Exposure device with filter

Details Exposure device with filter Exposure device with filter

1990-04-20

1991-05-21

Husar, Stephen F.

Illumination

Multiple filament light unit

362217, 362263, 362293, 313112, 313273, F21V 900, F21S 300

Patent

active

050180541

ABSTRACT:
An exposure device has a bar-like lamp with a filament having luminescent and non-luminescent members connected in alternating series. A filter is disposed in the vicinity of the lamp and is composed of a plurality of filter plates arranged in a longitudinal direction of the filament. Seams between the filter plates are positioned vis-a-vis with the non-luminescent members of the filament of the lamp to reduce disturbances by the seams to the light emerging from lamp.

REFERENCES:
patent: 3188513 (1965-06-01), Hansler
patent: 3295007 (1966-12-01), Young
patent: 3449045 (1969-06-01), Roul
patent: 3943395 (1976-03-01), Huston et al.
patent: 4626791 (1986-11-01), Combastel
patent: 4959586 (1990-09-01), Claessers et al.

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