An intelligent eyewear

Abstract

The application provides a kind of smart glasses, applied to the field of smart wear technology.The smart glasses provided by the application include: frame, first lens, second lens and projection light source.The frame is used to support the first lens, the second lens and the projection light source.The projection light source is used to project the first projection and the second projection to the projection medium in time, and the projection medium is used to reflect the light of the first projection and the second projection.The first lens is used to make the light of the first projection reflected by the projection medium pass through, and filter out the light of the second projection.The second lens is used to make the light of the second projection reflected by the projection medium pass through, and filter out the light of the first projection.The smart glasses provided by the application do not need to set up light waveguide, and the problems of high cost, poor display effect and poor stereoscopic effect caused by light waveguide do not occur.Moreover, three-dimensional display can be realized on any surface, and binocular image fusion effect is good.Therefore, the cost of the smart glasses provided by the application is low, and the three-dimensional display effect is good.

Description

Technical Field

[0001] This application relates to the field of smart wearable technology, and more particularly to a smart pair of glasses. Background Technology

[0002] With the rapid development of display technology, smart wearable devices have been widely used in various fields such as gaming, sports, and movies. Smart wearable devices generally include: virtual reality (VR) devices, augmented reality (AR) devices, and mixed reality (MR) devices.

[0003] In existing technologies, AR glasses typically include an optical engine and an optical waveguide. The optical engine is located at the temple of the AR glasses, and the optical waveguide is located at the lens of the AR glasses. The left and right eye images emitted from the optical engine are directed to the optical waveguide, and after pupil dilation by the optical waveguide, they are directed to the wearer's left and right eyes respectively. The wearer's left and right eyes receive the parallax image, which is then processed by the brain to form a virtual three-dimensional (3D) image. However, using optical waveguides to achieve 3D display has the following disadvantages: (1) Optical waveguides are generally diffraction waveguides, which are expensive; (2) Optical waveguides can cause problems with display effects such as uneven color brightness, rainbow patterns, light leakage, and screen-door effect; (3) Optical waveguides can cause problems such as binocular image fusion and virtual-real conflict in AR glasses, resulting in poor stereoscopic effect of the 3D image. Summary of the Invention

[0004] This application provides a smart glasses solution that reduces the cost of smart glasses and improves the 3D display effect of smart glasses.

[0005] The smart glasses provided in this application embodiment may include: a frame, a first lens, a second lens, and a projection light source. The frame supports the first lens, the second lens, and the projection light source. The projection light source projects a first projection and a second projection onto a projection medium in a time-division multiplexing manner. The projection medium reflects the light from the first and second projections. The first lens allows the light from the first projection reflected by the projection medium to pass through, while filtering out the light from the second projection. The second lens allows the light from the second projection reflected by the projection medium to pass through, while filtering out the light from the first projection.

[0006] In the use of the smart glasses provided in this application embodiment, a projection light source projects a first projection and a second projection in front of the wearer in a time-division manner. The light from the first and second projections is reflected by the projection medium after hitting it. The light from the first and second projections reflected by the projection medium then hits the smart glasses. The light from the first projection passes through the first lens and hits one of the wearer's eyes, while the light from the second projection passes through the second lens and hits the other eye. After the wearer's eyes receive the first and second projections with parallax, the brain fuses them to form a three-dimensional image. In specific implementations, the projection medium can be the wearer's palm, arm, clothing, etc., or it can be any reflective object such as a table, wall, or book in front of the wearer. During use, the wearer can choose the appropriate projection medium based on the actual situation.

[0007] In this embodiment, the smart glasses include a first lens, a second lens, and a projection light source. The projection light source can project a first projection and a second projection onto a projection medium in a time-division manner. After the light from the first and second projections is reflected by the projection medium, the first and second lenses can separate the light from the first and second projections, allowing the wearer's eyes to receive the first and second projections respectively. After processing by the brain, a three-dimensional image is formed. The smart glasses provided in this embodiment do not require an optical waveguide to achieve three-dimensional stereoscopic display, avoiding the problems of high cost, poor display effect, and poor stereoscopic effect associated with optical waveguides. Furthermore, in this embodiment, any reflective object can be used as the projection medium, enabling three-dimensional display on any surface, resulting in better binocular fusion of the smart glasses and thus improving the three-dimensional display effect. Therefore, the smart glasses provided in this embodiment have a lower cost and a better three-dimensional display effect.

[0008] In addition to displaying three-dimensional images, the smart glasses in this embodiment can also interact with the wearer in space. For example, the wearer can interact with the smart glasses in various ways such as gestures and voice. The spatial interaction of the smart glasses is convenient and the interaction forms are diverse, which can improve the wearer's experience.

[0009] In some embodiments of this application, the light emitted from the projection light source can be polarized light, and corresponding polarizing films are provided in the first lens and the second lens so that the first lens and the second lens can separate the light of the first projection and the second projection.

[0010] In a specific configuration, the projection light source can be used to project first polarized light and second polarized light in a time-division manner, with the polarization states of the first polarized light and the second polarized light being different. The first polarized light carries information from the first projection, and the second polarized light carries information from the second projection. A first polarizing film is provided in the first lens to allow the first polarized light to pass through and filter out the second polarized light. A second polarizing film is provided in the second lens to allow the second polarized light to pass through and filter out the first polarized light. In this embodiment, the projection light source projects first polarized light and second polarized light in a time-division manner, and polarizing films are respectively provided in the first and second lenses. Utilizing the polarization properties of polarized light, the first polarized light and the second polarized light are separated, allowing the wearer's eyes to receive light from the first projection and the second projection respectively, thereby achieving a three-dimensional stereoscopic display.

[0011] In one possible implementation, the first polarized light and the second polarized light can be linearly polarized light, and the polarization direction of the first polarized light can be perpendicular to the polarization direction of the second polarized light. The first polarizing film and the second polarizing film can be linearly polarized films, and the transmission direction of the first polarizing film can be perpendicular to the transmission direction of the second polarizing film.

[0012] In another possible implementation, the first and second polarized light can also be other types of polarized light. For example, the first and second polarized light can also be circularly polarized light. The polarizing films in the first and second lenses can include linear polarizing films and phase retardation films. The transmission direction of the linear polarizing film and the retardation amount of the phase retardation film can be reasonably set so that the first and second lenses can separate the first and second polarized light.

[0013] In this embodiment, the structure of the smart glasses is described using linearly polarized light and circularly polarized light as examples of the first polarized light and the second polarized light. In actual implementation, when the first polarized light and the second polarized light are other types of polarized light, corresponding polarizing films can be set in the first lens and the second lens according to the actual situation. Examples will not be given here.

[0014] In some other embodiments of this application, the light emitted from the projection light source can be polarized light, and polarization conversion elements are provided in the first lens and the second lens so that the first lens and the second lens can separate the light of the first projection and the second projection.

[0015] In a specific configuration, the first lens may contain a first polarization conversion element, which can be used to change its state under the control of an electrical signal. The second lens may contain a second polarization conversion element, which can also be used to change its state under the control of an electrical signal. In this embodiment, by setting polarization conversion elements in the first and second lenses, the state of the polarization conversion elements can be controlled by an electrical signal. This configuration allows for the reasonable control of the states of the first and second polarization conversion elements based on the polarization state of the light emitted from the projection light source, enabling the first and second lenses to separate the light from the first and second projections. This allows the wearer's eyes to receive the light from the first and second projections respectively, achieving a three-dimensional stereoscopic display.

[0016] In practical implementation, both the first and second polarization conversion elements can be liquid crystal polarization switches. During operation, an electrical signal can be applied to the liquid crystal polarization switch to control the deflection of liquid crystal molecules, thereby controlling the light transmission state of the liquid crystal polarization switch. Of course, the first and second polarization conversion elements can also be other elements with polarization conversion functions; this is not limited here.

[0017] In one possible implementation, the projection light source can be used to emit first polarized light, which carries information about the first and second projections in a time-division multiplexing manner. A first polarization conversion element can be used to switch between a first state and a second state under the control of an electrical signal. The first polarization conversion element can allow the first polarized light to pass through in the first state and filter out the first polarized light in the second state. A second polarization conversion element can also be used to switch between the first state and the second state under the control of an electrical signal. The second polarization conversion element can also allow the first polarized light to pass through in the first state and filter out the first polarized light in the second state. The states of the first and second polarization conversion elements are not synchronized. In a specific implementation, the polarization direction of the first polarized light can be matched with the light transmission direction of the first polarization conversion element (or the second polarization conversion element) in the first state.

[0018] For example, at a first moment, the first polarized light carries information from the first projection, the first polarization conversion element is in a first state, and the second polarization conversion element is in a second state. The first polarized light can pass through the first polarization conversion element and be directed towards one of the wearer's eyes. At a second moment, the second polarized light carries information from the second projection, the first polarization conversion element is in the second state, and the second polarization conversion element is in the first state. The first polarized light can pass through the second polarization conversion element and be directed towards the other eye of the wearer. This process continues, enabling the information from the first and second projections to be directed towards the wearer in a time-division manner, allowing the wearer's eyes to receive light from the first and second projections with parallax, thereby achieving a three-dimensional stereoscopic display.

[0019] In this embodiment, by applying different electrical signals to the first polarization conversion element and the second polarization conversion element, the states of the first polarization conversion element and the second polarization conversion element can be desynchronized. With this setting, the projection light source can continuously project the first polarized light with an unchanged polarization state, making the structure of the projection light source simpler and the operation of the smart glasses easier.

[0020] In another possible implementation, the projection light source can be specifically used to project first polarized light and second polarized light in a time-division manner, with the polarization states of the first polarized light and the second polarized light being different. The first polarized light carries information from the first projection, and the second polarized light carries information from the second projection. A first polarization conversion element can be used, under the control of an electrical signal, to allow the first polarized light to pass through and filter out the second polarized light. A second polarization conversion element can be used, under the control of an electrical signal, to allow the second polarized light to pass through and filter out the first polarized light. This configuration allows the first and second polarization conversion elements to be equivalent to polarizing films with different polarization states, and also allows the first and second projections to be separated and directed towards the wearer's left and right eyes respectively, achieving a three-dimensional stereoscopic display. For example, when the first and second polarized light are linearly polarized light, the first and second polarization conversion elements can be equivalent to linearly polarized films. In specific implementation, when the first polarization conversion element and the second polarization conversion element are liquid crystal polarization switches, the initial deflection directions of the liquid crystal molecules in the first polarization conversion element and the second polarization conversion element can be different. In this way, when both the first polarization conversion element and the second polarization conversion element are in the open state, their light transmission directions can be different, thereby achieving the separation of the first polarized light and the second polarized light.

[0021] In this embodiment, the eyeglass frame may include a frame, a first temple, and a second temple, which are respectively connected to the frame. The frame can be used to fix a first lens and a second lens, and the first and second lenses can be arranged side by side along a first direction. The first temple and the second temple can be located on opposite sides of the first and second lenses along the first direction. The frame may have two openings, and the first and second lenses are respectively fixed in the openings of the frame, that is, the frame completely surrounds the first and second lenses. Of course, in some cases, the frame may also partially surround the first and second lenses, which is not limited here. In specific settings, the first and second lenses can be set separately, that is, the smart glasses may have two lenses. Alternatively, the first and second lenses may be integrated into the same lens, that is, the smart glasses may have one lens, and the first and second lenses may be located in different areas of the lens.

[0022] In one possible implementation, the projection light source can be positioned on the frame, at the edge of either the first or second lens. During use of the smart glasses, the projection light source can project light forward onto the wearer without being obstructed by the frame. The projection light source can be positioned at the edge of the first lens, near the first temple; alternatively, it can be positioned at the edge of the second lens; or it can be positioned between the first and second lenses. The specific placement of the projection light source can be determined according to actual needs.

[0023] In specific configurations, the projection light source can include: a laser beam scanning (LBS) projector, a micro light emitting diode (microled) projector, or a liquid crystal on silicon (LCoS) projector. Alternatively, the projection light source can also include other types of projection devices; this is not limited here. The projection light source can include a variable-focus projection device, thereby adjusting the focal length of the emitted light and improving the display effect of the smart glasses. Furthermore, the projection light source can include a projection device with a high refresh rate; for example, the refresh rate of the projection light source can be greater than or equal to 120Hz, allowing for a higher frequency of time-division multiplexing of the first and second projections, thus improving the three-dimensional stereoscopic effect of the smart glasses.

[0024] In one possible implementation, the smart glasses may also include a depth sensing element fixed to the frame. The depth sensing element detects the distance between the smart glasses and the projection medium and sends the detected distance information to a projection light source. The projection light source can then adjust its focus based on the distance information. This allows the light projected by the projection light source to automatically focus on the surface of the projection medium, improving the display effect of the smart glasses. Furthermore, the adjustable fusion distance of the 3D display reduces the conflict between real and virtual images, thereby enhancing the 3D stereoscopic effect of the smart glasses.

[0025] In one possible implementation, the depth sensing element can be mounted on the frame, positioned between the first and second lenses. During use of the smart glasses, the depth sensing element emits a detection signal forward without obstruction by the frame. Furthermore, its placement near the center of the front of the smart glasses ensures accurate detection and improves the 3D stereoscopic effect. Specifically, the depth sensing element can include a direct time-of-flight (DTFO) camera or an indirect time-of-flight (ITFO) camera, or other types of depth sensing devices; no limitation is made here.

[0026] In one possible implementation, the smart glasses in this embodiment may further include an image acquisition element, which can be fixed to the frame and used to acquire image information of the external environment. Exemplarily, the image acquisition element can be fixed to the frame, i.e., the image acquisition element can be placed in front of the smart glasses. During use, the image acquisition element can acquire images in front of the wearer. In specific settings, the image acquisition element can be various types of cameras. In some cases, the image acquisition element can be used to acquire images in front of the wearer, facilitating the capture of first-person perspective images or videos. In other cases, the images acquired by the image acquisition element can be integrated into the display screen of a projection light source to achieve augmented reality (AR) effects.

[0027] The smart glasses in the embodiments of this application have been described in detail above with reference to the accompanying drawings. In specific implementation, the shape, size, position, etc. of each component in the smart glasses can be reasonably set according to actual needs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram illustrating the use scenario of the smart glasses provided in the embodiments of this application;

[0029] Figure 2 A schematic diagram illustrating the display principle of the smart glasses provided in this application embodiment;

[0030] Figure 3 This is a schematic diagram of the structure of the smart glasses in the embodiments of this application;

[0031] Figure 4 This is another structural schematic diagram of the smart glasses in this application embodiment;

[0032] Figure 5This is another structural schematic diagram of the smart glasses in this application embodiment;

[0033] Figure 6 This is another structural schematic diagram of the smart glasses in this application embodiment;

[0034] Figure 7 This is another structural schematic diagram of the smart glasses in an embodiment of this application.

[0035] Figure label:

[0036] 10-Smart glasses; 100-Frame; 100a-Frame; 100b-First temple; 100c-Second temple; 101-First lens; 102-Second lens; 103-Projection light source; 104-Depth detection element; 105-Image acquisition element; 20-Projection medium; 30-Three-dimensional image; W1-First polarizing film; W2-Second polarizing film; Q1-First polarization conversion element; Q2-Second polarization conversion element; F1-First direction. Detailed Implementation

[0037] This application provides a smart glasses solution to reduce the cost of smart glasses and improve their 3D display effect. The smart glasses provided in this application can be applied to various scenarios such as entertainment and gaming, product display, and immersive learning. To make the objectives, technical solutions, and advantages of this application clearer, the smart glasses provided in this application will be described in detail below with reference to the accompanying drawings.

[0038] It should be noted that the accompanying drawings in this application are for illustrative purposes only and do not represent actual scale. The same reference numerals in the accompanying drawings denote the same or similar structures, and therefore, repeated descriptions of them will be omitted.

[0039] The terms describing position and direction used in this application, such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," are merely illustrative examples based on the orientation or positional relationships shown in the accompanying drawings. They are intended solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Changes may be made as needed, and all such changes are included within the scope of protection of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Figure 1 This is a schematic diagram illustrating a usage scenario of the smart glasses provided in an embodiment of this application. Figure 2 This is a schematic diagram illustrating the display principle of the smart glasses provided in the embodiments of this application, as shown below. Figure 1 and Figure 2 As shown, the smart glasses 10 provided in this embodiment may include: a frame 100, a first lens 101, a second lens 102, and a projection light source 103. The frame 100 can support the first lens 101, the second lens 102, and the projection light source 103. The projection light source 103 can project a first projection and a second projection onto a projection medium 20 in a time-division manner, and the projection medium 20 can reflect the light from the first and second projections. The light from the first projection is as follows... Figure 2 As shown by the solid arrow in the middle, the light rays of the second projection are as follows: Figure 2 As indicated by the hollow arrow. The first lens 101 can be used to allow light from the first projection reflected by the projection medium 20 to pass through, and to filter out light from the second projection. The second lens 102 can be used to allow light from the second projection reflected by the projection medium 20 to pass through, and to filter out light from the first projection.

[0041] Continue to refer to Figure 1 and Figure 2 In the use of the smart glasses 10 provided in this application embodiment, the projection light source 103 projects a first projection and a second projection in a time-division manner towards the wearer's front. The light from the first and second projections is reflected by the projection medium 20 after hitting it. The light from the first and second projections reflected by the projection medium 20 then hits the smart glasses 10. The light from the first projection passes through the first lens 101 and hits one of the wearer's eyes, while the light from the second projection passes through the second lens 102 and hits the other eye of the wearer. For example... Figure 2 The illustration uses an example where the first projection is directed towards the wearer's right eye and the second projection towards the wearer's left eye. After the wearer's eyes receive the first and second projections with parallax, the brain fuses them to form a three-dimensional image 30. In practice, the projection medium 20 can be the wearer's palm, arm, clothing, etc., or it can be any reflective object such as a table, wall, or book in front of the wearer. During use, the wearer can choose the appropriate projection medium 20 according to the actual situation.

[0042] In this embodiment, the smart glasses 10 includes a first lens 101, a second lens 102, and a projection light source 103. The projection light source 103 can project a first projection and a second projection onto the projection medium 20 in a time-division manner. After the light from the first and second projections is reflected by the projection medium 20, the first lens 101 and the second lens 102 can separate the light from the first and second projections, allowing the wearer's eyes to receive the first and second projections respectively. After processing by the brain, a three-dimensional image 30 is formed. The smart glasses 10 provided in this embodiment does not require an optical waveguide to achieve three-dimensional stereoscopic display, avoiding the problems of high cost, poor display effect, and poor stereoscopic effect caused by optical waveguides. Furthermore, in this embodiment, any reflective object can be used as the projection medium 20, enabling three-dimensional display on any surface, resulting in better binocular fusion of the smart glasses 10 and thus improving the three-dimensional display effect of the smart glasses 10. Therefore, the smart glasses 10 provided in this embodiment has a lower cost and a better three-dimensional display effect.

[0043] Reference Figure 1 In addition to displaying three-dimensional images 30, the smart glasses 10 in this embodiment can also interact with the wearer in space. For example, the wearer can interact with the smart glasses 10 in various ways such as gestures and voice. The spatial interaction of the smart glasses 10 is convenient and the interaction forms are diverse, which can improve the wearer's experience.

[0044] Figure 3 This is a schematic diagram of the structure of the smart glasses in the embodiments of this application, such as... Figure 3 As shown, in some embodiments of this application, the light emitted from the projection light source 103 can be polarized light, and corresponding polarizing films are provided in the first lens 101 and the second lens 102 so that the first lens 101 and the second lens 102 can separate the light of the first projection and the second projection.

[0045] In a specific configuration, the projection light source 103 can be used to project first polarized light and second polarized light in a time-division manner, with the polarization states of the first polarized light and the second polarized light being different. The first polarized light carries information from the first projection, and the second polarized light carries information from the second projection. A first polarizing film W1 is provided in the first lens 101, which allows the first polarized light to pass through and filters out the second polarized light. A second polarizing film W2 is provided in the second lens 102, which allows the second polarized light to pass through and filters out the first polarized light. In this embodiment, the projection light source 103 projects the first and second polarized light in a time-division manner, and polarizing films are respectively provided in the first lens 101 and the second lens 102. Utilizing the polarization properties of polarized light, the first and second polarized light are separated, allowing the wearer's eyes to receive light from the first and second projections respectively, thereby achieving a three-dimensional stereoscopic display.

[0046] Continue to refer to Figure 3 In one possible implementation, the first polarized light and the second polarized light can be linearly polarized light. The polarization direction of the first polarized light can be perpendicular to the polarization direction of the second polarized light. For example, the polarization direction of the first polarized light can be vertical, and the polarization direction of the second polarized light can be horizontal. The first polarizing film W1 and the second polarizing film W2 can be linearly polarized films. The light transmission direction of the first polarizing film W1 can be perpendicular to the light transmission direction of the second polarizing film W2. For example, the light transmission direction of the first polarizing film W1 can be vertical, and the light transmission direction of the second polarizing film W2 can be horizontal.

[0047] In another possible implementation, the first and second polarized light can also be other types of polarized light. For example, the first and second polarized light can also be circularly polarized light. The polarizing films in the first lens 101 and the second lens 102 can include a linear polarizing film and a phase retardation film. The transmission direction of the linear polarizing film and the retardation amount of the phase retardation film can be reasonably set so that the first lens 101 and the second lens 102 can separate the first polarized light and the second polarized light.

[0048] In this embodiment, the structure of the smart glasses 10 is described using linearly polarized light and circularly polarized light as examples of the first polarized light and the second polarized light. In specific implementations, when the first polarized light and the second polarized light are other types of polarized light, corresponding polarizing films can be set in the first lens 101 and the second lens 102 according to the actual situation. Examples will not be given here.

[0049] Figure 4 This is another structural schematic diagram of the smart glasses in an embodiment of this application, such as... Figure 4As shown, in some other embodiments of this application, the light emitted from the projection light source 103 can be polarized light, and polarization conversion elements are provided in the first lens 101 and the second lens 102 so that the first lens 101 and the second lens 102 can separate the light of the first projection and the second projection.

[0050] In a specific configuration, the first lens 101 may be equipped with a first polarization conversion element Q1, which can be used to change its state under the control of an electrical signal. The second lens 102 may be equipped with a second polarization conversion element Q2, which can also be used to change its state under the control of an electrical signal. In this embodiment, by setting polarization conversion elements in the first lens 101 and the second lens 102, the state of the polarization conversion elements can be controlled by an electrical signal. This configuration allows for the reasonable control of the states of the first polarization conversion element Q1 and the second polarization conversion element Q2 based on the polarization state of the light emitted from the projection light source 103. This enables the first lens 101 and the second lens 102 to separate the light from the first projection and the second projection, thereby allowing the wearer's eyes to receive the light from the first projection and the second projection respectively, achieving a three-dimensional stereoscopic display.

[0051] In practical implementation, both the first polarization conversion element Q1 and the second polarization conversion element Q2 can be liquid crystal polarization switches. During operation, an electrical signal can be applied to the liquid crystal polarization switches to control the deflection of liquid crystal molecules, thereby controlling the light transmission state of the liquid crystal polarization switches. Of course, the first polarization conversion element Q1 and the second polarization conversion element Q2 can also be other elements with polarization conversion functions; this is not limited here.

[0052] In one possible implementation, continue to refer to Figure 4The projection light source 103 can be used to emit first polarized light, which is used to carry information about the first projection and the second projection in a time-division multiplexing manner. A first polarization conversion element Q1 can be used to switch between a first state and a second state under the control of an electrical signal. In the first state, the first polarization conversion element Q1 allows the first polarized light to pass through, and in the second state, it filters out the first polarized light. A second polarization conversion element Q2 can also be used to switch between the first state and the second state under the control of an electrical signal. In the first state, the second polarization conversion element Q2 allows the first polarized light to pass through, and in the second state, it filters out the first polarized light. The states of the first polarization conversion element Q1 and the second polarization conversion element Q2 are not synchronized. In a specific implementation, the polarization direction of the first polarized light can be matched with the light transmission direction of the first polarization conversion element Q1 (or the second polarization conversion element Q2) in the first state. For example, the polarization direction of the first polarized light can be vertical, the light transmission direction of the first polarization conversion element Q1 (or the second polarization conversion element Q2) in the first state can be vertical, and the light transmission direction in the second state can be horizontal.

[0053] For example, at a first moment, the first polarized light carries information from the first projection, the first polarization conversion element Q1 is in a first state, and the second polarization conversion element Q2 is in a second state. The first polarized light can pass through the first polarization conversion element Q1 and be directed towards one of the wearer's eyes. At a second moment, the second polarized light carries information from the second projection, the first polarization conversion element Q1 is in the second state, and the second polarization conversion element Q2 is in the first state. The first polarized light can pass through the second polarization conversion element Q2 and be directed towards the wearer's other eye. This process continues, enabling the information from the first and second projections to be directed towards the wearer in a time-division manner, allowing the wearer's eyes to receive light from the first and second projections with parallax, thereby achieving a three-dimensional stereoscopic display.

[0054] In this embodiment, by applying different electrical signals to the first polarization conversion element Q1 and the second polarization conversion element Q2, the states of the first polarization conversion element Q1 and the second polarization conversion element Q2 can be made asynchronous. With this setting, the projection light source 103 can continuously project the first polarized light with an unchanged polarization state, making the structure of the projection light source 103 relatively simple and the operation of the smart glasses 10 relatively easy.

[0055] In another possible implementation, refer to Figure 5 , Figure 5This is another structural schematic diagram of the smart glasses in this application embodiment. The projection light source 103 can be specifically used to project first polarized light and second polarized light in a time-division manner, with the polarization states of the first polarized light and the second polarized light being different. The first polarized light carries information from the first projection, and the second polarized light carries information from the second projection. The first polarization conversion element Q1 can be used to allow the first polarized light to pass through and filter out the second polarized light under the control of an electrical signal. The second polarization conversion element Q2 can be used to allow the second polarized light to pass through and filter out the first polarized light under the control of an electrical signal. This configuration allows the first polarization conversion element Q1 and the second polarization conversion element Q2 to be equivalent to polarizing films with different polarization states, and also allows the first projection and the second projection to be separated and directed towards the wearer's left and right eyes respectively, achieving a three-dimensional stereoscopic display. For example, when the first polarized light and the second polarized light are linearly polarized light, the first polarization conversion element Q1 and the second polarization conversion element Q2 can be equivalent to linearly polarized films. In specific implementation, when the first polarization conversion element Q1 and the second polarization conversion element Q2 are liquid crystal polarization switches, the initial deflection directions of the liquid crystal molecules in the first polarization conversion element Q1 and the second polarization conversion element Q2 can be different. In this way, when both the first polarization conversion element Q1 and the second polarization conversion element Q2 are in the open state, their light transmission directions can be different, thereby achieving the separation of the first polarized light and the second polarized light.

[0056] Figure 6 This is another structural schematic diagram of the smart glasses in an embodiment of this application, such as... Figure 6 As shown in this embodiment, the eyeglass frame 100 may include a frame 100a, a first temple 100b, and a second temple 100c, with the first temple 100b and the second temple 100c respectively connected to the frame 100a. The frame 100a can be used to fix a first lens 101 and a second lens 102, and the first lens 101 and the second lens 102 can be arranged side by side along a first direction F1. The first temple 100b and the second temple 100c can be located on opposite sides of the first lens 101 and the second lens 102 along the first direction F1, respectively. Figure 6 In the smart glasses 10 shown, the frame 100a has two openings. The first lens 101 and the second lens 102 are respectively fixed in the openings in the frame 100a, that is, the frame 100a completely surrounds the first lens 101 and the second lens 102. Of course, in some cases, the frame 100a may also partially surround the first lens 101 and the second lens 102, which is not limited here. In specific settings, the first lens 101 and the second lens 102 can be set separately, that is, the smart glasses 10 can have two lenses. Alternatively, the first lens 101 and the second lens 102 can also be integrated into the same lens, that is, the smart glasses 10 can have one lens, and the first lens 101 and the second lens 102 can be set in different areas of the lens.

[0057] In one possible implementation, continue to refer to Figure 6 The projection light source 103 can be mounted on the frame 100a, and the projection light source 103 is located at the edge of the first lens 101 or the second lens 102. Figure 6 As shown in the view, the projection light source 103 is located on the front of the smart glasses 10. During the use of the smart glasses 10, the projection light source 103 can project light in front of the wearer without being blocked by the frame 100. Figure 6 Taking the projection light source 103 located at the edge of the first lens 101, near the first temple 100b, as an example, in specific settings, the projection light source 103 can also be located at other positions on the frame 100a, depending on actual needs. For example, the projection light source 103 can be located at the edge of the second lens 102, or it can be located between the first lens 101 and the second lens 102.

[0058] In specific configurations, the projection light source 103 may include a laser beam scanning (LBS) projector, a micro light emitting diode (microled) projector, or a liquid crystal on silicon (LCoS) projector. Alternatively, the projection light source 103 may include other types of projection devices, which are not limited here. The projection light source 103 may include a variable-focus projection device, thereby adjusting the focal length of the light emitted by the projection light source 103 and improving the display effect of the smart glasses 10. In addition, the projection light source 103 may include a projection device with a high refresh rate. For example, the refresh rate of the projection light source 103 may be greater than or equal to 120Hz, so that the projection light source 103 projects the first and second projections at a higher frequency in a time-division multiplexing manner, thereby improving the three-dimensional stereoscopic effect of the smart glasses 10.

[0059] Figure 7 This is another structural schematic diagram of the smart glasses in an embodiment of this application, such as... Figure 7 As shown, the smart glasses 10 may also include a depth detection element 104, which is fixed to the frame 100. The depth detection element 104 can be used to detect the distance D between the smart glasses 10 and the projection medium 20, and send the detected distance information to the projection light source 103. The projection light source 103 can be used to adjust the focal length according to the distance information. In this way, the light projected by the projection light source 103 can be automatically focused on the surface of the projection medium 20, improving the display effect of the smart glasses 10. Furthermore, the fusion distance of the three-dimensional display image is adjustable, which can reduce the conflict between virtual and real images, thereby improving the three-dimensional stereoscopic effect of the smart glasses 10.

[0060] In one possible implementation, the frame 100 may include a frame 100a, a first temple 100b, and a second temple 100c, with the first temple 100b and the second temple 100c respectively connected to the frame 100a. The frame 100a can be used to fix a first lens 101 and a second lens 102, and the first lens 101 and the second lens 102 can be arranged side by side along a first direction F1. The first temple 100b and the second temple 100c can be located on opposite sides of the first lens 101 and the second lens 102 along the first direction F1, respectively. A depth sensing element 104 can be disposed on the frame 100a, and the depth sensing element 104 can be disposed between the first lens 101 and the second lens 102. Figure 7 As shown in the diagram, the depth detection element 104 is positioned on the front of the smart glasses 10. During the use of the smart glasses 10, the depth detection element 104 can emit detection signals in front of the wearer without being obstructed by the frame 100. Furthermore, the depth detection element 104 is positioned near the center of the front of the smart glasses 10, which can make the detection results more accurate and improve the three-dimensional effect of the smart glasses 10.

[0061] In specific configurations, the depth detection element 104 may include a direct time-of-flight (dtof) camera or an indirect time-of-flight (itof) camera, or it may include other types of depth detection devices, which are not limited here.

[0062] In one possible implementation, such as Figure 6 and Figure 7 As shown, the smart glasses 10 in this embodiment may further include an image acquisition element 105, which can be fixed to the frame 100. The image acquisition element 105 can be used to acquire image information of the external environment. For example, the image acquisition element 105 can be fixed to the frame 100a, that is, the image acquisition element 105 can be placed on the front of the smart glasses 10. During the use of the smart glasses 10, the image acquisition element 105 can acquire images in front of the wearer. In specific settings, the image acquisition element 105 can be various types of cameras. In some cases, the image acquisition element 105 can be used to acquire images in front of the wearer, facilitating the capture of pictures or videos from the wearer's first-person perspective. In other cases, the images acquired by the image acquisition element 105 can be integrated into the display screen of the projection light source 103 to achieve augmented reality (AR) effects.

[0063] The smart glasses 10 in this application embodiment has been described in detail above with reference to the accompanying drawings. In specific implementation, the shape, size, position, etc. of each component in the smart glasses 10 can be reasonably set according to actual needs.

[0064] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0065] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A smart glass, characterized by, include: Eyeglass frame, first lens, second lens, and projection light source; The frame is used to support the first lens, the second lens, and the projection light source; The projection light source is used to project the first projection and the second projection onto the projection medium in a time-division manner; the projection medium is used to reflect the light from the first projection and the second projection. The first lens is used to allow light from the first projection reflected by the projection medium to pass through, and to filter out light from the second projection. The second lens is used to allow light from the second projection reflected by the projection medium to pass through, and to filter out light from the first projection.

2. The smart glasses of claim 1, wherein, The projection light source is specifically used to project first polarized light and second polarized light in a time-division manner. The polarization state of the first polarized light is different from that of the second polarized light. The first polarized light is used to carry information of the first projection, and the second polarized light is used to carry information of the second projection. The first lens is provided with a first polarizing film, which is used to allow the first polarized light to pass through and filter out the second polarized light; The second lens is provided with a second polarizing film, which is used to allow the second polarized light to pass through and filter out the first polarized light.

3. The smart glasses of claim 2, wherein, The first polarized light and the second polarized light are linearly polarized light; the polarization direction of the first polarized light is perpendicular to the polarization direction of the second polarized light. The first polarizing film and the second polarizing film are linear polarizing films; the light transmission direction of the first polarizing film is perpendicular to the light transmission direction of the second polarizing film.

4. The smart glasses of claim 1, wherein, The first lens is provided with a first polarization conversion element, which is used to change its state under the control of an electrical signal; The second lens is provided with a second polarization conversion element, which is used to change its state under the control of an electrical signal.

5. The smart glasses of claim 4, wherein, The projection light source is used to emit first polarized light, and the first polarized light is used to carry information of the first projection and the second projection in a time-division manner. The first polarization conversion element is used to switch between a first state and a second state under the control of an electrical signal; the first polarization conversion element is used to allow the first polarized light to pass through in the first state and to filter out the first polarized light in the second state; The second polarization conversion element is used to switch between a first state and a second state under the control of an electrical signal; the second polarization conversion element is used to allow the first polarized light to pass through in the first state and to filter out the first polarized light in the second state; The first polarization conversion element and the second polarization conversion element are out of sync.

6. The smart glasses of claim 4, wherein, The projection light source is specifically used to project first polarized light and second polarized light in a time-division manner. The polarization state of the first polarized light is different from that of the second polarized light. The first polarized light is used to carry information of the first projection, and the second polarized light is used to carry information of the second projection. The first polarization conversion element is used to allow the first polarized light to pass through under the control of an electrical signal, and to filter out the second polarized light; The second polarization conversion element is used to allow the second polarized light to pass through under the control of an electrical signal, and to filter out the first polarized light.

7. The smart glasses according to any of claims 4 to 6, characterized in that, The first polarization conversion element is a liquid crystal polarization switch, and the second polarization conversion element is a liquid crystal polarization switch.

8. The smart glasses according to any one of claims 1 to 7, characterized in that, The eyeglass frame includes a frame, a first temple, and a second temple; the first temple and the second temple are respectively connected to the frame. The frame is used to fix the first lens and the second lens, and the first lens and the second lens are arranged side by side along the first direction; the first temple and the second temple are respectively located on both sides of the first lens and the second lens along the first direction; The projection light source is disposed on the frame and is located at the edge of the first lens or the second lens.

9. The smart glasses according to any one of claims 1 to 8, characterized in that, The projection light source includes: a laser beam scanning projector, a micro light-emitting diode projector, or a silicon-based liquid crystal projector.

10. The smart glasses according to any one of claims 1 to 9, characterized in that, The smart glasses also include a depth detection element; the depth detection element is fixed to the frame.

11. The smart glasses of claim 10, wherein, The eyeglass frame includes a frame, a first temple, and a second temple; the first temple and the second temple are respectively connected to the frame. The frame is used to fix the first lens and the second lens, and the first lens and the second lens are arranged side by side along the first direction; the first temple and the second temple are respectively located on both sides of the first lens and the second lens along the first direction; The depth sensing element is disposed on the lens frame and is located between the first lens and the second lens.

12. The smart glasses of claim 10 or 11, wherein, The depth detection element includes a direct time-of-flight camera or an indirect time-of-flight camera.

13. The smart glasses as described in any one of claims 1 to 12, characterized in that, The smart glasses also include: an image acquisition element; The image acquisition element is fixed on the frame, and the image acquisition device is used to acquire image information of the external environment.

Images