GB877934A - Improvements in or relating to telescope and binocular eye pieces - Google Patents

Improvements in or relating to telescope and binocular eye pieces

Info

Publication number
GB877934A
GB877934A GB19326/58A GB1932658A GB877934A GB 877934 A GB877934 A GB 877934A GB 19326/58 A GB19326/58 A GB 19326/58A GB 1932658 A GB1932658 A GB 1932658A GB 877934 A GB877934 A GB 877934A
Authority
GB
United Kingdom
Prior art keywords
casing
ring
lens
adjusting
tube
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
GB19326/58A
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.)
FRIEDRICH ANDREAS WOEHLER
Original Assignee
FRIEDRICH ANDREAS WOEHLER
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 FRIEDRICH ANDREAS WOEHLER filed Critical FRIEDRICH ANDREAS WOEHLER
Publication of GB877934A publication Critical patent/GB877934A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective
    • G02B15/04—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective by changing a part

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Telescopes (AREA)

Abstract

877,934. Eyepieces. WOEHLER, F. A. June 17, 1958 [June 27, 1957], No. 19326/58. Class 97(1) An optical instrument (e.g. a telescope or binoculars) eye piece comprises an eye lens k and a field lens n axially movable relative to each other to provide variable magnification, said lens having follower members g, h which move in oppositely directed helical slots in an adjusting tube d which is rotatably arranged in a tubular casing c, the lenses being constrained against rotation relative to said casing; for example, the screws follower members may project into a longitudinal slot o in said casing. The adjusting tube may be rotated by a ring p connected to the tube and bearing a scale which is read against a datum mark on a part i<SP>1</SP> on the mount i of lens k. The eyepiece is focused by rotating a ring q attached to the casing c which is adjustably screw-threded in a socket a. The casing may be locked in a particular focusing position by rotating a ring r so that it is brought into frictional engagement with an eccentric interior surface of a skirt q <SP>1</SP> on ring q. When used in binoculars the adjusting tubes d of the pair of eyepieces are provided with two adjusting rings which are connected together by a common central gear wheel. The corresponding slots e, f in the two tubes are oppositely directed.
GB19326/58A 1957-06-27 1958-06-17 Improvements in or relating to telescope and binocular eye pieces Expired GB877934A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE877934X 1957-06-27

Publications (1)

Publication Number Publication Date
GB877934A true GB877934A (en) 1961-09-20

Family

ID=6818294

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19326/58A Expired GB877934A (en) 1957-06-27 1958-06-17 Improvements in or relating to telescope and binocular eye pieces

Country Status (1)

Country Link
GB (1) GB877934A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3202050A (en) * 1961-12-15 1965-08-24 Bausch & Lomb Zoom type of eyepiece for optical instrument
US3540792A (en) * 1968-01-02 1970-11-17 Alfred A Akin Jr Rapid-focus binocular

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3202050A (en) * 1961-12-15 1965-08-24 Bausch & Lomb Zoom type of eyepiece for optical instrument
US3540792A (en) * 1968-01-02 1970-11-17 Alfred A Akin Jr Rapid-focus binocular

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