Head-mounted device, method of defogging thereof, and computer-readable storage medium

Abstract

The application discloses a head-mounted device, a defogging method thereof and a computer readable storage medium. The head-mounted device comprises a shell, a lens mounted on the shell and an adjusting member movably arranged on the shell. The shell is provided with an air inlet, an air outlet and an air passage connecting the air inlet and the air outlet. The air inlet and the air outlet are both communicated with the outside of the shell. The air inlet is located on the front side of the lens, and the air outlet is located on the rear side of the lens. Alternatively, the air outlet is arranged relative to the lens in the front-rear direction. The adjusting member is movably arranged on the shell to have a first state of conducting the air passage and a second state of cutting off the air passage. The technical scheme of the application provides a head-mounted device capable of defogging the lens.

Description

Technical Field

[0001] This invention relates to the field of head-mounted devices, and particularly to a head-mounted device and its defogging method, as well as a computer-readable storage medium. Background Technology

[0002] As AR glasses become more widely used, their functions are increasing, and their application scenarios are expanding, such as outdoor driving and outdoor sports. When users wear AR glasses in winter, condensation can easily form on the lenses when moving from outdoors to indoors or inside a car, interfering with their vision. Prolonged wiping of the lenses with a lens cloth or paper can scratch the waveguide, negatively impacting the AR glasses experience. Summary of the Invention

[0003] The main objective of this invention is to provide a head-mounted device that can defog lenses.

[0004] To achieve the above objectives, the present invention provides a head-mounted device comprising:

[0005] A housing, a lens mounted on the housing, the housing having an air inlet, an air outlet, and an air passage connecting the air inlet and the air outlet, both the air inlet and the air outlet being connected to the outside of the housing, the air inlet being located on the front side of the lens; the air outlet being located on the rear side of the lens, and / or, the air outlet being positioned relative to the lens in the front-rear direction; and

[0006] An adjusting element is movably disposed in the housing to have a first state that opens the air passage and a second state that closes the air passage.

[0007] Optionally, the head-mounted device further includes:

[0008] A first sensor and a second sensor are disposed on the housing. The first sensor is used to detect the ambient temperature, and the second sensor is used to detect the temperature of the lens.

[0009] The controller has the first and second sensors electrically connected to it, and the controller can control the switching state of the regulating element based on the detection results of the first and second sensors.

[0010] Optionally, the head-mounted device further includes a camera disposed in the housing and electrically connected to the controller, the camera being used to photograph the lens to obtain the thickness of the water fog when the lens fogs up.

[0011] Optionally, the housing is further provided with a heating channel connected to the air outlet. The heating channel is provided with a chip and a fan electrically connected to the controller. The controller can control the operation of the fan to cause the heat generated by the chip to be discharged to the air outlet.

[0012] Optionally, the adjusting member is provided with a connecting hole, and the adjusting member is located at the air inlet. In the first state, the connecting hole is positioned relative to the air inlet, and in the second state, the connecting hole is offset from the air inlet, and the adjusting member covers the air inlet.

[0013] Optionally, the adjusting member is configured as an elastic member, which undergoes elastic deformation to change the relative position of the air inlet and the connecting hole.

[0014] Optionally, the housing is formed with a mounting ring groove, which surrounds the outer periphery of the lens on the front side of the lens. The adjusting member is tensioned and installed in the mounting ring groove and surrounds the outer periphery of the lens. The air vent is disposed on the groove wall of the mounting ring groove.

[0015] Optionally, two mounting ring grooves and two lenses are provided in a one-to-one correspondence. The adjusting member includes a first adjusting part disposed in the two mounting ring grooves. The head-mounted device also includes an action part, which is movably disposed between the two lenses and is connected to the two first adjusting parts.

[0016] Optionally, the adjusting member further includes a second adjusting part disposed between the two lenses. The second adjusting part has a ring-shaped structure and is connected to the two first adjusting parts. The head-mounted device further includes a fixing part disposed between the two lenses and fixedly connected to the housing. The second adjusting part is tensioned and sleeved outside the fixing part and the actuating part.

[0017] Optionally, the head-mounted device further includes a drive motor, which is driven and connected to the actuating part.

[0018] Optionally, the actuating part protrudes from the outside of the housing and can be manually driven.

[0019] The present invention also proposes a defogging method for use in a head-mounted device, the head-mounted device comprising:

[0020] A housing and a lens mounted on the housing. The housing is provided with an air inlet, an air outlet, and an air passage connecting the air inlet and the air outlet. Both the air inlet and the air outlet are connected to the outside of the housing. The air inlet is located on the front side of the lens, and the air outlet is located on the rear side of the lens. And / or, the air outlet is arranged relative to the lens in the front-rear direction.

[0021] An adjusting member, movably disposed in the housing, is configured to have a first state of opening the air passage and a second state of cutting off the air passage; and

[0022] A controller, a first sensor, and a second sensor are disposed on the housing, and both the first sensor and the second sensor are electrically connected to the controller;

[0023] The defogging method includes:

[0024] The controller acquires the current ambient temperature detected by the first sensor and the current lens temperature detected by the second sensor, and acquires the dew point temperature of the current ambient temperature; and

[0025] When the current lens temperature is lower than or equal to the dew point temperature, the controller controls the adjustment element to switch to the first state.

[0026] Optionally, the head-mounted device further includes a camera disposed on the housing, and after the step of the controller controlling the adjustment member to switch to the first state, the defogging method further includes the step of:

[0027] The camera acquires a detection image; wherein the detection image carries information about the thickness of the water mist condensed on the lens;

[0028] The controller obtains the current water mist thickness based on the detected image; and

[0029] If the current water mist thickness is less than or equal to the first preset thickness, the controller controls the adjustment component to switch to the second state.

[0030] Optionally, the housing is further provided with a heating channel communicating with the air outlet, and a chip and a fan electrically connected to the controller are disposed in the heating channel. After the step of the controller obtaining the current water mist thickness based on the detection image, the defogging method further includes the step of:

[0031] If the current water mist thickness is greater than or equal to the second preset thickness, the controller controls the fan to operate.

[0032] Optionally, after the step of the controller controlling the operation of the fan, the defogging method further includes the step of:

[0033] The controller determines whether the water mist thickness has decreased; if so, it keeps the fan at its current speed or reduces its speed; if not, it increases the speed of the fan.

[0034] Optionally, the camera acquires a detection image once every preset period.

[0035] The present invention also proposes a computer-readable storage medium storing a defogging program for a head-mounted device, which, when executed by a processor, implements the aforementioned defogging method.

[0036] In the technical solution of this invention, when the ambient temperature rises, for example, when a user wears AR glasses in winter and moves from outdoors to indoors, the environment around the AR glasses allows hot airflow on the front of the lenses to enter the air passage through the air inlet and exit through the air outlet. After the lenses receive the hot airflow from the air outlet, the heating process is accelerated, thereby reducing or even preventing water vapor condensation and minimizing or eliminating interference with the user's vision. Furthermore, this invention enhances the heating effect of the ambient hot air on the lenses when the user wears the head-mounted device, allowing the lenses to be heated to above the dew point temperature of the ambient temperature more quickly. This accelerates the dissipation of water vapor on the lenses, achieving faster defogging. This allows the user to wear the head-mounted device throughout the defogging process, avoiding the inconvenience of removing and putting on the head-mounted device. As the temperature rises, the adjusting mechanism switches to the first state, opening the air passage. After defogging is complete, the adjusting mechanism switches to the second state, cutting off the air passage. This prevents air from flowing behind the lenses when the user is in a cold environment, thus avoiding a cooling sensation to the eyes. It also prevents cold air from lowering the internal temperature of the head-mounted device, which could affect its normal operation and improve the user experience. Therefore, the technical solution of this invention can effectively defog the lenses, preventing users from wiping the lenses with a cloth or paper, which could scratch the waveguide sheet and thus ensure a better user experience. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of an embodiment of the head-mounted device of the present invention;

[0039] Figure 2 for Figure 1 Cross-sectional view along point AA;

[0040] Figure 3 This is an exploded structural diagram of an embodiment of the housing of the head-mounted device of the present invention;

[0041] Figure 4This is a schematic diagram of the internal structure of an embodiment of the head-mounted device of the present invention;

[0042] Figure 5 This is a schematic diagram of the structure of one embodiment of the head-mounted device of the present invention without a front shell cover;

[0043] Figure 6 This is a schematic diagram of the structure of an embodiment of the adjustment component of the head-mounted device of the present invention;

[0044] Figure 7 This is a schematic flowchart of an embodiment of the defogging method of the present invention;

[0045] Figure 8 A simulation comparison diagram of AR glasses using the technical solution of this invention and existing AR glasses;

[0046] Figure 9 This is a simulation comparison diagram of AR glasses using the technical solution of the present invention and existing AR glasses.

[0047] Explanation of icon numbers:

[0048] label name label name 100 case 130 Back cover 101 air passage 200 lens 102 air intake 300 Adjustment component 103 air outlet 301 Through hole 104 Heating Channel 310 First Regulation Department 105 Installation ring groove 320 Second Adjustment Department 110 support 410 Camera 111 Installation port 420 fan 112 Adjustment groove 430 chip 120 Front shell 510 Functional part 121 Avoidance 520 Fixing part

[0049] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0051] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0052] The terms "connection," "installation," and "fixation" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral connection; it can mean a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0053] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0054] This invention proposes a head-mounted device. It is understood that head-mounted devices include AR glasses, MR glasses, VR glasses, and smart glasses, etc. When a user wears this type of head-mounted device, if the ambient temperature suddenly rises—for example, when the user returns indoors from outdoors, or a heat source suddenly appears in front of them—the lens temperature cannot rise quickly enough. Once the lens temperature falls below or equals the dew point temperature of the ambient temperature, fog will condense on the lens, interfering with the user's vision.

[0055] In one embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the head-mounted device includes:

[0056] A housing 100 and a lens 200 mounted on the housing 100. The housing 100 is provided with an air inlet 102, an air outlet 103, and an air passage 101 connecting the air inlet 102 and the air outlet 103. Both the air inlet 102 and the air outlet 103 are connected to the outside of the housing 100. The air inlet 102 is located on the front side of the lens 200; the air outlet 103 is located on the rear side of the lens 200, and / or, the air outlet 103 is disposed relative to the lens 200 in the front-rear direction.

[0057] An adjusting member 300 is movably disposed in the housing 100 to have a first state that opens the air passage 101 and a second state that cuts off the air passage 101.

[0058] In the technical solution of this invention, when the ambient temperature rises, for example, when a user wears AR glasses in winter and moves from outdoors to indoors, the environment around the AR glasses allows hot airflow from the front of the lens 200 to enter the air passage 101 through the air inlet 102 and exit from the air outlet 103. After the lens 200 receives the hot airflow from the air outlet 103, the heating process is accelerated, thereby reducing or even preventing water vapor condensation and minimizing or eliminating interference with the user's vision. Furthermore, this invention enhances the heating effect of the ambient hot air on the lens 200 when the user wears the head-mounted device, allowing the lens 200 to be heated to above the dew point temperature of the ambient temperature more quickly. This accelerates the dissipation of water vapor on the lens 200, achieving faster defogging of the lens 200. This allows the user to wear the head-mounted device throughout the defogging process, avoiding the inconvenience of removing and putting on the head-mounted device. When the temperature rises, the adjusting element 300 can be driven to switch to the first state, opening the air passage 101. After defogging is completed, the adjusting element 300 can be driven to switch to the second state, cutting off the air passage 101. Thus, when the user is in a cold environment, ambient air will not flow to the back of the lens 200, preventing a cooling sensation to the user's eyes. This also prevents cold air from lowering the internal temperature of the head-mounted device, affecting its normal operation and improving the user experience. Therefore, the technical solution of this invention can achieve defogging of the lens 200, preventing users from wiping the water vapor on the lens 200 with a lens cloth or paper, which could scratch the waveguide sheet and thus ensure a better user experience.

[0059] Specifically, such as Figure 2 and Figure 3As shown, the housing 100 includes a support 110, a front shell 120 located on the front side of the support 110, and a rear shell 130 located on the rear side of the support 110. The air passage 101 is formed by the support 110 and the front shell 120. The air outlet 103 is located on the support 110, and the air inlet 102 is located on the front shell 120. Without loss of generality, corresponding to a lens 200, the support 110 and the front shell 120 each have an air passage 101 on the top and bottom sides. Specifically, corresponding to a lens 200, the bracket 110 is provided with a mounting port 111, and the lens 200 is mounted in the mounting port 111. The front shell 120 is provided with a clearance port 121, which is positioned opposite the mounting port 111 to allow the lens 200 to pass. For the air passage 101 on the top side, its air inlet 102 and air outlet 103 are respectively provided on the top side. The air inlet 102 is located on the top wall of the clearance port 121, and the air outlet 103 is located on the rear side of the lens 200. The air outlet 103 is positioned on the side, close to the rear surface of the lens 200, so that the hot airflow from the outlet 103 can directly act on the rear surface of the lens 200. For the bottom air passage 101, its inlet 102 and outlet 103 are correspondingly positioned on the bottom side. The inlet 102 is located on the bottom wall of the clearance opening 121, and the outlet 103 is positioned relative to the lens 200 in the front-rear direction, so that the hot airflow from the outlet 103 can directly act on the periphery of the bottom of the lens 200. Thus, through the arrangement of the two air passages 101, most of the outer periphery of the lens 200 can be affected by the hot airflow, which facilitates the transfer of heat into the lens 200, thereby accelerating the heating process of the lens 200.

[0060] Furthermore, in this embodiment, the head-mounted device also includes a controller (not shown), a first sensor (not shown), and a second sensor (not shown) disposed in the housing 100. The first sensor is used to detect the ambient temperature, and the second sensor is used to detect the temperature of the lens 200. Both the first and second sensors are electrically connected to the controller, and the controller can control the switching state of the adjustment element 300 based on the detection results of the first and second sensors. The first and second sensors can be NTC (Negative Temperature Coefficient) thermistors, and their placement is not limited here, as long as their function can be achieved. This embodiment can realize automatic control of the adjustment element 300. When the ambient temperature rises, the controller can switch the adjustment element 300 to the first state in a timely manner to reduce or even avoid water vapor condensation. When water vapor condenses on the lens 200, the controller can also promptly defog the lens 200. Specifically, the controller can acquire the current ambient temperature detected by the first sensor and the current lens 200 temperature detected by the second sensor. When the controller determines that the current lens 200 temperature is lower than or equal to the dew point temperature of the current ambient temperature, it can control the adjustment component 300 to switch to the first state. Of course, in other embodiments, the adjustment component 300 can also be driven manually. When the ambient temperature rises and the user notices water vapor on the lens 200, the user can manually adjust the adjustment component 300 to the first state. When the water vapor on the lens 200 disappears, the user can then manually adjust the adjustment component 300 to the second state.

[0061] Furthermore, in this embodiment, as Figure 1 , Figure 4 and Figure 5 As shown, the head-mounted device also includes a camera 410, which is disposed in the housing 100 and electrically connected to the controller. The camera 410 is used to photograph the lens 200 to obtain the thickness of the water fog when the lens 200 fogs up. Generally, a camera 410 is provided on the opposite side of each of the two lenses 200. The camera 410 takes a picture from the side towards the front surface of the corresponding lens 200, obtaining a side view of the lens 200 with condensed water fog. Using this side view as the detection image, the thickness of the water fog can be obtained. Thus, by photographing the lens 200 with the camera 410, the controller can obtain the thickness of the water fog on the lens 200. If the water fog thickness is 0 or very small, and the water fog is so light that it does not affect the user's vision, it means that the defogging of the lens 200 is complete. The controller can then control the adjustment component 300 to switch to the second state to cut off the air passage 101. Therefore, when the ambient temperature drops, cold air can be prevented from affecting the user's eyes or the working performance of the head-mounted device.

[0062] Furthermore, in this embodiment, as Figure 4 As shown, the housing 100 is also provided with a heating channel 104 connected to the air outlet 103. A chip 430 and a fan 420 electrically connected to the controller are disposed within the heating channel 104. The controller can control the operation of the fan 420 to expel the heat generated by the chip 430 to the air outlet 103. In this way, the heat generated by the chip 430 can be used to heat the lens 200, which not only enhances the heating effect on the lens 200 but also allows for simultaneous heat dissipation of the chip 430 and defogging of the lens 200, thus reusing the waste heat of the chip 430. This improves the defogging effect while avoiding cost increases. Without loss of generality, the fan 420 is a miniature fan with dimensions of 20mm*20mm*5mm. The controller only activates the fan 420 when the water mist thickness reaches a certain threshold (e.g., 20 micrometers). Furthermore, a temperature sensor can be set to detect the temperature inside the heating channel 104. When the temperature inside the heating channel 104 is too high, the hot airflow discharged from the air outlet 103 will be too high. Before activating the defogging method, the user can be reminded to remove the head-mounted device to avoid discomfort to the user's face caused by the hot airflow. After the fan 420 is started, the temperature sensor can also detect the wind temperature. The controller can obtain the time required for defogging based on the wind temperature, the speed of the fan 420, and the current thickness of the water mist, and remind the user to reuse the head-mounted device after the corresponding time.

[0063] Furthermore, in this embodiment, as Figure 2 and Figure 6As shown, the adjusting member 300 is provided with a connecting hole 301. The adjusting member 300 is located at the air inlet 102. In the first state, the connecting hole 301 is positioned relative to the air inlet 102. In the second state, the connecting hole 301 is offset from the air inlet 102, and the adjusting member 300 covers the air inlet 102. It can be understood that by driving the adjusting member 300 to move relative to the housing 100, the relative position of the connecting hole 301 and the air inlet 102 can be adjusted. Specifically, when the connecting hole 301 is positioned opposite the air inlet 102, the air inlet 102 is opened, the air passage 101 is open, and the adjusting member 300 is in the first state. When the connecting hole 301 and the air inlet 102 are staggered, the air inlet 102 is covered by the adjusting member 300 outside the connecting hole 301, the air passage 101 is cut off, and the adjusting member 300 is in the second state. Furthermore, multiple connecting holes 301 and multiple air inlets 102 are provided at intervals. Multiple air inlets 102 increase the air intake efficiency of the air passage 101 in front of the lens 200. Multiple connecting holes 301 allow adjustment of the diameter of the air inlet 102, the diameter of the connecting hole, the interval between adjacent connecting holes 301, and the interval between adjacent air inlets 102, improving the convenience of switching between the first and second states for the adjusting member 300. Without loss of generality, the diameter of the air inlet 102 can be equal to the diameter of the through-hole, and the interval between any two adjacent air inlets 102 can be equal to the interval between any two adjacent through-holes, and slightly larger than the diameter of the air inlet 102. The interval between any two adjacent air inlets 102 is the distance between the closest points of those two air inlets 102, and the interval between any two adjacent through-holes is similar. Thus, when the adjusting member 300 is in the first state, a slight adjustment to the adjusting member 300 so that the displacement of the adjusting member 300 in the distribution direction of the plurality of connecting through-holes 301 is greater than or equal to the diameter of the air inlet 102 will ensure that each connecting through-hole 301 is located at the interval between any two adjacent air inlets 102, thereby staggering the plurality of connecting through-holes 301 from the plurality of air inlets 102. Of course, in other embodiments, the air inlet 102 may be configured as a strip structure, and the adjusting member 300 may be configured as a slightly longer strip structure, so as to switch between the first state and the second state by moving the adjusting member 300 along its width direction.

[0064] Furthermore, in this embodiment, the adjusting member 300 is configured as an elastic member. The adjusting member 300 undergoes elastic deformation, which can change the relative position of the air inlet 102 and the connecting hole 301. Without loss of generality, the adjusting member 300 can be made of elastic rubber or elastic silicone. Thus, by driving the adjusting member 300 to undergo elastic deformation, the connecting hole 301 can be displaced relative to the air inlet 102, thereby allowing the adjusting member 300 to switch between a first state and a second state. Furthermore, due to its own elasticity, the adjusting member 300 tends to remain in the second state. Thus, when the adjusting member 300 is not subjected to external force, it can stably remain in the second state, allowing the adjusting member 300 to stably cover the air inlet 102. Of course, in other embodiments, the displacement of the connecting hole 301 relative to the air inlet 102 can also be achieved directly by driving the adjusting member 300 to displace relative to the housing 100.

[0065] Furthermore, in this embodiment, as Figure 5 As shown, the housing 100 has a mounting annular groove 105, which surrounds the outer periphery of the lens 200 on the front side. The adjusting member 300 is tensioned and installed in the mounting annular groove 105 and surrounds the outer periphery of the lens 200. The air passage is located on the groove wall of the mounting annular groove 105. It can be understood that the mounting annular groove 105 has an inner annular groove wall and an outer annular groove wall opposite to each other. The air passage is located on the inner annular groove wall. The adjusting member 300 has an annular structure, which is tensioned and fitted onto the inner annular groove wall. Thus, under the elastic action of the adjusting member 300, the adjusting member 300 can stably seal the air inlet 102. When the adjusting member 300 undergoes elastic deformation, the air passage and the air inlet 102 can be misaligned. Of course, in other embodiments, the adjusting member 300 may also cooperate with the air inlet 102 through a long strip structure. One end of the long strip structure is fixed to the housing 100. By acting on the other end of the long strip structure, it can be elastically deformed, thereby changing the relative position between the connecting hole 301 and the air inlet 102.

[0066] Furthermore, in this embodiment, as Figure 5 and Figure 6As shown, two mounting ring grooves 105 and two lenses 200 are provided in a one-to-one correspondence. The adjusting member 300 includes two first adjusting parts 310 respectively disposed in the two mounting ring grooves 105. The head-mounted device also includes an action part 510, which is movably disposed between the two lenses 200 and is tractively connected to the two first adjusting parts 310. When the action part 510 is subjected to external force, it can simultaneously drive the two first adjusting parts 310 to undergo elastic deformation, thereby changing the relative position of the air passages of the two first adjusting parts 310 and the air inlets 102 on the corresponding mounting ring grooves 105. In this way, the switching of the adjusting member 300 between the first state and the second state can be achieved very easily. Of course, in other embodiments, two action parts 510 can also be provided, with one action part 510 correspondingly connected to one first adjusting part 310. In this case, the two first adjusting parts 310 can be adjusted independently by the two action parts 510.

[0067] Furthermore, in this embodiment, as Figure 5 and Figure 6 As shown, the adjusting member 300 further includes a second adjusting part 320 disposed between the two lenses 200. The second adjusting part 320 has a ring-shaped structure and is connected to the two first adjusting parts 310. The head-mounted device also includes a fixing part 520 disposed between the two lenses 200 and fixedly connected to the housing 100. The second adjusting part 320 is tensioned and sleeved outside the fixing part 520 and the actuating part 510. Specifically, as... Figure 3 As shown, the bracket 110 has an adjustment groove 112 located between the two lenses 200. The action part 510 is movably disposed in the adjustment groove 112, and the fixing part 520 is fixed outside the adjustment groove 112. When the action part 510 moves along the distribution direction of the two lenses 200, it can drive the first adjustment part 310 and the second adjustment part 320 to undergo elastic deformation, thereby driving the adjustment member 300 to switch between the first state and the second state.

[0068] Furthermore, in this embodiment, the head-mounted device also includes a drive motor (not shown), which is driven and connected to the actuating part 510. When the controller needs to control the switching of the adjustment member 300's state, the controller should be connected to the drive motor, and the switching of the adjustment member 300's state is controlled by controlling the operation of the drive motor. In this embodiment, adjusting the adjustment member 300 electrically allows for more precise displacement of the actuating part 510, enabling the adjustment member 300 to switch accurately between the first and second states.

[0069] Furthermore, in this embodiment, the actuating part 510 protrudes from the outer side of the housing 100 and can be manually driven. Specifically, the front housing 120 is provided with a through hole relative to the adjustment groove 112, and the actuating part 510 passes through the through hole and can be manually driven by the user. Thus, in some emergency situations, such as when water mist condenses on the lens 200 but the control conditions of the controller are not met or the controller malfunctions, the user can manually switch the adjusting part 300 to the first state to achieve defogging of the lens 200. At this time, in order to prevent the adjustment of the drive motor and the actuating part 510 from interfering with each other, the output shaft of the drive motor can be detachably connected to the actuating part 510. Specifically, the adjusting member 300 can stably remain in the second state under its own elastic action. At this time, the drive motor does not need to be driven by the actuating part 510. Thus, when the user needs to manually adjust the adjusting member 300 to the first state, it will not be interfered with by the drive motor. When it is necessary to switch the adjusting member 300 to the first state electrically, the output shaft of the drive motor is driven by the actuating part 510, and the actuating part 510 drives the adjusting member 300 to elastically deform. When the adjusting member 300 needs to return to the second state, it can be driven by the drive motor, or the drive motor can be disconnected from the actuating part 510, and the adjusting member 300 will naturally return to the first state, and the actuating part 510 will also be driven to reset.

[0070] This invention also proposes a defogging method, applicable to the aforementioned head-mounted device, such as... Figure 7 As shown, the defogging method includes:

[0071] S100, the controller acquires the current ambient temperature detected by the first sensor and the current lens temperature detected by the second sensor, and acquires the dew point temperature of the current ambient temperature; and

[0072] S200. When the current lens temperature is lower than or equal to the dew point temperature, the controller controls the adjustment element to switch to the first state.

[0073] In this embodiment, the controller obtains the dew point temperature of the current environment by detecting the current ambient temperature through the first sensor. This dew point temperature is compared with the current lens temperature detected by the second sensor. If the current lens temperature is lower than or equal to the dew point temperature, it indicates that the lens is prone to fogging. At this time, the controller controls the adjustment component to switch to the first state to open the air passage. After the air passage is opened, the hot airflow on the front side of the lens can enter the air passage through the air inlet and exit through the air outlet. After the lens receives the hot airflow from the air outlet, the heating process can be accelerated, thereby weakening or even preventing water vapor condensation and reducing or even preventing water vapor from interfering with the user's vision. Furthermore, this invention can enhance the heating effect of the ambient hot air on the lens when the user wears the head-mounted device, allowing the lens to be heated to above the ambient dew point temperature more quickly, thereby accelerating the dissipation of water vapor on the lens and achieving faster defogging. This allows the user to wear the head-mounted device throughout the defogging process, avoiding the inconvenience of taking the head-mounted device off and on.

[0074] Furthermore, in this embodiment, as Figure 7 As shown, after step S200, the defogging method further includes the following step:

[0075] S300, the camera acquires a detection image; wherein the detection image carries information about the thickness of the water mist condensed on the lens;

[0076] S400, The controller obtains the current water mist thickness based on the detected image;

[0077] If the current water mist thickness is less than or equal to the first preset thickness, then step S500 is executed, and the controller controls the adjustment component to switch to the second state.

[0078] Specifically, the camera takes a picture from the side of the front surface of the corresponding lens, obtaining a side view of the lens with condensed water vapor. This side view is used as a detection image, which the controller can then use to determine the current water vapor thickness. Generally, the camera acquires a detection image at preset intervals, preferably 10 seconds. This allows for monitoring of the water vapor after fogging, using the camera's detection images, until the current water vapor thickness is less than or equal to a first preset thickness. The first preset thickness can be 0 or slightly greater than 0. At this point, the defogging process is considered complete or about to end, and the controller can switch the adjustment mechanism to a second state to cut off the airflow channel. Therefore, when the user returns to a cooler environment, ambient air will not flow to the back of the lens, preventing a cooling sensation to the user's eyes. This also avoids the cold airflow causing a drop in the internal temperature of the head-mounted device, which could affect its normal operation and improve the user experience.

[0079] Furthermore, in this embodiment, as Figure 7 As shown, after step S400, the defogging method further includes:

[0080] If the current water mist thickness is greater than or equal to the second preset thickness, then step S600 is executed, and the controller controls the fan to operate.

[0081] Thus, if the current water mist thickness is too large, and the natural convection between the heat flow through the air outlet and the lens surface is insufficient for effective defogging, the controller can activate the fan to force convection between the heat flow through the air outlet and the lens surface. The fan operation also forces the heat generated by the chip to be expelled through the air outlet, increasing the temperature of the heat flow and further enhancing the heating effect on the lens, thus promoting defogging. Furthermore, chip heat dissipation and lens defogging occur simultaneously, allowing for the reuse of the chip's waste heat. Additionally, a temperature sensor can be installed to detect the temperature inside the heating channel. If the temperature inside the heating channel is too high, causing excessive heat in the exhaust airflow, the user will be reminded to remove the head-mounted device before activating this defogging method to avoid discomfort to their face from the hot airflow. Once the fan is running, the temperature sensor can also detect the air temperature. The controller can then determine the defogging time required based on the air temperature, fan speed, and the current water mist thickness, reminding the user to reuse the head-mounted device after the appropriate time.

[0082] Furthermore, in this embodiment, after the step of the controller controlling the operation of the fan, the defogging method further includes the step of:

[0083] S700, the controller determines whether the water mist thickness has decreased; if so, it keeps the fan at its current speed or reduces its speed; if not, it increases the speed of the fan.

[0084] Specifically, the controller compares the currently acquired detection image with the previous detection image to determine whether the water mist thickness has decreased. If the current water mist thickness is less than the previous one, it means that the current wind speed can complete defogging in a shorter time. In this case, the fan can maintain its current speed. In particular, when the water mist thickness decreases relatively quickly, the fan speed can be appropriately reduced to defog in a shorter time. Conversely, if the water mist thickness remains unchanged or increases, the controller controls the fan speed to increase the heat flow at the air outlet and the convective heat transfer coefficient of the lens surface, thereby accelerating the lens heating process and promoting the lens defogging process.

[0085] Please refer to Figure 8 and Figure 9The reliability of the head-mounted device for defogging lenses was verified by simulating the technical solution of the present invention. The simulation simulated a scenario where the AR glasses were moved from an external 10°C environment to an indoor environment with 50% relative humidity and a temperature of 28°C. Figure 1 and Figure 2 The figures show a simulation comparison of lens fogging between AR glasses using the technical solution of this invention and existing AR glasses at 200s and 350s after entering the room, respectively. Figure (a) shows the fogging simulation corresponding to the technical solution of this invention, and Figure (b) shows the fogging simulation corresponding to the existing technology. Figure 1 and Figure 2 It can be seen that after 200 seconds indoors, the water fog thickness of the AR glasses using the technical solution of this invention is about 10 micrometers, while the water fog thickness of existing AR glasses has increased to 20 micrometers, making it difficult to see the image on the screen. After 350 seconds, the AR glasses using the technical solution of this invention have almost no water fog on the lenses, but the lenses of existing AR glasses still have obvious water fog. Therefore, the technical solution of this invention can effectively defog the lenses, preventing users from wiping the water fog on the lenses with eyeglass cloths or paper, which could scratch the waveguide sheet and thus ensure a better user experience.

[0086] The present invention also proposes a computer-readable storage medium storing a defogging program for a head-mounted device. When the defogging program is executed by a processor, it implements the aforementioned defogging method. Therefore, the computer-readable storage medium adopts all the technical solutions of all embodiments of the aforementioned defogging method and has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0087] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A head-mounted device, characterized in that, include: A housing and a lens mounted on the housing. The housing is provided with an air inlet, an air outlet, and an air passage connecting the air inlet and the air outlet. Both the air inlet and the air outlet are connected to the outside of the housing. The air inlet is located on the front side of the lens, and the air outlet is located on the rear side of the lens. And / or, the air outlet is arranged relative to the lens in the front-rear direction. as well as An adjusting member is movably disposed in the housing to have a first state that opens the air passage and a second state that cuts off the air passage; The adjusting member is provided with a connecting hole. The adjusting member is located at the air inlet. In the second state, the connecting hole is offset from the air inlet. The adjusting member covers the air inlet. In the first state, the connecting hole is positioned opposite the air inlet. The adjusting member is configured as an elastic member, and the adjusting member undergoes elastic deformation, which can change the relative position of the air inlet and the connecting hole; The housing has a mounting ring groove, which surrounds the outer periphery of the lens on the front side of the lens. The adjusting member is tensioned and installed in the mounting ring groove and surrounds the outer periphery of the lens. The air passage is provided in the groove wall of the mounting ring groove. Two mounting ring grooves and two lenses are provided in a one-to-one correspondence. The adjusting member includes a first adjusting part disposed in the two mounting ring grooves. The head-mounted device also includes an action part, which is movably disposed between the two lenses and is connected to the two first adjusting parts.

2. The head-mounted device as described in claim 1, characterized in that, The head-mounted device also includes: A first sensor and a second sensor are disposed on the housing. The first sensor is used to detect the ambient temperature, and the second sensor is used to detect the temperature of the lens. The controller has the first and second sensors electrically connected to it, and the controller can control the switching state of the regulating element based on the detection results of the first and second sensors.

3. The head-mounted device as described in claim 2, characterized in that, The head-mounted device also includes a camera, which is disposed in the housing and electrically connected to the controller. The camera is used to photograph the lens to obtain the thickness of the water fog when the lens fogs up.

4. The head-mounted device as described in claim 2, characterized in that, The housing is also provided with a heating channel connected to the air outlet. A chip and a fan electrically connected to the controller are provided in the heating channel. The controller can control the operation of the fan to cause the heat generated by the chip to be discharged to the air outlet.

5. The head-mounted device according to any one of claims 1 to 4, characterized in that, The adjusting component further includes a second adjusting part disposed between the two lenses. The second adjusting part has a ring-shaped structure and is connected to the two first adjusting parts. The head-mounted device also includes a fixing part disposed between the two lenses and fixedly connected to the housing. The second adjusting part is tensioned and sleeved outside the fixing part and the actuating part.

6. The head-mounted device as described in claim 5, characterized in that, The head-mounted device also includes a drive motor, which is driven and connected to the functional part; And / or, the actuating part protrudes from the outside of the housing and can be manually driven.

7. A method for defogging, characterized in that, Applied to the head-mounted device of claim 1, the head-mounted device further includes a controller, a first sensor, and a second sensor disposed in the housing, wherein the first sensor and the second sensor are both electrically connected to the controller, and the defogging method includes: The controller acquires the current ambient temperature detected by the first sensor and the current lens temperature detected by the second sensor, and acquires the dew point temperature of the current ambient temperature; and When the current lens temperature is lower than or equal to the dew point temperature, the controller controls the adjustment element to switch to the first state.

8. The defogging method as described in claim 7, characterized in that, The head-mounted device also includes a camera disposed on the housing. After the step of the controller controlling the adjustment component to switch to the first state, the defogging method further includes the step of: The camera acquires a detection image; wherein the detection image carries information about the thickness of the water mist condensed on the lens; The controller obtains the current water mist thickness based on the detected image; and If the current water mist thickness is less than or equal to the first preset thickness, the controller controls the adjustment component to switch to the second state.

9. The defogging method as described in claim 8, characterized in that, The housing is also provided with a heating channel communicating with the air outlet. A chip and a fan electrically connected to the controller are disposed within the heating channel. After the controller obtains the current water mist thickness based on the detected image, the defogging method further includes the following steps: If the current water mist thickness is greater than or equal to the second preset thickness, the controller controls the fan to operate.

10. The defogging method as described in claim 9, characterized in that, After the step of the controller controlling the operation of the fan, the defogging method further includes the step of: The controller determines whether the water mist thickness has decreased; if so, it keeps the fan at its current speed or reduces its speed; if not, it increases the speed of the fan.

11. The defogging method as described in claim 10, characterized in that, The camera acquires a detection image once every preset period.

12. A computer-readable storage medium, characterized in that, The device stores a defogging program for a head-mounted device, which, when executed by a processor, implements the defogging method according to any one of claims 7 to 11.

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