CN101639199B - Light-emitting diode lens and lighting device - Google Patents
Light-emitting diode lens and lighting device Download PDFInfo
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- CN101639199B CN101639199B CN2009101094984A CN200910109498A CN101639199B CN 101639199 B CN101639199 B CN 101639199B CN 2009101094984 A CN2009101094984 A CN 2009101094984A CN 200910109498 A CN200910109498 A CN 200910109498A CN 101639199 B CN101639199 B CN 101639199B
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Abstract
The invention relates to a light-emitting diode lens and a lighting device, wherein the shape of the lens is a partially hollow cylindrical body which is cut off along the direction which is parallel to a central axis of the cylindrical body, and a corresponding section of the partially hollow cylindrical body forms an interface of a lens region and a non-lens region of the lens; and the center of a light source is positioned in the center of the section of the partially hollow cylindrical body. The lighting device comprises a lens group formed by a plurality of lenses, wherein the lenses are parallel to the central axis of the cylindrical body, the interfaces between the lens regions and the non-lens regions are overlapped mutually, and the lighting surfaces of the lens are positioned on the same side. The invention adopts the optical lens to directionally change the light intensity distribution, improves the brightness uniformity and the color uniformity of light-emitting diodes and the light source conversion ratio to the largest extent, and reduces the light source glare.
Description
Technical field the present invention relates to a kind of led lens and lighting device.
The background technology large-power light-emitting diodes is the luminous spot light of a kind of orientation; Need to use optical lens to come the directed change curve of light distribution; The design of optical lens can influence the light source conversion ratio of light emitting diode; The design of good optical lens can not only be adjusted the luminosity uniformity and the color uniformity of light emitting diode, can also improve the light source conversion ratio to greatest extent, and reduces the light source dazzle.
Summary of the invention main purpose of the present invention is to provide a kind of led lens and lighting device; Use optical lens to come the directed change light distribution; Improve the luminosity uniformity and the color uniformity of light emitting diode, improve the light source conversion ratio to greatest extent, reduce the light source dazzle.
A kind of led lens disclosed by the invention; Said lens be shaped as the hollow cylinder of part with the planar interception that intersects of the axis that is parallel to cylinder; The plane of intersecting of the said axis that is parallel to cylinder constitutes the lens region of lens and the interface of non-lens region, and the hollow cross sectional shape of cylinder on the interface of lens region and non-lens region of said part is asymmetric; The inner surface of the cylinder that said part is hollow is the incidence surface of lens, and the outer surface of the cylinder that said part is hollow is the exiting surface of lens.
The inner surface of the cylinder that said part is hollow and outer surface are the out-of-alignment faces of cylinder.
Be the physics luminous zone of lens between the interface of said lens region and non-lens region and the lens, the center in the maximum interface cross section that is parallel to said lens region and non-lens region is the light source center of lens in the said physics luminous zone; From said lens exiting surface point to light source center, and and the beeline h of incidence surface between intersecting be the basic thickness of lens, said lens exiting surface point to light source center and and the ultimate range H of incidence surface between intersecting be the lens reference thickness; The proportionate relationship of basic thickness h of said lens and lens reference thickness H is: 7.5h >=H >=h.
Cross the light source center of said lens and be the light source axis perpendicular to the interfacial straight line of said lens region and non-lens region; If the minimum angle b of lens curved surface point tangent line and light source axis is a lens centre tangent line angle on the light source axis, then the angle of lens centre tangent line angle is: 90 ° >=b >=48 °
If lens exiting surface curved edges arbitrarily a bit point to the connecting line of light source center and the angle a of light source axis is the lens curved surface angle, then the angle of lens curvature face angle is: a≤45 °.
The incidence surface of said lens and the exiting surface of lens are minute surface.
The invention also discloses a kind of light emitting diode illuminating apparatus; Comprise a plurality of light emitting diodes that are distributed on the plane and position and said a plurality of light emitting diode one to one and the physics luminous zone coincide with respectively said a plurality of light emitting diodes luminous component like aforementioned any described led lens.
The distribution mode of said a plurality of light emitting diode and lens is: said lens are connected into a plurality of row, said a plurality of row parallel arranged with the mode of the axis coincidence of said cylinder.
A kind of led lens disclosed by the invention; Owing to adopted the specific lens shape; Make light intensity distribution in one direction more adjustable than being more evenly distributed on another direction, this direction light source conversion ratio is higher simultaneously, has improved the luminosity uniformity and the color uniformity of light emitting diode on the whole; Improve the light source conversion ratio, reduce the light source dazzle.A kind of light emitting diode illuminating apparatus disclosed by the invention, to the array combination of multiple spot light emitting diode matrix employing homotype pellicle mirror, product is processed easily, and multiple spot combination cost is low, but the large tracts of land array combination.
Description of drawings
Fig. 1 is a kind of pellicle mirror perspective view of the present invention and profile.
Fig. 2 is the multiple spot array combination structural representation of a kind of homotype pellicle mirror of the present invention.
Fig. 3 is a kind of area source structural representation that adopts the multiple spot array combination of homotype pellicle mirror of the present invention.
Fig. 4 is the surface of intensity distribution of pellicle mirror shown in Figure 1.
Fig. 5 is the basic thickness sketch mapes of lens.
Fig. 6 is a lens reference thickness sketch map.
Fig. 7 is lens curvature face angle and lens centre tangent line angle sketch map.
The specific embodiment is done further explain below in conjunction with the accompanying drawing and the specific embodiment to the present invention.
As shown in Figure 1; Lens arrangement schematic perspective view and profile for one embodiment of the present of invention; Lens be shaped as a part of on hollow cylinder, cutting out with the direction that is parallel to the cylinder axis; The cross section is two rectangles that are parallel to each other in one plane, and this cross section is exactly the interface of the lens region and the non-lens region of lens; The hollow position of lens centre is exactly the physics luminous zone, and light emitting diode is that light source is positioned at the physics luminous zone.The inner surface of the cylinder that this is hollow is the incidence surface of lens, and outer surface is the exiting surface of lens.
Visible like Fig. 1, the equal in length of two rectangles in aforementioned cross section, but width is inconsistent.Because the axis of the cylinder of the inner surface of the cylinder that aforementioned part is hollow does not overlap with outer surface.So on profile as shown in Figure 1, shape is like the semicircle of two decentraction.One side of lens is thicker, and another side is thinner, and light source deflection lens relatively thinner beyond.
The central point of the maximum cross-section of the light source physics light-emitting zone of light emitting diode is called the light source center point, vertically points to lens region from exiting surface and is called the light source axis with the interface of non-lens region and the straight line that is connected with light source center point.Axial plane during the light source axis constitutes during multiple spot list array combination has many middle axial planes during many array combination of multiple spot.
Optical lens is generally with optical grade PMMA/PC material, processes with injection moulding or the mode extruded, and lens incidence surface of the present invention can generate smooth mirror surface, frosting, some face or toothed surface as required.The physical surface that the lens glazed thread comes out from lens is an exiting surface, and the outer surface of the cylinder that part shown in Figure 1 is hollow is the exiting surface of lens, also can generate smooth mirror surface as required, frosting, some face or toothed surface.
The incident light that when the incidence surface of lens is minute surface, sends from the light source center point directly gets in the lens; Invalid reflection can partly take place at incidence surface in incident light when the incidence surface of lens is non-specular surface.In the practical application, the luminous zone of light source led can be hemispherical, flat circle or recessed round illuminating source, and technical scheme of the present invention can be applied to this several kinds of light sources.
When exiting surface was minute surface, the light that penetrates lens did not change direction and gets in the air; When exiting surface is non-specular surface, penetrates the light of lens and can change in the different direction entering air.
When lens incidence surface and light source physics exiting surface evenly closely near be for reduce as far as possible luminous flux in air dielectric apart from conduction loss; It is directly to get in the lens in the path that does not change primary source light that smooth mirror surface requires; In the practical application, can be according to design demand, processing suitably atomizes; Atomizing is handled and has been changed opticpath in advance, but has certain luminous flux loss.
Lens physics incidence surface is a pellicle mirror with the evenly tight approaching lens of light source physics exiting surface biaxial fully on biaxial; Generally extrude generation with precision, its fundamental section figure decision lens model and light distribution, led lens of the present invention is a kind of pellicle mirror; Its incidence surface and the design of light source exiting surface bidimensional orientation method; The advantage of pellicle mirror is that product is processed easily, and multiple spot combination cost is low, but the large tracts of land array combination.
As shown in Figure 2 is many array combination of multiple spot homotype pellicle mirror structural representation; Four pellicle mirrors are embarked on journey with the direction series connection that the cylinder axis is parallel to each other; Two middle pellicle mirror positions in opposite directions, promptly the light source region of these two lens all is partial to the capable center of these lens.The lens that the position of two lens in the outside is adjacent are identical.A plurality of row lens that link can also be represented in the cross section of each lens among Fig. 2, and multiple row is consistent arrangement the on lens region and face that non-lens region interface overlaps again, become the face array of lens like this.
Be light source at present with LED; Its technology maturity has satisfied the requirement in illumination application field basically; To progressively substitute this field light source product of tradition, existing direct-injection type led light source product is because of the directed saturated emitting characteristics of LED self; Be difficult to realize brightness and color uniformity requirement, must carry out the secondary optical lens design.In the conventional use design, be the dazzle of eliminating product and the problem that realizes uniformity requirement, processing need atomize; Cause the luminous flux loss of significant proportion like this, the effective conversion ratio of the light source of actual product is very low, is similarly to overcome above-mentioned factor; Remedy the luminous flux loss, meeting a lot of structures of extra increase and light source cost, the thrifty effect of the energy is also not obvious; Disclosed scheme can reduce system cost by bottom line, satisfies market-oriented requirement.
Like Fig. 3 is a kind of area source structural representation that adopts the multiple spot array combination of homotype pellicle mirror of the present invention, also can select the incompatible realization of special-shaped pellicle mirror array group as required, promptly in lens arra, comprises the different lens of structure.On the multiple spot light emitting diode matrix, use homotype pellicle mirror array combination structure as shown in Figure 2, form planar light source.
Be illustrated in figure 4 as the surface of intensity distribution of pellicle mirror shown in Figure 1, visible by figure, on the direction of the column axis of pellicle mirror, light distribution symmetrically; On direction perpendicular to the column axis of pellicle mirror, the bigger side of light distribution deflection lens thickness.
It is thus clear that light source single directional light behind lens distributes by force and realizes evenly adjustablely, can realize evenly adjustablely during many array combination on the whole, the system source conversion ratio also increases.
Be illustrated in figure 5 as the basic thickness sketch map of lens, the beeline h between lens exiting surface sensing light source center and incidence surface intersect is the basic thickness of lens, and its position is on the light source center line or on the exiting surface edge line.The basic thickness of lens is a basic design data, and when lens were the lens axis around the light source axis, its basic thickness position was on axis.
As shown be lens reference thickness sketch map, the lens exiting surface point to light source center and and the ultimate range H of incidence surface between intersecting be the lens reference thickness, its position at the light source center line with exterior domain.The lens reference thickness has certain proportion relation with basic thickness, and curved surface angle and the certain scope of central tangent angle initialization, purpose are to make all light all with the unirefringence bright dipping; The light distribution angle control that reflects away is useful direction, otherwise occurs ineffective distribution easily, can't utilize and cause system's luminous flux loss.
Fig. 7 is lens curvature face angle and lens centre tangent line angle sketch map, lens bright dipping curved edges arbitrarily a bit point to the connecting line of light source center and the angle a of light source axis is the lens curved surface angle.The minimum angle b of lens curved surface point tangent line and light source axis is a lens centre tangent line angle on the light source axis.
In one embodiment of the invention, the proportionate relationship of the basic thickness h of secondary lens and lens reference thickness H is following:
7.5h≥H≥h
Lens curvature face angle: a≤45 °
Lens centre tangent line angle: 90 ° >=b >=48 °
Lens exiting surface of the present invention is to be combined by identical curved surface or different curve, and different curve is counted n >=2; Because lens design itself has changed the opticpath that gets into lens face; So requiring the lens exiting surface is smooth mirror surface; Because under the situation of the requirement that reaches the design light distribution; Mirror process is best, is difficult to reach the distribution requirement sometimes or for further reduction dazzle influences, also can carries out the whole or local processing that atomizes.
It is to change the lens light thread path that atomizing is handled, and the luminous flux loss is less relatively.
Light emitting diode secondary lens disclosed by the invention, light source conversion ratio can reach more than 85%, and product brightness uniformity and color uniformity can reach more than 80%, usage quantity that can MIN reduction light source, thus save power consumption to greatest extent.Because lens are to extrude with precision to process, so the product array specifications design is flexible, product is realized easily.
Carried out the light intensity uniformity adjustment in this programme design, reduced the dazzle influence, therefore do not needed extra supplementary structure material processed relative influence, lens itself both can be brought into play lens function, the outward appearance protector effect of can holding concurrently again; Because of the high efficiency conversion, the cost that dispels the heat is accordingly also followed reduction simultaneously, and the product structure cost is minimum.
Claims (4)
1. led lens; It is characterized in that; Being shaped as of said lens with the hollow cylinder of the part axis that is parallel to cylinder and planar interception that intersect with said cylinder; And should constitute the lens region of lens and the interface of non-lens region with the plane that said cylinder intersects, the hollow cross sectional shape of cylinder on the interface of lens region and non-lens region of said part is asymmetric; The inner surface of the cylinder that said part is hollow is the incidence surface of lens, and the outer surface of the cylinder that said part is hollow is the exiting surface of lens; The inner surface of the cylinder that said part is hollow and outer surface are the out-of-alignment faces of cylinder;
Be the physics luminous zone of lens between the interface of said lens region and non-lens region and the lens, the center in the maximum interface cross section that is parallel to said lens region and non-lens region is the light source center of lens in the said physics luminous zone; From said lens exiting surface point to light source center, and and the beeline h of incidence surface between intersecting be the basic thickness of lens, said lens exiting surface point to light source center and and the ultimate range H of incidence surface between intersecting be the lens reference thickness; The proportionate relationship of basic thickness h of said lens and lens reference thickness H is: 7.5h >=H＞h;
Cross the light source center of said lens and be the light source axis perpendicular to the interfacial straight line of said lens region and non-lens region; If the minimum angle b of lens curved surface point tangent line and light source axis is a lens centre tangent line angle on the light source axis, then the angle of lens centre tangent line angle is: 90 ° >=b >=48 °;
If lens exiting surface curved edges arbitrarily a bit point to the connecting line of light source center and the angle a of light source axis is the lens curved surface angle, then the angle of lens curved surface angle is: a≤45 °.
2. like power 1 described led lens, it is characterized in that the incidence surface of said lens and the exiting surface of lens are minute surface.
3. light emitting diode illuminating apparatus; It is characterized in that; Comprise a plurality of light emitting diodes that are distributed on the plane and position and said a plurality of light emitting diode one to one and the physics luminous zone coincide with respectively said a plurality of light emitting diodes luminous component like any described led lens in the claim 1 to 2.
4. like power 3 described light emitting diode illuminating apparatus, it is characterized in that the distribution mode of said a plurality of light emitting diodes and lens is: said lens are connected into a plurality of row, said a plurality of row parallel arranged with the mode of the axis coincidence of said cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101094984A CN101639199B (en) | 2009-08-24 | 2009-08-24 | Light-emitting diode lens and lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101094984A CN101639199B (en) | 2009-08-24 | 2009-08-24 | Light-emitting diode lens and lighting device |
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| Publication Number | Publication Date |
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| CN101639199A CN101639199A (en) | 2010-02-03 |
| CN101639199B true CN101639199B (en) | 2012-06-06 |
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| CN2009101094984A Expired - Fee Related CN101639199B (en) | 2009-08-24 | 2009-08-24 | Light-emitting diode lens and lighting device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574502B (en) * | 2012-08-02 | 2017-10-24 | 海洋王照明科技股份有限公司 | Lens and the aid-to-navigation light using the lens |
| CN104949066B (en) * | 2015-06-30 | 2018-11-23 | 上海睿铄光电科技有限公司 | Runway high brightness uniformity pavement high illumination uniformity LED street lamp lens |
| CN106523957A (en) * | 2016-12-27 | 2017-03-22 | 深圳市大族元亨光电股份有限公司 | Lens for controlling brightness and visual angle of 3-in-1 patch LED lamp |
| CN106838735A (en) * | 2017-01-10 | 2017-06-13 | 江苏宜美照明科技股份有限公司 | A kind of LED spotlight |
| CN107562059A (en) * | 2017-09-20 | 2018-01-09 | 浙江映美智能装备科技有限公司 | A kind of intelligent carriage tracking system with Quick Response Code site location information |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093067A (en) * | 2007-06-27 | 2007-12-26 | 金载乙 | Lens for LED and led eisplay apparatus using same |
| CN201281290Y (en) * | 2008-10-07 | 2009-07-29 | 玉晶光电股份有限公司 | Both-side illuminating optical lens |
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2009
- 2009-08-24 CN CN2009101094984A patent/CN101639199B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093067A (en) * | 2007-06-27 | 2007-12-26 | 金载乙 | Lens for LED and led eisplay apparatus using same |
| CN201281290Y (en) * | 2008-10-07 | 2009-07-29 | 玉晶光电股份有限公司 | Both-side illuminating optical lens |
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| CN101639199A (en) | 2010-02-03 |
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Owner name: DONGGUAN XUANLANG INDUSTRIAL CO., LTD. Free format text: FORMER OWNER: SHENZHEN GEET OPTOELECTRONIC CO., LTD. Effective date: 20120426 |
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Free format text: CORRECT: ADDRESS; FROM: 518110 SHENZHEN, GUANGDONG PROVINCE TO: 523000 DONGGUAN, GUANGDONG PROVINCE |
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Effective date of registration: 20120426 Address after: Two building, B building, No. 7 Julong Road, Tangxia, Dongguan, Shigu, Guangdong 523000, China Patentee after: Dongguan Xuan Lang Industrial Company Limited Address before: Baoan District Guanlan town Shenzhen city Guangdong province 518110 Liguang Shinco Industrial Park Patentee before: Shenzhen GEET Optoelectronic Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20160824 |