JPS54135505A - Lens support structure - Google Patents

Lens support structure

Info

Publication number
JPS54135505A
JPS54135505A JP4304178A JP4304178A JPS54135505A JP S54135505 A JPS54135505 A JP S54135505A JP 4304178 A JP4304178 A JP 4304178A JP 4304178 A JP4304178 A JP 4304178A JP S54135505 A JPS54135505 A JP S54135505A
Authority
JP
Japan
Prior art keywords
tubular body
highly accurately
constitution
supporting
lens
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.)
Pending
Application number
JP4304178A
Other languages
Japanese (ja)
Inventor
Takahisa Aikawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4304178A priority Critical patent/JPS54135505A/en
Publication of JPS54135505A publication Critical patent/JPS54135505A/en
Pending 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To position a lens highly accurately and stably with a simple constitution by coaxially and elastically supporting the two points at the intermediate of a tubular body disposed with an electromagnetic coil at the bottom end part to a supporting tubular body by means of elastic bodies. CONSTITUTION:The magnetic pole 14b of the side disposed on the outside circumference of a tubular body 11 is extended so as to encircle the tubular body 11 to form a supporting tubular body 17 and further the tubular body 11 is secured and held by means of elastic supports 16a, 16b at a spacing distance of, e.g., about the same as the diameter of the tubular body 11 to insure the stability of neighborhood of the bottom side. Namely, the outside circumferential part of the elastic support 16b is secured to the flange body 17a provided to the support tubular body 17 with its one end being protruded to the inner side. Since such constitution causes the axial alignment of the tubular body 11 to the magnet 14 to be accomplished highly accurately, lateral vibrations are prevented even at the moving of the tubular body 11 by energizing of an electromagnetic coil 13, thus the lens is positioned highly accurately and stably.
JP4304178A 1978-04-12 1978-04-12 Lens support structure Pending JPS54135505A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4304178A JPS54135505A (en) 1978-04-12 1978-04-12 Lens support structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4304178A JPS54135505A (en) 1978-04-12 1978-04-12 Lens support structure

Publications (1)

Publication Number Publication Date
JPS54135505A true JPS54135505A (en) 1979-10-20

Family

ID=12652813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4304178A Pending JPS54135505A (en) 1978-04-12 1978-04-12 Lens support structure

Country Status (1)

Country Link
JP (1) JPS54135505A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039836A2 (en) * 1980-05-12 1981-11-18 Northern Telecom Limited A scanning head for an optical disc system
EP0058018A1 (en) * 1981-01-30 1982-08-18 Sony Corporation Reading information optically
FR2513391A1 (en) * 1981-09-22 1983-03-25 Mansei Kogyo Kk FOCUSING LENS OPERATION DEVICE
JPS6427038A (en) * 1987-07-23 1989-01-30 Mitsubishi Electric Corp Voice coil type actuator
US5675445A (en) * 1994-01-20 1997-10-07 Nikon Corporation Lens barrel having optical systems which can be individually installed in corresponding lens frames and method of installing the optical systems

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039836A2 (en) * 1980-05-12 1981-11-18 Northern Telecom Limited A scanning head for an optical disc system
EP0039836A3 (en) * 1980-05-12 1982-05-19 Northern Telecom Limited A scanning head for an optical disc system
EP0058018A1 (en) * 1981-01-30 1982-08-18 Sony Corporation Reading information optically
FR2513391A1 (en) * 1981-09-22 1983-03-25 Mansei Kogyo Kk FOCUSING LENS OPERATION DEVICE
JPS6427038A (en) * 1987-07-23 1989-01-30 Mitsubishi Electric Corp Voice coil type actuator
US5675445A (en) * 1994-01-20 1997-10-07 Nikon Corporation Lens barrel having optical systems which can be individually installed in corresponding lens frames and method of installing the optical systems

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