GB519022A - Improvements in or connected with rangefinders and like optical observation instruments - Google Patents

Improvements in or connected with rangefinders and like optical observation instruments

Info

Publication number
GB519022A
GB519022A GB2612638A GB2612638A GB519022A GB 519022 A GB519022 A GB 519022A GB 2612638 A GB2612638 A GB 2612638A GB 2612638 A GB2612638 A GB 2612638A GB 519022 A GB519022 A GB 519022A
Authority
GB
United Kingdom
Prior art keywords
eye
piece
axis
range
rangefinders
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
GB2612638A
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
Priority to GB2612638A priority Critical patent/GB519022A/en
Publication of GB519022A publication Critical patent/GB519022A/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)
  • Telescopes (AREA)

Abstract

519,022. Range-finders &c. BARR & STROUD, Ltd., and FRENCH, J. W. Sept. 7, 1938, No. 26126. [Class 97 (i)] In range-finders and other binocular instruments comprising eye-piece systems each rotatable about an eccentric axis for inter ocular adjustment, a radial reflecting device for each eye-piece, and'a projecting lens between each objective field and eye-piece field, the reflecting device is placed at a substantial distance from the eye-piece and at a position where the section of the beam is approximately a minimum. The Fig. shows one eye-piece 1 of a range-finder in a tube C rotatable about an axis D, and carrying, near to a projecting lens 3, a prism 2 directing light from the axis D into the axis E of the eye-piece.
GB2612638A 1938-09-07 1938-09-07 Improvements in or connected with rangefinders and like optical observation instruments Expired GB519022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2612638A GB519022A (en) 1938-09-07 1938-09-07 Improvements in or connected with rangefinders and like optical observation instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2612638A GB519022A (en) 1938-09-07 1938-09-07 Improvements in or connected with rangefinders and like optical observation instruments

Publications (1)

Publication Number Publication Date
GB519022A true GB519022A (en) 1940-03-14

Family

ID=10238793

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2612638A Expired GB519022A (en) 1938-09-07 1938-09-07 Improvements in or connected with rangefinders and like optical observation instruments

Country Status (1)

Country Link
GB (1) GB519022A (en)

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