JPS51144254A - Focal distance measurement method of optical lens and its device - Google Patents
Focal distance measurement method of optical lens and its deviceInfo
- Publication number
- JPS51144254A JPS51144254A JP6824875A JP6824875A JPS51144254A JP S51144254 A JPS51144254 A JP S51144254A JP 6824875 A JP6824875 A JP 6824875A JP 6824875 A JP6824875 A JP 6824875A JP S51144254 A JPS51144254 A JP S51144254A
- Authority
- JP
- Japan
- Prior art keywords
- focal distance
- optical lens
- measurement method
- distance measurement
- light
- 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
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
PURPOSE: After the light of a light source is converted into pulse light, the light enters a measured lens through a collimator lens to obtain an pulse point image, ensuring the measurement of the focal distance of measured lens by judging the obscurity of the point image by a photoelectric element.
COPYRIGHT: (C)1976,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6824875A JPS51144254A (en) | 1975-06-05 | 1975-06-05 | Focal distance measurement method of optical lens and its device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6824875A JPS51144254A (en) | 1975-06-05 | 1975-06-05 | Focal distance measurement method of optical lens and its device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS51144254A true JPS51144254A (en) | 1976-12-11 |
JPS5523366B2 JPS5523366B2 (en) | 1980-06-23 |
Family
ID=13368264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6824875A Granted JPS51144254A (en) | 1975-06-05 | 1975-06-05 | Focal distance measurement method of optical lens and its device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS51144254A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS562526A (en) * | 1979-06-21 | 1981-01-12 | Ricoh Co Ltd | Focus adjusting method of mtf measuring instrument |
JPS5644821A (en) * | 1979-09-21 | 1981-04-24 | Takeshi Koo | Measuring method of optical lens focal distance and measuring system therefor |
CN103439088A (en) * | 2013-08-19 | 2013-12-11 | 江苏大学 | Method and device for using convex lens to generate collimated light |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020190250A1 (en) * | 2019-03-15 | 2020-09-24 | Герман ЯКОВЛЕВ | Reverse flow compressor |
-
1975
- 1975-06-05 JP JP6824875A patent/JPS51144254A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS562526A (en) * | 1979-06-21 | 1981-01-12 | Ricoh Co Ltd | Focus adjusting method of mtf measuring instrument |
JPS5644821A (en) * | 1979-09-21 | 1981-04-24 | Takeshi Koo | Measuring method of optical lens focal distance and measuring system therefor |
CN103439088A (en) * | 2013-08-19 | 2013-12-11 | 江苏大学 | Method and device for using convex lens to generate collimated light |
Also Published As
Publication number | Publication date |
---|---|
JPS5523366B2 (en) | 1980-06-23 |
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