Lens assembly and glasses equipment

Abstract

The utility model relates to the technical field of optics, and discloses a lens assembly and glasses equipment, and the lens assembly comprises a light-transmitting substrate with a first set focal power for correcting the refractive abnormality of a user; the holographic optical element covers a non-central area of the light-transmitting substrate; if the refractive abnormality of the user is myopia, the holographic optical element is used for diffracting the projection light into the eyes of the user and imaging in front of the retina of the user; and if the refractive abnormality of the user is hyperopia, the holographic optical element is used for diffracting the projection light and imaging the projection light behind the retina of the user. According to the technical scheme provided by the invention, the deepening of myopia or hyperopia is delayed under the condition of ensuring the normal vision of the user.

Description

Technical Field

[0001] The utility model relates to the technical field of optical devices, in particular to a lens assembly and a glasses device. Background Art

[0002] Refractive anomalies include hyperopia and myopia. Myopia is characterized in that the eye focuses distant objects in front of its retina, and hyperopia is characterized in that the eye focuses near objects behind its retina.

[0003] With the gradual popularization of the use of electronic products, the increasing academic pressure of students and other factors, the proportion of myopia among teenagers is getting higher and higher, and it is getting younger and younger. Glasses lenses, contact lenses and refractive surgery can all be used to treat refractive errors of the eyes. Among them, both glasses lenses and contact lenses adjust the light path transmission lens through lenses with optical power so that light can be imaged on the retina again; while refractive surgery reduces the axial length of the eye lens through surgery, so that light can be imaged on the retina, but refractive surgery can only solve the problem of refractive error of myopia.

[0004] It can be seen that the above methods for solving refractive anomalies do not slow down or delay the progression of myopia or hyperopia. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a lens assembly and a glasses device, which can delay the progression of myopia or hyperopia on the basis of ensuring that users with refractive anomalies can see normally.

[0006] To solve the above technical problems, the utility model provides a lens assembly, including:

[0007] A light-transmitting substrate with a first set optical power; the first set optical power is the optical power corresponding to correcting the refractive anomaly of the user;

[0008] A holographic optical element covering and arranged in the non-central area of the light-transmitting substrate, so that ambient light enters the user's eyes through the central area of the light-transmitting substrate;

[0009] And a light source assembly for projecting projection light onto the holographic optical element;

[0010] Wherein, the holographic optical element has a second set optical power; if the refractive anomaly of the user is myopia, the holographic optical element is used to diffract the projection light into the user's eyes and form an image in front of the user's retina; if the refractive anomaly of the user is hyperopia, the holographic optical element is used to diffract the projection light into the user's eyes and form an image behind the user's retina.

[0011] In an optional embodiment of the present application, the holographic optical element is an annular optical element centered on the central region of the transparent substrate.

[0012] In an optional embodiment of the present application, the holographic optical element is a plurality of concentric ring optical elements centered on the central region of the transparent substrate.

[0013] In an optional embodiment of the present application, the holographic optical element includes a first holographic optical element, a second holographic optical element, and a third holographic optical element stacked;

[0014] Wherein, the first holographic optical element, the second holographic optical element, and the third holographic optical element are respectively used to diffract light rays in different wavelength ranges of the projection light rays output by the light source assembly into the eyes of the user.

[0015] In an optional embodiment of the present application, the transparent substrate includes a transparent lens having a first set optical power.

[0016] In an optional embodiment of the present application, the transparent substrate includes a planar transparent lens with an optical power of 0, and a refractive holographic optical element disposed at least covering the central region of the planar transparent lens, and the refractive holographic optical element has a first set optical power.

[0017] In an optional embodiment of the present application, the refractive holographic optical element at least includes a first refractive holographic optical element, a second refractive holographic optical element, and a third refractive holographic optical element stacked;

[0018] Wherein, the first refractive holographic optical element, the second refractive holographic optical element, and the third refractive holographic optical element are respectively used to diffract light rays in a first wavelength range, a second wavelength range, and a third wavelength range of the ambient light into the eyes of the user.

[0019] In an optional embodiment of the present application, the refractive holographic optical element includes a plurality of sub-refractive holographic optical elements distributed in different regions on the planar transparent lens, wherein the optical power of at least one of the sub-refractive holographic optical elements is the first set optical power, and the magnitudes of the optical powers of the remaining sub-refractive holographic optical elements are different from the magnitude of the first set optical power.

[0020] In an optional embodiment of the present application, it further includes an ambient light sensor for sensing the ambient light; the light source assembly is a light source with adjustable brightness for outputting projection light rays.

[0021] A glasses device includes the lens assembly described in any of the above items.

[0022] A lens assembly and a glasses device provided by the present utility model. The lens assembly includes a light-transmitting substrate having a first set optical power; the first set optical power is the optical power corresponding to correcting the refractive anomaly of the user; a holographic optical element covering and disposed in a non-central area of the light-transmitting substrate so that ambient light enters the user's eyes through the central area of the light-transmitting substrate; and a light source assembly for projecting projection light onto the holographic optical element; wherein the holographic optical element has a second set optical power; if the user's refractive anomaly is myopia, the holographic optical element is used to diffract the projection light and enter the user's eyes, and the image is formed in front of the user's retina; if the user's refractive anomaly is hyperopia, the holographic optical element is used to diffract the projection light and enter the user's eyes, and the image is formed behind the user's retina.

[0023] The lens assembly of the present application includes a light-transmitting substrate having a first set optical power. The first set optical power of the light-transmitting substrate itself can enable the light passing through the light-transmitting substrate to form an image on the user's retina. On this basis, a holographic optical element is further covered and disposed in a non-central area of the light-transmitting substrate and a light source assembly for projecting projection light onto the holographic optical element is provided in the present application. After the holographic optical element diffracts the projection light, the projection light enters the human eye and can form an image at a position in front of or behind the user's retina, thereby enabling the projection light diffracted and incident by the holographic optical element to delay the deepening of myopia or hyperopia; and because the central area of the light-transmitting substrate is not covered by the holographic optical element, ambient light can enter the human eye from the central area of the light-transmitting substrate, and the light-transmitting substrate itself has the first set optical power, so that the ambient light entering the human eye through the central area of the light-transmitting substrate can form an image on the user's retina.

[0024] It can be seen that in the actual use process of the lens assembly in the present application, the user can normally view the scenery in the environment through the central area of the light-transmitting substrate, and at the same time, the holographic optical element can diffract and project projection light into the user's eyes, thereby forming an image that delays the deepening of the user's refractive anomaly in front of or behind the retina; when the user wears the lens assembly, while ensuring normal vision of the user, it is beneficial to delay the deepening of myopia or hyperopia. Description of the Drawings

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 Schematic structural diagram of the lens assembly provided by the embodiment of the present application;

[0027] Figure 2 Schematic structural diagram of the glasses device including the lens assembly provided by the embodiment of the present application;

[0028] Figure 3 Schematic structural diagram of another lens assembly provided by the embodiment of the present application;

[0029] Figure 4 Schematic structural diagram of yet another lens assembly provided by the embodiment of the present application;

[0030] Figure 5 Schematic cross-sectional structure diagram of the lens assembly provided by the embodiment of the present application. Detailed implementation manners

[0031] In this application, it is considered that for teenagers, whether there is refractive error such as myopia or hyperopia, before reaching adulthood, the vision is still in the development stage and there is a certain room for recovery.

[0032] Merely configuring lenses with corresponding optical powers cannot change the vision problems existing in the user itself. It only ensures that the user can clearly see things with the help of the lenses. Once the glasses are removed, the user still cannot clearly see objects. Moreover, as the wearing time of the glasses increases, the user will be more adapted to seeing things with the assistance of the glasses, which will further make the refractive error more serious. And refractive surgery to solve refractive error problems has great limitations. For many users with refractive errors, they do not meet the conditions for refractive surgery, and it is impossible to use refractive surgery to solve the refractive error problem.

[0033] Therefore, this application provides a technical solution that can, to a certain extent, delay the deepening of myopia or hyperopia in users.

[0034] To enable those skilled in the art to better understand the solution of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] As Figures 1 to 5 shown, Figure 1 is a schematic structural diagram of a lens assembly provided by an embodiment of the present application; Figure 2 is a schematic structural diagram of a glasses device including the lens assembly provided by an embodiment of the present application; Figure 3 is a schematic structural diagram of another lens assembly provided by an embodiment of the present application; Figure 4 is a schematic structural diagram of yet another lens assembly provided by an embodiment of the present application; Figure 5 is a schematic cross-sectional structural diagram of the lens assembly provided by an embodiment of the present application.

[0036] In a specific embodiment of the present application, the lens assembly may include:

[0037] A light-transmitting substrate 1 having a first set optical power; the first set optical power is the optical power corresponding to correcting the refractive anomaly of the user;

[0038] A holographic optical element 2 covering and disposed in the non-central region of the light-transmitting substrate 1 so that ambient light is incident on the user's eyes through the central region 10 of the light-transmitting substrate 1;

[0039] And a light source assembly 3 for projecting projection light onto the holographic optical element 2;

[0040] Wherein, the holographic optical element 2 has a second set optical power; if the user's refractive anomaly is myopia, the holographic optical element 2 is used to diffract the projection light and incident it into the user's eyes, forming an image in front of the user's retina; if the user's refractive anomaly is hyperopia, the holographic optical element 2 is used to diffract the projection light and incident it into the user's eyes, forming an image behind the user's retina.

[0041] As Figure 1As shown, the light-transmitting substrate 1 can be an optical element specifically configured according to the refractive anomaly of the user. If the user has a refractive anomaly of myopia, the light-transmitting substrate 1 can directly adopt a myopia glasses lens that can correct the user's myopia refractive anomaly, mostly a concave lens, or a lens with a similar function to the myopia glasses lens. For example, a refractive holographic optical element with a certain optical power is set on a plane lens to correct the user's myopia refractive anomaly. Similarly, for a user with a refractive anomaly of hyperopia, the light-transmitting substrate 1 can adopt a hyperopia glasses lens that can correct the user's refractive anomaly, mostly a convex lens, or it can also be a refractive holographic optical element set on a plane lens to correct the user's hyperopia refractive anomaly. When ambient light or other light enters the user's eyes through the light-transmitting substrate 1, due to the corrective effect of the light-transmitting substrate 1 on the light, the light can be imaged on the user's retina, that is, the user can see normally.

[0042] On this basis, in the present application, a holographic optical element 2 is further covered and arranged in the non-central area of the light-transmitting substrate 1, and a light source assembly 3 for projecting projection light onto the holographic optical element 2 is configured.

[0043] Among them, the holographic optical element 2 is an optical element with a second set optical power. When light enters the holographic optical element 2 at a focal power within a preset angle range, the holographic optical element 2 can change the path of the incident light, thereby providing an optical power different from that of the transparent substrate 1; when the incident light enters the holographic optical element 2 at an angle outside the preset angle range, the light completely or substantially completely passes through the holographic optical element 2 without significantly changing or not changing the path of the light. Thus, when the projection light output by the light source assembly 3 enters the holographic optical element 2, the holographic optical element 2 diffracts the projection light. Because the holographic optical element 2 is an optical element with a second set optical power; therefore, after diffracting the projection light, it can make the projection light image in front of or behind the user's retina.

[0044] For a user with a refractive anomaly of myopia, the main reason is the myopia defect caused by the elongation of the eye axis of the lens. Therefore, for a user with a myopia refractive anomaly, the main function of the holographic optical element 2 is to diffract the projection light so that the diffracted projection light entering the human eye images at a position in front of the user's retina, thereby inhibiting the elongation of the eye axis to a certain extent and delaying the deepening of myopia.

[0045] Similarly, when the user has refractive anomaly of hyperopia, the main reason is that the eye axis of the lens is too short. Therefore, for the user with refractive anomaly of hyperopia in this embodiment, the holographic optical element 2 can diffract the projection light so that the projection light forms an image at a position behind the user's retina, thereby suppressing the shortening of the eye axis to a certain extent and delaying the deepening of hyperopia.

[0046] It should be noted that in practical applications, it is also possible to consider directly using the transparent substrate 1 with the central region 10 having a first set optical power, so that the ambient light can form an image on the user's retina, while the non-central region of the transparent substrate 1 is directly set as a plane mirror without optical power, and there is no need to set the light source assembly 3. It can directly make the ambient light incident on the human eye through the non-central region of the transparent substrate 1 form an image at a position in front of (in the case of myopia, in front of the retina) or behind (in the case of hyperopia, behind the retina) the user's retina, and can also delay the deepening of myopia or hyperopia. However, taking the user with refractive anomaly of myopia as an example, since there may be problems such as insufficient light brightness even when the ambient light forms an image in front of the retina, the effect of alleviating the user's refractive anomaly of myopia may be poor; the same problem also exists for the user with refractive anomaly of hyperopia.

[0047] Therefore, in the lens assembly of this embodiment, the transparent substrate 1 is divided into two parts. One part is the central region 10, so that the user can normally view the scenery of the external environment through the central region 10 on the transparent substrate 1, without affecting the user's normal daily life and work; on this basis, by using the holographic optical element 2 in the non-central region of the transparent substrate 1 and the light source assembly 3 that outputs projection light to the holographic optical element 2, an image is formed at a position in front of or behind the user's retina, thereby delaying the deepening of the user's myopia or hyperopia to a certain extent.

[0048] It can be understood that in practical applications, the light source assembly 3 may not be set, and only the ambient natural light is diffracted by the holographic optical element 2 and then incident on the human eye, which can also play a role in delaying the deepening of myopia or hyperopia.

[0049] In the embodiment where the light source assembly 3 is provided, in order to prevent the light in the environment from passing through the holographic optical element 2 and incident on the human eye to form stray light, a filter film can be further provided on the holographic optical element 2, and only the light in the wavelength range of the projection light is allowed to pass through the holographic optical element 2 and incident on the human eye.

[0050] As described above, the holographic optical element 2 mainly covers the non-central region of the transparent substrate 1, such as Figure 1As shown, the holographic optical element 2 can be an annular optical element, only covering a partial non - central area of the light - transmissive substrate 1; in practical applications, the holographic optical element 2 can also be an elliptical - ring optical element, a square optical element, etc.

[0051] For another example Figure 2 As shown, the holographic optical element 2 can also cover all non - central areas outside the central area of the light - transmissive substrate 1. Of course, in Figure 1 and Figure 2 the non - central areas shown are circular central areas. In practical applications, the central area 10 can also be a square central area, an elliptical central area, etc.

[0052] In addition, the holographic optical element 2 does not necessarily have only one optical element. As Figure 3 shown, the holographic optical element 2 can also be multiple concentric - ring optical elements 20 centered on the central area 10 of the light - transmissive substrate 1. In Figure 3 the holographic optical element 2 shown is multiple concentric - ring optical elements. In practical applications, it can also be multiple concentric - square - ring optical elements, concentric - elliptical - ring optical elements, etc.

[0053] Moreover, in practical applications, the holographic optical element 2 is not limited to being an annular optical element. For example, in order to avoid blocking the user's line of sight in the left - right direction, a strip - shaped holographic optical element 2 can be further provided at each of the upper and lower edge positions of the light - transmissive substrate 1, so as to facilitate the user to view the scenery in the environment in the left - and - right directions.

[0054] In addition, multiple discrete - point optical elements can also be considered as the holographic optical element 2, so as to minimize the blockage of the user's line of sight by the holographic optical element 2.

[0055] Furthermore, considering that in practical applications, generally a holographic optical element 2 can only diffract the optical elements in a small wavelength range with high efficiency. In order to make the color of the projection light more rich, the holographic optical element 2 can include:

[0056] The first holographic optical element 201, the second holographic optical element 202, and the third holographic optical element 203 which are stacked;

[0057] wherein, the first holographic optical element 201, the second holographic optical element 202, and the third holographic optical element 203 are respectively used to diffract the light in different wavelength ranges of the projection light output by the light - source assembly 3 into the user's eyes.

[0058] In practical applications, the first holographic optical element 201 can be used to diffract projection light within the red wavelength band, the second holographic optical element 202 can be used to diffract projection light within the blue wavelength band, and the third holographic optical element 203 can be used to diffract projection light within the green wavelength band.

[0059] As shown above, the holographic optical element 2 can be an integral holographic optical element disposed on the transparent substrate 1. In this case, the holographic optical element 2 can be an optical element formed by stacking three layers; alternatively, the holographic optical element 2 can also be composed of multiple non-connected optical elements in different regions, such as Figure 3 the shown holographic optical element. Taking Figure 4 the shown multi-loop concentric ring optical element 20 as an example, each loop of the concentric ring optical element 20 can include three optical elements for diffracting light within different wavelength bands of different colors, or each loop of the concentric ring optical element 20 can have only one optical element, and the wavelength bands of the projection light diffracted by each loop of the concentric ring optical element 20 are different from each other.

[0060] Therefore, when the holographic optical element 2 is divided into multiple non-connected regions distributed on the transparent substrate 1, the holographic optical element 2 in each region can be either a single layer or multiple stacked layers. In this regard, no specific limitation is made in this application.

[0061] In addition, for the transparent substrate 1, it can have a first set optical power only at the position where the holographic optical element 2 is not covered, and the optical power at the position where the holographic optical element 2 is covered is 0. Alternatively, the entire transparent substrate 1 can be considered as a transparent element with a first set optical power, and on this basis, the holographic optical element 2 is disposed on the transparent substrate 1.

[0062] As mentioned above, for the transparent substrate 1, a transparent lens with a first set optical power can be used, and this transparent lens can be similar to the lenses of conventional myopia glasses or hyperopia glasses.

[0063] In addition, the transparent substrate 1 can also adopt a planar transparent lens 100 with an optical power of 0. In order to enable the transparent substrate 1 to have a first set optical power, a refractive holographic optical element that at least covers the central region of the planar transparent lens 100 and has a first set optical power can be further disposed on the planar transparent lens 100.

[0064] Refer to Figure 5, the planar light-transmitting lens 100 can be divided into a first region and a second region. The first region is also the central region on the planar light-transmitting lens 100. A refractive holographic optical element with a first set optical power is adhesively disposed in the first region of the planar light-transmitting lens 100, and a holographic optical element 2 with a second set optical power is adhesively disposed in the second region.

[0065] In addition, when the refractive anomaly degree of the user changes, the lens assembly may no longer be suitable for the user. At this time, it can be considered to only replace the refractive holographic optical element and the holographic optical element 2 on the planar light-transmitting lens 100, and configure more suitable optical elements by using the current refractive anomaly degree of the user, without replacing the entire lens assembly, thereby reducing the use cost of the lens assembly to a certain extent.

[0066] Furthermore, in order to adapt to the use of people with different degrees of refractive anomalies, or when the refractive anomaly degree of the current user changes and they can still see clearly, in another optional embodiment of the present application, the refractive holographic optical element may further include:

[0067] A plurality of sub-refractive holographic optical elements distributed in different regions on the planar light-transmitting lens 100, wherein the optical power of at least one sub-refractive holographic optical element among the respective sub-refractive holographic optical elements is the first set optical power, and the magnitudes of the optical powers of the remaining sub-refractive holographic optical elements are different from the magnitude of the first set optical power.

[0068] Specifically, the central region on the planar light-transmitting lens 100 can be further divided into a plurality of different regions, and each region is provided with a sub-refractive holographic optical element. The magnitudes of the first set optical powers corresponding to the respective sub-refractive holographic optical elements are different. Thus, the user can view the environmental scenery by selecting a sub-refractive holographic optical element that matches their myopia or hyperopia degree.

[0069] As mentioned above, for a single optical element, the wavelength range of the light that can be diffracted by it is relatively small, while the light in the environment is often rich in colors, and the wavelength range almost covers the entire visible light wavelength range. In order to prevent the user from only being able to observe a certain part of the colored light through the light-transmitting substrate, resulting in a color distortion problem with the actual environmental scenery, in another optional embodiment of the present application, the refractive holographic optical element disposed on the planar light-transmitting lens may further include:

[0070] At least including a first refractive holographic optical element 101, a second refractive holographic optical element 102, and a third refractive holographic optical element 103 stacked;

[0071] Among them, the first refractive holographic optical element 101, the second refractive holographic optical element 102, and the third refractive holographic optical element 103 are respectively used to diffract the light in the first wavelength range, the second wavelength range, and the third wavelength range in the ambient light into the user's eyes.

[0072] It can be understood that the light in the first wavelength range that can be diffracted efficiently by the first refractive holographic optical element 101 can be the light in the red wavelength range; the light in the second wavelength range that can be diffracted efficiently by the second refractive holographic optical element 102 is the light in the blue wavelength range; and the light in the third wavelength range that can be diffracted efficiently by the third refractive holographic optical element 103 is the light in the green wavelength range.

[0073] Thus, through the first refractive holographic optical element 101, the second refractive holographic optical element 102, and the third refractive holographic optical element 103, the light in the range of the three primary color wavelengths can be diffracted efficiently, so that the light in each wavelength range in the ambient light can be diffracted and incident into the user's eyes to the greatest extent, ensuring the color richness of the environmental scene viewed by the user.

[0074] For the holographic optical element 2 in each of the above embodiments, a holographic grating or other optical element with a diffraction function can be specifically used, and no specific limitation is made in this application.

[0075] Furthermore, considering that as the environment where the user wears the lens assembly changes, the brightness of the ambient light will gradually change. If the brightness of the projection light diffracted by the holographic optical element into the human eye is too high, resulting in too high a brightness of the projection image, it will also affect the user's normal vision to a certain extent. Therefore, in another optional embodiment of the present application, it may further include:

[0076] An ambient light sensor for sensing the ambient brightness; the light source assembly 3 is a light source with adjustable brightness for outputting projection light.

[0077] By detecting and determining the brightness of the ambient light through the ambient light sensor, the brightness of the projection light output by the light source assembly 3 can be adjusted according to the brightness of the ambient light, so that the brightness of the projection light output by the light source assembly 3 is not too bright and thus does not affect the user's normal vision.

[0078] In summary, the lens assembly in the present application includes a light-transmitting substrate having a first set optical power, which can cause the light passing through the light-transmitting substrate to form an image on the retina of the user; further, a holographic optical element is covered and arranged in a non-central area on the light-transmitting substrate, and a light source assembly for projecting projection light onto the holographic optical element is arranged, so that a projection image can be formed at a position before or after the retina of the user, and further, the holographic optical element diffracts the projection light incident into the user's eyes, which can delay the deepening of myopia or hyperopia; thus, it can be seen that the lens assembly in the present application can not only normally view the objective lens in the environment through the central area of the light-transmitting substrate, but also diffract projection light into the user's eyes through the holographic optical element, and then form an image that delays the deepening of the user's refractive abnormality in front of or behind the retina; when the user wears the lens assembly, the deepening of myopia or hyperopia can be delayed while ensuring the user's normal vision.

[0079] The present application also provides an embodiment of a glasses device, as Figure 2 shown, Figure 2 which is a glasses device including the above lens assembly. The glasses device may include the lens assembly described in any one of the above.

[0080] It can be understood that for the lens assembly of the above embodiment, it is not limited to being applied to glasses devices only, and can also be a helmet or other similar head-mounted devices, etc. In this regard, no specific limitations are made in the present application.

[0081] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes the inherent elements thereof. Without more limitations, the element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element. In addition, the parts of the above technical solutions provided in the embodiments of the present application that are consistent with the corresponding technical solutions in the prior art in terms of implementation principles are not described in detail to avoid excessive elaboration.

[0082] In this article, specific examples are used to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art in the technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A lens assembly, characterized in that, Comprising: A transparent substrate having a first set focal power; The first set focal power is the focal power corresponding to correcting the refractive anomaly of the user; A holographic optical element covering and disposed in a non-central region of the transparent substrate, so that ambient light enters the user's eyes through the central region of the transparent substrate; And a light source assembly for projecting projection light onto the holographic optical element; Wherein, the holographic optical element has a second set focal power; if the user's refractive anomaly is myopia, the holographic optical element is used to diffract the projection light into the user's eyes and form an image in front of the user's retina; if the user's refractive anomaly is hyperopia, the holographic optical element is used to diffract the projection light into the user's eyes and form an image behind the user's retina.

2. The lens assembly according to claim 1, wherein The holographic optical element is an annular optical element centered on the central region of the transparent substrate.

3. The lens assembly according to claim 1, wherein The holographic optical element is a plurality of concentric ring optical elements centered on the central region of the transparent substrate.

4. The lens assembly according to claim 1, wherein, The holographic optical element includes a first holographic optical element, a second holographic optical element, and a third holographic optical element stacked; Wherein, the first holographic optical element, the second holographic optical element, and the third holographic optical element are respectively used to diffract light in different wavelength ranges in the projection light output by the light source assembly into the user's eyes.

5. The lens assembly according to any one of claims 1 to 4, characterized in that, The transparent substrate includes a transparent lens having a first set focal power.

6. The lens assembly according to any one of claims 1 to 4, characterized in that The transparent substrate includes a planar transparent lens with a focal power of 0, and a refractive holographic optical element covering at least the central region of the planar transparent lens, and the refractive holographic optical element has a first set focal power.

7. The lens assembly according to claim 6, wherein The refractive holographic optical element at least includes a first refractive holographic optical element, a second refractive holographic optical element, and a third refractive holographic optical element stacked; Wherein, the first refractive holographic optical element, the second refractive holographic optical element, and the third refractive holographic optical element are respectively used to diffract light in the first wavelength range, the second wavelength range, and the third wavelength range in the ambient light into the user's eyes.

8. The lens assembly according to claim 6, wherein, The refractive holographic optical element includes a plurality of sub-refractive holographic optical elements distributed in different regions on the planar transparent lens, wherein the focal power of at least one of the sub-refractive holographic optical elements is the first set focal power, and the focal powers of the remaining sub-refractive holographic optical elements are different from the size of the first set focal power.

9. The lens assembly according to claim 1, wherein, It further includes an ambient light sensor for sensing the ambient light; the light source assembly is a light source with adjustable brightness for outputting projection light.

10. A glasses device, characterized in that, Including the lens assembly according to any one of claims 1 to 9.

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