CH386129A - Système optique à distance focale variable - Google Patents
Système optique à distance focale variableInfo
- Publication number
- CH386129A CH386129A CH221062A CH221062A CH386129A CH 386129 A CH386129 A CH 386129A CH 221062 A CH221062 A CH 221062A CH 221062 A CH221062 A CH 221062A CH 386129 A CH386129 A CH 386129A
- Authority
- CH
- Switzerland
- Prior art keywords
- optical system
- focal length
- variable focal
- length optical
- variable
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/142—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only
- G02B15/1425—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only the first group being negative
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP614261 | 1961-02-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH386129A true CH386129A (fr) | 1964-12-31 |
Family
ID=11630248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH221062A CH386129A (fr) | 1961-02-28 | 1962-02-22 | Système optique à distance focale variable |
Country Status (3)
Country | Link |
---|---|
US (1) | US3143590A (fr) |
CH (1) | CH386129A (fr) |
DE (1) | DE1236817B (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3630599A (en) * | 1970-10-21 | 1971-12-28 | Xerox Corp | Mechanically compensated zoom lens system |
JPS4923912B1 (fr) * | 1970-12-15 | 1974-06-19 | ||
JPS492548A (fr) * | 1972-04-18 | 1974-01-10 | ||
GB1523492A (en) * | 1974-12-28 | 1978-09-06 | Nippon Kogaku Kk | Zoom lens system |
JPS6034734B2 (ja) * | 1975-08-22 | 1985-08-10 | キヤノン株式会社 | ズ−ムレンズ系 |
JPS5232342A (en) * | 1975-09-08 | 1977-03-11 | Canon Inc | Variable magnification optical unit |
US4159165A (en) * | 1976-12-15 | 1979-06-26 | Vivitar Corporation | Zoom lens |
JPS5535334A (en) * | 1978-09-01 | 1980-03-12 | Fuji Photo Optical Co Ltd | Posterior iris zoom lens |
JP2011081185A (ja) * | 2009-10-07 | 2011-04-21 | Olympus Imaging Corp | ズームレンズおよびそれを用いた撮像装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2609727A (en) * | 1948-01-10 | 1952-09-09 | Emel Ets | Object-glass with a variable focal length |
DE1074284B (de) * | 1952-07-22 | 1960-01-28 | Societe dOptiquc et de Mecamque de Haute Precision, Paris | Optisches System veränderlicher Brenn weite |
FR1259007A (fr) * | 1960-03-09 | 1961-04-21 | Chalier & Cie | Objectif à distance focale variable de construction simple |
US3064533A (en) * | 1960-05-16 | 1962-11-20 | Bausch & Lomb | Photographic objective |
-
1962
- 1962-02-14 US US173183A patent/US3143590A/en not_active Expired - Lifetime
- 1962-02-16 DE DEN21219A patent/DE1236817B/de active Pending
- 1962-02-22 CH CH221062A patent/CH386129A/fr unknown
Also Published As
Publication number | Publication date |
---|---|
US3143590A (en) | 1964-08-04 |
DE1236817B (de) | 1967-03-16 |
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