Reflector for lighting and/or indicator devices especially for v

Details Reflector for lighting and/or indicator devices especially for v Reflector for lighting and/or indicator devices especially for v

1978-11-07

1981-04-21

Griffin, Donald A.

Illumination

Light source and modifier

Including selected wavelength modifier

362309, 362327, 362340, F21V 502, F21V 1302

Patent

active

042636418

ABSTRACT:
The reflector has a transparent body in the form of a paraboloid with a light source located within the reflector along the axis of symmetry. The inner surface of the reflector has a plurality of circular ridges of generally triangular cross-section, each ridge being defined by a cylindrical surface portion the axis of which is coincident with the axis of symmetry and by a frusto-conical surface portion adjacent to said cylindrical portion which lies on a cone having its axis coincident with said axis of symmetry with each of the cones having a common apex located approximately at the center of said light source.

REFERENCES:
patent: 1570503 (1926-01-01), Kralicek
patent: 2015235 (1935-09-01), Rolph
patent: 2686255 (1954-08-01), Pascucci
patent: 3527974 (1970-09-01), Cooper

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