CN110585602A

CN110585602A - Light-emitting device, equipment and system for transcranial light regulation and control

Info

Publication number: CN110585602A
Application number: CN201910954550.XA
Authority: CN
Inventors: 汪待发
Original assignee: Danyang Wisdom Medical Equipment Co Ltd
Current assignee: Danyang Wisdom Medical Equipment Co Ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2019-12-20
Anticipated expiration: 2039-10-09
Also published as: WO2021068278A1; CN110585602B

Abstract

The invention discloses a light-emitting device, equipment and a system for transcranial light regulation, wherein the device comprises: a light source unit; a light transmitting layer provided on an exit side of the light source section; and a light guide member having one end fixed to a side of the light transmissive layer opposite to the light source portion and configured to guide light transmitted from the light transmissive layer. This is disclosed through set up the leaded light spare on being used for the illuminator of transcranial light regulation and control, makes the leaded light spare pass between user's hair, with user's scalp direct contact, has reduced the influence that shelters from of hair to light transmission efficiency, makes on the light that sends via light source portion can be directly guided to user's scalp by the leaded light spare, promotes illuminator's irradiation effect.

Description

Light-emitting device, equipment and system for transcranial light regulation and control

Technical Field

The present disclosure relates to the field of transcranial light control, and in particular, to a light emitting device, a device, and a system for transcranial light control.

Background

Scientific research has found that low intensity light can be used in medical treatment, such as treatment of wounds, pain, and inflammation, and such light regulation is often performed by using low-power red or near-infrared laser (1 milliwatt to 500 milliwatt power level and 600 nm to 1100nm wavelength) to stimulate a human body part, thereby generating a corresponding biological response. In recent years, more and more researchers have been exploring the field of light-controlled improvement of brain function, and have conducted studies on neurological and psychological diseases through various transcranial light-controlled products. However, the existing transcranial light control product is often affected by the shielding of the hair of the user, so that the light transmission rate is reduced, most of light cannot irradiate the scalp of the user, and the use effect of the transcranial light control product is affected.

Disclosure of Invention

It is an object of embodiments of the present disclosure to provide a light emitting device, an apparatus and a system for transcranial light regulation to solve the above-mentioned problems in the prior art.

In order to solve the above technical problem, according to a first aspect of the present disclosure, there is provided a light emitting device for transcranial light modulation. The light emitting device includes: a light source unit; a light-transmitting layer provided on an exit side of the light source section; and a light guide member having one end fixed to a side of the light-transmissive layer opposite to the light source portion and configured to guide light transmitted from the light-transmissive layer.

According to a second aspect of the present disclosure, there is also provided an apparatus for transcranial light modulation. The apparatus comprises: a wearing device configured to be worn to the head; and the carrying device. The bearing device comprises: a base secured to the wearable device; and at least one branch arm, wherein one end of the branch arm is pivotally connected with the base through a first biasing member, so that the branch arm is folded inwards under the action of the first biasing member, and the branch arm is fixed with a light-emitting device according to various embodiments of the present disclosure.

According to a third aspect of the present disclosure, there is also provided a system for transcranial light modulation. The system comprises: a device for transcranial light modulation according to various embodiments of the present disclosure; at least one detection device secured to the carrier device and configured for acquiring physiological signals of the brain of a user; a terminal configured to: controlling the operation of the light-emitting device and/or the detection device, and receiving the physiological signal collected by the detection device.

The beneficial effects of this disclosed embodiment lie in: through set up the leaded light spare on the illuminator that is used for transcranial light to regulate and control, make the leaded light spare pass between user's hair, with user's scalp direct contact, reduced sheltering from of hair and to the influence of light transmission efficiency, make on the light that sends via light source portion can be directly guided to user's scalp by the leaded light spare, promote illuminator's irradiation effect.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments generally by way of example and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

Fig. 1(a) shows a schematic structural diagram of a light emitting device for transcranial light modulation according to an embodiment of the present disclosure;

fig. 1(b) shows a schematic structural diagram of a light emitting device for transcranial light modulation according to an embodiment of the present disclosure;

FIG. 2 shows a schematic structural diagram of a device for transcranial light modulation according to an embodiment of the present disclosure;

FIG. 3 shows a schematic structural diagram of a carrier according to an embodiment of the present disclosure;

fig. 4 illustrates a schematic view of a branch arm in a collapsed state without an external force applied thereto, in accordance with an embodiment of the present disclosure;

figure 5 illustrates a schematic view of a branch arm in an expanded state when subjected to an external force, according to an embodiment of the present disclosure;

FIG. 6 shows a schematic diagram of a system for transcranial light modulation according to an embodiment of the present disclosure;

fig. 7(a) shows a unit schematic of a terminal in a system for transcranial light modulation according to an embodiment of the present disclosure;

fig. 7(b) shows a block diagram of a configuration of a terminal in a system for transcranial light modulation according to an embodiment of the present disclosure.

Detailed Description

The above and other aspects, features and advantages of the present disclosure will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the disclosure that may be embodied in various forms. Well-known and/or repeated functions and structures have not been described in detail so as not to obscure the present disclosure with unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.

The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.

Embodiments of the present disclosure provide a light emitting device for transcranial light modulation for emitting low-power red or near-infrared light to a user's head, which may employ, for example, power levels of 1-500mw and wavelengths of 600-. The light-emitting device may be as shown in fig. 1, and mainly includes: the light source unit 10, the light-transmitting layer 20 provided on the emission side of the light source unit, and the light guide 30, specifically, one end (e.g., a lower end shown in fig. 1 (a)) of the light guide 30 is fixed on a side (e.g., an upper side shown in fig. 1 (a)) of the light-transmitting layer 20 opposite to the light source unit 10, and is configured to guide light transmitted from the light-transmitting layer 20. The light-transmitting layer 20 allows light emitted from the light source unit 10 to pass through smoothly, and isolates the light source unit 10 from the external environment, thereby reducing the influence of the external environment on the light source unit 10, and also reducing the heat transfer from the light source unit 10 to the head side, thereby preventing discomfort of the head due to the temperature rise of the light source unit 10 or interference with physiological signals (e.g., blood oxygen signals). The introduction of the light guide member 30 can improve the light transmission efficiency and correct the light transmission direction, further reduce the light dissipation rate and improve the utilization efficiency of the emitted light on transcranial light control. When worn on the head, the light-transmissive layer 20 may apply pressure to the light guide 30 so that the light guide 30 can abut against the head to improve the irradiation efficiency for the head.

It should be noted that fig. 1(a) is only a schematic diagram of a preferred structure of the light emitting device, and may be different according to the actual structure of each component in actual use, and the embodiment is not limited.

In some embodiments, the light guide 30 may be designed to be cylindrical, preferably cylindrical, so that space is better utilized. The light guide member 30 is preferably made of a transparent material such as glass or acryl to ensure light transmission efficiency. Specifically, the light guide 30 may have a fixed end 31 and a free end 32, where the fixed end 31 is one end of the light guide 30 fixed to the light-transmitting layer 20, and the free end 32 is the other end of the light guide 30 opposite to the fixed end 31. The light guide 30 may be directly in contact with the scalp of the user, and is configured to guide and emit light transmitted from the light-transmitting layer 20 to directly guide the light to the scalp of the user, reducing the influence of hair shielding on the light transmission efficiency.

In some embodiments, the light guide 30 disposed on the light-transmitting layer 20 may be plural, and disposed at both sides or around the center line of the light-transmitting layer 20 at intervals. Thus, the light guide members 30 are arranged in an array to have a comb-like effect, which is beneficial to increasing the contact points between the light emitting device and the scalp of the user, and combing the hair and collecting the hair in the space between the light guide members 30, thereby reducing the shielding effect of the hair on illumination. In some embodiments, the transparent layer 20 may be made of an elastic material, so that the angle of the light guide 30 changes when the light guide 30 is pressed by the scalp, thereby facilitating the light guide 30 to pass through the gap between the hairs and abut against the scalp, and further reducing the shielding effect of the hairs on the light.

In some embodiments, the plurality of light guides 30 may be configured to gradually increase the length of the light guides 30 as one moves away from the centerline of the light transmissive layer 20. That is, the surface formed by the free ends 32 of the light guide members 30 is a curved surface recessed toward the fixed end 31, and when the light guide members 30 are arranged in a multi-layer loop, the length from the outer loop to the inner loop is gradually reduced. As such, when the light guide 30 is acted upon by an external force on the side opposite to the light-transmissive layer 20 (head side), this gradually changing length arrangement further facilitates the light guide 30 to expand outward relative to the centerline of the light-transmissive layer 20, thereby further plucking the hair below the light-emitting device, further reducing the negative effects due to hair blockage. In addition, the concave curved surface of the head side of the light guide member 30 is arranged to be more suitable for the shape of the head of a user, so that the light guide member is more comfortable to wear and has better fitting degree with the scalp.

The light source 10 in this embodiment is mainly used for emitting low-frequency near-infrared light, and has a wavelength range of 600 nm to 1100nm, and in actual use, an LED bulb, a laser bulb, or another bulb capable of emitting near-infrared light may be used according to production requirements. The light source section 10 may be any of the above-described bulbs, or a plurality of bulbs may be placed on one circuit board to form a light source layer for use, and the light source section 10 shown in fig. 1(a) is a light source layer formed by a circuit board having a plurality of bulbs.

Fig. 1(b) illustrates a schematic structural view of a light emitting device for transcranial light modulation according to another embodiment of the present disclosure, and description of similar components in fig. 1(a) is omitted herein to avoid redundancy. As shown in fig. 1(b), the light emitting device may further include an elastic member 40 connected to a side (a lower side in fig. 1 (b)) of the light source section 10 opposite to the light-transmissive layer 20. The elastic member 40 may be implemented in various manners, including but not limited to a spring, an elastic material layer, etc., so that the portion composed of the light source 10, the light-transmitting layer 20, and the light guide 30 can be stretched under the pressure from the head, thereby further improving the adaptability of the light-emitting device to different head shapes of users.

In order to reduce the influence of the external environment on the light emitting device and protect the components of the light emitting device, the light emitting device may further include a housing 50, where the housing 50 is used to accommodate the light source 10, the light-transmitting layer 20 and the elastic member 40, so that the light source 10, the light-transmitting layer 20 and the elastic member 40 move inside the housing 50 based on the telescopic property of the elastic member 40 when the free end 32 of the light guide 30 is acted by an external force. Meanwhile, the housing 50 has a first opening through which the light guide 30 fixed to the light-transmissive layer 20 protrudes. In this way, the expansion and contraction direction by the elastic member 40 can be restricted, and the light source unit 10, the light-transmitting layer 20, and the light guide 30 can be reduced from wobbling.

In some embodiments, a heat dissipation layer 60 may be further connected to an end (a side away from the head, i.e., a lower side in fig. 1 (b)) of the elastic member 40 opposite to the light source 10, for dissipating heat from the light source 10, the heat dissipation layer 60 is fixed in the housing 50, so as to ensure that the temperature of the light emitting device during operation is not too high, and a specific heat dissipation manner of the heat dissipation layer 60 may be air-cooled or water-cooled, i.e., implemented by using a fan or a water-cooled heat sink. The heat dissipation layer 60 is disposed away from the head, so as to avoid various heat dissipation mechanisms causing discomfort to the head or even interference with physiological signals of the head (such as blood oxygen signals).

Fig. 2 shows a schematic structural diagram of a device for transcranial light modulation according to an embodiment of the present disclosure. As shown in fig. 2, the transcranial light control device comprises a wearing device 100 and a carrying device 200. The wearing device 100 is configured to be worn on the head by a user, and the wearing device 100 may be a helmet, a headband, an elastic headgear (shown in fig. 2), or the like.

As shown in fig. 2, a light emitting device 300 according to various embodiments of the present disclosure is fixed on the carrier device 200. Although the light emitting device 300 having a circular structure is shown in fig. 2, the shape and size of the light emitting device 300 may be selected by itself in actual use. The wearing device 100 in fig. 2 is an elastic headgear which can be adapted to various head shapes due to its elasticity, and includes a soft headgear main body having elasticity and a fixing band 101 attached to the headgear main body, the fixing band 101 being used to fix the elastic headgear to the chin or cheek of a user when the user wears the elastic headgear, and it may be a band or a band having a buckle. In some embodiments, the wearing device 100 may also be a helmet made of a hard opaque material to enhance the impact resistance of the wearing device 100, and since it is not easily deformed, it may prevent movement and the like caused by external interference during the use of the apparatus. Preferably, the elastic headgear is also made of an opaque material to prevent degradation of use due to exposure to light or injury to the eyes of the user due to exposure to light.

Fig. 3 shows a schematic structural diagram of a carrier 200 according to an embodiment of the present disclosure. In some embodiments, the carrier device 200 may generally include a base 201 and at least one branch arm 202. The base 201 is fixed to the wearing device 100 (as shown in fig. 2), for example, at the inner side of the wearing device 100, for example, at the head top portion; one end of each branch arm 202 is pivotably connected to the base 201 by a first biasing member (not shown in fig. 3), and the branch arms 202 can be folded inward by the first biasing member. In this manner, in the case where the branch arm 202 is expanded by the outer contour of the head, the first biasing member exerts an inward collapsing force against it, so that the branch arm 202 together with the light emitting device 300 arranged thereon can be made to more firmly and closely fit the head of the user, and detachment of the branch arm 202 from the head due to shaking of the head can be prevented. In some embodiments, the first biasing member 2011 may be a resilient joint or a torsion spring. As shown in fig. 3, the plurality of branch arms 202 may be in a claw-type arrangement in order to be more firmly clamped to the head and to enable the light emitting devices 200 scattered on the respective branch arms 202 to be directed to illuminate different areas of the head.

In some embodiments, the branch arm 202 may be made of a hard material with certain elasticity, and the shape thereof may be adapted to the shape of the head of the user, so that the light emitting device 300 fixed on the branch arm 202 may be irradiated to the subdivided head regions of the user, such as, but not limited to, the frontal lobe, the parietal lobe, the temporal lobe, the occipital lobe, etc., as required, to achieve the targeted light control effect corresponding to the brain function.

In some embodiments, branch arm 202 may employ a segmented arrangement. That is, branch arm 202 may have multiple joints articulated to each other to enable more flexible retraction. As shown in fig. 4 and 5, the branch arm 202 may include an upper branch arm 2021 and a lower branch arm 2022, one end of the upper branch arm 2021 is pivotally connected to the base 201 by a first biasing member 2011, and the lower branch arm 2022 is pivotally connected to the other end of the upper branch arm 2021 by a second biasing member 2023, so that the lower branch arm 2022 is folded inward by the second biasing member 2023, so as to ensure a closer fit when the user wears the device, and at the same time, the device may be adapted to different head styles of different users, thereby improving the adaptability of the device. Although a double joint arrangement is shown in fig. 4 and 5, the structure of branch arm 202 is not limited thereto as long as adjacent joints are pivotally connected and respective biasing members are provided to maintain the collapsed state without external force.

Fig. 4 shows the separating arm 202 in a closed position when not subjected to external forces, and fig. 5 shows the separating arm 202 in an open position when subjected to external forces while the user is wearing the device.

The transcranial light control equipment according to the embodiments of the disclosure is convenient for a user to wear, and the light-emitting device can be tightly attached to the head of the user through the biasing member arranged between the base of the bearing device and the branch arm (and between the adjacent joints of the branch arm), the adaptability of the equipment to different head shapes of the user is enhanced, the problem of shielding light by the hair of the user is further reduced by combining with the light guide arrangement of the light-emitting device, and the using effect of the equipment is enhanced.

Fig. 6 illustrates a system for transcranial light modulation, the system comprising: an apparatus 500 for transcranial light modulation according to various embodiments of the present disclosure, at least one detection device, and a terminal 600. Wherein the device 500 for transcranial light regulation is primarily for emitting near infrared light to a user; the detection device is fixed on a bearing device (not shown in fig. 6) of the equipment and is used for acquiring physiological signals of the brain of the user after being irradiated by near infrared light; the terminal 600 may be an independent device independent from the transcranial light control device 500, and is configured to receive the physiological signal collected by the detection apparatus and perform data analysis, so that the user can learn the usage condition of the terminal, and the terminal 600 may further perform automatic control of the light emitting apparatus and the detection apparatus by sending corresponding control signals according to the result of the data analysis.

The detection means may be carried by the limb arms of the carrying means similar to the light emitting means, and a user may select several of the limb arms to carry the detection means as desired. In some embodiments, the detection device may employ various physiological sensors, probes, electrodes, and the like. The detection means may be selected according to specific requirements and application scenarios, for example, EEG may be selected to measure brain electrical activity when brain rhythm needs to be measured, and fNIRS may be selected to measure blood oxygen signal when activity of brain regions needs to be measured. Accordingly, the detection device may be a signal acquisition device such as an electroencephalograph (EEG) or near-infrared brain-function imaging (fNIRS), including but not limited to electrodes, probes, and the like. In the detection device, the position of the detection probe can be set or changed according to the needs of a user, and the detection points can be selected from points specified by the international 10-20 electroencephalogram system and can also be selected according to points which are interested by the user. The EEG signals or the blood oxygen signals collected by the detection device can be transmitted to the terminal, and the terminal analyzes the EEG signals or the blood oxygen signals.

Fig. 7(a) shows a schematic unit diagram of a terminal 600 in a system for transcranial light modulation according to an embodiment of the present disclosure. As shown in fig. 7(a), the terminal 600 may include a light emission control unit 601, a detection control unit 602, and a data analysis unit 603. The light-emitting control unit 601 may be configured to control the on-timing and the light-emitting intensity of each light-emitting device, for example, correspondingly control the on-state of the light-emitting devices at different positions according to the actual requirement of the user, and adjust the on-time and the on-frequency of the light source portion of each light-emitting device; the detection control unit 602 is configured to control the turn-on timing and/or turn-on frequency of each detection device, and specifically, the detection control unit 602 may set the turn-on time and turn-on frequency of the detection device correspondingly or select which acquisition device is specifically used for detection according to the condition that the light-emitting control unit 601 controls the turn-on of the light-emitting device; the data analysis unit 603 is configured to perform data analysis based on the received physiological signals acquired by the detection device and may specifically feed the results of the data analysis to at least one of the lighting control unit 601 and the detection control unit 602, and correspondingly, at least one of the lighting control unit 601 and the detection control unit 602 may adjust the control signal for the respective device based on the results of the data analysis.

In some embodiments, a training target may be set before the user performs training each time, that is, the training effect that the user desires to obtain, during the training process, if the result of the analysis of the physiological signal of the user after the data analysis by the data analysis unit 603 already satisfies the training target, the lighting control unit 601 or the detection control unit 602 may adjust the control signal for turning off the control signal of the corresponding device according to the result, and turn off the lighting device or the detection device correspondingly, thereby proving that the training is completed. The light-emitting control unit 601 or the detection control unit 602 may further perform other adjustments according to the result of the data analysis, for example, compare the result of the data analysis with a training target, and adjust parameters such as the on-time and the on-intensity of the light-emitting device or the detection device according to the comparison result, thereby achieving a better training effect.

Fig. 7(b) shows a block configuration diagram of the terminal 600 in the system for transcranial light modulation according to the embodiment of the present disclosure. As shown in fig. 7(b), the terminal 600 may include: a communication interface 606 configured to acquire physiological signals of the brain of the user acquired by the detection device; and a processor 604 configured to control the respective light emitting means and detecting means and perform data analysis based on physiological signals of the brain of the user.

The processor 604 executes functions or methods realized by at least codes or instructions included in programs stored in the memory 607, such as the light emission control unit 601, the detection control unit 602, and the data analysis unit 603 shown in fig. 7(a), thereby realizing functions of controlling the respective light emitting devices and the detection devices, and/or data analysis of physiological signals, and the like.

Examples of processor 604 include a Central Processing Unit (CPU), Micro Processing Unit (MPU), GPU, microprocessor, processor core, multiprocessor, Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA), and the like.

The memory 606 temporarily stores programs loaded from the storage 607 and provides a work area to the processor 604. Various data generated when the processor 604 executes the programs, such as but not limited to results of data analysis of physiological signals, etc., may also be temporarily stored in the memory 606. The memory 606 includes, for example, Random Access Memory (RAM) and Read Only Memory (ROM).

The memory 607 stores programs executed by the processor 604, for example. The storage 607 includes, for example, a Hard Disk Drive (HDD), a Solid State Drive (SSD), and a flash memory.

The input/output interface 605 may include an input device that inputs various operations of the terminal 600 and an output device that outputs various processing results.

The communication interface 606 performs transmission and reception of various data via a network. The communication may be performed by cable or wirelessly, and any communication protocol may be used as long as it can communicate with each other.

The various components in terminal 600 may communicate information with each other via bus 608. The storage medium may store the program in a "non-transitory tangible medium". Further, the program includes, for example, a software program or a computer program.

Further, at least some processing in the terminal 600 may be implemented by cloud computing configured by one or more computers. In some embodiments, at least some processing in terminal 600 may be performed by another apparatus. In this case, at least some of the processing of each functional unit implemented by the processor 604 may be performed by alternative means.

Various operations or functions are described herein that may be implemented as or defined as software code or instructions. Such content may be source code or differential code ("delta" or "patch" code) that may be executed directly ("object" or "executable" form). The software code or instructions may be stored in a computer-readable storage medium and, when executed, may cause a machine to perform the functions or operations described, and includes any mechanism for storing information in a form accessible by a machine (e.g., a computing device, an electronic system, etc.), such as recordable or non-recordable media (e.g., Read Only Memory (ROM), Random Access Memory (RAM), magnetic disk storage media, optical storage media, flash memory devices, etc.).

The exemplary methods described herein may be machine or computer-implemented, at least in part. Some examples may include a non-transitory computer-readable medium or machine-readable medium encoded with instructions operable to configure an electronic device to perform a method as described in the above examples. An implementation of such a method may include software code, such as microcode, assembly language code, higher level language code, or the like. Various programs or program modules may be created using various software programming techniques. For example, program segments or program modules may be designed using Java, Python, C + +, assembly language, or any known programming language. One or more of such software portions or modules may be integrated into a computer system and/or computer-readable medium. Such software code may include computer readable instructions for performing various methods. The software code may form part of a computer program product or a computer program module. Further, in one example, the software code can be tangibly stored on one or more volatile, non-transitory, or non-volatile tangible computer-readable media, such as during execution or at other times. Examples of such tangible computer-readable media may include, but are not limited to, hard disks, removable magnetic disks, removable optical disks (e.g., compact disks and digital video disks), magnetic cassettes, memory cards or sticks, Random Access Memories (RAMs), Read Only Memories (ROMs), and the like.

Moreover, although illustrative embodiments have been described herein, the scope includes any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., of aspects across various embodiments), adaptations or alterations based on the present disclosure. The elements in the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the specification or during the life of the application. Further, the steps of the disclosed methods may be modified in any manner, including by reordering steps or inserting or deleting steps. It is intended, therefore, that the description be regarded as examples only, with a true scope being indicated by the following claims and their full scope of equivalents.

Claims

1. A light emitting device for transcranial light modulation, comprising:

a light source unit;

a light-transmitting layer provided on an exit side of the light source section; and

a light guide having one end fixed to a side of the light-transmissive layer opposite to the light source part and configured to guide light transmitted from the light-transmissive layer.

2. The light-emitting device according to claim 1, wherein the light guide is columnar and has a fixed end fixed to the light-transmissive layer and a free end configured to emit light.

3. The light-emitting device according to claim 1, wherein the light guide member is plural and arranged on both sides or around a center line of the light-transmitting layer at intervals.

4. The light-emitting device according to claim 3, wherein the plurality of light guides are configured such that the length of the light guide gradually increases as it goes away from the center line of the light-transmissive layer.

5. The light-emitting device according to claim 4, wherein the light guide is configured to: when subjected to an external force on the side opposite to the light-transmitting layer, spreads outward with respect to the center line of the light-transmitting layer.

6. The light-emitting device according to claim 1, wherein the light-transmitting layer is made of a transparent material having elasticity.

7. The light-emitting device according to claim 1, further comprising an elastic member connected to a side of the light source portion opposite to the light-transmissive layer.

8. The light-emitting device according to claim 7, wherein the light-emitting device has a housing to movably accommodate the light source portion, the light-transmissive layer, and the elastic member, the housing having a first opening for protruding the light guide.

9. The light-emitting device according to claim 3, further comprising:

a heat dissipation layer connected with an end of the elastic member opposite to the light source part and fixed to the case.

10. The light-emitting device according to claim 1, wherein the light source of the light source section emits near-infrared light in a wavelength range of 600 nm to 1100 nm.

11. An apparatus for transcranial light modulation, the apparatus comprising:

a wearing device configured to be worn to the head; and

a load bearing device, comprising: a base secured to the wearable device; and at least one branch arm, wherein one end of the branch arm is pivotally connected with the base by a first biasing member so that the branch arm is inwardly collapsed by the first biasing member, and the light emitting device according to any one of claims 1 to 10 is fixed to the branch arm.

12. The apparatus according to claim 11 wherein the branch arms comprise at least an upper branch arm and a lower branch arm, the upper branch arm being pivotally connected at one end to the base by the first biasing member, the lower branch arm being pivotally connected to the upper branch arm by a second biasing member so as to converge inwardly under the action of the second biasing member.

13. The apparatus of claim 11, wherein the wearing device is a helmet and the bottom of the carrying device is fixed inside the helmet.

14. The apparatus of claim 13, wherein the helmet is made of a hard, opaque material.

15. The apparatus of claim 11, wherein the wearing device is an elastic headgear comprising a headgear body and a securing strap.

16. A system for transcranial light modulation, the system comprising:

the device for transcranial light modulation according to any one of claims 11-15;

at least one detection device secured to the carrier device and configured for acquiring physiological signals of the brain of a user;

a terminal configured to: controlling the operation of the light-emitting device and/or the detection device, and receiving the physiological signal collected by the detection device.

17. The system of claim 16, wherein the terminal comprises:

a light emission control unit configured to control a turn-on timing and a light emission intensity of each light emitting device;

a detection control unit configured to control a turn-on timing and/or a turn-on frequency of each detection device;

a data analysis unit configured to perform data analysis based on the received physiological signal acquired by the detection device.

18. The system according to claim 16, wherein the data analysis unit is configured to feed results of data analysis to at least one of the lighting control unit and the detection control unit,

the at least one of the light emission control unit and the detection control unit is configured to: adjusting a control signal for the respective device based on a result of the data analysis.

19. The system of claim 18, wherein the at least one of the lighting control unit and the detection control unit is configured to:

detecting whether the result of the data analysis meets a training target;

in case the result of the data analysis meets a training goal, the control signal for the respective device is adjusted to a closed control signal.