GB877934A - Improvements in or relating to telescope and binocular eye pieces - Google Patents
Improvements in or relating to telescope and binocular eye piecesInfo
- 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
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.
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)
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 |
-
1958
- 1958-06-17 GB GB19326/58A patent/GB877934A/en not_active Expired
Cited By (2)
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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