CN113534447A

CN113534447A - Near-to-eye display optical system and near-to-eye display device

Info

Publication number: CN113534447A
Application number: CN202110806753.1A
Authority: CN
Inventors: 李志林
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-10-22

Abstract

The application provides a near-to-eye display optical system and near-to-eye display equipment, and relates to the technical field of intelligent equipment. In the near-eye display optical system, a laser is used for emitting light with image information, a transmission component is used for transmitting the light, a micro-electro-mechanical system scanning mirror is used for receiving the light transmitted by the transmission component and deflecting and scanning the light direction of the light, a lens component is used for transmitting the light deflected and scanned by the micro-electro-mechanical system scanning mirror to adjust the light into parallel light, and an optical waveguide display component comprises an optical coupling light-in part and an optical coupling light-out part. The optical waveguide display part is used for coupling light rays transmitted through the lens component in the optical coupling light-in part and coupling the light rays out in the optical coupling light-out part. The application omits a near-eye display optical system and unnecessary occupied space of the near-eye display equipment utilizing the near-eye display optical system, so that the near-eye display equipment utilizing the near-eye display optical system is light and convenient, and the wearing experience of a user is improved.

Description

Near-to-eye display optical system and near-to-eye display device

Technical Field

The application relates to the technical field of intelligent equipment, in particular to a near-eye display optical system and near-eye display equipment.

Background

In the current virtual reality/augmented reality display technology, a display scheme generally adopts a Digital Light Processing (DLP) or Liquid Crystal on Silicon (LCoS) display technology, a structural size of a device such as glasses based on the Liquid Crystal on Silicon (LCoS) display technology cannot be reduced, a bird bath (bird bath) scheme is adopted in the Digital Light Processing display technology, and the device such as glasses based on the Digital Light Processing display technology ensures a display effect but the size of the glasses is too large.

Disclosure of Invention

The present application provides a near-eye display optical system comprising:

a laser for emitting light having image information, the laser comprising:

a semiconductor stack; and

a plurality of semiconductor laser sub-pixel units arranged on the semiconductor lamination layer and used for emitting the light;

the transmission assembly is used for transmitting the light;

the MEMS scanning mirror is used for receiving the light transmitted by the transmission component and deflecting and scanning the light direction of the light;

the lens component is used for transmitting the light deflected and scanned by the scanning mirror of the micro electro mechanical system so as to adjust the light into parallel light; and

an optical waveguide display includes an optical coupling-in portion and an optical coupling-out portion. The optical waveguide display part is used for coupling the light rays penetrating through the lens component in the optical coupling light-in part and coupling the light rays out in the optical coupling light-out part.

On the other hand, this application still provides a near-to-eye display device, including headgear, neck wear device and foretell near-to-eye display optical system, near-to-eye display optical system sets up on the headgear, neck wear device be used for with the headgear electricity is connected, neck wear device is provided with mainboard and battery, the battery is used for the normal work of headgear provides the electric energy, the mainboard is used for receiving the data of headgear output, and with data processing back input to headgear.

According to the laser, semiconductor technology transformation is carried out on the laser, and a plurality of semiconductor laser sub-pixel units are arranged in the semiconductor lamination layer, so that the effect of the laser is achieved, and the size and the quality of the laser are reduced; in addition, the number of the scanning mirrors of the one-dimensional micro-electro-mechanical system is reduced by adopting the scanning mirrors of the two-dimensional micro-electro-mechanical system, and the volume and the quality of the near-eye display optical system are further reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 discloses a schematic structural diagram of a near-eye display optical system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a laser according to the embodiment of FIG. 1;

FIG. 3 is a schematic diagram of a laser in the prior art;

FIG. 4 is a schematic diagram of a transmission assembly according to the embodiment of FIG. 1;

FIG. 5 is a schematic diagram of a laser and a microlens array according to the embodiment of FIG. 1;

FIG. 6 is a schematic diagram of a planar optical waveguide according to the embodiment of FIG. 4;

FIG. 7 is a schematic diagram illustrating a structure of a near-eye display device according to an embodiment of the present application;

FIG. 8 is a schematic view of the embodiment of the present application in FIG. 7;

FIGS. 9 and 10 respectively disclose the structural schematic diagrams of the support assembly in the embodiment of FIG. 8 of the present application;

FIG. 11 is a schematic view of the neck wear apparatus shown in FIG. 7 according to the present application.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings and embodiments. In particular, the following embodiments are merely illustrative of the present application, and do not limit the scope of the present application. Likewise, the following embodiments are only some embodiments of the present application, not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

With the rapid application of Augmented Reality (AR), Virtual Reality (VR), and Mixed Reality (MR), near-eye display devices have also been rapidly developed. The near-eye display equipment can be applied to display effects such as virtual reality, augmented reality or mixed reality. The specific structure and the implementation principle of the near-eye display device are introduced here, in practical application, the near-eye display device includes a near-eye display optical system, and inevitably further includes a power module for supplying power, a communication module for performing information interaction with other terminals, a processor for controlling the power module, the communication module and the display module, a circuit board for integrally setting the structures such as the power module, the communication module, the display module and the processor, and mechanical structures such as a bracket and a housing for fixing the structures and facilitating wearing by a user, and the structures are not particularly limited in this embodiment.

Referring to fig. 1, a schematic structural diagram of a near-eye display optical system according to an embodiment of the present application is disclosed. The near-eye display optical System 100 may include a laser 10 emitting light having virtual image information, a transmission component 20 transmitting the light, a two-dimensional Micro-Electro-Mechanical System (MEMS) scanning mirror (also called "two-dimensional MEMS scanning galvanometer" or "two-dimensional MEMS galvanometer") 30 for deflecting and scanning a light direction of the light, a lens component 40 transmitting the light and adjusting the light into parallel light, and an optical waveguide display 50 receiving the parallel light and imaging the image information. The laser 10 emits light with virtual image information, the light can be transmitted through the transmission component 20, the light can be transmitted to the two-dimensional mems scanning mirror 30 through the transmission component 20, the two-dimensional mems scanning mirror 30 performs light direction deflection scanning, and then the light passes through the lens component 40 to form parallel light, the parallel light is coupled into the optical waveguide display 50 at the optical coupling light-in part 51 and transmitted in the optical waveguide display 50, and the optical waveguide display 50 is coupled out at the optical coupling light-out part 52 and emitted into human eyes, so as to realize the function of virtual reality. In another embodiment, the external environment light can penetrate through the optical waveguide display 50, couple with the light having the virtual image information coupled out from the light coupling-out portion 52 and enter into human eyes together, so as to realize the effect of superimposing the virtual image on the external environment, thereby realizing the function of augmented reality.

By structurally improving the laser 10 and the transmission assembly 20, the whole quality and the occupied space of the near-eye display optical system 100 and the near-eye display equipment using the near-eye display optical system 100 are reduced, and the user experience is improved.

In addition, the mems scanning mirror, the lens assembly and the optical waveguide display are further adjusted, so that the overall quality and the occupied space of the near-eye display optical system 100 and the near-eye display apparatus using the near-eye display optical system 100 can be further reduced by the two-dimensional mems scanning mirror 30, the lens assembly 40 and the optical waveguide display 50, and the user experience can be further improved.

Referring to fig. 1 and 2, fig. 2 is a schematic diagram illustrating a structure of a laser 10 according to the embodiment shown in fig. 1. The laser 10 may include a semiconductor stack 11, a semiconductor laser pixel unit 12 disposed in the semiconductor stack 11, and a driving circuit (not shown) disposed in the semiconductor stack 11. Wherein the semiconductor laser pixel cells 12 can be controlled by the driving circuit to emit light with image information.

The semiconductor stack 11 may include a stack of substrates, buffer layers, confinement layers, top layers, and the like. The semiconductor stack 11 may be stacked from a stack of a substrate, a buffer layer, a confinement layer, a top layer, and the like in a previously designed stack structure. Of course, in some embodiments, the stack may not be limited to the individual stacks mentioned herein, but may include other types of stacks. The stack can be designed in a technical solution known to those skilled in the art, and will not be described in detail.

Semiconductor laser pixel cells 12 may include a plurality of semiconductor laser sub-pixel cells (e.g., red semiconductor laser sub-pixel cell 121, green semiconductor laser sub-pixel cell 122, blue semiconductor laser sub-pixel cell 123, and infrared semiconductor laser sub-pixel cell 124) arranged in a matrix.

In one embodiment, the number of the plurality of semiconductor laser sub-pixel units may be four, which are the red semiconductor laser sub-pixel unit 121, the green semiconductor laser sub-pixel unit 122, the blue semiconductor laser sub-pixel unit 123 and the infrared semiconductor laser sub-pixel unit 124. Among them, a red semiconductor laser sub-pixel unit 121, a green semiconductor laser sub-pixel unit 122, a blue semiconductor laser sub-pixel unit 123, and an infrared semiconductor laser sub-pixel unit 124 may be arranged in the semiconductor stack 11 and electrically connected to the driving circuit so as to be controlled by the driving circuit.

Red semiconductor laser sub-pixel element 121 may be configured to emit red visible light, green semiconductor laser sub-pixel element 122 may be configured to emit green visible light, blue semiconductor laser sub-pixel element 123 may be configured to emit blue visible light, and infrared semiconductor laser sub-pixel element 124 may be configured to emit infrared light.

In one embodiment, red semiconductor laser sub-pixel element 121, green semiconductor laser sub-pixel element 122, blue semiconductor laser sub-pixel element 123, and infrared semiconductor laser sub-pixel element 124 may be arranged in layers in semiconductor stack 11. In one embodiment, red semiconductor laser sub-pixel element 121, green semiconductor laser sub-pixel element 122, blue semiconductor laser sub-pixel element 123, and infrared semiconductor laser sub-pixel element 124 may be arranged in different layers in semiconductor stack 11, and at least one semiconductor laser sub-pixel element may be arranged in the same layer.

Referring to fig. 3, fig. 3 shows a schematic diagram of a laser 10' in the prior art. The laser 10 'may comprise a plurality of sub-lasers, such as a first sub-laser 101', a second sub-laser 102 'and a third sub-laser 103'. Each sub-laser, for example, the first sub-laser 101', may include a stack of semiconductor layers 11', a semiconductor laser sub-pixel unit 12' disposed in the stack of semiconductor layers 11', a driving circuit (not shown) disposed in the stack of semiconductor layers 11', and a housing 13' enclosed in the stack of semiconductor layers 11 '. Wherein the semiconductor laser sub-pixel unit 12' is controlled by the driving circuit to emit light with image information. The first sub-laser 101', the second sub-laser 102', and the third sub-laser 103' may emit light of only one of three colors, red, green, and blue.

It is noted that the terms "first", "second", etc. are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features.

In one embodiment, the number of sub-lasers 10' may be selected according to the requirements of existing designs.

Referring to fig. 2 and 3 together, the volume of the laser 10' in the prior art design is significantly larger than that of the laser 10 in the present application due to the number of sub-lasers and the structural design. In the laser 10 of the present application, the red semiconductor laser sub-pixel unit 121, the green semiconductor laser sub-pixel unit 122, the blue semiconductor laser sub-pixel unit 123, and the infrared semiconductor laser sub-pixel unit 124 are integrated in the semiconductor stack 11, so that the structure of the laser 10 'in the prior art is changed, and further the volume of the laser 10' in the prior art is reduced, so that the overall quality and the occupied space of the near-eye display optical system 100 and the near-eye display device using the near-eye display optical system 100 are reduced, and the user experience is improved.

Referring to fig. 2 again, the laser 10 may directly integrate the red semiconductor laser sub-pixel unit 121, the green semiconductor laser sub-pixel unit 122, the blue semiconductor laser sub-pixel unit 123, and the infrared semiconductor laser sub-pixel unit 124 through a semiconductor process, and is specifically packaged by a housing.

In one embodiment, the substrate in the semiconductor stack 11 may be a GaAs (gallium arsenide) substrate. The active layers in the red semiconductor laser sub-pixel unit 121, the green semiconductor laser sub-pixel unit 122, the blue semiconductor laser sub-pixel unit 123, and the infrared semiconductor laser sub-pixel unit 124 may use different light emitting materials.

In one embodiment, the substrate in the semiconductor stack 11 may be a GaAs substrate, and the active layers in the red semiconductor laser sub-pixel unit 121, the green semiconductor laser sub-pixel unit 122, and the blue semiconductor laser sub-pixel unit 123 may be one or more of an InGaN (indium gallium nitride) active layer, an InGaAlP (indium gallium aluminum phosphorus) active layer, and an AlGaAs (aluminum gallium arsenide) active layer.

In one embodiment, the substrate in the semiconductor stack 11 may be a GaAs substrate, and the active layer in the infrared semiconductor laser sub-pixel unit 124 may be one of an AlGaAs active layer and an InGaAs active layer.

In one embodiment, the substrate in the semiconductor stack 11 may be an InP (indium phosphide) substrate, and the active layer in the infrared semiconductor laser sub-pixel unit 124 may be an InGaAsP (indium gallium arsenic phosphide) active layer.

In one embodiment, the laser 10 may be fabricated using mask lithography. For example, in a semiconductor light production process, for different light emitting regions, a semiconductor laser sub-pixel unit, such as a red semiconductor laser sub-pixel unit 121, is manufactured by first protecting the light emitting regions with a mask, and then another semiconductor laser sub-pixel unit is manufactured, and finally a plurality of semiconductor laser sub-pixel units, such as the red semiconductor laser sub-pixel unit 121, a green semiconductor laser sub-pixel unit 122, a blue semiconductor laser sub-pixel unit 123, an infrared semiconductor laser sub-pixel unit 124, and the like, are manufactured, so that a plurality of semiconductor laser sub-pixel units are integrated on the same substrate. Of course, the laser 10 may be fabricated in other ways.

It can be seen that the present application provides a semiconductor integrated design for the laser 10, thereby ensuring the minimum light source size of the laser 10.

In one embodiment, infrared semiconductor laser sub-pixel elements 124 are used to correct for light effects. The near-eye display optical system 100 can detect and correct the coupling effect of the light beams emitted by the red semiconductor laser sub-pixel unit 121, the green semiconductor laser sub-pixel unit 122, and the blue semiconductor laser sub-pixel unit 123 through the light beams emitted by the infrared semiconductor laser sub-pixel unit 124.

In one embodiment, the red semiconductor laser sub-pixel unit 121, the green semiconductor laser sub-pixel unit 122, and the blue semiconductor laser sub-pixel unit 123 respectively emit light having image information for imaging.

Referring again to fig. 1 and 4, fig. 4 discloses a schematic structural diagram of the transmission assembly 20 in the embodiment shown in fig. 1 of the present application. The transmission assembly 20 may include a micro lens array 21 for receiving the light with image information from the laser 10 and a planar optical waveguide 22 for receiving the light transmitted through the micro lens array 21 and transmitting the light to the two-dimensional mems scanning mirror 30. The planar optical waveguide 2 can couple light beams respectively emitted by the red semiconductor laser sub-pixel unit 121, the green semiconductor laser sub-pixel unit 122, the blue semiconductor laser sub-pixel unit 123 and the infrared semiconductor laser sub-pixel unit 124 in the laser 10 into a beam of light beam, so as to transmit the light beam to the two-dimensional mems scanning mirror 30.

The planar optical waveguide 22 is adopted to transmit light, and the space occupied by the transmission components and the optical path can be reduced, so that the overall quality and the occupied space of the near-eye display optical system 100 and the near-eye display equipment using the near-eye display optical system 100 are reduced, and the user experience is improved.

The microlens array 21 may include a plurality of microlenses, such as a first microlens 211, a second microlens 212, a third microlens 213, and a fourth microlens 214. The plurality of micro lenses can correspond to the plurality of semiconductor laser sub-pixel units one by one.

In one embodiment, referring to fig. 5, fig. 5 is a schematic diagram illustrating a structure of the laser 10 and the microlens array 21 according to the embodiment shown in fig. 1. Wherein the light with image information emitted from the red semiconductor laser sub-pixel unit 121 can pass through the first micro-lens 211. Light having image information emitted from the green semiconductor laser sub-pixel unit 122 can pass through the second micro-lens 212. Light having image information emitted from the blue semiconductor laser sub-pixel unit 123 may pass through the third microlens 213. The light having image information emitted from the infrared semiconductor laser sub-pixel unit 124 can be transmitted through the fourth microlens 214.

In one embodiment, the micro-Lens, such as the first micro-Lens 211, may be at least one of a Collimating Lens (Collimating Lens), a condensing Lens (Collecting Lens), such as an optical sphere Lens (Ball Lens), a cylinder Lens (cylinder Lens), a refractive micro-Lens, a diffractive micro-Lens, such as a micro-Fresnel Lens, and other aspheric lenses.

Referring to fig. 6, fig. 6 shows a schematic structural diagram of the planar optical waveguide 22 in the embodiment shown in fig. 4. The Planar Lightwave Circuit (PLC) 22 may include a base 221, light incoupling and

outcoupling portions

222 and 223 provided on the base 221, and a light coupling section 224 provided in the base 221 and communicating the light incoupling and

outcoupling portions

222 and 223. The light transmitted through the microlens array 21 is coupled into the substrate 221 from the light coupling section 222, and is coupled in the light coupling section 224, and then is coupled out from the light coupling section 223 and transmitted to the two-dimensional mems scanning mirror 30.

In an embodiment, the light incoupling part 222 may be provided with a plurality of sub light incoupling parts such as a first sub light incoupling part 2221, a second sub light incoupling part 2222, a third sub light incoupling part 2223, and a fourth sub light incoupling part 2224.

In one embodiment, the sub-light incoupling parts correspond to the micro-lenses one by one. For example, referring to fig. 4 and 6, the light transmitted through the first microlenses 211 is coupled into the base 221 from the first sub light-coupling portions 2221. The light transmitted through the second microlenses 212 is coupled into the base 221 from the second sub-light coupling-in portions 2222. The light transmitted through the third microlenses 213 is coupled into the base 221 from the third sub-light coupling-in portions 2223. The light transmitted through the fourth microlens 214 is coupled into the base 221 from the fourth sub-light coupling-in portion 2224.

Referring to fig. 6 again, the light coupling section 224 may be connected to a plurality of sub light incoupling parts, such as a first sub light incoupling part 2221, a second sub light incoupling part 2222, a third sub light incoupling part 2223 and a fourth sub light incoupling part 2224, respectively, so that light rays coupled into the base body 221 from the first sub light incoupling part 2221, the second sub light incoupling part 2222, the third sub light incoupling part 2223 and the fourth sub light incoupling part 2224 are coupled into a bundle of light rays.

The light out-coupling part 223 may include a plurality of sub light out-coupling parts 223, for example, a first sub light out-coupling part 2231 and a second sub light out-coupling part 2232.

The plurality of sub light out-coupling portions 223 may be respectively connected to the light coupling section 224, so that the coupled light is divided into a plurality of light rays and is respectively out-coupled from the plurality of sub light out-coupling portions to the substrate 221.

In an embodiment, the plurality of sub light out-coupling portions 223 may include a first sub light out-coupling portion 2231 and a second sub light out-coupling portion 2232. The light from the first sub light out-coupling part 2231 can be used to detect and correct the light coupling effect of the red semiconductor laser sub-pixel unit 121, the green semiconductor laser sub-pixel unit 122, and the blue semiconductor laser sub-pixel unit 123. The light coupled out from the second sub light out-coupling portion 2232 can be transmitted to the two-dimensional mems scanning mirror 30.

In the prior art, a plurality of one-dimensional mems scanning mirrors are used in a near-eye display optical system, and generally, the plurality of one-dimensional mems scanning mirrors are driven by static electricity or electromagnetism. Therefore, the volume of the near-eye display optical system in the existing design is made significantly larger than that in the present application due to the design.

In the present application, the two-dimensional mems scanning mirror 30 is adopted, so that the number of mems scanning mirrors can be reduced, and the size of the near-eye display optical system can be reduced, so that the overall mass and the occupied size of the near-eye display optical system 100 and the near-eye display device using the near-eye display optical system 100 can be reduced, and the user experience can be improved.

In addition, the two-dimensional MEMS scanning mirror 30 can be driven by piezoelectric ceramics such as lead zirconate titanate piezoelectric ceramics. After the lead zirconate titanate piezoelectric ceramic is powered on, the two-dimensional mems scanning mirror 30 will vibrate with different directional frequencies when voltages with different frequencies are applied. More than half of the power consumption can be saved because the efficiency of the lead zirconate titanate piezoelectric ceramic drive is far higher than that of the electrostatic and electromagnetic drive modes.

Furthermore, in the prior art, both electrostatic and electromagnetic driving require peripheral devices and circuits, which occupy more space. In the present application, the two-dimensional mems scanning mirror 30 can be driven by the lead zirconate titanate piezoelectric ceramic, thereby saving unnecessary space.

Referring again to fig. 1, the light passing through the lens assembly 40 becomes parallel light. The lens assembly 40 has a positive optical power. The lens assembly 40 is capable of focusing light scanned by the two-dimensional MEMS scanning mirror 30 and performing aberration correction on the light. The lens assembly 40 may include at least one lens. The lens may be a positive lens or a negative lens, so that the lens assembly 40 changes the light rays into parallel light rays under the condition of the arrangement combination and cooperation of the convex lens and/or the concave lens. The lens can be made of plastic or glass or resin, and the surface profile of the lens can be spherical or aspherical.

It is to be understood that "a member having positive refractive power" in the present specification means that the group as a whole has positive refractive power. Similarly, "a member having negative refractive power" means that the group as a whole has negative refractive power. "a lens having positive refractive power" means the same as "a positive lens". The "lens having negative refractive power" has the same meaning as the "negative lens". The "lens unit" is not limited to a configuration including a plurality of lenses, and may be a configuration including only 1 lens.

In one embodiment, each lens in lens assembly 40 may be made of a resin, such as a relatively light weight resin, and all of the lenses in lens assembly 40 may be made as a single piece (i.e., a unitary structure) using a single molding process that minimizes space usage and weight.

The light guide display 50 is considered to be an optical solution of choice for near-eye display devices such as AR or VR glasses due to its thinness and high transmission characteristics of ambient light.

In one embodiment, in a near-eye display device such as AR or VR glasses, the light guide display 50 can couple light transmitted through the lens assembly 40 into its glass substrate at the light incoupling portion 51, and transmit the light to the light outcoupling portion 52 in front of the eye by the principle of "total reflection" to be released so that the light is incident into the human eye. In this process, the optical waveguide display 50 is only responsible for transmitting images, and can make the light rays 'parallel light in and parallel light out'.

In one embodiment, the thickness of the optical waveguide display 50 is less than 0.3 mm.

Next, a near-eye display apparatus that can be provided with the near-eye display optical system 100 in the above-described embodiment will be explained. Please refer to fig. 7, which discloses a schematic structural diagram of a near-eye display device in an embodiment of the present application. Near-eye display apparatus 200 may include a headset 300 and a neck-mounted device 400 electrically connected to headset 300. Wherein the head-mounted device 300 is worn on the head of the user. The near-eye display optical system 100 may be provided in the head-mounted device 300. The neck wear apparatus 400 is worn on the neck of a user. The neck-worn device 400 serves as an external host of the head-worn device 300 and communicates with the head-worn device 300. The neck-worn device 400 can be responsible for data processing of the head-worn device 300 and the operation of some or all of the electronic components inside the head-worn device 300. Of course, the neck worn device 400 can also power the head worn device 300.

The near-to-eye display device 200 in this application moves the electronic components such as host computer, battery etc. inside the head-mounted device 300 to the neck-mounted device 400, thereby can further reduce the volume and the quality of head-mounted device 300 and guarantee the lightweight of head-mounted device 300, lightens the weight of wearing, promotes user's experience. The user experience is improved.

Referring to fig. 7 and 8, fig. 8 is a schematic structural diagram of a headset 300 according to the embodiment shown in fig. 7. The head-mounted device 300 may include a housing assembly 60, a support assembly 70 coupled to opposite ends of the housing assembly 60, and a near-eye display optical system 100 housed within the housing assembly 60. Of course, in some embodiments, the optical waveguide display 50 in the near-eye display optical system 100 may be disposed on the housing assembly 60, while other electronic components in the near-eye display optical system 100, such as the laser 10, the transmission assembly 20, the two-dimensional mems scanning mirror 30, the lens assembly 40, etc., may be disposed in the support assembly 70.

The housing member 60 and the support member 70 can form a frame to facilitate the head-mounted device 300 to be worn on the head of the user, and to distribute the weight of the head-mounted device 300 borne by the head of the user at the housing member 60 and the support member 70.

The headset 300 may be configured to communicate data to and receive data from an external processing device, such as the neck wear 400, through a signal connection, which may be a wired connection, a wireless connection, or a combination thereof.

However, in other cases, the headset 300 may be used as a stand-alone device, i.e., data processing is performed on the headset 300 itself. The signal connection may be configured to carry any kind of data, such as image data (e.g., still images and/or full motion video, which may include 2D and 3D images), audio, multimedia, voice, and/or any other type of data. The external processing device may be, for example, a gaming console, a personal computer, a tablet computer, a smart phone, or other type of processing device. The signal connection may be, for example, a Universal Serial Bus (USB) connection, a Wi-Fi connection, a bluetooth or Bluetooth Low Energy (BLE) connection, an ethernet connection, a cable connection, a DSL connection, a cellular connection (e.g., 3G, LTE/4G or 5G), etc., or a combination thereof. Of course, the external treatment device may also be the neck-worn apparatus 400. Additionally, the external processing device may communicate with one or more other external processing devices via a network, which may be or include, for example, a Local Area Network (LAN), a Wide Area Network (WAN), an intranet, a Metropolitan Area Network (MAN), the global internet, or a combination thereof.

The headset 300 may also include an ambient light sensor, a camera, a heat sink, etc., and may also include electronic circuitry to control at least some of the above components and perform associated data processing functions. The electronic circuitry may include, for example, one or more processors and one or more memories.

Referring to fig. 8, fig. 8 discloses a schematic structural diagram of the housing assembly 60 according to the embodiment of the present application shown in fig. 7. The housing assembly 60 may include a housing body 61 and a nose piece 62 disposed on the housing body 61. Here, the near-eye display optical system 100 may be partially or entirely provided within the housing main body 61.

Referring to fig. 8, 9 and 10, fig. 9 and 10 respectively disclose a schematic structural diagram of the support assembly 70 according to the embodiment of fig. 8. The support assembly 70 may include two legs, a first leg 21 connected to one end of the housing body 61 and a second leg 22 connected to the other end of the housing body 61.

Legs, such as first leg 71 and second leg 72, are used to rest between the ear and the head, enabling weight sharing of the headgear 300.

One end of each of the legs, such as the first leg 71 and the second leg 72, may be provided with a flexible circuit board 711 to extend into the housing main body 61, so as to achieve electrical connection between the near-eye display optical system 100 and other electronic components, such as the laser 10 and the two-dimensional mems scanning mirror 30, and the electronic components, such as a motherboard, a battery, etc., may be electrically connected through the flexible circuit board 711.

The ends of the legs, such as the first leg 71 and the second leg 72, away from the housing body 61 can be provided with electrical connections 712 for connecting with external devices, such as the neck-wearing device 400, batteries, and electronic devices for image processing, such as a mobile phone and a computer, so as to realize the image resources required for processing the head-wearing device 300 by using the external devices, such as the neck-wearing device 400. By removing the battery, electronic components available for image processing, from the head-mounted device 300 and moving to the neck-mounted device 400, the weight of the head-mounted device 300 can be greatly reduced, and miniaturization and weight saving of the head-mounted device 300 can be achieved. Of course, a battery and structures, modules, circuits, etc. for image processing may also be integrated in the headset 300, as is well known to those skilled in the art.

In one embodiment, the laser 10 in the near-eye display optical system 100 may be disposed inside the legs such as the first leg 71 and the second leg 72, the transmission component 20 such as the planar optical waveguide 22 may be disposed on the legs such as the first leg 71 and the second leg 72, and the planar optical waveguide 22 may also be disposed as the legs such as the first leg 71 and the second leg 72, so that the legs such as the first leg 71 and the second leg 72 have the function of the planar optical waveguide 22, and the two-dimensional mems scanning mirror 30, the lens component 40, and the optical waveguide display 50 are disposed in the housing main body 61, avoiding the weight from being excessively concentrated on the housing main body 61. The volume of the housing main body 61 can be reduced.

Referring to fig. 7 and 11, fig. 11 discloses a schematic structural diagram of the neck wear apparatus 400 according to the embodiment of fig. 7. The neck-worn device 400 can be worn on the neck of a user as an external host. The problem of cable entanglement or cable cause the interference to the user is solved. The neck wear device 400 can include a connection lead 80 electrically connected at one end to the head wear device 300, such as an electrical connection portion 712, and a body 90 worn on the neck of the user and electrically connected to the other end of the connection lead 80.

The body 90 may be provided in an annular configuration, wrapped around the neck of the user, or the body 90 may be suspended from the neck of the user. For example, the body 90 may be a non-closed structure, such as a non-closed loop, which may be worn by spreading the body 90 around the user's neck, or removed by spreading the body 90 away from the user's neck.

In one embodiment, the connecting wires 80 may include a first connecting wire 81 and a second connecting wire 82. Wherein the first and

second connection wires

81 and 82 are electrically connected to the main body 90, respectively. The first connection wire 81 may be electrically connected with the electrical connection portion 712 of the first leg 71. The second connecting wire 82 may be electrically connected with the electrical connection portion 712 of the second leg 72.

The main body 90 may mount electronic components such as a main board, a battery, and a signal input device for realizing the functions of the near-eye display optical system 100. Of course, electronic components such as the motherboard, the battery, and the signal input device may be moved to the housing main body 61 and the support legs in some embodiments, which is not described in detail.

By adopting the scheme, the wearing experience of the ultra-light near-to-eye display device 200 is obtained. Therefore, the size of the optical machine and the size of the hardware can be greatly reduced on the premise of ensuring that the display effect is on a good level, and the near-to-eye display equipment 200 can obtain wearing experience close to common glasses. And the user experience is improved.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A near-eye display optical system, comprising:

a laser for emitting light having image information, the laser comprising:

a semiconductor stack; and

the transmission assembly is used for transmitting the light;

and the optical waveguide display piece comprises an optical coupling light-in part and an optical coupling light-out part, and is used for coupling the light rays penetrating through the lens component in the optical coupling light-in part and coupling the light rays out in the optical coupling light-out part.

2. The near-eye display optical system of claim 1, wherein the plurality of semiconductor laser sub-pixel cells comprises:

a red semiconductor laser sub-pixel unit for emitting red visible rays;

a green semiconductor laser sub-pixel unit for emitting green visible light;

a blue semiconductor laser sub-pixel unit for emitting blue visible rays; and

and the infrared semiconductor laser sub-pixel unit is used for emitting infrared rays.

3. The near-eye display optical system of claim 2 wherein the semiconductor stack comprises a GaAs substrate, the red, green, and blue semiconductor laser sub-pixel cells comprising one or more of InGaN, InGaAlP, AlGaAs active layers.

4. The near-eye display optical system of claim 2 wherein the semiconductor stack comprises a GaAs substrate, and the infrared semiconductor laser sub-pixel cell comprises one of an AlGaAs active layer and an InGaAs active layer.

5. The near-eye display optical system of claim 2 wherein the semiconductor stack comprises an InP substrate and the infrared semiconductor laser sub-pixel cell comprises an InGaAsP active layer.

6. The near-eye display optical system of claim 1 wherein the transmission assembly comprises:

a microlens array for transmitting the light emitted from the plurality of semiconductor laser sub-pixel units; and

the planar optical waveguide comprises an optical coupling-in part and an optical coupling-out part, and is used for coupling in the optical coupling-in part to transmit the light rays of the micro lens array and coupling out the light rays of the optical coupling-out part.

7. The near-eye display optical system of claim 6, wherein the planar light guide comprises:

a base body for providing the light incoupling part and the light outcoupling part; and

and the optical coupling section is arranged on the substrate and is connected with the optical coupling-in part and the optical coupling-out part so as to transmit the light to the optical coupling-out part from the optical coupling-in part.

8. The near-eye display optical system according to claim 7, wherein the light incoupling section includes:

the plurality of sub light-in coupling parts correspond to the plurality of semiconductor laser sub-pixel units one by one, so that each sub light-in coupling part couples light rays emitted by the corresponding semiconductor laser sub-pixel unit into the light coupling section, and the light coupling section is used for coupling the light rays emitted by the plurality of semiconductor laser sub-pixel units and coupling the light rays into a beam of light rays.

9. The near-eye display optical system according to claim 8, wherein the light out-coupling section includes:

and the plurality of sub light out-coupling parts are connected with the light coupling section to respectively couple out the light, and one of the plurality of sub light out-coupling parts is configured to couple out the light for detecting and correcting the light coupling effect.

10. The near-eye display optical system of claim 1, wherein the mems scanning mirror is a two-dimensional mems scanning mirror configured to be driven by a piezoelectric ceramic.

11. The near-eye display optical system of claim 1 wherein the lens assembly comprises at least one lens, the at least one lens being a unitary structure.

12. The near-to-eye display optical system of claim 1 wherein the optical waveguide display has a thickness of less than 0.3 mm.

13. A near-eye display apparatus comprising a head-mounted device, a neck-mounted device and the near-eye display optical system of any one of claims 1 to 12, wherein the near-eye display optical system is disposed on the head-mounted device, the neck-mounted device is configured to be electrically connected to the head-mounted device, the neck-mounted device is provided with a main board and a battery, the battery is configured to provide power for normal operation of the head-mounted device, and the main board is configured to receive data output by the head-mounted device and process the data for input to the head-mounted device.