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JPH03276981A - solid state imaging device - Google Patents

solid state imaging device

Info

Publication number
JPH03276981A
JPH03276981AJP2077846AJP7784690AJPH03276981AJP H03276981 AJPH03276981 AJP H03276981AJP 2077846 AJP2077846 AJP 2077846AJP 7784690 AJP7784690 AJP 7784690AJP H03276981 AJPH03276981 AJP H03276981A
Authority
JP
Japan
Prior art keywords
transparent
charge storage
storage elements
refracting plate
imaging device
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
JP2077846A
Other languages
Japanese (ja)
Inventor
Tsuneaki Ishimura
石村 経明
Fumio Watanabe
渡辺 二三男
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co LtdfiledCriticalMatsushita Electric Industrial Co Ltd
Priority to JP2077846ApriorityCriticalpatent/JPH03276981A/en
Publication of JPH03276981ApublicationCriticalpatent/JPH03276981A/en
Pendinglegal-statusCriticalCurrent

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Abstract

PURPOSE:To obtain a video image with high resolution by turning a transparent refraction plate as a step so as to correspond to one over integral number of a distance between adjacent charge storage elements of an image pickup element and synthesizing video signals at each position of the transparent refraction plate. CONSTITUTION:When stepping motors 11,12 are driven at a step angle of 8, the moving quantity (x) of an optical path at a face perpendicular to an optical axis is a specific value. Then every time the drive is implemented in the unit of one over integral number of adjacent charge storage elements 10a, 10b of an adjacent image pickup element 10, a video signal processing circuit 13 fetches a video signal and stores it into a memory, and reads the signal from the memory in the order corresponding to the optical position and synthesizes the signal to one frame pattern and outputs the result. Then the motors 11, 12 are used to move minutely as a step the transparent refraction plates 8, 9 in the vertical and horizontal directions of the pattern for the pickup, then a picture with resolution being a multiple of M of that of the image pickup element 10 is obtained by picking up the adjacent charge storage elements as M equal divisions.

Description

Translated fromJapanese

【発明の詳細な説明】産業上の利用分野本発明は、固体撮像素子を用いて高解像度の画像を得る
固体撮像装置に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a solid-state imaging device that uses a solid-state imaging device to obtain high-resolution images.

従来の技術一般に、固体撮像素子は、画素の各電荷を蓄積し、順次
転送することにより画像を撮像するので、その解像度が
電荷蓄積素子の密度に依存する。
2. Description of the Related Art In general, a solid-state image sensing device captures an image by accumulating each pixel charge and sequentially transferring it, so its resolution depends on the density of the charge storage device.

従来、この固体撮像素子を用いて高解像度の画像を得る
固体撮像装置としては、特開昭60−54576号公報
、特開昭60−77628号公報に示す装置が知られて
おり、その概略構成を第3図に示す。
Conventionally, as a solid-state imaging device that obtains a high-resolution image using this solid-state imaging device, devices shown in Japanese Patent Application Laid-Open No. 60-54576 and Japanese Patent Application Laid-Open No. 60-77628 are known, and the schematic configuration thereof is as follows. is shown in Figure 3.

第3図に示す固体撮像装置においては、レンズ1と撮像
素子3の間に平行平面透明体2が配置されるとともに、
平行平面透明体2を図示実線及び破線で示すように、画
面の垂直方向に駆動するだめの圧電素子6が設けられて
いる。
In the solid-state imaging device shown in FIG. 3, a parallel plane transparent body 2 is arranged between a lens 1 and an image sensor 3, and
As shown by solid lines and broken lines in the drawing, a piezoelectric element 6 is provided to drive the parallel plane transparent body 2 in the direction perpendicular to the screen.

上記構成において、映像信号処理回路4に同期する駆動
回路5によシ圧電素子6を駆動して透明体2を撮像素子
3の画面の垂直方向に微少回動させ、透明体2の屈折率
により電荷蓄積素子3a+3bの間の画素を撮像し、こ
の透明体2の各位置において撮像された画素信号を映像
信号処理回路4によシ合成することにより高解像度の画
像を得るように構成されている。
In the above configuration, the piezoelectric element 6 is driven by the drive circuit 5 synchronized with the video signal processing circuit 4 to slightly rotate the transparent body 2 in the vertical direction of the screen of the image sensor 3. It is configured to image the pixels between the charge storage elements 3a and 3b, and synthesize the imaged pixel signals at each position of the transparent body 2 in the video signal processing circuit 4, thereby obtaining a high-resolution image. .

したがって、上記従来例によれば、通常では撮像素子3
の電荷蓄積素子3a、3bにより撮像されない画像を、
圧電素子6により透明体2を撮像素子3の画面の垂直方
向に微少回動させることにより撮像するので、電荷蓄積
素子3a、3bの間の中央の画素を撮像すれば撮像素子
3の2倍の解像度の画像を得ることができ、まだ、電荷
蓄積素子3a、3bの間を3等分して撮像すれば撮像素
子3の3倍の解像度の画像を得ることができる。
Therefore, according to the above conventional example, normally the image sensor 3
The image not captured by the charge storage elements 3a and 3b of
Since an image is captured by slightly rotating the transparent body 2 in the vertical direction of the screen of the image sensor 3 using the piezoelectric element 6, if the central pixel between the charge storage elements 3a and 3b is imaged, the image capturing area is twice as large as that of the image sensor 3. An image with a resolution three times that of the image sensor 3 can be obtained by dividing the area between the charge storage elements 3a and 3b into three equal parts.

発明が解決しようとする課題しかしながら、上記従来の固体撮像装置では、圧電素子
6によシ平行平面透明体2を駆動するので、次のような
問題点がある。
Problems to be Solved by the Invention However, in the conventional solid-state imaging device described above, since the parallel plane transparent body 2 is driven by the piezoelectric element 6, there are the following problems.

(1)  圧電素子6は、振動を利用して駆動するので
、3倍以上の解像度を得ようとすると、構造が複雑にな
り、また精度も問題となるので、実用上2倍の解像度を
得るのが限度となる。
(1) The piezoelectric element 6 is driven using vibration, so if you try to obtain three times the resolution or more, the structure will become complicated and accuracy will become a problem. is the limit.

(2)平行平面透明体2を静止状態にすることが困難で
あるので、映像信号が劣化し、また、映像信号に同期し
て常時平行平面透明体2を回動させるので、この回動中
に映像信号を得ることになり、したがって、映像信号か
劣化するとともに、駆動機構の寿命が問題となる。
(2) Since it is difficult to keep the parallel plane transparent body 2 in a stationary state, the video signal deteriorates, and since the parallel plane transparent body 2 is constantly rotated in synchronization with the video signal, during this rotation Therefore, the video signal deteriorates and the life of the drive mechanism becomes a problem.

本発明は上記従来の問題点に鑑み、簡単な構造で高解像
度の映像を得ることができる固体撮像装本発明は上記目
的を達成するために、透明屈折板を撮像素子の隣接電荷
蓄積素子の間の距離の整数分の1に対応するようにステ
ップ状に回動させるステッピングモータを設け、透明屈
折板の各位置において撮像素子により撮像された映像信
号を合成するようにしたものである。
In view of the above-mentioned conventional problems, the present invention provides a solid-state imaging device that can obtain high-resolution images with a simple structure.In order to achieve the above-mentioned object, the present invention provides a solid-state imaging device that can obtain high-resolution images with a simple structure. A stepping motor is provided that rotates in steps corresponding to an integer fraction of the distance between the transparent refracting plates, and the video signals captured by the image pickup device at each position of the transparent refracting plate are combined.

作    用本発明は上記構成により、ステッピングモータによシ透
明屈折板を駆動することが電気的に簡単であるので、簡
単な構造で高解像度の映像を得ることができる。
Effects According to the present invention, with the above configuration, it is electrically simple to drive the transparent refracting plate by a stepping motor, and therefore a high-resolution image can be obtained with a simple structure.

実施例以下、図面を参照して本発明の詳細な説明する。第1図
は、本発明に係る固体撮像装置の一実施例を示す構成図
、第2図は、第1図の透明屈折板を示す動作説明図であ
る。
EXAMPLES Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment of a solid-state imaging device according to the present invention, and FIG. 2 is an operation explanatory diagram showing the transparent refracting plate of FIG. 1.

第1図において、7は、被写体からの光を集光するレン
ズであシ、レンズ7の光軸に沿って順次、画面の垂直方
向に回動可能な透明屈折板8と、画面の水平方向に回動
可能な透明屈折板9と、撮像素子10が配置されている
。尚、透明屈折板8.9は、その屈折率をnとし、厚さ
をtとする。
In FIG. 1, 7 is a lens that condenses light from a subject, and sequentially along the optical axis of the lens 7, a transparent refracting plate 8 that can be rotated in the vertical direction of the screen, and a transparent refracting plate 8 that can be rotated in the horizontal direction of the screen. A rotatable transparent refracting plate 9 and an image sensor 10 are arranged. Note that the transparent refractive plate 8.9 has a refractive index of n and a thickness of t.

11は、透明屈折板8を画面の垂直方向にステップ状に
回動させるためのステッピングモータ、12は、透明屈
折板11を画面の水平方向にステップ状に回動させるた
めのステッピングモータである。
11 is a stepping motor for rotating the transparent refracting plate 8 in a stepwise manner in the vertical direction of the screen, and 12 is a stepping motor for rotating the transparent refracting plate 11 in a stepwise manner in the horizontal direction of the screen.

13は、撮f!I素子10によシ撮像された画素信号を
記憶するメモリを備え、この画素信号を後述するように
合成して高解像度の画面の信号を出力する映像信号処理
回路、14は、映像信号処理回路13からの同期信号に
よシ、透明屈折板8.9が撮像素子10の隣接電荷蓄積
素子10a、Job(第2図)の整数分の1単位で回動
するようにステッピングモータ11.12を駆動する回
路である。
13 is shooting f! A video signal processing circuit includes a memory for storing pixel signals imaged by the I element 10, and synthesizes the pixel signals as described later to output a high-resolution screen signal; 14 is a video signal processing circuit; 13, the stepping motor 11.12 is activated so that the transparent refraction plate 8.9 rotates in integer fractions of the adjacent charge storage element 10a of the image sensor 10, Job (FIG. 2). This is the driving circuit.

次に、第2図を参照して上記実施例の動作を説明する。Next, the operation of the above embodiment will be explained with reference to FIG.

第2図において、ステッピングモータ11.12がステ
ップ角度θで回動するように駆動すると、光軸と垂直な
面における光路の移動量Xは、となる。したがって、こ
の回動を隣接撮像素子10の隣接電荷蓄積素子10a、
 10bの整数分の1単位で移動させる毎に映像信号処
理回路13が映像信号を取り込んでメモリに記憶し、光
学上の位置に対応した順序でメモリから読み出し、1フ
レ−ムの画面に合成して出力する。
In FIG. 2, when the stepping motors 11 and 12 are driven to rotate at a step angle θ, the amount of movement X of the optical path in a plane perpendicular to the optical axis is as follows. Therefore, this rotation is applied to the adjacent charge storage element 10a of the adjacent image sensor 10,
The video signal processing circuit 13 captures video signals every time the video signals are moved in integer fractions of 10b, stores them in the memory, reads them out from the memory in an order corresponding to the optical position, and synthesizes them into one frame screen. and output it.

したがって、上記実施例によれば、通常では撮像素子1
0の隣接電荷蓄積素子により撮像されない画像を、ステ
ッピングモータ11.12によシそれぞれ透明屈折板8
.9を画面の垂直方向、水平方向にステップ状に微少移
動させることにより撮像するので、隣接電荷蓄積素子の
間の中央の画素を撮像すれは撮像素子10の2倍の解像
度の画像を得ることができ、また、隣接電荷蓄積素子の
間をM等分して撮像すれば撮像素子10のM倍の解像度
の画像を得ることができる。
Therefore, according to the above embodiment, normally the image sensor 1
The images that are not captured by the adjacent charge storage elements of
.. Since the image is captured by slightly moving the image sensor 9 in steps in the vertical and horizontal directions of the screen, it is possible to obtain an image with twice the resolution of the image sensor 10 by capturing an image of the central pixel between adjacent charge storage elements. Furthermore, if images are taken by dividing the space between adjacent charge storage elements into M equal parts, an image with a resolution M times that of the image sensor 10 can be obtained.

この場合、ステッピングモータ11.12 によりそれ
ぞれ透明屈折板8.9を回動するので、その制御は電気
的に簡単であり、したがって、従来例のような圧電素子
により制御する場合に比べて簡単な構造で高解像度の映
像を得ることができる。
In this case, since the transparent refracting plates 8, 9 are rotated by the stepping motors 11, 12, their control is electrically simple, and therefore easier than controlling with piezoelectric elements as in the conventional example. The structure allows you to obtain high-resolution images.

発明の詳細な説明したように、本発明は、透明屈折板を撮像素子の
隣接電荷蓄積素子の間の距離の整数分の1に対応するよ
うにステップ状に回動させるステッピングモータを設け
、透明屈折板の各位置において撮像素子により撮像され
た映像信号を合成するようにしたので、ステッピングモ
ータにより透明屈折板を駆動することが電気的に簡単で
あり、したがって、簡単な構造で高解像度の映像を得る
ことができる。
DETAILED DESCRIPTION OF THE INVENTION As described in detail, the present invention provides a stepping motor that rotates a transparent refracting plate in steps corresponding to an integer fraction of the distance between adjacent charge storage elements of an image sensor. Since the video signals captured by the image sensor at each position of the refracting plate are combined, it is electrically simple to drive the transparent refracting plate with a stepping motor, and therefore high-resolution images can be produced with a simple structure. can be obtained.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本発明に係る固体撮像装置の一実施例を示す
構成図、第2図は、第1図の透明屈折板を示す動作説明
図、第3図は、従来の固体撮像装置を示す構成図である
。7・・・レンズ、8.9・・・透明屈折板、10 ・撮
像素子、11.12・・・ステッピングモータ、13・
映像信号処理回路、14・・・駆動回路。
FIG. 1 is a configuration diagram showing an embodiment of a solid-state imaging device according to the present invention, FIG. 2 is an operational explanatory diagram showing the transparent refracting plate of FIG. 1, and FIG. 3 is a diagram showing a conventional solid-state imaging device. FIG. 7... Lens, 8.9... Transparent refracting plate, 10 - Image sensor, 11.12... Stepping motor, 13.
Video signal processing circuit, 14... drive circuit.

Claims (2)

Translated fromJapanese
【特許請求の範囲】[Claims](1)撮像素子の光路の前に、光軸と垂直方向の面にお
いて回動可能に配置された透明屈折板と、前記透明屈折
板を前記撮像素子の隣接電荷蓄積素子の間の距離の整数
分の1に対応するようにステップ状に回動させるステッ
ピングモータと、前記透明屈折板の各位置において前記
撮像素子により撮像された映像信号を合成する回路とを
有する固体撮像装置。
(1) A transparent refraction plate rotatably arranged in front of the optical path of the image sensor in a plane perpendicular to the optical axis, and an integer of the distance between the transparent refraction plate and the adjacent charge storage element of the image sensor. A solid-state imaging device comprising: a stepping motor that rotates in steps corresponding to 1/2; and a circuit that synthesizes video signals captured by the imaging element at each position of the transparent refracting plate.
(2)前記透明屈折板は、画面の垂直方向に回動可能な
第1の透明屈折板と、画面の水平方向に回動可能な第2
の透明屈折板を備え、前記ステッピングモータは、前記
第1の透明屈折板を回動させる第1のステッピングモー
タと、前記第2の透明屈折板を回動させる第2のステッ
ピングモータを備えた請求項1記載の固体撮像装置。
(2) The transparent refracting plate includes a first transparent refracting plate that is rotatable in the vertical direction of the screen, and a second transparent refracting plate that is rotatable in the horizontal direction of the screen.
A transparent refracting plate, wherein the stepping motor includes a first stepping motor that rotates the first transparent refracting plate, and a second stepping motor that rotates the second transparent refracting plate. The solid-state imaging device according to item 1.
JP2077846A1990-03-271990-03-27 solid state imaging devicePendingJPH03276981A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP2077846AJPH03276981A (en)1990-03-271990-03-27 solid state imaging device

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP2077846AJPH03276981A (en)1990-03-271990-03-27 solid state imaging device

Publications (1)

Publication NumberPublication Date
JPH03276981Atrue JPH03276981A (en)1991-12-09

Family

ID=13645422

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP2077846APendingJPH03276981A (en)1990-03-271990-03-27 solid state imaging device

Country Status (1)

CountryLink
JP (1)JPH03276981A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US5561460A (en)*1993-06-021996-10-01Hamamatsu Photonics K.K.Solid-state image pick up device having a rotating plate for shifting position of the image on a sensor array
US5831671A (en)*1992-09-101998-11-03Canon Kabushiki KaishaImage blur prevention apparatus utilizing a stepping motor
WO2007025676A1 (en)*2005-08-292007-03-08Gerd StuecklerDigital film camera

Cited By (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US5831671A (en)*1992-09-101998-11-03Canon Kabushiki KaishaImage blur prevention apparatus utilizing a stepping motor
US5561460A (en)*1993-06-021996-10-01Hamamatsu Photonics K.K.Solid-state image pick up device having a rotating plate for shifting position of the image on a sensor array
WO2007025676A1 (en)*2005-08-292007-03-08Gerd StuecklerDigital film camera

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