FR2222664B1 - - Google Patents
Info
- Publication number
- FR2222664B1 FR2222664B1 FR7409944A FR7409944A FR2222664B1 FR 2222664 B1 FR2222664 B1 FR 2222664B1 FR 7409944 A FR7409944 A FR 7409944A FR 7409944 A FR7409944 A FR 7409944A FR 2222664 B1 FR2222664 B1 FR 2222664B1
- 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
- G02B15/142—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
-
- 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 +-+
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP48033311A JPS524461B2 (fr) | 1973-03-23 | 1973-03-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2222664A1 FR2222664A1 (fr) | 1974-10-18 |
| FR2222664B1 true FR2222664B1 (fr) | 1976-10-08 |
Family
ID=12383001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7409944A Expired FR2222664B1 (fr) | 1973-03-23 | 1974-03-22 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4033674A (fr) |
| JP (1) | JPS524461B2 (fr) |
| DE (1) | DE2414028C2 (fr) |
| FR (1) | FR2222664B1 (fr) |
| GB (1) | GB1447586A (fr) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54127322A (en) * | 1978-03-27 | 1979-10-03 | Canon Inc | Zoom lens |
| US4525036A (en) * | 1982-03-08 | 1985-06-25 | Tokyo Shibaura Denki Kabushiki Kaisha | Zoom lens |
| JP3088112B2 (ja) * | 1990-10-12 | 2000-09-18 | 旭光学工業株式会社 | ズームレンズ |
| JP3167069B2 (ja) * | 1993-11-30 | 2001-05-14 | キヤノン株式会社 | ズームレンズ |
| US5847882A (en) * | 1994-06-23 | 1998-12-08 | Canon Kabushiki Kaisha | Rear focusing zoom lens |
| JP3521541B2 (ja) * | 1995-03-31 | 2004-04-19 | 株式会社ニコン | ズームレンズ |
| CA2490012C (fr) * | 2002-07-22 | 2009-11-10 | Panavision, Inc. | Systeme d'objectif a focale variable |
| US7283309B2 (en) * | 2004-08-20 | 2007-10-16 | Panavision International, L.P. | Wide-range, wide-angle, rotatable compound zoom |
| US7227682B2 (en) * | 2005-04-08 | 2007-06-05 | Panavision International, L.P. | Wide-range, wide-angle compound zoom with simplified zooming structure |
| US7224535B2 (en) * | 2005-07-29 | 2007-05-29 | Panavision International, L.P. | Zoom lens system |
| US7944611B1 (en) * | 2008-03-29 | 2011-05-17 | Leupold & Stevens, Inc. | High zoom ratio optical sighting device |
| US9479686B2 (en) * | 2014-02-19 | 2016-10-25 | Melvyn H Kreitzer | Zoom lens optical system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3015988A (en) * | 1955-11-25 | 1962-01-09 | Gen Precision Inc | Perspective alteration means |
| NL253793A (fr) * | 1959-07-14 | |||
| JPS402871Y1 (fr) * | 1964-09-24 | 1965-01-27 | ||
| JPS46374Y1 (fr) * | 1966-05-28 | 1971-01-08 | ||
| DE2164937A1 (de) * | 1971-12-28 | 1973-07-05 | Schneider Co Optische Werke | Lichtstarkes objektiv mit veraenderbarer brennweite |
| DD106718A5 (fr) * | 1972-09-14 | 1974-06-20 |
-
1973
- 1973-03-23 JP JP48033311A patent/JPS524461B2/ja not_active Expired
-
1974
- 1974-03-21 US US05/453,507 patent/US4033674A/en not_active Expired - Lifetime
- 1974-03-22 FR FR7409944A patent/FR2222664B1/fr not_active Expired
- 1974-03-22 GB GB1280274A patent/GB1447586A/en not_active Expired
- 1974-03-22 DE DE2414028A patent/DE2414028C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS49122349A (fr) | 1974-11-22 |
| US4033674A (en) | 1977-07-05 |
| GB1447586A (en) | 1976-08-25 |
| JPS524461B2 (fr) | 1977-02-04 |
| FR2222664A1 (fr) | 1974-10-18 |
| DE2414028C2 (de) | 1982-04-22 |
| DE2414028A1 (de) | 1974-10-03 |