JPS5297750A - Objective lens of medium power - Google Patents
Objective lens of medium powerInfo
- 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
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
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)
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 (2)
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 |
JPS6063918A (en) * | 1983-09-17 | 1985-04-12 | Anelva Corp | Cell for molecular beam source |
-
1976
- 1976-02-13 JP JP1447276A patent/JPS5297750A/en active Granted
Cited By (4)
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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