JPH04283740A - X-ray image conversion device - Google Patents

X-ray image conversion device

Info

Publication number
JPH04283740A
JPH04283740A JP3047117A JP4711791A JPH04283740A JP H04283740 A JPH04283740 A JP H04283740A JP 3047117 A JP3047117 A JP 3047117A JP 4711791 A JP4711791 A JP 4711791A JP H04283740 A JPH04283740 A JP H04283740A
Authority
JP
Japan
Prior art keywords
laser light
ray image
image conversion
light sources
conversion sheet
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.)
Withdrawn
Application number
JP3047117A
Other languages
Japanese (ja)
Inventor
Masami Hasegawa
正巳 長谷川
Hiroshi Kano
博司 鹿野
Nobuhiro Iwase
信博 岩瀬
Shinji Tadaki
進二 只木
Soichiro Hidaka
総一郎 日高
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3047117A priority Critical patent/JPH04283740A/en
Publication of JPH04283740A publication Critical patent/JPH04283740A/en
Withdrawn legal-status Critical Current

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  • Mechanical Optical Scanning Systems (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To shorten the time of a read of information recorded on an X-ray image conversion sheet without increasing the size of the device by enabling plural laser light sources to share one scanning mirror. CONSTITUTION:The laser light sources 1 and 11 share the scanning mirror 3 used to read the information by scanning the X-ray image conversion sheet 4, where the information is recorded, with laser light. Namely, the installation positions of the laser light sources 1 and 11 are so adjusted that the laser light beams 2 and 12 from the laser light sources 1 and 11 irradiate a read start position set previously on the X-ray image conversion sheet 4, and the sheet is scanned with the laser light. The read time is, for example, about 40 seconds when one read optical system is used, but shortened to about 20 seconds in this case. The same effect is obtained when a galvano-mirror is used as the scanning mirror as well as a polygon mirror.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明はX線画像変換シートの改
良に関する。最近開発されたX線画像処理システムはX
線画像変換装置と電算機とを用いて画像処理を行うもの
で、具体的にはX線を光源とし、X線画像変換シートを
用いて人体や材料を撮影し、このシートに写し込まれた
X線画像にレーザ光を走査して得られる輝尽発光を光電
子増倍管を用いて電気信号に変換した後、この信号を電
算機で画像処理を行ってブラウン管に表示したり、或い
は信号をレーザ光の強弱に変換して通常の写真フィルム
に写し換えることによりX線写真を得るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in X-ray image conversion sheets. The recently developed X-ray image processing system is
Image processing is performed using a ray image conversion device and a computer. Specifically, X-rays are used as a light source, and an X-ray image conversion sheet is used to photograph a human body or material, and the image is imprinted on this sheet. After converting the stimulated luminescence obtained by scanning an X-ray image with a laser beam into an electrical signal using a photomultiplier tube, this signal is processed by a computer and displayed on a cathode ray tube, or the signal is An X-ray photograph is obtained by converting the intensity of laser light and transferring it to ordinary photographic film.

【0002】かゝる方法をとると、従来のX線写真に較
べて数10分の1以下の線量で鮮明な画像を得ることが
てきる。こゝで、X線画像変換シートは放射線エネルギ
ーを一旦蓄積でき、後で熱や光による励起によって蛍光
を発する輝尽性蛍光体を感光材料とするシートである。
[0002] If such a method is adopted, clear images can be obtained with a dose less than several tenths of that of conventional X-ray photography. Here, the X-ray image conversion sheet is a sheet whose photosensitive material is a stimulable phosphor that can temporarily store radiation energy and later emits fluorescence when excited by heat or light.

【0003】かゝるX線画像変換シートは不要な露光を
防ぐために常時カセッテと云われる容器に収納した状態
で使用されている。そして、X線による露光が終わった
後は、カセッテより取り出し、レーザ光の走査による電
気信号への変換や、画像処理など一連の処理を行った後
、可視光の照射を行って残っている情報を完全に消去し
た後、再びカセッテに収納して使用されている。
[0003] Such an X-ray image conversion sheet is always used while being stored in a container called a cassette to prevent unnecessary exposure. After the X-ray exposure is complete, the material is removed from the cassette and subjected to a series of processes such as conversion to electrical signals by scanning with laser light and image processing, and then irradiation with visible light to retain the remaining information. After completely erasing the data, it is stored in the cassette and used again.

【0004】0004

【従来の技術】先に記したようにX線照射により情報を
記録したX線画像変換シートはカセッテより取り出し、
レーザ光の走査により電気信号への変換が行われている
[Prior Art] As mentioned above, an X-ray image conversion sheet on which information has been recorded by X-ray irradiation is removed from a cassette.
Conversion into electrical signals is performed by scanning laser light.

【0005】図2は記録読み取り用光学系の斜視図(A
)と断面図(B)である。すなわち、レーザ光源1より
発振したレーザ光2をポリゴンミラーやガルバノミラー
などの走査用ミラー3を用い、このミラーの回転により
X線画像変換シート4を片側より順次に走査し、X線の
照射により発光する輝尽発光を集光用ファイバ5により
集光し、これを光電子増倍管6を用いて電気信号に変換
している。
FIG. 2 is a perspective view (A
) and a cross-sectional view (B). That is, using a scanning mirror 3 such as a polygon mirror or a galvano mirror, a laser beam 2 oscillated from a laser light source 1 is sequentially scanned from one side of the X-ray image conversion sheet 4 by rotating this mirror, and by irradiation with X-rays. The emitted stimulated luminescence is collected by a focusing fiber 5, and converted into an electrical signal using a photomultiplier tube 6.

【0006】こゝで、装置の小形化のためにレーザ光源
1としては半導体レーザを使用して走査が行われている
。また、X線画像変換装置の使用に当たっては記録情報
の読み取り時間をできるだけ短縮することが必要であり
、この方法としては読み取り用光学系の複数化による対
処が検討されている。
Here, in order to downsize the device, a semiconductor laser is used as the laser light source 1 for scanning. Furthermore, when using an X-ray image conversion device, it is necessary to shorten the reading time of recorded information as much as possible, and as a method for this purpose, the use of a plurality of reading optical systems is being considered.

【0007】図3はこの状態を示す一例で、従来の光学
系に平行してレーザ光源11, 走査用ミラー13, 
集光用ファイバ15, 光電子増倍管16よりなる光学
系を設けた場合を示している。
FIG. 3 shows an example of this state, in which a laser light source 11, a scanning mirror 13,
A case is shown in which an optical system consisting of a light collecting fiber 15 and a photomultiplier tube 16 is provided.

【0008】このようにすると、読み取り用光学系の設
置数に反比例して読み取り時間を短縮することができる
。然し、これによると装置の大型化と価格の上昇は避け
られず、この対策が必要であった。
[0008] In this way, the reading time can be shortened in inverse proportion to the number of reading optical systems installed. However, according to this, it was inevitable that the equipment would become larger and the price would rise, so this measure was necessary.

【0009】[0009]

【発明が解決しようとする課題】X線画像変換装置の高
速化に当たっては、装置を大型化せずにX線画像変換シ
ートに記録してある情報の読み取り時間を短縮すること
が必要で、この対策が課題である。
[Problems to be Solved by the Invention] In order to increase the speed of an X-ray image conversion device, it is necessary to shorten the time it takes to read information recorded on an X-ray image conversion sheet without increasing the size of the device. The challenge is to take countermeasures.

【0010】0010

【課題を解決するための手段】上記の課題は情報を記録
したX線画像変換シートにレーザ光を走査して情報を読
み出すのに使用する走査用ミラーを複数のレーザ光源で
共同使用することを特徴としてX線画像変換装置を構成
することにより解決することができる。
[Means for solving the problem] The above problem requires that multiple laser light sources jointly use a scanning mirror used to read out information by scanning a laser beam onto an X-ray image conversion sheet on which information is recorded. This problem can be solved by configuring an X-ray image conversion device as a characteristic.

【0011】[0011]

【作用】本発明は装置を大型化することなくX線画像変
換シートに記録されている情報の読み取りを行う方法と
して一個の走査用ミラーを複数のレーザ光源で共用する
ことにより実現するものである。
[Operation] The present invention is a method for reading information recorded on an X-ray image conversion sheet without increasing the size of the device by sharing one scanning mirror with multiple laser light sources. .

【0012】この場合の問題は、走査用ミラーに対する
レーザの配置と集光用ファイバの配置となる。図1はレ
ーザ光源2個を共用した場合の光学系の配置を示す斜視
図(A)と断面図(B)である。
The problem in this case is the arrangement of the laser with respect to the scanning mirror and the arrangement of the condensing fiber. FIG. 1 is a perspective view (A) and a cross-sectional view (B) showing the arrangement of an optical system when two laser light sources are shared.

【0013】すなわち、レーザ光源1,11からのレー
ザ光2,12が走査用ミラー3で反射し、X線画像変換
シート4に予め設定した読み出し開始位置を照射するよ
うにレーザ光源1,11の設置位置を調整し、以後は従
来と同様にレーザ光を走査する。
That is, the laser light sources 1 and 11 are adjusted so that the laser lights 2 and 12 from the laser light sources 1 and 11 are reflected by the scanning mirror 3 and irradiate the X-ray image conversion sheet 4 at a preset reading start position. After adjusting the installation position, scan the laser beam as before.

【0014】このような方法をとることにより、装置は
従来と殆ど同じ大きさであるに拘らず情報の読み出し時
間を短縮することができる。
[0014] By adopting such a method, the time required to read information can be shortened even though the device has almost the same size as the conventional device.

【0015】[0015]

【実施例】X線画像変換シート4としては横405mm
,縦365mm のものを用い、走査用ミラーとしては
ポリゴンミラーを用いた。
[Example] The width of the X-ray image conversion sheet 4 is 405 mm.
, 365 mm in length, and a polygon mirror was used as the scanning mirror.

【0016】以下、図1の二個のレーザ光源を用いた場
合について実施例を説明する。走査用ミラー3はX線画
像変換シート4の中央で高さが600mm の位置に設
置し、またレーザ光源1,11は走査用ミラー3より2
00mm の位置に配置し、走査用ミラー3から反射し
たレーザ光2,12のX線画像変換シート4への垂線に
対する角θがそれぞれ9.46°となるように配置した
[0016] Hereinafter, an example will be described in which the two laser light sources shown in FIG. 1 are used. The scanning mirror 3 is installed at a height of 600 mm in the center of the X-ray image conversion sheet 4, and the laser light sources 1 and 11 are placed 2
00 mm 2 , and the angles θ of the laser beams 2 and 12 reflected from the scanning mirror 3 with respect to the perpendicular to the X-ray image conversion sheet 4 were each 9.46°.

【0017】このようにすると、X線画像変換シート4
に照射するレーザ光2,12の間隔は200mm とな
る。そして、この照射位置に適合するよう図に示すよう
に集光用ファイバ5,15と光電子増倍管6,16とを
配置し、あとは従来と同様な方法でレーザ光源1,11
より波長が780nm の光を走査し、X線画像変換シ
ート4より輝尽発光する波長が約400 nmの光を集
光用ファイバ5,15で集光し、光電子増倍管6,16
で電気信号に変え、電算機処理を行った。
In this way, the X-ray image conversion sheet 4
The interval between the laser beams 2 and 12 irradiated on the surface is 200 mm. Then, as shown in the figure, the focusing fibers 5, 15 and the photomultiplier tubes 6, 16 are arranged to match this irradiation position, and the rest is done in the same manner as in the conventional method.
The light with a wavelength of about 780 nm is scanned, and the light with a wavelength of about 400 nm emitted from the X-ray image conversion sheet 4 is collected by the focusing fibers 5 and 15, and the photomultiplier tubes 6 and 16
This was converted into an electrical signal and processed by computer.

【0018】その結果、読み取り光学系が一個の場合の
読み取り時間が約40秒なのに対し、約20秒に短縮す
ることができた。なお、走査ミラーとしてガルバノミラ
ーを使用した場合も全く同じ結果を得ることができた。
As a result, the reading time could be shortened to about 20 seconds, compared to about 40 seconds when there is only one reading optical system. Note that exactly the same results could be obtained when a galvanometer mirror was used as the scanning mirror.

【0019】[0019]

【発明の効果】本発明の実施により単一の光学系を用い
る従来のX線画像変換装置と殆ど変わらずに記録情報の
読み出し速度を向上することができる。
According to the present invention, the readout speed of recorded information can be improved almost unchanged from conventional X-ray image conversion apparatuses using a single optical system.

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

【図1】本発明を実施した光学系の斜視図(A)と断面
図(B)である。
FIG. 1 is a perspective view (A) and a cross-sectional view (B) of an optical system embodying the present invention.

【図2】X線画像変換シートの記録読み取り用光学系の
斜視図(A)と断面図(B)である。
FIG. 2 is a perspective view (A) and a cross-sectional view (B) of an optical system for recording and reading an X-ray image conversion sheet.

【図3】読み取り時間を短縮した光学系の斜視図(A)
と断面図(B)である。
[Figure 3] Perspective view of optical system that shortens reading time (A)
and a cross-sectional view (B).

【符号の説明】[Explanation of symbols]

1,11    レーザ光源 2,12    レーザ光線 3,13    走査用ミラー 4        X線画像変換シート5,15   
 集光用ファイバ 6,16    光電子増倍管
1, 11 Laser light source 2, 12 Laser beam 3, 13 Scanning mirror 4 X-ray image conversion sheet 5, 15
Focusing fiber 6, 16 Photomultiplier tube

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  情報を記録したX線画像変換シート(
4)にレーザ光を走査して情報を読み出すのに使用する
走査用ミラー(3)を複数のレーザ光源(1),(11
)で共同使用することを特徴とするX線画像変換装置。
[Claim 1] An X-ray image conversion sheet (
4) A scanning mirror (3) used to read out information by scanning a laser beam on a plurality of laser light sources (1), (11)
).
JP3047117A 1991-03-13 1991-03-13 X-ray image conversion device Withdrawn JPH04283740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3047117A JPH04283740A (en) 1991-03-13 1991-03-13 X-ray image conversion device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3047117A JPH04283740A (en) 1991-03-13 1991-03-13 X-ray image conversion device

Publications (1)

Publication Number Publication Date
JPH04283740A true JPH04283740A (en) 1992-10-08

Family

ID=12766226

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3047117A Withdrawn JPH04283740A (en) 1991-03-13 1991-03-13 X-ray image conversion device

Country Status (1)

Country Link
JP (1) JPH04283740A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0854695A (en) * 1994-08-09 1996-02-27 Kobe Steel Ltd Radiation image recording and reading inspection apparatus
US5836504A (en) * 1994-08-08 1998-11-17 Kabushiki Kaisha Kobe Seiko Sho Method and apparatus for soldering inspection of a surface mounted circuit board

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5836504A (en) * 1994-08-08 1998-11-17 Kabushiki Kaisha Kobe Seiko Sho Method and apparatus for soldering inspection of a surface mounted circuit board
JPH0854695A (en) * 1994-08-09 1996-02-27 Kobe Steel Ltd Radiation image recording and reading inspection apparatus

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Effective date: 19980514