CN115185087A

CN115185087A - Augmented reality device

Info

Publication number: CN115185087A
Application number: CN202210852719.2A
Authority: CN
Inventors: 申广
Original assignee: Shenzhen Yurunhe Display Technology Co ltd
Current assignee: Shenzhen Yurunhe Display Technology Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-10-14

Abstract

The application discloses augmented reality equipment, including projection arrangement and lens, projection arrangement is used for producing and treats the projection image, and the lens includes the lens body and sets up in the at least pinhole micro-structure of lens body, treats the transmission of projection image at the lens body, and the pinhole micro-structure has a total reflection surface, and under the wearing condition, the total reflection surface will treat the projection image reflection to people's eye through the total reflection that the refractive index difference of the both sides medium of total reflection surface formed. Augmented reality equipment in this application will treat the projected image reflection to people's eye through the pinhole micro-structure of locating the lens body, has increased the depth of field of augmented reality equipment to enlarged the observable image distance of augmented reality equipment, simultaneously, the total reflection surface of pinhole micro-structure will treat the projected image reflection to people's eye through the total reflection, has increased the light utilization ratio of pinhole micro-structure, thereby has improved the quality of augmented reality equipment projection to people's eye's virtual image.

Description

Augmented reality device

Technical Field

The application relates to the technical field of augmented reality, in particular to augmented reality equipment.

Background

An Augmented Reality (AR) technology is a technology for calculating the position and angle of an image emitted by a projection system in real time and adding a corresponding image, and aims to sleeve a virtual world on a screen in the real world, perform interaction, simulate and superimpose entity information (such as visual information, sound, touch and the like) which is difficult to experience in a time-space range of the real world through a computer and the like, and apply the virtual information to the real world. Since the augmented reality technology makes interaction between the virtual world and the real world possible, the augmented reality technology is widely used in augmented reality devices, such as AR glasses, which can project a virtual image into human eyes, and realize superposition of the virtual image and the real image in the human eyes.

Currently, an augmented reality device mainly includes a projection system for generating an image and an optical waveguide system for transmitting the image generated by the projection system to human eyes. The optical waveguide system is usually a combination of optical lenses or optical mirrors, and guides the optical signal emitted by the projection system to the human eye by refraction or reflection. However, the existing optical waveguide system has low transmission efficiency of optical signals, so that the quality of the projected image of the augmented reality device is difficult to meet the user requirement.

Disclosure of Invention

In order to solve the above problems in the prior art, the present application adopts a technical solution that: there is provided an augmented reality device comprising:

the projection device is used for generating an image to be projected;

the lens comprises a lens body and at least one pinhole microstructure arranged on the lens body, wherein the image to be projected is transmitted in the lens body, the pinhole microstructure is provided with a total reflection surface, and the total reflection surface reflects the image to be projected to human eyes through total reflection formed by the refractive index difference of media on two sides of the total reflection surface in a wearing state.

Optionally, the orthographic projection of the pinhole microstructures on a reference plane perpendicular to the optical axis direction of the human eye is smaller than the orthographic projection of the pupils of the human eye on the reference plane.

Optionally, the size of the orthographic projection of the pinhole microstructure on the reference plane is 10-1500 μm.

Optionally, the pinhole microstructures are formed on one major surface of the lens body.

Optionally, the pinhole microstructures are formed on a major surface of the lens body that is remote from the human eye in the as-worn state.

Optionally, the pinhole microstructures are arranged in a prism shape, and the main cross section of each pinhole microstructure is a triangle.

Optionally, the triangle is an isosceles right triangle, and the total reflection surface corresponds to an inclined side of the isosceles right triangle.

Optionally, the main surface of the lens body is a plane, and two legs of the isosceles right triangle are respectively parallel and perpendicular to the main surface of the lens body.

Optionally, the number of the pinhole microstructures is multiple, and the pinhole microstructures are arranged on the main surface of one side of the lens body in an array manner, wherein each pinhole microstructure provides a viewing angle range of 10 degrees to 25 degrees, and the viewing angle range of the array formed by the pinhole microstructures is 100 degrees to 150 degrees.

Optionally, the separation distance between adjacent pinhole microstructures is from 0.5mm to 2.5mm.

Optionally, the projection device is disposed at one end of the lens body, the augmented reality device further includes a concave mirror disposed at the other end of the lens body opposite to the projection device, the image to be projected which is emitted from the projection device is incident on the concave mirror and reflected by the concave mirror to the total reflection surface, and the curvature radius of the concave mirror is 20mm-100mm.

Compared with the prior art, the augmented reality equipment in this application will treat that the projected image reflects to people's eyes through the pinhole micro-structure of locating the lens body, has increased the depth of field of augmented reality equipment to enlarged the observable image distance of augmented reality equipment, simultaneously, the total reflection surface of pinhole micro-structure will treat that the projected image reflects to people's eyes through the total reflection of total reflection surface, has increased the light utilization ratio of pinhole micro-structure, thereby has improved the quality of augmented reality equipment projection to people's eyes's virtual image.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described 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 without creative efforts.

Fig. 1 is a schematic structural diagram of an augmented reality device according to an embodiment of the present application;

fig. 2 is a schematic optical path diagram of an augmented reality device provided in an embodiment of the present application when in use;

FIG. 3 is a schematic structural diagram of a lens provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of the lens of the embodiment of FIG. 3 from another perspective;

FIG. 5 is a schematic view of a lens structure according to another embodiment provided herein;

FIG. 6 is a schematic view of a lens structure according to another embodiment provided herein;

fig. 7 is a schematic diagram illustrating an implementation of an augmented reality device according to an embodiment of the present application;

fig. 8 is a schematic diagram of an implementation of an augmented reality device according to another embodiment of the present application;

fig. 9 is a schematic diagram of an implementation of an augmented reality device according to another embodiment of the present application;

fig. 10 is a schematic diagram of an implementation of an augmented reality device according to another embodiment of the present application;

fig. 11 is a schematic structural diagram of an augmented reality system according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference in the application 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.

The terms "first", "second", etc. in this application are used to distinguish between different objects and not to describe a particular order. As used herein, "plurality" means at least two, e.g., two, three, etc., unless expressly specified to be limiting.

It is noted that the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

The present application provides an Augmented Reality device, namely an AR (Augmented Reality) device. The augmented reality device processes the image of the graph through computer programming. The augmented reality device can calculate the position and angle of the camera image in real time through the photographing device, match virtual images such as corresponding images, videos and 3D models stored in the database, display the virtual images in the real world on the screen of the augmented reality device, and interact with a user. Augmented reality devices provided herein include, but are not limited to, wearing helmets, vehicle windows, wearable glasses, and the like. The wearable eyeglasses will be described below as an example.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an augmented reality device 10 according to an embodiment of the present application.

In some embodiments, the augmented reality apparatus 10 includes at least one projection device 100 and at least one lens 200. The projection apparatus 100 is used for generating an image to be projected. The lens 200 includes at least one lens body 210 and at least one pinhole microstructure 220. The image to be projected may be a virtual image for playing an augmented reality effect. The projection direction of the projection apparatus 100 matches with the pinhole microstructure 220, so that the image to be projected generated by the projection apparatus 100 can be transmitted in the lens body 210 and reflected to human eyes through the pinhole microstructure 220.

Optionally, the lens body 210 is a spectacle lens with no power or a spectacle lens with a certain refractive power. The refractive power of the glasses lenses can be correspondingly set according to the retinal distortion degree of a user so as to meet the requirement of correcting myopia or hypermetropia of the user.

Optionally, the lens body 210 is made of high-reflectivity resin or quartz glass. For example, the lens body 210 may be a resin lens of AR glasses, or a windshield on a helmet made of quartz glass, an automotive front windshield, or the like.

Alternatively, the pinhole microstructures 220 may be embedded as separate structures on one major surface of the lens body 210; alternatively, the pinhole microstructures 220 may be directly formed on the main surface of the lens body 210 by engraving, that is, the pinhole microstructures 220 are recessed from the main surface of the lens body 210.

The main surface of the lens body 210 is a surface of the lens body 210 close to or far away from a human eye when the augmented reality device 10 is in a wearing state. Preferably, the pinhole microstructures 220 are formed on the major surface of the lens body 210 that faces away from the human eye in the worn state.

In the embodiment of the present application, the augmented reality device 10 sets the pinhole microstructure 220 on the main surface of one side of the lens body 210 through processing manners such as embedding and/or carving, and the "pinhole effect" is utilized to expand the depth of field, thereby solving the problem that the existing AR device can only observe a clear AR image at a fixed distance, and achieving the effect of forming a clear image of an image to be projected in the retina regardless of the focal length.

Optionally, the number of the pinhole microstructures 220 is plural, and the plurality of pinhole microstructures 220 are arranged on one main surface of the lens body 210 in an array manner. In particular, the pinhole microstructures 220 may be arranged longitudinally and/or laterally on one major surface of the lens body 210.

Wherein each pinhole microstructure 220 provides a viewing angle in a range of 10 degrees to 25 degrees, such as 13 degrees, 15 degrees, 18 degrees, 21 degrees, etc. The viewing angle of the array formed by the plurality of pinhole microstructures 220 ranges from 100 degrees to 150 degrees, such as 110 degrees, 120 degrees, 130 degrees, 140 degrees, and the like.

The viewing angle range provided by each pinhole microstructure 220 is defined as an included angle formed by light rays extracted from two ends (e.g., upper and lower ends or left and right ends) of the pinhole microstructure 220 at the optical center of human eyes. The horizontal viewing angle or the vertical viewing angle provided by the plurality of pinhole microstructures 220 arranged in the array can be defined as the included angle formed by the light extracted from the two ends of the pinhole microstructures 220 at the two sides (such as the left side and the right side or the upper side and the lower side) of the edge of the array at the optical center of the human eye. Taking the size of a single pinhole microstructure 220 as 0.1mm-1.5mm as an example, it can provide a viewing angle range of 10 degrees-25 degrees. The array of the plurality of pinhole microstructures 220 may provide a viewing angle range of 100-150 degrees depending on the maximum viewing angle observed by the human eye. Wherein the maximum viewing angle that a single human eye can provide is 156 degrees.

In other words, in the augmented reality device 10 provided in this embodiment, the longitudinal viewing angle provided by one pinhole microstructure 220 may be 10 degrees to 25 degrees, and the longitudinal viewing angle provided by the array formed by the plurality of pinhole microstructures 220 may be 100 degrees to 150 degrees; the lateral viewing angle provided by one pinhole microstructure 220 is 10-25 degrees, and the lateral viewing angle provided by an array formed by a plurality of pinhole microstructures 220 can be 100-150 degrees, so as to meet the use requirement of a user.

Further, referring to fig. 2, fig. 2 is a schematic optical path diagram of an augmented reality device 10 provided in an embodiment of the present application.

In some embodiments, the real scene image is projected onto the retina of the human eye through optical path a; the image to be projected is transmitted to the pinhole micro-structure 220 through the lens body 210 and then further reflected to human eyes, so that the virtual scene image is projected onto the retina of the human eyes through the light path B. The positions of the real scene image and the virtual scene image on the retinas of human eyes are overlapped, so that a user can observe the real scene and the virtual scene at the same time.

Optionally, the orthographic projection of the pinhole microstructures 220 on a reference plane perpendicular to the optical axis direction of the human eye is smaller than the orthographic projection of the pupil of the human eye on the reference plane. In other words, on the reference plane, the area of the pinhole microstructure 220 is smaller than the area of the pupil of the human eye, so that the human eye can not observe the pinhole microstructure 220 while watching the virtual image projected by the augmented reality device 10, thereby avoiding affecting the user to watch the real scene. Specifically, the size of the orthographic projection of the pinhole microstructures 220 on a reference plane perpendicular to the direction of the optical axis of the human eye is 10-1500 μm.

Alternatively, the augmented reality device 10 may take the form of head-up displays (HUDs) that may be used on the helmet of the driver so that the driver may view various information while viewing terrain or objects. The augmented reality device 10 may also be applied to a vehicle window to display information such as speed, or to smart glasses to display virtual images, etc. When the user wears the augmented reality device 10, the user can visually and simultaneously feel the overlapping effect of the real image and the virtual image, so as to achieve the purpose of augmented reality.

The applicant has found that existing AR devices with pinhole structures also suffer from diffraction which causes light passing through the pinhole structure to be diffused and difficult to form a sharp image. The sharpness of the image formed on the retina and the diffraction effects may both increase as the pinhole becomes smaller, with certain limitations. The present embodiment solves the above problems with pinhole microstructures 220. Specifically, referring to fig. 3 and fig. 4 in combination, fig. 3 is a schematic structural diagram of a lens 200 according to an embodiment of the present application, and fig. 4 is a schematic structural diagram of the lens 200 according to the embodiment of fig. 3 at another viewing angle.

In some embodiments, the pinhole microstructure 220 has a total reflection surface 2201, and in a wearing state, the total reflection surface 2201 can reflect the image to be projected to human eyes through total reflection formed by the refractive index difference of media on two sides of the total reflection surface 2201. That is, one side medium of the total reflection surface 2201 is an optically dense medium, the other side medium is an optically sparse medium, and a projected image forms total reflection when projected onto the total reflection surface 2201 and is further reflected to human eyes.

Optionally, the pinhole microstructures 220 are arranged in a prism shape, and the main cross section of the pinhole microstructures 220 is a triangle. Specifically, the pinhole microstructure 220 may be a total reflection prism having a total reflection surface 2201, and the total reflection prism may be embedded on one main surface of the lens body 210, so that the total reflection surface 2201 can reflect the image to be projected to human eyes. In addition, the pinhole micro-structure 220 can also be formed on the lens body 210 by processing methods such as engraving, and please refer to fig. 5, where fig. 5 is a schematic structural diagram of another embodiment of the lens 200 provided in the present application.

Alternatively, the pinhole microstructure 220 may also be a prism-shaped structure opened on one main surface of the lens body 210, so as to form a total reflection surface 2201 on the surface of the lens body 210 opened with the pinhole microstructure 220.

Preferably, the major surface of the lens body 210 is planar. The main cross section of the pinhole micro-structure 220 is an isosceles right triangle. The total reflection surface 2201 corresponds to the inclined side of an isosceles triangle, and two right-angle sides of the isosceles triangle are respectively parallel and perpendicular to the main surface of the lens body 210.

Of course, in some embodiments, the main cross section of the pinhole microstructure 220 may also be a wedge shape or other shapes capable of forming the total reflection surface 2201, which is not limited in this respect.

In some embodiments, pinhole microstructures 220 are adjustable in size. The pinhole microstructures 220 may increase the associated depth of field by increasing the size. In particular, in some augmented reality devices 10 adapted to operate in low light conditions, the pinhole microstructures 220 may be adjusted to a larger size. For example, in the augmented reality device 10 as night vision goggles, the size of the pinhole micro-structure 220 perpendicular to the optical axis of the human eye can be designed to be about 8 mm. In other augmented reality devices 10 suitable for operation in high light conditions, such as sunglasses, the pinhole microstructures 220 may be adjusted to a smaller size, such as less than 2mm. By adjusting the size of pinhole microstructures 220, augmented reality device 10 can control the amount of light entering a human eye to prevent the pupil of the human eye from being forced to contract to a size smaller than pinhole microstructures 220 while preventing the field of view from being excessively reduced.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a lens 200 according to another embodiment of the present disclosure.

In some embodiments, the plurality of pinhole microstructures 220 are arranged in a one-dimensional or two-dimensional array structure on the lens body 210, and the plurality of pinhole microstructures 220 are arranged at intervals to ensure that each pinhole microstructure 220 can observe a corresponding virtual image, and the virtual images observed by each pinhole microstructure 220 are non-overlapping, thereby ensuring that the depth of field is increased.

Optionally, adjacent pinhole microstructures 220 are spaced apart a distance of 0.5mm to 2.5mm, e.g., 1.0mm, 1.5mm, 2.0mm, etc.

Referring to fig. 7 and fig. 8 in combination, fig. 7 is a schematic diagram of an implementation of an augmented reality device 10 according to an embodiment of the present application. Fig. 8 is a schematic diagram of an implementation of the augmented reality device 10 according to another embodiment of the present application.

In some embodiments, the projection apparatus 100 projects the image to be projected into the lens 200, and the image to be projected is transmitted in the lens body 210 and reflected to the human eye through the total reflection surface 2201. The projection apparatus 100 may be disposed adjacent to a side surface of the lens body 210, so as to project an image to be projected onto the pinhole microstructures 220 disposed on the main surface of the lens body 210, and the pinhole microstructures 220 may reflect the image to be projected onto human eyes along an optical axis direction of the human eyes on a main cross section thereof.

Optionally, the lens 200 comprises a plurality of pinhole microstructures 220, the number of pinhole microstructures 220 matching the number of projection devices 100. Specifically, one projection apparatus 100 may be matched with one pinhole microstructure 220; alternatively, one projection apparatus 100 may be configured to match with the multi-pinhole microstructure 220, wherein the multi-pinhole microstructure 220 is aligned with the reflection direction of the image to be projected.

Optionally, the augmented reality device 10 includes a plurality of projection apparatuses 100. The projection devices 100 may be disposed at different positions near the lens 200, and each projection device 100 corresponds to one or a group of pinhole microstructures 220. Multiple projection devices 100 may emit image source light waves to corresponding pinhole microstructures 220. The light wave of the image source is a surface light source, and can generate a virtual image of a plane or a curved surface.

Referring to fig. 9, fig. 9 is a schematic diagram of an implementation manner of an augmented reality device 10 according to another embodiment of the present application.

In some embodiments, the lens 200 includes a lens body 210 and at least one pinhole microstructure 220 disposed on a major surface of the lens body 210. The main surface of the lens body 210 is a curved surface, and the pinhole microstructures 220 are arranged according to the radius of curvature of the main surface of the lens body 210.

Specifically, the pinhole micro-structure 220 has a triangular main cross-section, wherein the triangular main cross-section has a first side 2202 corresponding to the total reflection surface 2201, and a second side 2203 connected to the first side 2202, and the second side 2203 is perpendicular to a tangent plane of the main surface of the lens body 210. The angle between the first edge 2202 and the second edge 2203 is 45 degrees.

Alternatively, a plurality of pinhole microstructures 220 arranged according to the curvature radius of the main surface of the lens body 210 may be correspondingly matched with one projection device 100 or a plurality of projection devices 100, and a plurality of projection devices 100 may be arranged on one or more sides of the lens body 210.

Referring to fig. 10, fig. 10 is a schematic diagram of an implementation of an augmented reality device 10 according to another embodiment of the present application.

In some embodiments, the augmented reality device 10 further comprises a concave mirror 300. The projection apparatus 100 is disposed at one end of the lens body 210, and the concave reflector 300 is disposed at the other end of the lens body 210 opposite to the projection apparatus 100. The image to be projected from the projection apparatus 100 enters the concave mirror 300, and is reflected by the concave mirror 300 to the total reflection surface 2201, and further reflected to the human eye, so as to increase the optical path of the optical signal projected by the projection apparatus 100 to the human eye, and the virtual image can be clearly focused on the retina of the human eye.

Optionally, the radius of curvature of the concave mirror 300 is 20mm-100mm. Such as 30mm, 50mm, 70mm, 90mm, etc.

In the embodiment of the present application, the augmented reality device 10 reflects the image to be projected to the human eye through the total reflection surface 2201 of the pinhole microstructure 220, and eliminates the technical problem of unclear imaging of the pinhole structure caused by the diffraction phenomenon by using the total reflection effect on the light. Meanwhile, the pinhole microstructure 220 having the total reflection surface 2201 improves the light utilization rate of the augmented reality device 10, so that the light loss of the virtual image projected by the augmented reality device 10 is minimized, and the user can clearly see the virtual image while observing the real world.

In addition, the augmented reality device 10 only uses the lens body 210 of the lens 200 and the pinhole micro-structure 220 disposed on the main surface of the lens body 210 to realize the function of transmitting the image source light wave sent by the augmented reality device 10 to the human eyes, so that the redundant structure of the augmented reality device 10 is reduced, the size of the augmented reality device 10 is further reduced, and the burden of wearing by the user is reduced. On the other hand, the pinhole microstructures 220 may be formed by embedding a structural member such as a total reflection prism on the main surface of the lens body 210, or by engraving on the main surface of the lens body 210, and have the advantages of low processing difficulty, high light transmittance, and high reflectivity.

Referring to fig. 11, fig. 11 is a schematic structural diagram of an augmented reality system 1000 according to an embodiment of the present application.

In some embodiments, the augmented reality device 10 further includes a frame 400. The frame 400 is used to fix other structures of the augmented reality device 10, such as the projection apparatus 100 and the lens 200. The frame device 400 may be a frame of an AR glasses, a fixed bracket in an AR helmet, or a fixed structure in a vehicle such as a vehicle or an aircraft, and is not limited herein.

Optionally, the frame 400 is further fixedly provided with an image capturing device 500 and a wireless communication device 600. Wherein the image capturing device 500 is configured to capture images of a scene in real time, and the wireless communication device 600 is configured to receive or transmit image information to a background.

In some embodiments, the augmented reality system 1000 includes the augmented reality device 10 described above, and a server 20. Wherein the server 20 is communicatively connected to the augmented reality device 10.

Optionally, the image capturing device 500 transmits the captured scene image to the server 20 for image processing in real time through the wireless communication device 600. The server 20 determines object information in the image according to the scene image by using a training algorithm, then determines a virtual image corresponding to the scene image according to the object information, and finally, the server 20 returns the virtual image to the wireless communication device 600, so that the projection device 100 in the augmented reality device 10 receives the virtual image transmitted by the wireless communication device 600, and then projects the virtual image into the lens 200.

Optionally, the augmented reality system 1000 further comprises a user terminal 30. The server 20 may send the determined virtual image to the user terminal 30, so that the user can modify, calibrate, etc. the virtual image through the user terminal 30. The user terminal 30 may be a mobile terminal such as a video camera and recorder, a mobile phone, a smart phone, a notebook computer, a Personal Digital Assistant (PDA), a tablet computer (PAD), or a fixed terminal such as a Digital broadcast transmitter, a Digital TV, a desktop computer, and a server.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the above-described units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when products of the present application are used, and are used only for convenience in describing embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be constructed in specific orientations, and be operated, and thus should not be construed as limiting the present application.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

The above description is only an embodiment of the present application, and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes performed according to the contents of the specification and the drawings, or applied directly or indirectly to other related technical fields, are all included in the scope of the present application.

Claims

1. An augmented reality device, characterized in that the augmented reality device comprises:

the projection device is used for generating an image to be projected;

2. Augmented reality device according to claim 1, wherein the orthographic projection of the pinhole microstructure on a reference plane perpendicular to the direction of the optical axis of the human eye is smaller than the orthographic projection of the pupil of the human eye on the reference plane.

3. Augmented reality device according to claim 2, wherein the size of the orthographic projection of the pinhole microstructure on the reference plane is 10-1500 μ ι η.

4. Augmented reality device according to claim 1, wherein the pinhole microstructures are formed on one major surface of the lens body.

5. Augmented reality apparatus according to claim 4, wherein the pinhole microstructures are formed on a major surface of the lens body which is remote from the human eye in the as-worn state.

6. The augmented reality device of claim 1, wherein the pinhole microstructures are arranged in a prism shape, and the pinhole microstructures have a triangular main cross section.

7. The augmented reality device of claim 6, wherein the triangle is an isosceles right triangle, and the total reflection surface corresponds to a slope side of the isosceles right triangle.

8. Augmented reality device according to claim 7, wherein the main surface of the lens body is a plane, the two legs of the isosceles right triangle being parallel and perpendicular to the main surface of the lens body, respectively.

9. The augmented reality device of claim 1, wherein the number of the pinhole microstructures is multiple, and the pinhole microstructures are arranged on one main surface of the lens body in an array manner, wherein each pinhole microstructure provides a viewing angle range of 10 degrees to 25 degrees, and the array formed by the pinhole microstructures has a viewing angle range of 100 degrees to 150 degrees.

10. The augmented reality device of claim 9, wherein the distance between adjacent pinhole microstructures is 0.5mm-2.5mm.

11. The augmented reality device of claim 1, wherein the projection device is disposed at one end of the lens body, the augmented reality device further comprises a concave mirror disposed at the other end of the lens body opposite to the projection device, the image to be projected which is emitted from the projection device is incident on the concave mirror and reflected by the concave mirror to the total reflection surface, and a radius of curvature of the concave mirror is 20mm-100mm.