Caries detection device
A caries detection device includes: a screening optical system that irradiates a tooth with a near-infrared ray from a light source to detect transmitted light through the tooth; and a Raman scattered light detection optical system that irradiates a caries candidate area of the tooth detected from information of the transmitted light with a near-infrared ray from the light source to detect Raman scattered light generated from the caries candidate area.
1 . A caries detection device comprising:
a fluorescence detection sensor configured to detect fluorescence generated from a tooth;
a screening optical system that irradiates the tooth with first inspection light from a light source and detects transmitted light through the tooth or fluorescence generated from the tooth to identify a caries candidate area; and
a Raman scattered light detection optical system that irradiates the caries candidate area, which is identified from information of an image generated from the transmitted light or the fluorescence detected by the screening optical system, in the tooth with second inspection light from the light source and detects Raman scattered light generated from the caries candidate area,
wherein a part of the screening optical system and a part of the Raman scattered light detection optical system are configured by a common optical system, and
wherein the common optical system forms a path in which the fluorescence passes through a variable focal length lens and an optical filter, and is reflected by the optical filter toward the fluorescence detection sensor to identify the caries candidate area.
2 . The caries detection device according to claim 1 , further comprising circuitry configured to identify the caries candidate area in accordance with information of the transmitted light or the fluorescence detected by the screening optical system.
3 . The caries detection device according to claim 1 , further comprising circuitry configured to detect caries of the caries candidate area in accordance with information of an image generated from the Raman scattered light detected by the Raman scattered light detection optical system.
4 . The caries detection device according to claim 1 , wherein the first inspection light and the second inspection light are both near-infrared rays.
5 . The caries detection device according to claim 1 , wherein the first inspection light is light having a shorter wavelength than the fluorescence, and the second inspection light is a near-infrared ray.
6 . The caries detection device according to claim 1 , wherein the screening optical system further includes a variable focal length optical system capable of changing an irradiation range of the first inspection light on the tooth.
7 . The caries detection device according to claim 6 , wherein the variable focal length optical system further includes a liquid lens.
8 . The caries detection device according to claim 1 , further comprising circuitry further configured to correct a deviation of an irradiation position of the second inspection light in the caries candidate area in accordance with information of the caries candidate area.
9 . The caries detection device according to claim 1 , further comprising circuitry configured to cancel an effect of shakes of the screening optical system and the Raman scattered light detection optical system on the tooth.
10 . The caries detection device according to claim 1 , wherein the Raman scattered light detection optical system further includes a filter that transmits only light of a specific wavelength from the Raman scattered light generated from the caries candidate area.
11 . The caries detection device according to claim 1 , further comprising a display device that displays one or both of an image based on information of the transmitted light or the fluorescence detected by the screening optical system and an image based on information of the Raman scattered light detected by the Raman scattered light detection optical system.
12 . The caries detection device according to claim 11 , further comprising circuitry further configured to control a display of, on the display device, an image of a specific caries candidate area based on information of the transmitted light or the fluorescence detected by the screening optical system and an image of the specific caries candidate area based on information of the Raman scattered light detected by the Raman scattered light detection optical system.
13 . The caries detection device according to claim 12 , wherein the circuitry is further configured to detect a difference in position between the image of the specific caries candidate area based on the information of the image generated from the transmitted light or the fluorescence detected by the screening optical system and the image of the specific caries candidate area based on the information of the image generated from the Raman scattered light detected by the Raman scattered light detection optical system.