KR100369287B1 - vision system for diagnosis - Google Patents

Abstract

The present invention relates to a vision system for observing a human body that can observe the affected part of the human body, the conventional vision system solves the problems of large volume and heat generation by using a halogen lamp as a light source. To this end, the vision system for human observation according to the present invention has a double cylinder structure having a predetermined length, and the inner cylinder 35 is provided with a lens group that receives an image incident from an inspected object and expands or reduces it at an appropriate magnification. A tip 30 having a plurality of optical fibers between the 35 and the outer cylinder 37; A light source (41) composed of a plurality of light emitting diodes for illuminating the inspection object by irradiating light with the optical fiber; A CCD camera module 51 for capturing an image of an object to be delivered through the lens group and converting the image into an electrical signal; A focus adjusting unit (43, 45) for adjusting the focus of the CCD camera module (51); And a frame grabber module 53 for storing and processing an electrical signal for an image to be inspected by the CCD camera module 51 and outputting an image signal to an external display device. This vision observation system for human body has the advantage that the light source is light-emitting using the light emitting diode 41 instead of the conventional halogen lamp, and can be miniaturized. Therefore, the portable type is convenient for carrying. In addition, it is possible to use the connector 47 to detach the tip 30 from the handpiece part 50, and there is an advantage in that the tip can be replaced according to the purpose. Therefore, it is economical because it is not necessary to purchase all vision systems for the purpose because only the tip needs to be changed for each purpose.

Description

Vision system for human observation

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vision system for observing a human body, and more particularly, to a portable type vision system in which a light source and a frame grabber are integrally formed.

In general, the human vision system includes an image pickup unit for enlarging and picking up an image of an inspection object, a CCD camera installed at a next stage of the image pickup unit to convert the picked-up image into an electrical signal, and the electrical image. It is composed of an image processing device that receives a signal through a cable and displays it on a monitor. 1 is a schematic view of a conventional general human observation vision system, a vision system having a bent tip angled tip portion to be free to inspect the inspection object irrespective of the position and angle of the inspection object (Utility model registration number: Thread 0140160) And Figure 2 shows the internal configuration of the bending tip which is part of the vision system of FIG.

1, there is a bending tip 1, which is connected to a light source 7 and a camera control unit 9. The bending tip 1 is connected to the light source 7 and the optical fiber 13, while the camera control unit 9 is connected to the cable 17. The light source 7 and the camera control unit 9 are composed of a control module, which is connected to the image processing apparatus 10 by a cable.

2, the bending tip is largely composed of a cylindrical body portion 1 and the light guide cap 3 which is detachably coupled to the body portion 1 and has a bent portion at a predetermined angle, for example, 90 °. It is. The straight portion of the body portion 1 and the light guide cap 3 has a double cylinder structure consisting of an outer cylinder 11 and an inner cylinder 12, and a plurality of optical fibers 13 between the outer cylinder 11 and the inner cylinder 12. ) Is closely inserted to transmit the light from the light source 7 without loss. The rear end of the inner cylinder 12 of the body 1 is provided with a CCD camera 14 for converting the enlarged image into an electrical signal, and the picked-up image is pre-determined at the front end of the CCD camera 14. The image magnification lens group 15 made up of a plurality of lenses is arranged to magnify at a magnification of 10 so as to form an image in the CCD cell 16 of the CCD camera 14.

On the other hand, the light guide cap 3 is a total cylindrical mirror 21 is attached to form a 45 ° inclination to the portion facing the body portion 1 for 90 ° bending, a straight cylindrical portion connected to the body portion 1 22 includes a magnification conversion lens group 23 for changing the magnification of the picked-up image in combination with the image magnification lens group 15, and an optical fiber (B) between the outer cylinder 11 and the inner cylinder 12; 13 extends to the front of the mirror 21.

Referring to FIGS. 1 and 2, the operation of the conventional vision system will be described. First, when a light beam is irradiated from the light source 7 to the total reflection mirror 21 through the plurality of optical fibers 13, as shown by arrows, the mirror 21 is used. ) Is totally reflected and then changed by 90 ° with respect to the direction of incidence of the light beam and irradiated to the inspected object 5, for example, the skin along the transparent light guide cap 3.

The light beam reflected from the skin is then reflected by the mirror 21 and enlarged through the magnification conversion lens group 23 and the image magnification lens group 15 to be converted into an electrical signal by the CCD cell 16 of the CCD camera 14. This electrical signal is then input to the camera control unit 9 via the cable 17. Thereafter, the image signal processed by the camera control unit 9 is displayed on the monitor of the image processing apparatus 10. As such, when the subject, that is, the affected part of the patient, is displayed as an enlarged image on the monitor, the examiner, that is, the doctor, examines the patient in detail.

As described above, the vision system for human observation is a useful system that assists the doctor in various fields such as dentistry, otolaryngology, obstetrics and gynecology by enlarging and displaying the image that is difficult to identify with the naked eye when the doctor treats the patient. However, current general human observation vision system has the following problems.

In the conventional vision system, as shown in FIG. 1, the light source 7 is separated from the bending tip 1 and configured in a control module separately, and the bending tip 1 and the light source 7 are connected by an optical fiber 13. It is. As the light source 7, a 100W halogen lamp is mainly used. Therefore, there is a problem that there is a lot of heat due to the lighting of the halogen lamp and this heat is likely to affect the camera control unit 9. In addition, the control module is provided with a cooling fan for cooling the heat of the halogen lamp. The installation of the cooling fan has a problem that the control module is bulky. A monitor of 14 inches or more is used as a monitor of the image processing apparatus 10. Therefore, there is a problem in that the volume of the vision system as a whole is subject to a lot of space constraints in installation.

Therefore, in order to solve the above problems, the present invention is intended to provide a vision system for observation of the human body having low heat generation by the light source, the volume is not limited by space when installed, and good mobility.

1 is a schematic configuration diagram of a conventional imaging system for human observation.

Figure 2 is a cross-sectional view of the conventional bending tip for human body imaging system.

Figure 3 is a perspective view of a human body observation vision system according to an embodiment of the present invention.

Figure 4 is an exploded perspective view of the present human observation system vision.

5 is a cross-sectional view of the present human observation system.

6 is a sectional view of a connector portion of the vision system for human observation.

Figure 7 is an exploded perspective view of the connector portion of the vision system for human observation.

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

30: tip 31, 33: fiber holder

35: inner cylinder 37: outer cylinder

40 connector 41 light emitting diode

43: lens fixer 45: gyrator

47: connector 49: focus adjuster

50: handpiece 51: CCD camera module

53: image memory board

In order to achieve the above object, the vision system for human observation according to the present invention has a double cylinder structure of a predetermined length, and the inner cylinder is provided with a lens group that receives an image incident from an inspected object and enlarges or reduces it at an appropriate magnification. A tip having a plurality of optical fibers between the inner cylinder and the outer cylinder; A light source comprising a plurality of light emitting diodes for illuminating the inspection object by irradiating light with the optical fiber; A CCD camera module for capturing an image of the inspection object transmitted through the lens group and converting the image into an electrical signal; A focus adjusting unit for adjusting a focus of the CCD camera module; And a frame grabber module 53 for storing and processing an electrical signal for an image to be inspected by the CCD camera module and outputting an image signal to an external display device.

In addition, the tip may be separated from the CCD camera module so as to be interchangeable according to a purpose.

In addition, a groove is formed at one side of the tip, and a projection is formed at the CCD camera module side.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the vision system for human observation according to the present invention. Figure 3 is a perspective view of one embodiment of the present observation system for human observation, Figure 4 is an exploded perspective view.

3 and 4, the human body observation vision system is largely composed of a tip 30, a connector portion 40, and a handpiece portion (handpiece 50). 5 is a cross-sectional view of the tip portion 30. Referring to Figure 5, the tip portion 30 is composed of two parts, the outer cylinder 37 and the inner cylinder 35. At the left end of the outer cylinder 37 is a reflector 39, and at the right end of the outer cylinder 37 is a light emitting diode 41. A plurality of lenses are arranged in the inner cylinder 35. The next stage of the light emitting diode 41 has a focus adjuster 49, and the next stage of the focus adjuster 49 is a handpiece section 50. The handpiece section 50 has a CCD camera module 51 and an image. The memory board 53 is located.

The outer cylinder 37 is a portion in which a plurality of optical fibers (not shown) for transmitting light from the light source 41 to the reflecting mirror 39 is installed. The portion close to the right end portion is bent in an elongated trapezoidal shape. In addition, the inner cylinder 35 is a portion accommodating a lens group for transferring an image of an inspection object incident through the reflector 39 to a CCD camera, which will be described later, at an appropriate magnification. Between the outer cylinder 37 and the inner cylinder 35, a fiber holder for holding the optical fiber installed in the outer cylinder 37 as well as supporting and fixing the position of the inner cylinder 35 in the outer cylinder 37 in the center ( Two fiber holders 31 and 33 are provided on the proximal ends of both ends.

The first fiber holder 31 positioned near the reflecting mirror 39 has a trapezoidal cross section, and is circular when the right end surface of the first fiber holder 31 is enlarged, and an inner cylinder 35 may be inserted in the center thereof. Openings are formed. In addition, four fan-shaped holes are formed in the middle portion of the opening and the outer portion so that the optical fiber can be inserted. The left end face of the first fiber holder 31 is similar to the right end face, and the outer diameter thereof is reduced compared to the outer diameter of the right end face. On the other hand, the second fiber holder 33 spaced relatively far from the reflecting mirror 39 has a bent portion in the middle to form two trapezoids facing each other, and when the right end surface of the second fiber holder 33 is enlarged, It is similar in shape to the fiber holder 31.

Next, the reflector 39 reflects the image incident from the inspected object by a predetermined angle and transmits the image to the internal lens of the tip 30. As will be described later, the light irradiated when the light emitting diode 41 emits light is emitted from the optical fiber. When the light is transmitted to the reflector 39, the light is reflected by a predetermined angle to illuminate the test object.

In this embodiment, the reflector is configured to totally reflect the optical body that transmits the image of the external inspected object to the inner lens of the tip. The reflecting mirror may be formed of concave, flat, convex mirror, or the like so as to effectively reflect incident light to the internal lens. As described above, in the present embodiment, the optical body is configured using a mirror, but it is also possible to construct the optical body by using a prism instead of the reflecting mirror. Since the prism can adjust the incident angle and the reflection angle according to its shape, it is preferable to use the prism if it is necessary to adjust the reflection angle of light.

In the present embodiment, the reflector 39 is configured at the end of the tip 30. However, the reflector 39 may not be configured without following the present embodiment. That is, it is also possible to configure the image of the object to be incident directly on the lens inside the tip without reflection. Since the structure of the tip is changed according to the use of the present vision system, the presence or absence of the reflector and the shape thereof may be changed accordingly, and therefore, it is preferable to configure the optical body to be suitable for each tip.

3 and 4 illustrate an embodiment of a dental tip. However, the tip 30 will be described later, but since it is configured to be separated from the main body, it is also possible to configure the tip in various forms to be interchangeable without conforming to the present embodiment. That is, it is also possible to configure the tip applicable to the otolaryngology, dentistry, obstetrics and gynecology so that only the tip can be replaced if necessary.

Next, the light emitting diode 41 is a light source adopted in the present invention in place of the halogen lamp, which is the conventional light source 7 described above, as a light source for dimming the inspected object. The light emitting diode 41 used to emit white light of high brightness when turned on, and was constructed using a small size of several mm in diameter. Therefore, it is very small compared to the conventional halogen lamp and does not take up the volume. Light emitted by the light emitting diodes 41 is transmitted to the reflector 39 through the optical fiber installed in the outer cylinder 37. Although not shown in detail in FIG. 5, the light emitting diode 41 is embedded in the left end of the connector 47 connected to the right end, rather than the right end of the tip 30. FIG. 6 is a cross-sectional view of the connector portion 40, and FIG. 7 is an exploded perspective view in which components of each connector portion 40 are disassembled.

Referring to Figure 6, the connector portion 40 is largely a connector 47 for interconnecting the tip 30 and the handpiece portion 50, the focus adjusting portion 43, 45 for adjusting the focus, and for the CCD camera It consists of a lens part.

6 and 7, the connector 47 has a circular shape as a whole. A protrusion 47a is formed along the circumferential surface at the left outer side, and a thread 47b is formed at the right outer side. At the left end, four light emitting diode accommodation portions 41a for incorporating the light emitting diodes 41 are divided into four. The inside of the connector 47 is provided with a space for accommodating a gyrator 45 for adjusting the focus. The outer side of the connector 47 is formed with a ball receiving device 47c for accommodating the ball, which is a part of the focus adjustment unit described later.

The protrusion 47a of the left outer side of the connector 47 is configured to couple to the right side of the tip 30 described above, and the groove 47 that can be coupled to the protrusion 47a at a portion near the right end of the tip 30. It is formed along the inner circumferential surface of this outer cylinder 37. Therefore, the protrusion 47a of the connector 47 and the groove of the tip 30 are coupled to the left side of the connector 47 and the right side of the tip 30. On the other hand, the thread 47b formed on the right outer side of the connector 47 is configured to couple with the left side of the handpiece part 50. A thread 50a is formed on the left inner circumferential surface of the handpiece part 50, so that the right side of the connector 47 and the left side of the handpiece part 50 can be engaged. By the above projections 47a and threads 47b, the connector 47 can couple the tip 30 and the handpiece 50 to each other.

In this embodiment, as described above, the protrusion 47a is formed in the connector 47 as a coupling member for separating and coupling the tip 30, and a groove is formed in the tip 30. However, it is also possible to form the thread 30 in the tip 30 and the connector 47 without coupling the embodiment, so that the tip 30 can be coupled to the connector 47 in the form of a screw.

The tip 30 can be separated by the protrusion 47a of the connector 47 described above. Therefore, the tip 30 can be replaced, and the tip 30 may be replaced with a tip suitable for the purpose.

Next, the focus adjusting unit includes a focus adjuster 49 positioned outside the connector 47 and a gyrator 45 positioned inside the connector 47.

A thread is formed on the outer side of the gyrator 45, and a thread is formed on the inner side of the focus adjuster 49. These two threads are aligned, and the ball located at the ball receiving tool 47c of the connector 47 is inserted between the groove of the thread of the gyrator 45 and the thread of the thread of the focus adjuster 49. Thus, rotating the focus adjuster 49 to the left or right causes the ball to flow forward or backward on the ball receptacle 47c, while at the same time the gyrator 45 is similar to the progress of the screw inside the connector 47. Rotate right or left to flow back and forth.

A two-layered accommodating space is formed inside the gyrator 45. A CCD camera lens (not shown) is accommodated in the left accommodating space 45a, and a lens for fixing the CCD camera lens in the right accommodating space. A lens fixer 43 is accommodated. Threads are formed on the inner surface of the gyrator 45 in order to screw the lens and lens fixture 43 constituting the lens unit for the CCD camera into the gyrator 45.

When the focus controller 49 is rotated from side to side, the gyrator 45 moves back and forth, and the lens and lens for CCD camera and lens fixture coupled to the inside of the gyrator 45 according to the movement of the gyrator 45 back and forth ( 43) moves back and forth. When the lens for the CCD camera is moved back and forth, the image to be inspected by the CCD camera located on the left side of the handpiece part 50 and the next stage of the lens fixer 43 is moved back and forth near the focal point. This makes it possible to focus the CCD camera using the focus adjuster 49.

Next, the CCD camera module 51 is composed of a CCD camera and a control circuit for controlling the CCD camera. The CCD camera stores the image of the inspection object incident through the reflector 39, the lens group, and the lens for the CCD camera as digital data. The stored data is output to the next image memory board 53.

The image memory board 53 is a kind of frame grabber that processes the image of the inspection object input from the CCD camera module 51 in various forms and outputs the image data processed by a display device such as a monitor. Part.

The image memory board 53 can output video signals in two types, NTSC or PAL. Therefore, when the video signal is output to an external video device such as a TV or a monitor, it is possible to view the affected image of the examinee on an enlarged screen through the external video device.

In this embodiment, it is configured to operate in one screen mode, two screen mode, four screen mode to display a plurality of images on one screen. In addition, it is configured to display a still image and a dynamic screen on one screen to compare the normal tissue and the affected area. The control of the image by configuring a button on the handpiece 50 of FIG. 3 allows the inspector to freely control the displayed image by the manipulation of the button.

In the present embodiment, the interface between the image memory board 53 and the external video device is wired, but it is preferable to configure the wireless form in consideration of mobility, without following the present embodiment. When configuring the interface wirelessly, the transmitter (transmitter) of the wireless module is built in the handpiece part 50 so as to transmit the output signal of the image memory board 53 to the outside wirelessly through the transmitter, the external image device It is preferable that a receiver is configured to receive a video signal output from the transmitter and input the same to a monitor.

Although not shown in FIG. 5, a battery is built in the next stage of the image memory board 53 to supply power to the CCD camera module 51 and the image memory board 53. The power supply is preferably configured to be charged.

As described above, the vision system for human observation according to the present invention has the advantage that there is no heat generation when the light source is turned on by using the light emitting diode 41 instead of the conventional halogen lamp, and miniaturization is possible. Therefore, the portable type is convenient for carrying. In addition, it is possible to use the connector 47 to detach the tip 30 from the handpiece part 50, and there is an advantage in that the tip can be replaced according to the purpose. Therefore, it is economical because it is not necessary to purchase all vision systems for the purpose because only the tip needs to be changed for each purpose.

Claims (3)

It has a double cylinder structure of a predetermined length, and the inner cylinder 35 is provided with a lens group that receives an image incident from an inspection object and enlarges or reduces it at an appropriate magnification, and a plurality of optical fibers between the inner cylinder 35 and the outer cylinder 37. Is provided with a tip 30; A light source (41) composed of a plurality of light emitting diodes for illuminating the inspection object by irradiating light with the optical fiber; A CCD camera module 51 for capturing an image of an object to be delivered through the lens group and converting the image into an electrical signal; A focus adjusting unit (43, 45) for adjusting the focus of the CCD camera module (51); Vision observation system for the human body comprising a frame grabber module 53 for storing and processing the electrical signal for the image of the inspection object output by the CCD camera module 51 to output the image signal to an external display device . The vision system for human observation according to claim 1, wherein the tip (30) is detachable from the CCD camera module (51) so that the tip (30) is interchangeable according to a use. The human body observation system according to claim 2, wherein a groove is formed at one side of the tip (30), and a protrusion (47a) is formed at the side of the CCD camera module (51).