GB367867A - Device for the projection of transparencies - Google Patents

Device for the projection of transparencies

Info

Publication number
GB367867A
GB367867A GB25609/30A GB2560930A GB367867A GB 367867 A GB367867 A GB 367867A GB 25609/30 A GB25609/30 A GB 25609/30A GB 2560930 A GB2560930 A GB 2560930A GB 367867 A GB367867 A GB 367867A
Authority
GB
United Kingdom
Prior art keywords
lens
projection
transparency
optical
nicol prism
Prior art date
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
GB25609/30A
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.)
FREDERIC LEHNHOFF WYLD
Original Assignee
FREDERIC LEHNHOFF WYLD
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 FREDERIC LEHNHOFF WYLD filed Critical FREDERIC LEHNHOFF WYLD
Publication of GB367867A publication Critical patent/GB367867A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • 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
    • G03B35/00—Stereoscopic photography
    • G03B35/18—Stereoscopic photography by simultaneous viewing
    • G03B35/20—Stereoscopic photography by simultaneous viewing using two or more projectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

367,867. Optical-projection apparatus. WYLD, F. LEHNHOFF-, 8, Avenue Eugenie, St-Cloud, Seine-et-Oise, France. Aug. 27, 1930, No. 25609. Convention date, May 3, 1930. [Class 97 (i).] In an optical-projection system stated to produce colour and stereoscopic effects the transparency is illuminated by polarized light and a second polarizer such as a Nicol prism is positioned between the transparency and the projection lens. The optical system comprises a lamp 1, a hemispherical condenser 2, a diaphragm 3, a Nicol prism 4, a lens 5, the transparency 6, a second Nicol prism 7 and a projection lens 8. The lamp may have a number of parallel filaments. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a lens stated to be changed into a dispersing lens by the addition of one or more opaque bands near the periphery, lenses in which the distance between the components is changed by micrometer screws, and a condenser provided with a network or slots. This subject-matter does not appear in the Specification as accepted.
GB25609/30A 1930-05-03 1930-08-27 Device for the projection of transparencies Expired GB367867A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR367867X 1930-05-03

Publications (1)

Publication Number Publication Date
GB367867A true GB367867A (en) 1932-02-29

Family

ID=8894437

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25609/30A Expired GB367867A (en) 1930-05-03 1930-08-27 Device for the projection of transparencies

Country Status (1)

Country Link
GB (1) GB367867A (en)

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