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公开(公告)号：US09864110B2
公开(公告)日：2018-01-09
申请号：US15300447
申请日：2014-09-30
发明人： Kazuki Machida , Fumitaka Ishimori
CPC分类号： G02B5/0278 , F21V3/0625 , G02B5/0242 , G03B21/62
摘要： A light diffuser and its use are provided, which 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.
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公开(公告)号：US20170115434A1
公开(公告)日：2017-04-27
申请号：US15300447
申请日：2014-09-30
发明人： Kazuki Machida , Fumitaka Ishimori
CPC分类号： G02B5/0278 , F21V3/0625 , G02B5/0242 , G03B21/62
摘要： A light diffuser and its use are provided, which 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.
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公开(公告)号：US10088609B2
公开(公告)日：2018-10-02
申请号：US15023821
申请日：2014-09-24
发明人： Fumitaka Ishimori , Kazuki Machida
摘要： There is provided a light diffuser which can alleviate glare of light emitted from a light source while preventing a decrease in brightness of the emitted light despite the presence of the light diffuser. The light diffuser, contains a thermoplastic resin and transparent particles added thereto. The light diffuser has a total light transmittance in a range of 50 to 85%, and a wavelength selectivity in a rectilinear light ratio in a range of 1.5 to 5.0, as obtained by following formulas (1)-(3): (wavelength selectivity in rectilinear light ratio)=(rectilinear light ratio of 550-nm light)/(rectilinear light ratio of 450-nm light) (1) (rectilinear light ratio of 550-nm light)=(rectilinear light transmittance for 550-nm light)/(total transmittance for 550-nm light) (2) (rectilinear light ratio of 450-nm light)=(rectilinear light transmittance for 450-nm light)/(total transmittance for 450-nm light) (3).
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公开(公告)号：US20160231470A1
公开(公告)日：2016-08-11
申请号：US15023821
申请日：2014-09-24
发明人： Fumitaka Ishimori , Kazuki Machida
CPC分类号： G02B5/02 , F21K9/232 , F21K9/27 , F21K9/69 , F21V3/0625 , F21Y2101/00 , G02B5/0242
摘要： There is provided a light diffuser which can alleviate glare of light emitted from a light source while preventing a decrease in brightness of the emitted light despite the presence of the light diffuser. The light diffuser, contains a thermoplastic resin and transparent particles added thereto. The light diffuser has a total light transmittance in a range of 50 to 85%, and a wavelength selectivity in a rectilinear light ratio in a range of 1.5 to 5.0, as obtained by following formulas (1)-(3): (wavelength selectivity in rectilinear light ratio)=(rectilinear light ratio of 550-nm light)/(rectilinear light ratio of 450-nm light) (1) (rectilinear light ratio of 550-nm light)=(rectilinear light transmittance for 550-nm light)/(total transmittance for 550-nm light) (2) (rectilinear light ratio of 450-nm light)=(rectilinear light transmittance for 450-nm light)/(total transmittance for 450-nm light) (3).
摘要翻译： 提供了一种光漫射器，其可以减轻光源发出的光的眩光，同时防止发光的亮度降低，尽管存在光扩散器。 光扩散器包含热塑性树脂和添加了透明颗粒。 光扩散器的总透光率为50〜85％，直线光比的波长选择性为1.5〜5.0，如下式（1）〜（3）所示：（波长选择性 （直线光比550nm）/（直线光比450nm光）（1）（直线光比550nm光）=（直线光透射率为550nm的光 ）/（550nm光的总透射率）（2）（450nm光的直线光比）=（450nm光的直线透光率）/（450nm光的全透射率）（3）。
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