FR925989A - Improvements to range finders, altimeters and other similar optical measuring instruments - Google Patents

Improvements to range finders, altimeters and other similar optical measuring instruments

Info

Publication number
FR925989A
FR925989A FR925989DA FR925989A FR 925989 A FR925989 A FR 925989A FR 925989D A FR925989D A FR 925989DA FR 925989 A FR925989 A FR 925989A
Authority
FR
France
Prior art keywords
altimeters
optical measuring
measuring instruments
similar optical
range finders
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.)
Thales Optronics Ltd
Original Assignee
Thales Optronics 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 Thales Optronics Ltd filed Critical Thales Optronics Ltd
Application granted granted Critical
Publication of FR925989A publication Critical patent/FR925989A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/10—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument
    • G01C3/12—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument with monocular observation at a single point, e.g. coincidence type

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR925989D 1939-11-14 1946-04-24 Improvements to range finders, altimeters and other similar optical measuring instruments Expired FR925989A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB925989X 1939-11-14

Publications (1)

Publication Number Publication Date
FR925989A true FR925989A (en) 1947-09-18

Family

ID=10727777

Family Applications (1)

Application Number Title Priority Date Filing Date
FR925989D Expired FR925989A (en) 1939-11-14 1946-04-24 Improvements to range finders, altimeters and other similar optical measuring instruments

Country Status (1)

Country Link
FR (1) FR925989A (en)

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