Elongated lamp

Details Elongated lamp Elongated lamp

1991-12-05

1993-03-23

Husar, Stephen F.

Illumination

Elongated source light unit or support

With or including transparent or translucent member

362299, 362329, 362340, F21S 300

Patent

active

051958180

ABSTRACT:
The lamp has a case with a light exit opening. A reflector is arranged on the rear wall of the case facing the light exit opening, in front of which an elongated light source is arranged. Between the light source and the light exit opening there is a flexible optical film, stable in shape, with a smooth surface and a structured surface. The smooth surface faces the light exit opening, while the structured surface is directed toward the light source. The structure consists of a plurality of V-shaped grooves extending in parallel to each other and transverse to the longitudinal extension of the light source, the grooves lying immediately side by side. The optical film extends only in that area in which the light source emits light directly toward the light exit opening.

REFERENCES:
patent: 2175067 (1939-10-01), Rolph
patent: 4120565 (1978-10-01), Rabl et al.
patent: 4154219 (1979-05-01), Gupta et al.
patent: 4242723 (1980-12-01), Fabbri et al.
patent: 4260220 (1981-04-01), Whitehead
patent: 4615579 (1986-10-01), Whitehead
patent: 4805984 (1989-02-01), Cobb, Jr.
patent: 4834495 (1989-05-01), Whitehead et al.
patent: 4850665 (1989-07-01), Whitehead
patent: 4874228 (1989-10-01), Aho et al.
patent: 4906070 (1990-03-01), Cobb, Jr.

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