FR987245A - Device for locating and following distant objects radiating more or less energy than the field constituting the background on which they appear - Google Patents

Device for locating and following distant objects radiating more or less energy than the field constituting the background on which they appear

Info

Publication number
FR987245A
FR987245A FR987245DA FR987245A FR 987245 A FR987245 A FR 987245A FR 987245D A FR987245D A FR 987245DA FR 987245 A FR987245 A FR 987245A
Authority
FR
France
Prior art keywords
locating
appear
background
less energy
distant objects
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
Other languages
French (fr)
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.)
Sperry Corp
Original Assignee
Sperry 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 Sperry Corp filed Critical Sperry Corp
Application granted granted Critical
Publication of FR987245A publication Critical patent/FR987245A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/14—Viewfinders

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR987245D 1948-05-26 1949-05-24 Device for locating and following distant objects radiating more or less energy than the field constituting the background on which they appear Expired FR987245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US987245XA 1948-05-26 1948-05-26

Publications (1)

Publication Number Publication Date
FR987245A true FR987245A (en) 1951-08-10

Family

ID=22270617

Family Applications (1)

Application Number Title Priority Date Filing Date
FR987245D Expired FR987245A (en) 1948-05-26 1949-05-24 Device for locating and following distant objects radiating more or less energy than the field constituting the background on which they appear

Country Status (1)

Country Link
FR (1) FR987245A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1143911B (en) * 1958-07-16 1963-02-21 Westinghouse Canada Ltd Automatic copier with photoelectric control
DE1175003B (en) * 1956-06-26 1964-07-30 Csf Device for measuring the side and elevation angles of an object at a very great distance
DE1191119B (en) * 1953-06-17 1965-04-15 Jean Turck Device for determining the angular deviation of an incident radiation with respect to a reference direction
DE1255185B (en) * 1963-12-21 1967-11-30 Siemens Ag Photoelectric scanning device for the control of machines according to a given line
DE1270826B (en) * 1955-04-06 1968-06-20 Electronique & Physique Device for space scanning
DE977834C (en) * 1960-04-17 1971-07-15 Eltro Gmbh Device for determining the position of the target by coordinates

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1191119B (en) * 1953-06-17 1965-04-15 Jean Turck Device for determining the angular deviation of an incident radiation with respect to a reference direction
DE1270826B (en) * 1955-04-06 1968-06-20 Electronique & Physique Device for space scanning
DE1175003B (en) * 1956-06-26 1964-07-30 Csf Device for measuring the side and elevation angles of an object at a very great distance
DE1143911B (en) * 1958-07-16 1963-02-21 Westinghouse Canada Ltd Automatic copier with photoelectric control
DE977834C (en) * 1960-04-17 1971-07-15 Eltro Gmbh Device for determining the position of the target by coordinates
DE1255185B (en) * 1963-12-21 1967-11-30 Siemens Ag Photoelectric scanning device for the control of machines according to a given line

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