JPS6314810B2 - - Google Patents
Info
- Publication number
- JPS6314810B2 JPS6314810B2 JP12608082A JP12608082A JPS6314810B2 JP S6314810 B2 JPS6314810 B2 JP S6314810B2 JP 12608082 A JP12608082 A JP 12608082A JP 12608082 A JP12608082 A JP 12608082A JP S6314810 B2 JPS6314810 B2 JP S6314810B2
- Authority
- JP
- Japan
- Prior art keywords
- field
- sample
- view
- deflection
- movement
- 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.)
- Expired
Links
- 238000010894 electron beam technology Methods 0.000 claims description 14
- 230000000007 visual effect Effects 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000003384 imaging method Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 238000001000 micrograph Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/26—Electron or ion microscopes; Electron or ion diffraction tubes
- H01J37/261—Details
- H01J37/265—Controlling the tube; circuit arrangements adapted to a particular application not otherwise provided, e.g. bright-field-dark-field illumination
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
Description
【発明の詳細な説明】
本発明は透過結像型電子顕微鏡又は走査電子顕
微鏡における視野捜しを容易に行うための装置に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for easily searching a field of view in a transmission imaging electron microscope or a scanning electron microscope.
透過電子顕微鏡においては、試料を透過した電
子線は結像レンズ系によつて螢光板上に結像され
る。この顕微鏡像の視野を移動させるためには、
通常電子線が照射される試料の位置を機械的に移
動する試料移動機構が用いられる。試料移動機構
の操作は手動で、又はパルスモータを用いて行わ
れるが、観察倍率が高くなるに従つて試料移動量
も極めて僅かとなり、振動等を生じさせないよう
に慎重に僅かづつ移動させなければならず、又観
察倍率が低くなるに従つて試料の移動量が増加す
るため、視野移動の操作には少なからぬ時間が必
要であつた。そのため観察試料の目的とする箇所
を捜す所謂視野捜しの操作は、このような視野移
動を何回も繰り返さなければならず、煩わしい操
作であつた。一方、視野移動を行う他の方法とし
て結像レンズ系内の適宜な位置に設けられた偏向
コイルと、該偏向コイルへ試料の特定箇所を透過
した電子線のみを結像レンズ系内の光軸近傍に導
くように偏向電流を供給する手段からなる偏向移
動機構を用いる方法があり、特に高倍率像におけ
る微小な試料移動をスムーズに行う目的に用いら
れている。(詳細は特公昭48−33903号参照)しか
しながら、このような電気的視野移動の方法も観
察倍率が低くなるに従つて、試料透過電子線のな
かでも結像レンズ系光軸から大きく外れた電子線
を使用しなければならず、そのためレンズ収差の
影響による像の歪が大きくなる欠点があるため、
低倍率像における視野捜しに用いられることは殆
んどなかつた。 In a transmission electron microscope, an electron beam transmitted through a sample is imaged onto a phosphor plate by an imaging lens system. In order to move the field of view of this microscope image,
Usually, a sample moving mechanism is used that mechanically moves the position of the sample to which the electron beam is irradiated. The sample movement mechanism is operated manually or by using a pulse motor, but as the observation magnification increases, the amount of sample movement becomes extremely small, and the movement must be done carefully and in small increments to avoid vibrations. Moreover, since the amount of movement of the sample increases as the observation magnification decreases, a considerable amount of time is required to move the field of view. Therefore, the so-called field-of-field search operation for searching for a target location on an observation sample is a troublesome operation, as the field-of-view must be moved many times. On the other hand, another method for moving the field of view is to use a deflection coil provided at an appropriate position within the imaging lens system, and to direct only the electron beam that has passed through a specific part of the sample to the deflection coil on the optical axis within the imaging lens system. There is a method using a deflection movement mechanism consisting of a means for supplying a deflection current so as to guide it to the vicinity, and this method is used especially for the purpose of smoothly moving a minute sample in a high-magnification image. (For details, refer to Japanese Patent Publication No. 48-33903.) However, as the observation magnification decreases, even with this method of electric field movement, electrons that are far away from the optical axis of the imaging lens system in the sample-transmitting electron beam This method requires the use of lines, which has the disadvantage of increasing image distortion due to the effects of lens aberration.
It was almost never used to search the field of view in low-magnification images.
本発明は上述した視野捜し操作の煩わしさを解
消することを目的とするもので、電子顕微鏡の視
野移動を電子線が照射される試料の移動によつて
行なう試料移動機構、及び試料照射電子線又は試
料透過電子線の偏向によつて視野移動を行なう偏
向移動機構を具備する装置において、前記偏向移
動機構を操作して得られた視野の光軸に対する位
置を記憶するための手段と、開始信号発生手段
と、該開始信号発生手段よりの信号の供給に基づ
いて前記偏向移動機構による偏向をオフにすると
共に、前記記憶手段に記憶されている該開始時に
おける前記視野の位置を表わす信号に基づいて前
記得られた視野を再現するように前記試料移動機
構による試料の移動を制御するための手段を備え
たことを特徴としている。 The present invention aims to eliminate the troublesome operation of searching the field of view as described above, and provides a sample moving mechanism that moves the field of view of an electron microscope by moving a sample that is irradiated with an electron beam, and Alternatively, in an apparatus equipped with a deflection movement mechanism that moves the field of view by deflecting an electron beam transmitted through the sample, means for storing the position of the field of view obtained by operating the deflection movement mechanism with respect to the optical axis, and a start signal. generating means, and turning off the deflection by the deflection movement mechanism based on a signal supplied from the start signal generating means, and based on a signal representing the position of the visual field at the time of the start stored in the storage means. The present invention is characterized by comprising means for controlling the movement of the sample by the sample movement mechanism so as to reproduce the obtained field of view.
図面は本発明を透過電子顕微鏡に適用した実施
例装置を示す略図である。図において、1は薄膜
状の試料を表わしており、該試料には電子銃2か
ら出射される電子線3が収束レンズ4によつて平
行な状態で照射される。試料1を透過した電子線
は対物レンズ5、中間レンズ6、投影レンズ7か
らなる結像レンズ系によつて螢光板8上に顕微鏡
像を結像する。この顕微鏡像の像倍率を変化させ
るには倍率指定手段9を操作して結像レンズ系の
レンズ電源10の出力を変化させることによつて
行われるが、顕微鏡像の視野を変えるには図中に
示す操作パネル11のツマミを操作して行う。例
えば、螢光板8上に表示される顕微鏡像をX方向
へ左右へ移動しようとする場合にはツマミ12X
又は13Xを移動量に応じた回数押圧し、Y方向
へ上下移動しようとする場合にはツマミ14Y,
15Yを移動量に応じた回数押圧することによつ
て視野移動の方向と量を指定する。ツマミを押す
ことによつて発生した信号は信号発生回路16を
介して中央制御回路17に送られ、該回路17に
おいて倍率指定手段9からの信号と共に偏向電源
18X,19Yの出力をどの値にするかを演算
し、その結果に基づいて偏向電源18X,19Y
へ制御信号を供給する。偏向電源18X,19Y
は夫々二段の偏向コイル20X,21X及び20
Y,21Yへ直流偏向電流を供給することによつ
て試料1の特定箇所を透過する電子線を中間レン
ズ以下の結像レンズ系の光軸へ導いて螢光板上へ
結像させる。このような電気的視野移動の操作は
前述したように操作が迅速で容易なため、視野捜
しのために何回も視野移動するには極めて都合が
よい。 The drawing is a schematic diagram showing an embodiment of an apparatus in which the present invention is applied to a transmission electron microscope. In the figure, reference numeral 1 represents a thin film sample, onto which an electron beam 3 emitted from an electron gun 2 is irradiated in parallel through a converging lens 4. The electron beam transmitted through the sample 1 forms a microscopic image on a fluorescent plate 8 by an imaging lens system consisting of an objective lens 5, an intermediate lens 6, and a projection lens 7. The image magnification of this microscope image can be changed by operating the magnification specifying means 9 and changing the output of the lens power supply 10 of the imaging lens system. This is done by operating the knobs on the operation panel 11 shown in . For example, if you want to move the microscope image displayed on the fluorescent plate 8 left and right in the X direction, use the knob 12X.
Or press 13X a number of times according to the amount of movement, and if you want to move up and down in the Y direction, press knob 14Y,
By pressing 15Y a number of times according to the amount of movement, the direction and amount of movement of the visual field are designated. The signal generated by pressing the knob is sent to the central control circuit 17 via the signal generating circuit 16, and the circuit 17, together with the signal from the magnification specifying means 9, determines which value the outputs of the deflection power supplies 18X and 19Y should be set to. Based on the result, the deflection power supplies 18X, 19Y
supply control signals to the Deflection power supply 18X, 19Y
are two-stage deflection coils 20X, 21X and 20, respectively.
By supplying a DC deflection current to Y and 21Y, the electron beam passing through a specific part of the sample 1 is guided to the optical axis of the imaging lens system below the intermediate lens, and is imaged onto the phosphor plate. As described above, this electrical visual field movement operation is quick and easy, so it is extremely convenient for moving the visual field many times to search for visual fields.
以上の要領で電気的視野移動による視野捜しの
操作が完了すると、操作パネル11のツマミSを
押圧する。ツマミSを押すことによつて生じた信
号発生回路16からの信号が中央制御回路17に
印加されると、偏向電源18X,19Yへ供給し
ていた信号の値がメモリーに記憶されると共に、
偏向電源18X,19Yへリセツトの信号を供給
して偏向コイル20X,20Y,21X,21Y
による電気的視野移動をオフにする。それと同時
に、前記メモリーに記憶された電気的視野移動に
関する情報を試料移動装置22のX方向駆動用パ
ルスモータ23XとY方向駆動用パルスモータ2
4Yへ供給すべき制御信号に換算してその換算さ
れた制御信号をパルスモータ23X,24Yへ供
給する。この換算は電気的視野移動と試料の機械
的な移動による視野移動の方向と量が一致するよ
うに行われるので、Sボタンを押した直後の短時
間を除けばSボタンを押す前後における螢光板8
上の視野は一定に保たれる。しかしながら顕微鏡
像の歪や収差はボタンSを押す以前よりも改善さ
れたものとなつているので、写真撮影や詳細な肉
眼観察には適したものとなる。 When the visual field search operation by electrical visual field movement is completed in the manner described above, the knob S on the operation panel 11 is pressed. When the signal from the signal generation circuit 16 generated by pressing the knob S is applied to the central control circuit 17, the value of the signal supplied to the deflection power supplies 18X and 19Y is stored in the memory, and
Supplying a reset signal to the deflection power supplies 18X and 19Y, the deflection coils 20X, 20Y, 21X, 21Y
Turn off electrical field movement. At the same time, the information regarding the electrical field of view movement stored in the memory is transferred to the X-direction driving pulse motor 23X and the Y-direction driving pulse motor 2 of the sample moving device 22.
4Y, and the converted control signal is supplied to pulse motors 23X and 24Y. This conversion is performed so that the direction and amount of field movement due to electrical field movement and mechanical movement of the sample match, so excluding the short period immediately after pressing the S button, the fluorescent light before and after pressing the S button is 8
The upper field of view remains constant. However, the distortion and aberration of the microscope image have been improved compared to before pressing button S, making it suitable for photography and detailed observation with the naked eye.
以上のように本発明においては、電子線偏向手
段を用いた視野移動と機械的試料移動を用いた視
野移動の瞬時切換機構を設けたことにより、電子
顕微鏡における視野捜しの操作を迅速且つ容易に
行うことが可能となる。 As described above, in the present invention, by providing an instantaneous switching mechanism for moving the field of view using electron beam deflection means and moving the field of view using mechanical sample movement, the operation of searching the field of view in an electron microscope can be performed quickly and easily. It becomes possible to do so.
図面は本発明の一実施例装置を示す略図であ
る。
1…試料、2…電子銃、3…電子線、4…収束
レンズ、5…対物レンズ、6…中間レンズ、7…
投影レンズ、8…螢光板、9…倍率指定手段、1
0…レンズ電源、11…操作パネル、12X,1
3X,14Y,15Y…ツマミ、16…信号発生
回路、17…中央制御回路、18X,19Y…偏
向電源、20X,20Y,21X,21Y…偏向
コイル、22…試料移動装置、23X,23Y…
パルスモータ。
The drawing is a schematic diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Sample, 2... Electron gun, 3... Electron beam, 4... Converging lens, 5... Objective lens, 6... Intermediate lens, 7...
Projection lens, 8... Fluorescent plate, 9... Magnification specifying means, 1
0...Lens power supply, 11...Operation panel, 12X, 1
3X, 14Y, 15Y...Knob, 16...Signal generation circuit, 17...Central control circuit, 18X, 19Y...Deflection power supply, 20X, 20Y, 21X, 21Y...Deflection coil, 22...Sample moving device, 23X, 23Y...
pulse motor.
Claims (1)
試料の移動によつて行なう試料移動機構、及び試
料照射電子線又は試料透過電子線の偏向によつて
視野移動を行なう偏向移動機構を具備する装置に
おいて、前記偏向移動機構を操作して得られた視
野の光軸に対する位置を記憶するための手段と、
開始信号発生手段と、該開始信号発生手段よりの
信号の供給に基づいて前記偏向移動機構による偏
向をオフにすると共に、前記記憶手段に記憶され
ている該開始時における前記視野の位置を表わす
信号に基づいて前記得られた視野を再現するよう
に前記試料移動機構による試料の移動を制御する
ための手段を備えたことを特徴とする電子顕微鏡
における視野設定装置。1. A device equipped with a sample moving mechanism that moves the field of view of an electron microscope by moving the sample irradiated with an electron beam, and a deflection moving mechanism that moves the field of view by deflecting the electron beam that irradiates the sample or the electron beam that transmits the sample. means for storing the position of the field of view obtained by operating the deflection movement mechanism with respect to the optical axis;
a start signal generating means, and a signal that turns off the deflection by the deflection movement mechanism based on the signal supplied from the start signal generating means, and that represents the position of the visual field at the time of the start, which is stored in the storage means. A field of view setting device for an electron microscope, comprising means for controlling movement of a sample by the sample moving mechanism so as to reproduce the obtained field of view based on the field of view obtained above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12608082A JPS5916256A (en) | 1982-07-20 | 1982-07-20 | Visual field setter in electron microscope |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12608082A JPS5916256A (en) | 1982-07-20 | 1982-07-20 | Visual field setter in electron microscope |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5916256A JPS5916256A (en) | 1984-01-27 |
JPS6314810B2 true JPS6314810B2 (en) | 1988-04-01 |
Family
ID=14926109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12608082A Granted JPS5916256A (en) | 1982-07-20 | 1982-07-20 | Visual field setter in electron microscope |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5916256A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0599064A (en) * | 1991-10-04 | 1993-04-20 | Kubota Corp | Cylinder head of air cooled multiple cylinder overhead-valve engine |
KR20140064084A (en) * | 2012-11-19 | 2014-05-28 | 삼성테크윈 주식회사 | Ionizer system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2673900B2 (en) * | 1988-12-05 | 1997-11-05 | 株式会社日立製作所 | electronic microscope |
JP5084528B2 (en) * | 2008-01-24 | 2012-11-28 | 日本電子株式会社 | Control device and control method for electron microscope |
-
1982
- 1982-07-20 JP JP12608082A patent/JPS5916256A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0599064A (en) * | 1991-10-04 | 1993-04-20 | Kubota Corp | Cylinder head of air cooled multiple cylinder overhead-valve engine |
KR20140064084A (en) * | 2012-11-19 | 2014-05-28 | 삼성테크윈 주식회사 | Ionizer system |
Also Published As
Publication number | Publication date |
---|---|
JPS5916256A (en) | 1984-01-27 |
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