JPS5575668A - Measurement unit for mobile speed of moving particle - Google Patents

Measurement unit for mobile speed of moving particle

Info

Publication number
JPS5575668A
JPS5575668A JP14890078A JP14890078A JPS5575668A JP S5575668 A JPS5575668 A JP S5575668A JP 14890078 A JP14890078 A JP 14890078A JP 14890078 A JP14890078 A JP 14890078A JP S5575668 A JPS5575668 A JP S5575668A
Authority
JP
Japan
Prior art keywords
eyeground
mobile speed
flux
light
measurement unit
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
JP14890078A
Other languages
Japanese (ja)
Inventor
Shibuo Okamoto
Shinichi Nishimura
Takashi Yokokura
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.)
Tokyo Optical Co Ltd
Original Assignee
Tokyo Optical 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 Tokyo Optical Co Ltd filed Critical Tokyo Optical Co Ltd
Priority to JP14890078A priority Critical patent/JPS5575668A/en
Publication of JPS5575668A publication Critical patent/JPS5575668A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

PURPOSE:To measure the mobile speed easily with high speed, for eyeground blood flow, by using laser light. CONSTITUTION:The laser light flux a from the oscillator 11 is sectioned into flux b1, b2 at the semi-transparent prism 14, they are emitted to the eyeground 30, and the scattered light c from the measuring point of the flux b1, b2 is received via the pin hole 37. On the other hand, the light from the light source 31 illuminates the eyeground 30 via the pupilary surface 28 of inspected person, and the inspector 44 observes the measurement formed at conjugated position of the hole 37 via the eyepiece lens 43. Further, the image on the index 41a is observed via the lens 43 and the position of the eyeground 30 is determined so that the image is sharp, and by measuring the beat frequency of scattered light c, the mobile speed of moving particles can easily be measured with high accuracy.
JP14890078A 1978-12-01 1978-12-01 Measurement unit for mobile speed of moving particle Pending JPS5575668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14890078A JPS5575668A (en) 1978-12-01 1978-12-01 Measurement unit for mobile speed of moving particle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14890078A JPS5575668A (en) 1978-12-01 1978-12-01 Measurement unit for mobile speed of moving particle

Publications (1)

Publication Number Publication Date
JPS5575668A true JPS5575668A (en) 1980-06-07

Family

ID=15463180

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14890078A Pending JPS5575668A (en) 1978-12-01 1978-12-01 Measurement unit for mobile speed of moving particle

Country Status (1)

Country Link
JP (1) JPS5575668A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50102371A (en) * 1974-01-11 1975-08-13
JPS52142885A (en) * 1976-04-01 1977-11-29 Nat Res Dev Device for measuring blood flow of retina
JPS5354069A (en) * 1976-10-26 1978-05-17 Nec Corp Laser doppler speedmeter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50102371A (en) * 1974-01-11 1975-08-13
JPS52142885A (en) * 1976-04-01 1977-11-29 Nat Res Dev Device for measuring blood flow of retina
JPS5354069A (en) * 1976-10-26 1978-05-17 Nec Corp Laser doppler speedmeter

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