Peripheral out-of-focus lens assembly and glasses

Abstract

The invention discloses a peripheral out-of-focus lens assembly, and the assembly comprises a basic lens which generates perspective focal power for perspective light; the single image source is arranged at the edge position of the near-eye side of the basic lens and is far away from the basic lens; the plurality of light splitting surfaces are embedded into the basic lens and are distributed in the basic lens at different inclination angles, and the central normal lines of the plurality of light splitting surfaces are inclined to the side where the image source is located relative to the central normal line of the lens; the light irradiation range of a single image source covers all the light splitting surfaces; each light splitting surface and the shared image source form an out-of-focus unit, each light splitting surface is used for reflecting light rays emitted by the image source to form convergent light rays, the convergent light rays are emitted to an exit pupil position, and an out-of-focus image is formed after the convergent light rays enter human eyes; a plurality of out-of-focus images formed by reflection of the plurality of light splitting surfaces are respectively distributed in a peripheral view field. The invention further discloses glasses comprising the peripheral defocus lens assembly, and the glasses are used for achieving defocus stimulation, inhibiting eye axis growth and achieving the purpose of myopia prevention and control.

Description

Technical Field

[0001] The invention relates to a peripheral defocus lens assembly and also to a pair of glasses. Background Art

[0002] In recent years, the incidence of myopia in my country has remained high, and myopia has become a public health issue that cannot be ignored. In today's society, people live a fast-paced life, have great pressure from study and work, and use electronic products frequently. Under such circumstances, myopia prevention and control, especially for adolescents, is becoming increasingly important. The further development of myopia prevention and control methods based on defocus theory has provided a new direction for myopia prevention and control methods. At present, the commonly used myopia prevention and control lenses are defocus lenses. Defocus lenses can make the image of the central field of view fall on the retina, thereby completing its refractive correction; and make the peripheral field of view image fall in front of the retina, while ensuring clear visual imaging, inhibiting the growth of the eye axis and delaying the progression of myopia. Summary of the invention

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

[0004] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0005] A peripheral defocus lens assembly, comprising:

[0006] A base lens, wherein the front surface and the back surface of the base lens have different surface shapes so as to generate perspective optical power for perspective light;

[0007] A single image source, located at the edge of one side of the lens and away from the base lens arrangement, and

[0008] A plurality of light splitting surfaces are embedded in the base lens and distributed in the base lens at different inclination angles, and the central normals of the plurality of light splitting surfaces are inclined toward 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 splitting surfaces; the splitting surfaces are used to reflect the light emitted by the image source to form convergent light that is directed to the exit pupil position and forms a defocused image after entering the human eye; the multiple defocused images formed by reflection from multiple splitting surfaces are respectively distributed in the peripheral field of view far away from the visual axis.

[0010] Preferably, the image source is arranged to be inclined toward 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 light splitting surface is a free-form surface.

[0012] Preferably, the optical surface shape of the beam splitting surface is an XY polynomial free-form surface based on an ellipsoidal surface, and its optical description equation is expressed as:

[0013]

[0014] Among them, l1 and l2 represent the distance from any point on the ellipsoid to the two foci. It represents half of the angle between any point on the ellipsoid and the line connecting the two foci.

[0015] Preferably, the light splitting surface is concave toward 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 bilaterally symmetrical with the vertical plane where the visual axis is located as the center.

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

[0018] Preferably, the positions of the plurality of beam splitting surfaces are distributed in a ring shape 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 axis and / or the vertical axis of the base lens.

[0020] A pair of glasses, comprising a frame and two groups of the above-mentioned peripheral defocus lens assemblies, which are arranged corresponding to the left eye and the right eye respectively, wherein in each group of peripheral defocus lens assemblies, the base lens is arranged in the frame, the image source is arranged at a position close to the base lens at the front part of the temple, and the vertical distance from the image source to the inner surface of the base lens is between 15 mm and 30 mm.

[0021] The glasses provided by the present invention include peripheral defocus lens assemblies respectively arranged for the left eye and the right eye, each group of peripheral defocus lens assemblies includes a base lens, a plurality of dichroic surfaces embedded in the base lens, and a single image source arranged outside the base lens and located on the near-eye side. Each group of peripheral defocus lens assemblies realizes the separate reflection of the light of the single image source by the plurality of dichroic surfaces by embedding the plurality of dichroic surfaces in the base lens, combined with the single image source arranged outside the lens and located on the temple, so as to form a plurality of defocused images in the peripheral visual field of the human eye, realize defocused stimulation, inhibit the growth of the eye axis, and achieve the purpose of myopia prevention and control. The above-mentioned peripheral defocus lens assembly and glasses can formulate specific surface parameters of the basic lens and the dichroic surface according to the wearer's vision, so as to accurately correct myopia refraction, and superimpose the defocused image on the real environment image in an augmented reality manner under the premise of ensuring the clarity of the visual image, without affecting the real environment image in the perspective direction. In addition, the image source can be started and shut down by artificial control according to actual needs, and can adapt to diversified application environments that require defocus and do not require defocus. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 for Figure 1 A schematic diagram of the arrangement of the light splitting surface in the peripheral defocus lens assembly shown;

[0024] Figure 3 for Figure 1 The optical path schematic diagram of the peripheral defocus lens assembly shown;

[0025] Figure 4 A schematic diagram of an eye-viewing image of a peripheral defocus lens assembly provided in the first embodiment;

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

[0027] Figure 6 A schematic diagram of an eye-catching image of a peripheral defocus display system provided in the second embodiment. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] like Figure 1 and Figure 5 As shown, the present invention provides a peripheral defocus lens assembly, comprising a base lens 103, a single image source 104 and a plurality of splitter surfaces 102; wherein the base lens 103 is used to see through ambient light, and there are surface shape differences between the two surfaces of the base lens 103 to generate perspective optical focal length for the perspective light; the single image source 104 is arranged at the edge position of the near-eye side of the base lens and away from the base lens 103; the plurality of splitter surfaces 102 are embedded in the base lens 103 and distributed in the base lens 103 at different inclination angles, the central normals of the plurality of splitter surfaces 102 are inclined toward the side where the image source 104 is located relative to the central normal of the base lens 103, and the number of the splitter surfaces 102 is preferably not less than 4. The light irradiation range of a single image source 104 covers all the dichroic surfaces 102; each dichroic surface 102 and the common image source 104 respectively constitute a defocusing unit; the dichroic surface 102 is used to reflect the light emitted by the image source 104, form converging light and emit it to the exit pupil position, and form a defocused image 110 after entering the human eye; the multiple defocused images 110 correspondingly formed by reflection from multiple dichroic surfaces are respectively distributed in the peripheral field of view far away from the visual axis.

[0031] The present invention also provides a pair of glasses, including two groups of peripheral defocus lens assemblies and a frame, each group of peripheral defocus lens assemblies includes a base lens 103, an image source 104 and multiple splitting surfaces 102, and the two groups of peripheral defocus lens assemblies are arranged in the frame corresponding to the left eye and the right eye respectively; wherein, in each group of peripheral defocus lens assemblies, the base lens 103 is arranged in the frame, and the single image source 104 is arranged at the front part of the temple close to the lens, and there is a certain distance between the image source 104 and the base lens 103 to ensure that the light of the image source 104 can completely cover all the splitting surfaces 102.

[0032] The following description only takes a single peripheral defocus lens assembly arranged in the glasses as an example, and another peripheral defocus lens assembly is symmetrically arranged 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 by the present application are respectively given, wherein the plurality of light splitting surfaces 102 are distributed in the base lens 103 in two different distribution modes. The following describes two specific embodiments in conjunction with 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 base lens as the origin, the visual axis direction as the positive direction of the z-axis, the horizontal left direction as the positive direction of the x-axis, and the vertical upward direction as the positive direction of the y-axis.

[0035] The base lens 103 is a circular lens with a diameter of about 80 mm. The base lens 103 can be customized into different shapes according to actual application conditions so as to adapt to the frame. The base lens 103 is used to see through the real ambient light and fix the 8 dichroic surfaces 102. The base lens 103 has a first curved surface (i.e., near-eye side surface) close to the exit pupil position 101 and facing the human eye and a second curved surface away from the exit pupil position 101 and facing away from the human eye. The first curved surface and the second curved surface have the same surface shape, or the first curved surface and the second curved surface have a surface shape difference to generate perspective optical focal length for adapting to the human eye vision of different users. 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, and the central axis of the base lens 103 coincides with the central normal of the first curved surface and the central normal of the second curved surface.

[0036] The eight beam splitters 102 are embedded in the base lens 103, and are distributed in a single or multi-layer ring shape with the central axis of the base lens 103 (i.e., the position corresponding to the visual axis) as the center; the multiple beam splitters can be staggered in two adjacent ring layers, or can be arranged correspondingly along the same radial direction; in this embodiment, two beam splitters are arranged along the same radial direction, and the eight beam splitters are divided into four groups and arranged in the upper, lower, left and right peripheral fields of view respectively; the eight beam splitters 102 are arranged to avoid the central field of view of the base lens 103. In this distribution mode, the setting positions of the eight beam splitters 102 are symmetrically distributed relative to the horizontal axis and the vertical axis of the base lens 103. It can be understood that in other embodiments, the setting mode of the multiple beam splitters 102 can be symmetrically distributed only relative to the horizontal axis and / or the vertical axis of the base lens 103, and not centrally symmetrical about the central field of view.

[0037] The image source 104 uses a micro display, for example, a high-brightness, high-resolution, miniaturized Micro OLED display. Alternatively, the image source 104 uses a light source with a mask. Both of the above image sources can provide a defocused image to the human eye through the light splitting surface 102. The image source 104 can manually control the defocused image content and the switch, thereby switching the peripheral defocus mode to adapt to diversified application scenarios.

[0038] A single image source 104 is arranged at the edge of the near-eye side of the basic lens 103 and is arranged away from the basic lens 103. The image source 104 is used to provide an image source to all the beam splitting surfaces 102, and the light irradiation range of the single image source 104 covers all the beam splitting surfaces 102. The image source 104 can be arranged at the edge of the basic lens 103 in a manner that the central normal is parallel to the x-axis; or, preferably, the image source 104 can be arranged at the edge of the basic lens 103 in a manner that the image source surface is tilted toward the basic lens 103, and the diffusion angle of the light emitted by the image source 104 is between 20° and 60°, so that the light irradiation range of the single image source 104 covers all the beam splitting surfaces 102.

[0039] Each beam splitter 102 and the shared image source 104 form a defocusing unit. The beam splitter 102 is used to reflect the light emitted by the image source 104, forming a converging light beam that is directed toward the exit pupil position 101. After the reflected light beam passes through the exit pupil position 101 in a converging form, it enters the human eye located at the side of the exit pupil position 101 away from the base lens 103, and forms a defocused image in front of the wearer's retina 106. Figure 3 In FIG. 1 , the arc 105 represented by the dotted line represents the arc surface (i.e., the defocused surface) where the multiple defocused images are located. Figure 4 As shown, a plurality of defocused images 110 formed by a plurality of defocusing units are respectively distributed in peripheral viewing fields far away from the visual axis.

[0040] When the structures of the base lens 103 and the light splitting unit 102 are determined, the location of the image source 104 is determined. The distance between the base lens 103 and the human eye is about 10 mm to 20 mm, generally 12 mm. The image source 104 is set 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 light splitting surfaces 102 inside the base lens 103. Figure 3 Taking the direction as an example, the distance between the image source 104 and the inner surface of the base lens 103 along the visual axis direction (ie, the vertical distance) is approximately 15 mm to 30 mm, and the distance between the image source 104 and the visual axis is approximately 15 mm to 25 mm.

[0041] Eight beam splitters 102 are embedded in the base lens 103, and reflect the light provided by the image source 104 according to the set transmittance-reflection ratio and emit it toward the exit pupil position 101. The beam splitters 102 are concave beam splitters or concave beam splitters that are concave toward the human eye, and the transmittance-reflection ratios of the eight beam splitters 102 can be the same.

[0042] The optical surface of the beam splitter 102 is a free-form surface, which is used to improve the image quality of the defocused image. Preferably, the optical surface of the beam splitter 102 can be an XY polynomial free-form surface based on an ellipsoidal surface, and its optical description equation is expressed as:

[0043]

[0044] Among them, l1 and l2 represent the distance from any point on the ellipsoid to the two foci. It represents half of the angle between any point on the ellipsoid and the line connecting 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 light splitting surface 102 in the first embodiment. The serial numbers of each light splitting surface are as follows: Figure 1 As shown, the coordinate axis of the tilt angle is Figure 2 As shown, the standard tilt angle is 0° when parallel to the xOy plane, where the Alpha tilt uses the x-axis as the rotation axis, the Beta tilt uses the y-axis as the rotation axis, the clockwise rotation angle is negative, and the counterclockwise rotation angle is positive.

[0047] Table 1 Component parameters of each light splitting surface 102 of the first embodiment

[0048]

[0049] It can be seen from the above data that the surface parameters of multiple beam splitters are different, and the inclination angles of multiple beam splitters are also different. It is necessary to determine the parameters of each beam splitter according to the surface curvature of the base lens, the defocus degree to be achieved, and the distribution position of the beam splitters. The Alpha inclination angles of the multiple beam splitters 102 gradually decrease from top to bottom, and the Alpha inclination angles of the multiple beam splitters are between 0° and 30°; the Beta inclination angles of the multiple beam splitters are symmetrical with the vertical plane (i.e., the yOz plane) where the visual axis is located as the center, and the Beta inclination angles of the multiple beam splitters are between ±20°.

[0050] Table 2 shows the parameters of the other 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, and the clockwise rotation angle is negative, while the counterclockwise rotation angle is positive.

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

[0052]

[0053] The eight light splitting surfaces 102 are embedded in the base lens 103. The optical path principle diagram of the multiple defocusing units is as follows: Figure 3As shown. The ambient light is transmitted through the second curved surface of the basic lens 103 away from the exit pupil position and the first curved surface close to the exit pupil position to form an image. The optical power of the basic lens 103 can be customized according to the visual acuity of the human eye, so that the human eye can clearly see the external environment. The image source 104, the multiple splitting surfaces 102 and the first curved surface of the basic lens 103 are combined to realize defocused imaging in the direction away from the lens at the exit pupil position. The image source 104 is set at the edge of the lens 103 and can be combined with the glasses frame to complete the fixation. During defocus imaging in this embodiment, the image source 104 emits light toward the base lens 103, and the light is transmitted through the first curved surface of the base lens 103 near the exit pupil position and reaches each beam splitter surface 102. Since the beam splitter surface 102 has a beam splitting effect and is concave toward the human eye, the light is reflected from the beam splitter surface 102 to the first curved surface of the base lens 103, and after being transmitted through the first curved surface of the base lens 103, it is reflected to the exit pupil position 101 at a certain inclination angle relative to the central normal of the base lens 103, and defocus imaging is performed at a predetermined defocus degree on the side of the exit pupil position away from the lens. In the above process, after the light is reflected by a single beam splitter surface 102, a single beam of converging light is formed to realize defocus imaging in the human eye; and the light reflected by all the beam splitters 102 is emitted to the exit pupil position at different angles, and the multiple beams of light are in a convergent state as a whole, thereby realizing defocus imaging around the retina of the human eye.

[0054] Due to the above-mentioned defocusing effect, when the human eye is placed at the exit pupil position, the light emitted by the image source 104, after being reflected by the beam splitter 102 toward the exit pupil position 101, is converged by the human eye to the defocus plane 105 located in front of the retina 106, causing the peripheral field of view of the human eye to be stimulated by defocusing. Since the human eye has a defocusing adjustment mechanism, the defocusing stimulation will cause the human eye to automatically compress the eye axis to ensure that the retina 106 approaches the defocusing plane 105, thereby inhibiting the growth of the eye axis and achieving the purpose of myopia prevention and control. Preferably, the defocusing optical power of the defocused image can also be adjusted by adjusting the distance between the image source 104 and the beam splitter 102, or adjusting the specific surface parameters of the beam splitter 102, so as to adapt to the requirements of different vision for the defocusing degree of human eyes and produce effective defocusing stimulation.

[0055] like Figure 4 The picture shown is a display picture observed by human eyes through the above-mentioned defocus display system, wherein 8 defocus images projected by the defocus unit are displayed in the peripheral area of ​​the display picture, corresponding to Figure 2 Through the glasses, the user's eyes are stimulated by 8 out-of-focus images around the screen while observing the external environment normally, so as to achieve 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 is that in this embodiment, the distribution of the multiple beam splitting surfaces 102 in the base lens 103 is different.

[0058] like Figure 5 The peripheral defocus lens assembly shown includes: a base lens 103 and a plurality of beam splitting surfaces 102. The base lens 103 is a circular lens with a diameter of about 80 mm, and the base lens 103 can be customized into different shapes according to actual application conditions so as to adapt to the frame. The base lens 103 is used to see through real ambient light and fix 16 defocus units; the base lens 103 has a first curved surface concave toward the exit pupil position 101, and has a second curved surface away from the exit pupil position; the first curved surface of the base lens 103 is consistent with the second curved surface, or the first curved surface and the second curved surface of the base lens 103 have a surface shape difference to generate perspective optical focal length, which is used to adapt to the human eye vision 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 in the base lens 103 and are distributed in a ring shape around the visual axis in the peripheral visual field. The 16 beam splitting surfaces 102 are discretely distributed inside the lens 103 relative to the inner surface of the base lens 103. The position distribution and surface design of the 16 beam splitting surfaces 102 are similar to the setting of the 8 beam splitting surfaces 102 in the first embodiment. In this embodiment, the 16 beam splitting surfaces are divided into eight groups and evenly distributed in the peripheral visual field around the central visual field, wherein the two beam splitting surfaces in each group of beam splitting surfaces are arranged along the same radial direction. The 16 beam splitting surfaces 102 are arranged in a ring shape around the central visual field of the base lens 103 (i.e., the position corresponding to the visual axis), and are symmetrically distributed relative to the horizontal midline and the vertical midline of the base lens 103. Compared with 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 splitter 102 is a free-form surface, which is used to improve the quality of the defocused image. Preferably, an XY polynomial free-form surface based on an ellipsoidal surface is used, and its optical description equation is expressed as:

[0061]

[0062] Among them, l1 and l2 represent the distance from any point on the ellipsoid to the two foci. It represents half of the angle between any point on the ellipsoid and the line connecting the two foci.

[0063] Table 3 shows the component parameter ranges of each beam splitter 102 in the second embodiment, wherein the tilt angle standard is the same as that of the first embodiment, with 0° being parallel to the xOy plane, Alpha tilting with the x-axis as the rotation axis, Beta tilting with the y-axis as the rotation axis, clockwise rotation angles being negative, and counterclockwise rotation angles being positive. The distribution law and angle range of the Alpha tilt angles and Beta tilt angles of the multiple beam splitters 102 are the same as those of the first embodiment.

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

[0065]

[0066] In this embodiment, the image source 104 is a micro display, for example, a high-brightness, high-resolution, miniaturized Micro OLED display. Alternatively, the image source 104 is a light source with a mask. Both of the above image sources can provide image sources for 16 split light planes. The image source 104 can manually control the defocused image content and the switch, thereby switching the peripheral defocus mode to adapt to diversified application scenarios.

[0067] The image source 104 provides light for defocused imaging for the 16 defocusing units 102. Each light splitting surface 102 and the shared image source 104 constitute a defocusing unit. The imaging principle of each defocusing unit and the overall imaging principle of all defocusing units are the same as those in the first embodiment, and will not be described in detail here.

[0068] like Figure 6 The picture shown is a display picture observed by human eyes through the above-mentioned defocus display system, wherein 16 defocus images projected by the defocus unit are displayed around the central area of ​​the display picture, corresponding to Figure 5 Through the glasses, the user's eyes are stimulated by the defocused images of 16 defocused positions around the screen while observing the external environment normally, so as to correct myopia and achieve the functional purpose of myopia protection.

[0069] In summary, the peripheral defocus lens assembly and glasses provided by the present invention include a basic lens for seeing through ambient light and a plurality of defocus units. The basic lens has a certain optical power, which can meet the needs of users with different vision to clearly observe the external environment. Multiple defocus units share an image source, and use a spectroscopic surface to reflect the light of the image source respectively to achieve defocused imaging, which is used to provide defocused images around the human eye's field of vision, achieve peripheral defocus stimulation, and achieve the purpose of preventing myopia. The peripheral defocus lens assembly and glasses can formulate specific surface parameters of the basic lens and the spectroscopic surface according to the wearer's vision, so as to accurately correct myopia refraction, and superimpose the defocused image on the real environment image in an augmented reality manner while ensuring the clarity of the visual image, without affecting the real environment image in the perspective direction, and with a large field of view. In addition, the image source can be started and shut down by artificial control according to actual needs, and can adapt to a variety of application environments that require defocus or do not require defocus.

[0070] The above is a detailed description of a peripheral defocus lens assembly and glasses provided by the present invention. For those skilled in the art, any obvious changes made to it without departing from the essence of the present invention will constitute an infringement of the patent right of the present invention and will bear corresponding legal liabilities.

Claims

1. A peripheral defocus lens assembly, characterized in that include: A base lens, wherein the front surface and the back surface of the base lens have different surface shapes to generate perspective optical power; A single image source, located at the edge of the lens near the eye and away from the base lens, and A plurality of light splitting surfaces are embedded in the base lens and distributed in the base lens at different inclination angles, and the central normals of the plurality of light splitting surfaces are inclined toward the side where the image source is located relative to the central normal of the lens; The light irradiation range of the single image source covers all the splitting surfaces; the splitting surfaces are used to reflect the light emitted by the image source to form convergent light that is directed to the exit pupil position and forms a defocused image after entering the human eye; the multiple defocused images formed by reflection from multiple splitting surfaces are respectively distributed in the peripheral field of view far away from the visual axis.

2. The peripheral defocus lens assembly according to claim 1, wherein: The image source is disposed obliquely 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 according to claim 1, wherein: The surface shape of the light splitting surface is a free-form surface.

4. The peripheral defocus lens assembly according to claim 3, wherein: The optical surface shape of the beam splitter is an XY polynomial free-form surface based on an ellipsoidal surface, and the optical description equation is expressed as: Among them, l1 and l2 represent the distance from any point on the ellipsoid to the two foci. It represents half of the angle between any point on the ellipsoid and the line connecting the two foci.

5. The peripheral defocus lens assembly according to claim 1, wherein: The light splitting surface is concave toward the human eye.

6. The peripheral defocus lens assembly according to claim 1, wherein: 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 bilaterally symmetrical with the vertical plane where the visual axis is located as the center.

7. The peripheral defocus lens assembly according to claim 6, wherein: The Alpha tilt angles of the plurality of the splitter surfaces are between 0° and 30°, and the Beta tilt angles of the plurality of the splitter surfaces are between ±20°.

8. The peripheral defocus lens assembly according to claim 1, wherein: The positions of the plurality of light splitting surfaces are distributed in a ring shape around the center of the base lens.

9. The peripheral defocus lens assembly according to claim 1, wherein: The positions of the plurality of light splitting surfaces are symmetrically distributed relative to the horizontal line and / or the vertical line of the base lens.

10. A pair of glasses, comprising a frame, characterized in that It comprises two groups of peripheral defocus lens assemblies as described in any one of claims 1 to 9, wherein in each group of peripheral defocus lens assemblies, the base lens is arranged in a frame, the image source is arranged at a position close to the base lens at the front of the temple, and the vertical distance from the image source to the inner surface of the base lens is between 15 mm and 30 mm.

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