GB435604A - Improvements in or relating to range-finders - Google Patents

Improvements in or relating to range-finders

Info

Publication number
GB435604A
GB435604A GB987135A GB987135A GB435604A GB 435604 A GB435604 A GB 435604A GB 987135 A GB987135 A GB 987135A GB 987135 A GB987135 A GB 987135A GB 435604 A GB435604 A GB 435604A
Authority
GB
United Kingdom
Prior art keywords
range
instrument
focus lens
variable
pointer
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
GB987135A
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.)
Optische Anstalt CP Goerz AG
Original Assignee
Optische Anstalt CP Goerz AG
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 Optische Anstalt CP Goerz AG filed Critical Optische Anstalt CP Goerz AG
Priority to GB987135A priority Critical patent/GB435604A/en
Publication of GB435604A publication Critical patent/GB435604A/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)
  • Automatic Focus Adjustment (AREA)
  • Measurement Of Optical Distance (AREA)

Abstract

435,604. Range-finders. AKT.-GES. C. P. GOERZ OPTISCHE ANSTALT, Pressburg, Bratislava, Czecho Slovakia, and MAURER, M., Klosterneuburg, Vienna. March 29, 1935, No. 9871. [Class 97 (i)] A device to be secured to each of the light - entrance apertures of a singleobserver rangefinder to enable the instrument to bE used for measuring the distance of an object which is nearer than the lowest range foi which the instrument is graduated, consists of a rotary prism system producing a variable deviation of the incident rays in the plane of triangulation, and a variable focus lens system to enable the images of near objects to be formed in the focal plane of the objectives. The attachment comprises a casing 1 secured within the entrance aperture F and carrying a pair of oppositely directed prisms 2, 3 which can be rotated equally in opposite directions by bevel gearing 4, 5, 6 operated by a knob 8<a> through worm gearing 7, 8. The rotation of the pinion 6 is indicated by a pointer 10. The variable deviation produced by the prisms has the effect of reducing the parallax angle, when observing a near object, to a value corresponding to a point on the scale of the range-finder, and the actual range can be obtained from the reading of this scale and the reading of the pointer 10. The variable focus lens system consists of elements 11, 13, the latter being axially displaceable by turning the externally threaded sleeve 12 which carries it. For practising on a target moving in a path at a fixed distance from the instrument a simple non-rotatable deflecting prism and a fixed focus lens may be used.
GB987135A 1935-03-29 1935-03-29 Improvements in or relating to range-finders Expired GB435604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB987135A GB435604A (en) 1935-03-29 1935-03-29 Improvements in or relating to range-finders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB987135A GB435604A (en) 1935-03-29 1935-03-29 Improvements in or relating to range-finders

Publications (1)

Publication Number Publication Date
GB435604A true GB435604A (en) 1935-09-24

Family

ID=9880309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB987135A Expired GB435604A (en) 1935-03-29 1935-03-29 Improvements in or relating to range-finders

Country Status (1)

Country Link
GB (1) GB435604A (en)

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