JPH0754756B2 - X-ray observation device - Google Patents
X-ray observation deviceInfo
- Publication number
- JPH0754756B2 JPH0754756B2 JP62010733A JP1073387A JPH0754756B2 JP H0754756 B2 JPH0754756 B2 JP H0754756B2 JP 62010733 A JP62010733 A JP 62010733A JP 1073387 A JP1073387 A JP 1073387A JP H0754756 B2 JPH0754756 B2 JP H0754756B2
- Authority
- JP
- Japan
- Prior art keywords
- ray
- tube
- half mirror
- optical system
- subject
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 19
- 230000004907 flux Effects 0.000 claims description 13
- 238000003384 imaging method Methods 0.000 claims description 13
- 238000004876 x-ray fluorescence Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、被検体のＸ線像をテレビジョンカメラで撮
影して観察するＸ線観察装置に関する。Description: TECHNICAL FIELD The present invention relates to an X-ray observation apparatus for observing an X-ray image of a subject with a television camera.
（従来の技術） 従来、この種のＸ線テレビジョン装置としては第２図に
示すようにＸ線管１を上部に配設したオーバチューブ型
（Ａ）とＸ線管１を下部に配設したアンダチューブ型
（Ｂ）とがあり、これらＸ線による被検体２のＸ線像を
テレビカメラで撮影するＸ線観察装置３がそれぞれ対向
配設されている。(Prior Art) Conventionally, as an X-ray television device of this type, as shown in FIG. 2, an overtube type (A) in which an X-ray tube 1 is arranged in the upper part and an X-ray tube 1 in the lower part are arranged. The under-tube type (B) described above is provided, and the X-ray observing devices 3 for photographing an X-ray image of the subject 2 by these X-rays with a television camera are arranged opposite to each other.
このＸ線観察装置３はＸ線管１から放射されたＸ線は被
検体２を透過し、このＸ線像を入力面５に形成し、これ
を電気的に増幅して出力面６に輝度の高い出力像を形成
する蛍光増倍管４と、テレビジョンモニタに継電される
テレビジョンカメラの撮像管７と、この両管4,7間には
観察用光学系８が介装され、この観察用光学系８は撮像
管７を蛍光増倍管４に対し90°屈曲するため、対物レン
ズ９と撮像レンズ10との間に全反射ミラー11が配設され
ている。また、対物レンズ９と全反射ミラー11との間に
はプリズム13、結像レンズ14、視野絞り15および集光レ
ンズ16とフォトマルチプライヤ17とからなるフォトピッ
クアップ光学系12が配設されている。このフォトピック
アップ光学系12はＸ線による被検体２の所定部分の明る
さを測るため、対物レンズ９を射出した平行光束Ｌの一
部をプリズム13により採光して結像レンズ14により視野
絞り15に結像させた後、集光レンズ16によりフォトマル
チプライヤ17に集光させ、同フォトマルチプライヤ17に
より光電変換した出力信号をＸ線発生制御装置18に入力
し、被検体２に対するＸ線照射量を制御するように構成
されている。In this X-ray observing device 3, the X-rays emitted from the X-ray tube 1 pass through the subject 2 and form this X-ray image on the input surface 5, which is electrically amplified and the brightness is output on the output surface 6. , A fluorescence multiplier tube 4 for forming a high output image, an image pickup tube 7 of a television camera relayed to a television monitor, and an observing optical system 8 interposed between the tubes 4 and 7, Since the observation optical system 8 bends the image pickup tube 7 by 90 ° with respect to the fluorescence multiplier tube 4, a total reflection mirror 11 is arranged between the objective lens 9 and the image pickup lens 10. Further, between the objective lens 9 and the total reflection mirror 11, a photo pickup optical system 12 including a prism 13, an imaging lens 14, a field stop 15, a condenser lens 16 and a photomultiplier 17 is arranged. . Since this photo pickup optical system 12 measures the brightness of a predetermined portion of the subject 2 by X-rays, a part of the parallel light flux L emitted from the objective lens 9 is collected by a prism 13 and a field stop 15 is formed by an imaging lens 14. After the image is focused on, the light is focused on the photomultiplier 17 by the condenser lens 16, and the output signal photoelectrically converted by the photomultiplier 17 is input to the X-ray generation control device 18 to irradiate the subject 2 with X-rays. It is configured to control the quantity.
（解決しようとする問題点） しかしながら、この構成のものでは対物レンズ９からの
平行光束Ｌ内にプリズム13等を配設したものであるか
ら、その部分が影となり、撮影した像の一部が欠けて観
察に支障を与える等の問題点があり、また、対物レンズ
９と全反射ミラー11との間から平行光束Ｌの一部を取出
すものであるから、必然的に対物レンズ９と撮像レンズ
10との距離が長くなって周辺光量を低下する要因となる
等の問題点があった。(Problems to be Solved) However, in this configuration, since the prism 13 and the like are arranged in the parallel light flux L from the objective lens 9, that portion becomes a shadow and a part of the captured image is There is a problem that it is lacking and it hinders observation, and since a part of the parallel light flux L is taken out between the objective lens 9 and the total reflection mirror 11, the objective lens 9 and the imaging lens are inevitably taken.
There is a problem in that the distance from 10 becomes long and it becomes a factor of reducing the peripheral light amount.
（問題点を解決するための手段） 本発明は、上記従来の問題点を解決すべくなされたもの
で、フォトピックアップ光学系に基因する影の発生を防
止し得るとともに、周辺光量の低下を防止することので
きるＸ線観察装置を提供することを目的とし、その要旨
はＸ線による被検体のＸ線蛍光像をテレビジョンカメラ
で撮影して観察するＸ線観察装置であって、蛍光増倍管
と撮像管との間に、同撮像管を前記蛍光増倍管に対し所
定の角度で屈曲するため対物レンズと撮像レンズとの間
にハーフミラーを配設した観察用光学系を配設するとと
もに、前記ハーフミラーの背面側にＸ線発生制御装置に
接続されて前記ハーフミラーを透過した光束の一部を採
光して前記被検体の所定部分の照度を測光するためのフ
ォトピックアップ光学系を配設する構成としたＸ線観察
装置に存する。(Means for Solving Problems) The present invention has been made to solve the above-described conventional problems, and can prevent the generation of shadows due to the photo pickup optical system and prevent the reduction of the peripheral light amount. The object of the present invention is to provide an X-ray observing apparatus capable of performing X-ray observing by using a television camera to observe an X-ray fluorescence image of a subject by X-rays. An observation optical system having a half mirror disposed between the objective lens and the image pickup lens is provided between the tube and the image pickup tube to bend the image pickup tube at a predetermined angle with respect to the fluorescence multiplier tube. At the same time, a photo-pickup optical system connected to the X-ray generation control device on the back side of the half mirror for collecting a part of the light flux transmitted through the half mirror to measure the illuminance of a predetermined part of the subject. Arrangement It exists in the X-ray observation device.
（実施例） 次に、本発明の一実施例を図面にしたがって説明する。
なお、本例におけるＸ線観察装置20の蛍光増倍管４、撮
像管７および観察用光学系８の配列は従来の観察装置３
とほぼ同様に配設されている。すなわち、この観察装置
20において、４は蛍光増倍管であって、Ｘ線管１から放
射されたＸ線は被検体２を透過し、蛍光増倍管４の入力
面５にＸ線像を形成する。このＸ線像は出力面６で輝度
の高い可視光像に変換される。９は対物レンズであっ
て、蛍光増倍管４の出力面６とその焦点面が一致するよ
うに配設されて同対物レンズ９を射出した光束は平行光
束Ｌとなる。この平行光束Ｌを所定の角度（本例では90
°で例示した）で屈曲するための反射ミラーとして反射
率90％、透過率10％のハーフミラー21が配設され、この
ハーフミラー21により屈曲された平行光束Ｌの90％は撮
像レンズ10へ向う。７は撮像管であって、この撮像管７
の入力面7aは撮像レンズ10の焦点面と一致して配設さ
れ、蛍光増倍管４の出力面６に形成された出力像は対物
レンズ９、ハーフミラー21および撮像レンズ10の観察用
光学系８によってテレビカメラの撮像管７に送らけてテ
レビモニタにより観察される。また、ハーフミラー21の
背面側にはフォトピックアップ光学系22が配設されてい
る。この光学系22はハーフミラー21を透過した光束の一
部を採光して視野絞り25へ結像させる結像レンズ23、プ
リズム24と視野絞り25に結像した光を効率よくフォトマ
ルチプライヤ17へ導くための集光レンズ26とプリズム27
とより構成され、フォトマルチプライヤ17は従来と同様
に同フォトマルチプライヤ17により光電変換した出力信
号をＸ線発生制御装置18に入力し、被検体２に対するＸ
線照射量を制御するように構成されている。(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.
The X-ray observing apparatus 20 in this example has the same arrangement of the fluorescence intensifying tube 4, the image pickup tube 7 and the observing optical system 8 as in the conventional observing apparatus 3.
Are arranged almost in the same manner. That is, this observation device
In 20, 4 is a fluorescent multiplier, and the X-rays emitted from the X-ray tube 1 pass through the subject 2 and form an X-ray image on the input surface 5 of the fluorescent multiplier 4. This X-ray image is converted to a visible light image with high brightness on the output surface 6. Reference numeral 9 denotes an objective lens, which is arranged so that the output surface 6 of the fluorescence multiplier tube 4 and its focal plane coincide with each other, and the light flux emitted from the objective lens 9 becomes a parallel light flux L. This parallel light flux L is transmitted at a predetermined angle (90 in this example).
A half mirror 21 having a reflectance of 90% and a transmittance of 10% is provided as a reflecting mirror for bending at (), and 90% of the parallel light flux L bent by the half mirror 21 is directed to the imaging lens 10. Head over. Reference numeral 7 denotes an image pickup tube.
The input surface 7a of the is arranged so as to coincide with the focal plane of the imaging lens 10, and the output image formed on the output surface 6 of the fluorescent multiplier tube 4 is the observation optical of the objective lens 9, the half mirror 21 and the imaging lens 10. It is sent to the image pickup tube 7 of the television camera by the system 8 and observed by the television monitor. A photo pickup optical system 22 is arranged on the back side of the half mirror 21. The optical system 22 collects a part of the light flux transmitted through the half mirror 21 and forms an image on the field stop 25, and the light imaged on the prism 24 and the field stop 25 is efficiently transmitted to the photomultiplier 17. Condensing lens 26 and prism 27 for guiding
The photomultiplier 17 inputs the output signal photoelectrically converted by the photomultiplier 17 into the X-ray generation controller 18 as in the conventional case, and the X-ray for the subject 2 is detected.
It is configured to control the radiation dose.
なお、上記実施例においては平行光束Ｌの屈曲角度を90
°で例示したが、これに限定するものではなく、光学系
の配列構成により所定の角度に選択されるものである。In the above embodiment, the bending angle of the parallel light flux L is 90
However, the present invention is not limited to this and is selected at a predetermined angle depending on the arrangement configuration of the optical system.
（発明の効果） さて、本発明はＸ線による被検体のＸ線蛍光像をテレビ
ジョンカメラで撮影して観察するＸ線観察装置であっ
て、蛍光増倍管と撮像管との間に、同撮像管を蛍光増倍
管に対し所定の角度で屈曲するため対物レンズと撮像レ
ンズとの間にハーフミラーを配設した観察用光学系を配
設するとともに、ハーフミラーの背面側にＸ線発生制御
装置に接続されてハーフミラーを透過した光束の一部を
採光して被検体の所定部分の照度を測光するためのフォ
トピックアップ光学系を配設する構成としたものであ
る。したがって、フォトピックアップ光学系をハーフミ
ラーの背面側に配設したものであるから、対物レンズと
撮像レンズとの間には平行光束を遮るものは何等介在し
ないので、従来装置のようにフォトピックアップの影が
撮影像の一部に写って観察に支障を与えることを解消す
ることができ、対物レンズとハーフミラー、または、ハ
ーフミラーと撮像レンズとの間隔を測光のための部材を
配設するため間隔を広げる必要がなく必要最小限の間隔
とすることができるので撮影像の周辺光量の低下を防止
することができるので、Ｘ線観察装置としてその資する
ところ極めて大である。(Effects of the Invention) The present invention is an X-ray observation apparatus for observing an X-ray fluorescence image of a subject by X-rays by observing it with a television camera. In order to bend the image pickup tube with respect to the fluorescent multiplier tube at a predetermined angle, an observation optical system having a half mirror is provided between the objective lens and the image pickup lens, and an X-ray is provided on the back side of the half mirror. A photo pickup optical system is provided which is connected to the generation control device and collects a part of the light flux transmitted through the half mirror to measure the illuminance of a predetermined portion of the subject. Therefore, since the photo-pickup optical system is arranged on the back side of the half mirror, there is nothing that blocks the parallel light flux between the objective lens and the imaging lens. Since it is possible to solve the problem that the shadow appears in a part of the captured image and interferes with the observation, the distance between the objective lens and the half mirror or the half mirror and the imaging lens is provided with a member for photometry. Since it is not necessary to widen the space and the space can be set to the minimum space required, it is possible to prevent the peripheral light amount of the captured image from being lowered, which is extremely useful as an X-ray observation apparatus.
図面は本発明の一実施例を示し、第１図はＸ線観察装置
の略体配列断面図、第２図（Ａ）（Ｂ）はＸ線テレビジ
ョン装置の態様を示す略体図、第３図は従来のＸ線観察
装置の略体配列断面図である。 １……Ｘ線管、２……被検体 ４……蛍光増倍管、５……入力面 ６……出力面、７……撮像管 ８……観察用光学系、９……対物レンズ 10……撮像レンズ、18……Ｘ線発生制御装置 20……Ｘ線観察装置、21……ハーフミラー 22……フォトピックアップ光学系The drawings show one embodiment of the present invention, FIG. 1 is a schematic sectional view of an X-ray observing apparatus, and FIGS. 2A and 2B are schematic drawing showing an aspect of an X-ray television apparatus. FIG. 3 is a cross-sectional view of a conventional X-ray observing device arranged in a body. 1 ... X-ray tube, 2 ... Subject 4 ... Fluorescence multiplier tube, 5 ... Input surface 6 ... Output surface, 7 ... Imaging tube 8 ... Observation optical system, 9 ... Objective lens 10 ...... Imaging lens, 18 ...... X-ray generation control device 20 ...... X-ray observation device, 21 ...... Half mirror 22 ...... Photo pickup optical system
Claims (1)
ョンカメラで撮影して観察するＸ線観察装置であって、
蛍光増倍管と撮像管との間に、同撮像管を前記蛍光増倍
管に対し所定の角度で屈曲するため対物レンズと撮像レ
ンズとの間にハーフミラーを配設した観察用光学系を配
設するとともに、前記ハーフミラーの背面側にＸ線発生
制御装置に接続されて前記ハーフミラーを透過した光束
の一部を採光して前記被検体の所定部分の照度を測光す
るためのフォトピックアップ光学系を配設する構成とし
たことを特徴とするＸ線観察装置。1. An X-ray observing apparatus for observing an X-ray fluorescence image of a subject by X-rays by a television camera.
An observation optical system in which a half mirror is provided between the objective lens and the imaging lens in order to bend the imaging tube at a predetermined angle with respect to the fluorescence intensifying tube between the fluorescence intensifying tube and the imaging tube. A photo pickup that is arranged and connected to an X-ray generation controller on the back side of the half mirror to collect a part of the light flux transmitted through the half mirror to measure the illuminance of a predetermined part of the subject. An X-ray observation apparatus having a configuration in which an optical system is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62010733A JPH0754756B2 (en) | 1987-01-20 | 1987-01-20 | X-ray observation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62010733A JPH0754756B2 (en) | 1987-01-20 | 1987-01-20 | X-ray observation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63178499A JPS63178499A (en) | 1988-07-22 |
| JPH0754756B2 true JPH0754756B2 (en) | 1995-06-07 |
Family
ID=11758494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62010733A Expired - Lifetime JPH0754756B2 (en) | 1987-01-20 | 1987-01-20 | X-ray observation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0754756B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69318631T2 (en) * | 1992-07-17 | 1999-01-28 | Philips Electronics Nv | X-ray examination facility |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62122488A (en) * | 1985-11-22 | 1987-06-03 | Toshiba Corp | X-ray machine |
-
1987
- 1987-01-20 JP JP62010733A patent/JPH0754756B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62122488A (en) * | 1985-11-22 | 1987-06-03 | Toshiba Corp | X-ray machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63178499A (en) | 1988-07-22 |
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