WO2016125982A1 - Light collector for cr and cr system comprising same - Google Patents

Abstract

Disclosed is a CR cassette for providing an imaging plate for CR to a CR reader. The CR cassette comprises: a sliding plate on which the imaging plate is placed; and a cassette shell accommodating the sliding plate therein and having an opening part, which allows the entry/exit of the sliding plate, formed on one side thereof, wherein the cassette shell comprises a first locking pin hole and a second locking pin hole formed on both inner side surfaces thereof facing each other, and the sliding plate comprises a first locking pin and a second locking pin formed on both side surfaces thereof so as to be laterally retractable with respect to each other, and an elastic member for deflecting each of the first locking pin and the second locking pin in a direction in which the first locking pin hole and the second locking pin hole are inserted.

Description

Optical collector for CR and CR system comprising the same

The present invention relates to a computed radiography (CR) system for acquiring an image stored on an imaging plate, and more particularly to light emitted from a photostimurable phosphor of an imaging plate with respect to laser light incident on the imaging plate. The present invention relates to a CR system including a CR reader configured to obtain an X-ray image information from an imaging plate inserted into its own using a CR optical collector and a CR cassette configured to efficiently collect the photomultiplier into an optoelectronic multiplier.

The CR system is a successful replacement of the existing analog screen / film (SF) system, and instead of the X-ray film of the existing analog film system, X-ray imaging is performed using an imaging plate containing a fluorophore phosphor. It is configured to read the X-ray image information stored in the imaging plate and then. In order to acquire X-ray image information, red light (eg, 670 nm wavelength light) is scanned on the imaging plate, and the X-ray information stored in the imaging plate is emitted from the fluorophore of the imaging plate by red light scanning (eg, , 400nm wavelength light) is transmitted to the photomultiplier tube. The optical signal is converted into an electrical signal in an optoelectronic multiplier, which is amplified in an amplifier and then converted from an analog signal to a digital signal through an A / D converter. Image processing is performed using the converted digital signal to produce an appropriate image in accordance with the diagnostic purpose. Compared with the existing analog screen / film (SF) system, the CR system has many advantages such as good spatial resolution, good contrast resolution, small X-ray absorption difference, and various image processing. Have

In such a CR system, the light collector plays a very important role in collecting light reflected from the imaging plate (especially blue light) and transmitting it to the photomultiplier tube. One example of a conventional optical collector, as disclosed in US Pat. No. 6,696,698, WO2002003137 and US20140166886, is to use an optical fiber bundle that gradually narrows toward the photomultiplier, due to the large amount of space present between the optical fibers. It has a fundamental disadvantage of high light loss. As another example of the conventional optical collector, as disclosed in US Pat. No. 6,987,280, US20040159805, etc., there is a light inlet corresponding to the width of the imaging plate on one side and a light chamber connected to a plurality of photomultiplier tubes on the other side, which is reflected light. There is a large difference in the amount of received light depending on the thickness of the collector surface to be received, and there are still many limitations in increasing the amount of received light. In particular, since the light signal is processed through two or more photomultiplier tubes, the process of spreading the software is further complicated. There was a feeling.

On the other hand, in the CR system, the surface of the imaging plate has a Lambertian reflectance characteristic in which the reflection output distribution is proportional to cos θ for an incident laser light of approximately 670 nm wavelength. Both types of light collectors described above are designed in consideration of the surface of an imaging plate having Lambertian reflection characteristics. However, the prior arts have not been very successful in significantly increasing the amount of received light using lambertian reflection characteristics.

Previously, roller drive type CR readers in which the imaging plate was separated from the cassette and transported by a drive mechanism comprising a set of rollers were common, and such roller type CR readers require the imaging plate to be flexible. The flexible imaging plate is supplied to a defined position by a set of pinch rollers. At this time, the imaging plate is in contact with the pinch rollers for a considerable time and is subject to bending deformation, which has several adverse effects on the imaging plate.

In this regard, a CR system has been proposed that includes a CR reader using a rectangular sliding plate on which an imaging plate is stacked and a CR cassette including a rectangular shell allowing sliding entry and exit of the sliding plate.

In such a CR system, the sliding plate on which the imaging plate is stacked must be completely hidden in the shell of the CR cassette so that it is normally shielded from external light or external contaminants, and only when the CR cassette is inserted into the tray of the CR reader. The sliding plate must be separated from the cassette shell so that the imaging plate is moved into the CR reader and exposed.

In order to restrain the movement of the sliding plate in the cassette shell, research has been conducted on the locking means for releasably locking between the cassette shell and the sliding plate, and a separate study on the means for removing and moving the sliding plate from the cassette shell. Is also being done. However, the locking means of the conventionally proposed CR cassette has a limitation in reliably restraining the sliding plate movement in the cassette shell in a structure that is easily released by an external force. In addition, the conventional CR cassette has a problem in reliability and safety because it protrudes outward so that a part of the front end of the sliding plate can be caught by the hook of the CR reader. In addition, the prior art had the possibility of misalignment of the sliding plate and various problems that can be caused thereby. In addition, there are many limitations in applying imaging plates of various specifications in one system.

According to the present invention solutions to the problems of the prior art are provided.

Another problem to be solved by the present invention is to use a dichroic filter array to transfer light in a long length region that is reflected across the width or length of the imaging plate into a narrow light chamber of a coupler coupled with a photomultiplier tube, It is to provide an optical collector for CR that can collect light more efficiently.

The problem to be solved by the present invention is a CR cassette in which the sliding plate is accommodated in the cassette shell in such a way that the locking pin provided on the sliding plate is elastically deflected in the locking pin holes provided on both inner sides of the cassette shell; When the CR cassette is connected to the tray of the CR reader, the CR unit and the transfer unit provided in the CR reader are unlocked between the sliding plate and the cassette shell and successively pulled the sliding plate to a predetermined position. To provide a system.

According to one aspect of the invention, there is provided a light collector for CR that collects the light reflected from the imaging plate when the laser light is incident on the imaging plate, the CR light collector, the photomultiplier tube located above the imaging plate ; A coupler coupled to the photomultiplier and defining a light inlet through which light enters; And a light transmitting unit for transmitting the reflected light from the imaging plate to the light inlet over the entire width of the imaging plate, the light transmitting unit defining a light path in a direction crossing the width of the imaging plate. And a roic filter array and optical elements for guiding light through the dichroic filter in the dichroic filter array into the light inlet.

According to another aspect of the present invention, there is provided a CR cassette for providing an CR imaging plate to a CR reader, the CR system comprising: a sliding plate on which an imaging plate is placed; And a cassette shell accommodating the sliding plate therein and having openings at one side thereof to allow entry and exit of the sliding plate, wherein the cassette shells include first locking pinholes and second locking pinholes on both inner side surfaces facing each other. The sliding plate may include a first locking pin and a second locking pin, which are installed on both sides of the first locking pin and a second locking pin, and the first locking pin and the second locking pin, respectively. And an elastic member biased in a direction to be fitted into the second locking pinhole.

According to an aspect of the present invention, there is provided a CR system comprising: a CR cassette including a sliding plate on which an imaging plate is placed, and a cassette shell accommodating the sliding plate therein and having an opening configured at one side to allow entry of the sliding plate; A CR reader for acquiring an image from the imaging plate, wherein the cassette shell includes first locking pinholes and second locking pinholes on both inner sides facing each other, and the sliding plate has a first access formed at a front end thereof. The first pressing in the groove and the second access groove, the first pressing tongue and the second pressing tongue located in the first access groove and the second access groove, and the first access groove and the second access groove, respectively. A first locking pin and a second locking pin secured to the tongue and the second pressing tongue, the first locking pin and the second locking pin being laterally mounted to each of both sides of the sliding plate, and the first locking pin and the second locking pin. An elastic member for biasing each of the pins in a direction to be fitted into each of the first locking pinhole and the second locking pinhole, wherein the CR reader comprises: a frame including a bottom plate and a cover; A tray unit provided at one end of the frame, a finger unit for unlocking between the cassette shell and the sliding plate when the CR cassette is connected to the tray unit, and the finger unit while the finger unit is holding the sliding plate. And a transfer unit configured to move the sliding plate to a predetermined position, wherein the finger unit presses the first pressing pin and the second pressing tongue inward to press the first locking pin and the second locking pin. And a finger set for retracting in a direction away from the first locking pinhole and the second locking pinhole.

According to another aspect of the present invention, a CR system includes a sliding plate on which an imaging plate is placed, and a cassette shell having an opening formed at one side to receive the sliding plate therein and to allow entry and exit of the sliding plate. Different first and second CR cassettes; And a CR reader for acquiring an image from an imaging plate provided through one of the CR cassettes of the first and second CR cassettes, wherein the cassette shells of each of the first and second CR cassettes are on both inner sides facing each other. And a first locking pinhole and a second locking pinhole, wherein each of the sliding plates of the first and second CR cassettes includes a first access groove and a second access groove formed at a front end thereof, and the first access groove and the second access groove. A first pressurizing tongue and a second pressurizing tongue positioned in an access groove, and fixed to the first pressurizing tongue and the second pressurizing tongue in each of the first access groove and the second access groove, respectively, on both sides of the sliding plate. The first locking pin and the second locking pin, and the first locking pin and the second locking pin, which are installed to be protruded laterally with respect to the first locking pin hole and the second locking pin hole, respectively, Losing room And a resilient member for deflecting the cross section, wherein the CR reader includes a frame including a bottom plate and a cover, a tray unit provided at one end of the frame, and the first CR cassette or the second CR cassette disposed at the tray unit. And a finger unit for unlocking the cassette shell and the sliding plate when connected, and a transfer unit for setting the sliding plate to a predetermined position by moving the finger unit while the finger unit is holding the sliding plate. The finger unit includes a first locking pin and a second locking pin provided on the sliding plate of the first CR cassette by pressing the first pressing tongue and the second pressing tongue provided on the sliding plate of the first CR cassette inward. A first finger set for retracting from the first locking pinhole and the second locking pinhole provided in the cassette shell of the first CR cassette in a direction of exiting the second CR pin; Pressing the first pressing tongue and the second pressing tongue provided on the sliding plate of the cassette inward, the first locking pin and the second locking pin provided on the sliding plate of the second CR cassette are inserted into the cassette shell of the second CR cassette. And a second set of fingers for retracting in the direction away from the first locking pinhole and the second locking pinhole.

In the present specification, the CR system is defined to include both a CR reader and a CR cassette.

According to the present invention, the sliding plate can be reliably accommodated in the cassette shell in such a way that the locking pins provided in the sliding plate are elastically deflected in the locking holes provided on both inner sides of the cassette shell, and the tray of the CR reader When inserted and connected to the inlet, a CR cassette is implemented in which the unlocking of the sliding plate and the movement of the sliding plate can be continuously performed by means provided in the CR reader.

In addition, according to the present invention, the CR cassette in which the sliding plate is accommodated in the cassette shell in such a way that the locking pins provided in the sliding plate are elastically deflected in the locking holes provided in the inner side surfaces of the cassette shell, and the CR cassette. Is connected to the tray of the CR reader, the CR system is implemented so that the finger unit and the transfer unit provided in the CR reader can unlock between the sliding plate and the cassette shell and successively drag the sliding plate to a predetermined position. do.

1 is a diagram for explaining a first CR cassette.

FIG. 2 is a diagram for describing a second cassette having a width smaller than that of the first CR cassette shown in FIG. 1.

3 is a perspective view of a CR reader of a CR system according to an embodiment of the present invention viewed from a first direction so as to see a tray entrance.

4 is a perspective view illustrating a CR reader of the CR system in a second direction opposite to the first direction.

5 is a side view illustrating a CR reader of the CR system.

FIG. 6 is an enlarged perspective view of the CR tray unit with the CR reader removed with some elements at the tray inlet side; FIG.

7 is a plan sectional view showing a state in which a first CR cassette is connected to a tray of a CR reader and a first sliding plate in the first CR cassette is moved to a predetermined position in the CR reader.

8 is a cross-sectional view illustrating a fixing unit for fixing a cassette shell in the state shown in FIG.

9 is a plan sectional view showing a state in which a second CR cassette is connected to a tray of the CR reader and a second sliding plate in the second cassette is moved to a predetermined position in the CR reader.

10 is a cross-sectional view for explaining a state in which the fixing unit fixes the cassette shell of the second CR cassette in the state shown in FIG.

11 is a view for explaining the locking mechanism of the tray cover.

12 is a view for explaining a state in which the finger unit releases the lock between the sliding plate and the cassette shell in the first CR cassette.

Fig. 13 is a perspective view showing the CR optical collector in one direction.

14 is a perspective view showing the CR optical collector from another direction.

It is a front view for demonstrating the CR optical collector.

FIG. 16 is a sectional view showing the CR optical collector taken along the line I-I of FIG.

17A and 17B are views for explaining the shape of the dichroic filter and the first auxiliary dichroic filter in the dichroic filter array.

FIG. 18 is a table illustrating an example in which dichroic filters having different reflectance-transmittances are applied to a dichroic filter array of an optical collector for CR.

19 is a table showing another example in which dichroic filters having different reflectance-transmittances are applied to a dichroic filter array of an optical collector for CR.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings and their descriptions are provided for the purpose of helping those skilled in the art to understand the present invention. Accordingly, the drawings and description should not be interpreted as limiting the scope of the invention.

1 is a view for explaining a first CR cassette, Figure 2 is a view for explaining a second cassette having a smaller width than the first CR cassette shown in Figure 1, Figure 3 is an embodiment of the present invention FIG. 4 is a perspective view showing a CR reader of the CR system in a first direction to see a tray inlet, FIG. 4 is a perspective view showing a CR reader of a CR system in a second direction opposite to the first direction, and FIG. FIG. 6 is a side view illustrating the CR reader of the CR system, and FIG. 6 is an enlarged perspective view of the CR tray unit with some elements of the CR reader removed from the tray inlet side, and FIG. 7 is a first CR cassette connected to the tray of the CR reader. 9 is a cross-sectional view illustrating a state in which a first sliding plate in a first CR cassette is moved to a predetermined position in a CR reader, and FIG. 8 is a cross-sectional view for explaining a fixing unit for fixing a cassette shell in the state shown in FIG. Is the second CR 10 is a cross sectional view showing a state in which a cassette is connected to a tray of the CR reader and a second sliding plate in the second cassette is moved to a predetermined position in the CR reader, and FIG. 10 is a cassette of the second CR cassette in the state shown in FIG. 11 is a cross-sectional view illustrating a state in which a shell is fixed, and FIG. 11 is a view illustrating a locking mechanism of a tray cover, and FIG. 12 is a state in which a finger unit releases a lock between a sliding plate and a cassette shell in a first CR cassette. A diagram for explaining.

According to one embodiment, the first CR cassette 1000, as shown in Figure 1, a cassette shell 1100 having a thin thickness and defining a rectangular space having an opening at one end, and the cassette shell in the locked state A rectangular sliding plate 1200 housed entirely without protrusions in 1100. The cassette shell 1100 defines a track on which the inner side surfaces 1110 and 1120 allow sliding of the sliding plate 1200. In addition, first and second locking pinholes 1112 and 1122 are provided at both inner side surfaces of the cassette shell 1100, that is, the first inner side surface 1110 and the second inner side surface 1120. The first and second locking pinholes 1112 and 1122 are located close to one side opening allowing entry and exit of the sliding plate 1210 of the cassette shell 1100.

The sliding plate 1200 includes a main plate 1210 on which an imaging plate is stacked, and an end portion 1220 coupled to one end of the main plate 1210 to face an opening of the cassette shell 1000.

The end portion 1220 includes a central end piece 1221 and first and second outer end pieces 1222 and 1223 coupled to one end of the main plate 1210. In addition, each of the first and second outer end pieces 1222 and 1223 has one side in contact with the inner side surface of the cassette shell 1000 and a plane, and the other side is spaced apart from both sides of the central end piece 1221. have. Accordingly, between the first outer end piece 1222 and the central end piece 1221, and between the second outer end piece 1223 and the central end piece 1221, the first access groove 1224a and the second access groove ( 1224b). The sliding plate 1200 has both side surfaces, more specifically, the end portion 1220 includes a first locking pin 1226a and a second locking pin 1226b that are protruded laterally on each of the two side surfaces. The first locking pins 1226a and 1226b are inserted into the first and second locking pinholes 1112 and 1122 formed at both inner side surfaces of the cassette shell 1100 at the most advanced locking position, so that the cassette shell 1000 Lock the movement of the sliding plate (1200).

The first and second locking pins 1226a and 1226b protrude outward with respect to the side surface of the sliding plate 1200 by an elastic deflection force in the lateral direction by the elastic members 1225a and 1225b. It is fitted into the second locking pinholes 1112 and 1122.

The first locking pin 1226a extends laterally through the first outer end piece 1222 with the proximal end positioned in the first access groove 1224a, and the second locking pin 1226b proximate the proximal end. The second outer end piece 1223 penetrates laterally while being located in the second access groove 1224b. The elastic members 1225a and 1225b, more specifically, the compression springs 1225a and 1225b, are arranged between the first and second outer end pieces 1222 or 1223 and the central end piece 1221, that is, the first and second ends. The base ends of the first and second locking pins 1226a and 1226b are elastically supported while being supported by the central end piece 1121 in the access grooves 1224a and 1224b.

The first and second locking pins 1226a and 1226b compress the elastic members 1225a and 1225b by an external force, so that the first and second locking pins 1226a and 1226b extend from the locking position protruding from the side surface of the sliding plate 1200. The retraction can be made to an unlocking position which does not protrude relative to the side. The restoring force of the elastic members 1225a and 1225b advances the first and second locking pins 1226a and 1226b from the unlocking position to the locking position.

In addition, the end portion 1220 may include first and second pressing tongues fixed to the first and second locking pins 1226a and 1226b in each of the first and second access grooves 1224a and 1224b. (press tongue; 1227a, 1227b). Each of the first access groove 1224a and the second access groove 1224b is defined by the “L” shape of each of the first and second outer end pieces 1222 or 1223. Press tongues 1227a and 1227b are provided with spaces for pressing the first and second press tongues 1227a and 1227b outward. The fingers of the finger unit described below can be put in this space to press the first and second press tongues 1227a and 1227b in a direction closer to each other. In response to the elastic force of the elastic members 1225a and 1225b, the pressing force applied to the first and second pressure tongues 1227a and 1227b in a direction approaching each other is the first and second locking pins 1226a and 1226b. Retracts the first and second locking pins 1226a and 1226b from the first and second locking pinholes 1112 and 1122. This departure unlocks the sliding plate 1200. In addition, each of the first and second pressure tongues 1227a and 1227b may be provided with a locking groove r through which the locking protrusion of the finger is caught.

In addition, the end portion 1220 may include a dummy recess 1221a between the first access groove 1224a and the second access groove 1224b, and more specifically, in the middle of an edge of the central end piece 1221. It may include. The dummy groove 1221a accommodates a specific finger which does not work with any pressing tongue provided in the first CR cassette 1000 among the finger units described below, and serves to prevent interference with the finger.

The CR system according to this embodiment, which will be described in more detail below, uses a first CR cassette 1000 and a second CR cassette 2000 having a smaller size (especially a width) than that of the first CR cassette 1000 in common. It is supposed to be. Furthermore, the first CR cassette 1000 and / or the second CR cassette 2000 may be used by stacking two or more types of imaging plates having substantially the same width or slightly different widths and different lengths, and thus, the present system. Through the use of the first CR cassette 1000 and the second CR cassette 2000, which are different in size, it is possible to use three or more imaging plates.

According to one embodiment, the second CR cassette 2000, as shown in Figure 2, the cassette shell 2100 having a thin thickness and defining a rectangular space having an opening at one end, and the cassette shell in the locked state And a rectangular sliding plate 2200 housed entirely within 2100. The cassette shell 2100 defines a track on which both inner side surfaces 2110 and 2120 allow sliding of the sliding plate 2200. In addition, first and second locking pinholes 2112 and 2122 are provided at both inner side surfaces of the cassette shell 2100, that is, the first inner side surface 2110 and the second inner side surface 2120. The first and second locking pinholes 2112 and 2122 are located close to the opening of the cassette shell 2100.

The sliding plate 2200 includes a main plate 2210 on which an imaging plate is stacked, and an end portion 2220 coupled to one end of the main plate 2210 and facing the inlet of the cassette shell 2000.

The end portion 2220 includes a central end piece 2221 and first and second outer end pieces 2222 and 2223 coupled to one end of the main plate 2210. In addition, each of the first and second outer end pieces 2222 and 2223 has one side in contact with the inner side surface of the cassette shell 2000 and a plane, and the other side thereof is spaced apart from both sides of the central end piece 2221. have. Accordingly, a first access groove 2224a and a second access groove 2224b between the first end piece 2222 and the central end piece 2221 and between the second end piece 2223 and the central end piece 2221. Is formed. The sliding plate 2200 includes a first locking pin 2226a and a second locking pin 2226b on both sides, more specifically, on both sides of the end portion 2220. The first locking pins 2226a and 2226b are inserted into the first and second locking pinholes 2112 and 2122 formed at both inner side surfaces of the cassette shell 2100 at the most advanced locking position, so that the cassette shell ( 2000) to lock the movement of the sliding plate 2200.

The first and second locking pins 2226a and 2226b protrude outward with respect to the side surface of the sliding plate 2200 by an elastic deflection force in the lateral direction by the elastic members 2225a and 2225b. It is fitted into the second locking pinholes 2112 and 2122.

The elastic members 2225a and 2225b, more specifically, the compression springs 2225a and 2225b, are arranged between the first and second outer end pieces 2222 or 2223 and the central end piece 2221, that is, the first and second ends. The base ends of the first and second locking pins 2226a and 2226b are elastically supported while being supported by the central end piece 2221 in the access grooves 2224a and 2224b. The first and second locking pins 2226a and 2226b compress the elastic members 2225a and 2225b by an external force, so that the first and second locking pins 2226a and 2226b protrude from the locking position protruding from the side surface of the sliding plate 2200. The retraction can be made to an unlocking position which does not protrude relative to the side. Restoring forces of the elastic members 2225a and 2225b advance the first and second locking pins 2226a and 2226b from the unlocking position to the locking position.

In addition, the end portion 2220 may include first and second pressing tongues fixed to the first and second locking pins 2226a and 2226b, respectively, in the first and second access grooves 2224a and 2224b, respectively. (press tongue; 2227a, 2227b). Each of the first access grooves 2224a and the second access grooves 2224b is pressed by the first and second pressing tongues by the “L” shape of each of the first and second outer end pieces 2222 or 2223. A space for pressing the first and second press tongues 2227a and 2227b from the outside to the outside of each of the tongues 2227a and 2227b is secured. The fingers of the finger unit described below can be inserted into this space to press the first and second press tongues 2227a and 2227b. Pressing the first and second pressing tongues 2227a and 2227b against the elastic force of the elastic members 2225a and 2225b retracts the first and second locking pins 2226a and 2226b to allow the first and second locking pins 2226a and 2226b to retract. And the second locking pins 2226a and 2226b are separated from the first and second locking pinholes 2112 and 2122. This departure unlocks the sliding plate 2200. In addition, each of the first and second pressure tongues 2227a and 2227b may be provided with a locking groove (r) to catch the step of the finger.

In the case of the first CR cassette 1000, a dummy groove 1221a is provided at one end 1220 of the sliding plate 1200 (see FIG. 1), but the second cassette 2000 is a finger unit described below. There is no finger left to operate, so there is no need for additional dummy grooves.

According to an exemplary embodiment, the CR reader C may include a frame 3000 including a bottom plate 3100, a cover 3200, and the like, as illustrated in FIGS. 3 to 12. When the CR cassette 1000 or 2000 (see FIGS. 1 and 2) is connected to the tray unit 4000 provided at one end and the tray 4001 of the tray unit 4000, the sliding plate 1200 or 2200 is moved in the forward position. ) Hold the pressure tongue 1227a, 1227b or 2227a, 2227b and press it inward to retract the locking pins 1226a, 1226b or 2226a, 2226b from the locking pinholes 1112, 1122 or 2112, 2122. The finger unit 5000 for releasing the locking between the cassette shell 1100 or 2100 and the sliding plate 1200 or 2200, and the advanced finger unit 5000 is retracted and stacked on the sliding plate 1200 or 2200. Transfer unit 6000 for setting the imaging plate to a predetermined position in the CR reader (C) Include.

In addition, the CR reader C includes a plurality of shell fixing units 7000 for fixing the cassette shell 1100 or 2100 when the cassette 1000 or 2000 is connected to the tray 4001 of the tray unit 4000. , 7000, 7000, and a plurality of horizontal support parts for supporting the sliding plate 1200 which is moved by the finger unit 5000 and the transfer unit 6000 at a plurality of points near the inlet of the tray 4001 ( 8000a, 8000b, 8000c) and the like. In addition, the CR reader C includes a laser light source for injecting red laser light into the input imaging plate, and a light collector 1 for collecting an image by collecting blue light reflected from the imaging plate.

The finger unit 5000 includes three fingers constituting the first finger set and the second finger set, that is, the first finger 5100, the second finger 5200, and the third finger 5300. The first finger 5100 and the second finger 5200 may include a first finger set that participates in unlocking the first CR cassette 1000 when the first CR cassette 1000 is connected to the tray 4001. And the first finger 5100 and the third finger 5300 participate in unlocking the second CR cassette 2000 when the second CR cassette 2000 is connected to the tray 4001. Configure a second finger set. The third finger 5300 is integrally connected with the third finger 5300 while being positioned between the first finger 5100 and the second finger 5200. In addition, the finger unit 5000 may spread or pinch between the first finger 5100 and the second finger 5200 constituting the first finger set and the first finger 5100 constituting the second finger set. ) And a finger transfer mechanism for moving the first finger 5100 and the second and third fingers 5200 and 5300 to spread or pinch between the third finger 5300 and the third finger 5300.

The finger conveying mechanism includes a horizontal rotating shaft 5400 having a forward thread portion and a reverse thread portion, and a linear slide guide of the first finger 5100 and the second and third fingers 5200 in the horizontal direction (or the width direction). The base block 5500 includes the first and second guide parts 5510 and 5520. In addition, the finger transfer mechanism includes a rotation shaft drive including a motor 5610 and driven and driving gears 5611 and 5612 to rotate the rotation shaft 5400 in a forward direction and a reverse direction. When the rotation shaft 5400 rotates, the first finger 5100 and the second and third fingers 5200 are opposite to each other along the first and second guide parts 5510 and 5520 by directions of threaded parts opposite to each other. Linear motion in the direction of

In addition, the transfer unit 6000 is installed in the longitudinal direction on the bottom plate 3100 and the longitudinal LM guide 6100, the base block (5500) of the finger unit 5000 is slidably coupled, and the finger The base block 5500 of the unit 500 includes a longitudinal feed screw 6200 that is threaded. When the longitudinal feed screw 6200 rotates, the finger unit 5000 moves forward or backward in a linear direction along the LM guide 6100. The transfer unit 6000 may include a motor 6610 and a screw driver including a main pulley, a driven pulley, and a belt 6611, 6612, and 6613 for forward or reverse rotation of the longitudinal feed screw 6200. .

When the transfer unit 6000 advances the finger unit 5000 to the maximum, the first finger 5100 constituting the first finger set and the end or second finger set constituting the second finger 5200 are formed. Ends of the three fingers 5100 and the third finger 5300 are provided in the first recess 1224a or 2224a provided in the sliding plate 1200 or 2200 of the first or second cassette 1000 or 2000; 2) and into the second recess 1224b or 2224b (see FIGS. 1 and 2) and located outside of the first pressing tongue 1227a or 2227a and outside of the second pressing tongue 1227b or 2227b.

When the finger transfer mechanism is operated, the first finger 5100 and the third finger 5300 constituting the second finger set or between the first finger 5100 and the second finger 5200 constituting the first finger set. As the is compressed, the first pressing tongue 1227a or 2227a and the second pressing tongue 1227b or 2227b are pressed inward. As the first pressing tongue 1227a or 2227a and the second pressing tongue 1227b or 2227b are pressed, the first locking pin 1226a or 2226a and the second locking pin 1226b or 2226b are elastic members 1225a or 1225b. , Retracting inward while countering the elastic deflection force of 2225a, 2225b, so that the first locking pin 1226a or 2226a and the second locking pin 1226b or 2226b are locked pinholes 1112, 1122 or 2112, 2122. Exits, thereby unlocking between the cassette shell 1100 or 2100 and the sliding plate 1200 or 2200.

In the unlocked state as described above, the first, second or third fingers 5100, 5200, or 5300 are engaged or hanging with them while pressing the pressure tongue 1227a, 2227a, 1227b or 2227b. For reliable engagement or engagement, the first, second, and third fingers 5100, 5200, and 5300 are engaged by the engaging grooves r of the pressure tongues 1227a, 1227b, 2227a, and 2227b. It is preferred to have a (shown well in FIG. 12).

According to an embodiment, the tray unit 4000 has a width corresponding to the width of the first CR cassette 1000 and is smaller than the first CR cassette 1000 and the first CR cassette 1000. And a tray 4001 defining an inlet to which the second CR cassette 2000 is inserted and connected.

In addition, the tray unit 4000 includes a first tray cover 4100 and a second tray cover 4200 rotatably installed inside the inlet of the tray by hinge means.

The first tray cover 4100 has a width corresponding to the width of the second CR cassette 2000. When the second CR cassette 2000 is inserted into and connected to the tray 4001, the second CR cassette 2000 is connected. ), And rotates to open a part of the inlet of the tray 4001.

In this case, the second tray cover 4200 blocks the remaining area of the inlet of the tray 4001 in a closed state to block light or external contaminants from entering. The tray unit 4000 includes a cover locking mechanism that locks the movement of the tray cover 4200 in a closed state to block a portion of the entrance of the tray 4000 only when the second CR cassette 2000 is connected.

The cover locking mechanism includes a locking fork 4310 with a pair of branches 4311 and 4312 and a fork hinge 4320 to allow the locking fork 4310 to rotate. A side end portion of the second tray cover 4200 in the closed state is locked between the pair of branch portions 4311 and 4312 to be locked.

When the first CR cassette 1000 is inserted into and connected to the tray 4001, both the first tray cover 4100 and the second tray cover 4200 should be rotated and opened. To this end, the locking of the second tray cover 4200 should be released. In this embodiment, the end of the first CR cassette 1000 into which the inclined surface of the first branch portion 4311 of the locking fork 4310 is inserted is inserted. The second tray cover 4200 is unlocked by being rotated in a direction to release the locking about the fork hinge 4320.

In the cassette shell 1100 of the first CR cassette 1000, a plurality of bottom pin holes 1115, 1115, and 1115 are formed on a bottom surface of the cassette shell 1100 connected to the tray 4001. In addition, the cassette shell 2100 of the second CR cassette 2000 also includes two or more bottom pin holes 2001 on the bottom surface of the position where the cassette shell 2100 is connected to the tray 4001.

At least one bottom pin hole 1115 provided in the cassette shell 1100 of the first CR cassette 1000 is larger than the bottom pin hole 2115 provided in the cassette shell 2100 of the second CR cassette 2000. The bottom pin hole 2115 provided in the cassette shell 2100 of the second CR cassette 2000 is, when connected to the tray 4001, its position is the cassette shell 1100 of the first CR cassette 1000. The bottom pin hole (1115) provided in the same is determined as the position. On the other hand, each of the above-described shell fixing unit 7000, the bottom pin hole of the cassette shell (1100 or 2100) when the first or second CR cassette (1000, 2000) is connected to enter the tray 4001 And a shell fixing pin 7100 fitted to the 1115 or 2115.

The shell fixing pin 7100 receives an elastic deflection force in an upward direction by the spring 7200. The shell fixing pin 7100 is pushed by the first or second CR cassettes 1000 and 2000 to enter the elastic deflection force of the spring 7200. Retreating downward while being opposed, and when the first or second CR cassettes 1000 and 2000 are completed, they are lifted by the elastic restoring force of the spring (not shown) and are fitted into the bottom pin holes 1115 or 2115.

The shell fixing pin 7100 is cam surface inclined at the end to be pressed down by the first or second CR cassette (1000, 2000) without hindering the entry of the first or second CR cassette (1000, 2000) 7210 (shown in FIG. 8).

In addition, the shell fixing unit 7000 according to the present embodiment includes a pin lowering driving unit for automatically lowering the shell fixing pins 7100 inserted into the bottom pin holes 1151 and 2115. The pin lowering drive unit is a rack gear 7310 which is pushed and moved by the advanced finger unit 5000 or its base block 5500 when the finger unit 5000 or its base block 5500 is advanced. ), A pinion gear 7320 rotated by meshing with the rack gear 7310, and a rack tooth type 7330 formed on the shell fixing pin 7100 so as to mesh with the pinion gear 7320. . If the pin lowering drive can be operated by the moving finger unit 5000 or its base block 5500 to lower the shell fixing pin 7100, other mechanisms known in lieu of the mechanism including the rack gear described above Note that can be used.

As mentioned above, the sliding plate 1200 in which the plurality of horizontal support parts 8000a, 8000b, and 8000c move by the finger unit 5000 and the transfer unit 6000 is located near the entrance of the tray 4001. It is provided to support. Among the plurality of horizontal support parts 800a, 800b, and 800c, the first and third horizontal support parts 8000a and 8000c are sliding plates of the second CR cassette 2000 when the second CR cassette 2000 is connected. Participate in supporting (2200). At this time, the second horizontal support portion 8000b does not participate. When the first CR cassette 1000 is connected, all of the plurality of horizontal support parts 800a, 800b, and 800c, that is, all of the first, second and third horizontal support parts 8000a and 8000b are connected to the first CR cassette 1000. Participate in supporting the sliding plate 1200 of the cassette (1000).

The operation of the finger unit 5000 will be described as follows when the first CR cassette 1000 is used and the second CR cassette 2000 is used.

When using the first CR cassette 1000, the finger unit 5000, as shown best in Figure 12, using only the first finger 5100 and the second finger 5200, the first CR cassette ( 1000, the sliding plate 1200 is unlocked. The first finger 5100 and the second finger 5200 enter the first recess 1224a and the second recess 1224b provided in the sliding plate 1200 of the first CR cassette 1000. The first pressing tongue 1227a and the second pressing tongue 1227b are pressed inward from the outside of the first pressing tongue 1227a and the outside of the second pressing tongue 1227b to form the first locking pin 1226a and the first pressing tongue 1227a. The locking pin 1226b is retracted inward, thereby releasing the locking between the cassette shell 2100 and the sliding plate 2200. In this case, the third finger 5300 plays no role while entering the dummy recess 1221a in the middle of the front edge of the sliding plate 1200.

When the second CR cassette 2000 is used, the finger unit 5000 may use only the first finger 5100 and the third finger 5300 as shown in FIG. 2000) unlock the sliding plate 2200. The first finger 5100 and the third finger 5300 may include a first recess 2224a (see FIG. 2) and a second recess 2224b provided in the sliding plate 2200 of the second CR cassette 2000. 2, and press inwardly the first pressing tongue 2227a and the second pressing tongue 2227b from the outside of the first pressing tongue 2227a and the outside of the second pressing tongue 2227b. The first locking pin 2226a and the second locking pin 2226b are retracted inward, thereby releasing the locking between the cassette shell 2100 and the sliding plate 2200. At this time, the second finger 5200 does not play any role while being located in an empty space outside the one edge of the sliding plate 2200.

FIG. 13 is a perspective view showing the CR optical collector in one direction, FIG. 14 is a perspective view showing the CR optical collector in another direction, FIG. 15 is a front view for explaining the CR optical collector, and FIG. 15 is a cross-sectional view showing the optical collector for CR taken along II in FIG. 15, wherein each of FIGS. 17A and 17B is a shape of a dichroic filter and a first auxiliary dichroic filter shape in a dichroic filter array. 18 is a table illustrating an example in which dichroic filters having different reflectance-transmittances are applied to a dichroic filter array of an optical collector for CR, and FIG. 19 is a dichroic having different reflectance-transmittances. This table shows another example of applying the filters to the dichroic filter array of the optical collector for CR.

13 to 19, it can be seen that the CR imaging plate 2 in which latent images are accumulated by radiation scanning. When X-ray imaging is performed using the imaging plate 2, a latent image having energy proportional to the X-ray injection amount is present in the imaging plate 2. When red light having a wavelength of 670 nm is incident on the imaging plate 2 having the latent image, the light is converted into blue light having a wavelength of 400 nm by the photostimurable phosphor of the imaging plate 2 and then reflected. In order to obtain an image signal from the latent image accumulated over the entire width of the imaging plate 2, a red laser light of 670 nm wavelength is incident over the entire width of the imaging plate 2. The light collector 1 collects the blue reflected light having a wavelength of 400 nm emitted from the imaging plate 2 into a single photomultiplier tube 10 provided when the laser light is incident on the imaging plate 2. Play a role.

The surface of the imaging plate 2 has a Lambertian reflectance characteristic in which the reflection output distribution is proportional to cos θ with respect to the incident laser light. The CR light collector 1 has a Lambertian image of the imaging plate 2. By using the reflection characteristic, it is configured to receive the reflected light, preferably the reflected light of preferably 45 degrees to 60 degrees. In addition, the CR optical collector 1 is provided with a photomultiplier tube 2 at a position biased near one edge of the imaging plate 2, that is, near the second corner 2b, but is described in detail below. It is configured to transmit the blue light reflected from the imaging plate 2 over the entire width to the vicinity of one side of the imaging plate 2 to collect in the photomultiplier tube (10).

The photocollector 1 for CR includes an optoelectronic multiplier 10 which is positioned at an edge of one side of the imaging plate 2, that is, near the second corner 2b above the imaging plate 2, and the photoelectron. A coupler 20 defining a light inlet 22 through which light enters the multiplier tube 10, and an optical path across the width of the imaging plate 2, forming an optical path across the width of the imaging plate 2. It includes a light transmission unit 30 for transmitting the reflected light from the imaging plate (1) to the inlet of the coupler 20.

In addition, the light transfer unit 30 is a dichroic filter array (A) defining an optical path in a direction crossing the width of the imaging plate (2), and the end dike of the dichroic filter array (A) Optical members 32a, 32b, 32c for guiding the light passing through the roic filter 31f into the light inlet 22;

The dichroic filter array A crosses the width of the imaging plate 2 from near the first edge 2a of the imaging plate 2 to near the second edge 2b of the imaging plate 2. Dichroic filters 31a, 31b, 31c, 31d, 31e, 31f (collectively 31) arranged in the direction of zipping. In addition, the dichroic filter array A is arranged on the rear side prior to the first (or beginning) dichroic filter 31a, ie, the first edge 2a rather than the first dichroic filter. And a tail mirror 33 positioned closer to the. The tail mirror 33 has the same shape as the dichroic filters 31 and is inclined at the same angle.

The dichroic filter array A includes the tail mirror 33 and the dichroic filters 31a, 31b, 31c, 31d, 31e, and 31f; commonly referred to as 31. The dichroic filter array A includes the imaging plate 2 in the width direction. They are attached in a row and arranged side by side on one inclined base 37 which is arranged at an angle of 45 degrees with respect to the imaging plate 2 while traversing. Thus, the primary surface of the inclined base 37 with the dichroic filter array A is opened at an obtuse angle of 135 degrees with the imaging plate 2, which is an imaging plate having Lambertian reflection characteristics. (2) 45 degrees or more of light (more preferably, 45 to 60 degrees) of the reflected light when the laser light is incident on the surface vertically hits the inclined base 37 without being lost. A high light receiving rate to the photomultiplier tube 10 via the 33 and the dichroic filters 31a, 31b, 31c, 31d, 31e, 31f and / or the optical members 32a, 32b, 32c To be received.

The roof 39 is installed above the inclined base 37 to cover the upper ends of the dichroic filters 31a, 31b, 31c, 31d, 31e, and 31f. The inclined base 37 passes through the first and second corners 2a and 2b of the imaging plate 2 to a pair of supporters 38 and 38 positioned outside the imaging plate 2. Is supported by.

Each of the dichroic filters 31 includes a rear face and a front face. In addition, each of the dichroic filters 31 has the inclined base 37 so that an upper side thereof faces toward the second corner 2b side of the imaging plate 2 and a lower side thereof faces the opposite side of the first corner 2a side. Are inclined at an angle of 45 degrees to combine. In addition, the dichroic filter 31 is configured to transmit the light received at the rear face to the front and to reflect the light received at the front face to the front. Accordingly, each of the dichroic filters 31 reflects the light received from the front side of the reflected light from the imaging plate 2 toward the front side dichroic filter 31, and the rear side is the rear dike. The light received from the roic filter 31 is transmitted forward.

The imaging by placing all the dichroic filters 31a, 31b, 31c, 31d, 31e, and 31f in the dichroic filter array A as described above and having both transmittance and reflectance as described above. Blue light reflected through the entire width of the plate 2 can be sent to the vicinity of the photomultiplier tube 10. In order to increase the amount of received light and reduce the light loss, the dichroic filters 31a, 31b, 31c, 31d, 31e, and 31f in the dichroic filter array A are arranged to have a lower reflectance and a higher transmittance toward the front. Good to do. The sum of reflectance and transmittance of each dichroic filter 31 is at or near 100%.

In addition, each of the dichroic filters 31 has a shape of an image light narrowing upper portion wider than a lower portion so that a large amount of light can be transmitted by utilizing an upper side far from the imaging plate 2. In particular, each of the dichroic filters 31 includes an omitted portion 312 as shown in phantom in FIG. 5 under the opposite edge of the edge contacting the inclined base 37. Assuming that there is no ommit portion 312, a path of a considerable amount of light reflected from the imaging plate 2 and reflected below the front surface of the dichroic filter 31 enters the photomultiplier tube 10. Although it may be lost away from, the employing the omit portion 312, the light that is reflected from the imaging plate (2) and directed toward the lower portion of the dichroic filter 31 of the dichroic filter 31 After passing through the omit portion 312 without being reflected to the lower portion to reach the upper portion of the front surface of the dichroic filter 31 located in the rear of the dichroic filter 31 can be reflected forward.

Meanwhile, the light traveled by the dichroic filter array A to the vicinity of the second edge 2b of the imaging plate 2 where the photomultiplier 10 and the coupler 20 are located is mentioned above. The optical members 32a, 32b, and 32c enter the photomultiplier tube 10 through the coupler 20.

The optical members 32a, 32b, and 32c may be moved in the width direction through the dichroic filter array A, as well as in the imaging plate 2 without passing through the dichroic filter array A. The light reflected immediately or entering the optical path by the external auxiliary mirror 70 also serves to guide the photomultiplier tube 10.

In the present embodiment, the optical members 32a, 32b, 32c transmit the light reflected from the imaging plate 2 upwards while the end dichroic filter of the dichroic filter array A 31f) the first auxiliary dichroic filter 32a reflecting the light received from the lower side upward, the light received from the first auxiliary dichroic filter 32a and the light reflected from the imaging plate 2, the upper side. A second auxiliary dichroic filter 32b which transmits light reflected from the upper end of the dichroic filter array A of the dichroic filter array A, and reflects upward the dichroic filter array A; And an internal mirror 32c reflecting the light received from the first and second auxiliary dichroic filters 32a and 32b into the light inlet 22. Light traveling about 45 degrees toward the light inlet 22 while passing through the first and / or second auxiliary dichroic filters 32a and 32b is not reflected by the inner mirror 32c without causing the coupler 20 to be reflected. Through the light inlet (22) of the direct current into the photomultiplier tube (10). On the other hand, light traveling approximately 60 degrees toward the light inlet 22 is directed to the photomultiplier tube 10 by changing the direction of travel using the inner mirror 32c. The external auxiliary mirror 70 reflects light traveling in a direction away from the light inlet 22 of the coupler 20 among the light reflected from the imaging plate 2 at an angle of 45 to 60 degrees. It serves to guide the light inlet 22 side of 20).

The first and second auxiliary dichroic filters 32a and 32b are disposed on the inclined base 37 at the same 45 degree angle as the dichroic filters 31 in the dichroic filter array A. In addition, the first auxiliary dichroic filter 32a located at the lower side of the two auxiliary dichroic filters 32a and 32b, like the dichroic filters 31 in the dichroic filter array A, has an inclined base. It is preferable to include the omit portion 322 at the side lateral edge away from (37). By employing the omits 322 and / or by making the size of the first auxiliary dichroic filter 32a smaller than the second auxiliary dichroic filter 32b, it is reflected from the imaging plate 2. The amount of light directed to the second auxiliary dichroic filter 32b may be increased in the light without passing through the first auxiliary dichroic filter 32a. In the first and second auxiliary dichroic filters 32a and 32b, the rear surface near the imaging plate 2 is a transmissive surface and the front surface far from the imaging plate 2 is a reflective surface.

The optical collector 1 for CR further includes a light passing plate 50 having a square light passing hole 52 formed between the coupler 20 having the light inlet 22 formed thereon and the second auxiliary dichroic filter 32b. do. The light passing plate 50 is inclined at an acute angle with respect to the plate on which the light inlet 22 of the coupler 20 is formed. Light passing through the first and second auxiliary dichroic filters 32a and 32b and traveling approximately 45 to 60 degrees passes through the light passing hole 52 of the light passing plate 50. The above-described inner mirror 32c does not enter the light inlet 22 in the light traveling through the first and second auxiliary dichroic filters 32a and 32b and proceeds approximately 45 to 60 degrees, for example. And reflects light traveling approximately 60 degrees into the light inlet 22.

In each of the tables of FIGS. 18 and 19, '33' denotes a member number of the tail mirror described above, and '31a', '31b', '31c', '31d', '31e' and '31f' denote dykes described above. Each member number of the roic filter is shown, and '32a' and '32b' represent member numbers of the first auxiliary dichroic filter and the second auxiliary dichroic filter described above. In both examples, it can be seen that the dichroic filters are arrayed so that the transmittance increases along the direction in which light travels.

Claims (25)

There is a light collector for CR which collects the light reflected from the imaging plate when the laser light is incident on the imaging plate, An optoelectronic multiplier positioned biased above the imaging plate; A coupler coupled to the photomultiplier and defining a light inlet through which light enters; And A light transmission unit for transmitting the reflected light from the imaging plate to the light inlet over the entire width of the imaging plate,  The light transmitting unit includes a dichroic filter array defining an optical path in a direction crossing the width of the imaging plate, and an optical member for guiding light passing through a dichroic filter in the dichroic filter array into the light inlet. Optical collector for CR comprising a. The dichroic filter array of claim 1, wherein the dichroic filter array is between a first edge of the imaging plate near the second edge of the imaging plate and a side near the photoelectron multiplier near the photomultiplier. And a plurality of dichroic filters arranged in a direction transverse to the width of the imaging plate, wherein the front face of each of the dichroic filters reflects the light received from the imaging plate to the front side, and the rear face is the rear side. The optical collector for CR, characterized by transmitting the light received from another dichroic filter of the front. 3. The tail mirror of claim 2, wherein the dichroic filter array further comprises a tail mirror positioned closer to the first edge than the first dichroic filter of the plurality of dichroic filters. The optical collector for CR, characterized in that arranged in parallel with the plurality of dichroic filter. The dichroic filter according to claim 2 or 3, wherein the dichroic filters further include an inclined base having a main surface coupled in a row, wherein the main surface of the inclined base is inclined to be opened at an obtuse angle with respect to the imaging plate, and the dichroic The blade filters are arranged on the inclined base inclined so that the upper side is toward the second corner side and the lower side is toward the first corner side. The dichroic filter array of claim 2, wherein the dichroic filter array includes dichroic filters having different transmittances or reflectances, wherein the transmittance of the dichroic filter in front is greater than that of the dichroic filter in the rear. The optical collector for CR characterized by the above-mentioned. The dichroic filter according to claim 2 or 3, wherein each of the dichroic filters has a shape of a light beam narrower than a lower portion of the dichroic filter, and the front surface of the other dichroic filter positioned behind the light from the imaging plate. An optical collector for CR, characterized in that an underside portion (omitted portion) to pass to the upper side is provided at the lower side of one side. The first auxiliary dichroic filter of claim 1, wherein the optical members transmit upwardly the light reflected from the imaging plate while reflecting upwardly the light received from the lower end dichroic filter of the dichroic filter array. And a second auxiliary for transmitting the light received from the first auxiliary dichroic filter and the light reflected from the imaging plate upward and reflecting the light received from the upper end of the dichroic filter of the dichroic filter array. An optical collector for CR, comprising a dichroic filter. 8. The CR light of claim 7, further comprising an internal mirror for reflecting at least some of the light that has passed through the first and second auxiliary dichroic filters and the second auxiliary dichroic filter into the light entrance. Collector. 9. The method of claim 8, wherein light traveling through at least one of the first auxiliary dichroic filter and the second auxiliary dichroic filter toward the light inlet at a first angle is not reflected to the inner mirror and is not reflected by the photoelectron multiplication. Direct light enters a pipe and passes through at least one of the first auxiliary dichroic filter and the second auxiliary dichroic filter at a second angle toward the light inlet so that the light is reflected to the inner mirror to reflect the optoelectronic Optical collector for CR, characterized in that guided to the multiplier. The dichroic filter array of claim 1, wherein the dichroic filter array is located from near the first edge of the imaging plate on the side far from the photomultiplier to near the second edge of the imaging plate on the side near the photomultiplier. A tail mirror and a plurality of dichroic filters arranged in a direction transverse to the width of the imaging plate, each of the dichroic filters reflecting the light received by the front surface from the imaging plate to the front side, and the imaging Further provided is an inclined base having a main surface through which the light received from the plate or another dichroic filter at the rear is forward, and having the dichroic filters arranged in a row, the main surface of the inclined base at an obtuse angle with the imaging plate. An angle to the imaging plate so that it is open The tail mirror and the dichroic filters are disposed on the inclined base such that the tail mirror and the dichroic filters are inclined at an angle so that an upper side thereof faces the second corner side and a lower side thereof faces the first corner side, and the optical members are disposed on the imaging plate. A first auxiliary dichroic filter which transmits the reflected light upwards and reflects light received from the lower end dichroic filter of the dichroic filter array upwards; and light received from the first auxiliary dichroic filter And a second auxiliary dichroic filter transmitting upwardly the light reflected from the imaging plate and reflecting light received from above the terminal dichroic filter of the dichroic filter array upward. A roic filter and the second auxiliary dichroic filter are dichroic in the dichroic filter array. An external auxiliary mirror that is inclined at the same angle as the filters and is disposed on the inclined base, and reflects the light traveling from the light reflected from the imaging plate away from the light inlet of the coupler and guides the light to the light inlet side of the coupler Optical collector for CR, characterized in that it further comprises. In a CR cassette for providing an CR imaging plate to a CR reader, A sliding plate on which the imaging plate is placed; And A cassette shell accommodating the sliding plate therein and having an opening configured at one side thereof to allow entry and exit of the sliding plate; The cassette shell includes a first locking pinhole and a second locking pinhole on both inner sides facing each other, and the sliding plate has a first locking pin and a second recessably mounted on both sides thereof in a lateral direction. And an elastic member for biasing the locking pins and the first locking pins and the second locking pins in the direction in which the first locking pins and the second locking pins are fitted into the first locking pin holes and the second locking pin holes. 12. The sliding plate according to claim 11, wherein the sliding plate comprises: a first access groove and a second access groove formed at a front end side, a first pressing tongue fixed to the first locking pin in the first access groove, and the second access groove. And a second pressing tongue fixed to the first locking pin therein. The first access groove and the second access groove are secured with a space for pressing the first pressure tongue and the second pressure tongue in a direction closer to each other, the first pressure tongue and the second pressure tongue And pressurizing in a direction approaching each other, so that each of the first locking pin and the second locking pin retreats to be separated from the first locking pinhole and the second locking pinhole. The apparatus of claim 12, wherein the sliding plate includes a main plate on which the imaging plate is stacked, and an end portion provided at one end of the main plate to face an opening of the cassette shell, wherein the end portion of the main plate is spaced apart from each other. A central end piece coupled to one end, a first outer end piece, and a second outer end piece, wherein the first access groove is defined between the first outer end piece and the central end piece; Is defined between a second outer end piece and the central end piece, the first locking pin penetrates the first outer end piece laterally with a proximal end positioned in the first access groove, and the second locking pin. Silver proximal through the second outer end piece with the proximal end positioned in the second access groove, the elastic member in the first access groove being one side of the central end piece. And a first locking pin elastically supporting the second locking pin while being supported by the second member, and the elastic member in the second access groove elastically supporting the second locking pin while being supported on the other side of the central end piece. cassette. 12. The CR cassette of claim 11, wherein each of the first pressing tongue and the second pressing tongue has a locking groove formed therein. The CR cassette of claim 11, wherein a dummy groove is formed between the first access groove and the second access groove. A CR cassette including a sliding plate on which an imaging plate is placed, and a cassette shell accommodating the sliding plate therein and having an opening configured to allow entry and exit of the sliding plate; And A CR system comprising a CR reader for acquiring an image from the imaging plate, The cassette shell includes a first locking pinhole and a second locking pinhole on opposite inner sides of the cassette shell, wherein the sliding plate includes a first access groove and a second access groove formed at a front end, the first access groove, and the The amount of the sliding plate fixed to the first pressing tongue and the second pressing tongue in each of the first pressing tongue and the second pressing tongue located in the second access groove; Each of the first locking pin and the second locking pin and the first locking pin and the second locking pin, which are installed to be protruded laterally with respect to each of the side surfaces, respectively, the first locking pin hole and the second locking pin hole, respectively. It includes an elastic member for deflecting in the direction fitted to, The CR reader includes a frame including a bottom plate and a cover, a tray unit provided at one end of the frame, and a finger unit unlocking the cassette shell and the sliding plate when the CR cassette is connected to the tray unit. And a transfer unit for moving the finger unit while the finger unit is holding the sliding plate to set the sliding plate to a predetermined position, wherein the finger unit includes the first pressing tongue and the second pressing tongue. And a finger set that pushes inward to retract the first locking pin and the second locking pin in a direction away from the first locking pinhole and the second locking pinhole.  A first and second CR cassettes each including a sliding plate on which an imaging plate is placed, and a cassette shell formed at one side to receive the sliding plate therein and to allow opening and closing of the sliding plate; And 10. A CR system comprising a CR reader for acquiring an image from an imaging plate provided through one of the first and second CR cassettes. The cassette shell of each of the first and second CR cassettes includes a first locking pinhole and a second locking pinhole on both inner sides facing each other, and the sliding plate of each of the first and second CR cassettes is formed at a front end thereof. A first access groove and a second access groove, a first pressing tongue and a second pressing tongue positioned in the first access groove and the second access groove, and in each of the first access groove and the second access groove; A first locking pin and a second locking pin fixed to the first pressing tongue and the second pressing tongue and installed to be protruded laterally with respect to each of both sides of the sliding plate; and the first locking pin and the An elastic member biasing each of the second locking pins in a direction to be fitted into each of the first locking pin holes and the second locking pin holes, The CR reader includes a frame including a bottom plate and a cover, a tray unit provided at one end of the frame, and the cassette shell and the sliding plate when the first CR cassette or the second CR cassette is connected to the tray unit. A finger unit for unlocking therebetween, and a transfer unit for setting the sliding plate to a predetermined position by moving the finger unit while the finger unit holds the sliding plate, wherein the finger unit includes the first CR. Pressing the first pressing tongue and the second pressing tongue provided on the sliding plate of the cassette inward, the first locking pin and the second locking pin provided on the sliding plate of the first CR cassette are placed on the cassette shell of the first CR cassette. A first finger set for retracting from the first locking pinhole and the second locking pinhole, and a first pressing provided on the sliding plate of the second CR cassette; The first locking pin and the second locking pin provided on the sliding plate of the second CR cassette by pressing the tongue and the second pressing tongue inward to the first locking pin hole and the second locking provided on the cassette shell of the second CR cassette. And a second set of fingers for retracting in a direction away from the pinhole. 18. The method according to claim 17, wherein the first finger and the second finger, when the first CR cassette is connected to the tray unit, constitute the first finger set to press the first locking pin and the second locking pin. The first finger and the third finger, when the second CR cassette is connected to the tray unit, constitute the second finger set to press the first locking pin and the third locking pin, The CR system, characterized in that the second finger and the third finger are integrally separated from each other and movable together. 19. The method of claim 18, wherein the finger unit, the first finger, the second finger and the third finger so as to open or pinch between the first finger and the second finger and the first finger and the third finger. And a finger transfer mechanism configured to move the finger transfer mechanism, wherein the finger transfer mechanism includes a forward threaded portion in which the first finger is screwed, and a reverse threaded portion in which the second finger and the third finger are screwed; And a base block having a guide part configured to linearly slide the first finger, the second finger, and the third finger in a lateral direction. 19. The sliding plate of claim 1, wherein the sliding plate of the first CR cassette further includes a dummy groove between the first access groove and the second access groove, and when the first CR cassette is connected to the tray unit. A finger acting with the first pushing tongue in the first access groove and the second finger acting with the second pushing tongue in the second access groove, the third finger being located within the dummy groove. CR system characterized by. The longitudinal conveyance screw according to any one of claims 16 to 20, wherein the conveying unit is installed in the longitudinal direction on the bottom plate and has a longitudinal LM guide in which the finger unit is slidably coupled thereto, and a longitudinal conveying screw to which the finger unit is coupled. And a screw drive unit which rotates the longitudinal feed screw in a forward or reverse direction to move the finger unit back and forth along the LM guide. 21. The CR reader according to any one of claims 16 to 20, wherein the CR reader further comprises a shell fixing unit for fixing the cassette shell in the vicinity of the tray unit, wherein the shell fixing unit is configured to apply an elastic deflection force in an upward direction by a spring. And a shell fixing pin which is inserted into the bottom pin hole of the cassette shell, wherein the shell fixing pin is pressed by the cassette shell when the cassette shell enters and descends, and then fits into the bottom pin hole so that the cam inclined surface is fitted at the end. CR system comprising a. 23. The CR system as set forth in claim 22, wherein the shell fixing unit includes a pin lowering driver for lowering in cooperation with the base block of the finger unit for advancing the shell fixing pin inserted into the bottom pin hole. 21. The CR system according to any one of claims 16 to 20, further comprising a plurality of horizontal supports supporting the sliding plate at a plurality of points near the tray inlet of the tray unit. 21. The apparatus of any one of claims 17 to 20, wherein the tray unit includes a tray and a first tray cover and a second tray cover rotatably installed inside an inlet of the tray by a hinge means. When the cassette enters the tray inlet, both the first tray cover and the second tray cover are pushed open by the first CR cassette, and when the second CR cassette enters the tray inlet, the first Only a tray cover is pushed open by the second CR cassette.

Images