JP2013248098A - Dental microscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dental microscope in which a surgical site is not easily seen even when irradiated with light having a predetermined wavelength blocked or reduced in order to prevent the filler from hardening at an unintended timing.
SOLUTION: A filter 31 for blocking or reducing light of a predetermined wavelength, an illuminating means 30 for irradiating light to the surgical part 50 through the filter, and an image processing means 25L for correcting the color tone of an image obtained by imaging the surgical part. , 25R, and display means 26L, 26R for displaying an image of the surgical site corrected by the image processing means, the image processing means supplementing light having a wavelength blocked or attenuated by the filter Thus, the color tone of the image is corrected.
[Selection] Figure 1

Description

  The present invention relates to a dental microscope used for dental treatment.

  In dental treatment, treatment may be performed while observing the surgical site with a stereomicroscope. Many microscopes used for such treatments display digital images because of recent improvements in camera performance.

  In the binocular digital microscope, the image of the surgical site obtained by the pair of magnification observation optical systems is converted into an electronic image by the imaging means, and the image is displayed by the pair of display means. In order to brighten the surgical site in microscope observation, side oblique illumination that irradiates the surgical site from the outside of the microscope, coaxial epi-illumination that irradiates from the same direction as the optical axis of the lens, and the like are provided.

  On the other hand, in a dental operation, an operation of filling a filler in a portion where a carious portion has been removed by grinding is performed. As such a filler, a resin resin that has been cured by irradiation with ultraviolet rays has been used in the past, but since the development of LEDs has recently progressed, it is cured by irradiation with blue light (wavelength of about 460 nm to 480 nm). Increasingly, photo-curing resins are used.

  At this time, if a white LED is used as the illumination light source, the filler may be cured at a timing unintended by the dentist due to the illumination. Therefore, when a photo-curing resin is used, light having a curing wavelength is used. There is a dental lighting device that can be reduced by a filter or the like (for example, Patent Document 1).

  If it does so, when irradiating an operation part with the illumination means with which the microscope was equipped, there is a possibility that a filler may harden at the timing contrary to a dentist's will similarly. Therefore, when irradiating the surgical site with the illumination means provided in the microscope, the light having a wavelength at which the filler is cured should be blocked or reduced by passing through the filter.

JP 2010-33743 A

  However, when irradiating light, if the light having a predetermined wavelength is blocked or attenuated through the filter, there is an adverse effect that the surgical site becomes difficult to see.

  Therefore, in view of such circumstances, the present invention has an object to provide a dental microscope in which the surgical site does not become difficult to see even when irradiated with light having a predetermined wavelength blocked or reduced. To do.

  To achieve the above object, the dental microscope of the present invention images a surgical part, a filter that blocks or attenuates light of a predetermined wavelength, illumination means that irradiates light to the surgical part through the filter, and the surgical part. Image processing means for correcting the color tone of the image, and display means for displaying an image of the surgical site corrected by the image processing means, wherein the image processing means has a wavelength blocked or dimmed by the filter The color tone of the image is corrected so as to compensate for the light.

  Here, the light blocked or dimmed by the filter may be blue light, or an orange filter may be used as the filter. Further, the image processing means may correct the color tone of the image by changing the RGB value of the image.

  According to the dental microscope of the present invention, by blocking or dimming light of a predetermined wavelength, it is possible to avoid hardening of the filler at an unintended timing and to make it difficult to see the surgical site. Play.

It is explanatory drawing of the dental microscope which concerns on this invention.

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

  FIG. 1 is an explanatory diagram of a dental microscope according to the present invention. The dental microscope 10 includes a pair of magnification observation optical systems 20L and 20R inside the objective-side mirror 21 close to the surgical section 50. The objective lens 22, a pair of imaging lenses 23L and 23R, and an imaging unit. A pair of cameras 24 </ b> L and 24 </ b> R are provided in order from the side closer to the surgical site 50. That is, the image of the surgical part 50 passes through the imaging lenses 23L and 23R from the objective lens 22 and is converted into an electronic image by the cameras 24L and 24R.

  Images captured by the cameras 24L and 24R are displayed on a pair of monitors 26L and 26R that are electrically connected to the cameras 24L and 24R. At this time, the captured image can be displayed as it is, and the corrected image can be monitored via the image processing means 25L and 25R provided between the cameras 24L and 24R and the monitors 26L and 26R. It is also possible to display on 26L and 26R.

  The monitors 26L and 26R are mounted inside the pair of eyepiece tubes 27L and 27R. When the dentist looks into the eyepiece tubes 27L and 27R, the left and right eyeballs 40L and 40R are respectively viewed from the monitors 26L and 26R. It is configured to be able to observe and stereoscopically view the image of the surgical part 50.

  The surgical section 50 is irradiated with light L from the illumination means 30. In FIG. 1, although one side oblique illumination is illustrated as the illumination means 30, naturally two or more units may be provided. Further, the installation position of the illumination means 30 may be inside the microscope, and is not limited to side oblique illumination, but may be coaxial epi-illumination. The illumination means 30 may be a halogen lamp or a fluorescent lamp, but it is preferable to use a white LED because it has advantages of a small amount of heat generation, a long life, and low power consumption.

  Here, when the filling material 51 is packed in the surgical part 50, it is necessary to avoid the hardening of the filling material 51 at a timing unintended by the dentist. Therefore, by irradiating the light L through the filter 31, the operation part 50 can be irradiated with the light Lb obtained by blocking or reducing the light having a predetermined wavelength that cures the filler 51. When it is desired to remove blue light, if an orange filter is used as the filter 31, a wavelength of about 560 nm or less can be cut.

  When the filling material 51 is not packed, it is not necessary to irradiate through the filter 31, so that it is not particularly necessary to correct the image by the image processing means 25L and 25R. However, when the filling material 51 is packed, the light Lb that has passed through the filter 31 is irradiated, and since light of a predetermined wavelength is excluded at this time, images captured by the cameras 24L and 24R are also filtered. The surgical part 50 may be difficult to see due to the color passing through 31. Therefore, it is assumed that the images picked up by the cameras 24L and 24R are corrected so as to be easily visible using the image processing means 25L and 25R.

  Since the dental microscope 10 of the present invention is a digital microscope, the images captured by the cameras 24L and 24R are digital data. Therefore, correction of the images displayed on the monitors 26L and 26R can be easily performed using image processing software or the like. be able to. Therefore, the object irradiated with the light Lb that has passed through the filter 31 can be displayed as if it was observed under natural light by correcting the color tone of the image. In other words, the light with the blocked or dimmed wavelength may be displayed with a stronger color tone correction.

  Here, the correction of the color tone can be performed by changing the RGB value. In this case, how much correction is required varies depending on the place where the dental microscope 10 is used, the brightness of the room, and the like, and thus needs to be individually dealt with. However, if it is used under almost the same conditions each time, the correction after the next time can be easily performed by storing the corrected RGB values once.

  As described above, it is possible to avoid curing of the filler at an unintended timing by blocking or dimming light having a predetermined wavelength that cures the filler, and the dentist can pass through the microscope. Even if the surgical site is observed, an effect that the surgical site does not become difficult to see is obtained.

DESCRIPTION OF SYMBOLS 10 Dental microscope 20L, 20R Magnification observation optical system 21 Mirror body 22 Objective lens 23L, 23R Imaging lens 24L, 24R Camera 25L, 25R Image processing means 26L, 26R Monitor 27L, 27R Eyepiece tube 30 Illumination means 31 Filter 40L, 40R eyeball 50 operation part 51 filler

Claims (4)

A filter that blocks or attenuates light of a predetermined wavelength;
Illumination means for irradiating the surgical site with light through the filter;
Image processing means for correcting the color tone of an image obtained by imaging the surgical part;
Display means for displaying an image of the surgical site corrected by the image processing means,
The dental microscope characterized in that the image processing means corrects the color tone of an image so as to compensate for light having a wavelength blocked or reduced by the filter.   The dental microscope according to claim 1, wherein the light blocked or dimmed by the filter is blue light.   The dental microscope according to claim 1, wherein the filter is an orange filter.   The dental microscope according to claim 1, wherein the image processing unit corrects the color tone of the image by changing an RGB value of the image.

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