CH452219A - Objectif optique à longueur focale variable - Google Patents
Objectif optique à longueur focale variableInfo
- Publication number
- CH452219A CH452219A CH1082366A CH1082366A CH452219A CH 452219 A CH452219 A CH 452219A CH 1082366 A CH1082366 A CH 1082366A CH 1082366 A CH1082366 A CH 1082366A CH 452219 A CH452219 A CH 452219A
- Authority
- CH
- Switzerland
- Prior art keywords
- focal length
- optical lens
- variable focal
- length optical
- variable
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title 1
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
- G02B15/144—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 four groups only
- G02B15/1445—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 four groups only the first group being negative
- G02B15/144507—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 four groups only the first group being negative arranged -++-
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Lens Barrels (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB31812/65A GB1109913A (en) | 1965-07-26 | 1965-07-26 | Improvements in or relating to optical objectives of variable equivalent focal length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH452219A true CH452219A (fr) | 1968-05-31 |
Family
ID=10328788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1082366A CH452219A (fr) | 1965-07-26 | 1966-07-26 | Objectif optique à longueur focale variable |
Country Status (5)
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57138612A (en) * | 1981-02-23 | 1982-08-27 | Nippon Kogaku Kk <Nikon> | Telephotographic zoom lens consisting of four groups |
| JP3088112B2 (ja) * | 1990-10-12 | 2000-09-18 | 旭光学工業株式会社 | ズームレンズ |
| JP3723643B2 (ja) * | 1996-08-12 | 2005-12-07 | ペンタックス株式会社 | 高変倍ズームレンズ系 |
| JPH1054938A (ja) * | 1996-08-12 | 1998-02-24 | Asahi Optical Co Ltd | 大口径非球面ズームレンズ系 |
| JP4208667B2 (ja) | 2002-08-28 | 2009-01-14 | キヤノン株式会社 | ズームレンズおよび撮像装置 |
-
1965
- 1965-07-26 GB GB31812/65A patent/GB1109913A/en not_active Expired
-
1966
- 1966-07-23 DE DE19661497560 patent/DE1497560B1/de active Pending
- 1966-07-26 CH CH1082366A patent/CH452219A/fr unknown
- 1966-07-26 FR FR70939A patent/FR1487806A/fr not_active Expired
- 1966-07-26 NL NL6610525A patent/NL6610525A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1109913A (en) | 1968-04-18 |
| FR1487806A (fr) | 1967-07-07 |
| NL6610525A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1967-01-27 |
| DE1497560B1 (de) | 1971-05-13 |
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