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, and the eyeglass module comprises a waveguide lens and an optical-mechanical module integrated with a light source, a light splitting assembly, a left polarization beam splitting piece and a right polarization beam splitting piece; the light source is arranged towards the light splitting assembly; the light splitting assembly is arranged between the left polarization beam splitting piece and the right polarization beam splitting piece; a left light exit surface of the left polarization beam splitting piece is arranged towards a left eye area of the waveguide lens; and a right light exit surface of the right polarization beam splitting piece is arranged towards a right eye area of the waveguide lens; the light source is split into first polarized light and second polarized light through the light splitting assembly; the first polarized light is converted into the second polarized light through a polarization conversion surface of the left polarization beam splitting piece and is projected to the left eye area towards the left light exit surface; and the second polarized light is projected to the right eye area towards the right light exit surface through the right polarization beam splitting piece. 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 a user.

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 left and right lenses are provided with light machine modules to provide incident light sources to provide users with 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 the user.

[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] In order to achieve the above-mentioned 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 polarization beam splitting element and a right polarization beam splitting element, the light source is arranged towards the light splitting assembly, the light splitting assembly is arranged between the left polarization beam splitting element and the right polarization beam splitting element, the left outlight surface of the left polarization beam splitting element is arranged towards the left eye area of the waveguide lens, and the right outlight surface of the right polarization beam splitting element is arranged towards the right eye area of the waveguide lens.

[0007] The light source is divided into first polarized light and second polarized light through the light splitting assembly, the first polarized light is converted into the second polarized light through the polarization conversion surface of the left polarization beam splitting element and projected to the left eye area towards the left outlight surface, and the second polarized light is projected to the right eye area towards the right outlight surface through the right polarization beam splitting element.

[0008] In an embodiment, the left polarization beam splitting element comprises a left relay lens, a left polarization light splitting module, a left lens and a left modulation screen.

[0009] The left polarization light splitting module is provided with the left relay lens and the left lens on two sides thereof respectively, the left relay lens is arranged towards the left reflecting mirror surface of the light splitting assembly, the left lens is provided with the left modulation screen on a side thereof away from the left polarization light splitting module, and a left light exit surface of the left polarization light splitting module constitutes a left light exit surface of the left polarization beam splitting element and is arranged towards a left eye area of the waveguide lens;

[0010] The first polarized light is projected to a phase conversion surface of the left polarization light splitting module through an optical path of the left relay lens to the left reflecting mirror surface, is converted into the second polarized light, and is converged to the left modulation screen through the left lens to be modulated into polarized image light.

[0011] The polarized image light is projected to a left light splitting surface of the left polarization light splitting module through the left modulation screen and the left lens, is reflected to a phase delay surface of the left polarization light splitting module through the left light splitting surface, is twice phase delayed into the second polarized light, and is projected to the left eye area towards the left light exit surface through the left light splitting surface; wherein,

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

[0013] In an embodiment, the left polarization beam splitting element further comprises a left exit pupil lens, and the left polarization light splitting module further comprises a first polarization light splitting prism, a second polarization light splitting prism and a left reflecting mirror.

[0014] The hypotenuse of the first polarization light splitting prism and the hypotenuse of the second polarization light splitting prism are oppositely arranged to constitute a left rectangular prism arranged between the left relay lens and the left lens.

[0015] The hypotenuse of the first polarization light splitting prism and the hypotenuse of the second polarization light splitting prism are fixedly connected with a polarization light splitting film therebetween to constitute a left light splitting surface of the left polarization light splitting module, a phase conversion film is attached to a side of the first polarization light splitting prism towards the left relay lens to constitute a phase conversion surface of the left polarization light splitting module, and a phase delay film is attached to a side of the second polarization light splitting prism towards the left reflecting mirror to constitute a phase delay surface of the left polarization light splitting module.

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

[0017] In an embodiment, the right polarization beam splitting element comprises a right relay lens, a right polarization light splitting module, a right lens and a right modulation screen.

[0018] The right polarization light splitting module is provided with the right relay lens and the right lens on both sides, the right relay lens is arranged towards the right reflecting surface of the light splitting assembly, the right lens is provided with the right modulation screen on the side away from the right polarization light splitting module, and the right light exit surface of the right polarization light splitting module constitutes the right light exit surface of the right polarization beam splitting component and is arranged towards the right eye area of the waveguide lens;

[0019] The second polarization light passes through the right relay lens, the right polarization light splitting module and the right lens in sequence after the right reflecting surface, is projected to the right modulation screen, and is modulated into polarization image light by the right modulation screen, and the polarization image light is the first polarization light carrying the projection light image of the light source;

[0020] The polarization image light passes through the right lens and is projected to the right light splitting surface of the right polarization light splitting module through the right modulation screen, is reflected to the phase delay surface of the right polarization light splitting module through the right light splitting surface, is twice phase delayed into the second polarization light after the phase delay, and is projected to the right eye area towards by the right light splitting surface.

[0021] In an embodiment, the right polarization beam splitting component further comprises a right exit pupil lens, and the right polarization light splitting module further comprises a third polarization light splitting prism, a fourth polarization light splitting prism and a right reflecting mirror;

[0022] The hypotenuse of the third polarization light splitting prism is arranged opposite to the hypotenuse of the fourth polarization light splitting prism to constitute a right rectangular prism arranged between the right relay lens and the right lens,

[0023] The hypotenuse of the third polarization light splitting prism is arranged opposite to the hypotenuse of the fourth polarization light splitting prism to constitute a right rectangular prism arranged between the right relay lens and the right lens,

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

[0025] In an embodiment, the light splitting assembly comprises a light splitting prism, the light splitting surface of the light splitting prism constitutes the light splitting mirror surface of the light splitting assembly and is arranged towards the light source, the total reflection surface of the light splitting prism is arranged on the opposite surface of the light splitting surface, the polarization light splitting film is attached to the light splitting surface, and the increase reflection film is coated on the total reflection surface;

[0026] 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 by the total reflection 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.

[0027] In an embodiment, the light-splitting prism comprises:

[0028] The first and second triangular prisms are arranged oppositely with their hypotenuses, and 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.

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

[0030] In an embodiment, the light-splitting assembly further comprises a reflecting prism arranged between the left and right polarized beam-splitting pieces, the left reflecting surface of the reflecting prism constitutes the left reflecting mirror surface of the light-splitting assembly facing 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 facing the total reflection mirror surface of the light-splitting assembly.

[0031] The reflecting prism is arranged to project the second polarized light to the right polarized beam-splitting piece by the right reflecting mirror surface when the first polarized light is projected to the left polarized beam-splitting piece by the left reflecting mirror surface.

[0032] In an embodiment, the light engine module further comprises a projection optical piece arranged between the light source and the light-splitting assembly.

[0033] The projection optical piece comprises a collimating lens, a homogenizing lens, and a relay lens, the homogenizing lens is provided with the collimating lens and the relay lens on its two sides respectively, the collimating lens is arranged towards the light source, and the relay lens is arranged towards the light-splitting mirror surface of the light-splitting assembly.

[0034] In addition, to achieve the above-mentioned purpose, the application further provides an extended reality device, which comprises the above-mentioned any one of the eyeglass modules.

[0035] The application provides an eyeglass module and an extended reality device, the eyeglass module provided by the application is integrated with a waveguide lens and an optical engine module, and a light splitting component is packaged in the optical engine module to accurately split a single light source arranged towards the light splitting component into first polarized light and second polarized light, thereby replacing the configuration of a traditional double optical engine module and effectively reducing the energy consumption of the light source; next, since a left polarized beam splitting piece and a right polarized beam splitting piece are arranged on the two sides of the light splitting component, when the first polarized light is converted into the second polarized light by the polarized conversion surface of the left polarized beam splitting piece and is guided to the left eye area of the waveguide lens towards the left light output surface of the left polarized beam splitting piece, the second polarized light projected by the light splitting component through the right polarized beam splitting piece is projected to the right eye area of the waveguide lens towards the right light output surface of the right polarized beam splitting piece, thereby realizing the visual display requirement of both eyes by using only one light source. That is, the power consumption of the eyeglass module is significantly reduced by the light splitting of the light splitting component on the single light source, the dependence on a large-capacity battery is reduced, and thus the overall weight of the eyeglass module is reduced, greatly improving the wearing experience of the user. BRIEF DESCRIPTION OF DRAWINGS

[0036] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate an embodiment consistent with the present application and, together with the description, serve to explain the principles of the application.

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings required to be used in the embodiments or prior art description will be briefly introduced. Obviously, those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0038] Figure 1 is a structure block diagram of the eyeglass module related to the first embodiment of the present application;

[0039] Figure 2 is an optical principle diagram of the eyeglass module related to the first embodiment of the present application;

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

[0041] Figure 4 is a schematic diagram of the left polarized light splitting module related to the first embodiment of the present application;

[0042] Figure 5 is a schematic diagram of the right polarized light splitting module related to the first embodiment of the present application;

[0043] Figure 6 is a schematic diagram of the light splitting prism related to the first embodiment of the present application;

[0044] Figure 7Figure 1 is a schematic diagram of a glasses structure according to an embodiment of the present application;

[0045] Figure 8 Figure 2 is a schematic diagram of an optical-mechanical module package according to the first embodiment of the present application.

[0046] Explanation of reference numerals:

[0047] 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-mechanical 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 polarized light splitting component; 31, left relay lens; 32, left polarized light splitting module; L1, first polarized light splitting prism; L2, second polarized light splitting prism; L3, left reflecting mirror; 33, left lens; 34, left modulation screen; 35, left exit pupil lens; 40, right polarized light splitting component; 41, right relay lens; 42, right polarized light splitting module; R1, third polarized light splitting prism; R2, fourth polarized light splitting prism; R3, right reflecting mirror; 43, right lens; 44, right modulation screen; 45, right exit pupil lens; 50, projection optical component; 51, collimating lens; 52, homogenizing lens; 53, third relay lens; S, first polarized light; P, second polarized light; 300, glasses housing; 400, glasses support; 500, nose pad; 601, left temple; 602, right temple; 401, left light passage hole; 402, right light passage hole; 403, left temple pin; 404, right temple pin; 405, nose pad fixing hole; 406, left hinge hole; 47, right hinge hole.

[0048] 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

[0049] 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 protection scope of the present application.

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

[0051] 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 each embodiment can be combined with each other, but it must be based on the realization of the 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.

[0052] The exemplary embodiments will be described in detail herein with reference to 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.

[0053] In the field of XR (eXtended Reality) technology, the glasses module as an important carrier of XR technology, the design and the degree of perfection of its 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 and the glasses body in one, 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.

[0054] To solve the technical defects of the above-mentioned existing glasses module that the large-capacity battery required by the dual light source configuration leads to an increase in the weight of the whole glasses, the present application provides a glasses module and an extended reality device.

[0055] The embodiments of the present application provide a glasses module, referring to Figure 1 , as shown in Figure 1is a structure block diagram of a glasses module involved in the first embodiment of the present application. The glasses module comprises a waveguide lens 100 and an optical engine module 200, the optical engine module comprising a light source 10, a light splitting assembly 20, a left polarized beam splitting element 30 and a right polarized beam splitting element 40, the light source 10 being arranged towards the light splitting assembly 20, the light splitting assembly 20 being arranged between the left polarized beam splitting element 30 and the right polarized beam splitting element 40, a left light exit surface of the left polarized beam splitting element 30 being arranged towards a left eye area of the waveguide lens 100, and a right light exit surface of the right polarized beam splitting element 40 being arranged towards a right eye area of the waveguide lens 100.

[0056] In the present embodiment, the glasses module provided by the present application can be understood as an XR glasses, which can be an AR (Augmented Reality) technology, a VR (Virtual Reality) technology, and an MR (Mixed Reality) technology, or a combination of one or more of the above technologies. For example, referring to Figure 1 In the optical engine 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 polarized beam splitting element 30 and the right polarized beam splitting element 40. The incident light of the single light source 10 is split by the light splitting assembly 20 to form Figure 1 a first polarized light S represented by the solid arrow shown in the figure and Figure 2 a second polarized light P represented by the dashed arrow shown in the figure. Next, when the first polarized light S is converted into the second polarized light P by the polarization conversion surface of the left polarized beam splitting element 30 and is guided to the left eye area of the waveguide lens 100 towards the left light exit surface of the left polarized beam splitting element 30, the second polarized light P projected by the light splitting assembly 20 is projected to the right eye area of the waveguide lens 100 towards the right light exit surface of the right polarized beam splitting element 40 through the right polarized beam splitting element 40, so as to meet the visual display requirements of both eyes by using only one light source 10. 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, and thus significantly improving the wearing experience of the user.

[0057] The light source 10 is split into the first polarized light S and the second polarized light P by the light splitting assembly 20, the first polarized light S is converted into the second polarized light P by the polarization conversion surface of the left polarized beam splitting element 20 and is projected to the left eye area towards the left light exit surface, and the second polarized light P is projected to the right eye area towards the right light exit surface through the right polarized beam splitting element 40.

[0058] In the embodiment, after the incident light of the light source 10 is projected to the light splitting 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, then the first polarized light S is converted into the second polarized light P by the polarization conversion surface of the left polarization beam splitter 30, and is guided to the left eye area of the waveguide lens 100 which is oriented by the left light output surface of the left polarization beam splitter 30; at this time, the second polarized light P is projected to the right eye area of the waveguide lens 100 which is oriented by the right light output surface of the right polarization beam splitter 40. That is, the light splitting of the light source 10 by the light splitting assembly 20 enables the glasses module provided by the application to meet the visual requirements of both eyes by the action of a single light source 10, avoiding the phenomenon that the weight of the whole glasses increases due to the need of a large-capacity battery for the configuration of the traditional glasses module with double light sources 10, thereby realizing the reduction of the demand for the capacity of the battery by reducing the power consumption of the glasses module, significantly reducing the weight of the glasses module, and greatly improving the wearing experience of the user.

[0059] It should be noted that the first polarized light S can be understood as S polarized light, which is a 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 is a polarized light with the electric field vibration direction the same as the light propagation direction of the incident light.

[0060] In summary, the glasses module and the extended reality device provided by the application integrate the waveguide lens 100 and the light machine module 200, and encapsulate the light splitting assembly 20 in the light machine module 200 to accurately split the single light source 10 arranged towards the light splitting assembly 20 into the first polarized light S and the second polarized light P, thereby replacing the configuration of the traditional double light machine module and effectively reducing the energy consumption of the light source 10; next, since the left polarization beam splitter 30 and the right polarization beam splitter 40 are arranged on the two sides of the light splitting assembly 20, when the first polarized light P is converted into the second polarized light S by the polarization conversion surface of the left polarization beam splitter 30 and is guided to the left eye area of the waveguide lens 100 which is oriented by the left light output surface of the left polarization beam splitter 30, the second polarized light S projected by the light splitting assembly 20 is projected to the right eye area of the waveguide lens 100 which is oriented by the right light output surface of the right polarization beam splitter 40 by the right polarization beam splitter 40, thereby realizing the visual display requirements of both eyes by using only one light source 10. That is, the light splitting of the single light source 10 by the light splitting assembly 20 significantly reduces the power consumption of the glasses module, reduces the dependence on large-capacity batteries, and thereby reduces the overall weight of the glasses module, greatly improving the wearing experience of the user.

[0061] Further, in some possible embodiments, with reference to Figure 2 , Figure 2is the optical principle diagram of the glasses module involved in the first embodiment of the present application. The left polarization beam splitting component 30 comprises a left relay lens 31, a left polarization light splitting module 32, a left lens 33 and a left modulation screen 34; the left relay lens 31 and the left lens 33 are respectively arranged on the two sides of the left polarization light splitting module 32, the left relay lens 31 is arranged towards the left reflecting mirror surface of the light splitting assembly, the left lens 33 is arranged with the left modulation screen 34 on the side away from the left polarization light splitting module 32, the left light exit surface of the left polarization light splitting module 32 constitutes the left light exit surface of the left polarization beam splitting component 30 and is arranged towards the left eye area of the waveguide lens; the first polarized light is projected to the phase conversion surface of the left polarization light splitting module 32 through the optical path of the left reflecting mirror surface to the left relay lens 31 and is converted into the second polarized light, the second polarized light is converged to the left modulation screen 34 through the left lens 33 and is modulated into the polarized image light, the polarized image light is the first polarized light carrying the projection light image of the light source; the polarized image light passes through the left modulation screen 34, passes through the left lens 33, is projected to the left light splitting surface of the left polarization light splitting module 32, is reflected to the phase delay surface of the left polarization light splitting module 32 through the left light splitting surface, is twice phase delayed into the second polarized light after the phase delay surface, passes through the left light splitting surface and is projected to the left eye area towards the left light exit surface; wherein the phase delay surface of the left polarization light splitting module 32 is the polarization conversion surface of the left polarization beam splitting component 30.

[0062] In the present embodiment, with reference to Figure 2 , the left relay lens 31 converges the first polarized light S projected by the left reflecting mirror surface of the light splitting assembly 20, perpendicularly projects the converged first polarized light S to the phase conversion surface of the left polarization light splitting module 32, after the phase conversion surface delays the phase of the first polarized light S by π / 2 times to become the second polarized light P, projects to the left lens 33 through the left polarization light splitting module 32 to converge, projects the converged second polarized light P to the left modulation screen 34 to modulate into the polarized image light (i.e. the first polarized light S carrying the projection light image of the light source), projects to the left light splitting surface of the left polarization light splitting module 32 through the left lens 33, reflects to the phase delay surface of the left polarization light splitting module 32 through the left light splitting surface, delays the phase of the first polarized light S by 1 / 4 wavelength through the phase delay surface, reaches the left reflecting mirror L3 surface of the left polarization light splitting module 32, and is reflected by the left reflecting mirror L3 surface to pass through the phase delay surface of the left polarization light splitting module 32 again, so that the first polarized light S after the phase delay by 1 / 4 wavelength is delayed by 1 / 4 wavelength again, becomes the second polarized light P, projects to the left exit pupil lens 35 in the left polarization beam splitting component 30 through the left polarization light splitting module 32, and the second polarized light P converged through the left exit pupil lens 35 can be more accurately projected to the left coupling-in area 11 in the left waveguide lens 101, thereby reducing unnecessary light loss to significantly enhance the clarity of light imaging; next, the projection light image carried by the second polarized light P is coupled out through the left coupling-out area 13 of the left waveguide lens 101 to the left eye of the user.

[0063] It should be noted that the above description is only a specific implementation of the present application. The present application is not limited to the above description. For example, the present application can also be implemented as follows. Figure 3 , Figure 3 is a schematic diagram of a waveguide lens 100 related to the first embodiment of the present application. The waveguide lens 100 refers to a pair of mutually independent waveguide pieces. Specifically, a waveguide piece arranged towards the left eye of a user is referred to as a left waveguide piece 101, and a waveguide piece arranged towards the right eye of a user is referred to as a right waveguide piece 102. The left coupling-in area 11 of the left waveguide piece 101 is arranged towards the left light exit hole of the glasses holder 400 shown in the figure, and the left coupling-out area 13 of the left waveguide piece 101 is arranged towards the left eye of the user. The right coupling-in area 12 of the right waveguide piece 102 is arranged towards 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 piece 102 is arranged towards the right eye of the user. The waveguide lens 100 can also be a whole piece of waveguide piece, which is not limited in the present application. Figure 5 is a schematic diagram of a waveguide lens 100 related to the first embodiment of the present application. The waveguide lens 100 refers to a pair of mutually independent waveguide pieces. Specifically, a waveguide piece arranged towards the left eye of a user is referred to as a left waveguide piece 101, and a waveguide piece arranged towards the right eye of a user is referred to as a right waveguide piece 102. The left coupling-in area 11 of the left waveguide piece 101 is arranged towards the left light exit hole of the glasses holder 400 shown in the figure, and the left coupling-out area 13 of the left waveguide piece 101 is arranged towards the left eye of the user. The right coupling-in area 12 of the right waveguide piece 102 is arranged towards 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 piece 102 is arranged towards the right eye of the user. The waveguide lens 100 can also be a whole piece of waveguide piece, which is not limited in the present application. Figure 5 is a schematic diagram of a waveguide lens 100 related to the first embodiment of the present application. The waveguide lens 100 refers to a pair of mutually independent waveguide pieces. Specifically, a waveguide piece arranged towards the left eye of a user is referred to as a left waveguide piece 101, and a waveguide piece arranged towards the right eye of a user is referred to as a right waveguide piece 102. The left coupling-in area 11 of the left waveguide piece 101 is arranged towards the left light exit hole of the glasses holder 400 shown in the figure, and the left coupling-out area 13 of the left waveguide piece 101 is arranged towards the left eye of the user. The right coupling-in area 12 of the right waveguide piece 102 is arranged towards 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 piece 102 is arranged towards the right eye of the user. The waveguide lens 100 can also be a whole piece of waveguide piece, which is not limited in the present application.

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

[0065] Further, in other possible embodiments, referring to Figure 2 and Figure 4 , Figure 4 is a schematic diagram of a left polarized light splitting module related to the first embodiment of the present application. The left polarized light splitting piece 30 further includes a left exit pupil lens 35, and the left polarized light splitting module 32 further includes a first polarized light splitting prism L1, a second polarized light splitting prism L2, and a left mirror L3. The hypotenuse of the first polarized light splitting prism L1 is arranged opposite to the hypotenuse of the second polarized light splitting prism L2 to form a left rectangular prism arranged between the left relay lens 31 and the left lens 33. The polarized light splitting film PBS1 is fixedly connected between the hypotenuse of the first polarized light splitting prism L1 and the hypotenuse of the second polarized light splitting prism L2 to form a left light splitting surface of the left polarized light splitting module 32. The phase conversion film is attached to one side of the first polarized light splitting prism L1 facing the left relay lens 31 to form a phase conversion surface of the left polarized light splitting module 32. The phase delay film is attached to one side of the second polarized light splitting prism L2 facing the left mirror L3 to form a phase delay surface of the left polarized light splitting module 32. The left exit pupil lens 35 is arranged on the side of the first polarized light splitting prism L1 away from the phase delay surface, and the side of the first polarized light splitting prism L1 away from the phase delay surface forms a left light ray exit surface of the left polarized light splitting module 32.

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

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

[0068] For example, with reference to Figure 2 , the left relay lens 31 converges the first polarized light S projected by the left mirror surface of the splitting assembly 20, and vertically projects the converged first polarized light S onto the phase conversion surface of the left polarization splitting module 32. The phase conversion film attached to the phase conversion surface causes the phase delay of the first polarized light S to be multiplied by π / 2 to become the second polarized light P, which is then projected to the left lens 33 through the left polarization splitting module 32 for convergence. After the converged second polarized light P is modulated into polarized image light (i.e., the first polarized light S carrying the projected light image) by the left modulation screen 34, it is projected to the left splitting surface of the left polarization splitting module 32 through the left lens 33, and is reflected to the phase delay surface of the left polarization splitting module 32 by the polarization splitting film PBS1 attached to the left splitting surface. The phase delay film attached to the phase delay surface causes the phase delay of the first polarized light S to be 1 / 4 wavelength, which then reaches the surface of the left mirror L3 of the left polarization splitting module 32. The reflection of the surface of the left mirror L3 causes the first polarized light S, which has been phase delayed by 1 / 4 wavelength, to be further phase delayed by 1 / 4 wavelength, becoming the second polarized light P, which is then projected to the left exit pupil lens 35 in the left polarization beam splitting piece 30 through the left polarization splitting module 32. The second polarized light P, which has been converged by the left exit pupil lens 35, can be more accurately projected to the left in-coupling region 11 in the left waveguide sheet 101, thereby reducing unnecessary light loss and significantly enhancing the clarity of light imaging. Subsequently, the projected light image carried by the second polarized light P is coupled out of the left eye of the user via the left out-coupling region 13 of the left waveguide sheet 101.

[0069] Further, in some possible embodiments, with reference to Figure 2The right polarization beam splitter 40 includes a right relay lens 41, a right polarization beam splitter module 42, a right lens 43, and a right modulation screen 44. The right relay lens 41 and right lens 43 are respectively disposed on both sides of the right polarization beam splitter module 42. The right relay lens 41 is positioned facing the right reflecting mirror of the beam splitter assembly. The right modulation screen 44 is disposed on the side of the right lens 43 away from the right polarization beam splitter module 42. The right light emission surface of the right polarization beam splitter module 42 constitutes the right light emission surface of the right polarization beam splitter 40, which is positioned facing the right eye region of the waveguide lens. The second polarized light passes through the right reflecting mirror and sequentially... After passing through the right relay lens 41, the right polarization beam splitter module 42, and the right lens 43, the light is projected onto the right modulation screen 44. The right modulation screen 44 modulates the second polarized light into a polarized image light, which is the first polarized light carrying the projection image of the light source. The polarized image light passes through the right modulation screen 44, passes through the right lens 43, and is projected onto the right beam splitter surface of the right polarization beam splitter module 42. After being reflected by the right beam splitter surface and second-phase delayed by the phase delay surface of the right polarization beam splitter module 42, the light passes through the right beam splitter surface and is projected onto the right eye region facing the right light emission surface.

[0070] In this embodiment, refer to Figure 2 The second polarized light P passes through the polarizing beam splitter film PBS1 attached to the beam splitter surface of the beam splitter assembly 20 and is then projected onto the total internal reflection mirror of the beam splitter assembly 20. The second polarized light P is reflected by the total internal reflection mirror to the right reflecting surface of the reflecting prism 22 for secondary reflection, and then incident on the right relay lens 41. The second polarized light P, after being converged by the right relay lens 41, passes through the right polarizing beam splitter module 42 and is projected onto the right lens 43 for convergence. The converged second polarized light P is then projected onto the right modulation screen 44 and modulated into polarized image light (i.e., the first polarized light S carrying the projected light image of the light source). This light then passes through the right lens 43 and is projected onto the right beam splitter surface of the right polarizing beam splitter module 42, and passes through the polarizing beam splitter film PBS1 attached to the right beam splitter surface. S1 is reflected to the phase delay surface of the right polarization beam splitter 42, and the phase of the first polarized light S is delayed by 1 / 4 wavelength by the phase delay surface before reaching the surface of the right reflector R3 of the right polarization beam splitter 42. After being reflected by the surface of the right reflector R3, it passes through the phase delay surface of the right polarization beam splitter 42 again, so that the first polarized light S, which is already delayed by 1 / 4 wavelength, is delayed by another 1 / 4 wavelength and becomes the second polarized light P. Then, it passes through the right beam splitter surface of the right polarization beam splitter 42 and is projected onto the right coupling region 12 of the right waveguide 102, which is facing the right light emission surface of the right polarization beam splitter 42. Next, the projection light image carried by the second polarized light P is coupled out through the right coupling region 14 of the right waveguide 102 to the user's right eye.

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

[0072] Further, in some other possible embodiments, with reference to Figure 2 and Figure 5 , Figure 5 is a schematic diagram of a right-polarized light splitting module involved in the first embodiment of the present application. The right-polarized light splitting module 42 further comprises a right-pupil lens 45, and the right-polarized light splitting module 42 further comprises a third polarized light splitting prism R1, a fourth polarized light splitting prism R2, and a right mirror R3; the hypotenuse of the third polarized light splitting prism R1 is oppositely arranged with the hypotenuse of the fourth polarized light splitting prism R2 to form a right rectangular prism, which is arranged between the right relay lens 41 and the right lens 43; the hypotenuse of the third polarized light splitting prism R1 is fixedly connected with the hypotenuse of the fourth polarized light splitting prism R2 via a polarized light splitting film PBS1 to form a right light splitting surface of the right-polarized light splitting module 42; the fourth polarized light splitting prism R2 is attached with a phase delay film QWP1 on the side facing the right mirror R3 to form a phase delay surface of the right-polarized light splitting module 42; the right-pupil lens 45 is arranged on the side of the third polarized light splitting prism R1 away from the phase delay surface of the right-polarized light splitting module 42, and the side of the third polarized light splitting prism R1 away from the phase delay surface of the right-polarized light splitting module 42 forms a right light ray exit surface of the right-polarized light splitting module 42.

[0073] In the present embodiment, with reference to Figure 2 and Figure 5, the second polarized light P is transmitted through the polarized light splitting film PBS1 attached to the splitting mirror surface of the splitting component 20, and is reflected by the total reflection mirror surface of the splitting component 20 to the right reflecting surface of the reflecting prism 22, and is reflected by the right relay lens 41 after being reflected twice by the right reflecting surface of the reflecting prism 22, and is transmitted through the third polarized light splitting prism R1, the polarized light splitting film PBS1 and the fourth polarized light splitting prism R2, and is projected to the right lens 43, and is projected to the right modulation screen 44 after being converged by the right lens 43, and the second polarized light P is changed into the polarized image light (i.e. the first polarized light S carrying the projection light image of the light source) after being modulated by the right modulation screen 44, and is re-projected to the right lens 43, and is transmitted through the right lens 43, and is projected to the polarized light splitting film PBS1 after being transmitted through the fourth polarized light splitting prism R2, and is reflected by the polarized light splitting film PBS1, and the first polarized light S carrying the projection light image of the light source is turned to the phase delay film QWP1, so that the first polarized light S carrying the projection light image of the light source is phase delayed by 1 / 4 wavelength to reach the right reflecting mirror R3 surface, and is phase delayed by 1 / 4 wavelength again after being reflected by the right reflecting mirror R3 surface and re-passing the phase delay film QWP1, at this time, the first polarized light S carrying the projection light image of the light source is changed into the second polarized light P, and is projected to the right exit pupil lens 45 after being transmitted through the right splitting surface and the right exit light surface of the right polarized light splitting module 42 in sequence, and the second polarized light P converged by the right exit pupil lens 45 can be more accurately projected to the right coupling-in area 12 of the right waveguide sheet 101, so that unnecessary light loss is reduced to significantly enhance the clarity of light imaging; next, the projection light image carried by the second polarized light P is coupled out of the right waveguide sheet 101 through the right coupling-out area 14 to the right eye of the user.

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

[0075] Further, in some possible embodiments, the splitting component 20 includes a splitting prism 21, the splitting surface of the splitting prism 21 constitutes the splitting mirror surface of the splitting component 20 and is arranged towards the light source 10, the total reflection surface of the splitting prism 21 is arranged opposite to the splitting surface, the polarized light splitting film is attached to the splitting surface, and the total reflection surface is coated with a reflection enhancement film; the 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 splitting mirror surface, and to reflect the second polarized light P projected by the splitting mirror surface to the right reflecting surface of the splitting component 20 through the total reflection surface when the first polarized light S is projected to the left reflecting surface of the splitting component 20 through the splitting mirror surface.

[0076] In the present embodiment, the splitting component 20 is taken as an example for description. 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 is converged by a collimating lens 51 in the projection optical component 50, and then passes through a homogenizing lens 52 in the projection optical component 50, so that the converged 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. Thus, the non-polarized light projected by the projection optical component 50 can be separated into the first polarized light S and the second polarized light P perpendicular to each other by the polarized light splitting film PBS1 attached to the light splitting surface of the light splitting prism 21, i.e. the polarized 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.

[0077] 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 surface 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.

[0078] The polarized light splitting film PBS1 is a PBS (Polarizing Beam Splitter) film, i.e. when the non-polarized light is incident on the PBS film, the incident non-polarized light is separated into two perpendicular first polarized light S (i.e. S polarized light, also called S state polarized light) and second polarized light P (i.e. P polarized light, also called P state polarized light) by the PBS film, and the first polarized light S transmits through the PBS film, and the second polarized light P transmits through the PBS film.

[0079] Further, in other possible embodiments, referring to Figure 6 , Figure 6This is a schematic diagram of the beam-splitting prism according to the first embodiment of this application. The beam-splitting 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. The hypotenuse of the first triangular prism J1 constitutes the beam-splitting surface of the beam-splitting prism 21, and the hypotenuse of the second triangular prism J2 constitutes the total internal reflection surface of the beam-splitting prism 21.

[0080] In this embodiment, refer to Figure 6 (a) shows that the beam splitter prism 21 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 splitting 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 large-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.

[0081] Alternatively, a parallelogram prism can be used, with the side of the parallelogram prism facing the light source 10 forming the beam-splitting surface of the beam-splitting prism 21, and the side of the parallelogram prism away from the light source 10 forming the total internal reflection surface of the beam-splitting prism 21.

[0082] In the embodiment, the light splitting prism 21 is also a parallelogram prism, and the side of the parallelogram prism facing the light source 10 is used as the light splitting surface of the light splitting prism 21, so that the non-polarized light projected by the projection optical unit 50 can be accurately decomposed into the first polarized light S and the second polarized light P. That is, the single light source 10 is split by the polarized light splitting film PBS1 attached to the side of the parallelogram prism facing the light source 10, instead of the traditional double light machine module configuration, thereby effectively reducing the power consumption of the glasses module, reducing the dependence on large-capacity batteries, thereby reducing the weight of the glasses module, and 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 light splitting prism 21, so that the second polarized light P can be efficiently reflected to the right mirror surface of the light splitting assembly 20, thereby reducing the light loss in the light transmission process and significantly improving the imaging quality of the optical machine module 200.

[0083] Further, in some possible embodiments, the light splitting assembly further includes a reflecting prism 22, the reflecting prism 22 is arranged between the left polarized beam splitter 30 and the right polarized beam splitter 40, the left reflecting surface of the reflecting prism 22 constitutes the left reflecting mirror surface of the light splitting assembly 20 facing the light splitting mirror surface of the light splitting assembly 20, and the right reflecting surface of the reflecting prism 22 constitutes the right reflecting mirror surface of the light splitting assembly 20 facing the total reflection mirror surface of the light splitting assembly 20.

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

[0085] In the embodiment, referring to Figure 2 , the light splitting assembly 20 further includes the reflecting prism 22, the reflecting prism 22 is arranged above the light splitting prism 21 and between the left polarized beam splitter 30 and the right polarized beam splitter 40. Specifically, the left reflecting surface of the reflecting prism 22 constitutes the left reflecting mirror surface of the light splitting assembly 20 facing the 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 polarized beam splitter 30 arranged towards the left reflecting mirror surface; and the right reflecting surface of the reflecting prism 22 constitutes the right reflecting mirror surface of the light splitting assembly 20 facing the total reflection mirror surface of the light splitting assembly 20, so that the second polarized light P projected by the total reflection mirror surface can be accurately reflected to the right polarized beam splitter 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 polarized beam splitter 30 and the right polarized beam splitter 40, and the left / right reflecting surface of the reflecting prism 22 reflects the first / second polarized light to the left / right polarized beam splitter, which significantly optimizes the light transmission path and effectively improves the utilization rate and transmission efficiency of the first / second polarized light.

[0086] Further, in another possible implementation, referring to Figure 2 , the light engine module 200 further comprises a projection optical component 50, which is arranged between the light source 10 and the beam splitting component 20; the projection optical component 50 comprises a collimating lens 51, a homogenizing lens 52, and a relay lens 53, the homogenizing lens 52 is arranged between the collimating lens 51 and the relay lens 53, the collimating lens 51 is arranged towards the light source 10, and the relay lens 53 is arranged towards the beam splitting surface of the beam splitting component 20.

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

[0088] In another embodiment, referring to Figure 7 , the glasses module further comprises a glasses support 400, a glasses housing 300, and a nose pad 500, the glasses support 400 is provided with left and right light passing holes 401 and 402 for light passing, three nose pad fixing holes 405, a left hinge hole 406, a right hinge hole 47, and a field of view area for fixing the waveguide lens 100; for example, the waveguide lens 100 is arranged between the glasses support 400 and the glasses housing 300, and is fixed to the field of view area on the glasses support 400, and the light engine module 200 is arranged on the side of the waveguide lens 100 away from the glasses housing 300, the left light exit hole of the light engine module 200 is aligned with the left light passing hole 401 of the glasses support 400, the right light exit hole of the light engine module 200 is aligned with the right light passing hole 402 of the glasses support 400, the left exit pupil lens 35 of the left polarized beam splitting component 30 in the light engine module 200 is arranged towards the left light exit hole of the light engine module 200, and the right exit pupil lens 45 of the right polarized beam splitting component 40 in the light engine module 200 is arranged towards the right light exit hole of the light engine module 200; in addition, after the nose pad 500 positioning hole on the nose pad 500 is aligned with any one of the three nose pad fixing holes 405, the nose pad 500 is fixed to the glasses support 400 by the nose pad 500 fastener passing through the nose pad fixing hole 405 aligned with the nose pad 500 positioning hole; the left hinge hole 406 is arranged between and aligned with the two left fixing holes of the left temple 601, and the left temple 601 and the glasses support 400 are hingedly connected by the left temple pin 403; the right hinge hole 47 is arranged between and aligned with the two right fixing holes of the right temple 602, and the right temple 602 and the glasses support 400 are hingedly connected by the right temple pin 404.

[0089] In another embodiment, referring to Figure 8 ,Figure 8 is a schematic diagram of an optical engine module package according to the first embodiment of the present application. The optical engine module further comprises an optical engine housing 60, and the exemplary light source 10, the light splitting assembly 20, the left polarized beam splitting element 30, the right polarized beam splitting element 40 and the projection optical element 50 are arranged in the optical engine housing 60 as shown. Figure 6

[0090] In summary, 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 engine module 200, and a light splitting assembly 20 is packaged inside the optical engine module 200 to accurately split a single light source 10 arranged towards the light splitting assembly 20 into first polarized light S and second polarized light P, thereby replacing the configuration of a traditional double optical engine module and effectively reducing the energy consumption of the light source 10. Next, since the left polarized beam splitting element 30 and the right polarized beam splitting element 40 are arranged on the two sides of the light splitting assembly 20 respectively, when the first polarized light P is converted into the second polarized light S by the polarization conversion surface of the left polarized beam splitting element 30 and is guided to the left eye area of the waveguide lens 100 towards the left light output surface of the left polarized beam splitting element 30, the second polarized light S projected by the light splitting assembly 20 is projected to the right eye area of the waveguide lens 100 towards the right light output surface of the right polarized beam splitting element 40 through the right polarized beam splitting element 40, thereby realizing the visual display requirement of both eyes using only one light source 10. That is, the present application significantly reduces the power consumption of the glasses module by splitting the single light source 10 through the light splitting assembly 20, reduces the dependence on large-capacity batteries, and thereby reduces the overall weight of the glasses module, greatly improving the user's wearing experience.

[0091] In addition, to achieve the above-mentioned purpose, the present application also provides an extended reality device, which comprises the glasses module of any one of the above.

[0092] It should be noted that in this document, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or system. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or system that includes the element.

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

[0094] ​Those skilled in the art can clearly understand the above-mentioned embodiment method by means of software and the necessary general hardware platform, of course, it can also be through hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium such as a ROM / RAM, a magnetic disk, or an optical disc, and includes a plurality of instructions for making an extended reality device (which can be a mobile phone, a computer, a server, or a network device) execute the methods described in various embodiments of the present application.

[0095] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application 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 polarization beam splitting element and a right polarization beam splitting element, the light source is arranged towards the light splitting component, the light splitting component is arranged between the left polarization beam splitting element and the right polarization beam splitting element, a left light exit surface of the left polarization beam splitting element is arranged towards a left eye area of the waveguide lens, and a right light exit surface of the right polarization beam splitting element is arranged towards a right eye area of the waveguide lens; The light splitting component comprises a reflecting prism and a rhombic prism, the rhombic prism is formed by mutually bonding a right angle side of a first triangular prism and a right angle side of a second triangular prism, the hypotenuse of the first triangular prism is arranged opposite to the hypotenuse of the second triangular prism, the hypotenuse of the first triangular prism is a light splitting surface attached with a polarization light splitting film, the hypotenuse of the second triangular prism is a total reflection surface coated with a reflection enhancement film, and left and right reflecting surfaces of the reflecting prism are arranged towards the light splitting surface and the total reflection surface respectively; The light source is split into first and second polarized lights through the light splitting component, the first polarized light is converted into the second polarized light through a polarization conversion surface of the left polarization beam splitting element, and the second polarized light is projected to the left eye area towards the left light exit surface through the left polarization beam splitting element, and the second polarized light is projected to the right eye area towards the right light exit surface through the right polarization beam splitting element; wherein, The left polarization beam splitting element comprises a left relay lens, a left polarization light splitting module, a left lens and a left modulation screen, the left polarization light splitting module is provided with the left relay lens and the left lens on two sides respectively, the left relay lens is arranged towards a left reflecting surface of the light splitting component, the left lens is provided with the left modulation screen on a side away from the left polarization light splitting module, and a left light line exit surface of the left polarization light splitting module constitutes a left light exit surface of the left polarization beam splitting element arranged towards the left eye area of the waveguide lens; The left polarization light splitting module comprises a first polarization light splitting prism, a second polarization light splitting prism and a left reflecting mirror, the polarization conversion surface of the left polarization beam splitting element is formed by a phase delay film attached to one side of the second polarization light splitting prism towards the left reflecting mirror, the hypotenuse of the first polarization light splitting prism is arranged opposite to the hypotenuse of the second polarization light splitting prism to constitute a left rectangular prism arranged between the left relay lens and the left lens, the polarization light splitting film is fixedly connected between the hypotenuse of the first polarization light splitting prism and the hypotenuse of the second polarization light splitting prism, and a phase conversion film is attached to one side of the first polarization light splitting prism towards the left relay lens; The first polarized light is reflected by the left reflecting surface, sequentially passes through the left relay lens, the phase conversion film of the first polarization light splitting prism, the left lens and the left modulation screen to form polarized image light, and the polarized image light is the first polarized light carrying a projection light image of the light source; The polarized image light is projected to the left reflecting mirror again after passing through the left lens, the polarization light splitting film and the phase delay film of the second polarization light splitting prism, is reflected by the left reflecting mirror and passes through the phase delay film twice to complete polarization conversion.

2. The eyeglass module of claim 1, wherein, The left polarization beam splitting element further comprises a left exit pupil lens. The left pupil exit lens is arranged on the side of the first polarization beam splitting prism away from the polarization conversion surface, and the side of the first polarization beam splitting prism away from the polarization conversion surface constitutes a left light ray exit surface of the left polarization beam splitting module.

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 right polarization beam splitting member comprises a right relay lens, a right polarization beam splitting module, a right lens and a right modulation screen. The right polarization beam splitting module is provided with the right relay lens and the right lens on two sides thereof, the right relay lens is arranged towards the right mirror surface of the beam splitting assembly, the right lens is provided with the right modulation screen on the side thereof away from the right polarization beam splitting module, and a right light ray exit surface of the right polarization beam splitting module constitutes a right light exit surface of the right polarization beam splitting member arranged towards the right eye area of the waveguide lens. The second polarization light passes through the right relay lens, the right polarization beam splitting module and the right lens in sequence after passing through the right mirror surface, is projected to the right modulation screen, and is modulated into polarization image light by the right modulation screen, wherein the polarization image light is first polarization light carrying a projection light image of the light source. The polarization image light is projected to the right beam splitting surface of the right polarization beam splitting module through the right modulation screen and the right lens, is reflected to the phase delay surface of the right polarization beam splitting module through the right beam splitting surface, is twice phase delayed into the second polarization light, and is projected to the right eye area towards the right light ray exit surface through the right beam splitting surface.

4. The eyeglass module of claim 3, wherein the first and second lenses are configured to be positioned in front of the eyes of the user. The right polarization beam splitting member further comprises a right pupil exit lens, and the right polarization beam splitting module further comprises a third polarization beam splitting prism, a fourth polarization beam splitting prism and a right mirror. The hypotenuse of the third polarization beam splitting prism is arranged opposite to the hypotenuse of the fourth polarization beam splitting prism to constitute a right rectangular prism arranged between the right relay lens and the right lens. The hypotenuse of the third polarization beam splitting prism is arranged opposite to the hypotenuse of the fourth polarization beam splitting prism to constitute a right rectangular prism arranged between the right relay lens and the right lens. The hypotenuse of the third polarization beam splitting prism is fixedly connected with the hypotenuse of the fourth polarization beam splitting prism through a polarization beam splitting film to constitute a right beam splitting surface of the right polarization beam splitting module, and a phase delay film is attached to the side of the fourth polarization beam splitting prism towards the right mirror to constitute a phase delay surface of the right polarization beam splitting module.

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

6. The eyeglass module of claim 1, wherein the eyeglass module is configured to be worn on a head of a user. The beam splitting prism is configured to split the light source into first polarization light and second polarization light perpendicular to each other through the beam splitting surface, and when the first polarization light is projected to the left mirror surface of the beam splitting assembly through the beam splitting surface, the second polarization light projected by the beam splitting surface is reflected to the right mirror surface of the beam splitting assembly through the total reflection surface. The reflecting prism is arranged between the left polarization beam splitting member and the right polarization beam splitting member, a left mirror surface of the reflecting prism constitutes a left mirror surface of the beam splitting assembly towards the beam splitting surface, and a right mirror surface of the reflecting prism constitutes a right mirror surface of the beam splitting assembly towards the total reflection surface. The reflection prism is configured to project the second polarized light to the right polarization beam splitting component through the right reflection mirror surface when the first polarized light is projected to the left polarization beam splitting component through the left reflection mirror surface.

7. The eyeglass module of claim 1, wherein the eyeglass module is configured to be worn on a head of a user. The optical engine module further comprises a projection optical component, which is arranged between the light source and the light splitting component; The projection optical component comprises a collimating lens, a homogenizing lens and a relay lens, the homogenizing lens is respectively provided with the collimating lens and the relay lens on both sides, the collimating lens is arranged towards the light source, and the relay lens is arranged towards the light splitting surface.

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

Images