Optical: systems and elements – Diffusing of incident light
Patent
1997-03-27
1999-05-11
Spyrou, Cassandra
Optical: systems and elements
Diffusing of incident light
359883, 359884, 359531, 359529, 359530, 359613, 359614, G02B21/60
Patent
active
059033916
ABSTRACT:
An optical film having high light transmittance and excellent light diffusibility is provided. The optical film comprises a transparent substrate 1 and a light diffusion layer 2 formed on one or both sides of the substrate 1. As the resin 3 of the light diffusion layer 2, an ionizing radiation curable resin is used in an amount of, preferably, not less than 50% of the resin and a small amount of the light diffusive agent is dispersed therein. The optical film exhibits excellent light diffusion effect even though the content of the light diffusive agent is small and also exhibits high light transmittance because of the small content of the light diffusive agent. Accordingly, this optical film is suitable for applications such as a color liquid crystal display which is required to have a sufficient brightness, and in combination with another optical material such as a prism lens.
REFERENCES:
patent: 4448491 (1984-05-01), Okubo
patent: 5417515 (1995-05-01), Hachey et al.
patent: 5563738 (1996-10-01), Vance
patent: 5627426 (1997-05-01), Whitman et al.
patent: 5728645 (1998-03-01), Oshima et al.
Kato Takaaki
Toshima Yasumaro
Kimoto & Co., Ltd.
Sikd-er Mohammad Y.
Spyrou Cassandra
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