FR2638539B1 - Appareil de visee a foyer variable pour appareil de prise de vues - Google Patents
Appareil de visee a foyer variable pour appareil de prise de vuesInfo
- Publication number
- FR2638539B1 FR2638539B1 FR898914178A FR8914178A FR2638539B1 FR 2638539 B1 FR2638539 B1 FR 2638539B1 FR 898914178 A FR898914178 A FR 898914178A FR 8914178 A FR8914178 A FR 8914178A FR 2638539 B1 FR2638539 B1 FR 2638539B1
- Authority
- FR
- France
- Prior art keywords
- variable focus
- viewing
- focus sighting
- sighting
- viewing apparatus
- 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
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/02—Viewfinders
- G03B13/10—Viewfinders adjusting viewfinders field
- G03B13/12—Viewfinders adjusting viewfinders field to compensate for change of camera lens or size of picture
-
- 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
-
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/02—Viewfinders
- G03B13/06—Viewfinders with lenses with or without reflectors
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
-
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2215/00—Special procedures for taking photographs; Apparatus therefor
- G03B2215/05—Combinations of cameras with electronic flash units
- G03B2215/0503—Built-in units
- G03B2215/0507—Pop-up mechanisms
- G03B2215/051—Pop-up mechanisms with movable reflector, e.g. change of illumination angle or illumination direction
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Astronomy & Astrophysics (AREA)
- Lenses (AREA)
- Viewfinders (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988140823U JP2528125Y2 (ja) | 1988-10-28 | 1988-10-28 | レンズシャッタタイプカメラのファインダ装置 |
JP63330466A JP2836783B2 (ja) | 1988-12-27 | 1988-12-27 | ズームファインダー |
JP63330467A JP2796819B2 (ja) | 1988-12-27 | 1988-12-27 | ズームファインダー |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2638539A1 FR2638539A1 (fr) | 1990-05-04 |
FR2638539B1 true FR2638539B1 (fr) | 1992-09-04 |
Family
ID=27318134
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR898914178A Expired - Lifetime FR2638539B1 (fr) | 1988-10-28 | 1989-10-27 | Appareil de visee a foyer variable pour appareil de prise de vues |
FR919106415A Expired - Fee Related FR2660765B1 (fr) | 1988-10-28 | 1991-05-28 | Appareil de visee a foyer variable pour appareil de prise de vues. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR919106415A Expired - Fee Related FR2660765B1 (fr) | 1988-10-28 | 1991-05-28 | Appareil de visee a foyer variable pour appareil de prise de vues. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4992809A (fr) |
DE (1) | DE3935912C2 (fr) |
FR (2) | FR2638539B1 (fr) |
GB (2) | GB2225444B (fr) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE121200T1 (de) | 1986-05-12 | 1995-04-15 | Asahi Optical Co Ltd | Photographisches optisches system und kamera mit einem solchen system. |
US4944030B1 (en) * | 1986-05-12 | 1993-05-25 | Asahi Optical Co Ltd | Lens shutter camera including zoom lens |
US5095326A (en) * | 1988-10-28 | 1992-03-10 | Asahi Kogaku Kogyo K.K. | Kepler-type erect image viewfinder and erecting prism |
US5193030A (en) * | 1988-10-28 | 1993-03-09 | Asahi Kogaku Kogyo K.K. | Zoom finder system |
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 |
JP2881744B2 (ja) * | 1990-02-14 | 1999-04-12 | 旭光学工業株式会社 | 実像式ファインダー |
JP3064337B2 (ja) * | 1990-06-21 | 2000-07-12 | オリンパス光学工業株式会社 | 実像式変倍ファインダー光学系 |
US5216457A (en) * | 1990-08-31 | 1993-06-01 | Ricoh Company, Ltd. | Real image type zoom finder |
JPH052139A (ja) * | 1990-11-26 | 1993-01-08 | Asahi Optical Co Ltd | 正立フアインダー装置 |
US5231534A (en) * | 1991-01-17 | 1993-07-27 | Olympus Optical Co., Ltd. | Real image mode variable magnification finder optical system |
JPH04264411A (ja) * | 1991-02-19 | 1992-09-21 | Asahi Optical Co Ltd | アルバダ式ズームファインダ |
US5335030A (en) * | 1991-09-30 | 1994-08-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | View finder of zoom lens camera |
US5410430A (en) * | 1991-11-25 | 1995-04-25 | Asahi Kogaku Kogyo Kabushiki Kaisha | Variable power view finder |
US5442481A (en) * | 1992-08-18 | 1995-08-15 | Asahi Kogaku Kabushiki Kaisha | Finder optical system in camera |
US5692227A (en) * | 1993-04-05 | 1997-11-25 | Asahi Kogaku Kogyo Kabushiki Kaisha | Viewfinder |
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 |
KR100363958B1 (ko) * | 1995-05-30 | 2003-03-26 | 삼성테크윈 주식회사 | 변배파인더 |
JP3326330B2 (ja) * | 1996-06-06 | 2002-09-24 | 旭光学工業株式会社 | 分岐撮像観察光学系 |
KR100236646B1 (ko) * | 1997-05-21 | 2000-01-15 | 유무성 | 초소형 아포컬 줌 광학계 |
US6259569B1 (en) | 1997-05-28 | 2001-07-10 | Minolta Co., Ltd. | Zoom optical system |
JP3306351B2 (ja) * | 1997-09-29 | 2002-07-24 | 旭光学工業株式会社 | 実像式変倍ファインダー |
JP3680693B2 (ja) | 2000-03-21 | 2005-08-10 | コニカミノルタフォトイメージング株式会社 | 実像式変倍ファインダ |
US7224395B2 (en) * | 2001-03-01 | 2007-05-29 | Olympus Optical Co., Ltd. | Camera having a shutter to cut reverse-incident light from the eyepiece lens |
JP3566698B2 (ja) * | 2002-01-17 | 2004-09-15 | キヤノン株式会社 | ファインダー及びそれを用いた光学機器 |
EP3869256B1 (fr) * | 2018-09-28 | 2024-02-07 | Panasonic Intellectual Property Management Co., Ltd. | Système de lentille de projection et dispositif de projection d'image |
JP7342681B2 (ja) | 2019-12-19 | 2023-09-12 | セイコーエプソン株式会社 | レンズユニット、投写光学系、およびプロジェクター |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB365330A (en) * | 1931-01-24 | 1932-01-21 | Conrad Joseph Beck | Improvements in photographic view finders |
GB521452A (en) * | 1937-12-31 | 1940-05-22 | Suzanne Rosalie Mathot | Sighting device for moving picture cameras |
GB538744A (en) * | 1940-06-21 | 1941-08-14 | Technicolor Motion Picture | Photographic view finder |
DE1239933B (de) * | 1964-02-25 | 1967-05-03 | Olympus Optical Co | Bildsuchersystem fuer einaeugige Spiegelreflexkameras |
US3476011A (en) * | 1965-11-12 | 1969-11-04 | George A Mitchell | Viewfinder including a porro reflecting system |
JPS5243422A (en) * | 1975-10-02 | 1977-04-05 | Fuji Photo Film Co Ltd | Finder for camera of large size picture |
US4462664A (en) * | 1979-10-05 | 1984-07-31 | Vivitar Corporation | Zoom lens |
JPS6078434A (ja) * | 1983-10-05 | 1985-05-04 | Canon Inc | 焦点距離切替式カメラ |
US4526444A (en) * | 1984-04-02 | 1985-07-02 | Polaroid Corporation | Viewfinder apparatus |
US4545655A (en) * | 1984-04-02 | 1985-10-08 | Polaroid Corporation | Optical viewing system |
JP2538525B2 (ja) * | 1984-12-27 | 1996-09-25 | キヤノン株式会社 | 変倍フアインダ− |
JPS61156019A (ja) * | 1984-12-27 | 1986-07-15 | Canon Inc | 変倍フアインダ− |
JPS61200523A (ja) * | 1985-03-01 | 1986-09-05 | Canon Inc | ズ−ムレンズ |
JPS61213817A (ja) * | 1985-03-20 | 1986-09-22 | Ricoh Co Ltd | ズ−ムフアインダ |
US4763998A (en) * | 1985-06-26 | 1988-08-16 | Canon Kabushiki Kaisha | Compact zoom lens |
US4944030B1 (en) * | 1986-05-12 | 1993-05-25 | Asahi Optical Co Ltd | Lens shutter camera including zoom lens |
DE3707205A1 (de) * | 1987-03-05 | 1988-09-15 | Gerd Schulte | Kompaktkamera mit mehreren brennweiten |
JPS63221313A (ja) * | 1987-03-11 | 1988-09-14 | Olympus Optical Co Ltd | ズ−ムフアインダ− |
US4906078A (en) * | 1987-08-12 | 1990-03-06 | Olympus Optical Co., Ltd. | Variable magnification viewfinder |
JP3032860B2 (ja) * | 1996-11-28 | 2000-04-17 | 株式会社ニューギン | パチンコ遊技機用の傾き表示装置 |
-
1989
- 1989-10-26 US US07/426,655 patent/US4992809A/en not_active Ceased
- 1989-10-27 FR FR898914178A patent/FR2638539B1/fr not_active Expired - Lifetime
- 1989-10-27 DE DE3935912A patent/DE3935912C2/de not_active Expired - Fee Related
- 1989-10-27 GB GB8924149A patent/GB2225444B/en not_active Expired - Fee Related
-
1991
- 1991-05-28 FR FR919106415A patent/FR2660765B1/fr not_active Expired - Fee Related
-
1992
- 1992-06-29 GB GB9213749A patent/GB2255420B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2255420A (en) | 1992-11-04 |
FR2638539A1 (fr) | 1990-05-04 |
DE3935912A1 (de) | 1990-05-03 |
GB2225444B (en) | 1993-02-24 |
GB2255420B (en) | 1993-02-24 |
GB2225444A (en) | 1990-05-30 |
FR2660765A1 (fr) | 1991-10-11 |
FR2660765B1 (fr) | 1993-09-03 |
GB9213749D0 (en) | 1992-08-12 |
DE3935912C2 (de) | 1993-11-25 |
US4992809A (en) | 1991-02-12 |
GB8924149D0 (en) | 1989-12-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |
Effective date: 20080630 |