发明名称 |
OPTICAL DIFFUSER AND APPLICATION THEREFOR |
摘要 |
A light diffuser and its use are provided. This light diffuser not only reduces a color change in a source light when the light diffuser is disposed on an optical path of a light source, but also has a good light transmission property and a good light diffusion property. The light diffuser contains a thermoplastic resin and transparent particles added thereto. The total light transmittance of the light diffuser is 75% or more. The degree of dispersion of the light diffuser is 2° or more, the degree of dispersion being defined as a transmission angle at which a light transmittance is 50% of a rectilinear light transmittance when light is emitted to a surface of the light diffuser in a direction normal to the surface. The difference between the rectilinear light transmittance at 460 nm and the rectilinear light transmittance at 580 nm of the light diffuser is 0.96% or less. |
申请公布号 |
EP3128349(A1) |
申请公布日期 |
2017.02.08 |
申请号 |
EP20140888040 |
申请日期 |
2014.09.30 |
申请人 |
Sekisui Plastics Co., Ltd. |
发明人 |
MACHIDA, Kazuki;ISHIMORI, Fumitaka |
分类号 |
G02B5/02;E04F13/08;F21V3/04;F21Y101/00;G03B21/62 |
主分类号 |
G02B5/02 |
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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