JPS6331766B2 - - Google Patents

Info

Publication number
JPS6331766B2
JPS6331766B2 JP59240280A JP24028084A JPS6331766B2 JP S6331766 B2 JPS6331766 B2 JP S6331766B2 JP 59240280 A JP59240280 A JP 59240280A JP 24028084 A JP24028084 A JP 24028084A JP S6331766 B2 JPS6331766 B2 JP S6331766B2
Authority
JP
Japan
Prior art keywords
lens
power
disk
semiconductor laser
aspherical
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
JP59240280A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61118708A (ja
Inventor
Yoji Kubota
Toshuki Inoe
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 JP24028084A priority Critical patent/JPS61118708A/ja
Publication of JPS61118708A publication Critical patent/JPS61118708A/ja
Publication of JPS6331766B2 publication Critical patent/JPS6331766B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Lenses (AREA)
JP24028084A 1984-11-14 1984-11-14 光デイスク用レンズ Granted JPS61118708A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24028084A JPS61118708A (ja) 1984-11-14 1984-11-14 光デイスク用レンズ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24028084A JPS61118708A (ja) 1984-11-14 1984-11-14 光デイスク用レンズ

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP1112514A Division JPH02118508A (ja) 1989-05-01 1989-05-01 光ディスク用レンズ

Publications (2)

Publication Number Publication Date
JPS61118708A JPS61118708A (ja) 1986-06-06
JPS6331766B2 true JPS6331766B2 (enrdf_load_stackoverflow) 1988-06-27

Family

ID=17057137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24028084A Granted JPS61118708A (ja) 1984-11-14 1984-11-14 光デイスク用レンズ

Country Status (1)

Country Link
JP (1) JPS61118708A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6313011A (ja) * 1986-07-03 1988-01-20 Sankyo Seiki Mfg Co Ltd 光デイスク用レンズ
JPS6425113A (en) * 1987-07-21 1989-01-27 Mark Kk Finite system large aperture single lens
JPH02223906A (ja) * 1989-02-24 1990-09-06 Hoya Corp 有限系大口径非球面レンズ

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5776512A (en) * 1980-10-31 1982-05-13 Konishiroku Photo Ind Co Ltd Large-aperture aspheric single lens
JPS57201210A (en) * 1981-06-04 1982-12-09 Sony Corp Condenser lens
JPS6156314A (ja) * 1984-08-28 1986-03-22 Konishiroku Photo Ind Co Ltd 光情報記録媒体の記録再生用対物レンズ

Also Published As

Publication number Publication date
JPS61118708A (ja) 1986-06-06

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees