JPS5515041A - Distance measuring method dependent upon pulse laser - Google Patents

Distance measuring method dependent upon pulse laser

Info

Publication number
JPS5515041A
JPS5515041A JP8774578A JP8774578A JPS5515041A JP S5515041 A JPS5515041 A JP S5515041A JP 8774578 A JP8774578 A JP 8774578A JP 8774578 A JP8774578 A JP 8774578A JP S5515041 A JPS5515041 A JP S5515041A
Authority
JP
Japan
Prior art keywords
rotary mirror
focusing lens
target
pulses
rotation angle
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
JP8774578A
Other languages
Japanese (ja)
Other versions
JPS5916234B2 (en
Inventor
Yasuji Suzaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP53087745A priority Critical patent/JPS5916234B2/en
Publication of JPS5515041A publication Critical patent/JPS5515041A/en
Publication of JPS5916234B2 publication Critical patent/JPS5916234B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves

Abstract

PURPOSE:To obtain a sure measurement by an apparatus strong against disturbance, by radiating laser pulses to a rotary mirror and reflecting reflected pulses from a target by the rotary mirror and detecting focusing by an image sensor which is provided at the focal position of a focusing lens. CONSTITUTION:Rotary mirror 1 is rotated, and rotation angle signals are sent from rotation angle detector 9 to synchronizing signal generator 12. When laser pulses which should be incident onto a rotary mirror has a rotation angle toward target 2, synchronizing signal generator 12 drives laser control circuit 11 to cause oscillator 10 to generate laser pulses. These pulses are reflected by reflection mirror 13 and rotary mirror 1, and a part of them is reflected by glass plate 15 and is focused on the focal position of image sensor 19 through focusing lens 3. Then, the light which passed through glass plate 15 is deviated from the focal point of focusing lens 3 and is focused through a path of target 2-glass plate 15-rotary mirror 1-focusing lens 3. These light receiving points are indicated by luminous points d and e on Braun tube 21, so that target distance R can be measured accurately on a basis of interval L between luminous points d and e.
JP53087745A 1978-07-20 1978-07-20 Distance measurement method using pulsed laser Expired JPS5916234B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53087745A JPS5916234B2 (en) 1978-07-20 1978-07-20 Distance measurement method using pulsed laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53087745A JPS5916234B2 (en) 1978-07-20 1978-07-20 Distance measurement method using pulsed laser

Publications (2)

Publication Number Publication Date
JPS5515041A true JPS5515041A (en) 1980-02-01
JPS5916234B2 JPS5916234B2 (en) 1984-04-13

Family

ID=13923460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53087745A Expired JPS5916234B2 (en) 1978-07-20 1978-07-20 Distance measurement method using pulsed laser

Country Status (1)

Country Link
JP (1) JPS5916234B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57211507A (en) * 1981-06-24 1982-12-25 Fujitsu Ltd Measuring method for distance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57211507A (en) * 1981-06-24 1982-12-25 Fujitsu Ltd Measuring method for distance

Also Published As

Publication number Publication date
JPS5916234B2 (en) 1984-04-13

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