Multifaceted optical lens, lens array, optical module and optical communication equipment

Abstract

The present application discloses a multifaceted optical lens, a lens array, an optical module and an optical communication device. The multifaceted optical lens includes an optically effective portion and a supporting portion. The optically effective portion includes a first area and a second area arranged around the periphery of the first area. The first area is a convex surface at the near optical axis, and the second area is a concave surface at the near optical axis. The supporting portion is arranged around the periphery of the optically effective portion. The supporting portion includes a third area, and the third area is arranged around the periphery of the second area. The multifaceted optical lens, lens array, optical module and optical communication device provided by the present application can reduce the diameter of the light spot without affecting the center quality of the light spot focused by the multifaceted optical lens, and can weaken the edge stray noise of the light spot, which is beneficial to improving the transmission quality of the multifaceted optical lens and reducing the size of the multifaceted optical lens, thereby helping to improve the optical performance of the multifaceted optical lens and miniaturize the multifaceted optical lens.

Description

Technical Field

[0001] The present application relates to the field of optical communication technology, and in particular to a multi-faceted optical lens, a lens array, an optical module and an optical communication device. Background Art

[0002] With the growth of the Internet system and the increase in connected devices, the data information generated by the Internet is growing exponentially, which has led to the rapid development of optical communication technology with greater transmission bandwidth and capacity, lower transmission loss, stronger anti-electromagnetic interference ability and higher transmission quality. Optical communication has been widely used in data centers, telecommunications networks, fiber-optic broadband, automotive electronics and industrial manufacturing industries due to its excellent performance. Optical lenses play a vital role in optical communication, and can ensure efficient, stable and high-quality transmission of optical communication through technical means such as focusing and beam shaping.

[0003] In order to adapt to the development needs of modern communication networks, improve the integration of equipment and reduce energy consumption, higher requirements are put forward for the miniaturization, transmission rate and transmission quality of optical communication equipment. However, in the related art, when transmitting optical signals through optical lenses in optical communication equipment, the diameter of the light spot is large, and the energy density of the light at the edge of the light spot is obviously dispersed, which is not conducive to the miniaturization of optical communication equipment; and when the transmission rate of the optical signal is increased, the dispersed light is easy to form stray noise, which in turn affects the transmission quality of the optical signal. Summary of the invention

[0004] The embodiments of the present application disclose a multi-faceted optical lens, a lens array, an optical module and an optical communication device, which can achieve a miniaturized design while taking into account the transmission quality of optical signals.

[0005] In order to achieve the above objectives, in a first aspect, the embodiments of the present application disclose a multi-faceted optical lens, comprising:

[0006] an optically effective portion, the optically effective portion comprising a first region and a second region arranged around the first region, the first region being a convex surface at the low beam axis, and the second region being a concave surface at the low beam axis; and

[0007] The supporting portion is arranged at the periphery of the optically effective portion, and the supporting portion includes a third area, and the third area is arranged around the periphery of the second area.

[0008] By setting the first area and the second area in the optically effective part, it is possible to reduce the diameter of the light spot by controlling the size and curvature of the first area without affecting the center quality of the light spot focused by the polyhedral optical lens, and to weaken the edge stray noise of the light spot by the second area. This is beneficial to improving the transmission quality of the polyhedral optical lens at a higher transmission rate of the optical signal and reducing the size of the polyhedral optical lens, which is beneficial to the miniaturization of the polyhedral optical lens, and is beneficial to improving the optical performance of the polyhedral optical lens and the yield rate of adaptation to the laser.

[0009] As an optional implementation, the convex surface is an ellipsoidal surface or a spherical surface;

[0010] and / or,

[0011] The concave surface is a parabola or a hyperbola.

[0012] By setting the convex surface as a spherical surface, the light beam can be effectively focused and the focusing error can be reduced; at the same time, due to the uniform shape of the spherical surface, the manufacturing process of the multi-faceted optical lens is simpler, which is conducive to reducing the manufacturing time and manufacturing cost of the multi-faceted optical lens. By setting the convex surface as an ellipsoidal surface, the curvature radius of the convex surface can change continuously from the center to the edge of the convex surface as the main optical axis changes, so that the convex surface can better correct spherical aberration, which is conducive to improving the spot quality of the multi-faceted optical lens.

[0013] Since the parabola has a uniform divergent effect on the light, the concave surface is set as a parabola, and the light beam outside the convex surface can be effectively dispersed through the concave surface, so that the edge stray noise of the light spot of the multi-faceted optical lens can be effectively shielded. By setting the concave surface as a hyperboloid, the distortion of the optical lens can be minimized while achieving the curved shape of the concave surface, which is conducive to improving the scattering effect of the concave surface, and further conducive to improving the shielding effect of the edge stray noise of the light spot of the multi-faceted optical lens. In addition, the hyperboloid can reduce the curvature of the concave surface, which is conducive to the smooth connection between the concave surface and the convex surface, avoiding the formation of sharp angles at the connection between the concave surface and the convex surface, which makes the multi-faceted optical lens easy to break during manufacturing and affects the effect of shielding edge stray noise.

[0014] As an optional implementation, the projection of the convex surface on a tangent plane parallel to the thickness direction of the optically effective portion and passing through the vertex of the first region satisfies a curve equation:

[0015]

[0016] Wherein, c is the paraxial curvature, K is the quadratic constant, K is greater than -1, and K is less than or equal to 0, and Bi is the coefficient of the higher-order term. Setting the range of the quadratic constant K value of the curve equation of the convex surface on the tangent plane to be greater than -1 and less than or equal to 0 can better control the curvature radius of the convex surface, so that the surface shape of the convex surface can be a spherical surface or an ellipsoidal surface.

[0017] As an optional implementation, the projection of the concave surface on a tangent plane parallel to the thickness direction of the optically effective portion and passing through the vertex of the first region satisfies a curve equation:

[0018]

[0019] Wherein, c is the paraxial curvature, K is the quadratic constant, K is greater than -50, and K is less than or equal to -1, and Bi is the coefficient of the higher-order term. Setting the range of the quadratic constant K value of the curve equation of the concave surface on the tangent plane to be greater than -50 and less than or equal to -1 can better control the curvature radius of the concave surface, so that the surface shape of the concave surface can be a parabola or a hyperboloid.

[0020] As an optional implementation manner, the projection of the first area on a plane perpendicular to the thickness direction of the optically effective portion is a circle;

[0021] The projection of the second area on a plane perpendicular to the thickness direction of the optically effective portion is annular;

[0022] An outer diameter of a projection of the second region on a plane perpendicular to the thickness direction of the optically effective portion is linearly related to a diameter of a projection of the first region on a plane perpendicular to the thickness direction of the optically effective portion.

[0023] The size of the second area is set to be in a linear relationship with the size of the first area, that is, as the size of the first area increases, the size of the second area also increases synchronously, or as the size of the first area decreases, the size of the second area also decreases synchronously. In this way, while controlling the diameter of the light spot by controlling the size of the first area, the second area can better cooperate with the first area by synchronously changing the size of the second area, thereby better controlling the edge stray noise of the light spot.

[0024] As an optional implementation manner, a diameter of a projection of the first region on a plane perpendicular to a thickness direction of the optically effective portion is 50 μm-150 μm;

[0025] and / or,

[0026] An outer diameter of a projection of the second region on a plane perpendicular to a thickness direction of the optically effective portion is less than or equal to 400 μm.

[0027] By setting the diameter range of the circular projection of the first area on the plane perpendicular to the thickness direction of the optically effective part, the spot diameter of the multifaceted optical lens can be controlled within a smaller range, thereby improving the optical performance of the multifaceted optical lens and facilitating the miniaturization design of the multifaceted optical lens. By setting the outer diameter range of the circular projection of the second area on the plane perpendicular to the thickness direction of the optically effective part, the control of the light beam by the first area can be effectively coordinated, thereby effectively controlling the edge stray noise of the spot of the multifaceted optical lens, thereby facilitating the improvement of the optical performance of the multifaceted optical lens. Moreover, this is conducive to controlling the size of the multifaceted optical lens within a smaller range, thereby facilitating the miniaturization of the multifaceted optical lens.

[0028] As an optional implementation manner, a diameter of a projection of the first region on a plane perpendicular to a thickness direction of the optically effective portion is 50 μm-80 μm;

[0029] and / or,

[0030] An outer diameter of a projection of the second region on a plane perpendicular to the thickness direction of the optically effective portion is less than or equal to 150 μm.

[0031] By adopting the above method, the diameter of the circular projection of the first area on the plane in the thickness direction of the perpendicular optically effective part is set to 50μm-80μm, which can better control the spot diameter of the polyhedral optical lens, so that the diameter of the spot is controlled within a smaller range, thereby further improving the optical performance of the polyhedral optical lens to adapt to the use scenarios with higher requirements for controlling the energy distribution from the center to the edge of the spot, and is conducive to the miniaturization of the polyhedral optical lens.

[0032] At the same time, by setting the outer diameter of the circular projection of the second area on the plane perpendicular to the thickness direction of the optical effective part to be less than or equal to 150 μm, the control of the light beam by the first area can be better coordinated, so that the edge stray noise of the light spot of the multi-faceted optical lens can be further controlled, which is conducive to further improving the optical performance of the multi-faceted optical lens to adapt to the use situation that requires a higher optical signal transmission rate. In addition, this is conducive to controlling the size of the multi-faceted optical lens within a smaller range, which is more conducive to the miniaturization of the multi-faceted optical lens.

[0033] As an optional embodiment, on a tangent plane parallel to the thickness direction of the optically effective portion and passing through the vertex of the first region, the first region intersects with the second region to form a first intersection, the first region has a first tangent passing through the first intersection, the second region has a second tangent passing through the first intersection, and a first angle is formed between the first tangent and the second tangent with an opening toward the first region, and the first angle is an acute angle;

[0034] and / or,

[0035] On a tangent plane parallel to the thickness direction of the optically effective portion and passing through the vertex of the first region, the second region intersects with the third region to form a second intersection, the second region has a third tangent passing through the second intersection, the third region has a fourth tangent passing through the second intersection, and a second angle is formed between the third tangent and the fourth tangent, which opens toward the third region, and the second angle is an acute angle.

[0036] Compared with the method in which the first angle and the second angle are right angles or obtuse angles, the contact angles formed between the first area and the second area, and between the second area and the third area are sharper (even crescent-shaped) when the first angle and the second angle are right angles or obtuse angles, which are easy to break during the processing and preparation process, thereby affecting the quality of the multi-faceted optical lens. In addition, when light passes through the first angle and the second angle of right angles or obtuse angles, it is easy to produce a diffraction effect, thereby generating edge stray light, affecting the control effect of the multi-faceted optical lens on the light spot.

[0037] Based on this, the present application sets the first angle and the second angle as acute angles, which can avoid the occurrence of this situation and is beneficial to further control the edge stray noise of the light spot of the polyhedral optical lens, thereby helping to improve the optical performance of the polyhedral optical lens to adapt to usage scenarios that require higher optical signal transmission rates.

[0038] As an optional implementation, the first angle is 40°-80°;

[0039] and / or,

[0040] The second angle is 70°-85°.

[0041] By setting the first angle at 40°-80°, the first area and the second area can have a suitable radius of curvature, avoiding the first area and the second area having a relatively gentle curved surface which affects the effect of controlling the light spot in the first area and the second area, which is beneficial to improving the optical performance of the multi-faceted optical lens to adapt to the use situation that requires a higher optical signal transmission rate. In addition, the probability of the first angle being too sharp and causing breakage at the first angle during production or use can be reduced.

[0042] By setting the second angle at 70°-85°, the probability of breakage at the first angle due to the second angle being too sharp during production or use can be further reduced; at the same time, the second area can have a suitable radius of curvature, which is beneficial to improving the shielding effect of the second area on the edge stray noise of the light spot, thereby helping to improve the optical performance of the multi-faceted optical lens to adapt to usage scenarios that require a higher optical signal transmission rate.

[0043] As an optional implementation, the second region includes a plurality of sub-regions, each of the sub-regions is a concave surface at the near optical axis, and the plurality of sub-regions are sequentially arranged along the first direction;

[0044] The first direction is a direction from the first area to the second area.

[0045] In this way, the curvature radius and size of each concave surface arranged on each sub-area on the second area can be better adjusted, so that each sub-area can better control the edge stray noise of the light spot, which is beneficial to improving the overall shielding effect of the second area on the edge stray noise of the light spot, and further beneficial to improving the optical performance of the multi-faceted optical lens to adapt to the use scenarios that require a higher optical signal transmission rate.

[0046] As an optional implementation manner, a plurality of the sub-regions are sequentially spaced apart along the first direction;

[0047] The second region further includes a plurality of transition regions, each of which is connected between two adjacent sub-regions, and each of which is a plane at the near optical axis.

[0048] The method of connecting two adjacent sub-regions with a transition zone can make the transition between the sub-regions smoother, avoid the formation of a sharp contact angle at the connection between the two sub-regions, and avoid the situation that the connection between the two sub-regions is easy to break during the processing and preparation process, thereby affecting the quality of the multi-faceted optical lens. At the same time, when the curvature radius of the sub-region is small, it can avoid the situation that the two sub-regions are directly connected to form a sharp contact angle, which causes the diffraction of light at the connection between the two sub-regions, which is conducive to better control of the edge stray noise of the light spot, and thus is conducive to improving the optical performance of the multi-faceted optical lens.

[0049] As an optional embodiment, on a tangent plane parallel to the thickness direction of the optically effective portion and passing through the vertex of the first region, each transition zone intersects with the adjacent sub-region to form a third intersection, the transition zone has a fifth tangent passing through the corresponding third intersection, and the sub-region has a sixth tangent passing through the corresponding third intersection, and a third angle opening toward the corresponding sub-region is formed between the fifth tangent and the sixth tangent passing through the same third intersection, and the third angle is an acute angle.

[0050] Compared with the third angle being a right angle or an obtuse angle, setting the third angle as an acute angle can avoid forming a relatively sharp (even crescent-shaped) contact angle between the second area and the third area, thereby reducing the probability of the multi-faceted optical lens being broken during processing, preparation or use, which is beneficial to improving the quality and service life of the multi-faceted optical lens. In addition, by setting the second angle as an acute angle, the probability of optical diffraction occurring at the connection between the second area and the third area can be reduced, which is beneficial to further control the edge stray noise of the light spot of the multi-faceted optical lens, thereby improving the optical performance of the multi-faceted optical lens.

[0051] As an optional implementation, an attenuation layer is provided on the second area. By providing the attenuation layer, the light irradiated on the second area can be absorbed and scattered, thereby reducing the intensity of the light, which is beneficial to reducing the edge stray noise of the light spot, thereby improving the optical performance of the multi-faceted optical lens to adapt to the use situation that requires a higher optical signal transmission rate.

[0052] As an optional implementation manner, the third region forms a projection on a plane perpendicular to the thickness direction of the optically effective portion, and the distance between two farthest points on the projection is less than or equal to 600 μm;

[0053] and / or,

[0054] The third area is a plane at the near optical axis.

[0055] By setting the third area as a plane, it is possible to avoid focusing or scattering of light passing through the third area, thereby avoiding the influence of light passing through the third area on the light spot of the multi-faceted optical lens, which is beneficial to improving the optical performance of the multi-faceted optical lens. By limiting the range of the third area to within 600 μm, it is beneficial to reduce the size of the multi-faceted optical lens, thereby facilitating the miniaturization of the multi-faceted optical lens.

[0056] As an optional embodiment, the polyhedral optical lens further includes a light inlet surface and a light outlet surface, and the light inlet surface and / or the light outlet surface have the first area, the second area and the third area. In this way, by providing the first area, the second area and the third area on the light inlet surface and the light outlet surface, the diameter of the light spot can be reduced by controlling the size and curvature of the first area without affecting the center quality of the light spot focused by the polyhedral optical lens, and the edge stray noise of the light spot can be weakened by the second area, which is beneficial to improving the transmission quality of the polyhedral optical lens at a higher transmission rate of the optical signal and reducing the size of the polyhedral optical lens, thereby facilitating the miniaturization of the polyhedral optical lens, and improving the optical performance of the polyhedral optical lens and the yield rate of the laser adaptation. In addition, compared with the method of providing the first area, the second area and the third area on the light inlet surface or the light outlet surface, the method of providing the first area, the second area and the third area on the light inlet surface and the light outlet surface can collect the light by the light inlet surface, and then focus the light by the light outlet surface, which is beneficial to further reduce the diameter of the light spot and improve the effect of weakening the edge stray noise of the light spot.

[0057] As an optional implementation manner, the light incident surface and the light emitting surface are parallel to each other; or,

[0058] An angle is formed between the light incident surface and the light emitting surface.

[0059] By arranging the light-input surface and the light-output surface in parallel, the light beam can be better transmitted, the energy loss of the light beam can be reduced, and the optical performance of the multi-faceted optical lens can be improved. By adopting the method of forming an angle between the light-input surface and the light-output surface, the multi-faceted optical lens can be used to refract the light beam, thereby changing the direction of the light path, so that the multi-faceted optical lens can meet the scene that needs to change the transmission direction of the light path, which is conducive to improving the applicability of the multi-faceted optical lens.

[0060] As an optional embodiment, the shape of the multifaceted optical lens includes a cylinder or a polygon. By setting the multifaceted optical lens to be a cylinder or a polygon, the multifaceted optical lens can be adapted to a variety of usage scenarios, which is conducive to improving the applicability of the multifaceted optical lens.

[0061] As an optional embodiment, the material of the multi-faceted optical lens includes polyetherimide, single crystal silicon, polycrystalline silicon, silica glass, borosilicate glass or acrylic. By using materials such as polyetherimide, single crystal silicon, polycrystalline silicon, silica glass, borosilicate glass or acrylic, the multi-faceted optical lens has high transparency, thermal stability and good mechanical properties, which is conducive to improving the overall structural stability of the multi-faceted optical lens and achieving good optical properties of the multi-faceted optical lens.

[0062] In the second aspect, the embodiment of the present application further discloses a lens array, comprising a plurality of polyhedral optical lenses as described in the first aspect above, wherein the plurality of polyhedral optical lenses are arranged in an array. The plurality of polyhedral optical lenses arranged in an array can control multiple light beams, and each polyhedral optical lens can control one light beam separately, which can reduce the diameter of the light spot and weaken the edge stray noise of the light spot without affecting the center quality of the light spot focused by the polyhedral optical lens, thereby improving the optical performance and applicability of the lens array.

[0063] In a third aspect, the embodiment of the present application further discloses an optical module, including the polyhedral optical lens as described in the first aspect or the lens array as described in the second aspect. The optical module having the polyhedral optical lens as described in the first aspect or the lens array as described in the second aspect can also reduce the diameter of the light spot and weaken the edge stray noise of the light spot without affecting the center quality of the light spot focused by the polyhedral optical lens, which is beneficial to improving the optical performance and applicability of the optical module.

[0064] In a fourth aspect, an embodiment of the present application further discloses an optical communication device, comprising the optical module as described in the third aspect above.

[0065] Compared with the prior art, the beneficial effects of this application are:

[0066] The polyhedral optical lens, lens array, optical module and optical communication equipment provided by the embodiments of the present application are provided with a first area which is convex at the near optical axis and a second area which is arranged around the periphery of the first area and is concave at the near optical axis in the optically effective part. The light beam can be focused by the first area, and the edge stray noise of the light beam can be shielded by the second area, so that the diameter of the light spot can be controlled by controlling the size of the first area without affecting the center quality of the light spot focused by the polyhedral optical lens, and the edge stray noise of the light spot can be weakened by the second area, which is conducive to improving the transmission quality of the polyhedral optical lens at a higher transmission rate of the optical signal and reducing the size of the polyhedral optical lens, thereby helping to improve the optical performance of the polyhedral optical lens and miniaturize the polyhedral optical lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0068] Figure 1 It is a structural schematic diagram of an optical lens in the related art;

[0069] Figure 2 It is a schematic structural diagram of a multi-faceted optical lens provided in an embodiment of the present application;

[0070] Figure 3 is a schematic plan view of a multi-faceted optical lens provided in an embodiment of the present application;

[0071] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle;

[0072] Figure 5 It is a schematic diagram of the optical path of a multi-faceted optical lens provided in an embodiment of the present application;

[0073] Figure 6 yes Figure 4 A partial enlarged view of the K in the middle;

[0074] Figure 7 is a schematic structural diagram of a multi-faceted optical lens (the second region includes multiple sub-regions) provided in an embodiment of the present application;

[0075] Figure 8 yes Figure 7 A partial enlarged view of the G in the middle;

[0076] Fig. 9 yes Figure 8 A partial enlarged view of the H in the middle;

[0077] Fig.10 yes Figure 8 A partial enlarged view of point F in the middle;

[0078] Fig.11 It is a schematic structural diagram of a multi-faceted optical lens (the light-emitting surface has a first area) provided in an embodiment of the present application;

[0079] Fig.12 It is a schematic structural diagram of a multi-faceted optical lens (the light incident surface has a first area) provided in an embodiment of the present application;

[0080] Fig.13 It is a schematic structural diagram of a multi-faceted optical lens (with an angle formed between the light emitting surface and the light incident surface) provided in an embodiment of the present application;

[0081] Fig.14 is a structural schematic diagram of a lens array provided in an embodiment of the present application;

[0082] Fig.15 is another structural schematic diagram of a lens array provided in an embodiment of the present application;

[0083] Fig.16is a structural schematic diagram of an optical module provided in an embodiment of the present application;

[0084] Fig.17 It is a structural schematic diagram of an optical communication device provided in an embodiment of the present application.

[0085] Description of reference numerals:

[0086] 100-polyhedral optical lens; M-light inlet surface; N-light outlet surface; 1-optically effective part; 11-first area; D1-diameter; E-vertex of the first area; 12-second area; D2-outer diameter; 121-sub-area; 122-transition area; 12a-attenuation layer; 2-supporting part; 21-third area; A-first intersection; B-second intersection; C-third intersection; L1-first tangent; L2-second tangent; L3-third tangent; L4-fourth tangent; L5-fifth tangent; L6-sixth tangent; α-first angle; β-second angle; θ-third angle; P-tangent plane; X-thickness direction; Y-first direction; 200-lens array; 300-optical module; 400-optical communication equipment. DETAILED DESCRIPTION

[0087] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0088] In this application, the directions or positional relationships indicated by the terms "upper", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0089] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0090] In addition, the terms "disposed", "provided with", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0091] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0092] Before explaining the technical solution of the present application, the inventive concept of the present application is first explained.

[0093] Optical communication is a communication method that uses light waves as carrier waves. With the development of Internet technology, the Internet system has grown rapidly, resulting in an exponential growth in the amount of data and information generated by the Internet. This has led to the rapid development of optical communication technology with greater transmission bandwidth and capacity, lower transmission loss, stronger anti-electromagnetic interference ability and higher transmission quality. Among the related technologies, optical communication has been widely used in data centers, telecommunication networks, fiber-optic broadband, automotive electronics, industrial manufacturing and other industries due to its excellent performance.

[0094] In order to adapt to the development needs of modern communication networks, improve the integration of equipment and reduce energy consumption, higher requirements are placed on the miniaturization, transmission rate and transmission quality of optical communication equipment. Optical lenses play a vital role in optical communication, and can ensure efficient, stable and high-quality transmission of optical communication through technical means such as focusing and beam shaping. Figure 1 , Figure 1 is a schematic diagram of the structure of an optical lens in the related art. However, in the related art, Figure 1 As shown in (a) in the figure, when transmitting an optical signal through an optical lens (convex lens), the spot diameter of the light beam passing through the optical lens is large, and the energy density of the light at the edge of the spot is obviously dispersed, which is not conducive to the miniaturization of optical communication equipment; and when the transmission rate of the optical signal is increased, the dispersed light is easy to form stray noise, thereby affecting the transmission quality of the optical signal.

[0095] In order to reduce the diameter of the light spot, Figure 1As shown in (b) in the figure, the inventors tried to reduce the diameter of the focused light beam by reducing the diameter of the optical lens, thereby reducing the diameter of the light spot. However, by reducing the diameter of the optical lens (convex lens part), although the central part of the light beam can be focused, the light beam at the edge will directly pass through the optical lens, forming edge stray noise, causing the light spot diameter to not be proportionally reduced, and even to increase.

[0096] In view of this, the embodiments of the present application provide a polyhedral optical lens, a lens array, an optical module and an optical communication device. The polyhedral optical lens is provided with a first area which is convex at the near optical axis and a second area which is arranged around the periphery of the first area and is concave at the near optical axis in the optically effective part. Therefore, the polyhedral optical lens can reduce the diameter of the light spot without affecting the center quality of the light spot focused by the polyhedral optical lens, and can weaken the edge stray noise of the light spot, which is beneficial to improving the optical performance of the polyhedral optical lens and facilitating the miniaturization of the polyhedral optical lens.

[0097] The technical solution of the present application is further described below through specific embodiments and drawings.

[0098] See also Figures 2 to 5 , Figure 2 It is a schematic structural diagram of a multi-faceted optical lens provided in an embodiment of the present application; Figure 3 is a schematic plan view of a multi-faceted optical lens provided in an embodiment of the present application; Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle; Figure 5 Schematic diagram of the optical path of a multi-faceted optical lens provided in an embodiment of the present application ( Figure 5 In the first aspect, the embodiment of the present application discloses a multi-faceted optical lens 100, comprising an optically effective portion 1 and a supporting portion 2, wherein the optically effective portion 1 comprises a first region 11 and a second region 12 arranged around the first region 11, that is, the first region and the second region are both optically effective regions, the first region 11 is a convex surface at the near optical axis, and the second region 12 is a concave surface at the near optical axis, the supporting portion 2 is arranged at the periphery of the optically effective portion 1, and the supporting portion 2 comprises a third region 21, and the third region 21 is arranged around the periphery of the second region 12.

[0099] It can be understood that the first area 11 being convex at the near optical axis means that the first area 11 is a structure similar to a convex lens. Since a convex lens can focus a light beam, the light beam can be focused through the first area 11 .

[0100] It can be understood that the second area 12 being concave at the near optical axis means that the second area 12 is similar to a concave lens in structure. Since the concave lens can disperse the light beam, the second area 12 can disperse the light at the edge of the light beam, thereby avoiding the edge stray noise of the light beam.

[0101] By setting the first area 11 and the second area 12 in the optically effective part 1, it is possible to reduce the diameter of the light spot by controlling the size and curvature of the first area 11 without affecting the center quality of the light spot focused by the polyhedral optical lens 100, and to weaken the edge stray noise of the light spot by the second area 12, which is beneficial to improving the transmission quality of the polyhedral optical lens 100 at a higher transmission rate of the optical signal and reducing the size of the polyhedral optical lens 100, thereby facilitating the miniaturization of the polyhedral optical lens 100, and improving the optical performance of the polyhedral optical lens 100 and the yield rate of adaptation to the laser.

[0102] In order to make the first area 11 and the second area 12 have a better optical effect, the surface shapes of the convex surface and the concave surface need to be designed, as described below:

[0103] Optionally, the convex surface includes a spherical surface. By setting the convex surface as a spherical surface, the light beam can be effectively focused and the focusing error can be reduced; at the same time, since the spherical surface has a uniform shape, the manufacturing process of the multi-faceted optical lens 100 is simpler, which is conducive to reducing the manufacturing time of the multi-faceted optical lens 100 and reducing the manufacturing cost of the multi-faceted optical lens 100.

[0104] Alternatively, the convex surface includes an ellipsoidal surface. By setting the convex surface as an ellipsoidal surface, the radius of curvature of the convex surface can continuously change from the center to the edge of the convex surface as the main optical axis changes, so that the convex surface can better correct spherical aberration, thereby facilitating improving the light spot quality of the multi-faceted optical lens 100.

[0105] Optionally, the concave surface includes a parabola. Since the parabola has a uniform divergence effect on light, the concave surface can effectively disperse the light beam outside the convex surface, thereby effectively shielding the edge stray noise of the light spot of the multi-faceted optical lens 100.

[0106] Alternatively, the concave surface includes a hyperbolic surface. By setting the concave surface as a hyperbolic surface, the distortion of the multi-faceted optical lens 100 can be minimized while achieving the curved shape of the concave surface, which is beneficial to improving the scattering effect of the concave surface, and further beneficial to improving the shielding effect of the edge stray noise of the light spot of the multi-faceted optical lens 100. In addition, the curvature of the concave surface can be reduced by the hyperbolic surface, which is beneficial to the smooth connection between the concave surface and the convex surface, and avoids the formation of a sharp angle at the connection between the concave surface and the convex surface, which causes the multi-faceted optical lens 100 to be easily broken during manufacturing and affects the effect of shielding edge stray noise.

[0107] In some optional embodiments, the convex surface has rotational symmetry and can be represented by a curve equation on the tangent plane. Specifically, the projection of the convex surface on the tangent plane P parallel to the thickness direction X of the optically effective part 1 and passing through the vertex of the first region 11 satisfies the curve equation:

[0108]

[0109] Wherein, c is the paraxial curvature, K is the quadratic constant, K is greater than -1, and K is less than or equal to 0, and Bi is the coefficient of the higher-order term. By setting the range of the quadratic constant K value of the curve equation of the convex surface on the tangent plane P to be greater than -1 and less than or equal to 0, the curvature radius of the convex surface can be better controlled, so that the surface shape of the convex surface can be a spherical surface or an ellipsoidal surface.

[0110] Optionally, the above K is greater than -1, and K is less than or equal to 0, and may be, for example, -0.8, -0.6, -0.4, -0.2, 0, etc., which is not limited in this embodiment.

[0111] Optionally, the above K is greater than -1 and K is less than or equal to 0, which may be K greater than -1 and K is less than or equal to 0. Alternatively, K is greater than -1 and K is less than 0. Alternatively, K is greater than -0.8 and K is less than 0. Alternatively, K is greater than -0.6 and K is less than 0. Alternatively, K is greater than -0.6 and K is less than -0.2. Alternatively, K is greater than -0.6 and K is less than -0.4, etc., which are not limited in this embodiment.

[0112] In some optional embodiments, the concave surface has rotational symmetry and can be represented by a curve equation on the tangent plane. Specifically, the projection of the concave surface on the tangent plane P parallel to the thickness direction X of the optically effective part 1 and passing through the vertex of the first region 11 satisfies the curve equation:

[0113]

[0114] Wherein, c is the paraxial curvature, K is the quadratic constant, K is greater than -50, and K is less than or equal to -1, and Bi is the coefficient of the higher-order term. By setting the range of the quadratic constant K value of the curve equation of the concave surface on the tangent plane P to be greater than -50 and less than or equal to -1, the curvature radius of the concave surface can be better controlled, so that the surface shape of the concave surface can be a parabola or a hyperboloid.

[0115] Optionally, the above K is greater than -50, and K is less than or equal to -1, and can be, for example, -45, -40, -35, -30, -25, -20, -15, -10, -5, -3, -1, etc., which is not limited in this embodiment.

[0116] Optionally, the above K is greater than -50 and K is less than or equal to -1, which may be K greater than -50 and K is less than or equal to -1. Alternatively, K is greater than -50 and K is less than -1. Alternatively, K is greater than -45 and K is less than -1. Alternatively, K is greater than -40 and K is less than -1. Alternatively, K is greater than -35 and K is less than -1. Alternatively, K is greater than -30 and K is less than -1. Alternatively, K is greater than -25 and K is less than -1. Alternatively, K is greater than -25 and K is less than -3. Alternatively, K is greater than -25 and K is less than -5. Alternatively, K is greater than -20 and K is less than -5. Alternatively, K is greater than -15 and K is less than -5. Alternatively, K is greater than -10 and K is less than -5, etc., which are not limited in this embodiment.

[0117] In order to better control the spot diameter of the multifaceted optical lens 100 and shield the edge stray noise of the spot, it is necessary to design the size range of the first area 11 and the second area 12, as described below:

[0118] As an optional implementation, Figure 3 As shown, the projection of the first area 11 on the plane perpendicular to the thickness direction X of the optically effective part 1 is circular, the projection of the second area 12 on the plane perpendicular to the thickness direction X of the optically effective part 1 is annular, and the outer diameter D2 of the projection of the second area 12 on the plane perpendicular to the thickness direction X of the optically effective part 1 is linearly related to the diameter D1 of the projection of the first area 11 on the plane perpendicular to the thickness direction X of the optically effective part 1. The size of the second area 12 is set to be linearly related to the size of the first area 11, that is, as the size of the first area 11 increases, the size of the second area 12 also increases synchronously, or as the size of the first area 11 decreases, the size of the second area 12 also decreases synchronously, so that while the spot diameter is controlled by controlling the size of the first area 11, the second area 12 can better cooperate with the first area 11 by changing the size of the second area 12 synchronously, so that the edge stray noise of the spot can be better controlled.

[0119] Alternatively, if Figure 3 As shown, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-150 μm. By setting the range of the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1, the spot diameter of the multifaceted optical lens 100 can be controlled within a smaller range, thereby improving the optical performance of the multifaceted optical lens 100 and facilitating the miniaturization design of the multifaceted optical lens 100.

[0120] Optionally, a diameter D1 of a projection of the first region 11 on a plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-150 μm, and may be, for example, 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, 75 μm, 80 μm, 85 μm, 90 μm, 95 μm, 100 μm, 105 μm, 110 μm, 115 μm, 120 μm, 125 μm, 130 μm, 135 μm, 140 μm, 145 μm, 150 μm, etc., which is not limited to the present embodiment.

[0121] Optionally, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-150 μm, which may be that the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-150 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-145 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-140 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-135 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-130 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-125 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-120 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-115 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-110 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-105 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-100 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-95 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-90 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-85 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-80 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 55 μm-80 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 60 μm-80 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 65 μm-80 μm. Alternatively, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 70 μm-80 μm, etc., which is not limited in this embodiment.

[0122] Further, the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm-80 μm. By setting the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 to 50 μm-80 μm, the spot diameter of the multifaceted optical lens 100 can be better controlled, so that the spot diameter is controlled within a smaller range, thereby further improving the optical performance of the multifaceted optical lens 100, to adapt to the use case with higher requirements for controlling the energy distribution from the center to the edge of the spot, and facilitating the miniaturization of the multifaceted optical lens 100.

[0123] Alternatively, if Figure 3 As shown, the outer diameter D2 of the projection of the second area 12 on the plane perpendicular to the thickness direction X of the optically effective part 1 is less than or equal to 400 μm. By setting the outer diameter D2 range of the projection of the second area 12 on the plane perpendicular to the thickness direction X of the optically effective part 1, the control of the light beam by the first area 11 can be effectively coordinated, so that the edge stray noise of the light spot of the multi-faceted optical lens 100 can be effectively controlled, which is beneficial to improving the optical performance of the multi-faceted optical lens 100. In addition, this is beneficial to controlling the size of the multi-faceted optical lens 100 within a smaller range, which is beneficial to the miniaturization of the multi-faceted optical lens 100.

[0124] Optionally, the outer diameter D2 of the projection of the second region 12 on a plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 400 μm, and can be, for example, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, 150 μm, 160 μm, 170 μm, 180 μm, 190 μm, 200 μm, 210 μm, 220 μm, 230 μm, 240 μm, 250 μm, 260 μm, 270 μm, 280 μm, 290 μm, 300 μm, 310 μm, 320 μm, 330 μm, 340 μm, 350 μm, 360 μm, 370 μm, 380 μm, 390 μm, 400 μm, 410 μm, 420 μm, 430 μm, 440 μm, 450 μm, 460 μm, 470 μm, 480 μm, 490 μm, 500 μm, 510 μm, 520 μm, 530 μm, 540 μm, 550 μm, 560 μm, 570 μm, 580 μm, 590 μm, 600 μm, 610 μm, 610 μm, 620 μm, 630 μm, 640 μm 0μm, 210μm, 220μm, 230μm, 240μm, 250μm, 260μm, 270μm, 280μm, 290μm, 300μm, 310μm, 320μm, 330μm, 340μm, 350μm, 360μm, 370μm, 380μm, 390μm, 400μm, etc., which is not limited in this embodiment.

[0125] Optionally, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective part 1 is less than or equal to 400 μm, which may be that the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective part 1 is less than or equal to 400 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective part 1 is less than or equal to 390 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective part 1 is less than or equal to 380 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective part 1 is less than or equal to 370 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective part 1 is less than or equal to 360 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective part 1 is less than or equal to 350 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 340 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 330 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 320 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 310 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 300 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 290 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 280 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 270 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 260 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 250 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 240 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 230 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 220 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 210 μm.Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 200 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 190 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 180 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 170 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 160 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 150 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 140 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 130 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 120 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 110 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 100 μm. Alternatively, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is less than or equal to 90 μm, etc., which is not limited in this embodiment.

[0126] Furthermore, the outer diameter D2 of the projection of the second area 12 on the plane perpendicular to the thickness direction X of the optically effective part 1 is less than or equal to 150 μm. By setting the outer diameter D2 of the circular projection of the second area 12 on the plane perpendicular to the thickness direction X of the optically effective part 1 to be less than or equal to 150 μm, it is possible to better cooperate with the control of the light beam by the first area 11, thereby further controlling the edge stray noise of the light spot of the multi-faceted optical lens 100, and further improving the optical performance of the multi-faceted optical lens 100 to adapt to the use situation that requires a higher optical signal transmission rate. In addition, this is conducive to controlling the size of the multi-faceted optical lens 100 within a smaller range, thereby being more conducive to the miniaturization of the multi-faceted optical lens 100.

[0127] It can be understood that, since the second region 12 is arranged around the outer periphery of the first region 11, the inner diameter of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is equal to the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1, that is, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 must be greater than the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1. For example, if the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 50 μm, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 may be 60 μm; if the diameter D1 of the projection of the first region 11 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 80 μm, the outer diameter D2 of the projection of the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 may be 100 μm.

[0128] Please combine Figure 6 , Figure 6 yes Figure 4 A partial enlarged view of the K in the figure. Since the first area 11 and the second area 12 have different curvature radii, diffraction may occur at the connection between the second area 12 and the first area 11 to generate stray light, thereby forming edge stray noise, which affects the quality of the light spot. Therefore, the present application also designs a solution to avoid the generation of stray light at the connection between the second area 12 and the first area 11, as described below:

[0129] As an optional implementation, Figure 6 As shown, on a tangent plane P which is parallel to the thickness direction X of the optically effective portion 1 and passes through the vertex E of the first region, the first region 11 and the second region 12 intersect to form a first intersection A, the first region 11 has a first tangent line L1 passing through the first intersection A, the second region 12 has a second tangent line L2 passing through the first intersection A, and a first angle α is formed between the first tangent line L1 and the second tangent line L2, with the opening facing the first region 11, and the first angle α is an acute angle. Compared with the manner in which the first angle α between the first region 11 and the second region 12 at the first intersection A is a right angle or an obtuse angle, when the first angle α is a right angle or an obtuse angle, the contact angle formed between the first region 11 and the second region 12 is relatively sharp (even crescent-shaped), and is easily broken during the processing and preparation process, thereby affecting the quality of the multi-faceted optical lens 100. In addition, when light passes through the first angle α of a right angle or an obtuse angle, it is easy to produce a diffraction effect, thereby generating edge stray light, which affects the control effect of the multi-faceted optical lens 100 on the light spot.

[0130] Based on this, the present application sets the first angle α as an acute angle, which can avoid the occurrence of this situation, and is beneficial to further control the edge stray noise of the light spot of the polyhedral optical lens 100, thereby helping to improve the optical performance of the polyhedral optical lens 100 to adapt to usage scenarios that require a higher optical signal transmission rate.

[0131] It is understandable that if Figure 4 As shown, the vertex E of the first region refers to the highest point on the convex surface of the first region 11 .

[0132] It can be understood that the first angle α is an acute angle, which may be 0°-90°. Alternatively, the first angle α is 5°-90°. Alternatively, the first angle α is 10°-90°. Alternatively, the first angle α is 15°-90°. Alternatively, the first angle α is 20°-90°. Alternatively, the first angle α is 25°-90°. Alternatively, the first angle α is 30°-90°. Alternatively, the first angle α is 35°-90°. Alternatively, the first angle α is 40°-90°. Alternatively, the first angle α is 40°-85°. Alternatively, the first angle α is 40°-80°. Alternatively, the first angle α is 40°-75°. Alternatively, the first angle α is 40°-70°. Alternatively, the first angle α is 45°-70°. Alternatively, the first angle α is 50°-70°. Alternatively, the first angle α is 55°-70°. Alternatively, the first angle α is 60°-70°. Alternatively, the first angle α is 60°-65°, etc., which is not limited in this embodiment.

[0133] Furthermore, the first angle α is 40°-80°. By setting the first angle α to 40°-80°, the first area 11 and the second area 12 can have a suitable radius of curvature, and avoid the first area 11 and the second area 12 having a relatively gentle curved surface that affects the effect of the first area 11 and the second area 12 on controlling the light spot, which is beneficial to improving the optical performance of the multi-faceted optical lens 100 to adapt to the use situation that requires a higher optical signal transmission rate. In addition, the probability of the first angle α being too sharp and causing breakage at the first angle α during production, processing or use can also be reduced.

[0134] Optionally, the first angle α is 40°-80°, and may be, for example, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, etc., which is not limited in this embodiment.

[0135] Optionally, in order to further improve the control of the edge stray noise of the light spot by the multi-faceted optical lens 100, the present application also designs a solution to avoid the generation of stray light at the connection between the second area 12 and the third area 21. Specifically, Figure 6As shown, on a tangent plane P which is parallel to the thickness direction X of the optically effective portion 1 and passes through the vertex E of the first region, the second region 12 intersects with the third region 21 to form a second intersection point B, the second region 12 has a third tangent line L3 passing through the second intersection point B, the third region 21 has a fourth tangent line L4 passing through the second intersection point B, and a second angle β is formed between the third tangent line L3 and the fourth tangent line L4, the second angle β being an acute angle.

[0136] Compared with the method in which the second angle β between the second area 12 and the third area 21 at the second intersection B is a right angle or an obtuse angle, when the second angle β is a right angle or an obtuse angle, the contact angle formed between the second area 12 and the third area 21 is relatively sharp (even crescent-shaped), which is easy to break during the processing and preparation process, thereby affecting the quality of the multi-faceted optical lens 100; and, when the light passes through, the second angle β of a right angle or an obtuse angle is easy to produce a diffraction effect, thereby generating edge stray light, affecting the control effect of the multi-faceted optical lens 100 on the light spot.

[0137] Based on this, the present application sets the second angle β as an acute angle, which can avoid the occurrence of this situation and is beneficial to further control the edge stray noise of the light spot of the polyhedral optical lens 100, thereby helping to improve the optical performance of the polyhedral optical lens 100 to adapt to usage scenarios that require a higher optical signal transmission rate.

[0138] It can be understood that the second angle β is an acute angle, which may be 0°-90°. Alternatively, the second angle β is 5°-90°. Alternatively, the second angle β is 10°-90°. Alternatively, the second angle β is 15°-90°. Alternatively, the second angle β is 20°-90°. Alternatively, the second angle β is 25°-90°. Alternatively, the second angle β is 30°-90°. Alternatively, the second angle β is 35°-90°. Alternatively, the second angle β is 40°-90°. Alternatively, the second angle β is 45°-90°. Alternatively, the second angle β is 50°-90°. Alternatively, the second angle β is 55°-90°. Alternatively, the second angle β is 60°-90°. Alternatively, the second angle β is 65°-90°. Alternatively, the second angle β is 70°-90°. Alternatively, the second angle β is 70°-85°. Alternatively, the second angle β is 70°-80°. Alternatively, the second angle β is 75°-80°, etc., which is not limited in this embodiment.

[0139] Furthermore, the second angle β is 70°-85°. By setting the second angle β to 70°-85°, the probability of the second angle β being too sharp and causing the first angle α to break during production or use can be further reduced; at the same time, the second area 12 can have a suitable radius of curvature, which is conducive to improving the shielding effect of the second area 12 on the edge stray noise of the light spot, thereby helping to improve the optical performance of the multi-faceted optical lens 100 to adapt to the use situation that requires a higher optical signal transmission rate.

[0140] Optionally, the second angle β is 70°-85°, and may be, for example, 70°, 71°, 72°, 73°, 74°, 75°, 76°, 77°, 78°, 79°, 80°, 81°, 82°, 83°, 84°, 85°, etc., which is not limited to the present embodiment.

[0141] Optionally, the second angle β is 70°-85°, which may be 70°-85°. Alternatively, the second angle β is 73°-85°. Alternatively, the second angle β is 75°-85°. Alternatively, the second angle β is 75°-83°. Alternatively, the second angle β is 75°-80°. Alternatively, the second angle β is 77°-80°, etc., which is not limited in this embodiment.

[0142] See also Figures 7 to 10 , Figure 7 is a schematic structural diagram of a multi-faceted optical lens (the second region includes multiple sub-regions) provided in an embodiment of the present application; Figure 8 yes Figure 7 A partial enlarged view of the G in the middle; Fig. 9 yes Figure 8 A partial enlarged view of the H in the middle; Fig.10 yes Figure 8 In order to improve the control effect of the second area 12 on the edge stray noise of the light spot, the second area 12 can also be designed in different areas, as shown in the following:

[0143] In some optional embodiments, the second region may be a region, that is, on the optically effective portion, including a first region and a second region, and the second region is connected between the first region and the third region.

[0144] In some other optional embodiments, such as Figure 7 and Figure 8As shown, the second area 12 includes a plurality of sub-areas 121, each of which is a concave surface at the near optical axis, and the plurality of sub-areas 121 are sequentially arranged along the first direction Y, wherein the first direction Y is the direction from the first area 11 to the second area 12. In this manner, the curvature radius and size of each concave surface arranged on each sub-area 121 on the second area 12 can be better adjusted, so that each sub-area 121 can achieve better control of the edge stray noise of the light spot, thereby facilitating the overall shielding effect of the second area 12 on the edge stray noise of the light spot, and further facilitating the improvement of the optical performance of the multi-faceted optical lens 100, so as to adapt to the use situation requiring a higher optical signal transmission rate.

[0145] It can be understood that the first direction Y is the radial direction of the circular projection of the first region 11 on a plane perpendicular to the thickness direction X of the optically effective portion 1 .

[0146] Optionally, the second area 12 includes a plurality of sub-areas 121 , which may be, for example, 2, 3, 4, 5, 6, etc., which is not limited in this embodiment.

[0147] It can be understood that the above-mentioned multiple sub-regions 121 are arranged in sequence along the first direction Y. It can be that the multiple sub-regions 121 are arranged in sequence along the first direction Y, and each sub-region 121 is respectively connected to the adjacent sub-region 121; it can also be that the multiple sub-regions 121 are arranged in sequence along the first direction Y at intervals, and this embodiment is not limited to this.

[0148] As an example, Figures 7 to 10 As shown, a plurality of sub-regions 121 are arranged in sequence along the first direction Y, and the second region 12 also includes a plurality of transition regions 122, each of which is connected between two adjacent sub-regions 121, and each of which is a plane at the near optical axis. The method of connecting two adjacent sub-regions 121 with a transition region 122 can make the transition between each sub-region 121 smoother, avoid the situation that the connection between the two sub-regions 121 forms a sharp contact angle and is easy to break during the processing and preparation process, thereby affecting the quality of the multi-faceted optical lens 100. At the same time, when the curvature radius of the sub-region 121 is small, it can avoid the situation that the two sub-regions 121 are directly connected to form a sharp contact angle, which causes the diffraction of light at the connection between the two sub-regions 121, which is conducive to better control of the edge stray noise of the light spot, and thus is conducive to improving the optical performance of the multi-faceted optical lens 100.

[0149] It can be understood that, among the above-mentioned multiple sub-regions 121, the curvature radius of each sub-region 121 may be the same; the curvature radius of at least some of the sub-regions 121 may be different; or the curvature radius of each sub-region 121 may be different, which is not limited in this embodiment.

[0150] It can be understood that the projections of the above-mentioned sub-regions 121 on the plane perpendicular to the thickness direction X of the optically effective part 1 are all in the shape of a circular ring. Among the multiple sub-regions 121, the difference between the outer diameter D2 and the inner diameter of the circular ring projection of each sub-region 121 may be the same; the difference between the outer diameter D2 and the inner diameter of the circular ring projection of at least some of the sub-regions 121 may be different; or the difference between the outer diameter D2 and the inner diameter of the circular ring projection of each sub-region 121 may be different, which is not limited in this embodiment.

[0151] Alternatively, if Figures 8 to 10 As shown, on the tangent plane P which is parallel to the thickness direction X of the parallel optical effective portion 1 and passes through the vertex E of the first region, each transition region 122 intersects with the adjacent sub-region 121 to form a third intersection C, the transition region 122 has a fifth tangent line L5 passing through the corresponding third intersection C, the sub-region 121 has a sixth tangent line L6 passing through the corresponding third intersection C, and a third angle θ is formed between the fifth tangent line L5 and the sixth tangent line L6 passing through the same third intersection C, with the opening facing the corresponding sub-region 121, and the third angle θ is an acute angle.

[0152] Compared with the third angle θ being a right angle or an obtuse angle, setting the third angle θ to an acute angle can avoid forming a relatively sharp (even crescent-shaped) contact angle between the second area 12 and the third area 21, thereby reducing the probability of the multifaceted optical lens 100 being broken during the process of processing, preparation or use, which is beneficial to improving the quality and service life of the multifaceted optical lens 100. In addition, by setting the second angle β to an acute angle, the probability of optical diffraction occurring at the connection between the second area 12 and the third area 21 can be reduced, which is beneficial to further control the edge stray noise of the light spot of the multifaceted optical lens 100, and further beneficial to improving the optical performance of the multifaceted optical lens 100.

[0153] It can be understood that the third angle θ is an acute angle, and the third angle θ may be 0°-90°. Alternatively, the third angle θ is 5°-90°. Alternatively, the third angle θ is 10°-90°. Alternatively, the third angle θ is 15°-90°. Alternatively, the third angle θ is 20°-90°. Alternatively, the third angle θ is 25°-90°. Alternatively, the third angle θ is 30°-90°. Alternatively, the third angle θ is 35°-90°. Alternatively, the third angle θ is 40°-90°. Alternatively, the third angle θ is 45°-90°. Alternatively, the third angle θ is 50°-90°. Alternatively, the third angle θ is 55°-90°. Alternatively, the third angle θ is 60°-90°. Alternatively, the third angle θ is 65°-90°. Alternatively, the third angle θ is 70°-90°. Alternatively, the third angle θ is 70°-85°. Alternatively, the third angle θ is 70°-80°. Alternatively, the third angle θ is 75°-80°, etc., which is not limited in this embodiment.

[0154] It can be understood that, among the above-mentioned multiple third angles θ, the third angles θ corresponding to each third intersection C may be the same; or the third angles θ corresponding to at least some of the third intersections C may be different; or the third angles θ corresponding to each third intersection C may be different, and this embodiment is not limited to this.

[0155] In addition, in order to improve the control of the edge stray noise of the light spot, it can also be achieved by coating the second area 12. Specifically, Figure 7 As shown, an attenuation layer 12a is provided on the second area 12. By providing the attenuation layer 12a, the light irradiated on the second area 12 can be absorbed and scattered, thereby reducing the intensity of the light, which is beneficial to reducing the edge stray noise of the light spot, thereby improving the optical performance of the multi-faceted optical lens 100 to adapt to the use situation that requires a higher optical signal transmission rate.

[0156] Optionally, the attenuation layer 12a includes but is not limited to an attenuation coating, an attenuation film, an attenuation sheet, and the like.

[0157] Optionally, the material of the attenuation layer 12a includes titanium pentoxide, aluminum oxide, etc. and their corresponding mixture materials (such as titanium pentoxide and silicon dioxide mixture materials, etc.), which is not limited in this embodiment. For example, the material of the attenuation layer 12a includes titanium pentoxide. Since titanium pentoxide has a high refractive index, wear resistance, high temperature resistance and corrosion resistance, the light will be refracted and scattered when passing through, so that the attenuation layer 12a can reduce the intensity of the light, which is beneficial to reduce the edge stray noise of the light spot; at the same time, it can improve the stability of the attenuation layer 12a in different environments, which is beneficial to extend the service life of the attenuation layer 12a. For another example, the material of the attenuation layer 12a includes aluminum oxide, and micro holes and prism structures are formed on the surface of aluminum oxide through hydrolysis, which can reflect and refract the light passing through the attenuation layer 12a multiple times and absorb the light, thereby reducing the intensity of the light passing through the attenuation layer 12a, which is beneficial to reduce the edge stray noise of the light spot.

[0158] As an optional embodiment, the third area 21 is a plane at the near optical axis. By setting the third area 21 as a plane, it is possible to avoid focusing or scattering of light passing through the third area 21, thereby avoiding the influence of the light passing through the third area 21 on the light spot of the multi-faceted optical lens 100, which is beneficial to improving the optical performance of the multi-faceted optical lens 100.

[0159] As an optional embodiment, the third region 21 forms a projection on a plane perpendicular to the thickness direction X of the optically effective portion 1, and the distance between the two farthest points on the projection is less than or equal to 600 μm. In this way, by limiting the range of the third region 21 to 600 μm, it is beneficial to reduce the size of the multi-faceted optical lens 100, thereby facilitating the miniaturization of the multi-faceted optical lens 100.

[0160] Optionally, the third region 21 forms a projection on a plane perpendicular to the thickness direction X of the optically effective portion 1, and the distance between the two farthest points on the projection is less than or equal to 600 μm, and can be, for example, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, 150 μm, 160 μm, 170 μm, 180 μm, 190 μm, 200 μm, 210 μm, 220 μm, 230 μm, 240 μm, 250 μm, 260 μm, 270 μm, 280 μm, The present invention relates to a novel optical structure having an optical element of 290μm, 300μm, 310μm, 320μm, 330μm, 340μm, 350μm, 360μm, 370μm, 380μm, 390μm, 400μm, 410μm, 420μm, 430μm, 440μm, 450μm, 460μm, 470μm, 480μm, 490μm, 500μm, 510μm, 520μm, 530μm, 540μm, 550μm, 560μm, 570μm, 580μm, 590μm, 600μm, etc., which is not limited to the present embodiment.

[0161] Optionally, the third region 21 forms a projection on a plane perpendicular to the thickness direction X of the optically effective portion 1, and the distance between the two points with the longest distance on the projection is less than or equal to 600 μm, which may be the distance between the two points with the longest distance on the projection is less than or equal to 600 μm. Alternatively, the distance between the two points with the longest distance on the projection is less than or equal to 590 μm. Alternatively, the distance between the two points with the longest distance on the projection is less than or equal to 580 μm. Alternatively, the distance between the two points with the longest distance on the projection is less than or equal to 570 μm. Alternatively, the distance between the two points with the longest distance on the projection is less than or equal to 560 μm. Alternatively, the distance between the two points with the longest distance on the projection is less than or equal to 550 μm. Alternatively, the distance between the two points with the longest distance on the projection is less than or equal to 540 μm. Alternatively, the distance between the two points with the longest distance on the projection is less than or equal to 530 μm. Alternatively, the distance between the two points with the longest distance on the projection is less than or equal to 520 μm. Alternatively, the distance between the two points with the longest distance on the projection is less than or equal to 510 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 500 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 490 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 480 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 470 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 460 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 450 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 440 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 430 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 420 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 410 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 400 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 390 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 380 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 370 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 360 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 350 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 340 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 330 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 320 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 310 μm.Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 300 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 290 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 280 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 270 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 260 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 250 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 240 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 230 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 220 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 210 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 200 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 190 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 180 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 170 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 160 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 150 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 140 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 130 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 120 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 110 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 100 μm. Alternatively, the distance between the two points on the projection that are the farthest apart is less than or equal to 90 μm, and so on, which are not limited in this embodiment.

[0162] It can be understood that, since the third region 21 is arranged around the outer periphery of the second region 12, the distance between the two most distant points on the projection formed by the third region 21 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is greater than the outer diameter D2 of the circular projection formed by the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1. For example, if the outer diameter D2 of the circular projection formed by the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 80 μm, the distance between the two most distant points on the projection formed by the third region 21 on the plane perpendicular to the thickness direction X of the optically effective portion 1 may be 100 μm; if the outer diameter D2 of the circular projection formed by the second region 12 on the plane perpendicular to the thickness direction X of the optically effective portion 1 is 150 μm, the distance between the two most distant points on the projection formed by the third region 21 on the plane perpendicular to the thickness direction X of the optically effective portion 1 may be 200 μm.

[0163] It can be understood that the third area 21 may cover the entire supporting portion 2 or at least a portion of the entire supporting portion 2, which is not limited in this embodiment.

[0164] Optionally, the shape of the multifaceted optical lens 100 includes but is not limited to a cylinder or a polygon. By setting the multifaceted optical lens 100 to be a cylinder or a polygon, the multifaceted optical lens 100 can be adapted to a variety of usage scenarios, which is conducive to improving the applicability of the multifaceted optical lens 100.

[0165] See also Figures 11 to 13 , Fig.11 It is a schematic structural diagram of a multi-faceted optical lens (the light-emitting surface has a first area) provided in an embodiment of the present application; Fig.12 It is a schematic structural diagram of a multi-faceted optical lens (the light incident surface has a first area) provided in an embodiment of the present application; Fig.13 1 is a schematic diagram of the structure of a multi-faceted optical lens (the light exiting surface and the light entering surface form an angle) provided in an embodiment of the present application. It can be understood that the multi-faceted optical lens 100 also includes a light entering surface M and a light exiting surface N. In some embodiments, the diameter of the light spot and the edge stray noise can be controlled by providing a first area 11, a second area 12 and a third area 21 on the light entering surface M and the light exiting surface N.

[0166] An exemplary example is Fig.11 As shown, the light emitting surface N has a first area 11 , a second area 12 and a third area 21 .

[0167] Another exemplary example is Fig.12 As shown, the light incident surface M has a first area 11 , a second area 12 and a third area 21 .

[0168] Another exemplary example is Fig.13 As shown, both the light incident surface M and the light emitting surface N have a first area 11 , a second area 12 and a third area 21 .

[0169] By arranging the first area 11, the second area 12 and the third area 21 on the light input surface M and the light output surface N, it is possible to reduce the diameter of the light spot by controlling the size and curvature of the first area 11, and weaken the edge stray noise of the light spot by the second area 12, without affecting the center quality of the light spot focused by the polyhedral optical lens 100, which is beneficial to improving the transmission quality of the polyhedral optical lens 100 at a higher transmission rate of the optical signal and reducing the size of the polyhedral optical lens 100, thereby facilitating the miniaturization of the polyhedral optical lens 100, and improving the optical performance of the polyhedral optical lens 100 and the yield rate of adaptation to the laser. In addition, compared with the method of setting the first area 11, the second area 12 and the third area 21 on the light input surface M or the light output surface N, the method of setting the first area 11, the second area 12 and the third area 21 on the light input surface M and the light output surface N can collect the light through the light input surface M and then focus the light through the light output surface N, which is beneficial to further reduce the diameter of the light spot and improve the effect of weakening the edge stray noise of the light spot.

[0170] One option, such as Fig.11 and Fig.12 As shown, the light-incoming surface M is parallel to the light-emitting surface N. By arranging the light-incoming surface M and the light-emitting surface N in parallel, the light beam can be better transmitted, the energy loss of the light beam can be reduced, and the optical performance of the multi-faceted optical lens 100 can be improved.

[0171] Alternatively, if Fig.13 As shown, an angle is formed between the light-incoming surface M and the light-emitting surface N. By adopting the method of forming an angle between the light-incoming surface M and the light-emitting surface N, the multi-faceted optical lens 100 can be used to refract the light beam, thereby changing the direction of the light path, so that the multi-faceted optical lens 100 can meet the scene where the transmission direction of the light path needs to be changed, which is conducive to improving the applicability of the multi-faceted optical lens 100.

[0172] In some optional implementations, the material of the multi-faceted optical lens 100 includes, but is not limited to, polyetherimide, single crystal silicon, polycrystalline silicon, silica glass, borosilicate glass, or acrylic. The multi-faceted optical lens 100 has high transparency, thermal stability, and good mechanical properties through the use of materials such as polyetherimide, single crystal silicon, polycrystalline silicon, silica glass, borosilicate glass, or acrylic, which is beneficial to improving the overall structural stability of the multi-faceted optical lens 100 and achieving good optical properties of the multi-faceted optical lens 100.

[0173] See also Fig.14 and Fig.15 , Fig.14 is a structural schematic diagram of a lens array provided in an embodiment of the present application; Fig.15 It is another structural schematic diagram of the lens array provided by the embodiment of the present application. In the second aspect, the embodiment of the present application also discloses a lens array 200, including a plurality of polyhedral optical lenses 100 as described in the first aspect above, and the plurality of polyhedral optical lenses 100 are arranged in an array. The plurality of polyhedral optical lenses 100 arranged in an array can control multiple light beams, and each polyhedral optical lens 100 controls one light beam separately, which can reduce the diameter of the light spot and weaken the edge stray noise of the light spot without affecting the center quality of the light spot focused by the polyhedral optical lens 100, which is beneficial to improve the optical performance and applicability of the lens array 200.

[0174] It can be understood that the multiple multi-faceted optical lenses 100 arranged in the above array can control multiple light beams, which can be multiple light beams in the same direction; or multiple light beams with at least some different directions; or multiple light beams with all different directions, which is not limited in this embodiment.

[0175] Optionally, the plurality of multi-faceted optical lenses 100 may be arranged in an array, such as Fig.14 As shown, a plurality of multi-faceted optical lenses 100 are arranged in sequence along a first direction Y; or, as shown in FIG. Fig.15 As shown, among the multiple polyhedral optical lenses 100, a part is arranged in sequence along the first direction Y, and another part is stacked on top of the previous part; it can also be that the multiple polyhedral optical lenses 100 are arranged in sequence around the same axis, and so on. This embodiment is not limited to this.

[0176] See also Fig.16 , Fig.16 It is a structural schematic diagram of an optical module provided by an embodiment of the present application. In the third aspect, the embodiment of the present application also discloses an optical module 300, including the polyhedral optical lens 100 as described in the first aspect above or the lens array 200 as described in the second aspect above. The optical module 300 includes but is not limited to an optical receiving module, an optical transmitting module, an optical transceiver integrated module, and an optical forwarding module. The optical module 300 having the polyhedral optical lens 100 as described in the first aspect above or the lens array 200 as described in the second aspect above can also reduce the diameter of the light spot and weaken the edge stray noise of the light spot without affecting the center quality of the light spot focused by the polyhedral optical lens 100, which is beneficial to improving the optical performance and applicability of the optical module 300.

[0177] See also Fig.17 , Fig.174. The embodiment of the present application further discloses an optical communication device 400, including the optical module 300 as described in the third aspect. The optical communication device 400 includes but is not limited to optical fiber communication equipment, laser wireless communication equipment, wireless network equipment, radar equipment, and detection equipment.

[0178] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-faceted optical lens, characterized in that: include: an optically effective portion, the optically effective portion comprising a first region and a second region annularly arranged on the periphery of the first region, the first region being a convex surface at the near optical axis, the second region being a concave surface at the near optical axis, and a projection of the first region on a plane perpendicular to the thickness direction of the optically effective portion being a circle, a projection of the second region on a plane perpendicular to the thickness direction of the optically effective portion being a circular ring, and an outer diameter of a projection of the second region on a plane perpendicular to the thickness direction of the optically effective portion being linearly related to a diameter of a projection of the first region on a plane perpendicular to the thickness direction of the optically effective portion; and A supporting portion, the supporting portion is arranged at the periphery of the optically effective portion, the supporting portion includes a third area, and the third area is arranged around the periphery of the second area; Among them, the second area includes multiple sub-areas and multiple transition areas, each of the sub-areas is concave at the low light axis, the multiple sub-areas are arranged in sequence along the first direction, each transition area is respectively connected between two adjacent sub-areas, and each transition area is a plane at the low light axis, and the first direction is the direction from the first area to the second area.

2. The multifaceted optical lens according to claim 1, characterized in that: The convex surface is an ellipsoidal surface or a spherical surface; and / or, The concave surface is a parabola or a hyperbola.

3. The multifaceted optical lens according to claim 1, characterized in that: The diameter of the projection of the first region on a plane perpendicular to the thickness direction of the optically effective portion is 50 μm-150 μm; and / or, An outer diameter of a projection of the second region on a plane perpendicular to a thickness direction of the optically effective portion is less than or equal to 400 μm.

4. The multifaceted optical lens according to claim 3, characterized in that: The diameter of the projection of the first region on a plane perpendicular to the thickness direction of the optically effective portion is 50 μm-80 μm; and / or, An outer diameter of a projection of the second region on a plane perpendicular to the thickness direction of the optically effective portion is less than or equal to 150 μm.

5. The multifaceted optical lens according to claim 1, characterized in that: On a tangent plane parallel to the thickness direction of the optically effective portion and passing through the vertex of the first region, the first region and the second region intersect to form a first intersection, the first region has a first tangent line passing through the first intersection, the second region has a second tangent line passing through the first intersection, and a first angle is formed between the first tangent line and the second tangent line, the first angle being an acute angle; and / or, On a tangent plane parallel to the thickness direction of the optically effective portion and passing through the vertex of the first region, the second region intersects with the third region to form a second intersection, the second region has a third tangent passing through the second intersection, the third region has a fourth tangent passing through the second intersection, and a second angle is formed between the third tangent and the fourth tangent, which opens toward the third region, and the second angle is an acute angle.

6. The multifaceted optical lens according to claim 5, characterized in that: The first angle is 40°-80°; and / or, The second angle is 70°-85°.

7. The multifaceted optical lens according to any one of claims 1 to 6, characterized in that: On a tangent plane parallel to the thickness direction of the optically effective portion and passing through the vertex of the first region, each of the transition regions intersects with the adjacent sub-regions to form a third intersection; The transition zone has a fifth tangent passing through the corresponding third intersection, and the sub-area has a sixth tangent passing through the corresponding third intersection. The fifth tangent and the sixth tangent passing through the same third intersection form a third angle opening toward the corresponding sub-area, and the third angle is an acute angle.

8. The multifaceted optical lens according to any one of claims 1 to 6, characterized in that: An attenuation layer is arranged on the second area.

9. The multifaceted optical lens according to any one of claims 1 to 6, characterized in that: The third region forms a projection on a plane perpendicular to the thickness direction of the optically effective portion, and the distance between two points on the projection that are farthest apart is less than or equal to 600 μm; and / or, The third area is a plane at the near optical axis.

10. The multifaceted optical lens according to any one of claims 1 to 6, characterized in that: The multi-faceted optical lens further comprises a light-incoming surface and a light-outgoing surface, and the light-incoming surface and / or the light-outgoing surface comprises the first region, the second region and the third region; The light-incoming surface and the light-emitting surface are parallel to each other, or an angle is formed between the light-incoming surface and the light-emitting surface.

11. A lens array, characterized in that: It comprises a plurality of polyhedral optical lenses as described in any one of claims 1 to 10, wherein the plurality of polyhedral optical lenses are arranged in an array.

12. An optical module, characterized in that: It comprises a multi-faceted optical lens as described in any one of claims 1 to 10 or a lens array as described in claim 11.

13. An optical communication device, characterized in that: Comprising the optical module as claimed in claim 12.

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