Multifunctional red light irradiation device

Abstract

The utility model relates to a multifunctional red light irradiation device which is characterized by comprising a red light irradiation assembly which is used for irradiating fundus by using red light so as to carry out myopia physiotherapy; the fundus imaging assembly is used for imaging the fundus; the lens cone is used for packaging at least one of the red light irradiation assembly and the fundus imaging assembly, and in the lens cone, the red light irradiation assembly and the fundus imaging assembly share part of optical assemblies so as to irradiate the fundus and / or image the fundus. According to the red light irradiation device, by sharing part of the optical assemblies, the fundus red light irradiation assembly and the fundus imaging assembly can be integrated on a single device at the same time, and therefore the multiple functions of conducting red light irradiation on the fundus, conducting imaging on the fundus and the like are achieved.

Description

Technical Field

[0001] The utility model generally relates to the field of optics, and more specifically, relates to a red light irradiation device. Background Art

[0002] With the popularity and widespread use of electronic screens, the problem of myopia among teenagers has become more and more serious. In order to protect eyesight and effectively control the occurrence of myopia, low-intensity red light is currently used to irradiate the fundus. Specifically, the low-intensity red light device that irradiates the fundus can accurately simulate the beneficial light of sunlight by irradiating low-energy red lasers to the macular area. Through such irradiation, the blood circulation of the fundus can be improved, the secretion of dopamine by retinal pigment epithelial cells can be promoted, the thinned choroid can be restored to normal, and sufficient oxygen can be supplied to the sclera, thereby strengthening the strength of the sclera. Ultimately, the effect of inhibiting the abnormal growth of the eye axis can be achieved, thereby achieving effective prevention and control of myopia.

[0003] Although red light irradiation is effective for the prevention, control and correction of myopia as described above, the devices used for red light irradiation currently have certain shortcomings. For example, the current red light irradiation devices have a single function and cannot provide functions other than red light irradiation, thus failing to meet the requirements of more users. Utility Model Content

[0004] In view of the technical problems mentioned above, the utility model provides a multifunctional red light irradiation device. Through the red light irradiation device, red light irradiation and fundus photography of the fundus can be realized on a single device, thereby providing multifunctional services to users. To this end, the utility model provides a multifunctional red light irradiation device, characterized in that it includes: a red light irradiation component, which operates to irradiate the fundus with red light; a fundus imaging component, which operates to image the fundus; a lens barrel, which is used to encapsulate at least one of the red light irradiation component and the fundus imaging component, wherein in the lens barrel, the red light irradiation component and the fundus imaging component share some optical components to achieve irradiation of the fundus and / or imaging of the fundus.

[0005] In one embodiment, the red light irradiation device further includes a positioning component, which is arranged inside or outside the lens barrel relatively close to two sides of the eyeball for positioning the eyeball.

[0006] In one embodiment, the positioning assembly includes two positioning cameras, which are arranged along the circumference outside the lens barrel or inside the lens barrel respectively, so as to realize the positioning of the eyeball by imaging the ocular surface of the eyeball.

[0007] In one embodiment, the number of the lens barrels is one or two, and when the positioning camera is arranged along the circumference inside the lens barrel, an illumination light source is also arranged in the red light irradiation device so as to illuminate the eyeball when the positioning camera images the ocular surface of the eyeball.

[0008] In one embodiment, when the lens barrel is single, the red light irradiation device further comprises a lens barrel moving mechanism, which is connected to the control module and is used to drive the lens barrel to move from a position aligned with one eyeball to a position aligned with another eyeball.

[0009] In one embodiment, a plurality of moving platforms are further included, wherein the plurality of moving platforms have respective directions and the red light irradiation component and the fundus imaging component are arranged on one of the moving platforms.

[0010] In one embodiment, the multiple mobile platforms include a first mobile platform, a second mobile platform and a third mobile platform, wherein the first, second and third mobile platforms are slidably connected and the red light irradiation component and the fundus imaging component are arranged on the first mobile platform, and the first, second and third mobile platforms are operated to move the red light irradiation component and the fundus imaging component according to the positioning of the eyeball.

[0011] In one embodiment, the red light irradiation device further includes: a control module, which is connected to the red light irradiation component and the fundus imaging component respectively, so as to operate the red light irradiation device to irradiate the fundus and / or image the fundus.

[0012] In one embodiment, the red light irradiation component includes a red light source and the fundus imaging component includes an imaging light source, and the control module is used to control the turning on and off of the red light source and the imaging light source so that the red light irradiation device is operated to irradiate and / or image the fundus.

[0013] In one embodiment, the red light source and the imaging light source are arranged at a certain interval along the axial direction of the lens barrel, and are turned on or off respectively via the control module.

[0014] In one embodiment, the red light source is fixedly arranged outside the lens barrel or inside the lens barrel at a position outside the lens barrel axis, and is turned on by the control module to emit red light.

[0015] In one embodiment, a reflecting prism is disposed in the lens barrel, and the red light is refracted by the reflecting prism disposed in the lens barrel so as to illuminate the fundus.

[0016] In one embodiment, a pop-up reflector or a thin film beam splitter is disposed in the lens barrel, and the red light is reflected by the pop-up reflector or the thin film beam splitter so as to illuminate the fundus.

[0017] In one embodiment, the red light irradiation device also includes a light source moving mechanism connected to the control module, wherein when the fundus is irradiated, the light source moving mechanism moves the red light source from a position outside the barrel or outside the barrel axis inside the barrel to the barrel axis under the control of the control module, and when imaging the fundus, the moving mechanism moves the red light source from the barrel axis to a position outside the barrel or outside the barrel axis inside the barrel under the control of the control module.

[0018] In one embodiment, the fundus imaging component includes a fundus sensor for acquiring fundus images, and a bandpass filter for filtering out red light is arranged between the red light source of the red light irradiation device and the fundus sensor.

[0019] In one embodiment, the red light irradiation component also includes an amplifying optical path, which is used to receive the red light emitted by the red light source and amplify it.

[0020] In one embodiment, the control module further includes a first control module for controlling the red light irradiation component based on a current physiological condition of the fundus, wherein the current physiological condition of the fundus is obtained by analyzing the fundus imaging via the fundus imaging component.

[0021] In one embodiment, in analyzing the fundus imaging to obtain the current physiological condition of the fundus, the fundus imaging component operates to: judge abnormal changes in the fundus imaging to determine the current physiological condition related to the fundus.

[0022] In one embodiment, in controlling the red light irradiation component based on the current physiological condition of the fundus, the first control module operates to: in response to abnormal changes in the current physiological condition of the fundus, control the start, continuation, enhancement, reduction or stop of the red light irradiation of the fundus.

[0023] In one embodiment, the control module further includes a second control module for controlling the red light irradiation component based on a current physiological condition of the ocular surface, wherein the current physiological condition of the ocular surface is obtained by analyzing the ocular surface image via the positioning component.

[0024] In one embodiment, in analyzing the ocular surface image to obtain the current physiological condition of the ocular surface, the positioning component is further used to: perform morphological and / or light reflection analysis on the pupil in the ocular surface image to determine the current physiological condition related to the pupil; and / or perform abnormal change judgment on the ocular surface image to determine the current physiological condition related to the ocular surface.

[0025] In one embodiment, in controlling the red light irradiation component based on the current physiological condition of the ocular surface, the second control module is further used to: in response to the pupil being too large or too small or having abnormal light reflection, or in response to abnormal changes in the ocular surface, control the start, continuation, enhancement, reduction or cessation of red light irradiation to the fundus.

[0026] By using the red light irradiation device of the present invention, it is possible to irradiate and / or image the fundus on a single device. Specifically, by encapsulating at least one of the red light irradiation component and the fundus imaging component in the lens barrel and sharing some optical components, the red light irradiation device of the present invention can achieve flexible switching between red light irradiation of the fundus and imaging of the fundus. In some application scenarios, the solution of the present invention also supports the simultaneous red light irradiation of the fundus and imaging of the fundus. In other application scenarios, by innovatively setting the optical path in the lens barrel, the red light irradiation device of the present invention makes it possible to irradiate the fundus with red light and to image the fundus without interfering with each other, thereby achieving high-quality red light irradiation and accurate fundus imaging. In some application scenarios, through the multiple mobile platforms of the present invention, it is possible to move the red light irradiation device to a suitable position to achieve effective red light irradiation and fundus imaging.

[0027] In some application scenarios, the red light irradiation device of the present invention can also obtain the current physiological condition of the eyeball by analyzing the ocular surface image and / or the fundus image, and control the red light irradiation based on this. Through such control operations, by, for example, acquiring the ocular surface image and / or the fundus image in real time or quasi-real time and analyzing it, the scheme of the present invention can determine the current physiological condition of the eyeball, so that the corresponding red light irradiation control can be performed based on the current physiological condition, such as selecting to irradiate the fundus with red light, controlling to continue to irradiate the fundus with red light during irradiation, or controlling to stop red light irradiation. Thus, the scheme of the present invention can realize the control of red light irradiation of the fundus. In some embodiments, with the help of neural network models or other computer vision algorithms in the field of artificial intelligence, the scheme of the present invention can make an accurate judgment on the current physiological condition of the eyeball by analyzing the ocular surface or fundus image, so as to make subsequent control operations more reliable and precise. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0029] Figure 1 It is a principle block diagram showing the red light irradiation device of the utility model;

[0030] Figure 2 is an exemplary structural block diagram showing a red light irradiation device of the present utility model;

[0031] Figure 3 is a structural block diagram showing a red light irradiation device according to a first embodiment of the utility model;

[0032] Figure 4 is a structural block diagram showing a red light irradiation device according to a second embodiment of the utility model;

[0033] Figure 5 is a structural block diagram showing a red light irradiation device according to a third embodiment of the utility model;

[0034] Figure 6 is a structural block diagram showing a red light irradiation device according to a fourth embodiment of the present utility model;

[0035] Figure 7a is a first perspective stereoscopic diagram showing a red light irradiation device according to a fourth embodiment of the utility model;

[0036] Figure 7b is a second perspective perspective view of a red light irradiation device according to a fourth embodiment of the utility model;

[0037] Figure 7c is a third perspective perspective view of a red light irradiation device according to a fourth embodiment of the present utility model; and

[0038] Figure 7d 4 is a perspective view showing a red light irradiation device according to a fourth embodiment of the present utility model. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0040] As mentioned above, in order to realize a multifunctional red light irradiation device, the solution of the utility model proposes to integrate red light irradiation and fundus photography into a single device. Thus, users can switch between red light irradiation and fundus photography arbitrarily according to different needs, thereby obtaining a good user experience. In order to achieve simplification and portability in design, the solution of the utility model selects to integrate at least one of the red light irradiation component and the fundus imaging component in the red light irradiation device, and makes the two share part of the optical components. Specifically, the solution of the utility model utilizes a lens barrel to encapsulate all or part of the two, thereby realizing effective switching of the optical path in the lens barrel. In some implementation scenarios, the solution of the utility model also selects to add a filter component so as to completely isolate the red light when taking photos of the fundus, thereby obtaining high-quality fundus imaging. In other implementation scenarios, the solution of the utility model also sets a positioning component (such as a positioning camera) on the lens barrel so as to accurately position the eyeball, so that red light irradiation and fundus imaging can be performed more effectively.

[0041] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0042] Figure 1 1 is a block diagram showing the principle of the red light irradiation device 100 of the present invention. Figure 1 As shown in, the red light irradiation device 100 includes a red light irradiation component 102 and a fundus imaging component 104, wherein the red light irradiation device is operated to irradiate the fundus of the eyeball 106 with red light, and the fundus imaging component 104 is operated to image the fundus. Further, the red light irradiation device also includes a lens barrel 110 with an opening 108. Although the lens barrel is shown here to completely encapsulate the red light irradiation component and the fundus imaging component inside it, the encapsulation here can also be a partial encapsulation. For example, in an application scenario, most of the optical devices in the fundus imaging component and the red light irradiation component can be selected to be encapsulated in the lens barrel, and a small part of the optical devices of the red light irradiation component can be arranged outside the lens barrel, such as a red light source device (such as a light emitting diode). By placing the optical devices that are easy to interfere with fundus imaging outside the lens barrel, the solution of the utility model can ensure that the red light irradiation operation does not have a negative impact and interference on the fundus imaging operation to the greatest extent.

[0043] It is understandable that, although the above refers to the device that the red light irradiation assembly and the fundus imaging assembly are packaged with the lens barrel, the lens barrel here is only exemplary. According to different application scenarios, the lens barrel can have different cross-sectional shapes rather than only the shape of a barrel. In addition, the lens barrel can also have a relatively large size in some practical application scenarios to accommodate more optical devices, circuit devices or wiring, etc. Further, the lens barrel can also have a multi-layer arrangement, such as in the lens barrel 108 shown, a shell-shaped encapsulation can also be arranged again, for encapsulating the red light irradiation device and the fundus imaging device, and other auxiliary or additional components, modules or units can be added between the encapsulation and the lens barrel to provide more auxiliary functions. In this scenario, the red light source mentioned above can be arranged between the aforementioned encapsulation and the lens barrel to achieve isolation between red light irradiation and fundus imaging.

[0044] In addition, in order to realize the irradiation and imaging of a single eyeball or two eyeballs, the scheme of the utility model does not limit the number of lens barrels. Based on this, the red light irradiation device of the utility model can be implemented as a monocular or binocular device. When implemented as a monocular red light irradiation device, a single eyeball can be irradiated with red light and imaged. Thereafter, another eyeball can be irradiated with red light or imaged with the fundus by moving the red light irradiation device or making the user move. In the scene of the mobile monocular red light irradiation device, the red light irradiation device of the utility model can also be provided with a lens barrel moving mechanism, which can be connected to the control module so as to drive a single lens barrel to move from the position of an eyeball (such as the left eye) to the position of another eyeball (such as the right eye). Relatively, when implemented as a binocular red light irradiation device, the fundus of two eyeballs can be irradiated with red light or imaged with the fundus at the same time. In this case, the user does not need to move his head to adjust the eyeball position, so that the red light irradiation or fundus imaging is faster or more efficient.

[0045] Through the multifunctional red light irradiation device of the utility model as described above, red light irradiation and fundus imaging of the fundus can be achieved on a single device, and such an arrangement will produce positive and beneficial effects. Specifically, by using the red light irradiation device of the utility model, the user can irradiate the fundus with red light to improve the myopia problem, and at the same time, can determine the health status of the fundus by taking pictures of the fundus when necessary. For example, by taking pictures of the fundus and analyzing the fundus image, potential diseases or risks related to the fundus can be determined so that human intervention can be carried out in time. In addition, since red light irradiation and fundus photography are integrated, users will no longer need to purchase corresponding light-feeding devices (for red light irradiation) and fundus cameras (for fundus imaging) for red light irradiation and fundus photography respectively, thereby providing users with good convenience of use and reducing the cost of use to some extent.

[0046] Figure 2 FIG. 2 is an exemplary structural block diagram of a red light irradiation device 200 of the present invention. As can be understood from the contents shown in the figure, the red light irradiation device 200 includes Figure 1 The red light irradiation device 100 is shown in more detail and can therefore be regarded as Figure 1 In view of this, the above description of the red light irradiation device 100 is also applicable to the following description of the red light irradiation device 100. Figure 2 Description of the red light irradiation device 200.

[0047] like Figure 2 As shown in FIG. , the red light irradiation device 200 includes: Figure 1 The red light irradiation assembly 102 (which may constitute a light-feeding instrument) and the fundus imaging assembly 104 (which may constitute a fundus camera) shown in the figure have their own red light source and imaging light source. Here, the red light source may be various light source devices including a laser head that can emit low-intensity red light (e.g., red light of about 650 nanometers ("nm")), which may pass through the opening 108, through the pupil of the eyeball 106 and irradiate the fundus through, for example, a collimating lens arranged on the optical path in the lens barrel. Further, the imaging light source for fundus photography may be two white light sources, for example, two symmetrical lamps on a diameter line on a coaxial illumination ring around the lens barrel 110.

[0048] Further shown in the red light irradiation device 200 is a control module 112, which may also be referred to as a control module or a control unit. In an implementation scenario, the control module 112 is connected to the red light irradiation component and the fundus imaging component respectively (e.g., a wired electrical connection) so that the red light irradiation device of the utility model operates to irradiate the fundus and / or image the fundus. Specifically, the control module can be used to control the opening and closing of the red light source and the imaging light source, thereby controlling the red light irradiation device to switch between irradiating the fundus and imaging the fundus. In some application scenarios, it generally takes tens of milliseconds ("ms"), such as 10ms to 20ms, to take a fundus picture. Therefore, the control module can turn off the red light irradiation for 20ms at intervals (e.g., 5 seconds), and start the imaging light source within this 20ms to complete the acquisition of the fundus image.

[0049] In order to realize the positioning of the eyeball (especially the pupil), the red light irradiation device 200 is additionally equipped with positioning components 114 and 116 for determining the precise position of the eyeball during red light irradiation or fundus imaging. In one implementation, the positioning component here can be a positioning camera, such as a first positioning camera and a second positioning camera, which can be arranged in the circumference outside the lens barrel for imaging the eye surface of the eyeball. In some implementation scenarios, the first positioning camera and the second positioning camera can also be arranged in the lens barrel, such as along the circumferential arrangement in the lens barrel. When the aforementioned positioning camera is arranged in the lens barrel of the red light irradiation device, then at this time, in order to effectively shoot and position the positioning camera, one or more separate illumination sources can be arranged in the lens barrel (such as the periphery of the positioning camera). Through the illumination of the eyeball by the illumination light source, the positioning camera can realize the shooting of the eye surface at a certain brightness, which also helps the subsequent positioning of the eyeball.

[0050] By means of the principle of stereo positioning, the first and second positioning cameras obtain the features of the ocular surface (such as the pupil) from different positions and viewing angles, thereby locating the position of the eyeball or the pupil relative to the lens barrel. Afterwards, the control module can move the red light irradiation component, the fundus imaging component, or the entire lens barrel according to the aforementioned position information, so as to align the fundus of the eyeball to achieve efficient red light irradiation or fundus imaging. Figure 7a to Figure 7d To describe various moving mechanisms for moving the red light irradiation device of the present invention.

[0051] In addition to the above-mentioned control operations, in some application scenarios, the utility model also proposes to determine the current physiological condition of the eyeball by analyzing the fundus image and / or the ocular surface image, so as to control the red light irradiation based on this, thereby achieving red light irradiation. To this end, the above-mentioned control module may also include a first control module, which operates to control the red light irradiation component based on the current physiological condition of the fundus, wherein the current physiological condition of the fundus is obtained by analyzing the fundus imaging component. Specifically, in analyzing the fundus imaging to obtain the current physiological condition of the fundus, the fundus imaging component operates to: judge abnormal changes in the fundus imaging to determine the current physiological condition related to the fundus. In response to abnormal changes in the current physiological condition of the fundus, the first control module operates to control the start, continuation, enhancement, weakening or stop of the red light irradiation of the fundus.

[0052] In some application scenarios, the control module may further include a second control module, which is operated to control the red light irradiation component based on the current physiological condition of the ocular surface, wherein the current physiological condition of the ocular surface is obtained by analyzing the ocular surface image via the positioning component. As an example, in analyzing the ocular surface image to obtain the current physiological condition of the ocular surface, the positioning component is operated to perform morphological and / or light reflection analysis on the pupil in the ocular surface image to determine the current physiological condition related to the pupil; and / or to perform abnormal change judgment on the ocular surface image to determine the current physiological condition related to the ocular surface. Based on this, in response to the pupil morphology being too large, too small, or the presence of abnormal light reflection, or in response to abnormal changes in the ocular surface, the second control module may be operated to control the start, continuation, enhancement, weakening, or cessation of red light irradiation of the fundus.

[0053] Further, in terms of the ocular surface image, its abnormal changes may, for example, involve the size of the pupil of the eyeball, whether the ocular surface is red or has bleeding spots, etc. As an example, the analysis of the present invention may involve using, for example, a neural network model that identifies the congestion of the ocular surface conjunctiva to identify the ocular surface image, thereby determining whether the eyeball in the ocular surface image is congested, that is, whether it is red or has bleeding spots. Similarly, in terms of the fundus image, its abnormal changes may, for example, involve the presence, bleeding, exudation and / or other lesions in the macula, optic cup, optic disc, artery and vein in the fundus image.

[0054] Figure 3 is a block diagram showing the structure of the red light irradiation device 300 according to the first embodiment of the present utility model. It can be understood that Figure 3 The red light irradiation device 300 shown is only Figure 1 and Figure 2 A possible implementation of the red light irradiation device shown in FIG. Figure 1 and Figure 2 The description also applies to the red light irradiation device 300 .

[0055] like Figure 3As shown, the red light irradiation device 300 includes a lens barrel 110, in which a red light irradiation component and a fundus imaging component are encapsulated. Specifically, the red light irradiation component includes a red light source 120, which is optically conjugate (or confocal) relative positional relationship with a fundus sensor 122 for fundus imaging about a prism 128. In order to fully isolate red light, the utility model arranges a filter 124 before the fundus sensor 122. As an example, a bandpass filter with a cutoff of 650nm±10nm can be set before the fundus sensor, so that stray light formed by the red light source at the prism position can be eliminated. Using the optical path 130 schematically shown in the figure, for example, including an eyepiece group and an objective lens group, the red light irradiation component can make the light 132 finally pass through the collimating lens 126 (which serves as a common optical device) to irradiate the eyeball 106 when the red light source is started, specifically through the pupil to irradiate the fundus.

[0056] In order to realize good imaging to fundus, imaging light source 118 is also provided in the lens barrel 110 of red light irradiation device 300, which will irradiate the fundus of eyeball through collimating lens 126 when it is started under the control of control module, so that imaging sensor can complete the collection of fundus image via optical path 130 and collimating lens 126. In this example, optical path 130 can also be called imaging rear group, which can include multiple lenses, such as meniscus lens, biconvex lens and interdigitated lens etc. According to the difference of implementation, optical path 130 can have different optical devices, and the utility model is not limited in this respect. As mentioned above, in order to realize effective red light irradiation and fundus photography, red light irradiation device 300 is also provided with positioning assembly 114 (such as positioning camera) on both sides of lens barrel, for positioning eyeball, so that lens barrel can be adjusted to suitable and safe position by mobile mechanism according to positioning result to irradiate fundus or take pictures.

[0057] In one implementation scenario, the positioning component may include two positioning cameras, and each positioning camera is used to collect an ocular surface image to obtain the positioning information of the eyeball. In one implementation scenario, the control module 112 may be, for example, a microcontroller unit (MCU). Specifically, the control module 112 may determine the spatial position of its ocular surface features based on the ocular surface image, and then control the moving mechanism (such as the light source moving mechanism) to move the lens barrel in one or more directions based on the spatial position, so that the red light irradiation component can realize the red light irradiation of the fundus.

[0058] Specifically, first, the eye surface features (such as pupils) can be detected by the target detection method based on the collected eye surface images. Then, the spatial position of the eye surface feature can be calculated based on the position difference of the same eye surface feature detected on the two eye surface images. In an implementation scenario, the correspondence between the world coordinate system (that is, the spatial position) and each actuator can be established based on the position coordinates of the same eye surface feature on the two eye surface images, so as to convert the difference between the pupil position obtained by the two positioning cameras and the position of the lens barrel movement in the coordinate system into the moving step of each actuator. Based on the moving step of each actuator, the control module can be used to control the moving mechanism to move the corresponding step in the corresponding direction to move the lens barrel to the target position.

[0059] In some embodiments, it is also possible to determine whether the lens barrel has moved to the ideal position based on the target position. If it is not in the ideal position, continue to collect ocular surface images to determine the spatial position of ocular surface features; if it is in the ideal position, it is also possible to determine whether the pupil size and shape are in an ideal state. If so, red light irradiation or imaging of the fundus is performed. On the contrary, when the pupil size and shape are not in an ideal state (for example, the pupil is small), the user can be reminded to adjust the state of the eyeball, such as reminding the user to "open his eyes wide" or "look forward", and then collect ocular surface images, and repeat the above operations until the ideal state or ideal position is met. Based on this, positioning information can be obtained in real time, and the position of the lens barrel can be adjusted accurately and timely to ensure good irradiation and photography effects.

[0060] Figure 4 2 is a block diagram showing the structure of a red light irradiation device 400 according to a second embodiment of the present invention. Figure 4 As can be seen from the contents shown in , the red light irradiation device 400 has a similar structure and arrangement to the red light irradiation device 300, such as the positions of the red light source and the imaging light source and the setting of the light path. However, the red light irradiation device 400 is provided with an amplifying light path 134 for increasing the light power between the red light source 120 and the prism, and the amplifying light path 134 can be set according to the light emitting surface of the laser head of the light source and the efficiency to be achieved.

[0061] Figure 5: is a block diagram showing a red light irradiation device 500 according to the third embodiment of the utility model. As shown in the figure, it can be seen that the red light irradiation device 500 has similar components and structural arrangements as the aforementioned red light irradiation devices 300 and 400, except for the arrangement of the red light source. In the red light irradiation device 500, the red light source 120 is arranged at a certain interval with the imaging light source 118 along the axial direction of the lens barrel. Further, the red light source is arranged to be able to move back and forth between the position of the lens barrel axis outside the lens barrel and inside the lens barrel. To achieve such movement, the utility model also proposes to set a light source moving mechanism connected to the control module, wherein when the fundus is irradiated with red light, the moving mechanism moves the red light source from the position outside the lens barrel to the axis of the lens barrel under the control of the control module. Correspondingly, when the fundus is imaged, the light source moving mechanism moves the red light source from the axis of the lens barrel to the outside of the lens barrel under the control of the control module.

[0062] Although the red light source in the red light irradiation device 500 is located on the axis of the lens barrel when it is started, and the imaging light source is arranged at a position in the lens barrel that is offset from the axis of the lens barrel, such an arrangement is only exemplary and not restrictive. Those skilled in the art can also think of other arrangements based on the teachings of the utility model. For example, when it does not affect normal fundus imaging, the red light source (such as a laser head) can also be arranged in the lens barrel that is offset from the axis of the lens barrel (such as Figure 5 The imaging light source is arranged on the axis of the lens barrel. In this application scenario, when red light irradiation is required, the light source moving mechanism can be activated to move the red light source from a position outside the axis of the lens barrel to the axis, and the imaging light source can be turned off, so that the fundus can be irradiated with red light. Correspondingly, when the red light source is moved away from the axis of the lens barrel and the imaging light source is turned on, fundus imaging operation can be performed.

[0063] Figure 6 is a block diagram showing the structure of a red light irradiation device 600 according to the fourth embodiment of the present invention. Figure 6 As shown in FIG. , the red light irradiation device 600 has Figure 5The structure and arrangement of the red light irradiation device 500 shown in FIG. However, unlike the embodiment in which the red light source 120 is moved relative to the axis of the lens barrel in the red light irradiation device 500, a pop-up reflector or a thin film beam splitter 604 (diameter, for example, can be 2 mm, to only block part of the field of view) is placed at the rear focus position of the objective lens in the red light irradiation device 600 in this embodiment. When it is necessary to utilize the red light source 120 and perform red light irradiation through the lens group, the reflector or the thin film beam splitter can be cut in at this time to achieve irradiation of the fundus. In this case, the fundus can be previewed in addition to a small area of ​​the central field of view being blocked, except that the fundus of the other fields of view is blocked. Therefore, when it is necessary to observe the central field of view blocking area, the reflector can be directly removed, so that the photographing of the fundus image can be achieved.

[0064] Figures 7a to 7d is a stereogram showing different viewing angles of the red light irradiation device according to the fourth embodiment of the utility model. It is understandable that, in order to facilitate further understanding of the operating principle of the red light irradiation device of the utility model, the accompanying drawings further show a plurality of mobile platforms for the red light irradiation assembly and the fundus imaging assembly, such as the mobile platforms 701, 702 and 705 shown in the drawings. These mobile platforms have their own degrees of freedom and when driven by a driving mechanism such as a motor or a belt, drive the red light irradiation device of the utility model to move in different ways, so as to efficiently align the fundus for red light irradiation and / or fundus photography. It should be noted that the mobile platform shown in the figure is an optional component of the red light irradiation device of the utility model, and when integrated with the red light irradiation device described above in the utility model, it can constitute another red light irradiation device as a whole, that is, a red light irradiation device with a mobile platform. For the sake of convenience of understanding, the following description is still made according to the separated red light irradiation device and the mobile platform.

[0065] like Figure 7a and Figure 7b As shown in the figure, the human eyeball 106 is at the red light irradiation or fundus photography position of the red light irradiation device of the present invention, and the red light irradiation device of the present invention described above is arranged on the mobile platform 703. Specifically, the positioning component 114, the reflector 604, the red light source 120 and the fundus imaging system 722 arranged on the mobile platform 703 can be seen. For the simplicity of the diagram, the aforementioned fundus sensor, the filter arranged in front of the fundus sensor, and the optical path, etc. can all be included in the fundus imaging system.

[0066] As described above, in order to accurately align the eyeball 106, the utility model also proposes to use multiple mobile platforms to move the red light irradiation device, so that the irradiation or photography method can be adjusted to the best position. As an example, the utility model provides a first mobile platform 702, a second mobile platform 703 and a third mobile platform 704 supported by a base 701. Specifically, on the base 701, the first mobile platform 702 can slide back and forth as needed on the slide rail 708 in the direction of the arrow shown in 716. Further, on the first mobile platform 702, the second mobile platform 703 can slide up and down as needed on the slide bar 710 in the direction of the arrow shown in 706. In order to prevent excessive sliding, a top cover 712 is also arranged to limit the up and down sliding. In addition, on the second mobile platform 703, the third mobile platform 704 can slide back and forth as needed on the slide rail 714 in the direction of the arrow shown in 705. It can be seen that the three mobile platforms can make the red light irradiation device of the utility model move in three degrees of freedom, thereby achieving the goal of aligning the eyeball. Regarding the specific movement operation, it can be implemented by a driving mechanism connected to the control module. According to different implementation scenarios, the driving mechanism here can be a motor, a lead screw or a belt installed on the corresponding mobile platform, and is controlled by the control module of the utility model to achieve the corresponding movement. As mentioned above, the direction and distance of movement here can be determined based on the positioning result of the positioning camera.

[0067] For ease of understanding, Figure 7c and Figure 7d The red light irradiation device and the mobile platform of the present invention are shown in another angle. It can be understood that the mobile platform and its driving method are only exemplary, and those skilled in the art can also think of other ways to realize the combination of the present invention and the mobile platform and the driving method according to the teaching of the present invention. Figure 1 to Figure 6 In addition, although the present invention uses a lens barrel to encapsulate the red light irradiation component and the fundus imaging component, such encapsulation is only exemplary. According to the teachings of the present invention, those skilled in the art may also think of adding a housing outside the lens barrel to encapsulate, for example, Figure 7a to Figure 7d The red light irradiation device including the mobile platform shown in the figure is integrally packaged. Further, the red light irradiation device of the utility model can be connected to a base, and various control components including the control module and / or external interfaces can be arranged in the base or on the surface of the base for easy use. In addition, the base can also be designed to be detachable or pluggable, so as to be easier to use and maintain.

[0068] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model according to the specific circumstances.

[0069] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0070] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0071] Although this specification has shown and described a plurality of embodiments of the utility model, it is obvious to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will think of many changes, modifications and alternatives without departing from the idea and spirit of the utility model. It should be understood that in the process of practicing the utility model, various alternatives to the embodiments of the utility model described herein may be adopted. The attached claims are intended to define the scope of protection of the utility model, and therefore cover the modular composition, equivalent or alternatives within the scope of these claims.

Claims

1. A multifunctional red light irradiation device, characterized in that: include: A red light irradiation component, which is operated to irradiate the fundus with red light for myopia treatment; A fundus imaging component, which operates to image the fundus; a lens barrel, which is used to encapsulate at least one of the red light irradiation component and the fundus imaging component, Wherein, in the lens barrel, the red light irradiation component and the fundus imaging component share some optical components to realize irradiation of the fundus and / or imaging of the fundus.

2. The red light irradiation device according to claim 1, characterized in that: It also includes a positioning component, which is arranged on both sides relatively close to the eyeball inside or outside the lens barrel to position the eyeball.

3. The red light irradiation device according to claim 2, characterized in that: The positioning component includes two positioning cameras, which are arranged along the circumference outside or inside the lens barrel respectively, so as to realize the positioning of the eyeball by imaging the eye surface of the eyeball.

4. The red light irradiation device according to claim 3, characterized in that: The number of the lens barrels is one or two, and when the positioning cameras are arranged along the circumference inside the lens barrel, an illumination light source is also arranged in the red light irradiation device so as to illuminate the eyeball when the positioning camera images the eye surface of the eyeball.

5. The red light irradiation device according to claim 4, characterized in that: When the lens barrel is single, the red light irradiation device further comprises a lens barrel moving mechanism, which is connected to the control module and is used to drive the lens barrel to move from a position aligned with one eyeball to a position aligned with another eyeball.

6. The red light irradiation device according to claim 5, characterized in that: It also includes a plurality of moving platforms, wherein the plurality of moving platforms have respective directions and the red light irradiation component and the fundus imaging component are arranged on one of the moving platforms.

7. The red light irradiation device according to claim 6, characterized in that: The multiple mobile platforms include a first mobile platform, a second mobile platform and a third mobile platform, wherein the first, second and third mobile platforms are slidably connected and the red light irradiation component and the fundus imaging component are arranged on the first mobile platform, and the first, second and third mobile platforms are operated to move the red light irradiation component and the fundus imaging component according to the positioning of the eyeball.

8. The red light irradiation device according to claim 7, characterized in that: Also includes: A control module is connected to the red light irradiation component and the fundus imaging component respectively, so as to enable the red light irradiation device to operate to irradiate the fundus and / or to image the fundus.

9. The red light irradiation device according to claim 8, characterized in that: The red light irradiation component includes a red light source and the fundus imaging component includes an imaging light source, and the control module is used to control the turning on and off of the red light source and the imaging light source so that the red light irradiation device operates to irradiate and / or image the fundus.

10. The red light irradiation device according to claim 9, characterized in that: The red light source and the imaging light source are arranged at a certain interval along the axial direction of the lens barrel, and are turned on or off respectively via the control module.

11. The red light irradiation device according to claim 9, characterized in that: The red light source is fixedly arranged outside the lens barrel or inside the lens barrel at a position outside the lens barrel axis, and is turned on by the control module to emit red light.

12. The red light irradiation device according to claim 11, characterized in that: A reflecting prism is arranged in the lens barrel, and the red light is refracted by the reflecting prism arranged in the lens barrel so as to illuminate the eyeball.

13. The red light irradiation device according to claim 11, characterized in that: A pop-up reflector or a thin film beam splitter is arranged in the lens barrel, and the red light is reflected by the pop-up reflector or the thin film beam splitter so as to illuminate the eyeball.

14. The red light irradiation device according to claim 8, characterized in that: It also includes a light source moving mechanism connected to the control module, wherein when the fundus is irradiated, the light source moving mechanism moves the red light source from a position outside the lens barrel or outside the lens barrel axis inside the lens barrel to the lens barrel axis under the control of the control module, and when imaging the fundus, the light source moving mechanism moves the red light source from the lens barrel axis to outside the lens barrel or outside the lens barrel axis inside the lens barrel under the control of the control module.

15. The red light irradiation device according to claim 8, characterized in that: The fundus imaging assembly comprises a fundus sensor for acquiring fundus images, and a bandpass filter for filtering out red light is arranged between a red light source of a red light irradiation device and the fundus sensor.

16. The red light irradiation device according to claim 15, characterized in that: The red light irradiation component also includes an amplifying optical path, which is used to receive the red light emitted by the red light source and amplify it.

17. The red light irradiation device according to claim 8, characterized in that: The control module also includes a first control module, which is operated to control the red light irradiation component based on the current physiological condition of the fundus, wherein the current physiological condition of the fundus is obtained by analyzing the fundus imaging via the fundus imaging component.

18. The red light irradiation device according to claim 17, characterized in that: In analyzing the fundus imaging to obtain the current physiological condition of the fundus, the fundus imaging component operates to: Abnormal changes in the fundus imaging are judged to determine the current physiological condition related to the fundus.

19. The red light irradiation device according to claim 18, characterized in that: In controlling the red light irradiation component based on the current physiological condition of the fundus, the first control module is operated to: In response to abnormal changes in the current physiological condition of the fundus, the red light irradiation to the fundus is controlled to be turned on, continued, enhanced, weakened or stopped.

20. The red light irradiation device according to claim 8, characterized in that: The control module also includes a second control module, which is operated to control the red light irradiation component based on the current physiological condition of the ocular surface, wherein the current physiological condition of the ocular surface is obtained by analyzing the ocular surface image via the positioning component.

21. The red light irradiation device according to claim 20, characterized in that: In analyzing the ocular surface image to obtain the current physiological condition of the ocular surface, the positioning component operates to: Performing morphological and / or light reflection analysis on the pupil in the ocular surface image to determine a current physiological condition associated with the pupil; and / or Abnormal changes are judged on the ocular surface image to determine the current physiological condition related to the ocular surface.

22. The red light irradiation device according to claim 21, characterized in that: In controlling the red light irradiation component based on the current physiological condition of the ocular surface, the second control module is operated to: In response to the pupil being too large or too small or having abnormal light reflex, or in response to abnormal changes in the ocular surface, the red light irradiation to the fundus is controlled to be turned on, continued, enhanced, weakened or stopped.

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