JPS51144254A - Focal distance measurement method of optical lens and its device - Google Patents

Focal distance measurement method of optical lens and its device

Info

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
Application number
JP6824875A
Other languages
Japanese (ja)
Other versions
JPS5523366B2 (en
Inventor
Takeshi Koo
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.)
KANTOU SANGIYOU KK
Kanto Sangyo Co Ltd
Original Assignee
KANTOU SANGIYOU KK
Kanto Sangyo 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 KANTOU SANGIYOU KK, Kanto Sangyo Co Ltd filed Critical KANTOU SANGIYOU KK
Priority to JP6824875A priority Critical patent/JPS51144254A/en
Publication of JPS51144254A publication Critical patent/JPS51144254A/en
Publication of JPS5523366B2 publication Critical patent/JPS5523366B2/ja
Granted legal-status Critical Current

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
JP6824875A 1975-06-05 1975-06-05 Focal distance measurement method of optical lens and its device Granted JPS51144254A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020190250A1 (en) * 2019-03-15 2020-09-24 Герман ЯКОВЛЕВ Reverse flow compressor

Cited By (3)

* Cited by examiner, † Cited by third party
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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