A near-eye display device and near-eye display apparatus

Abstract

This application discloses a near-eye display device and a near-eye display apparatus. The device includes an eye-tracking system, an optical display system, and a corrective lens. The eye-tracking system includes a light source module and an image acquisition module. The light source module emits polarized light. The image acquisition module includes a stray light suppression component, which can suppress at least a portion of stray light from entering the image acquisition module. The stray light is polarized light reflected by the corrective lens. The polarization properties of the light transmitted through the stray light suppression component are different from the polarization properties of the stray light reaching the image acquisition module. This avoids stray light formed after the illumination beam is reflected by the corrective lens from entering the image acquisition module, which helps improve image clarity and thus improves the accuracy of eye-tracking calculations.

Description

Technical Field

[0001] This application relates to the field of near-eye display technology, and more particularly to a near-eye display device and a near-eye display apparatus. Background Technology

[0002] In the field of near-eye displays, eye-tracking systems are typically integrated into the optical display system used to determine the user's gaze. Generally, due to differences in individual eye shapes, near-eye display devices worn by users usually require corrective lenses to ensure a clear view of the display interface. A current problem is that these corrective lenses reflect the light source used in eye tracking. This reflected light eventually enters the camera, causing blurry images and speckled light in the captured images of the user's eyes, thus reducing the accuracy of eye tracking. Summary of the Invention

[0003] This application provides a near-eye display device and a near-eye display apparatus to solve the problem in related technologies where the corrective lens in a near-eye display apparatus causes stray light reflection from the light source, resulting in excessive stray light spots in the eye image and thus unclear imaging.

[0004] According to one aspect of this application, a near-eye display device is provided, comprising: an eye-tracking system, an optical display system, and a corrective lens, wherein the eye-tracking system is disposed in the optical display system, and the corrective lens is disposed between the optical display system and the eyeball; the eye-tracking system includes a light source module and an image acquisition module;

[0005] The light source module is used to emit polarized light;

[0006] The image acquisition module includes a stray light suppression component, which can suppress at least a portion of stray light from entering the image acquisition module. The stray light is polarized light reflected by the corrective lens.

[0007] The polarization properties of the light transmitted through the stray light suppression component are different from the polarization properties of the stray light reaching the image acquisition module.

[0008] According to another aspect of this application, a near-eye display device is provided, including the near-eye display apparatus for suppressing stray light as described in any embodiment of this application.

[0009] The technical solution of this application embodiment provides a near-eye display device and a near-eye display apparatus. The near-eye display device includes an eye-tracking system, an optical display system, and a corrective lens. The eye-tracking system includes a light source module and an image acquisition module. The light source module emits polarized light. The image acquisition module includes a stray light suppression component, which can suppress at least some stray light from entering the image acquisition module. The stray light is formed by reflection from the corrective lens. The polarization property of the light transmitted through the stray light suppression component is different from the polarization property of the stray light reaching the image acquisition module. Therefore, by emitting polarized light from the light source module, the illumination beam forms a polarized beam. When this polarized beam is reflected by the corrective lens to form stray light, it is also a polarized beam. By setting a stray light suppression component with a polarization property different from that of the stray light on the image acquisition module, stray light formed after reflection from the corrective lens is prevented from entering the image acquisition module, which helps improve image clarity and thus improves the accuracy of eye-tracking calculations.

[0010] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a block diagram of a near-eye display device for suppressing stray light according to an embodiment of this application;

[0013] Figure 2 This is a schematic diagram showing the orientation of the light source module and image acquisition module proposed in the application embodiment;

[0014] Figure 3 This is a schematic diagram of the optical display system in the near-eye display device for suppressing stray light proposed in the embodiments of this application;

[0015] Figure 4 This is a schematic diagram of the optical display system in a near-eye display device for suppressing stray light, according to an embodiment of this application.

[0016] Figure 5 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to an embodiment of this application;

[0017] Figure 6This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, according to another embodiment of this application;

[0018] Figure 7 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, according to another embodiment of this application;

[0019] Figure 8 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, according to another embodiment of this application;

[0020] Figure 9 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, according to another embodiment of this application;

[0021] Figure 10 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, according to another embodiment of this application;

[0022] Figure 11 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0023] Figure 12 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0024] Figure 13 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0025] Figure 14 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0026] Figure 15 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0027] Figure 16 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0028] Figure 17 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0029] Figure 18 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0030] Figure 19 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0031] Figure 20 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0032] Figure 21 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0033] Figure 22 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0034] Figure 23 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0035] Figure 24 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0036] Figure 25 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0037] Figure 26 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0038] Figure 27 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0039] Figure 28 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0040] Figure 29 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0041] Figure 30 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0042] Figure 31 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0043] Figure 32 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0044] Figure 33This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0045] Figure 34 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0046] Figure 35 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0047] Figure 36 This is a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, as proposed in another embodiment of this application;

[0048] Figure 37 This is a schematic diagram of the structure of a near-eye display device proposed in one embodiment of this application. Detailed Implementation

[0049] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0050] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0051] Figure 1 This is a block diagram of a near-eye display device for suppressing stray light, as proposed in an embodiment of this application. Figure 1As shown, the device 00 includes: an eye-tracking system 100, an optical display system 200, and a corrective lens 400. The eye-tracking system 100 is configured within the optical display system 200, and the corrective lens 400 is disposed between the optical display system 200 and the eyeball. The eye-tracking system 100 includes a light source module 101 and an image acquisition module 102. The light source module 101 emits polarized light. The image acquisition module 102 includes a stray light suppression component 1022, which can suppress at least a portion of stray light from entering the image acquisition module 102. The stray light is polarized light reflected by the corrective lens 400. The polarization attribute of the stray light is determined based on the positions of the light source module 101 and the image acquisition module 102 within the optical display system 200. The polarization attribute of the light transmitted through the stray light suppression component 1022 is different from the polarization attribute of the stray light reaching the image acquisition module 102.

[0052] It should be noted that the eye-tracking system 100 uses an infrared beam emitted by a light source 1011 to illuminate the user's eyes, and the image acquisition module 102 receives the image of the user's eye after illumination by the infrared light source. The image acquisition module 102 includes an infrared camera (hereinafter referred to as camera 1021) that can be used in conjunction with the wavelength of the light source 1011. The optical display system 200 can be a pancake optical display system or an optical display system of other shapes or forms. The corrective lens 400 can be understood as a lens used to correct the user's vision, such as a myopia lens, hyperopia lens, or astigmatism lens.

[0053] The different positions of the light source 1011, camera 1021, and optical display system 200 result in different stray light polarization properties introduced into camera 1021 after reflection by the corrective lens 400. The main possible positions of the light source 1011 and camera 1021 relative to the optical display system 200 are: external light source, internal light source, external camera, and internal camera. An external light source means that the light emitted by the light source 1011 can reach the human eye without needing to pass through the optical display system 200 for transmission or reflection. An internal light source means that the light emitted by the light source 1011 must pass through one or more lenses of the optical display system 200 for transmission or reflection to reach the human eye. An external camera means that the light reaching the human eye, after diffuse or specular reflection, can enter camera 1021 without needing to pass through the optical display system 200 for transmission or reflection. An internal camera means that the light reaching the human eye, after diffuse or specular reflection, must pass through the optical display system 200 for transmission or reflection to enter camera 1021.

[0054] It can be understood that stray light refers to the polarized light emitted from the light source module 101 that reaches the image acquisition module 102 after being reflected by the corrective lens 400. Effective light refers to the light emitted from the light source module 101 that is reflected by the human eye but not by the surface of the corrective lens 400 and reaches the image acquisition module 102. Alternatively, it can be described as the light emitted from the illumination beam of the light source 1011 that reaches the camera 1021 after being reflected by the surface of the corrective lens 400. Effective light refers to the light emitted from the light source 1011 that is diffusely reflected by the human eye but not by the surface of the corrective lens 400 and reaches the camera 1021. Alternatively, stray light refers to the light emitted from the illumination beam of the light source 1011 that is reflected by the surface of the corrective lens 400 and reaches the camera 1021. Effective light refers to the light emitted from the light source 1011 that is diffusely reflected by the human eye but not by the surface of the corrective lens 400 and reaches the camera 1021.

[0055] Because of the different positional relationships between the light source 1011, the camera 1021, and the optical display system 200, the polarization properties of the stray light introduced into the camera 1021 are also different. Furthermore, the polarization-dependent film layer on the optical display system 200 affects the polarization properties of the stray light entering the camera 1021. Therefore, based on the positional relationships between the light source 1011, the camera 1021, and the optical display system 200, the polarization properties of the stray light entering the camera 1021 can be determined. By adding a stray light suppression component 1022 with a different polarization property than the stray light in front of the camera 1021, the stray light entering the camera 1021 can be effectively suppressed, allowing the image acquisition module 102 to acquire a clearer eye image with less stray light.

[0056] Reference Appendix Figure 2 In Figure a, the emitting end of the illumination beam from the light source 1011 in the light source module 101 faces the user's eyeball 300, and the image acquisition window of the image acquisition module 102 faces the user's eyeball 300. Of course, in other embodiments, refer to the appendix... Figure 2 In Figure b, the light source module 101 and the image acquisition module 102 are facing opposite directions; or refer to the attached diagram. Figure 2 In Figure c, the orientation of both the light source module 101 and the image acquisition module 102 can be opposite to the user's eyeball 300. Of course, in the appendix... Figure 2 In the case of Figure b or Figure c, the eye-tracking system 100 of this application should also include a reflection module 103, used to reflect the illumination beam emitted from the light source module 101 toward the user's eyeball 300, or to reflect the illumination beam into the image acquisition module 102, etc. The reflection module 103 can be a reflector, or a reflection structure composed of multiple reflection units, etc.

[0057] The light source module 101 is used to emit polarized light, enabling the eye-tracking device to emit polarized light toward the user's eyes and acquire images of the user's eyes.

[0058] The stray light suppression component 1022 can suppress at least a portion of stray light from entering the image acquisition module 102. The polarization properties of the light transmitted through the stray light suppression component 1022 are different from the polarization properties of the stray light reaching the image acquisition module 102. In this embodiment, the stray light suppression component 1022 can suppress a portion of the stray light reaching the image acquisition module 102. The polarization properties of the suppressed stray light should be different from the polarization properties of the light transmitted through the stray light suppression component 1022. Therefore, this application does not specifically limit the specific way in which the stray light suppression component 1022 can make the polarization properties of the light transmitted through it different from the polarization properties of the stray light. For example, if only circularly polarized light needs to pass through the stray light suppression component 1022, the stray light suppression component 1022 can be composed of a composite film of linear polarization and quarter-wave delay, or it can be composed of a combination of a linear polarizer and a quarter-wave plate layer, etc. Other stray light with polarization properties different from circularly polarized light will be blocked by the stray light suppression component 1022.

[0059] Figure 3 This is a schematic diagram of the optical display system in a near-eye display device for suppressing stray light, as proposed in an embodiment of this application. Figure 3 As shown, the optical display system 200 includes a display screen 201, a lens group 202, and an optical path folding assembly 203; in the direction from the display screen 201 to the lens group 202, the optical path folding assembly 203 sequentially includes a semi-reflective layer 2031, a quarter-wave plate layer 2032, a polarization beam splitter layer 2033, and a linear polarization layer 2034.

[0060] in, Figure 3As an example of an optical display system 200, the lens group 202 is a single lens, and a semi-reflective layer 2031 is disposed on the surface of the lens near the display screen 201. A quarter-wave plate layer 2032, a polarizing beam-splitter layer 2033, and a linear polarizing layer 2034 are all disposed on the surface of the lens near the user's eyeball 300. In other examples, the semi-reflective layer 2031, quarter-wave plate layer 2032, polarizing beam-splitter layer 2033, and linear polarizing layer 2034 may all be disposed on the surface of the lens near the display screen 201, or all may be disposed on the surface of the lens near the user's eyeball 300. Alternatively, the semi-reflective layer 2031 and quarter-wave plate layer 2032 may be disposed on the surface of the lens near the display screen 201, and the polarizing beam-splitter layer 2033 and linear polarizing layer 2034 may be disposed on the surface of the lens near the user's eyeball 300. Alternatively, the semi-reflective layer 2031, the quarter-wave plate layer 2032, and the polarizing beam splitter layer 2033 are disposed on the surface of the lens near the display screen 201, and the linear polarizing layer 2034 is disposed on the surface of the lens near the user's eyeball 300. It is understood that the optical path folding assembly 203 is disposed in the lens group 202, and at least one or more of the semi-reflective layer 2031, quarter-wave plate layer 2032, polarizing beam splitter layer 2033, and linear polarizing layer 2034 in the optical path folding assembly 203 can be attached to the lens surface in the lens group 202 in the form of a film, or disposed in the form of a sheet before, after, or between different lenses in the lens group 202. The optical elements such as the semi-reflective and semi-transparent layer 2031, quarter-wave plate layer 2032, polarization beam-splitter layer 2033, and linear polarization layer 2034 in the optical path folding assembly 203 can exist in the form of films or sheets, such as semi-reflective and semi-transparent sheets, quarter-wave plates, polarization beam-splitters, and linear polarizers, or as semi-reflective and semi-transparent films, polarization beam-splitter films, and linear polarization films. That is, the semi-reflective and semi-transparent layer 2031 is a semi-reflective and semi-transparent sheet or a thin film with semi-reflective and semi-transparent properties; the quarter-wave plate layer 2032 is a quarter-wave plate or a thin film with quarter-wave plate properties; the polarization beam-splitter layer 2033 is a polarization beam-splitter or a thin film with polarization beam-splitter properties; and the linear polarization layer 2034 is a linear polarizer or a thin film with linear polarization properties. This application does not specifically limit the form in which the optical elements exist in the optical path folding assembly 203.

[0061] Furthermore, the lens group 202 can be equipped with multiple lenses according to actual needs, and the optical path folding assembly 203 is arranged sequentially on the surface of the corresponding lens in the direction from the display screen 201 to the lens group 202.

[0062] The polarization beam splitter layer 2033 can be either an optical element that transmits S-polarized light and reflects P-polarized light, or an optical element that transmits P-polarized light and reflects S-polarized light. The linear polarization layer 2034 can be either an optical element that transmits S-polarized light or an optical element that transmits P-polarized light. In other words, in this embodiment, the optical elements in the optical path folding assembly 203 are primarily used to achieve polarization and semi-reflective / semi-transparent functions. No specific limitation is made on which polarization or semi-reflective / semi-transparent function is achieved; it can be specifically set according to the actual application of the product.

[0063] In some embodiments, the light source module 101 includes a light source 1011 and a polarizing component 1012. The light source 1011 is used to emit an illumination beam; the polarizing component 1012 is used to convert the illumination beam into polarized light. Part of the illumination beam is reflected by the corrective lens 400 and becomes stray light before entering the optical display system 200. Another part of the illumination beam is not reflected by the corrective lens 400, but passes through the corrective lens 400 and is reflected by the user's eyeball before entering the optical display system 200 to form effective light.

[0064] The polarizing component 1012 is used to convert the illumination beam into polarized light. The polarizing component 1012 can be composed of a composite film of linear polarization and quarter-wave delay, or it can be composed of a combination of a linear polarizer and a quarter-wave plate layer, or it can be composed solely of a linear polarizer, etc. The polarizing component 1012 in this embodiment can convert the illumination beam into polarized light. This application does not impose specific limitations on the specific manner in which the polarizing component 1012 converts the illumination beam into polarized light.

[0065] The polarization component 1012 includes a circular polarization component or a linear polarization component. The circular polarization component is used to convert the illumination beam into circularly polarized light, and the linear polarization component is used to convert the illumination beam into linearly polarized light.

[0066] The polarizing component 1012 may include at least one optical element from the optical path folding component 203, which is used to convert the illumination beam into polarized light. The optical elements in the optical path folding component 203 include a semi-reflective layer 2031, a quarter-wave plate layer 2032, a polarization beam splitter layer 2033, and a linear polarization layer 2034, etc. For example, the linear polarization layer 2034 in the optical path folding component 203 can be considered as the polarizing component 1012, and the assembly formed by the quarter-wave plate layer 2032, the polarization beam splitter layer 2033, and the linear polarization layer 2034 in the optical path folding component 203 can be considered as the polarizing component 1012, etc. That is, when the polarizing component 1012 is at least a portion of the optical elements in the optical path folding component 203, no additional optical elements need to be added before the light source 1011; the effect of emitting polarized light can be achieved using the optical elements in the optical path folding component 203.

[0067] In other embodiments, the light source module 101 includes a polarized light source for emitting polarized light.

[0068] Specifically, the polarized light emitted from the polarized light source can be circularly polarized light, or circularly polarized light whose rotation direction is the same as the rotation direction of the combination of the polarization beam splitter layer and the quarter-wave plate layer or the combination of the linear polarization layer and the quarter-wave plate layer in the optical path folding component, which can transmit circularly polarized light. It can also be linearly polarized light, or linearly polarized light whose vibration direction is the same as the vibration direction of the linearly polarized light that can be transmitted by the polarization beam splitter layer or the linear polarization layer in the optical path folding structure. The embodiments of this application do not specifically limit the polarized light attributes emitted from the polarized light source.

[0069] Optionally, the polarizing component is a circular polarizing component, which is used to convert the illumination beam into circularly polarized light. It can be understood that when the polarizing component 1012 is a circular polarizing component, the circular polarizing component can convert the illumination beam into circularly polarized light in any rotation direction, such as left-handed circularly polarized light, right-handed circularly polarized light, etc.

[0070] Optionally, the rotation direction of the circularly polarized light is the same as the rotation direction of the circularly polarized light that can be transmitted after the combination of the polarization beam splitter layer 2033 and the quarter-wave plate layer 2032 or the combination of the linear polarization layer 2034 and the quarter-wave plate layer 2032 in the optical path folding component 203.

[0071] Specifically, if the polarization beam splitter layer 2033 transmits S-polarized light and reflects P-polarized light, it can transmit left-handed circularly polarized light when combined with the quarter-wave plate layer 2032. Similarly, if the linear polarization layer 2034 transmits S-polarized light, it can transmit left-handed circularly polarized light when combined with the quarter-wave plate layer 2032. Therefore, the rotation direction of the circularly polarized light passing through the circular polarization assembly can be left-handed circularly polarized light.

[0072] If the polarization beam splitter layer 2033 transmits P-linearly polarized light and reflects S-linearly polarized light, then when combined with the quarter-wave plate layer 2032, it transmits right-handed circularly polarized light. Similarly, if the linear polarization layer 2034 transmits P-linearly polarized light, then when combined with the quarter-wave plate layer 2032, it transmits right-handed circularly polarized light. Therefore, the rotation direction of the circularly polarized light passing through the circular polarization assembly can be right-handed circularly polarized light.

[0073] In this embodiment, the polarizing component is a linear polarizing component, which is used to convert the illumination beam into linearly polarized light. It is understood that when the polarizing component 1012 is a linear polarizing component, it can convert the illumination beam into linearly polarized light with arbitrary vibration directions, such as p-polarized light, S-polarized light, etc.

[0074] Optionally, the vibration direction of the linearly polarized light is the same as the vibration direction of the linearly polarized light that can be transmitted through the polarization beam splitter layer 2033 or the linear polarization layer 2034 in the optical path folding structure 203. Specifically, if the polarization beam splitter layer 2033 transmits S-polarized light and reflects P-polarized light, or if the linear polarization layer 2034 transmits S-polarized light, then the vibration direction of the linearly polarized light formed by the light source module 101 is also that of S-polarized light. Conversely, if the polarization beam splitter layer 2033 transmits P-polarized light and reflects S-polarized light, or if the linear polarization layer 2034 transmits P-polarized light, then the vibration direction of the linearly polarized light formed by the light source module 101 is also that of P-polarized light.

[0075] It should be noted that after the rotation or vibration direction of the polarized light emitted from the light source module 101 is determined, and the positional relationship between the light source 1011, camera 1021, optical path folding component 203, and corrective lens 400 is determined, the polarization attribute of the stray light will be determined. Therefore, a corresponding stray light suppression component 1022 can be set in front of the camera 1021 to suppress stray light with the corresponding polarization attribute.

[0076] Optionally, the stray light suppression component 1022 may include at least one optical element from the optical path folding component 203. This optical element prevents polarized light reflected from the corrective lens 400 from entering the image acquisition module 102. The optical elements in the optical path folding component 203 include a semi-reflective layer 2031, a quarter-wave plate layer 2032, a polarization beam splitter layer 2033, and a linear polarization layer 2034. For example, the linear polarization layer 2034 in the optical path folding component 203 can be considered as the stray light suppression component 1022, and the component consisting of the quarter-wave plate layer 2032, the polarization beam splitter layer 2033, and the linear polarization layer 2034 in the optical path folding component 203 can also be considered as the stray light suppression component 1022. In other words, when the stray light suppression component 1022 is at least a portion of the optical elements in the optical path folding component 203, no additional optical elements need to be added in front of the camera 1021; the effect of suppressing stray light can be achieved using the optical elements in the optical path folding component 203.

[0077] Optionally, the polarized light includes linearly polarized light, and the stray light suppression component 1022 can transmit polarized light that is in the same direction as the vibration of the linearly polarized light.

[0078] Optionally, the polarized light includes circularly polarized light, and the stray light suppression component 1022 can transmit polarized light that is in the same direction of rotation as the circularly polarized light.

[0079] Optionally, the polarized light includes linearly polarized light, and the stray light suppression component 1022 can transmit polarized light with a vibration direction different from that of the linearly polarized light.

[0080] Optionally, the polarized light includes circularly polarized light, and the stray light suppression component 1022 can transmit polarized light with a different rotation direction than the circularly polarized light.

[0081] It is understood that the polarizing component 1012 converts the illumination beam into polarized light, which can be circularly polarized or linearly polarized. This polarized light can pass through the stray light suppression component 1022 and enter the camera 1021. The direction of the polarized light that the stray light suppression component 1022 can transmit may be the same as or different from the direction of the polarized light converted from the illumination beam by the polarizing component 1012. The direction of the polarized light can include the rotation direction of the polarized light, the vibration direction of the polarized light, etc. The polarized light that the stray light suppression component 1022 can transmit is effective light, and the stray light suppression component 1022 can block at least a portion of stray light with polarization properties different from those of the light that the stray light suppression component 1022 can transmit. For example, if the polarized light is linearly polarized and vibrates horizontally, the stray light suppression component 1022 can transmit the horizontally vibrating linearly polarized light, and can block the vertically vibrating linearly polarized light, as well as some linearly polarized light vibrating at a certain angle. Therefore, the light transmitted by the stray light suppression component 1022 is effective light, and the light blocked by the stray light suppression component 1022 is at least partially stray light. In other words, the polarization property of the light transmitted by the stray light suppression component 1022 is determined by the polarization property of the stray light.

[0082] Optionally, the vibration direction of the linearly polarized light transmitted by the stray light suppression component 1022 is the same as the vibration direction of the linearly polarized light transmitted by the polarization beam splitter layer 2033 or the linear polarization layer 2034 in the optical path folding component 203. That is, if the polarization beam splitter layer 2033 transmits S-polarized light and reflects P-polarized light, or if the linear polarization layer 2034 transmits S-polarized light, then the stray light suppression component 1022 can be a stray light suppression component that transmits S-polarized light, so as to suppress the stray light of P-polarized light formed after the circularly polarized light formed by the light source module 101 is reflected by the optical path folding component 203 and the lens group 202. Conversely, if the polarization beam splitter layer 2033 transmits P-polarized light and reflects S-polarized light, or the linear polarization layer 2034 transmits P-polarized light, then the stray light suppression component 1022 can be a stray light suppression component that transmits P-polarized light, so as to suppress the stray light of S-polarized light formed after the circularly polarized light formed by the light source module 101 is reflected by the optical path folding component 203 and the lens group 202.

[0083] Optionally, the vibration direction of linearly polarized light that can be transmitted through the stray light suppression component 1022 is different from the vibration direction of linearly polarized light that can be transmitted through the polarization beam splitter layer 2033 or the linear polarization layer 2034 in the optical path folding component 203.

[0084] In other words, if the polarization beam splitter layer 2033 transmits S-polarized light and reflects P-polarized light, or if the linear polarization layer 2034 transmits S-polarized light, then the stray light suppression component 1022 can be a stray light suppression component that transmits P-polarized light, in order to suppress stray light from the S-polarized light formed after the circularly polarized light generated by the light source module 101 is reflected by the optical path folding component 203 and the lens group 202. Conversely, if the polarization beam splitter layer 2033 transmits P-polarized light and reflects S-polarized light, or if the linear polarization layer 2034 transmits P-polarized light, then the stray light suppression component 1022 can be a stray light suppression component that transmits S-polarized light, in order to suppress stray light from the P-polarized light formed after the circularly polarized light generated by the light source module 101 is reflected by the optical path folding component 203 and the lens group 202.

[0085] Optionally, the direction of rotation of the circularly polarized light that can be transmitted by the stray light suppression component 1022 is the same as the direction of rotation of the circularly polarized light that can be transmitted by the combination of the polarization beam splitter layer 2033 and the quarter-wave plate layer 2032 in the optical path folding component 203, or the combination of the linear polarization layer 2034 and the quarter-wave plate layer 2032.

[0086] If the polarization beam splitter layer 2033 transmits S-polarized light and reflects P-polarized light, it combines with the quarter-wave plate layer 2032 to transmit left-handed circularly polarized light. Similarly, if the linear polarization layer 2034 transmits S-polarized light, it combines with the quarter-wave plate layer 2032 to transmit left-handed circularly polarized light. The stray light suppression component 1022 can be a stray light suppression component that transmits left-handed circularly polarized light, in order to suppress stray light from right-handed circularly polarized light formed after the circularly polarized light generated by the light source module 101 is reflected by the optical path folding component 203 and the lens group 202.

[0087] If the polarization beam splitter layer 2033 transmits P-linearly polarized light and reflects S-linearly polarized light, it combines with the quarter-wave plate layer 2032 to transmit right-hand circularly polarized light. Similarly, if the linear polarization layer 2034 transmits P-linearly polarized light, it combines with the quarter-wave plate layer 2032 to transmit right-hand circularly polarized light. The stray light suppression component 1022 can be a stray light suppression component that transmits right-hand circularly polarized light, in order to suppress stray light from the left-hand circularly polarized light formed after the circularly polarized light generated by the light source module 101 is reflected by the optical path folding component 203 and the lens group 202.

[0088] Optionally, the direction of rotation of the circularly polarized light transmitted by the stray light suppression component 1022 is opposite to the direction of rotation of the circularly polarized light transmitted by the combination of the polarization beam splitter layer 2033 and the quarter-wave plate layer 2032 in the optical path folding component 203, or the combination of the linear polarization layer 2034 and the quarter-wave plate layer 2032.

[0089] If the polarization beam splitter layer 2033 transmits S-polarized light and reflects P-polarized light, it combines with the quarter-wave plate layer 2032 to transmit left-handed circularly polarized light. Similarly, if the linear polarization layer 2034 transmits S-polarized light, it combines with the quarter-wave plate layer 2032 to transmit left-handed circularly polarized light. The stray light suppression component 1022 can be a stray light suppression component that transmits right-handed circularly polarized light, in order to suppress stray light from the left-handed circularly polarized light formed after the circularly polarized light generated by the light source module 101 is reflected by the optical path folding component 203 and the lens group 202.

[0090] If the polarization beam splitter layer 2033 transmits P-linearly polarized light and reflects S-linearly polarized light, it combines with the quarter-wave plate layer 2032 to transmit right-hand circularly polarized light. Similarly, if the linear polarization layer 2034 transmits P-linearly polarized light, it combines with the quarter-wave plate layer 2032 to transmit right-hand circularly polarized light. The stray light suppression component 1022 can be a stray light suppression component that transmits left-hand circularly polarized light, in order to suppress stray light from the right-hand circularly polarized light formed after the circularly polarized light generated by the light source module 101 is reflected by the optical path folding component 203 and the lens group 202.

[0091] It should be noted that the reference appendix... Figure 2 In Figure a, when the emitting end of the illumination beam of the light source 1011 in the light source module 101 and the image acquisition window of the image acquisition module 102 are both facing the user's eyeball 300, the polarizing component 1012 may only include a polarizing structure to convert the illumination beam of the light source 1011 into polarized light, and the stray light suppression component 1022 may only include a stray light suppression structure to prevent stray light from entering the image acquisition window of the image acquisition module 102, so that effective light can enter the image acquisition window of the image acquisition module 102.

[0092] Reference Appendix Figure 2In Figures b and c, when the emitting end of the illumination beam from the light source 1011 in the light source module 101 faces away from the user's eyeball 300, the polarizing component 1012 includes a polarizing structure and a reflection module 103. The reflection module 103 is used to direct the illumination beam toward the user's eyeball 300. In other words, the reflection module 103 adjusts the illumination beam from the light source 1011 to illuminate the user's eyeball 300. The polarization properties of the illumination beam adjusted to illuminate the user's eyeball 300 are jointly determined by the reflection module 103 and the polarizing structure. That is, the polarization properties of the light emitted from the light source module 101 are jointly determined by the reflection module 103 and the polarizing structure. Alternatively, when the light source 1011 is initially facing away from the user's eyeball 300, the polarization properties of the polarized light emitted from the light source module 101 should be equivalent to the polarization properties of the polarized light emitted from the light source module 101 when it illuminates the user's eyeball 300. For example, the light source 1011 initially faces away from the user's eyeball 300. When the polarizing structure converts the illumination beam emitted by the light source 1011 into P-polarized light, the direction of the P-polarized light is away from the user's eyeball 300. After being reflected by the reflection module 103, the P-polarized light becomes S-polarized light, and the direction of the S-polarized light is towards the user's eyeball 300. Therefore, the polarized light emitted by the light source module 101 is S-polarized light.

[0093] When the image acquisition window of the image acquisition module 102 faces away from the user's eye 300, the stray light suppression component 1022 includes a stray light suppression structure and a reflection module 103. The reflection module 103 is used to adjust the stray light and effective light illuminating the non-image acquisition window of the image acquisition module 102 toward the image acquisition window of the image acquisition module 102. The polarization properties of the stray light reaching the image acquisition module 102 are also determined by the reflection module 103. That is, the polarization properties of the effective light that the stray light suppression component 1022 can transmit, and the polarization properties of the stray light that can be blocked from transmission, are jointly determined by the reflection module 103 and the stray light suppression structure. In other words, when the image acquisition window of the image acquisition module 102 is initially facing away from the user's eye 300, the polarization properties of the light that the stray light suppression component 1022 can transmit should be equal to the polarization properties of the effective light illuminating the non-image acquisition window of the image acquisition module 102. For example, the image acquisition window of the image acquisition module 102 is initially facing away from the user's eyeball 300. The effective light illuminating the non-image acquisition window of the image acquisition module 102 is P-line polarized light. After being reflected by the reflection module 103, the P-line polarized light becomes S-line polarized light. The stray light suppression structure can transmit S-line polarized light, while the effective light that can be transmitted by the stray light suppression component 1022 is P-line polarized light.

[0094] In other words, when the near-eye display device in this application includes a reflection module 103, or when at least one of the emitting ends of the illumination beam of the light source 1011 in the light source module 101 faces away from the user's eyeball 300, the polarization properties that the stray light suppression component 1022 can transmit may be different from the direction of the polarization light emitted from the light source module 101. Alternatively, the vibration direction of the linearly polarized light that the stray light suppression component 1022 can transmit may be different from the vibration direction of the linearly polarized light that the polarization beam splitter or linearly polarized layer in the optical path folding component can transmit. Or, the rotation direction of the circularly polarized light that the stray light suppression component 1022 can transmit may be opposite to the rotation direction of the circularly polarized light that can be transmitted after the combination of the polarization beam splitter and the quarter-wave plate layer or the combination of the linearly polarized layer and the quarter-wave plate layer in the optical path folding component.

[0095] In the following embodiments, a linear polarization layer 2034 is used to transmit S-polarized light, a polarization beam splitter layer 2033 is used to transmit S-polarized light and reflect P-polarized light, and a polarizing component 1012 is used to transmit either left-handed circularly polarized light or S-polarized light. This determines the light properties that the stray light suppression component 1022 needs to transmit, or in other words, the stray light properties that need to be suppressed. Furthermore, the light emitting end of the light source module 101 and the image acquisition end of the image acquisition module 102 both face the user's eyeball 300. Embodiments that utilize a linear polarization layer 2034, a polarization beam splitter layer 2033, and a polarizing component 1012 with other functions, and ultimately suppress stray light through the stray light suppression component 1022, should also be within the scope of protection of this application.

[0096] In one embodiment, the linear polarization layer 2034 can transmit S-polarized light, and the polarization beam splitter layer 2033 is used to transmit S-polarized light and reflect P-polarized light. The process by which the display screen 201 displays an image to the user's eye is as follows: If the display beam incident on the lens group 202 is right-hand circularly polarized light (RCP) (i.e., a corresponding film layer can be attached to the display screen 201 (e.g., ...) Figure 4 This is a schematic diagram of the optical display system in a near-eye display device for suppressing stray light, according to an embodiment of this application. Figure 4As shown, a P-polarized light film layer 204 and a quarter-wave plate layer 205 are configured. Thus, the display beam emitted from the display screen 201 is right-hand circularly polarized light. After being transmitted through the semi-reflective layer 2031, it remains right-hand circularly polarized light (RCP). After being transmitted through the quarter-wave plate layer 2032, it becomes P-polarized light. After being reflected by the polarization beam splitter layer 2033, it remains P-polarized light. After being transmitted through the quarter-wave plate layer 2032, it becomes right-hand circularly polarized light (RCP). After being reflected by the semi-reflective layer 2031, it becomes left-hand circularly polarized light. After being transmitted through the quarter-wave plate layer 2032, it becomes S-polarized light. After being transmitted through the polarization beam splitter layer 2033, it remains S-polarized light. After being transmitted through the linear polarization layer 2034, it remains S-polarized light. It then reaches the human eye through the corrective lens 400, thus presenting the display information carried by the display beam of the display screen 201 to the human eye.

[0097] In other embodiments, the display screen 201 can display left-hand circularly polarized light (LCP), that is, an S-polarized light film layer 204 and a quarter-wave plate layer 205 are provided on the display screen 201, the linear polarization layer 2034 can also transmit P-polarized light, and the polarization beam splitter layer 2033 is used to transmit P-polarized light and reflect S-polarized light.

[0098] When the position of the light source 1011 in the optical display system 200 is different, the optical path folding component 203 has different effects on the polarization properties of the reflected or transmitted illumination beam. Similarly, when the position of the camera 1021 in the optical display system 200 is different, the optical path folding component 203 has different effects on the polarization properties of the reflected or transmitted stray light entering the camera 1021. A detailed analysis is provided below to obtain the polarization properties of the stray light suppression component 1022.

[0099] For ease of description and understanding, the following definition defines the linear polarization layer 2034 as capable of transmitting S-polarized light, the polarization beam splitter layer 2033 as capable of transmitting S-polarized light and reflecting P-polarized light, the S-polarized light passing through the quarter-wave plate layer 2032 as becoming left-handed circularly polarized light (LCP), the P-polarized light passing through the quarter-wave plate layer 2032 as becoming right-handed circularly polarized light (RCP), the left-handed circularly polarized light (LCP) passing through the quarter-wave plate layer 2032 as becoming S-polarized light, and the right-handed circularly polarized light (RCP) passing through the quarter-wave plate layer 2032 as becoming P-polarized light.

[0100] The number and position of the lenses in the lens group 202 can be set according to the arrangement requirements of each optical element in the optical display system 200. This application embodiment does not limit the number of lenses and the arrangement position of the lenses in the lens group 202. For example, the lens group 202 may include one lens, which can be represented as lens 2021, or two lenses, which can be represented as lens 2021 and lens 2022. It may also include three lenses, which can be represented as lens 2021, lens 2022 and lens 2023, etc.

[0101] Figure 5 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. Both the light source module 101 and the image acquisition module 102 are located between the linear polarization layer 2034 and the corrective lens 400 of the optical display system 200. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light, and the stray light suppression component 1022 in the image acquisition module 102 is used to transmit the S-polarized light.

[0102] like Figure 5 As shown, a portion of the S-polarized light emitted from the light source module 101 shines onto the user's eyeball 300 through the corrective lens 400. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the stray light suppression component 1022 that can pass through the corrective lens 400 and is imaged on the camera 1021. The diffusely reflected light is the effective light formed without reflection by the corrective lens 400.

[0103] The S-polarized light emitted from the light source module 101 is reflected by the corrective lens 400 and becomes P-polarized light. The P-polarized light is stray light formed after being reflected by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit the S-polarized light, thus blocking the P-polarized light from entering the camera 1021, thereby suppressing the stray light generated by the reflection of the corrective lens 400.

[0104] refer to Figure 6 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. Both the light source module 101 and the image acquisition module 102 are located between the linear polarization layer 2034 and the corrective lens 400 of the optical display system 200. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into left-handed circularly polarized light (LCP), and the stray light suppression component 1022 in the image acquisition module 102 is used to transmit the left-handed circularly polarized light (LCP).

[0105] like Figure 6As shown, a portion of the left-hand circularly polarized light (LCP) emitted from the light source module 101 shines onto the user's eyeball 300 through the corrective lens 400. The left-hand circularly polarized light (LCP) undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the stray light suppression component 1022 that is passable through the corrective lens 400 and is imaged on the camera 1021. The diffusely reflected light is the effective light formed without reflection by the corrective lens 400.

[0106] The left-hand circularly polarized light (LCP) emitted from the light source module 101 is reflected by the corrective lens 400 and becomes right-hand circularly polarized light (RCP). The right-hand circularly polarized light (RCP) is stray light formed after being reflected by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit the left-hand circularly polarized light (LCP), thus naturally blocking the right-hand circularly polarized light (RCP) from entering the camera 1021, thereby achieving the effect of suppressing the stray light generated by the reflection of the corrective lens 400.

[0107] Figure 7 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the corrective lens 400 of the optical display system 200, and the image acquisition module 102 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light. The linear polarization layer 2034 of the optical display system 200 can be used as the stray light suppression component 1022 in the image acquisition module 102. The linear polarization layer 2034 of the optical display system 200 is used to transmit S-polarized light; that is, no additional optical components need to be added in front of the camera 1021.

[0108] like Figure 7 As shown, a portion of the S-polarized light emitted from the light source module 101 is irradiated onto the user's eyeball 300 through the corrective lens 400. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034 of the optical display system 200, becoming S-polarized light. The S-polarized light passes through the lens 2021 and forms an image on the camera 1021. The S-polarized light passing through the lens 2021 is the effective light formed without reflection by the corrective lens 400.

[0109] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The S-polarized light emitted from the light source module 101 is reflected by the corrective lens 400 and becomes P-polarized light, which is stray light formed after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, naturally blocking P-polarized light from entering the camera 1021, thus suppressing stray light generated by reflection from the corrective lens 400.

[0110] Figure 8 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the corrective lens 400 in the optical display system 200, and the image acquisition module 102 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light, and the stray light suppression component 1022 in the image acquisition module 102 can transmit the S-polarized light.

[0111] like Figure 8 As shown, a portion of the S-polarized light emitted from the light source module 101 shines onto the user's eyeball 300 through the corrective lens 400. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the linear polarization layer 2034 that can pass through the corrective lens 400, becoming S-polarized light. The S-polarized light passes through the lens 2021 and the stray light suppression component 1022 to form an image on the camera 1021. The S-polarized light that passes through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0112] When the linear polarization layer 2034 and polarization beam splitter layer 2033 (which can transmit S-polarized light) in the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. The S-polarized light emitted from the light source module 101 is partially reflected by the corrective lens 400 and becomes P-polarized light. Since the linear polarization layer 2034 is not functioning ideally, some P-polarized light passes through both the linear polarization layer 2034 and the lens 2022. The portion of P-polarized light that passes through the linear polarization layer 2034 is stray light formed after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light, naturally blocking P-polarized light from entering the camera 1021, thus suppressing the stray light generated by the reflection from the corrective lens 400.

[0113] Figure 9This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the corrective lens 400 of the optical display system 200, and the image acquisition module 102 is located between the quarter-wave plate layer 2032 and the polarization beam splitter layer 2033. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light. The linear polarization layer 2034 of the optical display system 200 can be used as the stray light suppression component 1022 in the image acquisition module 102. The linear polarization layer 2034 of the optical display system 200 is used to transmit S-polarized light; that is, no additional optical components need to be added in front of the camera 1021.

[0114] like Figure 9 As shown, a portion of the S-polarized light emitted from the light source module 101 is transmitted through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034 of the optical display system 200, becoming S-polarized light. The S-polarized light passes through the lens 2022 and the polarization beam splitter layer 2033 and is imaged on the camera 1021. The S-polarized light that passes through the polarization beam splitter layer 2033 is the effective light formed without reflection by the corrective lens 400.

[0115] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The S-polarized light emitted from the light source module 101 is reflected by the corrective lens 400 and becomes P-polarized light, which is stray light formed after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, naturally blocking P-polarized light from entering the camera 1021, thus suppressing stray light generated by reflection from the corrective lens 400.

[0116] Figure 10 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the corrective lens 400 in the optical display system 200, and the image acquisition module 102 is located between the quarter-wave plate layer 2032 and the polarization beam splitter layer 2033. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light, and the stray light suppression component 1022 in the image acquisition module 102 can transmit the S-polarized light.

[0117] like Figure 10As shown, a portion of the S-polarized light emitted from the light source module 101 shines onto the user's eyeball 300 through the corrective lens 400. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and can then pass through the linear polarization layer 2034 to become S-polarized light. The S-polarized light passes through the lens 2022, the polarization beam splitter layer 2033, and the stray light suppression component 1022 to form an image on the camera 1021. The S-polarized light that passes through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0118] When the linear polarization layer 2034 and polarization beam splitter layer 2033 (which can transmit S-polarized light) in the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. Part of the S-polarized light emitted from the light source module 101 is reflected by the corrective lens 400 and becomes P-polarized light. Since the linear polarization layer 2034 is not functioning ideally, some P-polarized light passes through the linear polarization layer 2034, the lens 2022, and the polarization beam splitter layer 2033. The portion of P-polarized light that passes through the polarization beam splitter layer 2033 is stray light formed after being reflected by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light, naturally blocking P-polarized light from entering the camera 1021, thus suppressing the stray light generated by the reflection from the corrective lens 400.

[0119] Figure 11 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the corrective lens 400 of the optical display system 200, and the image acquisition module 102 is located between the quarter-wave plate layer 2032 and the semi-reflective layer 2031. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light. The linear polarization layer 2034 of the optical display system 200 can be used as the stray light suppression component 1022 in the image acquisition module 102. The linear polarization layer 2034 of the optical display system 200 is used to transmit S-polarized light; that is, no additional optical components need to be added in front of the camera 1021.

[0120] like Figure 11As shown, a portion of the S-polarized light emitted from the light source module 101 is irradiated onto the user's eyeball 300 through the corrective lens 400. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034 of the optical display system 200, becoming S-polarized light. The S-polarized light passes through the lens 2022, the polarization beam splitter layer 2033, and the quarter-wave plate layer 2032, becoming left-handed circularly polarized light (LCP), which is then imaged on the camera 1021. The left-handed circularly polarized light (LCP) that passes through the quarter-wave plate layer 2032 is the effective light formed without reflection by the corrective lens 400.

[0121] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The S-polarized light emitted from the light source module 101 is reflected by the corrective lens 400 and becomes P-polarized light, which is stray light formed after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, naturally blocking P-polarized light from entering the camera 1021, thus suppressing stray light generated by reflection from the corrective lens 400.

[0122] Figure 12 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the corrective lens 400 in the optical display system 200, and the image acquisition module 102 is located between the quarter-wave plate layer 2032 and the semi-reflective layer 2031. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light, and the stray light suppression component 1022 in the image acquisition module 102 can transmit left-handed circularly polarized light (LCP).

[0123] like Figure 12 As shown, a portion of the S-polarized light emitted from the light source module 101 is irradiated onto the user's eyeball 300 through the corrective lens 400. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and can then pass through the linear polarization layer 2034 to become S-polarized light. The S-polarized light passes through the lens 2022, the polarization beam splitter layer 2033, and the quarter-wave plate layer 2032 to become left-handed circularly polarized light (LCP). The left-handed circularly polarized light (LCP) passes through the stray light suppression component 1022 and is imaged on the camera 1021. The left-handed circularly polarized light (LCP) that passes through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0124] When the linear polarization layer 2034 and polarization beam splitter layer 2033 (which can transmit S-polarized light) in the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. The S-polarized light emitted from the light source module 101 is partially reflected by the corrective lens 400 and becomes P-polarized light. When the linear polarization layer 2034 is not functioning ideally, some P-polarized light passes through the linear polarization layer 2034, lens 2022, polarization beam splitter layer 2033, and quarter-wave plate layer 2032, becoming right-hand circularly polarized light (RCP). Right-hand circularly polarized light (RCP) is stray light formed after being reflected by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit left-hand circularly polarized light (LCP), naturally blocking right-hand circularly polarized light (RCP) from entering the camera 1021, thus suppressing the stray light generated by the reflection from the corrective lens 400.

[0125] Figure 13 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the corrective lens 400 of the optical display system 200, and the image acquisition module 102 is located between the display screen 201 and the semi-reflective layer 2031. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light. The linear polarization layer 2034 of the optical display system 200 can be used as the stray light suppression component 1022 in the image acquisition module 102. The linear polarization layer 2034 of the optical display system 200 is used to transmit S-polarized light; that is, no additional optical components need to be added in front of the camera 1021.

[0126] like Figure 13 As shown, a portion of the S-polarized light emitted from the light source module 101 shines onto the user's eyeball 300 through the corrective lens 400. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034 of the optical display system 200, becoming S-polarized light. The S-polarized light passes through the polarization beam splitter layer 2033 and the quarter-wave plate layer 2032, becoming left-handed circularly polarized light (LCP). The left-handed circularly polarized light (LCP) passes through the lens group 202 and the semi-reflective layer 2031, entering the camera 1021 for imaging. The left-handed circularly polarized light (LCP) passing through the semi-reflective layer 2031 is the effective light formed without reflection by the corrective lens 400.

[0127] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The S-polarized light emitted from the light source module 101 is reflected by the corrective lens 400 and becomes P-polarized light, which is stray light formed after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, naturally blocking P-polarized light from entering the camera 1021, thus suppressing stray light generated by reflection from the corrective lens 400.

[0128] Figure 14 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the corrective lens 400 in the optical display system 200, and the image acquisition module 102 is located between the display screen 201 and the semi-reflective layer 2031. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light, and the stray light suppression component 1022 in the image acquisition module 102 can transmit left-handed circularly polarized light (LCP).

[0129] like Figure 14 As shown, a portion of the S-polarized light emitted from the light source module 101 shines onto the user's eyeball 300 through the corrective lens 400. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034, becoming S-polarized light. The S-polarized light then passes through the lens 2022, the polarization beam splitter layer 2033, and the quarter-wave plate layer 2032, becoming left-handed circularly polarized light (LCP). The left-handed circularly polarized light (LCP) passes through the lens group 202, the semi-reflective layer 2031, and the stray light suppression component 1022 to form an image on the camera 1021. The left-handed circularly polarized light (LCP) that passes through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0130] When the linear polarization layer 2034 and the polarization beam splitter layer 2033 (which can transmit S-polarized light) of the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. The S-polarized light emitted from the light source module 101 is partially reflected by the corrective lens 400 and becomes P-polarized light. When the linear polarization layer 2034 is not functioning ideally, some of the P-polarized light passes through the linear polarization layer 2034, lens 2022, polarization beam splitter layer 2033, and quarter-wave plate layer 2032, becoming right-hand circularly polarized light (RCP). The right-hand circularly polarized light (RCP) passes through the lens group 202 and the semi-reflective layer 2031. The right-hand circularly polarized light (RCP) is stray light formed after being reflected by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit left-hand circularly polarized light (LCP) and naturally block right-hand circularly polarized light (RCP) from entering the camera 1021, thereby suppressing stray light generated by the reflection of the correction lens 400.

[0131] Figure 15 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033, and the image acquisition module 102 is located between the linear polarization layer 2034 and the corrective lens 400 in the optical display system 200. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light or circularly polarized light (LCP or RCP) with arbitrary rotation direction. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light.

[0132] refer to Figure 15 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into circularly polarized light (LCP or RCP) in any rotation direction, the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into circularly polarized light.

[0133] like Figure 15As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the stray light suppression component 1022, becoming S-polarized light again, and is imaged on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0134] The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. The S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated by the reflection of the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit the S-polarized light, thus blocking the P-polarized light from entering the camera 1021, thereby suppressing the stray light generated by the reflection of the corrective lens 400.

[0135] Figure 16 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033, and the image acquisition module 102 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033 of the optical display system 200. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light or circularly polarized light (LCP or RCP) with arbitrary rotation direction. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light. The linear polarization layer 2034 of the optical display system 200 can be used as the stray light suppression component 1022 in the image acquisition module 102. Since the linear polarization layer 2034 of the optical display system 200 transmits S-polarized light, no additional optical components need to be added in front of the camera 1021.

[0136] refer to Figure 16When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into circularly polarized light (LCP or RCP) in any rotation direction, the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into circularly polarized light.

[0137] like Figure 16 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the stray light suppression component 1022, becoming S-polarized light again. The S-polarized light passes through the lens 2022 and forms an image on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0138] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The illumination beam emitted from the light source module 101 is converted to S-polarized light by the polarizing component 1021. This S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, thus naturally blocking P-polarized light from entering the camera 1021, thereby suppressing stray light generated by reflection from the corrective lens 400.

[0139] Figure 17This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033, and the image acquisition module 102 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033 of the optical display system 200. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light or circularly polarized light (LCP or RCP) with arbitrary rotation direction. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light.

[0140] refer to Figure 17 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into circularly polarized light (LCP or RCP) in any rotation direction, the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into circularly polarized light.

[0141] like Figure 17 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the stray light suppression component 1022, becoming S-polarized light again. The S-polarized light passes through the lens 2022 and forms an image on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0142] When the linear polarization layer 2034 and polarization beam splitter layer 2033 (which can transmit S-polarized light) in the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. Part of the S-polarized light is reflected by the correcting lens 400 and becomes P-polarized light. Part of the P-polarized light passes through the linear polarization layer 2034 and the lens 2022. The P-polarized light is stray light formed after being reflected by the correcting lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light, which will naturally block the P-polarized light from entering the camera 1021, thereby suppressing the stray light generated by the reflection of the correcting lens 400.

[0143] Figure 18 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033, and the image acquisition module 102 is located between the polarization beam splitter layer 2033 and the quarter-wave plate layer 2032. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light or circularly polarized light (LCP or RCP) with arbitrary rotation direction. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light. The linear polarization layer 2034 of the optical display system 200 can be used as the stray light suppression component 1022 in the image acquisition module 102. Since the linear polarization layer 2034 of the optical display system 200 transmits S-polarized light, no additional optical components need to be added in front of the camera 1021.

[0144] refer to Figure 18 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into circularly polarized light (LCP or RCP) in any rotation direction, the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into circularly polarized light.

[0145] like Figure 18As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the stray light suppression component 1022, becoming S-polarized light again. The S-polarized light passes through lenses 2023 and 2022 and the polarization beam splitter layer 2033, and is imaged on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0146] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The illumination beam emitted from the light source module 101 is converted to S-polarized light by the polarizing component 1021. This S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, thus naturally blocking P-polarized light from entering the camera 1021, thereby suppressing stray light generated by reflection from the corrective lens 400.

[0147] Figure 19 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033, and the image acquisition module 102 is located between the polarization beam splitter layer 2033 and the quarter-wave plate layer 2032. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light or circularly polarized light (LCP or RCP) with arbitrary rotation direction. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light.

[0148] refer to Figure 19When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into circularly polarized light (LCP or RCP) in any rotation direction, the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into circularly polarized light.

[0149] like Figure 19 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light through the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034 (which allows S-polarized light to pass through), becoming S-polarized light again. The S-polarized light passes through lenses 2023 and 2022, the polarization beam splitter layer 2033, and the stray light suppression component 1022, and is imaged on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0150] When the linear polarization layer 2034 and polarization beam splitter layer 2033 (which can transmit S-polarized light) in the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. Part of the S-polarized light is reflected by the correcting lens 400 and becomes P-polarized light. Part of the P-polarized light passes through the linear polarization layer 2034, lenses 2023 and 2022, and the polarization beam splitter layer 2033. The P-polarized light is stray light formed after being reflected by the correcting lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light, naturally blocking the P-polarized light from entering the camera 1021, thereby suppressing the stray light generated by the reflection of the correcting lens 400.

[0151] Figure 20This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033, and the image acquisition module 102 is located between the quarter-wave plate layer 2032 and the semi-reflective layer 2031. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light or circularly polarized light (LCP or RCP) with arbitrary rotation direction. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light. The linear polarization layer 2034 of the optical display system 200 can be used as the stray light suppression component 1022 in the image acquisition module 102. Since the linear polarization layer 2034 of the optical display system 200 transmits S-polarized light, no additional optical components need to be added in front of the camera 1021.

[0152] refer to Figure 20 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into circularly polarized light (LCP or RCP) in any rotation direction, the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into circularly polarized light.

[0153] like Figure 20 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light through the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the stray light suppression component 1022, becoming S-polarized light again. The S-polarized light passes through lenses 2023 and 2022 and the polarization beam splitter layer 2033. Finally, the S-polarized light passes through the quarter-wave plate layer 2032, becoming left-handed circularly polarized light and forming an image on the camera 1021. The left-handed circularly polarized light passing through the quarter-wave plate layer 2032 is the effective light formed without reflection by the corrective lens 400.

[0154] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The illumination beam emitted from the light source module 101 is converted to S-polarized light by the polarizing component 1021. This S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, thus naturally blocking P-polarized light from entering the camera 1021, thereby suppressing stray light generated by reflection from the corrective lens 400.

[0155] Figure 21 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033, and the image acquisition module 102 is located between the quarter-wave plate layer 2032 and the semi-reflective layer 2031. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-linearly polarized light or circularly polarized light (LCP or RCP) with arbitrary rotation direction. The stray light suppression component 1022 in the image acquisition module 102 can transmit left-handed circularly polarized light (LCP).

[0156] refer to Figure 21 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into circularly polarized light (LCP or RCP) in any rotation direction, the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into circularly polarized light.

[0157] like Figure 21As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034 (which allows S-polarized light to pass through), becoming S-polarized light again. The S-polarized light passes through lenses 2023 and 2022, the polarization beam splitter layer 2033, and then through the quarter-wave plate layer 2032, becoming left-handed circularly polarized light (LCP). The left-handed circularly polarized light (LCP) passes through the stray light suppression component 1022 and is imaged on the camera 1021. The left-handed circularly polarized light (LCP) passing through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0158] When the linear polarization layer 2034 and polarization beam splitter layer 2033 (which can transmit S-polarized light) in the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. Part of the S-polarized light is reflected by the correcting lens 400 and becomes P-polarized light. Part of the P-polarized light passes through the linear polarization layer 2034, lenses 2023 and 2022, and the polarization beam splitter layer 2033. The P-polarized light passes through the quarter-wave plate layer 2032 and becomes right-hand circularly polarized light (RCP). The right-hand circularly polarized light (RCP) is stray light formed after being reflected by the correcting lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit left-hand circularly polarized light (LCP), which will naturally block the right-hand circularly polarized light (RCP) from entering the camera 1021, thereby suppressing the stray light generated by the reflection of the correcting lens 400.

[0159] Figure 22 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the polarization beam splitter layer 2033 and the quarter-wave plate layer 2032, and the image acquisition module 102 is located between the linear polarization layer 2034 and the corrective lens 400 of the optical display system 200. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light or circularly polarized light (LCP or RCP) with arbitrary rotation direction. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light.

[0160] refer to Figure 22When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into circularly polarized light (LCP or RCP) in any rotation direction, the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into circularly polarized light.

[0161] like Figure 22 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the stray light suppression component 1022, becoming S-polarized light again, and is imaged on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0162] The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. The S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated by the reflection of the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit the S-polarized light, thus blocking the P-polarized light from entering the camera 1021, thereby suppressing the stray light generated by the reflection of the corrective lens 400.

[0163] Figure 23This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the polarization beam splitter layer 2033 and the quarter-wave plate layer 2032, and the image acquisition module 102 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033 of the optical display system 200. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light or circularly polarized light (LCP or RCP) with arbitrary rotation direction. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light. The linear polarization layer 2034 of the optical display system 200 can be used as the stray light suppression component 1022 in the image acquisition module 102. Since the linear polarization layer 2034 of the optical display system 200 transmits S-polarized light, no additional optical components need to be added in front of the camera 1021.

[0164] refer to Figure 23 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into circularly polarized light (LCP or RCP) in any rotation direction, the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into circularly polarized light.

[0165] like Figure 23 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the stray light suppression component 1022, becoming S-polarized light again. The S-polarized light passes through the lens 2023 and forms an image on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection from the corrective lens 400.

[0166] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The illumination beam emitted from the light source module 101 is converted to S-polarized light by the polarizing component 1021. This S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, thus naturally blocking P-polarized light from entering the camera 1021, thereby suppressing stray light generated by reflection from the corrective lens 400.

[0167] Figure 24 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the polarization beam splitter layer 2033 and the quarter-wave plate layer 2032, and the image acquisition module 102 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033 of the optical display system 200. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light or circularly polarized light (LCP or RCP) with arbitrary rotation direction. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light.

[0168] refer to Figure 24 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into circularly polarized light (LCP or RCP) in any rotation direction, the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into circularly polarized light.

[0169] like Figure 24As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the stray light suppression component 1022, becoming S-polarized light again. The S-polarized light passes through the lens 2023 and forms an image on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection from the corrective lens 400.

[0170] When the linear polarization layer 2034 and polarization beam splitter layer 2033 (which can transmit S-polarized light) in the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. Part of the S-polarized light is reflected by the correcting lens 400 and becomes P-polarized light. Part of the P-polarized light passes through the linear polarization layer 2034 and the lens 2023. The P-polarized light is stray light formed after being reflected by the correcting lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light, which will naturally block the P-polarized light from entering the camera 1021, thereby suppressing the stray light generated by the reflection of the correcting lens 400.

[0171] Figure 25 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the polarization beam splitter layer 2033 and the quarter-wave plate layer 2032, and the image acquisition module 102 is located between the display screen 201 and the semi-reflective layer 2031. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light or circularly polarized light (LCP or RCP) with arbitrary rotation direction. The stray light suppression component 1022 in the image acquisition module 102 is transparent to S-polarized light.

[0172] refer to Figure 25When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into circularly polarized light (LCP or RCP) in any rotation direction, the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into circularly polarized light.

[0173] like Figure 25 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034 (which allows S-polarized light to pass through), becoming S-polarized light again. The S-polarized light passes through lenses 2021 and 2022, the polarization beam splitter layer 2033, and then through the quarter-wave plate layer 2032, becoming left-handed circularly polarized light (LCP). The left-handed circularly polarized light (LCP) passes through the semi-reflective layer 2031 and is imaged on the camera 1021. The left-handed circularly polarized light (LCP) passing through the semi-reflective layer 2031 is the effective light formed without reflection by the corrective lens 400.

[0174] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The illumination beam emitted from the light source module 101 is converted to S-polarized light by the polarizing component 1021. This S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, thus naturally blocking P-polarized light from entering the camera 1021, thereby suppressing stray light generated by reflection from the corrective lens 400.

[0175] Figure 26This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light, according to one embodiment. The light source module 101 is located between the polarization beam splitter layer 2033 and the quarter-wave plate layer 2032, and the image acquisition module 102 is located between the display screen 201 and the semi-reflective layer 2031. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into S-polarized light or circularly polarized light (LCP or RCP) with arbitrary rotation direction. The stray light suppression component 1022 in the image acquisition module 102 can transmit left-handed circularly polarized light (LCP).

[0176] refer to Figure 26 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into circularly polarized light (LCP or RCP) in any rotation direction, the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into circularly polarized light.

[0177] like Figure 26 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034 (which allows S-polarized light to pass through), becoming S-polarized light again. The S-polarized light passes through lenses 2021 and 2022, the polarization beam splitter layer 2033, and then through the quarter-wave plate layer 2032, becoming left-handed circularly polarized light (LCP). The left-handed circularly polarized light (LCP) passes through the semi-reflective layer 2031 and the stray light suppression component 1022, and is imaged on the camera 1021. The left-handed circularly polarized light (LCP) that passes through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0178] When the linear polarization layer 2034 and the polarization beam splitter layer 2033 (which can transmit S-polarized light) of the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. Part of the S-polarized light is reflected by the correcting lens 400 and becomes P-polarized light. Part of the P-polarized light passes through the linear polarization layer 2034, lenses 2021 and 2022, and the polarization beam splitter layer 2033. The P-polarized light passes through the quarter-wave plate layer 2032 and becomes right-hand circularly polarized light (RCP), which then passes through the semi-reflective layer 2031. The right-hand circularly polarized light (RCP) is stray light formed after being reflected by the correcting lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit left-hand circularly polarized light (LCP) and naturally block right-hand circularly polarized light (RCP) from entering the camera 1021, thereby suppressing stray light generated by the reflection of the correction lens 400.

[0179] Figure 27 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the quarter-wave plate layer 2032 and the semi-reflective layer 2031, and the image acquisition module 102 is located between the linear polarization layer 2034 and the corrective lens 400 of the optical display system 200. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into left-handed circularly polarized light (LCP) or linearly polarized light with arbitrary vibration direction (S-polarized light or P-polarized light). The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light.

[0180] refer to Figure 27 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200, while the polarizing component 1012a can be placed in front of the light source 1011 or not in front of the light source 1011 in practical applications (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into left-hand circularly polarized light (LCP), the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into left-hand circularly polarized light (LCP).

[0181] like Figure 27As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the stray light suppression component 1022, becoming S-polarized light again, and is imaged on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0182] The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. The S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated by the reflection of the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit the S-polarized light, thus blocking the P-polarized light from entering the camera 1021, thereby suppressing the stray light generated by the reflection of the corrective lens 400.

[0183] Figure 28 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the quarter-wave plate layer 2032 and the semi-reflective layer 2031, and the image acquisition module 102 is located between the quarter-wave plate layer 2032 and the polarization beam splitter layer 2033. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into left-handed circularly polarized light (LCP) or linearly polarized light with arbitrary vibration direction (S-polarized light or P-polarized light). The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light. The linear polarization layer 2034 of the optical display system 200 can be used as the stray light suppression component 1022 in the image acquisition module 102. The linear polarization layer 2034 of the optical display system 200 is used to transmit S-polarized light; that is, no additional optical components need to be added in front of the camera 1021.

[0184] refer to Figure 28When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200, while the polarizing component 1012a can be placed in front of the light source 1011 or not in front of the light source 1011 in practical applications (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into left-hand circularly polarized light (LCP), the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into left-hand circularly polarized light (LCP).

[0185] like Figure 28 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the stray light suppression component 1022, becoming S-polarized light again. The S-polarized light passes through the lens 2023 and the polarization beam splitter layer 2033 and forms an image on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0186] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The illumination beam emitted from the light source module 101 is converted to S-polarized light by the polarizing component 1021. This S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, thus naturally blocking P-polarized light from entering the camera 1021, thereby suppressing stray light generated by reflection from the corrective lens 400.

[0187] Figure 29This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the quarter-wave plate layer 2032 and the semi-reflective layer 2031, and the image acquisition module 102 is located between the quarter-wave plate layer 2032 and the polarization beam splitter layer 2033 of the optical display system 200. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into left-handed circularly polarized light (LCP) or linearly polarized light with arbitrary vibration direction (S-polarized light or P-polarized light). The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light.

[0188] refer to Figure 29 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200, while the polarizing component 1012a can be placed in front of the light source 1011 or not in front of the light source 1011 in practical applications (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into left-hand circularly polarized light (LCP), the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into left-hand circularly polarized light (LCP).

[0189] like Figure 29 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034, becoming S-polarized light again. The S-polarized light then passes through the lens 2023, the polarization beam splitter layer 2033, and the stray light suppression component 1022, and is imaged on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection from the corrective lens 400.

[0190] When the linear polarization layer 2034 and polarization beam splitter layer 2033 (which can transmit S-polarized light) in the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. Part of the S-polarized light is reflected by the correcting lens 400 and becomes P-polarized light. Part of the P-polarized light passes through the linear polarization layer 2034, the lens 2023, and the polarization beam splitter layer 2033. The P-polarized light is stray light formed after being reflected by the correcting lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light, which will naturally block the P-polarized light from entering the camera 1021, thereby suppressing the stray light generated by the reflection of the correcting lens 400.

[0191] Figure 30 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the quarter-wave plate layer 2032 and the semi-reflective layer 2031, and the image acquisition module 102 is located between the quarter-wave plate layer 2032 and the semi-reflective layer 2031. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into left-handed circularly polarized light (LCP) or linearly polarized light with arbitrary vibration direction (S-polarized light or P-polarized light). The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light.

[0192] refer to Figure 30 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200, while the polarizing component 1012a can be placed in front of the light source 1011 or not in front of the light source 1011 in practical applications (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into left-hand circularly polarized light (LCP), the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into left-hand circularly polarized light (LCP).

[0193] like Figure 30As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light through the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034 (which allows S-polarized light to pass through), becoming S-polarized light again. The S-polarized light passes through the lens 2022 and the polarization beam splitter layer 2033, and then through the quarter-wave plate layer 2032, becoming left-handed circularly polarized light (LCP) and forming an image on the camera 1021. The left-handed circularly polarized light (LCP) passing through the quarter-wave plate layer 2032 is the effective light formed without reflection by the corrective lens 400.

[0194] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The illumination beam emitted from the light source module 101 is converted to S-polarized light by the polarizing component 1021. This S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, thus naturally blocking P-polarized light from entering the camera 1021, thereby suppressing stray light generated by reflection from the corrective lens 400.

[0195] Figure 31 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the quarter-wave plate layer 2032 and the semi-reflective layer 2031, and the image acquisition module 102 is located between the quarter-wave plate layer 2032 and the semi-reflective layer 2031. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into left-handed circularly polarized light (LCP) or linearly polarized light with arbitrary vibration direction (S-polarized light or P-polarized light). The stray light suppression component 1022 in the image acquisition module 102 can transmit left-handed circularly polarized light (LCP).

[0196] refer to Figure 31When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into left-hand circularly polarized light (LCP), the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into left-hand circularly polarized light.

[0197] like Figure 31 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034 (which allows S-polarized light to pass through), becoming S-polarized light again. The S-polarized light passes through the lens 2022 and the polarization beam splitter layer 2033, and then through the quarter-wave plate layer 2032, becoming left-handed circularly polarized light (LCP). The left-handed circularly polarized light (LCP) passes through the stray light suppression component 1022 and is imaged on the camera 1021. The left-handed circularly polarized light (LCP) that passes through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0198] When the linear polarization layer 2034 and polarization beam splitter layer 2033 (which can transmit S-polarized light) in the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. Part of the S-polarized light is reflected by the correcting lens 400 and becomes P-polarized light. Part of the P-polarized light passes through the linear polarization layer 2034, the lens 2022, and the polarization beam splitter layer 2033. The P-polarized light passes through the quarter-wave plate layer 2032 and becomes right-hand circularly polarized light (RCP). The right-hand circularly polarized light (RCP) is stray light formed after being reflected by the correcting lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit left-hand circularly polarized light (LCP), which will naturally block the right-hand circularly polarized light (RCP) from entering the camera 1021, thereby suppressing the stray light generated by the reflection of the correcting lens 400.

[0199] Figure 32 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the display screen 201 and the semi-reflective layer 2031, and the image acquisition module 102 is located between the linear polarization layer 2034 and the corrective lens 400 of the optical display system 200. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into left-handed circularly polarized light (LCP) or linearly polarized light with arbitrary vibration direction (S-polarized light or P-polarized light). The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light.

[0200] refer to Figure 32 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200, while the polarizing component 1012a can be placed in front of the light source 1011 or not in front of the light source 1011 in practical applications (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into left-hand circularly polarized light (LCP), the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into left-hand circularly polarized light (LCP).

[0201] like Figure 32 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the stray light suppression component 1022, becoming S-polarized light again, and is imaged on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0202] The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. The S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated by the reflection of the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit the S-polarized light, thus blocking the P-polarized light from entering the camera 1021, thereby suppressing the stray light generated by the reflection of the corrective lens 400.

[0203] Figure 33 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the display screen 201 and the semi-reflective layer 2031, and the image acquisition module 102 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into left-handed circularly polarized light (LCP) or linearly polarized light with arbitrary vibration direction (S-polarized light or P-polarized light). The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light. The linear polarization layer 2034 of the optical display system 200 can be used as the stray light suppression component 1022 in the image acquisition module 102. The linear polarization layer 2034 of the optical display system 200 is used to transmit S-polarized light, meaning that no additional optical components need to be added in front of the camera 1021.

[0204] refer to Figure 33 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200, while the polarizing component 1012a can be placed in front of the light source 1011 or not in front of the light source 1011 in practical applications (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into left-hand circularly polarized light (LCP), the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into left-hand circularly polarized light (LCP).

[0205] like Figure 33As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the stray light suppression component 1022, becoming S-polarized light again. The S-polarized light passes through the lens 2023 and the polarization beam splitter layer 2033 and forms an image on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0206] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The illumination beam emitted from the light source module 101 is converted to S-polarized light by the polarizing component 1021. This S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, thus naturally blocking P-polarized light from entering the camera 1021, thereby suppressing stray light generated by reflection from the corrective lens 400.

[0207] Figure 34 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. The light source module 101 is located between the display screen 201 and the semi-reflective layer 2031, and the image acquisition module 102 is located between the linear polarization layer 2034 and the polarization beam splitter layer 2033. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into left-handed circularly polarized light (LCP) or linearly polarized light with arbitrary vibration direction (S-polarized light or P-polarized light). The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light.

[0208] refer to Figure 34When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200, while the polarizing component 1012a can be placed in front of the light source 1011 or not in front of the light source 1011 in practical applications (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into left-hand circularly polarized light (LCP), the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into left-hand circularly polarized light (LCP).

[0209] like Figure 34 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034, becoming S-polarized light again. The S-polarized light passes through the lens 2022 and the stray light suppression component 1022 and forms an image on the camera 1021. The S-polarized light passing through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0210] When the linear polarization layer 2034 and polarization beam splitter layer 2033 (which can transmit S-polarized light) in the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. Part of the S-polarized light is reflected by the correcting lens 400 and becomes P-polarized light. Part of the P-polarized light passes through the linear polarization layer 2034 and the lens 2022. The P-polarized light is stray light formed after being reflected by the correcting lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light, which will naturally block the P-polarized light from entering the camera 1021, thereby suppressing the stray light generated by the reflection of the correcting lens 400.

[0211] Figure 35This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. A light source module 101 is located between a display screen 201 and a semi-reflective layer 2031, and an image acquisition module 102 is located between the display screen 201 and the semi-reflective layer 2031. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into left-handed circularly polarized light (LCP) or linearly polarized light with arbitrary vibration direction (S-polarized light or P-polarized light). The stray light suppression component 1022 in the image acquisition module 102 can transmit S-polarized light.

[0212] refer to Figure 35 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200, while the polarizing component 1012a can be placed in front of the light source 1011 or not in front of the light source 1011 in practical applications (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into left-hand circularly polarized light (LCP), the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into left-hand circularly polarized light (LCP).

[0213] like Figure 35 As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034 (which allows S-polarized light to pass through) and becomes S-polarized light again. The S-polarized light passes through the polarization beam splitter layer 2033 and then through the quarter-wave plate layer 2032, becoming left-handed circularly polarized light (LCP). The left-handed circularly polarized light (LCP) passes through the lens group 202 and the semi-reflective layer 2031 and is imaged on the camera 1021. The left-handed circularly polarized light (LCP) passing through the semi-reflective layer 2031 is the effective light formed without reflection by the corrective lens 400.

[0214] In an ideal scenario, the linear polarization layer 2034 of the optical display system 200 (which allows S-polarized light to pass through) can transmit S-polarized light while completely blocking P-polarized light. The illumination beam emitted from the light source module 101 is converted to S-polarized light by the polarizing component 1021. This S-polarized light is then reflected by the corrective lens 400 and becomes P-polarized light, which is stray light generated after reflection by the corrective lens 400. The stray light suppression component 1022 in the image acquisition module 102 (or, in other words, through the linear polarization layer 2034 of the optical display system 200) allows S-polarized light to pass through, thus naturally blocking P-polarized light from entering the camera 1021, thereby suppressing stray light generated by reflection from the corrective lens 400.

[0215] Figure 36 This application presents a schematic diagram of the optical path principle of a near-eye display device for suppressing stray light according to one embodiment. A light source module 101 is located between a display screen 201 and a semi-reflective layer 2031, and an image acquisition module 102 is located between the display screen 201 and the semi-reflective layer 2031. The polarizing component 1012 in the light source module 101 is used to convert the illumination light emitted by the light source 1011 into left-handed circularly polarized light (LCP) or linearly polarized light with arbitrary vibration direction (S-polarized light or P-polarized light). The stray light suppression component 1022 in the image acquisition module 102 can transmit left-handed circularly polarized light (LCP).

[0216] refer to Figure 36 When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into S-polarized light, the polarizing component 1012a can be placed in front of the light source 1011, or the linear polarization layer 2034 of the optical display system 200 (e.g., the linear polarization layer 2034 can transmit S-polarized light) can be regarded as the polarizing component 1012b. That is to say, the polarizing component 1012 can be placed in different positions. The polarizing component 1012b is required for the linear polarization layer 2034 of the optical display system 200. In practical applications, the polarizing component 1012a can be placed in front of the light source 1011 or not (the case where the polarizing component 1012a is not placed in front of the light source 1011 is not shown in the figure). When the polarizing component 1012 converts the illumination light emitted by the light source 1011 into left-hand circularly polarized light (LCP), the polarizing component 1012a needs to be placed in front of the light source 1011 to convert the illumination beam into left-hand circularly polarized light.

[0217] like Figure 36As shown, the illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021 or by the combined action of the polarizing component 1021 and some optical elements in the optical path folding component 203. A portion of the S-polarized light passes through the corrective lens 400 and illuminates the user's eyeball 300. The S-polarized light undergoes diffuse reflection on the surface of the user's eyeball 300. The diffusely reflected light passes through the corrective lens 400 and the linear polarization layer 2034 (which allows S-polarized light to pass through) and becomes S-polarized light again. The S-polarized light passes through the polarization beam splitter layer 2033 and then through the quarter-wave plate layer 2032, becoming left-handed circularly polarized light (LCP). The left-handed circularly polarized light (LCP) passes through the lens group 202, the semi-reflective layer 2031, and the stray light suppression component 1022 and is imaged on the camera 1021. The left-handed circularly polarized light (LCP) that passes through the stray light suppression component 1022 is the effective light formed without reflection by the corrective lens 400.

[0218] When the linear polarization layer 2034 and the polarization beam splitter layer 2033 (which can transmit S-polarized light) of the optical display system 200 are not functioning ideally, the linear polarization layer 2034 will transmit a portion of the P-polarized light. The illumination beam emitted from the light source module 101 is converted into S-polarized light by the polarizing component 1021. Part of the S-polarized light is reflected by the correcting lens 400 and becomes P-polarized light. Part of the P-polarized light passes through the linear polarization layer 2034 and the polarization beam splitter layer 2033. The P-polarized light passes through the quarter-wave plate layer 2032 and becomes right-hand circularly polarized light (RCP). The right-hand circularly polarized light (RCP) passes through the lens group 202 and the semi-reflective layer 2031. The right-hand circularly polarized light (RCP) is stray light formed after being reflected by the correcting lens 400. The stray light suppression component 1022 in the image acquisition module 102 can transmit left-hand circularly polarized light (LCP) and naturally block right-hand circularly polarized light (RCP) from entering the camera 1021, thereby suppressing stray light generated by the reflection of the correction lens 400.

[0219] Figure 37 This is a schematic diagram of the structure of a near-eye display device according to an embodiment of this application, as shown below. Figure 37 As shown, a near-eye display device 11 includes a near-eye display device 00 for suppressing stray light according to any embodiment of this application.

[0220] The near-eye display device 11 can be a pancake VR device.

[0221] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A near-eye display device, characterized in that, include: An eye-tracking system, an optical display system, and a corrective lens are included. The eye-tracking system is configured within the optical display system, and the corrective lens is positioned between the optical display system and the eyeball. The eye-tracking system includes a light source module and an image acquisition module. The light source module is used to emit polarized light; The image acquisition module includes a stray light suppression component, which can suppress at least a portion of stray light from entering the image acquisition module. The stray light is polarized light reflected by the corrective lens. The polarization properties of the light transmitted through the stray light suppression component are different from the polarization properties of the stray light reaching the image acquisition module.

2. The near-eye display device for suppressing stray light according to claim 1, wherein the optical display system comprises a display screen, a lens group, and an optical path folding assembly; in the direction from the display screen to the lens group, the optical path folding assembly sequentially comprises a semi-reflective layer, a quarter-wave plate layer, a polarization beam splitter layer, and a linear polarization layer.

3. The near-eye display device for suppressing stray light according to claim 2, characterized in that, The light source module includes a light source and a polarizing component. The light source is used to emit an illumination beam, and the polarizing component is used to convert the illumination beam into polarized light. The polarizing component includes a circular polarizing component or a linear polarizing component.

4. The near-eye display device for suppressing stray light according to claim 3, characterized in that, The polarizing component is at least one optical element in the optical path folding component, and the at least one optical element is used to convert the illumination beam into polarized light.

5. The near-eye display device for suppressing stray light according to claim 2, characterized in that, The light source module includes a polarized light source, which is used to emit polarized light.

6. The near-eye display device for suppressing stray light according to claim 3, characterized in that, The polarizing component is a circular polarizing component, which is used to convert the illumination beam into circularly polarized light.

7. The near-eye display device for suppressing stray light according to claim 6, characterized in that, The rotation direction of the circularly polarized light is the same as the rotation direction of the circularly polarized light that can be transmitted after the combination of the polarization beam splitter layer and the quarter-wave plate layer or the linear polarization layer and the quarter-wave plate layer in the optical path folding assembly.

8. The near-eye display device for suppressing stray light according to claim 3, characterized in that, The polarizing component is a linear polarizing component, which is used to convert the illumination beam into linearly polarized light.

9. The near-eye display device for suppressing stray light according to claim 8, characterized in that, The vibration direction of the linearly polarized light is the same as the vibration direction of the linearly polarized light that can be transmitted through the polarization beam splitter or linear polarization layer in the optical path folding structure.

10. The near-eye display device for suppressing stray light according to any one of claims 3-9, characterized in that, The stray light suppression component is at least one optical element in the optical path folding component, and the at least one optical element is used to prevent polarized light reflected from the correction lens from entering the image acquisition module.

11. The near-eye display device for suppressing stray light according to any one of claims 3-9, characterized in that, The polarized light includes linearly polarized light, and the stray light suppression component can transmit polarized light that is in the same direction as the vibration of the linearly polarized light.

12. The near-eye display device for suppressing stray light according to any one of claims 3-9, characterized in that, The polarized light includes circularly polarized light, and the stray light suppression component can transmit polarized light that is in the same direction of rotation as the circularly polarized light.

13. The near-eye display device for suppressing stray light according to any one of claims 3-9, characterized in that, The polarized light includes linearly polarized light, and the stray light suppression component can transmit polarized light with a vibration direction different from that of the linearly polarized light.

14. The near-eye display device for suppressing stray light according to any one of claims 3-9, characterized in that, The polarized light includes circularly polarized light, and the stray light suppression component can transmit polarized light with a different rotation direction than the circularly polarized light.

15. The near-eye display device for suppressing stray light according to any one of claims 3-9, characterized in that, The vibration direction of the linearly polarized light that can be transmitted through the stray light suppression component is the same as the vibration direction of the linearly polarized light that can be transmitted through the polarization beam splitter or linear polarization layer in the optical path folding component.

16. The near-eye display device for suppressing stray light according to any one of claims 3-9, characterized in that, The vibration direction of the linearly polarized light that can be transmitted through the stray light suppression component is different from the vibration direction of the linearly polarized light that can be transmitted through the polarization beam splitter or linear polarization layer in the optical path folding component.

17. The near-eye display device for suppressing stray light according to any one of claims 3-9, characterized in that, The direction of rotation of the circularly polarized light that can be transmitted by the stray light suppression component is the same as the direction of rotation of the circularly polarized light that can be transmitted after the combination of the polarization beam splitter layer and the quarter-wave plate layer or the combination of the linear polarization layer and the quarter-wave plate layer in the optical path folding component.

18. The near-eye display device for suppressing stray light according to any one of claims 3-9, characterized in that, The direction of rotation of the circularly polarized light that can be transmitted by the stray light suppression component is opposite to the direction of rotation of the circularly polarized light that can be transmitted by the combination of the polarization beam splitter layer and the quarter-wave plate layer or the combination of the linear polarization layer and the quarter-wave plate layer in the optical path folding component.

19. A near-eye display device, characterized in that, Including the near-eye display device for suppressing stray light as described in any one of claims 1-18.

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