Illumination device

Details Illumination device Illumination device

1988-09-28

1989-07-25

Lazarus, Ira S.

Illumination

Elongated source light unit or support

Housing

362297, 362301, 362346, 355 67, G03B 2754

Patent

active

048519758

ABSTRACT:
An illumination device for use in a slit exposure system for illuminating a document located on a document table. The illumination device has a light source with an elongated shape and a reflector surrounding a portion of the periphery of the light source and designed to reflect a light emitted from the light source toward the document. The reflector has a plurality of cylindrical reflecting surfaces. Each of the surfaces is designed to reflect while collimating a light virtually emitted from a linear area to be illuminated on the document table toward the light source, assuming that a line from which the light is emitted is located on the linear area.

REFERENCES:
patent: 3982116 (1976-09-01), Sakuma
patent: 4295186 (1981-10-01), Sugiura et al.
patent: 4375331 (1983-03-01), Tohyama et al.
patent: 4518249 (1985-05-01), Murata et al.
patent: 4733280 (1988-03-01), Izie

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