发明名称 |
OPTICAL ELEMENT AND CONCENTRATED PHOTOVOLTAIC DEVICE |
摘要 |
Provided are an optical element and a concentrating photovoltaic device which are each capable of preventing warpage and deformation of an optical functional pattern formed in a surface thereof due to stress even in an environment with extreme temperature changes. An optical element (4) of a concentrating photovoltaic device (1) concentrating sunlight includes: a glass substrate (5) and a sheet-like molded body (6) which is made of an organic resin and includes a Fresnel lens pattern (6a) in a surface and has the other surface bonded to the glass substrate (5). The sheet-like molded body (6) has a tensile elastic modulus of 1500 MPa or less, a linear expansion coefficient of 7.0×10 -5 /°C or less, an average transmittance of 85% or more in a wavelength range from 350 to 1850 nm at a thickness of 400 µm, and a haze value of 1.0% or less. |
申请公布号 |
EP2871499(A1) |
申请公布日期 |
2015.05.13 |
申请号 |
EP20130816373 |
申请日期 |
2013.07.09 |
申请人 |
KURARAY CO., LTD. |
发明人 |
ABE, KOJI;HIRAMATSU, SHINJI;FUJITA, KATSUHIRO |
分类号 |
G02B3/00;C08J5/18;C08L33/10;C08L53/00;G02B1/11;G02B3/08;H01L31/052 |
主分类号 |
G02B3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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