JPS5986019A - 光磁気デイスク記録及び再生用対物レンズ - Google Patents

光磁気デイスク記録及び再生用対物レンズ

Info

Publication number
JPS5986019A
JPS5986019A JP19521182A JP19521182A JPS5986019A JP S5986019 A JPS5986019 A JP S5986019A JP 19521182 A JP19521182 A JP 19521182A JP 19521182 A JP19521182 A JP 19521182A JP S5986019 A JPS5986019 A JP S5986019A
Authority
JP
Japan
Prior art keywords
lens
biconvex
group
light source
source side
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.)
Granted
Application number
JP19521182A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6327683B2 (enrdf_load_stackoverflow
Inventor
Yoji Kubota
洋治 久保田
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.)
Nidec Instruments Corp
Original Assignee
Sankyo Seiki Manufacturing 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 Sankyo Seiki Manufacturing Co Ltd filed Critical Sankyo Seiki Manufacturing Co Ltd
Priority to JP19521182A priority Critical patent/JPS5986019A/ja
Publication of JPS5986019A publication Critical patent/JPS5986019A/ja
Publication of JPS6327683B2 publication Critical patent/JPS6327683B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP19521182A 1982-11-09 1982-11-09 光磁気デイスク記録及び再生用対物レンズ Granted JPS5986019A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19521182A JPS5986019A (ja) 1982-11-09 1982-11-09 光磁気デイスク記録及び再生用対物レンズ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19521182A JPS5986019A (ja) 1982-11-09 1982-11-09 光磁気デイスク記録及び再生用対物レンズ

Publications (2)

Publication Number Publication Date
JPS5986019A true JPS5986019A (ja) 1984-05-18
JPS6327683B2 JPS6327683B2 (enrdf_load_stackoverflow) 1988-06-03

Family

ID=16337301

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19521182A Granted JPS5986019A (ja) 1982-11-09 1982-11-09 光磁気デイスク記録及び再生用対物レンズ

Country Status (1)

Country Link
JP (1) JPS5986019A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6327683B2 (enrdf_load_stackoverflow) 1988-06-03

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