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
GB1242529A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Priority to GB1242529ApriorityCriticalpatent/GB330075A/en
Publication of GB330075ApublicationCriticalpatent/GB330075A/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
G03B21/10—Projectors with built-in or built-on screen
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Optical Couplings Of Light Guides
(AREA)
Abstract
330,075. Wood, F. G. April 22, 1929. Drawings to Specification. Optical-projection apparatus comprising three units on independent mounts which can be fitted together., has a reflection polarizer on the centre reversible mount, on another mount a condenser system, and on the third mount another condenser system, the object in an adjustable carrier, a projecting lens and an analyzing prism.
GB1242529A1929-04-221929-04-22Improvements in polarized light apparatus
ExpiredGB330075A
(en)