JPS51129246A - Detector for convex lens focal point face - Google Patents

Detector for convex lens focal point face

Info

Publication number
JPS51129246A
JPS51129246A JP5323875A JP5323875A JPS51129246A JP S51129246 A JPS51129246 A JP S51129246A JP 5323875 A JP5323875 A JP 5323875A JP 5323875 A JP5323875 A JP 5323875A JP S51129246 A JPS51129246 A JP S51129246A
Authority
JP
Japan
Prior art keywords
focal point
convex lens
detector
point face
lens focal
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
JP5323875A
Other languages
Japanese (ja)
Other versions
JPS552848B2 (en
Inventor
Mitsuhiro Tatsuta
Masahiro Ikeda
Haruo Yoshikiyo
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP5323875A priority Critical patent/JPS51129246A/en
Publication of JPS51129246A publication Critical patent/JPS51129246A/en
Publication of JPS552848B2 publication Critical patent/JPS552848B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE: Detection of focal point face is made easy by observing part of light flux which again has passed the convex lens projecting it on a screen after being reflected by an injection substance.
COPYRIGHT: (C)1976,JPO&Japio
JP5323875A 1975-05-06 1975-05-06 Detector for convex lens focal point face Granted JPS51129246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5323875A JPS51129246A (en) 1975-05-06 1975-05-06 Detector for convex lens focal point face

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5323875A JPS51129246A (en) 1975-05-06 1975-05-06 Detector for convex lens focal point face

Publications (2)

Publication Number Publication Date
JPS51129246A true JPS51129246A (en) 1976-11-10
JPS552848B2 JPS552848B2 (en) 1980-01-22

Family

ID=12937212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5323875A Granted JPS51129246A (en) 1975-05-06 1975-05-06 Detector for convex lens focal point face

Country Status (1)

Country Link
JP (1) JPS51129246A (en)

Also Published As

Publication number Publication date
JPS552848B2 (en) 1980-01-22

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