Eyeglass module and extended reality device

Abstract

The application discloses an eyeglass module and an extended reality device, and relates to the technical field of extended reality, the eyeglass module comprises a waveguide lens and an optical machine module, the optical machine module comprises a light source, a light splitting assembly, a left reflecting element and a right reflecting element, the light source is arranged towards the light splitting assembly, the left reflecting element is arranged towards a left eye area of the waveguide lens, the right reflecting element is arranged towards a right eye area of the waveguide lens, and the light splitting assembly is arranged between the left reflecting element and the right reflecting element; the light splitting assembly is configured to split 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 element, and the second polarized light is projected to the right eye area through the right reflecting element, and the application aims to reduce the power consumption of the eyeglass module to reduce the demand for battery capacity, thereby reducing the weight of the eyeglass module to improve the wearing experience of users.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of extended reality, and particularly relates to a glasses module and an extended reality device. BACKGROUND

[0002] With the continuous development of XR (Extended Reality) technology, as an important application carrier of XR technology, users have 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 glasses main body, the current glasses module mostly adopts an integrated glasses structure and is equipped with a dual-light machine module, that is, the incident light source is provided through the light machine module arranged corresponding to the left and right lenses to provide users with a stereoscopic and clear visual experience. However, although the integrated design of the glasses module enhances the display effect, the configuration of the dual light source also significantly increases the power consumption of the glasses module, and thus a large-capacity battery needs to be configured to ensure sufficient battery life, thereby increasing the weight of the glasses module and seriously affecting the wearing experience of users.

[0004] Therefore, how to reduce the power consumption of the glasses module to reduce the demand for battery capacity is a technical problem to be solved at present. SUMMARY

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

[0006] To achieve the above purpose, the present application provides a glasses module, which comprises a waveguide lens and a light machine module, the light machine module comprises a light source, a light splitting assembly, a left reflecting element and a right reflecting element, the light source is arranged towards the light splitting assembly, the left reflecting element is arranged towards a left eye area of the waveguide lens, the right reflecting element is arranged towards a right eye area of the waveguide lens, and the light splitting assembly is arranged between the left reflecting element and the right reflecting element.

[0007] The light splitting assembly is configured to split 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 element, and the second polarized light is projected to the right eye area through the right reflecting element.

[0008] In an embodiment, the light splitting assembly comprises a light splitting prism, a light splitting surface of the light splitting prism constitutes a light splitting mirror surface of the light splitting assembly and is arranged towards the light source, a total reflection surface of the light splitting prism constitutes a total reflection mirror surface of the light splitting assembly and is arranged on the opposite surface of the light splitting surface, a polarized light splitting film is attached to the light splitting surface, and the total reflection surface is coated with a reflection-increasing film.

[0009] The light-splitting prism is configured to split the light source into first and second polarized lights perpendicular to each other by the light-splitting mirror surface, and reflect the second polarized light projected by the light-splitting mirror surface to the right reflecting mirror surface of the light-splitting assembly through the total reflecting mirror surface when the first polarized light is projected to the left reflecting mirror surface of the light-splitting assembly by the light-splitting mirror surface.

[0010] In an embodiment, the light-splitting prism comprises a first triangular prism and a second triangular prism.

[0011] After the right-angle side of the first triangular prism and the right-angle side of the second triangular prism are glued to form a rhombic 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 reflecting surface of the light-splitting prism.

[0012] In an embodiment, the light-splitting prism comprises a parallelogram prism, one side of the parallelogram prism towards 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 reflecting surface of the light-splitting prism.

[0013] In an embodiment, the light-splitting assembly further comprises a reflecting prism arranged between the left reflecting mirror surface and the right reflecting mirror surface, the left reflecting surface of the reflecting prism constitutes the left reflecting mirror surface of the light-splitting assembly towards the light-splitting mirror surface of the light-splitting assembly, and the right reflecting surface of the reflecting prism constitutes the right reflecting mirror surface of the light-splitting assembly towards the total reflecting mirror surface of the light-splitting assembly.

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

[0015] In an embodiment, the left reflecting mirror surface comprises a first relay lens, a left polarized light-splitting mirror, a left lens, a left modulating screen and a left exit pupil lens.

[0016] The left polarized light-splitting mirror is arranged between the first relay lens and the left lens, the first relay lens is arranged towards the left reflecting mirror surface of the light-splitting assembly, and the left modulating screen is arranged on the side of the left lens away from the left polarized light-splitting mirror.

[0017] The left polarized light-splitting mirror is provided with a phase conversion surface and a left light-splitting surface.

[0018] The phase conversion surface is configured to convert the first polarized light converged through the first relay lens into the second polarized light projected to the left modulating screen through the left lens, and a half-wave film is attached to the phase conversion surface.

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

[0020] In an embodiment, the right reflection component includes a second relay lens, a right polarized light splitting mirror, a right lens, a right modulation screen, and a right exit pupil lens.

[0021] The right polarized light splitting mirror is disposed between the second relay lens and the right lens, the second relay lens faces a right reflection surface of the light splitting component, and the right modulation screen is disposed on a side of the right lens away from the right polarized light splitting mirror.

[0022] After the second polarized light is projected to the second relay lens for convergence through the right reflection surface, the converged second polarized light is projected to the right modulation screen to form a polarized optical image according to a light propagation direction from the right polarized light splitting mirror to the right lens.

[0023] A right light splitting surface of the right polarized light splitting mirror is configured to project the polarized optical image projected by the right modulation screen through the right lens to the right eye region toward which the right exit pupil lens faces, and a polarized light splitting film is attached to the right light splitting surface.

[0024] In an embodiment, the optical-mechanical module further includes a projection optical component disposed between the light source and the light splitting component.

[0025] The projection optical component includes a collimating lens, a homogenizing lens, and a third relay lens, the homogenizing lens is disposed between the collimating lens and the third relay lens, the collimating lens faces the light source, and the third relay lens faces a light splitting surface of the light splitting component.

[0026] In an embodiment, the glasses module further includes a glasses holder and a glasses housing, the left eye region includes a left in-coupling area and a left out-coupling area, and the right eye region includes a right in-coupling area and a right out-coupling area.

[0027] The waveguide lens is disposed between the glasses holder and the glasses housing, the waveguide lens is fixed to the glasses holder, and the optical-mechanical module is disposed on a side of the waveguide lens away from the glasses housing.

[0028] The left exit pupil lens of the left reflection component faces a left light exit hole of the optical-mechanical module, the left light exit hole is aligned with a left light transmission hole of the glasses holder, the left light transmission hole faces the left in-coupling area, and the left out-coupling area is disposed on an opposite side of the user's right eye.

[0029] The right out-pupil lens of the right reflecting element is arranged towards a right light exit hole of the light engine module, the right light exit hole is aligned with a right light through hole of the glasses holder, the right light through hole is arranged towards the right coupling-in area, and the right coupling-out area is arranged on the opposite side of the right eye of the user.

[0030] In addition, to achieve the above-mentioned purpose, the application also provides an extended reality device, which comprises the glasses module of any one of the above-mentioned.

[0031] The application provides a glasses module and an extended reality device. The glasses module provided by the application is integrated with a waveguide lens and a light engine module, and the configuration of a traditional double light engine module is replaced by a light splitting assembly arranged between a left reflecting element and a right reflecting element in the light engine module. The light splitting assembly accurately splits a single light source in the light engine module into first polarized light and second polarized light. When the first polarized light is projected to the left eye area of the waveguide lens through the left reflecting element, the second polarized light projected by the light splitting assembly is guided to the right eye area of the waveguide lens through the right reflecting element, so that the visual needs of both eyes can be met by using only one light source. That is, the light splitting of the single light source by the light splitting assembly reduces the power consumption of the glasses module, thereby reducing the dependence on a large-capacity battery and further reducing the weight of the glasses module, and thus significantly improving the wearing experience of the user. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

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

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

[0036] Figure 3 is a schematic diagram of a light splitting prism related to the first embodiment of the present application;

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

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

[0039] Figure 6 is a schematic diagram of an optical engine module package according to a first embodiment of the present application.

[0040] Explanation of reference numerals:

[0041] 100, waveguide lens; 101, left waveguide lens; 11, left in-coupling region; 12, right in-coupling region; 13, left out-coupling region; 14, right out-coupling region; 102, right waveguide lens; 200, optical engine module; 10, light source; 20, light splitting assembly; 21, light splitting prism; 22, reflecting prism; J1, first triangular prism; J2, second triangular prism; PBS1, polarized light splitting film; 30, left reflecting member; 31, first relay lens; 32, left polarized light splitting mirror; 33, left lens; 34, left modulation screen; 35, left exit pupil lens; 40, right reflecting member; 41, second relay lens; 42, right polarized light splitting mirror; 43, right lens; 44, right modulation screen; 45, right exit pupil lens; 50, projection optical unit; 51, collimating lens; 52, homogenizing lens; 53, third relay lens; S, first polarized light; P, second polarized light; 300, eyeglass housing; 400, eyeglass support; 500, nose pad; 601, left temple; 602, right temple; 401, left light passing hole; 402, right light passing hole; 403, left temple pin; 404, right temple pin; 405, nose pad fixing hole; 406, left hinge hole; 407, right hinge hole.

[0042] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present 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, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0045] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0046] The exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. 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 as an important carrier of XR technology, the degree of perfection of its design and function directly determines the user experience. According to the degree of integration, the glasses module is mainly divided into two categories: split type and integrated type. The split type glasses module separates the power supply and driving function modules from the glasses body, effectively solving the power supply problem. However, the resulting wire dragging phenomenon greatly reduces the convenience and comfort of wearing, and cannot meet the high requirements of users for wearing. In contrast, the integrated glasses module integrates the functional modules with the glasses body, successfully avoiding the problem of wire dragging. However, the dual light source module on the glasses consumes a lot of power, which requires a large capacity battery to support, which leads to an increase in the weight of the glasses, making the wearer's head burden heavier, thereby seriously affecting the wearer's wearing experience.

[0048] To solve the technical defects of the above-mentioned existing glasses module that the large-capacity battery is required due to the dual light source configuration, resulting in an increase in the weight of the whole glasses, the present application provides a glasses module and an extended reality device.

[0049] The embodiments of the present application provide a glasses module, referring to Figure 1 , as shown in the figure, Figure 1 is a structure block diagram of the glasses module involved in the first embodiment of the present application. The glasses module includes a waveguide lens 100 and a light machine module 200, the light machine module 200 includes a light source 10, a light splitting assembly 20, a left reflecting element 30 and a right reflecting element 40, the light source 10 is arranged towards the light splitting assembly 20, the left reflecting element 30 is arranged towards the left eye area of the waveguide lens 100, the right reflecting element 40 is arranged towards the right eye area of the waveguide lens 100, and the light splitting assembly 20 is arranged between the left reflecting element 30 and the right reflecting element 40.

[0050] In the embodiment, the glasses module provided by the application can be understood as an XR glasses, which can be an AR (Augmented Reality), a VR (Virtual Reality) and a MR (Mixed Reality) or a combination of one or more of the above technologies. For example, referring to Figure 1 In the optical-mechanical module 200, the light source 10 is arranged towards the light splitting assembly 20, and the light splitting assembly 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 assembly 20 to form Figure 1 the first polarized light S represented by the solid arrow and Figure 2 the second polarized light P represented by the dashed arrow. Next, when the first polarized light S is projected to the left eye area through the left reflector 30, the second polarized light P is projected to the right eye area through the right reflector 40, so that the visual needs of both eyes can be met by the single light source 10. That is, the light splitting of the single light source 10 by the light splitting assembly 20 reduces the power consumption of the glasses module, 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.

[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 non-polarized light from the light source 10.

[0052] The light splitting assembly 20 is configured to split the light source 10 into the first polarized light S and the 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 the embodiment, after the incident light of the light source 10 is projected to the light splitting mirror surface of the light splitting assembly 20, the incident light is split into the first polarized light S and the second polarized light P which are perpendicular to each other, 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. That is, the light splitting of the light source 10 by the light splitting assembly 20 makes the glasses module provided by the application meet the visual needs of both eyes by the action of the single light source 10, avoiding the phenomenon that the weight of the whole glasses increases due to the need for large-capacity batteries caused by the configuration of the double light sources 10 in the traditional glasses module, thereby realizing the reduction of the demand for battery capacity by reducing the power consumption of the glasses module, significantly reducing the weight of the glasses module, and thus 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 with the electric field vibration direction 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 with the electric field vibration direction being the same as the light propagation direction of the incident light.

[0055] To sum up, the present application provides a glasses module and an extended reality device, the glasses module of the present application is integrated with a waveguide lens 100 and an optical-mechanical module 200, and replaces the configuration of the traditional double optical-mechanical module by setting a light splitting assembly 20 between the left reflecting element 30 and the right reflecting element 40 in the optical-mechanical module 200, the light splitting assembly 20 precisely splits the single light source 10 in the optical-mechanical module 200 into the first polarized light S and the 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 reflecting element 30, the second polarized light P projected by the light splitting assembly 20 is guided to the right eye area of the waveguide lens 100 through the right reflecting element 40, realizing that only one light source 10 can 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 10 through the light splitting assembly 20, thereby reducing the dependence on large-capacity batteries and further reducing the weight of the glasses module, thereby significantly improving the user's wearing experience.

[0056] Further, in some possible embodiments, referring to Figure 2 , Figure 2 is a schematic diagram of an electrically controlled steering layer involved in the embodiment scheme of the present application. The light splitting assembly 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 assembly 20 and is arranged towards the light source 10, the total reflection surface of the light splitting prism 21 constitutes the total reflection mirror surface of the light splitting assembly 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 a reflection enhancement film is coated on the total reflection surface; the light splitting prism 21 is configured to split the light source 10 into the first polarized light S and the second polarized light P perpendicular to each other through the light splitting mirror surface, and when the first polarized light S is projected to the left reflecting mirror surface of the light splitting assembly 20 through the light splitting mirror surface, the second polarized light P projected by the light splitting mirror surface is reflected to the right reflecting mirror surface of the light splitting assembly 20 through the total reflection mirror surface.

[0057] In the present embodiment, referring to Figure 2The light splitting surface of the light splitting prism 21 is configured to face the light source 10, and the light source 10 and the light splitting surface of the light splitting prism 21 are provided with a projection optical component 50. For example, the non-polarized light (i.e. incident light) from the light source 10 passes through the collimating lens 51 in the projection optical component 50, and then passes through the homogenizing lens 52 in the projection optical component 50, so that the incident light is more uniformly projected to the third relay lens 53 in the projection optical component 50, and then forms a light spot with a proper size, which is projected to the light splitting surface of the light splitting prism 21. Then, the non-polarized light projected by the projection optical component 50 is separated into the first polarized light S and the second polarized light P which are perpendicular to each other by the polarized light splitting film PBS1 attached to the light splitting surface of the light splitting prism 21, that is, the polarization separation of the non-polarized light is realized by the light splitting surface of the light splitting prism 21. Next, when the first polarized light S is projected to the left reflecting surface of the light splitting assembly 20 through the light splitting surface (i.e. light splitting mirror surface) of the light splitting prism 21, the second polarized light P is projected to the total reflecting surface of the light splitting assembly 20 through the light splitting mirror surface and the polarized light splitting film PBS1, and the reflection efficiency of the second polarized light P on the total reflecting surface is improved by the anti-reflection film coated on the total reflecting surface, so that more second polarized light P is reflected to the right reflecting surface of the light splitting assembly 20, effectively reducing the light loss of the reflected second polarized light P, and significantly improving the light transmission efficiency of the second polarized light P.

[0058] It should be noted that the total reflecting surface can be understood as the total reflecting surface of the light splitting prism 21, which is arranged on the opposite side of the light splitting surface, so as to effectively optimize the light propagation path of the second polarized light P from the polarized light splitting film PBS1 on the light splitting surface to the total reflecting surface, and reduce the light loss of the second polarized light P in the light transmission process.

[0059] The polarized light splitting film PBS1 is a PBS (Polarizing Beam Splitter) film, that is, when the non-polarized light is incident on the PBS film, the incident non-polarized light is separated into the first polarized light S (i.e. S polarized light, also called S state polarized light) and the second polarized light P (i.e. P polarized light, also called P state polarized light) which are perpendicular to each other, the first polarized light S transmits through the PBS film, and the second polarized light P transmits through the PBS film.

[0060] Further, in some other possible embodiments, referring to Figure 3 (a), the light splitting prism 21 comprises a first triangular prism J1 and a second triangular prism J2. The right angle side of the first triangular prism J1 is glued to the right angle side of the second triangular prism J2 to form a rhombic prism, and the hypotenuse of the first triangular prism J1 is arranged opposite to the hypotenuse of the second triangular prism J2, wherein the hypotenuse of the first triangular prism J1 constitutes the light splitting surface of the light splitting prism 21, and the hypotenuse of the second triangular prism J2 constitutes the total reflecting surface of the light splitting prism 21.

[0061] In this embodiment, refer to Figure 3 (a) The beam splitter prism 21 shown replaces the traditional dual-optical-engine module configuration by forming a rhomboid structure through bonding the right-angled side of the first triangular prism J1 and the right-angled side of the second triangular prism J2. Specifically, the hypotenuse of the first triangular prism J1 serves as the beam splitting surface of the beam splitter prism 21. By attaching a polarizing beam splitter film PBS1 to the beam splitting surface of the beam splitter prism 21, the unpolarized light projected by the projection optics 50 can be accurately decomposed into first polarized light S and second polarized light P with different polarization directions. This effectively reduces the power consumption of the glasses module, lessens the dependence on high-capacity batteries, and thus reduces the weight of the glasses module, significantly improving the user's wearing experience. Next, when the first polarized light S is reflected by the polarizing beam splitting film PBS1 attached to the beam splitting surface of the beam splitting prism 21 to the left reflecting mirror of the beam splitting assembly 20, an anti-reflection film is coated on the total reflection surface formed by the hypotenuse of the second triangular prism J2, which is set opposite to the hypotenuse of the first triangular prism J1. This allows the second polarized light P to be efficiently reflected to the right reflecting mirror of the beam splitting assembly 20, thereby reducing light loss during light transmission and significantly improving the imaging quality of the optomechanical module 200.

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

[0063] In this embodiment, the beam-splitting prism 21 provided in this application can also be a parallelogram prism, with the side of the parallelogram prism facing the light source 10 serving as the beam-splitting surface of the beam-splitting prism 21. This allows for the precise decomposition of unpolarized light projected by the projection optics 50 into first polarized light S and second polarized light P. Specifically, by attaching a polarizing beam-splitting film PBS1 to the side of the parallelogram prism facing the light source 10, the beam of a single light source 10 is split, replacing the traditional dual-optical-mechanical module configuration. This effectively reduces the power consumption of the glasses module, lessens the reliance on large-capacity batteries, and consequently reduces the weight of the glasses module, significantly improving the user's wearing experience. Furthermore, using the side of the parallelogram prism furthest from the light source 10 as the total internal reflection surface of the beam-splitting prism 21 allows the second polarized light P to be efficiently reflected to the right reflecting mirror of the beam-splitting assembly 20, thereby reducing light loss during light transmission and significantly improving the imaging quality of the optical-mechanical module 200.

[0064] Furthermore, in some other feasible embodiments, reference is made to... Figure 2The light splitting assembly 20 further comprises a reflecting prism 22 arranged between the left reflecting component 30 and the right reflecting component 40. A left reflecting surface of the reflecting prism 22 constitutes a left reflecting mirror surface of the light splitting assembly 20 facing a light splitting mirror surface of the light splitting assembly 20, and a right reflecting surface of the reflecting prism 22 constitutes a right reflecting mirror surface of the light splitting assembly 20 facing a total reflecting mirror surface of the light splitting assembly 20. When the first polarized light S is projected to the left reflecting component 30 through the left reflecting mirror surface, the second polarized light P is projected to the right reflecting component 40 through the right reflecting mirror surface.

[0065] In the embodiment, referring to Figure 2 The light splitting assembly 20 further comprises a reflecting prism 22 arranged above the light splitting prism 21 and between the left reflecting component 30 and the right reflecting component 40. Specifically, a left reflecting surface of the reflecting prism 22 constitutes a left reflecting mirror surface of the light splitting assembly 20 facing a light splitting mirror surface of the light splitting assembly 20, so that the first polarized light S projected by the light splitting mirror surface can be accurately reflected to the left reflecting component 30 arranged towards the left reflecting mirror surface. A right reflecting surface of the reflecting prism 22 constitutes a right reflecting mirror surface of the light splitting assembly 20 facing a total reflecting mirror surface of the light splitting assembly 20, so that the second polarized light P projected by the total reflecting mirror surface can be accurately reflected to the right reflecting component 40 arranged towards the right reflecting mirror surface. That is, the reflecting prism 22 is arranged above the light splitting prism 21 and between the left reflecting component 30 and the right reflecting component 40. The first / second polarized light is reflected to the left / right reflecting component through the left / right reflecting surface of the reflecting prism 22, 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 possible embodiments, referring to Figure 2 The left reflecting component 30 comprises a first relay lens 31, a left polarized light splitting prism 32, a left lens 33, a left modulation screen 34, and a left exit pupil lens 35. The left polarized light splitting prism 32 is arranged between the first relay lens 31 and the left lens 33. The first relay lens 31 is arranged towards a left reflecting mirror surface of the light splitting assembly 20. The left modulation screen 34 is arranged on a side of the left lens 33 away from the left polarized light splitting prism 32. The left polarized light splitting prism 32 is provided with a phase conversion surface and a left light splitting surface. The phase conversion surface is configured to convert the first polarized light S converged through the first relay lens 31 into the second polarized light P to project onto the left modulation screen 34 through the left lens 33. A half-wave film is attached to the phase conversion surface. The left light splitting surface is configured to project the polarized light image modulated through the left modulation screen 34 to a left eye region towards the left exit pupil lens 35. A polarized light splitting film PBS1 is attached to the left light splitting surface.

[0067] In the embodiment, referring to Figure 2, the first polarized light S is reflected to the left reflecting surface of the reflecting prism 22 via the polarized light splitting film PBS1 attached to the light splitting surface of the light splitting component 20, and then is incident to the first relay lens 31 after being reflected twice; the first polarized light S after being converged by the first relay lens 31 is incident to the phase conversion surface of the left polarized light splitting mirror 32 perpendicularly, and the first polarized light S becomes the second polarized light P after the phase of the first polarized light S is delayed by π / 2 times by the half-wave film attached to the phase conversion surface, and then is projected to the left lens 33 after passing through the left polarized light splitting mirror 32, and the second polarized light P after being converged is projected to the left light splitting surface of the left polarized light splitting mirror 32, and then is reflected to the left exit pupil lens 35 via the polarized light splitting film PBS1 attached to the left light splitting surface, and then enters the left coupling-in area 11 in the left waveguide sheet 101 in the left eye area after being converged by the left exit pupil lens 35, so that unnecessary light loss is reduced to significantly enhance the clarity of light imaging; next, the polarized optical image is coupled out to the left eye of the user via the left coupling-out area 13 of the left waveguide sheet 101.

[0068] It should be noted that, with reference to Figure 4 , Figure 4 is a schematic view of the waveguide lens 100 involved in the first embodiment of the present application. The waveguide lens 100 refers to a pair of independent waveguide sheets, specifically, the waveguide sheet arranged towards the left eye of the user is referred to as the left waveguide sheet 101, and the waveguide sheet arranged towards the right eye of the user is referred to as the right waveguide sheet 102; wherein the left coupling-in area 11 of the left waveguide sheet 101 is arranged towards Figure 5 the left light exit hole of the glasses holder 400 shown in the figure, the left coupling-out area 13 of the left waveguide sheet 101 is arranged towards the left eye of the user, the right coupling-in area 12 of the right waveguide sheet 102 is arranged towards Figure 5 the right light exit hole of the glasses holder 400 shown in the figure, and the left coupling-out area 13 of the right waveguide sheet 102 is arranged towards the right eye of the user. And the waveguide lens 100 can also be a whole waveguide sheet, which is not limited in the present application.

[0069] The left modulation screen 34 includes but is not limited to an LCOS (Liquid Crystal On Silicon, liquid crystal on silicon) screen; the half-wave film is a HWP (half-wave plate, half-wave plate) film, which delays the phase of the light perpendicular to the HWP film by π / 2 or its odd times. The left polarized light splitting mirror 32 can be understood as a PBS prism.

[0070] Further, in some possible embodiments, with reference to Figure 2The right reflecting component 40 comprises a second relay lens 41, a right polarized light splitter 42, a right lens 43, a right modulating screen 44 and a right exit pupil lens 45. The right polarized light splitter 42 is arranged between the second relay lens 41 and the right lens 43, the second relay lens 41 is arranged towards the right reflecting surface of the light splitting assembly 20, and the right modulating screen 44 is arranged on the side of the right lens 43 away from the right polarized light splitter 42. After the second polarized light P is projected to the second relay lens 41 for convergence through the right reflecting surface, the converged second polarized light P is projected to the right modulating screen 44 to form a polarized optical image according to the light propagation direction from the right polarized light splitter 42 to the right lens 43. The right light splitting surface of the right polarized light splitter 42 is configured to project the polarized optical image projected by the right modulating screen 44 through the right lens 43 to the right eye area towards the right exit pupil lens 45, and the right light splitting surface is attached with a polarized light splitting film PBS1.

[0071] In the embodiment, after the second polarized light P passes through the polarized light splitting film PBS1 attached to the light splitting surface of the light splitting assembly 20, the second polarized light P is reflected to the right reflecting surface of the reflecting prism 22 through the total reflecting surface of the light splitting assembly 20, and then is reflected twice by the right reflecting surface of the reflecting prism 22 to be incident to the second relay lens 41. After the second polarized light P is converged by the second relay lens 41, the converged second polarized light P passes through the right polarized light splitter 42 to be incident to the right lens 43 for convergence, and then is projected to the right modulating screen 44 to be modulated into a polarized optical image (i.e., the first polarized light S carrying image information) after convergence. After that, the converged second polarized light P passes through the right lens 43 to be incident to the left light splitting surface of the right polarized light splitter 42, and then is reflected to the right exit pupil lens 45 through the polarized light splitting film PBS1 attached to the right light splitting surface. After convergence by the right exit pupil lens 45, the second polarized light P enters the right in-coupling area 12 in the right waveguide sheet 102 in the right eye area, thereby reducing unnecessary light loss and significantly enhancing the clarity of light imaging. Next, the polarized optical image is coupled out of the right waveguide sheet 102 through the right out-coupling area 14 to the right eye of the user.

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

[0073] Further, in some other possible embodiments, referring to Figure 2 The optical-mechanical module 200 further comprises a projection optical component 50 arranged between the light source 10 and the light splitting assembly 20. The projection optical component 50 comprises a collimating lens 51, a uniform light lens 52 and a third relay lens 53. The uniform light lens 52 is arranged between the collimating lens 51 and the third relay lens 53, the collimating lens 51 is arranged towards the light source 10, and the third relay lens 53 is arranged towards the light splitting surface of the light splitting assembly 20.

[0074] In the embodiment, the non-polarized light rays (i.e. incident light) from the light source 10 are projected to the homogenizing lens 52 after converging by the collimating lens 51, so that the converged incident light is more uniformly projected to the third relay lens 53 for converging, so as to form a light spot of proper size to be projected to the light splitting surface of the light splitting assembly 20, thereby providing the light splitting surface with high-quality input of the light source 10 and significantly improving the light splitting efficiency of the light splitting surface.

[0075] Further, in other possible embodiments, referring to Figure 4 to Figure 5 The eyeglass module further includes an eyeglass holder 400 and an eyeglass housing 300, the left eye area includes a left in-coupling area 11 and a left out-coupling area 13, and the right eye area includes a right in-coupling area 12 and a right out-coupling area 14; the waveguide lens 100 is arranged between the eyeglass holder 400 and the eyeglass housing 300, the waveguide lens 100 is fixed to the eyeglass holder 400, and the light engine module 200 is arranged on a side of the waveguide lens 100 away from the eyeglass housing 300; the left exit pupil lens 35 of the left reflecting member 30 is arranged towards a left light exit hole of the light engine module 200, the left light exit hole is aligned with a left light through hole 401 of the eyeglass holder 400, the left light through hole 401 is arranged towards the left in-coupling area 11, and the left out-coupling area 13 is arranged on an opposite side of the user's right eye; the right exit pupil lens 45 of the right reflecting member 40 is arranged towards a right light exit hole of the light engine module 200, the right light exit hole is aligned with a right light through hole 402 of the eyeglass holder 400, the right light through hole 402 is arranged towards the right in-coupling area 12, and the right out-coupling area 14 is arranged on an opposite side of the user's right eye.

[0076] In the embodiment, referring to Figure 5The left light passing hole 401 and the right light passing hole 402 for light passing, three nose pad fixing holes 405, the left hinge hole 406, the right hinge hole 407, and the field of view area for fixing the waveguide lens 100 are arranged on the glasses holder 400. The waveguide lens 100 is arranged between the glasses holder 400 and the glasses shell 300, is fixed on the field of view area of the glasses holder 400, and is provided with the light engine module 200 on the side away from the glasses shell 300. The left light passing hole of the light engine module 200 is aligned with the left light passing hole 401 of the glasses holder 400, the right light passing hole of the light engine module 200 is aligned with the right light passing hole 402 of the glasses holder 400, the left exit pupil lens 35 of the left reflecting element 30 in the light engine module 200 is arranged towards the left light passing hole of the light engine module 200, and the right exit pupil lens 45 of the right reflecting element 40 in the light engine module 200 is arranged towards the right light passing hole of the light engine module 200. In addition, after the nose pad positioning hole of the nose pad 500 is aligned with any one of the three nose pad fixing holes 405, the nose pad is fixed on the glasses holder 400 through the nose pad fixing hole 405 aligned with the nose pad positioning hole by the nose pad fixing member. The left hinge hole 406 is arranged between the two left fixing holes of the left temple 601 and is aligned with the two left fixing holes, and the left temple 601 and the glasses holder 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 is aligned with the two right fixing holes, and the right temple 602 and the glasses holder 400 are hingedly connected through the right temple pin 404.

[0077] In another embodiment, referring to Figure 6 , Figure 6 is a schematic diagram of the light engine module packaging according to the first embodiment of the present application. The light engine module further comprises a light engine shell 60. The light source 10, the light splitting assembly 20, the left reflecting element 30, the right reflecting element 40, and the projection optical element 50 are arranged in the light engine shell 60. Figure 6

[0078] ​In summary, the application provides an eyeglasses module and an extended reality device, the eyeglasses module of the application is integrated with a waveguide lens 100 and an optical engine module 200, and the configuration of the traditional double optical engine module is replaced by a light splitting assembly 20 arranged between the left reflecting element 30 and the right reflecting element 40 in the optical engine module 200, the single light source 10 in the optical engine module 200 is accurately split into the first polarized light S and the second polarized light P by the light splitting assembly 20, and when the first polarized light S is projected to the left eye area of the waveguide lens 100 through the left reflecting element 30, the second polarized light P projected by the light splitting assembly 20 is guided to the right eye area of the waveguide lens 100 through the right reflecting element 40, so that the visual needs of both eyes can be met by only one light source 10. That is, the light splitting of the single light source 10 by the light splitting assembly 20 reduces the power consumption of the eyeglasses module, thereby reducing the dependence on large-capacity batteries and further reducing the weight of the eyeglasses module, thereby significantly improving the wearing experience of the user.

[0079] In addition, in order to achieve the above-mentioned purpose, the application also provides an extended reality device, which comprises the eyeglasses module of any one of the above.

[0080] It should be noted that in this paper, the term "including", "containing" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or system. Without more limitations, the element defined by the sentence "including a…" does not exclude the presence of another identical element in the process, method, article or system including the element.

[0081] The above-mentioned application embodiment serial numbers are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0082] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the application can be embodied in the form of a software product, which is stored in a storage medium such as the above-mentioned ROM / RAM, magnetic disc, optical disc, and includes a plurality of instructions for making an extended reality device (which can be a mobile phone, computer, server, or network device) execute the method described in each embodiment of the application.

[0083] The above merely 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 using the content 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. An eyeglass module, comprising: 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 reflecting component and a right reflecting component, the light source is arranged towards the light splitting component, the left reflecting component is arranged towards a left eye area of the waveguide lens, the right reflecting component is arranged towards a right eye area of the waveguide lens, and the light splitting component is arranged between the left reflecting component and the right reflecting component; The light splitting component is configured to split 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 component, and the second polarized light is projected to the right eye area through the right reflecting component; wherein The light splitting component comprises a light splitting prism and a reflecting prism, the light splitting prism is a parallelogram prism, one side of the parallelogram prism towards the light source constitutes a light splitting surface of the light splitting prism, and the other side of the parallelogram prism away from the light source constitutes a total reflection surface of the light splitting prism, a polarized light splitting film is attached to the light splitting surface, and an anti-reflection film is coated on the total reflection surface; The reflecting prism is arranged between the left reflecting component and the right reflecting component, a left reflecting surface of the reflecting prism constitutes a left reflecting mirror surface of the light splitting component and is arranged towards a light splitting mirror surface of the light splitting component, and a right reflecting surface of the reflecting prism constitutes a right reflecting mirror surface of the light splitting component and is arranged towards a total reflection mirror surface of the light splitting component; The left reflecting component comprises a first relay lens, a left polarized light splitting mirror, a left lens, a left modulation screen and a left exit pupil lens, a phase conversion surface attached with a half-wave plate film and a left light splitting surface attached with a polarized light splitting film are arranged on the left polarized light splitting mirror; The left reflecting component is arranged to vertically incident the first polarized light converged through the first relay lens to the phase conversion surface of the left polarized light splitting mirror, convert the phase of the first polarized light to the second polarized light by delaying π / 2 through the half-wave plate film attached to the phase conversion surface, and project the second polarized light to the left lens for beam convergence, form a polarized optical image through the left modulation screen, project the polarized optical image to the left light splitting surface of the left polarized light splitting mirror through the left lens, and guide the polarized optical image converged through the left exit pupil lens into the left eye area through the left light splitting surface attached with the polarized light splitting film.

2. The eyeglass module of claim 1, wherein, The light splitting prism is configured to split the light source into the first polarized light and the second polarized light through the light splitting mirror surface, and when the first polarized light is projected to the left reflecting mirror surface of the light splitting component through the light splitting mirror surface, the second polarized light projected by the light splitting mirror surface is reflected to the right reflecting mirror surface of the light splitting component through the total reflection mirror surface.

3. The eyeglass module of claim 1, wherein the first and second lenses are configured to be positioned in front of a user's eyes when the eyeglass module is worn by the user. The reflecting prism is arranged to project the second polarized light to the right reflecting component through the right reflecting mirror surface when the first polarized light is projected to the left reflecting component through the left reflecting mirror surface.

4. The eyeglass module of claim 1, wherein the first and second lenses are configured to be positioned in front of a user's eyes. The left polarized light splitting mirror is arranged between the first relay lens and the left lens, the first relay lens is arranged towards the left reflecting mirror surface of the light splitting component, and the left modulation screen is arranged on the side of the left lens away from the left polarized light splitting mirror.

5. The eyeglass module of claim 1, wherein the eyeglass module is configured to be worn on a head of a user. The right reflecting component comprises a second relay lens, a right polarized beam splitter, a right lens, a right modulation screen and a right exit pupil lens; The right polarized beam splitter is arranged between the second relay lens and the right lens, the second relay lens is arranged towards the right reflecting mirror surface of the beam splitting component, and the right modulation screen is arranged on the side of the right lens away from the right polarized beam splitter; The second polarized light is projected to the second relay lens for convergence after passing through the right reflecting mirror surface, and the converged second polarized light is projected to the right modulation screen to form a polarized optical image according to the light propagation direction from the right polarized beam splitter to the right lens; The right light splitting surface of the right polarized 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 towards the right exit pupil lens, and a polarized light splitting film is attached to the right light splitting surface.

6. The eyeglass module of claim 1, wherein the eyeglass module is configured to be worn on a head of a user. The optical-mechanical module further comprises a projection optical component arranged between the light source and the beam splitting component; The projection optical component comprises a collimating lens, a uniform light lens and a third relay lens, the uniform light lens is arranged between the collimating lens and the third relay lens, the collimating lens is arranged towards the light source, and the third relay lens is arranged towards the light splitting mirror surface of the beam splitting component.

7. The eyeglass module of claim 1, wherein the eyeglass module is configured to be worn on a head of a user. The glasses module further comprises a glasses support and a glasses housing, the left eye area comprises a left in-coupling area and a left out-coupling area, and the right eye area comprises a right in-coupling area and a right out-coupling area; The waveguide lens is arranged between the glasses support and the glasses housing, the waveguide lens is fixed to the glasses support, and the waveguide lens is provided with the optical-mechanical module on the side away from the glasses housing; The left exit pupil lens of the left reflecting component is arranged towards the left light exit hole of the optical-mechanical module, the left light exit hole is aligned with the left light transmission hole of the glasses support, the left light transmission hole is arranged towards the left in-coupling area, and the left out-coupling area is arranged on the opposite side of the right eye of the user; The right exit pupil lens of the right reflecting component is arranged towards the right light exit hole of the optical-mechanical module, the right light exit hole is aligned with the right light transmission hole of the glasses support, the right light transmission hole is arranged towards the right in-coupling area, and the right out-coupling area is arranged on the opposite side of the right eye of the user.

8. An extended reality device, comprising: The extended reality device comprises the glasses module of any one of claims 1 to 7.

Images