JPS59109019A - 光デイスク用対物レンズ - Google Patents

光デイスク用対物レンズ

Info

Publication number
JPS59109019A
JPS59109019A JP21890682A JP21890682A JPS59109019A JP S59109019 A JPS59109019 A JP S59109019A JP 21890682 A JP21890682 A JP 21890682A JP 21890682 A JP21890682 A JP 21890682A JP S59109019 A JPS59109019 A JP S59109019A
Authority
JP
Japan
Prior art keywords
lens
group
positive
focal length
negative meniscus
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
JP21890682A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6161084B2 (enrdf_load_stackoverflow
Inventor
Takahiro Sugiyama
孝浩 杉山
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP21890682A priority Critical patent/JPS59109019A/ja
Publication of JPS59109019A publication Critical patent/JPS59109019A/ja
Publication of JPS6161084B2 publication Critical patent/JPS6161084B2/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)
JP21890682A 1982-12-14 1982-12-14 光デイスク用対物レンズ Granted JPS59109019A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21890682A JPS59109019A (ja) 1982-12-14 1982-12-14 光デイスク用対物レンズ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21890682A JPS59109019A (ja) 1982-12-14 1982-12-14 光デイスク用対物レンズ

Publications (2)

Publication Number Publication Date
JPS59109019A true JPS59109019A (ja) 1984-06-23
JPS6161084B2 JPS6161084B2 (enrdf_load_stackoverflow) 1986-12-24

Family

ID=16727161

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21890682A Granted JPS59109019A (ja) 1982-12-14 1982-12-14 光デイスク用対物レンズ

Country Status (1)

Country Link
JP (1) JPS59109019A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6161084B2 (enrdf_load_stackoverflow) 1986-12-24

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