GB815329A - Improvements in optical range-finders - Google Patents

Improvements in optical range-finders

Info

Publication number
GB815329A
GB815329A GB10580/56A GB1058056A GB815329A GB 815329 A GB815329 A GB 815329A GB 10580/56 A GB10580/56 A GB 10580/56A GB 1058056 A GB1058056 A GB 1058056A GB 815329 A GB815329 A GB 815329A
Authority
GB
United Kingdom
Prior art keywords
range
supporting member
coincidence
combining prism
plate
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
GB10580/56A
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.)
BEACONING OPTICAL AND PREC MAT
Original Assignee
BEACONING OPTICAL AND PREC MAT
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 BEACONING OPTICAL AND PREC MAT filed Critical BEACONING OPTICAL AND PREC MAT
Publication of GB815329A publication Critical patent/GB815329A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/02—Viewfinders
    • G03B13/06—Viewfinders with lenses with or without reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Viewfinders (AREA)

Abstract

815,329. Coincidence rangefinders. BEACONING OPTICAL & PRECISION MATERIALS CO. Ltd. April 6, 1956 [May 21, 1955], No. 10580/56. Class 97(1) A range-finder includes a main body member, a supporting member mounted therein, a combining prism mounted on the supporting member, a pair of co-axial objectives mounted on the supporting member to give two images in a single plane of the same distance object by means of the combining prism, a plane parallel transparent plate for bringing the images into coincidence located between one objective and its focal point, and means for independently mounting the plate for rotation in the body member about an axis perpendicular to the plane of range-finding so as to be out of physical contact with said supporting member. As shown the objectives IL, IR are mounted with the beam combining prism 7 on a support 10 carried by the range-finder casing 11 which mounts end prism 6L, 6R. The plate 3 is mounted on an axis 3a supported by the casing 11 and is rotated by cam 17 and arm 4<SP>1</SP> to effect coincidence, a scale 18 serving to indicate the range. Alternatively the arm 4<SP>1</SP> may be moved directly over an appropriate scale.
GB10580/56A 1955-05-21 1956-04-06 Improvements in optical range-finders Expired GB815329A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA815329X 1955-05-21

Publications (1)

Publication Number Publication Date
GB815329A true GB815329A (en) 1959-06-24

Family

ID=4172562

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10580/56A Expired GB815329A (en) 1955-05-21 1956-04-06 Improvements in optical range-finders

Country Status (1)

Country Link
GB (1) GB815329A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180208A (en) * 1962-06-27 1965-04-27 Martin D Swartz Optical range finding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180208A (en) * 1962-06-27 1965-04-27 Martin D Swartz Optical range finding device

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