JPS57136111A - Range finder - Google Patents

Range finder

Info

Publication number
JPS57136111A
JPS57136111A JP2245081A JP2245081A JPS57136111A JP S57136111 A JPS57136111 A JP S57136111A JP 2245081 A JP2245081 A JP 2245081A JP 2245081 A JP2245081 A JP 2245081A JP S57136111 A JPS57136111 A JP S57136111A
Authority
JP
Japan
Prior art keywords
circuit
light
maximum value
counting
range
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
JP2245081A
Other languages
Japanese (ja)
Inventor
Yoshio Kuramoto
Yoshihiro Tanaka
Seiji Yamada
Norio Beppu
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 JP2245081A priority Critical patent/JPS57136111A/en
Publication of JPS57136111A publication Critical patent/JPS57136111A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/02—Details
    • G01C3/06—Use of electric means to obtain final indication
    • G01C3/08—Use of electric radiation detectors

Abstract

PURPOSE:To achieve a highly accurate measurement of a range with a simple circuitry by drawing and processing phototelectric conversion signals in time series manner from a light receiving section employing an image sensor such as CCD for the light receiving section. CONSTITUTION:Upon the closing of a range measuring switch 6, a maximum value detection circuit 18, an FF24 and a counting circuit 28 are reset while a pulse-like light is emitted from a light emittng element 10 and the reflected light from an object 0 is focused on an image sensor 12 (such as CCD). The output of the sensor is inputted into a comparator circuit 20 via a buffer amplifier 14 and the maximum value detection circuit. On the other hand, when the signal inputted into the comparator circuit 20 via the amplifier 14 and a dilay circuit 16 is above the maximum value, the signal of a logic 1 is provided to the FF24 via an AND circuit 22. Receiving a signal from a timing control circuit 2, the FF24 switches the output terminal Q from 1 to 0 to stop the counting of the counting circuit 28 through an AND circuit 26 and outputs number data of a light receiving element kwhich received the focused light. This accomplishes a highly accurate measurement of a range with a simple construction.
JP2245081A 1981-02-17 1981-02-17 Range finder Pending JPS57136111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2245081A JPS57136111A (en) 1981-02-17 1981-02-17 Range finder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2245081A JPS57136111A (en) 1981-02-17 1981-02-17 Range finder

Publications (1)

Publication Number Publication Date
JPS57136111A true JPS57136111A (en) 1982-08-23

Family

ID=12083046

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2245081A Pending JPS57136111A (en) 1981-02-17 1981-02-17 Range finder

Country Status (1)

Country Link
JP (1) JPS57136111A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5958306A (en) * 1982-08-18 1984-04-04 イ−ストマン　コダック　カンパニ− Range finder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5958306A (en) * 1982-08-18 1984-04-04 イ−ストマン　コダック　カンパニ− Range finder

Similar Documents

Publication Publication Date Title
JPS5644803A (en) System measuring for thickness of nonmetallic sheet like object
JPS57144409A (en) Distance detector
JPS5527987A (en) Distance measuring instrument
JPS57136111A (en) Range finder
US5614910A (en) Miss distance vector scoring system
JPS5530632A (en) Spectroscopic photmeter of variable reception type
JPS557677A (en) Detection method of image sensor photo detection position
JPS5722568A (en) Fast peak detection circuit
JPS57119272A (en) Signal detection circuit
JPS55164355A (en) Ae wave discriminating unit
JPS5739306A (en) Shape detector
SU1188517A1 (en) Arrangement for measuring length of moving objects
SU1632141A1 (en) Optic signal receiving method
JPS5714243A (en) Detecting circuit for ringing signal
SU726489A1 (en) Arrangement for converting phase shift into digital code
JPS5711528A (en) Failure detecting circuit for pulse train
SU1125747A1 (en) Multichannel switching device
JPS5640778A (en) Magnetism failure detector
JPS57207828A (en) Signal converter
JPS6443705A (en) Edge detecting device for sheet
SU1490485A1 (en) Image transducer for displacement meters
SU1441345A1 (en) Apparatus for determining the centre of areas of square and trapezoidal video pulses
JPS57182112A (en) Range detector
SU1156105A1 (en) Device for selecting features in pattern recognition
SU423095A1 (en) DIGITAL MEASURING CENTER RECTANGULAR VIDEO IMPULSES