JPS5724814A - Distance measurement device - Google Patents

Distance measurement device

Info

Publication number
JPS5724814A
JPS5724814A JP9961780A JP9961780A JPS5724814A JP S5724814 A JPS5724814 A JP S5724814A JP 9961780 A JP9961780 A JP 9961780A JP 9961780 A JP9961780 A JP 9961780A JP S5724814 A JPS5724814 A JP S5724814A
Authority
JP
Japan
Prior art keywords
distance
image
precise measurement
position detecting
psd2
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
JP9961780A
Other languages
Japanese (ja)
Inventor
Haruhiko Momose
Toshiaki Takahashi
Yasushi Hoshino
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta 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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP9961780A priority Critical patent/JPS5724814A/en
Priority to US06/281,890 priority patent/US4441810A/en
Priority to DE19813127786 priority patent/DE3127786A1/en
Publication of JPS5724814A publication Critical patent/JPS5724814A/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 improve precise measurement of a distance, to reduce a manufacturing cost, and to lighten the device, in weight, by a method wherein a PSD is used as the first and second semiconductor position detecting elements. CONSTITUTION:A first image position detector PSD1, and a second image position detector PSD2, which can move horizontally, are located at the rear of first and second image-formation lenses L1 and L2 for measuring a distance, and output currents I11, I12, I21, and I22, processed by position detecting, processing circuits PDC1 and PDC2, are outputted as electronic signals I01, and I02. The moving amount of a luminance center of gravity of an object is correctly found from the signals. The detector PSD2 is moved horizontally so that an output ID of a differential amplifier A4 becomes minimum, and when the movement is caused to relate with the adjustment amount of a photographic lens L3, whereby a focus can be adjusted. This permits the precise measurement of a distance at an inexpensive cost.
JP9961780A 1980-07-15 1980-07-21 Distance measurement device Pending JPS5724814A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP9961780A JPS5724814A (en) 1980-07-21 1980-07-21 Distance measurement device
US06/281,890 US4441810A (en) 1980-07-15 1981-07-09 Range finder
DE19813127786 DE3127786A1 (en) 1980-07-15 1981-07-14 DISTANCE KNIFE, ESPECIALLY FOR CAMERAS OR THE LIKE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9961780A JPS5724814A (en) 1980-07-21 1980-07-21 Distance measurement device

Publications (1)

Publication Number Publication Date
JPS5724814A true JPS5724814A (en) 1982-02-09

Family

ID=14252047

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9961780A Pending JPS5724814A (en) 1980-07-15 1980-07-21 Distance measurement device

Country Status (1)

Country Link
JP (1) JPS5724814A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62191712A (en) * 1986-02-18 1987-08-22 Matsushita Electronics Corp Semiconductive apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62191712A (en) * 1986-02-18 1987-08-22 Matsushita Electronics Corp Semiconductive apparatus

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