Optical: systems and elements – Glare or unwanted light reduction – Directional or angular discrimination
Reexamination Certificate
2005-09-06
2005-09-06
Dunn, Drew A. (Department: 2872)
Optical: systems and elements
Glare or unwanted light reduction
Directional or angular discrimination
C359S614000, C359S454000
Reexamination Certificate
active
06939014
ABSTRACT:
An optical filter includes an array of light-transmissive beads in a matrix of light absorbing binder that surrounds one portion of the beads to provide light entrances and exit apertures for incident light to pass substantially only through the beads. A transparent layer under the light absorbing layer may serve to increase the diameter of the exit apertures. A structure or layer of light-dispersing material that exhibits anisotropic dispersion of incident light along orthogonal axes is disposed relative to the beads to disperse light within a wider output angle along one of the orthogonal axes than along another of the orthogonal axes.
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Vance Dennis W.
Wolfe Charles Robert
Dunn Drew A.
Fenwick & West LLP
Jenmar Visual Systems, Inc.
Pritchett Joshua L
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