JP2020039808A - Treatment situation imaging system - Google Patents

Abstract

To provide a dental treatment situation imaging system for actual scene display of a video of a target part of dental treatment and a treatment tool operation situation on the same screen using a high definition video.SOLUTION: A treatment situation imaging system comprises: a light/camera unit 20 comprising a camera 25, a target marker 370, and a shadowless lamp 24; an imaging control circuit 84 comprising a distance measurement circuit 380, a focus/focus lock setting signal generation circuit 841, a shadowless lamp controller 240, a diaphragm signal generation circuit 86, and a focus/focus lock setting signal generation circuit 841; and an operator information terminal 83. Under an instruction from the operator information terminal 83, the focus/focus lock setting signal generation circuit 841 images a video by locking a focus point of the camera 25 at a position close to a boundary between a forward depth of field and a backward depth of field depending on brightness of a lens 26 and a diaphragm value of a diaphragm 39 of the camera 25 depending on a distance to a predetermined position of a target part 72 obtained by a target marker 370, and displays the video.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an imaging system for an oral cavity in dental care, and more particularly to a dental treatment situation imaging system for photographing and displaying an image of a target part of a dental treatment and a treatment situation on the same monitor with high definition.

  In dental treatment, images before treatment (hereinafter, including still images and moving images) or images during and after treatment are taken. Conventionally, this type of video shooting is performed by an operator (operator, dentist, dental assistant, etc.) using a digital camera on hand. In addition, still photography is also performed in dental practice. Not only one picture (still image) is recorded in one frame (angle of view), but also a plurality of pictures are recorded in one frame, so-called 5-sheet method, 9-sheet method, 12-sheet method, etc.・ ・ The photos are collectively photographed by a predetermined number of photographs under predetermined photographing conditions and a predetermined pattern (a plurality of images are created in a predetermined arrangement in one frame), and these are stored and treated. Or make it available for future screening.

  In addition, when photographing the entire patient's face in order to take a picture of the oral cavity (not only a photograph of the dentition, but also a profile (shape, size, arrangement, color, etc.) adapted to the patient's face when inserting a denture) There is also.

  The arm is provided in a chair unit for dental care (dental chair) and movably mounts an illuminating device (operating light) for illuminating the object to be treated (affected part, etc.). The one that can photograph the inside of the oral cavity is also in practical use (Patent Document 1). The camera described in this document displays an image captured by the camera on a monitor mounted on a part of the lighting device to observe the inside of the oral cavity.

  A camera and a monitor (display device) integrated with the lighting device are installed on the arm of the dental care chair unit to which the lighting device for the treatment object lighting is movably attached, and an image of the oral cavity is observed on the monitor. There has also been proposed a dental optical imaging apparatus in which a dentist (operator) sets imaging conditions and takes an image of the inside of a patient's mouth (Patent Document 2).

  FIG. 13 is a schematic diagram illustrating a dental care chair unit with an oral imaging function previously proposed by the applicant of the present application. In FIG. 13, reference numeral 1 denotes a chair unit for dental care, and 2 denotes a chair (seat surface) on which a patient sits. Reference numeral 3 denotes a backrest, 4 denotes a footrest, 5 denotes a headrest, and 6 denotes an armrest, which are connected to the chair 2. In the following, this chair composed of the seat 2, the backrest 3, the footrest 4, the headrest 5 and the armrest 6 will be described as the chair 2 unless it is necessary to particularly explain individual parts. Reference numeral 7 denotes a lifting pedestal, which has a function of raising and lowering the entire chair 2. In some cases, the chair 2 includes the lifting pedestal 7. Spitons 8 are provided on one side of the chair.

  Reference numeral 9 denotes a main pole, 10 denotes a movable pole, 11 denotes an arm (articulated arm), and a light / camera unit 20 is attached to a free end of the arm 11. The detailed configuration of the light / camera unit 20 will be described later. In the present embodiment, the main power switch 625 of the dental treatment chair unit 1 is provided on the side surface of the elevating pedestal 7. However, the main power switch 625 is provided on a part of the foot switch 19 provided in the dental treatment chair unit 1. It may be provided on the operation panel 15.

  Reference numeral 12 denotes an operation panel connecting beam, which supports the table 13 and the monitor 58. A tray 14 is provided on the upper surface of the table 13 so that various instruments, medicines, and other tools for treatment can be placed thereon. The operation panel 15 has various switches / buttons for controlling the posture and elevation of the chair 2 and various switches / buttons for controlling the light / camera unit 20. Note that the foot switch 19 can be used for part of the control of the chair 2 and the light / camera unit 20. Reference numeral 16 denotes a handpiece holder on which a treatment instrument receiver (handpiece) is installed, 17 denotes a handpiece, and 58 denotes a video monitor (display, also simply referred to as a monitor) that preferably uses a liquid crystal display.

  The patient (not shown) sits on the chair 2 in a supine or sitting position, and the oral cavity (not shown) is at the position of the headrest 5. FIG. 13 shows a state of the chair when the patient is lying on his / her back, and the oral cavity is opened above the headrest 5 in the figure. The light / camera unit 20 can be moved by the operator's hand to a position directly facing the patient's mouth with the movable pole 10 and the arm 11. This movement is performed by the operator holding the handle 22.

  FIG. 14 is an explanatory diagram of camera position setting for intraoral imaging using the light camera unit in FIG. The operator holds the handle 22 of the light camera unit 20 and moves the front of the camera 25 closer to the patient. A camera 25 is provided at the center of the frame-shaped housing 23 of the light / camera unit 20, and an operating light 24 is provided therearound. It is desirable to use a camera that can capture both still images (still mode) and moving images (video mode). A target marker 37 is attached to the top of the outer periphery of the frame-shaped housing 23.

  A target mark 73 is projected from the target marker 37 toward the face 71 of the patient 70. The projection target portion of the target mark 73 is first set to the position of the lip 72 of the patient. In this state, the patient is opened to the patient, and the camera is focused on the oral cavity to perform necessary imaging. The image of the camera in this operation can be displayed on the monitor 58 for confirmation.

  Inside the rectangular outer edge of the frame-shaped housing 23, an operating light 24 composed of a number of LEDs facing the patient is arranged. The operating light is not limited to the LED, but may be various types of discharge tubes or incandescent lamps.

Patent No. 5483252 WO 2016/108276

  In the dental treatment, an image during the treatment is taken, and the actual state of the treatment is displayed on a monitor as a live image together with the operation of the treatment tool possessed by the target part and the dentist while the actual state of the treatment is displayed by the surgeon (the dentist, Confirmation by the operator itself (also referred to as an operator such as a dental hygienist) or showing it to the surrounding medical staff (attendant) such as a resident can contribute to the advancement of treatment technology. The monitor referred to here is a video monitor suitable for a liquid crystal panel or an organic EL display.

  Furthermore, by providing the above-mentioned image to an attendant or the like on another monitor installed in a separate room or the like, it is possible to increase the trust of the medical staff. Then, by recording such a video, and reproducing and verifying the video at a later date, it is possible to help the surgeon performing the surgery to improve his / her skills.

  The prior art disclosed in Patent Literature 1 attaches a monitor and a camera to a part of an oral lighting device that can be manually operated by an arm installed on a dental chair unit, and displays an intraoral image taken by the camera. No specific technical content other than observation on a monitor is described.

  Further, the dental optical imaging apparatus disclosed in Patent Literature 2 attaches a camera and a monitor to the same arm as described above, and performs zooming, focus, illumination light, or aperture while an operator observes the image of the camera on the monitor. The photographing is performed after setting the photographing conditions, or the treatment is performed while looking at the monitor.

  In this type of dental photography, the focus of the camera is, of course, on the specific tooth to be treated and its surroundings. Although not limited to dental treatment, the movement of a handpiece (treatment instrument) used for treatment moves back and forth and right and left near the optical axis of the camera. Therefore, when the depth of field of the camera is shallow, the focused tooth is sharply photographed. In particular, the movement of the handpiece back and forth becomes out of focus as the camera is closer to the camera side, and the treatment (treatment) ) It is impossible to obtain a fine image inside.

  Attendants and attendants in separate rooms can accurately observe the contents of treatments, such as the ease of checking the condition of the inlay held at the tip of the handpiece, for the treatment and treatment side. You can also expect to create a sense of quality.

  In addition, in intraoral imaging, a photograph may be required in a state where the distance between the camera and a subject (specific part of the oral cavity of a patient) is defined (fixed). For example, photographing such as a five-sheet method, a nine-sheet method, and the like. For this purpose, a complicated operation is required for an operator to move the camera so as to match a predetermined angle of view (composition) and perform focus adjustment at that position a plurality of times.

  In the intraoral photography at a fixed shooting distance using the above-mentioned handheld camera, adjustment of the shooting posture for the patient sitting on the chair, operation of the dental unit, preparation of the camera, recording of shooting data and operation of devices such as a printer, etc. Since it is necessary to perform a plurality of operations, it is extremely difficult to perform this operation alone, and there is a demand for simplification of such oral photography.

  An object of the present invention is to solve the above-mentioned problems of the prior art, and a first object is to display a video of a target part of dental treatment and a treatment tool operation status on the same screen of a monitor in a high-definition video. Another object is to provide a dental treatment situation imaging system for reproducing and displaying.

  Further, a second object of the present invention is to provide a still image or a moving image of the five-image method, the nine-image method, and the like in a state in which the distance between the camera and a subject (a specific site in a patient's mouth) is defined (fixed). Dental treatment situation imaging system that facilitates proper focus (focusing) at a predetermined angle of view using the autofocus function of the camera used, only by adjusting the position of the dental treatment and the camera position, such as intra-oral imaging Is to provide.

  A characteristic configuration example of the dental treatment situation imaging system according to the present invention for achieving the above object will be described as follows. In addition, in order to contribute to the understanding of the configuration of the present invention, the main components of the present invention are denoted by the reference numerals assigned to the corresponding portions of the embodiments. In addition, the "target part" in the following means the vicinity of the lips treated by a dentist, a dental hygienist or a nurse, the vicinity of an intraoral tissue including teeth and gums, or the face. First, a typical configuration of the present invention for achieving the first object of the present invention will be described.

(A) A camera 25 having a variable focus function and a variable aperture function based on an autofocus and an external instruction signal, irradiating an optical target mark on a target part of dental treatment, and reflecting the target part from a target mark projection position 73. A light camera unit 20 including a target marker 370 for receiving light and an operating light 24 for illuminating the target site;
A shooting control circuit 84 including a distance measurement circuit 380, a camera control circuit 85, an operating light controller 240, an aperture signal generation circuit 86, and a focus / focus lock setting signal generation circuit 841;
An operator information terminal 83 for displaying an image signal of the camera 25 and giving an instruction to the focus / focus lock setting signal generation circuit 841;
The focus / focus lock setting signal generation circuit 841 responds to the distance to the target part obtained by the distance measurement circuit 380 based on the reflected light of the target marker 37 under an instruction from the operator information terminal 83. The focus point of the camera is locked near the boundary between the front depth of field and the rear depth of field, which depends on the brightness of the lens of the camera and the aperture value generated by the aperture signal generation circuit 86, and the image is captured. And displaying it.

(B) A camera 25 having an autofocus and a variable focus function and a variable aperture function based on an external instruction signal, a first target marker 370a and a second target marker 370b for irradiating target marks of different colors in the same pattern, and A light / camera unit 20 including an operating light 24 for illuminating the target site of the dental treatment;
A photographing control circuit 84 including a distance measuring circuit 380, a camera control circuit 85, an operating light controller 240, an aperture signal generating circuit 86, and a focus / focus lock setting signal generating circuit 841; An operator information terminal 83 for instructing the focus / focus lock setting signal generation circuit 841;
The focus / focus lock setting signal generating circuit 841 determines the target mark projection positions 73a and 73b from the first target marker 370a and the second target marker 370b under an instruction from the operator information terminal 83. The brightness of the lens of the camera 25 according to the distance to the target part obtained by the distance measuring circuit 380 based on the coincidence on the target part and the front cover depending on the aperture value generated by the aperture signal generation circuit 86 The camera is characterized in that a focus point of the camera 25 is locked near a boundary between a depth of field and a rear depth of field to shoot the video.

(C) The target marker 370 in (a) is provided with an actuator 381 for adjusting the target mark projection position 73 on the target portion, and the predetermined position of the target portion is designated under an instruction from the operator information terminal 83. The irradiation position of the target mark is adjusted so as to irradiate the target mark.

(D) The first target marker 370a in the above (b) is provided with a first actuator 381a for adjusting a first target mark projection position 73a at a predetermined position on the target portion, and the second target The marker 370b includes a second actuator 381b for adjusting a second target mark projection position 73b at a predetermined position on the target portion,
The first target mark projection position 73a and the second target mark projection position 73b illuminated on the target site under instructions from the operator information terminal 83 are matched at a predetermined position of the target site. It is characterized in that it is adjusted as follows.

(E) The imaging control circuit 84 in any one of (a) to (d) is provided with an external output circuit 38, and the image captured by the camera 25 is output from the treatment site via the external output circuit 38 The information is displayed on the remote monitor 580.

(F) The focus / focus lock setting signal generation circuit 841 based on the autofocus and the external instruction signal in any of the above (a) to (e) may be used in accordance with the degree of fine display required for the treatment target site. The depth of field is changed by controlling an aperture value given to the aperture signal generation circuit 86.

(G) The operator information terminal 83 in (a) to (f) includes a touch panel having a screen direct input function, and the target mark projection position 73 (73a, 73a, 73b) is characterized by performing the adjustment for superimposing the images.

(H) The telescopic pole 80 which is set up while holding the lower end on the movable support base 82 in (a) to (g) above, and one end is supported on the upper end of the telescopic pole 80 and the other end is photographed. It has an articulated arm 81 on which the light / camera unit 20 provided with a control circuit 84 is mounted, and the photographing position of the camera 25 of the light / camera unit 20 with respect to the target site can be adjusted. .

(I) The operator information terminal 83 for controlling the operation of the light / camera unit 20 including the shooting control circuit 84 in (G).

(U) The operator information terminal 83 in (h) is capable of communicating data including video with the system control circuit 50 of the dental care chair unit 1.

(L) The dental care chair unit 1 in (1) or (2) above has a monitor 58, the photographing control circuit 84 has an external output circuit 38, and the light / camera unit 20 has a camera 25. A photographed image can be displayed on the monitor 58 through the external output circuit 38.

(E) The dental care chair unit 1 in (u) is provided with a monitor 58, and an image displayed on the operator information terminal 83 can be displayed on the monitor 58.

(W) A remote monitor 580 is connected to the dental care chair unit 1 in (L) or (E), and an image displayed on the monitor 58 can be displayed on the remote monitor 580. And

  Next, a representative configuration for achieving the second object of the present invention will be described. The second object is to capture a still image or a moving image of a five-image method, a nine-image method, and the like in a state where a distance between a camera and a subject (a specific site in a patient's mouth) is defined (fixed). To provide a dental treatment situation imaging system that facilitates proper focusing operation at a predetermined angle of view using only the distance adjustment between the target part of the dental treatment and the camera position and using the autofocus function of the camera used. It is in.

(F) A dental treatment situation imaging system for displaying an image of a dental treatment target part and a treatment tool operation situation on the same screen of a monitor in a high-definition image,
A light including a camera 25 having a variable focus function and a variable aperture function based on an autofocus and an external instruction signal, an operating light 24 for illuminating a target portion, a camera control circuit 85, and a photographing control circuit 84 having an operating light controller 240. A camera unit 20;
An operator information terminal 83 for displaying a photographing signal of the camera 25;
An operator moves the light / camera unit 20 toward the target portion, locks the focus point of the camera 25 on the target portion by stopping the movement of the light / camera unit 20 at a desired position, and displays an image. It is characterized by shooting and displaying.

(G) The light / camera unit 20 in (F) is provided with a target marker 370, and the desired position is set in advance to the projection position 73 of the target mark irradiated from the target marker 370 to the desired position. In a state where the projection position 73 of the target mark overlaps the target portion, the movement of the light / camera unit 20 is stopped, and a focus point is locked to the target portion by an auto-focus function of the camera 25 to capture an image. , Is displayed.

(D) a dental treatment situation imaging system for displaying an image of a target part of dental treatment and a treatment tool operation state on the same screen of a monitor in a high-definition image,
A camera 25 having a variable focus function and a variable aperture function based on an autofocus and an external instruction signal, an operating light 24 illuminating a target portion, and first and second irradiating target marks having different colors to the target portion. A light / camera unit 20 having target markers 370a and 370b;
A camera control circuit 85 and a photographing control circuit 84 including an operating light controller 240;
An operator information terminal 83 for displaying a photographing signal of the camera is provided,
An operator moves the light / camera unit 20 so that the target mark projection positions 73a and 73b emitted from the first and second target markers 370a and 370b coincide with the light / camera at a distance on the target portion. In the state where the auto focus point of the camera 25 is locked with the stop of the unit 20, the video is photographed in accordance with an instruction of the operator from the operator information terminal 83.

(D) The distance at which the target mark projection positions 73a, 73b illuminated from the first and second target markers 370a, 370b in (t) coincide on the target portion is a predetermined angle of view and predetermined. It is characterized by the photographing distance of the photographing pattern obtained.

(S) The camera of the light camera unit in (A) to (D) is a 3D photographing camera.

  The present invention is not limited to the above configuration and the configurations described in the embodiments described later, and various modifications can be made without departing from the technical idea of the present invention.

1 is a functional block diagram illustrating a first embodiment of a dental treatment situation imaging system according to the present invention. It is explanatory drawing of the depth of field of a camera. 1 is a schematic diagram illustrating a specific configuration example 1 of a dental treatment situation imaging system according to the present invention. It is a perspective view explaining example 1 of composition of a light camera unit which constitutes a dental treatment situation imaging system concerning the present invention. It is a front view explaining example 2 of composition of a light camera unit which constitutes a dental treatment situation imaging system concerning the present invention. It is a front view of the 3D camera used for the example 3 of a structure of the light camera unit which comprises the dental treatment situation imaging system which concerns on this invention. It is a front view explaining example 4 of composition of a light camera unit which constitutes a dental treatment situation imaging system concerning the present invention. It is a front view explaining example 5 of composition of a light camera unit which constitutes a dental treatment situation imaging system concerning the present invention. FIG. 4 is an explanatory diagram of light projection position adjustment of the target marker when the target marker is not on the optical axis of the camera in Embodiment 1 of the dental treatment situation imaging system according to the present invention. It is a functional block diagram explaining Example 2 of the dental treatment situation imaging system concerning the present invention. FIG. 13 is an explanatory diagram of light projection position adjustment of the target marker when the target marker is not on the optical axis of the camera in Embodiment 2 of the dental treatment situation imaging system according to the present invention. FIG. 3 is a schematic diagram illustrating a specific configuration example 2 of the dental treatment situation imaging system according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram explaining the dental care chair unit with the oral imaging function proposed prior to this invention. FIG. 14 is an explanatory diagram of setting of an imaging position by a target mark in the dental care chair unit shown in FIG. 13.

  Hereinafter, an embodiment of the intraoral photography system according to the present invention will be described in detail with reference to the drawings of the embodiments.

  FIG. 1 is a functional block diagram illustrating a dental treatment situation imaging system according to a first embodiment of the present invention. In this system, an initial imaging position is set with a target part (lip, mouth) 72 of a patient as an imaging target, and then a precise imaging target part (intraoral tissues such as teeth and gums) is focused and focused. An image of a movement of a medical device in a procedure such as an operation is photographed without a focus shift. The captured video is displayed on various monitors or recorded in storage means.

  Reference numeral 20 denotes a light / camera unit, which has basically the same configuration as that shown in FIGS. That is, the camera 25, the operating light 24, and the target marker 370 are installed in a frame-shaped housing not shown in FIG. The camera 25 has a lens 26 and an aperture 39. The lens 26 has a variable focus, and an auto focus mode and a manual focus mode can be selected. When the manual focus mode is selected, the focus (focus point) can be adjusted by a focus signal (focus adjustment signal) SF from the camera control circuit 85. The aperture 39 (the amount of light reaching the image sensor) is variable by an operator's manual operation or by an aperture signal SA from the camera control circuit 85. Further, it is desirable that the photographing control circuit 84 be attached to and integrated with the frame-shaped casing 23 (FIG. 4) of the light / camera unit 20. In terms of image, the “light / camera unit 20” is a unit in which the imaging control circuit 84 is incorporated into the light / camera unit 20 and integrated.

  The target marker 370 is driven by the target marker pointing control signal SH from the camera control circuit 85 so that the target mark projection position 73 projected on the patient's face (preferably near the lips) moves. This driving is performed by the operator's information terminal in the left-right direction (horizontal direction: the longitudinal direction of the cleft lip), the up-down direction (vertical direction: the longitudinal direction of the nasal bridge) on the patient's face 71, and the rotating direction (around the optical axis of the irradiation light). The operation is performed based on an imaging region instruction signal ST instructed by a screen input of a smartphone (hereinafter, abbreviated as “smartphone” such as a smartphone or a tablet) 83. Note that the operator can manually adjust the target mark projection position 73.

  In this embodiment, the focus signal (focus adjustment signal) SF is output from the focus / focus lock setting signal generation circuit 841 under the control of the camera control circuit 85. The aperture signal SA is also generated by the aperture signal generation circuit 86 under the control of the camera control circuit 85.

  The brightness of the operating light 24 (such as hue and saturation, if necessary) is made variable by the operating light controller 240 under the control of the camera control circuit 85. Since the depth of field can be adjusted by the brightness and aperture of the lens, the image quality is within the required range based on the prediction of the movement of the imaging target (intraoral tissue) on the camera optical axis and the treatment instrument or surgical instrument. The brightness of the operating light is controlled so as to be within the range.

  In this embodiment, an image of the patient's face 71 captured by the camera 25 is supplied to the smartphone 83 as a predetermined video signal (RGB signal or composite signal) by the imaging signal processing circuit 40, or externally output as necessary. The signal is transmitted to a monitor of a dental care chair and a remote monitor described later via a circuit (output I / F).

  The smartphone 83 as an operator information terminal includes a touch panel input data processing circuit 832 that executes a touch input data processing program, and an aperture setting circuit (depth of field setting) 833 that executes an aperture setting program (depth of field setting program). And a communication and data processing signal processing circuit 834 for executing a general-purpose communication and data processing program, etc., and the target mark 73 on the face 71 displayed on the screen is superimposed on the lip 72 so that the target mark on the screen is overlaid. Is moved with fingers 831. Further, operations such as a shooting mode of the camera can be selected from the display screen of the smartphone 83.

  With the center of the target mark projection position 73 superimposed on the center of the lip 72, the camera 25 and the lip 72 are measured by the distance measurement circuit 380 from the reflected light received from the lip 72 at the target mark projection position 73 transmitted by the target marker 370. Measure the distance between The measured distance data is provided to the camera control circuit 85. The camera control circuit 85 generates an aperture value for an appropriate depth of field to the aperture signal generation circuit 86 and the focus / focus lock setting signal generation circuit 841 based on the distance data, and controls the aperture value corresponding to the aperture value. Lock the focus within the depth of field (fix the focus).

  At this time, taking into account that the front depth of field is shallower than the rear depth of field, by fixing the focus to the rear end side between the front end and the rear end of the depth of field, the fineness of the treatment instrument can be improved. The range of movement can also be increased. In the present embodiment, correlation data between the depth of field and the brightness of the aperture chair and the camera lens is stored in the camera control circuit 85 as a look-up table.

  FIG. 2 is a view for explaining the depth of field of the camera, and shows the relationship between the focal depth of the lens 26 and the depth of field at a certain aperture value. For simplicity, the brightness of the lens and the illuminance of the subject are not taken into account. From this figure, by setting the aperture value so that the far end of the rear depth of field becomes the deep part of the oral cavity, the movement of the surgical instrument and the like on the optical axis of the camera together with the treatment point (target part for medical treatment) is determined. It can be seen that it is possible to shoot in vivid detail.

  FIG. 3 is a schematic diagram illustrating a specific configuration example 1 of the dental treatment situation imaging system according to the present invention. In this configuration example 1, the light / camera unit 20 is attached to the telescopic pole 80 erected on the support base 82 with casters, and the operator (the surgeon or the like) moves to a necessary location (a position facing the patient's face or the like). This allows the user to perform shooting operations.

  The light / camera unit 20 is attached to the telescopic pole 80 by an articulated arm 81, and is laterally (the patient's face horizontal direction: cleft lip direction) XX and vertical direction (the patient's facial vertical direction: nose bridge) by the handle 22. Length adjustment) Y-Y, panning direction θ-θ, tilting direction φ-φ, and front-back direction (circled circles indicate front side, crosses circled indicate rear side) Has become easier.

  A bracket on which the smartphone 83 can be installed is provided on the telescopic pole 80 so that an operator can perform a video shooting operation. The smartphone 83 may be operated by the operator while holding it. The smartphone 83 and the light / camera unit 20 are connected to the communication / data processing circuit 40 of the photographing control circuit 84 via a wireless communication network 87 or a wire, and perform transmission / reception of video and transmission / reception of control data. Also, communication can be performed with a dental care chair unit 1 described later.

  FIG. 4 is a perspective view illustrating a configuration example 1 of a light camera unit constituting the dental treatment situation imaging system according to the present invention, which can be used as the light camera unit 20 shown in FIG. The schematic structure is almost the same as that described in FIG. The light / camera unit 20 is provided with an operating light 24 on the inner periphery of the front surface of the frame-shaped housing 23. In this configuration example, the operating light 24 is composed of a large number of LEDs.

  A camera 25, an operating light 24, and a target marker 370 driven by an actuator 381 are provided in the frame-shaped housing 23. The actuator is not shown. The camera 25 has a lens 26 and an aperture 39. The lens 26 and the aperture 39 have been described with reference to FIG. A photographing control circuit 84 is housed inside the frame-shaped housing 23. In this example, the photographing light 27 is attached around the lens 26, but this is not essential.

  A handle 22 is fixed to the frame-shaped housing 23, and is attached to an open arm end of the Y-shaped bracket 21 by a vertically movable support portion 28. The base of the Y-shaped bracket 21 is a left-right and inclined rotation support portion. At 29, it is attached to the end of the articulated arm shown in FIG.

  FIG. 5 is a front view illustrating a configuration example 2 of the light / camera unit constituting the dental treatment situation imaging system according to the present invention. In this configuration example, a commercially available digital camera 25 is loaded on the frame housing 23. Other configurations are the same as those in FIG.

  FIG. 6 shows a configuration example 3 of the light / camera unit constituting the dental treatment situation imaging system according to the present invention, in which the camera shown in FIG. 5 uses a 3D adapter lens 260.

  FIG. 7 is a front view illustrating a configuration example 4 of a light / camera unit included in the dental treatment situation imaging system according to the present invention. In this configuration example, two cameras (right camera 251 and left camera 252) are loaded inside the frame-shaped casing 23, and a target camera 370 for 3D imaging in which a target marker 370 is installed between the two cameras. Is composed.

  In this configuration example, since the combined optical axis of the 3D video shooting by the right camera 251 and the left camera 252 substantially coincides with the optical axis of the target marker 370, the control of the light projection direction of the target marker of the target marker 370 described with reference to FIG. Is basically unnecessary, and only the focus lock adjustment of both cameras is necessary (two routes of the focus / focus lock setting signal generation circuit described in FIG. 1 are prepared). However, for example, in the case of side-by-side 3D imaging using left and right parallax, it is necessary to prepare a monitor of the same type. By displaying the left and right images in parallel on a remote monitor described later, a general-purpose monitor (2D monitor) can be used as it is.

  FIG. 8 is a front view illustrating a configuration example 5 of the light / camera unit constituting the dental treatment situation imaging system according to the present invention. In this configuration example, the camera 25 and the target marker 370 are housed in a central portion of the frame-shaped housing 23 so as to be vertically overlapped. Here, the camera 25 employs a small digital camera (SoC image sensor) in which a camera control circuit is incorporated in a lens unit also incorporated in a smartphone or the like.

  In this configuration example, since the deviation between the optical axis of the camera and the optical axis of the target marker 370 is small, the movement of the target mark on the lip 72 of the patient's face 71 is small, and the operation becomes easy.

  FIG. 9 is a schematic view illustrating the adjustment of the light projection position of the target marker when the target marker is not on the optical axis of the camera in the first embodiment of the dental treatment situation imaging system according to the present invention. FIG. 1A is an explanatory view of an optical system, FIG. 1B is an explanatory view of an adjustment direction of light projection of a target marker 370 (described in FIG. 1), and FIG. 1C is a view of a camera lens and a target marker. FIG. 4D is an explanatory diagram of a state in which focus is locked on a focus position (focus position) of the patient's face.

  Q0 shown in FIG. 9A is a front view (FIG. 9D) as viewed from the camera 25 side in a state where the target mark 73 overlaps the position 74 to be focused. The distance is L1. Assuming that the distance between the camera and the focusing position when the imaging system described in FIG. 3 is moved close to the patient is L2, the target mark 73 is shifted from the position 74 to be focused as shown in Q1. Position.

  The focus / focus lock setting signal generation circuit 841 shown in FIG. 1 provides the actuator 381 with the drive signal shown in FIG. 9B based on the target marker position adjustment instruction from the smartphone 83 on which the above state is displayed. Then, the directional position of the target marker 370 is adjusted, and the same operation as Q0 in FIG. When a state similar to that of Q0 is obtained, a focus lock signal is given to the camera.

  According to the present embodiment, it is possible to reproduce and display a video of the target part of the dental treatment and the operating status of the treatment tool as a high-definition video on the same screen of the monitor with a very easy operation.

  FIG. 10 is a functional block diagram illustrating a second embodiment of the dental treatment situation imaging system according to the present invention. In the present embodiment, one target marker 370 described in the first embodiment is arranged above and below the camera 25. The target markers 370a (upper) and 370b (lower) are adjusted such that the target mark projection positions 73a and 73b projected on the face 71 by the actuators 381a and 381b overlap on the target portion (lip). . That is, the target mark projection positions 73a and 73b are adjusted by an adjustment signal from the camera control circuit 85 generated on the display screen of the smartphone 83 in accordance with the drag of the operator's finger 831. Other configurations are the same as those in FIG.

  The distance between the camera 25 and the target part (lip) is measured by the distance measuring circuit 380 using only one target marker 370a in the same manner as in the first embodiment. Based on the distance measurement result, a focus signal is given to the camera 25 to perform focus adjustment, and in a state where the patient's mouth is opened, the center of the depth of field according to the aperture value (preferably, slightly behind (rearward than the center) The focus is locked to the depth of field side.By operating the distance measuring circuit 380 with the patient's mouth opened, more precise focus locking can be performed.

  The focus lock signal can be automatically output by the focus / focus lock setting signal generation circuit 841 based on the measurement completion signal of the distance measurement circuit 380, but the measurement result is displayed on the smartphone, and the operator accordingly displays the focus on the smartphone screen. An output instruction may be given to the focus / focus lock setting signal generation circuit 841. Each procedure is stored in the memory of the information processing chip included in the camera control circuit 85. The same applies to the first embodiment and other embodiments described later.

  FIG. 11 is an explanatory diagram of an example of adjusting the light projection position of the target marker when the target marker is not on the optical axis of the camera in the second embodiment of the dental treatment situation imaging system according to the present invention. Note that L0, L1, and L2 shown as distances between the camera (image forming surface: image sensor light receiving surface) and the target portion (lip) simulate the focus distance of the camera lens, and are between the camera and the face (target portion). It does not represent the actual distance of

  Reference numeral 75 indicates the optical axis of the camera (lens). One target marker 370a and the other actuator 381b provided in the second embodiment project target marks 73a and 73b of different hues on the patient's face 71. Although it is important to avoid the projection position from the position of the patient's eye, it is possible to avoid damage to the eye due to the target mark by attaching the eye mask to the patient. In particular, attention should be paid to the case where a laser (LED) is used as the light source of the target mark.

  In this embodiment, the projection light of one target marker 370a and the projection light of the other target marker 370b are set to different colors, but they are preferably colored lights having a complementary color relationship to each other. For example, the projection light of one target marker 370a is set to red, and the projection light of the other target marker 370b is set to blue-green for projection. The state of L1 in FIG. 11 is a so-called front pin, and the target mark 73a of the target marker 370a on the face 71 is below the target mark 73b of the target marker 370b. In the figure, the target mark 73a and the target mark 73b partially overlap. The overlapping part is white due to overeating and mixing.

  The state of L2 in FIG. 11 is a so-called rear focus, and the target mark 73a of the target marker 370a on the face 71 is above the target mark 73b of the target marker 370b. Similarly, the target mark 73a and the target mark 73b partially overlap, and the overlapping portion is white. Note that the hues of the target mark 73a and the target mark 73b are not necessarily limited to those having complementary colors. What is necessary is just to be able to identify the hue change in a state where the two overlap.

  As described above, the operator operates the two target mark projection positions 73a and 73b of the face displayed on the screen of the smartphone 83 so as to overlap on the lips of the patient using fingers. The state L <b> 0 in FIG. 11 indicates a focused state, and the entire target mark 73 a of the target marker 370 a on the face 71 is white due to the overlap of the target marker 370 b. The lower side of FIG. 11 shows the overlapping state of the target marks 73a and 73b viewed from the direction B in the figure. The upper side of FIG. 11 is a simulated view of the overlapping state of the target marks 73a and 73b when the face is viewed from the side, and the two target marks are shifted back and forth on the optical axis for easy understanding. Needless to say, there is actually no such shift.

  FIG. 12 is a schematic diagram illustrating a specific configuration example 2 of the dental treatment situation imaging system according to the present invention. In this configuration example, the one shown in FIG. 4 is employed as the light camera unit 20 of the dental care chair unit 1 described in FIG. A smartphone 83 similar to that shown in FIG. 3 is attached to the movable pole 10. The operation of the smartphone 83 held by the operator during use of the present system is the same as in FIG.

  The basic configuration of the dental care chair unit 1 is the same as that of FIG.

  The operator information terminal 83 is capable of communicating data including video with the system control circuit 50 of the dental care chair unit 1, and is provided with an imaging control circuit 84 on a video monitor 58 provided in the dental care chair unit 1. Then, the captured image of the camera 25 can be displayed from the external output circuit 38 via the system control circuit 50.

  Further, the image displayed on the image monitor 58 can also be displayed on the remote monitor 580 connected to the dental care chair unit 1.

  The camera 25 included in the light camera unit 20 can provide a realistic image by using a smartphone or monitor as a device capable of displaying 3D images with naked eyes as a 3D photographing camera. Although the anaglyph method can be used, the handling is complicated and undesired because red and blue glasses are required.

  As described above, in this configuration example, in addition to the monitor 58 installed in the dental care chair unit 1, an image captured by the light camera unit 20 is required on another monitor 580 installed in a remote place. It is possible to transfer and display according to. The transfer of the image to the monitor 580 is not limited to the cable as shown, but may be transmission via a LAN or any other method.

  According to this embodiment as well, it is possible to reproduce and display a video of the target part of the dental treatment and the operation status of the treatment tool as a high-definition video on the same screen of the monitor by a very easy operation.

  According to the present invention described in the above-described embodiment, an image during treatment is taken, and the state of the treatment is displayed on the monitor as a live image together with the operation of the treatment tool possessed by the dentist and the target site, and the actual state of the treatment is displayed. Can be confirmed by the surgeon (also referred to as an operator, such as a dentist or dental hygienist), or can be shown to the surrounding medical staff (attendant) such as a resident, thereby contributing to the advancement of treatment technology. .

  Further, by providing the monitor to an attendant or the like on another monitor installed in a separate room or the like, it is possible to increase the trust of the medical staff. Then, by recording such a video, and reproducing and verifying the video at a later date, it is possible to help the surgeon performing the surgery to improve his / her skills.

  In the above-described first and third embodiments, the present invention is applied to an imaging system for mainly capturing an image during treatment and displaying it on a monitor online. On the other hand, in the third and fourth embodiments described below, mainly a predetermined still image is easily photographed using a part of the system of the above-described embodiment.

  This embodiment can be basically realized by using a part of the configuration shown in FIG. That is, in the field of dental care, the 5-sheet method, the 9-sheet method, and the like in a state in which the distance between the camera and the subject (a specific part in the oral cavity of the patient) is defined (within a predetermined angle of view). It is required that a predetermined image (such as a still image or a moving image) be taken in the oral cavity. An object of the present invention is to provide a dental treatment situation imaging system that facilitates proper focusing at a predetermined angle of view by using only an autofocus function of a camera to be used, only by adjusting a distance between a target position of the dental treatment and a camera position. .

  This embodiment includes a camera 25 having an autofocus and a variable focus function and a variable aperture function based on an external instruction signal. The camera 25, the surgical light 24 for illuminating the target part, and the target marker 370 shown in FIG. In terms of appearance, the light camera unit 20 is a light camera unit 20 in which a shooting control circuit 84 is incorporated.

  The photographing control circuit 84 has a camera control circuit 85 and an operating light controller 240. Also, a smartphone (information terminal for operator) 83 for displaying a photographing signal of the camera 25 is connected. The camera 25 is set to the auto focus mode. The mode setting may be performed from the smartphone 83 through the camera control circuit 85 and the focus / focus lock setting signal generation circuit 841, or may be performed directly using the mode setting dial of the camera 25 body.

  The projection position 73 of the target mark from the target marker 370 becomes a predetermined position (the angle of view of the predetermined image) in advance (the position of “Q0” in FIG. 9, ie, the projection position relationship shown in FIG. 9D). The operator moves the light / camera unit 20 toward the target part, and stops the movement of the light / camera unit 20 at the predetermined position.

  When the movement is stopped, the auto-focus function of the camera 25 operates to capture an image. The shooting result is stored in the memory of the camera. A series of these operations can be observed with the smartphone 83. However, if the operation of stopping the movement of the light / camera unit 20 at the predetermined position is performed only by the operator's eyes, the smartphone may not be provided. When the projection position 73 of the target mark is visually observed, the actuator 381 is not required.

  That is, the projection position 73 of the target mark irradiated from the target marker 370 is set in advance on the optical axis 75 (FIG. 9) of the camera 25 passing through the desired position (the lip portion of the patient or the like). By moving the light / camera unit 20 and stopping the movement of the light / camera unit 20 in a state where the projection position 73 of the target mark overlaps a desired position (target part), the auto focus function of the camera 25 operates. When the focus point is locked, the video is shot. In this embodiment, the function of the distance measuring circuit 380 in FIG. 1 is locked.

  Thus, only by adjusting the distance between the target part of the dental treatment and the camera position, it is possible to obtain a required image that facilitates proper focusing at a predetermined angle of view using the autofocus function of the camera used. .

  This embodiment can be basically realized by using a part of the configuration shown in FIG. That is, the light / camera unit 20 includes a camera 25 having an autofocus and a variable focus function and a variable aperture function based on an external instruction signal, an operating light 24 illuminating a target portion, and a target mark having a different color from the target portion. Are provided with first and second target markers 370a and 370b, and actuators 381a and 381b. A camera control circuit 85 and a photographing control circuit 84 including an operating light controller 240 are integrally incorporated in the frame-shaped casing 23 (see FIG. 4) of the light / camera unit 20.

  A smartphone (information terminal for operator) 83 for displaying a photographing signal of the camera 25 is connected. The camera 25 is set to the auto focus mode. The mode setting may be performed from the smartphone 83 through the camera control circuit 85 and the focus / focus lock setting signal generation circuit 841, or may be performed directly using the mode setting dial of the camera 25 body.

  One target marker (370a, 370b) is provided above and below the camera lens. The projection positions 73a and 73b of the target marks from these two target markers 370a and 370b are set in advance to a predetermined position (a predetermined image angle of view) (the position of "Q0" in FIG. 9, that is, ( The projection position relationship shown in d) is set in advance. The operator moves the light / camera unit 20 toward the target site, and stops the movement of the light / camera unit 20 at the predetermined position.

  When the movement is stopped, the auto-focus function of the camera 25 operates to capture an image. The shooting result is stored in the memory of the camera. A series of these operations can be observed with the smartphone 83. However, if the operation of stopping the movement of the light / camera unit 20 at the predetermined position is performed only by the operator's eyes, the smartphone may not be provided. When the projection position 73 of the target mark is visually observed, the actuators 381a and 381b are not required.

  That is, the target mark projection positions 73a and 73b irradiated from the target markers 370a and 370b are set in advance so as to be on the optical axis 75 (FIG. 9) of the camera 25 passing through a desired position (the lip portion of the patient or the like). deep. By moving the light / camera unit 20 and stopping the movement of the light / camera unit 20 in a state where the projection positions 73a and 73b of the target mark overlap with a desired position (target part), the auto-focus function of the camera 25 is achieved. Operates, focus point locks and shoots video. In this embodiment, the function of the distance measuring circuit 380 in FIG. 10 is invalidated or removed.

  Thus, only by adjusting the distance between the target part of the dental treatment and the camera position, it is possible to obtain a required image that facilitates proper focusing at a predetermined angle of view using the autofocus function of the camera used. .

  The distance at which the target mark projection positions 73a and 73b emitted from the first and second target markers 370a and 370b coincide with each other on the target portion is a predetermined angle of view and an imaging distance of a predetermined imaging pattern.

  Embodiments 3 and 4 described above are not limited to locking some functions of FIGS. 1 and 2. That is, the light / camera unit 20 and the photographing control circuit 84 can be configured as a special-purpose device only with the functions used in the above description.

  According to the third and fourth embodiments, a required image in which appropriate focus (focusing) work is easily performed at a predetermined angle of view by using the autofocus function of the camera to be used only by adjusting the distance between the target part of the dental treatment and the camera position. It is possible to greatly reduce the photographing work of the operator.

1. Dental care chair unit 2. Chair (seat)
3. Backrest 4. Footrest 5, Headrest 6, Armrest 7, Elevating pedestal 8, Spitton 9, Main pole 10, Movable pole 11, Arm 12, Operation panel connecting beam 13, Table 14. Tray 15 Operation panel 16 Handpiece holder 17 Handpiece 18 Monitor (display)
19 foot switch 20 light camera unit 21 bracket 22 handle 23 frame housing (frame camera storage unit)
24, operating light 240, operating light controller 25, camera 251, right camera 252, left camera 26, camera lens 260, 3D adapter lens 27, shooting light 28, up and down Movable support 29, left and right and inclined rotation support 31, inner housing 32, outer housing 33, optical system 34, image sensor 35, automatic focusing mechanism 36, automatic composition (angle of view) Adjustment mechanism 370, 370a, 370b Target marker 38 External output circuit 380 Distance measuring circuits 381, 381a, 381b Actuator 39 Aperture 40 Photographic signal processing circuit 40 Light camera subunit 42, communication / data processing circuit 50, system control circuit 51, central control section 511, composition determination circuit 512, focus determination circuit 513, arithmetic circuit 14 · chairs attitude control circuit 515 · integrated control circuit 52 · memory 521 · ROM
522 RAM
53 monitor control circuit 54 printer control circuit 55 buzzer control circuit 56 buzzer 57 printer 58 monitor 580 remote monitor 60 dental treatment unit 61 chair control circuit 63 Foot switch control circuit 621, light, camera unit power switch 622, camera unit power switch 623, camera mode changeover switch 624, guide light switch 625, main power switch 626, dental unit control switch group 70. Patient 71, face 72, target area (lip)
73 (73a, 73b) target mark projection position 74 focus position (focus position)
80 Telescopic pole 81 Articulated arm 82 Support base 83 (with casters) Information terminal for operator (smartphone, tablet, etc.)
831 ··· Finger 832 ··· Touch panel input data processing circuit 833 ··· Aperture setting circuit (depth of field setting)
834 communication and data processing signal processing circuit 84 shooting control circuit 841 focus focus lock setting signal generation circuit 85 camera control circuit 86 aperture signal generation circuit 87 communication network (Internet, Bluetooth, etc)

Claims (18)

A dental treatment situation imaging system for displaying an image of a target part of dental treatment and a treatment tool operation state on the same screen of a monitor in a high-definition image,
A camera having a variable focus function and a variable aperture function by an auto-focus and external instruction signal, a target marker for irradiating an optical target mark on a target portion of dental treatment, and receiving reflected light from a projection position of the target portion, and A light camera unit including an operating light that illuminates the target site,
A shooting control circuit including a distance measurement circuit, a camera control circuit, an operating light controller, an aperture signal generation circuit, and a focus / focus lock setting signal generation circuit;
An information terminal for an operator that displays an image signal of the camera and gives an instruction to the focus / focus lock setting signal generation circuit,
The focus / focus lock setting signal generation circuit is configured to control the camera according to a distance to the target portion obtained by the distance measurement circuit based on reflected light of the target marker under an instruction from the operator information terminal. Locking the focus point of the camera near the boundary between the front depth of field and the rear depth of field depending on the brightness of the lens and the aperture value generated by the aperture signal generation circuit, and capturing and displaying the video. A treatment situation imaging system characterized by the following. A dental treatment situation imaging system for displaying an image of a target part of dental treatment and a treatment tool operation state on the same screen of a monitor in a high-definition image,
A camera having an autofocus and a variable focus function and a variable aperture function by an external instruction signal, a first target marker and a second target marker for irradiating target marks of different colors in the same pattern, and a target portion of the dental treatment A light / camera unit with an operating light for illuminating the
A photographing control circuit including a distance measuring circuit, a camera control circuit, an operating light controller, an aperture signal generating circuit, and a focus / focus lock setting signal generating circuit; and displaying a photographing signal of the camera and the focus / focus lock setting signal. An information terminal for the operator that gives instructions to the generation circuit,
The focus / focus lock setting signal generation circuit, based on the fact that the projection position of the first target marker and the projection position of the second target marker match on the target site under an instruction from the operator information terminal And the boundary between the depth of field and the depth of field depending on the brightness of the lens of the camera according to the distance to the target portion obtained by the distance measurement circuit and the aperture value generated by the aperture signal generation circuit. A treatment situation imaging system, wherein a focus point of the camera is locked in the vicinity to capture the image. A dental treatment situation imaging system for displaying an image of a target part of dental treatment and a treatment tool operation state on the same screen of a monitor in a high-definition image,
A camera having an autofocus and a variable focus function and a variable aperture function by an external instruction signal, an operating light for illuminating a target site, a camera control circuit, and a light / camera unit including an imaging control circuit having an operating light controller,
An information terminal for an operator that displays a shooting signal of the camera,
The operator moves the light camera unit toward the target site, locks the camera focus point on the target site by stopping the movement of the light camera unit at a desired position, and shoots an image, A therapeutic situation imaging system characterized by displaying.   The light / camera unit is provided with a target marker, the desired position is set in advance to a projection position of a target mark irradiated from the target marker to the desired position, and the projection position of the target mark is set to the target portion. The treatment according to claim 3, wherein the movement of the light / camera unit is stopped in an overlapping state, and an image is captured and displayed on the target portion by locking a focus point by an autofocus function of the camera. Situation imaging system. A dental treatment situation imaging system for displaying an image of a target part of dental treatment and a treatment tool operation state on the same screen of a monitor in a high-definition image,
A camera having an autofocus and a variable focus function and a variable aperture function by an external instruction signal, an operating light for illuminating a target part, and first and second target markers for irradiating target marks of different colors to the target part Light camera unit with
A camera control circuit, and a shooting control circuit including an operating light controller,
An information terminal for an operator that displays a shooting signal of the camera,
An operator moves the light / camera unit and moves the camera with the stop of the light / camera unit at a distance at which target mark projection positions emitted from the first and second target markers coincide with each other on the target portion. Wherein the autofocus point is locked, and the image is taken in accordance with an instruction of the operator from the operator information terminal.   The distance at which the target mark projection positions radiated from the first and second target markers coincide on the target portion is a predetermined angle of view and an imaging distance of a predetermined imaging pattern. The treatment situation imaging system according to claim 5.   The target marker includes an actuator that adjusts a target mark projection position on the target portion, and irradiates the target mark such that the target mark is radiated to a predetermined position of the target portion under an instruction from the operator information terminal. The treatment situation imaging system according to claim 1 or 4, wherein the position is adjusted. The first target marker includes a first actuator that adjusts a projection position of a first target mark at a predetermined position on the target site, and the second target marker includes a first actuator that adjusts a projection position of the target target at a predetermined position on the target site. A second actuator for adjusting a second target mark projection position,
The first target mark projection position and the second target mark projection position irradiated on the target site under instructions from the operator information terminal are adjusted so as to match at a predetermined position of the target site. The treatment situation imaging system according to claim 2 or 5, wherein:   9. The imaging control circuit according to claim 1, further comprising an external output circuit, wherein an image captured by the camera can be displayed on a remote monitor at a location away from a treatment site via the external output circuit. The treatment situation imaging system according to any one of the above.   The focus / focus lock setting signal generation circuit based on the autofocus and the external instruction signal controls the aperture value given to the aperture signal generation circuit in accordance with the degree of fine display required for the target portion of the treatment. The treatment situation imaging system according to claim 1, wherein the depth of field is changed.   The said operator information terminal is provided with the touchscreen which has a screen direct input function, and performs adjustment which superimposes the image of the said target mark projection position on the image of the predetermined position on the said target area | region. The treatment situation imaging system according to any one of the above.   A multi-joint equipped with a telescopic pole planted with a lower end held on a movable support base, and the light / camera unit having one end supported on the upper end of the telescopic pole and the other end provided with the photographing control circuit The treatment situation imaging system according to claim 1, further comprising an arm, wherein an imaging position of a camera of the light camera unit with respect to the target portion is adjustable.   The treatment situation imaging system according to claim 12, further comprising the operator information terminal that controls an operation of the light / camera unit including the imaging control circuit.   The treatment situation imaging system according to claim 12, wherein the operator information terminal is capable of communicating data including an image with a system control circuit of the dental care chair unit.   The dental care chair unit includes a monitor, the imaging control circuit includes an external output circuit, and a captured image of a camera included in the light camera unit can be displayed on the monitor through the external output circuit. The treatment situation imaging system according to claim 13 or 14, wherein:   The treatment status imaging system according to claim 14, wherein the dental care chair unit includes a monitor, and an image displayed on the operator information terminal can be displayed on the monitor.   17. The treatment situation imaging system according to claim 15, wherein a remote monitor is connected to the dental care chair unit, and an image displayed on the monitor can be displayed on the remote monitor. The treatment situation imaging system according to any one of claims 1 to 17, wherein a camera included in the light camera unit is a 3D imaging camera.

Images