Intelligent glasses, shielding detection assembly and electronic equipment

Abstract

According to the shielding detection assembly applied to the intelligent glasses and the electronic equipment, the first end face of a light guide part is smaller than the second end face, the side face connecting the first end face and the second end face is arranged to be an inclined face, and a light source and the first end face are oppositely arranged; the light-sensitive element and the light source are arranged at an interval and deviate from the first end face, so that indication light of the light source can be prevented from directly irradiating or radiating to the light-sensitive element from the light guide part, the robustness of shielding detection is improved, the structure of the shielding detection assembly is simplified, and the size of the shielding detection assembly is reduced. When the indication light emitted out of the shielding detection assembly encounters an obstacle, formed reflected light is emitted into the photosensitive element through the second end face and the side face in sequence, the emergent area of the indication light and the incident light sensing area for shielding detection can share the same area, and it is avoided that when only the emergent area of the indication light is shielded, the incident light sensing area of the shielding detection assembly is blocked. And the shielding detection of the indication light is invalid.

Description

Technical Field

[0001] This invention relates to the field of smart wearable device technology, and more specifically, to a smart pair of glasses, an occlusion detection component, and an electronic device. Background Technology

[0002] With the development of technology, more and more wearable smart devices are entering people's daily lives. For example, smart glasses are a common type of wearable device. By integrating electronic components into the glasses, smart glasses can have functions such as image display, audio playback, and signal acquisition. Some wearable smart devices have image shooting functions, but when users use wearable smart devices to take photos or videos in public places or private spaces, they may be recording images or videos of others without their knowledge, thus infringing on their privacy rights. Although some wearable devices (such as smart glasses) have shooting status indicator lights to prompt shooting, the indicator light emission area and the light detector incident area of ​​these existing devices are spatially separated. This means that when only the indicator light emission area is blocked, the light detector's response value will not change, rendering the blocking detection of the shooting status indicator light ineffective. Furthermore, this design requires the indicator light and sensor to be isolated from each other, resulting in a larger module size, which is not conducive to the miniaturization of the device. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide smart glasses, an occlusion detection component, and an electronic device, which are beneficial to improving at least some of the problems existing in the prior art.

[0004] In a first aspect, embodiments of the present invention provide smart glasses, including a glasses body, a control circuit, and an occlusion detection component; the surface of the glasses body has a viewing window; the occlusion detection component is disposed in the glasses body, and the occlusion detection component includes a housing, a light guide, a light source, and a photosensitive element; the housing has a mounting cavity, and the housing has an opening communicating with the outside and the mounting cavity, the opening being disposed at or opposite to the viewing window; the light guide is disposed in the mounting cavity, and the light guide has a first end face, a second end face, and a side face, the first end face and the second end face being disposed opposite each other along an axis, the side face connecting the first end face and the second end face, the second end face being disposed at the opening, the first end face being disposed within the mounting cavity and away from the opening, and the area of ​​the first end face being smaller than the area of ​​the second end face. The side surface is a curved surface that gradually expands from the first end face to the second end face, and a scattering cavity is defined between the side surface and the inner wall of the mounting cavity; a light source is disposed in the mounting cavity and is positioned opposite to the first end face, and the light source is electrically connected to the control circuit; a photosensitive element is disposed in the scattering cavity, and the photosensitive element is spaced apart from the light source and offset from the first end face, and the photosensitive element is configured to detect light rays incident from outside the housing sequentially through the second end face and the side surface and generate a light detection signal; wherein, the control circuit is configured to: control the light source to emit an indicator light; determine the occlusion state of the window based on the light detection signal, the occlusion state of the window including an occluded state and an unoccluded state; and control the working state of the smart glasses based on the occlusion state of the window.

[0005] Furthermore, the second end face has a scattering film and / or the first end face is provided with an antireflection film.

[0006] Furthermore, the generatrix of the side is a straight line segment, a curved segment, or a combination of a straight line segment and a curved segment.

[0007] Furthermore, the generatrix of the side is a straight line, and the generatrix of the side has a first angle with the axis, the first angle satisfying the following formula:

[0008]

[0009] Wherein, θ is the first included angle, A is the divergence angle of the light source, and n is the refractive index of the material of the light guide.

[0010] Furthermore, the optical axis of the light source is coaxial with the axis, and the divergence angle of the light source is less than or equal to 120°.

[0011] Furthermore, the control circuit is also configured to: determine a reference light intensity value based on the light detection signal when the light source is in the off state; controlling the light source to emit an indicator light includes: controlling the light source to emit light during a first time period; and controlling the light source to turn off during a second time period; determining the occlusion state of the window based on the light detection signal includes: determining the occlusion state of the window based on the off light intensity value and the reference light intensity value, wherein the off light intensity value is the light intensity value of the light detection signal corresponding to the second time period; wherein determining the occlusion state of the window based on the off light intensity value and the reference light intensity value includes: determining the occlusion state of the window as the unoccluded state when the difference between the reference light intensity value and the off light intensity value is less than a first threshold and greater than a second threshold; determining the occlusion state of the window as the occluded state when the off light intensity value is zero; and determining the occlusion state of the window as the unoccluded state when the difference between the reference light intensity value and the off light intensity value is greater than a third threshold, wherein the third threshold is greater than the first threshold.

[0012] Further, determining the occlusion state of the window based on the light detection signal further includes: determining the occlusion state of the window based on the on-light intensity value and the reference light intensity value, wherein the on-light intensity value is the light intensity value of the light detection signal corresponding to the first time period; determining the occlusion state of the window based on the on-light intensity value and the reference light intensity value includes: determining the occlusion state of the window as occluded when the difference between the on-light intensity value and the reference light intensity value is greater than a fourth threshold; wherein the control circuit is configured to control the light source to turn off in the second time period when the difference between the on-light intensity value and the reference light intensity value is less than or equal to the fourth threshold.

[0013] Furthermore, the smart glasses also include a camera assembly disposed on the main body of the glasses and electrically connected to the control circuit; wherein, controlling the light source to emit an indicator light includes: when the camera assembly is activated, controlling the light source to emit an indicator light in a shooting prompt mode; controlling the working state of the smart glasses according to the occlusion state of the viewing window includes: controlling the working state of the camera assembly according to the occlusion state of the viewing window.

[0014] Furthermore, controlling the working state of the shooting component according to the occlusion state of the window includes: when the occlusion state of the window is occluded, controlling the shooting component to power off; the control circuit is also configured to: when the shooting component is powered off, controlling the light source to exit the shooting prompt mode.

[0015] Furthermore, the smart glasses also include a display component disposed on the main body of the glasses and electrically connected to the control circuit; the control circuit is further configured to: determine the ambient light intensity state based on the light detection signal when the light source is off; adjust the display brightness of the display component based on the ambient light intensity state when the display component is in display state; and stop adjusting the display brightness of the display component when the light source emits the indicator light.

[0016] Secondly, embodiments of the present invention also provide an occlusion detection component, including a housing, a light guide, a light source, and a photosensitive element; the housing has a mounting cavity, and the housing has an opening communicating with the outside and the mounting cavity; the light guide is disposed in the mounting cavity, and the light guide has a first end face, a second end face, and a side face, the first end face and the second end face are disposed opposite each other along an axis, the side face connects the first end face and the second end face, the second end face is disposed in the opening, the first end face is disposed in the mounting cavity and away from the opening, the area of ​​the first end face is smaller than the area of ​​the second end face, the side face is a curved surface that gradually expands from the first end face to the second end face, and a scattering cavity is defined between the side face and the inner wall of the mounting cavity; the light source is disposed in the mounting cavity and is disposed opposite to the first end face; the photosensitive element is disposed in the scattering cavity, the photosensitive element is spaced apart from the light source and offset from the first end face, and the photosensitive element is configured to detect light rays incident from outside the housing sequentially through the second end face and the side face and generate a light detection signal.

[0017] Thirdly, embodiments of the present invention also provide an electronic device, including a device body, a control circuit, and an occlusion detection component as described in the second aspect; the surface of the device body has a window; the occlusion detection component is disposed on the device body, and the opening is disposed on or opposite to the window; the control circuit is electrically connected to the occlusion detection component, and the control circuit is configured to: control the light source to emit an indicator light; determine the occlusion state of the window based on the light detection signal, the occlusion state of the window including an occluded state and an unoccluded state; and control the operating state of the electronic device based on the occlusion state of the window.

[0018] This invention provides smart glasses, an occlusion detection component, and an electronic device. The occlusion detection component features a light guide with a first end face smaller than the second end face, an inclined side connecting the first and second end faces, a light source positioned opposite the first end face, and a photosensitive element spaced apart from and offset from the first end face. This design prevents the indicator light from directly illuminating or radiating from the light guide to the photosensitive element, improving the robustness of occlusion detection and simplifying the structure and reducing the size of the occlusion detection component. When the indicator light emitted from the occlusion detection component encounters an obstacle, the reflected light sequentially passes through the second end face and the side face and enters the photosensitive element. This allows the emission area of ​​the indicator light and the incident light sensing area for occlusion detection to share the same area, preventing the occlusion detection from failing when only the emission area of ​​the indicator light is blocked. Attached Figure Description

[0019] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the invention with reference to the accompanying drawings, in which:

[0020] Figure 1 This is a schematic block diagram of the structure of an electronic device according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of smart glasses according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic block diagram of the structure of smart glasses according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of an occlusion detection component according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of an occlusion detection component according to an embodiment of the present invention performing occlusion detection.

[0025] Explanation of reference numerals in the attached figures:

[0026] θ - First included angle; 1 - Smart glasses; 2 - Electronic device; 3 - Obstacle; 4 - Indicator light; 5 - Reflected light; 10 - Glasses body; 11 - Frame; 12 - Temple; 13 - Window; 20 - Shooting component; 30 - Occlusion detection component; 31 - Housing; 311 - Opening; 32 - Light guide; 321 - First end face; 322 - Second end face; 323 - Side; 324 - Axis; 33 - Light source; 34 - Photosensitive element; 40 - Control circuit; 50 - Display component; 60 - Device body. Detailed Implementation

[0027] The present application is described below based on embodiments, but it is not limited to these embodiments. In the detailed description of the present application below, certain specific details are described in detail. Those skilled in the art can fully understand the present application without these details. To avoid obscuring the substance of the present application, well-known methods, processes, flows, elements, and circuits are not described in detail.

[0028] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0029] Unless the context explicitly requires it, words such as "including" or "contains" throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, meaning "including but not limited to".

[0030] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0031] The solutions described in this specification and embodiments, if involving the processing of personal information, will be processed only under the premise of having a legal basis (such as obtaining the consent of the personal information subject, or being necessary for the performance of a contract), and will only be processed within the scope stipulated or agreed upon. A user's refusal to process personal information beyond what is necessary for basic functions will not affect the user's use of basic functions.

[0032] Reference Figures 1-5 One aspect of this invention relates to an occlusion detection component 30, which can be applied to an electronic device 2 to realize occlusion detection in a specific area, such as occlusion detection of the area where components such as sensors, display areas, indicator lights, and microphones are located. Figure 4 and Figure 5 This is a schematic diagram of the occlusion detection component 30 installed in the electronic device 2, see reference. Figure 4 and Figure 5 The occlusion detection component 30 can be disposed on the surface of the electronic device 2. For example, the electronic device 2 includes a device body 60 and a control circuit 40. The surface of the device body 60 has a light-transmitting window 13, through which the occlusion detection component 30 can acquire optical signals and generate light detection signals. The control circuit 40 may include a processor and circuitry connecting the processor to the occlusion detection component 30 and other components in the electronic device 2. Optionally, a flexible printed circuit board (FPC) can be used to realize the electrical connections between the occlusion detection component 30 and the processor, and between other components in the electronic device 2 and the processor. Figure 1As shown, the control circuit 40 is electrically connected to the occlusion detection component 30 and receives the light detection signal from the occlusion detection component 30 to determine the occlusion state of the window 13. Furthermore, it can control the electronic device 2 accordingly based on the occlusion state of the window 13. The occlusion state of the window 13 includes an occluded state and an unoccluded state.

[0033] The occlusion detection component 30 of this embodiment includes a housing 31, a light guide 32, a light source 33, and a photosensitive element 34. The housing 31 has a mounting cavity, and its surface has an opening 311 communicating with the outside and the mounting cavity. This opening 311 can be disposed on or opposite to a viewing window 13. The light source 33 is disposed in the mounting cavity and is used to emit an indicator light 4 to the outside of the electronic device 2 through the opening 311 and the viewing window 13. The light guide 32 is at least partially disposed in the mounting cavity and is used to guide the indicator light 4 from the light source 33 to the opening 311 and emit it outwards. The light guide 32 can be made of a high-transmittance material, such as PMMA, PC, or glass, with a refractive index higher than the surrounding environment, and its shape controls the propagation path and light emission effect of the light. The photosensitive element 34 is disposed within the mounting cavity and spaced apart from the light source 33, and is used to detect light entering from outside the housing 31 through the light guide 32, converting the light signal into an electrical signal to generate a light detection signal. The mounting position of the photosensitive element 34 can be determined according to the illumination area of ​​the light source 33, so that the photosensitive element 34 is located outside the illumination area of ​​the light source 33, avoiding direct illumination of the photosensitive element 34 by the indicator light 4. Optionally, the photosensitive element 34 and the light source 33 can be disposed on the same printed circuit board or disposed on different printed circuit boards. When the light source 33 emits the indicator light 4, if the window 13 is blocked by the obstacle 3, at least a portion of the indicator light 4 will be reflected by the obstacle 3 and re-enter the mounting cavity and reach the photosensitive element 34. Therefore, there is a difference in the light reaching the photosensitive element 34 when the window 13 is in a blocked state and when it is not blocked, resulting in a difference in the light detection signal. Thus, the blocking state of the window 13 can be determined based on the light detection signal.

[0034] In some applications, electronic devices 2 need to use indicator lights to indicate their specific operating states, allowing users or other personnel to observe their status. For example, some electronic devices 2 include a camera component 20 with image capture capabilities. When the image capture function is enabled, the electronic device 2 uses an indicator light to indicate its capturing state, alerting those nearby that it is capturing images and preventing unauthorized or improper capturing behavior. However, in some cases, the user of the electronic device 2 may unintentionally or intentionally block the area from which the indicator light is emitted, preventing those nearby from recognizing that the electronic device 2 is capturing images. Optionally, the indicator light 4 is visible light for human observation, and the light source 33 can be a light-emitting diode (LED) or other visible light source 33. When the camera component 20 is activated, the control circuit 40 can control the light source 33 of the occlusion detection component 30 to emit the indicator light 4 in a capturing prompt mode as an indication of the electronic device 2's capturing state. Furthermore, the occlusion status of the viewing window 13, determined by the light detection signal, indicates whether the indicator light 4 is blocked. That is, the occlusion detection component 30 can perform both the function of indicating the working status of the electronic device 2 and the function of occlusion detection. In this case, the control circuit 40 can control the working status of the shooting component 20 according to the occlusion status of the window 13. For example, when the determined occlusion status of the window 13 is occluded, the shooting component 20 is powered off to avoid unauthorized shooting behavior.

[0035] Furthermore, since the indicator light 4 emitted and the reflected light 5 incident on the photosensitive element 34 in this embodiment of the invention need to pass through the same light guide 32, compared with setting the light path of the indicator light 4 emitted and the light path of the reflected light 5 irradiating the photosensitive element 34 as two completely separate light paths, the technical solution of this embodiment of the invention can effectively avoid the problem that the photosensitive element 34 cannot produce a change in detection value when only the emission area of ​​the indicator light 4 is blocked, thus causing the blockage detection to fail.

[0036] In a more specific example, refer to Figure 2 and Figure 3The electronic device 2 can be smart glasses 1, and the main body 60 can be glasses body 10. Glasses body 10 can include a frame 11 and temples 12. The temples 12 are located at both ends of the frame 11, with the front end of each temple 12 connected to the frame 11 and the rear end extending backward. Lenses can be placed in the frame 11. Smart glasses 1 also includes a shooting component 20 mounted on glasses body 10. The shooting component 20 is used to controllably acquire images of smart glasses 1 in a predetermined direction. Control circuit 40 is electrically connected to shooting component 20 and occlusion detection component 30, respectively. After control circuit 40 controls light source 33 to emit indicator light 4 in shooting prompt mode, the indicator light 4 is led out through opening 311 via light guide 32 and emitted outward through window 13 of glasses body 10. Preferably, the direction in which the indicator light 4 is emitted through window 13 is the same as the shooting direction of shooting component 20, for example, it is located on the same side of glasses body 10, to ensure that the subject can clearly see the indicator light 4 and know that they are being photographed during the shooting process of shooting component 20.

[0037] Depending on the specific application scenario, the imaging component 20 and the occlusion detection component 30 can be mounted on the frame 11 or the temple 12. In one embodiment, both the imaging component 20 and the occlusion detection component 30 can be mounted on the frame 11. The frame 11 has an installation space that communicates with the surface of the frame 11 through mounting holes. The occlusion detection component 30 is disposed in the installation space, and the viewing window 13 is disposed on the frame 11. The control circuit 40 can be disposed in the temple 12, in the frame 11, or distributed in both the frame 11 and the temple 12. The control circuit 40 may include a processor and circuitry connecting the processor to the occlusion detection component 30, the imaging component 20, and other components in the smart glasses 1. Optionally, a flexible printed circuit board (FPC) can be used to realize the electrical connection between the occlusion detection component 30 and the processor, and between the imaging component 20 and the processor. The control circuit 40 can be disposed in the temple 12, in the frame 11, or distributed in both the frame 11 and the temple 12. Preferably, the window 13 is sealed to the mounting hole to achieve waterproof and dustproof protection for the smart glasses 1.

[0038] In some application scenarios, the photosensitive element 34 of the occlusion detection component 30 can also be used to detect ambient light, achieving functional reuse, improving the utilization rate of the occlusion detection component 30, and facilitating the miniaturization of the electronic device 2. When the light source 33 is not emitting light, the light emitted from the window 13 and the light guide 32 to the photosensitive element 34 is mainly ambient light. At this time, the light detection signal of the photosensitive element 34 can reflect the intensity of the ambient light. The control circuit 40 of the smart glasses 1 can determine the intensity of the ambient light based on the light detection signal and control the smart glasses 1 accordingly based on the determined ambient light intensity. Optionally, such as Figure 3As shown, the smart glasses 1 may further include a display component 50 for displaying images. The display component 50 may be disposed on the frame 11 and electrically connected to the control circuit 40. When the light source 33 is not emitting light, the control circuit 40 determines the ambient light intensity state based on the light detection signal. When the display component 50 is in display mode, the control circuit 40 adjusts the display brightness of the display component 50 according to the determined ambient light intensity state. When the ambient light intensity increases, the display brightness of the display component 50 is increased; when the ambient light intensity decreases, the display brightness of the display component 50 is decreased. This allows for intelligent adjustment of the display brightness of the display component 50 according to changes in ambient light, improving the visual effect for the user viewing images. In some embodiments, the display component 50 may include a microdisplay, an illumination system, a waveguide, or other structures. The display brightness can be adjusted by regulating the waveguide, regulating the current of the illumination system, or other feasible methods. This embodiment of the invention does not limit this.

[0039] In this embodiment of the invention, the control circuit 40 of the smart glasses 1 can activate the shooting component 20 in response to a shooting request. A shooting request refers to a request to activate the shooting component 20 to acquire an image. Optionally, the user can initiate a shooting request by performing a predetermined operation on the smart glasses 1 (e.g., clicking a button, using voice commands, gesture commands, etc.). After receiving the shooting request, the control circuit 40 controls the shooting component 20 to start shooting if other conditions for activating the shooting function are met.

[0040] In one embodiment, when the shooting component 20 is activated, the control circuit 40 can control the light source 33 to emit an indicator light 4 in shooting prompt mode, while the photosensitive element 34 simultaneously enters the occlusion detection mode. When the light source 33 emits the indicator light 4, the light detection signal may be affected by reflected light 5 from external obstacles 3, thus failing to accurately reflect the ambient light state. Therefore, the control circuit 40 can stop adjusting the display brightness of the display component 50. When the light source 33 emits the indicator light 4 in shooting prompt mode, the control circuit 40 determines the occlusion state of the window 13 based on the light detection signal and controls the operating state of the shooting component 20 accordingly. For example, if the window 13 is in an occluded state, it indicates that the indicator light 4 may be difficult for the subject to observe due to the obstruction of the window 13 by the obstacle 3. In this case, the control circuit 40 can control the shooting component 20 to power off or stop shooting in other ways to prevent the user from shooting the subject without their knowledge. In addition, when it is determined that the window 13 is blocked, a prompt sound can be played through the speaker on the smart glasses 1, or a prompt message can be displayed to the user through the display component 50 to remind the user that the window 13 needs to be unblocked in order to continue using the shooting function.

[0041] In another embodiment, the control circuit 40 may, upon receiving a shooting request, first control the light source 33 to emit light in shooting prompt mode before the shooting component 20 is activated, and then activate the shooting function of the shooting component 20 only when the occlusion state of the window 13, determined by the light detection signal, is unoccluded. When the shooting component 20 is in sleep mode or powered off, the control circuit 40 may control the light source 33 to exit the shooting prompt mode and stop emitting the indicator light 4.

[0042] Reference Figure 4 and Figure 5 In this embodiment of the invention, the light guide 32 has a first end face 321, a second end face 322, and a side face 323. The first end face 321 and the second end face 322 are disposed opposite each other along the axis 324 of the light guide 32, and the side face 323 connects the first end face 321 and the second end face 322. The second end face 322 is disposed at the opening 311, and the first end face 321 is disposed in the mounting cavity and away from the opening 311. The area of ​​the first end face 321 is smaller than the area of ​​the second end face 322. The side face 323 is a curved surface that gradually expands from the first end face 321 to the second end face 322. The generatrix of the side face 323 can be a straight line segment, a curved segment, or a combination of a straight line segment and a curved segment. The first end face 321 and the second end face 322 can be circular, elliptical, polygonal, or other shapes. In one embodiment, the first end face 321 and the second end face 322 are circular, and the generatrix of the side face 323 is a straight line, that is, the light guide 32 is a frustum. The light source 33 is positioned opposite to the first end face 321, and the optical axis of the light source 33 can be coaxially aligned with the axis 324 of the guide member. A scattering cavity is defined between the side surface 323 and the inner wall of the mounting cavity. The photosensitive element 34 is disposed within the scattering cavity and located on one side of the side surface 323, offset from the first end face 321. The projection of the side surface 323 along a direction parallel to the axis 324 of the light guide member 32 covers the area where the photosensitive element 34 is located, as shown in the reference diagram. Figure 5When the indicator light 4 is reflected by the obstacle 3 in front of the window 13, forming reflected light 5, it passes through the window 13 and enters the second end face 322. At least a portion of the reflected light 5 transmitted in the light guide 32 will exit from the side 323 to the photosensitive element 34. Through the design of the shape of the light guide 32 and the arrangement of the relative positions of the light source 33, the light guide 32 and the photosensitive element 34, the indicator light 4 emitted by the light source 33 enters the light guide 32 from the first end face 321 and exits from the second end face 322. Even if no additional light isolation element is provided between the light source 33 and the photosensitive element 34, it can better prevent the indicator light 4 from directly illuminating or being scattered by the side 323 to the photosensitive element 34, causing background noise and affecting the accuracy of the occlusion detection result. It is also beneficial to reduce the overall size of the occlusion detection component 30. Optionally, as needed, a barrier made of opaque material can be provided between the light source 33 and the photosensitive element 34. Optionally, an antireflective film can be provided on the first end face 321 to increase transmission and reduce the reflection of the indicator light 4 at the first end face 321, preventing the indicator light 4 reflected at the first end face 321 from illuminating the photosensitive element 34. Optionally, the second end face 322 has a scattering film to achieve a uniform light effect, making the indicator light 4 emitted from the viewing window 13 more uniform. Preferably, the housing 31 is made of opaque material to prevent ambient light from directly passing through the housing 31 to illuminate the internal photosensitive element 34. The material of the housing 31, or at least the inner wall of the mounting cavity, is a low light reflectivity material to further prevent light from being reflected by the inner wall of the mounting cavity to the photosensitive element 34.

[0043] In one embodiment, the generatrix of side surface 323 is a straight line, and the generatrix of side surface 323 forms a first included angle θ with axis 324. The first included angle θ satisfies the following formula:

[0044]

[0045] Where θ is the first included angle θ, A is the divergence angle of the light source 33, and n is the refractive index of the material of the light guide 32. This arrangement allows the indicator light 4 emitted by the light source 33 to be transmitted outward through the light guide 32 as much as possible, preventing the indicator light 4 from directly illuminating or being reflected by the surface of the light guide 32 to the photosensitive element 34. Optionally, the divergence angle of the light source 33 is less than or equal to 120° to allow sufficient space for the installation of the photosensitive element 34 and to reduce the lateral dimension of the occlusion detection assembly 30.

[0046] In some embodiments, the control circuit 40 of the smart glasses 1 can determine a reference light intensity value based on a light detection signal when the light source 33 is off. Further, the reference light intensity value can be determined by the light detection signal within a predetermined time period (e.g., 3 seconds, 5 seconds, 10 seconds) before the control circuit 40 controls the light source 33 to emit light according to an instruction. For example, the reference light intensity value can be determined by the light detection signal within a predetermined time period before the control circuit 40 controls the light source 33 to emit the indicator light 4 in a shooting prompt mode; in this case, the reference light intensity value can indicate the current ambient light conditions when the shooting component 20 is activated.

[0047] In some embodiments, the control circuit 40 can control the on / off state of the light source 33 according to a timing sequence, and determine the occlusion state of the window 13 based on the light detection signal and reference light intensity value in different time periods. For example, the control circuit 40 controls the light source 33 to emit light in a first time period and turn off in a second time period, wherein the duration of the second time period is a small value, which in this embodiment may be less than 0.1 seconds. The control circuit 40 determines the on-light intensity value and the off-light intensity value according to the light detection signal of the photosensitive element 34 according to the timing sequence of the first and second time periods, wherein the on-light intensity value is the light intensity value of the light detection signal corresponding to the first time period, and the off-light intensity value is the light intensity value of the light detection signal corresponding to the second time period. The magnitude of the on-light intensity value is affected by two factors: the reflected light 5 formed by the reflection of the indicator light 4 by the obstruction in front of the window 13 and the ambient light. Since some of the ambient light is blocked when there is an obstacle 3 in front of the window 13, the ambient light incident on the photosensitive element 34 is also reduced. In some scenarios, when the occlusion detection component 30 emits an indicator light 4 through the window 13, the amount of reduction in reflected light 5 incident on the window 13 due to the obstruction and the ambient light may be approximately equal. In such cases, simply comparing the intensity value of the open light with the reference light intensity value may not accurately determine the occlusion state of the window 13. Since the light intensity value corresponding to the light detection signal is not affected by the reflected light 5 after the light source 33 is turned off, but is mainly affected by the ambient light, if the window 13 is not obstructed by the obstacle 3, the intensity value of the closed light is approximately the same as the reference light intensity value; however, if the window 13 is obstructed by the obstacle 3, the intensity value of the closed light will decrease to some extent relative to the reference light intensity value. Therefore, the control circuit 40 can determine the occlusion state of the window 13 based on the intensity value of the closed light and the reference light intensity value. Specifically, when the difference between the reference light intensity value and the off light intensity value is less than a first threshold and greater than a second threshold, the occlusion state of window 13 can be determined to be unoccluded. The first and second thresholds can be 0 or values ​​near 0. That is, when the difference between the reference light intensity value and the off light intensity value is very small, the occlusion state of window 13 can be determined to be unoccluded. When the off light intensity value is zero, the surface window 13 may be completely blocked, and no ambient light enters the photosensitive element 34. Therefore, the occlusion state of window 13 can be determined to be blocked. When the difference between the reference light intensity value and the off light intensity value is greater than a third threshold (where the third threshold is greater than the first threshold), that is, when the difference between the reference light intensity value and the off light intensity value is large, it indicates that the ambient light incident on the photosensitive element 34 may be blocked due to the occlusion of window 13. At this time, the occlusion state of window 13 can be determined to be unoccluded.

[0048] Furthermore, the control circuit 40 can also determine the occlusion state of the window 13 based on the intensity value of the on-light beam and the intensity value of the reference light beam. For example, when the difference between the intensity value of the on-light beam and the intensity value of the reference light beam is greater than a fourth threshold, the occlusion state of the window 13 can be determined to be occluded. The fourth threshold can be a relatively large value, that is, when the difference between the intensity value of the on-light beam and the intensity value of the reference light beam is large, it indicates that there may be an obstruction in front of the window 13 that has blocked the indicator light 4 and formed a large intensity of reflected light 5, so the occlusion state of the window 13 can be determined to be occluded. Specifically, when the difference between the intensity value of the on-light beam and the intensity value of the reference light beam is less than or equal to the fourth threshold, the light source 33 can be turned off in the second time period, and the above-mentioned judgment process of determining the occlusion state of the window 13 by controlling the light source 33 to turn on and off in sequence and based on the intensity value of the off-light beam and the intensity value of the reference light beam can be performed.

[0049] The occlusion detection component 30 of this invention includes a light guide 32 with a first end face 321, a second end face 322, and a side face 323. The first end face 321 and the second end face 322 are arranged opposite each other along the axis 324. The side face 323 connects the first end face 321 and the second end face 322. The area of ​​the first end face 321 is smaller than the area of ​​the second end face 322. The side face 323 is a curved surface that gradually expands from the first end face 321 to the second end face 322. A scattering cavity is defined between the side face 323 and the inner wall of the mounting cavity. The light source 33 is arranged opposite to the first end face 321. The photosensitive element 34 is spaced apart from the light source 33 and offset from the first end face 321. This avoids the indicator light 4 of the light source 33 from directly irradiating or radiating from the light guide 32 to the photosensitive element 34, thereby improving the robustness of occlusion detection and simplifying the structure and reducing the volume of the occlusion detection component 30. When the indicator light 4 emitted from the occlusion detection component 30 encounters an obstacle 3, the reflected light 5 is emitted from the outer casing 31, passing sequentially through the second end face 322 and the side face 323, and then into the photosensitive element 34. When the occlusion detection component 30 is applied to the electronic device 2, it can realize the functions of status indication and occlusion detection. In this way, the emission area of ​​the indicator light 4 and the incident light sensing area for occlusion detection can share the same area, avoiding the situation where the occlusion detection of the indicator light 4 fails when only the emission area of ​​the indicator light 4 is blocked. Furthermore, the occlusion detection component 30 has a higher integration level, which is beneficial for reducing the overall size.

[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A type of smart glasses, characterized in that, include: The main body of the glasses has a viewing window on its surface; Control circuit; as well as An occlusion detection component is disposed on the main body of the glasses, the occlusion detection component comprising: The housing has a mounting cavity and an opening communicating with the outside and the mounting cavity, the opening being located in or opposite to the viewing window; A light guide is disposed in the mounting cavity. The light guide has a first end face, a second end face, and a side face. The first end face and the second end face are disposed opposite each other along an axis. The side face connects the first end face and the second end face. The second end face is disposed in the opening. The first end face is disposed inside the mounting cavity and away from the opening. The area of ​​the first end face is smaller than the area of ​​the second end face. The side face is a curved surface that gradually expands from the first end face to the second end face. A scattering cavity is defined between the side face and the inner wall of the mounting cavity. A light source is disposed in the mounting cavity and opposite to the first end face; the light source is electrically connected to the control circuit; and A photosensitive element is disposed within the scattering cavity. The photosensitive element is spaced apart from the light source and offset from the first end face. The photosensitive element is configured to detect light rays that pass sequentially from outside the housing through the second end face and the side face and generate a light detection signal. The control circuit is configured as follows: Control the light source to emit an indicator light; The occlusion state of the window is determined based on the light detection signal, and the occlusion state of the window includes an occluded state and an unoccluded state; and The working state of the smart glasses is controlled according to the occlusion state of the viewing window.

2. The smart glasses according to claim 1, characterized in that, The second end face has a scattering film and / or the first end face is provided with an anti-reflection film.

3. The smart glasses according to claim 1, characterized in that, The generatrix of the side is a straight line segment, a curved segment, or a combination of a straight line segment and a curved segment.

4. The smart glasses according to claim 1, characterized in that, The generatrix of the side is a straight line, and the generatrix of the side has a first angle with the axis, the first angle satisfying the following formula: Wherein, θ is the first included angle, A is the divergence angle of the light source, and n is the refractive index of the material of the light guide.

5. The smart glasses according to claim 4, characterized in that, The optical axis of the light source is coaxial with the axis, and the divergence angle of the light source is less than or equal to 120°.

6. The smart glasses according to claim 1, characterized in that, The control circuit is also configured to: When the light source is off, a reference light intensity value is determined based on the light detection signal; The control of the light source to emit indicator light includes: Controlling the light source to emit light during the first time period; and The light source is turned off during the second time period; Determining the occlusion state of the window based on the light detection signal includes: The occlusion state of the window is determined based on the off light intensity value and the reference light intensity value, wherein the off light intensity value is the light intensity value of the light detection signal corresponding to the second time period; The step of determining the occlusion state of the window based on the off light intensity value and the reference light intensity value includes: When the difference between the reference light intensity value and the off light intensity value is less than a first threshold and greater than a second threshold, the occlusion state of the window is determined to be the unoccluded state. When the light intensity value is zero, the occlusion state of the window is determined to be the occluded state; and When the difference between the reference light intensity value and the off light intensity value is greater than a third threshold, the occlusion state of the window is determined to be the unoccluded state, wherein the third threshold is greater than the first threshold.

7. The smart glasses according to claim 6, characterized in that, The step of determining the occlusion state of the window based on the light detection signal further includes: The occlusion state of the window is determined based on the on-light intensity value and the reference light intensity value, wherein the on-light intensity value is the light intensity value of the light detection signal corresponding to the first time period; Determining the occlusion state of the window based on the light intensity value and the reference light intensity value includes: When the difference between the intensity value of the light source and the intensity value of the reference light source is greater than the fourth threshold, the window is determined to be in an obstructed state. The control circuit is configured to control the light source to turn off during the second time period when the difference between the intensity value of the activated light and the intensity value of the reference light is less than or equal to a fourth threshold.

8. The smart glasses according to claim 1, characterized in that, The smart glasses also include: A shooting component is disposed on the main body of the glasses and electrically connected to the control circuit; The control of the light source to emit indicator light includes: When the shooting component is activated, the light source is controlled to emit an indicator light in a shooting prompt mode; The step of controlling the working state of the smart glasses according to the occlusion state of the viewing window includes: The operating state of the shooting component is controlled according to the occlusion state of the viewport.

9. The smart glasses according to claim 8, characterized in that, The step of controlling the working state of the shooting component based on the occlusion state of the viewport includes: When the window is in an obstructed state, the shooting component is powered off. The control circuit is also configured to: When the shooting component is powered off, the light source is controlled to exit the shooting prompt mode.

10. The smart glasses according to claim 1, characterized in that, The smart glasses also include: A display component is disposed on the main body of the glasses and electrically connected to the control circuit; The control circuit is also configured to: When the light source is turned off, the ambient light intensity state is determined based on the light detection signal; When the display component is in display mode, the display brightness of the display component is adjusted according to the ambient light intensity; and When the indicator light is emitted by the light source, the adjustment of the display brightness of the display component is stopped.

11. An occlusion detection component, characterized in that, include: A housing having a mounting cavity, the housing having an opening communicating with the outside and the mounting cavity; A light guide is disposed in the mounting cavity. The light guide has a first end face, a second end face, and a side face. The first end face and the second end face are disposed opposite each other along an axis. The side face connects the first end face and the second end face. The second end face is disposed in the opening. The first end face is disposed inside the mounting cavity and away from the opening. The area of ​​the first end face is smaller than the area of ​​the second end face. The side face is a curved surface that gradually expands from the first end face to the second end face. A scattering cavity is defined between the side face and the inner wall of the mounting cavity. A light source is disposed in the mounting cavity and is positioned opposite to the first end face; A photosensitive element is disposed within the scattering cavity. The photosensitive element is spaced apart from the light source and offset from the first end face. The photosensitive element is configured to detect light rays that pass sequentially from outside the housing through the second end face and the side face and generate a light detection signal.

12. An electronic device, characterized in that, include: The main body of the equipment has a viewing window on its surface; The occlusion detection component as described in claim 11 is disposed on the main body of the device, and the opening is disposed on the viewing window or opposite to the viewing window; as well as A control circuit, electrically connected to the occlusion detection component, is configured to: Control the light source to emit an indicator light; The occlusion state of the window is determined based on the light detection signal, and the occlusion state of the window includes an occluded state and an unoccluded state. as well as The operating state of the electronic device is controlled according to the occlusion state of the window.

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