Patent Application
20250076661
This application relates to the field of AR technologies, and in particular, to AR glasses and an AR glasses system.
An augmented reality (AR) technology is to superimpose a virtual object generated by a computer onto a real-world scenario, to augment the real world. In other words, in the AR technology, the real-world scenario needs to be collected, and then a virtual environment is added to the real world. The AR technology has broad application, mainly involving the medical care field, the education field, the military field, the industrial field, the entertainment and game field, and another field, and widely uses a plurality of technical means such as a multimedia means, a three-dimensional modeling means, a real-time tracking and registration means, an intelligent interaction means, and a sensing means, to simulate virtual information such as a text, an image, a three-dimensional model, music, and a video that are generated by the computer, and then apply simulated information to the real world. Two types of information complement each other, to “augment” the real world.
As a wearable electronic product, AR glasses have requirements for a small weight, wearing comfort, long standby time, and long-time use. Usually, a cell capacity is increased to increase standby time. Consequently, a weight of the glasses is increased, and comfort of a user is affected.
This application provides AR glasses and an AR glasses system, to increase standby time of the AR glasses.
This application provides AR glasses, including a frame and an eyeglass. The eyeglass is disposed on the frame. The AR glasses further include: an optical receiver/transmitter, configured to emit light, where the optical receiver/transmitter is disposed on the frame; a light propagation medium, configured to guide propagation of the light emitted by the optical receiver/transmitter; a power supply apparatus, configured to provide electric energy for the AR glasses; and a photovoltaic apparatus, configured to absorb light that does not enter the light propagation medium, and convert light energy into electric energy, where the photovoltaic apparatus is electrically connected to the power supply apparatus, and the electric energy generated by the photovoltaic apparatus is transmitted to the power supply apparatus.
In this application, the optical receiver/transmitter can emit the light towards the light propagation medium, so that the light enters the light propagation medium, and the light propagation medium guides the light to be propagated to human eyes. When the optical receiver/transmitter emits the light towards the light propagation medium, a part of the light does not enter the light propagation medium and cannot be used for display. The part of the light can irradiate the photovoltaic apparatus. The photovoltaic apparatus converts a part of light energy into electric energy. The photovoltaic apparatus is electrically connected to the power supply apparatus through a wire, to transmit the electric energy converted by the photovoltaic apparatus to the power supply apparatus, and provide the electric energy for the AR glasses. In this embodiment, the photovoltaic apparatus is disposed to recycle the light that cannot be used for display, convert the light into the electric energy, and feed back the electric energy to the AR glasses, to increase standby time of the AR glasses.
In a possible design, the optical propagation medium includes an in-coupling grating and an optical waveguide. The in-coupling grating is disposed between the optical receiver/transmitter and the optical waveguide. The in-coupling grating is configured to change a direction of light, to enable the light to enter the optical waveguide.
The photovoltaic apparatus can convert light energy that passes through the in-coupling grating and that does not enter the optical waveguide into electric energy.
In this application, the in-coupling grating can change a direction of the light emitted by the optical receiver/transmitter, so that the light can enter the optical waveguide. The optical waveguide guides the light to be propagated in the optical waveguide, and propagated to an out-coupling grating. The out-coupling grating changes a direction of the light again, to transmit the light to the human eyes. Due to a diffraction effect of the light, a part of the light directly passes through the in-coupling grating and cannot enter the optical waveguide. The part of the light can be absorbed by the photovoltaic apparatus, and the photovoltaic apparatus converts the part of the light into electric energy.
In a possible design, the photovoltaic apparatus and the in-coupling grating are disposed oppositely.
In this application, the photovoltaic apparatus is placed opposite to the in-coupling grating. The light passing through the in-coupling grating directly irradiates a surface of the photovoltaic apparatus, so that the photovoltaic apparatus absorbs the light, generates the electric energy, and reuses the wasted light. In this application, the light passing through the in-coupling grating is not reflected to the optical waveguide again, and the part of the light can be converted into the electric energy for reuse.
In a possible design, the photovoltaic apparatus includes one or more of a silicon solar cell, an organic solar cell, a perovskite solar cell, a quantum dot solar cell, a cell obtained by connecting an organic solar cell and a silicon solar cell in series, a cell obtained by connecting a perovskite solar cell and a silicon solar cell in series, and a cell obtained by connecting a quantum dot solar cell and a silicon solar cell in series.
In a possible design, the optical receiver/transmitter includes a lens and a light emitting screen. The lens can converge light emitted by the light emitting screen to the light propagation medium.
The photovoltaic apparatus can convert light energy that is not converged and emitted by the lens into electric energy.
In this application, the light emitting screen can emit the light. A plurality of lenses are disposed. The light is converged by the plurality of lenses and emitted towards a direction of the in-coupling grating. Because a part of the light cannot be collected by the lens, the part can be absorbed by the photovoltaic apparatus. The photovoltaic apparatus converts the part of the light into electric energy, to reduce a light loss of the optical receiver/transmitter.
In a possible design, the photovoltaic apparatus is disposed around a periphery of the light emitting screen and a periphery of the lens.
In this application, light emitted to an outer side of the lens or light that is refracted by the lens and extends around the lens can be absorbed by the photovoltaic apparatus.
In a possible design, the optical receiver/transmitter further includes a housing. The light emitting screen and the lens are disposed inside the housing, and the photovoltaic apparatus is disposed outside the housing.
The housing is made of a transparent material, and light can enter the photovoltaic apparatus through the housing.
In this application, the transparent material is disposed around the housing. The housing is made of a highly transparent material, so that light that is not collected by the lens can pass through the housing and can irradiate the photovoltaic apparatus. The photovoltaic apparatus absorbs a part of the light and converts the light into electric energy, to implement energy recycling.
The material of the housing may be transparent plastic.
In a possible design, the photovoltaic apparatus is a flexible solar cell.
In a possible design, the flexible solar cell includes one or more of an organic solar cell, a quantum dot solar cell, a perovskite solar cell, a cell obtained by connecting an organic solar cell and a quantum solar cell in series, a cell obtained by connecting an organic solar cell and a perovskite solar cell in series, and a cell obtained by connecting a quantum dot solar cell and a perovskite solar cell in series.
This application further provides an AR glasses system. The AR glasses system includes the foregoing AR glasses.
It should be understood that the foregoing general descriptions and the following detailed descriptions are merely examples, and are not intended to limit this application.
1—AR glasses; 11—Optical receiver/transmitter; 111—Lens; 112—Light emitting screen; 113—Housing; 12—Light propagation medium; 121—In-coupling grating; 122—Optical waveguide; 123—Out-coupling grating; 13—Photovoltaic apparatus; and 14—Wire.
The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, show embodiments conforming to this application, and are used together with the specification to explain a principle of this application.
To better understand the technical solutions of this application, the following describes embodiments of this application in detail with reference to the accompanying drawings.
The terms used in embodiments of this application are merely for the purpose of describing specific embodiments, and are not intended to limit this application. The terms “a”, “said”, and “the” of singular forms used in embodiments and the appended claims of this application are also intended to include plural forms, unless otherwise specified in the context clearly.
It should be understood that the term “and/or” used in this specification describes only an association relationship for describing associated objects and represents that three relationships may exist. For example, A and/or B may represent the following three cases: Only A exists, both A and B exist, and only B exists. In addition, the character “/” in this specification generally indicates an “or” relationship between the associated objects.
It should be noted that orientation words such as “above”, “below”, “left”, and “right” described in embodiments of this application are described from perspectives shown in the accompanying drawings, and should not be construed as a limitation on embodiments of this application. Moreover, in the context, it should be further understood that, when it is mentioned that one element is connected “above” or “below” another element, the element can be directly connected “above” or “below” the another element, or may be indirectly connected “above” or “below” the another element via an intermediate element.
Augmented reality glasses (Augmented reality Glasses) are considered as a display technology that replaces a mobile phone. A solution of a high-luminance, small-sized, and long-service-life micro LED optical receiver/transmitter and a diffractive optical waveguide combiner is an implementation of the AR glasses. When the micro LED optical receiver/transmitter and the diffractive optical waveguide combiner are used, utilization of light emitted by the micro LED is very low. First, because of a size of the optical receiver/transmitter, about 30% of the light emitted by the micro LED may be collected and emitted from the optical receiver/transmitter. The light emitted by the optical receiver/transmitter enters an optical waveguide from an in-coupling grating and is propagated to human eyes. Due to a diffraction effect of the light, more than 50% of the light passes through the in-coupling grating and cannot enter the optical waveguide. The part of the light cannot be used for display, and consequently is wasted. In addition, the part of the light may be reflected to the in-coupling grating, and enter the optical waveguide again. Consequently, interference to the light emitted from the optical receiver/transmitter is caused. To resolve a problem that the light is reflected and enters the optical waveguide again, a black thin film is usually placed at a side opposite to the in-coupling grating, so that the light that passes through the in-coupling grating and that does not enter the optical waveguide is absorbed via the black thin film. However, most of the light cannot be used for display, and consequently is wasted.
To resolve the foregoing technical problems, an embodiment provides AR glasses 1, including a frame and one or two eyeglasses. The eyeglass is disposed on the frame. As shown in
In this embodiment, the optical receiver/transmitter 11 can emit the light towards the light propagation medium 12, so that the light enters the light propagation medium 12, and the light propagation medium 12 guides the light to be propagated to human eyes. When the optical receiver/transmitter 11 emits the light towards the light propagation medium 12, a part of the light does not enter the light propagation medium 12 and cannot be used for display. The part of the light can irradiate the photovoltaic apparatus 13. The photovoltaic apparatus 13 converts a part of light energy into electric energy. The photovoltaic apparatus 13 is electrically connected to the power supply apparatus through a wire 14, to transmit the electric energy converted by the photovoltaic apparatus 13 to the power supply apparatus, and provide the electric energy for the AR glasses 1. In this embodiment, the photovoltaic apparatus 13 is disposed to recycle the light that cannot be used for display, convert the light into the electric energy, and feed back the electric energy to the AR glasses 1, to increase standby time of the AR glasses 1.
As shown in
In this embodiment, the in-coupling grating 121 can change a direction of the light emitted by the optical receiver/transmitter 11, so that the light can enter the optical waveguide 122. The optical waveguide 122 guides the light to be propagated in the optical waveguide 122, and propagated to the out-coupling grating 123. The out-coupling grating 123 changes a direction of the light again, to transmit the light to the human eyes. Due to a diffraction effect of the light, a part of the light directly passes through the in-coupling grating 121 and cannot enter the optical waveguide 122. The part of the light can be absorbed by the photovoltaic apparatus 13, and the photovoltaic apparatus 13 converts the part of the light into electric energy.
Specifically, as shown in
The photovoltaic apparatus 13 is a solar cell, and the solar cell may be one or more of a silicon solar cell, an organic solar cell, a perovskite solar cell, a quantum dot solar cell, a cell obtained by connecting an organic solar cell and a silicon solar cell in series, a cell obtained by connecting a perovskite solar cell and a silicon solar cell in series, and a cell obtained by connecting a quantum dot solar cell and a silicon solar cell in series.
In this embodiment, the optical receiver/transmitter 11 is a micro LED optical receiver/transmitter 11. A micro LED display technology is a display technology in which self-luminous LEDs at a micrometer level are used as light emitting pixel units, and the light emitting pixel units are assembled on a drive panel to form a high-density LED array. Due to features such as a small size, a high integration level, and self-luminance, and the like of the micro LED chip, from a display perspective, the micro LED chip has greater advantages than an LCD and an OLED in terms of brightness, resolution, contrast, power consumption, a service life, a response speed, thermal stability, and the like.
In this embodiment, a light energy recycling process is described in the following.
A voltage is applied to the micro LED, and the LED emits light. In this case, light emitting efficiency of the LED is represented as WPE, namely, a proportion of light energy emitted by the LED to input electric energy.
The optical receiver/transmitter 11 receives the light emitted by the LED, and emits the light. Light receiving efficiency of the optical receiver/transmitter 11 is ηlight. In other words, a proportion of light entering the in-coupling grating 121 is ηlight.
After the light reaches the in-coupling grating 121, ηTr of the light passing through the in-coupling grating 121 does not enter the optical waveguide, and consequently is not used.
The light passing through the in-coupling grating 121 is absorbed by the photovoltaic apparatus 13, and then is converted into electric energy. Conversion efficiency is PCE.
Therefore, a whole process in which the recycled and reused light is converted into the electric energy may be expressed as:
EF=WPExηlightxηTr×PCE.
A proportion (TT) by which the standby time of the AR glasses 1 is increased may be expressed as:
Therefore, it can be estimated that, if the light receiving efficiency of the optical receiver/transmitter 11 is 35%, transmittance of the in-coupling grating 121 is 50%, and photoelectric conversion efficiency of the photovoltaic apparatus 13 is 30%, the standby time of the AR glasses 1 can be increased by about 25 minutes on the basis of standard 8-hour standby time.
As shown in
In this embodiment, the light emitting screen 112 can emit the light. A plurality of lenses 111 are disposed. The light is converged by the plurality of lenses 111 and emitted towards a direction of the in-coupling grating 121. Because a part of the light cannot be collected by the lens 111, the part can be absorbed by the photovoltaic apparatus 13. The photovoltaic apparatus 13 converts the part of the light into electric energy, to reduce a light loss of the optical receiver/transmitter 11.
Further, as shown in
Specifically, as shown in
The material of the housing 113 may be transparent plastic.
The photovoltaic apparatus 13 is a flexible solar cell. The flexible solar cell may be one or more of an organic solar cell, a quantum dot solar cell, a perovskite solar cell, a cell obtained by connecting an organic solar cell and a quantum solar cell in series, a cell obtained by connecting an organic solar cell and a perovskite solar cell in series, and a cell obtained by connecting a quantum dot solar cell and a perovskite solar cell in series.
The light that passes through the in-coupling grating 121 and that does not enter the optical waveguide 122 and the light that is not collected by the lens 111 and that is in the optical receiver/transmitter 11 are recycled and reused. This further increases the standby time of the AR glasses 1. That the two parts of recycled light are combined, and the recycled light energy is converted into electric energy may be expressed as:
A proportion (TT) by which the standby time of the AR glasses 1 is increased may be expressed as:
Therefore, it can be estimated that, if the light receiving efficiency of the optical receiver/transmitter 11 is 35%, the transmittance of the in-coupling grating 121 is 50%, and the photoelectric conversion efficiency of the photovoltaic apparatus 13 is 30%, the standby time of the AR glasses 1 can be increased by about 2 hours on the basis of the standard 8-hour standby time. The increase proportion is about 25%.
An embodiment further provides an AR glasses system. The AR glasses system includes AR glasses 1, a processor, and a memory. Control instructions are set in the memory, and the processor can perform operations based on the control instructions and transfer processed data to the AR glasses 1.
Alternatively, in embodiments, the solution in which the photovoltaic apparatus is used to recycle light and convert light into electric energy may also be used in a projector. Specifically, the photovoltaic apparatus is added to an optical receiver/transmitter of the projector, so that the photovoltaic apparatus recycles light that cannot be collected by a lens and converts the light into electric energy. This increases a service life of the projector.
The foregoing descriptions are merely preferred embodiments of this application, and are not intended to limit this application. For a person skilled in the art, various modifications and variations may be made to this application. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of this application shall fall within the protection scope of this application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202210554304.7 | May 2022 | CN | national |
This application is a continuation of International Application No. PCT/CN2023/080534, filed on Mar. 9, 2023, which claims priority to Chinese Patent Application No. 202210554304.7, filed on May 19, 2022. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2023/080534 | Mar 2023 | WO |
| Child | 18952424 | US |
