GB688860A - A system for the reproduction of sound from a sound-film track - Google Patents

A system for the reproduction of sound from a sound-film track

Info

Publication number
GB688860A
GB688860A GB2096350A GB2096350A GB688860A GB 688860 A GB688860 A GB 688860A GB 2096350 A GB2096350 A GB 2096350A GB 2096350 A GB2096350 A GB 2096350A GB 688860 A GB688860 A GB 688860A
Authority
GB
United Kingdom
Prior art keywords
sound
track
film
lens
gap
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
GB2096350A
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 Individual filed Critical Individual
Priority to GB2096350A priority Critical patent/GB688860A/en
Publication of GB688860A publication Critical patent/GB688860A/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 Head (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

688,860. Optical sound reproducing. FARSBENDER, J., MOGLICH, F., and ROMPE, R. Aug. 24, 1950, No. 20963/50. Class 40 (ii) [Also in Group XL(b)] In an arrangement for reproducing sound from a film sound track, comprising an optical projection system for directing a beam of light modulated by the track, the photo-electric cell is as described in Specification 678,337, [Group XL(b)], and has vaporized electrodes forming an active gap, of width less than 0.5 mm., on which the light beam passing through the film is focussed. As shown the beam from a lamp 7 is projected by a lens 8 on to the track of the film 9 and focussed by a lens 10 on to the narrow gap between the electrodes 2 of the cell 1. A cylindrical lens 11 is included to enlarge the beam to the length the gap in the direction at right angles to its width, indicated in Fig. 3 (not shown).
GB2096350A 1950-08-24 1950-08-24 A system for the reproduction of sound from a sound-film track Expired GB688860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2096350A GB688860A (en) 1950-08-24 1950-08-24 A system for the reproduction of sound from a sound-film track

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2096350A GB688860A (en) 1950-08-24 1950-08-24 A system for the reproduction of sound from a sound-film track

Publications (1)

Publication Number Publication Date
GB688860A true GB688860A (en) 1953-03-18

Family

ID=10154791

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2096350A Expired GB688860A (en) 1950-08-24 1950-08-24 A system for the reproduction of sound from a sound-film track

Country Status (1)

Country Link
GB (1) GB688860A (en)

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