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.)
Expired
Application number
GB1505157A
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Individual
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Individual
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Publication of GB814576ApublicationCriticalpatent/GB814576A/en
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
G03B21/2013—Plural light sources
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Projection Apparatus
(AREA)
Non-Portable Lighting Devices Or Systems Thereof
(AREA)
Abstract
814,576. Kinematograph projectors. GLENN, A. June 6, 1957 [May 13, 1957], No. 15051/57. Class 97(1) A film gate is illuminated by two lamphouses, the beams from which are combined by internal reflection in a prism to form a single beam. Each lamphouse shown comprises a lamp F with reflector G and condenser H. Each beam enters one face of a prism A and is totally reflected at the adjacent face, both beams emerging through the base C to illuminate the gate B. A further condenser may be inserted between the prism and the gate.
GB1505157A1957-05-13Cinematograph projector illumination unit
ExpiredGB814576A
(en)
Procedure for the projection of fixed real images, on other variables of a cinematographic type (Machine-translation by Google Translate, not legally binding)
Improvements in the construction of fixed view projectors for opaque and transparent bodies (Machine-translation by Google Translate, not legally binding)
Cinematºgrafo of toy to see to the light or projected on the screen, films photographic or of drawings (Machine-translation by Google Translate, not legally binding)