JPS5297750A - Objective lens of medium power - Google Patents

Objective lens of medium power

Info

Publication number
JPS5297750A
JPS5297750A JP1447276A JP1447276A JPS5297750A JP S5297750 A JPS5297750 A JP S5297750A JP 1447276 A JP1447276 A JP 1447276A JP 1447276 A JP1447276 A JP 1447276A JP S5297750 A JPS5297750 A JP S5297750A
Authority
JP
Japan
Prior art keywords
objective lens
medium power
lenses
radii
curvature
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
JP1447276A
Other languages
Japanese (ja)
Other versions
JPS5752565B2 (en
Inventor
Toshimichi Koizumi
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP1447276A priority Critical patent/JPS5297750A/en
Priority to US05/763,082 priority patent/US4139266A/en
Priority to DE2703823A priority patent/DE2703823C3/en
Publication of JPS5297750A publication Critical patent/JPS5297750A/en
Publication of JPS5752565B2 publication Critical patent/JPS5752565B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Lenses (AREA)

Abstract

PURPOSE: To obtain a flat image and provide a high resolving power by using an optical system consisting of three combined lenses which satisfies the specific conditions with respect to the radii of curvature of the lenses, the thickness thereof, the interval therebetween and the focal lengths thereof.
COPYRIGHT: (C)1977,JPO&Japio
JP1447276A 1976-01-30 1976-02-13 Objective lens of medium power Granted JPS5297750A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1447276A JPS5297750A (en) 1976-02-13 1976-02-13 Objective lens of medium power
US05/763,082 US4139266A (en) 1976-01-30 1977-01-27 Medium magnification objective for video disks
DE2703823A DE2703823C3 (en) 1976-01-30 1977-01-31 Medium magnification reproduction lens for optical disks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1447276A JPS5297750A (en) 1976-02-13 1976-02-13 Objective lens of medium power

Publications (2)

Publication Number Publication Date
JPS5297750A true JPS5297750A (en) 1977-08-16
JPS5752565B2 JPS5752565B2 (en) 1982-11-08

Family

ID=11861990

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1447276A Granted JPS5297750A (en) 1976-01-30 1976-02-13 Objective lens of medium power

Country Status (1)

Country Link
JP (1) JPS5297750A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831512U (en) * 1981-08-24 1983-03-01 株式会社三協精機製作所 Objective lens for magneto-optical disks
JPS5864168U (en) * 1981-10-27 1983-04-30 株式会社東芝 Waveform shaping circuit
US11163136B2 (en) 2015-02-04 2021-11-02 Largan Precision Co., Ltd. Optical lens assembly and image capturing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018540U (en) * 1983-07-14 1985-02-07 工業技術院長 Molecular beam crystal growth equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831512U (en) * 1981-08-24 1983-03-01 株式会社三協精機製作所 Objective lens for magneto-optical disks
JPS5864168U (en) * 1981-10-27 1983-04-30 株式会社東芝 Waveform shaping circuit
US11163136B2 (en) 2015-02-04 2021-11-02 Largan Precision Co., Ltd. Optical lens assembly and image capturing device
US12019210B2 (en) 2015-02-04 2024-06-25 Largan Precision Co., Ltd. Optical lens assembly and image capturing device

Also Published As

Publication number Publication date
JPS5752565B2 (en) 1982-11-08

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