JPS53142203A - Focus servoodevice for optical information reader - Google Patents

Focus servoodevice for optical information reader

Info

Publication number
JPS53142203A
JPS53142203A JP5742977A JP5742977A JPS53142203A JP S53142203 A JPS53142203 A JP S53142203A JP 5742977 A JP5742977 A JP 5742977A JP 5742977 A JP5742977 A JP 5742977A JP S53142203 A JPS53142203 A JP S53142203A
Authority
JP
Japan
Prior art keywords
servoodevice
focus
optical information
information reader
reader
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
JP5742977A
Other languages
Japanese (ja)
Inventor
Fumitaka Kotaka
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP5742977A priority Critical patent/JPS53142203A/en
Priority to CA302,834A priority patent/CA1131361A/en
Priority to US05/904,117 priority patent/US4290132A/en
Priority to GB18388/78A priority patent/GB1601275A/en
Priority to DE2820482A priority patent/DE2820482C2/en
Priority to NLAANVRAGE7805016,A priority patent/NL177259B/en
Priority to FR7814069A priority patent/FR2390749A1/en
Publication of JPS53142203A publication Critical patent/JPS53142203A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
JP5742977A 1977-05-11 1977-05-18 Focus servoodevice for optical information reader Pending JPS53142203A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP5742977A JPS53142203A (en) 1977-05-18 1977-05-18 Focus servoodevice for optical information reader
CA302,834A CA1131361A (en) 1977-05-11 1978-05-08 Focus servo device for use in optical read-out device of information
US05/904,117 US4290132A (en) 1977-05-11 1978-05-08 Focus servo device for use in an optical information read-out device
GB18388/78A GB1601275A (en) 1977-05-11 1978-05-09 Focus servo apparatus for use in an optical information reading system
DE2820482A DE2820482C2 (en) 1977-05-11 1978-05-10 Device for focusing an optical readout system
NLAANVRAGE7805016,A NL177259B (en) 1977-05-11 1978-05-10 AUTOMATIC DEVICE FOR USE IN AN OPTICAL INFORMATION READING SYSTEM.
FR7814069A FR2390749A1 (en) 1977-05-11 1978-05-11 FOCUSING APPARATUS OF AN INFORMATION READING ASSEMBLY

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5742977A JPS53142203A (en) 1977-05-18 1977-05-18 Focus servoodevice for optical information reader

Publications (1)

Publication Number Publication Date
JPS53142203A true JPS53142203A (en) 1978-12-11

Family

ID=13055403

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5742977A Pending JPS53142203A (en) 1977-05-11 1977-05-18 Focus servoodevice for optical information reader

Country Status (1)

Country Link
JP (1) JPS53142203A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814236U (en) * 1981-07-21 1983-01-28 赤井電機株式会社 optical pickup device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814236U (en) * 1981-07-21 1983-01-28 赤井電機株式会社 optical pickup device

Similar Documents

Publication Publication Date Title
JPS5489705A (en) Optical reader
GB2018483B (en) Optical information reading device
GB2025110B (en) Optical information reading out apparatus
JPS51141651A (en) Optical beam information reader
GB2000612B (en) Optical reader for information discs equipped with means for automatic access to the information
GB2053553B (en) Optical information processor
JPS53135347A (en) Focus changeable optical system
JPS5592973A (en) Optical mark reader
MY8500781A (en) Optical recording blank
JPS5484437A (en) Optical data memory
GB2015770B (en) Optical information record
JPS5665272A (en) Optical reader for barrcode label
JPS53111228A (en) Optical reader
GB2050663B (en) Optical card reader
JPS53118103A (en) Optical radiation reflection type information carrier reader
JPS5422130A (en) Optical reader
GB2008794B (en) Optical focusing system
JPS53142203A (en) Focus servoodevice for optical information reader
JPS5376805A (en) Optical information reader
JPS53123103A (en) Optical information reader
GB2013887B (en) Optical image accousto-electric reading device
JPS53139508A (en) Focus servoodevice for optial information reader
JPS5313905A (en) Optical information reader
JPS53116805A (en) Optical information reader
JPS5425703A (en) Optical information reader