Eyeglasses

Abstract

One or more embodiments of this description relate to eyeglasses, comprising: lenses; a frame, the lenses being provided on the frame; a camera, fixed to the frame and configured to capture a picture of a target scene; a light source assembly, fixed to the frame; and a film, which records viewfinding frame information; wherein light beams emitted by the light source assembly irradiate the film to form a virtual viewfinding frame image in front of the lenses, the virtual viewfinding frame image is configured to define an actual scene, and the actual scene at least partially overlaps the target scene.

Description

A pair of glasses Cross-reference to related applications

[0001] This specification claims priority to Chinese application No. 202411305682.7, filed on September 14, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present specification relates to the technical field of electronic devices, and in particular to a pair of glasses. BACKGROUND

[0003] With the progress of smart electronic technology and the booming development of social networking sites and video sites, smart glasses capable of realizing first-person view photographing and video recording functions have begun to emerge and become increasingly popular. However, the smart glasses available for shooting lack the viewfinder function of shooting devices such as mobile phones and cameras, and users cannot view the pictures captured by the camera in real time, resulting in a large deviation between the obtained images and the user's expectations, low picture success rate, and affecting the user's experience. Based on this defect, some smart glasses increase an augmented reality (AR) display module, which can display a preview picture or generate a viewfinder frame line in real time. However, due to the industry maturity of AR technology itself, the smart glasses setting scheme has great challenges in cost, power consumption, and volume, and it is difficult to be applied on a large scale. SUMMARY

[0004] Embodiments of the present specification provide a pair of glasses, comprising: a lens; a support, the lens being arranged on the support; a camera fixed to the support and configured to capture a picture of a target scene; a light source assembly fixed to the support; a film, the film recording viewfinder frame information; wherein the light beam emitted by the light source assembly irradiates the film, and a viewfinder frame virtual image is formed in front of the lens, the viewfinder frame virtual image being configured to define an actual scene, the actual scene at least partially overlapping the target scene. BRIEF DESCRIPTION OF DRAWINGS

[0005] The present specification will be further described in the manner of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting, and in these embodiments, the same reference numbers represent the same structures, wherein:

[0006] FIG. 1 is an exemplary block diagram of a pair of glasses according to some embodiments of the present specification;

[0007] FIG. 2 is a schematic diagram of a pair of glasses according to some embodiments of the present specification;

[0008] FIGS. 3A-3F are schematic diagrams of viewfinder frame information according to some embodiments of the present specification;

[0009] FIG. 4A is a schematic illustration of a field of view of a user when wearing glasses, according to some embodiments of the present specification;

[0010] FIG. 4B is a schematic illustration of a field of view of a user when taking a picture through the glasses, according to some embodiments of the present specification;

[0011] FIG. 4C is a schematic illustration of a picture taken, according to some embodiments of the present specification;

[0012] FIG. 5 is a schematic illustration of recording on a holographic plate, according to some embodiments of the present specification;

[0013] FIG. 6 is a schematic illustration of yet another pair of glasses, according to some embodiments of the present specification;

[0014] FIG. 7 is a schematic illustration of a light source assembly, according to some embodiments of the present specification;

[0015] FIG. 8 is a schematic illustration of yet another pair of glasses, according to some embodiments of the present specification;

[0016] FIGS. 9A-9D are schematic illustrations of yet another pair of glasses, according to some embodiments of the present specification;

[0017] FIG. 10 is a schematic illustration of yet another pair of glasses, according to some embodiments of the present specification;

[0018] FIG. 11 is a schematic illustration of a pair of glasses provided with two sub-layers, according to some embodiments of the present specification;

[0019] FIG. 12 is a schematic illustration of yet another pair of glasses provided with two sub-layers, according to some embodiments of the present specification;

[0020] FIG. 13 is a schematic illustration of another pair of glasses provided with two sub-layers, according to some embodiments of the present specification;

[0021] FIG. 14 is a schematic illustration of yet another pair of glasses provided with two sub-layers, according to some embodiments of the present specification;

[0022] FIG. 15 is a schematic illustration of yet another pair of glasses, according to some embodiments of the present specification;

[0023] FIG. 16 is a schematic illustration of yet another pair of glasses, according to some embodiments of the present specification;

[0024] FIG. 17 is a schematic illustration of yet another pair of glasses, according to some embodiments of the present specification;

[0025] FIGS. 18A-18C are schematic illustrations of yet another pair of glasses, according to some embodiments of the present specification;

[0026] FIG. 19A is a schematic illustration of yet another pair of glasses, according to some embodiments of the present specification;

[0027] FIG. 19B is a schematic view of yet another eyewear shown in accordance with some embodiments of the present specification;

[0028] FIG. 20 is a schematic view of yet another eyewear shown in accordance with some embodiments of the present specification;

[0029] FIGS. 21A and 21B are schematic views of yet another eyewear shown in accordance with some embodiments of the present specification. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description are only some examples or embodiments of the present specification, and for those skilled in the art, the present specification can be applied to other similar scenarios without creative labor on the basis of these drawings. Unless it is clear from the language context or otherwise indicated, the same reference numbers in the drawings represent the same structure or operation.

[0031] It should be understood that the "system", "device", "unit" and / or "module" used herein is a method for distinguishing different components, elements, parts, sections or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0032] As shown in the specification and claims, unless the context clearly indicates otherwise, the words "one", "a", "an", and / or "the" do not mean to specify a single number, but also include a plurality. Generally speaking, the terms "comprise" and "include" only indicate that the steps and elements explicitly identified are included, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements.

[0033] Flowcharts are used in the present specification to illustrate the operations performed by the system according to the embodiments of the present specification. It should be understood that the preceding or subsequent operations are not necessarily performed in sequence. On the contrary, each step can be processed in reverse order or simultaneously. At the same time, other operations can be added to these processes, or one or more steps of the operation can be removed from these processes.

[0034] It should be noted that in the field of medicine, anatomy, etc., three basic sections of the human body, i.e., a sagittal plane, a coronal plane, and a horizontal plane, and three basic axes, i.e., a sagittal axis, a coronal axis, and a vertical axis, can be defined. The sagittal plane refers to a section perpendicular to the ground surface made along the front-to-back direction of the body (e.g., from the front of the chest to the back), which divides the human body into two parts, i.e., left and right. The coronal plane refers to a section perpendicular to the ground surface made along the left-to-right direction of the body (e.g., from the left shoulder to the right shoulder), which divides the human body into two parts, i.e., front and back. The horizontal plane refers to a section parallel to the ground surface made along the up-to-down direction of the body (e.g., from the top of the head to the bottom of the feet), which divides the human body into two parts, i.e., top and bottom. Correspondingly, the sagittal axis refers to an axis perpendicular to the coronal plane along the front-to-back direction of the body, the coronal axis refers to an axis perpendicular to the sagittal plane along the left-to-right direction of the body, and the vertical axis refers to an axis perpendicular to the horizontal plane along the up-to-down direction of the body. Hereinafter, the foregoing directions are described with reference.

[0035] FIG. 1 is an exemplary block diagram of glasses according to some embodiments of the present specification, and FIG. 2 is a schematic diagram of the glasses according to some embodiments of the present specification.

[0036] The glasses 100 are smart glasses with a photographing function. When a user (e.g., a wearer of the glasses 100) photographs through the glasses 100, a viewfinder virtual image with photographing information can be formed within the user's line of sight, thereby facilitating the user to understand the photographing range, object, etc., guaranteeing the photographing success rate, and improving the user experience.

[0037] In some embodiments, as shown in FIG. 1, the glasses 100 can include a lens 110, a support 120, a camera 130, a light source assembly 140, and a film 150.

[0038] The lens 110 can be used to refract light rays to achieve a specific function, such as focusing light rays, changing the direction of light rays, etc. Depending on the needs, the type of the lens 110 can be various, for example, the lens 110 can include a curved lens as shown in FIG. 7. For another example, the lens 110 can be a polarized lens, etc. In some embodiments, the lens 110 can also include a flat mirror as shown in FIG. 2.

[0039] As shown in FIG. 2, when the user wears the glasses 100, the lens 110 is located in front of the user's eyes, and the user can observe the external environment through the lens 110. One or two lenses 110 can be included in the glasses 100. When two lenses 110 are included in the glasses 100, the two lenses 110 can be respectively arranged in front of the user's left and right eyes.

[0040] The lens 110 can be made of one or more of glass, transparent resin, or other transparent materials, so that the user can observe the external environment through the lens 110 when wearing the glasses 100.

[0041] The support 120 is a structure in the glasses 100 that supports other components. As shown in FIG. 2, the support 120 can include a frame 121, temples 122, and a hinge 123. The frame 121 can be used to fix the lens 110. The frame 121 can be of various types. For example, the frame 121 can be a full frame, i.e., the lens 110 is surrounded by the frame 121 on all sides. For another example, the frame 121 can also be a half frame, i.e., part of the side of the lens 110 is surrounded by the frame 121. The temples 122 can connect the frame 121 to the user's ears to ensure the stability of the glasses 100 when worn. The hinge 123 can connect the temples 122 and the frame 121, so that the temples 122 can rotate around the rotation axis of the hinge 123, thereby achieving folding. The support 120 can also include other components. For example, as shown in FIG. 18A, the support 120 can also include a nose pad 124. More details about the arrangement of the support 120 can be found in the relevant description below.

[0042] In some embodiments, in addition to the support 120 shown in various embodiments of the present specification, the support 120 can also be arranged in other ways. For example, the support 120 can not include the frame 121, and the lens 110 can be fixed on the temples 122 directly through a connector (e.g., a screw). For another example, the support 120 can not include the hinge 123, and the temples 122 and the frame 121 are directly connected, and the temples 122 do not fold. In order to facilitate the description, the arrangement of the support 120 including the frame 121, the temples 122, and the hinge 123 will be described below. However, changes and modifications to the support 120 will not depart from the scope of the present specification.

[0043] The camera 130 is a component in the glasses 100 for shooting. For example, the camera 130 can be configured to shoot pictures of a target scene.

[0044] The camera 130 is fixed to the support 110. For example, the camera 130 shown in FIG. 2 can be fixed on the frame 121. For another example, the camera 130 can also be fixed on the temples 122. More details about the arrangement of the position of the camera 130 can be found in the relevant description below.

[0045] It can be understood that the camera 130 needs to shoot the external environment, so the camera 130 needs to face the external environment when it is fixed to the support 110.

[0046] FIGS. 3A-3F are schematic diagrams of viewfinder information according to some embodiments of the present specification.

[0047] In some embodiments, the film 150 records framing information. The framing information can be information related to a framing. For example, as shown in FIG. 3A and FIG. 3B, the framing information can include only a framing. For another example, as shown in FIG. 3C and FIG. 3D, the framing information can include, in addition to the framing, a center mark of the framing. For yet another example, as shown in FIG. 3E, the framing information can include, in addition to the framing, a recording mark "REC" indicating that recording is in progress. For still another example, as shown in FIG. 3F, the framing information can include, in addition to the framing, a grid mark assisting composition.

[0048] In some embodiments, the film 150 can be arranged to overlap the lens 110, so that the framing information recorded on the film 150 can be formed in front of the lens 110 in the field of view of the user.

[0049] In some embodiments, the camera 130 and the film 150 can be arranged on the same side or different sides of the glasses 100. More details about the above embodiments can be found in the relevant description below.

[0050] In some embodiments, only one film 150 is arranged on the glasses 100. For example, the glasses 100 include two lenses 110, and one of the two lenses 110 is arranged with the film 150. In some embodiments, two films 150 are arranged on the glasses 100. For example, the glasses 100 include two lenses 110, and each of the two lenses 110 is arranged with the film 150. More details about the glasses 100 arranged with two films 150 can be found in the relevant description below.

[0051] In some embodiments, as shown in FIG. 2, the film 150 can include a holographic plate 151 recording the framing information, and the holographic plate 151 can be arranged on the lens 110. More details about the holographic plate 151 can be found in the relevant description below.

[0052] In some embodiments, the film 150 can include a mask printed with the framing information. More details about the mask printed with the framing information can be found in the relevant description below.

[0053] The light source assembly 140 is a component in the glasses 100 for providing a light source. The light beam emitted by the light source assembly 140 is visible light to ensure that the viewfinder virtual image 200 formed is observable by the user with naked eyes. The wavelength of the visible light can be 400nm-780nm. For example, the light beam emitted by the light source assembly 140 includes green monochromatic light with a wavelength of about 500nm. For another example, the light beam emitted by the light source assembly 140 includes red monochromatic light with a wavelength of about 600nm. For yet another example, the light beam emitted by the light source assembly 140 can also be white light.

[0054] The light source assembly 140 can be fixed on the support 120. For example, as shown in FIG. 2, the light source assembly 140 can be fixed on the frame 121. For another example, as shown in FIG. 18B and FIG. 18C, the light source assembly 140 can also be fixed on the temple 122. More details about the position setting of the light source assembly 140 can be found in the relevant description below.

[0055] In some embodiments, the light beam emitted by the light source assembly 140 irradiates the film 150 and forms a viewfinder virtual image in front of the lens 110. The viewfinder virtual image can define an actual scene in the user's field of view, which at least partially overlaps with the target scene captured by the camera. The content of the viewfinder virtual image is consistent with the viewfinder information, for example, when the viewfinder information only includes the viewfinder, the viewfinder virtual image also only includes the viewfinder. For another example, when the viewfinder information includes the viewfinder and the viewfinder center mark, the viewfinder virtual image also includes the viewfinder and the viewfinder center mark.

[0056] In some embodiments, the light source assembly 140 and the film 150 are arranged on the same side of the glasses 100 to ensure that the light beam emitted by the light source assembly 140 irradiates the film 150. For example, the film 150 is arranged on the inner surface of the left lens, and the corresponding light source assembly 140 is arranged on the left frame. It is worth noting that there is an angle between the line connecting the irradiation direction of the light source assembly 140 and the film 150 and the coronal axis, so that the light beam emitted by the light source assembly 140 can irradiate the film 150 through the air.

[0057] In some embodiments, when the film sheet 150 comprises the holographic plate 151 recording the framing information, the light source assembly 140 can comprise a light source and an optical lens group, the light beam emitted by the light source is expanded by the optical lens group to form a reference light, the reference light interferes with the optical fringes of the holographic plate, thereby forming a framing virtual image in front of the lens 110 in the user's field of view. In some embodiments, the light source can comprise a monochromatic light source or a composite light source. Among them, the light beam of the monochromatic light source has a smaller wavelength range, which can better interfere with the interference fringes of the holographic plate. The light beam of the composite light source needs to be filtered before interfering with the interference fringes of the holographic plate. The composite light source can cooperate with multiple holographic plates, and after different filtering, the corresponding reference light is generated to interfere with the interference fringes of the corresponding holographic plate to generate the corresponding framing virtual image. In some embodiments, the optical lens group can comprise a lens group, and the light beam emitted by the light source is transmitted through the lens group to form a reference light after being expanded. In some embodiments, the optical lens group can comprise a mirror group, and the light beam emitted by the light source is reflected by the mirror group to form a reference light after being expanded. In some embodiments, the optical lens group can comprise a combination lens group of the lens group and the mirror group, and the combination lens group expands the light beam emitted by the light source to form a reference light. In some embodiments, when the light source is a composite light source, the optical lens group can further comprise a filter, and the filter can correspond to the holographic plate one by one. After the light beam emitted by the composite light source is filtered by the filter, the light of the sensitive wavelength corresponding to the holographic plate is obtained. In some embodiments, the filter wavelength range can be a range centered on the sensitive wavelength of the corresponding holographic plate with a deviation of no more than 10 nm. In some embodiments, the filtering step in the light beam processing step can be arranged before or after the expansion. For ease of understanding, the light source assembly 140 will be described below taking the light source as a laser light source and the optical lens group as a lens group.

[0058] In some embodiments, when the film sheet 150 comprises the mask printed with the framing information, the light beam emitted by the light source assembly 140 can pass through the mask and then propagate through the air to the lens, and the reflection and / or refraction of the light beam by the optical structure on the lens 110 form a framing virtual image in front of the lens 110 in the user's field of view, or the light beam emitted by the light source assembly 140 can pass through the mask and then propagate into the lens and reach the imaging area on the lens after being reflected in the lens, thereby forming a framing virtual image in front of the lens 110 in the user's field of view. For more information about the foregoing embodiments, please refer to the relevant description below.

[0059] It is worth mentioning that when the user takes a photo through the camera 130, the target scene photographed by the camera 130 is often not all the areas that can be observed by the user's field of view, but only part of the areas. Through the manner described by some embodiments of the present specification, the user can define the scene (i.e. the actual scene) consistent or close to the target scene photographed by the camera 130 in the user's field of view through the framing virtual image. At this time, when the user aligns the framing virtual image to the scene of interest, the photographed image obtained after the camera 130 takes a photo can basically correspond to the picture in the framing virtual image. If the picture in the current framing virtual image is not the content that the user actually wants to take a photo, the user can turn around and / or move the head to adjust the picture in the framing virtual image. Based on this setting, it can be ensured that the photographed image obtained by the camera 130 includes the content of interest of the user, so that the user can intuitively understand the target scene photographed by the camera 130, improve the shooting rate of the glasses 100, and improve the user experience. In addition, the framing virtual image can also assist the user to judge the working state of the glasses 100, that is, intuitively judge whether the camera 130 in the glasses 100 is in the working state, so as to better control the mode switching of the glasses 100, avoid the waste of power consumption caused by the misstart of the camera 130, and avoid the missing of wonderful pictures caused by the failure of the camera 130 to start.

[0060] FIG. 4A is a schematic diagram of the user's field of view when the user wears glasses according to some embodiments of the present specification, FIG. 4B is a schematic diagram of the user's field of view when the user takes a photo through the glasses according to some embodiments of the present specification, and FIG. 4C is a schematic diagram of a photographed image according to some embodiments of the present specification. In some embodiments, FIG. 4A is a schematic diagram of the user's field of view when the user wears the glasses 100. When the user takes a photo through the glasses 100, the framing virtual image is presented in the user's field of view shown in FIG. 4B. If the user wants to take a photo of the thatch umbrella and the beach chair in the middle, the user can align the framing virtual image to the thatch umbrella and the beach chair, and instruct the camera 130 to take a photo, and the photographed image as shown in FIG. 4C can be obtained.

[0061] In some embodiments, the angle between the central optical axis of the viewfinder virtual image 200 and the central optical axis of the camera 130 is 0-10°. For the sake of convenience, the central optical axis of the camera 130 is referred to as the first central optical axis, and the central optical axis of the viewfinder virtual image 200 is referred to as the second central optical axis hereinafter. The first central optical axis can be determined by the line connecting the center of the lens in the camera 130 and the focus point of the camera 130. The second central optical axis can be determined in various ways. For example, the second central optical axis can be determined based on the line connecting the center points of two viewfinder virtual images 200, which are at different distances from the lens 100. For another example, in the wearing state, the second central optical axis can be determined based on the line connecting the center point of the viewfinder virtual image 200 and the position of the pupil of the user. In some embodiments, the angle between the second central optical axis and the first central optical axis is 0-5°. In some embodiments, the angle between the second central optical axis and the first central optical axis is 0-2°. For example, the first central optical axis A and the second central optical axis B shown in FIG. 2 are parallel, i.e., the angle between them is 0°.

[0062] Keeping the second central optical axis parallel to the first central optical axis or only having a small angular deviation therebetween can improve the consistency between the direction in which the viewfinder virtual image 200 is located in the field of view of the user and the direction in which the camera 130 is aimed, so that the picture in the viewfinder virtual image 200 can more accurately reflect the picture captured by the camera 130, thereby ensuring that the picture in the viewfinder virtual image 200 is included in the captured image obtained after the camera 130 is aimed.

[0063] In some embodiments, the second central optical axis can also be measured in the following manner: in the wearing state, the position of the pupil of the user relative to the lens 110 is determined. In the non-wearing state, a test camera is placed at a position corresponding to the pupil of the user, and a test object is photographed. The test object is provided with a first mark point, and the lens of the test camera is marked with a second mark point corresponding to the central optical axis of the test camera. The field of view of the test camera includes the first mark point, the second mark point, and the center point of the viewfinder virtual image. When the aforementioned three points in the field of view of the test camera coincide, the line connecting the first mark point and the second mark point is the second central optical axis.

[0064] In some embodiments, the field of view angle of the framing virtual image 200 is less than or equal to the field of view angle of the camera 130. Here, the field of view angle of the framing virtual image 200 is the angle of the spatial range corresponding to the framing virtual image 200, and the field of view angle of the camera 130 is the angle of the spatial range corresponding to the captured image. The field of view angle can include a horizontal field of view angle and a vertical field of view angle. Correspondingly, the horizontal field of view angle of the framing virtual image 200 is less than or equal to the horizontal field of view angle of the camera 130, for example, as shown in FIG. 2, the field of view angle HFOV2 of the framing virtual image 200 is less than or equal to the field of view angle HFOV1 of the camera 130. Similarly, the vertical field of view angle of the framing virtual image 200 is less than or equal to the vertical field of view angle of the camera 130.

[0065] When the field of view angle of the framing virtual image 200 is equal to the field of view angle of the camera 130, and the first central optical axis A is parallel to the second central optical axis B, the captured image obtained after the camera 130 captures is completely consistent with the picture within the framing virtual image, so as to ensure that the picture within the framing virtual image 200 can be completely included in the captured image obtained after the camera 130 captures.

[0066] When the field of view angle of the framing virtual image 200 is less than the field of view angle of the camera 130, the picture of the captured image obtained after the camera 130 captures exceeds the picture within the framing virtual image. For example, the picture of the captured image shown in FIG. 4C exceeds the picture within the framing virtual image shown in FIG. 4B. Through this setting, the captured image can be adjusted later, the flexibility of cropping the captured image is improved, and at the same time, the captured image can be adapted to display screens with different aspect ratios, so as to ensure that even after adjusting the aspect ratio of the picture, the content interested by the user will not be missing.

[0067] Hereinafter, an implementation of forming the framing virtual image 200 in front of the lens 110 will be described.

[0068] In some embodiments, the diaphragm 150 can include a holographic plate 151 on which framing information is recorded, a light beam irradiates the holographic plate 151, and the framing virtual image 200 is formed in front of the lens 110. The framing information on the holographic plate 151 can be recorded on the holographic plate 151 when the glasses 100 are produced.

[0069] Figure 5 is a schematic diagram of recording a holographic plate according to some embodiments of the present specification. In some embodiments, the way of recording the framing information on the holographic plate 151 is by means of an initial laser 510, a beam splitter prism 520, a spatial light filter 530, an initial lens 540, a mirror 550, a mask 560, and an initial holographic plate 570, a collimating lens 580. As shown in Figure 5, the laser emitted by the initial laser 510 can be split into two beams by the beam splitter prism 520. One of the beams can pass through the spatial light filter 530 and the mask 560, and then pass through the initial lens 540 to illuminate the initial holographic plate 570. This beam can be referred to as the object light. The mask 560 is provided with the framing information, and the object light can transfer the framing information on the mask 560 to the initial holographic plate 570 during transmission. The other beam can pass through the spatial light filter 530 and the collimating lens 580, and after one or more reflections by the mirror 550, it can illuminate the initial holographic plate 570 at an angle. This beam can be referred to as the reference light. The reference light and the object light can emit interference fringes on the surface of the initial holographic plate 570, and the interference fringes record the phase difference between the object light and the reference light, so that the interference fringes can be recorded by the photosensitive material on the surface of the initial holographic plate 570. Since the framing information on the mask 560 is illuminated on the initial holographic plate 570, the interference fringes include the framing information, so that the framing information is recorded by the photosensitive material on the surface of the initial holographic plate 570. The aforementioned initial holographic plate 570 recording the framing information can be provided in the glasses 100, i.e., the holographic plate 151. In some embodiments, the framing information can also be recorded on the holographic plate 151 by nanoimprinting or laser etching, etc.

[0070] Correspondingly, when it is necessary to form the framing virtual image 200 corresponding to the framing information, a light beam (i.e., the reference light) can be generated by the light source assembly 140, and the reference light can illuminate the surface of the holographic plate 151 at an angle. At this time, the holographic plate 151 will form a holographic virtual image identical to the original object light under the action of the reference light, i.e., the framing virtual image 200, and display in front of the lens 110. It is worth noting that since the user displays through the glasses 100 by illuminating the interference fringes recorded by the holographic plate 151 with the reference light, the incident angle of the reference light illuminating the holographic plate 151 needs to be consistent with the incident angle when recording the framing information, so as to avoid the angle of the reference light illuminating the interference fringes recorded by the holographic plate 151 being inconsistent with the angle when recording the framing information, and the object light cannot be completely restored, so that the framing virtual image 200 is deformed or deviated in angle. For more information about the reference light generated by the light source assembly 140, please refer to the relevant description hereinafter in the present specification.

[0071] FIG. 6 is a schematic diagram of yet another pair of glasses, according to some embodiments of the present specification. In some embodiments, the holographic plate 151 is optionally disposed on each surface of the lens 110. For example, as shown in FIG. 2, the holographic plate 151 can be disposed on the inner surface of the lens 110. For another example, as shown in FIG. 6, the holographic plate 151 can be disposed on the outer surface of the lens 110. For yet another example, when the lens 110 comprises a multi-layer structure, the holographic plate 151 can be located within the multi-layer structure. The surface of the holographic plate 151 can be provided with a photosensitive material, which can be made of one or more of photopolymer, silver halide emulsion, DCG gelatin (dichromated gelatin), photopolymer dispersed liquid crystal, polarization volume holographic liquid crystal, etc.

[0072] In some embodiments, as shown in FIG. 2, the light source of the light source assembly 140 comprises a laser light source 141, and the optical lens assembly of the light source assembly 140 comprises a lens 142. The laser light source 141 and the lens 142 can be disposed on the side edge of the glasses 100. The side edge of the glasses 100 can comprise the temple 122, or the portion of the frame 121 extending to the side edge.

[0073] The laser light source 141 can generate laser light, which can propagate onto the lens 142. The lens 142 can expand the laser light generated by the laser light source 141 to form the reference light 143. The reference light 143 is consistent with the original reference light when recording the frame information on the holographic plate 151, wherein the original reference light is the reference light that interferes with the object light when recording the frame information on the holographic plate 151. In some embodiments, the lens 142 can be a concave lens or a combination of multiple different types of lenses to adjust the propagation path of the reference light 143, so that the reference light 143 can irradiate the holographic plate 151.

[0074] When the reference light 143 irradiates the holographic plate 151, the reference light 143 can interfere with the optical fringes of the holographic plate 151 and generate a holographic virtual image consistent with the original object light. The holographic virtual image can be reflected by the lens 110 and then enter the user's eye, so as to form a frame virtual image in front of the lens 110 in the user's field of view.

[0075] The embodiments of the present specification can expand the laser light generated by the laser light source 141 through the lens 142, which can increase the size of the light spot area 144 of the reference light 143 irradiating the holographic plate 151, thereby increasing the size of the eye box of the holographic image, avoiding the user from missing or even failing to see the frame image due to the mismatch of the interpupillary distance or the movement of the eyeball, and improving the user experience. The eye box refers to the position area of the user's eye in which the user can see the complete frame virtual image. When the user's eye is located in the eye box, the user's eye can see the complete frame virtual image.

[0076] In some embodiments, the area of the light spot area 144 formed by the reference light 143 on the diaphragm 150 is 1 cm 2 -9 cm 2 In some embodiments, the area of the light spot area 144 formed by the reference light 143 on the diaphragm 150 is 1.5 cm 2 -4 cm 2 In some embodiments, the area of the light spot area 144 formed by the reference light 143 on the diaphragm 150 is 2 cm 2 -4 cm 2 .

[0077] By limiting the size of the light spot area 144, it can be avoided that the light spot area 144 is too small to cause the corresponding viewfinder virtual image to disappear in the user's field of view after the user moves the eyeball. At the same time, it can also be avoided that the light spot area 144 is too large, the energy of the reference light 143 is too dispersed, the light energy irradiating the interference fringes is small, the viewfinder virtual image 200 is imaged fuzzy, the brightness is low, and the contrast with the surrounding environment is low, etc. The user can hardly determine the specific position of the viewfinder virtual image 200 in the field of view.

[0078] In some embodiments, the horizontal distance X from the center of the light spot area 144 formed by the reference light 143 on the diaphragm 150 to the laser light source 141 is 2-6 cm. In some embodiments, the horizontal distance X from the center of the light spot area 144 formed by the reference light 143 on the diaphragm 150 to the laser light source 141 is 2-5 cm. In some embodiments, the horizontal distance X from the center of the light spot area 144 formed by the reference light 143 on the diaphragm 150 to the laser light source 141 is 2-4 cm. The horizontal distance X is the distance between the center of the light spot area 144 and the laser light source 141 in the coronal axis direction in the wearing state.

[0079] By limiting the horizontal distance X from the center of the light spot area 144 to the laser light source 141, it can be ensured that the light spot area 144 is located in front of the user's eyes, so as to ensure that the corresponding viewfinder virtual image of the light spot area 144 is located in the central region of the user's field of view, which is convenient for the user to observe. In addition, it can also be avoided that the horizontal distance X is too large, causing part or all of the reference light 143 emitted by the light source assembly 140 to be blocked by the user's face, affecting the imaging of the viewfinder virtual image 200.

[0080] In some embodiments, the vertical distance Y from the center of the light spot area 144 formed by the reference light 143 on the film 150 to the laser light source 141 is 0.1 cm to 3 cm. In some embodiments, the vertical distance Y from the center of the light spot area 144 formed by the reference light 143 on the film 150 to the laser light source 141 is 0.5 cm to 2 cm. In some embodiments, the vertical distance Y from the center of the light spot area 144 formed by the reference light 143 on the film 150 to the laser light source 141 is 1 cm to 1.5 cm. The vertical distance Y is the distance between the center of the light spot area 144 in the wearing state and the laser light source 141 in the sagittal axis direction.

[0081] By limiting the vertical distance Y from the center of the light spot area 144 to the laser light source 141, the reference light 143 can be irradiated on the film 150 at a proper inclination angle, so as to form a light spot area 144 with a certain area on the film 150. If the vertical distance Y is too small, the reference light 143 cannot form a light spot area 144 with a proper area on the film 150; if the vertical distance Y is too large, the face of the user can block the propagation path of the reference light 143, so that the reference light 143 cannot be irradiated on the film 150 or the reference light 143 cannot be completely irradiated on the film 150.

[0082] In some embodiments, the reference light 143 can propagate through the air to irradiate on the holographic plate 151, so as to generate the light spot area 144 and further present the viewfinder virtual image 200 in front of the lens 110. By the foregoing arrangement, the design difficulty of the glasses 100 can be reduced and the production cost can be lowered on the basis of ensuring that the glasses 100 can display the viewfinder virtual image 200 in the field of view of the user.

[0083] FIG. 7 is a schematic diagram of a light source assembly according to some embodiments of the present specification. As shown in FIG. 7, in some embodiments, the light source assembly 140 further comprises a housing 145, and a light source (e.g., the laser light source 141) is arranged in the housing 145. The housing 145 is provided with an opening 146, and an optical lens group (e.g., the lens 142) is mounted at the opening 146. The light beam emitted by the light source (e.g., the laser light source 141) is emitted out of the housing 145 through the opening 146, expanded by the optical lens group (e.g., the lens 142) to form the reference light 143, and the reference light 143 is irradiated on the film 150 (e.g., the holographic plate 151) to form the light spot area 144; or the light beam emitted by the light source (e.g., the laser light source 141) is expanded by the optical lens group (e.g., the lens 142) to form the reference light 143, and the reference light 143 is emitted out of the housing 145 through the opening 146 and irradiated on the film 150 (e.g., the holographic plate 151) to form the light spot area 144.

[0084] In some embodiments, the shape of the light spot area 144 corresponds to the shape of the opening 146. For example, when the shape of the opening 146 is oval, the shape of the light spot area 144 corresponds to oval. For another example, when the shape of the opening 146 is rectangular, the shape of the light spot area 144 corresponds to rectangular. For yet another example, when the shape of the opening 146 is trapezoidal, the shape of the light spot area 144 corresponds to trapezoidal. In some embodiments, the shape of the light spot area 144 can be designed by selecting different shapes of the opening 146, so as to adjust the size of the light spot area 144.

[0085] In some embodiments, when the light source is the laser light source 141, the laser light source 141 has a fast axis L1 and a slow axis L2. In some embodiments, the fast axis L1 is a direction perpendicular to the front surface of the chip of the laser light source 141, and the slow axis L2 is a direction parallel to the front surface of the chip of the laser light source 141. Wherein, the front surface of the chip of the laser light source 141 refers to the side surface with the largest area among the side surfaces of the chip. As shown in FIG. 7, when the lens 142 is a plane lens, the reference light 143 obtained after the light beam emitted by the laser light source 141 passes through the lens 142 is not expanded, and when the opening 146 is not considered, the light spot area 144 formed by the reference light 143 is in the shape of an ellipse, and the ellipse-shaped light spot area 144 has a long axis and a short axis, the direction of the long axis corresponds to the fast axis L1, and the direction of the short axis corresponds to the slow axis L2.

[0086] In some embodiments, the first divergence angle θ1 of the fast axis L1 of the laser light source 141 is greater than the second divergence angle θ2 of the slow axis L2, that is, the light beam emitted by the laser light source 141 diverges faster and wider in the direction of the fast axis L1 (for example, a first direction M direction parallel to the fast axis L1), so that the light spot area formed by the light beam emitted by the laser light source 141 presents a long strip shape or a long strip shape, and the position and angle of the light spot area 144 are determined according to the directions of the fast axis L1 and the slow axis L2, so that the light spot area 144 presents different degrees of occlusion in different directions in front of the user's line of sight, which is beneficial to more flexible optimization of the interference between the light spot area 144 and the normal field of view.

[0087] In some embodiments, in order to ensure that the area of the light spot area 144 on the lens 110 irradiated by the light beam emitted by the laser light source 141 is large enough to meet the imaging requirements, the direction of the fast axis L1 of the laser light source 141 (i.e. the M direction) can be parallel or approximately parallel to the height direction of the lens 110. That is, in the wearing state, the direction of the fast axis L1 (i.e. the M direction) is parallel or approximately parallel to the vertical axis of the user's body.

[0088] In some embodiments, the laser light source 141 and the profile of the elliptical light spot region 144 form a cone with an elliptical base, the long axis (fast axis L1) of the elliptical light spot region 144 corresponds to two ends of the long axis (fast axis L1) on the cone, and the two ends correspond to the generatrix of the cone. The angle between the two lines LA1 and LA2 is the first divergence angle θ1. The short axis (slow axis L2) of the elliptical light spot region 144 corresponds to two ends of the short axis (slow axis L2) on the cone, and the two ends correspond to the generatrix of the cone. The angle between the two lines LB1 and LB2 is the second divergence angle θ2.

[0089] The first divergence angle θ1 of the fast axis L1 can affect the size of the light spot region 144 formed by the light beam emitted by the laser light source 141 in the direction of the fast axis L1 (for example, the first direction M direction parallel to the fast axis L1). The second divergence angle θ2 of the slow axis L2 can affect the size of the light spot region 144 formed by the light beam emitted by the laser light source 141 in the direction of the slow axis L2 (for example, the second direction N direction parallel to the slow axis L2). The larger the divergence angle, the larger the size of the light spot region 144 in the corresponding direction; the smaller the divergence angle, the smaller the size of the light spot region 144 in the corresponding direction. In some embodiments, in order to make the size of the light spot region 144 formed by the light beam emitted by the laser light source 141 appropriate, the first divergence angle θ1 can be 20°-70°, and the second divergence angle θ2 can be 6°-25°. In some embodiments, in order to further make the size of the light spot region 144 formed by the light beam emitted by the laser light source 141 appropriate, the first divergence angle θ1 can be 30°-60°, and the second divergence angle θ2 can be 10°-20°.

[0090] In some embodiments, when the lens 142 is a beam expander, the light emitted by the laser light source 141 will pass through the beam expander to form the reference light 143. The first divergence angle of the light spot region 144 formed by the reference light 143 in the direction of the fast axis L1 (the first direction M direction) can be determined according to the first angular divergence coefficient m of the beam expander in the direction of the fast axis L1 (the first direction M direction) and the first divergence angle θ1. For example, the first divergence angle is m*θ1. The second divergence angle of the light spot region 144 formed by the reference light 143 in the direction of the slow axis L2 (the second direction N direction) can be determined according to the second angular divergence coefficient n of the beam expander in the direction of the slow axis L2 (the second direction N direction) and the second divergence angle θ2. For example, the second divergence angle is n*θ2.

[0091] The first divergence angle m*0i can affect the size of the light spot area 144 formed by the reference light 143 in the direction of the fast axis L1 (e.g., the first direction M direction), and the second divergence angle n*0i can affect the size of the light spot area 144 formed by the reference light 143 in the direction of the slow axis L2 (e.g., the second direction N direction). The larger the divergence angle, the larger the size of the light spot area 144 in the corresponding direction; the smaller the divergence angle, the smaller the size of the light spot area 144 in the corresponding direction. In some embodiments, in order to make the size of the light spot area 144 formed by the light beam emitted by the laser light source 141 appropriate, the first divergence angle m*0i can be greater than 20°, and the second divergence angle 0i can be greater than 10°, that is, the first angular expansion factor m and the second angular expansion factor n are greater than 1.

[0092] FIG. 8 is a schematic diagram of another pair of glasses according to some embodiments of the present specification. In FIG. 8, the lens 110 is a curved lens, and the holographic plate 151 is also a corresponding curved shape. In some embodiments, as shown in FIG. 2 and FIG. 8, the reference light 143 can be transmitted through the air to irradiate on the holographic plate 151, thereby generating the light spot area 144.

[0093] FIGS. 9A-9D are schematic diagrams of another pair of glasses according to some embodiments of the present specification. In FIGS. 9A and 9D, the lens 110 is a flat mirror, and the holographic plate 151 is a corresponding flat shape; in FIG. 9B, the lens 110 is a curved lens, and the holographic plate 151 is a corresponding curved shape; in FIG. 9C, the lens 110 includes a curved lens, and the holographic plate 151 is a flat shape. In order to improve the projection quality of the viewfinder frame 220, the lens 110 can also include a flat mirror, and the holographic plate 151 is connected to the flat mirror. The two ends of the flat mirror are connected to the two ends of the curved lens. There is a gap between the flat mirror and the curved lens.

[0094] In some embodiments, the reference light 143 can be reflected in the lens 110 and then irradiate on the holographic plate 151, thereby generating the light spot area 144 and further presenting the viewfinder frame virtual image 200 in front of the lens 110. As shown in FIGS. 9A-9D, the reference light 143 emitted by the light source assembly 140 can irradiate on the lens 110 and then be transmitted to the area where the lens 110 and the holographic plate 151 overlap after multiple reflections in the lens 110, thereby irradiating on the holographic plate 151. Through the foregoing arrangement, the controllability of the propagation of the reference light 143 can be improved, the projection quality of the viewfinder frame virtual image 200 can be improved, and problems such as reflection, light leakage, and obstruction can be avoided. In addition, the overall size of the glasses 100 can also be reduced.

[0095] The propagation direction of the reference light 143 in the lens 110 can be pre-set to ensure that the reference light 143 can finally irradiate on the holographic plate 151. For example, in order to ensure that the reference light 143 can effectively propagate to the holographic plate 151, it is necessary to ensure that the propagation of the reference light 143 in the lens 110 satisfies the total reflection condition.

[0096] In some embodiments, the lens 110 can be provided with a grating, which is configured to adjust the propagation direction of the reference light 143 in the lens 110 to ensure that the reference light 143 can finally irradiate on the holographic plate 151. For example, by setting the grating, the propagation direction of the reference light 143 in the lens 110 can be controlled to satisfy the total reflection condition.

[0097] For example, as shown in FIGS. 9A and 9B, the grating can be a reflective grating 111. The reflective grating 111 can be arranged on the side of the lens 110 away from the user's eye, and the reference light 143 emitted by the light source assembly 140 can first irradiate on the reflective grating 111 through the lens 110, and then the reflective grating 111 adjusts the propagation direction of the reference light 143 and reflects it to the lens 110, so that the reference light 143 can irradiate on the holographic plate 151 after multiple reflections in the lens 110.

[0098] For another example, as shown in FIG. 9C, the glasses 100 can include two lenses 110, wherein the lens 110 close to the user's eye is a flat lens, and the lens 110 away from the user's eye is a curved lens. The holographic plate 151 is arranged on the inner side surface of the flat lens, and the reflective grating 111 can be arranged between the flat lens and the curved lens. The reference light 143 emitted by the light source assembly 140 can first irradiate on the reflective grating 111 through the flat lens, and then the reflective grating 111 adjusts the propagation direction of the reference light 143 and reflects it to the flat lens, so that the reference light 143 can irradiate on the holographic plate 151 after multiple reflections in the flat lens.

[0099] For another example, as shown in FIG. 9D, the grating can be a transmissive grating 112. The transmissive grating 112 can be arranged on the side of the lens 110 close to the user's eye, and the reference light 143 emitted by the light source assembly 140 can first irradiate on the transmissive grating 112, and then the transmissive grating 112 adjusts the propagation direction of the reference light 143 and propagates it to the lens 110, so that the reference light 143 can irradiate on the holographic plate 151 after multiple reflections in the lens 110.

[0100] In some embodiments, the holographic plate 151 includes a plurality of sub-layers, each of which records different framing information, and different sub-layers are configured to interfere with reference light 143 of different wavelengths to project corresponding framing virtual image 200. The plurality of sub-layers can be arranged in an overlapping manner, and when the reference light 143 of a specific wavelength is incident on the corresponding sub-layer, it can interfere with the interference fringes on the sub-layer to form the framing virtual image 200 corresponding to the sub-layer.

[0101] FIG. 10 is a schematic diagram of another pair of glasses according to some embodiments of the present specification. As shown in FIG. 10, in some embodiments, the lens 110 can include a first sub-lens 110-1 and a second sub-lens 110-2, and the holographic plate 151 is arranged in the gap 110-3 between the first sub-lens 110-1 and the second sub-lens 110-2. The first sub-lens 110-1 is located on the side of the holographic plate 151 away from the user's eye, and the second sub-lens 110-2 is located on the side of the holographic plate 151 close to the user's eye. The reference light 143 emitted by the light source assembly 140 can first be incident on the second sub-lens 110-2 and then be incident on the holographic plate 151 after refraction by the second sub-lens 110-2.

[0102] In some embodiments, in order to avoid the first sub-lens 110-1 affecting the user's field of view, the first sub-lens 110-1 can be a transparent lens, and the transmittance of the first sub-lens 110-1 can be greater than 80%. In some embodiments, in order to further ensure the user's field of view, the transmittance of the first sub-lens 110-1 can be greater than 90%.

[0103] In some embodiments, the second sub-lens 110-2 can be selected according to actual different needs. For example, in order to avoid the second sub-lens 110-2 affecting the user's field of view, the second sub-lens 110-2 can also be a transparent lens, and the transmittance of the second sub-lens 110-2 can be greater than 80%. For another example, the second sub-lens 110-2 can also be a deflection lens to exclude and filter the direct light incident on the second sub-lens 110-2, so that the reference light 143 is incident on the holographic plate 151 to form a clear framing virtual image in the user's field of view, making the field of view clear and natural. For another example, in order to protect the user's eyes, the second sub-lens 110-2 can be a colored lens, which can filter out light of a corresponding color to protect the user's eyes. For another example, when the user's eyes are myopic or hyperopic, the second sub-lens 110-2 can be a refractive lens, which can adjust the propagation path of light to enable the user to see a clear image.

[0104] In some embodiments, the first sub-lens 110-1 and the second sub-lens 110-2 are parallel to each other, such that a gap 110-3 is formed between the first sub-lens 110-1 and the second sub-lens 110-2 to provide a space for the holographic master plate 151. In some embodiments, the first sub-lens 110-1 and the second sub-lens 110-2 can both be curved lenses, and correspondingly, the holographic master plate 151 is also curved. In other embodiments, the first sub-lens 110-1 and the second sub-lens 110-2 can both be flat lenses, and correspondingly, the holographic master plate 151 is also flat.

[0105] In some embodiments, the holographic master plate 151 can be disposed on the side of the first sub-lens 110-1 facing the gap 110-3, or on the side of the second sub-lens 110-2 facing the gap 110-3.

[0106] In some embodiments, in order to simplify the assembly steps and reduce the difficulty of assembly, the gap 110-3 can be filled with air. In some embodiments, in order to protect the holographic master plate 151, the gap 110-3 can be filled with dry inert gas, such as nitrogen.

[0107] In order to provide sufficient space for the holographic master plate 151 and avoid the first sub-lens 110-1 and the second sub-lens 110-2 scratching or interfering with the holographic master plate 151, the thickness of the gap 110-3 should not be too small. On the other hand, in order to avoid the lens 110 being too large in size and affecting the wearing comfort of the glasses 100, the thickness of the gap 110-3 should not be too large. Taking into account the above two aspects, the thickness of the gap 110-3 can be 10-300um. In some embodiments, in order to further avoid the first sub-lens 110-1 and the second sub-lens 110-2 scratching or interfering with the holographic master plate 151, while avoiding the lens 110 being too large in size, the thickness of the gap 110-3 can be 50-100um.

[0108] FIG. 11 is a schematic diagram of a pair of glasses provided with two sub-layers according to some embodiments of the present specification, and FIG. 12 is another schematic diagram of a pair of glasses provided with two sub-layers according to some embodiments of the present specification. By way of example only, as shown in FIG. 11, a holographic plate 151 on a pair of glasses 100 can include a first sub-layer 1511 and a second sub-layer 1512, which record different framing information. As shown in FIG. 11, when the light source assembly 140 emits a first reference light 1431, the first reference light 1431 will be incident on the first sub-layer 1511 and interfere with the first sub-layer 1511 to project a corresponding first framing virtual image 210. As shown in FIG. 12, when the light source assembly 140 emits a second reference light 1432, the second reference light 1432 will be incident on the second sub-layer 1512 and interfere with the second sub-layer 1512 to project a corresponding second framing virtual image 220. The wavelength of the first reference light 1431 is different from the wavelength of the second reference light 1432, and the first framing virtual image 210 is different from the second framing virtual image 220.

[0109] FIG. 13 is a schematic diagram of another pair of glasses provided with two sub-layers according to some embodiments of the present specification. In some embodiments, the plurality of sub-layers can be located on the same side of the lens 110, or can be located on different sides of the lens 110, respectively. For example, as shown in FIG. 11, the first sub-layer 1511 and the second sub-layer 1512 are located on the inner side surface and the outer side surface of the lens 110, respectively. For another example, as shown in FIG. 13, a third sub-layer 1513 is located on the inner side surface of the lens 110, and a fourth sub-layer 1514 is located on the inner side surface of the third sub-layer 1513.

[0110] In some embodiments, the framing virtual image 200 corresponding to different sub-layers can be different to provide different shooting prompts. For example, a holographic plate 151 can include three sub-layers, and the framing virtual image 200 corresponding to the three sub-layers can be any three of FIGS. 3A-3F, respectively. The reference light corresponding to the three sub-layers can be different (for example, can be red, green, and blue monochromatic light, respectively).

[0111] In some embodiments, the color of the framing virtual image 200 corresponding to different sub-layers can be different to adapt to different shooting scenes. For example, when shooting in a low-luminance environment, a sub-layer corresponding to a bright color (for example, green) framing virtual image 200 can be selected for projection. The color of the framing virtual image 200 of different sub-layers can correspond to the color of the corresponding reference light. For example, when the reference light corresponding to a sub-layer is green, the color of the framing virtual image 200 formed by the sub-layer is also green.

[0112] In some embodiments, the positions of the viewfinder virtual images 200 corresponding to different sub-layers can be different to adapt to different shooting requirements. For example, a certain holographic plate 151 can include 5 sub-layers, and the viewfinder virtual images 200 corresponding to the 5 sub-layers are located at the four corners and the center of the user's field of view, respectively. When the position of the picture of interest in the user's field of view is different, the viewfinder information at different positions can be selected. Correspondingly, a plurality of cameras 130 with different central optical axis angles can be arranged on the glasses 100. In some embodiments, based on the viewfinder virtual images 200 at different positions corresponding to different sub-layers on the holographic plate 151, the cameras 130 corresponding to the central optical axis angles can be adjusted to shoot to ensure that the shooting pictures obtained by the cameras 130 are synchronized with the pictures in the corresponding viewfinder virtual images 200. In some embodiments, when shooting by the cameras 130 with different central optical axis angles, the viewfinder virtual images 200 of the corresponding sub-layers in the holographic plate 151 can be adjusted to ensure that the shooting pictures obtained by the cameras 130 are synchronized with the pictures in the corresponding viewfinder virtual images 200.

[0113] In some embodiments, the shapes of the viewfinder virtual images 200 corresponding to different sub-layers can be different to adapt to different shooting requirements. For example, a certain holographic plate 151 can include 2 sub-layers, and the viewfinder virtual images 200 corresponding to the 2 sub-layers are rectangular and circular, respectively.

[0114] In some embodiments, the viewfinder virtual images 200 corresponding to different sub-layers have different sizes, thereby improving the selectability of the user when shooting.

[0115] FIG. 14 is another schematic diagram of another pair of glasses provided with two sub-layers, according to some embodiments of the present specification. For example, a certain holographic plate 151 on a pair of glasses 100 can include a third sub-layer 1513 and a fourth sub-layer 1514. As shown in FIG. 13, when the light source assembly 140 emits the third reference light 1433, the third reference light 1433 will irradiate on the third sub-layer 1513 and project the corresponding third viewfinder virtual image 230 by interference with the third sub-layer 1513. As shown in FIG. 14, when the light source assembly 140 emits the fourth reference light 1434, the fourth reference light 1434 will irradiate on the fourth sub-layer 1514 and project the corresponding fourth viewfinder virtual image 240 by interference with the fourth sub-layer 1514. The wavelength of the third reference light 1433 is different from the wavelength of the fourth reference light 1434, and the size of the third viewfinder virtual image 230 is different from the size of the fourth viewfinder virtual image 240.

[0116] The sub-layers corresponding to the different size viewfinder virtual image 200 can be arranged in order (increasing or decreasing) on the inner side surface of the diaphragm 110 according to the size of the viewfinder virtual image 200, and by irradiating the corresponding sub-layers with reference light 143 of different wavelengths, the viewfinder virtual image 200 can be gradually enlarged or reduced.

[0117] In some embodiments, the glasses 100 can also include a processing device for data processing. When the user wears the glasses 100, the processing device can realize the focusing of the camera 130 through voice, eye movement recognition, eye tracking and other technologies, and accordingly select the size of the viewfinder virtual image 200 corresponding thereto, to realize the dynamic synchronization of the shooting range of the camera 130 and the picture content of the viewfinder virtual image 200.

[0118] In some embodiments, the camera 210 can be provided with multiple different focal lengths, each focal length corresponding to a size of the viewfinder virtual image 200, and the shooting range of the camera 210 at the corresponding focal length at least includes the picture corresponding to the viewfinder virtual image 200. For each focal length, when the camera 210 is adjusted to the focal length, the light source assembly 140 can emit reference light 143 of the corresponding wavelength to irradiate the corresponding sub-layer on the holographic plate 151 to generate the viewfinder virtual image 200 of the corresponding size.

[0119] In some embodiments, the processing device can obtain the shooting range of the camera at different focal lengths, and determine the degree of coincidence (for example, the coincidence rate) between the aforementioned shooting range and the viewfinder virtual image 200 corresponding to each sub-layer, and determine the corresponding sub-layer based on the aforementioned degree of coincidence, and control the light source assembly 140 to emit reference light 143 of the corresponding wavelength to irradiate the aforementioned sub-layer to generate the viewfinder virtual image 200 of the corresponding size, so as to realize that the viewfinder virtual image 200 can dynamically adapt to the focal length change of the camera 130. For example, the processing device can determine the sub-layer corresponding to the viewfinder virtual image 200 with the highest degree of coincidence as the sub-layer that needs to be irradiated with reference light 143.

[0120] Some embodiments of the present specification assist the user to understand the corresponding shooting range of the camera 130 at different focal lengths by setting viewfinder virtual images 200 of different sizes, and improve the flexibility of the camera 130 shooting.

[0121] FIG. 15 is a schematic diagram of another pair of glasses according to some embodiments of the present specification. In some embodiments, as shown in FIG. 15, the pair of glasses 100 can further include a protective layer 160. The protective layer 160 can be disposed on the inner side surface of the holographic plate 151. By disposing the aforementioned protective layer 160, the holographic plate 151 can be prevented from being directly contacted with the external environment to generate stains and affect the imaging, and the holographic plate 151 can also be prevented from being directly rubbed to cause damage (e.g., the holographic plate 151 is rubbed during cleaning to cause damage), thereby ensuring the accuracy and clarity of the imaging of the holographic plate 151.

[0122] The following will describe another implementation of projecting the frame virtual image 200 in front of the lens 110.

[0123] FIG. 16 is a schematic diagram of another pair of glasses according to some embodiments of the present specification. In some embodiments, the diaphragm 150 can include a mask 152 printed with frame information. The frame information can be printed on the mask by a transfer printing technology during production.

[0124] In some embodiments, as shown in FIG. 16, the light beams emitted by the light source assembly 140 can be transmitted through the mask 152 and then transmitted to the imaging area on the lens 110 via air.

[0125] In some embodiments, the light beams emitted by the light source assembly 140 can also be transmitted through the mask 152 and then transmitted into the lens 110, and then reflected in the lens to reach the imaging area on the lens 110.

[0126] The imaging area can be provided with an optical structure (e.g., one or more of a Fresnel lens, a curved lens, etc.), and the light beams with frame information transmitted through the mask 152 can be presented as the frame virtual image 200 in front of the lens 110 by the optical structure through reflection or refraction.

[0127] In some embodiments, the distance between the light source assembly 140 and the mask 152 is adjustable. For example, the positions of the light source assembly 140 and / or the mask 152 in the pair of glasses 100 can be adjusted to achieve the adjustable distance between the light source assembly 140 and the mask 152.

[0128] Based on this, when the focal length of the camera 130 changes, the distance between the light source assembly 140 and the mask 152 can be adjusted to adjust the size of the projected frame virtual image 200, thereby achieving dynamic adjustment of the frame virtual image 200 when the focal length of the camera 130 changes, assisting the user to understand the corresponding shooting range of the camera 130 at different focal lengths, and improving the flexibility of the camera 130 shooting.

[0129] Some embodiments below will illustrate the arrangement of the light source assembly 140.

[0130] In some embodiments, the light beam emitted by the light source assembly 140 can be diffuse light. The light source assembly 140 can include a light source (e.g., laser 141) and a concave lens (e.g., lens 142), the light beam generated by the light source can be incident on the concave lens, and the concave lens can expand the light beam. Through this arrangement, the size of the light spot area 144 on the diaphragm 150 irradiated by the light beam can be enlarged, thereby ensuring that the viewfinder virtual image 200 can be projected in front of the lens 110 with a suitable size.

[0131] FIG. 17 is a schematic diagram of another pair of glasses according to some embodiments of the present specification. In some embodiments, as shown in FIG. 17, the light beam emitted by the light source assembly 140 can also be parallel light. By generating parallel light, the controllability of the light beam emitted by the light source assembly 140 can be improved, and at the same time, the generated viewfinder virtual image 200 can be clearer. In some embodiments, the size of the light spot area 144 on the diaphragm 150 irradiated by the parallel light generated by the light source assembly 140 can be increased, thereby ensuring that the viewfinder virtual image 200 can be projected in front of the lens 110 with a suitable size.

[0132] Some embodiments below will illustrate some position arrangement modes of the camera 130 and the light source assembly 140 relative to the support 110.

[0133] FIGS. 18A-18C are schematic diagrams of another pair of glasses according to some embodiments of the present specification.

[0134] In some embodiments, as shown in FIGS. 18A and 18B, the support 120 includes a frame 121, temples 122, a hinge 123, and a nose pad 124, wherein the nose pad 124 is arranged between the two lenses 110. In the wearing state, the frame 121 includes two parts extending along the coronal axis and extending along the sagittal axis, wherein the part of the frame 121 extending along the coronal axis fixes the lens 110, and the part of the frame 121 extending along the sagittal axis is rotatably connected to the temple 122 through the hinge 123, and the temple 122 extends along the sagittal axis. As shown in FIG. 18A, the camera 130 and the light source assembly 140 can be arranged on the frame 121, and the light source assembly 140 is arranged on the part of the frame 121 extending along the sagittal axis. As shown in FIG. 18B, the camera 130 can be arranged on the frame 121, and the light source assembly 140 can be arranged on the temple 122.

[0135] In some embodiments, as shown in FIG. 18C, the support 120 includes a frame 121, temples 122, hinges 123, and nose pads 124, wherein the nose pads 124 are disposed between the two lenses 110, the frame 121 extends along the coronal axis, one end of the frame 121 away from the nose pads 124 is rotatably connected to the temples 122 through the hinges 123, the aforementioned temples 122 extend along the sagittal axis, and the camera 130 and the light source assembly 140 can be disposed on the temples 122.

[0136] In some embodiments, as shown in FIGS. 18A and 18B, the camera 130 can be disposed on the frame 121, through which the rotation of the temples 122 around the corresponding rotation axes of the hinges 123 will not affect the central optical axis of the camera 130, thereby avoiding too large deviation between the picture in the viewfinder virtual image 200 and the captured image obtained by the camera 130.

[0137] In some embodiments, as shown in FIG. 18A, the light source assembly 140 can be disposed on the frame 121, through which the rotation of the temples 122 around the corresponding rotation axes of the hinges 123 will not affect the state (e.g., position, angle, etc.) of the light source assembly 140, thereby causing different users wearing the glasses 100 to affect the light beams emitted by the light source assembly 140 with their faces, resulting in unclear viewfinder virtual image 200.

[0138] It should be noted that the aforementioned various position settings of the camera 130 and the light source assembly 140 relative to the support 110 are provided only for illustrative purposes and are not intended to limit the scope of the present specification. In addition to the support 120 shown in various embodiments of the present specification, the support 120 can also be other settings, and correspondingly, the camera 130 and the light source assembly 140 also have other position settings. For those skilled in the art, various modifications or changes can be made according to the description of the present specification, however, the changes and modifications of the aforementioned support 120, and the position settings of the camera 130 and the light source assembly 140 will not deviate from the scope of the present specification.

[0139] Some embodiments of the present specification will describe some position settings of the camera 130 relative to the diaphragm 150.

[0140] FIGS. 19A and 19B are schematic diagrams of another pair of glasses according to some embodiments of the present specification.

[0141] In some embodiments, the camera 130 and the film 150 can be located on the same side of the central axis of the glasses 100, so as to reduce the distance between the camera 130 and the projected viewfinder virtual image 200, and to avoid the picture in the viewfinder virtual image 200 deviating too much from the shooting image obtained by the camera 130. The aforementioned central axis is an axis that divides the glasses 100 into left and right parts, and the central axis can be parallel to the sagittal axis. As shown in FIG. 18A, the camera 130 and the film 150 can be arranged on the right side of the central axis of the glasses 100.

[0142] In some embodiments, the camera 130 and the film 150 can be located on different sides of the central axis of the glasses 100, so as to disperse the structures in the glasses 100, avoid the glasses 100 being easily tilted when worn, and reduce the distribution density of the lines in the glasses 100, and reduce the production difficulty of the glasses 100, and facilitate the later maintenance and replacement. As shown in FIG. 19A, the camera 130 is arranged on the left side of the central axis of the glasses 100, and the film 150 is arranged on the right side of the central axis of the glasses 100.

[0143] In some embodiments, the camera 130 can also be arranged on the central axis of the glasses 100, so as to reduce the distance between the camera 130 and the projected viewfinder virtual image 200, and to avoid the picture in the viewfinder virtual image 200 deviating too much from the shooting image obtained by the camera 130. As shown in FIG. 19B, the camera 130 is arranged on the nose pad 124 of the glasses 100 and on the central axis of the glasses 100.

[0144] In some embodiments, the glasses 100 include two light source assemblies 140 and two lenses 110 and two films 150, each lens 110 is provided with a corresponding film 150, and each lens 110 is provided with a corresponding light source assembly 140, and the two lenses 110 form corresponding viewfinder virtual images 200, and the two viewfinder virtual images 200 can define the same actual scene. Through the foregoing arrangement, the user can clearly see the viewfinder virtual image 200 due to different dominant eyes.

[0145] FIG. 20 is a schematic view of another pair of glasses according to some embodiments of the present specification. As shown in FIG. 20, the glasses 100 include two light source assemblies 140 and two lenses 110 and two films 150, and one light source assembly 140, one lens 110 and one film 150 are arranged on each side of the central axis of the glasses 100. For each side of the light source assembly 140, the light beam emitted by the light source assembly 140 irradiates the film 150 on the side, and projects a viewfinder virtual image 200 in front of the lens 110 on the side. The viewfinder virtual images 200 projected in front of the lenses on the two sides can define the same actual scene.

[0146] FIGS. 21A and 21B are schematic diagrams of yet another eyeglasses, according to some embodiments of the present disclosure.

[0147] In some embodiments, in order to make the structure of the eyeglasses 100 more flexible, the light source assembly 140 can also be disposed on the nose pad 124. As shown in FIGS. 21A and 21B.

[0148] In some embodiments, when the lens 110 includes a first sub-lens 110-1 and a second sub-lens 110-2, the two first sub-lenses 110-1 of the two lenses 110 of the eyeglasses 100 can be different lenses, and the two first sub-lenses 110-1 are connected by the frame 121 and the nose pad 124, as shown in FIG. 21A. In some embodiments, the two first sub-lenses 110-1 of the two lenses 110 of the eyeglasses 100 can be integrated lenses, i.e., the two first sub-lenses 110-1 are the same lens, as shown in FIG. 21B. By designing the two sub-lenses 110-1, the aesthetic level of the eyeglasses 100 can be improved, and the user experience can be improved.

[0149] The foregoing merely illustrates the principles of the application. It will thus be appreciated that those skilled in the art will be able to devise various arrangements which, although not explicitly described or shown herein, embody the principles of the application and are thus within its spirit and scope. It will be understood that the application is not limited to the embodiments described above, but includes all embodiments which would normally occur to persons of ordinary skill in the art upon reading the above description and appended claims.

[0150] Furthermore, some of the features of the present application can be used to advantage without the corresponding use of other features. As such, the foregoing description shall not be construed as limiting, but is instead required to be read to only cover such alternatives consistent with the spirit and scope of the application as defined by the appended claims, along with the full scope of equivalents to which such claims are entitled. It is thus expressly intended that all combinations of those elements which perform substantially the same function in substantially the same way to achieve the same results are within the scope of the application. Moreover, it should be recognized that structures and / or devices shown and / or described in connection with any disclosed structure can be implemented in sequential as well as in parallel architectures.

[0151] Similarly, it should be noted that, in the interest of simplifying the present disclosure, not all of the features of the embodiments described herein are necessarily included in one embodiment. Thus, it will be appreciated that the scope of the application is not limited to specific disclosed embodiments, but encompasses many alternatives and modifications. Furthermore, it should be noted that the use of particular terminology when describing certain features or aspects of the application should not be taken to indicate that such terminology is being redefined herein to be restricted to include any specific characteristics of the features or aspects of the application with which that terminology is associated.

[0152] Some embodiments use numerical values to describe components, quantities of attributes. It should be understood that such numerical values used in the description of embodiments are, in some examples, modified by the modifier "approximately." Unless otherwise indicated, "approximately" or indication that a numerical value is recited allows for a variation in the stated numerical value of ±20%. Accordingly, numerical values used in the specification and claims of some embodiments are approximations. Variations in these values are expected as part of the nature of the underlying technical field and / or expected to be within the ability of one of ordinary skill in the art, depending upon the particular context in which the values are used. In some embodiments, numerical values should be considered in the context and be rounded to the house or common number of significance. Notwithstanding that the numerical ranges and parameters setting forth the broadest scope of some embodiments of the application are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The application is not limited to the specific examples.

[0153] Finally, it should be understood that the embodiments described herein are intended to be illustrative only. Numerous modifications and variations are possible in light of the above teachings and within the scope of the application, and therefore, the application should not be limited to the specifically described embodiments. Rather, it is the intent that all such modifications and variations be included within the scope of the application. Accordingly, as these specific examples are intended to be illustrative only and not limiting of the scope of the application, it is contemplated that other arrangements, modifications, and variations can be practiced within the scope of the application.

Claims

1. An eyeglass, comprising: a lens; a holder, the lens being disposed on the holder; a camera, fixed on the holder, configured to take a picture of a target scene; a light source assembly, fixed on the holder; a film, the film being recorded with framing information; wherein a light beam emitted by the light source assembly irradiates the film and forms a framing virtual image in front of the lens, the framing virtual image being configured to define an actual scene, the actual scene at least partially overlapping with the target scene.

2. The eyeglasses of claim 1, wherein, An included angle between a central optical axis of the framing virtual image and a central optical axis of the camera is 0°-10°.

3. The eyeglasses of claim 1, wherein, A field of view angle of the framing virtual image is less than or equal to a field of view angle of the camera.

4. The eyeglasses of any of claims 1-3, wherein, The film comprises a holographic plate recorded with the framing information, the light beam irradiating the holographic plate and forming the framing virtual image in front of the lens.

5. The eyeglasses of claim 4, wherein, The light source assembly comprises a light source and an optical lens group, the light beam emitted by the light source forming a reference light after being expanded by the optical lens group, the reference light interfering with optical fringes of the holographic plate.

6. The eyeglasses of claim 5, wherein, The area of the light spot region formed on the membrane by the reference light is 1 cm 2 - 9 cm 2 .

7. The eyeglasses of claim 5, wherein, A horizontal distance from a center of a light spot area formed by the reference light on the film to the laser light source is 2 cm-6 cm.

8. The eyeglasses of claim 5, wherein, The reference light is irradiated to the holographic plate via air propagation.

9. The eyeglasses of claim 5, wherein, The reference light is irradiated to the holographic plate after being reflected in the lens.

10. The eyeglasses of claim 9, wherein, The lens is provided with a grating configured to adjust a propagation direction of the reference light in the lens.

11. The eyeglasses of claim 5, wherein, The light source comprises a laser light source, a first divergence angle of a fast axis of the laser light source being greater than a second divergence angle of a slow axis of the laser light source.

12. The eyeglasses of claim 11, wherein, The first divergence angle is 20°-70°, and the second divergence angle is 6°-25°.

13. The eyeglasses of claim 11, wherein, A first divergence angle of a light spot area formed by the reference light on the film in a first direction is greater than 20°, the first direction being a direction of the fast axis of the laser light source; a second divergence angle of the light spot area in a second direction is greater than 10°, the second direction being a direction of the slow axis of the laser light source.

14. The eyeglasses of claim 4, wherein, The lens comprises a first sub-lens and a second sub-lens, the holographic plate being disposed in a gap between the first sub-lens and the second sub-lens.

15. The eyeglasses of claim 14, wherein, A thickness of the gap is 10 um-300 um.

16. The eyeglasses of claim 5, wherein, The light source assembly further comprises a housing, the light source being disposed in the housing, the housing being provided with an opening, the optical lens group being disposed in the opening, a shape of a light spot area formed by the reference light on the film corresponding to a shape of the opening.

17. The eyewear of claim 4, wherein, The holographic plate comprises a plurality of sub-layers, each of the sub-layers being respectively engraved with different framing information, different sub-layers being configured to interfere with reference light of different wavelengths to form corresponding framing virtual images.

18. The eyeglasses of claim 17, wherein, The corresponding framing virtual images of different sub-layers have different sizes.

19. The eyeglasses of any one of claims 1-3, wherein, The film comprises a mask printed with the framing information.

20. The eyeglasses of claim 19, wherein, The light beam passes through the mask and propagates to the lens via air.

21. The eyewear of claim 19, wherein, The light beam passes through the mask and enters the lens, and reaches an imaging area on the lens after being reflected in the lens.

22. The eyewear of claim 1, wherein, The glasses comprise two light source assemblies and two lenses, two diaphragms, each lens is provided with a diaphragm, each lens corresponds to a light source assembly, two lenses form corresponding viewfinder virtual images respectively, and the two viewfinder virtual images define the same actual scene.

Images