FR827404A - Optical device for sound film - Google Patents

Optical device for sound film

Info

Publication number
FR827404A
FR827404A FR827404DA FR827404A FR 827404 A FR827404 A FR 827404A FR 827404D A FR827404D A FR 827404DA FR 827404 A FR827404 A FR 827404A
Authority
FR
France
Prior art keywords
optical device
sound film
sound
film
optical
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
Other languages
French (fr)
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.)
Julius Pintsch AG
Original Assignee
Julius Pintsch 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 Julius Pintsch AG filed Critical Julius Pintsch AG
Application granted granted Critical
Publication of FR827404A publication Critical patent/FR827404A/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
FR827404D 1936-10-02 1937-10-01 Optical device for sound film Expired FR827404A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE827404X 1936-10-02

Publications (1)

Publication Number Publication Date
FR827404A true FR827404A (en) 1938-04-26

Family

ID=6748007

Family Applications (1)

Application Number Title Priority Date Filing Date
FR827404D Expired FR827404A (en) 1936-10-02 1937-10-01 Optical device for sound film

Country Status (1)

Country Link
FR (1) FR827404A (en)

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