Glasses module and augmented reality equipment

Abstract

The invention discloses a glasses module and augmented reality equipment, and relates to the technical field of augmented reality, the glasses module comprises a waveguide lens and an optical machine module integrating a light source, a light splitting assembly, a left polarization beam splitting part and a right polarization beam splitting part, the light source is arranged towards the light splitting assembly, the light splitting assembly is arranged between the left polarization beam splitting part and the right polarization beam splitting part, and the waveguide lens is arranged on the waveguide lens. A left light-emitting surface of the left polarization beam splitter is arranged towards a left eye area of the waveguide lens, and a right light-emitting surface of the right polarization beam splitter is arranged towards a right eye area of the waveguide lens; the light source is divided into first polarized light and second polarized light through the light splitting assembly, the first polarized light is converted into the second polarized light through the polarization conversion surface of the left polarization beam splitter to be projected to a left eye area facing the left light-emitting surface, and the second polarized light is projected to a right eye area facing the right light-emitting surface through the right polarization beam splitter. The power consumption of the glasses module is reduced to reduce the demand on the battery capacity, so that the weight of the glasses module is reduced to improve the wearing experience of a user.

Description

Technical Field

[0001] The present application relates to the field of extended reality technology, and in particular to a glasses module and an extended reality device. Background Art

[0002] With the continuous development of XR (eXtended Reality) technology, glasses modules have become an important application carrier of XR technology, and users have put forward higher requirements for the low-power design of glasses modules.

[0003] In order to avoid the problem of wire dragging caused by the separation of the power supply and the main body of the glasses, most of the current glasses modules adopt an integrated glasses structure and are equipped with dual optical modules, that is, the optical modules corresponding to the left and right lenses provide incident light sources to provide users with a three-dimensional and clear visual experience. However, although the integrated design of the glasses module enhances the display effect, the configuration of the dual light sources also significantly increases the power consumption of the glasses module, and thus requires a large-capacity battery to ensure sufficient battery life, which increases the weight of the glasses module and seriously affects the user's wearing experience.

[0004] Therefore, how to reduce the power consumption of the glasses module to reduce the demand for battery capacity is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The main purpose of this application is to provide a glasses module and an extended reality device, aiming to reduce the power consumption of the glasses module to reduce the demand for battery capacity.

[0006] To achieve the above-mentioned object, the present application provides a glasses module, the glasses module includes a waveguide lens and an optical-mechanical module, the optical-mechanical module includes a light source, a beam splitter, a left polarization beam splitter and a right polarization beam splitter, the light source is arranged toward the beam splitter, the beam splitter is arranged between the left polarization beam splitter and the right polarization beam splitter, the left light emitting surface of the left polarization beam splitter is arranged toward the left eye area of ​​the waveguide lens, and the right light emitting surface of the right polarization beam splitter is arranged toward the right eye area of ​​the waveguide lens;

[0007] The light source is divided into a first polarized light and a second polarized light by the beam splitter component. The first polarized light is converted into the second polarized light by the polarization conversion surface of the left polarization beam splitter and projected to the left eye area facing the left light output surface. The second polarized light is projected to the right eye area facing the right light output surface by the right polarization beam splitter.

[0008] In one embodiment, the left polarization beam splitter comprises a left relay lens, a left polarization beam splitting module, a left lens and a left modulation screen;

[0009] The left relay lens and the left lens are respectively arranged on both sides of the left polarization splitting module, the left relay lens is arranged toward the left reflective mirror surface of the splitting component, the left lens is arranged with the left modulation screen on the side away from the left polarization splitting module, and the left light emitting surface of the left polarization splitting module constitutes the left light emitting surface of the left polarization beam splitter and is arranged toward the left eye area of ​​the waveguide lens;

[0010] The first polarized light passes through the optical path from the left reflective mirror to the left relay lens and is projected onto the phase conversion surface of the left polarization beam splitting module to be converted into the second polarized light. The second polarized light passes through the left lens and converges onto the left modulation screen to be modulated into polarized image light. The polarized image light is the first polarized light carrying the projection light image of the light source.

[0011] The polarized image light passes through the left modulation screen and the left lens and is projected to the left splitting surface of the left polarization splitting module, and is reflected by the left splitting surface to the phase delay surface of the left polarization splitting module for secondary phase delay to become the second polarized light, and then passes through the left splitting surface and is projected to the left eye area toward which the left light emitting surface faces; wherein,

[0012] The phase delay surface of the left polarization beam splitting module is the polarization conversion surface of the left polarization beam splitter.

[0013] In one embodiment, the left polarization beam splitter further includes a left exit pupil lens, and the left polarization beam splitting module further includes a first polarization beam splitting prism, a second polarization beam splitting prism and a left reflector;

[0014] The hypotenuse of the first polarization beam splitter prism and the hypotenuse of the second polarization beam splitter prism are arranged opposite to each other to form a left rectangular prism arranged between the left relay lens and the left lens;

[0015] A polarization beam splitting film is fixedly connected between the hypotenuse of the first polarization beam splitting prism and the hypotenuse of the second polarization beam splitting prism to form a left beam splitting surface of the left polarization beam splitting module; a phase conversion film is attached to a side of the first polarization beam splitting prism facing the left relay lens to form a phase conversion surface of the left polarization beam splitting module; a phase delay film is attached to a side of the second polarization beam splitting prism facing the left reflector to form a phase delay surface of the left polarization beam splitting module;

[0016] The left exit pupil lens is arranged on a side of the first polarization beam splitting prism away from the phase delay surface, and the side of the first polarization beam splitting prism away from the phase delay surface constitutes a left light emitting surface of the left polarization beam splitting module.

[0017] In one embodiment, the right polarization beam splitter comprises a right relay lens, a right polarization beam splitting module, a right lens and a right modulation screen;

[0018] The right relay lens and the right lens are respectively arranged on both sides of the right polarization splitting module, the right relay lens is arranged toward the right reflective mirror surface of the splitting component, the right modulation screen is arranged on the side of the right lens away from the right polarization splitting module, and the right light emitting surface of the right polarization splitting module constitutes the right light emitting surface of the right polarization beam splitter and is arranged toward the right eye area of ​​the waveguide lens;

[0019] The second polarized light passes through the right reflective mirror, the right relay lens, the right polarization beam splitting module and the right lens in sequence, and is projected onto the right modulation screen, and the second polarized light is modulated into polarized image light by the right modulation screen, and the polarized image light is the first polarized light carrying the projection light image of the light source;

[0020] The polarized image light passes through the right modulation screen and the right lens and is projected onto the right splitting surface of the right polarization splitting module, and is reflected by the right splitting surface to the phase delay surface of the right polarization splitting module for secondary phase delay to become the second polarized light, and then passes through the right splitting surface and is projected onto the right eye area toward which the right light exit surface faces.

[0021] In one embodiment, the right polarization beam splitter further includes a right exit pupil lens, and the right polarization beam splitting module further includes a third polarization beam splitting prism, a fourth polarization beam splitting prism and a right reflector;

[0022] The hypotenuse of the third polarization beam splitter prism and the hypotenuse of the fourth polarization beam splitter prism are arranged opposite to each other to form a right rectangular prism arranged between the right relay lens and the right lens.

[0023] A polarization splitting film is fixedly connected between the hypotenuse of the third polarization splitting prism and the hypotenuse of the fourth polarization splitting prism to form a right splitting surface of the right polarization splitting module, and a phase delay film is attached to the side of the fourth polarization splitting prism facing the right reflector to form a phase delay surface of the right polarization splitting module;

[0024] The right exit pupil lens is arranged on a side of the third polarization beam splitting prism away from the phase delay surface of the right polarization beam splitting module, and the side of the third polarization beam splitting prism away from the phase delay surface of the right polarization beam splitting module constitutes a right light exit surface of the right polarization beam splitting module.

[0025] In one embodiment, the beam splitting component includes a beam splitting prism, the beam splitting surface of the beam splitting prism constitutes the beam splitting mirror surface of the beam splitting component and is arranged toward the light source, the total reflection surface of the beam splitting prism is arranged on the opposite side of the beam splitting surface, a polarization beam splitting film is attached to the beam splitting surface, and the total reflection surface is coated with an anti-reflection film;

[0026] The beam splitter prism is configured to split the light source into mutually perpendicular first polarized light and second polarized light through the beam splitter surface, and when the first polarized light is projected onto the left reflecting mirror surface of the beam splitter component through the beam splitter surface, the second polarized light projected by the beam splitter surface is reflected onto the right reflecting mirror surface of the beam splitter component through the total reflection surface.

[0027] In one embodiment, the beam splitter prism comprises:

[0028] A first triangular prism and a second triangular prism, after the right-angled side of the first triangular prism is glued to the right-angled side of the second triangular prism to form a rhombus prism, the hypotenuse of the first triangular prism and the hypotenuse of the second triangular prism are arranged opposite to each other, wherein the hypotenuse of the first triangular prism constitutes the light splitting surface of the light splitting prism, and the hypotenuse of the second triangular prism constitutes the total reflection surface of the light splitting prism; or,

[0029] A parallelogram prism, wherein the side of the parallelogram prism facing the light source constitutes the light splitting surface of the light splitting prism, and the side of the parallelogram prism away from the light source constitutes the total reflection surface of the light splitting prism.

[0030] In one embodiment, the beam splitter assembly further comprises a reflecting prism, wherein the reflecting prism is disposed between the left polarized beam splitter and the right polarized beam splitter, wherein the left reflecting surface of the reflecting prism constitutes the left reflecting mirror surface of the beam splitter assembly facing the beam splitter assembly, and the right reflecting surface of the reflecting prism constitutes the right reflecting mirror surface of the beam splitter assembly facing the total reflecting mirror surface of the beam splitter assembly;

[0031] The reflecting prism is configured to project the second polarized light to the right polarized beam splitter through the right reflecting mirror surface when the first polarized light is projected to the left polarized beam splitter through the left reflecting mirror surface.

[0032] In one embodiment, the optical-mechanical module further comprises a projection optical component, and the projection optical component is disposed between the light source and the light splitting component;

[0033] The projection optical component includes a collimating lens, a light homogenizing lens and a relay lens. The collimating lens and the relay lens are respectively arranged on both sides of the light homogenizing lens. The collimating lens is arranged toward the light source, and the relay lens is arranged toward the beam splitter surface of the beam splitting component.

[0034] In addition, to achieve the above-mentioned purpose, the present application also provides an extended reality device, which includes the glasses module described in any one of the above items.

[0035] The present application provides a glasses module and an extended reality device. The glasses module provided in the present application integrates a waveguide lens and an optical machine module, and a light splitting component is encapsulated inside the optical machine module to accurately split a single light source arranged toward the light splitting component into a first polarized light and a second polarized light, thereby replacing the configuration of the traditional dual optical machine module and effectively reducing the energy consumption of the light source; next, since the left polarization beam splitter and the right polarization beam splitter are respectively arranged on both sides of the light splitting component, when the first polarized light is converted into the second polarized light through the polarization conversion surface of the left polarization beam splitter and is directed to the left eye area of ​​the waveguide lens facing the left light emitting surface of the left polarization beam splitter, the second polarized light projected by the light splitting component is projected to the right eye area of ​​the waveguide lens facing the right light emitting surface of the right polarization beam splitter through the right polarization beam splitter, thereby achieving the use of only one light source to meet the visual display requirements of both eyes. That is, the present application significantly reduces the power consumption of the glasses module through the light splitting of a single light source by the light splitting component, reduces the dependence on large-capacity batteries, and thus reduces the overall weight of the glasses module, greatly improving the wearing experience of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0038] Figure 1 is a structural block diagram of the glasses module involved in the first embodiment of the present application;

[0039] Figure 2 is an optical principle diagram of a glasses module according to the first embodiment of the present application;

[0040] Figure 3 is a schematic diagram of a waveguide lens involved in the first embodiment of the present application;

[0041] Figure 4 is a schematic diagram of a left polarization beam splitting module involved in the first embodiment of the present application;

[0042] Figure 5 is a schematic diagram of a right polarization splitting module involved in the first embodiment of the present application;

[0043] Figure 6 is a schematic diagram of a beam splitter prism involved in the first embodiment of the present application;

[0044] Figure 7is a schematic diagram of the structure of glasses involved in an embodiment of the glasses module of the present application;

[0045] Figure 8 It is a schematic diagram of the optomechanical module packaging involved in the first embodiment of the present application.

[0046] Description of Figure Numbers:

[0047] 100, waveguide lens; 101, left waveguide plate; 11, left coupling zone; 12, right coupling zone; 13, left coupling zone; 14, right coupling zone; 102, right waveguide plate; 200, optical module; 10, light source; 20, beam splitter; 21, beam splitter prism; 22, reflecting prism; J1, first triangular prism; J2, second triangular prism; PBS1, polarization beam splitter film; 30, left polarization beam splitter; 31, left relay lens; 32, left polarization beam splitter module; L1, first polarization beam splitter prism; L2, second polarization beam splitter prism; L3, left reflecting mirror; 33, left lens; 34, left modulation screen; 35, left exit pupil lens; 40, right polarization beam splitter; 41, right Relay lens; 42, right polarization beam splitting module; R1, third polarization beam splitting prism; R2, fourth polarization beam splitting prism; R3, right reflector; 43, right lens; 44, right modulation screen; 45, right exit pupil lens; 50, projection optical component; 51, collimating lens; 52, uniform light lens; 53, third relay lens; S, first polarized light; P, second polarized light; 300, glasses shell; 400, glasses bracket; 500, nose pad; 601, left temple; 602, right temple; 401, left light hole; 402, right light hole; 403, left temple pin; 404, right temple pin; 405, nose pad fixing hole; 406, left hinge hole; 407, right hinge hole.

[0048] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0051] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0052] Here, exemplary embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application.

[0053] In the field of XR (eXtended Reality) technology, the glasses module is an important carrier of XR technology, and the degree of perfection of its design and functions directly determines the quality of the user experience. According to the degree of integration, glasses modules are mainly divided into two categories: split type and integrated type. The split glasses module effectively solves the power supply problem by separating functional modules such as power supply and drive from the main body of the glasses. However, the resulting wire dragging phenomenon greatly reduces the convenience and comfort of wearing, and cannot meet the user's high requirements for portable wear. In contrast, the integrated glasses module integrates the functional module with the main body of the glasses, successfully avoiding the problem of wire dragging, but the dual-optical machine module on the glasses consumes huge power and requires large-capacity battery support, which increases the weight of the glasses and increases the burden on the wearer's head, thereby seriously affecting the wearer's wearing experience.

[0054] In order to solve the technical defect that the above-mentioned existing glasses module requires a large-capacity battery due to the dual light source configuration, which leads to an increase in the weight of the entire glasses, the present application provides a glasses module and an extended reality device.

[0055] The present application embodiment provides a glasses module, referring to Figure 1 As shown, Figure 1This is a structural block diagram of the glasses module involved in the first embodiment of the present application. The glasses module includes a waveguide lens 100 and an optical machine module 200, and the optical machine module includes a light source 10, a beam splitter 20, a left polarization beam splitter 30, and a right polarization beam splitter 40. The light source 10 is arranged toward the beam splitter 20, and the beam splitter 20 is arranged between the left polarization beam splitter 30 and the right polarization beam splitter 40. The left light emitting surface of the left polarization beam splitter 30 is arranged toward the left eye area of ​​the waveguide lens 100, and the right light emitting surface of the right polarization beam splitter 40 is arranged toward the right eye area of ​​the waveguide lens 100.

[0056] In this embodiment, the glasses module provided in this application can be understood as XR glasses, and the XR glasses can be a glasses structure combining one or more of AR (Augmented Reality) technology, VR (Virtual Reality) technology and MR (Mixed Reality) technology. Figure 1 In the optical machine module 200, the light source 10 is arranged toward the light splitting component 20, and the light splitting component 20 is arranged between the left polarization beam splitter 30 and the right polarization beam splitter 40. The incident light of the single light source 10 is split by the light splitting component 20 to form Figure 1 The solid arrows represent the first polarized light S and Figure 2 The second polarized light P represented by the dotted arrow is shown. Next, when the first polarized light S is converted into the second polarized light P through the polarization conversion surface of the left polarized beam splitter 30 and is directed to the left eye area of ​​the waveguide lens 100 facing the left light exit surface of the left polarized beam splitter 30, the second polarized light P projected by the beam splitting component 20 is projected to the right eye area of ​​the waveguide lens 100 facing the right light exit surface of the right polarized beam splitter 40 through the right polarized beam splitter 40, thereby achieving the use of only one light source 10 to meet the visual display requirements of both eyes. That is, the present application reduces the power consumption of the glasses module by the light splitting component 20 for the single light source 10, thereby reducing the dependence on large-capacity batteries, further reducing the weight of the glasses module, and significantly improving the wearing experience of the user.

[0057] The light source 10 is divided into a first polarized light S and a second polarized light P by the beam splitter 20. The first polarized light S is converted into the second polarized light P by the polarization conversion surface of the left polarization beam splitter 20 and is projected to the left eye area facing the left light output surface. The second polarized light P is projected to the right eye area facing the right light output surface by the right polarization beam splitter 40.

[0058] In this embodiment, after the incident light of the light source 10 is projected onto the beam splitter surface of the beam splitter component 20, the incident light is split into a first polarized light S and a second polarized light P which are perpendicular to each other by the beam splitter surface, and the first polarized light S is converted into the second polarized light P by the polarization conversion surface of the left polarized beam splitter 30, and is directed to the left eye area of ​​the waveguide lens 100 which is facing the left light exit surface of the left polarized beam splitter 30; at this time, the second polarized light P is projected to the right eye area of ​​the waveguide lens 100 which is facing the right light exit surface by the right polarized beam splitter 40. That is, the light splitting of the light source 10 by the beam splitter component 20 enables the glasses module provided in the present application to meet the visual needs of both eyes only through the action of a single light source 10, avoiding the phenomenon that the weight of the whole glasses increases due to the need for a large-capacity battery in the configuration of the dual light sources 10 in the traditional glasses module, thereby reducing the demand for battery capacity by reducing the power consumption of the glasses module, significantly reducing the weight of the glasses module, and greatly improving the wearing experience of the user.

[0059] It should be noted that the first polarized light S can be understood as S polarized light, which refers to polarized light whose electric field vibration direction is perpendicular to the light propagation direction of the incident light; the second polarized light P can be understood as P polarized light, which refers to polarized light whose electric field vibration direction is the same as the light propagation direction of the incident light.

[0060] In summary, the present application provides a glasses module and an extended reality device. The glasses module provided in the present application integrates a waveguide lens 100 and an optical machine module 200, and encapsulates a spectroscopic component 20 inside the optical machine module 200 to accurately split a single light source 10 set toward the spectroscopic component 20 into a first polarized light S and a second polarized light P, thereby replacing the configuration of the traditional dual optical machine module and effectively reducing the energy consumption of the light source 10; next, since a left polarization beam splitter 30 and a right polarization beam splitter 40 are respectively provided on both sides of the spectroscopic component 20, when the first polarization light P is converted into the second polarization light S through the polarization conversion surface of the left polarization beam splitter 30 and is directed to the left eye area of ​​the waveguide lens 100 facing the left light emitting surface of the left polarization beam splitter 30, the second polarization light S projected by the spectroscopic component 20 is projected to the right eye area of ​​the waveguide lens 100 facing the right light emitting surface of the right polarization beam splitter 40 through the right polarization beam splitter 40, thereby achieving the visual display needs of both eyes being met using only one light source 10. That is, the present application significantly reduces the power consumption of the glasses module by splitting the single light source 10 through the splitting component 20, reduces the dependence on large-capacity batteries, and thus reduces the overall weight of the glasses module, greatly improving the user's wearing experience.

[0061] Further, in some feasible embodiments, referring to Figure 2 , Figure 2It is an optical principle diagram of the eyeglass module involved in the first embodiment of the present application. The left polarized beam splitter 30 includes a left relay lens 31, a left polarized beam splitting module 32, a left lens 33 and a left modulation screen 34; the left relay lens 31 and the left lens 33 are respectively arranged on both sides of the left polarized beam splitting module 32, the left relay lens 31 is arranged toward the left reflective mirror surface of the beam splitting component, and the left lens 33 is arranged on the side away from the left polarized beam splitting module 32. The left light emitting surface of the left polarized beam splitter 32 constitutes the left light emitting surface of the left polarized beam splitter 30 and is arranged toward the left eye area of ​​the waveguide lens; the first polarized light passes through the left reflective mirror surface to the left relay lens 31 and is projected to the left polarized beam splitting module 32. The phase conversion surface is converted into a second polarized light, and the second polarized light is converged by the left lens 33 to the left modulation screen 34 to be modulated into a polarized image light, and the polarized image light is the first polarized light carrying the projection light image of the light source; the polarized image light passes through the left modulation screen 34 and the left lens 33 to be projected to the left splitting surface of the left polarization splitting module 32, and is reflected by the left splitting surface to the phase delay surface of the left polarization splitting module 32 to be twice phase delayed into the second polarized light, and then passes through the left splitting surface to be projected to the left eye area toward which the left light exit surface faces; wherein, the phase delay surface of the left polarization splitting module 32 is the polarization conversion surface of the left polarization beam splitter 30.

[0062] In this embodiment, refer to Figure 2 The left relay lens 31 converges the first polarized light S projected by the left reflective mirror surface of the splitter component 20, and the converged first polarized light S is vertically incident on the phase conversion surface of the left polarization splitter module 32, and the phase of the first polarized light S is delayed by π / 2 times through the phase conversion surface to become the second polarized light P, and then it is projected to the left lens 33 through the left polarization splitter module 32 for convergence, and the converged second polarized light P is projected to the left modulation screen 34 for modulation into polarized image light (that is, the first polarized light S carrying the projection light image of the light source), and then it is projected to the left splitter surface of the left polarization splitter module 32 through the left splitter surface, and reflected to the phase delay surface of the left polarization splitter module 32 through the left splitter surface, and the phase of the first polarized light S is reversed by the phase delay surface. After being delayed by 1 / 4 wavelength, it reaches the surface of the left reflector L3 of the left polarization splitting module 32, and is reflected by the surface of the left reflector L3 and passes through the phase delay surface of the left polarization splitting module 32 again, so that the first polarized light S after the phase delay of 1 / 4 wavelength is further delayed by 1 / 4 wavelength, and becomes the second polarized light P. Then, it passes through the left polarization splitting module 32 and is projected to the left exit pupil lens 35 in the left polarization beam splitter 30. The second polarized light P converged by the left exit pupil lens 35 can be more accurately projected to the left coupling-in area 11 in the left waveguide plate 101, thereby reducing unnecessary light loss to significantly enhance the clarity of light imaging; next, the projection light image carried by the second polarized light P is coupled out to the user's left eye through the left coupling-out area 13 of the left waveguide plate 101.

[0063] It should be noted that, refer to Figure 3 , Figure 3 1 is a schematic diagram of a waveguide lens 100 involved in the first embodiment of the present application. The waveguide lens 100 refers to a pair of independent waveguides. Specifically, the waveguide lens arranged toward the user's left eye is called the left waveguide lens 101, and the waveguide lens arranged toward the user's right eye is called the right waveguide lens 102. The left coupling region 11 of the left waveguide lens 101 faces Figure 5 The left light exit hole on the eyeglass support 400 is arranged, the left outcoupling area 13 of the left waveguide plate 101 is arranged toward the left eye of the user, and the right incoupling area 12 of the right waveguide plate 102 is arranged toward the left eye of the user. Figure 5 The right light exit hole on the glasses support 400 is shown, and the left outcoupling area 13 of the right waveguide plate 102 is arranged toward the right eye of the user. The waveguide lens 100 can also be a whole waveguide plate, and the present application does not make any limitation here.

[0064] The left modulation screen 34 includes but is not limited to an LCOS (Liquid Crystal On Silicon) screen; a phase conversion film HWP1, i.e., a HWP (half-wave plate) film, which delays the phase of light perpendicular to the HWP film by π / 2 or an odd multiple thereof. The left polarization beam splitter 32 can be understood as a PBS prism. A phase delay film QWP1, i.e., a QWP (QuarterWave Plate) film, which delays the phase of light perpendicular to the QWP film by π / 4.

[0065] Further, in some other feasible embodiments, referring to Figure 2 as well as Figure 4 , Figure 4 It is a schematic diagram of the left polarization beam splitting module involved in the first embodiment of the present application. The left polarization beam splitter 30 also includes a left exit pupil lens 35, and the left polarization beam splitting module 32 also includes a first polarization beam splitting prism L1, a second polarization beam splitting prism L2 and a left reflector L3; the hypotenuse of the first polarization beam splitting prism L1 and the hypotenuse of the second polarization beam splitting prism L2 are arranged opposite to each other to form a left rectangular prism arranged between the left relay lens 31 and the left lens 33; the hypotenuse of the first polarization beam splitting prism L1 and the hypotenuse of the second polarization beam splitting prism L2 are fixedly connected to the polarization beam splitting film PBS1 to form the left polarization beam splitting module 32 A phase conversion film is attached to the side of the first polarization beam splitting prism L1 facing the left relay lens 31 to constitute the phase conversion surface of the left polarization beam splitting module 32, and a phase delay film is attached to the side of the second polarization beam splitting prism L2 facing the left reflector L3 to constitute the phase delay surface of the left polarization beam splitting module 32; the left exit pupil lens 35 is arranged on the side of the first polarization beam splitting prism L1 away from the phase delay surface, and the side of the first polarization beam splitting prism L1 away from the phase delay surface constitutes the left light exit surface of the left polarization beam splitting module 32.

[0066] In this embodiment, refer to Figure 4 The left polarization splitting module 32 includes a first polarization splitting prism L1, a second polarization splitting prism L2, a left reflector L3, a polarization splitting film PBS1, a phase conversion film HWP1 and a phase delay film QWP1, wherein the polarization splitting film PBS1 is fixedly connected between the hypotenuse of the first polarization splitting prism L1 and the hypotenuse of the second polarization splitting prism L2 to form a left splitting surface of the left polarization splitting module 32, a phase conversion film is attached to the side of the first polarization splitting prism L1 facing the left relay lens 31 to form the phase conversion surface of the left polarization splitting module 32, and a phase delay film is attached to the side of the second polarization splitting prism L2 facing the left reflector L3 to form the phase delay surface of the left polarization splitting module 32.

[0067] It should be noted that the first polarization beam splitter prism L1 and the second polarization beam splitter prism L2 can be understood as PBS prisms.

[0068] For example, refer to Figure 2 The left relay lens 31 converges the first polarized light S projected by the left reflective mirror surface of the splitter component 20, and the converged first polarized light S is vertically incident on the phase conversion surface of the left polarization splitter module 32. The phase conversion film attached to the phase conversion surface makes the first polarized light S phase-delayed by π / 2 times to become the second polarized light P, and then passes through the left polarization splitter module 32 to be projected to the left lens 33 for convergence, and the converged second polarized light P is projected to the left modulation screen 34 to be modulated into a polarized image light (that is, the first polarized light S carrying the projection light image of the light source), and then passes through the left lens 33 to be projected to the left splitter surface of the left polarization splitter module 32, and is reflected to the phase delay surface of the left polarization splitter module 32 by the polarization splitter film PBS1 attached to the left splitter surface, and is transmitted through the phase delay attached to the phase delay surface. The film delays the phase of the first polarized light S by 1 / 4 wavelength and then reaches the surface of the left reflector L3 of the left polarization splitting module 32. The first polarized light S is reflected by the surface of the left reflector L3 and then passes through the phase delay film attached to the phase delay surface of the left polarization splitting module 32, so that the first polarized light S after the phase delay of 1 / 4 wavelength is further delayed by 1 / 4 wavelength and becomes the second polarized light P. The second polarized light P passes through the left polarization splitting module 32 and is projected to the left exit pupil lens 35 in the left polarization beam splitter 30. After being converged by the left exit pupil lens 35, the second polarized light P can be more accurately projected to the left coupling-in area 11 in the left waveguide plate 101, thereby reducing unnecessary light loss and significantly enhancing the clarity of light imaging. Next, the projection light image carried by the second polarized light P is coupled out to the user's left eye through the left coupling-out area 13 of the left waveguide plate 101.

[0069] Further, in some feasible embodiments, referring to Figure 2The right polarization beam splitter 40 includes a right relay lens 41, a right polarization beam splitting module 42, a right lens 43 and a right modulation screen 44; the right relay lens 41 and the right lens 43 are respectively arranged on both sides of the right polarization beam splitting module 42, the right relay lens 41 is arranged toward the right reflective mirror surface of the beam splitting component, and the right lens 43 is arranged on the side away from the right polarization beam splitting module 42. The right light emitting surface of the right polarization beam splitter 42 constitutes the right light emitting surface of the right polarization beam splitter 40, which is arranged toward the right eye area of ​​the waveguide lens; the second polarized light passes through the right reflective mirror surface in sequence After passing through the right relay lens 41, the right polarization splitting module 42 and the right lens 43, it is projected onto the right modulation screen 44, and the second polarized light is modulated into polarized image light by the right modulation screen 44. The polarized image light is the first polarized light carrying the projection light image of the light source; the polarized image light passes through the right modulation screen 44 and the right lens 43 and is projected onto the right splitting surface of the right polarization splitting module 42, and is reflected by the right splitting surface to the phase delay surface of the right polarization splitting module 42 for a second phase delay to become the second polarized light, and then passes through the right splitting surface and is projected to the right eye area toward which the right light emitting surface faces.

[0070] In this embodiment, refer to Figure 2 , the second polarized light P passes through the polarization beam splitting film PBS1 attached to the beam splitting mirror surface of the beam splitting component 20 and is projected to the total reflection mirror surface of the beam splitting component 20, and is reflected by the total reflection mirror surface to the right reflection surface of the reflection prism 22 for secondary reflection, and then is incident on the right relay lens 41; the second polarized light P converged by the right relay lens 41 passes through the right polarization beam splitting module 42 and is projected to the right lens 43 for convergence, and the converged second polarized light P is projected to the right modulation screen 44 to be modulated into a polarized image light (i.e., the first polarized light S carrying the projection light image of the light source), and then passes through the right lens 43 and is projected to the right beam splitting surface of the right polarization beam splitting module 42, and is passed through the polarization beam splitting film PB attached to the right beam splitting surface. S1 is reflected to the phase delay surface of the right polarization splitting module 42, and the phase of the first polarized light S is delayed by 1 / 4 wavelength through the phase delay surface and then reaches the right reflector R3 surface of the right polarization splitting module 42, and is reflected by the right reflector R3 surface and passes through the phase delay surface of the right polarization splitting module 42 again, so that the first polarized light S after the phase delay of 1 / 4 wavelength is further delayed by 1 / 4 wavelength, and becomes the second polarized light P, and then passes through the right splitting surface of the right polarization splitting module 42, and is projected to the right coupling-in area 12 of the right waveguide plate 102 facing the right light emitting surface of the right polarization splitting module 42; next, the projection light image carried by the second polarized light P is coupled out to the user's right eye through the right coupling-out area 14 of the right waveguide plate 102.

[0071] It should be noted that the right modulation screen 44 includes but is not limited to an LCOS (Liquid Crystal On Silicon) screen.

[0072] Further, in some other feasible embodiments, referring to Figure 2 as well as Figure 5 , Figure 5 It is a schematic diagram of a right polarization splitting module involved in the first embodiment of the present application. The right polarization beam splitter 40 also includes a right exit pupil lens 45, and the right polarization beam splitting module 42 also includes a third polarization beam splitting prism R1, a fourth polarization beam splitting prism R2 and a right reflector R3; the hypotenuse of the third polarization beam splitting prism R1 and the hypotenuse of the fourth polarization beam splitting prism R2 are arranged opposite to each other to form a right rectangular prism arranged between the right relay lens 41 and the right lens 43, and the hypotenuse of the third polarization beam splitting prism R1 and the hypotenuse of the fourth polarization beam splitting prism R2 are fixedly connected with a polarization beam splitting film PBS1 to form a right beam splitting surface of the right polarization beam splitting module 42, and a phase delay film QWP1 is attached to the side of the fourth polarization beam splitting prism R2 facing the right reflector R3 to form a phase delay surface of the right polarization beam splitting module 42; the right exit pupil lens 45 is arranged on the side of the third polarization beam splitting prism R1 away from the phase delay surface of the right polarization beam splitting module 42, and the side of the third polarization beam splitting prism R1 away from the phase delay surface of the right polarization beam splitting module 42 constitutes the right light exit surface of the right polarization beam splitting module 42.

[0073] In this embodiment, refer to Figure 2 as well as Figure 5The second polarized light P passes through the polarization beam splitting film PBS1 attached to the beam splitting mirror surface of the beam splitting component 20 and is projected onto the total reflection mirror surface of the beam splitting component 20. The second polarized light P is reflected by the total reflection mirror surface to the right reflection surface of the reflection prism 22 for secondary reflection, and then is incident on the right relay lens 41 for convergence. The converged second polarized light P enters the third polarization beam splitting prism R1, passes through the polarization beam splitting film PBS1 and the fourth polarization beam splitting prism R2, and is projected onto the right lens 43. After being converged by the right lens 43, it is projected onto the right modulation screen 44. After being modulated by the right modulation screen 44, the second polarized light P becomes a polarized image light (i.e., the first polarized light S carrying the projection light image of the light source), and is re-entered into the right lens 43. After passing through the right lens 43, it enters the fourth polarization beam splitting prism R2 and is projected onto the polarization beam splitting film PBS1. After being reflected by the polarization beam splitting film PBS1, the second polarized light P enters the fourth polarization beam splitting prism R2 and is projected onto the polarization beam splitting film PBS1. Afterwards, the first polarized light S of the projection light image carrying the light source turns and is projected onto the phase delay film QWP1, so that the first polarized light S of the projection light image carrying the light source is phase delayed by 1 / 4 wavelength and reaches the surface of the right reflector R3. After being reflected by the surface of the right reflector R3, it passes through the phase delay film QWP1 again and is phase delayed by 1 / 4 wavelength. At this time, the first polarized light S of the projection light image carrying the light source becomes the second polarized light P, and passes through the right splitting surface and the right exit light surface of the right polarization splitting module 42 in sequence. After being projected to the right exit pupil lens 45 for convergence, the second polarized light P can be more accurately projected to the right coupling-in area 12 of the right waveguide plate 101, thereby reducing unnecessary light loss to significantly enhance the clarity of light imaging; next, the projection light image carried by the second polarized light P is coupled out to the user's right eye through the right coupling-out area 14 of the right waveguide plate 101.

[0074] It should be noted that the right modulation screen 44 includes but is not limited to an LCOS (Liquid Crystal On Silicon) screen.

[0075] Further, in some feasible embodiments, the beam splitting component 20 includes a beam splitting prism 21, a beam splitting surface of the beam splitting prism 21 constituting a beam splitting mirror surface of the beam splitting component 20 arranged toward the light source 10, a total reflection surface of the beam splitting prism 21 arranged on the opposite side of the beam splitting surface, a polarization beam splitting film is attached to the beam splitting surface, and the total reflection surface is coated with an anti-reflection film; the beam splitting prism 21 is configured to split the light source 10 into a first polarized light S and a second polarized light P that are perpendicular to each other through the beam splitting mirror surface, and when the first polarized light S is projected to the left reflecting mirror surface of the beam splitting component 20 through the beam splitting mirror surface, the second polarized light P projected by the beam splitting mirror surface is reflected to the right reflecting mirror surface of the beam splitting component 10 through the total reflection surface.

[0076] In this embodiment, refer to Figure 2, the splitting surface of the splitting prism 21 constitutes the splitting mirror surface of the splitting component 20 and is arranged toward the light source 10, and a projection optical component 50 is arranged between the light source 10 and the splitting surface of the splitting prism 21; illustratively, the non-polarized light (i.e., incident light) from the light source 10 is converged by the collimating lens 51 in the projection optical component 50, and then passes through the uniform light lens 52 in the projection optical component 50, so that the converged incident light is more evenly projected to the third relay lens 53 in the projection optical component 50 for convergence, and then forms a light spot of appropriate size and is projected to the splitting surface of the splitting prism 21, so that the non-polarized light projected by the projection optical component 50 can be projected by the polarization splitting film PBS1 attached to the splitting surface of the splitting prism 21 The line is divided into a first polarized light S and a second polarized light P which are perpendicular to each other, that is, the polarization separation of the non-polarized light is realized by the splitting surface of the splitter prism 21; next, when the first polarized light S is projected onto the left reflecting mirror surface of the splitter component 20 through the splitting surface (that is, the splitter mirror surface) of the splitter prism 21, the second polarized light P passes through the splitter mirror surface through the polarization splitting film PBS1 and is projected onto the total reflecting mirror surface of the splitter component 20, and the reflection efficiency of the second polarized light P on the total reflecting mirror surface is improved by the anti-reflection film coated on the total reflecting mirror surface, so that more second polarized light P is reflected to the right reflecting mirror surface of the splitter component 20, which effectively reduces the light loss of the reflected second polarized light P and significantly improves the light transmission efficiency of the second polarized light P.

[0077] It should be noted that the total reflection mirror surface can be understood as the total reflection surface of the splitter prism 21, which is arranged on the opposite side of the splitter surface, thereby effectively optimizing the light propagation path of the second polarized light P through the polarization splitter film PBS1 on the splitter surface to the total reflection surface, and reducing the light loss of the second polarized light P during the light transmission process.

[0078] The polarizing beam splitter film PBS1 is a PBS (Polarizing Beam Splitter) film, that is, when non-polarized light is incident on the PBS film, the incident non-polarized light is split by the PBS film into two perpendicular beams of a first polarized light S (i.e., S polarized light, also called S-state polarized light) and a second polarized light P (i.e., P polarized light, also called P-state polarized light). The first polarized light S passes through the PBS film, and the second polarized light P passes through the PBS film.

[0079] Further, in some other feasible embodiments, referring to Figure 6 , Figure 6Schematic diagram of the beam splitter prism involved in the first embodiment of the present application. The beam splitter prism 21 includes: a first triangular prism J1 and a second triangular prism J2, after the right-angled side of the first triangular prism J1 is glued to the right-angled side of the second triangular prism J2 to form a rhombus prism, the hypotenuse of the first triangular prism J1 and the hypotenuse of the second triangular prism J2 are arranged opposite to each other, wherein the hypotenuse of the first triangular prism J1 constitutes the beam splitting surface of the beam splitter prism 21, and the hypotenuse of the second triangular prism J2 constitutes the total reflection surface of the beam splitter prism 21.

[0080] In this embodiment, refer to Figure 6 The beam splitter prism 21 shown in (a) replaces the configuration of the traditional dual-optical machine module by gluing the right-angled side of the first triangular prism J1 and the right-angled side of the second triangular prism J2 to form a rhombus structure. Specifically, the hypotenuse of the first triangular prism J1 serves as the beam splitting surface of the beam splitter prism 21. The polarization beam splitting film PBS1 attached to the beam splitting surface of the beam splitter prism 21 can accurately decompose the non-polarized light projected by the projection optical component 50 into the first polarized light S and the second polarized light P in different polarization directions, thereby effectively reducing the power consumption of the eyeglass module, reducing the dependence on large-capacity batteries, and further reducing the weight of the eyeglass module, significantly improving the user's wearing experience. Next, when the first polarized light S is reflected to the left reflecting mirror surface of the splitting component 20 through the polarization splitting film PBS1 attached to the splitting surface of the splitting prism 21, a reflection-enhancing film is coated on the total reflection surface formed by the hypotenuse of the second triangular prism J2 arranged opposite to the hypotenuse of the first triangular prism J1, so that the second polarized light P can be efficiently reflected to the right reflecting mirror surface of the splitting component 20, thereby reducing the light loss in the light transmission process and significantly improving the imaging quality of the optical-mechanical module 200.

[0081] Alternatively, a parallelogram prism is used, wherein the side of the parallelogram prism facing the light source 10 constitutes the beam splitting surface of the beam splitting prism 21 , and the side of the parallelogram prism away from the light source 10 constitutes the total reflection surface of the beam splitting prism 21 .

[0082] In this embodiment, the beam splitter prism 21 provided in the present application can also be a parallelogram prism, and the side of the parallelogram prism facing the light source 10 is used as the beam splitting surface of the beam splitter prism 21, so that the non-polarized light projected through the projection optical component 50 can be accurately decomposed into the first polarized light S and the second polarized light P, that is, by attaching a polarization beam splitting film PBS1 to the side of the parallelogram prism facing the light source 10 to split the single light source 10, replacing the configuration of the traditional dual optical machine module, thereby effectively reducing the power consumption of the eyeglass module, reducing the dependence on large-capacity batteries, and then reducing the weight of the eyeglass module, significantly improving the user's wearing experience. Next, the side of the parallelogram prism away from the light source 10 is used as the total reflection surface of the beam splitter prism 21 so that the second polarized light P can be efficiently reflected to the right reflection mirror surface of the beam splitter component 20, thereby reducing the light loss during the light transmission process and significantly improving the imaging quality of the optical machine module 200.

[0083] Further, in some feasible embodiments, the light splitting component further includes a reflecting prism 22, the reflecting prism 22 is disposed between the left polarized beam splitter 30 and the right polarized beam splitter 40, the left reflecting surface of the reflecting prism 22 constitutes the left reflecting mirror surface of the light splitting component 20 facing the light splitting mirror surface of the light splitting component 20, and the right reflecting surface of the reflecting prism 22 constitutes the right reflecting mirror surface of the light splitting component 20 facing the total reflecting mirror surface of the light splitting component 20;

[0084] The reflecting prism 22 is configured to project the first polarized light S to the left polarization beam splitter 30 through the left reflecting mirror surface and to project the second polarized light P to the right polarization beam splitter 40 through the right reflecting mirror surface.

[0085] In this embodiment, refer to Figure 2 In the present application, a reflecting prism 22 is further provided in the beam splitting component 20, and the reflecting prism 22 is provided above the beam splitting prism 21 and arranged between the left polarized beam splitter 30 and the right polarized beam splitter 40. Specifically, the left reflecting surface of the reflecting prism 22 constitutes the left reflecting mirror surface of the beam splitting component 20, which faces the beam splitting mirror surface of the beam splitting component 20, so that the first polarized light S projected by the beam splitting mirror surface can be accurately reflected to the left polarized beam splitter 30 arranged toward the left reflecting mirror surface; the right reflecting surface of the reflecting prism 22 constitutes the right reflecting mirror surface of the beam splitting component 20, which faces the total reflecting mirror surface of the beam splitting component 20, so that the second polarized light P projected by the total reflecting mirror surface can be accurately reflected to the right polarized beam splitter 40 arranged toward the right reflecting mirror surface. That is to say, the present application sets the reflecting prism 22 above the splitting prism 21 and arranges it between the left polarization beam splitter 30 and the right polarization beam splitter 40; the left / right reflecting surface of the reflecting prism 22 reflects the first / second polarized light into the left / right polarization beam splitter respectively, which significantly optimizes the light transmission path and effectively improves the utilization rate and transmission efficiency of the first / second polarized light.

[0086] Further, in some other feasible embodiments, referring to Figure 2 The optical-mechanical module 200 also includes a projection optical component 50, which is arranged between the light source 10 and the spectroscopic component 20; the projection optical component 50 includes a collimating lens 51, a light homogenizing lens 52 and a relay lens 53, and the collimating lens 51 and the relay lens 53 are respectively arranged on both sides of the light homogenizing lens 52, the collimating lens 51 is arranged toward the light source 10, and the relay lens 53 is arranged toward the spectroscopic mirror surface of the spectroscopic component 20.

[0087] In this embodiment, the non-polarized light (i.e., incident light) from the light source 10 is converged by the collimating lens 51 and then projected to the uniform light lens 52, so that the converged incident light is more evenly projected to the third relay lens 53 for convergence, so as to form a light spot of appropriate size and projected to the spectroscopic mirror of the spectroscopic component 20, thereby providing the spectroscopic mirror with high-quality light source 10 input, and significantly improving the spectroscopic efficiency of the spectroscopic mirror.

[0088] In another embodiment, referring to Figure 7 , the glasses module also includes a glasses bracket 400, a glasses shell 300 and a nose pad 500, and the glasses bracket 400 is provided with a left light hole 401 and a right light hole 402 for light to pass through, three nose pad fixing holes 405, a left hinge hole 406, a right hinge hole 407, and a field of view area for fixing the waveguide lens 100; illustratively, the waveguide lens 100 is arranged between the glasses bracket 400 and the glasses shell 300, and is fixed to the field of view area on the glasses bracket 400, and an optical machine module 200 is arranged on the side of the waveguide lens 100 away from the glasses shell 300, the left light exit hole of the optical machine module 200 is aligned with the left light hole 401 of the glasses bracket 400, the right light exit hole of the optical machine module 200 is aligned with the right light hole 402 of the glasses bracket 400, and the left exit pupil lens 30 of the left polarization beam splitter 30 in the optical machine module 200 5 is arranged toward the left light exit hole of the optical machine module 200, and the right exit pupil lens 45 of the right polarization beam splitter 40 in the optical machine module 200 is arranged toward the right light exit hole of the optical machine module 200; in addition, after the nose pad 500 positioning hole on the nose pad 500 is aligned with any one of the three nose pad fixing holes 405, the nose pad 500 firmware passes through the nose pad fixing hole 405 aligned with the nose pad 500 positioning hole and is fixed to the glasses bracket 400; the left hinge hole 406 is arranged between the two left fixing holes of the left temple 601, and after being aligned with the two left fixing holes, the left temple 601 and the glasses bracket 400 are hingedly connected through the left temple pin 403; the right hinge hole 407 is arranged between the two right fixing holes of the right temple 602, and after being aligned with the two right fixing holes, the right temple 602 and the glasses bracket 400 are hingedly connected through the right temple pin 404.

[0089] In another embodiment, referring to Figure 8 , Figure 8 Schematic diagram of the package of the optical-mechanical module involved in the first embodiment of the present application. The optical-mechanical module also includes an optical-mechanical housing 60, an exemplary light source 10, a light splitting component 20, a left polarization beam splitter 30, a right polarization beam splitter 40 and a projection optical component 50. Figure 6 As shown, it is disposed in an optical machine housing 60 .

[0090] In summary, the present application provides a glasses module and an extended reality device. The glasses module provided in the present application integrates a waveguide lens 100 and an optical machine module 200, and encapsulates a spectroscopic component 20 inside the optical machine module 200 to accurately split a single light source 10 set toward the spectroscopic component 20 into a first polarized light S and a second polarized light P, thereby replacing the configuration of the traditional dual optical machine module and effectively reducing the energy consumption of the light source 10; next, since a left polarization beam splitter 30 and a right polarization beam splitter 40 are respectively provided on both sides of the spectroscopic component 20, when the first polarization light P is converted into the second polarization light S through the polarization conversion surface of the left polarization beam splitter 30 and is directed to the left eye area of ​​the waveguide lens 100 facing the left light emitting surface of the left polarization beam splitter 30, the second polarization light S projected by the spectroscopic component 20 is projected to the right eye area of ​​the waveguide lens 100 facing the right light emitting surface of the right polarization beam splitter 40 through the right polarization beam splitter 40, thereby achieving the visual display needs of both eyes being met using only one light source 10. That is, the present application significantly reduces the power consumption of the glasses module by splitting the single light source 10 through the splitting component 20, reduces the dependence on large-capacity batteries, and thus reduces the overall weight of the glasses module, greatly improving the user's wearing experience.

[0091] In addition, to achieve the above-mentioned purpose, the present application also provides an extended reality device, and the extended reality device includes any of the glasses modules mentioned above.

[0092] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0093] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0094] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium such as ROM / RAM, a disk, or an optical disk as described above, and includes a number of instructions for enabling an extended reality device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0095] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A glasses module, characterized in that: The eyeglass module comprises a waveguide lens and an optical-mechanical module, wherein the optical-mechanical module comprises a light source, a beam splitter, a left polarization beam splitter and a right polarization beam splitter, wherein the light source is arranged toward the beam splitter, the beam splitter is arranged between the left polarization beam splitter and the right polarization beam splitter, the left light emitting surface of the left polarization beam splitter is arranged toward the left eye region of the waveguide lens, and the right light emitting surface of the right polarization beam splitter is arranged toward the right eye region of the waveguide lens; The light source is divided into a first polarized light and a second polarized light by the beam splitter component. The first polarized light is converted into the second polarized light by the polarization conversion surface of the left polarization beam splitter and projected to the left eye area facing the left light output surface. The second polarized light is projected to the right eye area facing the right light output surface by the right polarization beam splitter.

2. The eyeglass module according to claim 1, characterized in that: The left polarization beam splitter comprises a left relay lens, a left polarization beam splitting module, a left lens and a left modulation screen; The left relay lens and the left lens are respectively arranged on both sides of the left polarization splitting module, the left relay lens is arranged toward the left reflective mirror surface of the splitting component, the left lens is arranged with the left modulation screen on the side away from the left polarization splitting module, and the left light emitting surface of the left polarization splitting module constitutes the left light emitting surface of the left polarization beam splitter and is arranged toward the left eye area of ​​the waveguide lens; The first polarized light passes through the optical path from the left reflective mirror to the left relay lens and is projected onto the phase conversion surface of the left polarization beam splitting module to be converted into the second polarized light. The second polarized light passes through the left lens and converges onto the left modulation screen to be modulated into polarized image light. The polarized image light is the first polarized light carrying the projection light image of the light source. The polarized image light passes through the left modulation screen and the left lens and is projected to the left splitting surface of the left polarization splitting module, and is reflected by the left splitting surface to the phase delay surface of the left polarization splitting module for secondary phase delay to become the second polarized light, and then passes through the left splitting surface and is projected to the left eye area toward which the left light emitting surface faces; wherein, The phase delay surface of the left polarization beam splitting module is the polarization conversion surface of the left polarization beam splitter.

3. The eyeglass module according to claim 2, characterized in that: The left polarization beam splitter also includes a left exit pupil lens, and the left polarization beam splitting module also includes a first polarization beam splitting prism, a second polarization beam splitting prism and a left reflector; The hypotenuse of the first polarization beam splitter prism and the hypotenuse of the second polarization beam splitter prism are arranged opposite to each other to form a left rectangular prism arranged between the left relay lens and the left lens; A polarization beam splitting film is fixedly connected between the hypotenuse of the first polarization beam splitting prism and the hypotenuse of the second polarization beam splitting prism to form a left beam splitting surface of the left polarization beam splitting module; a phase conversion film is attached to a side of the first polarization beam splitting prism facing the left relay lens to form a phase conversion surface of the left polarization beam splitting module; a phase delay film is attached to a side of the second polarization beam splitting prism facing the left reflector to form a phase delay surface of the left polarization beam splitting module; The left exit pupil lens is arranged on a side of the first polarization beam splitting prism away from the phase delay surface, and the side of the first polarization beam splitting prism away from the phase delay surface constitutes a left light emitting surface of the left polarization beam splitting module.

4. The eyeglass module according to claim 1, characterized in that: The right polarization beam splitter comprises a right relay lens, a right polarization beam splitting module, a right lens and a right modulation screen; The right relay lens and the right lens are respectively arranged on both sides of the right polarization splitting module, the right relay lens is arranged toward the right reflective mirror surface of the splitting component, the right modulation screen is arranged on the side of the right lens away from the right polarization splitting module, and the right light emitting surface of the right polarization splitting module constitutes the right light emitting surface of the right polarization beam splitter and is arranged toward the right eye area of ​​the waveguide lens; The second polarized light passes through the right reflective mirror, the right relay lens, the right polarization beam splitting module and the right lens in sequence, and is projected onto the right modulation screen, and the second polarized light is modulated into polarized image light by the right modulation screen, and the polarized image light is the first polarized light carrying the projection light image of the light source; The polarized image light passes through the right modulation screen and the right lens and is projected onto the right splitting surface of the right polarization splitting module, and is reflected by the right splitting surface to the phase delay surface of the right polarization splitting module for secondary phase delay to become the second polarized light, and then passes through the right splitting surface and is projected onto the right eye area toward which the right light exit surface faces.

5. The eyeglass module according to claim 4, characterized in that: The right polarization beam splitter also includes a right exit pupil lens, and the right polarization beam splitting module also includes a third polarization beam splitting prism, a fourth polarization beam splitting prism and a right reflector; The hypotenuse of the third polarization beam splitter prism and the hypotenuse of the fourth polarization beam splitter prism are arranged opposite to each other to form a right rectangular prism arranged between the right relay lens and the right lens. A polarization splitting film is fixedly connected between the hypotenuse of the third polarization splitting prism and the hypotenuse of the fourth polarization splitting prism to form a right splitting surface of the right polarization splitting module, and a phase delay film is attached to the side of the fourth polarization splitting prism facing the right reflector to form a phase delay surface of the right polarization splitting module; The right exit pupil lens is arranged on a side of the third polarization beam splitting prism away from the phase delay surface of the right polarization beam splitting module, and the side of the third polarization beam splitting prism away from the phase delay surface of the right polarization beam splitting module constitutes a right light exit surface of the right polarization beam splitting module.

6. The eyeglass module according to claim 1, characterized in that: The beam splitter assembly comprises a beam splitter prism, the beam splitter surface of the beam splitter prism constituting the beam splitter mirror surface of the beam splitter assembly is arranged toward the light source, the total reflection surface of the beam splitter prism is arranged on the opposite side of the beam splitter surface, a polarization beam splitter film is attached to the beam splitter surface, and the total reflection surface is coated with an anti-reflection film; The beam splitter prism is configured to split the light source into mutually perpendicular first polarized light and second polarized light through the beam splitter surface, and when the first polarized light is projected onto the left reflecting mirror surface of the beam splitter component through the beam splitter surface, the second polarized light projected by the beam splitter surface is reflected onto the right reflecting mirror surface of the beam splitter component through the total reflection surface.

7. The eyeglass module according to claim 6, wherein the beam splitter prism comprises: A first triangular prism and a second triangular prism, after the right-angled side of the first triangular prism is glued to the right-angled side of the second triangular prism to form a rhombus prism, the hypotenuse of the first triangular prism and the hypotenuse of the second triangular prism are arranged opposite to each other, wherein the hypotenuse of the first triangular prism constitutes the light splitting surface of the light splitting prism, and the hypotenuse of the second triangular prism constitutes the total reflection surface of the light splitting prism; or, A parallelogram prism, wherein the side of the parallelogram prism facing the light source constitutes the light splitting surface of the light splitting prism, and the side of the parallelogram prism away from the light source constitutes the total reflection surface of the light splitting prism.

8. The eyeglass module according to claim 1, characterized in that: The beam splitter assembly further comprises a reflecting prism, which is disposed between the left polarized beam splitter and the right polarized beam splitter, wherein the left reflecting surface of the reflecting prism constitutes the left reflecting mirror surface of the beam splitter assembly facing the beam splitter assembly, and the right reflecting surface of the reflecting prism constitutes the right reflecting mirror surface of the beam splitter assembly facing the total reflecting mirror surface of the beam splitter assembly; The reflecting prism is configured to project the second polarized light to the right polarized beam splitter through the right reflecting mirror surface when the first polarized light is projected to the left polarized beam splitter through the left reflecting mirror surface.

9. The eyeglass module according to claim 1, characterized in that: The optical-mechanical module further comprises a projection optical component, wherein the projection optical component is arranged between the light source and the light splitting component; The projection optical component includes a collimating lens, a light homogenizing lens and a relay lens. The collimating lens and the relay lens are respectively arranged on both sides of the light homogenizing lens. The collimating lens is arranged toward the light source, and the relay lens is arranged toward the beam splitter surface of the beam splitting component.

10. An extended reality device, characterized in that: The extended reality device comprises the glasses module described in any one of claims 1 to 9.

Images