Augmented reality glasses

Abstract

The invention provides augmented reality glasses, and relates to the technical field of augmented reality, and the glasses comprise a glasses body, and a battery, an optical engine, a waveguide sheet and a photoelectric converter which are arranged on the glasses body. The waveguide sheet is arranged in at least one glasses frame of the glasses body; the battery is electrically connected with the light engine and the photoelectric converter respectively; wherein the battery is used for providing power for the light engine; the light engine is used for generating an image and outputting the image in a light form; the waveguide sheet is used for transmitting the diffracted first light to human eyes by adopting a diffracted optical waveguide technology; and the photoelectric converter is used for recycling the second light which is not diffracted and is transmitted from the waveguide sheet, converting the second light into electric energy and transmitting the electric energy to the battery. According to the augmented reality glasses, the photoelectric converter is arranged on the glasses body, light rays which are not diffracted and are transmitted from the waveguide sheet can be effectively recycled, wasted light energy is converted into electric energy, the electric energy is transmitted back to the battery, and therefore the endurance time of the augmented reality glasses is remarkably prolonged.

Description

Technical Field

[0001] This application relates to the field of augmented reality technology, and more particularly to augmented reality glasses. Background Technology

[0002] Augmented Reality (AR) is a technology that cleverly blends virtual information with the real world. Augmented Reality glasses, as devices that combine virtual images with the real world, can project images directly into the wearer's field of vision, providing a sensory experience that transcends reality. Currently, to achieve lightweight and portability, diffractive waveguide technology is considered one of the ideal solutions for AR glasses design. This technology utilizes the diffraction properties of gratings to efficiently transmit images generated by a light engine to the human eye. However, diffractive waveguide technology currently faces challenges such as low diffraction efficiency and low energy utilization, resulting in short battery life for AR glasses.

[0003] Therefore, there is an urgent need to provide a solution to extend the battery life of augmented reality glasses. Summary of the Invention

[0004] This application provides an augmented reality glasses solution to address the problem of short battery life in augmented reality glasses designed using diffractive waveguide technology in related technologies.

[0005] In a first aspect, this application provides augmented reality glasses, including a glasses body, and a battery, a light engine, a waveguide plate, and a photoelectric converter disposed on the glasses body; the waveguide plate is disposed in at least one frame of the glasses body; the battery is electrically connected to the light engine and the photoelectric converter respectively; wherein:

[0006] Batteries are used to power the light engine;

[0007] A light engine is used to generate images and output them as rays of light.

[0008] Waveguide sheets are used to transmit the first diffracted light rays to the human eye using diffraction waveguide technology.

[0009] A photoelectric converter is used to recover second light rays that are transmitted from a waveguide without diffraction, convert the second light rays into electrical energy, and transmit the electrical energy to a battery.

[0010] In one possible implementation, the glasses body is also provided with a control switch, which is used to control the light engine to turn on or off; the photoelectric converter is also used to receive ambient light around the augmented reality glasses when the light engine is off, and use the ambient light to charge the battery.

[0011] In one possible implementation, receiving ambient light around the augmented reality glasses includes: receiving ambient light that is diffracted when it illuminates the coupling region of the waveguide, propagates through total internal reflection after entering the waveguide, and is diffracted again in the coupling region of the waveguide before entering the photoelectric converter.

[0012] In one possible implementation, at least one of the battery, the light engine, and the photoelectric converter is two or more.

[0013] In one possible implementation, the light engine is disposed at at least one of the following locations: on at least one temple of the eyeglass body; above at least one frame of the eyeglass body; on the bridge of the eyeglass body; or on the edge of the outer shell of the eyeglass body.

[0014] In one possible implementation, the photoelectric converter is disposed in the target extension region in the light transmission direction of the optical engine, and the waveguide sheet is located between the optical engine and the photoelectric converter.

[0015] In one possible implementation, the target extended region is determined as follows: taking the optical engine as an endpoint, an extension line in the light transmission direction of the optical engine is generated as the endpoint extension line corresponding to the endpoint, the length of the endpoint extension line being less than a set length threshold; taking the endpoint as a rotation center, the endpoint extension line is rotated by a first angle in a first direction to obtain a first rotation line; and taking the endpoint as a rotation center, the endpoint extension line is rotated by a second angle in a second direction to obtain a second rotation line; based on the endpoint extension line, the first rotation line, and the second rotation line, the region corresponding to the endpoint extension line is determined as the extended region in the light transmission direction of the optical engine; a horizontal extension line of the waveguide is generated; the extended region is divided into two sub-extended regions based on the horizontal extension line; and the sub-extended region excluding the endpoint among the two sub-extended regions is determined as the target extended region.

[0016] In one possible implementation, the photoelectric converter is positioned in the light transmission direction of the light engine and is arranged in a straight line with the light engine. The waveguide is located between the light engine and the photoelectric converter, and the straight line is perpendicular to the horizontal extension line of the waveguide.

[0017] In one possible implementation, the energy recovery efficiency of the photoelectric converter for the second light beam is determined by the physical parameters of the grating in the waveguide coupling region, the wavelength and incident angle range of the second light beam, and the photoelectric conversion efficiency of the photoelectric converter.

[0018] In one possible implementation, the charging power of the photoelectric converter to charge the battery using ambient light is determined by the physical parameters of the grating in the waveguide coupling region, the area of ​​the coupling region, the radiation intensity and incident angle range of the ambient light, the diffraction efficiency, and the photoelectric conversion efficiency of the photoelectric converter.

[0019] In one possible implementation, the photoelectric converter is a photovoltaic panel device.

[0020] The augmented reality glasses provided in this application include a glasses body, and a battery, a light engine, a waveguide plate, and a photoelectric converter disposed on the glasses body. The waveguide plate is disposed in at least one frame of the glasses body. The battery is electrically connected to the light engine and the photoelectric converter. The battery provides power to the light engine; the light engine generates an image and outputs the image as light rays; the waveguide plate uses diffractive waveguide technology to transmit diffracted first light rays to the human eye; the photoelectric converter recovers second light rays that are not diffracted and are transmitted from the waveguide plate, converts the second light rays into electrical energy, and transmits the electrical energy to the battery. By placing a photoelectric converter on the glasses body of the augmented reality glasses, this application can effectively recover light rays that are not diffracted and are transmitted from the waveguide plate, converting wasted light energy into electrical energy and feeding it back to the battery. This directly alleviates the problems of low diffraction efficiency and low energy utilization in diffractive waveguide technology, thereby significantly extending the battery life of the augmented reality glasses. Furthermore, due to the extended battery life, users can use the augmented reality glasses for extended periods without frequent charging, thus improving the device's practicality and user experience. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] Figure 1 A schematic diagram of the structure of augmented reality glasses provided as an exemplary embodiment of this application;

[0023] Figure 2 A schematic diagram of two main transmission paths of light rays when an image is projected onto a waveguide sheet in the form of light rays by an optical engine provided in an exemplary embodiment of this application;

[0024] Figure 3 A schematic diagram of the diffraction pattern of light rays when an image is projected onto a waveguide sheet in the form of light rays by an optical engine provided in an exemplary embodiment of this application;

[0025] Figure 4 A schematic diagram of the T0 order diffraction intensity of a grating provided in an exemplary embodiment of this application as the incident angle varies from -15° to 15°;

[0026] Figure 5 A schematic diagram illustrating how augmented reality glasses, provided as an exemplary embodiment of this application, charge their batteries using ambient light when not in use;

[0027] Figure 6A schematic diagram illustrating the working principle of augmented reality glasses using ambient light to charge the battery when not in use, as provided in an exemplary embodiment of this application;

[0028] Figure 7 T provided for exemplary embodiments of this application -1 Schematic diagram of diffraction efficiency;

[0029] Figure 8 A schematic diagram illustrating the determination of the target expansion region based on the positional relationship between the optical engine and the waveguide sheet and the light transmission direction of the optical engine, provided as an exemplary embodiment of this application;

[0030] Figure 9 A schematic diagram illustrating the determination of a target expansion area by rounding the endpoints (non-light engine location endpoints) of the endpoint extension line, the first rotation line, and the second rotation line, as provided in an exemplary embodiment of this application.

[0031] Figure 10 This is a schematic diagram illustrating the determination of a target extension region by drawing a perpendicular line to the extension line from the other end of the endpoint extension line (which is not the endpoint where the light engine is located) as an exemplary embodiment of this application.

[0032] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0034] The terms “first,” “second,” etc., used in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, products, or apparatus.

[0035] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with relevant laws, regulations and standards, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0036] In related technologies, in the coupling region of the optical waveguide, only a small portion of the light emitted by the optical engine can enter the waveguide sheet through diffraction, while most of the light is transmitted out of the waveguide sheet. The energy carried by this transmitted light cannot be effectively utilized, resulting in low overall energy utilization. This causes the augmented reality glasses to consume more power to maintain normal image display functions, directly leading to increased power consumption of the augmented reality glasses and faster battery drain, thus greatly shortening the battery life of the augmented reality glasses. Furthermore, the short battery life also affects the practicality of the device and the user experience.

[0037] To address the aforementioned issues, this application provides an augmented reality glasses solution. By incorporating an energy-recovery photoelectric converter on the glasses' body, the energy of light transmitted from the waveguide sheet is recovered, the wasted light energy is converted into electrical energy, and fed back to the battery, thereby significantly extending the battery life of the augmented reality glasses. Furthermore, due to the extended battery life, users can use the augmented reality glasses for extended periods without frequent charging, thus improving the device's practicality and user experience.

[0038] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0039] Figure 1 A schematic diagram of the structure of augmented reality glasses provided as an exemplary embodiment of this application. Figure 1 As shown, the augmented reality glasses 10 includes a glasses body 11, and a battery 12, a light engine 13, a waveguide 14, and a photoelectric converter 15 disposed on the glasses body 11; the waveguide 14 is disposed in at least one frame of the glasses body 11; the battery 12 is electrically connected to the light engine 13 and the photoelectric converter 15 respectively; wherein:

[0040] Battery 12 is used to provide power to the light engine 13;

[0041] Light engine 13 is used to generate images and output them as rays of light;

[0042] Waveguide 14 is used to transmit the first diffracted ray to the human eye using diffraction waveguide technology;

[0043] The photoelectric converter 15 is used to recover the second light rays transmitted from the waveguide 14 without diffraction, convert the second light rays into electrical energy, and transmit the electrical energy to the battery 12.

[0044] in, Figure 1 (a) in the image is an example of a top view of augmented reality glasses. Figure 1 (b) in the diagram is an example of a master diagram for augmented reality glasses. Figure 1 As shown in (a) and (b), the eyeglass body 11 includes two temples, two frames, and a bridge connecting the two frames.

[0045] It should be noted that, Figure 1 The waveguide 14 shown can be disposed in only one frame or in two frames simultaneously; and Figure 1 The number and placement of the battery 12, light engine 13, and photoelectric converter 15 shown are merely examples, and there are no limitations on the number and placement of the battery 12, light engine 13, and photoelectric converter 15.

[0046] For example, such as Figure 1 As shown in (a), the battery 12 is integrated into the temple of the eyeglass body 11. The battery 12 can be, for example, a high-energy-density lithium-ion battery or a lithium polymer battery, to provide power to the light engine 13. The battery 12 is electrically connected to the light engine 13 and the photoelectric converter 15 via wires. The light engine 13 can be mounted on the side of the eyeglass body 11, and typically employs digital light processing (DLP), microlight-emitting diodes (MicroLED), liquid crystal on silicon (LCOS), or laser beam scanning. Using technologies such as scanning (LBS), virtual images are generated and output as light rays to waveguide 14. Waveguide 14 is embedded in the frame of the glasses body 11 and uses diffractive waveguide technology to diffract the light rays output by the light engine 13 through a grating structure, and efficiently transmits the first diffracted light rays to the wearer's retina, thereby realizing the display of virtual images. Photoelectric converter 15 is located, for example, near waveguide 14, and is used to recover the second light rays that have not been diffracted and have been transmitted out of waveguide 14.

[0047] In some embodiments, the photoelectric converter is a photovoltaic panel device.

[0048] For example, the photoelectric converter 15 is composed of a high-efficiency photovoltaic panel, which can directly convert light energy into electrical energy. The photovoltaic panel material can be a high-conversion-efficiency semiconductor material, such as monocrystalline silicon or polycrystalline silicon, to improve energy conversion efficiency. Accordingly, the photoelectric converter 15 converts the recovered light into electrical energy and transmits the electrical energy back to the battery 12, thereby achieving energy recycling.

[0049] Correspondingly, when the light engine 13 is in operation, it generates a virtual image and projects the image onto the waveguide 14 in the form of light rays. At this time, the light rays have two main transmission paths. For example, Figure 2 This diagram illustrates two main transmission paths of light rays when an image is projected onto a waveguide sheet in the form of light rays by an optical engine provided as an exemplary embodiment of this application. Figure 2 As shown, in the first transmission path, some of the light output from the light engine 13 enters the waveguide 14 through the diffraction of the coupling region 141, and then diffracts again in the coupling region 142 of the waveguide 14 to enter the human eye, enabling the wearer to see virtual images superimposed on the real world; in the second transmission path, some of the light output from the light engine 13 does not diffract in the coupling region 141, that is, light with 0th order diffraction. This type of light cannot enter the waveguide 14 because it does not meet the condition of total internal reflection, and is transmitted out from the back of the waveguide 14.

[0050] For example, Figure 3 This is a schematic diagram illustrating the diffraction pattern of light rays projected onto a waveguide sheet by an optical engine provided as an exemplary embodiment of this application. Figure 3 As shown, the diffraction patterns of light are T0 and T2. -1 and T +1 Three forms. Combined Figure 2 The light transmission path shown, T +1 Light rays of the T0 order will diffract and enter the waveguide 14, undergoing total internal reflection and entering the human eye, while light rays of the corresponding T0 order will pass through the waveguide 14 and be transmitted out. Correspondingly, still referring to... Figure 2 By using a photoelectric conversion device 15 located near the waveguide plate 14, the energy of the transmitted light from the light engine 13 is recovered and the obtained energy is transmitted to the battery 12, thereby realizing energy recovery and utilization and extending the battery life of the battery 12.

[0051] The augmented reality glasses provided in this application embodiment, by setting a photoelectric converter on the glasses body, can effectively recover light transmitted from the waveguide sheet without diffraction, convert the wasted light energy into electrical energy, and feed it back to the battery. This directly alleviates the problems of low diffraction efficiency and low energy utilization in diffractive waveguide technology, thereby significantly extending the battery life of the augmented reality glasses. In addition, due to the extended battery life, users can use the augmented reality glasses for a long time without frequent charging, thereby improving the practicality of the device and the user experience.

[0052] In some embodiments, the energy recovery efficiency of the photoelectric converter for the second light is determined by the physical parameters of the grating in the waveguide coupling region, the wavelength and incident angle range of the second light, and the photoelectric conversion efficiency of the photoelectric converter.

[0053] The physical parameters of the grating in the waveguide coupling region include, but are not limited to, refractive index, grating period, duty cycle, and grating depth. For example, taking a waveguide with a refractive index of 1.7 as an example, still referring to... Figure 2 Assuming that the coupling region 141 on waveguide 14 uses nanoimprinted adhesive with a refractive index of 1.7 as a grating, with a grating period of 380 nm, a duty cycle of 0.5, and a depth of 200 nm, for green light with a wavelength of 522 nm, the T0 order diffraction intensity of the grating as the incident angle changes from -15° to 15° is as follows: Figure 4 As shown. From Figure 4 It can be seen that the T0 level diffraction intensity accounts for about 70%-80% of the light source. Therefore, for a conventional waveguide, most of the light output from the optical engine 13 is concentrated in the T0 level and is lost. Correspondingly, for the photoelectric converter 15, assuming that the photoelectric conversion efficiency of the device is 25%, the photoelectric converter 15 can provide the optical engine 13 with an energy recovery efficiency of about 17.5%-20%.

[0054] In some embodiments, the glasses body is also provided with a control switch, which is used to control the light engine to turn on or off; the photoelectric converter is also used to receive ambient light around the augmented reality glasses when the light engine is off, and use the ambient light to charge the battery.

[0055] For example, when not in use, the energy of ambient light is used to charge the batteries of the augmented reality glasses. Figure 5 This is a schematic diagram illustrating how augmented reality glasses, provided as an exemplary embodiment of this application, charge their batteries using ambient light when not in use. Figure 5 As shown, when not in use, the augmented reality glasses are placed under ambient light, such as sunlight. The photoelectric converter receives the sunlight around the augmented reality glasses and uses the sunlight to charge the battery.

[0056] In some embodiments, receiving ambient light around the augmented reality glasses includes: receiving ambient light that is diffracted when it illuminates the coupling region of the waveguide, propagates through total internal reflection after entering the waveguide, and is diffracted again in the coupling region of the waveguide before entering the photoelectric converter.

[0057] For example, Figure 6 This is a schematic diagram illustrating the working principle of augmented reality glasses, provided as an exemplary embodiment of this application, using ambient light to charge the battery when not in use. Figure 6 As shown, when ambient light shines on the coupling region 142 of the waveguide 14 of the augmented reality glasses, the light also diffracts. After entering the waveguide 14, the diffracted light undergoes total internal reflection and diffracts again in the coupling region 141. The diffracted light will enter the photoelectric converter 15. Furthermore, the photoelectric converter 15 converts light energy into electrical energy to charge the battery 12, thereby achieving the effect of energy recovery from ambient light.

[0058] In this embodiment, when the augmented reality glasses are not in use, a waveguide sheet is used to receive and transmit data in reverse and use ambient light to charge the battery. This design makes full use of natural light sources, further improving the energy efficiency of the augmented reality glasses. This allows the device to passively replenish energy when not in use, thereby extending the overall battery life. In addition, through an efficient energy management and recovery mechanism, users do not need to charge the augmented reality glasses frequently, reducing their dependence on charging equipment and further enhancing the device's practicality and user experience.

[0059] In some embodiments, the charging power of the photoelectric converter to charge the battery using ambient light is determined by the physical parameters of the grating in the waveguide coupling region, the area of ​​the coupling region, the radiation intensity and incident angle range of the ambient light, the diffraction efficiency, and the photoelectric conversion efficiency of the photoelectric converter.

[0060] The physical parameters of the grating in the waveguide coupling region include, but are not limited to, refractive index, grating period, duty cycle, and grating depth. For example, still referring to... Figure 6 At the coupling region 142 of waveguide 14, the T of the ambient light ray -1 The diffracted light will enter waveguide 14 and propagate in the reverse direction to the coupling region 141 of waveguide 14. Assuming the coupling-out structure of coupling region 141 is a one-dimensional grating with a refractive index of 1.7, a grating period of 380 nm, and a grating depth of 60 nm, its T... -1 Order diffraction efficiency such as Figure 7 As shown. Correspondingly, assuming the standard solar radiation intensity is approximately 1000 watts per square meter (i.e., W / m²), if Figure 6The area of ​​the coupling region 142 is 30mm*20mm, and it is illuminated on both sides. Therefore, the incident power of the ambient light can be calculated to be approximately 1.2W. Figure 7 The diffraction efficiency shown indicates that the energy of the light entering waveguide 14 is approximately 35 mW, and it diffracts again at the coupling region 141. According to... Figure 7 The diffraction efficiency shown is approximately 20% for incident angles between -15° and 15°. Therefore, approximately 7mW of incident light can be obtained in the photoelectric converter 15. Based on the photoelectric conversion efficiency of the photoelectric converter 15, for example, which is 28%, it can be converted into approximately 2mW of charging power.

[0061] In some embodiments, at least one of the battery, light engine, and photoelectric converter is two or more.

[0062] For example, in one implementation, there are two or more of the following: batteries, light engines, and photoelectric converters. For instance, there are two or three batteries, etc.

[0063] In another implementation, any combination of the battery, light engine, and photoelectric converter consists of two or more components. For example, there may be two or three batteries and light engines.

[0064] In another implementation, there are two or more batteries, light engines, and photoelectric converters. For example, there are two or three batteries, light engines, and photoelectric converters.

[0065] Based on the above embodiments, in some embodiments, the light engine is disposed at at least one of the following locations: on at least one temple of the eyeglass body; above at least one frame of the eyeglass body; on the bridge of the eyeglass body; on the edge of the outer shell of the eyeglass body.

[0066] For example, in the first implementation, the light engine is located on one temple of the glasses body or Figure 1 The image shows the two temples of the glasses. Accordingly, this design utilizes the length and space of the temples to accommodate the light engine, ensuring even weight distribution of the device and providing better wearing comfort. At the same time, this placement also allows for convenient connection of the battery and other electronic components.

[0067] In the second implementation, the light engine is positioned above one or both frames of the glasses. Correspondingly, this design allows light to be directly projected onto the waveguide, reducing light loss along the transmission path and contributing to improved image quality and brightness.

[0068] In the third implementation, the light engine is positioned on the bridge of the nose of the glasses. This placement, utilizing the center of the nose bridge, helps balance the weight distribution of the glasses and provides a stable mounting point for even light distribution.

[0069] In the fourth implementation, the light engine is positioned on the edge of the outer shell of the glasses. This design utilizes edge space, reduces interference with the user's field of vision, and protects the light engine from external impacts.

[0070] It should be noted that regardless of the location of the light engine, its core function is to generate virtual images and project them onto the waveguide sheet. The waveguide sheet then transmits light to the wearer's eyes to achieve an augmented reality effect. In practical applications, the location of the light engine can be adjusted according to specific design requirements and user preferences to optimize the device's performance and comfort.

[0071] In some embodiments, the photoelectric converter is disposed in the target extension region in the light transmission direction of the optical engine, and the waveguide sheet is located between the optical engine and the photoelectric converter.

[0072] For example, based on the positional relationship between the optical engine and the waveguide plate and the optical engine's light transmission direction, the target extension area in the optical engine's light transmission direction is determined; further, the photoelectric converter is placed in the target extension area in the optical engine's light transmission direction.

[0073] Based on the above embodiments, in some embodiments, the target extended region is determined as follows: taking the optical engine as an endpoint, generating an extension line in the light transmission direction of the optical engine as the endpoint extension line corresponding to the endpoint, the length of the endpoint extension line being less than a set length threshold; taking the endpoint as a rotation center, rotating the endpoint extension line in a first direction by a first angle to obtain a first rotation line; and taking the endpoint as a rotation center, rotating the endpoint extension line in a second direction by a second angle to obtain a second rotation line; determining the region corresponding to the endpoint extension line as the extended region in the light transmission direction of the optical engine based on the endpoint extension line, the first rotation line, and the second rotation line; generating a horizontal extension line of the waveguide sheet; dividing the extended region into two sub-extended regions based on the horizontal extension line; and determining the sub-extended region excluding the endpoint among the two sub-extended regions as the target extended region.

[0074] For example, Figure 8 This is a schematic diagram illustrating the determination of the target expansion region based on the positional relationship between the optical engine and the waveguide sheet, and the light transmission direction of the optical engine, provided as an exemplary embodiment of this application. (See diagram for details.) Figure 8As shown, taking the location of the light engine as the endpoint, the extension line of the light transmission direction of the light engine is taken as the endpoint extension line. Using this endpoint as the rotation center, the endpoint extension line is rotated to the left by a first angle to obtain a first rotation line; and using this endpoint as the rotation center, the endpoint extension line is rotated to the right by a second angle to obtain a second rotation line. The first angle and the second angle can be the same, for example, both being 10 degrees, 15 degrees, or 20 degrees, or they can be different, for example, the first angle is 10 degrees and the second angle is 15 degrees. The magnitude of the first angle and the second angle is not limited here.

[0075] Accordingly, based on the endpoint extension line, the first rotation line, and the second rotation line, the region corresponding to the endpoint extension line is determined as the extended region in the light transmission direction of the optical engine; further, a horizontal extension line of the waveguide is generated; based on the horizontal extension line, the extended region is divided into two sub-extended regions, and the sub-extended region excluding the endpoint where the optical engine is located is determined as the target extended region. Optionally, the specific implementation method of the target extended region is as follows:

[0076] One implementation involves rounding the endpoints (excluding the location of the optical engine) of the endpoint extension line, the first rotation line, and the second rotation line to obtain a rounded arc. The fan-shaped region formed by the first rotation line, the arc, and the second rotation line is used as the extended region. Further, based on the horizontal extension line of the waveguide sheet, the extended region is divided into two sub-extended regions, namely sub-extended region 1 and sub-extended region 2. Correspondingly, as shown... Figure 9 As shown, the target expansion area is the sub-expansion area 2 excluding the endpoint where the light engine is located.

[0077] Another implementation involves drawing a perpendicular line from the other end of the endpoint extension line (the end point not where the optical engine is located) to the endpoint extension line. The closed region formed by the first rotation line, its extension, the perpendicular line, the extension of the second rotation line, and the second rotation line is defined as the extended region. Further, based on the horizontal extension line of the waveguide sheet, the extended region is divided into two sub-extended regions, namely sub-extended region 1 and sub-extended region 2. Correspondingly, as shown... Figure 10 As shown, the target expansion area is the sub-expansion area 2 excluding the endpoint where the light engine is located.

[0078] It should be noted that the length threshold can be set according to factors such as the optical characteristics of the light engine, the size and position of the waveguide, the overall size and design of the augmented reality glasses, the conversion efficiency and setting position of the photoelectric converter, etc. For example, the length threshold can be set to 1 cm, 2 cm, 50 mm, 20 mm or 15 mm, etc. The specific value can be adjusted according to the design requirements and application scenarios, etc., and there is no limitation here.

[0079] In some embodiments, the photoelectric converter is positioned in the light transmission direction of the light engine and is arranged in a straight line with the light engine, and the waveguide is located between the light engine and the photoelectric converter, with the straight line perpendicular to the horizontal extension line of the waveguide.

[0080] For example, refer to Figure 1 , Figure 2 or Figure 6 The light engine 13 is placed in the temple of the augmented reality glasses, the waveguide 14 is placed in the frame, and the photoelectric converter 15 is placed in the light transmission direction of the light engine 13, arranged in a straight line with the light engine 13, and the straight line is perpendicular to the horizontal extension line of the waveguide 14.

[0081] In this embodiment, by placing the photoelectric converter in the light transmission direction of the light engine and arranging it in a straight line with the light engine, the light energy that is not fully utilized by the waveguide can be effectively captured. With this layout, the photoelectric converter can maximize the reception of light energy and convert it into electrical energy, thereby improving energy recovery efficiency. In addition, the straight line arrangement and vertical layout simplify the design and manufacturing of the optical system, thereby reducing production costs and complexity.

[0082] In summary, this application has at least the following advantages:

[0083] First, by incorporating a photoelectric converter on the main body of the augmented reality glasses, light transmitted from the waveguide without diffraction can be effectively recovered, converting wasted light energy into electrical energy and feeding it back to the battery. This directly alleviates the problems of low diffraction efficiency and low energy utilization in diffractive waveguide technology, thereby significantly extending the battery life of the augmented reality glasses. In addition, due to the extended battery life, users can use the augmented reality glasses for extended periods without frequent charging, thus improving the device's practicality and user experience.

[0084] Second, by using waveguides to receive and charge the battery with ambient light when the augmented reality glasses are not in use, this design makes full use of natural light sources, further improving the energy efficiency of the augmented reality glasses. This allows the device to passively replenish energy when not in use, thereby extending the overall battery life. In addition, through efficient energy management and recovery mechanisms, users do not need to charge the augmented reality glasses frequently, reducing their dependence on charging equipment and further enhancing the device's practicality and user experience.

[0085] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0086] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An augmented reality glasses, characterized in that, The system includes an eyeglass body, and a battery, a light engine, a waveguide plate, and a photoelectric converter disposed on the eyeglass body; the waveguide plate is disposed in at least one frame of the eyeglass body; the battery is electrically connected to the light engine and the photoelectric converter respectively; wherein: The battery is used to provide power to the light engine; The light engine is used to generate images and output the images in the form of light rays; The waveguide sheet is used to transmit the first diffracted ray to the human eye using diffractive waveguide technology; The photoelectric converter is used to recover the second light rays transmitted from the waveguide without diffraction, convert the second light rays into electrical energy, and transmit the electrical energy to the battery.

2. The augmented reality glasses according to claim 1, characterized in that, The glasses body is also provided with a control switch, which is used to control the light engine to be turned on or off. The photoelectric converter is also used to receive ambient light around the augmented reality glasses when the light engine is off, and to use the ambient light to charge the battery.

3. The augmented reality glasses according to claim 2, characterized in that, Receiving ambient light around the augmented reality glasses includes: When the light is received and irradiated into the coupling region of the waveguide, it diffracts, enters the waveguide, propagates through total internal reflection, and then diffracts again in the coupling region of the waveguide before entering the ambient light of the photoelectric converter.

4. The augmented reality glasses according to claim 1 or 2, characterized in that, At least one of the battery, the light engine, and the photoelectric converter is two or more.

5. The augmented reality glasses according to claim 1 or 2, characterized in that, The light engine is located in at least one of the following positions: On at least one temple of the eyeglasses body; Above at least one frame of the eyeglasses body; On the bridge of the nose of the glasses body; On the edge of the outer shell of the glasses body.

6. The augmented reality glasses according to claim 5, characterized in that, The photoelectric converter is disposed in the target extension region in the light transmission direction of the optical engine, and the waveguide sheet is located between the optical engine and the photoelectric converter.

7. The augmented reality glasses according to claim 6, characterized in that, The target expansion region is determined in the following way: Using the optical engine as an endpoint, an extension line in the light transmission direction of the optical engine is generated as the endpoint extension line corresponding to the endpoint, and the length of the endpoint extension line is less than a set length threshold. Using the endpoint as the center of rotation, the extension line of the endpoint is rotated by a first angle in a first direction to obtain a first rotation line; and using the endpoint as the center of rotation, the extension line of the endpoint is rotated by a second angle in a second direction to obtain a second rotation line. Based on the endpoint extension line, the first rotation line, and the second rotation line, the region corresponding to the endpoint extension line is determined to be the extended region in the light transmission direction of the light engine; Generate the horizontal extension line of the waveguide sheet; The extended region is divided into two sub-extended regions based on the horizontal extension line; and the sub-extended region that does not include the endpoint among the two sub-extended regions is determined as the target extended region.

8. The augmented reality glasses according to claim 5, characterized in that, The photoelectric converter is disposed in the light transmission direction of the light engine and is arranged in a straight line with the light engine. The waveguide is located between the light engine and the photoelectric converter, and the straight line is perpendicular to the horizontal extension line of the waveguide.

9. The augmented reality glasses according to claim 1 or 2, characterized in that, The energy recovery efficiency of the photoelectric converter for the second light is determined by the physical parameters of the grating in the coupling region of the waveguide, the wavelength and incident angle range of the second light, and the photoelectric conversion efficiency of the photoelectric converter.

10. The augmented reality glasses according to claim 2, characterized in that, The charging power of the photoelectric converter for charging the battery using ambient light is determined by the physical parameters of the grating in the coupling region of the waveguide, the area of ​​the coupling region, the radiation intensity and incident angle range of the ambient light, the diffraction efficiency, and the photoelectric conversion efficiency of the photoelectric converter.

11. The augmented reality glasses according to claim 1 or 2, characterized in that, The photoelectric converter is a photovoltaic panel device.

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