CN104132303A - LED solar simulator optical system - Google Patents
LED solar simulator optical system Download PDFInfo
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- CN104132303A CN104132303A CN201310160423.5A CN201310160423A CN104132303A CN 104132303 A CN104132303 A CN 104132303A CN 201310160423 A CN201310160423 A CN 201310160423A CN 104132303 A CN104132303 A CN 104132303A
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Abstract
The invention relates to an LED solar simulator optical system utilizing high-power LEDs as a light source. A refraction type structure is adopted by a free curve lens of the system, refraction collimation is adopted in the half angle within 45 degrees, full reflection collimation is adopted in the half angle larger than 45 degrees, the thickness of the center of the lens is 7.57 mm, the diameter of the lens is 20 mm, and the lens is arranged above the LEDs. An optical integrator component is composed of a front row of lens arrays and a back row of lens arrays, each set of lenses is formed by combining a plurality of regular hexagonal element lenses and plano-convex element lenses, the regular hexagonal element lenses and the plano-convex element lenses are rotatably, symmetrically and tightly arranged according to the center, and then are arranged on a circular plate made of the same glass materials in a contact blocking mode, the two sets of element lenses are provided with light passing calibers with the same number of the element lenses, and the two sets of lenses are symmetrically and reversely arranged according to the optical axis. The lenses in the front set are field lenses, and the lenses in the rear set are projection lenses. The LEDs are arranged symmetrically about the center of the optical axis, the combined free curve lens forms parallel light beams, the light beams pass through a Fresnel convergence lens and are gathered on the field lenses located on optical integrators on the focal plane of the Fresnel convergence lens, the light beams pass through the field lenses and the projection lenses to become parallel light, and finally the parallel light passes through a Fresnel collimating lens to be gathered and projected on the irradiation face. The LED solar simulator optical system can meet the requirements that the irradiation uniformity is high, and the output energy density reaches 1000W/m<2> at the same time.
Description
Technical field
The invention belongs to optical design technical field, relate to a kind of LED solar simulator optical system.
Background technology
Solar simulation is a special kind of skill of utilizing artificial light source simulated solar irradiation Radiation Characteristics.The application of solar simulator is very extensive, and large-scale solar simulator is the chief component of space technology Satellite space environment simulation, has been mainly used in the heat balance test of satellite, the thermal design of inspection satellite.Middle-size and small-size sun mould device is for the sun sensor ground simulation test of attitude of satellite control and the ground calibration of demarcation and earth resources satellite multispectral scanner solar spectrum irradiation response, middle-size and small-size solar simulator of while one of the equipment that is also absolutely necessary in photovoltaic scientific and engineering process.Such solar simulator can be used for studying development of plants in lab simulation solar spectrum irradiation in the detection of solar cell and demarcation, remote sensing technology and agricultural sciences and cultivate fine seed strains, the resistance to radiation aging test etc. of material in building material industry.Particularly in recent years along with being suitable for succeeding in developing of health sunshine device for health care, the research artificial sun analogue technique further having promoted.
The middle-size and small-size solar simulator of applying in photovoltaic industry is in photovoltaic industry, to detect and the requisite equipment of calibrating.The light source of early stage solar simulator is mainly carbon arc lamp, its advantage be its spatial distribution and solar spectrum the most approaching, shortcoming is the easy loss of electrode material, easily causes sputter to pollute and affects the optical property of test specimen.The current large multiplex xenon lamp of solar simulator that detects calibration for photovoltaic is as light source, and its advantage is stable working state, photoelectric parameter high conformity, brightness is high, luminous efficiency is high and can form symmetrical distribution curve flux, spectral region relatively approaches true solar spectrum distribution etc.But its deficiency has restricted its versatility equally, xenon lamp solar simulator volume is large, cost is high, energy consumption is large.This makes that it can not be applied to that photovoltaic is small-sized, the test of minicell assembly with produce.In the application of large assemblies, the power consumption of xenon lamp simulator is more.In the measurement of small-sized, micromodule, generally replace standard solar simulator with halogen tungsten lamp, and the spatial distribution of halogen tungsten lamp differs greatly with solar spectrum distribution.
The optical system of the solar simulator using both at home and abroad at present, all taking xenon lamp as light source design, cannot be overlapped on the solar simulator being used in taking LED as light source, and therefore, a new optical system of necessary exploitation realizes the solar simulator taking LED as light source.
Summary of the invention
The technical problem to be solved in the present invention be to provide one can realize simultaneously output energy density reach 1000W/m
2the LED solar simulator optical system high with irradiation evenness.
In order to solve appeal technical problem, the LED solar simulator optical system that the present invention realizes comprises great power LED, free form surface collimation lens, Fresnel plus lens, light integrator, diaphragm, Fresnel collimation lens; Institute's free form surface collimation lens of telling adopts refraction-reflection type structure, in 45 ° of half-angles, adopts refraction collimation, is greater than 45 ° and adopts total reflections collimation, and lens center thickness is 7.57mm, and diameter is at 20mm, be arranged on LED directly over.Light integrator is made up of two groups of front and back lens arra, every group of lens by multiple regular hexagon elements and plano-convex element lens by the symmetrical close-packed arrays of central rotation after optical cement on glass material plectane of the same race, form, the element lens of two groups has the clear aperture of equal number, and press optical axis symmetrical reverse and install, front group is field lens, and rear group is projection lens.LED presses optical axis center symmetric arrays, and Compound Free surface lens form collimated light beam, and light beam, through Fresnel plus lens, converges on the field lens of the light integrator in Fresnel plus lens focus place, after field lens and projection lens, changes directional light into; Project to irradiation face finally by Fresnel collimation lens.
Operation principle explanation:
The radiant light that LED sends has converged on the focal plane of Fresnel plus lens through Fresnel plus lens after free form surface collimation lens collimation again, forms an irradiation profile in a big way.The field lens element lens array symmetry division that this irradiation profile is in a big way positioned on Fresnel plus lens focal plane forms multiple small light sources, then be projected mirror element lens array projection stacking image to infinity, form a uniform irradiation range of irradiation, this uniform irradiation is collimated by Fresnel collimation lens again, project to irradiation face, form uniform irradiation.
White-light LED with high color rendering index, peak wavelength are that 850nmLED, peak wavelength are that single LEDs power of 940nmLED wave band is 3W, and peak wavelength is that single the power that 660nmLED, peak wavelength are 730nmLED is 1W.
Each surface equation of free form surface collimation lens is:
Refraction upper surface equation is:
Refraction lower surface equation is:
Total reflection surface equation is:
The focal length of Fresnel plus lens is 700mm, and line is apart from 0.2mm, and thickness is 3mm.
The focal length of Fresnel collimation lens is 1142.8mm, and line is apart from 0.5mm, and thickness is 3mm.
The element lens of light integrator assembly (4) field lens is 19 regular hexagon planoconvex spotlights and 18 zigzag planoconvex spotlights, the element lens that forms light integrator mirror assembly (4) projection lens is 19 regular hexagon planoconvex spotlights and 18 zigzag planoconvex spotlights, element lens circumscribed circle diameter D
in=6mm, inscribed circle diameter D
outward=D
in× cos30 °; Focal length Jiao F of element lens:
F=r/(n-1);
R is the radius of curvature of element lens;
N is the refractive index of element lens material therefor.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is LED solar simulator optical system schematic diagram of the present invention.
Fig. 2 is free form surface threedimensional model.
Fig. 3 is free form surface profile.
Fig. 4 is light integrator assembly.
Fig. 5 is light integrator front view.
Detailed description of the invention
As shown in Figure 1, LED solar simulator optical system of the present invention comprises great power LED 1, free form surface collimation lens 2, Fresnel plus lens 3, light integrator assembly 4, diaphragm 5, Fresnel collimation lens 6; Institute's free form surface collimation lens of telling adopts refraction-reflection type structure, and threedimensional model as shown in Figure 2, adopts refraction collimation in 45 ° of half-angles, is greater than 45 ° and adopts total reflections collimation, and lens center thickness is 7.57mm, and diameter is at 20mm, and front view as shown in Figure 3.By central shaft be arranged on LED directly over.Light integrator assembly is told as shown in Figure 4 and Figure 5 by institute, formed by two groups of front and back lens arra, every group of lens by multiple regular hexagon element lens by the symmetrical close-packed arrays of central rotation after optical cement on glass material of the same race, form, install by optical axis symmetrical reverse, front group is field lens, and rear group is projection lens.Field lens by the regular hexagon element lens of some and zigzag lens close-packed arrays optical cement on optical cement plate, projection lens's mirror by the regular hexagon element lens of some and zigzag lens close-packed arrays optical cement on optical cement plate.LED array is arranged on the place apart from Fresnel plus lens 30mm, and the field lens in light integrator assembly is positioned at Fresnel plus lens focal plane place, and projection lens is positioned near Fresnel collimation lens front focal plane, and diaphragm is positioned at the front focal plane place of collimator objective.
It is 1.49 PMMA material that free form surface collimation lens, Fresnel plus lens, Fresnel collimation lens all adopt refractive index, and light integrator assembly all adopts JGS1 glass.
White-light LED with high color rendering index, peak wavelength are that 850nmLED, peak wavelength are that single LEDs power of 940nmLED wave band is 3W, and peak wavelength is that single the power that 660nmLED, peak wavelength are 730nmLED is 1W.
Each surface equation of free form surface collimation lens is:
Refraction upper surface equation is:
Refraction lower surface equation is:
Total reflection surface equation is:
The focal length of Fresnel plus lens is 700mm, and line is apart from 0.2mm, and thickness is 3mm.
The focal length of Fresnel collimation lens is 1142.8mm, and line is apart from 0.5mm, and thickness is 3mm.
In light integrator assembly, field lens is by 19 element lens and 18 planoconvex spotlight optical cement Constitution Elements lens arras on glass material plectane of the same race that structure is identical with element lens, and projection lens is by 19 element lens and 18 planoconvex spotlight optical cement Constitution Elements lens arras on glass material plectane of the same race that structure is identical with element lens.
The present invention can meet irradiation evenness height simultaneously and output energy density reaches 1000W/m
2requirement.
The present invention can reach following index:
A) effective area of irradiation diameter: Φ 220mm;
B) 3.2 ° of angle of collimation, irradiation level is similar to 1000 W/m
2;
C) irradiation nonuniformity 3.8%;
D) Spectral matching: AM1.5 spectral irradiance distributes.
Claims (7)
1.LED solar simulator optical system, is characterized in that: comprise LED (1), free form surface collimation lens (2), Fresnel plus lens (3), light integrator assembly (4), diaphragm (5), Fresnel collimation lens (6); Institute's free form surface collimation lens of telling (2) adopts refraction-reflection type structure, in 45 ° of half-angles, adopts refraction collimation, is greater than 45 ° and adopts total reflections collimation, and lens center thickness is 7.57mm, and diameter is at 20mm, be arranged on LED (1) directly over.
2. light integrator (4) is made up of two groups of front and back lens arra, every group of lens by multiple regular hexagon element lens and plano-convex element lens by the symmetrical close-packed arrays of central rotation after optical cement on glass material plectane of the same race, combine, the element lens of two groups has the clear aperture of equal number, and press optical axis symmetrical reverse and install, front group is field lens, and rear group is projection lens.
3.LED (1) presses optical axis center symmetric arrays; Compound Free surface lens (2) form collimated light beam; light beam is through Fresnel plus lens (3); converge on the field lens of the light integrator (4) in Fresnel plus lens (3) focus place, after field lens and projection lens, change directional light into; Project to irradiation face finally by Fresnel collimation lens (6).
4. the LED solar simulator optical system of telling according to claim 1, is characterized in that:
A) white-light LED with high color rendering index, peak wavelength are that 850nmLED, peak wavelength are that single LEDs power of 940nmLED wave band is 3W, and peak wavelength is that single the power that 660nmLED, peak wavelength are 730nmLED is 1W.
5.b) each surface equation of free form surface collimation lens is:
Refraction upper surface equation is:
Refraction lower surface equation is:
Total reflection surface equation is:
C) focal length of Fresnel plus lens is 700mm, and line is apart from 0.2mm, and thickness is 3mm.
6.d) focal length of Fresnel collimation lens is 1142.8mm, and line is apart from 0.5mm, and thickness is 3mm.
7.f) element lens of light integrator assembly (4) field lens is 19 regular hexagon planoconvex spotlights and 18 zigzag planoconvex spotlights, the element lens that forms light integrator mirror assembly (4) projection lens is 19 regular hexagon planoconvex spotlights and 18 zigzag planoconvex spotlights, element lens circumscribed circle diameter D
in=6mm, inscribed circle diameter D
outward=D
in× Cos30 °; The focal length F of element lens:
F=r/(n-1);
R is the radius of curvature of element lens;
N is the refractive index of element lens material therefor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310160423.5A CN104132303A (en) | 2013-05-05 | 2013-05-05 | LED solar simulator optical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310160423.5A CN104132303A (en) | 2013-05-05 | 2013-05-05 | LED solar simulator optical system |
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| CN104132303A true CN104132303A (en) | 2014-11-05 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107972895A (en) * | 2017-11-20 | 2018-05-01 | 上海卫星装备研究所 | High heat flux density Orbital heat flux simulator under vacuum low-temperature environment |
| CN108167707A (en) * | 2018-02-05 | 2018-06-15 | 北京卫星环境工程研究所 | Heavy caliber Muti-channel integrator system |
| CN108650739A (en) * | 2018-06-08 | 2018-10-12 | 南京理工大学 | A kind of separation wave band background optical simulator for laser radar performance detection |
| CN111724668A (en) * | 2020-07-24 | 2020-09-29 | 长春理工大学 | Optical axis alignment method and device of multi-light-source mixed solar simulation device |
| CN113568166A (en) * | 2021-08-12 | 2021-10-29 | 长春理工大学 | Design method of variable curvature optical integrator |
| CN116761068A (en) * | 2023-08-17 | 2023-09-15 | 荣耀终端有限公司 | Camera module and electronic equipment |
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| JP2002350779A (en) * | 2001-05-30 | 2002-12-04 | Seiko Epson Corp | Illumination optical system, liquid crystal display device and projector |
| CN101907773A (en) * | 2010-07-13 | 2010-12-08 | 中国科学院长春光学精密机械与物理研究所 | High-collimation solar simulator optical system with auto-collimation aiming system |
| CN102434854A (en) * | 2011-12-23 | 2012-05-02 | 中国科学院长春光学精密机械与物理研究所 | High-concentration collimating solar simulator optical system |
| CN102588892A (en) * | 2011-12-29 | 2012-07-18 | 中国科学院长春光学精密机械与物理研究所 | Optical system of solar simulator |
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2013
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Patent Citations (4)
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| JP2002350779A (en) * | 2001-05-30 | 2002-12-04 | Seiko Epson Corp | Illumination optical system, liquid crystal display device and projector |
| CN101907773A (en) * | 2010-07-13 | 2010-12-08 | 中国科学院长春光学精密机械与物理研究所 | High-collimation solar simulator optical system with auto-collimation aiming system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107972895A (en) * | 2017-11-20 | 2018-05-01 | 上海卫星装备研究所 | High heat flux density Orbital heat flux simulator under vacuum low-temperature environment |
| CN108167707A (en) * | 2018-02-05 | 2018-06-15 | 北京卫星环境工程研究所 | Heavy caliber Muti-channel integrator system |
| CN108650739A (en) * | 2018-06-08 | 2018-10-12 | 南京理工大学 | A kind of separation wave band background optical simulator for laser radar performance detection |
| CN111724668A (en) * | 2020-07-24 | 2020-09-29 | 长春理工大学 | Optical axis alignment method and device of multi-light-source mixed solar simulation device |
| CN111724668B (en) * | 2020-07-24 | 2022-04-12 | 长春理工大学 | Optical axis alignment method of multi-light-source mixed solar simulation device |
| CN113568166A (en) * | 2021-08-12 | 2021-10-29 | 长春理工大学 | Design method of variable curvature optical integrator |
| CN113568166B (en) * | 2021-08-12 | 2023-05-26 | 长春理工大学 | Design method of variable curvature optical integrator |
| CN116761068A (en) * | 2023-08-17 | 2023-09-15 | 荣耀终端有限公司 | Camera module and electronic equipment |
| CN116761068B (en) * | 2023-08-17 | 2023-11-17 | 荣耀终端有限公司 | Camera module and electronic equipment |
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Application publication date: 20141105 |