GB366643A - Improvements in or relating to optical sound reproducing apparatus - Google Patents

Improvements in or relating to optical sound reproducing apparatus

Info

Publication number
GB366643A
GB366643A GB3647930A GB3647930A GB366643A GB 366643 A GB366643 A GB 366643A GB 3647930 A GB3647930 A GB 3647930A GB 3647930 A GB3647930 A GB 3647930A GB 366643 A GB366643 A GB 366643A
Authority
GB
United Kingdom
Prior art keywords
opening
reproducing apparatus
optical sound
slides
relating
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
GB3647930A
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.)
NITZSCHE AG
Original Assignee
NITZSCHE AG
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 NITZSCHE AG filed Critical NITZSCHE AG
Priority to GB3647930A priority Critical patent/GB366643A/en
Publication of GB366643A publication Critical patent/GB366643A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor

Landscapes

  • Optical Couplings Of Light Guides (AREA)

Abstract

366,643. Optical sound-reproducing apparatus. SOKAL, S., 1, Great James Street, Bedford Row, London.-(Nitzsche Akt.-Ges. ; 1, Karlstrasse, Leipsic, Germany.) Dec. 3, 1930, No. 36479. [Class 40 (ii).] Optical sound-reproducing apparatus comprises a fixed guide surface 5 for the sound film, an opening 6 therein for the passage of light on to a selenium cell or photo-electric cell 7, and two slides 20 mounted behind the opening so as to be adjustable independently of one another to allow any desired part of the opening to be covered or left free. The slides may be in the form of levers 20 pivoted on opposite sides of the opening 6. The end of each slide is disposed between a spring 27 and a pin 26, and is adjustable by a set-screw 25. The light passes from a source 1 through a lens system 2 which includes a screen 3.
GB3647930A 1930-12-03 1930-12-03 Improvements in or relating to optical sound reproducing apparatus Expired GB366643A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3647930A GB366643A (en) 1930-12-03 1930-12-03 Improvements in or relating to optical sound reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3647930A GB366643A (en) 1930-12-03 1930-12-03 Improvements in or relating to optical sound reproducing apparatus

Publications (1)

Publication Number Publication Date
GB366643A true GB366643A (en) 1932-02-11

Family

ID=10388531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3647930A Expired GB366643A (en) 1930-12-03 1930-12-03 Improvements in or relating to optical sound reproducing apparatus

Country Status (1)

Country Link
GB (1) GB366643A (en)

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