Threaded structured light illuminating lamp, auxiliary light source mouth lamp and mouth observation system

Abstract

The utility model discloses a threaded structured light illuminating lamp, an auxiliary light source mouth lamp and an oral cavity observation system, the threaded structured light illuminating lamp comprises a housing, a battery module, a laser module, a control switch and a Fresnel lens; a light outlet hole is formed in the center of the front end face of the shell, the battery module, the laser module and the Fresnel lens are sequentially arranged in the shell from back to front, and the laser module, the Fresnel lens and the light outlet hole are coaxially arranged; the control switch is arranged outside the shell, and the laser module is electrically connected with the battery module and the control switch. The laser module emits purple electromagnetic waves with the wavelength of 405 nm, and the purple electromagnetic waves are shaped through the Fresnel lens and then output from the light outlet hole. When the illuminating lamp with the threaded structure is used for illuminating teeth, the tooth surface layer fluorescent tissue pathological information can be reserved and presented, and meanwhile, the concave-convex fluctuating curved surface information and the structural line information of the teeth can be more clearly displayed.

Description

Technical Field

[0001] The utility model relates to the technical field of oral medical treatment, in particular to a thread structure light illuminating lamp. Background Art

[0002] In the prior art, the lamps used in dental treatment are mainly oral lamps, which have many characteristics, such as high brightness, good color reproduction, adjustable brightness and color temperature, and flexible operation. The specific inspection scope of oral lamps includes oral examination, which is mainly used to observe tissue structures such as teeth, gums and oral mucosa. In addition, oral lamps also play an important role in oral treatment, covering various basic treatments and aesthetic restorations. The sufficient lighting of oral lamps allows dentists to operate accurately and improve treatment effects and safety.

[0003] However, with the continuous progress and development of oral medicine, dentists are no longer satisfied with simply observing the appearance of oral tissues, but hope to simultaneously observe the bacteria that cause various oral diseases. However, since bacteria cannot be directly observed with the naked eye, in clinic, they often make indirect judgments by observing the color changes of oral tissues under an oral lamp, or by using a probe to palpate the changes in the hardness and softness of the tissues. However, these indicators are difficult to quantify and lack scientific basis, which has become one of the obstacles to the progress of oral medicine.

[0004] In this regard, a Chinese utility model patent (publication number CN114680802A) discloses an instrument for assisting visualized periodontal treatment, namely a 405nm medical examination lamp, which can realize the visualization of dental plaque, tartar, and root caries before, during, and after periodontal treatment surgery, and has received good feedback in the oral field. However, there are still some areas that need to be improved in this device. For example, dental fluorescence photography belongs to the "night photography" technology, which not only requires the photographer to hold the mobile phone steadily, but also the projection excitation light needs to remain stable. The above-mentioned device adopts a handheld projection method, which is prone to shaking, resulting in a less delicate picture; further, dental hygienists in most countries around the world generally adopt a single-operation work mode, and the above-mentioned device requires four-handed operation, resulting in its promotion being not smooth; further, the above-mentioned device uses a light guide rod to homogenize and shape the conical outward beam. Since these electromagnetic waves retain the collimation characteristics of the laser, the fluorescence with a certain tissue depth emitted by the excited tooth tissue and bacterial diseased tissue will be reflected and interfered with each other due to these rich layers of fluorescence, making it difficult to identify the unevenness and arc curvature of the tooth surface and other fine structures. Utility Model Content

[0005] In view of this, the utility model proposes a threaded structured light illuminator, so that when irradiating teeth, while retaining the fluorescent tissue pathological information of the tooth surface, the uneven curved surface information and structural line information of the teeth can be displayed more clearly.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A thread structured light illuminating lamp comprises a housing, a battery module, a laser module, a control switch and a Fresnel lens;

[0008] A light exit hole is provided at the center of the front end surface of the housing, and the battery module, the laser module and the Fresnel lens are sequentially installed in the housing from back to front, and the laser module, the Fresnel lens and the light exit hole are coaxially arranged;

[0009] The control switch is arranged outside the housing, and the laser module is electrically connected to the battery module and the control switch respectively;

[0010] The laser module emits a violet electromagnetic wave with a wavelength of 405 nm, which is shaped by a Fresnel lens and then output from a light exit hole.

[0011] The utility model discloses a threaded structured light illuminating lamp. The Fresnel lens can shape the divergent electromagnetic wave with a wavelength of 405nm emitted by the laser module to form a conical outward-spreading light beam with an elliptical cross-section and interference fringes. The light beam can illuminate the oral tissue of the entire dentition, thereby forming an oral fluorescence observation or photography effect with structured lines, so that the bacterial infection lesions of the oral tissue can be clearly presented, and at the same time, the unevenness of the microstructure of the tooth surface and the change of the arc curvature can be displayed.

[0012] To better implement the above technical solution, optionally, the outer shell includes a front shell cover, a shell and a rear shell cover, the laser module is arranged in the shell, the Fresnel lens is installed in the front shell cover, the light exit hole is opened at the center of the front end surface of the front shell cover, the rear end of the front shell cover is arranged at the front end of the shell in a manner that the distance between the light output end of the laser module and the Fresnel lens can be adjusted, the front end of the rear shell cover is detachably arranged at the rear end of the shell, and the battery module is arranged in the space constructed by the shell and the rear shell cover.

[0013] Optionally, the inner wall at the rear end of the front shell cover is provided with an internal thread, and the outer wall at the front end of the shell is provided with an external thread. The rear end of the front shell cover and the front end of the shell are connected through the internal thread and the external thread in a manner that the distance between the light output end of the laser module and the Fresnel lens can be adjusted.

[0014] Optionally, the distance between the light output end of the laser module and the Fresnel lens is 5-10 mm.

[0015] Optionally, the power of the laser module is 50-200mw.

[0016] Optionally, the fast axis divergence angle of the laser module is 20 to 60°, and the slow axis divergence angle is 10 to 30°.

[0017] Optionally, the optical parameters of the Fresnel lens are: focal length of 10 mm to 25 mm, uniform and equidistant concentric circle thread steps, and thread pitch of 0.2 to 0.4 mm.

[0018] Optionally, the Fresnel lens is made of PMMA acrylic, has a circular shape, a diameter of 10 to 20 mm, and a thickness of 1.5 to 3 mm.

[0019] An auxiliary light source oral cavity lamp, wherein at least one lamp body of the oral cavity lamp adopts the threaded structure light illumination lamp as described in any one of the above items.

[0020] An oral observation system comprises goggles and the auxiliary light source oral lamp. The prevention parameters of the goggles are: 190-540nm, OD6+.

[0021] Beneficial effects of the utility model:

[0022] The utility model is a threaded structured light illuminator, which can not only be used to clearly display the bacterial infection lesions of oral tissues, but also can show the uneven microstructure of the tooth surface and the changes in the curvature of the arc. It meets clinical needs and has the advantages of small and durable equipment, simple operation, sensitive detection, and low cost. In addition, in terms of bacterial fluorescence detection, it is similar to the utility model of CN114680802A, but the concentric circle thread spot technology used greatly improves the sensitivity of observation, so that many low-abundance bacterial infection caries can also be observed, such as cementum caries at the neck of the tooth, secondary caries of dentin in poor fillings, etc., further improving the accuracy and comprehensiveness of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional schematic diagram of a thread structure light illuminating lamp according to Embodiment 1 of the present utility model;

[0024] Figure 2 yes Figure 1 Schematic diagram of the internal structure;

[0025] Figure 3 yes Figure 1 Installation diagram of thread structured light illuminator;

[0026] Reference numerals:

[0027] Front shell cover 10 , light outlet 101 , housing 11 , rear shell cover 12 , battery module 20 , laser module 30 , control switch 40 , Fresnel lens 50 , oral lamp 60 , and holder 61 . DETAILED DESCRIPTION

[0028] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments, wherein the same components are represented by the same reference numerals.

[0029] See also Figures 1 to 3 , the embodiment of the utility model discloses a thread structure light lighting lamp, including a housing, a battery module 20, a laser module 30, a control switch 40 and a Fresnel lens 50;

[0030] like Figure 2 As shown, a light exit hole 101 is provided at the center of the front end surface of the housing, and the battery module 20, the laser module 30 and the Fresnel lens 50 are sequentially installed in the housing from back to front, and the laser module 30, the Fresnel lens 50 and the light exit hole 101 are coaxially arranged;

[0031] The control switch 40 is arranged outside the shell, specifically, the control switch 40 is arranged at the rear end of the shell, and the laser module 30 is electrically connected to the battery module 20 and the control switch 40 respectively; the laser module 30 emits a purple electromagnetic wave with a wavelength of 405nm and is output from the light output hole 101 after being shaped by the Fresnel lens 50.

[0032] In this embodiment, it should be noted that the laser module 30 is composed of a control circuit board and a single laser diode tube, and does not contain a beam shaping lens group. The connection method and fixing method of the control circuit board are connected or fixed by common methods in the prior art, which will not be described in detail here.

[0033] In the use of a thread structured light lighting lamp of the present embodiment, after turning on the control switch 40, the laser module 30 will emit a divergent conical outward beam with an elliptical cross section and uneven energy density distribution, and the beam will then enter the Fresnel lens 50. The surface of the Fresnel lens 50 is divided into a plurality of concentric annular areas, and the thickness and curvature of each annular area are different, which can change the phase of the light wave passing through. When the light beam is irradiated onto the Fresnel lens 50, the phase change caused by different areas will cause the light wave to interfere after passing through the Fresnel lens 50, thereby forming a concentric circle pattern of light and dark alternating.

[0034] The purple electromagnetic wave with a wavelength of 405nm emitted by the laser module 30 is narrowed in divergence angle after being shaped by the Fresnel lens 50, meeting the required lighting distance of the oral lamp 60. At the same time, after the above-mentioned 405nm purple electromagnetic wave is shaped by the Fresnel lens 50, the uneven energy distribution of its divergent beam is improved, forming a relatively uniform concentric light and dark spiral light spot. When this light spot is radiated onto the oral tissue, a group of densely arranged two-dimensional concentric purple excitation lights will be formed. Since the tooth surface tissue is uneven at the microscopic level and has different slope curvatures at the macroscopic level, it will present fluorescent structural lines reflecting its spatial structure.

[0035] In addition, since the 405nm purple electromagnetic wave has the high brightness and collimation of the laser, the laser beam shaped by the Fresnel lens 50 enters the oral hard tissue (such as enamel, cementum, and dentin) to a depth of about 0.2 to 2mm, which can produce a fluorescent stripe with a three-dimensional effect. The middle part of the two adjacent groups of three-dimensional fluorescent stripes will be backlit by the fluorescent side, forming a backlit dark line stripe. These light and dark stripes have a strong wave-like up and down three-dimensional sense. This three-dimensional sense will be weakened on the gums, oral mucosa, and tongue, but will be more obvious in oral lesions such as dental plaque, dental calculus, caries, and dental pulp infection.

[0036] These structural lines can be used to determine the overall continuous curvature and trend of oral tissues, as well as the spatial relationship between various tissues, including local tissues such as the pits and fissures of the crown and the curvature of the slope of each ridge. These fluorescent structural lines can also be observed on the surface of diseased tissues such as dental plaque, tartar, and caries. The observation and shooting of structural lines can not only provide support for clinical diagnosis and treatment, but further, it is also a better artificial AI data source that can accurately reconstruct oral models in 3D and reconstruct 3D oral lesion diagnosis models.

[0037] Normally, most oral tissues have a fluorescent effect, including keratin, collagen fibers, organic and inorganic substances in tooth tissues, etc. In the soft and hard tissues of the oral cavity, the content ratios of these fluorescent substances vary, and the fluorescent structure lines finally formed also show unique particle coarseness, virtual and real sharpness, etc., which can be used to further judge the characteristics of these soft and hard tissues. For example, keratinized gingival loss, enamel aging and demineralization, dentin degeneration, etc.

[0038] Furthermore, when these fluorescent structural lines intersect with tooth cracks or root cracks, the starting position and severity of these cracks will be directly exposed; when the crown is partially defective or split, the trend of the fluorescent structural lines will show obvious angle changes or loss. Through these observations, we can not only understand the conditions of these lesions, but also know their severity more clearly.

[0039] In addition, these fluorescent structural lines can help detect tooth tissue characteristics such as the enamel-cementum junction, abnormal central cusp, and cementum loss.

[0040] Furthermore, oral tissues are prone to various bacterial infections, including dental plaque and calculus in periodontal lesions, caries and pulpitis in dental pulp lesions, etc. When the concentric circle thread spot of the thread structured light illuminator is projected on lesions such as dental plaque, calculus, caries, and pulp infection, not only qualitative analysis can be performed, but also quantitative analysis can be obtained.

[0041] Dental plaque and tartar have a three-dimensional structure with a certain thickness. When the concentric light and dark spiral spots of the spiral structured light illuminator are projected on them, not only the information on the tooth surface coverage can be obtained, but also the three-dimensional information on the thickness of the tooth surface and the structural information of the uneven outer layer can be obtained, which can provide more information for oral pathology analysis.

[0042] These fluorescent structure lines can help to detect surface caries, the pit structure of caries cavities, the abundance of bacteria in the surface disintegration layer of caries cavities, and the migration relationship between the periphery of caries cavities and the tooth surface. In addition, during the caries removal process, it can determine whether the bacterial infection has been completely removed.

[0043] In addition, these fluorescent structural lines can penetrate healthy enamel and discover hidden caries that have invaded the enamel or spread horizontally deep into the dentin, thereby determining the scope of invasion and degree of infection of these caries bacteria.

[0044] Furthermore, these fluorescent structural lines can illuminate demineralized enamel that is discolored or not, and determine whether the enamel has been infected by bacteria and formed caries.

[0045] Furthermore, these fluorescent structure lines can illuminate the cementum at the neck of the tooth to determine whether the cementum has been infected by bacteria and has formed cementum caries. With this pathological information, it can be decided whether further periodontal treatment measures are needed.

[0046] In addition, these fluorescent structure lines can further penetrate the tooth to help detect pulp infection and endogenous caries that invade the dentin from the inside out, thereby further clarifying whether root canal treatment is needed.

[0047] Furthermore, fluorescent structural lines can be used to observe the appearance of various aesthetic restorations and evaluate their relationship with natural tooth structures, including crown restorations, fillings, and dental implants. Previously, in aesthetic restorations, the focus was mainly on material color and the arrangement or fit with natural teeth, while ignoring the unevenness and curvature of the tooth surface, resulting in the inability to match various types of reflected light. With fluorescent structural lines, there is one more parameter to consider in production, which can effectively improve the craftsmanship of aesthetic restorations.

[0048] Furthermore, fluorescent structural lines can be used to determine whether various types of aesthetic restorations have caused secondary caries caused by bacterial invasion, adhesive contamination, bone infection at the implant-bone junction, periodontal tissue infection, etc., so as to prepare for the future and avoid waiting until the aesthetic restoration completely fails before taking remedial measures.

[0049] Furthermore, a threaded structured light illuminator can also be used to examine soft tissue lesions of the oral mucosa, tongue, pharynx, cheek, etc., including abnormalities in their external structure, abnormalities in fluorescence performance, abnormalities in bacterial infection, etc.

[0050] like Figure 2 As shown, the outer shell includes a front shell cover 10, a shell body 11 and a rear shell cover 12, the laser module 30 is installed in the shell body 11, the Fresnel lens 50 is installed in the front shell cover 10, the light emitting hole 101 is opened at the center of the front end surface of the front shell cover 10, the rear end of the front shell cover 10 is arranged at the front end of the shell body 11 in a manner that the distance between the light emitting end of the laser module 30 and the Fresnel lens 50 can be adjusted, the front end of the rear shell cover 12 is detachably arranged at the rear end of the shell body 11, and the battery module 20 is installed in the space jointly constructed by the shell body 11 and the rear shell cover 12.

[0051] Specifically, the inner wall of the rear end of the front shell cover 10 is provided with an internal thread, and the outer wall of the front end of the housing 11 is provided with an external thread. The rear end of the front shell cover 10 and the front end of the housing 11 are connected by the cooperation of the internal thread and the external thread in a manner that the distance between the light-emitting end of the laser module 30 and the Fresnel lens 50 can be adjusted. The distance between the light-emitting end of the laser module 30 and the Fresnel lens 50 is 5-10mm. Preferably, by rotating the front shell cover 10, the distance between the light-emitting end of the laser module 30 and the Fresnel lens 50 can be changed between 5-10mm, thereby realizing the adjustment of the spot size, the width and density of the interference fringes of the spot, which is more convenient for the operation habits of different doctors.

[0052] In an embodiment of the utility model, the fast-axis divergence angle of the laser module 30 is 20 to 60°, and the slow-axis divergence angle is 10 to 30°. Preferably, the fast-axis divergence angle is 40°, and the slow-axis divergence angle is 20°. By selecting a laser module 30 with such parameters, the divergence angle of the light beam can be reasonably controlled within a certain range, thereby ensuring the accuracy and stability of the lighting effect.

[0053] In the embodiment of the utility model, the power of the laser module 30 is 50-200mw. The higher the power of the laser module 30, the higher the heat dissipation requirement of the housing. Therefore, the preferred power of the laser module 30 is 100mw, which not only ensures sufficient lighting intensity, but also avoids overheating caused by excessive power, thus ensuring the safety and reliability of the device.

[0054] In the embodiment of the utility model, the optical parameters of the Fresnel lens 50 are: the focal length is 10mm to 25mm, the concentric circle thread steps are uniformly spaced, and the thread pitch is 0.2 to 0.4mm. Selecting a Fresnel lens 50 with a focal length of 20mm can achieve a rough observation of the intraoral structure, while selecting a Fresnel lens 50 with a focal length of 10mm, the spacing exceeds the limit that can be recognized by the naked eye, and can only be viewed by zooming in after shooting with a mobile phone. This variety of focal length selection meets the requirements of different detection needs and scenarios.

[0055] In the embodiment of the utility model, the Fresnel lens 50 is an outsourced part, which is made of PMMA acrylic, has a circular shape, and a diameter of 10-20 mm. The Fresnel lens 50 with a diameter of 10-20 mm can fully cover all the divergent lasers. This ensures the comprehensiveness and uniformity of the illumination, and improves the accuracy and reliability of the detection.

[0056] like Figure 3 As shown, the threaded structure light illuminating lamp of this embodiment is fixed on the oral light 60 for use. Specifically, a fixture 61 is provided on the outer peripheral surface of the front end of the oral light 60, and the threaded structure light illuminating lamp of embodiment 1 is detachably mounted on the fixture 61.

[0057] It should be noted that the fixer 61 can be an elastic clamp or a fixing hoop. The main purpose of setting the fixer 61 is to fix the threaded structure light illuminator. As long as the threaded structure light illuminator can be stably installed on the oral lamp 60, its specific structure will not be described in detail here.

[0058] In summary, the threaded structured light illuminator provided in this embodiment can not only be used to clearly display the bacterial infection lesions of oral tissues, but also can show the uneven microstructure of the tooth surface and the changes in the curvature of the arc. It meets clinical needs and has the advantages of small and durable equipment, simple operation, sensitive detection, and low cost. In addition, in terms of bacterial fluorescence detection, it is similar to the utility model of CN114680802A, but the concentric circle thread spot technology used greatly improves the sensitivity of observation, so that many low-abundance bacterial infection caries can also be observed, such as cementum caries at the neck of the tooth, secondary caries of dentin in poor fillings, etc., further improving the accuracy and comprehensiveness of the detection.

[0059] Example 2

[0060] This embodiment discloses an auxiliary light source oral cavity lamp based on embodiment 1. At least one lamp body of the oral cavity lamp adopts the thread structure light illumination lamp described in embodiment 1. Adding the thread structure light illumination lamp of embodiment 1 can not only achieve the technical effect of embodiment 1, but also make the oral cavity lamp more convenient to use.

[0061] Example 3

[0062] This embodiment discloses an oral observation system based on Embodiment 2, which includes goggles and the auxiliary light source oral lamp of Embodiment 2. The prevention parameters of the goggles are: 190-540nm, OD6+.

[0063] In this embodiment, in order to obtain better quality structural fluorescent lines, we use laser goggles that can block a wide spectrum of purple, blue, and green from 190nm to 540nm and have an OD6+, which can more thoroughly block high-energy electromagnetic waves that are harmful to the eyes and only expose lower energy electromagnetic waves, making it easier to clearly observe the fluorescent structural lines.

[0064] Preferably, a laser filter with a wide spectrum of purple, blue and green that blocks 190nm to 540nm and an OD of 6.5+ is selected and installed in front of the smartphone lens via Velcro. This can more thoroughly isolate the purple, blue and green electromagnetic waves that interfere more with the image, and only retain light green, yellow, red and other electromagnetic waves, facilitating clear recording and subsequent analysis.

[0065] When using an oral observation system provided by the utility model, first, the assistant assists the patient to sit on the dental chair, then adjusts the chair position to a nearly flat position, puts on a lip protective cover and mouth opener for the patient, and lays a hole towel at the same time, and ensures that the hole towel completely covers the patient's eyes; then, the assistant installs the threaded structured light illuminator wrapped with a protective blue film into the holder of the dental chair oral lamp or directly uses the auxiliary light source oral lamp of Example 2, and the doctor wears anti-purple, blue, and green wide-spectrum laser goggles, and holds a high-performance iPhone mobile phone with computer photography function, macro photography function, and night scene photography function, and the front of the mobile phone is installed with an anti-purple, blue, and green wide-spectrum laser filter. After confirming that the above preparations are completed, the assistant turns off the lighting system of the clinic to ensure that there is no natural direct light in the room, and at the same time presses the control switch of the threaded structured light illuminator, and adjusts the position of the oral lamp and the dental chair to make the elliptical light spot close to the size of the oral opening.

[0066] When the thread structure light is turned on, the diode emits a 405nm electromagnetic wave that passes through a distance of about 8 to 10mm before entering the coaxial Fresnel lens 50. The Fresnel lens 50 changes the light path through the thread structure on its surface and adjusts the light wave phase, thereby forming a dense light and dark concentric interference pattern behind the lens. These concentric thread light spots are projected onto the oral tissues, which can stimulate the tooth surface, gum tissue, etc. to produce different fluorescence, including bright yellow fluorescence of tooth tissue, dim fluorescence of healthy tissue, and orange-red fluorescence produced by bacterial infection. These structural lines can reflect the convexity or concavity of the tissue, which helps to judge the microstructure and curvature changes of the tooth surface.

[0067] Since the projection light is a concentric circle of light and dark spiral spots, when projected vertically, the fluorescence produced by the stimulated oral tissue will also appear as bright line spirals, which we call structural lines. These structural lines will produce shapes with different curvatures as the tissue bulges or recesses. Whether it is a local microscopic or overall macroscopic view, it helps to judge the uneven microstructure and arc curvature changes of the tooth surface.

[0068] Furthermore, due to shooting needs, the spiral structured light illuminator will illuminate at an inclined angle. At this time, the concentric light and dark spiral light spots appear as ellipses, which can also be used for structural line observation.

[0069] The doctor wearing laser goggles first makes a preliminary observation with the naked eye, including adjusting the patient's head position, the angle and distance of the projected light, using a mouth mirror to reflect light, and observing the patient's tongue and palate.

[0070] After making a preliminary observation, the doctor chooses to shoot and record with a mobile phone. Therefore, the doctor holds a mobile phone with a filter, and the assistant adjusts the auxiliary light source oral lamp from vertical projection of the oral plane to an angle of 15 to 30 degrees, which can be from left to right or up and down, depending on the shooting needs, and the doctor shoots from the other side at an angle of 15 to 30 degrees. During the shooting, the thread structured light can be adjusted to obtain a fluorescent structure line map with multiple horizontal and vertical angles, multiple spot intensities, and multiple thread densities to make a correct judgment.

[0071] Research on utility model patent CN114680802A shows that the sensitivity of oral fluorescence depends on the penetration depth, fluorescence coefficient, and brightness of the excitation light. The high-brightness concentric circle threads produced by laser interference used in the utility model thread structure light illuminator have stronger brightness and penetration depth than the divergent light spot of utility model patent CN114680802A. At the same time, due to its light and dark alternating thread structure, the interference caused by the mutual reflection of high-brightness fluorescence is also controlled.

[0072] In view of the above-mentioned advantages of fluorescence observation, threaded structured light illumination can also be used during dental treatment to observe whether the bacterial fluorescence in periodontal treatment, caries treatment, and root canal treatment is completely eliminated, or to carry out fluorescence-guided dental treatment to improve treatment efficiency and success rate.

[0073] In aesthetic restoration, threaded structured light can also be used to determine whether the restoration is tightly connected to the adjacent teeth and whether the curvature of the outer surface is coordinated through structured light.

[0074] After use, the assistant takes off the threaded structured light and keeps it properly, and the clinic resumes normal lighting.

[0075] In clinical practice, more and more dentists begin to pay attention to the research and analysis of tissue pathology, including in vitro tooth research of various clinical failure cases. They can also use threaded structured light illumination and cooperate with mobile phone photography to study the dynamics of various bacteria invading teeth, tooth appearance and tissue structure, etc. This can not only expand the boundaries of their own oral tissue pathology knowledge, but also supplement the deficiencies of current oral tissue pathology research.

[0076] In summary, the oral observation system provided in this embodiment is used to clearly display bacterial infection lesions in oral tissues and to display the uneven microstructure and curvature changes of the tooth surface. It meets clinical needs, and the equipment is small and durable, easy to operate, sensitive to detection, and low in cost.

[0077] It should be pointed out that a threaded structured light illuminator can also be used by one person independently, that is, during the diagnosis and treatment process, the oral light is turned off, and a threaded structured light illuminator is used to reflect the light beam into the local area that needs to be observed by skillfully adjusting the angle of the mouth mirror, so as to comply with the clinical operating practices of professional dental hygienists around the world.

[0078] It should be pointed out that the threaded structured light illuminator can also be used for histopathological examination of ex vivo teeth. Two sets of brackets that can rotate 360° and pitch up and down are used to fix the threaded structured light illuminator and the smart phone. By appropriately reducing the ambient light brightness and adjusting the projection beam and shooting angle, fluorescent photos with fluorescent structure lines can be taken to clearly see the shape and structure of the tooth surface and the symptoms of bacterial infection.

[0079] The technical solution of the utility model is described in detail above in combination with specific embodiments, and the described specific embodiments are used to help understand the concept of the utility model. Derivations and variations made by those skilled in the art based on the specific embodiments of the utility model also fall within the protection scope of the utility model.

Claims

1. A threaded structured light illuminating lamp, characterized in that: It comprises a housing, a battery module (20), a laser module (30), a control switch (40) and a Fresnel lens (50); A light exit hole (101) is provided at the center of the front end surface of the housing, and the battery module (20), the laser module (30) and the Fresnel lens (50) are sequentially installed in the housing from back to front, and the laser module (30), the Fresnel lens (50) and the light exit hole (101) are coaxially arranged; The control switch (40) is arranged outside the housing, and the laser module (30) is electrically connected to the battery module (20) and the control switch (40) respectively; The laser module (30) emits a violet electromagnetic wave with a wavelength of 405 nm, which is shaped by a Fresnel lens (50) and then output from a light output hole (101).

2. The thread structured light illuminating lamp according to claim 1, characterized in that: The housing comprises a front shell cover (10), a shell (11) and a rear shell cover (12); the laser module (30) is installed in the shell (11); the Fresnel lens (50) is installed in the front shell cover (10); the light exit hole (101) is opened at the center of the front end surface of the front shell cover (10); the rear end of the front shell cover (10) is detachably installed on the front end of the shell (11) in a manner that the distance between the light exit end of the laser module (30) and the Fresnel lens (50) can be adjusted; the front end of the rear shell cover (12) is detachably installed on the rear end of the shell (11); and the battery module (20) is installed in a space constructed by the shell (11) and the rear shell cover (12).

3. The thread structured light illuminating lamp according to claim 2, characterized in that: The inner wall of the rear end of the front shell cover (10) is provided with an internal thread, and the outer wall of the front end of the shell (11) is provided with an external thread. The rear end of the front shell cover (10) and the front end of the shell (11) are connected via the internal thread and the external thread in a manner such that the distance between the light output end of the laser module (30) and the Fresnel lens (50) can be adjusted.

4. The thread structured light illuminating lamp according to claim 3, characterized in that: The distance between the light output end of the laser module (30) and the Fresnel lens (50) is 5-10 mm.

5. The thread structured light illuminating lamp according to claim 1, characterized in that: The power of the laser module (30) is 50-200 mw.

6. The thread structured light illuminating lamp according to claim 1, characterized in that: The fast axis divergence angle of the laser module (30) is 20 to 60 degrees, and the slow axis divergence angle is 10 to 30 degrees.

7. The thread structured light illuminating lamp according to claim 1, characterized in that: The optical parameters of the Fresnel lens (50) are: focal length of 10 mm to 25 mm, uniform and equidistant concentric circle thread steps, and thread pitch of 0.2 to 0.4 mm.

8. The thread structured light illuminating lamp according to claim 1, characterized in that: The Fresnel lens (50) is made of PMMA acrylic and has a circular shape, a diameter of 10 to 20 mm, and a thickness of 1.5 to 3 mm.

9. An auxiliary light source oral lamp, characterized in that: At least one lamp body of the oral lamp adopts the threaded structure light lighting lamp as described in any one of claims 1 to 8.

10. An oral observation system, comprising goggles, characterized in that: It also includes the auxiliary light source oral lamp as described in claim 9, and the prevention parameters of the goggles are: 190-540nm, OD6+.

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