DE69412658D1 - Keplersches optisches Zoom-Sucher-System - Google Patents
Keplersches optisches Zoom-Sucher-SystemInfo
- Publication number
- DE69412658D1 DE69412658D1 DE69412658T DE69412658T DE69412658D1 DE 69412658 D1 DE69412658 D1 DE 69412658D1 DE 69412658 T DE69412658 T DE 69412658T DE 69412658 T DE69412658 T DE 69412658T DE 69412658 D1 DE69412658 D1 DE 69412658D1
- Authority
- DE
- Germany
- Prior art keywords
- kepler
- optical zoom
- viewfinder system
- zoom viewfinder
- optical
- 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 - Lifetime
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
- G02B15/177—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
-
- 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
- G02B15/144511—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 -+-+
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/14—Viewfinders
- G02B23/145—Zoom viewfinders
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5030463A JPH06242377A (ja) | 1993-02-19 | 1993-02-19 | ケプラー式変倍ファインダー |
JP5284992A JPH07140387A (ja) | 1993-11-15 | 1993-11-15 | ケプラー式変倍ファインダー |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69412658D1 true DE69412658D1 (de) | 1998-10-01 |
DE69412658T2 DE69412658T2 (de) | 1999-04-29 |
Family
ID=26368815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69412658T Expired - Lifetime DE69412658T2 (de) | 1993-02-19 | 1994-02-18 | Keplersches optisches Zoom-Sucher-System |
Country Status (3)
Country | Link |
---|---|
US (1) | US5687023A (de) |
EP (1) | EP0611976B1 (de) |
DE (1) | DE69412658T2 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3506796B2 (ja) * | 1995-03-14 | 2004-03-15 | オリンパス株式会社 | 実像式変倍ファインダー |
KR100363958B1 (ko) * | 1995-05-30 | 2003-03-26 | 삼성테크윈 주식회사 | 변배파인더 |
KR100382001B1 (ko) * | 1995-12-28 | 2003-08-21 | 삼성테크윈 주식회사 | 실상식 변배 파인더 |
US6038089A (en) | 1996-05-14 | 2000-03-14 | Asahi Kogaku Kogyo Kabushiki Kaisha | Beam shaping optical system |
JPH1048702A (ja) * | 1996-08-07 | 1998-02-20 | Nikon Corp | ケプラー式変倍ファインダー |
JPH10104692A (ja) * | 1996-09-30 | 1998-04-24 | Minolta Co Ltd | 帯電防止ファインダ |
CA2270451A1 (en) * | 1998-06-17 | 1999-12-17 | Wolfgang Weigel | Supplementary optical system for a camera |
JP6898601B2 (ja) * | 2016-12-09 | 2021-07-07 | コニカミノルタ株式会社 | 観察光学系 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB322460A (en) * | 1928-09-04 | 1929-12-04 | Arthur Cyril Webb Aldis | Improvements relating to optical viewing or sighting apparatus |
GB473539A (en) * | 1936-04-16 | 1937-10-15 | Houghton Butcher Mfg Co Ltd | Improvements in and relating to viewing devices especially for aircraft |
DE1276926B (de) * | 1966-12-21 | 1968-09-05 | Leitz Ernst Gmbh | Zwischenabbildungssystem fuer Fernrohre |
US3438689A (en) * | 1967-01-24 | 1969-04-15 | Eastman Kodak Co | Zoom telescopic finder |
DE2122709A1 (de) * | 1971-05-07 | 1972-11-16 | Agfa-Gevaert Ag, 5090 Leverkusen | Kinematografische oder fotografische Kamera mit Spiegelreflexsucher |
JPS54133355A (en) * | 1978-04-07 | 1979-10-17 | Nippon Chemical Ind | Erect type zoom telephoto optical system |
JPS5895315A (ja) * | 1981-11-30 | 1983-06-06 | Minolta Camera Co Ltd | 広角域を含む高変倍率ズ−ムレンズ系 |
JPH0782147B2 (ja) * | 1982-10-21 | 1995-09-06 | キヤノン株式会社 | ズームレンズのフォーカシング方法 |
JP2538525B2 (ja) * | 1984-12-27 | 1996-09-25 | キヤノン株式会社 | 変倍フアインダ− |
JP2676827B2 (ja) * | 1988-09-30 | 1997-11-17 | 松下電器産業株式会社 | 電気湯沸し器 |
US5157550A (en) * | 1989-10-26 | 1992-10-20 | Olympus Optical Co., Ltd. | Vari-focal lens system |
JP3207848B2 (ja) * | 1990-02-09 | 2001-09-10 | 東洋製罐株式会社 | ケプラー式変倍ファインダー |
JP2864407B2 (ja) * | 1990-10-15 | 1999-03-03 | 株式会社ニコン | ケプラー式ズームファインダー光学系 |
US5144480A (en) * | 1990-10-22 | 1992-09-01 | Nikon Corporation | Keplerian zoom finder optical system |
JPH04163415A (ja) * | 1990-10-26 | 1992-06-09 | Canon Inc | 広角ズームレンズ |
US5241337A (en) * | 1991-05-13 | 1993-08-31 | Eastman Kodak Company | Real image viewfinder requiring no field lens |
JP3261716B2 (ja) * | 1992-01-16 | 2002-03-04 | 株式会社ニコン | 逆望遠型大口径広角レンズ |
JPH05297274A (ja) * | 1992-04-16 | 1993-11-12 | Nikon Corp | ケプラー式ズームファインダー光学系 |
JP3387524B2 (ja) * | 1992-07-06 | 2003-03-17 | オリンパス光学工業株式会社 | 変倍ファインダ光学系 |
-
1994
- 1994-02-17 US US08/197,847 patent/US5687023A/en not_active Expired - Lifetime
- 1994-02-18 EP EP94102482A patent/EP0611976B1/de not_active Expired - Lifetime
- 1994-02-18 DE DE69412658T patent/DE69412658T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0611976A1 (de) | 1994-08-24 |
DE69412658T2 (de) | 1999-04-29 |
EP0611976B1 (de) | 1998-08-26 |
US5687023A (en) | 1997-11-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8328 | Change in the person/name/address of the agent |
Free format text: WESER & KOLLEGEN, 81245 MUENCHEN |
|
8364 | No opposition during term of opposition |