FR2700623B1 - Viseur du type à image réelle. - Google Patents

Viseur du type à image réelle.

Info

Publication number
FR2700623B1
FR2700623B1 FR9400251A FR9400251A FR2700623B1 FR 2700623 B1 FR2700623 B1 FR 2700623B1 FR 9400251 A FR9400251 A FR 9400251A FR 9400251 A FR9400251 A FR 9400251A FR 2700623 B1 FR2700623 B1 FR 2700623B1
Authority
FR
France
Prior art keywords
viewfinder
real image
image type
real
type
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
Application number
FR9400251A
Other languages
English (en)
Other versions
FR2700623A1 (fr
Inventor
Sachio Hasushita
Takayuki Ito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of FR2700623A1 publication Critical patent/FR2700623A1/fr
Application granted granted Critical
Publication of FR2700623B1 publication Critical patent/FR2700623B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • 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
FR9400251A 1993-01-18 1994-01-12 Viseur du type à image réelle. Expired - Fee Related FR2700623B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP624793 1993-01-18

Publications (2)

Publication Number Publication Date
FR2700623A1 FR2700623A1 (fr) 1994-07-22
FR2700623B1 true FR2700623B1 (fr) 1996-05-24

Family

ID=11633172

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9400251A Expired - Fee Related FR2700623B1 (fr) 1993-01-18 1994-01-12 Viseur du type à image réelle.

Country Status (6)

Country Link
US (1) US5434636A (fr)
KR (1) KR100223949B1 (fr)
CN (1) CN1059037C (fr)
DE (1) DE4401364B4 (fr)
FR (1) FR2700623B1 (fr)
GB (1) GB2274342B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPH1073877A (ja) * 1996-09-02 1998-03-17 Asahi Optical Co Ltd カメラのファインダー内表示装置
JPH10133127A (ja) * 1996-10-25 1998-05-22 Nikon Corp 接眼レンズ
KR100222593B1 (ko) * 1996-11-13 1999-11-01 유무성 파인더
JP3326357B2 (ja) * 1997-04-30 2002-09-24 旭光学工業株式会社 実像式ファインダー
US5936775A (en) * 1997-06-17 1999-08-10 Asahi Kogaku Kogyo Kabushiki Kaisha Real-image type optical finder
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
JP3315922B2 (ja) * 1998-04-08 2002-08-19 旭光学工業株式会社 実像式ファインダ光学系
JP3490924B2 (ja) 1999-04-08 2004-01-26 ペンタックス株式会社 実像式変倍ファインダ
US6867917B1 (en) * 1999-11-09 2005-03-15 Pentax Corporation Real-image finder optical system
JP4441197B2 (ja) * 2003-05-08 2010-03-31 オリンパス株式会社 ファインダー光学系及びそれを備えたカメラ
WO2018105710A1 (fr) * 2016-12-09 2018-06-14 コニカミノルタ株式会社 Système optique d'observation

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB868200A (en) * 1956-10-16 1961-05-17 Chicago Aerial Ind Inc Optical lens systems
GB1295214A (fr) * 1970-06-01 1972-11-08
JPS57128326A (en) * 1981-01-31 1982-08-09 Olympus Optical Co Ltd Finder optical system
JP2538525B2 (ja) * 1984-12-27 1996-09-25 キヤノン株式会社 変倍フアインダ−
JPH0658454B2 (ja) * 1985-07-03 1994-08-03 キヤノン株式会社 変倍フアインダ−
JPH01166024A (ja) * 1987-12-22 1989-06-29 Canon Inc 実像式ファインダーのパララツクス調整機構
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
JPH01309019A (ja) * 1988-06-07 1989-12-13 Minolta Camera Co Ltd ファインダー光学系
JP2859275B2 (ja) * 1988-10-26 1999-02-17 旭光学工業株式会社 ズームファインダー
US5095326A (en) * 1988-10-28 1992-03-10 Asahi Kogaku Kogyo K.K. Kepler-type erect image viewfinder and erecting prism
JPH02304409A (ja) * 1989-05-19 1990-12-18 Olympus Optical Co Ltd ファインダー光学系
JPH0325422A (ja) * 1989-06-22 1991-02-04 Minolta Camera Co Ltd カメラのファインダー
US5117247A (en) * 1989-05-24 1992-05-26 Minolta Camera Kabushiki Kaisha Viewfinder optical system compensated in macrophotographic or parallox diopter
JP2647504B2 (ja) * 1989-07-26 1997-08-27 オリンパス光学工業株式会社 実像式変倍ファインダー
US4993819A (en) * 1989-12-06 1991-02-19 Dba Systems, Inc. External gunsight eyepiece attachment
US5191477A (en) * 1990-02-22 1993-03-02 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom finder
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
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
US5250969A (en) * 1990-11-26 1993-10-05 Asahi Kogaku Kogyo Kabushiki Kaisha Dustproof view finder
JPH052139A (ja) * 1990-11-26 1993-01-08 Asahi Optical Co Ltd 正立フアインダー装置

Also Published As

Publication number Publication date
CN1094823A (zh) 1994-11-09
GB2274342B (en) 1996-01-31
CN1059037C (zh) 2000-11-29
DE4401364A1 (de) 1994-07-21
DE4401364B4 (de) 2005-06-16
KR100223949B1 (ko) 1999-10-15
GB9400812D0 (en) 1994-03-16
GB2274342A (en) 1994-07-20
KR940018695A (ko) 1994-08-18
FR2700623A1 (fr) 1994-07-22
US5434636A (en) 1995-07-18

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20060929