GB506965A - An optical system for use in recording or reproducing sound on film - Google Patents

An optical system for use in recording or reproducing sound on film

Info

Publication number
GB506965A
GB506965A GB18646/38A GB1864638A GB506965A GB 506965 A GB506965 A GB 506965A GB 18646/38 A GB18646/38 A GB 18646/38A GB 1864638 A GB1864638 A GB 1864638A GB 506965 A GB506965 A GB 506965A
Authority
GB
United Kingdom
Prior art keywords
optical system
lens
recording
film
lenses
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
GB18646/38A
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB506965A publication Critical patent/GB506965A/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)

Abstract

506,965. Optical systems. KODAK, Ltd. June 23, 1938, No. 18646. Convention date, July 16, 1937, [Class 97 (i)] An optical system for reproducing or recording sound on film includes an aspherical or cylindrical lens having a non-circular periphery and carried in a tubular mount having internal recesses or abutments to determine the axial position of the lens. As shown, lenses 13, 14, 16 of rectangular shape, are held by spring diaphragms 19, 20, 23 in recesses in a tube of rectangular cross-section having two tapering walls 11, 12 and two parallel walls. Such a system produces a line of light 17 from a source 7. In a modification, the lens 16 may be omitted. The lenses may be made by moulding.
GB18646/38A 1937-07-16 1938-06-23 An optical system for use in recording or reproducing sound on film Expired GB506965A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US506965XA 1937-07-16 1937-07-16

Publications (1)

Publication Number Publication Date
GB506965A true GB506965A (en) 1939-06-07

Family

ID=21966828

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18646/38A Expired GB506965A (en) 1937-07-16 1938-06-23 An optical system for use in recording or reproducing sound on film

Country Status (1)

Country Link
GB (1) GB506965A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2304920A (en) * 1995-09-01 1997-03-26 Keymed Optical instrument with an anti-backlash focusing mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2304920A (en) * 1995-09-01 1997-03-26 Keymed Optical instrument with an anti-backlash focusing mechanism
US5818648A (en) * 1995-09-01 1998-10-06 Keymed Medical & Industrial Equipment, Ltd. Optical instrument with an anti-backlash focusing mechanism
GB2304920B (en) * 1995-09-01 1999-02-24 Keymed Optical instrument with an anti-backlash focusing mechanism

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