JPS5238943A - Multi-focus lens - Google Patents
Multi-focus lensInfo
- Publication number
- JPS5238943A JPS5238943A JP11520775A JP11520775A JPS5238943A JP S5238943 A JPS5238943 A JP S5238943A JP 11520775 A JP11520775 A JP 11520775A JP 11520775 A JP11520775 A JP 11520775A JP S5238943 A JPS5238943 A JP S5238943A
- Authority
- JP
- Japan
- Prior art keywords
- focus lens
- lens
- nonspherical
- plane
- sharp image
- 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.)
- Pending
Links
Landscapes
- Eyeglasses (AREA)
Abstract
PURPOSE: To provide a nonspherical plane to a smaller lens of a multi-focus lens so as to form a sharp image.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11520775A JPS5238943A (en) | 1975-09-23 | 1975-09-23 | Multi-focus lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11520775A JPS5238943A (en) | 1975-09-23 | 1975-09-23 | Multi-focus lens |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5238943A true JPS5238943A (en) | 1977-03-25 |
Family
ID=14657001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11520775A Pending JPS5238943A (en) | 1975-09-23 | 1975-09-23 | Multi-focus lens |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5238943A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6045998U (en) * | 1983-09-07 | 1985-04-01 | 昭和アルミニウム株式会社 | liquefied gas evaporator |
US5390500A (en) * | 1992-12-29 | 1995-02-21 | Praxair Technology, Inc. | Cryogenic fluid vaporizer system and process |
JPH0882775A (en) * | 1994-09-09 | 1996-03-26 | Micro Eng Kk | Bifocal spectacle lens for far and near sight and its production |
-
1975
- 1975-09-23 JP JP11520775A patent/JPS5238943A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6045998U (en) * | 1983-09-07 | 1985-04-01 | 昭和アルミニウム株式会社 | liquefied gas evaporator |
US5390500A (en) * | 1992-12-29 | 1995-02-21 | Praxair Technology, Inc. | Cryogenic fluid vaporizer system and process |
JPH0882775A (en) * | 1994-09-09 | 1996-03-26 | Micro Eng Kk | Bifocal spectacle lens for far and near sight and its production |
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