Patent ID: 6076933
Filing Date: 2000-06-20
Classification: C03C,G02B,G03B

Abstract:
A light filter, comprising:a layer of opaque binder having a front surface and a back surface, the front surface and the back surface being substantially parallel;a plurality of light transmissive beads supported in a single-layer array in the layer of opaque binder with portions of the beads protruding through the back surface of said layer of opaque binder to receive light and contacting the front surface of said layer of opaque binder for transmitting the light through the layer of opaque binder; anda first layer of light transmissive material affixed to the front surface of the layer of opaque binder, and having focal points well in front of focal points of the beads in order to further filter the light transmitted through the layer of opaque binder while avoiding magnification of the beads.