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WO2016121369A1 - Élément optique, et dispositif de génération d'énergie solaire par condensation de lumière - Google Patents

Élément optique, et dispositif de génération d'énergie solaire par condensation de lumière Download PDF

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Publication number
WO2016121369A1
WO2016121369A1 PCT/JP2016/000354 JP2016000354W WO2016121369A1 WO 2016121369 A1 WO2016121369 A1 WO 2016121369A1 JP 2016000354 W JP2016000354 W JP 2016000354W WO 2016121369 A1 WO2016121369 A1 WO 2016121369A1
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WIPO (PCT)
Prior art keywords
optical element
fresnel lens
concavo
light
convex structure
Prior art date
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Ceased
Application number
PCT/JP2016/000354
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English (en)
Japanese (ja)
Inventor
佳実 大田
奈美子 綾野
伊久雄 大西
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Kuraray Co Ltd
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Kuraray Co Ltd
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Publication date
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Priority to JP2016571859A priority Critical patent/JPWO2016121369A1/ja
Publication of WO2016121369A1 publication Critical patent/WO2016121369A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/118—Anti-reflection coatings having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/10—Supporting structures directly fixed to the ground
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/40—Optical elements or arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to an optical element and a concentrating solar power generation device.
  • An optical element in which the refractive index is controlled in a pseudo manner by forming a fine structure smaller than the wavelength of light on the surface to reduce the reflectance of the surface is known.
  • the light cannot capture the structure sufficiently, and there appears to be a medium that averages the fine structure and the surrounding medium on the surface of the optical element. Behave.
  • a low refractive index that cannot be obtained with a material used for a normal optical element can be realized, so that reflection of light on the surface of the optical element can be reduced (Patent Document 1).
  • an optical element is known that reduces reflection of light on the surface by forming an uneven structure on the surface so that the three-dimensional average surface roughness is 5 nm to 100 nm (Patent Document 2).
  • the present invention has been made to solve such problems, and provides an optical element and a concentrating solar power generation device that can reduce reflection on the surface of incident light and reduce scattering on the surface.
  • the purpose is to do.
  • the optical element of the present invention is An optical element formed using a transparent material, At least one of the surfaces of the optical element through which light passes has a concavo-convex structure with a period of 300 nm or less, In the concavo-convex structure, a sum P of power spectral densities of components having a period of 0.4 ⁇ m or more and 3.3 ⁇ m or less is 500 nm 4 or less.
  • the optical element is preferably a condensing lens used for condensing light.
  • the optical element is preferably a Fresnel lens.
  • the concentrating solar power generation device of the present invention is An optical element as described above; A solar battery cell that receives and collects light collected by the optical element; and A tracking device for directing the optical element and the solar battery cell toward the sun.
  • an optical element and a concentrating solar power generation device that can reduce reflection on the surface of incident light and reduce scattering on the surface.
  • FIG. 2 is a cross-sectional view of a Fresnel lens according to Embodiment 1.
  • FIG. 3 is an enlarged cross-sectional view of a part of the Fresnel lens according to Embodiment 1.
  • FIG. It is a figure which shows the state by which the uneven structure which concerns on Embodiment 1 is formed uniformly. It is a figure which shows the state from which the position of the uneven structure which concerns on Embodiment 1 varies in a periodic direction. It is a figure which shows the state which a wave
  • FIG. 1 is a perspective view showing a concentrating solar power generation device according to Embodiment 1.
  • FIG. 1 shows a cross-sectional view of a Fresnel lens 10 according to this embodiment.
  • the Fresnel lens 10 is a condensing lens having a positive refractive power and condenses incident light.
  • the Fresnel lens 10 is a lens composed of several concentric annular lenses in order to reduce the thickness, and has a concavo-convex cross section.
  • the Fresnel lens 10 has a plurality of sawtooth peripheral projections 11 having a sawtooth shape, and the cross section of each peripheral projection 11 has a right triangle shape.
  • the vicinity of the optical axis AX of the Fresnel lens 10 is a flat portion 12.
  • the Fresnel lens 10 may have a semicircular central protrusion in the vicinity of the optical axis AX instead of the flat portion 12.
  • the peripheral protrusion 11 may have a right triangle shape, and the peripheral protrusion 11 may be formed so that the slope of the slope becomes steeper as the distance from the central protrusion increases.
  • the Fresnel lens 10 an appropriate material can be selected according to the manufacturing method, durability, moldability, and the like.
  • glass is excellent in durability.
  • the resin is excellent in productivity, and the manufacturing cost can be reduced.
  • various resins that are transparent materials can be used.
  • methacrylic resin, polystyrene resin, polycarbonate resin, cycloolefin resin, silicone resin, methacryl-styrene copolymer resin, cycloolefin-alkene copolymer resin, and the like may be used.
  • Fresnel lens 10 for example, extrusion molding, injection molding, 2P (Photo Polymerization) molding using an ultraviolet curable resin, or hot press molding can be used.
  • An optimum molding method may be selected in consideration of the size, shape, mass productivity, etc. of the lens pattern of the Fresnel lens 10.
  • a fine concavo-convex structure is formed on the peripheral protrusion 11 on the lens surface of the Fresnel lens 10 to prevent reflection.
  • the concavo-convex structure 13 having a period of 300 nm or less is formed on the lens surface that controls the light traveling direction.
  • the scattering of light on the surface of the Fresnel lens 10 is caused by the presence of a periodic component in the concavo-convex structure 13 that is larger than the wavelength of the light. Even if the concavo-convex structure 13 has a period of 300 nm or less, if there are variations or waviness, a periodic component larger than the wavelength of incident light is generated.
  • the inventors of the present invention reduce the scattering of light on the surface of the Fresnel lens 10 when the component having a period of 0.4 ⁇ m or more and 3.3 ⁇ m or less of the concavo-convex structure 13 becomes a certain value or less, and the Fresnel lens 10 It has been found that high performance can be obtained as a condenser lens. The abundance of the specific periodic component can be obtained using the power spectral density.
  • the Fresnel lens 10 when the sum P of power spectral densities of components having a period of 0.4 ⁇ m or more and 3.3 ⁇ m or less is 500 nm 4 or less, the Fresnel lens 10 can obtain high performance as a condenser lens.
  • the sum P of the power spectral density of the periodic 0.4 ⁇ m or 3.3 ⁇ m following components of the concavo-convex structure 13 is more preferably 340 nm 4 or less.
  • the sum P of power spectral densities is calculated as follows.
  • x n is defined by the following equation (2).
  • the frequency resolution ⁇ k [ ⁇ m ⁇ 1 ] is defined by the following equation (3).
  • ⁇ k is expressed as a frequency interval k l -k l-1 of the l-th and l-1 th.
  • N ⁇ 1 is set to N
  • the integration range of ⁇ is changed from 0 to N ⁇ 1 to 1 to N, and it can be approximated to N + 1 ⁇ N assuming that N is sufficiently large in the coefficient portion and the exponent portion.
  • kl is expressed as the following expression (5)
  • the frequency f is defined in the following expression (5).
  • z (n) is the height at the n-th measurement point and can be measured with a surface shape measuring device. Since it is necessary to measure a minute structure with a period of 300 nm, an atomic force microscope (AFM) or the like is used for the measurement.
  • AFM atomic force microscope
  • Power (f) is the intensity of the concavo-convex structure 13 with respect to the frequency f, and is obtained by Fourier transform of z (n). Since the obtained F (f) is a complex number, an absolute value is calculated. Furthermore, in order to correct the peak value due to the frequency interval, correction is performed at 2 / ⁇ k. Power (f) is expressed by the following formula (7).
  • PSD (f) is the power spectral density at frequency f.
  • PSD (f) is represented by the following formula (9).
  • ⁇ f represents the frequency resolution, similarly to ⁇ k in the above description.
  • PSD (f) is data that is integrated one-dimensionally from a center frequency by isotropic integration with respect to a two-dimensional Fourier transform. As a result, a power spectrum when viewed isotropically from an arbitrary point is calculated.
  • the sum of power spectral densities from 0.4 ⁇ m to 3.3 ⁇ m is obtained by the following equation (10).
  • the power spectral density in this range is larger than 500 nm 4 , the light is scattered when it passes, and the condensed spot spreads.
  • the Fresnel lens 10 of this embodiment can reduce interface reflection and scattering, it can collect light efficiently. Therefore, by using the Fresnel lens 10, a highly efficient concentrating solar power generation device can be obtained. Further, by suppressing the scattering, it is possible to suppress a decrease in efficiency when the refraction angle is changed at different wavelengths and a decrease in efficiency due to deformation in the use environment.
  • a method of etching after forming the lens may be used, or a mold of the Fresnel lens 10 on which the concavo-convex structure 13 is formed is prepared, and the concavo-convex structure 13 and the lens shape are integrated.
  • a molding method may be used. The method of integrally forming the concavo-convex structure 13 and the lens shape has high mass productivity and can reduce the manufacturing cost.
  • a method for producing a mold for integrally molding the Fresnel lens 10 and the concavo-convex structure 13 it can be produced by forming the concavo-convex structure 13 on the Fresnel lens 10 and then obtaining an inverted shape by electroforming.
  • a resist is applied on the Fresnel lens 10, the resist is exposed and developed by photolithography or electron beam lithography, and etching is performed using the resist as a mask.
  • etching is performed using the resist as a mask.
  • a method of etching using a mask is a method in which an aluminum film is formed on the Fresnel lens 10 and a hole structure is produced by anodic oxidation of aluminum.
  • the surface opposite to the lens surface of the Fresnel lens 10 can be subjected to a surface treatment according to the usage environment of the Fresnel lens 10.
  • a hard coat material can be applied to prevent damage due to dust or dirt, and a low refractive index material can be applied to reduce reflection on this surface.
  • many optical elements are used for the purpose of making the light from the point light source parallel and changing the angle.
  • the Fresnel lens 10 of the present embodiment for the display, high efficiency and light operability can be obtained, and a high-quality display can be obtained.
  • Solar power generation is highly expected as a new power generation means in order to cope with the depletion of petroleum resources and to reduce the burden on the environment.
  • a concentrating solar power generation device generates sunlight by making sunlight enter a small solar cell with a lens, a parabolic mirror, or the like, and performing photoelectric conversion with the solar cell.
  • the concentrating solar power generation device collects sunlight and then enters the solar cell. Therefore, since the area of a photovoltaic cell can be made small, a high-cost photovoltaic cell can also be used practically. In addition, since high-cost solar cells can be used practically, high-efficiency solar cells can be used and power can be generated with high efficiency.
  • the concentrating solar power generation apparatus As the concentrating solar power generation apparatus, a tracking type in which the lens direction is moved in the direction of sunlight in order to collect parallel light from the sun is mainly used. Large-scale power generation is more suitable because it requires a tracking system to track sunlight.
  • the concentrating solar power generation device in addition to the photoelectric conversion efficiency of the solar battery cell, the light collection efficiency when concentrating sunlight with a lens or a parabolic mirror and collecting it in the solar battery cell is the overall power generation efficiency. Affects.
  • a parabolic mirror or a lens is used as a condensing means of the concentrating solar power generation apparatus, and a Fresnel lens is often used among the lenses. Since the Fresnel lens can be reduced in size and thickness as compared with a normal condensing lens, the photovoltaic power generation system can be reduced in size and weight. In addition, since the material can be reduced in size and thickness, the material used for manufacturing the lens can be reduced, so that the productivity of the lens is increased and the cost can be reduced.
  • FIG. 6 shows an example of a concentrating solar power generation apparatus 100 using the Fresnel lens 10 according to this embodiment.
  • the concentrating solar power generation device 100 includes a Fresnel lens 10, a solar battery cell 20, a support member 30, and a solar tracking device 40. By combining one Fresnel lens 10 and one solar battery cell 20, one concentrating solar power generation module is formed. A plurality of concentrating solar power generation modules are arranged on the support member 30.
  • the solar battery cell 20 receives light and converts light energy into electric energy.
  • a solar cell such as Si, GaAs, CuInGaSe, CdTe, AlGaAs, InGaP, InGaAsP, AlInGaP, AlInGaAsP, or Ge can be used.
  • the structure of the solar battery cell 20 can be applied in various forms such as a single-junction type cell, a monolithic multi-junction type cell, or a mechanical stack type in which various solar battery cells having different wavelength sensitivity regions are connected. It is.
  • the solar cell 20 may be a multi-junction solar cell in which a plurality of types of pn junctions having different absorption wavelength bands are stacked.
  • the support member 30 is a member that supports the Fresnel lens 10 and the solar battery cell 20.
  • the support member 30 may be a box-shaped housing. In FIG. 6, the manner in which the support member 30 supports the Fresnel lens 10 is not shown, but any support method may be used as long as it is a general support method.
  • the solar cell 20 may be disposed on the flat plate portion of the support member 30 and the Fresnel lens 10 may be supported by a pole standing on the flat plate portion. Further, the Fresnel lens 10 may be supported by the side wall of the housing.
  • the solar tracking device 40 supports the bottom surface of the surface of the support member 30 where the solar cells 20 are disposed so as to be able to swing.
  • the solar tracking device 40 changes the direction of the support member 30 so that the normal of the surface on which the solar cells 20 are arranged faces the sun. Thereby, since the photovoltaic cell 20 can always be turned to the direction of the sun, power generation efficiency can be improved.
  • the Fresnel lens 10 When the Fresnel lens 10 is used in the concentrating solar power generation device 100, (a) interface reflection on the incident surface / reflecting surface of the Fresnel lens 10, (b) diffraction spread due to the periodic structure of the Fresnel lens 10, (c ) Spreading of the condensing spot due to wavelength dispersion of the material used for the Fresnel lens 10, (d) Defective lens shape of the Fresnel lens 10, (e) Refractive index of the Fresnel lens 10 due to changes in usage environment (temperature, humidity) In addition, the light collection efficiency decreases due to factors such as changes in the lens shape.
  • (a) and (b) are theoretically possible condensing losses, and (a) occurs regardless of the shape of the Fresnel lens 10 and is one of the main factors of condensing loss. .
  • the condensing loss of (c) occurs when the lens shape is designed at a specific wavelength and the refractive index changes at other wavelengths and the focal length differs. Since the focal length is shifted, the condensing spot is widened at the position of the solar battery cell 20, and the light incident on the solar battery cell 20 is reduced. Further, (e) has a different occurrence state depending on the use environment, but the light incident on the solar cell 20 is reduced by the shift and spread of the focused spot due to the expansion due to temperature and humidity and the change of the refractive index.
  • the Fresnel lens 10 of the present embodiment can reduce reflection on the surface of incident light and reduce scattering on the surface. By using the Fresnel lens 10 of the present embodiment, it is possible to increase the light collection efficiency to the solar battery cell, and thus it is possible to provide a highly efficient light collecting solar power generation apparatus.
  • a sample of the Fresnel lens 10 was prepared by the following method, the shape of the uneven structure 13 on the sample surface was measured, and the transmittance when a laser was incident on the sample was measured.
  • ⁇ Measurement method of surface irregularities The shape of the concavo-convex structure 13 was measured using an atomic force microscope (AFM).
  • AFM atomic force microscope
  • Nanoscope3 manufactured by digital instrument was used.
  • As a cantilever Olympus Micro Cantilever OMCL-AC160TL-C2 was used. Measurement was performed using the tapping mode of an atomic force microscope.
  • the scan range was an area of 10 ⁇ m ⁇ 10 ⁇ m, and the scan rate was 2.0 Hz.
  • ⁇ Sample preparation method> aluminum was deposited on a silicon wafer so as to have a film thickness of 900 nm. Next, the silicon wafer was immersed in an electrolytic solution, and the surface aluminum thin film was anodized. Next, a photo-curing resin is applied to the substrate after anodization, and the photo-curing resin is effected between the substrate and the acrylic resin plate, thereby transferring the shape of the substrate onto the acrylic resin plate. 13 was produced. After the concavo-convex structure 13 was produced, the concavo-convex structure 13 was observed using a scanning electron microscope (SEM).
  • SEM scanning electron microscope
  • He-Ne laser (wavelength 633 nm, 05-LHR-213 made by MELLES GRIOT) was incident on the acrylic resin plate on which the concavo-convex structure 13 was formed at an incident angle of 50 °, and passed through an aperture with a diameter of 6 mm at a position 2 m ahead.
  • the amount of light was measured with a power meter (ADCMT 8230T manufactured by ADC Corporation).
  • the amount of incident light was normalized by the amount of light not passing through the sample, and the transmittance of the laser light was calculated.
  • the Fresnel lens 10 has a plurality of peripheral protrusions 11 having a sawtooth shape, and the cross section of each peripheral protrusion 11 has a right triangle shape. Since the light incident surface of the peripheral protrusion 11 is flat, if the laser light is incident from the direction along the optical axis AX of the Fresnel lens 10 to the peripheral protrusion 11 where the uneven structure 13 is formed, the uneven structure 13 There is no difference in light scattering when the formed acrylic resin plate is tilted and laser light is incident.
  • the traveling direction of the light changes, so that the scattered light cannot pass through the aperture. Accordingly, the amount of transmitted light excluding scattered light can be measured by the above-described measurement, and the amount of light reaching the solar battery cell when passing through the Fresnel lens 10 can be estimated.
  • FIG. 7 shows the measurement result of the sum P of the power spectral density of the concavo-convex structure 13 in Examples 1 to 3 and Comparative Examples 1 and 2 and the transmittance of the laser beam.
  • the horizontal axis in FIG. 7 is the sum P of the power spectral density of the concavo-convex structure 13, and the vertical axis is the transmittance of the laser beam.
  • Table 1 shows the numerical values of the measurement results of the sum P of the power spectral densities of Examples 1 to 3 and Comparative Examples 1 and 2 and the transmittance of the laser beam.
  • FIG. 8 is an SEM photograph of the concavo-convex structure 13 according to Example 1.
  • An uneven structure with a period of 200 nm is formed on the surface of the Fresnel lens 10.
  • the sum P of the power spectral density of this structure was 334 nm 4.
  • the transmittance when the laser beam is incident is 90%, which is higher than the case where the concavo-convex structure 13 is not provided. This is because the uneven structure 13 reduces reflection on the surface of the Fresnel lens 10 and the uneven structure 13 suppresses scattering.
  • FIG. 9 is an SEM photograph of the concavo-convex structure 13 according to the second example.
  • An uneven structure with a period of 200 nm is formed on the surface of the Fresnel lens 10, and the uneven structure is uniformly formed on the entire lens surface.
  • the sum P of power spectral density was 197 nm 4.
  • the transmittance is 92%, which is higher than that without the concavo-convex structure 13. Accordingly, it is possible to obtain the Fresnel lens 10 having high light collection efficiency.
  • FIG. 10 is an SEM photograph of the concavo-convex structure 13 according to Example 3.
  • An uneven structure with a period of 200 nm is formed on the surface of the Fresnel lens 10.
  • An uneven structure is uniformly formed on the entire lens surface.
  • the sum P of power spectral density was 135 nm 4.
  • the transmittance is 92%, which is higher than that without the concavo-convex structure 13. Accordingly, it is possible to obtain the Fresnel lens 10 having high light collection efficiency.
  • FIG. 11 is an SEM photograph of the concavo-convex structure 13 according to the comparative example.
  • An uneven structure with a period of 200 nm is formed on the surface of the Fresnel lens 10.
  • Each convex part is in partial contact, and there is a part with a large gap. Moreover, the height of the convex portion is not uniform, and there is a large undulation.
  • the sum P of the power spectral density of the concavo-convex structure 13 was 959 nm 4 .
  • the transmittance when the laser beam was incident was 87%, which was lower than that without the uneven structure 13. This is because the scattering of light by the concavo-convex structure 13 is larger than the reduction in reflection at the interface, and the Fresnel lens 10 having the concavo-convex structure 13 decreases the light collection efficiency.
  • FIG. 12 is an SEM photograph of the concavo-convex structure 13 according to Comparative Example 2.
  • An uneven structure with a period of 200 nm is formed on the surface of the Fresnel lens 10.
  • the height of each convex part is non-uniform
  • the sum P of the power spectral density of the concavo-convex structure 13 was 3203 nm 4 .
  • the transmittance when the laser beam was incident was 85%, which was greatly reduced as compared with the case without the uneven structure 13. This is because the scattering of light by the concavo-convex structure 13 is larger than the reduction in reflection at the interface, and the efficiency of the Fresnel lens 10 having the concavo-convex structure 13 is lowered.
  • the optical element is not limited to the Fresnel lens 10, and may be a condenser lens, a prism, a microlens array, or the like.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Photovoltaic Devices (AREA)

Abstract

La présente invention concerne : un élément optique dans lequel la réflexion d'une lumière incidente sur la surface de l'élément est réduite, et une diffusion de la lumière incidente sur la surface de l'élément peut être réduite ; et un dispositif de génération d'énergie solaire par condensation de lumière. Cet élément optique (lentille de Fresnel 10) est formé à l'aide d'un matériau transparent, et est caractérisé par le fait qu'il a une structure irrégulière avec une période de 300 nm ou moins sur au moins une surface parmi les surfaces de l'élément optique à travers lequel la lumière passe, et dans la structure irrégulière, une somme P des densités spectrales de puissance d'éléments ayant une période de 0,4 µm à 3,3 µm est de 500 nm4 ou moins.
PCT/JP2016/000354 2015-01-26 2016-01-25 Élément optique, et dispositif de génération d'énergie solaire par condensation de lumière Ceased WO2016121369A1 (fr)

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CN106646692A (zh) * 2016-12-09 2017-05-10 四川云盾光电科技有限公司 一种基于微纳结构的新型高透过率菲涅尔透镜
TWI639857B (zh) * 2017-08-04 2018-11-01 雙瑩科技股份有限公司 菲涅爾透鏡及其製造方法
CN110391782A (zh) * 2018-04-20 2019-10-29 北京汉能光伏投资有限公司 太阳能电池组件

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JP2014175645A (ja) * 2013-03-13 2014-09-22 Stanley Electric Co Ltd 太陽光発電装置
JP2014186305A (ja) * 2013-02-25 2014-10-02 Panasonic Corp 光学部材

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JP2002287370A (ja) * 2001-03-27 2002-10-03 Mitsubishi Electric Corp 光学素子の製造方法
WO2011125367A1 (fr) * 2010-04-06 2011-10-13 シャープ株式会社 Élément optique, et structure anti-réfléchissante et procédé pour leur production
WO2013150742A1 (fr) * 2012-04-04 2013-10-10 パナソニック株式会社 Élément optique, dispositif d'imagerie équipé de celui-ci, et procédé de fabrication de l'élément optique
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106646692A (zh) * 2016-12-09 2017-05-10 四川云盾光电科技有限公司 一种基于微纳结构的新型高透过率菲涅尔透镜
TWI639857B (zh) * 2017-08-04 2018-11-01 雙瑩科技股份有限公司 菲涅爾透鏡及其製造方法
CN110391782A (zh) * 2018-04-20 2019-10-29 北京汉能光伏投资有限公司 太阳能电池组件

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