FR820815A - Improvements in range finders and similar optical devices - Google Patents

Improvements in range finders and similar optical devices

Info

Publication number
FR820815A
FR820815A FR820815DA FR820815A FR 820815 A FR820815 A FR 820815A FR 820815D A FR820815D A FR 820815DA FR 820815 A FR820815 A FR 820815A
Authority
FR
France
Prior art keywords
optical devices
similar optical
range finders
finders
range
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 FR820815A publication Critical patent/FR820815A/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
    • G01C3/14—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 binocular observation at a single point, e.g. stereoscopic type

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR820815D 1936-07-08 1937-04-19 Improvements in range finders and similar optical devices Expired FR820815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB820815X 1936-07-08

Publications (1)

Publication Number Publication Date
FR820815A true FR820815A (en) 1937-11-19

Family

ID=10529141

Family Applications (1)

Application Number Title Priority Date Filing Date
FR820815D Expired FR820815A (en) 1936-07-08 1937-04-19 Improvements in range finders and similar optical devices

Country Status (1)

Country Link
FR (1) FR820815A (en)

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