DE69318451T2 - Zoomobjektiv mit einer asphärischen Fläche - Google Patents
Zoomobjektiv mit einer asphärischen FlächeInfo
- Publication number
- DE69318451T2 DE69318451T2 DE69318451T DE69318451T DE69318451T2 DE 69318451 T2 DE69318451 T2 DE 69318451T2 DE 69318451 T DE69318451 T DE 69318451T DE 69318451 T DE69318451 T DE 69318451T DE 69318451 T2 DE69318451 T2 DE 69318451T2
- Authority
- DE
- Germany
- Prior art keywords
- zoom lens
- aspherical surface
- aspherical
- zoom
- lens
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
-
- 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
- G02B15/177—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 negative front lens or group of lenses
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 |
---|---|---|---|
JP5144192 | 1992-03-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69318451D1 DE69318451D1 (de) | 1998-06-18 |
DE69318451T2 true DE69318451T2 (de) | 1998-11-12 |
Family
ID=12887019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69318451T Expired - Fee Related DE69318451T2 (de) | 1992-03-10 | 1993-03-10 | Zoomobjektiv mit einer asphärischen Fläche |
Country Status (3)
Country | Link |
---|---|
US (1) | US5321553A (de) |
EP (1) | EP0560597B1 (de) |
DE (1) | DE69318451T2 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2651972B2 (ja) * | 1992-03-04 | 1997-09-10 | 株式会社半導体エネルギー研究所 | 液晶電気光学装置 |
US5805349A (en) * | 1995-10-13 | 1998-09-08 | Nikon Corporation | Retrofocus type lens |
CA2288758C (en) * | 1997-05-05 | 2007-07-17 | Alexander R. Roustaei | Optical scanner and image reader for reading images and decoding optical information including one and two dimensional symbologies at variable depth of field |
US7002755B2 (en) * | 2001-11-26 | 2006-02-21 | Olympus Corporation | Zoom lens, and electronic imaging system using the same |
JP4537114B2 (ja) * | 2004-05-07 | 2010-09-01 | キヤノン株式会社 | ズームレンズ |
US10993318B2 (en) * | 2018-11-24 | 2021-04-27 | Nova Engineering Films, Inc. | Flexible polymeric film including reinforcement layer |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4159865A (en) * | 1975-08-22 | 1979-07-03 | Canon Kabushiki Kaisha | Zoom lens system |
FR2466785A1 (fr) * | 1979-09-28 | 1981-04-10 | Philips Nv | Objectif a focale variable suivant de grands rapports comportant des surfaces aspheriques |
JPS5720713A (en) * | 1980-07-11 | 1982-02-03 | Canon Inc | Zoom lens |
US4999007A (en) * | 1988-01-28 | 1991-03-12 | Olympus Optical Co., Ltd. | Vari-focal lens system |
JPH0827430B2 (ja) * | 1988-03-22 | 1996-03-21 | 株式会社ニコン | 2群ズームレンズ |
JP2836691B2 (ja) * | 1988-09-16 | 1998-12-14 | オリンパス光学工業株式会社 | ズームレンズ |
JP2856464B2 (ja) * | 1989-08-03 | 1999-02-10 | 株式会社リコー | プラスチックズームレンズ |
GB2244819B (en) * | 1990-04-17 | 1994-08-03 | Asahi Optical Co Ltd | Zoom lens system |
-
1993
- 1993-03-05 US US08/026,593 patent/US5321553A/en not_active Expired - Lifetime
- 1993-03-10 EP EP93301832A patent/EP0560597B1/de not_active Expired - Lifetime
- 1993-03-10 DE DE69318451T patent/DE69318451T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0560597B1 (de) | 1998-05-13 |
EP0560597A1 (de) | 1993-09-15 |
US5321553A (en) | 1994-06-14 |
DE69318451D1 (de) | 1998-06-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |