Lighting fixture with square beam pattern

Details Lighting fixture with square beam pattern Lighting fixture with square beam pattern

1985-09-16

1986-12-30

Cuchlinski, Jr., William A.

Illumination

Light source and modifier

Including reflector

362332, 362374, 362408, F21V 502

Patent

active

046333770

ABSTRACT:
A light-distributing diffuser for an electrical lighting fixture. The diffuser is rectangular in transverse section and is generally in the shape of an inverted truncated pyramid having an enlarged base and a reduced, outwardly-extending end. The outwardly extending end of the truncated pyramid is surmounted by a vaulted, quadri-faceted cap. The walls of the diffuser are formed with an array of fluted, groove-like channels extending longitudinally along the side and including arrays having channels of lesser and of greater radii of transverse curvature, the arrays being disposed symmetrically with respect to a longitudinally extending center line of each side. The cap is formed on each of four side-connected triangular panels thereof with a pair of laterally-adjacent arrays of fluted channels angled to converge and to intersect along a center line of each panel and along abutting side edges of said panels, to direct illumination diagonally and to achieve an essentially rectangular beam light pattern.

REFERENCES:
patent: 4285034 (1981-08-01), Sullivan
patent: 4323954 (1982-04-01), Florence et al.
patent: 4462068 (1984-07-01), Shadwick

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