JPS5499480A - Laser speed measuring apparatus - Google Patents

Laser speed measuring apparatus

Info

Publication number
JPS5499480A
JPS5499480A JP593978A JP593978A JPS5499480A JP S5499480 A JPS5499480 A JP S5499480A JP 593978 A JP593978 A JP 593978A JP 593978 A JP593978 A JP 593978A JP S5499480 A JPS5499480 A JP S5499480A
Authority
JP
Japan
Prior art keywords
light
specular reflection
scattered
optical path
transmission optical
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
JP593978A
Other languages
Japanese (ja)
Inventor
Makoto Kikuchi
Michio Oomichi
Kenji Shiroshita
Hiroshi Asano
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP593978A priority Critical patent/JPS5499480A/en
Publication of JPS5499480A publication Critical patent/JPS5499480A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S17/00Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/50Systems of measurement based on relative movement of target
    • G01S17/58Velocity or trajectory determination systems; Sense-of-movement determination systems

Abstract

PURPOSE:To obtain a device of high precision of Doppler effect without effects of line fluctuations, by dividing the laser beam into reference light and specimen light, radiating both lines so that they intersect on the surface of the object being measured, and receving the reflected both scattered lights with each transmission optical path. CONSTITUTION:The specular reflection component of reflected scattered light S' of specimen light S radiated to the objected being measured 5 is received in a transmission optical path of the reference light R side, while the specular reflection component of reflected scattered light R' of reference light R is received in a transmission optical path of the light S side. Two light reception signals are passed through a semi-transparent mirror 2, a reception lens 6, and a pinhole 12 to be led into a photo detector 7. A total reflection mirror 3, the mirror 2 and the lens 6 have large apertures so as to receive a large quantity of specular reflection components of scattered lights of light S and light R. Since the Specular reflection components of the scattered lights of the light S and light R may be effectively received, strong scattered lights excelling in S/N may be obtained in the output of the photo detector 7, so that the S/N may be reduced and improved against large line fluctuations. Hence, the speed of steel plate or the like may be measuring at high precision without making contact.
JP593978A 1978-01-23 1978-01-23 Laser speed measuring apparatus Pending JPS5499480A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP593978A JPS5499480A (en) 1978-01-23 1978-01-23 Laser speed measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP593978A JPS5499480A (en) 1978-01-23 1978-01-23 Laser speed measuring apparatus

Publications (1)

Publication Number Publication Date
JPS5499480A true JPS5499480A (en) 1979-08-06

Family

ID=11624861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP593978A Pending JPS5499480A (en) 1978-01-23 1978-01-23 Laser speed measuring apparatus

Country Status (1)

Country Link
JP (1) JPS5499480A (en)

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