CN202691903U - Light distribution lens of landscape lamp using integrated planar LED (light emitting diode) as light source - Google Patents
Light distribution lens of landscape lamp using integrated planar LED (light emitting diode) as light source Download PDFInfo
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- CN202691903U CN202691903U CN2012203071819U CN201220307181U CN202691903U CN 202691903 U CN202691903 U CN 202691903U CN 2012203071819 U CN2012203071819 U CN 2012203071819U CN 201220307181 U CN201220307181 U CN 201220307181U CN 202691903 U CN202691903 U CN 202691903U
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Abstract
The utility model discloses a light distribution lens of a landscape lamp using an integrated planar LED as light source. The integrated planar LED is mounted on a base, and a light distribution lens matched with the integrated planar LED is used. The lens comprises a recessed arc surface with a symmetric optical axis, a first light distribution curved surface, and a second light distribution curved surface, wherein the recessed arc surface is located at the bottom of the lens, and is connected with the second light distribution curved surface and the base; the first light distribution curved surface is used for distributing light beams emitted by the corresponding LED light source to beams in uniform distribution; and the second light distribution curved surface is used for distributing the beams from the first light distribution curved surface again to form an optical field with an illuminated area in rectangular distribution along the ground. The lens provided by the utility model can distribute the light beams with Lambertian distribution characteristics emitted by the integrated planar LED light source or a single tubular LED to form a rectangular light distribution along the ground, and is wide in application range and more convenient in assembly. A plurality of lenses can be assembled to improve the light utilization rate, and can be used for courtyard, park and passageway to realize uniform illumination on the illuminated area and enhance illuminance of landscapes.
Description
Technical field
The utility model relates to the nonimaging optics technology of LED illumination, in particular, relates to a kind of light-distribution lens of the Landscape Lamp take the integrated form planar LED as light source, is used for the large area lighting of view.
Background technology
LED(Light Emitting Diode, Light-Emitting Diode) New Times of lighting engineering has been opened up in the development of technology.Volume is little because LED has, and the life-span is long, and photoelectric efficiency is high, and the plurality of advantages such as environmental protection and energy saving are so that LED street lighting technology has obtained develop rapidly in recent years.Because the radiation angle of most of led light source is distributed as 110 degree to the lambertian distribution (Lambertian distribution) of 120 degree, but, if do not pass through luminous intensity distribution, according to although scope is broader on the ground, but the illuminance gap at the illuminance at edge and center is excessive, very inhomogeneous of distributing, and many luminous energy are concentrated on the center of field of illumination, but good Landscape Lamp lighting requirement illumination is even, and can acquire a certain degree in the appointed area illuminance.
In addition, Landscape Lamp when mounted, certain distance is arranged, generally also be to install according to rectangular extent, if do not correct through certain luminous intensity distribution, carry out fully in the zone that is difficult between two lamps, reasonably illumination, in order to make the illumination that zone between the bright light can be full and uniform, need to adopt emergent light be approximate rectangular LED light-distribution lens.For make the LED Landscape Lamp under and the illumination in zone between the Landscape Lamp similar, the LED Landscape Lamp also needs to be designed to uniform rectangle light distribution when luminous intensity distribution designs.Which kind of curved surface can be realized the even distribution of illuminance, and how realizing being presented on ground is approximate rectangular optical field distribution.This is the difficult problem that this area need to solve at present.
The utility model content
The technical problems to be solved in the utility model is, for the light utilization that how to improve the LED Landscape Lamp, the rectangular shape of realization emergent ray, a kind of light-distribution lens of the Landscape Lamp take the integrated form planar LED as light source is provided, the illuminance that can increase between the Landscape Lamp is even, and realizes that the field of illumination is approximate rectangular effect.
The scheme that its technical problem that solves the utility model adopts is:
A kind of light-distribution lens of the Landscape Lamp take the integrated form planar LED as light source, led light source is installed on the base, the lens that cover led light source also are installed on the base, and lens comprise respectively cambered surface, the first light distribution curved surface, the second light distribution curved surface about the depression of symmetrical;
The cambered surface of described depression is positioned at the bottom of described lens, be installed in base around, the second light distribution curved surface by the depression cambered surface be connected with base;
Described the first light distribution curved surface is made into the light that is evenly distributed for the light of the lambertian distribution that the led light source with correspondence sends;
Described the second light distribution curved surface be used for will corresponding to the light that is evenly distributed of the first light distribution curved surface gained carry out secondary light-distribution, form the light field that is the class distributed rectangular along the earth's surface;
Described the second light distribution curved surface is surrounded the first light distribution curved surface, has the gap between the first light distribution curved surface, the second light distribution curved surface.
The interstice coverage of described the first light distribution curved surface and the second light distribution curved surface is: 4.594mm-10.781mm
Described the first light distribution curved surface is the spherical light distribution curved surface of a symmetrical revolving body.
The emergent ray of described the first light distribution curved surface and the angle of optical axis are the beam projecting angle, the beam projecting angular region: 44.24 °-89.27 °.
The section edges of described the second light distribution curved surface is by some straight lines and some the rectangular curves that curve is formed by connecting.
The section edges of described the second light distribution curved surface is for by some curves or the rectangular curve that is formed by connecting by some straight lines.
The first light distribution curved surface is in order to the angle of the lambertian distribution light that disperses to be sent by led light source, to next light distribution curved surface; The second light distribution curved surface is in order to be made into the first light distribution curved surface gained disperse light for be approximate rectangular optical field distribution on ground.
The lighting angle of light to the first light distribution curved surface that the edge LED lamp of led light source sends is 79 ° to the maximum; The lighting angle of light to the first light distribution curved surface that center LED lamp sends is 81 ° to the maximum.
Description of drawings
Fig. 1 is the front view of lens in the utility model;
Fig. 2 (a) is the top view of lens in the utility model; Wherein the A-A cross section is the cross section of rectangular the direction in edge by optical axis; Fig. 2 (b) is the side view that passes through the cross section of optical axis along rectangular direction for the A-A cross section;
Fig. 3 (a) is the side view of lens in the utility model, and wherein the B-B cross section is parallel rectangular planar cross-sectional; Fig. 3 (b) is the top view of B-B cross section by parallel rectangular planar cross-sectional;
Fig. 4 is that the A-A cross section is 1/2 of the cross section profile that passes through optical axis along rectangular direction in the utility model;
Fig. 5 a is sent out emergent light and carries out ray tracing and analyze gained surface sections figure by choosing edge LED lamp;
Fig. 5 b is sent out emergent light by Selection Center LED lamp and is carried out ray tracing analysis gained surface sections figure;
Fig. 6 is that the B-B cross section is 1/4 of the profile of parallel rectangular planar cross-sectional in the utility model.
The specific embodiment
As shown in Figure 1, the utility model is the transmissive mirror that is applied to the LED Landscape Lamp, led light source 1 is installed on the base 2, and the lens that cover led light source 1 also are installed on the base 2, and lens comprise respectively cambered surface 31, the first light distribution curved surface 32, the second light distribution curved surface 33 about the depression of symmetrical;
The cambered surface 31 of described depression is positioned at the bottom of lens, be installed in base 2 around, the second light distribution curved surface 33 is connected with base 2 by the cambered surface 31 of depression;
The first light distribution curved surface 32 is made into the light that is evenly distributed for the light of the lambertian distribution that the led light source 1 with correspondence sends;
The second light distribution curved surface 33 be used for will corresponding to the light that is evenly distributed of the first light distribution curved surface 32 gained carry out secondary light-distribution, form the light field that is the class distributed rectangular along the earth's surface;
The second light distribution curved surface 33 is surrounded the first light distribution curved surface 32, the first light distribution curved surface 32, there is the gap in 33 of the second light distribution curved surface.
As shown in Figure 2, (b) curve 1 among the figure, be the second light distribution curved surface 33 at the cross section, A-A position of (a) figure curve obtained, (b) curve 2 among the figure is that the first light distribution curved surface 33 is at the cross section, A-A position of (a) figure curve obtained.Wherein curve 2, become Central Symmetry gained curved surface to be the first light distribution curved surface 32 about optical axis, and it is the spherical light distribution curved surface of class.
The first light distribution curved surface 32 is distributed the relative uniform light that becomes dispersion with the light that LED1 sends lambertian distribution, and the second light distribution curved surface 33 is appointed and got a wherein cross section, and B-B cross section gained distribution of light figure is such as 3(b shown in Fig. 3 (a)) shown in.
As shown in Figure 4, be curve 2, numeric distribution, it is X that its curve is corrected expression formula
2+ Y
2=29.
It is 83 ° that the LED1 emitted light will reach 10 * 10 meters its ray tracing shooting angles of scope of appointment.
Shown in Fig. 5 a, led light source 1 is sent out emergent light and is carried out ray tracing and analyze the gained surface sections by choosing edge LED lamp, and A, C, D are that edge LED lamp emits beam at the curved surface edge and the vertical outgoing gained of LED lamp center O intersection point of the first light distribution curved surface 32.
The O point emergent light of sending out is to the first light distribution curved surface 32(class sphere curved surface) normal angle, namely the incidence angle minimum is 14.9 °, is 20.25 ° to the maximum.
According to Snell law n
1Sin
1=n
2Sin
2
The utility model lampshade refractive index of drawing materials is n
2=1.50349, air n
1=1
Minimum 9.8 ° of relative the first light distribution curved surface of gained 32 angles of emergence, the maximum 13.3 ° of gained plane angle of emergence minimums of drawn firing angle are 44.24 °, drawn firing angle is 83.06 ° to the maximum
At edge LED lamp emergent light, all be made into as the outgoing minimum is 44.24 ° by sphere, the emergent light that is 83.06 ° to the maximum distributes, and will originally satisfy the just sub-distribution of LED light of lambertian distribution, and the originally light source realization of high concentration degree is dispersed relatively.
The LED lamp satisfies lambertian distribution I=I
0COS θ.
Edge LED lamp emergent light to given plane zone subtended angle is 79 °, and in this zone, the luminous intensity that arrives the given plane zone accounts for total luminous intensity
Designated 10 * 10 zones of luminous intensity receive and account for 63.6% of total luminous intensity.This shows, by the emergent light of edge LED lamp emission, the utilization that luminous energy can be compared in the face of appointed area.
Shown in Fig. 5 b, sent out emergent light by Selection Center LED lamp and carry out ray tracing analysis gained surface sections, E, F, G are that edge LED lamp emits beam in the first light distribution curved surface 32 at curved surface edge and the vertical outgoing gained of LED lamp center P intersection point.
ω is that edge LED lamp emergent ray trace arrives 10 * 10 meters appointed area subtended angles,
It is 81 °.
The P point emergent light of sending out is to the first light distribution curved surface 32(class sphere curved surface) normal angle, namely the incidence angle minimum is 1.59 °, is 2.19 ° to the maximum.
According to Snell law n
1Sin
1=n
2Sin
2The minimum θ of relative the first light distribution curved surface of gained 32 angles of emergence
2MIN=1.06 °, the maximum θ of drawn firing angle
2MAX=1.46 °.
Gained plane angle of emergence minimum is 47.06 °, and drawn firing angle is 89.27 ° to the maximum
At edge LED lamp emergent light, all be made into as the outgoing minimum is 47.06 ° by sphere, the emergent light that is 89.27 ° to the maximum distributes, and will originally satisfy the just sub-distribution of LED light of lambertian distribution, and the originally light source realization of high concentration degree is dispersed relatively.
The LED lamp satisfies lambertian distribution: I=I
0COS θ; Center LED lamp emergent light to given plane zone subtended angle is 81 °, and in this zone, the luminous intensity that arrives the given plane zone accounts for total luminous intensity
Designated 10 * 10 zones of luminous intensity receive and account for 64.9% of total luminous intensity.This shows, by the emergent light of center LED lamp emission, the utilization that luminous energy can be compared in the face of appointed area.
In the relatively evenly light distribution of the first light distribution curved surface 32 gained, closer to each other to the center resulting light distribution of LED lamp at edge LED lamp, specifying 10 * 10 meters zones, the utilization rate of luminous intensity is all reached 64%.
Through the 32 gained light distribution of the first light distribution curved surface, reach the second light distribution curved surface 33 through refraction.
B-B shown in Figure 6 cross section is 1/4 of the profile of parallel rectangular planar cross-sectional.
The expression formula of the lateral cross section profile 1/4 of the second light distribution curved surface 33 is
y＝10
-6x+9×10-5x
5-0.0025x
4+0.0314x
3-0.1942x
2+0.4187x+27.87
Through the 32 gained light distribution of the first light distribution curved surface, reach the cross section of the second light distribution curved surface 33 through refraction, exist minute widths σ at edge line, σ → 0 this moment.
By the rectilinear propagation law of light as can be known, evenly propagating in the air through the emergent light of this small circulus, its emergent ray distributes and also must satisfy the characteristics of this exit facet (being this small circulus).That is, the emergent ray by this cross section can obtain approximate rectangular plane of illumination.
Fig. 7 pictorial diagram of the present utility model, in the present embodiment, the class pumpkin lamp high that the second light distribution curved surface 33 forms is 4.5 meters, the illuminance of meter rectangular area, ray tracing to 10 * 10, minimum light illumination is 1.56Lux, average light illumination is 13.22Lux, average light illumination need to reach 10Lux in the Landscape Lamp lighting requirement, this shows, the utility model has satisfied demand, reached described carrying out and reached 13.22Lux in the average light illumination of 10 * 10 meters rectangular areas, and be distributed as rectangular shape, can make the illumination that zone between the light fixture can be full and uniform.
Claims (6)
1. the light-distribution lens of the Landscape Lamp take the integrated form planar LED as light source, described led light source (1) is installed on the base (2), the lens that cover led light source (1) also are installed on the described base (2), it is characterized in that described lens comprise respectively cambered surface (31), the first light distribution curved surface (32), the second light distribution curved surface (33) about the depression of symmetrical;
The cambered surface of described depression (31) is positioned at the bottom of described lens, be installed in base (2) around, the second light distribution curved surface (33) by the depression cambered surface (31) be connected with base (2);
Described the first light distribution curved surface (32) is made into the light that is evenly distributed for the light of the lambertian distribution that the led light source (1) with correspondence sends;
Described the second light distribution curved surface (33) be used for will corresponding to the light that is evenly distributed of the first light distribution curved surface (32) gained carry out secondary light-distribution, form the light field that is the class distributed rectangular along the earth's surface;
Described the second light distribution curved surface (33) is surrounded the first light distribution curved surface (32), and there are the gap in the first light distribution curved surface (32), the second light distribution curved surface between (33).
2. the light-distribution lens of described Landscape Lamp take the integrated form planar LED as light source according to claim 1 is characterized in that described the first light distribution curved surface (32) and the interstice coverage of the second light distribution curved surface (33) are: 4.594mm-10.781mm
3. the light-distribution lens of described Landscape Lamp take the integrated form planar LED as light source according to claim 1 is characterized in that described the first light distribution curved surface (32) is the spherical light distribution curved surface of a symmetrical revolving body.
4. the light-distribution lens of described Landscape Lamp take the integrated form planar LED as light source according to claim 3 is characterized in that the emergent ray of described the first light distribution curved surface (32) and the angle of optical axis are the beam projecting angle, beam projecting angular region: 44.24 °-89.27 °.
5. the light-distribution lens of described Landscape Lamp take the integrated form planar LED as light source according to claim 1, the section edges that it is characterized in that described the second light distribution curved surface (33) is for by some straight lines and some the rectangular curves that curve is formed by connecting.
6. the light-distribution lens of described Landscape Lamp take the integrated form planar LED as light source according to claim 1, the section edges that it is characterized in that described the second light distribution curved surface (33) is for by some curves or the rectangular curve that is formed by connecting by some straight lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203071819U CN202691903U (en) | 2012-06-27 | 2012-06-27 | Light distribution lens of landscape lamp using integrated planar LED (light emitting diode) as light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203071819U CN202691903U (en) | 2012-06-27 | 2012-06-27 | Light distribution lens of landscape lamp using integrated planar LED (light emitting diode) as light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202691903U true CN202691903U (en) | 2013-01-23 |
Family
ID=47547518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203071819U Expired - Fee Related CN202691903U (en) | 2012-06-27 | 2012-06-27 | Light distribution lens of landscape lamp using integrated planar LED (light emitting diode) as light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202691903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777855A (en) * | 2012-06-27 | 2012-11-14 | 广东工业大学 | Light distribution lens of landscape lamp using integrated plane light-emitting diode (LED) as light source |
| CN108087839A (en) * | 2017-12-05 | 2018-05-29 | 厦门佰明光电股份有限公司 | Vehicle side-marker lamp and its lens |
-
2012
- 2012-06-27 CN CN2012203071819U patent/CN202691903U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777855A (en) * | 2012-06-27 | 2012-11-14 | 广东工业大学 | Light distribution lens of landscape lamp using integrated plane light-emitting diode (LED) as light source |
| CN102777855B (en) * | 2012-06-27 | 2014-06-18 | 广东工业大学 | Light distribution lens of landscape lamp using integrated plane light-emitting diode (LED) as light source |
| CN108087839A (en) * | 2017-12-05 | 2018-05-29 | 厦门佰明光电股份有限公司 | Vehicle side-marker lamp and its lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20130627 |