JPS51124422A - Automatic adjustable focusing device of the optical system - Google Patents

Automatic adjustable focusing device of the optical system

Info

Publication number
JPS51124422A
JPS51124422A JP4926875A JP4926875A JPS51124422A JP S51124422 A JPS51124422 A JP S51124422A JP 4926875 A JP4926875 A JP 4926875A JP 4926875 A JP4926875 A JP 4926875A JP S51124422 A JPS51124422 A JP S51124422A
Authority
JP
Japan
Prior art keywords
optical system
focusing device
automatic adjustable
adjustable focusing
automatic
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
JP4926875A
Other languages
Japanese (ja)
Other versions
JPS5754766B2 (en
Inventor
Tsukumo Nobusawa
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP4926875A priority Critical patent/JPS51124422A/en
Priority to US05/591,464 priority patent/US4010479A/en
Priority to GB28332/75A priority patent/GB1514215A/en
Priority to DE19752530874 priority patent/DE2530874B2/en
Publication of JPS51124422A publication Critical patent/JPS51124422A/en
Publication of JPS5754766B2 publication Critical patent/JPS5754766B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To enhance the discrimination accuracy of an information signal of a focus matching point by applying a pulse signal corresponding to an internal resistance of a photo-conductive element of a single frequency.
COPYRIGHT: (C)1976,JPO&Japio
JP4926875A 1974-07-10 1975-04-23 Automatic adjustable focusing device of the optical system Granted JPS51124422A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP4926875A JPS51124422A (en) 1975-04-23 1975-04-23 Automatic adjustable focusing device of the optical system
US05/591,464 US4010479A (en) 1974-07-10 1975-06-30 Focusing apparatus for optical systems
GB28332/75A GB1514215A (en) 1974-07-10 1975-07-04 Focussing optical systems
DE19752530874 DE2530874B2 (en) 1974-07-10 1975-07-10 METHOD AND DEVICE FOR FOCUSING AN OPTICAL SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4926875A JPS51124422A (en) 1975-04-23 1975-04-23 Automatic adjustable focusing device of the optical system

Publications (2)

Publication Number Publication Date
JPS51124422A true JPS51124422A (en) 1976-10-29
JPS5754766B2 JPS5754766B2 (en) 1982-11-19

Family

ID=12826076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4926875A Granted JPS51124422A (en) 1974-07-10 1975-04-23 Automatic adjustable focusing device of the optical system

Country Status (1)

Country Link
JP (1) JPS51124422A (en)

Also Published As

Publication number Publication date
JPS5754766B2 (en) 1982-11-19

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