WO2020238476A1

WO2020238476A1 - Augmented reality glasses

Info

Publication number: WO2020238476A1
Application number: PCT/CN2020/085685
Authority: WO
Inventors: 雷钊
Original assignee: 维沃移动通信有限公司
Priority date: 2019-05-27
Filing date: 2020-04-20
Publication date: 2020-12-03
Also published as: CN110082846A

Abstract

Provided by the present disclosure are augmented reality glasses. The augmented reality glasses comprise: a main lens; a virtual imaging module, which is used for imaging on the main lens; and a zoom correction module, which is stacked on the main lens and located in an imaging region of the virtual imaging module, wherein the zoom correction module comprises a liquid zoom lens and a pair of light-transmitting electrodes, and the pair of light-transmitting electrodes is provided on opposite surfaces of the liquid zoom lens and is used for generating a variable voltage that causes the liquid zoom lens to deform.

Description

Augmented reality glasses

Cross references to related applications

This application claims the priority of Chinese Patent Application No. 201910445419.0 filed in China on May 27, 2019, the entire content of which is incorporated herein by reference.

Technical field

The embodiments of the present disclosure relate to the field of smart devices, and in particular, to an augmented reality (Augmented Reality, AR) glasses.

Background technique

AR technology has developed rapidly in recent years, and there will be broad application scenarios in the fields of consumption, medical care, and logistics in the future. Glasses have the characteristics of portability and proximity to the eyes, and are recognized by the industry as one of the most suitable product carriers for future AR technology.

However, the AR glasses in the related art are equipped with lenses with a fixed focal length. For users with visual impairments such as myopia or hyperopia, the AR glasses need to be combined with a vision correction device.

Therefore, the AR glasses in the related art lack vision correction function, which leads to an increase in use cost, and has poor universality and poor user experience.

Summary of the invention

Embodiments of the present disclosure provide augmented reality glasses to solve the problems of increased use cost due to lack of vision correction function, poor universality and poor user experience.

In order to solve the above technical problems, the present disclosure is implemented as follows: An augmented reality glasses including:

Primary lens

A virtual imaging module, the virtual imaging module is used for imaging on the main lens;

A zoom correction module, the zoom correction module is stacked on the main lens and located in the imaging area of the virtual imaging module,

Wherein, the zoom correction module includes a liquid zoom lens and a pair of light-transmitting electrodes, and the pair of light-transmitting electrodes are arranged on opposite surfaces of the liquid zoom lens for generating a variable voltage that deforms the liquid zoom lens.

In the embodiment of the present disclosure, the zoom correction module is stacked on the main lens, so that the virtual imaging of the virtual imaging module can be compared with the real imaging of the main lens perspective at the zoom correction module. Overlapping, since the zoom correction module can use the deformation in response to the variable voltage to achieve focus adjustment, the zoom correction module stacked on the main lens can give the augmented reality glasses a vision correction function to avoid The increased use cost caused by the use of the vision correction device while using the augmented reality glasses increases the universality of the augmented reality glasses and improves the user experience.

Description of the drawings

The following drawings only schematically illustrate and explain the present disclosure, and do not limit the scope of the present disclosure:

FIG. 1 is a schematic structural diagram of AR glasses in an embodiment of the present disclosure;

Fig. 2 is a schematic diagram of the zoom correction principle of the AR glasses shown in Fig. 1;

FIG. 3 is a schematic diagram of the structure principle of light path transmission formed in the main lens of the AR glasses shown in FIG. 1;

4 is a schematic diagram of the structure principle of the zoom control part of the AR glasses shown in FIG. 1.

Symbol Description:

100 AR glasses

10 Frame

11 Mirror frame

12 Mirror beam

13 Mirror legs

20 Primary lens

30 Virtual imaging module

40 Zoom correction module

41 Liquid zoom lens

42a The first transparent electrode

42b The second transparent electrode

50 Optical waveguide module

51 Mirror

52 Diffraction grating

53 Semiconductor coupling lens

60 Zoom Electronic Control Module

61 Processor

62 Driver chip

70 Input module

200 human eyes

210 Retina

Detailed ways

The technical solutions in the embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

FIG. 1 is a schematic structural diagram of AR glasses in an embodiment of the disclosure. Referring to FIG. 1, in an embodiment, the AR glasses 100 may include a main lens 20, a virtual imaging module 30 and a zoom correction module 40.

The main lens 20 may be a sheet-shaped body of a transparent material such as resin or glass.

The virtual imaging module 30 may include imaging elements such as a light projection module or a microdisplay to support projection-type or microprocessor-type virtual imaging. In addition, the virtual imaging module 30 is used for imaging on the main lens 20.

The zoom correction module 40 is stacked on the main lens 20. For example, the zoom correction module 40 may be embedded in the main lens 20 or attached to the main lens 20, and the zoom correction module 40 is located in the imaging area of the virtual imaging module 30. Area, where the zoom correction module 40 may include a liquid zoom lens 41 and a pair of light-transmitting electrodes (ie, the first light-transmitting electrode 42a and the second light-transmitting electrode 42b) are arranged on the opposite surface of the liquid zoom lens 41 for generating The variable voltage V_adj that deforms the liquid zoom lens 41.

The liquid zoom lens 41 may include a liquid material. For example, the liquid material may be a mixture of oil and liquid, which is between liquid and solid. When different voltages are applied to the two opposite surfaces of the liquid zoom lens 41, the liquid material will produce a deformation that causes a change in refractive index, and consequently changes the focal length. The first light-transmitting electrode 42a and the second light-transmitting electrode 42b included in the pair of light-transmitting electrodes may be made of transparent conductive materials, such as N-type oxide semiconductor-indium tin oxide (ITO).

Fig. 2 is a schematic diagram of the zoom correction principle of the AR glasses shown in Fig. 1. Referring to FIG. 2, the zoom correction module 40 deforms in response to the voltage change of the variable voltage V_adj, and can calibrate the adjustment of the imaging focal length of the retina 210 of the human eye 200.

It can be seen that, in this embodiment, the zoom correction module 40 is superimposed on the main lens 20, so that the virtual imaging of the virtual imaging module 30 can be superimposed at the zoom correction module 40 with the real imaging of the main lens 20. The correction module 40 can use the deformation in response to the variable voltage V_adj to achieve focal length adjustment. Therefore, the zoom correction module 40 stacked on the main lens 20 can give the AR glasses 100 a vision correction function to avoid the use of AR glasses 100. At the same time, the use of vision correction devices will increase the cost of use, and improve the universality of augmented reality glasses and improve user experience.

FIG. 3 is a schematic diagram of the structural principle of the light path transmission formed in the main lens of the AR glasses shown in FIG. 1. As shown in FIG. 3, the imaging area of the virtual imaging module 30 in the main lens 20 is deviated from the light projection position of the virtual imaging module 30 in the main lens 20. In this case, the virtual imaging of the virtual imaging module 30 needs to be from The projection position is transmitted to the imaging area where the zoom correction module 40 is located.

To this end, this embodiment provides an implementation based on optical waveguide technology, that is, the AR glasses 100 may further include an optical waveguide module 50. The optical waveguide module 50 can be embedded in the main lens 20, and the optical waveguide module 50 extends from the light projection position of the virtual imaging module 30 on the main lens 20 to the imaging area where the zoom correction module 40 is located. The optical waveguide module 50 can be regarded as an optical waveguide path between the aforementioned light projection position of the virtual imaging module 30 and the imaging area.

For example, in FIG. 3, as an optional implementation manner, the optical waveguide module 50 may specifically include a reflective lens 51, a diffraction grating film 52, and a semiconductor coupling lens 53.

The reflective lens 51 has a light entrance side that receives incident light from the virtual imaging module 30 at the light projection position of the main lens 20 and a light exit side that forms reflected light in the mirror direction of the main lens 20. For example, the reflector 51 can set the light projection position of the virtual imaging module 30 on the main lens 20, and the reflector 51 can have a reflection angle that adjusts the projection light of the virtual imaging module 30 to be along the mirror direction of the main lens 20.

The diffraction grating film 52 may be disposed between the light exit side of the reflective lens 51 and the imaging area where the zoom correction module 40 is located. The diffraction grating film 52 can produce an optical waveguide effect that transfers the layered light from the light entrance side to the light exit side in a diffractive manner, and any dielectric material that can produce such an optical waveguide effect can be selected.

The semiconductor coupling lens 53 is arranged on the light exit side of the diffraction grating film, and the optical waveguide coupling imaging surface of the semiconductor coupling lens 53 is located in the imaging area where the zoom correction module 40 is located. The semiconductor coupling lens 53 can couple the light transmitted to the light exit side of the diffraction grating film 52 in a diffractive manner to obtain the image content contained in the projected light of the virtual imaging module 30, and in the imaging area where the zoom correction module 40 is located. Show.

As a result, the image content displayed by the semiconductor coupling lens 53 in the imaging area can be used as a virtual imaging and superimposed with the real imaging also seen through in the imaging area to form an AR image. The superimposed AR image can be projected onto the retina 210 of the human eye 200 at a focal length determined by the deformation of the zoom correction module 40 in response to the variable voltage V_adj to form a clear AR image on the retina 210.

Referring back to FIG. 1, for the adjustment of the variable voltage V_adj, this embodiment provides a zoom control part that is convenient for the user to operate, that is, the AR glasses 100 may further include a zoom electronic control module 60 and an input module 70.

The zoom electronic control module 60 can drive the light-transmitting electrode pair (the first light-transmitting electrode 42a and the second light-transmitting electrode 42b) to generate a variable voltage V_adj.

The input module 70 may be used to receive user input and generate an adjustment signal in response to the user input, where the adjustment signal is used to control the variable voltage V_adj.

4 is a schematic diagram of the structure principle of the zoom control part of the AR glasses shown in FIG. 1. As shown in FIG. 4, in the structure of the above-mentioned zoom control part, the zoom electronic control module 60 may include a processor 61 and a driving chip 62. The processor 61 and the driver chip 62 may be connected by a bus based on a serial protocol, such as an Inter-Integrated Circuit (I2C) protocol or a Serial Peripheral Interface (SPI) protocol.

The processor 61 can identify (or parse) the adjustment signal generated by the input module 70. The driving chip 62 can control the variable voltage V_adj generated by the light-transmitting electrode pair (ie, the first light-transmitting electrode 42a and the second light-transmitting electrode 42b) according to the adjustment signal recognized (or analyzed) by the processor 61.

Referring back to FIG. 1 again, the AR glasses 100 may further include a frame 10, and the frame 10 includes a frame 11, a bridge 12 and a temple 13.

The spectacle frames 11 are arranged in pairs, and each spectacle frame 11 can be equipped with a main lens 20. The mirror beam 12 is bridged between a pair of mirror frames 11. That is, in this embodiment, the structure of a double lens is taken as an example. However, it can be understood that such a dual-lens structure should not constitute an exclusive limitation on the integral lens.

Each mirror frame 11 can also be equipped with a virtual imaging module 30. That is, a dual imaging mode capable of supporting two-dimensional (2-dimensional, 2D) and three-dimensional (3-dimensional, 3D) is realized based on a pair of virtual imaging modules 30 at the same time. It is understandable that the dual imaging mode should not constitute an exclusive limitation on the single imaging mode.

In FIG. 1, the virtual imaging module 30 installed in each frame 11 can be suspended on the front side of the main lens 20 (the side of the AR glasses 100 that image the scene when worn), and the virtual imaging module 30 installed in each frame 11 The imaging module 30 is arranged on the upper part of the main lens 20. This also should not be understood to exclude the possibility of setting the virtual imaging module 30 on the back side of the main lens 20 (the side of the AR glasses 100 that faces the human eye when worn) and the possibility of being suspended at the lower part of the main lens 20.

The beam 12 can be equipped with a zoom electronic control module 60. The zoom electronic control module 60 can be installed in a hidden type at the mirror beam 12. For example, the mirror beam 12 can have an inner cavity for accommodating the zoom electronic control module 60.

The temples 13 are connected in pairs on the outer sides of the pair of mirror frames 11 opposite to each other, that is, the temples 13 are arranged in pairs, each temple 13 is connected to the outer side of the mirror frame 11, and only one of the temples 13 can be installed Input module 70.

In order to facilitate the detection of user operations, the input module 70 may be exposed outside the temple 13. And, taking into account the ease of execution of user operations. The input module 70 can detect the user's sliding touch in the length direction of the temple 13 and use the detected sliding touch as user input to generate an adjustment signal, that is, the input module 70 receives the user's sliding touch in the length direction of the temple 13 The sliding touch, and in response to the sliding touch, generates an adjustment signal. Wherein, for the case where the detected sliding touch is used as the user input to generate the adjustment signal, the amount of change in the voltage value of the variable voltage V_adj under the control of the adjustment signal may be associated with the sliding distance and direction of the sliding touch.

For example, the input module 70 may include a touch bar module. The user's operating hand can slide along the length of the temple 13 to change the contact position. Accordingly, the variable voltage V_adj under the control of the adjustment signal can follow the user The offset of the contact position of the operating hand along the length of the temple 13 changes accordingly.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article or device that includes the element.

The embodiments of the present disclosure are described above with reference to the accompanying drawings, but the present disclosure is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present disclosure, many forms can be made without departing from the purpose of the present disclosure and the scope of protection of the claims, all of which fall within the protection of the present disclosure.

Claims

An augmented reality glasses, including:

Primary lens

A virtual imaging module, the virtual imaging module is used for imaging on the main lens;

A zoom correction module, the zoom correction module is stacked on the main lens and located in the imaging area of the virtual imaging module,

Wherein, the zoom correction module includes a liquid zoom lens and a pair of light-transmitting electrodes, the pair of light-transmitting electrodes is arranged on the opposite surface of the liquid zoom lens, and is used to generate a variable voltage that deforms the liquid zoom lens.
The augmented reality glasses according to claim 1, further comprising:

The optical waveguide module is embedded in the main lens, and the optical waveguide module extends from the light projection position of the virtual imaging module to the imaging area.
The augmented reality glasses according to claim 2, wherein the optical waveguide module comprises:

A reflective lens, the reflective lens having a light entrance side that receives incident light from the light projection position, and a light exit side that forms the reflected light along the mirror surface of the main lens;

A diffraction grating film, the diffraction grating film is disposed between the light exit side of the reflective lens and the imaging area;

A semiconductor coupling lens, the semiconductor coupling lens is arranged on the light exit side of the diffraction grating film, and the optical waveguide coupling imaging surface of the semiconductor coupling lens is located in the imaging area.
The augmented reality glasses according to claim 1, further comprising:

A zoom electronic control module, the zoom electronic control module drives the light-transmitting electrode pair to generate the variable voltage;

The input module is configured to receive user input and generate an adjustment signal in response to the user input, wherein the adjustment signal is used to control the variable voltage.
The augmented reality glasses according to claim 4, further comprising:

Spectacle frames, the spectacle frames are arranged in pairs, wherein each of the spectacle frames is equipped with a main lens, and each of the spectacle frames is equipped with a virtual imaging module;

A mirror beam, the mirror beam is bridged between a pair of the mirror frames, and the mirror beam is equipped with the zoom electronic control module; and

The temples, the temples are arranged in pairs, each of the temples is connected to the outside of the mirror frame, and one of the temples is equipped with the input module.
The augmented reality glasses according to claim 5, wherein the virtual imaging module installed in each of the spectacle frames is suspended on the front side of the main lens.
The augmented reality glasses according to claim 5, wherein the virtual imaging module installed in each of the spectacle frames is arranged on the upper part of the main lens.
5. The augmented reality glasses according to claim 5, wherein the input module is used to receive a user's sliding touch in the length direction of the temple, and respond to the sliding touch to generate the adjustment signal.
The augmented reality glasses according to claim 1, wherein the virtual imaging module comprises a light projection module or a micro display.
8. The augmented reality glasses according to claim 8, wherein the input module comprises a touch bar.