GB1307431A - Optical masking devices and apparatus using such devices - Google Patents

Optical masking devices and apparatus using such devices

Info

Publication number
GB1307431A
GB1307431A GB2979370A GB1307431DA GB1307431A GB 1307431 A GB1307431 A GB 1307431A GB 2979370 A GB2979370 A GB 2979370A GB 1307431D A GB1307431D A GB 1307431DA GB 1307431 A GB1307431 A GB 1307431A
Authority
GB
United Kingdom
Prior art keywords
pair
bars
patterns
frequency
circuit
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
GB2979370A
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.)
SECR DEFENCE
UK Secretary of State for Defence
Original Assignee
SECR DEFENCE
UK Secretary of State for Defence
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 SECR DEFENCE, UK Secretary of State for Defence filed Critical SECR DEFENCE
Publication of GB1307431A publication Critical patent/GB1307431A/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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)
GB2979370A 1970-06-19 1970-06-19 Optical masking devices and apparatus using such devices Expired GB1307431A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2979370 1970-06-19
FR7122378A FR2143992A5 (enExample) 1970-06-19 1971-06-18

Publications (1)

Publication Number Publication Date
GB1307431A true GB1307431A (en) 1973-02-21

Family

ID=26216465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2979370A Expired GB1307431A (en) 1970-06-19 1970-06-19 Optical masking devices and apparatus using such devices

Country Status (4)

Country Link
US (1) US3706494A (enExample)
DE (1) DE2130290A1 (enExample)
FR (1) FR2143992A5 (enExample)
GB (1) GB1307431A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2266366A (en) * 1992-04-16 1993-10-27 Rank Taylor Hobson Ltd Light beam angle detection
WO2011023878A1 (fr) * 2009-08-24 2011-03-03 Astrium Sas Mesure d'une vitesse de deplacement d'un element mobile

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2215576C3 (de) * 1972-03-30 1988-09-29 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Einrichtung zum Messen, Regeln und/ oder Anzeigen der Bewegung von Landfahrzeugen
GB1411439A (en) * 1972-08-23 1975-10-22 Marconi Co Ltd Optical velocity measuring apparatus
DE2532033C2 (de) * 1975-07-17 1983-03-10 Fromund Prof. Dipl.-Phys. Dr.-Ing. 3003 Ronnenberg Hock Verfahren und Vorrichtung zur Geschwindigkeitsmessung
DE3153284C2 (de) * 1981-04-18 1987-01-02 Telefunken electronic GmbH, 7100 Heilbronn Thermoresistive Füllstandsmeßeinrichtung
IL66383A (en) * 1982-07-23 1988-04-29 Israel Atomic Energy Comm Optical level
US5012080A (en) * 1990-04-19 1991-04-30 Griscom Daniel T Directional particle filter
US5745226A (en) * 1996-11-04 1998-04-28 Litton Systems, Inc. Passive optical velocity measurement device and method
US6532061B2 (en) * 2000-08-25 2003-03-11 Amnis Corporation Measuring the velocity of small moving objects such as cells
US6875973B2 (en) * 2000-08-25 2005-04-05 Amnis Corporation Auto focus for a flow imaging system
GB0616838D0 (en) * 2006-08-25 2006-10-04 Moir Christopher I Velocity detector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344700A (en) * 1961-05-23 1967-10-03 British Aircraft Corp Ltd Displacement measuring system
US3170068A (en) * 1962-01-03 1965-02-16 Petriw Andrew Spherical chamber for measurement of visibility
US3432237A (en) * 1964-03-31 1969-03-11 Singer General Precision Velocity measuring device
GB1250605A (enExample) * 1967-10-27 1971-10-20

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2266366A (en) * 1992-04-16 1993-10-27 Rank Taylor Hobson Ltd Light beam angle detection
GB2266366B (en) * 1992-04-16 1996-04-24 Rank Taylor Hobson Ltd Angle detection
US5579108A (en) * 1992-04-16 1996-11-26 Rank Taylor Hobson Limited System and method for detecting the angle of a light beam using a mask with a transmissivity pattern
WO2011023878A1 (fr) * 2009-08-24 2011-03-03 Astrium Sas Mesure d'une vitesse de deplacement d'un element mobile

Also Published As

Publication number Publication date
FR2143992A5 (enExample) 1973-02-09
DE2130290A1 (de) 1972-03-23
US3706494A (en) 1972-12-19

Similar Documents

Publication Publication Date Title
GB1307431A (en) Optical masking devices and apparatus using such devices
US4162509A (en) Non-contact velocimeter using arrays
GB1421571A (en) Apparatus for measuring the speed and direction of movement of an object
CA1146741B (en) Auto-focus camera with solid state range finder
US3599004A (en) Arrangement of photocells for the determination of the position of an equidistantly divided scale
JPS5793208A (en) Optical system of distance measuring apparatus
GB1062749A (en) Optical radiation tracking device
US3006235A (en) Velocity measuring scanner for aircraft
GB1169663A (en) Integrated Photosensitive Circuit
US3357298A (en) Star tracker including angularly disposed photoelectric strip surfaces
GB1276593A (en) Improvements in or relating to a method of, and apparatus for use in measuring any displacement and/or rotation of an object parallel to a fixed plane and relative to a reference position
GB1275123A (en) Improvements in or relating to a telemeter, chiefly for photographic purposes
JPS5574408A (en) Optical inspection device for object surface
SU934217A1 (ru) Устройство дл контрол формы движущегос материала
SU479948A1 (ru) Двухкоординатный оптико-электронный угломер
GB1520638A (en) Method and apparatus for use in position determining
SU1085389A1 (ru) Устройство для измерения вектора скорости движения изображения протяженного объекта со случайным распределением яркостей
GB1065270A (en) Photoelectric scanning of measuring marks
SU765651A1 (ru) Способ контрол линейных размеров периодических микроструктур
SU509795A1 (ru) Устройство дл определени величиныи точки приложени равнодействующейсил давлени света на тело сложнойформы
SU419725A1 (ru) Устройство для контроля размеров тел
GB1405362A (en) Device for positioning slides
SU661338A1 (ru) Оптоэлектронный измеритель скорости и угловых перемещений
Deeley Magnetic method using feedback to measure the speed of steel strip
JPS61162704A (ja) 外径寸法測定装置

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee