Title:
太陽光集光用光学シートの設計方法
Document Type and Number:
Japanese Patent JP5685186
Kind Code:
B2
Abstract:
A design method for an optical sheet for solar concentration and an optical sheet for solar concentration obtained by means of the design method are disclosed. The design method is characterized in that , for a resin optical sheet for solar concentration containing an ultraviolet absorber in a base material thereof, an amount of the ultraviolet absorber to be contained in the base material is determined such that: in an accelerated degradation test by means of a metal-halide-lamp weathering test (device specification: JTM G 01:2000, Japan Testing Machinery Association), decrease in average transmittance in a wavelength range of 400 nm to 1850 nm after testing for an irradiation time T 1 satisfies the following equation (1) Ä uv 0 + Ä uv T 1 > Ä 0 0 + Ä 0 T 1 and that decrease in transmittance at each of wavelengths in the wavelength range from a corresponding initial value after testing for the irradiation time T 1 is not greater than 10%. T 1 is the accelerated test time required corresponding to the actual location of use. The optical sheet of the present invention is capable of efficiently concentrating light without decrease in transmittance while being used for a long time in an environment with a large amount of ultraviolet radiation.
Inventors:
豊原 誠
小野 陽二
松崎 一朗
小野 陽二
松崎 一朗
Application Number:
JP2011516072A
Publication Date:
March 18, 2015
Filing Date:
May 28, 2010
Export Citation:
Assignee:
株式会社クラレ
International Classes:
G02B3/08; F24S23/30; G02B1/04; H01L31/054
Domestic Patent References:
| JP2005099802A | 2005-04-14 | |||
| JP2007525550A | 2007-09-06 | |||
| JP2006343435A | 2006-12-21 | |||
| JPH05156113A | 1993-06-22 |
Foreign References:
| WO2006035698A1 | 2006-04-06 | |||
| WO2009001505A1 | 2008-12-31 |
Attorney, Agent or Firm:
Tamio Nishiwaki