JPH02278038A - Supporting structure of photo beam scanning mechanism - Google Patents
Supporting structure of photo beam scanning mechanismInfo
- Publication number
- JPH02278038A JPH02278038A JP1101064A JP10106489A JPH02278038A JP H02278038 A JPH02278038 A JP H02278038A JP 1101064 A JP1101064 A JP 1101064A JP 10106489 A JP10106489 A JP 10106489A JP H02278038 A JPH02278038 A JP H02278038A
- Authority
- JP
- Japan
- Prior art keywords
- scanning mechanism
- vibration
- surface image
- beam scanning
- spring constant
- 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
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- 230000005540 biological transmission Effects 0.000 abstract description 10
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- 238000000034 method Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 37
- 230000005855 radiation Effects 0.000 description 18
- 230000003287 optical effect Effects 0.000 description 13
- 230000035939 shock Effects 0.000 description 7
- 230000032258 transport Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004020 luminiscence type Methods 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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- 201000011510 cancer Diseases 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
Landscapes
- Vibration Prevention Devices (AREA)
- Image Input (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は光ビーム走査機構の支持構造に関し、−層詳細
には、例えば、放射線面像記録再生システムを構成する
光ビーム走査機構を振動吸収体を介して車両等に設置す
ることにより、前記システムの輸送時および記録再生動
作時において、外部からの衝撃および振動が前記光ビー
ム走査機構に伝達されるのを防止すると共に、輸送時の
前後における光ビーム走査機構の固定支持あるいは固定
支持解除等の作業を省略することを可能とした光ビーム
走査機構における支持構造に関する。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a support structure for a light beam scanning mechanism, and more specifically, for example, a support structure for a light beam scanning mechanism constituting a radiation surface image recording and reproducing system. By installing the system in a vehicle or the like through the body, it is possible to prevent shocks and vibrations from the outside from being transmitted to the light beam scanning mechanism during transportation and recording/playback operations of the system, and also to prevent The present invention relates to a support structure for a light beam scanning mechanism that makes it possible to omit operations such as fixed support or release of fixed support for the light beam scanning mechanism.
〔発明の背景］
最近、蓄積性蛍光体を用いて被写体の放射線透過像を得
る放射線面像記録再生システムが本出願人によって開発
され、これに関連して多数の特許出願（例えば、特開昭
５５−１２４２９号、同５５−１０３４７２号、同５５
−１１６３４０号、同５５−８７９７０号等）がなされ
ている。これらの技術を用いた放射線面像再生システム
は、特に、医療分野に広汎に普及しつつある。[Background of the Invention] Recently, the applicant has developed a radiation surface image recording and reproducing system that obtains a radiographic image of a subject using a stimulable phosphor, and a number of patent applications have been filed in connection with this system (for example, No. 55-12429, No. 55-103472, No. 55
-116340, No. 55-87970, etc.). Radiation surface image reproduction systems using these techniques are becoming widespread, particularly in the medical field.
ここで、蓄積性蛍光体とは、放射線（Ｘ線、α線、β線
、Ｔ線、電子線、紫外線等）を照射すると、この放射エ
ネルギの一部を蓄積し、後に可視光等の励起光を照射す
ることにより蓄積されたエネルギに対応した強度で輝尽
発光する蛍光体をいう。Here, a stimulable phosphor is a phosphor that, when irradiated with radiation (X-rays, α-rays, β-rays, T-rays, electron beams, ultraviolet rays, etc.), stores a part of this radiant energy and later excites it with visible light, etc. A phosphor that emits stimulated light with an intensity corresponding to the energy accumulated when irradiated with light.
すなわち、放射線面像記録再生システムは前記蓄積性蛍
光体を利用したもので、人体等の放射線面像等を、−旦
、この蓄積性蛍光体からなる層を有するシートに記録し
、このシートをレーザ光等の励起光で走査して輝尽発光
光を生じさせ、得られた輝尽発光光を光電的に読み取っ
て面像信号を得、この面像信号に所定の面像処理を施し
た後、写真感光材料等の記録材料、表示手段であるＣＲ
Ｔ等に可視像として出力させるものである。That is, the radiation surface image recording and reproducing system utilizes the stimulable phosphor, in which a radiation surface image of a human body, etc. is first recorded on a sheet having a layer made of the stimulable phosphor, and then this sheet is Scanning with excitation light such as a laser beam generates stimulated luminescence light, photoelectrically reads the resulting stimulated luminescence light to obtain a surface image signal, and predetermined surface image processing is performed on this surface image signal. After that, recording materials such as photographic light-sensitive materials, CR which is a display means
This is to output it as a visible image to T or the like.
ところで、このようなシステムは移動可能な検診車に搭
載し、集団検診に適用されることが本来有するシステム
の機能が最大限に発揮出来、病気、例えば、ガン等の早
期発見および早期治療につながるのは論を待たないとこ
ろである。By the way, such a system can be installed on a mobile medical examination vehicle and applied to mass examinations, so that the original function of the system can be maximized, leading to early detection and early treatment of diseases such as cancer. This is beyond debate.
この場合、前記システムを構成する面像読取部は光ビー
ム走査機構を有するため、特に、面像を光学的に正確に
読み取るため外部からの振動を吸収すべく防振手段を講
じる必要がある。このような防振手段として、例えば、
前記光ビーム走査機構をばね等の弾性部材を介して支持
するように構成したものがある。In this case, since the surface image reading section constituting the system has a light beam scanning mechanism, it is particularly necessary to take anti-vibration means to absorb external vibrations in order to optically and accurately read the surface image. Examples of such vibration-proofing means include:
There is a structure in which the light beam scanning mechanism is supported via an elastic member such as a spring.
然しなから、従来の防振手段は装置の動作時のみを対象
として設計されており、システムの輸送中に発生する振
動が面像読取部に伝播するのを十分に抑制することが出
来ず、その結果、面像読取部の損傷および読取動作への
障害が惹起する懸念が存在する。それを回避するために
、例えば、システムの輸送時の前後において光ビーム走
査機構を固定したり、固定解除したりする機構が必要と
なる。この場合、固定しあるいはそれを解除するための
作業が煩わしいだけでなく、構成も複雑化する欠点があ
る。However, conventional anti-vibration means are designed only for when the device is in operation, and cannot sufficiently suppress vibrations generated during transportation of the system from propagating to the surface image reading section. As a result, there is a concern that the surface image reading section may be damaged and the reading operation may be hindered. In order to avoid this, for example, a mechanism is required to fix and release the light beam scanning mechanism before and after transporting the system. In this case, there is a drawback that not only is the work for fixing or releasing it cumbersome, but the structure is also complicated.
［発明の目的］
本発明は前記の不都合を克服するためになされたもので
あって、光ビーム走査機構をばね定数の異なる複数の弾
性部材を直列に接続した振動吸収体で支持し、夫々の弾
性部材を面像走査時の防振並びに輸送時に発生する衝撃
吸収のために用いることにより、面像走査時は勿論のこ
と、輸送時に発生する衝撃を好適に抑制することを可能
とした光ビーム走査機構の支持構造を提供することを目
的とする。[Object of the Invention] The present invention has been made in order to overcome the above-mentioned disadvantages, and the light beam scanning mechanism is supported by a vibration absorber in which a plurality of elastic members having different spring constants are connected in series. A light beam that makes it possible to suitably suppress shocks generated not only during surface image scanning but also during transportation by using an elastic member for vibration isolation during surface image scanning and for absorbing shocks generated during transportation. The purpose is to provide a support structure for a scanning mechanism.
［目的を達成するための手段］
前期の目的を達成するために、本発明は光源からの光ビ
ームをシート体に対して走査することで面像情報の記録
あるいは読取を行う光ビーム走査機構において、ばね定
数の大なる弾性部材とばね定数の小なる弾性部材とを直
列に接続してなる振動吸収体を介して前記光ビーム走査
機構を基台上に支持することを特徴とする。[Means for achieving the object] In order to achieve the above object, the present invention provides a light beam scanning mechanism that records or reads surface image information by scanning a sheet body with a light beam from a light source. The light beam scanning mechanism is supported on a base via a vibration absorber formed by connecting an elastic member with a large spring constant and an elastic member with a small spring constant in series.
［実施態様］
次に、本発明に係る光ビーム走査機構の支持構造につい
て好適な実施態様を挙げ、添付の図面を参照しながら以
下詳細に説明する。[Embodiments] Next, preferred embodiments of the support structure for the light beam scanning mechanism according to the present invention will be described in detail with reference to the accompanying drawings.
第１図において、参照符号１０は本実施態様に係る光ビ
ーム走査機構の支持構造が適用される面像読取装置を備
えた検診システムを示す。当該検診システム１０は自動
車１１に搭載される放射線面像情報記録システム１２と
、検診センタ等に設置される放射線面像情報再生システ
ム１４を含む。In FIG. 1, reference numeral 10 indicates a medical examination system equipped with a surface image reading device to which a support structure for a light beam scanning mechanism according to this embodiment is applied. The medical examination system 10 includes a radiographic image information recording system 12 mounted on a car 11 and a radiographic image information reproducing system 14 installed at a medical examination center or the like.
すなわち、当該検診システムＩＯは自動車に搭載される
放射線面像情報記録システム１２によって得られた面像
情報を検診センタにおける放射線面像情報再生システム
１４を用いて可視像として再生し、この可視像に基づい
て診断を行うものである。以下、当該検診システム１０
の構成を説明する。That is, the medical examination system IO reproduces the surface image information obtained by the radiographic surface image information recording system 12 installed in the automobile as a visible image using the radiographic surface image information reproduction system 14 in the medical examination center, and Diagnosis is performed based on images. Below, the medical examination system 10
The configuration of is explained.
前記放射線面像情報記録システム１２は放射線面像撮影
部１６と、放射線面像読取部１８とから構成される。前
記放射線面像撮影部１６はＸ線源１６ａから被写体Ｐに
照射されるＸ線の透過像を撮影台１６ｂの蓄積性蛍光体
に記録する。前記放射線面像読取部１８はＸ線の透過像
が記録された蓄積性蛍光体を所定の条件下に光電的に読
み取りデジタル信号に変換する面像読取装置２０と、デ
ジタル信号に変換された面像信号を蓄積する面像蓄積装
置２２（例えば、光デイスクファイル装置）とから構成
される装
前記放射線面像情報再生システム１４は、前記面像蓄積
装置２２の面像信号が蓄積された光ディスクからこの面
像信号を読み出す光デイスクファイル装置２４と、この
面像信号を可視像として出力する面像出力装置２６（例
えば、レーザプリンタ）と、この面像信号を可視像とし
てＣＲＴ上に表示するＣＲＴ表示装置２８とから構成さ
れる。なお、面像出力装置２６とＣＲＴ表示装置２８は
いずれか一方のみとしてもよい。The radiation surface image information recording system 12 is composed of a radiation surface image capturing section 16 and a radiation surface image reading section 18. The radiation surface image capturing section 16 records a transmitted image of the X-rays irradiated onto the subject P from the X-ray source 16a on the stimulable phosphor of the imaging table 16b. The radiation surface image reading unit 18 includes a surface image reading device 20 that photoelectrically reads a stimulable phosphor on which an X-ray transmission image is recorded and converts it into a digital signal under predetermined conditions, and a surface image reading device 20 that photoelectrically reads a stimulable phosphor on which an X-ray transmission image is recorded and converts it into a digital signal. The radiation surface image information reproducing system 14, which includes a surface image storage device 22 (for example, an optical disk file device) that stores image signals, reproduces the surface image information from the optical disk on which the surface image signals of the surface image storage device 22 are stored. An optical disk file device 24 that reads this surface image signal, a surface image output device 26 (for example, a laser printer) that outputs this surface image signal as a visible image, and a surface image output device 26 that outputs this surface image signal as a visible image, and displays this surface image signal as a visible image on a CRT. It is composed of a CRT display device 28 and a CRT display device 28. Incidentally, only one of the surface image output device 26 and the CRT display device 28 may be used.
次に、第２図に、自動車１１に搭載される放射線面像情
報記録システム１２の中、放射線面像読取部１８の全体
図を示す。なふ、当該放射線面像読取部１８は、面像読
取装置２０および面像蓄積装置２２の動作制御や面像蓄
積装置２２に蓄積される面像信号を可視像として表示す
るコンソール３０を含む。Next, FIG. 2 shows an overall view of the radiation surface image reading section 18 in the radiation surface image information recording system 12 mounted on the automobile 11. The radiation surface image reading unit 18 includes a console 30 that controls the operation of the surface image reading device 20 and the surface image storage device 22 and displays the surface image signals stored in the surface image storage device 22 as visible images. .
第３図は面像読取装置２０の概略断面構成を示す。この
場合、本実施態様に係る光ビーム走査機構は筐体３２内
に収納されている。前記筐体３２内にはＸ線の透過像が
記録された蓄積性蛍光体シートＳを装填する装填部３４
と、当該装填部３４から前記蓄積性蛍光体を一枚ずつ取
り出す枚葉部３６と、この蓄積性蛍光体を第１の搬送路
３８によ、て搬送し、当該第１搬送路３８から蓄積性蛍
光体シー）Ｓを取り込み蓄積性蛍光体シートＳに記録さ
れたＸ線の透過像を光電的に読み取りデジタル信号に変
換する光ビーム走査機構部４０と、この蓄積性蛍光体シ
ートＳを第２の搬送路４２によって搬送し、当該第２搬
送路４２から蓄積性蛍光体シートＳを取り込み蓄積性蛍
光体シートＳに記録されたＸ線の透過像の残像を消去す
る消去部４４と、この蓄積性蛍光体シートＳを第３の搬
送路４６によって搬送し再び撮影に供するため一時的に
ストックするトレー４８とから実質的に構成される。FIG. 3 shows a schematic cross-sectional configuration of the surface image reading device 20. As shown in FIG. In this case, the light beam scanning mechanism according to this embodiment is housed within the housing 32. Inside the housing 32 is a loading section 34 for loading a stimulable phosphor sheet S on which an X-ray transmission image is recorded.
, a sheet unit 36 that takes out the stimulable phosphor one by one from the loading unit 34 , and a sheet unit 36 that transports the stimulable phosphor through a first transport path 38 and stores the stimulable phosphor from the first transport path 38 . A light beam scanning mechanism section 40 that takes in the stimulable phosphor sheet S and photoelectrically reads the transmitted image of X-rays recorded on the stimulable phosphor sheet S and converts it into a digital signal; an erasing unit 44 that takes in the stimulable phosphor sheet S from the second transport path 42 and erases the afterimage of the X-ray transmission image recorded on the stimulable phosphor sheet S; It is substantially composed of a tray 48 in which the stimulable phosphor sheet S is transported by a third transport path 46 and temporarily stocked for use in photographing again.
このように構成される面像読取装置２０は放射線面像撮
影部１６によって蓄積性蛍光体シー）Ｓに記録されたＸ
線の透過像を前記光ビーム走査機構部４０によって光電
的に読み取りデジタル信号に変換し、このデジタル信号
を面像蓄積装置２２に送給すると共に、前記Ｘ線の透過
像を光学的に消去してこの蓄積性蛍光体シートＳを再び
撮影に供するという機能を達成する。The surface image reading device 20 configured in this manner detects the
The transmitted image of the X-ray is photoelectrically read by the light beam scanning mechanism section 40 and converted into a digital signal, and this digital signal is sent to the surface image storage device 22, and the transmitted image of the X-ray is optically erased. The function of levering the stimulable phosphor sheet S to be photographed again is achieved.
次に、前記光ビーム走査機構部４０について詳述する。Next, the light beam scanning mechanism section 40 will be explained in detail.
前記光ビーム走査機構部４０は筐体３２内の底部５０に
設けられた振動吸収体５２ａ乃至５２ｄを介して支持台
５４上に設置される。この場合、前記支持台５４は略方
形状を呈しており、少なくとも前記支持台５４の四つの
隅角部に振動吸収体５２ａ乃至５２ｄを配設することに
より均衡のとれた支持構造となる。光ビーム走査機構部
４０には前記第１搬送路３８から蓄積性蛍光体シー）Ｓ
を取り込み、この蓄積性蛍光体シー！−３を読み取り位
冒に搬送するガイド板５６および副走査搬送ベルト５８
が設けられている。この副走査搬送ベルト５８は読み取
られた蓄積性蛍光体シー）Ｓを前記第２搬送路４２に搬
送する。The light beam scanning mechanism section 40 is installed on a support base 54 via vibration absorbers 52a to 52d provided at the bottom 50 inside the housing 32. In this case, the support stand 54 has a substantially rectangular shape, and by arranging vibration absorbers 52a to 52d at at least four corners of the support stand 54, a balanced support structure is achieved. The light beam scanning mechanism section 40 receives the stimulable phosphor sheet from the first transport path 38.
Take in this accumulative phosphor! A guide plate 56 and a sub-scanning conveyor belt 58 that read and convey the
is provided. This sub-scanning conveyance belt 58 conveys the read stimulable phosphor sheet S to the second conveyance path 42 .
前記副走査搬送ベルト５８の上方には蓄積性蛍光体シー
）Ｓに記録されたＸ線の透過像を読み取る光学走査機構
６０が配設される。当該光学走査機構６０はレーザ光源
６２を含み、このレーザ光源６２のレーザ光導出側には
レーデ光６４を反射するミラー６６が設けられており、
このミラー６６によって反射されたレーザ光６４はガル
バノメータミラー６８に至る。このガルバノメータミラ
ー６８は高速揺動動作によって前記レーザ光６４を一次
元的に偏向する機能を達成する。このように、ガルバノ
メータミラー６８によって一次元的に偏向されたレーザ
光６４の光路中には走査レンズ６９が配され、さらに、
前記走査レンズ６９を通過したレーザ光６４を蓄積性蛍
光体シートＳに指向させるための反射ミラー７０が設け
られる。An optical scanning mechanism 60 for reading an X-ray transmitted image recorded on the stimulable phosphor sheet S is disposed above the sub-scanning conveyor belt 58. The optical scanning mechanism 60 includes a laser light source 62, and a mirror 66 that reflects the radar light 64 is provided on the laser light output side of the laser light source 62.
The laser beam 64 reflected by this mirror 66 reaches a galvanometer mirror 68. This galvanometer mirror 68 achieves the function of one-dimensionally deflecting the laser beam 64 by a high-speed swinging operation. In this way, the scanning lens 69 is arranged in the optical path of the laser beam 64 that is one-dimensionally deflected by the galvanometer mirror 68, and further,
A reflecting mirror 70 is provided to direct the laser beam 64 that has passed through the scanning lens 69 toward the stimulable phosphor sheet S.
レーザ光６４の蓄積性蛍光体シートＳ上の走査位置には
主走査線に沿って光ガイド７４が配設され、前記光ガイ
ド７４の上部にフォトマルチプライヤ７６が装着される
。なお、光ガイド７４の入射端に走査線を挟んで対向す
るように集光用反射ミラー７２が設けられている。前記
フォトマルチプライヤ７６には信号処理回路７８が接続
される。A light guide 74 is disposed along the main scanning line at the scanning position of the laser beam 64 on the stimulable phosphor sheet S, and a photomultiplier 76 is mounted above the light guide 74. Note that a condensing reflecting mirror 72 is provided at the incident end of the light guide 74 so as to face it with the scanning line in between. A signal processing circuit 78 is connected to the photomultiplier 76 .
前記フォトマルチプライヤ７６によって得られた電気信
号は前記信号処理回路７８に送られ、信号処理が行われ
た後、デジタル信号として前記面像蓄積装置２２に送給
される。The electrical signal obtained by the photomultiplier 76 is sent to the signal processing circuit 78, and after signal processing is performed, it is sent to the surface image storage device 22 as a digital signal.
次に、第４図ａおよびｂに光ビーム走査機構部４０が設
置される支持台５４と、筐体３２内の底部５０との間に
介在する振動吸収体５２ａ乃至５２ｄの構成を示す。こ
の場合、第４図すは第４図ａの図中、円で囲繞したＡ部
の拡大図である。なお、支持台５４に配設される他の振
動吸収体５２ｂ乃至５２ｄの構成も当該振動吸収体５２
ａと同じ構成であり、同一の参照数字にｂ乃至ｄを付し
てその詳細な説明は省略する。Next, FIGS. 4a and 4b show the structure of vibration absorbers 52a to 52d interposed between the support base 54 on which the light beam scanning mechanism section 40 is installed and the bottom 50 inside the housing 32. In this case, FIG. 4 is an enlarged view of part A surrounded by a circle in the diagram of FIG. 4a. Note that the configurations of the other vibration absorbers 52b to 52d disposed on the support stand 54 are also the same as those of the vibration absorber 52.
It has the same configuration as a, the same reference numerals b to d are attached, and detailed explanation thereof will be omitted.
図から容易に諒解されるように、振動吸収体５２ａはば
ね定数に、のゴムプツシ：Ｌ８０ａと、軸線を同一にし
て且つ下方に配置された、すなわち、実質的に直列に配
設されたばね定数に２のコイルばね８２ａとを含む。な
お、前記ばね定数に１およびに２はに、＞ｋ２なる関係
を有する。As can be easily understood from the figure, the vibration absorber 52a has a spring constant, and the rubber pusher L80a has the same axis as the spring constant and is disposed below, that is, is substantially in series with the spring constant. 2 coil springs 82a. Note that the spring constants 1 and 2 have a relationship of >k2.
コイルばね８２ａはその下端部が筐体３２の底部５０に
円盤状のばね固定部材８４ａを介して取着され、また、
上端部には、同様に円盤状のばね固定部材８６ａが取着
される。The lower end of the coil spring 82a is attached to the bottom 50 of the housing 32 via a disk-shaped spring fixing member 84a, and
A disk-shaped spring fixing member 86a is similarly attached to the upper end.
一方、ゴムブツシュ８０ａは支持台５４に穿設された孔
部８１ａにスペーサ８３ａを介して取着される。また、
このゴムブツシュ８０ａの内周部にはスペーサ８５ａを
介してポル）８７ａが挿通される。On the other hand, the rubber bush 80a is attached to a hole 81a formed in the support base 54 via a spacer 83a. Also,
A pole 87a is inserted into the inner peripheral portion of the rubber bush 80a via a spacer 85a.
ポル）８７ａは上下両端部にナラ）８８ａ、８８ａが螺
合されており、その下端部がばね固定部材８６ａを介し
てコイルばね８２ａの上端部に当接する。The spring 87a has screws 88a and 88a screwed together at both upper and lower ends thereof, and its lower end abuts against the upper end of the coil spring 82a via a spring fixing member 86a.
本実施態様に係る光ビーム走査機構の支持構造が適用さ
れる検診システム１０は基本的には以上のように構成さ
れるものであり、次にその作用並びに効果について当該
検診システム１０の動作と関連づけて説明する。The medical examination system 10 to which the support structure for the light beam scanning mechanism according to the present embodiment is applied is basically configured as described above.Next, its functions and effects will be related to the operation of the medical examination system 10. I will explain.
第１図において、放射線面像情報記録システム１２を搭
載した自動車１１が、例えば、遠隔地あるいは会社等の
集団検診を行うために現地に赴く際、自動車１１の移動
中、衝撃および振動が放射線面像情報記録システム１２
に伝達される。ここで、第３図に示すように、前記支持
台５４と筐体３２内の底部５０との間には振動吸収体５
２ａ乃至５２ｄが介在されており、前記振動吸収体５２
ａ乃至５２ｄを構成するばね定数に、の大きなゴムプツ
シ５８０ａ乃至８０ｄが過大な振幅の振動を好適に吸収
する。すなわち、当該システム１２に衝撃が加わった場
合、先ず、ばね定数に２の小さなコイ／ｌｕばね８２ａ
乃至８２ｄが圧縮し、このコイルばね８２ａ乃至８２ｄ
が最短長となった後、ばね定数に１の大きなゴムブシュ
８０ａ乃至８０ｄが圧縮し、これによって衝撃の残余の
部分が吸収される。従って、自動車１１の移動時に加わ
る衝撃は光ビーム走査機構部４０に対して伝達されるこ
とがなく、当該機構部における損傷等の問題が回避され
ることになる。In FIG. 1, when a car 11 equipped with a radiographic image information recording system 12 goes to a remote location or a company to conduct a group medical examination, shocks and vibrations are generated on the radiographic surface while the car 11 is moving. Image information recording system 12
transmitted to. Here, as shown in FIG.
2a to 52d are interposed, and the vibration absorber 52
The rubber pushers 580a to 80d, which have large spring constants configuring the springs a to 52d, suitably absorb vibrations of excessive amplitude. That is, when a shock is applied to the system 12, first the small coil/lu spring 82a with a spring constant of 2 is applied.
The coil springs 82a to 82d are compressed, and the coil springs 82a to 82d are compressed.
After becomes the shortest length, the large rubber bushings 80a to 80d with a spring constant of 1 compress, thereby absorbing the remaining part of the impact. Therefore, the impact applied when the automobile 11 moves is not transmitted to the light beam scanning mechanism section 40, and problems such as damage to the mechanism section can be avoided.
次に、前記自動車１１が現地に到着し、放射線面像情報
記録システム１２の動作が以下のように行われる。すな
わち、被写体Ｐ（以下、被検者という）に放射線面像撮
影部１６のＸ線源１６ａからＸ線が照射され、Ｘ線の透
過像が蓄積性蛍光体シー）Ｓに記録される。このように
、Ｘ線の透過像が記録された蓄積性蛍光体シー）Ｓは面
像読取装置２０の装填部３４にセットされる。枚葉部３
６は前記装填部３４から蓄積性蛍光体シートＳを一枚ず
つ取り出し第１搬送路３８を介して光ビーム走査機構Ｒ
４０に供給する。光ビーム走査機構部４０は前記第１搬
送路３８から蓄積性蛍光体シー）Ｓを取り込み、この蓄
積性蛍光体シートＳをガイド板５６および副走査搬送ベ
ルト５８によって読取位置に搬送する。その際、前記副
走査搬送ベルト５８の上方に配設される光学走査機構６
０はレーザ光源６２からレーザ光６４を出射し、レーザ
光６４はミラー６６を介してガルバノメータミラー６８
に至る。この場合、前記ガルバノメータミラー６８は高
速で揺動しているので、前記レーザ光６４は前記ガルバ
ノメータミラー６８によって一次元的に所定角度反射偏
向され、走査レンズ６９、反射ミラー７０を介して蓄積
性蛍光体シートｓ上を走査することになる。前記レーザ
光６４はガルバノメータミラー６８によって走査方向に
所定角度偏向され蓄積性蛍光体シートＳ上を走査するこ
とにより蓄積性蛍光体シー）Ｓから放出される輝尽発光
光を直接あるいは集光用反射ミラー７２を介して光ガイ
ド７４に入射させ、フォトマルチプライヤ７６によって
電気信号に変換して信号処理回路７８に送給する。前記
信号処理回路７８は前記電気信号をデジタル信号として
前記面像蓄積装置２２に送給する。この場合、前記面像
蓄積装置２２は前記信号処理回路７８からの面像情報で
あるデジタル信号を取り込み、例えば、光ディスク等に
蓄積記録する。Next, the automobile 11 arrives at the site, and the radiation surface image information recording system 12 operates as follows. That is, a subject P (hereinafter referred to as the subject) is irradiated with X-rays from the X-ray source 16a of the radiation surface image capturing section 16, and a transmitted image of the X-rays is recorded on the stimulable phosphor sheet S. In this way, the stimulable phosphor sheet S on which the X-ray transmission image has been recorded is set in the loading section 34 of the surface image reading device 20. Single leaf part 3
6 takes out the stimulable phosphor sheets S one by one from the loading section 34 and passes them through the first conveyance path 38 to the light beam scanning mechanism R.
Supply 40. The light beam scanning mechanism section 40 takes in the stimulable phosphor sheet S from the first conveyance path 38 and conveys the stimulable phosphor sheet S to a reading position by a guide plate 56 and a sub-scanning conveyance belt 58. At that time, the optical scanning mechanism 6 disposed above the sub-scanning conveyor belt 58
0 emits a laser beam 64 from a laser light source 62, and the laser beam 64 passes through a mirror 66 to a galvanometer mirror 68.
leading to. In this case, since the galvanometer mirror 68 is oscillating at high speed, the laser beam 64 is one-dimensionally reflected and deflected by the galvanometer mirror 68 at a predetermined angle, and passes through the scanning lens 69 and the reflection mirror 70 to produce stimulable fluorescence. The body sheet s will be scanned. The laser beam 64 is deflected by a predetermined angle in the scanning direction by a galvanometer mirror 68 and scans the stimulable phosphor sheet S, thereby directing or reflecting stimulated luminescence emitted from the stimulable phosphor sheet S. The light enters a light guide 74 via a mirror 72, is converted into an electrical signal by a photomultiplier 76, and is sent to a signal processing circuit 78. The signal processing circuit 78 sends the electrical signal to the surface image storage device 22 as a digital signal. In this case, the surface image storage device 22 takes in a digital signal that is surface image information from the signal processing circuit 78, and stores and records it on, for example, an optical disk.
ここで、光学走査機構６０に外部からの振動が伝達され
ると、前記振動によって前記ガルバノメータミラー６８
がぶれを起こし正確な読み取り動作の妨げとなる。これ
に対して本実施態様では光ビーム走査機構部４０をばね
定数に２の小さなコイルばね８２ａ乃至８２ｄを有する
振動吸収体５２ａ乃至５２ｄを介して支持している。こ
の場合、被検者Ｐや作業者が前記自動車１１内を歩行す
ることで生ずるような比較的振幅の小さな振動は前記振
動吸収体５２ａ乃至５２ｄを構成するばね定数に２の小
さなコイルばね８２ａ乃至８２ｄによって吸収されるた
め、前記光ビーム走査機構部４０に伝達されることがな
い。この結果、振動の影響を受けない高精度な面像記録
が可能となる。Here, when external vibration is transmitted to the optical scanning mechanism 60, the vibration causes the galvanometer mirror 68 to
This causes blurring and prevents accurate reading operations. In contrast, in this embodiment, the light beam scanning mechanism section 40 is supported via vibration absorbers 52a to 52d having two small coil springs 82a to 82d as spring constants. In this case, vibrations with a relatively small amplitude, such as those caused by the subject P or the worker walking inside the automobile 11, are caused by coil springs 82a to 82a having a spring constant of 2, which constitute the vibration absorbers 52a to 52d. Since the light is absorbed by the light beam 82d, it is not transmitted to the light beam scanning mechanism section 40. As a result, highly accurate surface image recording that is not affected by vibrations becomes possible.
次に、副走査搬送ベルト５８は読取終了後の蓄積性蛍光
体シートＳを前記第２搬送路４２に搬送する。前記第２
搬送路４２はこの蓄積性蛍光体シー）Ｓを消去部４４に
搬送し、蓄積性蛍光体シートＳに記録されたＸ線の透過
像を光学的に消去する。そして、記録されたＸ線の透過
像が消去された蓄積性蛍光体シートＳは第３搬送路４６
によってトレー４８に搬送され、このトレー４８に一時
的にストックされて再び撮影に供される。Next, the sub-scanning conveyance belt 58 conveys the stimulable phosphor sheet S after the reading has been completed to the second conveyance path 42 . Said second
The conveying path 42 conveys this stimulable phosphor sheet S to an erasing section 44, and optically erases the transmitted X-ray image recorded on the stimulable phosphor sheet S. The stimulable phosphor sheet S from which the recorded X-ray transmission image has been erased is transferred to the third transport path 46.
The images are conveyed to the tray 48, temporarily stocked on the tray 48, and used again for photographing.
撮影が終了すると、前記自動車１１は検診センタに戻り
、放射線面像情報記録システム１２において得られた面
像情報が検診センタ等に設置される放射線面像情報再生
システム１４の光デイスクファイル装置２４によって読
み出され、当該面像情報を面像出力装Ｗ２６（例えば、
レーザプリンタ）あるいはＣＲＴ表示装置２８に可視像
として出力する。そして、当該可視像は診断に供される
ことになる。When the imaging is completed, the vehicle 11 returns to the medical examination center, and the surface image information obtained by the radiological surface image information recording system 12 is stored in the optical disk file device 24 of the radiographic surface image information reproducing system 14 installed at the medical examination center or the like. The surface image information is read out and sent to the surface image output device W26 (for example,
The image is output as a visible image to a laser printer) or a CRT display device 28. The visible image is then used for diagnosis.
以上のように、自動車１１に搭載される放射線面像情報
記録システム１２において、蓄積性蛍光体シー）Ｓに記
録されたＸ線の透過像を光電的に読み取りデジタル信号
に変換する面像読取装置２０を構成する光ビーム走査機
構部４０を筐体３２の底部に振動吸収体５２ａ乃至５２
ｄを介して設置している。このため、自動車１１の移動
中に発生した前記面像読取装置２０に伝達される過大な
振幅の振動は前記振動吸収体５２ａ乃至５２ｄを構成す
るゴムブツシュ８０ａ乃至８０ｄによって吸収され、ま
た、Ｘ線の透過像の読取動作に伴って発生する比較的小
さな振幅の振動はコイルばね８２ａ乃至８２ｄによって
吸収される。換言すれば、Ｘ線の透過像の読取動作中に
限らず、自動車１１の移動時においても前記はね定数の
異なる複数の弾性部材の夫々の防振作用により、微小な
振幅から過大な振幅の振動に対して防振作用が達成され
る。しかも、コイルばね８２ａ乃至８２ｄに略完全に収
縮するような振動が与えられた場合にはゴムブシュ８０
ａ乃至８０ｄがさらにこの振動を吸収するよう助力する
。As described above, in the radiation surface image information recording system 12 mounted on the automobile 11, the surface image reading device photoelectrically reads the transmitted image of X-rays recorded on the stimulable phosphor sheet S and converts it into a digital signal. The optical beam scanning mechanism section 40 constituting the optical beam scanning mechanism 20 is mounted on the bottom of the housing 32 with vibration absorbers 52a to 52.
It is installed via d. Therefore, vibrations of excessive amplitude transmitted to the surface image reading device 20 that occur while the automobile 11 is moving are absorbed by the rubber bushes 80a to 80d constituting the vibration absorbers 52a to 52d. Relatively small amplitude vibrations that occur with the transmission image reading operation are absorbed by the coil springs 82a to 82d. In other words, not only during the reading operation of an X-ray transmission image, but also when the automobile 11 is moving, the vibration damping effect of each of the plurality of elastic members having different spring constants prevents vibrations from small amplitudes to excessive amplitudes. An anti-vibration effect is achieved against vibrations. Moreover, when a vibration that causes the coil springs 82a to 82d to contract almost completely is applied, the rubber bushing 80
a to 80d further help absorb this vibration.
第５図は本発明に係る光ビーム走査機構の支持構造とし
ての振動吸収体の第２の実施態様を示す。ここで、参照
符号９０ａは振動吸収体を示す。図から容易に諒解され
るように、当該振動吸収体９０ａはばね定数に３の板ば
ね９２ａと、ばね定数に、のコイルばね９４ａとを有す
る（ｋ３〉ｋ、）。なお、支持台５４に取着される他の
振動吸収体９０ｂ乃至９０ｄの構成も当該振動吸収体９
０ａと同じ構成であり、その詳細な説明は省略する。FIG. 5 shows a second embodiment of a vibration absorber as a support structure for a light beam scanning mechanism according to the present invention. Here, reference numeral 90a indicates a vibration absorber. As can be easily understood from the figure, the vibration absorber 90a has a leaf spring 92a with a spring constant of 3 and a coil spring 94a with a spring constant of 3 (k3>k,). Note that the configurations of the other vibration absorbers 90b to 90d attached to the support base 54 are also the same as those of the vibration absorber 9.
It has the same configuration as 0a, and detailed explanation thereof will be omitted.
そこで、前記板ばね９２ａとコイルばね９４ａとは支持
台５４と筺体３２との間に直列に重積され、コイルばね
９４ａはその下端部が筐体３２内の底部５０にばね固定
部材９６ａを介して取着されており、上端部にはばね固
定部材９８ａを介してボルト１０６ａの下端部が当接す
る。Therefore, the leaf spring 92a and the coil spring 94a are stacked in series between the support base 54 and the casing 32, and the lower end of the coil spring 94a is attached to the bottom 50 inside the casing 32 via a spring fixing member 96a. The lower end of the bolt 106a comes into contact with the upper end via the spring fixing member 98a.
この場合、ポル） １０６ａにはナラ） １０８ａを介
して板ばね９２ａが装着される。また、ポル） １０６
ａの上端部は支持台５４に穿設した孔部１００ａに臨入
する。一方、前記板ばね９２ａはボルト１０２ａによっ
て支持台５４に固定される。In this case, a leaf spring 92a is attached to the spring 106a via the spring 108a. Also, Pol) 106
The upper end portion of a enters a hole 100a formed in the support base 54. Meanwhile, the leaf spring 92a is fixed to the support base 54 by a bolt 102a.
コイルばね９４ａはシステム動作時における比較的小さ
な振幅の振動を吸収し、板ばね９２ａはシステム移動時
に発生する過大な振幅の衝撃を吸収する。なお、この実
施態様では振動吸収体の取付構造は第１の実施態様より
も一層簡易なものとなる。The coil spring 94a absorbs vibrations of relatively small amplitude during system operation, and the leaf spring 92a absorbs shocks of excessive amplitude that occur when the system moves. In this embodiment, the mounting structure of the vibration absorber is simpler than that of the first embodiment.
なお、本実施態様における光ビーム走査機構の支持構造
はばね定数の異なる２種の弾性部材を光ビーム走査機構
の底部と支持台間に直列に配設して光ビーム走査機構を
設置するようにしたものであるが、光ビーム走査機構の
側部と筐体間に弾性部材を設けることにより水平方向の
振動に対する耐振性を向上させることも可能である。ま
た、本実施態様においては、面像読取装置の光ビーム走
査機構を挙げて説明したが、面像記録装置における光ビ
ーム走査機構に対しても適用可能である。さらに、本実
施態様における支持構造は移動時における固定手段が不
要であるため、検診システムをさらに簡素化することが
出来、さらにまた、移動台に載置し、病院内で運搬可能
な検診システムに適用することも可能である。The support structure for the light beam scanning mechanism in this embodiment is such that two types of elastic members with different spring constants are arranged in series between the bottom of the light beam scanning mechanism and the support base to install the light beam scanning mechanism. However, it is also possible to improve the vibration resistance against horizontal vibrations by providing an elastic member between the side part of the light beam scanning mechanism and the housing. Further, in this embodiment, the light beam scanning mechanism of a surface image reading device has been described, but it is also applicable to a light beam scanning mechanism of a surface image recording device. Furthermore, since the support structure in this embodiment does not require any fixing means during movement, the medical examination system can be further simplified, and furthermore, it can be placed on a mobile platform and transported within the hospital. It is also possible to apply
［発明の効果］
以上のように、本発明によれば、システムを設置する際
、ばね定数の異なる複数の弾性部材を組み合わせて配置
している。そして、ばね定数の小さな弾性部材はシステ
ムの動作時の比較的小さな振幅の振動を吸収する作用を
なし、方、ばね定数の大きな弾性部材はシステムの移動
時に及ぼされる過大な振幅の衝撃を吸収する作用を達成
している。このため、両弾性部材によって広範囲な振幅
の振動に対する防振が可能であることからシステムの動
作時は勿論、システムの輸送時に発生する振動を吸収す
ることが出来る。しかも、システムに大きな振動が伝達
されないようにすることにより正確な情報の読取動作に
寄与出来、且つシステムの不意の損傷等を回避すること
が可能となる。また、本発明に係る弾性部材は、システ
ムの動作時のみならず、システムの輸送時に発生する振
動を吸収することが出来るため、従来のようにシステム
の輸送時毎に光ビーム走査機構の位置決めロックおよび
ロック解除等の作業を必要とせず、システムの操作性が
向上する効果が得られる。[Effects of the Invention] As described above, according to the present invention, when installing a system, a plurality of elastic members having different spring constants are combined and arranged. An elastic member with a small spring constant acts to absorb vibrations of relatively small amplitude when the system is operating, while an elastic member with a large spring constant absorbs shocks with excessive amplitude when the system moves. effect has been achieved. Therefore, both elastic members can provide vibration isolation over a wide range of amplitudes, making it possible to absorb vibrations generated not only during operation of the system but also during transportation of the system. Furthermore, by preventing large vibrations from being transmitted to the system, it is possible to contribute to accurate information reading operations and to avoid unexpected damage to the system. Furthermore, since the elastic member according to the present invention can absorb vibrations generated not only during system operation but also during system transportation, the positioning lock of the light beam scanning mechanism can be locked every time the system is transported, unlike conventional systems. Moreover, there is no need for work such as unlocking, and the operability of the system can be improved.
以上、本発明について好適な実施態様を挙げて説明した
が、本発明はこの実施態様に限定されるものではなく、
本発明の要旨を逸脱しない範囲において種々の改良並び
に設計の変更が可能なことは勿論である。Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments.
Of course, various improvements and changes in design are possible without departing from the gist of the present invention.
第１図は本発明に係る光ビーム走査機構の支持構造が適
用される検診システムの全体構成図、第２図は第１図に
示す検診システムの中、自動車に搭載される面像読取部
の概略斜視図、第３図は第２図に示す面像読取部の中、
光ビーム走査機構を内蔵する面像読取装置の慨略説明図
、
第４図ａおよびｂは本発明に係る光ビーム走査機構の支
持構造の第１実施態様を示す図、第５図は本発明に係る
光ビーム走査機構の支持構造の第２実施態様を示す図で
ある。
１０・・・検診システム
１２・・・放射線面像情報記録システム１４・・・放射
線面像情報再生システム１８・・・放射線面像読取部
２０・・・面像読取装置３２・・・筐体
４０・・・光ビーム走査機構部 ５０・・・底部５２
ａ〜５２ｄ・・・振動吸収体 ５４・・・支持台６０
・・・光学走査機構
６８・・・ガルバノメータミラー
８０ａ・・・ゴムブツシュ ８２ａ・・・コイル
ばね９０ａ・・・振動吸収体 ９２ａ・・・板
ばね９４ａ・・・コイルばねFIG. 1 is an overall configuration diagram of a medical examination system to which the support structure for a light beam scanning mechanism according to the present invention is applied, and FIG. A schematic perspective view, FIG. 3 shows the inside of the surface image reading section shown in FIG.
A schematic explanatory diagram of a surface image reading device incorporating a light beam scanning mechanism, FIGS. 4a and 4b are views showing a first embodiment of a support structure for a light beam scanning mechanism according to the present invention, and FIG. It is a figure which shows the 2nd embodiment of the support structure of the light beam scanning mechanism based on FIG. 10... Medical examination system 12... Radiographic image information recording system 14... Radiographic image information reproducing system 18... Radiographic image reading unit
20... Surface image reading device 32... Housing 40... Light beam scanning mechanism section 50... Bottom part 52
a to 52d... Vibration absorber 54... Support stand 60
... Optical scanning mechanism 68 ... Galvanometer mirror 80a ... Rubber bush 82a ... Coil spring 90a ... Vibration absorber 92a ... Leaf spring 94a ... Coil spring
Claims (1)
ことで面像情報の記録あるいは読取を行う光ビーム走査
機構において、ばね定数の大なる弾性部材とばね定数の
小なる弾性部材とを直列に接続してなる振動吸収体を介
して前記光ビーム走査機構を基台上に支持することを特
徴とする光ビーム走査機構の支持構造。(1) In a light beam scanning mechanism that records or reads surface image information by scanning a sheet with a light beam from a light source, an elastic member with a large spring constant and an elastic member with a small spring constant are used. A support structure for a light beam scanning mechanism, characterized in that the light beam scanning mechanism is supported on a base via vibration absorbers connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1101064A JPH02278038A (en) | 1989-04-20 | 1989-04-20 | Supporting structure of photo beam scanning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1101064A JPH02278038A (en) | 1989-04-20 | 1989-04-20 | Supporting structure of photo beam scanning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02278038A true JPH02278038A (en) | 1990-11-14 |
Family
ID=14290679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1101064A Pending JPH02278038A (en) | 1989-04-20 | 1989-04-20 | Supporting structure of photo beam scanning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02278038A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010005472A (en) * | 2009-10-15 | 2010-01-14 | Ge Healthcare Japan Corp | Medical imaging apparatus |
| JP2010052818A (en) * | 2008-08-29 | 2010-03-11 | Zenkoku Nogyo Kyodo Kumiai Rengokai | Assembly package |
| JP2014152866A (en) * | 2013-02-08 | 2014-08-25 | Sankei Giken:Kk | Multifunctional vibration proof mount |
| CN110566629A (en) * | 2019-09-20 | 2019-12-13 | 彭茄琪 | Resonance eliminating device for mainframe based on vibration compensation |
| CN111895032A (en) * | 2020-06-19 | 2020-11-06 | 高新华 | Spring selection system using platen control |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5512429A (en) * | 1978-07-12 | 1980-01-29 | Fuji Photo Film Co Ltd | Radioactive image reader |
| JPS6019835B2 (en) * | 1980-08-25 | 1985-05-18 | 三洋電機株式会社 | Vending machine timer control method |
-
1989
- 1989-04-20 JP JP1101064A patent/JPH02278038A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5512429A (en) * | 1978-07-12 | 1980-01-29 | Fuji Photo Film Co Ltd | Radioactive image reader |
| JPS6019835B2 (en) * | 1980-08-25 | 1985-05-18 | 三洋電機株式会社 | Vending machine timer control method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010052818A (en) * | 2008-08-29 | 2010-03-11 | Zenkoku Nogyo Kyodo Kumiai Rengokai | Assembly package |
| JP2010005472A (en) * | 2009-10-15 | 2010-01-14 | Ge Healthcare Japan Corp | Medical imaging apparatus |
| JP2014152866A (en) * | 2013-02-08 | 2014-08-25 | Sankei Giken:Kk | Multifunctional vibration proof mount |
| CN110566629A (en) * | 2019-09-20 | 2019-12-13 | 彭茄琪 | Resonance eliminating device for mainframe based on vibration compensation |
| CN111895032A (en) * | 2020-06-19 | 2020-11-06 | 高新华 | Spring selection system using platen control |
| CN111895032B (en) * | 2020-06-19 | 2022-01-21 | 宝应电工厂 | Spring selection system using platen control |
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