CN102759073B - Reflection cup and LED (Light Emitting Diode) utilizing same - Google Patents
Reflection cup and LED (Light Emitting Diode) utilizing same Download PDFInfo
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- CN102759073B CN102759073B CN201110105796.3A CN201110105796A CN102759073B CN 102759073 B CN102759073 B CN 102759073B CN 201110105796 A CN201110105796 A CN 201110105796A CN 102759073 B CN102759073 B CN 102759073B
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Abstract
The invention relates to a reflection cup and an LED (Light Emitting Diode) utilizing the reflection cup, wherein the reflection cup is a rotary body, and the rotating bus of the rotary body is a broken line; a concave hole used for holding an LED light source is arranged on the bottom part of the reflection cup, and the axial line of the concave hole is overlapped with the optical axis of the reflection cup; and a concave spherical surface is arranged on the light emission surface of the reflection cup, and the sphere centre of the concave spherical surface is located on the optical axis of the reflection cup. The reflection cup uses the broken line as the rotating bus, so that the volume of the LED light fitting can be as small as possible on the condition of meeting the illumination demand, and the light utilization rate is high; and the concave spherical surface on the light emission surface can amplify the angle of the light at the part close to the optical axis of the LED to prevent the light intensity of the part from being over concentrated, so that the LED light fitting has high illumination uniformity within an illumination region with a light emission angle of 40 degrees.
Description
Technical field
The present invention relates to lens technologies field, more particularly, relate to a kind of reflector that has floodlight light distributing function of the LED of being applicable to light fixture and use the LED light fixture of this reflector.
Background technology
In prior art, floodlight mode to LED generally adopts reflector luminous intensity distribution, but this mode is not very desirable to the processing of light, although can pass through reflector luminous intensity distribution, but by reflector luminous intensity distribution, can make this reflector larger along the light intensity of LED optical axis direction, the light intensity of mid portion is higher.
Also have and adopt convex lens to carry out optically focused to LED, but this mode is lower to the utilization rate of LED luminous flux, shows that the light that LED light emitting anger is larger cannot be utilized, finally cause the light efficiency utilization rate of light fixture too low.
Also has at present a class floodlight mirror, on the basis of LED optically focused completely reflecting mirror (as shown in Figure 1), on its exiting surface (100 in Fig. 1), process the effect that densely covered small salient point (or shrinkage pool) is realized floodlight, also there is the mode that adopts exiting surface frosted to process, the floodlight effect that these processing modes reach is all even not, and floodlight angle is generally less, lower to the utilization rate of light.
In addition, the side surface rotary bus of existing reflector is generally straight line or parabola, and the lens sizes that therefore meets luminous intensity distribution is all larger.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, a kind of reflector is provided and uses the light fixture of this reflector.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of reflector, this reflector is revolving body, and the rotation bus of described revolving body is broken line; The bottom of described reflector is provided with for placing the shrinkage pool of LED light source, the axis of described shrinkage pool and the optical axis coincidence of described reflector; The exiting surface of described reflector is provided with concave spherical surface, and the centre of sphere of described concave spherical surface drops on the optical axis of described reflector; The radius of described concave spherical surface is R, and the summit of described concave spherical surface is L to the vertical range of described reflector incidence surface, and reflector Refractive Index of Material is n, and γ is correction factor, and R and L meet following formula:
R=L/[1+ (γ-1)/(n-1)]; Wherein, γ gets 1.1-1.3;
Described rotation bus is joined and forms successively by many line segments, and the terminal of every line segment and the line of described reflector bottom center and the complementary angle of described optical axis included angle increase progressively with 9.5-10.5 ° of angle along light inlet to light direction;
The diameter of described exiting surface is 0.9429～1.3429 with the ratio of the degree of depth of described total reflection lens, and the beam angle of described total reflection lens is 39～41 °.
Reflector of the present invention, wherein, described rotation bus, by six line segments successively end to end formation, is respectively the first line segment, the second line segment, the 3rd line segment, the 4th line segment, the 5th line segment and the 6th line segment; Described reflector incidence surface diameter is D, the centre of luminescence of described LED light source of take is initial point, the optical axis of described reflector is X-axis, and the straight line of also crossing initial point vertical with described X-axis is that Y-axis is set up rectangular coordinate system, and the degree of depth h of described reflector and exiting surface diameter a are determined by following parameter:
It is starting point apart from initial point D/2 place that described the first line segment be take in Y-axis, is 38.5 ° of angles with X-axis, is 10 ° of angles with Y-axis;
It is starting point that described the second line segment be take the terminal of described the first line segment, is 33.5 ° of angles with X-axis, is 20 ° of angles with Y-axis;
It is starting point that described the 3rd line segment be take the terminal of described the second line segment, is 26 ° of angles with X-axis, is 30 ° of angles with Y-axis;
It is starting point that described the 4th line segment be take the terminal of described the 3rd line segment, is 23.5 ° of angles with X-axis, is 40 ° of angles with Y-axis;
It is starting point that described the 5th line segment be take the terminal of described the 4th line segment, is 11 ° of angles with X-axis, is 50 ° of angles with Y-axis;
It is starting point that described the 6th line segment be take the terminal of described the 5th line segment, is 0 ° of angle with X-axis, is 60 ° of angles with Y-axis.
Reflector of the present invention, wherein, the diameter a of described reflector exiting surface is 15-17mm, degree of depth h is 12-15mm.
Reflector of the present invention, wherein, the diameter of described reflector incidence surface is 7-9mm.
Reflector of the present invention, wherein, the diameter of described shrinkage pool is greater than the external diameter that described LED light source inserts described shrinkage pool part, and the degree of depth of described shrinkage pool is greater than the length that described LED light source inserts described shrinkage pool part.
Reflector of the present invention, wherein, described reflector is by transparent material injection mo(u)lding.
Reflector of the present invention, wherein, described transparent material comprises optical glass or optical plastic.
Reflector of the present invention, wherein, the refractive index of described transparent material is greater than 1.5.
Reflector of the present invention, wherein, the side of described reflector is also coated with and increases anti-film.
The present invention solves another technical scheme that its technical problem adopts: construct a kind of LED light fixture, comprise reflector described above and be located at the LED light source in the shrinkage pool of described reflector.
Implement the present invention, there is following beneficial effect: this reflector has adopted broken line as rotation bus, and LED light fixture is being met under the prerequisite of illumination requirement, and volume can accomplish as much as possible little and light efficiency utilization rate is high; Thereby the concave spherical surface of exiting surface can expand the angle of the light of LED dipped beam shaft portion to make the light intensity of this part be unlikely to concentrate very much, make LED light fixture there is higher uniformity of illuminance in light emitting anger is the irradiation area of 40 °.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of LED mirror lens in prior art;
Fig. 2 is the structural representation of a kind of reflector preferred embodiment of the present invention;
Fig. 3 is the side view of a kind of reflector preferred embodiment of the present invention;
Fig. 4 is the front view of a kind of reflector preferred embodiment of the present invention;
Fig. 5 is A-A profile in front view in a kind of reflector preferred embodiment of the present invention;
Fig. 6 is each Parameter Map in a kind of reflector preferred embodiment of the present invention;
Fig. 7 is the index path of a kind of reflector preferred embodiment of the present invention;
Fig. 8 is the distribution curve flux figure of a kind of reflector preferred embodiment of the present invention.
The specific embodiment
Below in conjunction with diagram, the preferred embodiments of the present invention are elaborated.
As shown in Figure 1, simultaneously referring to Fig. 3, Fig. 4 and Fig. 5.In a preferred embodiment of the invention, this reflector 1 is provided with for placing the shrinkage pool 2 of LED light source for the rotation bus revolving body that is broken line and the bottom of reflector 1, the optical axis coincidence of the axis of shrinkage pool 2 and reflector 1.In addition, the exiting surface of reflector 1 is also provided with concave spherical surface 3, and the centre of sphere of concave spherical surface 3 drops on the optical axis of reflector 1.
Wherein, above-mentioned rotation bus is joined and forms successively by many line segments, described rotation bus is joined and forms successively by many line segments, and the line of the terminal of every line segment and reflector 1 bottom center and the complementary angle of reflector 1 optical axis included angle increase progressively with 9.5-10.5 ° of angle along light inlet to light direction; And the diameter of exiting surface is 0.9429～1.3429 with the ratio of the degree of depth of total reflection lens 1, and the beam angle of this total reflection lens 1 is 39～41 °.
The rotation bus of this reflector 1 has adopted broken line, thereby make light fixture in the situation that meeting illumination requirement, volume is that straight line or parabolical reflector are little than rotation bus, and aspect processing, the reflector that rotation bus is broken line is more easy, so manufacturing cost is also lower.Above-mentioned shrinkage pool 2 is columniform, when placing LED light source, should make the optical axis of LED light source and the optical axis coincidence of reflector 1 and allow the luminescence chip of LED light source drop in the plane at incidence surface place of reflector 1.If the diameter of definition shrinkage pool 2 is d, the degree of depth is 1, and diameter d should be selected according to the concrete size of LED light source, conventionally should be greatly than the large 1-2mm of the external diameter of LED insertion portion; And 1 should be slightly larger than the length that LED inserts reflector 1 part.It should be noted that, the present invention is applicable to light emitting anger (half strong angle) for the LED light source between 110-130 °, and the size of LED light source should be selected smaller, external diameter should be not more than 5mm conventionally, the excessive accommodating floodlight effect that can not get of causing of the external diameter of LED light source.Reflector 1 exiting surface is plane, its central authorities are provided with concave spherical surface 3, the centre of sphere of concave spherical surface 3 drops on the optical axis of reflector 1, it plays disperse function to the light of nearly LED light source optical axis part, make the light intensity of this part be unlikely to concentrate very much, and from exiting surface, penetrate after the total reflection of the light of remainder by reflector 1.
Further, the radius of definition concave spherical surface 3 is R, and the summit of concave spherical surface 3 is L to the vertical range of reflector 1 incidence surface, and reflector material therefor refractive index is n, and γ is correction factor, the satisfied following formula of R and L:
R=L/[1+ (γ-1)/(n-1)], wherein, γ gets 1.1-1.3.
Preferably, as shown in Figure 6.The rotation bus of reflector 1, by six line segments successively end to end formation, is respectively the first line segment 101, the second line segment 102, the 3rd line segment 103, the 4th line segment 104, the 5th line segment 105 and the 6th line segment 106.Definition reflector incidence surface diameter is D, and the centre of luminescence of LED light source of take is initial point, and the optical axis of reflector 1 is X-axis, and straight line vertical with X-axis and mistake initial point is that Y-axis is set up rectangular coordinate system, and the degree of depth h of reflector 1 and exiting surface diameter a are determined by following parameter:
It is starting point apart from initial point D/2 place that the first line segment 101 be take in Y-axis, is 38.5 ° of angles with X-axis, is 10 ° of angles with Y-axis;
It is starting point that the second line segment 102 be take the terminal of the first line segment 101, is 33.5 ° of angles with X-axis, is 20 ° of angles with Y-axis;
It is starting point that the 3rd line segment 103 be take the terminal of the second line segment 102, is 26 ° of angles with X-axis, is 30 ° of angles with Y-axis;
It is starting point that the 4th line segment 104 be take the terminal of the 3rd line segment 103, is 23.5 ° of angles with X-axis, is 40 ° of angles with Y-axis;
It is starting point that the 5th line segment 105 be take the terminal of the 4th line segment 104, is 11 ° of angles with X-axis, is 50 ° of angles with Y-axis;
It is starting point that the 6th line segment 106 be take the terminal of the 5th line segment 105, is 0 ° of angle with X-axis, is 60 ° of angles with Y-axis.
Meet the reflector 1 of above-mentioned parameter requirement, wherein, the diameter of reflector 1 exiting surface can be got 15-17mm, and degree of depth h can get 12-15mm.And the diameter of reflector 1 incidence surface can be got 7-9mm.
Above-mentioned parameter is to come according to 40 ° of reverse derivations of light emitting anger of light fixture, if reflector 1 adopts PC material as lens material again, its refractive index is 1.59, and rotation bus meets above-mentioned parameter, and other structural parameters are as shown in the table:
Meet above parameter reflector index path as shown in Figure 7, as can be seen from Figure 7, the light of LED light source mid portion is through the refraction of the concave spherical surface 3 at top and expanded angle, and the light of other parts penetrates from exiting surface after the total reflection of reflector 1.The light that light penetrates towards reflector optical axis one side direction, its exit direction, towards the opposite side direction of optical axis, is interleaved mode outgoing.Again as shown in Figure 8, from the distribution curve flux figure shown in Fig. 8, the light emitting anger of light fixture is about 40 °, in this region, realizes floodlighting, has higher uniformity of illuminance.
Preferably, reflector 1 is by transparent material injection mo(u)lding, and this transparent material comprises that the refractive index of optical glass or optical plastic and material should be greater than 1.5.
Preferably, the side of reflector 1 can also plate and increase anti-film, thereby increases the reflectivity that anti-film can reduce the 1 pair of light of light transmission capacity increase reflector of reflector 1, further improves the reflection efficiency of reflector 1.
In another specific embodiment of the present invention, a kind of LED light fixture, comprises above-mentioned reflector 1 and is located at the LED light source in the shrinkage pool 2 of reflector 1.Owing to having adopted above-mentioned reflector 1, make this LED light fixture illumination in certain light emitting anger more even.
Above embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement accordingly, can not limit the scope of the invention.All equalizations of doing with the claims in the present invention scope change and modify, and all should belong to the covering scope of the claims in the present invention.
Claims (10)
1. a reflector, is characterized in that, this reflector (1) is revolving body, and the rotation bus of described revolving body is broken line; The bottom of described reflector (1) is provided with the shrinkage pool (2) for placing LED light source, the optical axis coincidence of the axis of described shrinkage pool (2) and described reflector (1); The exiting surface of described reflector (1) is provided with concave spherical surface (3), and the centre of sphere of described concave spherical surface (3) drops on the optical axis of described reflector (1); The radius of described concave spherical surface (3) is R, and the summit of described concave spherical surface (3) is L to the vertical range of described reflector (1) incidence surface, and reflector Refractive Index of Material is n, and γ is correction factor, and R and L meet following formula:
R=L/[1+ (γ-1)/(n-1)]; Wherein, γ gets 1.1-1.3;
Described rotation bus is joined and forms successively by many line segments, and the terminal of every line segment and the line of described reflector (1) bottom center and the complementary angle of described optical axis included angle increase progressively with 9.5-10.5 ° of angle along light inlet to light direction;
The ratio of the degree of depth of the diameter of described exiting surface and described reflector (1) is 0.9429～1.3429, and the beam angle of described reflector (1) is 39～41 °.
2. reflector according to claim 1, it is characterized in that, described rotation bus, by six line segments successively end to end formation, is respectively the first line segment (101), the second line segment (102), the 3rd line segment (103), the 4th line segment (104), the 5th line segment (105) and the 6th line segment (106); Described reflector (1) incidence surface diameter is D, the centre of luminescence of described LED light source of take is initial point, the optical axis of described reflector (1) is X-axis, the straight line of also crossing initial point vertical with described X-axis is that Y-axis is set up rectangular coordinate system, and the degree of depth h of described reflector (1) and exiting surface diameter a are determined by following parameter:
It is starting point apart from initial point D/2 place that described the first line segment (101) be take in Y-axis, is 38.5 ° of angles with X-axis, is 10 ° of angles with Y-axis;
It is starting point that described the second line segment (102) be take the terminal of described the first line segment (101), is 33.5 ° of angles with X-axis, is 20 ° of angles with Y-axis;
It is starting point that described the 3rd line segment (103) be take the terminal of described the second line segment (102), is 26 ° of angles with X-axis, is 30 ° of angles with Y-axis;
It is starting point that described the 4th line segment (104) be take the terminal of described the 3rd line segment (103), is 23.5 ° of angles with X-axis, is 40 ° of angles with Y-axis;
It is starting point that described the 5th line segment (105) be take the terminal of described the 4th line segment (104), is 11 ° of angles with X-axis, is 50 ° of angles with Y-axis;
It is starting point that described the 6th line segment (106) be take the terminal of described the 5th line segment (105), is 0 ° of angle with X-axis, is 60 ° of angles with Y-axis.
3. reflector according to claim 2, is characterized in that, the diameter a of described reflector (1) exiting surface is 15-17mm, and degree of depth h is 12-15mm.
4. reflector according to claim 3, is characterized in that, the diameter of described reflector (1) incidence surface is 7-9mm.
5. reflector according to claim 1, it is characterized in that, the diameter of described shrinkage pool (2) is greater than the external diameter that described LED light source inserts described shrinkage pool (2) part, and the degree of depth of described shrinkage pool (2) is greater than the length that described LED light source inserts described shrinkage pool (2) part.
6. reflector according to claim 1, is characterized in that, described reflector (1) is by transparent material injection mo(u)lding.
7. reflector according to claim 6, is characterized in that, described transparent material comprises optical glass or optical plastic.
8. reflector according to claim 6, is characterized in that, the refractive index of described transparent material is greater than 1.5.
9. reflector according to claim 1, is characterized in that, the side of described reflector (1) is also coated with and increases anti-film.
10. a LED light fixture, is characterized in that, comprises the reflector described in claim 1-9 any one and is located at the LED light source in the shrinkage pool (2) of described reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110105796.3A CN102759073B (en) | 2011-04-26 | 2011-04-26 | Reflection cup and LED (Light Emitting Diode) utilizing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110105796.3A CN102759073B (en) | 2011-04-26 | 2011-04-26 | Reflection cup and LED (Light Emitting Diode) utilizing same |
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| Publication Number | Publication Date |
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| CN102759073A CN102759073A (en) | 2012-10-31 |
| CN102759073B true CN102759073B (en) | 2014-01-22 |
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| CN201110105796.3A Active CN102759073B (en) | 2011-04-26 | 2011-04-26 | Reflection cup and LED (Light Emitting Diode) utilizing same |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121548A (en) * | 2013-04-24 | 2014-10-29 | 法雷奥照明公司 | Total reflection type optical reflector and illumination and/or signal indicating device |
| CN109458574A (en) * | 2019-01-02 | 2019-03-12 | 中国科学院苏州生物医学工程技术研究所 | A kind of multilayer reflector and the LED lamp using the multilayer reflector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2746537Y (en) * | 2004-11-23 | 2005-12-14 | 中国电子科技集团公司第十三研究所 | Luminous of reflection lens |
| CN201206781Y (en) * | 2008-03-11 | 2009-03-11 | 保定市大正太阳能光电设备制造有限公司 | LED lamp with reflection cup |
| CN201355001Y (en) * | 2008-12-30 | 2009-12-02 | 上海高柏光电照明有限公司 | LED conjoint reflective cup |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080219000A1 (en) * | 2007-03-09 | 2008-09-11 | Chen-Yueh Fan | Lampshade with at least one LED |
| TWI458119B (en) * | 2008-05-05 | 2014-10-21 | Univ Nat Central | Light mixing apparatus of light emitting diode |
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- 2011-04-26 CN CN201110105796.3A patent/CN102759073B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2746537Y (en) * | 2004-11-23 | 2005-12-14 | 中国电子科技集团公司第十三研究所 | Luminous of reflection lens |
| CN201206781Y (en) * | 2008-03-11 | 2009-03-11 | 保定市大正太阳能光电设备制造有限公司 | LED lamp with reflection cup |
| CN201355001Y (en) * | 2008-12-30 | 2009-12-02 | 上海高柏光电照明有限公司 | LED conjoint reflective cup |
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| CN102759073A (en) | 2012-10-31 |
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