CN201047878Y - Spreading lens for LED light source - Google Patents
Spreading lens for LED light source Download PDFInfo
- Publication number
- CN201047878Y CN201047878Y CNU2007201182888U CN200720118288U CN201047878Y CN 201047878 Y CN201047878 Y CN 201047878Y CN U2007201182888 U CNU2007201182888 U CN U2007201182888U CN 200720118288 U CN200720118288 U CN 200720118288U CN 201047878 Y CN201047878 Y CN 201047878Y
- Authority
- CN
- China
- Prior art keywords
- light
- light source
- house
- divergent lens
- emitting diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000005304 optical glass Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 239000003086 colorant Substances 0.000 abstract description 3
- 230000004907 flux Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model aims at providing a radiation lens used for a light-emitting diode lamp-house, through which the light emitting from the light-emitting diode lamp-house exhales relative to a plain shaft and forms an ideal light-distributing effect. The purpose of optimizing the light distribution of the light-emitting diode lamp-house can be reached by adding the other radiation lens outside the light-emitting diode lamp-house. The body of the radiation lens is composed of light-penetrating material, wherein a cavity and a U-shaped reflecting surface are provided in the body. To increase the reflecting effect, a reflecting film layer can also be added on the reflecting surface. The cavity collects the light emitting from the light-emitting diode lamp-house while the reflecting surface and the reflecting layer reflect the light emitting from the lamp-house and closing to the shaft direction to all directions. The light emitting from the light-emitting diode lamp-house through the radiation lens can form a vast-angle light distributing effect. The utility model is also to provide a lamp-house using the radiation lens, wherein, the light-emitting diode lamp-house is positioned inside the cavity of the radiation lens, and can choose different colors, power, luminous flux, light intensity and types of sealing based on the practical demand.
Description
Technical field
The utility model relates to the optical texture of optical semiconductor emitting diode (LED) light source; Be specifically related to be used for the optical lens of led light source, with and uses thereof.
Technical background
The light emitting diode of visible light (LED) originates from the nineties in 20th century, is the expansion of ultra-high brightness LED application.Along with the appearance of ultra-bright LED, its efficient is more and more higher, and price descends gradually.Simultaneously LED have life-span length, vibration resistance, luminescence efficiency height, noiseless, be not afraid of characteristics such as low temperature, no mercury pollution problem and cost performance height.The super brightness power-type LED has been expanded LED greatly and has been shown and the lighting source Application for Field at various signals.
Though led light source has above-mentioned multiple advantage, it is different fully with the form of the original conventional light source that adopts of various kinds of equipment, therefore can't directly substitute these light sources, must be the led light source design proposal specially.Because LED is a pointolite, radiation pattern is conical, has disadvantage in actual applications: be difficult to obtain a uniform continuous light source.
The user is in order to obtain the illumination effect of uniform similar conventional light source with LED at present, have to adopt comparatively complicated optics, physical construction, when for example designing, make LED not only in planar alignment, but on three dimensions, arrange, form the luminophor on a similar sphere or the face of cylinder, obtain and the similar light distribution of conventional light source effect, to adapt to original light fixture.Such design proposal is at the complicacy and the cost that have all increased product aspect optics, physical construction and the circuit.
The utility model content
The purpose of this utility model provides a kind of divergent lens that is used for led light source, and the light that led light source is sent is dispersed with respect to optical axis, forms comparatively ideal light distribution effect.
The utility model is by installing a divergent lens again additional outside led light source, reaching the photodistributed purpose of optimizing led light source.This divergent lens constitutes matrix by light transmissive material, has cavity and U-shaped reflecting surface therein, for increasing reflecting effect, also can add the last layer reflectance coating on the reflecting surface; Described cavity is collected the light that led light source sent, and the approaching axial light that reflecting surface and reflection horizon are sent light source reflects towards periphery.The light that led light source sends has just formed the light distribution effect of an extensive angle by described divergent lens.
Another purpose of the utility model provides a kind of light source that uses above-mentioned divergent lens, and wherein led light source is arranged in the cavity of divergent lens, and led light source can be selected different color, power, luminous flux, light intensity and encapsulated type etc. according to application need.
The principle of work of divergent lens of the present utility model mainly is to utilize the refraction and the reflection of light, makes light form comparatively ideal distribution.Divergent lens can select for use various optical materials to make, as optical glass, and optical plastic PMMA, PC etc.The geomery of divergent lens does not have strict restriction, according to the user needs of this light source is designed.Will there be a cavity of collecting the light that LED sends in the place that divergent lens combines with led light source.Divergent lens has special optical design, and the light near optical axis that reflecting surface and reflectance coating send light source reflects towards periphery, thereby realizes that the diverging light that needs distributes.
Reflecting surface is generally curved surface, and its section shape can be para-curve, or other secondaries or high order curve more, also can be made of several sections tangent circular arcs; And rotate around optical axis by this curve and to form curved surface.The formation of this structure be fully concrete size according to lens according to the optics ultimate principle, the first principles computations that promptly reflects, reflects is made, and checks by the distribution and the homogeneity of measuring light then.The shape of this curve does not need strict restriction, and this it may occur to persons skilled in the art that, perhaps calculates by the basic optical principle; And net result can be verified by measuring.For increasing reflecting effect, also can add the last layer reflectance coating on the reflecting surface.
In the preferred embodiment of the present utility model, referring to Fig. 1, being shaped as of divergent lens 1 is one cylindrical; There is a cavity 11 of collecting the light that LED sends in the place that the lens bottom combines with led light source.Lens top, the inner reflecting surface 12 that forms on the face of cylinder, the section shape of this reflecting surface is made of three sections tangent circular arcs.Plating one deck specular reflection film 13 on the reflecting surface, the reflectivity of reflectance coating is greater than 85%.The making of lens is fairly simple, uses distinct methods according to unlike material.For example, during the optical glass material, can use photoetching corrosion, Laser Processing or mould heat pressure etc.; Optical plastic generally adopts mould heat pressure.Reflectance coating forms with the method for vacuum coating, is generally aluminium film or silverskin.Led light source 2 is arranged in the cavity of lens bottom, and the light of being launched enters lens by cavity, by refraction, reflection, forms required light and distributes.
By adopting divergent lens, can obtain the light distribution of radiation pattern of more uniform extensive angle, follow-up secondary optics design is simplified greatly, more help combining of light source and general light fixture equipment.
Modes such as led light source can adopt that bonding, screw are fixed combine with lens, form the light source device of an integral body.
Led light source can be the also light source of multicore sheet of single-chip, can be that monochromatic chip also can be with the synthetic chip unit of a plurality of monochromatic chipsets, so that obtain the light of the color that requires.
The utility model is installed divergent lens on led light source, make led light source form comparatively ideal light distribution effect.Its advantage is:
(1) this light source is compared with conventional light source, has the various advantages of led light source.
(2) by suitable optical design and structural design, can with hardware compatibility, can directly substitute original light source, and not need, as long as or make very little change and just can use equipment redesign.
(3) simple in structure, low cost is implemented easily.
From the above, the utlity model has wide application prospect.
Description of drawings
Fig. 1 be the utility model divergent lens and the principle diagrammatic cross-section;
Fig. 2 is a section of structure of the present utility model;
Fig. 3 is a light radiation pattern of not using the preceding led light source of divergent lens;
Fig. 4 is the light radiation pattern after led light source has been installed divergent lens of the present utility model.
In the accompanying drawing, the 1st, divergent lens, wherein 11 is cavitys of lens, the 12nd, the reflecting surface of lens, the 13rd, reflectance coating; The 2nd, led light source; The 3rd, optical axis; The 4th, the light that led light source sends.
Embodiment
Be described in further detail the present invention with reference to the accompanying drawings in conjunction with the embodiments.
See also Fig. 2, a led light source 2 is contained in the bottom of divergent lens 1; Make the luminous point of led light source be positioned at the cavity 11 of divergent lens; The section shape of the reflecting surface 12 of divergent lens is one section para-curve; Method with vacuum coating on the reflecting surface forms one deck specular reflection film 13, is the aluminium film.
In this example, the material of divergent lens is optical plastic PMMA, the injection moulding manufacturing; The profile of divergent lens is cylindrical.The led light source of selecting for use is single-chip, sends white light by fluorescent powder.
In this example, the bottom of led light source and divergent lens is fixed with bonding method.
Before not using divergent lens, the light radiation pattern of led light source as shown in Figure 3, near the light intensity maximum center section optical axis, more little away from optical axis intensity more;
Led light source has been installed the light radiation pattern behind the divergent lens as shown in Figure 4, and light intensity is weakened near the middle optical axis, and strengthens away from the direction light intensity of optical axis, and on whole space, the distribution of light is than original even.
Substantially according to the scheme identical with embodiment 1, different is, and led light source 2 selects for use is single-chip, send red, green or blue monochromatic light.
Substantially according to the structure identical with embodiment 1, different is, and led light source 2 selects for use is the encapsulation of multicore sheet, and promptly led light source is that a plurality of led chips with a certain color in red (R), green (G), the blue colors such as (B) are combined in the encapsulation or a plurality of led chips of different colours such as red, blue, green are combined in the encapsulation.
Substantially according to the structure identical with embodiment 1, the section shape of different the is reflecting surface 12 of divergent lens is made up of three sections tangent circular arcs; Reflectance coating 13 is a silverskin.
Embodiment 5
Substantially according to the structure identical with embodiment 1, different is with cavity 11 fillings of light transmission rate height, the refractive index glue close with the material of divergent lens with divergent lens, and makes adhesive curing.Wherein, described glue can be purchased from market.
More than be described in detail structure of the present utility model, obviously, those skilled in the art can do many improvement and conversion, and for example variation of the structure of divergent lens and size and material etc. all falls into spiritual scope of the present utility model.
Claims (7)
1. a divergent lens that is used for led light source is characterized in that lens have cavity and U-shaped reflecting surface.
2. divergent lens according to claim 1 is characterized in that plating one deck reflectance coating on described reflecting surface.
3. divergent lens according to claim 1 is characterized in that selecting for use optical glass, and the optical material of one of optical plastic is made.
4. divergent lens according to claim 1 is characterized in that described reflecting surface is a curved surface, and its section shape can be para-curve, or other secondaries or high order curve more, or several sections tangent circular arcs constitute; And rotate around optical axis by this curve and to form curved surface.
5. divergent lens according to claim 1 is characterized in that at reflectance coating be aluminium film or silverskin.
6. divergent lens according to claim 1 is characterized in that placing led light source in the cavity of divergent lens.
7. divergent lens according to claim 6 is characterized in that having filled transparent glue in the cavity of described divergent lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201182888U CN201047878Y (en) | 2007-02-06 | 2007-02-06 | Spreading lens for LED light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201182888U CN201047878Y (en) | 2007-02-06 | 2007-02-06 | Spreading lens for LED light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201047878Y true CN201047878Y (en) | 2008-04-16 |
Family
ID=39300467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201182888U Expired - Fee Related CN201047878Y (en) | 2007-02-06 | 2007-02-06 | Spreading lens for LED light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201047878Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072456A (en) * | 2010-10-19 | 2011-05-25 | 王子能 | LED spherical light distribution lens |
| WO2011120410A1 (en) * | 2010-04-02 | 2011-10-06 | 亿广科技(上海)有限公司 | Led lamp |
| TWI479107B (en) * | 2012-11-20 | 2015-04-01 | E Pin Optical Industry Co Ltd | Led light distributing lens and light source apparatus using the same |
-
2007
- 2007-02-06 CN CNU2007201182888U patent/CN201047878Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011120410A1 (en) * | 2010-04-02 | 2011-10-06 | 亿广科技(上海)有限公司 | Led lamp |
| CN102072456A (en) * | 2010-10-19 | 2011-05-25 | 王子能 | LED spherical light distribution lens |
| CN102072456B (en) * | 2010-10-19 | 2013-10-02 | 王子能 | LED spherical light distribution lens |
| TWI479107B (en) * | 2012-11-20 | 2015-04-01 | E Pin Optical Industry Co Ltd | Led light distributing lens and light source apparatus using the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGZHI HI-TECH. INDUSTRY INVESTMENT CO., LTD. Free format text: FORMER OWNER: SHENZHEN ZHONGDIAN MIAOHAO SOLID LIGHT SOURCE CO., LTD. Effective date: 20110909 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518102 SHENZHEN, GUANGDONG PROVINCE TO: 046000 CHANGZHI, SHAANXI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110909 Address after: 046000 No. 12 Jiefang West Road, Shanxi, Changzhi Patentee after: CHANGZHI HI-TECH INDUSTRIAL INVESTMENT CO., LTD. Address before: 518102 R & D center, 1, science and Technology Innovation Park, Baoan the Peach Garden, Shenzhen, Baoan District, Guangdong Patentee before: Shenzhen Zhongdian Miaohao Solid Light Source Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080416 Termination date: 20160206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |