fee Related CN204153700U (en) | 2014-10-17 | 2014-10-17 | Great power LED collector lens and LED collector lens group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204153700U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678611A (en) * | 2016-09-23 | 2017-05-17 | 上海南华机电有限公司 | Warning light |
| CN112505807A (en) * | 2020-12-01 | 2021-03-16 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Terahertz wave collimation focusing lens and terahertz wave system |
-
2014
- 2014-10-17 CN CN201420602759.2U patent/CN204153700U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678611A (en) * | 2016-09-23 | 2017-05-17 | 上海南华机电有限公司 | Warning light |
| CN112505807A (en) * | 2020-12-01 | 2021-03-16 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Terahertz wave collimation focusing lens and terahertz wave system |
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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: 20150211 Termination date: 20211017 |