GB1446911A - Optical systems for measuring displacement or speed - Google Patents

Optical systems for measuring displacement or speed

Info

Publication number
GB1446911A
GB1446911A GB712573A GB712573A GB1446911A GB 1446911 A GB1446911 A GB 1446911A GB 712573 A GB712573 A GB 712573A GB 712573 A GB712573 A GB 712573A GB 1446911 A GB1446911 A GB 1446911A
Authority
GB
United Kingdom
Prior art keywords
speed
optical systems
measuring displacement
displacement
measuring
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
GB712573A
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.)
Qioptiq Ltd
Original Assignee
Pilkington PE 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 Pilkington PE Ltd filed Critical Pilkington PE Ltd
Priority to GB712573A priority Critical patent/GB1446911A/en
Priority to DE19742405411 priority patent/DE2405411A1/en
Priority to CA192,388A priority patent/CA1007043A/en
Priority to US05/697,489 priority patent/US4040741A/en
Publication of GB1446911A publication Critical patent/GB1446911A/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)
  • Length Measuring Devices By Optical Means (AREA)
GB712573A 1973-02-14 1973-02-14 Optical systems for measuring displacement or speed Expired GB1446911A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB712573A GB1446911A (en) 1973-02-14 1973-02-14 Optical systems for measuring displacement or speed
DE19742405411 DE2405411A1 (en) 1973-02-14 1974-02-05 OPTICAL SYSTEM FOR MEASURING DISTANCES OR SPEEDS
CA192,388A CA1007043A (en) 1973-02-14 1974-02-13 Optical odometer polarising grating
US05/697,489 US4040741A (en) 1973-02-14 1976-06-18 Polarized grating optical odometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB712573A GB1446911A (en) 1973-02-14 1973-02-14 Optical systems for measuring displacement or speed

Publications (1)

Publication Number Publication Date
GB1446911A true GB1446911A (en) 1976-08-18

Family

ID=9827108

Family Applications (1)

Application Number Title Priority Date Filing Date
GB712573A Expired GB1446911A (en) 1973-02-14 1973-02-14 Optical systems for measuring displacement or speed

Country Status (3)

Country Link
CA (1) CA1007043A (en)
DE (1) DE2405411A1 (en)
GB (1) GB1446911A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6399614B1 (en) 1997-08-01 2002-06-04 Recordati S.A. Chemical And Pharmaceutical Company 1-(N-phenylaminoalkyl)piperazine derivatives substituted at position 2 of the phenyl ring

Also Published As

Publication number Publication date
DE2405411A1 (en) 1974-08-22
CA1007043A (en) 1977-03-22

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Legal Events

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