GB1396889A - Optical velocity measuring apparatus - Google Patents

Optical velocity measuring apparatus

Info

Publication number
GB1396889A
GB1396889A GB3186171A GB3186171A GB1396889A GB 1396889 A GB1396889 A GB 1396889A GB 3186171 A GB3186171 A GB 3186171A GB 3186171 A GB3186171 A GB 3186171A GB 1396889 A GB1396889 A GB 1396889A
Authority
GB
United Kingdom
Prior art keywords
photo
detectors
grating
optical grating
velocity
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.)
Expired
Application number
GB3186171A
Other languages
English (en)
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB3186171A priority Critical patent/GB1396889A/en
Priority to CH1017672A priority patent/CH564777A5/xx
Priority to FR7224809A priority patent/FR2144899A1/fr
Priority to DE19722233509 priority patent/DE2233509A1/de
Priority to DE19727225461 priority patent/DE7225461U/de
Publication of GB1396889A publication Critical patent/GB1396889A/en
Expired 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
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Length Measuring Devices By Optical Means (AREA)
GB3186171A 1971-07-07 1971-07-07 Optical velocity measuring apparatus Expired GB1396889A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB3186171A GB1396889A (en) 1971-07-07 1971-07-07 Optical velocity measuring apparatus
CH1017672A CH564777A5 (enExample) 1971-07-07 1972-07-07
FR7224809A FR2144899A1 (enExample) 1971-07-07 1972-07-07
DE19722233509 DE2233509A1 (de) 1971-07-07 1972-07-07 Optische geschwindigkeitsmessvorrichtung
DE19727225461 DE7225461U (de) 1971-07-07 1972-07-07 Optische geschwindigkeitsmessvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3186171A GB1396889A (en) 1971-07-07 1971-07-07 Optical velocity measuring apparatus

Publications (1)

Publication Number Publication Date
GB1396889A true GB1396889A (en) 1975-06-11

Family

ID=10329497

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3186171A Expired GB1396889A (en) 1971-07-07 1971-07-07 Optical velocity measuring apparatus

Country Status (4)

Country Link
CH (1) CH564777A5 (enExample)
DE (2) DE7225461U (enExample)
FR (1) FR2144899A1 (enExample)
GB (1) GB1396889A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4472735A (en) * 1980-04-18 1984-09-18 Victor Company Of Japan, Ltd. Optical low-pass filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4472735A (en) * 1980-04-18 1984-09-18 Victor Company Of Japan, Ltd. Optical low-pass filter

Also Published As

Publication number Publication date
CH564777A5 (enExample) 1975-07-31
DE2233509A1 (de) 1973-03-15
DE7225461U (de) 1973-07-26
FR2144899A1 (enExample) 1973-02-16

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee