WO2021109935A1

WO2021109935A1 - Near-to-eye display optical system

Info

Publication number: WO2021109935A1
Application number: PCT/CN2020/132189
Authority: WO
Inventors: 杨建明
Original assignee: 光感(上海)科技有限公司
Priority date: 2019-12-05
Filing date: 2020-11-27
Publication date: 2021-06-10
Also published as: CN110780447A; CN111399228A

Abstract

A near-to-eye display optical system, which relates to the field of optical engineering, and solves the problems of existing AR glasses of a small field-of-view, a small exit pupil diameter, and a bulky system. The near-to-eye display optical system comprises a display system and a spherical mirror; the spherical mirror has two surfaces, a first surface is a partially reflective surface, and a second surface is a transmissive surface; the display system is placed in front of the pupils, the display system is located on the focal plane of the spherical mirror, and the spherical centers of both the display system and the spherical mirror are located within a range of 1 cm from the pupil centers. The display system comprises linear array display pixels bonded onto a transparent substrate, a substrate extension part on the outer edge of the transparent substrate, an outer frame, a driving system and an electronic control system; and the driving system comprises a driven gear, a driving gear, a rotating bearing and a motor. The present application can achieve a large field-of-view, a large exit pupil diameter and a high resolution while keeping the glasses light, simple to make, low cost, easy to implement, and having fixed components, a stable structure, and no stray light interference.

Description

A near-eye display optical system

This application is required to be submitted to the Chinese Patent Office on December 5, 2019, with the application number of 201911231351.2, and the title of the invention as "An Optical System for Augmented Reality Glasses"; on May 8, 2020, to the China Patent Office with the application number The priority of the Chinese patent application is 202010381863.3 and the invention title is "a near-eye display optical system"; the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of optical engineering, in particular to a near-eye display optical system.

Background technique

Near-eye display systems can provide people with virtual images, the most important of which is augmented reality (AR), a new technology that "seamlessly" integrates real world information and virtual world information. Augmented reality glasses are the main implementation of AR. It can provide users with large screens and 3D effects. It has the potential to replace existing display and computing terminals such as mobile phones, computers and TVs, and has a very wide range of application prospects.

At present, there are a variety of AR technologies, including off-axis catadioptric structures, free-form surface prisms, waveguide glasses, etc. Due to the constraints of Lagrangian invariants, it is difficult to solve the problem of large field of view, large exit pupil diameter and volume. The contradiction between. The off-axis folding structure is generally helmet-shaped and relatively heavy. The free-form surface prism has a relatively small field of view and exit pupil diameter, and the system is thick and heavy. Although the waveguide AR can expand the exit pupil diameter, it is difficult to enlarge the field of view, and the energy utilization rate is very low. None of the existing technologies can resolve the contradiction between optical performance and system volume and quality.

Microsoft disclosed a solution based on rotating display (WO2019059991A1). The difference is that this solution uses a lens array or lens as a device to focus the beam. The lens or lens array is between the rotating display and the pupil, and there is no symmetry in different fields of view. The system is still cumbersome.

Summary of the invention

The present application provides a near-eye display optical system in order to solve the problems of the existing AR glasses that the field of view is small, the exit pupil diameter is small, and the system is bulky.

In order to achieve the above objective, the technical solution adopted by this application is: a near-eye display optical system, in which a display system is placed in front of the pupil at a reference position, and a spherical reflective lens is placed in front of the display system;

The display pixels in the display system are distributed on a convex surface, and the display pixels in the display system emit light toward the spherical reflective lens, and the spherical reflective lens reflects the light to the pupil at the reference position; using the persistence effect of human vision, the display system passes on The image is generated by the light in motion, and the image is magnified and reflected to the pupil at the reference position through the spherical reflective lens.

A near-eye display optical system, comprising a display system and a spherical reflective lens; the spherical reflective lens has two surfaces, the first surface is a partially reflective surface, which is used to amplify and reflect an image on the display system to the reference position Pupil, the second surface is the transmission surface, used to correct the ambient light to adapt to the wearer's degree, the position of the partial reflection surface and the transmission surface can be interchanged;

A display system is placed in front of the pupil at the reference position, and a spherical reflective lens is arranged in front of the display system. The display system is composed of a hole-like structure array distributed on a spherical transparent substrate and an area outside the array;

The area outside the array is a display pixel distribution area, and the light emitted by the display pixel is reflected by the spherical reflective lens and enters the pupil at the reference position through the hole-like structure array.

A near-eye display optical system, which is characterized in that it includes a display system and a spherical reflective lens;

Place the display system in front of the pupil at the reference position, and place the reflector lens in front of the display system;

The display system is composed of a transparent display screen alone, or a combination of a dynamic light-shielding layer and a transparent display screen. The dynamic light-shielding layer is located on the side of the human eye and is configured to block the transparent display screen directly to the side of the human eye. Light, and transmits the light reflected by the spherical reflective lens.

The spherical reflective lens has two surfaces: the first surface is a partially reflective surface, which is used to amplify and reflect the image on the display system to the reference position of the pupil; the second surface is a transmissive surface, which is used to correct the ambient light to adapt to the The degree of the wearer; the position of the partially reflective surface and the transmissive surface can be interchanged.

Compared with the prior art, the near-eye display optical system provided by this application has at least the following beneficial effects: the near-eye display optical system described in this application can achieve a large field of view, a large exit pupil diameter and a high-resolution At the same time keep the glasses light.

The near-eye display system described in this application can achieve a field of view angle greater than 100°, the exit pupil diameter can be greater than 8mm, the resolution can reach 2um pixels, and the resolution of different fields of view remains the same. At the same time, the overall size of the system is small and the appearance is similar to glasses .

The near-eye display optical system described in the present application adopts a linear array display pixel rotation mode, which is simple to manufacture, low in cost, and easy to implement.

The near-eye display optical system described in the present application adopts a hole-shaped display screen, and has the advantage that it is a fixed component, has a stable structure, and does not interfere with stray light.

The near-eye display optical system described in the present application adopts a combination of a transparent display screen and a dynamic shading screen. The advantage is that it is a fixed component, has a stable structure, and is relatively easy to manufacture.

Description of the drawings

FIG. 1 is a schematic diagram of the overall structure of a near-eye display optical system described in this application;

2 is a schematic diagram of a modulation function curve of a near-eye display optical system described in this application;

Figure 3 is a schematic diagram of a rotating linear array display system with a protective layer;

Figure 4 is a schematic diagram of the structure of a display system with a line array of pixels;

Figure 5 is a schematic diagram of the structure of a cross-line array pixel display system;

Figure 6 is a schematic diagram of the structure of the M-shaped linear array pixel display system;

FIG. 7 is a structural diagram of a driving system in a near-eye display optical system described in this application; among them, FIG. 7a is a schematic diagram of a structure driven by a gear to rotate; FIG. 7b is a schematic diagram of a rotating bearing structure;

8 is a schematic diagram of gear driving when the driving gear in the near-eye display optical system described in this application is in the middle position;

9 is a schematic diagram of the positional relationship between the stator coil and the permanent magnet in the near-eye display optical system described in this application;

10 is a schematic structural diagram of the rotation of a magnetic levitation coil in a near-eye display optical system described in this application;

Fig. 11 is a schematic diagram of a display system in a near-eye display optical system with another structure of the application; among them, Fig. 11a is a schematic structural diagram of a hole-shaped display system; Fig. 11b is a schematic structural diagram of a square display system; Fig. 11c is a hexagonal display system Schematic diagram of the structure of the shape display system;

FIG. 12 is a schematic diagram of another near-eye display optical system using a transparent display screen and a dynamic light shielding layer in this application.

In the figure: 1. Display system, 1-1, transparent substrate, 1-2, base extension, 1-3, outer frame, 1-4, line array display pixels, 1-5, electronic control system, 1- 6. Control connection line, 1-7, driven gear, 1-8, driving gear, 1-9, rotating bearing, 1-9-1, rotating part of rotating bearing, 1-9-2, fixed part of rotating bearing, 1-9-3, bearing ball, 1-10, drive motor, 1-11, permanent magnet, 1-12a, stator coil, 1-12b, magnetic levitation coil, 1-13, circular hole array, 1-14, circle Area outside the hole array, 1-15, square hole array, 1-16, area outside the circular hole array, 1-17, polygon hole array, 1-18, area outside the polygon hole array, 1-19, dynamic shading Layer, 1-19-1, shading area, 1-19-2, transparent area, 1-20, transparent display screen, 2, spherical reflective lens, 2-1, partially reflective surface, 2-2, transmissive surface, 2 -3, mirror frame, 3, pupil at reference position, 4, ambient light, 5, light emitted by the display system, 6, overlapping light from the ambient light and the display system, 7, transparent thin layer, 8, connecting piece, 9, mirror leg.

Detailed ways

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

It should be noted that when a component is said to be "connected" with another component, it can be directly connected to the other component or there may also be a central component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terminology used in the specification of the application herein is only for the purpose of describing specific embodiments, and is not intended to limit the application.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT One. This embodiment will be described with reference to Figs. 1-10. A near-eye display optical system includes a display system 1 and a spherical mirror 2; the display system 1 is placed in front of the pupil 3 at the reference position, and the spherical surface is placed in front of the display system 1 Reflective lens 2; the display pixels in the display system 1 are distributed on a convex surface, the display pixels in the display system 1 emit light to the spherical reflective lens 2, and the spherical reflective lens 2 reflects the light to the reference position of the pupil 3; using the human eye Persistence of vision effect, the display system 1 generates an image by emitting light in motion, and magnifies the image through a spherical reflective lens 2 and reflects it to the pupil 3 at the reference position. The spherical reflective lens 2 has two surfaces. The first surface is a partially reflective surface 2-1, which is used to enlarge the image on the display system 1 and place it in the visible range of the human eye. The reflectivity can be between 1% and 99%. %, the second surface is the transmission surface 2-2, used to correct the ambient light to adapt to the wearer’s degree.

The positions of the reflective surface and the transmissive surface of the spherical reflective lens 2 can be interchanged. The radius of the spherical surface of the reflective surface is within the range of 10mm-90mm, and the radius error is less than 45% of the radius value;

The spherical radius of the display pixel distribution in the display system 1 is within the range of 5mm-45mm, and the radius error of the display pixel distribution is less than 45% of the spherical radius value; the reference position of the pupil 3 is placed in front of the display system 1, and the display system 1 is set in front of it Spherical reflective lens 2, the display system 1 is located on the focal plane of the spherical reflective lens 2, the sphere centers of the display system 1 and the spherical reflective lens 2 are both near the center of the pupil 3 at the reference position, and the range is within 1 cm;

As an example, in this embodiment, the entrance pupil size of the system is set to 8mm, and the field of view is 90°. The following table lists one of the possible optical parameters:

The transfer function value of the system obtained from the above example is shown in Fig. 2, and the transfer function value can be greater than 0.2 at 100 lp/mm. Therefore, this embodiment can obtain a very high resolution. The above data proves that the optical performance of this system is extremely superior, mainly because it maintains the highest symmetry. The Lagrangian invariant does not change with the increase of the field of view, which completely eliminates the effect of increasing the field of view on the optical system. The burden can reach a field of view above 100°.

This embodiment will be described with reference to FIG. 3. In order to prevent other objects or human bodies from touching the rotating display system, it is better to install a protective transparent thin layer 7 on the side close to the human eye.

In this embodiment, the display system 1 includes a driving motor that rotates and an electronic control system that controls its display. The electronic control system loads corresponding image information and drives the display pixels to emit light according to the moving position of the display system 1.

The present embodiment will be described with reference to FIGS. 4 to 7. The display system 1 is produced by rotating linear array display pixels 1-4, and the display system 1 includes pasting on a spherical transparent substrate 1-1 or a rigid linear substrate The linear array display pixels 1-4, the base extension 1-2 on the outer edge of the transparent base, the outer frame 1-3, the driving system and the electronic control system 1-5; the driving system includes driven gears 1-7, The driving gear 1-8, the rotating bearing 1-9 and the motor 1-10; an electronic control system 1-5 and a control connection line 1-6 can be arranged on the base extension 1-2. The electronic control system 1-5 is connected to the linear array display pixel 1-4 through a control connection line.

The outer edge of the base extension portion 1-2 is in contact with the inner edge of the rotary bearing 1-9, and the base extension portion 1-2 protrudes from the rotary bearing 1-9 by a certain length, such as 1-10mm, and the driven gear 1 is installed in the protruding portion -7. The outer edge of the rotary bearing 1-9 is in contact with the inner side of the outer frame 1-3, and the outer side of the outer frame 1-3 is rigidly connected with the spherical reflective lens 2 through the connector 8; the motor 1-10 is fixed on the outer frame 1-3 near the temple Position; the front end of the motor 1-10 is connected to the drive gear 1-8;

The rotation speed of the linear array display pixels 1-4 is controlled by the motor 1-10, and the rotation speed can be monitored in real time through the drive system, and the input image can be adjusted to finally display a coherent picture.

The width of the linear array display pixels 1-4 needs to be smaller than the diameter of the pupil of the human eye, and it can be composed of a single row or multiple rows of linear micro-pixel dot arrays. The light emitted by the linear array display pixels 1-4 passes through the partially reflective surface 2- 1 Reflection enters the human eye for imaging. Since the width of the linear array display pixels 1-4 is smaller than the pupil, the reflected light can enter the human eye for imaging. Obviously, the smaller the width of the linear array display pixels 1-4, the more light enters the human eye. Due to the persistence of the human eye, when more than 24 frames are displayed per second, the human eye will perceive the image to be coherent. Of course, the more images displayed per second, the more coherent the human eye will feel. In this method, the speed of rotation determines how many frames are displayed per second. As shown in Figure 4, if there is only one linear array displaying pixels and it rotates 12 times per second, the human eye will feel that the image is continuous. To reach 60Hz, the rotation speed is 30 times per second. Obviously, increasing the number of linear array display pixels can further reduce the required rotation speed. As shown in Figure 5, when there are two linear array display pixels arranged in a cross, the continuous rotation speed is 6 revolutions per second, and the rotation speed reaching 60Hz is 15 revolutions per second. As shown in Figure 6, when there are 4 linear array display pixels arranged in a monzi-shaped arrangement, the speed to achieve a continuous display is 3 revolutions per second, and the speed to reach 60 Hz is 7.5 revolutions per second.

This embodiment will be described with reference to FIG. 8. In this embodiment, in order to reduce the overall weight of the system, the driving gears 1-8 can be placed in the middle of the two display systems to drive the two display systems to rotate at the same time.

This embodiment will be described with reference to Figure 9. In order to make the structure more compact, the outer edge of the system base extension 1-2 is shown, and the protruding part of the rotating bearing 1-9 is provided with permanent magnets 1-11, and the outer frame 1-3 is arranged The stator coil 1-12a is used as a stator and does not require an additional motor drive. After the coil is energized, it forms a motor system with the arranged permanent magnets 1-11, which can rotate by itself.

This embodiment will be described with reference to Fig. 10. In order to reduce friction and realize non-contact rotation, a magnetic suspension coil 1-12b is arranged on the outer frame 1-3 of the display system, and there is a space between the outer frame of the bearing and the inner side of the outer frame 1-3 of the display system. In the gap, the magnetic levitation coil 1-12b and the stator coil 1-12a can be arranged crosswise in the outer frame 1-3. After the magnetic levitation coil 1-12b is energized, the rotating part (display system 1) can be controlled to float in the air and rotate. The function of the rotating bearing is After power off, avoid sliding friction between the display system and the outer frame to protect the display system.

In this embodiment, the connecting member 8 may be a connecting member with a curvature made of metal or non-metallic materials. Since the base extension 1-2 has no optical function, the shape is relatively flexible. In this embodiment, through the shape design of the outer frame, the outer frame 1-3 and the mirror frame 2-3 can be designed as a whole.

In this embodiment, the power supply mode of the electronic control system 1-5 can be: the method of using motor brushes and the power supply integrated inside the electronic control system or between the rotating part and the mirror frame, through the wireless electromagnetic induction method, to the control system powered by.

Detailed description of the second embodiment. This embodiment will be described with reference to Figs. 1 and 11. This embodiment is another embodiment of a near-eye display optical system described in the first embodiment: including a display system 1 and a spherical reflective lens 2;

The spherical reflective lens 2 has two surfaces. The first surface is a partially reflective surface 2-1, which is used to enlarge the image on the display system 1 and place it in the visible range of the human eye. The reflectivity can be between 1% and 99%. %, the second surface is the transmission surface 2-2, used to correct the ambient light to adapt to the wearer’s degree. The position of the partially reflective surface and the transmissive surface can be interchanged;

A display system 1 is placed in front of the pupil 3 at the reference position, and a spherical reflective lens 2 is arranged in front of the display system 1. The display system 1 is located on the focal plane of the spherical reflective lens 2, and the sphere centers of the display system 1 and the spherical reflective lens 2 are both reference positions Near the center of the pupil 3, the range is within 1 cm; the display system 1 is composed of a hole-like structure array distributed on a spherical transparent substrate and an outer area of the array; the outer area of the array is the display pixel distribution area, and the light emitted by the display pixel passes through After the spherical reflective lens 2 reflects, it enters the pupil 3 at the reference position through the hole-like structure array. The hole-like structure array and the outer area of the array are interchangeable, that is, the hole-like structure array is used as the pixel distribution area, and the outer area of the array is used as the light-transmitting area.

The present embodiment will be described with reference to Figure 11a. The display system 1 is composed of an array of circular holes 1-13 distributed on a spherical surface and an area 1-14 outside the circular hole array. The circular hole array can transmit light and environment reflected by a mirror. Light 4, which can be air, transparent glass or resin, or a transparent optical element that can reduce the diffraction effect. The area outside the array is the display pixel distribution area. The light emitted by the display pixel is reflected by the mirror and enters the human eye through the hole array. Obviously, the hole array can also be a pixel distribution area, and the outside of the array is a light-transmitting area. The pixel area is opaque, and light cannot directly enter the human eye through the pixel to eliminate the interference of stray light.

This embodiment will be described with reference to Figure 11b. The display system 1 is composed of an array of square holes 1-15 distributed on a spherical surface and an area 1-16 outside the square hole array. The square hole array can transmit light and environment reflected by a mirror. Light, which can be air, a transparent substance, or a transparent optical element that can reduce the diffraction effect. The area outside the array is the display pixel distribution area. The light emitted by the display pixels is reflected by the mirror and enters the human eye through the square hole array. Obviously, the square hole array can also be a pixel distribution area, and the outside of the array is a light-transmitting area. The pixel area is opaque, and light cannot directly enter the human eye through the pixel to eliminate the interference of stray light.

This embodiment will be described with reference to Figure 11c. The display system 1 is composed of an array of polygonal holes 1-17 distributed on a spherical surface or an area 1-18 outside the polygonal hole array. The polygonal hole array can transmit light and environment reflected by a mirror. Light, which can be air, a transparent substance, or a transparent optical element that can reduce the diffraction effect. The area outside the array is the display pixel distribution area. The light emitted by the display pixels is reflected by the mirror and enters the human eye through the polygonal hole array. Obviously, the polygonal hole array can also be a pixel distribution area, and the outside of the array is a light-transmitting area. The pixel area is opaque, and light cannot directly enter the human eye through the pixel to eliminate the interference of stray light.

DETAILED DESCRIPTION III. This embodiment mode will be described with reference to FIGS. 1, 2 and 12. This embodiment mode is another embodiment of a near-eye display optical system described in Embodiment Mode 1: including a display system 1, a spherical reflective lens 2 and the reference position pupil 3; in a coaxial symmetric form, the display system 1 is placed in front of the reference position pupil 3, and a spherical reflective lens 2 is arranged in front of the display system 1. The display system 1 is located on the focal plane of the spherical reflective lens 2, and the display system The spherical centers of 1 and the spherical reflective lens 2 are both near the center of the pupil 3 at the reference position, and the range is within 1 cm; the spherical reflective lens 2 has two surfaces, and the surface close to the display system is the partially reflective surface 2-1, which reflects The rate can be between 1%-99%. The surface far away from the display system is the transmissive surface 2-2, which is used to correct the ambient light to adapt to the wearer's myopia. In this system, the field of view of each angle is symmetrical with respect to the pupil, and the central field of view has the same display effect as other directions. Therefore, the optical performance of the system is greatly improved.

The display system 1 is composed of a spherical transparent display screen 1-20 alone or a combination of a transparent display screen 1-20 and a dynamic light-shielding layer 1-19. The dynamic light-shielding layer 1-19 is located on the side close to the human eye and is pasted on Below the transparent display screen 1-20. The dynamic light shielding layer 1-19 can be composed of liquid crystal pixels or an array of electrochromic materials, and the existing control board can be used to output HDMI signals or VGA signals to control the light transmission or opacity of each pixel; the control board can Fixed on the temples. In the spherical transparent display screen where 1-20 pixels are lit up less than the human eye pupil range, the dynamic light-shielding layer 1-19 is an opaque light-shielding area 1-19-1, and other places are transparent areas 1-19-2. The light emitted from the illuminated pixel toward the human eye is blocked by the light-shielding area 1-19-1 and cannot directly enter the human eye, thus blocking the stray light that directly enters the human eye. The light emitted from the transparent display screen 1-20 facing away from the human eye is reflected by the spherical mirror and then enters the human eye through the transparent area 1-19-2 of the transparent display screen 1-20 and the dynamic light shielding layer 1-19, due to the light shielding area 1-19 The size of -1 is smaller than the human eye, so some of the reflected light can still enter the human eye and be perceived by the human eye. At the same time, the size of the shading area 1-19-1 must be able to block the transparent display screen 1-20 from directly facing The light emitted by the pupil and the light emitted towards the area outside the pupil of the human eye can not be blocked.

The spherical radius of the display pixel distribution in the display system 1 is within the range of 5mm-45mm, and the radius error of the display pixel distribution is less than 45% of the spherical radius value;

表面surface	半径(mm)Radius (mm)	厚度(mm)Thickness(mm)	材料material
基准位置瞳孔3 Reference position pupil 3	无穷大gigantic	3636	空气air
部分反射面2-1Partially reflective surface 2-1	3636	-17.926-17.926	镜面Mirror
显示器系统1Display system 1	-18.027-18.027	--	--

It should be noted that the near-eye display optical system provided in the present application, while using the screen and mirror to reflect and display dynamic images in spherical symmetry, can be combined with one or more existing additional structures, such as wireless communication chips, IMU sensor, image sensor, etc., make the function of AR glasses more perfect.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express several implementation manners of the present application, and their description is relatively specific and detailed, but they should not be understood as a limitation on the scope of the patent application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the scope of protection of the patent of this application shall be subject to the appended claims.

Claims

A near-eye display optical system, which is characterized in that it includes a display system (1) and a spherical reflective lens (2);

Place the display system (1) in front of the pupil (3) at the reference position, and place the spherical reflective lens (2) in front of the display system (1);

The display pixels in the display system (1) are distributed on the convex surface, and the display pixels in the display system (1) emit light toward the spherical reflective lens (2), and the spherical reflective lens (2) reflects the light to the reference position of the pupil ( 3); Using the persistence effect of human vision, the display system (1) generates an image by emitting light in motion, and magnifies and reflects the image to the reference position of the pupil (3) through a spherical reflective lens (2).
The near-eye display optical system according to claim 1, characterized in that: the display system (1) includes a drive motor to rotate and an electronic control system to control its display, and the electronic control system is based on the display system (1) Load the corresponding image information and drive the display pixel to emit light.
The near-eye display optical system according to claim 1, characterized in that: the spherical reflective lens (2) is a part of the spherical surface and allows a deformation error in the range of 1 cm; the spherical reflective lens (2) has two surfaces : The first surface is a partially reflective surface (2-1), which is used to magnify and reflect the image on the display system (1) to the pupil (3) at the reference position; the second surface is a transmissive surface (2-2) ), used to correct the ambient light to adapt to the degree of the wearer; the positions of the partially reflective surface and the transmissive surface can be interchanged.
The near-eye display optical system according to claim 1, wherein the display system (1) is composed of a single or multiple linear array display pixels (1-4) randomly arranged on a convex surface.
The near-eye display optical system according to claim 1, characterized in that: a transparent protective thin layer (7) is included on the side of the display system (1) close to the human eye.
A near-eye display optical system, which is characterized in that it comprises a display system (1) and a spherical reflective lens (2); the spherical reflective lens (2) has two surfaces, the first surface is a partially reflective surface (2-1) ), used to magnify and reflect the image on the display system (1) to the reference position of the pupil (3), the second surface is the transmission surface (2-2), used to correct the ambient light to adapt to the wearer's degree , The position of the partially reflective surface and the transmissive surface can be interchanged;

A display system (1) is placed in front of the pupil (3) at the reference position, and a spherical reflective lens (2) is placed in front of the display system (1);

The display system (1) is composed of a hole-like structure array distributed on a spherical transparent substrate and an area outside the array;

The area outside the array is a display pixel distribution area, and the light emitted by the display pixels is reflected by the spherical reflective lens (2) and enters the pupil (3) at the reference position through the hole-like structure array.
The near-eye display optical system according to claim 6, characterized in that: the hole-like structure array and the outer area of the array are interchangeable, that is, the hole-like structure array is used as the pixel distribution area, and the outer area of the array is used as the light-transmitting area .
The near-eye display optical system according to claim 7, wherein the hole-like structure array is a circular hole array, an elliptical hole array, a square hole array, or a polygonal hole array.
A near-eye display optical system, which is characterized in that it includes a display system (1) and a spherical reflective lens (2);

Place the display system (1) in front of the pupil (3) at the reference position, and place the spherical reflective lens (2) in front of the display system (1);

The display system (1) is composed of a transparent display screen (1-20) alone, or a combination of a dynamic light shielding layer (1-19) and a transparent display screen (1-20), the dynamic light shielding layer (1-19) ) Is located on the side of the human eye, and is configured to block the light directly emitted from the transparent display screen (1-20) to the side of the human eye, and transmit the light reflected by the spherical reflective lens (2);

The spherical reflective lens (2) has two surfaces: the first surface is a partially reflective surface (2-1), which is used to amplify and reflect the image on the display system (1) to the pupil (3) at the reference position; The two surfaces are transmissive surfaces (2-2), which are used to correct the ambient light to adapt to the degree of the wearer; the positions of the partially reflective surface and the transmissive surface can be interchanged.
The near-eye display optical system according to claim 9, characterized in that: the dynamic light shielding layer (1-19), the transparent display screen (1-20) and the spherical reflective lens (2) in the display system (1) The shape is a part of the spherical surface, and the deformation error within 1cm is allowed.