FR2658924B1 - - Google Patents
Info
- Publication number
- FR2658924B1 FR2658924B1 FR9102139A FR9102139A FR2658924B1 FR 2658924 B1 FR2658924 B1 FR 2658924B1 FR 9102139 A FR9102139 A FR 9102139A FR 9102139 A FR9102139 A FR 9102139A FR 2658924 B1 FR2658924 B1 FR 2658924B1
- 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 - Fee Related
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
- G02B15/143—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 three groups only
- G02B15/1435—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 three groups only the first group being negative
- G02B15/143507—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 three 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4146190 | 1990-02-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2658924A1 FR2658924A1 (fr) | 1991-08-30 |
| FR2658924B1 true FR2658924B1 (US07541385-20090602-C00001.png) | 1994-12-30 |
Family
ID=12609011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9102139A Granted FR2658924A1 (fr) | 1990-02-22 | 1991-02-22 | Viseur zoom. |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US5191477A (US07541385-20090602-C00001.png) |
| DE (1) | DE4105690C2 (US07541385-20090602-C00001.png) |
| FR (1) | FR2658924A1 (US07541385-20090602-C00001.png) |
| GB (1) | GB2241351B (US07541385-20090602-C00001.png) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5191477A (en) * | 1990-02-22 | 1993-03-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom finder |
| JPH052139A (ja) * | 1990-11-26 | 1993-01-08 | Asahi Optical Co Ltd | 正立フアインダー装置 |
| US5621568A (en) * | 1991-05-17 | 1997-04-15 | Asahi Kogaku Kogyo Kabushiki Kaisha | Device for adjusting the diopter setting of a finder assembly |
| GB2282459B (en) * | 1991-11-25 | 1996-07-03 | Asahi Optical Co Ltd | Optical system having a biaspheric lens and an aspheric lens |
| DE4239603B4 (de) * | 1991-11-25 | 2005-04-21 | Pentax Corp. | Reellbildvariosucher |
| GB2261744B (en) * | 1991-11-25 | 1996-07-03 | Asahi Optical Co Ltd | Variable power view finder with aspheric lens surfaces |
| JP3238473B2 (ja) * | 1992-06-30 | 2001-12-17 | 旭光学工業株式会社 | ファインダの視野調整装置 |
| FR2700623B1 (fr) * | 1993-01-18 | 1996-05-24 | Asahi Optical Co Ltd | Viseur du type à image réelle. |
| US5692227A (en) * | 1993-04-05 | 1997-11-25 | Asahi Kogaku Kogyo Kabushiki Kaisha | Viewfinder |
| JP3311090B2 (ja) * | 1993-07-12 | 2002-08-05 | 旭光学工業株式会社 | 実像式ファインダ |
| JPH07174969A (ja) * | 1993-12-17 | 1995-07-14 | Minolta Co Ltd | 変倍ファインダー光学系 |
| CN1071459C (zh) * | 1994-02-04 | 2001-09-19 | 旭光学工业株式会社 | 实象型的可变光焦度取景器 |
| JP3554366B2 (ja) * | 1994-07-29 | 2004-08-18 | ペンタックス株式会社 | 高変倍実像式ファインダー |
| JP3805390B2 (ja) * | 1994-09-05 | 2006-08-02 | オリンパス株式会社 | 実像式変倍ファインダー光学系 |
| JP3425817B2 (ja) * | 1995-01-19 | 2003-07-14 | オリンパス光学工業株式会社 | 接眼レンズ |
| JPH08248316A (ja) * | 1995-03-08 | 1996-09-27 | Nikon Corp | 実像式ズームファインダー |
| JPH1048702A (ja) * | 1996-08-07 | 1998-02-20 | Nikon Corp | ケプラー式変倍ファインダー |
| JP2001264630A (ja) * | 2000-03-22 | 2001-09-26 | Fuji Photo Optical Co Ltd | 実像式ズームファインダ |
| TWI519808B (zh) | 2014-12-05 | 2016-02-01 | 大立光電股份有限公司 | 光學取像透鏡組、取像裝置以及電子裝置 |
| TWI616700B (zh) | 2017-04-17 | 2018-03-01 | 大立光電股份有限公司 | 光學影像擷取鏡頭組、取像裝置及電子裝置 |
| CN106908941B (zh) * | 2017-05-04 | 2022-06-21 | 成都东旺光电有限公司 | 变倍瞄准镜的转像组及变倍瞄准镜 |
Family Cites Families (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5113656B2 (US07541385-20090602-C00001.png) * | 1971-08-13 | 1976-05-01 | ||
| JPS5363014A (en) * | 1976-11-17 | 1978-06-06 | Minolta Camera Co Ltd | Inverse galiled finder of variable magnification type |
| CH613532A5 (US07541385-20090602-C00001.png) * | 1977-04-21 | 1979-09-28 | Bolex Int Sa | |
| JPS559550A (en) * | 1978-07-06 | 1980-01-23 | Canon Inc | Zoom lens system |
| JPS57139758A (en) * | 1981-02-24 | 1982-08-28 | Canon Inc | Camera capable of switching between electronic finder and optical finder |
| US4636040A (en) * | 1982-02-19 | 1987-01-13 | Minolta Camera Kabushiki Kaisha | Zoom lens system |
| US4653887A (en) * | 1984-02-09 | 1987-03-31 | Nippon Kogaku K. K. | Changeable magnification inverted galilean finder |
| JP2538525B2 (ja) * | 1984-12-27 | 1996-09-25 | キヤノン株式会社 | 変倍フアインダ− |
| JPS61167919A (ja) * | 1985-01-21 | 1986-07-29 | Canon Inc | 変倍フアインダ− |
| JPS61213817A (ja) * | 1985-03-20 | 1986-09-22 | Ricoh Co Ltd | ズ−ムフアインダ |
| JP2646350B2 (ja) * | 1986-01-28 | 1997-08-27 | オリンパス光学工業株式会社 | 内視鏡対物レンズ |
| JPH0693072B2 (ja) * | 1986-02-21 | 1994-11-16 | オリンパス光学工業株式会社 | ズ−ムフアインダ− |
| JPS63221313A (ja) * | 1987-03-11 | 1988-09-14 | Olympus Optical Co Ltd | ズ−ムフアインダ− |
| US4936661A (en) * | 1987-07-23 | 1990-06-26 | Opcon Associates, Inc. | Zoom lens with short back focal length |
| US4906078A (en) * | 1987-08-12 | 1990-03-06 | Olympus Optical Co., Ltd. | Variable magnification viewfinder |
| US4838668A (en) * | 1987-10-09 | 1989-06-13 | Eastman Kodak Company | Zoom lens |
| US4828372A (en) * | 1987-10-09 | 1989-05-09 | Eastman Kodak Company | Wide-angle zoom lens |
| US4909614A (en) * | 1987-11-13 | 1990-03-20 | Canon Kabushiki Kaisha | Variable magnification finder |
| JPH01185608A (ja) * | 1988-01-20 | 1989-07-25 | Olympus Optical Co Ltd | 変倍レンズ |
| JP2544427B2 (ja) * | 1988-02-17 | 1996-10-16 | オリンパス光学工業株式会社 | ファインダ―光学系 |
| JP2699394B2 (ja) * | 1988-04-07 | 1998-01-19 | ミノルタ株式会社 | 変倍ファインダー光学系 |
| US5071235A (en) * | 1988-04-15 | 1991-12-10 | Konica Corporation | Small type variable focal length lens |
| US5225927A (en) * | 1988-10-28 | 1993-07-06 | Asahi Kogaku Kogyo K.K. | Real image type finder having cemented lens with at least one resin lens element |
| FR2650402B1 (fr) * | 1989-07-26 | 1993-08-27 | Asahi Optical Co Ltd | Viseur d'appareil photographique avec un prisme correcteur de parallaxe |
| 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 |
| US5221995A (en) * | 1989-08-12 | 1993-06-22 | Asahi Kogaku Kogyo K.K. | Zoom lens system |
| JPH03181909A (ja) * | 1989-12-11 | 1991-08-07 | Canon Inc | ズームレンズ |
| 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 |
| US5191477A (en) * | 1990-02-22 | 1993-03-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom finder |
| JP3231355B2 (ja) * | 1991-07-16 | 2001-11-19 | オリンパス光学工業株式会社 | 小型のズームレンズ |
-
1991
- 1991-02-21 US US07/658,703 patent/US5191477A/en not_active Expired - Lifetime
- 1991-02-22 FR FR9102139A patent/FR2658924A1/fr active Granted
- 1991-02-22 DE DE4105690A patent/DE4105690C2/de not_active Expired - Fee Related
- 1991-02-22 GB GB9103744A patent/GB2241351B/en not_active Expired - Fee Related
-
1992
- 1992-10-20 US US07/963,903 patent/US5309286A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB2241351A (en) | 1991-08-28 |
| GB2241351B (en) | 1994-01-05 |
| DE4105690C2 (de) | 1994-07-28 |
| DE4105690A1 (de) | 1991-08-29 |
| US5191477A (en) | 1993-03-02 |
| FR2658924A1 (fr) | 1991-08-30 |
| US5309286A (en) | 1994-05-03 |
| GB9103744D0 (en) | 1991-04-10 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |
Effective date: 20051031 |