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JPS54119267A - Distance detector - Google Patents

Distance detector

Info

Publication number
JPS54119267A
JPS54119267A JP2701378A JP2701378A JPS54119267A JP S54119267 A JPS54119267 A JP S54119267A JP 2701378 A JP2701378 A JP 2701378A JP 2701378 A JP2701378 A JP 2701378A JP S54119267 A JPS54119267 A JP S54119267A
Authority
JP
Japan
Prior art keywords
subject
distance
photo detectors
thru
zone
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
JP2701378A
Other languages
Japanese (ja)
Inventor
Motonobu Matsuda
Toru Matsui
Yasuhiro Nanba
Yoshihiro Tanaka
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP2701378A priority Critical patent/JPS54119267A/en
Priority to US06/018,053 priority patent/US4251144A/en
Priority to DE19792909090 priority patent/DE2909090A1/en
Publication of JPS54119267A publication Critical patent/JPS54119267A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To finely segment distance measuring zone without increasing the number of photo detectors and at a short distance between base line lengths, improve the accuracy of distance measurement and further achieve the miniaturization of the apparatus by performing the discrimination of distance measurement targets according to the state of plural photo detectors.
CONSTITUTION: The light from a light source 8 is condensed and projected to the subject through the projection lens 9 provided in the portion opposing to the subject in the distance detecting part of the camera. An imaging lens 10 is provided by leaving a suitable base line length from the projection lens 9 and forms the reflected image of the projected luminous flux by the subject onto the faces of photo detectors 11a thru 11d. The position of the reflected light image from the subject change along the array direction of the photo detectors in correspondence to the distance from the subject based on the principle of triangulation, and the outputs of the respective photo detectors 11 are supplied to memory circuits 35 thru 41 via amplifiers 14 thru 17, waveform shapers 18 thru 21, gate circuit, then according to the memory outputs any of LEDs of a display circuit 49 is lighted, whereby the subject distance may be detected zone by zone.
COPYRIGHT: (C)1979,JPO&Japio
JP2701378A 1978-03-08 1978-03-08 Distance detector Pending JPS54119267A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2701378A JPS54119267A (en) 1978-03-08 1978-03-08 Distance detector
US06/018,053 US4251144A (en) 1978-03-08 1979-03-06 Rangefinding system
DE19792909090 DE2909090A1 (en) 1978-03-08 1979-03-08 DISTANCE MEASURING SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2701378A JPS54119267A (en) 1978-03-08 1978-03-08 Distance detector

Publications (1)

Publication Number Publication Date
JPS54119267A true JPS54119267A (en) 1979-09-17

Family

ID=12209206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2701378A Pending JPS54119267A (en) 1978-03-08 1978-03-08 Distance detector

Country Status (1)

Country Link
JP (1) JPS54119267A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56143903A (en) * 1980-03-12 1981-11-10 Honeywell Inc Distance determining apparatus
US4976537A (en) * 1987-10-12 1990-12-11 Fuji Photo Film Co., Ltd. Distance measuring device with plural differing reference voltages

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019469A (en) * 1973-06-18 1975-02-28
JPS51120247A (en) * 1975-04-14 1976-10-21 Kyocera Corp A range finder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019469A (en) * 1973-06-18 1975-02-28
JPS51120247A (en) * 1975-04-14 1976-10-21 Kyocera Corp A range finder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56143903A (en) * 1980-03-12 1981-11-10 Honeywell Inc Distance determining apparatus
US4976537A (en) * 1987-10-12 1990-12-11 Fuji Photo Film Co., Ltd. Distance measuring device with plural differing reference voltages

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