Ultra-fine 3D camera device for photographing root canal

Abstract

The present invention relates to an ultra-fine 3D camera device including: a probe including at least one optical fiber cable; a light source unit emitting light of the same wavelength or light of different wavelengths to a structure through the at least one optical fiber cable; an optical lens unit for detecting a reflected light signal emitted to and reflected from the structure through the at least one optical fiber cable and receiving the detected reflected light signal to divide an optical signal for each color included in the light source unit; an image sensor unit for converting the optical signal formed for each color through the optical lens unit into an electrical signal and outputting analog image data; and an image conversion processing unit for converting the analog image data output from the image sensor unit into digital image data for each color, signal-processing the converted digital image data for each color, converting the signal-processed digital image data into color image data, and outputting the color image data.

Description

Ultra-fine 3D camera device for root canal photography

[0001] The present invention relates to an ultra-fine three-dimensional (3D) camera for root canal photography, and more particularly, to a camera that receives an incident wave from a target object through an optical fiber at an imaging sensor to create a 3D image.

[0002] Endodontics is a branch of dentistry that diagnoses and treats the pulp, located deep within a tooth. Root canal treatment is necessary in cases of severe tooth decay, gum disease, or bacterial infection of the tooth's nerve tissue, the pulp. The treatment involves removing the inflamed tissue and filling the space with a special filling material. The narrow space, called the root canal, must be precisely identified and the infected inflammation completely removed to prevent future problems. If this process is not completed properly, secondary root canal treatment, such as re-root canal treatment or apicoectomy, may be necessary.

[0003] Root canal therapy, which involves treating the delicate and complex structures known as the root canal, is a complex process that requires both meticulous attention and a high level of technical skill. Accurately identifying the canal orifice is crucial during the root canal access process. This allows for the measurement of the length of the root canal before root canal treatment can begin. Rapid and accurate identification of the root canal orifice is crucial for successful root canal treatment.

[0004] Traditionally, a small alveolar mirror (mirror) is used to identify the root canal entrance. The interior of the tooth is visually observed through the alveolar mirror, and a file is used to locate the canal entrance. Traditional methods rely on the practitioner's experience and manual dexterity, requiring considerable time and effort to locate the canal entrance. Recently, microscopes have been used to precisely examine the interior of the root canal. However, microscopes are extremely expensive and prohibitive for private dental practice. Therefore, a magnifying glass-type lens (Loope), which provides minimal magnification, is commonly used. While microscopes typically offer 20x magnification, they are physically limited in directly photographing the narrow and remote interior of the root canal. Because the image is indirectly magnified through the alveolar mirror, image quality is limited and the operator experiences significant eye fatigue. Additionally, it is not easy to find the root canal entrance because the distance from the microscope to the inside of the root canal is more than 60 cm, the location of the root canal entrance varies depending on the tooth, and the structure is complex.

[0005] Conventional oral cameras have an electrical risk factor and a significant foreign body sensation felt by patients because the image acquisition device containing electrical components is directly inserted into the oral cavity.

[0006] Furthermore, conventional intraoral cameras use disposable sanitary plastic wrap as a means of preventing cross-contamination, as the image acquisition device, which includes electrical components, is inserted directly into the oral cavity. However, because intraoral cameras are used inside the oral cavity, sterilization, rather than disinfection, is absolutely essential for infection prevention. While autoclaving, which uses steam heated to high temperatures and pressure, is a method of infection prevention, the materials used in conventional intraoral cameras are not amenable to autoclaving, increasing the risk of infection.

[0007] Additionally, conventional oral cameras cover the image acquisition area with sanitary vinyl, which results in a decrease in image quality.

[0008] To solve the above-mentioned problem, the purpose of the present invention is to provide an ultra-fine 3D camera device that can easily obtain 3D image data in a very narrow area such as the oral cavity using optical fiber.

[0009] Another object of the present invention is to quickly and accurately detect the entrance of the pulp canal and the location of the pulp hole during root canal treatment.

[0010] In addition, another object of the present invention is to resolve electrical risks by obtaining intraoral images using optical fibers that do not pose electrical risks.

[0011] In addition, another object of the present invention is to provide a detachable optical fiber probe to which high-pressure steam sterilization is applicable.

[0012] However, the technical task that this embodiment seeks to achieve is not limited to the technical task described above, and other technical tasks may exist.

[0013] According to one embodiment of the present invention for achieving the above-described object, an ultra-fine 3D camera device may include a probe including at least one optical fiber cable, a light source unit that irradiates light of the same wavelength or light of different wavelengths onto a structure through the at least one optical fiber cable, an optical lens unit that detects a reflected light signal irradiated onto the structure through the at least one optical fiber cable and reflected, receives the detected reflected light signal, and disperses the light signal by color included in the light source unit, an image sensor unit that converts the light signal formed by color through the optical lens unit into an electrical signal and outputs analog image data, and an image conversion processing unit that converts the analog image data output from the image sensor unit into digital image data by color, and converts the converted digital image data by color into color image data by signal processing and outputs the converted digital image data by color.

[0014] In one embodiment, the image sensor unit may be a phase detection image sensor or a quad phase detection image sensor.

[0015] In one embodiment, the image sensor unit can obtain phase difference information of the upper and lower sides and the left and right sides from the at least one optical fiber cable using a phase detection function, calculate optical distance information of each image data using the obtained phase difference information, obtain color-specific imaging data including the calculated optical distance information, and generate three-dimensional image data from the calculated optical distance information.

[0016] In one embodiment, the image conversion processing unit is included in the front unit, and the front unit may further include a control unit that transmits color image data output from the image conversion processing unit to a computing device through a communication unit, a power supply unit that supplies power to an ultra-fine 3D camera device, and a storage unit that stores digital image data.

[0017] In one embodiment, the at least one fiber optic cable penetrates the body of the probe and protrudes from one end of the probe, and the probe may be made of any one material selected from the group consisting of stainless steel, titanium, tungsten carbide, nickel-chromium alloy, or a combination thereof for sterilization.

[0018] In one embodiment, the optical lens unit includes a first lens, a second lens, an optical fiber bundle, a splitter, a protective glass film, and a lens unit case, and light irradiated from the light source unit passes through the optical fiber bundle, is split by the splitter, and then passes through the first lens to be transmitted to the at least one optical fiber cable, and light reflected from the structure can be transmitted through the at least one optical fiber cable to pass through the first lens, the splitter, and the second lens, and then be transmitted to the image sensor.

[0019] According to another embodiment of the present invention, an ultra-fine 3D camera device includes a probe, an optical lens unit, an electric unit, and a battery unit, wherein the probe includes at least one optical fiber cable, and the electric unit includes a light source unit that irradiates light of the same wavelength or light of different wavelengths to a structure through the at least one optical fiber cable, an image sensor that receives an optical signal, an electric circuit board that supports the light source unit and the image sensor and includes a circuit that controls the ultra-fine 3D camera, an ON / OFF switch that supplies power, and a first signal connection terminal that receives power from a battery unit, and wherein the optical lens unit includes an optical fiber bundle that receives and transmits light irradiated from the light source unit, a splitter that disperses light transmitted from the optical fiber bundle, a first lens that transmits the light dispersed from the splitter to the probe, a second lens that receives light reflected after being irradiated to the structure and transmits it to an image sensor, a protective glass film, and a lens unit case, and wherein the battery unit includes a second signal connection terminal that transmits power to the electric unit, It may include a battery cell and a charging terminal.

[0020] In one embodiment, the probe is detachably connected to the optical lens unit, the optical lens unit is detachably connected to the electric unit, and the electric unit and the battery unit are detachably connected to each other.

[0021] In one embodiment, the device further comprises a charger having a holder function, wherein the charger can wirelessly charge the ultra-fine 3D camera device.

[0022] In one embodiment, the image sensor unit may be a phase detection image sensor or a quad phase detection image sensor.

[0023] In one embodiment, the image sensor unit can obtain phase difference information of the upper and lower sides and the left and right sides from the at least one optical fiber cable using a phase detection function, calculate optical distance information of each image data using the obtained phase difference information, obtain color-specific imaging data including the calculated optical distance information, and generate three-dimensional image data from the calculated optical distance information.

[0024] In one embodiment, the at least one fiber optic cable penetrates the body of the probe and protrudes from one end of the probe, and the probe may be made of any one material selected from the group consisting of stainless steel, titanium, tungsten carbide, nickel-chromium alloy, or a combination thereof for sterilization.

[0025] In one embodiment, the portable device includes an optical lens unit that is connected to the probe and receives and transmits light irradiated from a light source, a splitter that splits the light transmitted from the optical fiber bundle, a first lens that transmits the light split from the splitter to the probe, a second lens that receives light reflected after being irradiated on a structure and transmits it to an image sensor, a protective glass film, and a lens unit case, a probe coupler that is attached to one end of the probe and is connected to the optical lens unit, an image sensor that receives light from the optical lens unit, a light source, and a display unit, and a case configured to accommodate the portable device, wherein the light source of the portable device may be arranged coaxially with the optical fiber bundle of the optical lens unit so as to irradiate light to the optical fiber bundle of the optical lens unit, and the image sensor may include a coupling unit that is arranged coaxially with the second lens so as to be incident on the reflected light.

[0026] In one embodiment, the light source may be visible light or invisible light.

[0027] In one embodiment, the image sensor is any one of a 2D image sensor, a phase detection autofocus (PDAF) image sensor, and a quad phase detection autofocus (QPDAF) image sensor, and when the image sensor is a 2D image sensor, a 2D image can be displayed, and when the image sensor is a phase detection autofocus image sensor or a quad phase detection autofocus image sensor, a 3D image can be displayed.

[0028] According to the present invention, 3D image data of a very narrow area, such as the inside of the oral cavity, can be easily obtained using optical fiber.

[0029] In addition, according to the present invention, the entrance of the pulp canal and the location of the pulp hole can be quickly and accurately detected during root canal treatment.

[0030] In addition, according to the present invention, since intraoral images are acquired using optical fibers that do not pose electrical risks, electrical risks can be resolved.

[0031] In addition, according to the present invention, sterilization of the probe by high-pressure steam sterilization is possible by providing a detachable optical fiber probe.

[0032] FIG. 1 is a drawing showing the configuration of an ultra-fine 3D camera device (100) according to an embodiment of the present invention.

[0033] FIG. 2 is a drawing showing an ultra-fine 3D camera device (100) and a charger (200) according to an embodiment of the present invention.

[0034] FIG. 3 is a drawing showing a portable video recording device (300) according to an embodiment of the present invention.

[0035] FIG. 4 is a block diagram showing the internal configuration of an ultra-fine 3D camera (100) according to an embodiment of the present invention.

[0036] Figure 5 is a block diagram showing the internal configuration of a computer device (500) according to an embodiment of the present invention.

[0037] According to one embodiment of the present invention, an ultra-fine 3D camera device may include a probe including at least one optical fiber cable, a light source unit that irradiates light of the same wavelength or light of different wavelengths onto a structure through the at least one optical fiber cable, an optical lens unit that detects a reflected light signal irradiated onto the structure through the at least one optical fiber cable and reflected, receives the detected reflected light signal, and disperses the light signal by color included in the light source unit, an image sensor unit that converts the light signal formed by color through the optical lens unit into an electrical signal and outputs analog image data, and an image conversion processing unit that converts the analog image data output from the image sensor unit into digital image data by color, and converts the converted digital image data by color into color image data by signal processing and outputs the converted digital image data by color.

[0038] Below, with reference to the attached drawings, embodiments of the present invention are described in detail so that those skilled in the art can easily implement them. The present invention is susceptible to various modifications and embodiments, and specific embodiments are illustrated in the drawings and specifically described in the detailed description. However, this is not intended to limit the present invention to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention.

[0039] To clearly explain the present invention, parts irrelevant to the description have been omitted from the drawings, and similar parts have been designated with similar drawing reference numerals throughout the specification. In addition, when describing with reference to the drawings, even if components are indicated by the same name, the drawing numbers may vary depending on the drawing. The drawing numbers are described merely for the convenience of explanation, and the concept, feature, function, or effect of each component is not limited by the drawing numbers.

[0040] In describing each drawing, similar reference numerals are used to refer to similar components. Terms such as first, second, etc. may be used to describe various components, but the components should not be limited by these terms. These terms are used only to distinguish one component from another. For example, a first component could be referred to as a second component, and similarly, a second component could also be referred to as a first component, without departing from the scope of the present invention. The term "and / or" includes any combination of multiple related listed items or any one of multiple related listed items.

[0041] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

[0042] Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

[0043] Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case where it is "directly connected" but also the case where it is "electrically connected" with another element in between. Furthermore, when a part is said to "include" a component, this should be understood to mean that it may include other components rather than excluding other components unless specifically stated to the contrary, and does not preclude the presence or possibility of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0044] In this specification, a 'part' or 'module' includes a unit realized by hardware or software, or a unit realized using both, and one unit may be realized using two or more pieces of hardware, or two or more units may be realized by one piece of hardware.

[0045] Hereinafter, an ultra-fine 3D camera device according to the present invention will be described in detail with reference to the attached drawings.

[0046] FIG. 1 is a drawing showing an ultra-fine 3D camera device (100) according to one embodiment of the present invention.

[0047] Referring to FIG. 1, the ultra-fine 3D camera device (100) includes a probe (110) configured to allow an optical fiber cable (111) to pass through a probe member (112), an electrical part (130) including a light source (131), an image sensor (132), an electrical circuit board (133), an ON / OFF switch (134), and a first signal connection terminal (135), an optical lens part (120) connected to the probe (110) and including a first lens (122), a second lens (126), a splitter (123), an optical fiber bundle (124), a protective glass film (121), and a lens part case (125), and a battery part (140) including a second signal connection terminal (141), a battery cell (142), and a charging terminal (143).

[0048] Specifically, the probe (110) is configured such that the optical fiber cable (111) passes through the probe member (112). Light irradiated from the light source (131) passes through the optical lens unit (120) and is then transmitted from one end of the optical fiber cable (111) to the other end. A portion of the optical fiber cable (111) protrudes from the end of the probe member (112). Measurement light can be irradiated to a target object through the optical fiber cable (111). The target object may be, for example, a dental structure in the oral cavity of a dental patient, but is not limited thereto, and may be structures used in various fields such as medical, scientific research, industrial inspection, and security. The light reflected from the target object is re-incident to the optical fiber cable (111), and transmitted to the image sensor (132) through the optical lens unit (120). An optical lens (not shown) may be additionally coupled to one end of the optical fiber cable (111). The optical lens may be selected so that the light irradiated from the optical fiber cable (111) has an angle of view of between 60 degrees and 150 degrees. However, the optical lens additionally coupled to the optical fiber cable (111) may be selected from various types according to the needs of a person skilled in the art, and the angle of view at this time may be selected in various ways, such as 90 degrees, 60 degrees, or 120 degrees, depending on the design purpose.

[0049] The probe (110) may require exposure to high-pressure saturated steam, typically at a temperature of approximately 121 degrees Celsius, for a specified period of time to prevent infection and cross-contamination. This process effectively kills bacteria, viruses, and other microorganisms, making the probe safe for use in medical procedures such as dental procedures. The probe member (112) for high-pressure steam sterilization may be made of, for example, stainless steel, titanium, tungsten carbide, a nickel-chromium alloy, or a combination thereof.

[0050] The front part (130) includes a light source (131), an image sensor (132), an electric circuit board (133), an ON / OFF switch (134), and a first signal connection terminal (135). The light source (131) can selectively use a multi-wavelength light source such as visible light or invisible light (NIR, SWIR). The light wavelength can be selected in various ways to obtain a desired image. For example, visible light has a wavelength of about 400 to 700 nanometers and is most commonly used as a light source in imaging devices. Near infrared (NIR) has a wavelength in the range of about 700 to 2500 nanometers. Near infrared light can penetrate deeper into materials than visible light, making it useful for viewing through surface layers or examining the internal structure of a target object. This property is useful, for example, for visualizing blood vessels or tissues under the skin. Shortwave infrared (SWIR) has a wavelength ranging from approximately 1,400 to 3,000 nanometers. Its imaging capabilities allow it to see through certain types of materials (such as silicon) that are impervious to visible or near-infrared light, and it can also be used in low-light or dark environments.

[0051] The present invention can obtain various types of information from a target object by selectively using multi-wavelength light sources, including visible and invisible light. For example, some materials reflect specific wavelengths of light differently, providing valuable information about their properties. This facilitates the observation of inflammation, cracks, and other lesions within root canals that are difficult to detect with the naked eye.

[0052] The image sensor (132) may be a phase detection autofocus (PDAF) image sensor or a quad phase detection autofocus (QPDAF) image sensor. A phase detection autofocus (PDAF) image sensor is an autofocus method that operates by dividing and comparing incoming light into pairs of images. Typically, a dedicated autofocus (AF) sensor is used separate from the image sensor. When a pair of images is aligned, the camera recognizes that the image is in focus. PDAF is generally faster and more stable than contrast detection autofocus, especially in bright situations.

[0053] Quad Phase Detection Autofocus (QPDAF) image sensors divide each pixel into four subpixels, each of which can measure the direction of light. Using this information, the camera can estimate the distance between the subject and the lens and focus. Because the system has more data points to use when determining focus, this can potentially significantly improve the accuracy and speed of the autofocus system. QPDAF performs better in bright situations and provides faster and more accurate focusing than PDAF or Dual Pixel AF. Because each pixel is divided into four subpixels, QPDAF imaging sensors can focus on all subjects, even across a wide range of distances.

[0054] The image sensor (132) converts the optical signal formed by color through the optical lens unit (120) into an electrical signal and outputs analog image data. The image sensor (132) uses a phase detection function to obtain phase difference information in the upper and lower directions and left and right directions from the optical fiber cable (111), calculates optical distance information of image data for each structure (e.g., teeth) based on the obtained phase difference information, obtains color-specific image data including the calculated optical distance information, and generates image data from the calculated optical distance information.

[0055] The electric circuit board (133) may include circuit devices for acquiring and processing image data. For example, it may include an image conversion processing unit (451), a storage unit (452), a communication unit (453), a control unit (454), a power unit (455), etc., which are illustrated in FIG. 4 to be described later. A first signal connection terminal (135) is connected to one end of the electric circuit board (133), and the first signal connection terminal (135) may be coupled with a second signal connection terminal (141) of the battery unit (140) to supply power. An ON / OFF switch (134) is electrically connected to the electric circuit board (133) to turn the electric unit (130) on / off. The image conversion processing unit (451) converts analog image data output from the image sensor (132) into color-specific digital image data, and performs signal processing on the converted color-specific digital image data to convert it into color image data and output it. A detailed description of the image conversion processing unit (451) will be described later in FIG. 4.

[0056] The optical lens unit (120) includes a protective glass film (121), a first lens (122), a splitter (123), an optical fiber bundle (124), a lens unit case (125), and a second lens (126). The protective glass film (121) is intended to protect internal components of the optical lens device from external factors such as dust, moisture, and physical damage. A coating may be applied to the surface of the protective glass film (121) to help reduce glare, reflection, and other optical aberrations. Light irradiated from a light source (131) is transmitted to the optical fiber bundle (124) of the optical lens unit (120). The optical fiber bundle (124) is connected to the splitter (123) and serves to split the light from the light source into multiple paths and transmit them. The first lens (122) serves to focus the light. The second lens (126) may be a concave or aspherical lens.

[0057] The battery unit (140) includes a second signal connection terminal (141), a battery cell (142), a charging terminal (143), and a coupling hook (144). The second signal connection terminal (141) serves as an interface that supplies power between the battery unit (140) and the electrical unit (130). It can also transmit information such as battery level, charging status, or other diagnostic data to the control system of the device.

[0058] The battery cell (142) is the primary power source within the battery device. It stores electrical energy that can be used to power the 3D camera device. Depending on the power requirements of the 3D camera device, the battery cell (142) may be a single cell or a collection of smaller cells. Furthermore, depending on the specific application and performance requirements, it may be of various types, such as lithium ion or nickel metal hydride.

[0059] The charging terminal (143) is an interface that supplies power when the battery cell is being charged. During charging, it is connected to an external power source, allowing electrical energy to flow to the battery cell. While FIG. 1 exemplifies a charging method for a 3D camera device that involves electrical connection, both wired and wireless charging are possible, and the charging method may vary depending on the standard or specification.

[0060] The coupling hook (144) is part of the physical mechanism that secures the battery unit. The coupling hook (144) ensures that the battery unit (140) remains firmly attached to the main body (130) in the correct position. It also allows for easy removal and replacement of the battery unit (140) when necessary.

[0061] As illustrated in Fig. 1, a wired connection may be achieved using a wired connection cable (152). One end of the wired connection cable (152) includes a signal connection terminal, and the other end includes a USB connection terminal (153). Image data acquired from the ultra-fine 3D camera device (100) can be transmitted to a computer device or portable device via the USB connection terminal (153).

[0062] FIG. 2 is a drawing showing an ultra-fine 3D camera device (100) and a charger (200) according to an embodiment of the present invention.

[0063] Referring to FIG. 2, the ultra-fine 3D camera device (100) can be charged by being coupled with a charger (200) having a holder function. The ultra-fine 3D camera device (100) may have a built-in connector or coupling mechanism that aligns with a corresponding connector of the charger (200). Depending on the design, a physical plug and socket arrangement, a magnetic connection, or even a wireless charging coil is possible. When the ultra-fine 3D camera device (100) is seated on the charger (200), the connectors are aligned, thereby creating an electrical connection or electrical coupling between the ultra-fine 3D device (100) and the charger (200). Here, the electrical connection or electrical coupling means a wireless coupling, but is not limited thereto, and may also include a wired connection. When the ultra-fine 3D camera device (100) and the charger (200) are electrically coupled, the charging terminal (143) of the battery unit (140) is electrically connected to the corresponding terminal in the charger. This allows power to flow from the charger (200) to the battery cell (142) of the micro 3D camera device (100). The charger (200) is designed to control the charging rate so that the battery cell (142) is charged safely and efficiently. The charger (200) not only supplies power, but also serves as a holder for the micro 3D camera device (100). The design of the charger may include a space or slot for safely placing the camera device while charging. This not only ensures proper alignment of the charging connector, but also provides a convenient and safe way to store the device when not in use. The holder may be designed to hold the device in a specific orientation, such as vertical or sideways, depending on design requirements. The charger (200) may include various safety features to protect the battery and the micro 3D camera device. For example, it may include an overcharge protection feature that stops charging when the battery is fully charged, and a thermal management feature that prevents overheating during charging.

[0064] FIG. 3 is a drawing showing a portable video recording device (300) according to an embodiment of the present invention.

[0065] Referring to FIG. 3, the probe (310) includes a fiber optic cable (311), a probe handle (312), a probe coupler (313), and a protective glass film (314). The optical lens unit (320) includes a protective glass film (321), a first lens (322), a splitter (323), a second lens unit (324), and an optical fiber bundle (325). A portable device case (330) is connected to the optical lens unit (320) and can accommodate a portable device (340). The portable device (340) includes a light source (341), an image sensor (342), and a display unit (343).

[0066] The probe (310) and the optical lens unit (320) perform the same functions as the probe (110) and the optical lens unit (120) of Fig. 1, and thus a detailed description thereof will be omitted. The portable device (340) may be a portable electronic device such as a tablet PC, a mobile phone, a smart phone, an e-reader, a personal digital assistant (PDA), an enterprise digital assistant (EDA), a digital still camera, a digital video camera, a portable multimedia player (PMP), a personal navigation device (PND), a handheld game console, or the like. The portable device (340) includes a light source (341) and an image sensor (342).

[0067] In this embodiment, the light source (341) preferably uses visible light, but a multi-wavelength light source such as invisible light (NIR, SWIR) may optionally be used. The light from the light source (341) of the portable device (340) passes through the optical lens unit (320) and is then irradiated to the structure via the optical fiber cable (311). Here, the structure may refer to a tooth.

[0068] The optical lens unit (320) detects the reflected light signal reflected from the structure, receives the detected reflected light signal, and analyzes the light signal by color included in the light source. The image sensor (342) converts the light signal formed by color through the optical lens unit into an electrical signal and outputs analog image data.

[0069] The image sensor (342) may use a 2D image sensor included in the portable device (340), but a phase detection auto-focus image sensor or a quad phase detection auto-focus image sensor may be used to acquire a 3D image. Image information input through the 2D image sensor is signal-processed by a processor (not shown) in the portable device (340) and an image is displayed through the display unit (343). When a phase detection auto-focus image sensor or a quad phase detection auto-focus image sensor is used to acquire a 3D image, the image sensor (342) uses a phase detection function to acquire phase difference information in the up-down and left-right directions from the optical fiber cable (311), calculates optical distance information of image data for each structure based on the acquired phase difference information, acquires color-specific imaging data including the calculated optical distance information, and generates image data from the calculated optical distance information.

[0070] A processor (not shown) included in a portable device (340) converts analog image data output from an image sensor (342) into color-specific digital image data, and the converted color-specific digital image data is signal-processed to convert it into color image data and output to a display unit (343). By combining a portable device (340) including a light source (341) and an image sensor (342) with an ultra-fine camera including an optical fiber cable, it has the advantage of being compact and easy to carry.

[0071] FIG. 4 is a block diagram showing the internal configuration of an ultra-fine 3D camera according to an embodiment of the present invention.

[0072] Referring to FIG. 4, the light source unit (410) selectively irradiates light of the same wavelength or light of different wavelengths to a structure via an optical fiber cable. Here, the structure may refer to teeth within the oral cavity, or may refer to other structures depending on the application.

[0073] The optical lens unit (420) detects the reflected light signal that is irradiated and reflected on the structure through an optical fiber cable, receives the detected reflected light signal, and disperses the light signal into each color included in the light source unit (410).

[0074] The image sensor unit (430) converts an optical signal formed by color through the optical lens unit (420) into an electrical signal and outputs analog image data. The image sensor unit (430) may include a phase detection image sensor or a quad phase detection image sensor. The image sensor unit (430) uses a phase detection function to obtain upper and lower and left and right phase difference information from an optical fiber cable, calculates optical distance information of each tooth image data using the obtained phase difference information, obtains color-specific image data including the calculated optical distance information, and generates 3D image data from the calculated optical distance information.

[0075] The power unit (450) includes an image conversion processing unit (451), a storage unit (452), a communication unit (453), a control unit (454), and a power supply unit (455).

[0076] The image conversion processing unit (451) converts analog image data output from the image sensor unit (430) into color-specific digital image data, and performs signal processing on the converted color-specific digital image data to convert it into color image data and output it.

[0077] The storage unit (452) is a hardware that stores various data processed by the processor, and can store, for example, various programs or applications to be driven by the processor. The storage unit (452) can be implemented as a non-volatile memory such as ROM, PROM, EPROM, EEPROM, flash memory, PRAM, MRAM, RRAM, FRAM, etc., or can be implemented as a volatile memory such as DRAM, SRAM, SDRAM, PRAM, RRAM, FeRAM, etc. In addition, the memory (110) can also be implemented as an HDD, SSD, SD, Micro-SD, etc.

[0078] The communication unit (453) can connect to a network and receive content from an external device (not shown). The communication unit (453) may include a combination of modules including one or more of a wireless LAN, a Bluetooth communication unit, and a wired Ethernet. In addition, the communication unit (1550) can receive a control signal from an external device. The control signal may be implemented as a Bluetooth type, an RF signal type, or a Wi-Fi type.

[0079] The control unit (454) transmits color image data output from the image conversion processing unit (451) to a computing device via the communication unit (453). The control unit (454) may include a processor, and the processor may be implemented as a central processing unit (CPU), a graphics processing unit (GPU), an application processor (AP), or a neural processing unit (NPU).

[0080] FIG. 5 is a block diagram showing the internal configuration of a computer device (500) according to one embodiment of the present invention.

[0081] The computer device (500) of FIG. 5 is a device that receives image data from an ultra-fine 3D camera, processes the data, and displays the image to a user through a display unit (520). Specifically, the computer device (500) includes a processor unit (510), an image data storage unit (520), a display unit (530), and a communication interface unit (540).

[0082] The processor unit (510) can execute commands or at least one program for processing image data stored in the image data storage unit (520). The processor unit (510) can also perform overall functions for controlling a server (not shown) and process various operations within the server (not shown). The processor unit (510) can be implemented as an array of multiple logic gates or a general-purpose microprocessor. The processor unit (510) can be composed of a single processor or multiple processors. The processor unit (510) can be at least one of a CPU, a GPU, and an AP provided in the device (100), but this is merely an example, and the processor (120) can be implemented in various other forms.

[0083] Image data transmitted through the communication unit (453) of the ultra-fine 3D camera can be received through the communication interface unit (540). The communication interface unit (540) can be connected to the communication unit (453) of the ultra-fine 3D camera via a wired or wireless connection, or can be connected to a network such as a local area network (LAN) or a wide area network (WAN). In addition, it can be connected to a dedicated channel for one-to-one communication with a user or a user's terminal.

[0084] The image data storage unit (520) stores image data transmitted from an ultra-fine 3D camera. The image data storage unit (520) may be implemented as a non-volatile memory such as ROM, PROM, EPROM, EEPROM, flash memory, PRAM, MRAM, RRAM, FRAM, etc., or may be implemented as a volatile memory such as DRAM, SRAM, SDRAM, PRAM, RRAM, FeRAM, etc. In addition, the memory (110) may be implemented as an HDD, SSD, SD, Micro-SD, etc.

[0085] The devices described above may be implemented as hardware components, software components, and / or a combination of hardware components and software components. For example, the devices and components described in the embodiments may be implemented using one or more general-purpose computers or special-purpose computers, such as a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA), a programmable logic unit (PLU), a microprocessor, or any other device capable of executing instructions and responding to them. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to the execution of the software. For ease of understanding, the processing device is sometimes described as being used alone; however, one of ordinary skill in the art will recognize that the processing device may include multiple processing elements and / or multiple types of processing elements. For example, a processing unit may include multiple processors, or a processor and a controller. Other processing configurations, such as parallel processors, are also possible.

[0086] Although the embodiments have been described above by way of limited examples and drawings, those skilled in the art will appreciate that various modifications and variations may be made from the above teachings. For example, appropriate results may still be achieved if the described techniques are performed in a different order than described, and / or components of the described systems, structures, devices, circuits, etc. are combined or combined in a different form than described, or are replaced or substituted by other components or equivalents.

[0087] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims described below.

[0088] Description of the symbol

[0089] 100: Ultra-fine 3D camera device 110, 310: Probe 111, 311: Fiber optic cable 112: Probe member 120, 320: Optical lens part 121, 314: Protective glass film 122, 322: First lens 123, 323: Splitter 124, 325: Fiber optic bundle 125: Lens part case 126, 324: Second lens 130: Electrical part 131, 341: Light source 132, 342: Image sensor 133: Electrical circuit board 134: ON / OFF switch 135, 141, 151: Signal connection terminal 140: Battery part 142: Battery cell 143: Charging terminal 144: Coupling hook 150: Wired connection part 152: Cable 153 for wired connection: USB connector

[0090] 200: Charger 300: Micro camera combined with portable device 312: Probe handle 313: Probe coupler 330: Case 340: Portable device 343: Display unit

Claims

1. As an ultra-fine 3D camera device, A probe comprising at least one fiber optic cable; A light source unit that irradiates light of the same wavelength or light of different wavelengths to a structure through at least one optical fiber cable; An optical lens unit that detects a reflected light signal reflected by the structure through at least one optical fiber cable and receives the detected reflected light signal and splits the light signal into colors included in the light source unit; An image sensor unit that converts an optical signal formed by color through the optical lens unit into an electrical signal and outputs analog image data; and An ultra-fine 3D camera device comprising an image conversion processing unit that converts analog image data output from the image sensor unit into color-specific digital image data, and performs signal processing on the converted color-specific digital image data to convert it into color image data and output it.

2. In paragraph 1, The above image sensor unit is an ultra-fine 3D camera device that is a phase detection image sensor or a quad phase detection image sensor.

3. In paragraph 2, An ultra-fine 3D camera device in which the image sensor unit obtains phase difference information in the upper and lower directions and left and right directions from at least one optical fiber cable using a phase detection function, calculates optical distance information of each image data using the obtained phase difference information, obtains color-specific imaging data including the calculated optical distance information, and generates 3D image data from the calculated optical distance information.

4. In paragraph 1, The above image conversion processing unit is included in the front part, An ultra-fine 3D camera device, wherein the above-mentioned power unit further includes a control unit that transmits color image data output from the image conversion processing unit to a computing device via a communication unit, a power unit that supplies power to the ultra-fine 3D camera device, and a storage unit that stores digital image data.

5. In paragraph 1, An ultra-fine 3D camera device wherein the optical fiber cable penetrates the body of the probe and protrudes from one end of the probe, and the probe is made of one material selected from the group consisting of stainless steel, titanium, tungsten carbide, nickel-chromium alloy, or a combination thereof for sterilization.

6. In paragraph 1, The optical lens unit includes a first lens, a second lens, an optical fiber bundle, a splitter, a protective glass film, and a lens unit case. The light irradiated from the above light source passes through the optical fiber bundle, is split by the splitter, and then passes through the first lens and is transmitted to the optical fiber cable. An ultra-fine 3D camera device, wherein light reflected from the structure is transmitted through at least one optical fiber cable, passes through the first lens, the splitter, and the second lens, and then is transmitted to the image sensor.

7. An ultra-fine 3D camera device including a probe, an optical lens unit, a power unit, and a battery unit, The probe comprises at least one fiber optic cable, The above-mentioned electric part includes a light source part that irradiates light of the same wavelength or light of different wavelengths to a structure through at least one optical fiber cable, an image sensor that receives an optical signal, an electric circuit board that supports the light source part and the image sensor and includes a circuit that controls the ultra-fine 3D camera, an ON / OFF switch that supplies power, and a first signal connection terminal that receives power from a battery part. The optical lens unit includes an optical fiber bundle that receives and transmits light irradiated from the light source unit, a splitter that disperses the light transmitted from the optical fiber bundle, a first lens that transmits the light dispersed from the splitter to the probe, a second lens that receives light reflected after being irradiated to the structure and transmits it to an image sensor, a protective glass film, and a lens unit case, and the battery unit includes a second signal connection terminal that transmits power to the electric unit, a battery cell, and a charging terminal.

8. In paragraph 7, An ultra-fine 3D camera device, wherein the probe is detachably connected to the optical lens unit, the optical lens unit is detachably connected to the electric unit, and the electric unit and the battery unit are detachably connected to each other.

9. In paragraph 7, An ultra-fine 3D camera device further comprising a charger having a holder function, wherein the charger wirelessly charges the ultra-fine 3D camera device.

10. In paragraph 7, The above image sensor unit is an ultra-fine 3D camera device that is a phase detection image sensor or a quad phase detection image sensor.

11. In paragraph 10, An ultra-fine 3D camera device in which the image sensor unit obtains phase difference information in the upper and lower directions and left and right directions from at least one optical fiber cable using a phase detection function, calculates optical distance information of each image data using the obtained phase difference information, obtains color-specific imaging data including the calculated optical distance information, and generates 3D image data from the calculated optical distance information.

12. In paragraph 7, An ultra-fine 3D camera device, wherein at least one optical fiber cable penetrates the body of the probe and protrudes from one end of the probe, and the probe is made of one material selected from the group consisting of stainless steel, titanium, tungsten carbide, nickel-chromium alloy, or a combination thereof for sterilization.

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