Light source device

Details Light source device Light source device

1992-02-10

1992-11-10

Dority, Carroll B.

Illumination

Elongated source light unit or support

With or including transparent or translucent member

362268, 362307, 362311, F21S 300

Patent

active

051618800

ABSTRACT:
A light source device comprises a lamp having a bar-shaped luminous body, a lamp housing having lamp supporting portions, a reflective curved interior surface for reflecting light from the lamp and an opening, and a light transmitting plate member which is composed of a lamination structure including a first diffusing plate, a linear Fresnel lens plate on which a plurality of striations are formed to extend in parallel with one another in a direction along the bar-shaped luminous body of the lamp and a second diffusing plate arranged in order, and attached to the lamp housing to be opposite to the reflective curved interior surface with the lamp between for covering the opening.

REFERENCES:
patent: 3083294 (1963-03-01), Irland et al.

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