JPS5292533A - Objective lens with medium magnification - Google Patents
Objective lens with medium magnificationInfo
- Publication number
- JPS5292533A JPS5292533A JP834476A JP834476A JPS5292533A JP S5292533 A JPS5292533 A JP S5292533A JP 834476 A JP834476 A JP 834476A JP 834476 A JP834476 A JP 834476A JP S5292533 A JPS5292533 A JP S5292533A
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- medium magnification
- magnification
- medium
- thrickness
- 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
Abstract
PURPOSE: To increase the operating distnace, to make the image flat and to improve the resolution by satisfying various conditions of the focal distance, thrickness and the radius of curvature and by using four lenses of any desired shape as the lens system.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP834476A JPS5292533A (en) | 1976-01-30 | 1976-01-30 | Objective lens with medium magnification |
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 |
---|---|---|---|
JP834476A JPS5292533A (en) | 1976-01-30 | 1976-01-30 | Objective lens with medium magnification |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5292533A true JPS5292533A (en) | 1977-08-04 |
JPS5752566B2 JPS5752566B2 (en) | 1982-11-08 |
Family
ID=11690586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP834476A Granted JPS5292533A (en) | 1976-01-30 | 1976-01-30 | Objective lens with medium magnification |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5292533A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11953654B2 (en) | 2016-02-02 | 2024-04-09 | Largan Precision Co., Ltd. | Image capturing lens system, image capturing apparatus and electronic device |
-
1976
- 1976-01-30 JP JP834476A patent/JPS5292533A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11953654B2 (en) | 2016-02-02 | 2024-04-09 | Largan Precision Co., Ltd. | Image capturing lens system, image capturing apparatus and electronic device |
Also Published As
Publication number | Publication date |
---|---|
JPS5752566B2 (en) | 1982-11-08 |
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