JP2018201574A - Observation imaging device for forehead band - Google Patents

Abstract

To provide an observation imaging device for a forehead band in which an optical axis of a camera, an optical axis of a lighting fixture, and a visual axis of an operator match by only attaching the camera and the lighting fixture to a forehead band, which has a simplified structure and can be inexpensively provided.SOLUTION: There is provided an observation imaging device for a forehead band comprising a video camera 14 and a lighting fixture 15, in which a housing of the lighting fixture 15 is formed into a cylindrical shape with a size at which visual axes of both eyes are not disturbed when the housing is arranged between both eyes of an operator 10 by a forehead band 11. The video camera 14 is arranged on a center position of the housing of the lighting fixture 15, and between an outer periphery of the video camera 14 and an inside of the housing, an LED light emission element 25 for radiating a subject 38 on the optical axis of the video camera 14 is provided. The lighting fixture 15 has a lens plate 16 on which a condenser lens part 22 is provided on an inside front end part of the housing, and has a circuit board 26 on which the LED light emission element 25 is provided on an inside rear end part of the housing.SELECTED DRAWING: Figure 1

Description

  The present invention is an imaging device that is attached to a forehead, and has a narrow field of view such as the eardrum, nasopharynx, larynx, a visual axis by both eyes, a camera axis by a video camera, and an illumination optical axis of a lighting fixture. Is related to an observation imaging device for a forehead for observing and imaging in such a manner that they match.

  The apparatus described in the cited document 1 is the same as the video camera on the optical axis of the camera connecting the affected part and the video camera in the observation device for the forehead attached with a small video camera for imaging the affected part. A lighting fixture that illuminates the affected area is provided on the camera housing with a half mirror for observing the image, and the lighting optical axis of the lighting fixture is set as close as possible to the camera optical axis. The band observation viewing device is provided so as to be movable and adjustable from the approximate center position of the left eye and right eye to at least the left eye visual axis and / or the right eye visual axis. Further, there is described an example in which a cylindrical portion is provided protruding from the camera optical axis, and a reflection mirror or a plurality of lighting fixtures are provided on the outer periphery of the cylindrical portion.

Japanese Unexamined Patent Publication No. 07-1000014

Of the image signals of the affected area, align the image based on the signal that has passed through the half mirror while viewing with one eye, and the signal reflected by the half mirror is further totally reflected by the reflection mirror and connected to the video camera. Therefore, the visual axis seen with one eye and the optical axis of the camera can be exactly matched, but the visual axis seen with both eyes and the optical axis of the camera do not necessarily match. There is a problem that it is troublesome to adjust the axis and the camera optical axis to coincide. In addition, since the lighting fixture formed separately from the video camera housing is attached to the video camera housing with a mounting piece, there is a problem that the illumination optical axis and the camera optical axis cannot be accurately matched. It was.
In addition, since the lighting fixture is mounted along the video camera, the entire structure is complicated and expensive, and the adjustment of the optical axis is troublesome.

  The present invention provides an observation imaging apparatus for a forehead that can be provided at a low cost by matching the optical axis of the camera, the optical axis of the luminaire, and the visual axis of the operator only by attaching them to the forehead. It is intended.

The observation imaging apparatus for the forehead according to the present invention is
In the observation imaging apparatus for the frame with the video camera 14 and the lighting fixture 15,
When the housing of the luminaire 15 is arranged between the eyes of the surgeon 10 by the frame 11, it has a cylindrical shape that does not obstruct the line of sight of both eyes. The video camera 14 is disposed, and an LED light emitting element 25 that irradiates a subject 38 on the optical axis of the video camera 14 is provided in a gap between the outer periphery of the video camera 14 and the inside of the housing.

  The luminaire 15 is configured by providing a lens plate 16 having a condensing lens portion 22 formed at the inner front end of the housing and a circuit board 26 having an LED light emitting element 25 mounted at the inner rear end of the housing. .

  The housing of the lighting fixture 15 adjusts the focal length by fitting the front hood 17 provided with the lens plate 16 at the front end and the rear hood 18 provided with the circuit board 26 at the rear end so as to be able to advance and retreat.

  It is desirable that a plurality of condensing lens portions 22 formed on the lens plate 16 and a plurality of LED light emitting elements 25 mounted on the circuit board 26 correspond to each other at substantially the same central angle.

  The cylindrical video camera 14 is fitted and fixed to a camera insertion hole 23 formed at the center of the lens plate 16 and a camera holding hole 27 formed at the center of the circuit board 26.

  The lighting fixture 15 can be provided with a reflector on the back of the LED light emitting element 25 instead of the condensing lens portion 22 at the inner front end of the housing.

According to invention of Claim 1,
In the observation imaging device for the frame with a video camera and lighting equipment,
The housing of the lighting device has a cylindrical shape that does not obstruct the line of sight of both eyes when placed between the surgeon's eyes by a frame, and the video camera is placed at the center of the housing of the lighting device. Since the LED light emitting element for irradiating the subject on the optical axis of the video camera is provided in the gap between the outer periphery of the video camera and the inside of the housing, the visual axis and the camera when the subject is viewed with both eyes The optical axis and the illumination optical axis can be exactly matched. In addition, since the video camera is arranged at the center position of the cylindrical housing of the lighting fixture, the structure is simple and the optical axes coincide with each other accurately. Furthermore, the housing of the lighting device can be observed without interfering with the line of sight of both eyes when it is placed between the eyes of the surgeon with a frame.

According to invention of Claim 2,
Since a lens plate having a condensing lens portion is provided at the inner front end of the housing of the lighting fixture, and a circuit board on which an LED light emitting element is mounted is provided at the inner rear end of the lighting fixture, the lighting fixture and the video camera are provided. An integrated compact configuration can be obtained.

According to invention of Claim 3,
Since the housing of the lighting fixture has a front hood provided with a lens plate at the front end and a rear hood provided with a circuit board at the rear end movably fitted, it is possible to easily focus the illumination light beam.

According to invention of Claim 4,
Since the condensing lens part formed on the lens plate and the LED light emitting elements mounted on the circuit board are provided in correspondence with each other at substantially the same central angle, the object should be irradiated with the same amount of light from the entire circumference of the video camera. Can do.

According to invention of Claim 5,
Since the cylindrical video camera is fitted and fixed in the camera insertion hole formed in the center of the lens plate and the camera holding hole formed in the center of the circuit board, the video camera can be correctly attached to the center of the housing of the lighting fixture.

According to the invention described in claim 6,
Since a circuit board on which an LED light emitting element is mounted is provided at the inner rear end of the lighting fixture, and a reflector is provided on the back of the LED light emitting element, the illumination light beam can be placed in a predetermined position without providing a lens plate. it can.

It is sectional drawing which shows Example 1 of the observation imaging device for forehead | heads by this invention. It is a left view in FIG. (A) is a front view of the lens plate 16 in FIG. 1, and (b) is a sectional view of FIG. 3 (a). (A) is a front view of the circuit board 26 which attached the LED light emitting element 25 in FIG. 1, (b) is sectional drawing of Fig.4 (a). It is a block diagram of the control circuit of the observation imaging device for the frame according to the present invention. It is a top view for operation | movement description of FIG. (A), (b), and (c) are side views of different examples of the observation device for the frame according to the present invention, and (d) is a plan view of the different examples of the observation imaging device for the frame according to the present invention. .

The observation imaging apparatus for the forehead according to the present invention is
It has a video camera 14 and a lighting fixture 15.
The housing of the luminaire 15 has a cylindrical shape with a size that does not obstruct the line of sight of both eyes when placed between the eyes of the operator 10 by the frame 11. The video camera 14 is arranged at the center position of the housing of the lighting fixture 15. An LED light emitting element 25 that irradiates a subject 38 on the optical axis of the video camera 14 is provided in a gap between the outer periphery of the video camera 14 and the inside of the housing.

The luminaire 15 is provided with a lens plate 16 having a condensing lens portion 22 formed on the inner front end of the housing, and a circuit board 26 on which an LED light emitting element 25 is mounted on the inner rear end of the luminaire 15.
Instead of the lens plate 16 on which the condensing lens part 22 is formed, a reflector may be provided on the back part of the LED light emitting element 25.

The housing of the luminaire 15 has a front hood 17 provided with a lens plate 16 at the front end and a rear hood 18 provided with a circuit board 26 at the rear end so as to be able to move forward and backward to focus the optical axis. To do.
A plurality of condensing lens portions 22 formed on the lens plate 16 and a plurality of LED light emitting elements 25 mounted on the circuit board 26 are provided in correspondence with each other at substantially the same central angle.
The cylindrical video camera 14 is fitted and fixed in a camera insertion hole 23 formed at the center of the lens plate 16 and a camera holding hole 27 formed at the center of the circuit board 26.

A first embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, 11 is a frame, and this frame 11 is attached to the head of the operator 10. The frame image observation and imaging device of the present invention is set to the frame 11 in a front / rear direction, an up / down direction, and a left / right direction through a universal joint 13.
The forehead observation imaging apparatus of the present invention comprises a lighting fixture 15 and a video camera 14 attached to the center of the lighting fixture 15.
The video camera 14 has a diameter of about 8 to 12 mm and a length of about 50 to 70 mm, and is a commercially available product with a high resolution in which a CCD and a lens are incorporated. The video camera 14 is provided with a lens diaphragm screw 31 and a lens lock screw 32, and a camera connector 40 connected to a camera cable at the base end is coupled to a camera controller 39 to be described later. The video camera 14 can adjust the focus by rotating the tip part forward and backward.

The housing constituting the lighting fixture 15 includes a cylindrical front hood 17 having both ends opened and a rear hood 18 having one end opened. The groove 20 fits forward and backward, and after focusing, is fixed with a fixing screw 21. The housing of the luminaire 15 has a cylindrical shape that does not obstruct the line of sight of both eyes when it is set between the eyes of the operator 10 by the frame 11. Assuming that the interval is about 60 to 70 mm, the diameter is about 35 to 45 mm and the length is about 50 to 55 mm.
A transparent and circular lens plate 16 is fitted into the front end opening of the front hood 17 and is fixed by a lens stopper 22a. As an example, as shown in FIG. 3, the lens plate 16 is formed with condensing lens portions 22 at intervals of a central angle of 120 degrees, and a camera insertion hole 23 is provided at the center.

  As shown in FIG. 4, a circuit board 26 is fixed to a rear end portion inside the rear hood 18 with a board holding screw 28. On this circuit board 26, LED light emitting elements 25 are mounted at intervals of a central angle of 120 degrees corresponding to the condenser lens portion 22, and a camera holding hole 27 is provided in the center. Further, a conductive wire insertion hole 29 is formed at the rear end of the rear hood 18 to draw out the camera cable of the video camera 14 and the lead wire of the LED light emitting element 25 to the outside.

The video camera 14 is fitted into the camera insertion hole 23 of the lens plate 16 and the camera holding hole 27 of the circuit board 26 in the lighting fixture 15, and the video camera 14 is positioned at the center of the lighting fixture 15. It is fixed with a plurality of camera holding screws 24.
A connecting ball 30 is attached to the outside of the rear hood 18, and the connecting ball 30 is attached to the support piece 12 inserted into the frame 11. It is fixed by adjusting the position vertically and horizontally.

  In FIG. 5, the camera cable of the video camera 14 is connected to a camera controller 39 by a camera connector 40. The camera controller 39 is provided with a camera operation button 41 for operating an image up and down, left and right, and operating an electronic zoom (enlargement and reduction), and further provided with a power button and the like. The camera controller 39 is connected to a display device 42 for an image monitor and an image capturing device 43 that captures an image. The image capturing device 43 is connected to a printer 45 through a personal computer 44 and a foot switch 46 for the operator 10. Further, an LED power source 47 for the LED light emitting element 25 is connected to the lighting fixture 15.

  The frame imaging device configured as described above is set in the frame 10 of the surgeon 10 with the position adjusted by the universal joint 13. When setting the observation and imaging device for the forehead, the video camera 14 is pointed toward the subject 38 and the position of the universal joint 13 is adjusted back and forth, up and down, and left and right, so that the video camera 14 has both the right eye 33 and the left eye 34. Position it in the center of the eye and as close to both eyes as possible. The tip of the video camera 14 is rotated to the right or left according to the distance L from the video camera 14 to the subject 38 to focus the image. This focusing can also be performed before wearing on the forehead band 11 of the surgeon 10 when the distance L is known in advance. The aperture is adjusted with the lens aperture screw 31 as necessary.

The illumination optical axis 35 of the luminaire 15 is set so as to intersect with the camera axis 36 of the video camera 14, but is fixed in order for the illumination optical axis 35 of the luminaire 15 to focus on the subject 38. The screw 21 is loosened, the protrusion 19 of the front hood 17 and the sliding groove 20 of the rear hood 18 are slid back and forth, the mutual position is adjusted, and the fixing screw 21 is fixed. When the precursor distance L is known in advance, this adjustment can also be performed before being attached to the frame 11 of the operator 10.
Then, when the surgeon 10 gazes at the subject 38 with both eyes, the image of the subject 38 by the right visual axis 48 of the right eye 33 and the left visual axis 49 of the left eye 34 coincides with the camera axis 36 of the video camera 14. It will be in the state.

  The distance L from the video camera 14 to the subject 38 is 230 to 300 mm when the subject 38 is the ear canal, 300 to 350 mm when the subject 38 is the nostril, and 350 to 450 mm when the subject 38 is the throat. The focal length of the video camera 14 and the lighting fixture 15 is adjusted according to the distance.

  The lighting device 15 correctly illuminates the subject 38 observed by the operator 10 with both the right eye 33 and the left eye 34 and captures it as an image, and displays it on the display device 42 via the camera controller 39. By looking at the displayed image, the camera operation button 41 adjusts the vertical and horizontal positions, enlarges / reduces, etc. The data captured by the camera controller 39 is further captured by the image capturing device 43 as necessary, and printed out by the printer 45 via the personal computer 44.

In the said Example, although the housing of the lighting fixture 15 was made into the cylindrical shape, it is not restricted to this, As shown to Fig.7 (a), it can be set as square cylinders, such as a hexagonal cylinder. As shown in FIG. 7B, a shape in which three cylindrical bodies matched to the shape of the condenser lens portion 22 are connected can be obtained. In addition, the number of condensing lens portions 22 is not limited to three, and as shown in FIG. 7C, the number of condensing lens portions 22 may be six, and the number of LED light emitting elements 25 may be six. Furthermore, the number of the condensing lens part 22 and the LED light emitting element 25 is not restricted to these examples.
In FIG. 7B, when the tip portions of the three cylindrical bodies are contracted to collect the light from the LED light emitting element 25 toward the camera shaft 36, the condenser lens portion 22 is omitted. Can do. In addition, when a reflector is provided behind the LED light emitting element 25, the lens plate 16 having the condenser lens portion 22 can be omitted.

  The diameter of the luminaire 15 is based on the premise that the distance between both eyes of the human is about 60 to 70 mm. However, in order to correspond to a person with a narrow gap between both eyes, as shown in FIG. The fifteen front hoods 17 can be formed in a conical cylinder shape within a range where the illumination optical axis 35 is not hindered.

  In the above embodiment, the video signal is sent from the camera controller 39 to the display device 42 in a wired manner in FIG. 5, but the present invention is not limited to this, and the camera controller 39 sends a wireless signal such as Wi-Fi to the display device 42. The video signal may be sent and displayed.

  DESCRIPTION OF SYMBOLS 10 ... Surgeon, 11 ... Frame, 12 ... Supporting piece, 13 ... Universal joint, 14 ... Video camera, 15 ... Lighting equipment, 16 ... Lens plate, 17 ... Front hood, 18 ... Rear hood, 19 ... Projection 20 ... sliding groove, 21 ... fixing screw, 22 ... condensing lens part, 23 ... camera insertion hole, 24 ... camera holding screw, 25 ... LED light emitting element, 26 ... circuit board, 27 ... camera holding hole, 28 ... Substrate holding screw, 29 ... lead insertion hole, 30 ... connecting ball, 31 ... lens aperture screw, 32 ... lens lock screw, 33 ... right eye, 34 ... left eye, 35 ... illumination optical axis, 36 ... camera axis, 37 ... External auditory canal, 38 ... subject, 39 ... camera controller, 40 ... camera connector, 41 ... camera operation button, 42 ... display device, 43 ... image capture device, 44 ... computer, 45 ... printer, 46 ... foot switch, 4 ... LED power supply, 48 ... Migishijiku, 49 ... Hidarishijiku.

The observation imaging apparatus for the forehead according to the present invention is
In the observation imaging device for the frame with a video camera and lighting equipment,
The housing of the lighting device has a cylindrical shape that does not obstruct the line of sight of both eyes when placed between the surgeon's eyes by a frame, and the video camera is placed at the center of the housing of the lighting device. An LED light emitting element for irradiating a subject on the optical axis of the video camera is provided in a gap between the outer periphery of the video camera and the inside of the housing,
The video camera has a cylindrical shape with a diameter of 8 to 12 mm and a length of about 50 to 70 mm.
The housing of the luminaire comprises a cylindrical front hood that is open at both ends, and a rear hood that is open at one end. , Fixed with fixing screws after focusing, diameter is about 35-45mm, length is about 50-55mm,
Provide a lens plate formed with a condensing lens part at the inner front end of the housing of the lighting fixture, and provide a circuit board on which an LED light emitting element is mounted at the inner rear end of the lighting fixture,
The condensing lens portion formed on the lens plate and the LED light-emitting elements mounted on the circuit board are provided corresponding to each other at a substantially equal central angle.
The cylindrical video camera is fitted and fixed in a camera insertion hole formed in the center of the lens plate and a camera holding hole formed in the center of the circuit board .

The front hood of the luminaire can be conical in order to accommodate people with a narrow distance between both eyes.

According to invention of Claim 1,
In the observation imaging device for the frame with a video camera and lighting equipment,
The housing of the lighting device has a cylindrical shape that does not obstruct the line of sight of both eyes when placed between the surgeon's eyes by a frame, and the video camera is placed at the center of the housing of the lighting device. An LED light emitting element for irradiating a subject on the optical axis of the video camera is provided in a gap between the outer periphery of the video camera and the inside of the housing,
The video camera has a cylindrical shape with a diameter of 8 to 12 mm and a length of about 50 to 70 mm.
The housing of the luminaire comprises a cylindrical front hood that is open at both ends, and a rear hood that is open at one end. , Fixed with fixing screws after focusing, diameter is about 35-45mm, length is about 50-55mm,
Provide a lens plate formed with a condensing lens part at the inner front end of the housing of the lighting fixture, and provide a circuit board on which an LED light emitting element is mounted at the inner rear end of the lighting fixture,
The condensing lens portion formed on the lens plate and the LED light-emitting elements mounted on the circuit board are provided corresponding to each other at a substantially equal central angle.
Since the cylindrical video camera is fitted and fixed to the camera insertion hole formed at the center of the lens plate and the camera holding hole formed at the center of the circuit board, the following effects are obtained.
(1) The visual axis of the subject viewed with both eyes, the camera optical axis, and the illumination optical axis can be accurately matched. In addition, since the video camera is arranged at the center position of the cylindrical housing of the lighting fixture, the structure is simple and the optical axes coincide with each other accurately. Furthermore, the housing of the lighting device can be observed without interfering with the line of sight of both eyes when it is placed between the eyes of the surgeon with a frame.
(2) Since a lens plate having a condensing lens portion is provided at the inner front end of the housing of the lighting fixture, and a circuit board on which an LED light emitting element is mounted is provided at the inner rear end of the lighting fixture, the lighting fixture and video It can be set as the compact structure which integrated the camera.
(3) The housing of the lighting fixture has a front hood provided with a lens plate at the front end and a rear hood provided with a circuit board at the rear end movably fitted so that the illumination light beam can be easily focused. Can be.
(4) Since the condensing lens portion formed on the lens plate and the plurality of LED light emitting elements mounted on the circuit board are provided in correspondence with each other at substantially the same central angle, the object can be captured with the same amount of light from the entire circumference of the video camera. Can be irradiated.
(5) Since the cylindrical video camera is fitted and fixed in the camera insertion hole formed in the center of the lens plate and the camera holding hole formed in the center of the circuit board, the video camera should be correctly attached to the center of the housing of the lighting fixture. Can do.

According to invention of Claim 2,
Since the front hood of the lighting fixture has a conical cylinder shape, it is possible to correspond to a person with a narrow interval between both eyes.

According to invention of Claim 3 ,
Since a circuit board on which an LED light emitting element is mounted is provided at the inner rear end of the lighting fixture, and a reflector is provided on the back of the LED light emitting element, the illumination light beam can be placed in a predetermined position without providing a lens plate. it can.

Claims (6)

In the observation imaging device for the frame with a video camera and lighting equipment,
The housing of the lighting device has a cylindrical shape that does not obstruct the line of sight of both eyes when placed between the surgeon's eyes by a frame, and the video camera is placed at the center of the housing of the lighting device. A frame image observation and imaging apparatus characterized in that an LED light emitting element for irradiating a subject on the optical axis of the video camera is provided in a gap between the outer periphery of the video camera and the inside of the housing.   The lens board which formed the condensing lens part in the inner front end part of the housing of a lighting fixture was provided, and the circuit board which mounted the LED light emitting element in the internal rear end part of the said lighting fixture was provided. Observation imaging device for frame.   3. A frame according to claim 2, wherein the housing of the lighting fixture is configured such that a front hood provided with a lens plate at a front end and a rear hood provided with a circuit board at a rear end are movably fitted. Observation imaging device.   4. The observation imaging apparatus for a forehead according to claim 2 or 3, wherein a plurality of condensing lens portions formed on the lens plate and a plurality of LED light emitting elements mounted on the circuit board are provided corresponding to each other at substantially the same central angle.   5. A frame video camera according to claim 3, wherein a cylindrical video camera is fitted and fixed in a camera insertion hole formed in the center of the lens plate and a camera holding hole formed in the center of the circuit board. .   The observation imaging apparatus for a forehead according to claim 1, wherein a circuit board on which an LED light emitting element is mounted is provided at an inner rear end of the lighting fixture, and a reflector is provided on a back part of the LED light emitting element.

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