Light source device to be utilized mainly for projection purpose

Details Light source device to be utilized mainly for projection purpose Light source device to be utilized mainly for projection purpose

1976-02-10

1978-01-24

Demeo, Palmer C.

Electric lamp and discharge devices

Plural unit

313222, 339 52R, 339 57, 362225, F21V 2108, H01K 124, H01K 142, H01R 3308

Patent

active

040705943

ABSTRACT:
The present invention discloses a light source device to be utilized mainly for projection purposes in which a plurality of light-emitting sections and a plurality of non-light-emitting sections are alternately connected. Each light emitting section consisting of a halogen lamp comprising a lamp tube made of quartz and enclosing a coiled filament as a single light emitting element and sealing therein inert gas and halogen while the non-light-emitting section consisting of a supporting member for supporting the halogen lamp, the halogen lamps being electrically interconnected in series.

REFERENCES:
patent: RE12907 (1909-01-01), Beuttell
patent: 940021 (1909-11-01), Howard et al.
patent: 1995863 (1935-03-01), Prideaux
patent: 2886629 (1959-05-01), Van Geel
patent: 3549933 (1970-12-01), Smalley et al.
patent: 3633023 (1972-01-01), Castiglioni
patent: 3634722 (1972-01-01), Palmer et al.

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