Light-scattering coating, its preparation and use

Details Light-scattering coating, its preparation and use Light-scattering coating, its preparation and use

1993-03-22

1998-03-03

Powell, Mark R.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Light diffusing

359580, 445 58, 501900, H01K 126

Patent

active

057239371

ABSTRACT:
A light-scattering coating comprising light-scattering particles, such as alumina, dispersed in a silica matrix is formed by applying to the filter a silicone solution in which is dispersed colloidal silica and the light-scattering particles to a suitable substrate and then pyrolyzing the dispersion at high temperature to drive off the organic components and form the silica matrix. This coating is hard and abrasion resistant and is useful for reflectors, lamps and lenses.

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