CN103471033B - LED (light emitting diode) lens and lens module thereof - Google Patents
LED (light emitting diode) lens and lens module thereof Download PDFInfo
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- CN103471033B CN103471033B CN201310374041.2A CN201310374041A CN103471033B CN 103471033 B CN103471033 B CN 103471033B CN 201310374041 A CN201310374041 A CN 201310374041A CN 103471033 B CN103471033 B CN 103471033B
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Abstract
The invention discloses an LED lens and a lens module thereof. The LED lens comprises a light scattering unit, a reflecting unit and a base, wherein the profile of the outer surface of the C0-180 section of the light scattering unit is hemispherical or similarly hemispherical; the profile of the inner surface of the C0-180 section of the light scattering unit is conical or similarly conical; the profiles of the outer surface and the inner surface of a C90-270 section of the light scattering unit are asymmetric; the reflecting unit is positioned on one side of the light scattering unit; the LED lens is provided with an inner cavity; the surface of the inner cavity is the inner surface of the LED lens; the vertex of the outer surface of the light scattering unit is vertically aligned with the vertex of the inner surface of the LED lens; and the LED lens module consists of a plurality of LED lenses. By the illumination function of the LED lens, asymmetric batwing light distribution applicable to street illumination can be realized, total reflection of the surface of the lens is effectively reduced, a plurality of light rays can exit at one step and illuminate the area of a road surface, and the use ratio on luminous flux of illumination can be increased.
Description
Technical field
The present invention relates to technical field of LED illumination, particularly relate to a kind of LED lens and lens module thereof.
Background technology
LED is easy to realize various forms of luminous intensity distribution, a kind of conventional technological means carries out luminous intensity distribution design by secondary lens, namely install on the basis making intact single LED lamp independently lens to carry out luminous intensity distribution design, the lens adopted are generally the lens of polymethyl methacrylate (PMMA) material, these lens are independent of outside single LED lamp, be called secondary lens, secondary lens and single LED lamp form optical system jointly, obtain target luminous intensity distribution form.
C-planar system is a kind of conventional measurement and describes the coordinate system of light source or the distribution of light fixture spatial light intensity, and this system can be used in the luminosity measurement of LED light source or light fixture.Measure under C-planar system and describe LED light source or light fixture spatial light intensity distribution, light distribution is generally described by distribution curve flux; Distribution curve flux is under polar coordinate system or rectangular coordinate system, the light intensity value corresponding to all angles in certain the luminous intensity distribution plane marked, and depicts the curve that light intensity value changes with angle; The distribution curve flux that what people generally paid close attention to and analyzed is in these two luminous intensity distribution planes of C0-C180 and C90-C270; From distribution curve flux figure, the distribution curve flux in these two planes can be overlap, and also can be diverse; The angle that we define the left side of 0 degree of angle line in distribution curve flux figure is positive-angle (representing with "+"), the angle on the right side of 0 degree of angle line is negative angle (representing with "-"), distribution curve flux in so each plane can be symmetrical expression (symmetrical relative to 0 degree of angle line), also can be asymmetric (asymmetric relative to 0 degree of angle line left and right).Can the value at reading optical beam angle from distribution curve flux, the beam angle that we define distribution curve flux in certain luminous intensity distribution plane is angle value that the angle value+largest light intensity angle line dextrorotation turned over when largest light intensity angle line is rotated counterclockwise to 50% largest light intensity angle line on beam angle=distribution curve flux turns over when going to the angle line of 50% largest light intensity.In addition, in order to express easily, we are called C0-C180 cross section by LED lens arrangement with the face of C0-C180 luminous intensity distribution planes overlapping, are called C90-C270 cross section with the face of C90-C270 luminous intensity distribution planes overlapping, and C0-C180 cross section and C90-270 cross section are as the sectional view plane of LED lens arrangement.
In street lighting scene, common car lane is arranged as 2 tracks, track to 8, some street also comprises central partition, greenbelt etc., common lamp stand spread pattern has one-sided arrangement, Bilateral Symmetry arrangement, bilateral to be staggered, the ratio of lamp stand spacing and pole height is generally 3 to 5, and the lamp stand cantilever elevation angle is 0 degree to 15 degree; There are wider bicycle lane and the street on pavement for some, symmetrical on a lamp stand two street lamps can be installed, irradiate car lane direction and bicycle lane direction respectively.A kind of light-configuration mode being suitable for street lighting is asymmetric batswing tab luminous intensity distribution, i.e.: in C0-C180 plane (on corresponding road travel direction), its distribution curve flux is bat aerofoil profile, and specifically beam angle is 140 degree to 150 degree, and the angle corresponding to largest light intensity value is ± 60 degree to ± 70 degree; In C90-C270 plane (on corresponding road width direction), its distribution curve flux is asymmetric, and specifically beam angle is 60 degree to 90 degree, and the angle corresponding to largest light intensity value is that+10 degree are to+40 degree; So make light more lead illumination value direction, reduce unnecessary ray waste, effectively can improve street lighting luminous flux utilization rate and the road lighting uniformity.
The secondary lens luminous intensity distribution technology of road lighting adopts the LED light source of lambert's type luminous intensity distribution of beam angle about 120 degree to add bimodal pattern or a multimodal secondary lens, carrys out realize target luminous intensity distribution.As described in Chinese patent application 201210072443.2 and Chinese patent application 201210574643.8, two or more high point is arranged at the profile top of lens, be similar to the shape at two peaks or multiple peak, the defect of this technology is: on the surface of lens, there is the total reflection of light in surf zone especially between the two peaks, namely a part of light cannot be disposable from lens surface outgoing, but be reflected to lens profile or below, this part light cannot be irradiated to region, road surface, and cause optical energy loss, the reduction of utilization rate of namely throwing light on and light efficiency reduce.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of LED lens, comprise: astigmatism unit, reflector element, base, multiple described LED lens composition LED lens module, illumination functions can realize the asymmetric batswing tab luminous intensity distribution being suitable for street lighting, and effectively reduce the total reflection of lens surface, make the disposable outgoing of more light and be irradiated to region, road surface, being conducive to improving illuminating light flux utilization rate.
For achieving the above object, the present invention adopts following technical scheme:
A kind of LED lens, comprise: astigmatism unit, reflector element, base, the outer surface profile in the C0-180 cross section of astigmatism unit is hemispherical or near hemispherical, the inner surface profile in the C0-180 cross section of astigmatism unit is taper or approximate cone-shape, outer surface profile and the inner surface profile in the C90-270 cross section of astigmatism unit are unsymmetrical, and reflector element is positioned at the side of astigmatism unit; LED lens have inner chamber, and the surface of inner chamber is LED inner lens surfaces, vertically align with LED inner lens surfaces summit in the summit of astigmatism unit outer surface.
Further, the forward and backward surface profile of the horizontal cross-section of described reflector element is linear or convex or arcs of recesses.
Further, the height of described reflector element is greater than the height of astigmatism unit, and the length of reflector element is greater than the length of astigmatism unit.
Further, described reflector element is positioned at C90 side or the C270 side of astigmatism unit.
Further, the surface of described inner chamber comprises the inner surface of astigmatism unit and the inner surface of base.
Further, placing LED light source in the inner chamber of described LED lens, vertically aligns with the summit of described astigmatism unit outer surface in the summit of LED light source.
Further, described C90-270 cross section by the summit of LED light source and the determined axle in summit of described astigmatism unit outer surface, and comprises the upper surface central point of described reflector element.
Further, the summit of LED light source and the determined axle in summit of described astigmatism unit are passed through in described C0-180 cross section, and perpendicular to C90-270 cross section.
A kind of LED lens module, comprises multiple described LED lens, and multiple described LED lens can form integral structure.
Compared with prior art, technique scheme has the following advantages:
On the one hand, illumination functions can realize the asymmetric batswing tab luminous intensity distribution being suitable for street lighting, especially can meet the road lighting uniformity that lamp stand spacing and pole height ratio are greater than the situation of 4; On the other hand, effectively reduce the total reflection of lens surface, make the disposable outgoing of more light and be irradiated to region, road surface, be conducive to improving illuminating light flux utilization rate.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the LED lens that Fig. 1 provides for the embodiment of the present invention one;
The C0-180 cross-sectional view of the LED lens that Fig. 2 provides for the embodiment of the present invention one;
The C90-270 cross-sectional view of the LED lens that Fig. 3 provides for the embodiment of the present invention one;
The top view of the LED lens that Fig. 4 provides for the embodiment of the present invention one;
The top view of the LED light source that Fig. 5 provides for the embodiment of the present invention one, two, three;
The LED lens that Fig. 6 provides for the embodiment of the present invention one and the exploded view that LED light source combines;
The LED lens that Fig. 7 provides for the embodiment of the present invention one and the C0-180 cross-sectional view that LED light source combines;
The LED lens that Fig. 8 provides for the embodiment of the present invention one and the C90-270 cross-sectional view that LED light source combines;
The structural representation of the LED lens that Fig. 9 provides for the embodiment of the present invention two;
The C0-180 cross-sectional view of the LED lens that Figure 10 provides for the embodiment of the present invention two;
The C90-270 cross-sectional view of the LED lens that Figure 11 provides for the embodiment of the present invention two;
The top view of the LED lens that Figure 12 provides for the embodiment of the present invention two;
The LED lens that Figure 13 provides for the embodiment of the present invention two and the exploded view that LED light source combines;
The LED lens that Figure 14 provides for the embodiment of the present invention two and the C0-180 cross-sectional view that LED light source combines;
The LED lens that Figure 15 provides for the embodiment of the present invention two and the C90-270 cross-sectional view that LED light source combines;
The structural representation of the LED lens that Figure 16 provides for the embodiment of the present invention three;
The C0-180 cross-sectional view of the LED lens that Figure 17 provides for the embodiment of the present invention three;
The C90-270 cross-sectional view of the LED lens that Figure 18 provides for the embodiment of the present invention three;
The top view of the LED lens that Figure 19 provides for the embodiment of the present invention three;
The LED lens that Figure 20 provides for the embodiment of the present invention three and the exploded view that LED light source combines;
The LED lens that Figure 21 provides for the embodiment of the present invention three and the C0-180 cross-sectional view that LED light source combines;
The LED lens that Figure 22 provides for the embodiment of the present invention three and the C90-270 cross-sectional view that LED light source combines;
The structural representation of the LED lens module that Figure 23 provides for the embodiment of the present invention four;
The structural representation of the LED lens module that the further prioritization scheme that Figure 24 is the embodiment of the present invention four provides;
The light schematic diagram in the C0-180 cross section of the LED lens that Figure 25 (1) proposes for the embodiment of the present invention one, two, three;
The light schematic diagram in the C90-270 cross section of the LED lens that Figure 25 (2) proposes for the embodiment of the present invention one, two, three;
The light schematic diagram of the horizontal cross-sectional profile of the reflector element rear surface of the LED lens that Figure 26 (1) proposes for the embodiment of the present invention one;
The light schematic diagram of the horizontal cross-sectional profile of the reflector element rear surface of the LED lens that Figure 26 (2) proposes for the embodiment of the present invention two;
The light schematic diagram of the horizontal cross-sectional profile of the reflector element rear surface of the LED lens that Figure 26 (3) proposes for the embodiment of the present invention three;
The distribution curve flux figure of the LED light source that Figure 27 proposes for the embodiment of the present invention one, two, three;
The LED lens that Figure 28 proposes for the embodiment of the present invention one, two, three and the distribution curve flux figure that LED light source combines;
Figure 29 is the distribution curve flux figure of the further prioritization scheme of the embodiment of the present invention four;
Figure 30 (1) is a kind of in prior art structural representation of LED lens;
Figure 30 (2) is a kind of in prior art C0-180 cross-sectional view of LED lens;
Figure 30 (3) is a kind of in prior art light schematic diagram of C0-180 cross section of LED lens;
Figure 31 (1) is the structural representation of LED lens another kind of in prior art;
Figure 31 (2) is the C0-180 cross-sectional view of LED lens another kind of in prior art;
Figure 31 (3) is the light schematic diagram in the C0-180 cross section of LED lens another kind of in prior art;
Figure 32 is the light schematic diagram in the C0-180 cross section of another LED lens in prior art;
Figure 33 is the light schematic diagram in the C90-270 cross section of another LED lens in prior art.
There is shown: 1-LED lens, 11-astigmatism unit, 12-reflector element, 13-base, 14-inner chamber, 15-astigmatism unit outer surface, 16-LED inner lens surfaces, 2-LED light source, 3-LED light source module.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Set forth a lot of detail in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
Secondly, the present invention is described in detail in conjunction with schematic diagram, and when describing the embodiment of the present invention in detail, for ease of illustrating, device architecture figure can disobey general ratio and make local scale, and described schematic diagram is example, and it should not limit the scope of protection of the invention at this.In addition, the three-dimensional space of length, width and height should be comprised in actual fabrication.
Embodiment one:
With reference to the structural representation of the LED lens that figure 1, Fig. 1 provides for the embodiment of the present invention one; As can be seen from the figure, the LED lens 1 that the embodiment of the present invention one provides comprise: astigmatism unit 11, reflector element 12, base 13, and astigmatism unit 11 and reflector element 12 to be positioned at above base 13, are integrated.
With reference to the C0-180 cross-sectional view of the LED lens that figure 2, Fig. 3, Fig. 2 provide for the embodiment of the present invention one, the C90-270 cross-sectional view of the LED lens that Fig. 3 provides for the embodiment of the present invention one; As can be seen from the figure, LED lens 1 have inner chamber 14, and inner chamber 14 is surrounded by the astigmatism unit 11 of LED lens 1 and base 13, and the surface of inner chamber 14 is LED inner lens surfaces 16, comprises the inner surface of astigmatism unit 11 and the inner surface of base 13; Outer surface 15 profile in the C0-180 cross section of astigmatism unit 11 is near hemispherical, the inner surface profile in the C0-180 cross section of astigmatism unit 11 is approximate cone-shape, outer surface 15 profile and the inner surface profile in the C90-270 cross section of astigmatism unit 11 are unsymmetrical, and reflector element 12 is positioned at the C270 side of astigmatism unit 11.
With reference to figure 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, the top view of the LED lens that Fig. 4 provides for the embodiment of the present invention one, the top view of the LED light source that Fig. 5 provides for the embodiment of the present invention one, two, three, the LED lens that Fig. 6 provides for the embodiment of the present invention one and the exploded view that LED light source combines, the LED lens that Fig. 7 provides for the embodiment of the present invention one and the C0-180 cross-sectional view that LED light source combines, the LED lens that Fig. 8 provides for the embodiment of the present invention one and the C90-270 cross-sectional view that LED light source combines; As can be seen from the figure, the forward and backward surface profile of the horizontal cross-section of reflector element 12 is linear, and the height of reflector element 12 is greater than the height of astigmatism unit 11, and the length of reflector element 12 is greater than the length of astigmatism unit 11; Place LED light source 2 in the inner chamber 14 of LED lens 1, the summit O of LED light source 2 vertically aligns with the summit B of described astigmatism unit 11, and the summit B of astigmatism unit 11 vertically aligns with the summit C of LED inner lens surfaces 16; Described C90-270 cross section is by the summit O of the LED light source 2 and determined axle OB of summit B of described astigmatism unit, and comprise the upper surface central point A of described reflector element 12, the summit O of the LED light source 2 and determined axle OB of summit B of described astigmatism unit 11 is passed through in C0-180 cross section, and perpendicular to C90-270 cross section.
Embodiment two:
With reference to the structural representation of the LED lens that figure 9, Fig. 9 provides for the embodiment of the present invention two; As can be seen from the figure, the LED lens 1 that the embodiment of the present invention two provides comprise: astigmatism unit 11, reflector element 12, base 13, and astigmatism unit 11 and reflector element 12 to be positioned at above base 13, are integrated.
With reference to Figure 10, Figure 11, the C0-180 cross-sectional view of the LED lens that Figure 10 provides for the embodiment of the present invention two, the C90-270 cross-sectional view of the LED lens that Figure 11 provides for the embodiment of the present invention two; As can be seen from the figure, LED lens 1 have inner chamber 14, and inner chamber 14 is surrounded by the astigmatism unit 11 of LED lens 1 and base 13, and the surface of inner chamber 14 is LED inner lens surfaces 16, comprises the inner surface of astigmatism unit 11 and the inner surface of base 13; Outer surface 15 profile in the C0-180 cross section of astigmatism unit 11 is near hemispherical, the inner surface profile in the C0-180 cross section of astigmatism unit 11 is approximate cone-shape, outer surface 15 profile and the inner surface profile in the C90-270 cross section of astigmatism unit 11 are unsymmetrical, and reflector element 12 is positioned at the C270 side of astigmatism unit 11.
With reference to Figure 12, Figure 13, Figure 14, Figure 15, the top view of the LED lens that Figure 12 provides for the embodiment of the present invention two, the LED lens that Figure 13 provides for the embodiment of the present invention two and the exploded view that LED light source combines, the LED lens that Figure 14 provides for the embodiment of the present invention two and the C0-180 cross-sectional view that LED light source combines, the LED lens that Figure 15 provides for the embodiment of the present invention two and the C90-270 cross-sectional view that LED light source combines; As can be seen from the figure, the front surface profile of the horizontal cross-section of reflector element 12 is linear, and rear surface profile is outer arcuate, and the height of reflector element 12 is greater than the height of astigmatism unit 11, and the length of reflector element 12 is greater than the length of astigmatism unit 11; Place LED light source 2 in the inner chamber 14 of LED lens 1, vertically aliging with the summit of described astigmatism unit 11 in the summit of LED light source 2, vertically aligns with the summit of LED inner lens surfaces 16 in the summit of astigmatism unit 11, and its principle is consistent with described in embodiment one; The definition in described C90-270 cross section and C0-180 cross section is consistent with described in embodiment one.
Embodiment three:
With reference to the structural representation of the LED lens that Figure 16, Figure 16 provide for the embodiment of the present invention three; As can be seen from the figure, the LED lens 1 that the embodiment of the present invention three provides comprise: astigmatism unit 11, reflector element 12, base 13, and astigmatism unit 11 and reflector element 12 to be positioned at above base 13, are integrated.
With reference to Figure 17, Figure 18, the C0-180 cross-sectional view of the LED lens that Figure 17 provides for the embodiment of the present invention three, the C90-270 cross-sectional view of the LED lens that Figure 18 provides for the embodiment of the present invention three; As can be seen from the figure, LED lens 1 have inner chamber 14, and inner chamber 14 is surrounded by the astigmatism unit 11 of LED lens 1 and base 13, and the surface of inner chamber 14 is LED inner lens surfaces 16, comprises the inner surface of astigmatism unit 11 and the inner surface of base 13; Outer surface 15 profile in the C0-180 cross section of astigmatism unit 11 is near hemispherical, the inner surface profile in the C0-180 cross section of astigmatism unit 11 is approximate cone-shape, outer surface 15 profile and the inner surface profile in the C90-270 cross section of astigmatism unit 11 are unsymmetrical, and reflector element 12 is positioned at the C270 side of astigmatism unit 11.
With reference to Figure 19, Figure 20, Figure 21, Figure 22, the top view of the LED lens that Figure 19 provides for the embodiment of the present invention three, the LED lens that Figure 20 provides for the embodiment of the present invention three and the exploded view that LED light source combines, the LED lens that Figure 21 provides for the embodiment of the present invention three and the C0-180 cross-sectional view that LED light source combines, the LED lens that Figure 22 provides for the embodiment of the present invention three and the C90-270 cross-sectional view that LED light source combines; As can be seen from the figure, the front surface profile of the horizontal cross-section of reflector element 12 is linear, and rear surface profile is arc, and the height of reflector element 12 is greater than the height of astigmatism unit 11, and the length of reflector element 12 is greater than the length of astigmatism unit 11; Place LED light source 2 in the inner chamber 14 of LED lens 1, vertically aliging with the summit of described astigmatism unit 11 in the summit of LED light source 2, vertically aligns with the summit of LED inner lens surfaces 16 in the summit of astigmatism unit 11, and its principle is consistent with described in embodiment one; The definition in described C90-270 cross section and C0-180 cross section is consistent with described in embodiment one.
With reference to Figure 25, Figure 26, the light schematic diagram in the C0-180 cross section of the LED lens that Figure 25 (1) proposes for the embodiment of the present invention one, two, three, the light schematic diagram in the C90-270 cross section of the LED lens that Figure 25 (2) proposes for the embodiment of the present invention one, two, three, the light schematic diagram of the horizontal cross-sectional profile of the reflector element rear surface of the LED lens that Figure 26 proposes for the embodiment of the present invention one, two, three; As can be seen from Figure 25 (1), light is by outgoing after the refraction of LED inner lens surfaces 16, astigmatism unit outer surface 15 two layers of surface, light is dispersed to both sides on C0-180 direction, and namely in street lighting application, light can be dispersed along track to both sides and come; As can be seen from Figure 25 (2), light is by outgoing after the refraction of LED inner lens surfaces 16, astigmatism unit outer surface 15 two layers of surface, light is partial to C90 side on C90-270 direction, in addition the rear surface of reflector element 12 by the light reflection of a part of incident direction in C270 side to C90 side, namely, in street lighting application, light can be partial to side, track.As can be seen from Figure 26 (1), reflector element 12 rear surface of the LED lens 1 that the embodiment of the present invention one provides is reflected incident ray, is what disperse from horizontal sectional view reflection ray; As can be seen from Figure 26 (2), reflector element 12 rear surface of the LED lens 1 that the embodiment of the present invention two provides is reflected incident ray, is what disperse from horizontal sectional view reflection ray; As can be seen from Figure 26 (3), reflector element 12 rear surface of the LED lens 1 that the embodiment of the present invention three provides is reflected incident ray, is what assemble from horizontal sectional view reflection ray.Generally, in street lighting application, light can the focusing on road surface of suitable degree, and hot spot evenly can scatter in road surface scope.In addition, the upper surface profile of the astigmatism unit 11 of LED lens 1 is hemispherical or near hemispherical, under this mechanism, the light inciding astigmatism unit 11 outer surface 15 can disposable outgoing, and can not be totally reflected, namely make the disposable outgoing of light and be irradiated to region, road surface, being conducive to improving illuminating light flux utilization rate.
With reference to Figure 27, Figure 28, the LED lens that the distribution curve flux figure of the LED light source that Figure 27 proposes for the embodiment of the present invention one, two, three, Figure 28 propose for the embodiment of the present invention one, two, three and the distribution curve flux figure that LED light source combines; As can be seen from Figure 27, lambert's type luminous intensity distribution form that the LED light source 2 that the embodiment of the present invention one, two, three proposes is beam angle about 120 degree; As can be seen from Figure 28, the LED lens 1 that the embodiment of the present invention one, two, three proposes with the luminous intensity distribution form that LED light source 2 combines are: in C0-C180 plane (on corresponding road travel direction), its distribution curve flux is bat aerofoil profile, specifically beam angle about 150 degree, the angle corresponding to largest light intensity value about ± 65 degree; In C90-C270 plane (on corresponding road width direction), its distribution curve flux is asymmetric, specifically beam angle about 85 degree, and the angle about+40 corresponding to largest light intensity value is spent; So make light more lead illumination value direction, reduce unnecessary ray waste, and effectively can improve street lighting luminous flux utilization rate and the road lighting uniformity.
With reference to Figure 30, Figure 31, Figure 30 (1) is a kind of in prior art structural representation of LED lens, Figure 30 (2) is a kind of in prior art C0-180 cross-sectional view of LED lens, Figure 30 (3) is a kind of in prior art light schematic diagram of C0-180 cross section of LED lens, Figure 31 (1) is the structural representation of LED lens another kind of in prior art, Figure 31 (2) is the C0-180 cross-sectional view of LED lens another kind of in prior art, and Figure 31 (3) is the light schematic diagram in the C0-180 cross section of LED lens another kind of in prior art; With reference to Chinese patent application 201210072443.2 and Chinese patent application 201210574643.8; As can be seen from the figure, in prior art, two or more high point is arranged at the profile top of lens, be similar to the shape at two peaks or multiple peak, the defect of prior art is: on the surface of lens, there is the total reflection of light in surf zone especially between the two peaks, namely a part of light cannot be disposable from lens surface outgoing, but be reflected to lens profile or below, this part light cannot be irradiated to region, road surface, and causing optical energy loss, the reduction of utilization rate of namely throwing light on and light efficiency reduce.
With reference to Figure 32, Figure 25 (1), Figure 32 is the light schematic diagram (with reference to Chinese patent 200920208777.1) in the C0-180 cross section of another LED lens in prior art, the light schematic diagram in the C0-180 cross section of the LED lens that Figure 25 (1) proposes for the embodiment of the present invention one, two, three; As can be seen from Figure 32, the inner surface profile in the C0-180 cross section of the lens proposed in prior art is " M " type, convergence or concentrated is to a certain degree there is in light after inner surface refraction, then carry out dispersing to a certain degree through lens outer surface refraction, realize scattering to both sides at C0-180 direction glazed thread by this mechanism; As can be seen from Figure 25 (1), the inner lens surfaces in the C0-180 cross section of the LED lens that the embodiment of the present invention one, two, three proposes is approximate cone-shape, dispersing to a certain degree is there is in light through inner lens surfaces refraction, then dispersed further after lens outer surface refraction, realize scattering to both sides at C0-180 direction glazed thread.The technology that the present invention proposes unlike the prior art, advantage of the present invention is that be conducive to light fully scatters on C0-180 direction, as in C0-180 plane, distribution curve flux largest light intensity angle reaches more than 65 degree or 65 degree, the road lighting uniformity is higher, especially lamp stand distance can be met comparatively large (as pole height 10 meters, lamp stand spacing more than 40 meters) when illumination uniformity requirement, the near hemispherical structure of lens outer surface is beneficial to the disposable outgoing of light and is irradiated to region, road surface simultaneously, improves illuminating light flux utilization rate.
With reference to Figure 33, Figure 25 (2), Figure 33 is the light schematic diagram (with reference to Chinese patent 200920208777.1) in the C90-270 cross section of another LED lens in prior art, the light schematic diagram in the C90-270 cross section of the LED lens that Figure 25 (2) proposes for the embodiment of the present invention one, two, three; As can be seen from Figure 33, in the C90-270 cross section of the lens that prior art proposes, inner surface, outer surface are unsymmetric structure, but vertically do not align with outer surface profile summit in inner surface profile summit, light can be partial to the side on outer surface summit after the refraction on inside and outside surface, and light namely can be allowed to focus on side, road surface; As can be seen from Figure 25 (2), the inside and outside surface of lens in the C90-270 cross section of the LED lens that the embodiment of the present invention one, two, three proposes is unsymmetric structure, and vertically align with outer surface profile summit in inner surface profile summit, light can be partial to the side relative with outer surface summit after the refraction on inside and outside surface, and light namely can be allowed to focus on side, road surface; The technology that the present invention proposes unlike the prior art, advantage of the present invention is to allow more light focus on certain side, especially the rear surface of reflector element is by the light reflection of a part of incident direction in C270 side to C90 side, and more light is irradiated to region, road surface just can obtain higher road illumination.
Embodiment four:
With reference to the structural representation of the LED lens module that Figure 23, Figure 23 provide for the embodiment of the present invention four; As can be seen from the figure, the LED lens module 3 that the embodiment of the present invention four provides is made up of the LED lens 1 described in four embodiments two, and form integral structure.The luminous intensity distribution form of the LED lens module 3 that the embodiment of the present invention four provides is consistent with Figure 28 Suo Shi.
The further prioritization scheme of embodiment four:
The structural representation of the LED lens module that the further prioritization scheme that reference Figure 24, Figure 24 are the embodiment of the present invention four provides; As can be seen from the figure, as the further optimization of the embodiment of the present invention four, any two LED lens 1 adjacent on C0-180 direction in LED lens module 3 are coupled together, be more particularly that the sidewall of reflector element 12 in LED lens 1 is extended to both sides on C0-180 direction, the reflector element 12 of itself and adjacent LED lens 1 is linked into an integrated entity.
With reference to the distribution curve flux figure that Figure 29, Figure 29 are the further prioritization scheme of the embodiment of the present invention four; As can be seen from the figure, the light intensity value of the negative angle side of C45-225 light distribution surface curve obviously reduces (contrasting with distribution curve flux shown in Figure 28), and illustrate that light is more partial to road side, road illumination can improve further.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. LED lens, comprise: astigmatism unit, reflector element, base, the outer surface profile in the C0-180 cross section of astigmatism unit is hemispherical or near hemispherical, the inner surface profile in the C0-180 cross section of astigmatism unit is taper or approximate cone-shape, outer surface profile and the inner surface profile in the C90-270 cross section of astigmatism unit are unsymmetrical, and reflector element is positioned at the side of astigmatism unit, LED lens have inner chamber, the surface of inner chamber is LED inner lens surfaces, the surface of described inner chamber comprises the inner surface of astigmatism unit and the inner surface of base, LED light source is placed in the inner chamber of described LED lens, vertically align with the summit of described astigmatism unit outer surface in the summit of LED light source, vertically align with LED inner lens surfaces summit in the summit of astigmatism unit outer surface, C90-270 cross section is by the summit of LED light source and the determined axle in summit of described astigmatism unit outer surface, and comprise the upper surface central point of described reflector element, C0-180 cross section is by the summit of LED light source and the determined axle in summit of described astigmatism unit, and perpendicular to C90-270 cross section.
2. LED lens according to claim 1, is characterized in that: the forward and backward surface profile of the horizontal cross-section of described reflector element is linear or convex or arcs of recesses.
3. LED lens according to claim 1, is characterized in that: the height of described reflector element is greater than the height of astigmatism unit, and the length of described reflector element is greater than the length of astigmatism unit.
4. LED lens according to claim 1, is characterized in that: described reflector element is positioned at C90 side or the C270 side of astigmatism unit.
5. a LED lens module, is characterized in that: comprise the arbitrary described LED lens of multiple Claims 1-4.
6. LED lens module according to claim 5, is characterized in that: multiple LED set of lenses integralization structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310374041.2A CN103471033B (en) | 2013-08-23 | 2013-08-23 | LED (light emitting diode) lens and lens module thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310374041.2A CN103471033B (en) | 2013-08-23 | 2013-08-23 | LED (light emitting diode) lens and lens module thereof |
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| CN103471033A CN103471033A (en) | 2013-12-25 |
| CN103471033B true CN103471033B (en) | 2015-06-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2691796T3 (en) | 2014-03-28 | 2018-11-28 | Swarco Futurit Verkehrssignalsysteme Ges.M.B.H. | Luminaires with asymmetric light radiation |
| KR101541826B1 (en) * | 2014-04-28 | 2015-08-12 | 한국광기술원 | Asymmetric type lens and tunner lighting using the same |
| CN104235760A (en) * | 2014-08-28 | 2014-12-24 | 深圳市大族元亨光电股份有限公司 | LED (Light Emitting Diode) lens and lens module |
| CN108266702A (en) * | 2017-01-03 | 2018-07-10 | 山东申士光电有限公司 | A kind of LED lens |
| CN107191891A (en) * | 2017-06-08 | 2017-09-22 | 深圳市美斯特光电技术有限公司 | Optical stereo lens |
| CN109210502A (en) * | 2018-09-19 | 2019-01-15 | 桂林海威科技股份有限公司 | Bar lamp lens are exempted from a kind of glare prevention LED low latitude |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201568888U (en) * | 2009-09-01 | 2010-09-01 | 品能光电(苏州)有限公司 | Led lamp lens |
| CN102840544B (en) * | 2011-06-24 | 2015-01-21 | 海洋王照明科技股份有限公司 | Light distribution lens and LED (Light Emitting Diode) streetlamp |
| US8888338B2 (en) * | 2011-08-31 | 2014-11-18 | National Central University | Reflective street light with wide divergence angle |
| CN202419491U (en) * | 2011-12-13 | 2012-09-05 | 中微光电子(潍坊)有限公司 | LED (light-emitting diode) street lamp reflector |
| CN103196040B (en) * | 2012-01-06 | 2015-03-11 | 扬升照明股份有限公司 | Lens structure, light source device and light source module |
| CN102853289B (en) * | 2012-03-19 | 2014-08-13 | 中微光电子(潍坊)有限公司 | Light-emitting diode (LED) optical system |
| CN103032774B (en) * | 2012-12-26 | 2016-12-07 | 中微光电子(潍坊)有限公司 | A kind of LED light source |
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