A peripheral defocus lens assembly and eyewear

Abstract

This invention discloses a peripheral defocus lens assembly, comprising: a base lens that generates perspective power for transmitted light; a single image source disposed at the edge of the base lens near the eye and away from the base lens; and multiple beam-splitting surfaces embedded in the base lens and distributed within the base lens at different tilt angles, the central normals of the multiple beam-splitting surfaces being inclined relative to the central normal of the lens towards the side where the image source is located; the light illumination range of the single image source covers all beam-splitting surfaces; each beam-splitting surface and the shared image source form a defocus unit, each beam-splitting surface reflecting the light emitted from the image source to form converging light rays directed towards the exit pupil, forming a defocused image after entering the eye; the multiple defocused images formed by the reflections of the multiple beam-splitting surfaces are distributed in the peripheral field of vision. This invention also discloses eyeglasses including the above-described peripheral defocus lens assembly, used to achieve defocus stimulation, inhibit axial elongation, and achieve the purpose of myopia control.

Description

Technical Field

[0001] This invention relates to a peripheral defocus lens assembly and also to eyeglasses. Background Technology

[0002] In recent years, the incidence of myopia in my country has remained high, making it a significant public health issue. In today's fast-paced society, with high work and study pressures and frequent use of electronic products, myopia prevention and control, especially for teenagers, is becoming increasingly important. The development of myopia prevention and control methods based on defocus theory has provided a new direction for myopia control. Currently, commonly used myopia control lenses are defocus lenses. Defocus lenses allow the image of the central field of vision to fall on the retina, thus completing refractive correction; and they also ensure that the image of the peripheral field of vision falls in front of the retina, inhibiting axial elongation and slowing the progression of myopia while maintaining clear visual imaging. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a peripheral defocus lens assembly and eyeglasses.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0005] A peripheral defocus lens assembly includes:

[0006] A base lens, wherein the front and rear surfaces of the base lens have different surface shapes to produce a transmittance of light;

[0007] A single image source is positioned at the edge of one side of the lens, away from the base lens setup, and

[0008] Multiple beam-splitting surfaces are embedded in the base lens and distributed in the base lens at different tilt angles. The central normal of the multiple beam-splitting surfaces is tilted towards the side where the image source is located relative to the central normal of the lens.

[0009] The light irradiation range of the single image source covers all the beam splitters; the beam splitters are used to reflect the light emitted by the image source to form converging light rays that are directed toward the exit pupil and form a defocused image after entering the human eye; the multiple defocused images formed by the reflection of multiple beam splitters are distributed in the peripheral field of view far away from the visual axis.

[0010] Preferably, the image source is tilted towards the base lens, and the diffusion angle of the light emitted by the image source is between 20° and 60°.

[0011] Preferably, the surface shape of the beam-splitting surface is a freeform surface.

[0012] Preferably, the optical shape of the beam-splitting surface is an XY polynomial freeform surface with an ellipsoidal base, and its optical description equation is expressed as:

[0013]

[0014] Where l1 and l2 represent the distances from any point on the ellipsoid to the two foci. It represents half the angle between the lines connecting any point on the ellipsoid to the two foci.

[0015] Preferably, the beam-splitting surface is concave towards the human eye.

[0016] Preferably, the Alpha tilt angles of the plurality of beam-splitting surfaces gradually decrease from top to bottom, and the Beta tilt angles of the plurality of beam-splitting surfaces are symmetrical about the vertical plane containing the view axis.

[0017] Preferably, the Alpha tilt angle of the beam-splitting surface is between 0° and 30°, and the Beta tilt angle of the plurality of beam-splitting surfaces is between ±20°.

[0018] Preferably, the positions of the plurality of beam-splitting surfaces are arranged in a ring around the center of the base lens.

[0019] Preferably, the positions of the plurality of beam-splitting surfaces are symmetrically distributed relative to the horizontal and / or vertical axes of the base lens.

[0020] A pair of eyeglasses includes a frame and two sets of peripheral defocus lens assemblies, respectively corresponding to the left and right eyes. In each set of peripheral defocus lens assemblies, the base lens is disposed in the frame, the image source is disposed at the front of the temple near the base lens, and the vertical distance from the image source to the inner surface of the base lens is between 15mm and 30mm.

[0021] The eyeglasses provided by this invention include peripheral defocus lens assemblies corresponding to the left and right eyes, respectively. Each peripheral defocus lens assembly includes a base lens, multiple beam-splitting surfaces embedded in the base lens, and a single image source located on the exterior of the base lens and near the eye. By embedding multiple beam-splitting surfaces in the base lens and combining them with the single image source located on the temple, each peripheral defocus lens assembly achieves separate reflection of light from the single image source by multiple beam-splitting surfaces, thereby forming multiple defocused images in the peripheral field of vision of the human eye. This defocus stimulation inhibits axial elongation, achieving the purpose of myopia control. The aforementioned peripheral defocus lens assembly and eyeglasses can be customized with specific surface parameters of the base lens and beam-splitting surfaces according to the wearer's vision, thereby accurately correcting myopia refractive errors. While ensuring clear visual images, defocused images are superimposed on real-world images in an augmented reality manner, without affecting the perspective direction of the real-world image. Furthermore, the image source can be manually activated and deactivated as needed, adapting to diverse application environments where defocus is required or not. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the peripheral defocus lens assembly provided in the first embodiment;

[0023] Figure 2 for Figure 1 A schematic diagram showing the arrangement of the beam-splitting surface in the peripheral defocusing lens assembly;

[0024] Figure 3 for Figure 1 The diagram shows the optical path of the peripheral defocusing lens assembly.

[0025] Figure 4 This is a schematic diagram of the view into the eye provided in the first embodiment of the peripheral defocus lens assembly;

[0026] Figure 5 A three-dimensional structural diagram of the peripheral defocus lens assembly provided in the second embodiment;

[0027] Figure 6 A schematic diagram of the view entering the eye for the peripheral defocus display system provided in the second embodiment. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] like Figure 1 and Figure 5 As shown, the present invention provides a peripheral defocus lens assembly, including a base lens 103, a single image source 104, and multiple beam-splitting surfaces 102; wherein, the base lens 103 is used to transmit ambient light, and the two surfaces of the base lens 103 have different surface shapes to generate transmitted optical power for transmitted light; the single image source 104 is located at the edge of the base lens near the eye and is located away from the base lens 103; the multiple beam-splitting surfaces 102 are embedded in the base lens 103 and distributed in the base lens 103 at different tilt angles, and the central normal of the multiple beam-splitting surfaces 102 is inclined relative to the central normal of the base lens 103 toward the side where the image source 104 is located, and the number of beam-splitting surfaces 102 is preferably not less than 4. The illumination range of a single image source 104 covers all the beam splitters 102; each beam splitter 102 and the shared image source 104 form a defocus unit; the beam splitter 102 is used to reflect the light emitted by the image source 104, forming converging light rays that are directed toward the exit pupil position, and forming a defocus image 110 after entering the human eye; the multiple defocus images 110 formed by the reflection of multiple beam splitters are distributed in the peripheral field of view far from the visual axis.

[0031] The present invention also provides eyeglasses, including two sets of peripheral defocus lens assemblies and a frame. Each set of peripheral defocus lens assemblies includes a base lens 103, an image source 104, and multiple beam splitters 102. The two sets of peripheral defocus lens assemblies are respectively disposed in the frame corresponding to the left and right eyes. In each set of peripheral defocus lens assemblies, the base lens 103 is disposed in the frame, and a single image source 104 is disposed at the front of the temple near the lens. There is a certain distance between the image source 104 and the base lens 103 to ensure that the light from the image source 104 can completely cover all beam splitters 102.

[0032] The following description uses only a single peripheral defocus lens assembly installed in the glasses as an example. The other peripheral defocus lens assembly is arranged symmetrically with the above peripheral defocus lens assembly, and will not be described here. Figure 1 and Figure 6 Two embodiments of the peripheral defocus lens assembly provided in this application are given, wherein multiple beam-splitting surfaces 102 are distributed in the base lens 103 in two different configurations. The two specific embodiments are described below with reference to the accompanying drawings.

[0033] First Embodiment

[0034] like Figures 1 to 4 As shown, a rectangular coordinate system is established with the exit pupil position 101 of the basic lens as the origin, the visual axis direction as the positive z-axis, the horizontal leftward direction as the positive x-axis, and the vertical upward direction as the positive y-axis.

[0035] The base lens 103 is a circular lens with a diameter of approximately 80mm. The base lens 103 can be customized into different shapes to fit different frames. The base lens 103 is used to transmit ambient light and fix the eight beam splitters 102. The base lens 103 has a first curved surface (i.e., the near-eye side surface) near the exit pupil 101 and facing the human eye, and a second curved surface away from the exit pupil 101 and facing away from the human eye. The first and second curved surfaces have the same surface shape, or they may have different surface shapes, to produce transmittive power to accommodate different users' visual acuity. The central axis of the base lens 103 corresponds to the visual axis of the human eye passing through the center of the exit pupil. The central axis of the base lens 103 coincides with the central normal of the first and second curved surfaces.

[0036] Eight beam-splitting surfaces 102 are embedded inside the base lens 103 and are arranged in a single or multiple ring shape centered on the central axis of the base lens 103 (i.e., the position corresponding to the visual axis). Multiple beam-splitting surfaces can be staggered in adjacent ring layers or arranged correspondingly along the same radial direction. In this embodiment, two beam-splitting surfaces are arranged along the same radial direction, and the eight beam-splitting surfaces are divided into four groups and respectively arranged in the upper, lower, left, and right peripheral fields of view. The arrangement of the eight beam-splitting surfaces 102 avoids the central field of view of the base lens 103. In this distribution, the positions of the eight beam-splitting surfaces 102 are symmetrically distributed with respect to both the horizontal and vertical axes of the base lens 103. It can be understood that in other embodiments, the arrangement of the multiple beam-splitting surfaces 102 may be symmetrical only with respect to the horizontal and / or vertical axes of the base lens 103, without being centrally symmetrical about the central field of view.

[0037] Image source 104 employs a microdisplay, such as a high-brightness, high-resolution, miniaturized MicroOLED display. Alternatively, image source 104 employs a light source with a mask. Both image sources can provide defocused images to the human eye via beam splitter 102. Image source 104 allows for manual control of the defocused image content and a manual on / off switch to change the peripheral defocus mode, adapting to diverse application scenarios.

[0038] A single image source 104 is positioned at the edge of the base lens 103 near the eye and away from the base lens 103. The image source 104 provides an image source to all beam splitters 102, and the illumination range of the single image source 104 covers all beam splitters 102. The image source 104 can be positioned at the edge of the base lens 103 with its central normal parallel to the x-axis; or, preferably, the image source 104 can be positioned at the edge of the base lens 103 with its image source surface tilted towards the base lens 103, and the diffusion angle of the light emitted by the image source 104 is between 20° and 60°, so that the illumination range of the single image source 104 covers all beam splitters 102.

[0039] Each beam-splitting surface 102 and a shared image source 104 constitute a defocus unit. The beam-splitting surface 102 reflects the light emitted from the image source 104, forming converging rays that are directed towards the exit pupil position 101. The reflected rays, after converging through the exit pupil position 101, enter the wearer's eye on the side of the exit pupil position 101 furthest from the base lens 103, forming a defocused image in front of the wearer's retina 106. Figure 3 In the diagram, the dashed arc 105 represents the circular arc surface (i.e., the defocus surface) where multiple defocused images are located, such as... Figure 4 As shown, multiple defocused images 110 formed by multiple defocused units are distributed in the peripheral field of view far from the visual axis.

[0040] Once the structures of the base lens 103 and the beam splitter 102 are determined, the location of the image source 104 is also determined. The base lens 103 is approximately 10mm to 20mm from the human eye, typically 12mm. The image source 104 is positioned at the edge of the base lens 103 near the eye, and the light emitted by the image source 104 needs to completely cover the multiple beam splitters 102 within the base lens 103. Figure 3 Taking the direction as an example, the distance (i.e., vertical distance) between the image source 104 and the inner surface of the base lens 103 along the visual axis is about 15mm to 30mm, and the distance between the image source 104 and the visual axis is about 15mm to 25mm.

[0041] Eight beam-splitting surfaces 102 are embedded in the base lens 103, reflecting the light provided by the image source 104 according to a set transmission-reflection ratio and directing it toward the exit pupil position 101. The beam-splitting surfaces 102 are concave beam-splitting mirrors or concave beam-splitting films facing the human eye, and the transmission-reflection ratios of the eight beam-splitting surfaces 102 can be the same.

[0042] The optical surface of the beam-splitting surface 102 is a freeform surface, used to improve the image quality of the defocused image. Preferably, the optical surface of the beam-splitting surface 102 can be an XY polynomial freeform surface with an ellipsoidal base, and its optical description equation is expressed as follows:

[0043]

[0044] Where l1 and l2 represent the distances from any point on the ellipsoid to the two foci. It represents half the angle between the lines connecting any point on the ellipsoid to the two foci.

[0045] This surface type can be implemented as a user-defined surface in CODE V.

[0046] Table 1 shows the component parameters of each beam-splitting surface 102 in the first embodiment. The serial numbers of each beam-splitting surface are as follows: Figure 1 As shown, the coordinate axes for the tilt angle are as follows: Figure 2 As shown, the standard for tilt angle is 0° when it is parallel to the xOy plane. The Alpha tilt is rotated around the x-axis, and the Beta tilt is rotated around the y-axis. The clockwise rotation angle is negative, and the counterclockwise rotation angle is positive.

[0047] Table 1 Component parameters of each beam-splitting surface 102 in the first embodiment

[0048]

[0049] As can be seen from the above data, the surface parameters of the multiple beam-splitting surfaces are different, and their tilt angles are also different. The parameters of each beam-splitting surface need to be determined based on the surface curvature of the base lens, the desired defocus, and the distribution of the beam-splitting surfaces. The alpha tilt angles of the multiple beam-splitting surfaces 102 gradually decrease from top to bottom, and are between 0° and 30°. The beta tilt angles of the multiple beam-splitting surfaces are symmetrical about the vertical plane containing the visual axis (i.e., the yOz plane), and are between ±20°.

[0050] Table 2 gives the parameters of the remaining optical elements in the first embodiment, wherein the tilt angle of the base lens 103 is 0° when it is parallel to the xOy plane, the clockwise rotation angle is negative, and the counterclockwise rotation angle is positive.

[0051] Table 2. Parameters of the remaining parts of the first embodiment

[0052]

[0053] Eight beam-splitting surfaces 102 are embedded inside the base lens 103. The optical path diagram of the multiple defocusing units is shown below. Figure 3As shown, ambient light is transmitted and imaged through the second curved surface of the base lens 103 away from the exit pupil and the first curved surface near the exit pupil. The optical power of the base lens 103 can be customized according to the human eye's visual acuity, allowing the human eye to clearly see the external environment. The image source 104 and multiple beam-splitting surfaces 102, combined with the first curved surface of the base lens 103, achieve defocus imaging in the direction away from the lens at the exit pupil. The image source 104 is located at the edge of the lens 103 and can be fixed in conjunction with the eyeglass frame. In this embodiment, during defocus imaging, the image source 104 emits light towards the base lens 103. The light is transmitted through the first curved surface of the base lens 103 near the exit pupil and reaches each beam-splitting surface 102. Since the beam-splitting surface 102 has a beam-splitting function and is concave towards the human eye, the light is reflected by the beam-splitting surface 102 to the first curved surface of the base lens 103. After being transmitted through the first curved surface of the base lens 103, it is reflected at a certain tilt angle relative to the central normal of the base lens 103 to the exit pupil position 101. Defocus imaging is performed on the side of the exit pupil position away from the lens with a predetermined defocus degree. In the above process, the light is reflected by a single beam-splitting surface 102 to form a single converging light beam, thereby achieving defocus imaging in the human eye. Furthermore, the light reflected by all beam-splitting surfaces 102 is directed towards the exit pupil position at different angles, and the multiple light beams are converged as a whole, thus achieving defocus imaging around the human eye's retina.

[0054] Due to the aforementioned defocusing effect, when the human eye is positioned at the exit pupil, the light emitted from the image source 104, after being reflected by the beam splitter 102 and directed towards the exit pupil 101, is focused by the human eye onto the defocus surface 105 located in front of the retina 106. This causes defocus stimulation to the peripheral visual field of the human eye. Because the human eye has a defocus accommodation mechanism, the defocus stimulation causes the eye to automatically compress the axial length to ensure that the retina 106 moves closer to the defocus surface 105, thereby inhibiting axial elongation and achieving the purpose of myopia control. Preferably, the defocus power of the defocused image can also be adjusted by adjusting the distance between the image source 104 and the beam splitter 102, or by adjusting the specific surface parameters of the beam splitter 102, to adapt to the defocus requirements of different visual acuity eyes and generate effective defocus stimulation.

[0055] like Figure 4 The image shown is the display screen observed by the human eye through the aforementioned defocus display system. In the peripheral area of ​​the display screen, eight defocused images projected by the defocus units are displayed, each corresponding to... Figure 2 The glasses show eight beam-splitting surfaces. Through these glasses, the user's eye is stimulated by eight defocused images at the periphery of the screen while observing the external environment normally, thus achieving the functional purpose of myopia protection.

[0056] Second Embodiment

[0057] The peripheral defocus lens assembly provided in the second embodiment is similar to that in the first embodiment, wherein the optical path principle used by each defocus optical path is the same as that in the first embodiment. The difference lies in the distribution of the multiple beam-splitting surfaces 102 in the base lens 103 in this embodiment.

[0058] like Figure 5 The peripheral defocus lens assembly shown includes a base lens 103 and multiple beam splitters 102. The base lens 103 is a circular lens with a diameter of approximately 80mm. The base lens 103 can be customized into different shapes to fit different frames. The base lens 103 is used to transmit ambient light and fix the 16 defocus units. The base lens 103 has a first curved surface concave towards the exit pupil position 101 and a second curved surface distant from the exit pupil position. The first and second curved surfaces of the base lens 103 have the same surface shape, or the first and second curved surfaces of the base lens 103 have different surface shapes to produce transmitted optical power, adapting to the visual acuity of different users. The center of the base lens 103 corresponds to the visual axis of the human eye passing through the center of the exit pupil.

[0059] In this embodiment, 16 beam-splitting surfaces 102 are embedded within the base lens 103 and arranged in a ring around the visual axis in the peripheral field of view. The 16 beam-splitting surfaces 102 are discretely distributed within the base lens 103 relative to its inner surface. The positional distribution and surface design of the 16 beam-splitting surfaces 102 are similar to the arrangement of the 8 beam-splitting surfaces 102 in the first embodiment. In this embodiment, the 16 beam-splitting surfaces are evenly distributed in eight groups around the central field of view in the peripheral field of view, with two beam-splitting surfaces in each group arranged along the same radial direction. The 16 beam-splitting surfaces 102 are arranged in a ring around the central field of view (i.e., the position corresponding to the visual axis) of the base lens 103 and are symmetrically distributed relative to the horizontal and vertical midlines of the base lens 103. Compared to the first embodiment, by increasing the number of beam-splitting surfaces, the number of defocused images is increased, thereby enhancing the defocus stimulation to the human eye.

[0060] The optical surface of the beam-splitting surface 102 is a freeform surface, used to improve the image quality of the defocused image. Preferably, it is an XY polynomial freeform surface with an ellipsoidal base, and its optical description equation is expressed as follows:

[0061]

[0062] Where l1 and l2 represent the distances from any point on the ellipsoid to the two foci. It represents half the angle between the lines connecting any point on the ellipsoid to the two foci.

[0063] Table 3 shows the component parameter ranges for each beam-splitting surface 102 in the second embodiment. The tilt angle standard is the same as in the first embodiment, with 0° defined as parallel to the xOy plane. The Alpha tilt is rotated around the x-axis, and the Beta tilt is rotated around the y-axis. Clockwise rotation is negative, and counterclockwise rotation is positive. The distribution pattern and angle range of the Alpha and Beta tilt angles of the multiple beam-splitting surfaces 102 are the same as in the first embodiment.

[0064] Table 3 Parameters of some optical lenses in the second embodiment

[0065]

[0066] In this embodiment, the image source 104 employs a microdisplay, such as a high-brightness, high-resolution, miniaturized MicroOLED display. Alternatively, the image source 104 employs a light source with a mask. Both of these image sources can provide image sources for the 16 beam-splitting surfaces. The image source 104 can be manually controlled to control the defocused image content and to manually control its on / off switch, thereby switching the peripheral defocus mode to adapt to diverse application scenarios.

[0067] Image source 104 provides light for defocus imaging to 16 defocus units 102. Each beam splitter 102 and the shared image source 104 constitute a defocus unit. The imaging principle of each defocus unit and the overall imaging principle of all defocus units are the same as in the first embodiment, and will not be described again here.

[0068] like Figure 6 The image shown is the display screen as observed by the human eye through the aforementioned defocus display system. In this display screen, 16 defocused images projected by defocus units are displayed around the central area, each corresponding to... Figure 5 The glasses show 16 beam-splitting surfaces. Through these glasses, while the user's eyes are observing the external environment normally, they are stimulated by defocused images at 16 defocused positions around the periphery of the screen to correct myopia, thus achieving the functional purpose of myopia protection.

[0069] In summary, the peripheral defocus lens assembly and glasses provided by this invention include a base lens for viewing ambient light and multiple defocus units. The base lens has a certain optical power to meet the needs of users with different visual acuity for clearly observing the external environment. Multiple defocus units share an image source and each uses a beam splitter to reflect the light from the image source to achieve defocus imaging, providing a defocused image in the peripheral field of vision, thus achieving peripheral defocus stimulation and preventing myopia. The peripheral defocus lens assembly and glasses can be customized with specific surface parameters for the base lens and beam splitter according to the wearer's visual acuity, thereby accurately correcting myopia refractive errors. While ensuring a clear visual image, the defocused image is superimposed on the real environment image in an augmented reality manner, without affecting the perspective direction of the real environment image, and providing a wide field of vision. Furthermore, the image source can be manually controlled to start and stop as needed, adapting to diverse application environments where defocus is required or not.

[0070] The foregoing has provided a detailed description of a peripheral defocus lens assembly and eyeglasses provided by this invention. Any obvious modifications made by those skilled in the art without departing from the essence of this invention will constitute an infringement of the patent rights of this invention and will incur corresponding legal liability.

Claims

1. A peripheral defocus lens assembly for eyeglasses comprising a frame and temples, characterized in that... include: A base lens, wherein the front and rear surfaces of the base lens have different surface shapes to produce a transmittance power; A single image source is positioned at the edge of the lens near the eye, and away from the base lens setting. Multiple beam-splitting surfaces are embedded in the base lens and distributed within the base lens at different tilt angles. The central normals of the multiple beam-splitting surfaces are tilted relative to the central normals of the lens towards the image source. The alpha tilt angles of the multiple beam-splitting surfaces gradually decrease from top to bottom, and the beta tilt angles of the multiple beam-splitting surfaces are symmetrical about the vertical plane containing the visual axis. The xOy plane is perpendicular to the visual axis, the x-axis is the horizontal axis, and the y-axis is the vertical axis. The standard for the tilt angle is 0° when parallel to the xOy plane. The alpha tilt rotates about the x-axis, and the beta tilt rotates about the y-axis. Clockwise rotation is negative, and counterclockwise rotation is positive. The beam-splitting surface has a freeform surface on an ellipsoidal base; the optical surface of the beam-splitting surface has an XY polynomial freeform surface on an ellipsoidal base, and the optical description equation is expressed as: in, l 1 and l 2 represents the distance from any point on the ellipsoid to the two foci. φ It represents half the angle between the lines connecting any point on the ellipsoid to the two foci; The base lens is set in the frame, and the single image source is set at the front of the temple near the base lens. There is a certain distance between the image source and the base lens so that the light illumination range of the single image source covers all the beam splitters. The beam splitters are used to reflect the light emitted by the image source to form converging light rays that are directed toward the exit pupil and form a defocused image after entering the human eye. The multiple defocused images formed by the reflection of multiple beam splitters are distributed in the peripheral field of view far away from the visual axis.

2. The peripheral defocus lens assembly as described in claim 1, characterized in that: The image source is tilted toward the base lens, and the diffusion angle of the light emitted by the image source is between 20° and 60°.

3. The peripheral defocus lens assembly as described in claim 1, characterized in that: The beam-splitting surface is concave towards the human eye.

4. The peripheral defocus lens assembly as described in claim 1, characterized in that: The alpha tilt angle of the plurality of beam-splitting surfaces is between 0° and 30°, and the beta tilt angle of the plurality of beam-splitting surfaces is between ±20°.

5. The peripheral defocus lens assembly as described in claim 1, characterized in that: The positions of the multiple beam-splitting surfaces are arranged in a ring around the center of the base lens.

6. The peripheral defocus lens assembly as described in claim 1, characterized in that: The positions of the multiple beam-splitting surfaces are symmetrically distributed relative to the horizontal and / or vertical lines of the base lens.

7. A pair of eyeglasses, comprising a frame, characterized in that... It includes two sets of peripheral defocus lens assemblies as described in any one of claims 1-6, wherein in each set of peripheral defocus lens assemblies, the base lens is disposed in the frame, the image source is disposed at the front of the temple near the base lens, and the vertical distance from the image source to the inner surface of the base lens is between 15mm and 30mm.

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