JPH0393368A - Blur correction system for camera - Google Patents
Blur correction system for cameraInfo
- Publication number
- JPH0393368A JPH0393368A JP1229192A JP22919289A JPH0393368A JP H0393368 A JPH0393368 A JP H0393368A JP 1229192 A JP1229192 A JP 1229192A JP 22919289 A JP22919289 A JP 22919289A JP H0393368 A JPH0393368 A JP H0393368A
- Authority
- JP
- Japan
- Prior art keywords
- blur
- camera
- shake
- reflector
- microcomputer
- 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
Links
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 241001655798 Taku Species 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000004091 panning Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
- G03B17/17—Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
-
- 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
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0007—Movement of one or more optical elements for control of motion blur
- G03B2205/0023—Movement of one or more optical elements for control of motion blur by tilting or inclining one or more optical elements with respect to the optical axis
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ビデオカメラ，ＶＴＲ一体型カメラ等のカメ
ラにおいて、撮影時に生じるブレを補正するためのカメ
ラのブレ補正方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a camera shake correction method for correcting shake that occurs during photographing in cameras such as video cameras and VTR integrated cameras.
該種ＶＴＲ一体型カメラ等のカメラにおいて，歩きなが
らの撮影やズームの望遠側の撮影などの１
３
場合に、所謂手ブレによって撮像した画面が小刻みに揺
れて画質を低下させるので、この手ブレによる画面ブレ
を防止するための方策が採られることが多い。In cameras such as VTR-integrated cameras, when shooting while walking or shooting at the telephoto end of the zoom, the imaged screen shakes little by little due to so-called camera shake, reducing the image quality. Measures are often taken to prevent screen blur due to
この従来のブレ補正手法は、例えば、「テレビ技術Ｊ：
１９８９年１月号，９７〜９８頁に記載されているよう
に、レンズ系を可動してブレを補正するようになってお
り、第３図にはその動作原理図が示されている。This conventional image stabilization method is described in, for example, "Television Technology J:
As described in the January 1989 issue, pages 97-98, the lens system is moved to correct blurring, and FIG. 3 shows the principle of its operation.
第３図において、５０はレンズ系で、撮像素子（ＣＯＤ
）５１等と一体的に組合わされた撮影ユニットとして，
縦方向と横方向とに回動自在であるように支持機構５２
で保持されている。５３は上記撮影ユニットのヨーイン
グ（左右方向のカメラブレ）を検出するための角速度セ
ンサ、５４は同じく撮影ユニットのピッチング（上下方
向の力メラブレ）を検出するための角速度センサであり
、５５は撮影ユニットをヨーイング方向Ａに馳動するた
めのアクチュエータ、５６は撮影ユニットをピッチング
方向Ｂに岨動するためのアクチュエータである。なお、
５７は光軸を示している．そして撮影に際しては，前記
角速度センサ５３，５４でそれぞれ検出したブレ量及び
ブレ方向を例えばサーボ回路に供給して，該サーボ回路
によって、検出したブレを打ち消す方向にアクチュエー
タ５５．５６を邸動することによりレンズ系５０を動か
して、画面ブレの少ない安定した画像を撮影が出来るよ
うにしていた．
〔発明が解決しようとする課題〕
ところで，従来のカメラのブレ補正方法は上述したよう
に、重量の嵩むレンズ系を馳動するようにしているため
，システムの小型・軽量化や省電力化が困難であるとい
う問題があった．また、ブレ補正のために可動される部
分の慣性質量が大きいため、高速のブレには追従しにく
いという問題もあった。In FIG. 3, 50 is a lens system, and an image sensor (COD
) 51 etc., as a photographing unit that is integrally combined with
The support mechanism 52 is rotatable in the vertical and horizontal directions.
is held in Reference numeral 53 denotes an angular velocity sensor for detecting the yawing (camera shake in the horizontal direction) of the photographing unit, 54 is an angular velocity sensor for detecting pitching (force camera shake in the vertical direction) of the photographing unit, and 55 denotes an angular velocity sensor for detecting the pitching (force camera shake in the vertical direction) of the photographing unit. An actuator 56 is for moving the photographing unit in the yawing direction A, and an actuator 56 is for moving the photographing unit in the pitching direction B. In addition,
57 indicates the optical axis. When photographing, the amount and direction of shake detected by the angular velocity sensors 53 and 54 are supplied to, for example, a servo circuit, and the servo circuit moves the actuators 55 and 56 in a direction to cancel the detected shake. By moving the lens system 50, it is possible to take stable images with less screen shake. [Problem to be solved by the invention] As mentioned above, the conventional camera shake correction method uses a heavy lens system, which makes it difficult to make the system smaller, lighter, and more power efficient. The problem was that it was difficult. Furthermore, since the inertial mass of the parts that are moved for blur correction is large, there is also the problem that it is difficult to follow high-speed blur.
本発明は上記の点に鑑みなされたもので、ブレ補正メカ
ニズムの小型・軽量化と省電力化とを可能とし、また、
高速のブレにも容易に追従可能なカメラのブレ補正方式
を提供することにある。The present invention has been made in view of the above points, and enables the shake correction mechanism to be made smaller and lighter, and to save power.
An object of the present invention is to provide a camera shake correction method that can easily follow even high-speed shakes.
本発明のカメラのブレ補正方式は、上記した目的を達成
するため、被写体をレンズを通して受光部に結像させ、
映像を得るようにしたカメラにおいて，レンズから受光
部に至る光学系の中に、上下，左右に向きを可変できる
反射板を設け，撮影時に生じるブレを打ち消す方向に反
射板を動かすことで、受光部上のブレを補正するように
なされる。In order to achieve the above-mentioned purpose, the camera shake correction method of the present invention focuses an image of a subject on a light receiving section through a lens,
In a camera designed to capture images, a reflector that can be turned vertically and horizontally is installed in the optical system from the lens to the light receiving section, and by moving the reflector in a direction that cancels out the blurring that occurs during shooting, This is done to correct blur on the image.
カメラに設けられた縦揺れ（ピッチング）検出センサ並
びに横揺れ（ヨーイング）検出センサによる検出情報に
基づき、上下方向廃動用アクチュエータ並びに左右方向
能動用アクチュエータが唖動制御されて、撮影時に生じ
るブレを打ち消す方向（ＣＣＤ等の受光部上の映像のず
れを元に戻す方向）に反射板が高速馳動される。よって
、受光部においては、ブレの無いもしくはブレの大幅に
改善された映像を得ることが出来る。また、ブレ補正の
ために可動される反射板は、従来馳動されていた撮影レ
ンズ系に較べてはるかに軽量であり、ブレ補正メカニズ
ムの軽量・小型化が達戊できると共に、高速応答動作が
容易に可能となる。Based on the information detected by the vertical vibration (pitch) detection sensor and the horizontal vibration (yaw) detection sensor installed in the camera, the vertical movement actuator and the horizontal movement active actuator are controlled to cancel the blurring that occurs during shooting. The reflector is moved at high speed in the direction (the direction in which the deviation of the image on the light receiving unit such as the CCD is restored). Therefore, in the light receiving section, it is possible to obtain an image without blur or with significantly reduced blur. In addition, the reflector that is movable for image stabilization is much lighter than the conventional photographic lens system, which has been moved rapidly, making it possible to reduce the weight and size of the image stabilization mechanism, and to achieve high-speed response operation. easily possible.
以下、本発明を第１図及び第２図に示した１実施例によ
って説明する．
第１図は本発明によるブレ補正方式が適用されるカメラ
の要部概略構成図である。同図において、１は撮影レン
ズ系、２は可動反射板、３は固定反射板、４はＣＯＤ等
よりなる受光部（撮像部）で，上記撮影レンズ系１を経
た光５は、可動反射板２，固定反射板３で順次反射され
て受光部４に導かれ、被写体の画像を受光部４に結像さ
せ．画像が映像信号として取り込まれる．
６，７は、カメラ内部の適宜箇所に設置された角速度セ
ンサ等からなる縦揺れ（ピッチング）検出センサ及び横
揺れ（ヨーイング）検出センサで、該両センサ６，７に
よって検出された縦揺れ、横揺れ成分は電気信号として
マイクロコンピュータ８（以下マイコン８と称す）に送
出される。マイコン８は、供給された上記揺れ検出情報
から、その揺れ信号の同期性，大きさ，周波数成分等と
予めケーススタディされたデータとを比較して、検出し
た揺れ（ブレ）が、撮影意図に基づいてパンニングやテ
イルテイングによるカメラの動きか、撮影テクニック上
全く意図されていないブレであるかを判別する。The present invention will be explained below with reference to an embodiment shown in FIGS. 1 and 2. FIG. 1 is a schematic diagram of the main parts of a camera to which the shake correction method according to the present invention is applied. In the figure, 1 is a photographic lens system, 2 is a movable reflector, 3 is a fixed reflector, and 4 is a light receiving section (imaging section) consisting of a COD, etc. The light 5 that has passed through the photographic lens system 1 is transmitted to the movable reflector. 2. The light is sequentially reflected by the fixed reflector 3 and guided to the light receiving section 4, and an image of the subject is formed on the light receiving section 4. The image is captured as a video signal. Reference numerals 6 and 7 denote pitching (pitching) detection sensors and lateral shaking (yawing) detection sensors, which are comprised of angular velocity sensors and the like, installed at appropriate locations inside the camera. The vibration component is sent to a microcomputer 8 (hereinafter referred to as microcomputer 8) as an electrical signal. The microcomputer 8 compares the synchronization, magnitude, frequency components, etc. of the shake signal with case study data from the supplied shake detection information, and determines whether the detected shake (shake) corresponds to the shooting intention. Based on this information, it is determined whether the camera movement is due to panning or tailing, or whether the camera shake is completely unintended due to the shooting technique.
そして，マイコン８が撮影テクニック上意図されていな
いブレと判断すると、該マイコン８は，ブレによって受
光部４上でずれた映像を元の位置に戻す方向に（ブレを
打ち消す方向に）、上下方向廓動用アクチュエータ９並
び，に左右方向関動用アクチュエータ１０を介して前記
可動反射板２を邸動する。これによって、出力映像は画
面ブレのない状態を維持することが出来るようになって
いる。When the microcomputer 8 determines that the camera shake is unintended due to the shooting technique, the microcomputer 8 moves the image that has shifted on the light receiving section 4 due to the camera shake in the vertical direction in the direction of returning it to its original position (in the direction of canceling out the camera shake). The movable reflecting plate 2 is moved via the actuator 9 for rotation and the actuator 10 for lateral movement. This allows the output video to maintain a state without screen blur.
第２図は、上述した可動反射板２の馳動メカニズムの１
例を示す斜視図である。同図に示すように、前記反射板
２はその裏面（反射面と反射側の面）の中央部を、自在
継手１ｌを介して支持部材１２によって保持されており
、この自在継手１ｌに支持された部分を中心に可動反射
板２は全方向に回動自在とされている。また、例えばパ
ルスモータ等よりなる１１ｑ記上下方向馳動用アクチュ
エータ９の出力軸９ａには、該出力軸９ａと直交する短
アーム１３の一端が連結され、該短アーム１３の他端は
長アームｌ４の一端と互いに回動自在であるように連結
され、該長アーム１４の他端が、前記可動反射板２の裏
面の上辺中央部に連結されている。そして、これによっ
て上下方向旺動用アクチュエータ９の回転暉動力が、短
アームｌ３並びに長アーム１４を介して可動反射板２に
伝えられ，可動反射板２が矢印Ｃ方向（上下運動方向に
対応する角度変化方向）に所定角度だけ向きを変化させ
る。一方また、例えばパルスモータ等よりなる前記左右
方向註動用アクチュエータ１０の出力軸１０ａには、該
出力軸１０ａと直交する短アームｌ５の一端が連結され
，該短アーム１５の他端は長アーム１６の一端と互いに
回動自在であるように連結され、該長アームｌ６の他端
が、前記可動反射板２の裏面の左辺中央部に連結されて
いる。そして、これによって左右方向邸動用アクチュエ
ータ１０の回転邸動力が、短アームｌ５並びに長アーム
１６を介して可動反射板２に伝えられ、可動反射板２が
矢印Ｄ方向（左右運動方向に対応する角度変化方向）に
所定角度だけ向きを変化させる。そして、斯様に構成す
ることによって、可動反射板２は，マイコン８の制御下
で、前述したように両アクチュエータ９，１０によって
受光部４上の画像のずれを補正する方向に邸動されるこ
とになる。Figure 2 shows one of the pulsating mechanisms of the movable reflector 2 mentioned above.
It is a perspective view showing an example. As shown in the figure, the center part of the back surface (reflection surface and reflection side surface) of the reflector plate 2 is held by a support member 12 via a universal joint 1l, and is supported by this universal joint 1l. The movable reflector plate 2 is rotatable in all directions around the fixed portion. Further, one end of a short arm 13 perpendicular to the output shaft 9a is connected to the output shaft 9a of the vertical movement actuator 9 11q, which is made of, for example, a pulse motor, and the other end of the short arm 13 is connected to the long arm l4. The long arm 14 is rotatably connected to one end of the long arm 14, and the other end of the long arm 14 is connected to the center of the upper side of the back surface of the movable reflecting plate 2. As a result, the rotational force of the actuator 9 for vertical movement is transmitted to the movable reflector 2 via the short arm l3 and the long arm 14, and the movable reflector 2 moves in the direction of arrow C (an angle corresponding to the vertical movement direction). direction) by a predetermined angle. On the other hand, one end of a short arm l5 perpendicular to the output shaft 10a is connected to the output shaft 10a of the left-right motion actuator 10, which is made of, for example, a pulse motor, and the other end of the short arm 15 is connected to a long arm 16. The long arm l6 is rotatably connected to one end of the long arm l6, and the other end of the long arm l6 is connected to the center of the left side of the back surface of the movable reflecting plate 2. As a result, the rotary force of the left-right movement actuator 10 is transmitted to the movable reflector 2 via the short arm l5 and the long arm 16, and the movable reflector 2 moves in the direction of arrow D (at an angle corresponding to the left-right movement direction). direction) by a predetermined angle. With such a configuration, the movable reflector 2 is moved in the direction to correct the deviation of the image on the light receiving section 4 by both actuators 9 and 10 under the control of the microcomputer 8 as described above. It turns out.
なお、上述した実施例においては、可動反対板２と固定
反射板３とを用いて、映像の左右反転をなくしているが
、受光部４においてこの反転の補正が可能な場合（例え
ば、ビデオカメラにおいて左右の走査を逆方向から行う
こと等が可能な場合）には，固定反射板３を排したより
簡易なメカニズムにすることが可能となる。In the above-described embodiment, the movable opposite plate 2 and the fixed reflector 3 are used to eliminate horizontal reversal of the image, but if this reversal can be corrected in the light receiving section 4 (for example, when the video camera If it is possible to perform left and right scanning from opposite directions), it is possible to use a simpler mechanism that eliminates the fixed reflector 3.
以上のように本発明によれば、従来のように重４
いレンズ系を小刻みに動かすことなく、軽量の反射板を
小刻みに動かしてブレを補正するので、ブレ補正メカニ
ズムの軽量・小型化、及び省電力化コストダウンが可能
となり、また、高速のブレにも容易に追従可能となる。As described above, according to the present invention, blurring is corrected by moving a lightweight reflector in small increments without moving a heavy lens system in small increments as in the conventional method. It also becomes possible to save power and reduce costs, and it also becomes possible to easily follow high-speed vibrations.
さらにまた、レンズ交換が容易なカメラメカニズムを採
ることが出来るという利点もある。Furthermore, there is also the advantage that a camera mechanism that allows easy lens exchange can be adopted.
第１図及び第２図は本発明の１実施例に係り、第ｌ図は
カメラの要部の概略構成を示す説明図、第２図は可動反
射板の駆動メカニズムを示す斜視図、第３図は従来のカ
メラのブレ補正手法を示す説明図である。
１・・・撮影レンズ系、 ２・・・可動反射板、３
・・・固定反射板、 ４・・・受光部、６・・・縦
揺れ検出センサ、７・・・横揺れ検出センサ、８・・・
マイクロコンピュータ（マイコン），９・・・上下方向
駒動用アクチュエー夕、１０・・・左右方向廓動用アク
チュエータ。
拓
／
め
／Ｏ：九方方向κ動別アク１工−７
第２口
Ａタ
第３の
６ｊ1 and 2 relate to one embodiment of the present invention, in which FIG. 1 is an explanatory diagram showing the schematic configuration of the main parts of the camera, FIG. The figure is an explanatory diagram showing a conventional camera shake correction method. 1... Shooting lens system, 2... Movable reflector, 3
...Fixed reflector, 4...Light receiving section, 6...Pitching detection sensor, 7...Rolling vibration detection sensor, 8...
Microcomputer (microcomputer), 9... Actuator for vertical movement of the piece, 10... Actuator for horizontal movement. Taku/Me/O: Nine directions κ motion separate Aku 1-7 2nd mouth Ata 3rd 6j
Claims (1)
得るようにしたカメラにおいて、レンズから受光部に至
る光学系の中に、向きを可変できる反射板を設け、撮影
時に生じるブレを、そのブレを打ち消す方向に前記反射
板を動かすことで前記受光部上のブレを補正して、ブレ
の無いもしくはブレの改善された映像を得ることを特徴
とするカメラのブレ補正方式。1. In a camera that images an object through a lens and focuses it on a light-receiving section to obtain an image, a reflector whose direction can be changed is installed in the optical system from the lens to the light-receiving section to reduce blur that occurs during shooting. A shake correction method for a camera, characterized in that the shake on the light receiving section is corrected by moving the reflector in a direction to cancel the shake, thereby obtaining an image without blur or with improved shake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1229192A JPH0393368A (en) | 1989-09-06 | 1989-09-06 | Blur correction system for camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1229192A JPH0393368A (en) | 1989-09-06 | 1989-09-06 | Blur correction system for camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0393368A true JPH0393368A (en) | 1991-04-18 |
Family
ID=16888248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1229192A Pending JPH0393368A (en) | 1989-09-06 | 1989-09-06 | Blur correction system for camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0393368A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100234314B1 (en) * | 1997-03-05 | 1999-12-15 | 윤종용 | Vibration restrainable apparatus for video camera |
| JP2004219930A (en) * | 2003-01-17 | 2004-08-05 | Minolta Co Ltd | Camera with camera-shake correction function |
| JP2005345665A (en) * | 2004-06-02 | 2005-12-15 | Canon Inc | Drive device for optical element, optical spatial transmission device using the drive device, and lens device |
| JP2007011149A (en) * | 2005-07-01 | 2007-01-18 | Sharp Corp | Reflection angle variable prism and portable apparatus with camera using same |
-
1989
- 1989-09-06 JP JP1229192A patent/JPH0393368A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100234314B1 (en) * | 1997-03-05 | 1999-12-15 | 윤종용 | Vibration restrainable apparatus for video camera |
| JP2004219930A (en) * | 2003-01-17 | 2004-08-05 | Minolta Co Ltd | Camera with camera-shake correction function |
| US7286163B2 (en) | 2003-01-17 | 2007-10-23 | Minolta Co., Ltd. | Image taking device with bent optical system |
| JP2005345665A (en) * | 2004-06-02 | 2005-12-15 | Canon Inc | Drive device for optical element, optical spatial transmission device using the drive device, and lens device |
| JP4689194B2 (en) * | 2004-06-02 | 2011-05-25 | キヤノン株式会社 | OPTICAL ELEMENT DRIVE DEVICE, OPTICAL SPACE TRANSMISSION DEVICE USING THE DRIVE DEVICE, AND LENS DEVICE |
| JP2007011149A (en) * | 2005-07-01 | 2007-01-18 | Sharp Corp | Reflection angle variable prism and portable apparatus with camera using same |
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