KR20080094421A - Three-dimensional x-ray inspecting appratus having two x-ray detecting sensors - Google Patents

Abstract

A three-dimensional X-ray inspecting apparatus having two X-ray detecting sensors is provided to give visual activity and reality to an observer by coupling a three-dimensional image output device to an x-ray image device. A three-dimensional X-ray inspecting apparatus having two X-ray detecting sensors includes an X-ray illumination unit(100) for illuminating X-ray to an object, a sensor unit(200), a signal processing unit(300), and a three-dimensional image display unit(400). The sensor unit is formed a pair together with the X-ray illumination unit to generate a left eye image signal and a right eye image signal by receiving the X-ray transmitted through the object. The signal processing unit converting the left eye image signal and the right eye image signal. The three-dimensional image display unit makes the three-dimensional image by receiving the left eye image data and the right eye image data from the signal processing unit. The three-dimensional image display unit has a first display device(410), a second display device(420), a half mirror(430), and an image inversion circuit(440). The image inversion circuit inverts the image of the display device to supply an image reflected by the half mirror in left and right.

Description

THREE-DIMENSIONAL X-RAY INSPECTING APPRATUS HAVING TWO X-RAY DETECTING SENSORS}

1 is a view showing a stereoscopic X-ray imaging apparatus having two X-ray sensor units according to an embodiment of the present invention;

2 is a view showing a stereoscopic X-ray imaging apparatus having two X-ray sensors according to another embodiment of the present invention;

FIG. 2A is a view illustrating a manufacturing process of a fourth display apparatus of a stereoscopic X-ray imaging apparatus including two X-ray sensors according to another exemplary embodiment of the present invention.

In the drawings according to the present invention, the same reference numerals are used for components having substantially the same configuration and function.

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

100: X-ray light emitting unit 200: X-ray sensor unit

300: signal processing unit 400: three-dimensional image display unit

410: first display device 420: second display device

430: half mirror 440: video inversion circuit

500: polarized glasses 610: third display device

620: fourth display device 630: half mirror

The present invention relates to a stereoscopic X-ray imaging apparatus having two X-ray sensor units, and more particularly, to obtain a left eye image and a right eye image of a subject using two X-ray sensor units provided at different positions. In addition, the present invention relates to a stereoscopic X-ray imaging apparatus including two X-ray sensors that display a three-dimensional stereoscopic image through a polarization type stereoscopic image display.

X-rays are short-wavelength electromagnetic waves generated by colliding electron beams that protrude from the cathode at high speed into heavy metals in vacuum discharge. They are not only highly transparent to the object but also have a fluorescent effect.

Therefore, invisible X-rays can be converted into visible light and photographed on a photographic film. Also, a part of the X-rays transmitted to the subject is absorbed and weakened by the subject, thereby changing the density or thickness of the subject. I can photograph it. X-ray inspection is a method of observing the inside of an object using these characteristics.

In addition, X-ray examinations can be classified into medical and industrial applications. Medical uses include chest X-rays, ultrasound (ultrasonograpy), computed tomography (CT), and magnetic resonance imaging (MRI). There are non-destructive inspections such as internal inspection of circuit elements and mechanical equipment, and leakage detection.

On the other hand, the three-dimensional image output device is largely divided into a glasses method and a glasses-free method, and the glasses-free method is a method of dividing the left and right images in the space according to the position of the observer's eyes in the lenticular and barrier method. It is a representative example.

This glasses-free method is convenient because it does not wear glasses, but when the observer moves from side to side and back and forth, the stereoscopic image is cut off and the resolution is inevitably caused by outputting synthesized left and right images using a single display. There are disadvantages. In addition, the glasses method has the disadvantage of having to wear polarized glasses to the optical filter dynamics, but there is an advantage that compared to the non-glasses in terms of viewing angle or resolution.

In the conventional X-ray imaging apparatus, only a two-dimensional image may be observed using a film or an image sensor, and thus there is a problem in that the liveness or reality is lowered when the X-ray image is used for medical or industrial purposes.

The present invention was devised to solve the above problems, and an object of the present invention is to combine a stereoscopic image output device with an X-ray imaging device so that an observer can visually feel the liveness and reality of the X-ray image as if they were watching the real object. The present invention provides a stereoscopic x-ray imaging apparatus.

A stereoscopic X-ray imaging apparatus including two X-ray sensor units according to an embodiment of the present invention for achieving the above object includes two X-ray light emitting units for irradiating X-rays to a subject, the X-ray light emitting unit and Two X-ray sensor units that are paired one-to-one and receive X-rays transmitted through the subject to generate a left eye image signal and a right eye image signal, and a signal for receiving the image signals and converting them into left eye image data and right eye image data And a stereoscopic image display unit configured to receive a left eye image data and a right eye image data from a processor and the signal processor to create a stereoscopic image. The stereoscopic image display unit includes a first display device having a polarization filter having a polarization angle of 45 degrees on the front of the display panel. A polarization filter having a polarization angle of 45 degrees on the front of the display panel is installed at an angle of 90 degrees with the first display device. A half mirror installed between the first display device and the second display device so as to form an angle of 45 degrees with the attached second display device, the first display device and the second display device, and the half mirror among the display devices. And an image inversion circuit for inverting the image of the display device providing the reflected image from side to side.

In a preferred embodiment, the first display device and the second display device have a polarization filter having a polarization angle of 135 degrees on the front of the display panel.

In a preferred embodiment, the display devices are comprised of LCD panels.

In a preferred embodiment, the display panels are made of a PDP panel or an OLED panel.

In accordance with another aspect of the present invention, a stereoscopic X-ray imaging apparatus including two X-ray sensor units includes two X-ray light emitting units for irradiating X-rays to a subject, the X-ray light emitting unit and Two X-ray sensor units that are paired one-to-one and receive X-rays transmitted through the subject to generate a left eye image signal and a right eye image signal, and a signal for receiving the image signals and converting them into left eye image data and right eye image data And a stereoscopic image display unit for receiving a left eye image data and a right eye image data from a processor and the signal processor to create a stereoscopic image. The stereoscopic image display unit includes two LCDs each having two polarization filters having a polarization angle difference of 90 degrees attached to the front and rear surfaces thereof. A third display device comprising a panel and a backlight for supplying illumination to the LCD panel, in the third display device And a fourth display device and the third display device, wherein the backlight is rotated 180 degrees while maintaining the upper and lower portions of the LCD panel so that the backlight is positioned in the front direction of the LCD panel. And a half mirror disposed between the third display device and the fourth display device to form an angle of 45 degrees with the third display device and the fourth display device.

In a preferred embodiment, the LCD panel of the third display apparatus has a polarization filter having a polarization angle of 45 degrees on its front surface and a polarization filter having a polarization angle of 135 degrees on its rear surface.

In a preferred embodiment, the LCD panel of the third display apparatus has a polarization filter having a polarization angle of 135 degrees on its front surface and a polarization filter having a polarization angle of 45 degrees on its rear surface.

In a preferred embodiment, the LCD panel of the third display apparatus has a polarization filter having a polarization angle of 90 degrees on its front surface and a polarization filter having a polarization angle of 0 degrees on its rear surface.

In a preferred embodiment, the LCD panel of the third display apparatus has a polarization filter having a polarization angle of 0 degrees on its front surface and a polarization filter having a polarization angle of 90 degrees on its rear surface.

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

1 is a view showing a stereoscopic X-ray imaging apparatus having two X-ray sensor units according to an embodiment of the present invention.

Referring to FIG. 1, a stereoscopic X-ray imaging apparatus including two X-ray sensor units according to an exemplary embodiment of the present invention includes an X-ray light emitting unit 100, an X-ray sensor unit 200, a signal processing unit 300, and a stereoscopic image. The image display unit 400 is included.

The X-ray emitter 100 is provided with two X-ray emitters 100a and 100b and is provided toward the subject 10. In addition, there is provided a light source (not shown) and a slit (not shown) for adjusting the width of the X-rays generated by the light source. Therefore, X-rays are irradiated to the subject 10.

The X-ray sensor unit 200 is provided with two X-ray sensor units 200a and 200b in one-to-one correspondence with the two X-ray light emitting units 100a and 100b. In an embodiment of the present invention, the two X-ray sensor units 200a and 200b may cross the optical axes of the X-rays irradiated from the two X-ray light emitting units 100a and 100b to each other at the center of the object 10. The X-shaped shapes correspond to the two X-ray light emitting parts 100a and 100b, respectively.

However, the two X-ray sensor units 200a and 200b may be positioned to correspond to the two X-ray light emitting units 100a and 100b in the shape of 11 characters in parallel without the optical axes of the X-rays crossing each other.

In addition, the X-ray sensor unit 200 receives the light passing through the object 10 and generates a constant image signal according to the amount of X-ray light passing through the object 10. In addition, the sensor unit 200 includes a charge-coupled device (CCD). However, the sensor unit 200 may include a complementary metal-oxide semiconductor (CMOS), a storage phosphor image plate, a photodiode, a photoconductor (a-Se, a-Si, etc.). ) Or TFT (Thin Film Transistor).

In addition, any one of the two X-ray sensor unit (200a, 200b) of the X-ray sensor unit 200a generates a left eye image signal to transmit to the signal processing unit 300 and the other X-ray sensor unit (200b) Generates a right eye image signal and transmits it to the signal processor 300.

The signal processor 300 includes a control device (not shown) and a graphic board (not shown) therein. In addition, the control device (not shown) recognizes a left eye image signal and a right eye image signal generated by the X-ray sensor unit 200, respectively, and the graphic board (not shown) reads the image signals from a display device. It converts into left eye image data and right eye image data which can be included.

The stereoscopic image display unit 400 includes a first display apparatus 410, a second display apparatus 420, a half mirror 430, and an image inversion circuit 440.

The display devices 410 and 420 are formed of LCD panels 410 and 420 which are manufactured by attaching polarization filters 412 and 422 having the same polarization angle to 45 degrees on the front of the LCD liquid crystal panels 411 and 421. However, the LCD liquid crystal panels 411 and 421 may be formed of plasma display panel (PDP) panels or organic light emitting diodes (OLED) panels.

In general, since the polarizing filter is attached to the front panel of the LCD panel, there is no need to reattach the polarizing filter. However, since the polarizing plate is not attached to the PDP panel or the OLED panel, the polarizing plate should be attached to the front side.

In addition, the display devices 410 and 420 may be manufactured by attaching a polarization filter having a polarization angle of 135 degrees to the front of the display panels 411 and 421.

In addition, the first display device 410 and the second display device 420 may be manufactured by attaching a polarization filter having a front polarization angle of 90 degrees-0 degrees or 0 degrees-90 degrees, respectively.

As a result, when the left eye image and the right eye image are transmitted or reflected on the half mirror 430, the polarization angles of the left eye image and the right eye image formed on the half mirror 430 are 90 degrees. Suffice.

However, even though the polarization angles of the left eye image and the right eye image formed on the half mirror 430 are not necessarily 90 degrees, the left eye image and the right eye image having different polarization angles are formed on the half mirror 430 to separate the polarization angles. If the polarizing glasses 500 are visible, the viewer can observe the stereoscopic image.

The first display apparatus 410 receives left eye image data from the signal processor 300 and displays a left eye image.

The second display apparatus 420 receives the right eye image data from the signal processor 300 to display the right eye image, and the front lower end forms an edge with the front lower end of the first display apparatus 410 at a predetermined angle. . Preferably it is installed at 90 degrees. However, the predetermined angle may be changed according to the refractive index and the reflectance of the half mirror 430 provided between the display devices 410 and 420.

However, the right eye image may be displayed on the first display apparatus 410 and the left eye image may be displayed on the second display apparatus 420.

Therefore, the observer can observe the stereoscopic image by wearing only the left eye image in the left eye and the right eye image in the right eye by wearing polarization glasses 500 having different lens polarization angles from the left and right.

In the first embodiment of the present invention, the image of the first display apparatus 410 is transmitted and the image of the second display apparatus 420 is reflected. However, the image of the first display apparatus 410 may be reflected and the image of the second display apparatus 420 may be transmitted.

The half mirror 430 is a mirror that transmits light on one side and reflects light on the other side, and is also called a translucent mirror. In addition, the display apparatuses 410 and 420 may be maintained while maintaining a constant angle. Preferably, the display apparatuses 410 and 420 may be maintained while maintaining an angle of 45 degrees. However, the angle of 45 degrees may be changed according to the refractive index and the reflectance of the half mirror 430 and the left and right images displayed on the display devices 410 and 420 may be simultaneously formed on the half mirror 430 without being distorted. It is enough if you can.

The image reversing circuit 440 inverts the image of the display apparatus for illuminating the image on the reflective surface of the half mirror 430 among the display apparatuses 410 and 420.

The reason is that since the reflection surface of the half mirror 430 is like a mirror, the image of the display device that is illuminated is inverted in left and right directions.

 In an embodiment of the present invention, since the right eye image of the second display apparatus 420 is reflected by the half mirror 430, the image inversion circuit 440 may right and left the right eye image of the second display apparatus 420. Invert

Accordingly, the left and right eye image signals generated by the sensor unit 200 are made into a stereoscopic image by the stereoscopic image display unit 400, and the observer wears polarized glasses 500 and forms a stereoscopic image formed on the half mirror 430. By looking at the observer can observe the X-ray image as a three-dimensional stereoscopic image.

2 is a view showing a stereoscopic X-ray imaging apparatus having two X-ray sensor units according to another embodiment of the present invention, Figure 2a is a stereoscopic X having two X-ray sensor unit according to another embodiment of the present invention FIG. 4 is a view illustrating a manufacturing process of a fourth display device of a line imaging device.

Hereinafter, a description of the same components as those of FIG. 1 will be omitted.

Referring to the drawings, a stereoscopic X-ray imaging apparatus including two X-ray sensor units according to another embodiment of the present invention includes two X-ray light emitting units 100a and 100b, two X-ray sensor units 200a and 200b, And a signal processor 300 and a stereoscopic image display unit 600. The stereoscopic image display unit 600 includes a third display apparatus 610, a fourth display apparatus 620, and a half mirror 430. Is done.

The stereoscopic X-ray imaging apparatus according to another exemplary embodiment of the present invention can implement stereoscopic images simply without the image inversion circuit 440.

In general, the LCD panel 611 has a front polarizing filter 612 attached to the front of the LCD liquid crystal panel 611a and a rear polarizing filter 612a attached to the rear. In addition, when the LCD panel 611 is viewed from the front, the front-rear polarization angles of the front and rear surfaces are 45 degrees to 135 degrees and 135 degrees to 45 degrees by the front polarization filter 612 and the rear polarization filter 621a. Degrees, 0 degrees-90 degrees or 90 degrees-0 degrees make 90 degrees to each other. In addition, if the rear case and the backlight unit (BLU: Backlight unit) are removed due to the characteristics of the LCD, it is possible to see the transmission image in which the front and the left and right are reversed.

After the backlight 613 is separated from the third display apparatus 610 by using the structure of the LCD panel as shown in FIG. 2A, the LCD panel 611 is maintained 180 at the top and the bottom. After the rotation, the fourth display apparatus 620 in which the left and right directions of the image are reversed by combining the backlight 613 is manufactured. That is, the rear surface of the LCD panel 611 of the third display device 610 is the front surface of the LCD panel 621 of the fourth display device 620.

In addition, when the front-rear polarization angle is 45 degrees to 135 degrees and 135 degrees to 45 degrees, the front polarization angle of the third display apparatus 610 and the front polarization angle of the fourth display apparatus 620 are also the same. Since the half mirror 430 has a three-dimensional image having a polarization angle of 90 degrees to each other. However, when the front-rear polarization angle is 0 degrees to 90 degrees or 90 degrees to 0 degrees, the front polarization angle of the third display apparatus 610 and the front polarization angle of the fourth display apparatus 620 are 90 degrees to each other. Although half mirror 430 is formed, the left eye image and the right eye image having a polarization angle of 90 degrees are simultaneously formed.

Therefore, the image and polarization of the third display apparatus 610 are transmitted to the half mirror 430, and the image and polarization of the fourth display apparatus 620 are reflected and inverted. It can produce the same effect as 400).

In the above, the configuration and operation of the present invention has been shown in accordance with the above description and drawings, but this is merely described, for example, and various changes and modifications are possible without departing from the spirit and scope of the present invention. .

As described above, according to the present invention, by integrating a three-dimensional image output device into the X-ray imaging apparatus, there is an effect that the viewer can feel visual vividness and reality as if the X-ray image is seen in real life.

In addition, according to the present invention there is an effect that can display the image inverted left and right on the reflective surface of the half mirror without having an image reversing circuit.

Claims (9)

Two X-ray light emitting units irradiating X-rays to the subject; Two X-ray sensor units which are paired with the X-ray light emitting unit one-to-one and receive X-rays transmitted through the subject to generate a left eye image signal and a right eye image signal; A signal processor which receives the image signals and converts the image signals into left eye image data and right eye image data; And A stereoscopic image display unit for receiving a left eye image data and a right eye image data from the signal processor to create a stereoscopic image; The stereoscopic image display unit: A first display device having a polarization filter having a polarization angle of 45 degrees on a front surface of the display panel; A second display device installed at an angle of 90 degrees with the first display device, and having a polarization filter having a polarization angle of 45 degrees on the front of the display panel; A half mirror disposed between the first display device and the second display device to form an angle of 45 degrees with the first display device and the second display device; And And an image inversion circuit for inverting the image of the display apparatus providing the image reflected by the half mirror among the display apparatuses from side to side. The method of claim 1, The first display device and the second display device are three-dimensional X-ray imaging apparatus having two X-ray sensor unit, characterized in that the polarization filter is attached to the front of the display panel with a polarization angle of 135 degrees. The method according to claim 1 or 2, The display apparatus is a stereoscopic X-ray imaging apparatus having two X-ray sensor unit characterized in that the LCD panel. The method according to claim 1 or 2, The display panel is a stereoscopic X-ray imaging apparatus having two X-ray sensor unit, characterized in that consisting of a PDP panel or an OLED panel. Two X-ray light emitting units irradiating X-rays to the subject; Two X-ray sensor units paired with the X-ray light emitting unit and receiving X-rays passing through the subject to generate a left eye image signal and a right eye image signal; A signal processor which receives the image signals and converts the image signals into left eye image data and right eye image data; And A stereoscopic image display unit for receiving a left eye image data and a right eye image data from the signal processor to create a stereoscopic image; The stereoscopic image display unit: A third display device including an LCD panel having two polarization filters having a 90 degree polarization angle difference attached to a front side and a rear side thereof, and a backlight for supplying illumination to the LCD panel; In the third display device, the LCD panel is rotated by 180 degrees while maintaining the upper and lower portions thereof, so that the backlight is positioned in the front direction of the LCD panel. 4 display device; And And a half mirror disposed between the third display device and the fourth display device to form an angle of 45 degrees with the third display device and the fourth display device. X-ray imaging device. The method of claim 5, wherein The LCD panel of the third display apparatus has a three-dimensional X-ray image having two X-ray sensors, wherein a polarization filter having a polarization angle of 45 degrees is attached to the front surface and a polarization filter having a polarization angle of 135 degrees is attached to the rear surface of the LCD panel. Device. The method of claim 5, wherein The LCD panel of the third display apparatus has a three-dimensional X-ray imaging apparatus having two X-ray sensors, wherein a polarization filter having a polarization angle of 135 degrees is attached to the front surface and a polarization filter having a polarization angle of 45 degrees is attached to the rear surface of the LCD panel. . The method of claim 5, wherein The LCD panel of the third display device is a stereoscopic X-ray imaging apparatus having a plurality of X-ray sensor units, characterized in that a polarization filter having a polarization angle of 90 degrees is attached to the front surface and a polarization filter having a polarization angle of 0 degrees is attached to the rear surface. . The method of claim 5, wherein The LCD panel of the third display apparatus has a three-dimensional X-ray imaging apparatus having a plurality of X-ray sensors, wherein a polarization filter having a polarization angle of 0 degrees is attached to the front surface and a polarization filter having a polarization angle of 90 degrees is attached to the rear surface of the LCD panel. .

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