JPH0283531U - - Google Patents

Info

Publication number
JPH0283531U
JPH0283531U JP1988163317U JP16331788U JPH0283531U JP H0283531 U JPH0283531 U JP H0283531U JP 1988163317 U JP1988163317 U JP 1988163317U JP 16331788 U JP16331788 U JP 16331788U JP H0283531 U JPH0283531 U JP H0283531U
Authority
JP
Japan
Prior art keywords
step motor
steps
circuit means
sector
pulse
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.)
Pending
Application number
JP1988163317U
Other languages
English (en)
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 JP1988163317U priority Critical patent/JPH0283531U/ja
Priority to GB8928209A priority patent/GB2226420B/en
Priority to DE3941497A priority patent/DE3941497A1/de
Priority to US07/452,565 priority patent/US5109250A/en
Publication of JPH0283531U publication Critical patent/JPH0283531U/ja
Pending 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
    • 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
    • G03B7/091—Digital circuits
    • G03B7/097—Digital circuits for control of both exposure time and 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
    • G03B7/08—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
    • G03B7/10—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 a servo-motor providing energy to move the setting member
    • 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
    • G03B9/14—Two separate members moving in opposite directions

Landscapes

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

Description

【図面の簡単な説明】
第１図ａ，ｂは、それぞれ本考案に使用するシ
ヤツタ機構の一実施例を示す正面図、及び断面図
、第２図ａ，ｂは、それぞれ本考案に使用するス
テツプモータの一実施例を示す正面図、及び断面
図、第３図は、本考案に係るシヤツタ制御装置の
一実施例をなす装置のブロツク図、第４図は、同
上装置の動作を示す説明図である。 ４……セクター、１２……ステツプモータ、２
３……被写体輝度検出回路、２７……露光量デー
タの記憶回路、２８……正方向ステツプ駆動パル
ス発生回路、２９……逆方向ステツプ駆動パルス
発生回路、３０……パルス切換回路、３１……回
転モード切換カウンタ、３３……ステツプモータ
駆動回路、３７……駆動電圧指定回路、３８……
駆動電圧発生回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 露出作動に際してレンズ開口を形成するセクタ
    ー及び該セクターの開放と閉鎖とを行なう正逆回
    転可能なステツプモータを備えたシヤツタ機構と
    、被写体輝度に応じた露光量を演算する演算回路
    手段と、露光量に応じて前記ステツプモータが回
    動すべきステツプ数を出力する計数手段と、前記
    計数手段からのステツプ数に対応して前記シヤツ
    タ機構の動作特性に同期した駆動電圧又は電流の
    パルスを出力するパルス回路手段と、前記パルス
    回路手段からのパルスに応じて前記モータを正方
    向と逆方向に回動させる駆動手段から成る制御部
    を備えて成るプログラムシヤツタ。
JP1988163317U 1988-12-16 1988-12-16 Pending JPH0283531U (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1988163317U JPH0283531U (ja) 1988-12-16 1988-12-16
GB8928209A GB2226420B (en) 1988-12-16 1989-12-13 Shutter control device
DE3941497A DE3941497A1 (de) 1988-12-16 1989-12-15 Programmierter verschluss
US07/452,565 US5109250A (en) 1988-12-16 1989-12-18 Program shutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988163317U JPH0283531U (ja) 1988-12-16 1988-12-16

Publications (1)

Publication Number Publication Date
JPH0283531U true JPH0283531U (ja) 1990-06-28

Family

ID=15771540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988163317U Pending JPH0283531U (ja) 1988-12-16 1988-12-16

Country Status (4)

Country Link
US (1) US5109250A (ja)
JP (1) JPH0283531U (ja)
DE (1) DE3941497A1 (ja)
GB (1) GB2226420B (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5497208A (en) * 1993-09-10 1996-03-05 Olympus Optical Co., Ltd. Camera having a lens shutter mechanism
JP2002354777A (ja) * 2001-03-23 2002-12-06 Tdk Corp ステッピングモータ
US20080224573A1 (en) * 2007-03-13 2008-09-18 I-Te Chang Step motor
JP5315766B2 (ja) * 2008-04-17 2013-10-16 ペンタックスリコーイメージング株式会社 レンズ交換式カメラの絞り駆動装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57212422A (en) * 1981-06-22 1982-12-27 Polaroid Corp Exposure control
JPS63149631A (ja) * 1986-12-15 1988-06-22 Seikosha Co Ltd プログラムシヤツタ

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1476144A (en) * 1973-11-05 1977-06-10 West Electric Co Programmed shutters
JPS50138829A (ja) * 1974-04-23 1975-11-06
US4782353A (en) * 1984-02-27 1988-11-01 Seikosha Co., Ltd. Stepping motor-driven sector opening/closing device
JPH06103373B2 (ja) * 1984-03-01 1994-12-14 株式会社精工舎 プログラムシヤツタ
JPH0625837B2 (ja) * 1984-05-09 1994-04-06 株式会社精工舎 カメラ用シヤツタ
JPH0740108B2 (ja) * 1984-05-30 1995-05-01 株式会社精工舎 プログラムシヤツタの制御回路
JPS6147935A (ja) * 1984-08-15 1986-03-08 Seiko Koki Kk プログラムシヤツタ
JP2551771B2 (ja) * 1987-04-02 1996-11-06 セイコープレシジョン株式会社 プログラムシヤツタ
JP2585003B2 (ja) * 1987-07-08 1997-02-26 セイコープレシジョン株式会社 マルチプログラムシヤツタ
JP2696527B2 (ja) * 1988-06-24 1998-01-14 セイコープレシジョン株式会社 カメラ用モータ駆動シャッタの駆動方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57212422A (en) * 1981-06-22 1982-12-27 Polaroid Corp Exposure control
JPS63149631A (ja) * 1986-12-15 1988-06-22 Seikosha Co Ltd プログラムシヤツタ

Also Published As

Publication number Publication date
DE3941497A1 (de) 1990-06-21
GB2226420B (en) 1993-02-10
GB2226420A (en) 1990-06-27
US5109250A (en) 1992-04-28
GB8928209D0 (en) 1990-02-14

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