KR20180128589A - Digital camera system for taking image inside oral cavity - Google Patents

Abstract

The present invention relates to an intraoral photographing digital camera system, which does not require a separate adjustment after calibrating a focus at an initial stage of use by allowing the depth for a tooth which is a subject, to be maximally deepened, and can maximally enlarge a photographing area of a tooth to be observed. The intraoral photographing digital camera system comprises: a mirror extension support unit coupled to a housing of an intraoral photographing digital camera; a reflective mirror coupled to the mirror extension support unit; an illumination LED module for projecting illumination light onto the reflective mirror; an objective lens for receiving an incident image focused on the reflective mirror; a CCD camera unit for acquiring an image incident through the objective lens; a control unit coupled to a CCD camera module to acquire the image; a focus adjusting jig provided to adjust a focal distance between the objective lens and the CCD camera module; and a communication unit for transmitting the image acquired by a camera circuit to an external device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital camera system for taking an oral cavity,

The present invention relates to a digital camera system for photographing an oral cavity, and it is an object of the present invention to provide a digital camera system for taking a picture of an oral cavity, in which the depth of a tooth as a subject is maximized so that no adjustment is necessary after the focus is calibrated at the beginning of use, And more particularly, to a digital camera system for taking an oral image.

In general, dental treatment includes direct observation, indirect observation using a mirror, and finally a method of observing an image taken by a camera on a screen.

In the case of conventional direct observation or indirect observation using a mirror, it is difficult to show the image observed by the mirror dentist to the patient, so that there is a difficulty in making decision for treatment with the patient in the dental treatment process.

In order to solve this problem, techniques for photographing and presenting an image related to a tooth by using a very small CCD (Charge Coupled Device) camera have been put to practical use. However, it is difficult to sterilize the tip of a camera integrated with a camera inserted in the mouth. Respectively.

In order to solve such a problem, Japanese Unexamined Patent Publication No. 2002-143090, which is a conventional technology of Korean Patent No. 1119447, entitled " Oral Imaging Digital Camera ", discloses a camera unit for intraoral examination for freely attaching / The

Japanese Laid-Open Patent Publication No. 2002-143090 has a tooth attachment, and it is preferable that such a tooth attachment is made of a metal in view of the necessity of disinfection. The tooth attachment is composed of a mirror, a tongue bag supporting the tooth, and a fastener for fastening the fastener. The fitting fastener is resilient and flexible so that a hygienic problem can be solved.

However, since the object in the oral cavity of the patient is projected on a monitor connected to the monitor by the cable of the conventional technique disclosed in Japanese Patent Application Laid-Open No. 2002-143090, which is located separately from the camera case, In order to solve the problem that it is difficult for the dentist and the patient to confirm the condition of the teeth, the dentition, and the gums, Japanese Laid-Open Patent Publication No. 2002-143090 has no sanitary problem, , And proposed a digital camera for oral imaging that allows the patient to easily view it on the screen.

1, the digital camera for photographing an oral cavity includes a camera body 2 constituted by a lens barrel 2a to be inserted into an oral cavity, And a dental appliance (3) as a dental appliance for observing the rear side of the teeth. The liquid crystal display device (2c) is mounted on the middle part of the camera body (2) The camera body 3 is provided with a mirror 3a, a tibia bag 3b for supporting the mirror 3a, and an outer cylinder 3c made of a metal to which the tibia bag 3b is attached, As shown in Fig.

With this structure, when the camera is used, the dental appliance 3 having the mirror 3a, which is likely to directly contact teeth, teeth, and gums in the oral cavity, ), So that it is possible to sterilize by heating with an autoclave or the like, so that it is possible to solve some problems of hygiene.

As a configuration for illuminating an object in the mouth and photographing with an image pickup element, for example, a light source such as a CCU (camera control unit) and a white LED for illumination is formed in the camera body 2, By arranging the optical element for guiding the illumination light to the distal end portion of the barrel section 2a and arranging the imaging element in the barrel section 2a and sandwiching the objective lens 19 at the distal end section of the barrel section 2a, The dental appliance 3 can be used to irradiate the patient's oral cavity with the illumination light, and the state of the patient's teeth, dentition, and gums can be detected with the imaging element 7 of the Complementary Metal Oxide Semiconductor (C-MOS) And can be displayed as a still image or a moving image on the liquid crystal display device 2c mounted on the middle portion of the camera body 2. [

However, such a conventional technique uses a plate-type reflective mirror for teeth or the like to be observed in a patient's mouth, so that the depth of the subject is short, or the area to be observed is small, so that there is a limit to shooting the entire lesion.

Further, even if a generalized auto-focus camera is used, since it takes a certain time to focus, there is a limit to acquire an image of an observation object in real time .

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems of the prior art described above by enlarging an image acquisition area of a tooth to be observed by using a convex mirror as a reflection mirror.

Another object of the present invention is to make the depth of a subject as deep as possible so that there is no need to focus separately after an initial calibration operation.

The above object of the present invention is also achieved by a digital camera system for taking a picture in an oral cavity, comprising: a mirror extension support unit coupled to a housing of the digital camera for taking a picture of the mouth; A reflective mirror coupled to the mirror extension support; An illumination LED module for projecting illumination light to the reflection mirror; An objective lens for receiving an image formed on the reflection mirror; A CCD camera unit for acquiring an image through the objective lens; A control unit coupled to the CCD camera module for image acquisition; A focus adjusting jig provided for adjusting a focal distance between the objective lens and the CCD camera module; And a communication unit for transmitting the image obtained by the camera circuit to an external device.

Therefore, the digital camera system for photographing in the oral cavity of the present invention has the effect of enlarging the image acquisition area of the teeth to be observed by using the convex mirror as the reflection mirror.

In addition, the present invention has another effect of enhancing the user's convenience by making the depth of the subject as deep as possible and eliminating the task of focusing separately after the initial calibration operation.

1 is a block diagram of a digital camera for taking an oral cavity according to a conventional technique,
2 is an outline view of a digital camera system for taking an oral cavity according to the present invention,
FIG. 3 is a view showing a state of the observation target region according to the type of the reflection mirror,
4 is a configuration diagram of the LED module according to the present invention,
5 is a block diagram of a fixing holder and an LED module according to the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

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

2 is a schematic diagram of a digital camera system for taking an oral cavity according to the present invention.

2, the digital camera system for taking a picture of oral cavity according to the present invention is coupled with a housing 110 of a digital camera for taking an oral cavity, and one end of the mirror extension support 130 is inserted into the fixed holder 120 It is fixed by fastening bolts.

The reflecting mirror 140 is coupled to the other end of the mirror extension supporting part 130. The reflecting mirror 140 is fixed to the fixing holder 120 at the tip of the housing 100 to receive the LED module 150 .

The basic configuration of the mirror extension support 130 and the reflection mirror 140 is similar to that used for indirect observation using mirrors used by dental healthcare workers, so that a traction operation, a side view of the last molar teeth And so on, thereby making the user's familiarity higher.

The front surface of the LED module 150 is provided with a filter 180 functioning as an infrared ray blocking function or a dustproof and waterproof function. The filter 180 includes a filter for blocking infrared ray, a filter for dustproof and waterproofing Respectively.

The CCD camera module 170 is provided with an objective lens 160 for receiving an image of a tooth to be imaged on the reflection mirror 140 and acquiring an image through the objective lens 160, The control unit 200 is coupled to the CCD camera module 170 to acquire an image of a tooth to be imaged. The control unit 200 is realized by a general PCB (Printed Circuit Board).

In addition, although a general oral digital camera adopts a voice coil motor (VCM) method for automatically focusing, there is a phenomenon that focus alignment is delayed by the driving of the VCM, And focus adjustment jigs 320 and 330 are provided to adjust the focal distance between the objective lens 160 and the CCD camera module 170 by employing the focus adjustment method.

The focus adjusting jigs 320 and 330 adjust the focus by adjusting the distance between the objective lens 160 and the CCD camera module 170 by the forward and backward movement of the control unit 200 coupled with the CCD camera module 170.

The control unit 200 includes a control unit 200 and a CCD camera module 170. The control unit 200 includes a control unit 200 and a control unit 200, The focus adjusting jigs 320 and 330 adjust the focus by rotating the focus adjusting screw 320 and adjust the focus fixing screws 320 to fix the focus. And a focus fixing screw 330 for preventing rotation of the lens barrel.

When the focus is adjusted by the focus adjusting jigs 320 and 330 so that the image of the tooth is clearly visible, the control unit 200 obtains the image by the operation of the photographing button 400. Although the shooting button 400 is connected to the outside through a cable in FIG. 2, it may be installed in the housing 110 as well.

The thus obtained image is transmitted to an external device by a communication unit (not shown) included in the control unit 200. [

Here, the communication unit communicates with the external system 500 a digital camera for photographing in the oral cavity using a wired or wireless network, and the external system 500 includes a user device (not shown) having a display function and a server (Not shown).

In the user device constituting the external system 500, the image transmitted from the communication unit is received and displayed, and the received image is managed and transmitted to the server.

Personal information of the server in which the personal information is stored in the external system 500 includes personal information and medical information of the patient to be observed and the server includes a picture archiving and communication system (PACS), an electronic medical record (EMR) Record), and a RIS (Radiology Information System).

Fig. 3 is a view of the observation target region according to the type of the reflection mirror. As the reflecting mirror 140, FIG. 3A shows a general flat mirror, and FIG. 3B shows a convex mirror of the present invention.

As shown in FIG. 3, when the lens has a focal length of 6 mm, an object distance is 6 cm, and a mirror diameter is 20 mm, when the plane mirror is used, the object area diameter is 22 mm, When a convex mirror with a curvature of 10 cm is used as shown in Fig. 3 (b), the diameter of the object region is enlarged to 30 mm, and the area of the tooth to be actually observed can be increased more than two times.

When a reflective coating layer is formed on the rear surface of the reflective mirror 140 in order to reflect light, when the reflective coating layer is formed on the back surface of the convex mirror in the case of using a convex mirror as shown in FIG. 3 (b) So that the quality of the image obtained by overlapping two images is lowered. To prevent this, a reflective coating layer is formed on the front surface of the convex mirror.

The reflective coating layer is formed by vacuum evaporation of aluminum, which is a general material. To prevent scratches or the like that may be generated when the reflective mirror is used, a protective film layer having alumina permeated by an electron beam is further formed on the reflective coating layer More preferable.

4 is a configuration diagram of an LED module according to the present invention.

As shown in FIG. 4, the LED module 150 is mounted on an LED PCB substrate, which is an LED seating part 153, and includes an LED module 151 for illumination and a mirror extension support part 130 and the ultraviolet LED module 152 for disinfecting the reflective mirror 140 are further provided.

This is not only disinfection by using a high pressure steam sterilizer (autoclave) which is a disinfection mechanism by separating the reflection mirror 140 in general, but also by using the reflection mirror 140 and the mirror extension support 130 ) To prevent the infections and the like, thereby further improving the hygiene.

The dual illumination LED module 151 may use all of the narrow angle LEDs to illuminate the reflective mirror 140 while the ultraviolet LED module 152 includes the mirror extension support 130 and the reflective mirror 140 ) Of the illumination LED module 151 so as to be disinfected.

FIG. 5 is a configuration diagram of a fixed holder and an LED module according to the present invention, and shows a part that is not clearly shown in the schematic diagram of the digital camera system for photographing in the mouth in FIG. 2 again.

5, a fixing holder 120 (only partially shown) is inserted into the housing 110, and an LED seating part 153 on which the LED module 150 is seated is seated in the fixing holder 120 And grooves for connecting the objective lens 160 and the grooves for forming the optical path and the wires of the LED seating part 153 to the control part 200 are formed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Various changes and modifications will be possible.

110: housing 120: fixed holder
130: mirror extension support part 140: reflection mirror
150: LED module 160: objective lens
170: CCD camera module 180: filter
200: control unit 300: focal length adjusting jig
310: Focus adjusting screw 320: Focus fixing screw
400: shooting button 500: external system

Claims (10)

A digital camera system for taking a picture in an oral cavity,
A fixed holder coupled to the housing of the digital camera for taking a picture of the mouth and having one end of the mirror extension support inserted and fixed;
A reflective mirror coupled to the mirror extension support;
An LED module for projecting illumination light to the reflection mirror;
An objective lens for receiving an image formed on the reflection mirror;
A CCD camera module for acquiring an incident image through the objective lens;
A control unit coupled to the CCD camera module for image acquisition;
A focus adjusting jig provided for adjusting a focal distance between the objective lens and the CCD camera module; And
And a communication unit for transmitting the image acquired by the control unit to an external device.
The method according to claim 1,
Wherein the reflective mirror is a convex mirror.
3. The method of claim 2,
Wherein a reflective coating layer is formed on a front portion of the convex mirror.
The method of claim 3,
Wherein a protective film layer formed by infiltrating alumina by an electron beam is further formed on the reflective coating layer.
The method according to claim 1,
Wherein the front surface of the LED module is further provided with a filter functioning as a function of at least one of infrared ray blocking, dustproofing, and waterproofing functions.
The method according to claim 1,
Wherein the focus adjustment jig adjusts focus between the objective lens and the CCD camera module by forward and backward movement of the control unit coupled to the CCD camera module.
The method according to claim 6,
The focus adjusting jig includes a focus adjusting screw for adjusting focus by rotation of the focus adjusting screw and a focus adjusting screw for preventing rotation of the focus adjusting screw, Wherein said at least one of said at least one of said first and said second at least one of said first and said second at least one of said first and second cameras is a digital camera.
The method according to claim 1,
Wherein the LED module further comprises an ultraviolet LED module for disinfecting the mirror extension supporting part and the reflection mirror.
The method according to claim 1,
Wherein the communication unit includes at least one of a user device having a display function and a server in which personal information is stored, wherein the external unit communicates with the external system via the wired or wireless network,
Wherein the user device performs at least one of receiving and displaying an image transmitted from the communication unit, storing and managing the received image, and transmitting the received image to the server. .
10. The method of claim 9,
The server includes at least one of a Picture Archiving and Communication System (PACS), an Electronic Medical Record (EMR), a Personal Health Record (PHR), and a Radiology Information System (RIS) One or a cloud server connectable to the digital camera system.

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