Optical filter

Details Optical filter Optical filter

2005-02-01

2005-02-01

Seidleck, James J. (Department: 1711)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

C428S480000, C428S412000, C428S522000, C428S519000, C428S478200

Reexamination Certificate

active

06849327

ABSTRACT:
An optical filter comprising a filter layer absorbing visible light, a transparent support, in particular a transparent support comprising a biaxially stretched film, and an antireflection layer, with which an image display such as a plasma display is equipped for preventing reflection and improving color reproduction. An optical filter comprising a transparent support having provided at least on one side of the support a filter layer containing a dye and a polymer binder, wherein an antireflection layer having an antireflection property to visible light is provided on the side opposite to the side on which the filter layer is provided when the filter layer is provided on either one side, and the antireflection layer is provided on either one side when the filter layers are provided on both sides, and the transparent support comprises a biaxially stretched film having a thickness of from 10 to 500 μm.

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