Optical treatment system and optical therapeutic instrument thereof

Abstract

The utility model discloses an optical treatment system and an optical therapeutic apparatus thereof. The optical treatment system comprises a plurality of light sources, wherein each light source can emit a specific light beam; the lens group can receive and emit a specific light beam of at least one light source; and the light source switching module can switch the positions of the plurality of light sources, so that a specific light beam emitted by at least one light source can be received by the lens group. According to the optical treatment system, switching among different light sources can be realized, so that the selectivity of optical treatment is enhanced.

Description

Technical Field

[0001] The present disclosure generally relates to the field of therapeutic technology. More specifically, the present disclosure relates to an optical therapeutic system and an optical therapeutic device thereof. Background Art

[0002] One of the main causes of myopia is the growth of axial length. Therefore, how to inhibit or slow down the growth of axial length is one of the key points of myopia treatment and prevention. Currently, the methods on the market to deal with eyeball growth include wearing orthokeratology lenses and irradiating with light feeding devices.

[0003] Studies have shown that using long-wave red light with a wavelength of 650nm to directly irradiate the retina can effectively inhibit the growth of the axial length of the eye. The principle is that the light in this band has strong penetrability, so after the red light penetrates the retina, it acts on the choroid at the same time. Since the 650nm red light has a warming effect, it will cause the bottleneck-like narrowing at the opening of the arteriole of the choroidal lobule to open, increase the blood flow into the lobule, thereby increasing the microcirculatory blood volume, thickening the choroid thickness, and preventing the sclera from lacking oxygen. Therefore, the thinned choroid can be restored to normal thickness, providing sufficient oxygen for the sclera, improving the blood circulation of the fundus, and thus avoiding further deepening of myopia. In addition, the 650nm red light can make the retinal epithelial pigment cells secrete dopamine, thereby effectively inhibiting the excessive growth of the axial length. At present, there are already many devices for phototherapy on the market. Such devices usually use a binocular structure, so that each monocular corresponds to one eye, wherein each monocular structure can transmit, for example, a red light image formed by red light, and through mechanical adjustment, the red light images formed by the two monoculars appear to overlap in the eyes of a person.

[0004] However, current devices generally use a single-spectrum light source, which is non-selective and non-specific, so that the fovea or macular area of ​​the fundus can only receive stimulation from a single-wavelength spectrum, which greatly limits the effect of preventing axial length growth in myopia prevention and control.

[0005] In view of this, there is an urgent need to provide a phototherapy system solution to improve the selectivity of phototherapy. Summary of the invention

[0006] In order to at least solve one or more of the technical problems mentioned above, the present disclosure proposes a phototherapy system solution in multiple aspects.

[0007] In a first aspect, the present disclosure provides an optical therapy system, comprising: a plurality of light sources, each light source being used to emit a specific light beam; a lens group, the lens group being used to receive and emit a specific light beam from at least one light source; and a light source switching module, the light source switching module being used to switch positions of the plurality of light sources so that the specific light beam emitted by at least one light source is received by the lens group.

[0008] In some embodiments, a scattering element is further included. The scattering element is disposed between the light source and the lens group along the light path. The scattering element is used to adjust a specific light beam emitted by at least one light source to be emitted in a scattered state.

[0009] In some embodiments, the light source switching module includes a rotating device, and the plurality of light sources are switched by rotating the rotating device.

[0010] In some embodiments, the rotating device includes a turntable, and the plurality of light sources are respectively disposed on the turntable.

[0011] In some embodiments, the rotation axis of the turntable is arranged parallel to the light emitting direction of the lens group.

[0012] In some embodiments, a driving unit is further included, and the driving unit is used to drive the turntable to rotate. The driving unit and the lens group are arranged on the same side of the two axial sides of the turntable.

[0013] In some embodiments, the light source switching module includes a linear motion device, and the plurality of light sources are switched by linear motion of the linear motion device.

[0014] In some embodiments, the lens group includes a first lens and a second lens that are sequentially spaced apart along the optical path.

[0015] In some embodiments, the scattering element is arranged on the front focal plane of the first lens, the exit pupil plane of the first lens is arranged close to the rear surface of the first lens, and the exit pupil plane of the first lens is arranged at the front focal plane of the second lens, and the pupil placement position of the patient is arranged at the rear focal plane of the second lens.

[0016] In some embodiments, a reflective device is also included. The reflective device is arranged behind the light source along the optical path, and the reflective device is used to change the transmission direction of a specific light beam.

[0017] In some embodiments, the reflective device is disposed between the light source and the lens group along the optical path and is used to reflect a specific light beam to the lens group.

[0018] In some embodiments, the lens group also includes a first lens and a second lens arranged in sequence along the incident order of the specific light beam. The reflective device is arranged in the light emitting direction of the first lens and is used to reflect the specific light beam passing through the first lens to the second lens.

[0019] In a second aspect, the present disclosure provides a phototherapy apparatus, which includes the phototherapy system in the first aspect and multiple embodiments.

[0020] Through the optical therapy system and optical therapy device provided above, the disclosed embodiments can switch between multiple different light sources by using multiple light sources and a light source switching module, thereby improving the selectivity of phototherapy. Furthermore, in some embodiments, by providing a rotating device, multiple light sources can be rotated and switched, thereby saving space occupied by the equipment. Furthermore, in some embodiments, by adding a reflective device, the position of each component in the optical path can be flexibly changed, making the equipment layout more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By reading the detailed description below with reference to the accompanying drawings, the above and other objects, 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:

[0022] Figure 1 A schematic diagram showing the working principle of an existing optical therapy system is shown;

[0023] Figure 2a A schematic diagram showing the red light visual effect of an existing optical therapy system is shown;

[0024] Figure 2b Schematic diagram showing the light energy distribution of the existing optical therapy system

[0025] Figure 3 A schematic diagram of the layout of an existing improved treatment system is shown;

[0026] Figure 4 A schematic diagram showing the layout of a phototherapy system according to some embodiments of the present disclosure;

[0027] Figure 5 A schematic diagram showing the layout of a phototherapy system according to some other embodiments of the present disclosure;

[0028] Figure 6 A schematic diagram showing the layout of a phototherapy system according to some other embodiments of the present disclosure;

[0029] Figure 7 A schematic diagram showing the layout of a phototherapy system according to some other embodiments of the present disclosure;

[0030] Figure 8 A schematic diagram showing the layout of a phototherapy system according to some other embodiments of the present disclosure;

[0031] Fig. 9 A schematic diagram showing the layout of a phototherapy system according to some other embodiments of the present disclosure. DETAILED DESCRIPTION

[0032] 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, not 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.

[0033] It should be understood that the terms "include" and "comprising" used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0034] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this disclosure and claims, the singular forms of "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this disclosure and claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations.

[0035] As used in this specification and claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0036] The specific implementation of the present disclosure is described in detail below with reference to the accompanying drawings.

[0037] Figure 1A schematic diagram of the working principle of an existing optical treatment system is shown, in which part of the light beam emitted by the light source 300 enters the light-transmitting element 400, and is refracted by the light-transmitting element 400 to change its direction, and finally enters the fundus through the refraction of the cornea and related structures of the human eye 500. Among them, due to the strong penetrability of red light, most existing devices only use a single red light source, and the light source device also has the phenomenon of wavelength shift, so that the fovea or macular area of ​​the fundus can only receive the stimulation of a single wavelength spectrum, which greatly limits the effect of preventing the eye axis from growing in myopia prevention and control. There are also products on the market that use corresponding spectral filters in the optical path to achieve the effect of narrowing the spectral half-width, but the use of different filters and light sources increases additional expenses due to the cost of setting up different devices, and the limitations of single-wavelength treatment cannot be avoided in optical treatment.

[0038] Figure 2a A schematic diagram showing the red light visual effect of an existing optical therapy system is shown. Figure 2b FIG. 1 is a schematic diagram of the light energy distribution of an existing optical therapy system. It can be seen that the device according to the prior art can usually only emit a single red light, and the image of the red light in the human eye forms an uneven red light image with gradually increasing brightness from the edge of the macula 600 to the center 700. Figure 2b The energy cross-section distribution of the red light image in the fundus area is extremely uneven, and there may even be a peak point with extremely high energy in the center of the fundus. When using the device for treatment, the patient's eyes will adjust the fovea to face the light source itself to observe the light source image. At this time, the patient will see a small circular spot with high central brightness, and its high brightness will bring strong visual stimulation to the human eye. This uneven energy distribution is caused by the selection of light sources and light-transmitting elements of existing equipment and the influence of the human eye on the focusing of the light beam.

[0039] Figure 3 A schematic diagram of the layout of an existing improved treatment system is shown, which has added a light homogenizer 810 for removing the collimation of the light source 801 on the basis of the existing equipment, and cooperates with the Kohler illumination system composed of multiple lenses 802, 803 and the human cornea system 805, so that the light source 801 can form a uniformly distributed image at the bottom of the human eye. However, it still has the limitation of using a single wavelength light source for treatment.

[0040] In view of this, the disclosed embodiment provides an optical therapy system solution, which, by using multiple light sources and a light source switching module capable of switching multiple light sources, can flexibly switch between multiple light sources that can emit their own specific light beams, thereby overcoming the limitations of single-wavelength therapy and making the optical therapy solution more selective.

[0041] Figure 4 The schematic diagram of the layout of the optical therapy system of some embodiments of the present disclosure is shown. The optical therapy system of this embodiment includes a light source switching module, a plurality of light sources 20 arranged on the light source switching module, and a lens group aligned with the light output position of at least one of the light sources 20.

[0042] In this embodiment, the light source switching module includes a turntable 10 capable of rotating around a central axis 101, an axial end face of the turntable is set as a light source mounting surface 110, a plurality of light sources 20 are installed on the light source mounting surface 110, and are arranged at intervals from each other along the circumferential direction of the light source mounting surface 110, and the light emitting directions of the plurality of light sources 20 are the same as those of the light source mounting surface 110.

[0043] Thus, when it is necessary to switch the treatment light beam, the multiple light sources 20 can be driven to rotate by rotating the turntable 10, so that at least one light source 20 is aligned with the lens group. Those skilled in the art can understand that in this embodiment, the turntable 10 is formed into a circular disk, but the turntable can be formed into any other geometric shape, and the disclosed embodiment has no limitation in this regard, as long as it can rotate around a central axis and can well fix the multiple light sources.

[0044] Preferably, the optical therapy system according to this embodiment further includes a light homogenizer 210, which is disposed between at least one light source 20 and the lens group along the optical path. The light homogenizer 210 may be frosted glass or other materials that can scatter light, so that after the specific light beam is irradiated on the light homogenizer 210, the scattering effect of the light homogenizer 210 removes the collimation of the light source light, so that the specific light beam continues to propagate along the optical path after scattering. At this time, the specific light beam can be equivalent to a divergent surface light source after passing through the light homogenizer 210. The size of the surface light source is the size of the light spot formed by the specific light beam emitted by the light source irradiating on the light homogenizer 210, and its divergence angle is equal to the scattering angle of the light homogenizer 210 to the light.

[0045] The lens group includes an incident end for receiving a light beam and an output end for transmitting a light beam. The incident end of the lens group is arranged toward the light source mounting surface 110 to receive a specific light beam emitted by at least one of the multiple light sources 20, and transmit the specific light beam from the output end to a specific treatment position 220, which is used to place the pupil of the eye of the person being treated.

[0046] In this embodiment, the lens group includes a first lens 201 close to the light source along the optical path, and a second lens 202 close to the treatment position 220 along the optical path. Both the first lens 201 and the second lens 202 are convex lenses, wherein the first lens 201 is used to collect and converge a specific light beam transmitted by the light source 20, that is, the first lens 201 can also be called a condenser; the second lens 202 is used to refract the specific light beam refracted by the first lens 201 and project it to the human eye 204, so the second lens 202 can also be called a projection lens. Preferably, the front focal plane of the first lens 201 coincides with the position of the light homogenizing plate 210, so that the surface light source scattered by the light homogenizing plate 210 is evenly irradiated on the exit pupil surface 203 of the first lens 201 after passing through the first lens 201; the exit pupil surface 203 of the first lens 201 is located at a position close to the rear surface of the first lens 201, so that the energy distribution of the light spot on the exit pupil surface 203 is more uniform; the exit pupil surface 203 of the first lens 201 also coincides with the front focal plane of the second lens 202, and the treatment position 220 coincides with the rear focal plane of the second lens 202, so that the second lens 202 and the human eye form a projection lens group, and the light emitted from each position on the exit pupil surface 203 can pass through the pupil and illuminate the fundus, so that the human eye 204 can see a uniform surface light source. Through such a setting, an optical path structure similar to Kohler illumination is formed, so that the treatment light is evenly distributed, the stimulation to the human eye is reduced, and the risk of damage to the human eye caused by the convergence of high-energy light is reduced.

[0047] Figure 5 Schematic diagrams of the layout of optical treatment systems of other embodiments of the present disclosure are shown. Among them, the arrangement of the lens group, the light homogenizing plate 210, and the treatment position 220 in this embodiment is the same as that in the previous embodiment, and will not be repeated here. The difference is that the turntable 10' in this embodiment also includes a transmission shaft 102 extending axially from the center of the light source mounting surface 110, and the transmission shaft 102 is connected to a transmission structure 120, and is driven to rotate by the transmission mechanism 120, thereby driving the turntable 10' to rotate for light source switching. The transmission mechanism 120 can be an electric drive device such as a stepping motor, which is not limited here. Since the transmission shaft 102 starts from the light source mounting surface 110' and extends along the axial direction of the turntable 10', and the light emitting direction of the light source 20 is the same as the direction of the light source mounting surface 110', the transmission shaft 102 is roughly parallel to the arrangement direction of the lens group along the light path. This arrangement enables the transmission mechanism 120 to be arranged horizontally side by side with the lens group in space, the equipment structure is more compact, and the space utilization rate is significantly improved.

[0048] Figure 6The schematic diagram of the layout of the optical therapy system of other embodiments of the present disclosure is shown. Among them, the arrangement of the lens group, the light homogenizing plate 210, the treatment position 220 and other parts of this embodiment is the same as that of the previous embodiment, except that the light source switching module in this optical therapy system is a linear moving device 15 that can linearly move and switch multiple light sources, and multiple light sources 20 are arranged on the linear moving device 15 at intervals along the moving direction of the linear moving device 15. The linear moving device 15 can switch multiple light sources 20 by reciprocating along its moving direction, and align at least one light source 20 with the lens group. The linear moving device 15 can realize its function through a simpler mechanical structure and can improve the utilization rate of the actual space.

[0049] Those skilled in the art will appreciate that the above embodiments are merely exemplary of several structures of the light source switching module, and the disclosed embodiments are not limited in this respect. Under the premise of satisfying the switching between multiple different light sources, the light source switching module can be set to other structures, including but not limited to arranging multiple light sources at intervals on the outer circumference of the turntable, arranging a deformable light source switching module such as a chain link, and spherical or hemispherical light source switching modules.

[0050] In the above embodiments, the optical devices of the optical path are arranged along a straight line, and adjusting the direction of the optical path by various reflective devices can make the actual setting of the optical system flexible, thereby improving space utilization and reducing costs. The following illustrates several exemplary solutions for changing the arrangement of the optical path by adding reflective devices in conjunction with the accompanying drawings.

[0051] Figure 7 Schematic diagrams of the layout of optical therapy systems of other embodiments of the present disclosure are shown. The light source switching module is omitted, and the optical therapy system according to this embodiment also includes a reflector 220. In the optical therapy system of this embodiment, the orientation of the light source 20 is set to be approximately perpendicular to the arrangement direction of the lens group, and the reflector 220 is set at the light outlet of the light source 20, and is arranged to be at an angle of 45° with the irradiation direction of the light source 20, so as to change the propagation direction of the specific light beam emitted by the light source 20 to the same as the arrangement direction of the lens group after reflecting it, so that the specific light beam is projected onto the light homogenizing plate 210 and received by the lens group.

[0052] Figure 8 Schematic diagrams showing the layout of optical therapy systems according to other embodiments of the present disclosure. Figure 8In the embodiment shown, the reflector in the previous embodiment can be replaced by a right-angle prism 240, wherein the two right-angle side surfaces of the right-angle prism 240 are respectively facing the irradiation direction of the light source 20 and the direction of the receiving end of the lens group, so that the right-angle prism 240 can reflect the specific light beam emitted by the light source 20 through the principle of total internal reflection and change its propagation direction to be the same as the arrangement direction of the lens group, so that the specific light beam is projected onto the light homogenizing plate 210 and is received by the lens group.

[0053] Fig. 9 Schematic diagrams of the layout of optical treatment systems of other embodiments of the present disclosure are shown. In this embodiment, a reflector 230 is provided between the exit pupil plane 203 of the first lens 201 and the second lens 202 along the optical path. The main optical axis of the first lens 201 is set to be substantially perpendicular to the main optical axis of the second lens 202. The reflector 230 is provided at the position where the first lens 201 emits light along the optical path, and is arranged to form an angle of 45° with the main optical axis of the first lens 201, so as to reflect the specific light beam transmitted from the first lens 201 and change its propagation direction to the same direction as the extension direction of the main optical axis of the second lens 202, so that the specific light beam is projected to the second lens 202 and finally transmitted to the human eye 204.

[0054] Those skilled in the art will appreciate that the manner of adding a reflective device to the optical path is not limited to the embodiments described above, and may include, for example, adding two or more reflectors to form a reflector group, or providing reflectors between the light source and the light homogenizing plate and between the first lens 201 and the second lens 202, etc. In addition, the setting angle of the reflector is not limited to 45° to the incident direction of the light, and may be adjusted to other angles according to specific circumstances, as long as the adjusted specific light beam can enter the human eye at a predetermined angle.

[0055] Each of the multiple light sources can emit a specific light beam, for example, including a red light source, a green light source, a blue light source, etc. The red light source can emit a single wavelength red light with a wavelength of 650nm, the green light source can emit a single wavelength green light with a wavelength of 550nm, and the blue light source can emit a single wavelength blue light with a wavelength of 440nm. It is also possible to set a composite color light source that can emit light of multiple bands at the same time, a light source that forms a specific shape or pattern, and a light source that emits light that changes in wavelength and brightness in a certain regular pattern. In addition, the position of the light source can be set so that, for example, the light emitted by multiple adjacent light sources can be received by the lens group at the same time, so as to further enrich the options for optical therapy. Under the premise of meeting the brightness requirements of the treatment, there is no restriction on the form of the light source, and the generator of the light source can be a laser or an LED light emitter, etc.

[0056] In addition, the present disclosure also discloses an optical therapy device including the optical therapy system described above, and the optical therapy device can be configured as a single-tube or double-tube form, wherein each single-tube can receive specific light emitted by the optical therapy system.

[0057] Although multiple embodiments of the present disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art may think of many changes, modifications, and alternatives without departing from the thought and spirit of the present disclosure. It should be understood that in the process of practicing the present disclosure, various alternatives to the embodiments of the present disclosure described herein may be adopted. The attached claims are intended to define the scope of protection of the present disclosure, and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A phototherapy system, characterized in that: include: A plurality of light sources, each of which is used to emit a specific light beam; A lens group, the lens group is used to receive and emit the specific light beam of at least one of the light sources; as well as A light source switching module is used to switch the positions of the multiple light sources so that the specific light beam emitted by at least one of the light sources is received by the lens group.

2. The optical therapy system according to claim 1, characterized in that It also includes a scattering element, which is arranged between the light source and the lens group along the light path, and is used to adjust a specific light beam emitted by at least one of the light sources to be emitted in a scattered state.

3. The optical therapy system according to claim 1 or 2, characterized in that: The light source switching module comprises a rotating device, and the plurality of light sources are rotated and switched by the rotating device.

4. The optical therapy system according to claim 3, characterized in that The rotating device comprises a rotating disk, and the plurality of light sources are respectively arranged on the rotating disk.

5. The optical therapy system according to claim 4, characterized in that The rotation axis of the turntable is arranged parallel to the light emitting direction of the lens group.

6. The optical therapy system according to claim 5, characterized in that It also includes a driving unit, which is used to drive the turntable to rotate, and the driving unit and the lens group are arranged on the same side of the two axial sides of the turntable.

7. The optical therapy system according to claim 1 or 2, characterized in that: The light source switching module includes a linear motion device, and the plurality of light sources are switched by linear motion of the linear motion device.

8. The optical therapy system according to claim 1 or 2, characterized in that: The lens group includes a first lens and a second lens which are sequentially arranged at intervals along the optical path.

9. The optical therapy system according to claim 8, characterized in that It also includes a scattering element, which is arranged on the front focal plane of the first lens, the exit pupil plane of the first lens is arranged close to the rear surface of the first lens, and the exit pupil plane of the first lens is arranged at the front focal plane of the second lens, and the pupil placement position of the patient is arranged at the rear focal plane of the second lens.

10. The optical therapy system according to claim 1 or 2, characterized in that: It also includes a reflective device, which is arranged behind the light source along the light path and is used to change the transmission direction of the specific light beam.

11. The optical therapy system according to claim 10, characterized in that The reflective device is arranged between the light source and the lens group along the optical path and is used to reflect the specific light beam to the lens group.

12. The optical therapy system according to claim 10, characterized in that The lens group also includes a first lens and a second lens which are arranged in sequence along the incident order of the specific light beam. The reflective device is arranged in the light emitting direction of the first lens and is used to reflect the specific light beam passing through the first lens to the second lens.

13. An optical therapeutic device, characterized in that: A phototherapy system comprising any one of the preceding claims 1-12.

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