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, the optical machine module comprises a light source, a light splitting assembly, a left reflector and a right reflector, the light source is arranged towards the light splitting assembly, the left reflector is arranged towards a left eye area of the waveguide lens, and the right reflector is arranged towards a right eye area of the waveguide lens. The right reflecting part is arranged towards the right eye area of the waveguide lens, and the light splitting assembly is arranged between the left reflecting part and the right reflecting part; the light splitting assembly is configured to divide the light source into first polarized light and second polarized light, the first polarized light is projected to the left eye area through the left reflecting part, and the second polarized light is projected to the right eye area through the right reflecting part. Therefore, the weight of the glasses module is reduced, and the wearing experience of a user is improved.

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 purpose, the present application provides a glasses module, the glasses module includes a waveguide lens and an optical machine module, the optical machine module includes a light source, a light splitting component, a left reflector and a right reflector, the light source is arranged toward the light splitting component, the left reflector is arranged toward the left eye area of ​​the waveguide lens, the right reflector is arranged toward the right eye area of ​​the waveguide lens, and the light splitting component is arranged between the left reflector and the right reflector;

[0007] The light splitting component is configured to split the light source into a first polarized light and a second polarized light, the first polarized light is projected to the left eye area through the left reflector, and the second polarized light is projected to the right eye area through the right reflector.

[0008] In one embodiment, the beam splitting component includes a beam splitting prism, the beam splitting surface of the beam splitting prism constitutes a 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 constitutes a total reflection mirror surface of the beam splitting component and 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;

[0009] 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 mirror surface.

[0010] In one embodiment, the beam splitter prism includes a first triangular prism and a second triangular prism;

[0011] 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 splitting surface of the splitting prism, and the hypotenuse of the second triangular prism constitutes the total reflection surface of the splitting prism.

[0012] In one embodiment, the beam splitter prism comprises a parallelogram prism, a side of the parallelogram prism facing the light source constitutes a beam splitting surface of the beam splitter prism, and a side of the parallelogram prism away from the light source constitutes a total reflection surface of the beam splitter prism.

[0013] In one embodiment, the light splitting component further includes a reflecting prism, which is disposed between the left reflecting member and the right reflecting member, wherein the left reflecting surface of the reflecting prism constitutes the left reflecting mirror surface of the light splitting component facing the light splitting mirror surface of the light splitting component, and the right reflecting surface of the reflecting prism constitutes the right reflecting mirror surface of the light splitting component facing the total reflecting mirror surface of the light splitting component;

[0014] The reflecting prism is configured to project the second polarized light to the right reflecting element through the right reflecting mirror surface when the first polarized light is projected to the left reflecting element through the left reflecting mirror surface.

[0015] In one embodiment, the left reflector includes a first relay lens, a left polarizing beam splitter, a left lens, a left modulation screen, and a left exit pupil lens;

[0016] The left polarized beam splitter is arranged between the first relay lens and the left lens, the first relay lens is arranged toward the left reflective mirror surface of the beam splitting component, and the left modulation screen is arranged on a side of the left lens away from the left polarized beam splitter;

[0017] The left polarization beam splitter is provided with a phase conversion surface and a left beam splitting surface;

[0018] The phase conversion surface is configured to convert the first polarized light converged by the first relay lens into a second polarized light that passes through the left lens and projects onto the left modulation screen, and a half-wave plate film is attached to the phase conversion surface;

[0019] The left beam splitting surface is configured to project the polarized optical image modulated by the left modulation screen to the left eye area toward which the left exit pupil lens faces, and a polarization beam splitting film is attached to the left beam splitting surface.

[0020] In one embodiment, the right reflective member includes a second relay lens, a right polarizing beam splitter, a right lens, a right modulation screen, and a right exit pupil lens;

[0021] The right polarization beam splitter is arranged between the second relay lens and the right lens, the second relay lens is arranged toward the right reflective mirror surface of the beam splitting component, and the right modulation screen is arranged on a side of the right lens away from the right polarization beam splitter;

[0022] After the second polarized light is projected to the second relay lens through the right reflective mirror surface for convergence, the converged second polarized light is projected to the right modulation screen according to the light propagation direction from the right polarization beam splitter to the right lens to form a polarized optical image;

[0023] The right beam splitter surface of the right polarization beam splitter is configured to project the polarized optical image projected by the right modulation screen through the right lens to the right eye area toward which the right exit pupil lens faces, and a polarization beam splitter film is attached to the right beam splitter surface.

[0024] 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;

[0025] The projection optical component includes a collimating lens, a light homogenizing lens and a third relay lens, wherein the light homogenizing lens is arranged between the collimating lens and the third relay lens, the collimating lens is arranged toward the light source, and the third relay lens is arranged toward the beam splitter surface of the beam splitting component.

[0026] In one embodiment, the glasses module further comprises a glasses frame and a glasses shell, the left eye region comprises a left coupling-in region and a left coupling-out region, and the right eye region comprises a right coupling-in region and a right coupling-out region;

[0027] The waveguide lens is arranged between the glasses bracket and the glasses shell, the waveguide lens is fixed on the glasses bracket, and the optical-mechanical module is arranged on a side of the waveguide lens away from the glasses shell;

[0028] The left exit pupil lens of the left reflector is arranged toward the left light exit hole of the optical machine module, the left light exit hole is aligned with the left light through hole of the glasses bracket, the left light through hole is arranged toward the left coupling-in area, and the left coupling-out area is arranged on the opposite side of the user's right eye;

[0029] The right exit pupil lens of the right reflective element is arranged toward the right light exit hole of the optical machine module, the right light exit hole is aligned with the right light through hole of the glasses holder, the right light through hole is arranged toward the right coupling-in area, and the right coupling-out area is arranged on the opposite side of the user's right eye.

[0030] 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.

[0031] 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 replaces the configuration of the traditional dual optical machine module by a light splitting component provided between the left reflector and the right reflector in the optical machine module. The light splitting component accurately splits the single light source in the optical machine module into a first polarized light and a second polarized light, and when the first polarized light is projected to the left eye area of ​​the waveguide lens through the left reflector, the second polarized light projected by the light splitting component is guided to the right eye area of ​​the waveguide lens through the right reflector, so that only one light source is needed to meet the visual needs of both eyes. That is, the present application reduces the power consumption of the glasses module by splitting the single light source through the light splitting component, thereby reducing the dependence on large-capacity batteries, further reducing the weight of the glasses module, and thus significantly improving the wearing experience of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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.

[0033] 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.

[0034] Figure 1 is a structural block diagram of the glasses module involved in the first embodiment of the present application;

[0035] Figure 2 is an optical principle diagram of a glasses module according to the first embodiment of the present application;

[0036] Figure 3 is a schematic diagram of a beam splitter prism involved in the first embodiment of the present application;

[0037] Figure 4 is a schematic diagram of a waveguide lens involved in the first embodiment of the present application;

[0038] Figure 5 is a schematic diagram of the structure of glasses involved in an embodiment of the glasses module of the present application;

[0039] Figure 6 It is a schematic diagram of the optomechanical module packaging involved in the first embodiment of the present application.

[0040] Description of Figure Numbers:

[0041] 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 reflector; 31, first relay lens; 32, left polarization beam splitter; 33, left lens; 34, left modulation screen; 35, left exit pupil lens; 40, right reflector; 41, second Relay lens; 42, right polarization beam splitter; 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 pads; 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.

[0042] 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

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] The present application embodiment provides a glasses module, referring to Figure 1 As shown, Figure 1 1 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. The optical machine module 200 includes a light source 10, a light splitting component 20, a left reflector 30 and a right reflector 40. The light source 10 is arranged toward the light splitting component 20, the left reflector 30 is arranged toward the left eye area of ​​the waveguide lens 100, the right reflector 40 is arranged toward the right eye area of ​​the waveguide lens 100, and the light splitting component 20 is arranged between the left reflector 30 and the right reflector 40.

[0050] 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 reflector 30 and the right reflector 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 then projected to the right eye area by the right reflector 40 when the first polarized light S is projected to the left eye area through the left reflector 30, thereby achieving the goal of satisfying the visual needs of both eyes with only a single light source 10. That is, the present application reduces the power consumption of the eyeglass module by splitting the single light source 10 through the light splitting component 20, thereby reducing the dependence on large-capacity batteries, further reducing the weight of the eyeglass module, and thus significantly improving the wearing experience of the user.

[0051] It should be noted that the light source 10 includes but is not limited to an LED (Light Emitting Diode) lamp; the incident light of the light source 10 can be understood as a non-polarized light from the light source 10 .

[0052] The light splitting component 20 is configured to split the light source 10 into a first polarized light S and a second polarized light P. The first polarized light S is projected to the left eye area through the left reflector 30 , and the second polarized light P is projected to the right eye area through the right reflector 40 .

[0053] In this embodiment, after the incident light of the light source 10 is projected onto the beam splitter 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, and the first polarized light S is projected onto the left eye region through the left reflector 30, and the second polarized light P is projected onto the right eye region through the right reflector 40. That is, the light splitting of the light source 10 by the beam splitter component 20 enables the eyeglass module provided in the present application to meet the visual needs of both eyes only through the action of a single light source 10, thereby avoiding the phenomenon that the weight of the whole eyeglass increases due to the need for a large-capacity battery in the configuration of the dual light sources 10 in the traditional eyeglass module, thereby achieving the reduction of the demand for battery capacity by reducing the power consumption of the eyeglass module, significantly reducing the weight of the eyeglass module, and greatly improving the wearing experience of the user.

[0054] 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.

[0055] 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 replaces the configuration of the traditional dual optical machine module by a light splitting component 20 provided between a left reflector 30 and a right reflector 40 in the optical machine module 200. The light splitting component 20 accurately splits a single light source 10 in the optical machine module 200 into a first polarized light S and a second polarized light P, and when the first polarized light S is projected to the left eye area of ​​the waveguide lens 100 through the left reflector 30, the second polarized light P projected by the light splitting component 20 is guided to the right eye area of ​​the waveguide lens 100 through the right reflector 40, so that only one light source 10 is needed to meet the visual needs of both eyes. That is, the present application reduces the power consumption of the glasses module by light splitting a single light source 10 through the light splitting component 20, thereby reducing the dependence on large-capacity batteries, further reducing the weight of the glasses module, and thus significantly improving the wearing experience of the user.

[0056] Further, in some feasible embodiments, referring to Figure 2 , Figure 2 Schematic diagram of the electrically controlled steering layer involved in the embodiment of the present application. The light splitting component 20 includes a light splitting prism 21, the light splitting surface of the light splitting prism 21 constitutes the light splitting mirror surface of the light splitting component 20 and is arranged toward the light source 10, the total reflection surface of the light splitting prism 21 constitutes the total reflection mirror surface of the light splitting component 20 and is arranged on the opposite side of the light splitting surface, a polarization light splitting film PBS1 is attached to the light splitting surface, and the total reflection surface is coated with an anti-reflection film; the light 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 light splitting mirror surface, and when the first polarized light S is projected to the left reflection mirror surface of the light splitting component 20 through the light splitting mirror surface, the second polarized light P projected by the light splitting mirror surface is reflected to the right reflection mirror surface of the light splitting component 20 through the total reflection mirror surface.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] Further, in some other feasible embodiments, referring to Figure 3 (a), 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.

[0061] In this embodiment, refer to Figure 3 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.

[0062] Further, in some feasible embodiments, referring to Figure 3 (b) The beam splitter prism 21 includes a parallelogram prism, the side of the parallelogram prism facing the light source 10 constitutes a beam splitting surface of the beam splitter prism 21 , and the side of the parallelogram prism away from the light source 10 constitutes a total reflection surface of the beam splitter prism 21 .

[0063] 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.

[0064] Further, in some other feasible embodiments, referring to Figure 2The spectroscopic component 20 also includes a reflecting prism 22, which is arranged between the left reflecting member 30 and the right reflecting member 40. The left reflecting surface of the reflecting prism 22 constitutes the left reflecting mirror surface of the spectroscopic component 20 facing the spectroscopic mirror surface of the spectroscopic component 20, and the right reflecting surface of the reflecting prism 22 constitutes the right reflecting mirror surface of the spectroscopic component 20 facing the total reflecting mirror surface of the spectroscopic component 20; the reflecting prism 22 is configured to project the second polarized light P to the right reflecting member 40 through the right reflecting mirror surface when the first polarized light S is projected to the left reflecting member 30 through the left reflecting mirror surface.

[0065] In this embodiment, refer to Figure 2 In the present application, a reflecting prism 22 is further provided in the light splitting component 20, and the reflecting prism 22 is provided above the light splitting prism 21 and arranged between the left reflecting member 30 and the right reflecting member 40. Specifically, the left reflecting surface of the reflecting prism 22 constitutes the left reflecting mirror surface of the light splitting component 20, which faces the light splitting mirror surface of the light splitting component 20, so that the first polarized light S projected by the light splitting mirror surface can be accurately reflected to the left reflecting member 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 light splitting component 20, which faces the total reflecting mirror surface of the light splitting component 20, so that the second polarized light P projected by the total reflecting mirror surface can be accurately reflected to the right reflecting member 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 reflecting element 30 and the right reflecting element 40; the left / right reflecting surface of the reflecting prism 22 reflects the first / second polarized light into the left / right reflecting element respectively, which significantly optimizes the light transmission path and effectively improves the utilization rate and transmission efficiency of the first / second polarized light.

[0066] Further, in some feasible embodiments, referring to Figure 2 The left reflective member 30 includes a first relay lens 31, a left polarized beam splitter 32, a left lens 33, a left modulation screen 34 and a left exit pupil lens 35; the left polarized beam splitter 32 is arranged between the first relay lens 31 and the left lens 33, the first relay lens 31 is arranged toward the left reflective mirror surface of the beam splitting component 20, and the left modulation screen 34 is arranged on the side of the left lens 33 away from the left polarized beam splitter 32; the left polarized beam splitter 32 is provided with a phase conversion surface and a left beam splitter surface; the phase conversion surface is configured to convert the first polarized light S converged by the first relay lens 31 into a second polarized light P that passes through the left lens 33 and is projected onto the left modulation screen 34, and a half-wave plate film is attached to the phase conversion surface; the left beam splitter surface is configured to project the polarized optical image modulated by the left modulation screen 34 to the left eye area toward which the left exit pupil lens 35 is directed, and a polarized beam splitter film PBS1 is attached to the left beam splitter surface.

[0067] In this embodiment, refer to Figure 2The first polarized light S is reflected by the polarization beam splitter film PBS1 attached to the beam splitter surface of the beam splitter component 20 to the left reflective surface of the reflective prism 22 for secondary reflection, and then enters the first relay lens 31; the first polarized light S converged by the first relay lens 31 is vertically incident on the phase conversion surface of the left polarization beam splitter 32, and the first polarized light S is delayed by π / 2 times by the half-wave plate film attached to the phase conversion surface to become the second polarized light P, and then passes through the left polarization beam splitter 32 and is projected to the left lens 33 for convergence, and the converged second polarized light P is projected to the left lens 33. After being incident on the left modulation screen 34 and modulated into a polarized optical image (i.e., the first polarized light S carrying image information), the light passes through the left lens 33 and is projected onto the left splitting surface of the left polarizing beam splitter 32, and is reflected to the left exit pupil lens 35 by the polarizing beam splitting film PBS1 attached to the left splitting surface, and then, after being converged by the left exit pupil lens 35, it enters the left coupling-in area 11 in the left waveguide plate 101 in the left eye area, thereby reducing unnecessary light loss and significantly enhancing the clarity of light imaging; next, the polarized optical image is coupled out to the user's left eye through the left coupling-out area 13 of the left waveguide plate 101.

[0068] It should be noted that, refer to Figure 4 , Figure 4 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.

[0069] The left modulation screen 34 includes but is not limited to an LCOS (Liquid Crystal On Silicon) screen; a half-wave plate film, that is, 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.

[0070] Further, in some feasible embodiments, referring to Figure 2The right reflective member 40 includes a second relay lens 41, a right polarization beam splitter 42, a right lens 43, a right modulation screen 44 and a right exit pupil lens 45; the right polarization beam splitter 42 is arranged between the second relay lens 41 and the right lens 43, the second relay lens 41 is arranged toward the right reflective mirror surface of the beam splitting component 20, and the right modulation screen 44 is arranged on the side of the right lens 43 away from the right polarization beam splitter 42; after the second polarized light P is projected onto the second relay lens 41 through the right reflective mirror surface for convergence, the converged second polarized light P is projected onto the right modulation screen 44 according to the light propagation direction from the right polarization beam splitter 42 to the right lens 43 to form a polarized optical image; the right beam splitter surface of the right polarization beam splitter 42 is configured to project the polarized optical image projected by the right modulation screen 44 through the right lens 43 to the right eye area toward which the right exit pupil lens 45 is directed, and a polarization beam splitter film PBS1 is attached to the right beam splitter surface.

[0071] In this embodiment, 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 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 enters the second relay lens 41; the second polarized light P converged by the second relay lens 41 passes through the right polarization beam splitter 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 for modulation into polarization After the optical image (i.e., the first polarized light S carrying the image information) is formed, it passes through the right lens 43 and is projected onto the left splitting surface of the right polarizing beam splitter 42, and is reflected to the right exit pupil lens 45 through the polarizing beam splitting film PBS1 attached to the right splitting surface, and then enters the right coupling-in area 12 in the right waveguide plate 102 in the right eye area after being converged by the right exit pupil lens 45, thereby reducing unnecessary light loss and significantly enhancing the clarity of light imaging; next, the polarized optical image is coupled out to the user's right eye through the right coupling-out area 14 in the right waveguide plate 102.

[0072] It should be noted that the right modulation screen 44 includes but is not limited to an LCOS (Liquid Crystal On Silicon) screen.

[0073] 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 third relay lens 53, the light homogenizing lens 52 is arranged between the collimating lens 51 and the third relay lens 53, the collimating lens 51 is arranged toward the light source 10, and the third relay lens 53 is arranged toward the spectroscopic mirror surface of the spectroscopic component 20.

[0074] 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.

[0075] Further, in some other feasible embodiments, referring to Figures 4 to 5 The glasses module also includes a glasses bracket 400 and a glasses shell 300, the left eye area includes a left coupling-in area 11 and a left coupling-out area 13, and the right eye area includes a right coupling-in area 12 and a right coupling-out area 14; the waveguide lens 100 is arranged between the glasses bracket 400 and the glasses shell 300, the waveguide lens 100 is fixed 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 exit pupil lens 35 of the left reflector 30 faces the optical machine module The left light exit hole of the block 200 is set, the left light exit hole is aligned with the left light hole 401 of the glasses holder 400, the left light hole 401 is set toward the left coupling-in area 11, and the left coupling-out area 13 is set on the opposite side of the user's right eye; the right exit pupil lens 45 of the right reflector 40 is set toward the right light exit hole of the optical machine module 200, the right light exit hole is aligned with the right light hole 402 of the glasses holder 400, the right light hole 402 is set toward the right coupling-in area 12, and the right coupling-out area 14 is set on the opposite side of the user's right eye.

[0076] In this embodiment, refer to Figure 5The 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 housing 300, and is fixed to the field of view area on the glasses bracket 400, and an optomechanical module 200 is arranged on a side of the waveguide lens 100 away from the glasses housing 300, the left light exit hole of the optomechanical module 200 is aligned with the left light hole 401 of the glasses bracket 400, the right light exit hole of the optomechanical module 200 is aligned with the right light hole 402 of the glasses bracket 400, and the left exit pupil lens 35 of the left reflector 30 in the optomechanical module 200 faces the optomechanical module 200. The left light exit hole is set, and the right exit pupil lens 45 of the right reflector 40 in the optical module 200 is set toward the right light exit hole of the optical module 200; in addition, after the nose pad positioning hole on the nose pad 500 is aligned with any one of the three nose pad fixing holes 405, the nose pad firmware passes through the nose pad fixing hole 405 aligned with the nose pad positioning hole and is fixed to the glasses bracket 400; the left hinge hole 406 is set 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 set 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.

[0077] In another embodiment, referring to Figure 6 , Figure 6 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 reflector 30, a right reflector 40 and a projection optical component 50. Figure 6 As shown, it is disposed in an optical machine housing 60 .

[0078] 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 replaces the configuration of the traditional dual optical machine module by a light splitting component 20 provided between a left reflector 30 and a right reflector 40 in the optical machine module 200. The light splitting component 20 accurately splits a single light source 10 in the optical machine module 200 into a first polarized light S and a second polarized light P, and when the first polarized light S is projected to the left eye area of ​​the waveguide lens 100 through the left reflector 30, the second polarized light P projected by the light splitting component 20 is guided to the right eye area of ​​the waveguide lens 100 through the right reflector 40, so that only one light source 10 is needed to meet the visual needs of both eyes. That is, the present application reduces the power consumption of the glasses module by light splitting a single light source 10 through the light splitting component 20, thereby reducing the dependence on large-capacity batteries, further reducing the weight of the glasses module, and thus significantly improving the wearing experience of the user.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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 glasses module comprises a waveguide lens and an optical machine module, the optical machine module comprises a light source, a light splitting component, a left reflector and a right reflector, the light source is arranged toward the light splitting component, the left reflector is arranged toward the left eye area of ​​the waveguide lens, the right reflector is arranged toward the right eye area of ​​the waveguide lens, and the light splitting component is arranged between the left reflector and the right reflector; The light splitting component is configured to split the light source into a first polarized light and a second polarized light, the first polarized light is projected to the left eye area through the left reflector, and the second polarized light is projected to the right eye area through the right reflector.

2. The eyeglass module according to claim 1, characterized in that: The beam splitter assembly comprises a beam splitter prism, wherein the beam splitter surface of the beam splitter prism constitutes a beam splitter mirror surface of the beam splitter assembly and is arranged toward the light source, the total reflection surface of the beam splitter prism constitutes a total reflection mirror surface of the beam splitter assembly and 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 mirror surface.

3. The eyeglass module according to claim 2, wherein the dichroic 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 is arranged opposite to the hypotenuse of the second triangular prism, 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.

4. The eyeglass module according to claim 2, characterized in that: The beam splitter prism comprises a parallelogram prism, a side of the parallelogram prism facing the light source constitutes a beam splitting surface of the beam splitter prism, and a side of the parallelogram prism away from the light source constitutes a total reflection surface of the beam splitter prism.

5. The eyeglass module according to claim 1, characterized in that: The light splitting component further comprises a reflecting prism, which is arranged between the left reflecting member and the right reflecting member, wherein the left reflecting surface of the reflecting prism constitutes the left reflecting mirror surface of the light splitting component facing the light splitting mirror surface of the light splitting component, and the right reflecting surface of the reflecting prism constitutes the right reflecting mirror surface of the light splitting component facing the total reflecting mirror surface of the light splitting component; The reflecting prism is configured to project the second polarized light to the right reflecting element through the right reflecting mirror surface when the first polarized light is projected to the left reflecting element through the left reflecting mirror surface.

6. The eyeglass module according to claim 1, characterized in that: The left reflective element includes a first relay lens, a left polarizing beam splitter, a left lens, a left modulation screen and a left exit pupil lens; The left polarized beam splitter is arranged between the first relay lens and the left lens, the first relay lens is arranged toward the left reflective mirror surface of the beam splitting component, and the left modulation screen is arranged on a side of the left lens away from the left polarized beam splitter; The left polarization beam splitter is provided with a phase conversion surface and a left beam splitting surface; The phase conversion surface is configured to convert the first polarized light converged by the first relay lens into a second polarized light that passes through the left lens and projects onto the left modulation screen, and a half-wave plate film is attached to the phase conversion surface; The left beam splitting surface is configured to project the polarized optical image modulated by the left modulation screen to the left eye area toward which the left exit pupil lens faces, and a polarization beam splitting film is attached to the left beam splitting surface.

7. The eyeglass module according to claim 1, characterized in that: The right reflector includes a second relay lens, a right polarization beam splitter, a right lens, a right modulation screen and a right exit pupil lens; The right polarization beam splitter is arranged between the second relay lens and the right lens, the second relay lens is arranged toward the right reflective mirror surface of the beam splitting component, and the right modulation screen is arranged on a side of the right lens away from the right polarization beam splitter; After the second polarized light is projected to the second relay lens through the right reflective mirror surface for convergence, the converged second polarized light is projected to the right modulation screen according to the light propagation direction from the right polarization beam splitter to the right lens to form a polarized optical image; The right beam splitter surface of the right polarization beam splitter is configured to project the polarized optical image projected by the right modulation screen through the right lens to the right eye area toward which the right exit pupil lens faces, and a polarization beam splitter film is attached to the right beam splitter surface.

8. 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 third relay lens, wherein the light homogenizing lens is arranged between the collimating lens and the third relay lens, the collimating lens is arranged toward the light source, and the third relay lens is arranged toward the beam splitter surface of the beam splitting component.

9. The eyeglass module according to claim 1, characterized in that: The glasses module further comprises a glasses frame and a glasses shell, the left eye area comprises a left coupling-in area and a left coupling-out area, and the right eye area comprises a right coupling-in area and a right coupling-out area; The waveguide lens is arranged between the glasses bracket and the glasses shell, the waveguide lens is fixed on the glasses bracket, and the optical-mechanical module is arranged on a side of the waveguide lens away from the glasses shell; The left exit pupil lens of the left reflector is arranged toward the left light exit hole of the optical machine module, the left light exit hole is aligned with the left light through hole of the glasses bracket, the left light through hole is arranged toward the left coupling-in area, and the left coupling-out area is arranged on the opposite side of the user's right eye; The right exit pupil lens of the right reflective element is arranged toward the right light exit hole of the optical machine module, the right light exit hole is aligned with the right light through hole of the glasses holder, the right light through hole is arranged toward the right coupling-in area, and the right coupling-out area is arranged on the opposite side of the user's right eye.

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.

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