Optical assembly and near-eye display device

Abstract

The invention provides an optical assembly and a near-to-eye display device, the optical assembly comprises a lens group, and a convex lens is used for forming a first imaging surface; the beam splitter is obliquely arranged on the light emitting side of the lens group; the half-reflecting mirror is arranged on the side, away from the human eyes, of the beam splitter, and the half-reflecting mirror is used for reflecting the light rays reflected by the beam splitter back to the beam splitter again; the first quarter-wave plate is arranged in a light path between the beam splitter and the half-reflecting mirror; and the beam splitter, the half-reflecting mirror and the first quarter-wave plate are used for imaging the first imaging surface again. The optical assembly can solve the problem that the lens group shields or interferes with light due to shortened focal length.

Description

Technical Field

[0001] The present invention relates to the field of near-eye display technology, and in particular to an optical component and a near-eye display device. Background Art

[0002] In the field of virtual reality (VR) and augmented reality (AR) near-eye display technology, the traditional Birdbath optical solution, with its mature design principles and core components such as lenses, beam splitters, semi-transparent and semi-reflective mirrors and polarizing films, achieves efficient transmission of screen light and presentation of virtual images.

[0003] However, for a fixed-size screen, the increase in the field of view (FOV) shortens the focal length, limits the back focus distance, and makes it easy for the front lens of the screen to block or interfere with the light, affecting the image quality, such as reduced clarity and contrast, and even causing distortion and color distortion. Taking a 0.68-inch screen as an example, when the FOV exceeds 51.5°, the lens interference is obvious and the image quality is greatly reduced. Summary of the invention

[0004] The embodiments of the present application provide an optical component and a near-eye display device, which can solve the problem of a lens group blocking or interfering with light due to a shortened focal length.

[0005] The present application provides an optical component, including:

[0006] A lens group, wherein the lens group is used to form a first imaging surface;

[0007] A beam splitter, obliquely arranged on the light-emitting side of the lens group;

[0008] A semi-reflective mirror is arranged on a side of the beam splitter away from the human eye, and is used to reflect the light reflected by the beam splitter back to the beam splitter;

[0009] a first quarter wave plate, arranged in the optical path between the beam splitter and the semi-reflective mirror;

[0010] The beam splitter, the half-reflecting mirror and the first quarter-wave plate re-image the first imaging surface.

[0011] In some embodiments, the lens group includes a first lens and a second lens, and the first lens and the second lens are both positive lenses.

[0012] In some embodiments, the first lens has a first surface and a second surface opposite to each other, and both the first surface and the second surface are curved surfaces.

[0013] In some embodiments, the second lens has a third surface and a fourth surface opposite to each other, the third surface faces the first lens and is a plane, and the fourth surface is a curved surface.

[0014] In some embodiments, the optical component also includes a semi-reflective film, a second quarter-wave plate and a polarized reflective plate, the semi-reflective film is arranged on the first lens; the second quarter-wave plate is arranged in the light path between the first lens and the second lens, and the polarized reflective plate is arranged in the light path between the second quarter-wave plate and the second lens.

[0015] In some embodiments, the semi-reflective mirror is a positive lens.

[0016] In some embodiments, the semi-reflective mirror has a fifth surface and a sixth surface opposite to each other, and both the fifth surface and the sixth surface are curved away from the beam splitter.

[0017] In some embodiments, the optical component includes a polarizer and a third quarter-wave plate, the third quarter-wave plate is arranged on the light-incoming side of the lens group, and the polarizer is arranged on a side of the third quarter-wave plate away from the lens group.

[0018] In some embodiments, the first quarter wave plate is attached to a side of the semi-reflective mirror close to the beam splitter, and the optical component also includes a supporting lens, which is arranged between the first quarter wave plate and the beam splitter and is used to fix the relative positions of the semi-reflective mirror, the first quarter wave plate and the beam splitter.

[0019] The embodiment of the present application also provides a near-eye display device, including:

[0020] Light Engine;

[0021] The optical component is the above optical component, and the optical component is arranged on the light output side of the light engine.

[0022] In the optical assembly and near-eye display device provided by the embodiments of the present application, the initial imaging is achieved through the lens group, and this initial imaging surface is regarded as the first imaging surface. Subsequently, the first imaging surface is re-imaged by utilizing the synergistic effect of the beam splitter, the half-reflecting mirror and the first quarter-wave plate, and finally the image is sent to the human eye. This solution increases the distance between the lens group and the half-reflecting mirror without increasing the screen size or the volume of the optical module, thereby effectively avoiding the lens occlusion or light interference problem that may be caused by the reduction of the focal length. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of the structure of an existing optical component.

[0025] Figure 2 A schematic diagram of the structure of an optical component provided in an embodiment of the present application.

[0026] Figure 3 for Figure 2 Schematic diagram of the corresponding optical path.

[0027] Figure 4 The MTF diagram of the optical component provided in the embodiment of the present application.

[0028] Figure 5 A first structural schematic diagram of a near-eye display device provided in an embodiment of the present application.

[0029] Figure 6 A second structural schematic diagram of the near-eye display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0031] In the field of virtual reality (VR) and augmented reality (AR) near-eye display technology, the traditional Birdbath optical solution has successfully achieved efficient transmission of screen light and realistic presentation of virtual images with its mature design concept and core components, such as lenses, high-efficiency beam splitters, semi-transparent and semi-reflective mirrors, and polarizing films. This solution not only optimizes the optical path design, but also ensures that users can get an immersive visual experience when wearing the device.

[0032] However, as technology continues to evolve and user experience requirements increase, please refer to Figure 1 , Figure 1Schematic diagram of the structure of existing optical components. The traditional Birdbath optical solution 1 also faces some challenges. Especially when using a screen of fixed size, if the field of view (FOV) increases, the focal length will be shortened accordingly, resulting in a limited back focus distance. In this case, the lens 2 in front of the screen can easily block or interfere with the light transmitted between the beam splitter 3 and the semi-transparent and semi-reflective mirror 4, thereby seriously affecting the image quality. Specifically, the clarity may decrease, the contrast may weaken, and even problems such as distortion and color distortion may occur. Taking a 0.68-inch screen as an example, when the FOV exceeds 51.5°, the interference of the lens becomes very obvious, resulting in a significant reduction in image quality and a serious impact on the user's visual experience.

[0033] Therefore, the embodiments of the present application provide an optical assembly and a near-eye display device, which can solve the problem of the lens group blocking or interfering with light due to the shortened focal length.

[0034] See also Figure 1 , Figure 2 A schematic diagram of the structure of an optical component provided in an embodiment of the present application.

[0035] The embodiment of the present application provides an optical component 100 , which includes a lens group 101 , a beam splitter 102 , a half mirror 103 , and a first quarter wave plate 104 .

[0036] The lens group 101 is used to form a first imaging surface. The beam splitter 102 is tiltedly arranged at the light-emitting side of the lens group 101, and can reflect the light propagating from the direction of the lens group 101 to the half-reflective mirror 103. The half-reflective mirror 103 is arranged on the side of the beam splitter 102 away from the human eye. The half-reflective mirror 103 is used to reflect the light reflected by the beam splitter 102 back to the beam splitter 102 again; the first quarter-wave plate 104 is arranged in the optical path between the beam splitter 102 and the half-reflective mirror 103. The beam splitter 102, the half-reflective mirror 103 and the first quarter-wave plate 104 re-image the first imaging surface and finally send the image to the human eye. This solution increases the distance between the lens group 101 and the half-reflective mirror 103 without increasing the screen size or the volume of the optical module, thereby effectively avoiding the lens blocking or light interference problems that may be caused by the reduction of the focal length.

[0037] The lens group 101 is used to magnify the display screen of the light engine 200, and can be a single lens, a positive-negative cemented lens, or a combination of multiple lenses. The lens group 101 is equivalent to a positive lens. In particular, the lens group 101 can include a first lens 1011 and a second lens 1012, both of which can be positive lenses, and the material can be selected to be resin, and the surface shape is designed to be aspherical to further optimize the imaging effect.

[0038] The beam splitter 102 is tilted and arranged at the light-emitting side of the lens group 101, and its normal line intersects with the visual axis to ensure that the light can be accurately guided. The beam splitter 102 has a specific polarization characteristic, which can reflect the first linear polarized light and transmit the second linear polarized light, and the polarization directions of the two are opposite. This characteristic is achieved by arranging a reflective polarizer 108 on one side of the beam splitter 102, thereby effectively separating the light with different polarization directions.

[0039] The semi-reflective mirror 103 is arranged on the side of the beam splitter 102 away from the human eye and is located on the reflection light path of the first imaging surface. A specific proportion of optical coating is coated on its surface, so that when the light reaches the semi-reflective mirror 103, part of it is reflected back to the beam splitter 102, and part of it is transmitted. This partial reflection and partial transmission characteristic provides the necessary conditions for the optical component 100 to be arranged in the near-eye display device 10.

[0040] The first quarter wave plate 104 is arranged in the optical path between the beam splitter 102 and the half mirror 103, and is used to change the polarization state of the light. When the first linear polarized light reflected by the beam splitter 102 passes through the first quarter wave plate 104, its polarization state changes. Subsequently, the light is reflected by the half mirror 103 and passes through the first quarter wave plate 104 again, at which time its polarization state changes again and is converted into the second linear polarized light that can pass through the beam splitter 102. Finally, this light that has been reflected multiple times and has changed its polarization state is emitted to the exit pupil position, enters the human eye, and forms a clear image.

[0041] Wherein, the first lens 1011 and the second lens 1012 can both be convex lenses, that is, the first lens 1011 has a first surface 1011a and a second surface 1011b opposite to each other, and the first surface 1011a and the second surface 1011b are both curved surfaces. The second lens 1012 has a third surface 1012a and a fourth surface 1012b opposite to each other, the third surface 1012a faces the first lens 1011 and is a plane, and the fourth surface 1012b is a curved surface. The curved surface can effectively converge light, thereby enhancing the clarity and brightness of the image. In particular, the third surface 1012a of the second lens 1012 faces the first lens 1011 and is designed to be a plane, while the fourth surface 1012b remains a curved surface. Such a design not only ensures the effective convergence of light, but also simplifies the processing and assembly process of the lens.

[0042] In some embodiments, the half-reflective mirror 103 is a positive lens, that is, the half-reflective mirror 103 has a certain optical power. This is equivalent to adding another lens in the optical path of the optical component 100, which can not only reduce the design pressure of the front lens group 101, but also make full use of the space between the beam splitter 102 and the half-reflective mirror 103, thereby reducing the overall volume of the optical component 100.

[0043] Among them, the semi-reflective mirror 103 has a relative fifth surface and a sixth surface, and the fifth surface and the sixth surface are both bent in a direction away from the beam splitter 102. The fifth surface faces the beam splitter 102, and the sixth surface is away from the beam splitter 102. Such a design enables the semi-reflective mirror 103 to maintain the convergence characteristics of light when reflecting the light from the beam splitter 102, further improving the clarity of the image. At the same time, the side surface of the semi-reflective mirror 103 away from the beam splitter 102 (i.e., the sixth surface) is designed to be convex (concave toward the human eye) and is provided with a spectroscopic film. This spectroscopic film can not only reflect the light from the beam splitter 102 and guide it to the human eye, but also transmit the external ambient light, so that the user can perceive the real environment of the outside world while enjoying the virtual picture, realizing the perfect fusion of virtual and reality.

[0044] In some embodiments, the optical component 100 further includes a semi-reflective film, a second quarter-wave plate 106, and a polarized reflective plate 107. The semi-reflective film is disposed on the first lens 1011; the second quarter-wave plate 106 is disposed in the light path between the first lens 1011 and the second lens 1012; and the polarized reflective plate 107 is disposed in the light path between the second quarter-wave plate 106 and the second lens 1012. The semi-reflective film, the second quarter-wave plate 106, and the polarized reflective plate 107 implement light path folding to further reduce the volume of the optical component 100.

[0045] Specifically, the semi-reflective film is arranged on the first lens 1011, and can be arranged on the side of the first lens 1011 away from the second lens 1012. The semi-reflective film can allow part of the light to pass through and reflect part of the light. When the circularly polarized light enters the optical component 100 and passes through the first lens 1011, it will be transmitted by the semi-reflective film. Subsequently, the light passes through the second quarter-wave plate 106, and its polarization state changes to form a second linearly polarized light. This second linearly polarized light is reflected back to the semi-reflective film by the polarizing reflective plate 107, passes through the second quarter-wave plate 106 again, and the polarization state changes, and is subsequently reflected back to the second quarter-wave plate 106 by the semi-reflective film. After passing through the second quarter-wave plate 106 three times, it is finally converted into the first linearly polarized light. Next, the first linearly polarized light passes through the polarizing reflective plate 107 and the second lens 1012 to form a first imaging plane. This imaging plane is then reflected by the beam splitter 102 and enters the optical path of the next stage.

[0046] In order to optimize the light emitted by the light engine 200, the present embodiment further introduces a polarizer 108 and a third quarter wave plate 109. The optical component 100 includes the polarizer 108 and the third quarter wave plate 109, the third quarter wave plate 109 is arranged on the light incident side of the lens group 101, and the polarizer 108 is arranged on a side of the third quarter wave plate 109 away from the lens group 101.

[0047] The polarizer 108 and the third quarter wave plate 109 are used to convert the light emitted by the light engine 200 into circularly polarized light, thereby ensuring the brightness of the displayed image and reducing light leakage. At the same time, the two components also have the function of eliminating reflected stray light, thereby improving the clarity of the image. In particular, the polarizer 108 and the third quarter wave plate 109 can be arranged on the light-emitting surface of the display screen, or on the side of the third quarter wave plate 109 away from the lens group 101, so as to further reduce the aberration and ghost image caused by the optical gap.

[0048] See also Figure 2 as well as Figure 3 , Figure 3 for Figure 2 Corresponding optical path schematic diagram. The optical path principle of the optical component 100 in the embodiment of the present application can be: the light emitted by the light engine 200 passes through the polarizer 108 and the third quarter wave plate 109 in sequence to form circularly polarized light. When the circularly polarized light enters the optical component 100 and passes through the first lens 1011, it will be transmitted by the semi-reflective film. Subsequently, the light passes through the second quarter wave plate 106, and its polarization state changes to form a second linearly polarized light. This second linearly polarized light is reflected back to the semi-reflective film by the polarizing reflective plate 107, passes through the second quarter wave plate 106 again, and the polarization state changes, and is subsequently reflected back to the second quarter wave plate 106 by the semi-reflective film. After passing through the second quarter wave plate 106 three times, it is finally converted into the first linearly polarized light. Next, the first linearly polarized light passes through the polarizing reflective plate 107 and the second lens 1012 to form a first imaging surface. This imaging surface is then reflected by the beam splitter 102, and the first linear polarized light propagates to the beam splitter 102, and after being reflected by the beam splitter 102, it passes through the first quarter wave plate 104 for the first time, is reflected by the half mirror 103, and passes through the first quarter wave plate 104 again. After passing through the first quarter wave plate 104 twice, the light is converted into the second linear polarized light, and the second linear polarized light can pass through the beam splitter 102 and enter the human eye. The polarization directions of the first linear polarized light and the second linear polarized light are perpendicular.

[0049] This design not only achieves the folding and compactness of the optical path, but also expands the optical path by reflecting the light back and forth between the first lens 1011 and the second lens 1012, thereby maximizing the area of ​​the light source within a limited distance. This not only expands the field of view, but also ensures the clarity of the image. At the same time, the highly integrated design of the optical component 100 effectively reduces the size and weight of the structure, making the near-eye display device 10 equipped with the optical component 100 more portable and easy to wear.

[0050] See also Figure 4 , Figure 4The MTF diagram of the optical component provided in the embodiment of the present application. The MTF (Modulation Transfer Function) diagram of the optical component 100 can show that the average MTF of the full field of view of the optical component 100 is greater than 0.45 at 20lp / mm. The field of view angle of the optical component 100 is greater than 60°, and the field of view angle is significantly increased compared to the optical component 100 with a prism solution in the prior art. The distortion of the image displayed by the optical component 100 is less than 1%.

[0051] In some embodiments, the first quarter wave plate 104 is attached to a side of the semi-reflective mirror 103 close to the beam splitter 102, and the optical component 100 also includes a supporting lens, which is arranged between the first quarter wave plate 104 and the beam splitter 102 and is used to fix the relative positions of the semi-reflective mirror 103, the first quarter wave plate 104 and the beam splitter 102.

[0052] Specifically, the first quarter wave plate 104 is attached to the side of the half mirror 103 close to the beam splitter 102, and the supporting lens is arranged between the first quarter wave plate 104 and the beam splitter 102. This supporting lens not only plays a role in fixing the relative positions of various components, but more importantly, it can effectively eliminate the aberration that may be generated by the beam splitter 102 and the half mirror 103 when transmitting external ambient light, thereby improving the imaging quality of the entire optical assembly 100.

[0053] In order to achieve better imaging effect, the supporting lens, the beam splitter 102 and the half-reflective mirror 103 can be made of the same material to ensure that their refractive index and Abbe number are consistent. In this way, when the external ambient light passes through these components, the aberration caused by material differences can be reduced.

[0054] The supporting lens has two opposite surfaces, which are respectively consistent with or have different surface shapes of the semi-reflecting mirror 103 and the beam splitter 102. When the two side surfaces of the supporting lens are respectively consistent with the surface shapes of the semi-reflecting mirror 103 and the beam splitter 102, it can be ensured that the transmitted ambient light has zero diopter, that is, the light can maintain its original direction after passing through these components without deflection. When the two surfaces of the supporting lens are respectively different from the two corresponding surfaces of the semi-reflecting mirror 103 and the beam splitter 102, the transmitted ambient light can be matched with the user's diopter. This design can be adjusted according to the actual needs of the user to achieve a more personalized imaging effect.

[0055] In summary, by introducing the support lens, the optical assembly 100 of this embodiment not only achieves the relative position fixation of each component, but also eliminates possible aberrations and improves the imaging quality. At the same time, the design of the support lens can also fully consider the actual needs of the user, and can be personalized according to the actual situation to achieve a better imaging effect.

[0056] See also Figure 5 , Figure 5 A schematic diagram of the first structure of a near-eye display device provided in an embodiment of the present application. The embodiment of the present application provides a near-eye display device 10, which includes a light engine 200 and an optical component 100, wherein the optical component 100 includes the optical component 100 in the above embodiment, and the optical component 100 is arranged on the light emitting side of the light engine 200.

[0057] The near-eye display device 10 is a device that is arranged in a certain distance (generally 2-5 cm) in front of the user's eyes and directly presents the display content in front of the user, such as a head-mounted display in a virtual reality (VR) device, an optical perspective glasses in an augmented reality (AR) device, etc. The near-eye display device 10 includes but is not limited to head-mounted devices such as AR glasses and AR helmets, and its application range is wide and flexible.

[0058] The light engine 200 is responsible for emitting light and forming an image. The light engine 200 in this embodiment may include various types such as LED miniaturization and matrix technology display screen (Micro LED display screen), OLED miniaturization and matrix technology display screen (Micro OLED display screen), laser beam scanning display screen (LBS display screen) and digital mirror display screen (DMD display screen). These advanced display screen technologies ensure the high resolution and color accuracy of virtual images, providing users with a more realistic and vivid visual experience. The light engine 200 is also called a micro-projection optical machine, optical machine, etc. If these terms are not specifically specified, they can be used interchangeably in this application. The display screen size of the light engine 200 can be 0.4 to 0.7".

[0059] The optical component 100 adopts the innovative design in the above-mentioned embodiment, including key components such as lens group 101, beam splitter 102, half mirror 103, quarter wave plate and supporting lens. These components work together to not only realize the clear imaging of virtual images, but also ensure the smooth transmission of light in real scenes, thereby realizing the real-time superposition of virtual information and real scenes, bringing an immersive virtual-real fusion experience to users.

[0060] Also, see Figure 6 , Figure 6A second structural diagram of a near-eye display device provided in an embodiment of the present application. The near-eye display device 10 is also equipped with key components such as a processor and a fixing member 300. The processor is responsible for receiving instructions, data processing, and controlling other components to ensure the overall smooth operation of the device. The fixing member 300 includes a glasses temple 302 and a frame 301, which are used to install, fix or carry the above-mentioned optical component 100, ensuring the stability and comfort of the entire device, and facilitating users to wear it for a long time.

[0061] The near-eye display device 10 may also include components such as sensors, circuits, output devices, and batteries or solar cells. The sensors can monitor the user's head movements or eye movements in real time, thereby adjusting the position and angle of the virtual image to further enhance the user experience. The circuit is responsible for connecting the various components to achieve information transmission and processing. The output device is used to display virtual images or issue sound prompts to the user. The battery or solar cell provides continuous power support for the device to ensure long-term operation of the device.

[0062] In addition, the near-eye display device 10 can also adopt designs such as wraparound lenses, adaptable glasses or auxiliary frames to meet the wearing needs of different users. At the same time, the device can also be equipped with a strap for fixing to ensure that the user can maintain stability and comfort during use.

[0063] In the optical assembly 100 and the near-eye display device 10 provided in the embodiment of the present application, the initial imaging is achieved through the lens group 101, and this initial imaging surface is regarded as the first imaging surface. Subsequently, the first imaging surface is imaged again by utilizing the synergistic effect of the beam splitter 102, the half-reflective mirror 103 and the first quarter-wave plate 104, and finally the image is sent to the human eye. This solution increases the distance between the lens group 101 and the half-reflective mirror 103 without increasing the screen size or the volume of the optical module, thereby effectively avoiding the lens occlusion or light interference problem that may be caused by the reduction of the focal length.

[0064] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0065] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0066] The optical assembly 100 and the near-eye display device 10 provided in the embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. An optical component, characterized in that: include: A lens group, wherein the lens group is used to form a first imaging surface; A beam splitter, obliquely arranged on the light-emitting side of the lens group; A semi-reflective mirror is arranged on a side of the beam splitter away from the human eye, and is used to reflect the light reflected by the beam splitter back to the beam splitter; a first quarter wave plate, arranged in the optical path between the beam splitter and the semi-reflective mirror; The beam splitter, the half-reflecting mirror and the first quarter-wave plate re-image the first imaging surface.

2. The optical component according to claim 1, characterized in that The lens group includes a first lens and a second lens, and both the first lens and the second lens are positive lenses.

3. The optical component according to claim 2, characterized in that The first lens has a first surface and a second surface opposite to each other, and both the first surface and the second surface are curved surfaces.

4. The optical component according to claim 2, characterized in that The second lens has a third surface and a fourth surface opposite to each other, the third surface faces the first lens and is a plane, and the fourth surface is a curved surface.

5. The optical component according to claim 2, characterized in that It also includes a semi-reflective film, a second quarter-wave plate and a polarized reflective plate, wherein the semi-reflective film is arranged on the first lens; the second quarter-wave plate is arranged in the light path between the first lens and the second lens, and the polarized reflective plate is arranged in the light path between the second quarter-wave plate and the second lens.

6. The optical component according to any one of claims 1 to 5, characterized in that: The half-reflecting mirror is a positive lens.

7. The optical component according to claim 6, characterized in that The semi-reflective mirror has a fifth surface and a sixth surface opposite to each other, and both the fifth surface and the sixth surface are curved in a direction away from the beam splitter.

8. The optical component according to any one of claims 1 to 5, characterized in that: It comprises a polarizing plate and a third quarter wave plate, wherein the third quarter wave plate is arranged on the light incident side of the lens group, and the polarizing plate is arranged on a side of the third quarter wave plate away from the lens group.

9. The optical component according to any one of claims 1 to 5, characterized in that: The first quarter wave plate is attached to a side of the semi-reflective mirror close to the beam splitter. The optical component also includes a supporting lens, which is arranged between the first quarter wave plate and the beam splitter and is used to fix the relative positions of the semi-reflective mirror, the first quarter wave plate and the beam splitter.

10. A near-eye display device, characterized in that: include: Light Engine; An optical component, wherein the optical component is the optical component according to any one of claims 1 to 9, and the optical component is arranged on the light output side of the light engine.

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