JP2010102085A5 - - Google Patents
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- JP2010102085A5 JP2010102085A5 JP2008272938A JP2008272938A JP2010102085A5 JP 2010102085 A5 JP2010102085 A5 JP 2010102085A5 JP 2008272938 A JP2008272938 A JP 2008272938A JP 2008272938 A JP2008272938 A JP 2008272938A JP 2010102085 A5 JP2010102085 A5 JP 2010102085A5
- Authority
- JP
- Japan
- Prior art keywords
- iris
- opening
- closing operation
- operation amount
- switching
- 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.)
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Claims (12)
相異なる分解能でアイリスの開閉動作を制御する制御手段を備え、
前記制御手段には、前記開閉動作の制御の分解能を、前記アイリスの開口径に対応付けて、前記開口径が小さくなるに従って緻密に切り換える分解能切り換え手段が備えられ、
前記分解能切り換え手段が、
前記開口径が小さくなるにつれて、前記パルス信号のデューティ比の変化に対する前記アイリスの開閉動作が緻密になるように切り換えて前記分解能を緻密にするように構成されている、
ことを特徴とするアイリス制御装置。
An iris control device that applies a pulse signal to the actuator and controls the opening / closing operation of the iris according to the duty ratio of the pulse signal, and includes a control unit that controls the opening / closing operation of the iris with different resolutions,
The control means includes a resolution switching means that switches the resolution of the opening / closing operation in correspondence with the opening diameter of the iris, and switches the opening / closing operation more precisely as the opening diameter becomes smaller.
The resolution switching means is
As the aperture diameter decreases, the iris opening / closing operation with respect to a change in the duty ratio of the pulse signal is switched so as to be dense, and the resolution is dense.
An iris control device characterized by that.
Ｓ極とＮ極とが外面に着磁された誘導子と、
前記誘導子の外面に対向するように配置された駆動コイルと、
前記駆動コイルに駆動用電圧を印加する駆動回路と、
によって構成され、
前記分解能切り換え手段が、
前記駆動用電圧の前記駆動コイルへの供給路上において、所定の抵抗の接続の有無を切り換えて前記駆動コイルに流す電流を切り換えるように構成されている、
ことを特徴とする請求項１に記載のアイリス制御装置。
The actuator is
An inductor having S and N poles magnetized on its outer surface;
A drive coil arranged to face the outer surface of the inductor;
A drive circuit for applying a drive voltage to the drive coil;
Composed by
The resolution switching means is
On the supply path to the drive coil of the drive voltage, it is configured to switch the current flowing through the drive coil by switching the presence or absence of connection of a predetermined resistor.
The iris control device according to claim 1 .
前記センサから出力された電気信号を増幅する増幅手段と、
前記増幅手段で増幅された電気信号に基づいて前記アイリスの開閉動作量を検出する検出手段と、
を備え、
前記増幅手段が、
前記分解能切り換え手段において切り換えされる複数の分解能の夫々毎に、異なる増幅度を備え、
前記分解能が緻密になるに従って前記増幅度を大きくするように構成されている、
ことを特徴とする請求項１又は請求項２に記載のアイリス制御装置。
A sensor that outputs an electrical signal corresponding to the opening / closing operation amount of the iris;
Amplifying means for amplifying the electrical signal output from the sensor;
Detecting means for detecting an opening / closing operation amount of the iris based on the electric signal amplified by the amplifying means;
With
The amplification means is
Each of the plurality of resolutions switched in the resolution switching means has a different amplification degree,
It is configured to increase the amplification degree as the resolution becomes finer.
Iris control device according to claim 1 or claim 2 you wherein a.
ことを特徴とする請求項３に記載のアイリス制御装置。
The amount of change of the electric signal after being amplified through the amplification means is configured to be substantially equal between the plurality of different resolutions with respect to the predetermined operation amount of the iris.
The iris control device according to claim 3 .
前記センサから出力された電気信号を増幅する増幅手段と、
前記増幅手段で増幅された電気信号に基づいて前記アイリスの開閉動作量を検出する検出手段と、
前記アイリス開閉動作量に対する前記センサの感度を切り換える感度切り換え手段を備え、前記感度切り換え手段が、前記分解能が緻密になるに従って前記感度を大きくするように構成されている、
ことを特徴とする請求項１又は請求項２に記載のアイリス制御装置。
A sensor that outputs an electrical signal corresponding to the opening / closing operation amount of the iris;
Amplifying means for amplifying the electrical signal output from the sensor;
Detecting means for detecting an opening / closing operation amount of the iris based on the electric signal amplified by the amplifying means;
Comprising sensitivity switching means for switching the sensitivity of the sensor with respect to the iris opening / closing operation amount, and the sensitivity switching means is configured to increase the sensitivity as the resolution becomes finer.
The iris control device according to claim 1 or 2, characterized by the above.
ことを特徴とする請求項５に記載のアイリス制御装置。
The amount of change in the electrical signal after being switched through the sensitivity switching means with respect to the predetermined operation amount of the iris is configured to be substantially equal between the plurality of different resolutions.
The iris control device according to claim 5 .
相異なる分解能でアイリスの開閉動作を制御する制御ステップと、
前記アイリスの開閉動作の制御の分解能を、前記アイリスの開口径に対応付けて、前記開口径が小さくなるに従って緻密に切り換える分解能切り換えステップと、
を用い、
前記分解能切り換えステップにおいて
前記アイリスの開口径が小さくなるにつれて、前記パルス信号のデューティ比の変化に対する前記アイリスの開閉動作が緻密になるように切り換えて前記分解能を緻密にする、
ことを特徴とするアイリス制御方法。
An iris control method for applying a pulse signal to an actuator and controlling the opening / closing operation of the iris according to a duty ratio of the pulse signal ,
A control step for controlling the opening and closing operation of the iris with different resolutions;
A resolution switching step of switching the iris opening / closing operation in a precise manner in association with the iris opening diameter, and finely switching the opening diameter as it decreases.
Using,
In the resolution switching step
As the aperture diameter of the iris decreases, the resolution is refined by switching so that the opening and closing operation of the iris with respect to a change in the duty ratio of the pulse signal becomes dense.
An iris control method characterized by the above.
Ｓ極とＮ極とが外面に着磁された誘導子と、
前記誘導子の外面に対向するように配置された駆動コイルと、
前記駆動コイルに駆動用電圧を印加する駆動回路と、
を用い、
前記分解能切り換えステップが、
前記駆動用電圧の前記駆動コイルへの供給路上において、所定の抵抗の接続の有無を切り換えて前記駆動コイルに流す電流を切り換える、
ことを特徴とする請求項７に記載のアイリス制御方法。
As the actuator,
An inductor having S and N poles magnetized on its outer surface;
A drive coil arranged to face the outer surface of the inductor;
A drive circuit for applying a drive voltage to the drive coil;
Use
The resolution switching step includes
On the supply path to the drive coil of the drive voltage, the current to be passed through the drive coil is switched by switching the presence or absence of a predetermined resistor.
The iris control method according to claim 7 .
前記アイリス動作量検出ステップを介して検出された電気信号を増幅する増幅ステップと、
前記増幅ステップで増幅された電気信号に基づいて前記アイリスの開閉動作量をフィードバックして制御するフィードバック制御ステップと、を備え、
前記増幅ステップが、
前記分解能切り換えステップにおける複数の分解能の夫々に異なる増幅度を用い、
前記分解能が緻密になるに従って前記増幅度を大きくする、
ことを特徴とする請求項７又は請求項８に記載のアイリス制御方法。
An iris operation amount detection step for outputting an electrical signal corresponding to the iris opening / closing operation amount;
An amplification step for amplifying the electrical signal detected through the iris operation amount detection step;
A feedback control step of feedback-controlling the opening / closing operation amount of the iris based on the electrical signal amplified in the amplification step,
The amplification step comprises:
Using a different amplification degree for each of the plurality of resolutions in the resolution switching step,
Increasing the degree of amplification as the resolution becomes finer,
The iris control method according to claim 7 or 8, wherein
ことを特徴とする請求項９に記載のアイリス制御方法。
The amount of change in the electrical signal after being amplified through the amplification step is substantially equal at the plurality of different resolutions with respect to the predetermined operation amount of the iris.
The iris control method according to claim 9 .
前記アイリス動作量検出ステップを介して検出された電気信号を増幅する増幅ステップと、
前記増幅ステップで増幅された電気信号に基づいて前記アイリスの開閉動作量をフィードバックして制御するフィードバック制御ステップと、
前記アイリス動作量検出ステップの検出感度を切り換える感度切り換えステップと、
を備え、
前記感度切り換えステップが、前記分解能が緻密になるに従って前記感度を大きくすることを特徴とする請求項７又は請求項８に記載のアイリス制御方法。
An iris operation amount detection step for outputting an electrical signal corresponding to the iris opening / closing operation amount;
An amplification step for amplifying the electrical signal detected through the iris operation amount detection step;
A feedback control step of feedback-controlling the opening / closing operation amount of the iris based on the electrical signal amplified in the amplification step;
A sensitivity switching step of switching the detection sensitivity of the iris operation amount detection step;
With
9. The iris control method according to claim 7 , wherein the sensitivity switching step increases the sensitivity as the resolution becomes finer.
ことを特徴とする請求項１１に記載のアイリス制御方法
The amount of change in the electrical signal after being switched through the sensitivity switching step with respect to the predetermined operation amount of the iris is substantially equal between the different resolutions.
The iris control method according to claim 11, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008272938A JP4809415B2 (en) | 2008-10-23 | 2008-10-23 | Iris control device and iris control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008272938A JP4809415B2 (en) | 2008-10-23 | 2008-10-23 | Iris control device and iris control method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2010102085A JP2010102085A (en) | 2010-05-06 |
| JP2010102085A5 true JP2010102085A5 (en) | 2010-10-21 |
| JP4809415B2 JP4809415B2 (en) | 2011-11-09 |
Family
ID=42292790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008272938A Active JP4809415B2 (en) | 2008-10-23 | 2008-10-23 | Iris control device and iris control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4809415B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6560030B2 (en) * | 2015-06-10 | 2019-08-14 | オリンパス株式会社 | Lens unit and aperture control method |
| CN106954028B (en) * | 2017-05-09 | 2023-04-25 | 北京旷视科技有限公司 | Automatic aperture driving circuit and electronic device |
| CN107613220B (en) * | 2017-09-30 | 2023-12-19 | 深圳市艾特智能科技有限公司 | Camera diaphragm driving circuit |
| CN114500863A (en) * | 2022-01-24 | 2022-05-13 | 惠州同为数码科技有限公司 | Motor drive control method for P-IRIS aperture of camera |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3090668B2 (en) * | 1989-10-27 | 2000-09-25 | ソニー株式会社 | Video camera |
| JPH07239492A (en) * | 1994-02-28 | 1995-09-12 | Canon Inc | Exposure controller |
| JP2001008094A (en) * | 1999-06-18 | 2001-01-12 | Canon Inc | Diaphragm control device |
| JP2003224998A (en) * | 2002-01-29 | 2003-08-08 | Canon Electronics Inc | Drive method for stepping motor |
| JP2006243489A (en) * | 2005-03-04 | 2006-09-14 | Canon Inc | Diaphragm value detecting circuit |
-
2008
- 2008-10-23 JP JP2008272938A patent/JP4809415B2/en active Active
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