CN201464664U - Fresnel lens for concentrating solar energy - Google Patents
Fresnel lens for concentrating solar energy Download PDFInfo
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- CN201464664U CN201464664U CN2009200777310U CN200920077731U CN201464664U CN 201464664 U CN201464664 U CN 201464664U CN 2009200777310 U CN2009200777310 U CN 2009200777310U CN 200920077731 U CN200920077731 U CN 200920077731U CN 201464664 U CN201464664 U CN 201464664U
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- 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
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Abstract
The utility model provides a Fresnel lens for concentrating solar energy, which is characterized in that the Fresnel lens is formed by pressing pure glass, one surface of the Fresnel lens is a smooth plane, the other surface is a Fresnel tooth-shaped surface, the middle square part of the tooth-shaped surface is the effective light transmission part, and an edge for fixing is arranged in the periphery. Compared with the prior art, the Fresnel lens for concentrating the solar energy has the advantages of high strength, long service life, low cost and high transmission rate.
Description
Technical field
The utility model relates to a kind of solar-energy light collector, relates in particular to a kind of Fresnel Lenses that is used for Photospot solar.
Background technology
The mankind face energy shortage, the greenhouse effect aggravation, and environmental pollution is serious.Sun power comes into one's own day by day as a kind of main clean energy resource.Present solar electrical energy generation mainly adopts monocrystalline silicon battery, polycrystal silicon cell or hull cell.These several batteries are subjected to the restriction of technology and principle, and efficiency ratio is lower; Compare with traditional energy, cost exceeds more than 1 times, and this becomes one of bottleneck of restriction solar electrical energy generation large-scale application.
Sunshine optically focused mode is divided into two kinds of reflective and transmission-types, and is wherein more at the research of transmission-type optically focused.Sunshine transmission optically focused generally adopts the plastics Fresnel Lenses, and Fresnel Lenses adopts the curved surface of the approximate lens of zigzag fashion, and near focus, the hot spot of formation is much smaller than the area of Fresnel Lenses through serrated face refraction post-concentration for sunshine.Fresnel Lenses has characteristics such as duplicating easy to process, saving lens material.The efficient of Fresnel Lenses and life-span are directly connected to the efficient and the life-span of high concentration solar generating system.
Use for solar electrical energy generation, lifetime of system requires more than 20 years.The Fresnel Lenses that present Salar light-gathering is used adopts PMMA (polymethylmethacrylate) materials processing to form more.The Fresnel Lenses of PMMA material is used in the Salar light-gathering field and is had following deficiency:
1, the PMMA strength of materials is not high, especially is not suitable for large-area Fresnel Lenses and fresnel lens array, and the lens distortion that the material deadweight can cause becomes big thereby influence the optically focused hot spot, reduces system effectiveness.
2, PMMA material weatherability is good inadequately, and the easy xanthochromia of material down that is exposed to the sun for a long time causes that transmitance descends, and reduces system effectiveness and life-span.
3, PMMA material surface hardness is not high, scratches easily at the wind sand environment lower surface, reduces system effectiveness and life-span.
4, the easy deformation of PMMA material, wet environment in the open air, through after the high low temperature circulation repeatedly, the easy buckling deformation of material influence the optically focused hot spot and becomes big, reduction system effectiveness and life-span.
5, PMMA material expansion coefficient is higher, differs bigger with expansion coefficient such as glass, metals, sealing and fixing difficulty, and be difficult to guarantee long-life of sealing.
In recent years, along with GaAs (gallium arsenide) 3PN batteries improved efficiency to 40%, the research and development of the ratio of solar cell useful area (the effective light-receiving area of system with) high concentration solar generating system come into one's own day by day more than 1000 times, the high power concentrator generating has higher generating efficiency, lower cost of electricity-generating.
The utility model content
The purpose of this utility model is exactly in order to provide the Fresnel Lenses that is used for Photospot solar that a kind of intensity is higher, the life-span is longer.
In order to achieve the above object, the utility model has adopted following technical scheme: a kind of Fresnel Lenses that is used for Photospot solar, be characterized in, form by pure glass compacting, it simultaneously is bright and clean plane, another side is the Fresnel toothed surface, and the middle projected square part of toothed surface is the effective light transmission part, is provided with the limit that is used for fixing all around.
Described effective light transmission partly is provided with a series of profile of tooth concentric circles, the concentrically ringed width of each profile of tooth is that 10mm is wide, and the concentrically ringed degree of depth of each profile of tooth is by the distance decision to the Fresnel Lenses optical axis of the refractive index of the focal length of lens, glass material and tooth center.
Tooth on described each profile of tooth concentric circles is a serrated teeth, and each serrated teeth all has a printing opacity flank of tooth and a lighttight flank, and the printing opacity flank of tooth is bright and clean tapered plane, and lighttight flank has 2-5 ° demoulding angle near vertical.
The utility model is used for the Fresnel Lenses of Photospot solar owing to adopted above technical scheme, compared with prior art, have following advantage and and characteristics:
1, Fresnel Lenses of the present utility model adopts sun power ultra-clear glasses compacting commonly used to form, and cost is low, the transmitance height.And through tempering, the intensity height, not yielding.
2, owing to adopt pure glass to be made, the material weatherability is very good, and long-term materials used transmitance can not descend, and material can not be out of shape.
3, material hardness height is difficult for scratching, and is easy to clean.
4, owing to adopt pure glass to make, material all can recycling, very environmental protection.
5, the life-span long, can satisfy the practical requirement of the solar power system more than 25 years.
6, the profile of tooth of 10mm spacing helps improving the homogeneity of hot spot on the focal plane.
Description of drawings
Fig. 1 is the basic structure synoptic diagram that is used for the Fresnel Lenses of Photospot solar of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to the sectional structure synoptic diagram;
The structural representation of the serrated teeth in Fig. 3 the utility model;
Fig. 4 is an optical principle synoptic diagram of the present utility model.
Embodiment
Referring to Fig. 1, Fig. 2, the Fresnel Lenses that is used for Photospot solar of the present utility model is formed by pure glass compacting, its one side 1 is bright and clean plane, another side 2 is the Fresnel toothed surface, and the middle projected square part 21 of toothed surface is the effective light transmission part, 22 is provided with the limit that is used for fixing all around.
Effective light transmission part 21 is provided with a series of profile of tooth concentric circles, tooth on each profile of tooth concentric circles is a serrated teeth, the concentrically ringed width of each profile of tooth is that 10mm is wide, and the concentrically ringed degree of depth of each profile of tooth is by the distance decision to the Fresnel Lenses optical axis of the refractive index of the focal length of lens, glass material and tooth center.
The structure of the serrated teeth in the utility model as shown in Figure 3, each serrated teeth all has a printing opacity flank of tooth a and a lighttight flank b, printing opacity flank of tooth a is bright and clean tapered plane, and lighttight flank b has 2-5 ° demoulding angle [alpha] near vertical.
Optical principle of the present utility model as shown in Figure 4, the sunshine of vertical incidence through the plane of Fresnel Lenses, does not change direction, incides on the toothed surface a of inclination, through the refraction of glass material, sunray changes direction, assembles to focus M.Ray refraction satisfies the refraction law in the optical principle.
Claims (3)
1. Fresnel Lenses that is used for Photospot solar is characterized in that: being formed by pure glass compacting, it simultaneously is bright and clean plane, and another side is the Fresnel toothed surface, and the middle projected square part of toothed surface is the effective light transmission part, is provided with the limit that is used for fixing all around.
2. the Fresnel Lenses that is used for Photospot solar as claimed in claim 1, it is characterized in that: described effective light transmission partly is provided with a series of profile of tooth concentric circles, the concentrically ringed width of each profile of tooth is that 10mm is wide, and the concentrically ringed degree of depth of each profile of tooth is by the distance decision to the Fresnel Lenses optical axis of the refractive index of the focal length of lens, glass material and tooth center.
3. the Fresnel Lenses that is used for Photospot solar as claimed in claim 1, it is characterized in that: the tooth on described each profile of tooth concentric circles is a serrated teeth, each serrated teeth all has a printing opacity flank of tooth and a lighttight flank, the printing opacity flank of tooth is bright and clean tapered plane, lighttight flank has 2-5 ° demoulding angle near vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200777310U CN201464664U (en) | 2009-06-30 | 2009-06-30 | Fresnel lens for concentrating solar energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200777310U CN201464664U (en) | 2009-06-30 | 2009-06-30 | Fresnel lens for concentrating solar energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201464664U true CN201464664U (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200777310U Expired - Fee Related CN201464664U (en) | 2009-06-30 | 2009-06-30 | Fresnel lens for concentrating solar energy |
Country Status (1)
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| CN (1) | CN201464664U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403926A (en) * | 2010-09-15 | 2012-04-04 | 晶元光电股份有限公司 | Solar energy system and production method thereof |
| CN102681047A (en) * | 2011-03-10 | 2012-09-19 | 上海合瑞新能源科技有限公司 | Composite-structure Fresnel lens |
| CN102800733A (en) * | 2012-08-26 | 2012-11-28 | 王英 | Condensing cell assembly |
| CN102854551A (en) * | 2012-09-26 | 2013-01-02 | 哈尔滨工业大学 | Method for manufacturing broad-spectrum strong-focusing Fresnel lens |
| CN105676442A (en) * | 2014-12-03 | 2016-06-15 | 财团法人金属工业研究发展中心 | Multi-spiral optical device |
| CN109416418A (en) * | 2016-07-01 | 2019-03-01 | 图茨技术股份有限公司 | Free Fresnel curved surface, the method for producing free Fresnel curved surface and the method for creating construction data set |
| CN116125571A (en) * | 2023-02-13 | 2023-05-16 | 哈尔滨工业大学（深圳） | Flexible Fresnel lens with high condensing performance and design method thereof |
-
2009
- 2009-06-30 CN CN2009200777310U patent/CN201464664U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403926A (en) * | 2010-09-15 | 2012-04-04 | 晶元光电股份有限公司 | Solar energy system and production method thereof |
| CN102681047A (en) * | 2011-03-10 | 2012-09-19 | 上海合瑞新能源科技有限公司 | Composite-structure Fresnel lens |
| CN102681047B (en) * | 2011-03-10 | 2014-07-30 | 上海合瑞新能源科技有限公司 | Composite-structure Fresnel lens |
| CN102800733A (en) * | 2012-08-26 | 2012-11-28 | 王英 | Condensing cell assembly |
| CN102854551A (en) * | 2012-09-26 | 2013-01-02 | 哈尔滨工业大学 | Method for manufacturing broad-spectrum strong-focusing Fresnel lens |
| CN102854551B (en) * | 2012-09-26 | 2014-11-26 | 哈尔滨工业大学 | Method for manufacturing broad-spectrum strong-focusing Fresnel lens |
| CN105676442A (en) * | 2014-12-03 | 2016-06-15 | 财团法人金属工业研究发展中心 | Multi-spiral optical device |
| CN109416418A (en) * | 2016-07-01 | 2019-03-01 | 图茨技术股份有限公司 | Free Fresnel curved surface, the method for producing free Fresnel curved surface and the method for creating construction data set |
| CN109416418B (en) * | 2016-07-01 | 2021-10-29 | 图茨技术股份有限公司 | Free-fresnel curved surface, method for producing a free-fresnel curved surface and method for creating a structured data set |
| US11656385B2 (en) | 2016-07-01 | 2023-05-23 | tooz technologies GmbH | Freeform Fresnel surface, method for producing a freeform Fresnel surface and method for creating a construction dataset |
| CN116125571A (en) * | 2023-02-13 | 2023-05-16 | 哈尔滨工业大学（深圳） | Flexible Fresnel lens with high condensing performance and design method thereof |
| CN116125571B (en) * | 2023-02-13 | 2023-12-19 | 哈尔滨工业大学（深圳） | Flexible Fresnel lens with high condensing performance and design method thereof |
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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: SHANGHAI ST SOLAR CO., LTD. Free format text: FORMER OWNER: ZHANG LIN Effective date: 20101104 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201103 ROOM 202, NO.157, LONGBAI VILLAGE 7, MINHANG DISTRICT, SHANGHAI TO: 201816 NO.1281, SHUANGZHU HIGHWAY, HUATING TOWN, JIADING DISTRICT, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101104 Address after: 201816, 1281, Shuang Zhu highway, Huating Town, Shanghai, Jiading District Patentee after: Shanghai Yuzhao Energy Science and Technology Co., Ltd. Address before: 201103 Shanghai city Minhang District Cypress Village 157 Room 202 No. 7 Patentee before: Zhang Lin |
|
| 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: 20100512 Termination date: 20140630 |