GB481461A - Improvements in or relating to photo-sound recording - Google Patents

Improvements in or relating to photo-sound recording

Info

Publication number
GB481461A
GB481461A GB5170/37A GB517037A GB481461A GB 481461 A GB481461 A GB 481461A GB 5170/37 A GB5170/37 A GB 5170/37A GB 517037 A GB517037 A GB 517037A GB 481461 A GB481461 A GB 481461A
Authority
GB
United Kingdom
Prior art keywords
lens
screen
film
mirror
light
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
GB5170/37A
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.)
Klangfilm GmbH
Original Assignee
Klangfilm GmbH
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 Klangfilm GmbH filed Critical Klangfilm GmbH
Publication of GB481461A publication Critical patent/GB481461A/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
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

481,461. Optical sound - recording. KLANGFILM GES. Feb. 20, 1937, Nos. 5170 and 5171. Convention dates, Feb. 20, 1936 and June 24, 1936. [Class 40 (ii)] [Also in Group XL] In an optical photosound recording apparatus, a transparent reflecting surface is provided in the path of the recording beam in conjunction with an additional optical device in the path of the main beam or the reflected beam so arranged that the real slot and the slot projection on the film are thrown on to a single screen where they can be simultaneously observed. In the form shown in the Figure, light from a source 11 passes lens 12, screen 13, prism 14, light valve 15, '' real " shutter 16, " noiseless " shutter 17, lens 18, transparent mirror 19, and objective 22 on its way to film 25. Part of this light is reflected by mirror 19 to lens 20, and concave mirror 21, and back to screen 24 of observing device 23. Also light from the film passes back through lens 22 and is reflected by mirror 19 to screen 24. To dim the primary image on the screen to the same intensity as the second one coming from the film, the concave mirror 21 is preferably blackened. In other forms, the mirrors 19, 21 and lens 20 of Fig. 1 are replaced by a compound prism, of which various forms are shown.
GB5170/37A 1936-02-20 1937-02-20 Improvements in or relating to photo-sound recording Expired GB481461A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE481461X 1936-02-20

Publications (1)

Publication Number Publication Date
GB481461A true GB481461A (en) 1938-03-11

Family

ID=6542666

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5170/37A Expired GB481461A (en) 1936-02-20 1937-02-20 Improvements in or relating to photo-sound recording

Country Status (1)

Country Link
GB (1) GB481461A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3132290A1 (en) * 1980-08-14 1982-04-08 Universal Pioneer Corp., Tokyo "OPTICAL SYSTEM FOR A SIGNAL COLLECTOR DEVICE"
US4521876A (en) * 1979-10-18 1985-06-04 Victor Company Of Japan, Limited Focusing state monitoring apparatus in optical recording apparatus
US4551827A (en) * 1979-10-26 1985-11-05 Peter A. Custer Fluorescent soundtrack readout system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521876A (en) * 1979-10-18 1985-06-04 Victor Company Of Japan, Limited Focusing state monitoring apparatus in optical recording apparatus
US4551827A (en) * 1979-10-26 1985-11-05 Peter A. Custer Fluorescent soundtrack readout system
DE3132290A1 (en) * 1980-08-14 1982-04-08 Universal Pioneer Corp., Tokyo "OPTICAL SYSTEM FOR A SIGNAL COLLECTOR DEVICE"
US4406520A (en) * 1980-08-14 1983-09-27 Universal Pioneer Corporation Beam splitter optical system of signal pickup device

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