KR20090020752A - An apparatus for generating the bucky centering light of diagnostic x-ray using led light - Google Patents

Abstract

An apparatus for generating an irradiation center indicating light of a diagnostic X-ray is provided to generate the irradiation center indicating light having uniform width and brightness by imaging a light generated in an LED(Light Emitting Diode) lighting device and transmitting the imaged light through a mixed lens unit. An LED lighting unit(10) generates an illumination light. An imaging unit(20) makes an image of the light irradiated from the LED lighting unit in a type of an irradiation center indicating light. A mixed lens unit(30) expands the light imaged in the imaging unit into a required size and projects the light to a subject. An outer case(40) is coupled to the mixed lens unit at its bottom. A cover(50) seals the outer case closely.

Description

An apparatus for generating the bucky centering light of diagnostic x-ray using LED light}

The present invention relates to an X-ray irradiation center display light generating device mounted on the collimator of the diagnostic X-ray imaging apparatus, and more particularly, using a LED light as a light source, and the light generated in the LED light by the image forming unit to combine the lens As it transmits through the unit, it generates the irradiation center display light with uniform width and brightness and low loss, which satisfies the safety standard, improves the life of the product, miniaturization and modularization, and provides excellent compatibility. The present invention relates to an X-ray irradiation center display light generating device capable of generating high quality irradiation center display light.

Recently, thanks to the development of science and medical technology, the field of diagnostic equipment using radiation has grown rapidly. In particular, the diagnostic X-ray imaging apparatus using X-ray has been widely distributed to general hospitals / clinics. It is making a great contribution to taking effective pictures.

Such a diagnostic X-ray imaging apparatus, as shown in FIG. 1, generally makes an X-ray tube (X-ray tube) 1 generating X-rays and X-rays generated from the X-ray tube 1 into parallel uniform beams. A collimator 2, a table 4 for supporting a patient to be photographed and fixed to a photographing position, and mounted on the lower part of the table 4 to detect and store X-rays passing through the patient's diagnosis area as an image. It consists of a bucky-tray (5). Here, the bucky tray 5 is provided with an X-ray film cassette equipped with a grid for detecting X-rays and a film. In the case of a digital photographing apparatus, a digital radiation image detector (DR-Detector) is installed instead of the film.

Such diagnostic X-ray imaging apparatus may obtain an accurate image for diagnosis only when the center of the X-ray radiated from the collimator 2 and the center point of the bucky tray 5 located at the portion irradiated with the radiation X-ray coincide with each other.

Therefore, irradiation generating an X-ray irradiation centering light 7 (hereinafter referred to as an irradiation centering light) capable of visually determining whether the irradiation center of X-rays and the center of the bucky tray 5 coincide with each other. The center display light generator 3 is attached to or embedded in the collimator 2 or the structure surrounding the collimator 2 to irradiate the center of illumination light 7 onto the upper surface of the table 7 so that the two centers coincide with each other. If not, the table 7 is moved left and right to align and correct the difference between the centers.

Conventional irradiation center display light generating apparatuses mostly use laser or halogen lighting as display light.

First, the device using the laser beam as the display light has the advantage that it is excellent in linearity and easy to focus the light to obtain a high quality display light beam has been applied to most diagnostic X-ray imaging apparatus. However, when the laser beam is irradiated to the eyes of the equipment operator or the user, there is a risk of damage to the eyes, etc. There is a problem that takes time. In some countries, the use of lasers is strictly limited.

On the other hand, a device using a halogen light as a display light is typically made by using a halogen lighting device provided for field-scale lighting in the collimator of the diagnostic X-ray imaging apparatus, the high brightness lighting without the risk of physical damage such as laser There is an advantage that can generate light rays. However, there is a problem that the heat generation is so severe that the image forming part 20 cannot be brought close to the halogen lamp and the size is increased to secure sufficient heat dissipation space. In addition, although it is configured to pass the projection light of the halogen light through a narrow light transmission window (slit) to make a fine beam, there is a limit that it is difficult to obtain a high quality display light because the halogen light is close to the natural light, so the focusing is difficult. In addition, there is a problem that high power consumption is required to drive the halogen lamp. Therefore, halogen lighting can solve some of the difficult use restriction problems in the case of using a laser beam, but it has a problem of causing inconvenience in use and degrading the quality of the display light beam.

The present invention is to solve the problems of the above-described conventional irradiation center display light generating apparatus. That is, the object of the present invention, by using the LED light as a light source, compared to the case of using a conventional laser and halogen lighting, it is possible to improve the safety, improve the heat problem, operation by low power, and at the same time product life Is in extending the.

In addition, the present invention by imaging the light generated in the LED illumination by the image forming unit and transmitted through the lens combination, thereby generating a radiation-centered display light having a uniform width and brightness and low loss, fine and clear high-quality irradiation center The purpose is to realize the quality of the display light.

It is also an object of the present invention to increase the compatibility so that the device can be easily applied without changing the structure or mounting design, regardless of the type, structure, and shape of collimators generally distributed in the module.

In addition, the present invention is to easily design the focal length of the lens, the position and angle of the irradiation center display light after mounting or mounting the irradiation center display light generating device to facilitate the calibration operation of the irradiation center display light. There is a purpose.

The present invention as a technical idea for achieving the above object, LED lighting unit for generating an illumination light; An imaging unit provided below the LED lighting unit to form light emitted from the LED lighting unit in the form of irradiation center display light; A lens combination unit provided under the image forming unit to enlarge the light formed at the image forming unit to a required size and project the light to a subject; An exterior case in which the LED lighting unit and the imaging unit are built-in, and in which a lens combination unit is coupled; The cover is coupled to the top of the outer case to seal the outer case; provides a diagnostic X-ray irradiation center display light generating device using the LED light, characterized in that it comprises a.

Irradiation center display light generating device according to the present invention by using the light generated from the LED light to generate a radiation-centered display light with a uniform width and brightness, low loss, can operate at low power and improve the life of the device It is possible to reduce the maintenance cost of the product, and it is easy to satisfy various legal requirements due to low heat generation and safe use and handling, and it is effective to be widely applied to various kinds of collimators by implementing miniaturization and modularization.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional front view of the diagnostic X-ray irradiation center display light generating apparatus according to an embodiment of the present invention, Figure 3 is an exploded perspective view of the diagnostic X-ray irradiation center display light generating apparatus shown in Figure 2, Figure 4 is An exploded perspective view of the lens combination shown in FIG.

As shown in Figure 2 and 3, the diagnostic X-ray irradiation center display light generating apparatus according to an embodiment of the present invention is provided under the LED lighting unit 10, the LED lighting unit 10 and the LED lighting unit 10 An imaging unit 20 for imaging the light irradiated from the imaging unit 20 in the form of an irradiation center display light, and an image formed at the lower portion of the imaging unit 20 to enlarge the light formed at the imaging unit 20 to a required size. It comprises a lens combination (lube) 30 to project to. In addition, a built-in LED lighting unit 10 and the image forming unit 20, the outer case 40 is coupled to the upper end of the outer case 40, the outer case 40 is coupled to the lens combination unit 30, the outer case 40 The cover 50 is provided to seal the.

The LED lighting unit 10 is a high-brightness LED lamp used for lighting, and may be selectively configured to have an appropriate illuminance according to the brightness demand for the irradiation center display light of the customer. LED lamps are used. Looking at the detailed configuration of the LED lamp, an LED element (not shown) is mounted on a metal-printed circuit board 11 having excellent heat dissipation effect, and a transparent LED lens 12 is molded to surround the LED element. . In addition, a wire 14 for applying electricity to the LED element is connected to the metal PCB 11. Here, the metal PCB 11 is a printed circuit board to improve the heat dissipation performance by attaching a flexible PCB (11b) consisting of a synthetic resin film on the heat dissipating element (11a) of a high thermal conductivity metal component through an adhesive.

As described above, the present invention uses LED light, which has excellent heat dissipation performance and has a compact size, as a light source, thereby eliminating the problem of limitation in use as a device using a conventional laser beam, and without generating heat as in a halogen light. Low power operation can be enabled. In addition, LED lighting ensures a much longer life than laser and halogen lighting, reducing the cost and time lost of replacing light sources.

The image forming unit 20 performs a function of irradiating the light irradiated from the LED lighting unit 10 to the lens combination unit 30 by forming an image in the form of irradiation center display light, that is, a fine beam. 21) a film or a metal thin film is used. In this case, when the film is used, the slit 21 is developed and produced by X-ray exposure on the X-ray exposure microfilm, and when the metal thin film is used, the slit 21 is formed by photo etching. Will be produced in such a way. In the present embodiment, the width of the slit 21 of the film or the metal thin film is 0.05 mm or less so that the light generated from the LED lighting unit 10 passes through the slit 21 and is formed into a beam having a fine width.

The outer case 40 is formed of a hollow cylinder to position the LED lighting unit 10 and the image forming unit 20 therein, a sleeve 41 for supporting the image forming unit 20 is formed on the inner diameter surface, the inner diameter surface An upper screw 46 and a lower screw 47 for fastening with the cover 50 and the lens combination 30 are formed at the upper end and the lower end of the outer diameter surface, respectively.

Between the LED lighting unit 10 and the imaging unit 20 embedded in the outer case 40 is provided with an LED support unit 60 of the hollow tube, so that the LED lighting unit 10 and the imaging unit 20 to maintain a proper distance The LED lighting unit 10 will be supported.

The cover 50 has a cylindrical protrusion 51 contacting the upper surface of the metal PCB 11 of the LED lighting unit 10 at the bottom thereof, and a screw 53 is formed along the outer diameter surface thereof, so that the outer case 40 As the cylindrical protrusion 51 is pressed against the LED lighting unit 10 downward while being fastened to the upper screw 46 of the LED lighting unit 10, the LED supporting unit 60, and the image forming unit 20, the external case ( 40) can be fixed stably. Moreover, the screw hole 52 for fastening a bolt to an attachment position is formed in the upper surface of the cover 50. As shown in FIG.

Here, referring to the method of assembling the imaging unit 20 and the LED lighting unit 10 in the exterior case 40, first, the imaging unit 20 through the upper opening of the exterior case 40 until contact with the sleeve 41. ) And insert the LED support 60 for supporting the LED lighting unit 10 into the outer case 40 so as to be at the top of the imaging unit 20, and then the LED lighting unit to be seated on the LED support unit 60. 10 is inserted into the outer case 40. Finally, the cover 50 is fastened to the upper screw 46 of the outer case 40, thereby stably fixing the image forming unit 20, the LED support unit 60, and the LED lighting unit 10 in the outer case 40. do.

Meanwhile, the lens combination unit 30 is fastened to the lower screw 47 of the outer case 40 to enlarge the light formed in the image forming unit 20 to the required size and project the light to the subject. As shown in FIG. 4, the hollow case cylindrical lens case 31, a convex type lens 32, a spacer 33, and a collimator sequentially inserted downward in the lens case 31. It consists of a lens (collimator type lens) 34, and the lens cover 35 of the hollow cylinder type that is finally inserted into the lens case 31 and fastened.

The collimator lens 34 forms a focus so that the pattern of the light rays formed through the image forming unit 20 is not distorted and focuses to a uniform beam, and the convex lens 32 is positioned below the collimator lens 34. The beam irradiated through the collimator lens 34 is enlarged to a necessary magnification and serves to project it onto a subject.

As described above, the combination of the lenses provided in the lens combination unit 30 has a uniform width and brightness without being distorted in the process of irradiating a beam formed through the imaging unit 20 to the subject, and has an appropriate width and length. It consists of at least two lenses so as to be irradiated to the subject in the form of display light, it may be configured by adding another lens if necessary.

A screw 35a is formed at the lower end of the outer diameter surface of the lens cover 35, and the screw 35a of the lens cover 35 and the lower screw 47 of the outer case 40 are formed on the inner diameter surface of the lens case 31. The focus adjusting screw 31a is fastened. Therefore, the convex lens 32, the spacer 33, and the collimator lens 34 are inserted into the lens case 31, and the lens cover 35 is completely fastened to complete the assembly of the lens combination unit 30. When the lens case 31 is rotated so that the lower screw 47 of the outer case 40 is fastened to the focus adjusting screw 31a of the case 31, the imaging unit 20 is rotated according to the degree of rotation of the lens case 31. ) And the distance between the collimator lens 34 and the focal length of the lens combination unit 30 can be finely adjusted.

As described above, since the irradiation center display light generating apparatus according to the present invention has an independent modular structure, it can be mounted and used in various kinds of diagnostic X-ray photographing apparatus. Hereinafter, the irradiation center display light according to the present invention will be used. The mounting means for attaching the generator to the collimator or to the structure around the collimator will be described.

FIG. 5 is a view showing a state in which the irradiation center display light generating device shown in FIG. 2 is mounted on the side of the collimator, and the irradiation center display light generating device is mounted at a required position using the mounting bracket 70, and It shows a structure that can easily adjust the direction and position of the irradiation center of the display light.

As shown in Figure 5, the mounting bracket 70 according to an embodiment of the present invention and the mounting plate 71 is formed in close contact with the mounting surface at least two or more through holes (71a) for fastening the bolt and The support plate 72 is connected to the attachment plate 71 to form an obtuse angle, and a long hole 72a is formed at the center thereof. Here, the long hole 72a of the support plate 72 is an elliptical through-hole formed so that the long axis direction is parallel to the attachment plate 71 for fastening the bolt with the cover 50 of the irradiation center display light generating device.

Looking at the method for mounting the irradiation center display light generating apparatus according to the invention on the side wall of the collimator or the structure around the collimator using the mounting bracket 70 configured as described above, first, the attachment plate 71 of the mounting bracket 70 is collimator Alternatively, the mounting bracket 70 is attached to the collimator or the side wall of the collimator peripheral structure by closely contacting the side wall of the collimator surrounding structure and inserting and tightening a bolt through the through hole of the attachment plate 71.

Thereafter, the cover 50 of the irradiation center display light generating device is brought into close contact with the bottom surface of the support plate 72 of the mounting bracket 70, and one bolt is screwed through the long hole 72a of the support plate 72. The irradiation center display light generating device is fixed to the mounting bracket 70 by being inserted into and fastened to the hole 52. At this time, since the bolt can be freely moved and fastened in the long axis direction of the long hole 72a formed in the support plate 72, the position of the irradiation center display light generating device is moved by the position of the bolt along the long axis direction of the long hole 72a. By adjusting, the position at which the irradiation center display light is irradiated to the subject can be adjusted. In addition, since the irradiation center display light generating device can be fastened at a predetermined angle with respect to the bolt axis when the bolt is fastened, the irradiation is irradiated to the subject by adjusting the rotation angle of the irradiation center display light generating device about the bolt axis. The angle of the center display light can be freely adjusted.

Further, even after the irradiation center display light generating device is mounted, the bolt is moved in the long axis direction of the long hole 72a in a state in which the bolt fastened to the cover 50 is released through the long hole 72a of the support plate 72. At the same time, by rotating the irradiation center display light generating device about the bolt axis, the position and angle of the irradiation center display light irradiated to the subject can be freely adjusted.

Hereinafter, an operation process of irradiating the irradiation center display light through the irradiation center display light generating apparatus of the present invention described above will be described in detail.

6 is a view showing an operation process of the irradiation center display light generating device shown in Figure 2, Figure 6 (a) is a view showing the operating state of the irradiation center display light generating device from the front, b) is a side view showing the operating state of the irradiation center display light generating device.

First, a high-brightness illumination light generated by the LED lighting unit passes through the image forming unit 20 where the slit 21 is formed, thereby generating an image of a clear display light having a fine width.

Subsequently, as the image of the display light passes through the collimator lens 34 of the lens combination unit 30, a uniform focus image from which distortion is removed is formed, and the focus image passes through the convex lens 32 to diagnose a subject, that is, a diagnosis. When irradiated on the table of the X-ray imaging apparatus, the final irradiation center indication light enlarged to the required size appears on the surface of the subject.

As such, the center of the X-rays radiated from the collimator and the center of the bucky tray may be aligned based on the irradiation center display light irradiated onto the surface of the subject.

As described above, the present invention uses the LED light as a light source, and the light generated in the LED light is first formed by the image forming unit 20 and transmitted through the lens combination unit 30, thereby providing a uniform width and brightness. By generating irradiation center display light with low loss, it is possible to generate a high quality irradiation center display light at a lower power than halogen lighting, while greatly reducing the risk of laser lighting. LED lighting, an image forming unit 20 and a lens Referring to the advantages obtained through the configuration of the present invention made of a combination unit 30 in more detail as follows.

1) low power

By using LED light with high light efficiency as a light source, power of 1 ~ 3 watts is generally used. When halogen light is used as a light source, light efficiency is relatively low and light is simply generated through a light transmission window. Because of the large distortion and loss of the power, at least 100 to 150 watts of power is required to obtain a sufficient brightness of the center of illumination light.

2) low fever

Since LED lighting generates less heat than halogen lights, the heat dissipation structure can be configured in a compact size, and no light leakage blocking structure is required, so it is possible to concentrate the light closer to the area to be irradiated to lose light. It can reduce the size and make it a miniaturized sealed structure.

3) Improved product life

The lifetime of the LED lamps is generally guaranteed over 50,000 hours, allowing for much longer time than halogen lamps and laser lighting.

4) safety

LED light is safer to handle than laser light, and there are no restrictions on use, design, and manufacturing. In addition, since the heat generation is less than the halogen lamp and the lens portion is molded, the heat generation is severe and the risk of overheating is high, and the lens portion can be safely handled compared to the halogen lamp made of glass.

5) modularization

It can be applied to various types of collimators because it has a small modular structure that can be externally attached to the collimator of the diagnostic X-ray photographing apparatus.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

1 is a view showing the structure of a general diagnostic X-ray imaging apparatus.

Figure 2 is a front sectional view of the diagnostic X-ray irradiation center display light generating device according to an embodiment of the present invention.

Figure 3 is an exploded perspective view of the diagnostic X-ray irradiation center display light generating device shown in FIG.

Figure 4 is an exploded perspective view of the lens combination shown in FIG.

FIG. 5 is a view showing a state in which the irradiation center display light generating device shown in FIG. 2 is mounted on the side of the collimator. FIG.

6 is a view showing an operation process of the irradiation center display light generating device shown in FIG.

<Explanation of symbols for the main parts of the drawings>

1: X-ray tube 2: collimator

3: irradiation center display light generator 4: table

5: Bucky Tray 10: LED lighting unit

11: metal PCB 12: lens

20: imaging part 21: slit

30: lens combination 31: lens case

31a, 35a, 53, 46, 47: screw 32: convex lens

33: spacer 34: collimator lens

35 lens cover 40 outer case

41: sleeve 50: cover

60: LED support 70: mounting bracket

71: attachment plate 72: support plate

72a: long

Claims (7)

In the X-ray irradiation center display light generating device mounted on the collimator of the diagnostic X-ray imaging apparatus, LED lighting unit 10 for generating an illumination light; An imaging unit 20 provided below the LED lighting unit 10 to form light irradiated from the LED lighting unit 10 in the form of irradiation center display light; A lens combination unit 30 provided below the image forming unit 20 to enlarge the light formed in the image forming unit 20 to a required size and project the light to a subject; An exterior case 40 having the LED lighting unit 10 and the imaging unit 20 therein and having the lens combination unit 30 coupled to a lower end thereof; A cover 50 coupled to an upper end of the outer case 40 to seal the outer case 40; Diagnostic X-ray irradiation center display light generating device using an LED light, characterized in that comprises a. The method of claim 1, The LED lighting unit 10, A metal-printed circuit board 11; An LED element mounted on the metal PCB 11; A transparent lens molded to surround the LED element; Diagnostic X-ray irradiation center display light generating device using an LED light, characterized in that comprises a. The method of claim 1, The imaging unit 20, Diagnosis X-ray irradiation center display light generating device using the LED light, characterized in that consisting of an X-ray exposure microfilm in which a slit developed by the X-ray exposure is formed. The method of claim 1, The imaging unit 20, Diagnosis X-ray irradiation center display light generating device using the LED light, characterized in that consisting of a metal thin film is formed with a slit by a photo etching method. The method of claim 1, The lens combination unit 30, A lens case 31 of a hollow park cylindrical shape; A convex lens 32, a spacer 33, and a collimator lens 34 sequentially inserted in the lens case 31 in a downward direction; A lens cap 35 of a hollow cylinder shape which is finally inserted into and coupled to the lens case 31; Diagnostic X-ray irradiation center display light generating device using an LED light, characterized in that comprises a. The method of claim 5, The outer case 40, A lower screw 47 for fastening with the lens combination unit 30 is formed at the lower end of the outer diameter surface. The lens case 31, A focus adjusting screw 31a to which the lower screw 47 of the outer case 40 is fastened to an inner diameter surface is formed, By adjusting the focus adjusting screw 31a and the lower screw 47 of the outer case 40 to rotate the lens case 31, the distance between the imaging unit 20 and the collimator lens 34 is adjusted. Diagnostic X-ray irradiation center display light generating device using an LED light characterized in that it can be. The method of claim 1, The diagnostic X-ray irradiation center display light generating device, The screw hole 52 is formed in the upper surface of the cover 50, At least two through holes for fastening the bolts are formed to be attached in close contact with the mounting surface 71 and the attachment plate 71 is formed in an obtuse angle and the long hole (72a) of the oval in the center Further provided with a mounting bracket 70 consisting of a support plate 72 is formed, A bolt is inserted into and fastened to the screw hole 52 of the cover 50 through the long hole 72a of the support plate 72 to fix the irradiation center display light generating device to the mounting bracket 70. Diagnosis X-ray irradiation center display light generator using LED lighting.

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