Cone shaped Fresnel reflector

Details Cone shaped Fresnel reflector Cone shaped Fresnel reflector

1987-02-20

1988-12-06

Hart, Douglas

Illumination

Light modifier

Reflector

350613, F21V 700, G02B 508

Patent

active

047899212

ABSTRACT:
A Fresnel-type reflector having the physical shape of a cone. In a preferred embodiment, the reflector is made by forming a reflective coating on a structured surface of a thin flexible film and forming the film into the shape of a cone. The structures on the surface are designed to cause the reflector to imitate the optical properties of a parabolic reflector when the reflector of the invention is formed into the shape of a cone.

REFERENCES:
patent: 1976163 (1934-10-01), Exelmans
patent: 3523721 (1970-08-01), Hofmann
patent: 4350412 (1982-09-01), Steenblik
patent: 4418379 (1983-11-01), DeMarsh

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