JPH0251310U - - Google Patents

Info

Publication number
JPH0251310U
JPH0251310U JP1988130181U JP13018188U JPH0251310U JP H0251310 U JPH0251310 U JP H0251310U JP 1988130181 U JP1988130181 U JP 1988130181U JP 13018188 U JP13018188 U JP 13018188U JP H0251310 U JPH0251310 U JP H0251310U
Authority
JP
Japan
Prior art keywords
cam ring
detecting
zoom lens
aperture
rotation
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.)
Granted
Application number
JP1988130181U
Other languages
English (en)
Other versions
JPH0727450Y2 (ja
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 filed Critical
Priority to JP1988130181U priority Critical patent/JPH0727450Y2/ja
Priority to US07/415,783 priority patent/US5122822A/en
Priority to GB8922190A priority patent/GB2224581B/en
Priority to FR8912910A priority patent/FR2637383B1/fr
Priority to DE3933188A priority patent/DE3933188C2/de
Publication of JPH0251310U publication Critical patent/JPH0251310U/ja
Application granted granted Critical
Publication of JPH0727450Y2 publication Critical patent/JPH0727450Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
    • 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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/085—Analogue circuits for control of aperture
    • 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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/20—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with change of lens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lens Barrels (AREA)
  • Exposure Control For Cameras (AREA)

Description

【図面の簡単な説明】
第１図は本考案のズームレンズの開放Ｆ値の検
出装置の実施例を示すブロツク図、第２Ａ図は開
放Ｆ値と焦点距離の関係の一例を示すグラフ、第
２Ｂ図はパルス発生器に用いる反射板の展開図、
第３図は同機械構成の例を示す斜視図、第４Ａ図
、第４Ｂ図はカムリングが両回動端に回動した状
態を示す正面図である。 １１…ズーム撮影レンズ、１２…カムリング、
１３，１４…ズーミングカム溝、１５…ピニオン
、１９…セクタギヤ、２０…正逆回転モータ、２
１…ズーミングスイツチ、２２…モータ制御回路
、２３…回動端検出スイツチ、２４…回転方向検
知手段、２６…開放Ｆ値演算手段、２７…露出制
御手段、３０…反射板３０、３０ａ…反射部分、
３０ｂ…非反射部分、３１…フオトリフレクタ、
３２…光学式パルス発生器。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 光軸を回転中心とするカムリングと、この
    カムリングの回転により焦点距離を変化させるズ
    ームレンズと、カムリングの回転位置から焦点距
    離および開放Ｆ値を検出する手段とを備えたズー
    ムレンズカメラにおいて、 カムリングの一方の回動端を検出する回動端検
    知手段と； カムリングと固定部材との間に設けられ、該カ
    ムリングの回動に応じてパルスを発生するパルス
    発生器と； カムリングの回転方向を検知する回転方向検知
    手段と； 上記パルス発生器からのパルスを、上記回転方
    向検知手段によるカムリングの回転方向に応じ、
    加算または減算して、上記回動端検知手段による
    カムリングの一方の回動端からの回転位置を検出
    し、その回転位置における対応開放Ｆ値を演算す
    る開放Ｆ値演算手段とを備えたことを特徴とする
    ズームレンズカメラの開放Ｆ値検出装置。 (2) 請求項１において、パルス発生器は、カム
    リングの単位回転角当りの開放Ｆ値の変化率の大
    小に応じて、パルス発生周波数を大小に異ならせ
    るものであるズームレンズカメラの開放Ｆ値検出
    装置。 (3) 請求項２において、パルス発生器は、光学
    式パルス発生器であるズームレンズカメラの開放
    Ｆ値検出装置。
JP1988130181U 1988-10-04 1988-10-04 ズームレンズカメラの開放ｆ値検出装置 Expired - Fee Related JPH0727450Y2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1988130181U JPH0727450Y2 (ja) 1988-10-04 1988-10-04 ズームレンズカメラの開放ｆ値検出装置
US07/415,783 US5122822A (en) 1988-10-04 1989-10-02 Apparatus for detecting open f number in zoom lens camera
GB8922190A GB2224581B (en) 1988-10-04 1989-10-03 Zoom lens assembly
FR8912910A FR2637383B1 (ja) 1988-10-04 1989-10-03
DE3933188A DE3933188C2 (de) 1988-10-04 1989-10-04 Vorrichtung zur Ermittlung der minimalen Blendenzahl in einer Zoomobjektiv-Kamera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988130181U JPH0727450Y2 (ja) 1988-10-04 1988-10-04 ズームレンズカメラの開放ｆ値検出装置

Publications (2)

Publication Number Publication Date
JPH0251310U true JPH0251310U (ja) 1990-04-11
JPH0727450Y2 JPH0727450Y2 (ja) 1995-06-21

Family

ID=15027997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988130181U Expired - Fee Related JPH0727450Y2 (ja) 1988-10-04 1988-10-04 ズームレンズカメラの開放ｆ値検出装置

Country Status (5)

Country Link
US (1) US5122822A (ja)
JP (1) JPH0727450Y2 (ja)
DE (1) DE3933188C2 (ja)
FR (1) FR2637383B1 (ja)
GB (1) GB2224581B (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0534569A (ja) * 1991-07-30 1993-02-12 Asahi Optical Co Ltd ズームカメラ装置
JPH0553170A (ja) * 1991-08-29 1993-03-05 Canon Inc 絞り装置を有する光学機器
DE4131819A1 (de) * 1991-09-20 1993-03-25 Siemens Ag Messeinrichtung zur bestimmung des weges an elektrischen schaltgeraeten
JP2894659B2 (ja) * 1991-11-05 1999-05-24 オリンパス光学工業株式会社 ズームエンコーダ
KR0177977B1 (ko) * 1995-04-14 1999-05-15 이대원 바코드를 이용한 교환 렌즈의 최대/최소 조리개치 검출장치
US5734936A (en) * 1996-01-26 1998-03-31 Asahi Kogaku Kogyo Kabushiki Kaisha Lens shutter type of camera
US5812889A (en) * 1996-01-26 1998-09-22 Asahi Kogaku Kogyo Kabushiki Kaisha Lens guide mechanism of a lens shutter type of camera
KR100322206B1 (ko) * 1996-01-26 2002-07-06 마츠모토 도루 이동렌즈 위치검출장치
AT406800B (de) * 1998-03-09 2000-09-25 Bauer Fritz Steuerungssystem für ein objektiv einer kamera
DE502006003532D1 (de) * 2006-01-17 2009-06-04 Leica Camera Ag Wechselobjektiv mit optisch lesbarer Kennung
US20230160778A1 (en) * 2021-11-19 2023-05-25 Motional Ad Llc Systems and methods for measurement of optical vignetting

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5890622A (ja) * 1981-11-25 1983-05-30 Matsushita Electric Ind Co Ltd ビデオカメラ
JPS60156053A (ja) * 1984-01-25 1985-08-16 Mita Ind Co Ltd 可変倍率光学系におけるレンズ位置設定機構
JPS6339206U (ja) * 1986-08-29 1988-03-14

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1484414A (en) * 1974-05-28 1977-09-01 Schneider Co Optische Werke Adjusting device for variable-focus lenses
JPS5393021A (en) * 1977-01-25 1978-08-15 Minolta Camera Co Ltd Aperture control device in variable power lens
US4239354A (en) * 1979-01-02 1980-12-16 Polaroid Corporation Autofocus movie camera having improved focus response
US4236804A (en) * 1979-07-19 1980-12-02 Nippon Kogaku K.K. Lens information introducing device having corrected extraneous light
JPS56116019A (en) * 1980-02-19 1981-09-11 Asahi Optical Co Ltd Correction system for aperture control of single-lens reflex camera providing interchange of lens and interchangeable lens used for its system
JPS5781220A (en) * 1980-11-10 1982-05-21 Asahi Optical Co Ltd Diaphragm structure body for zoom lens
JPS57188004A (en) * 1981-05-14 1982-11-18 Olympus Optical Co Ltd Automatic focusing zoom lens
US4446526A (en) * 1981-07-02 1984-05-01 Asahi Kogaku Kogyo Kabushiki Kaisha Control circuit for zooming device
US4464040A (en) * 1981-11-26 1984-08-07 Asahi Kogaku Kogyo Kabushiki Kaisha Camera with diaphragm adjustment control
JPS5898627U (ja) * 1981-12-25 1983-07-05 旭光学工業株式会社 絞り目盛を有するレフレツクスズ−ムレンズ鏡筒
US4429973A (en) * 1982-03-08 1984-02-07 Asahi Kogaku Kogyo Kabushiki Kaisha Compensation for diaphragm control for SLR camera
US4639112A (en) * 1982-03-26 1987-01-27 Minolta Camera Kabushiki Kaisha Camera system capable of interchanging its objective lens
JPS60117224A (ja) * 1983-11-29 1985-06-24 Asahi Optical Co Ltd カメラの絞り値手動設定回路
JPH0754391B2 (ja) * 1984-02-14 1995-06-07 オリンパス光学工業株式会社 カメラの露出制御装置
US4750821A (en) * 1984-08-24 1988-06-14 Canon Kabushiki Kaisha Zoom lens assembly
DE3438322A1 (de) * 1984-10-19 1986-04-24 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Verfahren und einrichtung zur uebertragung von signaldaten
JPS62234137A (ja) * 1986-04-04 1987-10-14 Konika Corp カメラのパルス発生装置
JPH0731342B2 (ja) * 1986-06-06 1995-04-10 オリンパス光学工業株式会社 カメラの露出制御装置
DE3810504A1 (de) * 1988-03-28 1989-10-19 Chinon Ind Inc Scharfstellvorrichtung fuer zoomobjektive

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5890622A (ja) * 1981-11-25 1983-05-30 Matsushita Electric Ind Co Ltd ビデオカメラ
JPS60156053A (ja) * 1984-01-25 1985-08-16 Mita Ind Co Ltd 可変倍率光学系におけるレンズ位置設定機構
JPS6339206U (ja) * 1986-08-29 1988-03-14

Also Published As

Publication number Publication date
GB8922190D0 (en) 1989-11-15
FR2637383A1 (ja) 1990-04-06
GB2224581B (en) 1993-02-10
JPH0727450Y2 (ja) 1995-06-21
GB2224581A (en) 1990-05-09
DE3933188A1 (de) 1990-04-05
DE3933188C2 (de) 1994-11-03
FR2637383B1 (ja) 1993-09-24
US5122822A (en) 1992-06-16

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees