CN103994397A - Lamp and reflector thereof - Google Patents
Lamp and reflector thereof Download PDFInfo
- Publication number
- CN103994397A CN103994397A CN201310055134.9A CN201310055134A CN103994397A CN 103994397 A CN103994397 A CN 103994397A CN 201310055134 A CN201310055134 A CN 201310055134A CN 103994397 A CN103994397 A CN 103994397A
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- China
- Prior art keywords
- light
- reflector
- reflective surface
- light source
- optical axis
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Abstract
The invention discloses a lamp and a reflector of the lamp. The lamp comprises an LED point light source and the reflector, the reflecting faces of the reflector are rotating faces, a rotating axis of the reflector is an optical axis, the reflecting faces comprise the first reflecting face, the second reflecting face, the third reflecting face and the fourth reflecting face, the diameter of the reflector is gradually increased along the light emitting direction, light sent out by the light source passes through reflecting light of the four reflecting faces and is crossed with the optical axis, the included angles are 10 degree to 20 degrees, 20 degrees to 25 degrees, 25 degrees to 30 degrees and 30 degrees to 45 degrees respectively, the four reflecting faces are sequentially in linkage in the light emitting direction, generatrixes of the four reflecting face are straight lines, light of the light source is reflected to specified angles respectively, and therefore the light of the light source is distributed to the specific space position, the required specific light shape is formed, the specific illuminance requirement is met, the high requirement for central beam angles and average illuminance can be met, the light energy utilization rate is improved, and under the same illuminance requirement, compared with other light sources, the energy consumption of the light source is lower, and the light source is more environmentally friendly. Meanwhile, the reflector is simple in structure and easy to obtain.
Description
Technical field
The present invention relates to LED lighting field, relate in particular to a kind of light fixture and reflector thereof.
Background technology
Along with the maturation of LED chip and packaging technology, LED brightness requirement is enough to meet the demand of each lighting field at present, and LED solid-state illumination has become trend.It is energy-conservation, environmental protection, safety, has colour rendering index high, the life-span long etc. performance characteristics; Its distinguishing feature such as also to have volume little, and light efficiency is high, and energy consumption is little simultaneously.LED light source is widely applied to the every field of scientific experiment, production, life with its obvious advantage, as the application of the lightings such as road, tunnel, view, indoor furniture, commercial advertisement, industry manufacture.
Luminous from incandescent lamp, metal halid lamp etc. is that the omnidirectional conventional light source of 360 degree is different, LED by the structures shape of its chip package luminous diversity, as several in lambert's type, Quartering shot type, bat type and light-focusing type.Therefore in concrete application, for meeting industry or the national standard in this field, need to carry out secondary optical design, especially high-power LED light source, thereby make the illumination range, light distribution, illumination etc. of LED meet the demand of the sector illumination.In carrying out the secondary optical design of LED application, due to most of light of the reason LED of lighting angle without reflector direct irradiation go out, this causes the optical energy loss of LED very large.How effectively utilizing this part luminous energy is that LED light source is applied problem to be solved.
In actual applications, as fields such as microscope local lighting, show piece illumination, laboratory special lighting, product appearance check illuminations, need to use the light fixture of beam angle in meeting, the contour illumination requirement of uniform-illumination, in prior art, light fixture cannot meet this demand, or has adopted complicated structure to realize.
Summary of the invention
Technical problem to be solved by this invention is, a kind of middle beam angle, uniform-illumination, the raising efficiency of light energy utilization and light fixture and reflector thereof simple in structure are provided.
In order to solve the problems of the technologies described above, on the one hand, embodiments of the invention provide a kind of reflector, and it has the reflective surface of the light sending for reflection source, and described reflective surface is the surfaces of revolution, and its rotating shaft is optical axis; Described reflective surface comprises the first reflective surface, the second reflective surface, the 3rd reflective surface and the 4th reflective surface; The diameter of described reflector increases gradually along light direction;
The reflection ray that the light that described light source sends reflects through described the first reflective surface and optical axis intersection and angle are 10 ~ 20 degree, the reflection ray that the light that described light source sends reflects through described the second reflective surface and optical axis intersection and angle are 20 ~ 25 degree, the reflection ray that the light that described light source sends reflects through described the 3rd reflective surface and optical axis intersection and angle are 25 ~ 30 degree, and the reflection ray that the light that described light source sends reflects through described the 4th reflective surface and optical axis intersection and angle are 30 ~ 45 degree;
Described the first reflective surface, the second reflective surface, the 3rd reflective surface and the 4th reflective surface are connected and four bus is straight line successively along light direction.
Wherein, described reflective surface is provided with vacuum plated aluminum film.
Wherein, the light inputting end of described reflector is provided with the fixed head for fixing described light source.
Wherein, described fixed head and described reflector are one-body molded.
Wherein, described reflector is by PC material ejection formation.
On the other hand, embodiments of the invention provide a kind of light fixture, and described light fixture comprises light source, and described light fixture also comprises aforesaid reflector, and described light source is LED spot light and the light inputting end that is fixed on described reflector.
Wherein, described LED spot light adopts lambert's type illuminator.
Embodiment of the present invention tool has the following advantages or beneficial effect; Four sections of reflective surfaces of reflector respectively by the light reflection of light source to specified angle, thereby source light is assigned on specific locus, form required specific light shape, meet specific illumination requirement, thereby obtain desirable light distribution effect, the high demand of beam angle, uniform illumination in realization, improved the efficiency of light energy utilization, lower than other light sources energy consumption under equal illumination requires, more environmental protection.Reflector structure is simple simultaneously, easily realizes, and has solved the luminous intensity distribution difficulty that LED light source self luminous characteristics causes simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention 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 some embodiments of the present invention, 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 the schematic diagram of the light fixture that provides of the preferred embodiment of the present invention;
Fig. 2 is the axial section of the light fixture in Fig. 1;
Fig. 3 is the structure design principle figure of the reflector that provides of the preferred embodiment of the present invention;
Fig. 4 is the curve of light distribution figure of the light fixture that provides of the preferred embodiment of the present invention;
Fig. 5 is the Illumination Distribution audio-visual picture of the light fixture that provides of the preferred embodiment of the present invention;
Fig. 6 is the Illumination Distribution curve map of the light fixture that provides of the preferred embodiment of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Referring to Fig. 1 to Fig. 2, be a kind of light fixture that the preferred embodiment of the present invention provides, described light fixture comprises light source 2 and reflector 1, described light source 2 is spot light and the light inputting end that is fixed on described reflector 1.As preferably, described light source 2 is LED spot light, and further, LED spot light adopts lambert's type illuminator.
Reflector 1 has the reflective surface of the light sending for reflection source 2, and described reflective surface is the surfaces of revolution, and its rotating shaft is optical axis; The diameter of described reflector increases gradually along light direction.
Described reflective surface comprises the first reflective surface 11, the second reflective surface 12, the 3rd reflective surface 13 and the 4th reflective surface 14.The reflection ray that the light that described light source 2 sends reflects through described the first reflective surface 11 and optical axis intersection and angle are 10 ~ 20 degree, the reflection ray that the light that described light source 2 sends reflects through described the second reflective surface 12 and optical axis intersection and angle are 20 ~ 25 degree, the reflection ray that the light that described light source 2 sends reflects through described the 3rd reflective surface 13 and optical axis intersection and angle are 25 ~ 30 degree, and the reflection ray that the light that described light source 2 sends reflects through described the 4th reflective surface 14 and optical axis intersection and angle are 30 ~ 45 degree.
Described the first reflective surface 11, the second reflective surface 12, the 3rd reflective surface 13 and the 4th reflective surface 14 are connected and four bus is straight line successively along light direction.
If the reflection ray that the light that described light source 2 sends reflects through described reflective surface and optical axis intersection and angle are α.According to the size of the α of reflecting surface reflection ray and reflection law, can try to achieve the concrete structure of reflecting surface integral body, specific as follows.
As shown in Figure 3, the optical axis of take is X-axis, reflector 1 radially sets up coordinate system as Y-axis, light source 2 positions as initial point, the bus 10 of every section of reflective surface is the straight line that is positioned at this coordinate system, if the coordinate of the point of the bus of every section of reflective surface 10 in coordinate system is (x, y), from trigonometric function, y=xtan θ.Coordinate in the terminal A near light source 2 is (x
i, y
i), its coordinate away from the terminal B of light source 2 is (x
i+1, y
i+1).If the bus of every joint reflective surface 10 is β with the angle of optical axis, the light that light source 2 directly sends and the angle of optical axis are θ, known according to reflection law, θ=α+2 β.Light source 2 is emitted to bus two-end-point A, the light of B and the angle of optical axis and is respectively θ
i, θ
i+1.Pass between every section of bus two-end-point A, B is y
i+1-y
i=(x
i+1-x
i) tan β, y
i=x
itan θ
i, y
i+1=x
i+1tan θ
i+1, θ
i+1=α
i+1+ 2 β, θ
i=α
i+ 2 β, the α value between two-end-point is two endpoint values of α scope.Accordingly, by the coordinate (x of terminal B
i+1, y
i+1) can determine the coordinate (x of terminal A
i, y
i).
In the present embodiment, first determine that the 4th reflective surface bus, away from the end points coordinate of light source 2, can calculate it near the end points coordinate of light source 2 by above-mentioned principle.The 4th reflective surface bus is the 3rd reflective surface bus away from the end points coordinate of light source 2 near the end points coordinate of light source 2, the like, can determine the shape of whole reflective surface.Different the 4th reflective surface buses can be determined the shape of different reflective surfaces away from the end points coordinate of light source 2.The 4th reflective surface bus is reflector bright dipping end away from the end points place circumference of light source 2, relative position between itself and light source 2 can be determined the size of whole reflector, therefore in specific implementation process, can go out according to the installing space calculative determination of reflector 1 size shape of whole reflector 1, and can not have influence on the light distribution effect of reflector.
For the ease of being fixedly connected with of light source 2 and reflector 1, the light inputting end of reflector 1 is provided with the fixed head 14 for fixed light source 2, and light source 2 is fixed on fixed head 14.As preferably, fixed head 14 is one-body molded with reflector 1, to guarantee the overall construction intensity of reflector, is convenient to processing and fabricating simultaneously.
Reflective surface is provided with vacuum plated aluminum film, to reach more than 80% reflectivity.
As preferably, reflector 1 is by PC material ejection formation, so that processing.
Four sections of reflective surfaces of reflector 1 respectively by the light reflection of light source 2 to specified angle, thereby source light is assigned on specific locus, form required specific light shape, meet specific illumination requirement, thereby obtain desirable light distribution effect, the high demand of beam angle, uniform illumination in realization, improved the efficiency of light energy utilization, lower than other light sources energy consumption under equal illumination requires, more environmental protection.Reflector 1 of the present invention is simple in structure, easily realizes, and has solved the luminous intensity distribution difficulty that LED light source self luminous characteristics causes simultaneously.
In this specific embodiment, light source adopts the LED of an OSRAM-LUW-W5AM, and its power is that 3W, light efficiency are 50lm/w, is arranged on reflector.Simulation light fixture hangs over 0.4m height, on work top, in the scope of radius 0.15m, its average illumination is: 781lux, as shown in Figure 4, as shown in Figure 5, Figure 6, this light fixture has been realized the high demand of middle beam angle, uniform illumination to the corresponding Illumination Distribution figure of light fixture to the curve of light distribution figure of light fixture as seen.
Above-described embodiment, does not form the restriction to this technical scheme protection domain.The modification of doing within any spirit at above-mentioned embodiment and principle, be equal to and replace and improvement etc., within all should being included in the protection domain of this technical scheme.
Claims (7)
1. a reflector, the reflective surface that it has the light sending for reflection source, is characterized in that,
Described reflective surface is the surfaces of revolution, and its rotating shaft is optical axis; Described reflective surface comprises the first reflective surface, the second reflective surface, the 3rd reflective surface and the 4th reflective surface; The diameter of described reflector increases gradually along light direction;
The reflection ray that the light that described light source sends reflects through described the first reflective surface and optical axis intersection and angle are 10 ~ 20 degree, the reflection ray that the light that described light source sends reflects through described the second reflective surface and optical axis intersection and angle are 20 ~ 25 degree, the reflection ray that the light that described light source sends reflects through described the 3rd reflective surface and optical axis intersection and angle are 25 ~ 30 degree, and the reflection ray that the light that described light source sends reflects through described the 4th reflective surface and optical axis intersection and angle are 30 ~ 45 degree;
Described the first reflective surface, the second reflective surface, the 3rd reflective surface and the 4th reflective surface are connected and four bus is straight line successively along light direction.
2. reflector according to claim 1, is characterized in that, described reflective surface is provided with vacuum plated aluminum film.
3. reflector according to claim 1, is characterized in that, the light inputting end of described reflector is provided with the fixed head for fixing described light source.
4. reflector according to claim 3, is characterized in that, described fixed head and described reflector are one-body molded.
5. according to the reflector described in claim 1-4 any one, it is characterized in that, described reflector is by PC material ejection formation.
6. a light fixture, described light fixture comprises light source, it is characterized in that, and described light fixture also comprises reflector described in claim 1 to 5 any one, and described light source is LED spot light and the light inputting end that is fixed on described reflector.
7. light fixture according to claim 6, is characterized in that, described LED spot light adopts lambert's type illuminator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310055134.9A CN103994397A (en) | 2013-02-20 | 2013-02-20 | Lamp and reflector thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310055134.9A CN103994397A (en) | 2013-02-20 | 2013-02-20 | Lamp and reflector thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103994397A true CN103994397A (en) | 2014-08-20 |
Family
ID=51308646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310055134.9A Pending CN103994397A (en) | 2013-02-20 | 2013-02-20 | Lamp and reflector thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103994397A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112344293A (en) * | 2019-08-06 | 2021-02-09 | 日亚化学工业株式会社 | Lighting device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101556025A (en) * | 2009-05-19 | 2009-10-14 | 华南理工大学 | Reflective cup for LED lamp |
| CN101832510A (en) * | 2010-05-19 | 2010-09-15 | 海洋王照明科技股份有限公司 | Flood light reflector, flood light and motor boat |
-
2013
- 2013-02-20 CN CN201310055134.9A patent/CN103994397A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101556025A (en) * | 2009-05-19 | 2009-10-14 | 华南理工大学 | Reflective cup for LED lamp |
| CN101832510A (en) * | 2010-05-19 | 2010-09-15 | 海洋王照明科技股份有限公司 | Flood light reflector, flood light and motor boat |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112344293A (en) * | 2019-08-06 | 2021-02-09 | 日亚化学工业株式会社 | Lighting device |
| CN112344293B (en) * | 2019-08-06 | 2023-12-08 | 日亚化学工业株式会社 | Lighting device |
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Application publication date: 20140820 |