Decorative surface and a method of producing it

Details Decorative surface and a method of producing it Decorative surface and a method of producing it

1987-07-06

1991-03-12

Arnold, Bruce Y.

350 36, G02B 532, G03H 102

Patent

active

049987852

ABSTRACT:
A material has a reflective surface which bears a light diffracting pattern in the form of a series of well-defined grooves and ridges, wherein the transverse cross-section of the surface has a non-cyclical sequence of peaks and troughs. The pattern is produced by a method involving the interference of a first reference beam of coherent light with a second beam of coherent light, the second beam consisting of a bundle of divergent beams all of which illuminate the same area as the first beam. Apparatus for this method has a special lens system for producing the second beam.

REFERENCES:
patent: 3619021 (1971-11-01), Biedermann et al.
patent: 4094575 (1978-06-01), Kellie

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