CN102095163B - LED shaping integrated lens - Google Patents
LED shaping integrated lens Download PDFInfo
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- CN102095163B CN102095163B CN2011100374148A CN201110037414A CN102095163B CN 102095163 B CN102095163 B CN 102095163B CN 2011100374148 A CN2011100374148 A CN 2011100374148A CN 201110037414 A CN201110037414 A CN 201110037414A CN 102095163 B CN102095163 B CN 102095163B
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Abstract
The invention relates to an LED shaping integrated lens. The LED shaping integrated lens is a shaping element integrating primary light distribution and secondary light distribution into a whole; one surface is a refracting surface with focal power and utilized to collect and converge the light of a chip, and the other surface is a diffractive surface and is used for shaping the light output by the chip on the basis of a principle that far-field light spots are redistributed by modulating the phases of light beams so as to obtain output light beams which meet the requirements for usage. The invention has the advantages of simple system composition, level surface, high integration degree, small size, light weight, accurate positioning, convenience for use without secondary optical assembly, capability of obtaining multiple specific functions, and effective prevention of the influence of dust and aerial fog on the property of the LED chip because of good sealing property, and the like.
Description
Technical field
The invention belongs to the LED field, relate to the integrated lens of a kind of LED shaping.
Background technology
(Light Emitting Diode is a kind of semiconductor solid luminescence device LED) to light emitting diode, has unique advantages such as volume is little, life-span length, low energy consumption.Under the situation of equal brightness of illumination, the LED lamp on average economizes on electricity 40% to more than 50% than ordinary lamps, and the later period maintenance maintenance cost is extremely low, produces any maintenance cost hardly in 3 to 5 years after installing and using; Secondly LED lamp does not contain harmful substance and pernicious gases such as the contained mercury of the common energy-saving lamp generally sold on the current market, lead; Three are to use the life-span long, can reach 50,000 to 100,000 hours average life, are 3 to 5 times of ordinary lamp and lantern.From long term growth, the LED technology has become the important technology of energy-saving and emission-reduction, is the new important growth point of economic development.
Led chip (chip) is luminous by theory to be 360 degree, and in actual use, led support fix and encapsulation being positioned over chip, and the maximum lighting angle of chip is 180 to spend.Technology commonly used is effectively to collect all light of chip by lens, obtains the rising angle as 160 degree, 140 degree, 120 degree, 90 degree (different needs).No. one time lens are many with PMMA or silica gel material, and directly encapsulation (or bonding) becomes as a whole with LED on the led chip support.Yet the wide-angle light that lens come out can not satisfy practical demand, adopt again usually secondary lens to the wide-angle light (being generally the 90-120 degree) of led chip again optically focused become 5 degree to want the angle that obtains arbitrarily to 80 degree.Secondary lens and LED are two independently objects, but they are inseparable when using.Because structure and packaged type, the light characteristic of the different size led chip of each big LED manufacturer can be distinguished to some extent, not only will carry out sunykatuib analysis to its optical property when selecting secondary lens for use, also need to consider the assembly problem of secondary lens and led chip simultaneously.Must carry out the specific aim design, make and assemble and to obtain good performance.
Summary of the invention
The technical problem to be solved in the present invention is: overcome to have now and adopt the repeatedly shortcoming of luminous intensity distribution technology, adopt the integrated lens of a kind of LED shaping, realize the shaping of led chip, reach instructions for use.
The technical solution adopted for the present invention to solve the technical problems is: according to chip characteristics and instructions for use, design and produce integrated shaping lens, one side utilizes integrated lens that the light of chip is converged for having the plane of refraction of focal power; One side plays the effect that LED luminescence chip output light is carried out shaping for diffraction surfaces in addition.A kind ofly collect once light-distribution and secondary light-distribution is the shaping element of one, one side is for having the plane of refraction of focal power, utilize its light to the LED luminescence chip to collect and converge, one side is diffraction surfaces in addition, the principle that makes far-field spot redistribution based on the modulation to light beam position phase, chip output light is carried out shaping, obtain to satisfy the output beam of user demand.The method for designing that integrated lens adopt micro-optics diffraction element and refracting element to merge mutually reaches intensity distributions by the light behind the plane of refraction mutually by diffraction surfaces bits of modulation again.In process, utilize the method for binary micro optical element microfabrication (photoetching-transmission-alignment-transmission) to make diffraction surfaces, utilize the processing plane of refraction of conventional grinding technique, and need between plane of refraction and the diffraction surfaces to aim at.
Described integrated lens, material are PMMA or silica gel or PDMS or PC or glass.
Described integrated lens directly are encapsulated on the led chip support by method bonding or that mechanical parts is fixing, do not need the secondary optics luminous intensity distribution.
Described integrated lens form distribution circular or rectangle or ring-type or pattern or requirement after the scioptics shaping.
Described integrated lens, the angle of emergence of light is that 5 degree are to 120 degree after the scioptics shaping.
Described integrated lens are simple lens, or lens array, array number from 1 to 1000, and lens sizes is from 1mm～500mm.
Described integrated lens use in the time of can singlely being assemblied on the single-chip for low-power, or are combined into module, in conjunction with mechanical luminous intensity distribution, are assemblied in and satisfy high-power instructions for use on the chip array.
Described integrated lens can be used for LED indoor lamp or LED street lamp or LED car light or LED display or LED-backlit source.
Described integrated lens diffraction surfaces design based on diffraction principle, utilizes structure to the modulating action of light beam position phase, makes the principle of far-field spot redistribution design; The plane of refraction design based on refraction principle, utilizes lens face type converging, dispersing, the principle design of the redistribution of realization light energy light.
Described integrated lens diffraction surfaces can quantize or the quantification of four steps or the quantification of eight steps for two steps according to the difference of instructions for use, efficient.
The advantage that the present invention compared with prior art has is:
(1) it is little, in light weight that the integrated lens combination of LED shaping of the present invention constitutes simple, surfacing, integrated level height, volume;
(2) the integrated lens of LED shaping of the present invention do not need secondary optics assembling, accurate positioning, easy to use;
(3) utilize the integrated lens of LED shaping of the present invention can obtain multiple specific function.
(4) the integrated lens of LED shaping of the present invention, favorable sealing property effectively avoids dust, aerosol to the led chip Effect on Performance.
Description of drawings
Fig. 1 is the integrated lens schematic diagram of LED shaping of the present invention;
Fig. 2 is the integrated lens principle block diagram of LED shaping of the present invention;
Fig. 3 is the schematic diagram of the circular output facula of the embodiment of the invention 1 acquisition;
Fig. 4 is 5 * 6 module schematic diagrames that the embodiment of the invention 2 adopts;
Fig. 5 is the schematic diagram of the rectangle output facula of the embodiment of the invention 2 acquisitions;
Fig. 6 is the schematic diagram of the annular output facula of the embodiment of the invention 3 acquisitions;
Fig. 7 is the schematic diagram of many rings output facula of the embodiment of the invention 3 acquisitions.
The specific embodiment
Introduce the present invention in detail below in conjunction with the drawings and the specific embodiments.But following embodiment only limits to explain the present invention, and protection scope of the present invention should comprise the full content of claim, and namely can realize the full content of claim of the present invention by following examples those skilled in the art.
The integrated lens of a kind of LED shaping according to chip characteristics and instructions for use, design and produce integrated shaping lens, and one side utilizes its light to chip to converge for having the plane of refraction of focal power; One side plays the effect that chip output light is carried out shaping for diffraction surfaces in addition.
The implementation procedure of integrated lens is as follows: at first, and clear and definite instructions for use, definite type of using the LED luminescence chip, the i.e. input of clear and definite optical system, output parameter.Secondly, carry out the parameter that optical design obtains the integrated lens of LED shaping, as focal length, the bore of lens material refractive index, plane of refraction, the diffraction efficiency of diffraction surfaces, the number of steps that quantizes, processing live width etc.By simulation of optical systems software, obtain the system emulation result, see whether meet the demands, otherwise the parameter of the integrated lens of suboptimization again, up to satisfying input, output requirement.Then, utilize the micro-optics manufacturing process to develop integrated lens, and carry out assembling, the test of single-chip.The group battle array to satisfy the requirement that high power uses, is about to single-chip and considers as a whole with integrated lens if desired, by mechanical luminous intensity distribution, obtains the module effect.
Embodiment 1
The integrated shaping lens of a kind of low-power single-chip.The instructions for use of LED lamp: single LEDs auto lamp, power 1～2W, exit facet are circular, and angle is 90 °.Present single led chip can satisfy power requirement, thereby adopts single-chip, and as Oslan 1.5W chip, emission angle is 160 °, lambert's illuminator.Designing and producing integrated shaping lens is simple lens, and aperture of lens is 500mm, and material is PMMA, and lower surface is plane of refraction, and focal length is 2mm, and upper surface is diffraction surfaces, owing to require efficient not high, adopts two steps to quantize, and efficient is about 80%.The shaping lens schematic diagram uses silicon rubber directly it to be bonded in the led chip substrate as shown in Figure 1.By ZMAX simulation, the shaping effect schematic diagram as shown in Figure 3, by exporting circular light spot after the shaping lens, emission angle is 89 °.The process of integrated lens is to process plane of refraction earlier, be engraved in the another side processing diffraction surfaces of substrate then with double-sided exposure machine alignment light, utilize the method for photoetching figure to be delivered to the photoetching resist surface of substrate, by plasma etching technology litho pattern is delivered in the substrate then, forms required integrated lens.
Embodiment 2
The integrated shaping lens of a kind of high-capacity LED street lamp.Instructions for use: power is greater than 150W, throws light in the roadside, the high 10m of lamp, and exit facet rectangle, area are 10m * 25m.Adopt the chip of 150 1W, form 5 modules by 6 * 5, by calculating as can be known, the angle of departure of the direction of having a lot of social connections is 45 °, is 51 ° along the angle of departure of road direction.Design and produce 6 * 5 the integrated shaping lens array of 5 modules, aperture of lens 10mm, the diffraction efficiency height of required diffraction element is so adopt eight steps to quantize material selection PC.Earlier the processing plane of refraction processes two step diffraction surfaces in the reverse side location of substrate then, forms four step diffraction surfaces by alignment, forms eight step diffraction surfaces by alignment again.5 * 6 modules are arranged schematic diagram as shown in Figure 4, are fixed on the pcb board that is welded with chip array by mechanical screw.Obtain output facula effect schematic diagram behind the scioptics as shown in Figure 5, area is about 10m * 25m.
Embodiment 3
The integrated shaping lens of a kind of LED display lamp.Instructions for use: the output light angle of emergence is 5 °, and light spot shape is annular.Design and produce integrated shaping lens, integrated lens diffraction surfaces adopts four steps to quantize, difference according to instructions for use, design different diffraction surfaces shapes, and make by the method for microfabrication, aperture of lens 50mm obtains the monocycle shaping effect as shown in Figure 6, encircles shaping output as shown in Figure 7 more.
Claims (7)
1. integrated lens preparation method of LED shaping, it is characterized in that: described lens are a kind ofly to collect once light-distribution and secondary light-distribution is the shaping element of one, its one side is the plane of refraction that has focal power, utilize integrated lens that the light of LED luminescence chip is collected and converged, one side is diffraction surfaces in addition, the principle that makes far-field spot redistribution based on the modulation to light beam position phase, LED luminescence chip output light is carried out shaping, after the shaping angle of emergence of light be 5 degree to 120 degree, obtain to satisfy the output beam of user demand; Described integrated lens directly are encapsulated on the led chip support by method bonding or that mechanical parts is fixing, reach required instructions for use, are implemented as follows:
At first, clear and definite instructions for use, definite type of using the LED luminescence chip, the i.e. input of clear and definite optical system, output parameter; Secondly, carry out the parameter of the integrated lens of optical design acquisition LED shaping, the focal length, the bore that comprise lens material refractive index, plane of refraction, the diffraction efficiency of diffraction surfaces, the number of steps that quantizes, processing live width, by simulation of optical systems software, obtain the system emulation result, see whether meet the demands, otherwise the parameter of the integrated lens of suboptimization is imported, exports requirement up to satisfying again; Recycling micro-optics manufacturing process is developed integrated lens, and carries out assembling, the test of single-chip, if desired the group battle array, to satisfy the requirement that high power uses, be about to single-chip and consider as a whole with integrated lens, by mechanical luminous intensity distribution, obtain the module effect;
Described integrated lens diffraction surfaces design based on diffraction principle, utilizes structure to the modulating action of light beam position phase, makes the principle of far-field spot redistribution design; The plane of refraction design based on refraction principle, utilizes lens face type converging, dispersing, the principle design of the redistribution of realization light energy light.
2. the integrated lens preparation method of a kind of LED shaping according to claim 1, it is characterized in that: described integrated lens material is PMMA or silica gel or PDMS or PC or glass.
3. the integrated lens preparation method of a kind of LED shaping according to claim 1 is characterized in that: form circle or rectangle after the scioptics shaping.
4. the integrated lens preparation method of a kind of LED shaping according to claim 1, it is characterized in that: described integrated lens are simple lens, or lens array, array number from 1 to 1000, lens sizes is from 1mm～500mm.
5. the integrated lens preparation method of a kind of LED shaping according to claim 1, it is characterized in that: described integrated lens use in the time of can singlely being assemblied on the single-chip for low-power, or be combined into module, in conjunction with mechanical luminous intensity distribution, be assemblied in and satisfy high-power instructions for use on the chip array.
6. the integrated lens preparation method of a kind of LED shaping according to claim 1, it is characterized in that: described integrated lens can be used for LED indoor lamp or LED street lamp or LED car light or LED display or LED-backlit source.
7. the integrated lens preparation method of a kind of LED shaping according to claim 1 is characterized in that: described integrated lens diffraction surfaces can be that two steps quantize or four steps quantize or eight steps quantize according to the difference of instructions for use, efficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100374148A CN102095163B (en) | 2011-02-14 | 2011-02-14 | LED shaping integrated lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100374148A CN102095163B (en) | 2011-02-14 | 2011-02-14 | LED shaping integrated lens |
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| CN102095163A CN102095163A (en) | 2011-06-15 |
| CN102095163B true CN102095163B (en) | 2013-08-21 |
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| CN2011100374148A Expired - Fee Related CN102095163B (en) | 2011-02-14 | 2011-02-14 | LED shaping integrated lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5928411B2 (en) * | 2013-06-04 | 2016-06-01 | 株式会社デンソー | Vehicle display device |
| CN104948948B (en) * | 2015-05-12 | 2017-06-16 | 中国计量学院 | Adjustable color LED illumination lamp is excited using double blue chips of diffraction element |
| CN111273452B (en) * | 2020-03-20 | 2023-02-10 | 珠海迈时光电科技有限公司 | Light homogenizing sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1999000623A1 (en) * | 1997-06-30 | 1999-01-07 | Donnelly Corporation | Automotive lamp lens and lamp system utilizing diffractive optics and method for making the same |
| DE19955943C1 (en) * | 1998-05-22 | 2001-02-08 | Metz Werke Gmbh & Co Kg | Optical system for variable light distribution lighting device e.g. flash lamp device or automobile headlamp, has microstructured reflective surface of rear reflector or surface of optical element |
| KR100468855B1 (en) * | 2002-11-11 | 2005-01-29 | 삼성전자주식회사 | Hybrid lens with high numerical number |
| ITTO20030853A1 (en) * | 2003-10-30 | 2005-05-01 | Ct Ricerche Plast Optica S R L | LUMINOUS DEVICE, IN PARTICULAR LUMINOUS PANEL FOR SIGNS OR INFORMATION TO THE PUBLIC, OR FANALE OF MOTOR VEHICLES. |
| JP4525539B2 (en) * | 2005-09-07 | 2010-08-18 | 日本ビクター株式会社 | Backlight device |
| CN200950166Y (en) * | 2006-04-29 | 2007-09-19 | 杭州照相机械研究所 | Aspheric surface diffraction optics lens |
| KR20100019992A (en) * | 2007-05-09 | 2010-02-19 | 코닌클리즈케 필립스 일렉트로닉스 엔.브이. | A cover for a light source |
| JP5357537B2 (en) * | 2008-12-26 | 2013-12-04 | パナソニック株式会社 | Lighting device |
| EP2394193B1 (en) * | 2009-02-03 | 2014-11-19 | Fraen Corporation | Light mixing optics and systems |
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| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI MYUAN LIGHTING TECHNOLOGY CO., LTD. |
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| C10 | Entry into substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20111018 Address after: 610209 Sichuan Province, Chengdu Shuangliu box 350 Applicant after: Photoelectric Technology Inst., Chinese Academy of Sciences Co-applicant after: Shanghai Mingyuan Optoelectric Technology Co., Ltd. Address before: 610209 Sichuan Province, Chengdu Shuangliu box 350 Applicant before: Photoelectric Technology Inst., Chinese Academy of Sciences |
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Granted publication date: 20130821 Termination date: 20150214 |
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