JPS53100845A - Automatic focusing system - Google Patents

Automatic focusing system

Info

Publication number
JPS53100845A
JPS53100845A JP1498677A JP1498677A JPS53100845A JP S53100845 A JPS53100845 A JP S53100845A JP 1498677 A JP1498677 A JP 1498677A JP 1498677 A JP1498677 A JP 1498677A JP S53100845 A JPS53100845 A JP S53100845A
Authority
JP
Japan
Prior art keywords
automatic focusing
focusing system
white area
highly
microscope
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
JP1498677A
Other languages
Japanese (ja)
Other versions
JPS5751648B2 (en
Inventor
Takafumi Miyatake
Yoshihiro Shima
Seiji Kashioka
Masakazu Ejiri
Yoshikazu Suzumura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1498677A priority Critical patent/JPS53100845A/en
Publication of JPS53100845A publication Critical patent/JPS53100845A/en
Publication of JPS5751648B2 publication Critical patent/JPS5751648B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To provide an automatic focusing system for a microscope, which is highly sensitive, highly speedy and stable for noise, by converting the differential value of a video signal into a binary signal to use its white area as an evaluation value and to relatively move an objective lens and a sample carriage in the direction to have the white area increasing.
COPYRIGHT: (C)1978,JPO&Japio
JP1498677A 1977-02-16 1977-02-16 Automatic focusing system Granted JPS53100845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1498677A JPS53100845A (en) 1977-02-16 1977-02-16 Automatic focusing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1498677A JPS53100845A (en) 1977-02-16 1977-02-16 Automatic focusing system

Publications (2)

Publication Number Publication Date
JPS53100845A true JPS53100845A (en) 1978-09-02
JPS5751648B2 JPS5751648B2 (en) 1982-11-02

Family

ID=11876265

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1498677A Granted JPS53100845A (en) 1977-02-16 1977-02-16 Automatic focusing system

Country Status (1)

Country Link
JP (1) JPS53100845A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5714813A (en) * 1980-06-30 1982-01-26 Sony Corp Focus measuring device
JPS62201712U (en) * 1986-06-14 1987-12-23

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5372618A (en) * 1976-12-10 1978-06-28 Bell & Howell Japan Composite control device for camera

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5372618A (en) * 1976-12-10 1978-06-28 Bell & Howell Japan Composite control device for camera

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5714813A (en) * 1980-06-30 1982-01-26 Sony Corp Focus measuring device
JPS62201712U (en) * 1986-06-14 1987-12-23

Also Published As

Publication number Publication date
JPS5751648B2 (en) 1982-11-02

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