FR2170086B1 - - Google Patents
Info
- Publication number
- FR2170086B1 FR2170086B1 FR7303426A FR7303426A FR2170086B1 FR 2170086 B1 FR2170086 B1 FR 2170086B1 FR 7303426 A FR7303426 A FR 7303426A FR 7303426 A FR7303426 A FR 7303426A FR 2170086 B1 FR2170086 B1 FR 2170086B1
- Authority
- FR
- France
- 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
- G02B15/14—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
- G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/163—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
- G02B15/167—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
- G02B15/173—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +-+
-
- 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
- G02B15/1441—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 positive
- G02B15/144105—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 positive arranged +-+-
-
- 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
- G02B15/1441—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 positive
- G02B15/144113—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 positive arranged +-++
-
- 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
- G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP47011707A JPS5112424B2 (en) | 1972-02-01 | 1972-02-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2170086A1 FR2170086A1 (en) | 1973-09-14 |
| FR2170086B1 true FR2170086B1 (en) | 1975-10-31 |
Family
ID=11785503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7303426A Expired FR2170086B1 (en) | 1972-02-01 | 1973-01-31 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5112424B2 (en) |
| DE (1) | DE2304737C2 (en) |
| FR (1) | FR2170086B1 (en) |
| GB (1) | GB1418731A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51144652A (en) * | 1975-06-06 | 1976-12-11 | Canon Inc | Built-in multiplying factor altering optical system |
| JPS52120850A (en) * | 1976-04-02 | 1977-10-11 | Elmo Co Ltd | Zoom lens having high zoom ratio and large relative aperture |
| JPS5919590Y2 (en) * | 1978-06-06 | 1984-06-06 | 日「鉄」溶接工業株式会社 | Transport and sorting device for coated arc welding rods |
| JP4517422B2 (en) * | 1999-11-24 | 2010-08-04 | 株式会社ニコン | Afocal zoom lens and microscope equipped with the lens |
| JP5603301B2 (en) * | 2011-07-19 | 2014-10-08 | 富士フイルム株式会社 | Variable magnification optical system for projection and projection display device |
| DE102018204155B4 (en) | 2018-03-19 | 2020-01-23 | Carl Zeiss Ag | Variable focal length lens and method for controlling the lens, and telescope and binoculars with such a lens |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3547523A (en) * | 1967-07-13 | 1970-12-15 | Konishiroku Photo Ind | Zoom objective lens system with highly reduced secondary chromatic aberration |
-
1972
- 1972-02-01 JP JP47011707A patent/JPS5112424B2/ja not_active Expired
-
1973
- 1973-01-29 GB GB437673A patent/GB1418731A/en not_active Expired
- 1973-01-31 DE DE2304737A patent/DE2304737C2/en not_active Expired
- 1973-01-31 FR FR7303426A patent/FR2170086B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2170086A1 (en) | 1973-09-14 |
| DE2304737A1 (en) | 1973-08-16 |
| DE2304737C2 (en) | 1982-08-26 |
| GB1418731A (en) | 1975-12-24 |
| JPS4881545A (en) | 1973-10-31 |
| JPS5112424B2 (en) | 1976-04-19 |