GB2129931B - Apparatus for detecting position of optical pick-up - Google Patents

Apparatus for detecting position of optical pick-up

Info

Publication number
GB2129931B
GB2129931B GB08231479A GB8231479A GB2129931B GB 2129931 B GB2129931 B GB 2129931B GB 08231479 A GB08231479 A GB 08231479A GB 8231479 A GB8231479 A GB 8231479A GB 2129931 B GB2129931 B GB 2129931B
Authority
GB
United Kingdom
Prior art keywords
optical pick
detecting position
detecting
pick
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
GB08231479A
Other versions
GB2129931A (en
Inventor
Shigeo Kubota
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to GB08231479A priority Critical patent/GB2129931B/en
Publication of GB2129931A publication Critical patent/GB2129931A/en
Application granted granted Critical
Publication of GB2129931B publication Critical patent/GB2129931B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/10—Bifocal lenses; Multifocal lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/40—Optical focusing aids
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • 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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Recording Or Reproduction (AREA)
GB08231479A 1982-11-04 1982-11-04 Apparatus for detecting position of optical pick-up Expired GB2129931B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08231479A GB2129931B (en) 1982-11-04 1982-11-04 Apparatus for detecting position of optical pick-up

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08231479A GB2129931B (en) 1982-11-04 1982-11-04 Apparatus for detecting position of optical pick-up

Publications (2)

Publication Number Publication Date
GB2129931A GB2129931A (en) 1984-05-23
GB2129931B true GB2129931B (en) 1986-02-19

Family

ID=10534023

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08231479A Expired GB2129931B (en) 1982-11-04 1982-11-04 Apparatus for detecting position of optical pick-up

Country Status (1)

Country Link
GB (1) GB2129931B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2609817B1 (en) * 1987-01-21 1989-05-05 Matra METHOD AND DEVICE FOR SHOOTING WITH A LARGE DEPTH OF FIELD
GB9028215D0 (en) * 1990-12-31 1991-02-13 Smiths Industries Plc Electro-optic apparatus
JPH05173087A (en) * 1991-06-26 1993-07-13 Asahi Optical Co Ltd Automatic focus scanning type optical device
KR0179138B1 (en) * 1995-12-01 1999-04-15 구자홍 Objective lens

Also Published As

Publication number Publication date
GB2129931A (en) 1984-05-23

Similar Documents

Publication Publication Date Title
EP0112463A3 (en) Apparatus for detecting the position of moving member
DE3267548D1 (en) Process and device for an automatic optical inspection
GB8332416D0 (en) Optical position location apparatus
GB8313707D0 (en) Apparatus for determining type of tape
GB2130365B (en) Optical magnetic-field measuring apparatus
DE3373546D1 (en) Optical rotation detecting apparatus
EP0111866A3 (en) Apparatus for magnetically detecting positions
GB8334199D0 (en) Optical pickup device
GB2142433B (en) Apparatus for detecting micr-organisms
JPS5745513A (en) Device for displacing tray of optical machine
DE3361734D1 (en) Device for the automatic optical testing of quality
GB2122383B (en) Optical reproducing apparatus
GB8416151D0 (en) Optical pickup apparatus
GB2119598B (en) Optical image sensor apparatus
GB2200010B (en) Focus detection apparatus for camera
GB8322638D0 (en) Automatic measurement/compensation apparatus
GB2115579B (en) Optical reproducing apparatus
DE3479935D1 (en) Apparatus for detecting a focusing state of an optical system
DE3369413D1 (en) Optical disk apparatus
GB8303076D0 (en) Detecting apparatus
JPS57154031A (en) Support apparatus for inspecting contact lens
GB2117112B (en) Optical multi-ray gas-detecting apparatus
GB2113817B (en) Optical apparatus
EP0291312A3 (en) Distance measurement apparatus for camera
GB8313496D0 (en) Optical measuring apparatus

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19931104