Film for optical applications

Details Film for optical applications Film for optical applications

2005-01-11

2005-01-11

Hess, B. Hamilton (Department: 1774)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S159000, C428S195100, C428S212000, C428S213000, C428S220000, C428S332000, C428S688000, C428S689000, C428S702000, C359S585000, C359S586000, C359S883000

Reexamination Certificate

active

06841272

ABSTRACT:
A film for optical applications comprising (A) a hard coat layer which comprises a metal oxide and a substance cured by heat or by an ionizing radiation and has a thickness in a range of 2 to 20 μm and (B) a low refractivity layer which comprises porous silica and a polysiloxane-based polymer and has a refractive index in a range of 1.30 to 1.45 and a thickness in a range of 40 to 200 nm, layers (A) and (B) being successively laminated at least on one face of a substrate film. The film exhibits an excellent property for preventing reflection of light and excellent scratch resistance and can be produced at a low cost.

REFERENCES:
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patent: 6436541 (2002-08-01), Sopko et al.
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patent: 6502943 (2003-01-01), Nakamura et al.
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patent: 20020127408 (2002-09-01), Nishida et al.
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patent: 20020187324 (2002-12-01), Shoshi et al.
patent: 20030118532 (2003-06-01), Taniguchi et al.

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