JPS5617329A - Distance-measuring instrument - Google Patents

Distance-measuring instrument

Info

Publication number
JPS5617329A
JPS5617329A JP9458079A JP9458079A JPS5617329A JP S5617329 A JPS5617329 A JP S5617329A JP 9458079 A JP9458079 A JP 9458079A JP 9458079 A JP9458079 A JP 9458079A JP S5617329 A JPS5617329 A JP S5617329A
Authority
JP
Japan
Prior art keywords
mark
detection region
distance
measuring instrument
conjugate
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.)
Pending
Application number
JP9458079A
Other languages
Japanese (ja)
Inventor
Yoshi Kobayakawa
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP9458079A priority Critical patent/JPS5617329A/en
Publication of JPS5617329A publication Critical patent/JPS5617329A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Optical Distance (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE: To attain the constitution that provides detection even with the same photodetector with regard to a distance-measuring instrument for the automatic focusing adjustment of a camera, by arranging a mark and the detection region of a mark image so that the both will be conjugate to an object at the same time, and then by vibrating the mark or detection region in a base-line direction.
CONSTITUTION: Through focusing lens 3 of a photographing unit, mark 31a is projected on a distance-measured object and a mark image reflected by the object is photodetected through focusing lens 3. Mark 31a and the detection region of the mark image are arranged being conjugate to the object at the same time and mark 31a or detection region 36a is vibrated in the base-line direction. There is no need to vibrate a scanning mirror and the same photodetector detects light, so that evading deterioration in performance due to a difference in characteristics between elements as a result of photodetectors used will be effective.
COPYRIGHT: (C)1981,JPO&Japio
JP9458079A 1979-07-23 1979-07-23 Distance-measuring instrument Pending JPS5617329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9458079A JPS5617329A (en) 1979-07-23 1979-07-23 Distance-measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9458079A JPS5617329A (en) 1979-07-23 1979-07-23 Distance-measuring instrument

Publications (1)

Publication Number Publication Date
JPS5617329A true JPS5617329A (en) 1981-02-19

Family

ID=14114209

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9458079A Pending JPS5617329A (en) 1979-07-23 1979-07-23 Distance-measuring instrument

Country Status (1)

Country Link
JP (1) JPS5617329A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58217909A (en) * 1982-05-25 1983-12-19 ヴィルト　ライツ　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング Apparatus adapted to allow automatic focusing on object being observed with optical apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5438159A (en) * 1977-09-01 1979-03-22 Canon Inc Distance measurement apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5438159A (en) * 1977-09-01 1979-03-22 Canon Inc Distance measurement apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58217909A (en) * 1982-05-25 1983-12-19 ヴィルト　ライツ　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング Apparatus adapted to allow automatic focusing on object being observed with optical apparatus
JPH0259963B2 (en) * 1982-05-25 1990-12-14 Leitz Ernst Gmbh

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