Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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Publication date
Application filed by Zeiss Ikon AGfiledCriticalZeiss Ikon AG
Application grantedgrantedCritical
Publication of FR1173433ApublicationCriticalpatent/FR1173433A/fr
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/14—Details
G03B21/20—Lamp housings
G03B21/2006—Lamp housings characterised by the light source
G03B21/2026—Gas discharge type light sources, e.g. arcs
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR1173433D1956-03-311957-03-29Dispositif d'éclairage pour appareils de projection
ExpiredFR1173433A
(fr)