Three-piece type folding and super hybrid optical imaging lens

Abstract

The invention discloses a three-piece type folding and super hybrid optical imaging lens, which sequentially comprises a first lens with positive focal power along an optical axis from an object side to an image side, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with positive focal power and a fifth lens with negative focal power along an optical axis, a fifth lens and a sixth lens from the object side to the image side, the second lens has positive focal power, the object side surface of the second lens is convex or concave, and the image side surface of the second lens is convex; and the super lens has negative focal power, the object side surface of the super lens is a plane, and the image side surface of the super lens is a plane. The three-piece type folding and super hybrid optical imaging lens has the advantages of being capable of reducing the size, resistant to high and low temperature, low in distortion and capable of guaranteeing high imaging quality. Through the structural design of the first lens, the second lens and the super lens, the visual angle of the optical system can be enlarged, high imaging quality can be obtained, the urgent demand of the market for small-size high-performance lenses is met, and the lens is suitable for the intelligent consumer electronics fields of intelligent doorbells, sweeping robots, AR glasses and the like.

Description

Technical Field

[0001] The present invention relates to the field of optical imaging technology, and in particular to a three-piece refractive-super hybrid optical imaging lens. Background Art

[0002] A superlens is a two-dimensional planar lens based on a micro-nanostructure. It controls the wavefront on a traditional medium through an artificial sub-wavelength unit structure on the surface, and is independent of changes in the thickness of the medium. Traditional imaging optical systems are usually composed of refractive elements such as different types of glass lenses, and the control of the light wavefront is achieved through the phase shift accumulated during the propagation of light in the medium. In comparison, the thickness of the superlens medium is relatively small compared to the overall volume of the optical system, which is conducive to the miniaturization of the optical system. Moreover, since both sides of the superlens are flat, there is no need to change the curvature of the lens to achieve focusing or divergence of the light, which reduces the introduction of aberrations such as field curvature, spherical aberration, and coma, and improves the performance of the overall system.

[0003] In the home, vision lenses can be used in smart home systems such as smart robot vacuums, smart doorbells, and smart security monitoring systems. Robot vision lenses enable remote home monitoring, intelligent identification, and automated control, improving home safety and convenience. As the application of robotic vision lenses expands, performance requirements are also increasing. However, existing robotic vision lenses on the market offer low resolution and bulky designs. Furthermore, when robotic vision lenses utilize all-plastic aspherical lenses, the high thermal expansion coefficient of the plastic can cause focus drift in high and low temperature environments, severely impacting clarity. Using spherical glass lenses results in a larger lens size. Therefore, designing a lens that is athermal, compact, has low distortion, and offers high resolution is crucial. Summary of the Invention

[0004] In view of this, in order to provide a lens that can reduce the volume, withstand high and low temperatures, have low distortion, and ensure high imaging quality, the present invention provides a three-piece refractive index hybrid optical imaging lens.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A three-element refractive-superiore hybrid optical imaging lens, comprising, from the object side to the image side, along the optical axis: a first lens having positive focal power, with the object-side surface of the first lens being convex and the image-side surface being concave; a second lens having positive focal power, with the object-side surface of the second lens being convex or concave and the image-side surface being convex; and a super lens having negative focal power, with the object-side surface of the super lens being flat and the image-side surface being flat.

[0007] The three lenses do not touch each other or only touch at the edges, are immovable relative to each other, and the object sides and image surfaces of the first lens and the second lens are both plastic aspherical surfaces. The meta-lens includes a double-plane substrate and micro-nano structures, and the micro-nano structures are provided on the object side and / or the image side and / or both sides of the substrate. The working wavelength range is 400 - 700 nm, the maximum field of view angle DFOV ≥ 60°, the total length TTL ≤ 4.5 mm, and the maximum image height ImgH ≥ 4.83.

[0008] Meanwhile, the three-piece refractive meta hybrid optical imaging lens satisfies 0.9 < TTL / f < 1.08, where f is the effective focal length of the three-piece refractive meta hybrid optical imaging lens, and TTL is the total length of the three-piece refractive meta hybrid optical imaging lens.

[0009] By controlling this ratio, the optical power can be reasonably distributed, the trend of light rays can be effectively controlled, the deflection angle during the propagation of light rays can be reduced, the generation of off-axis aberrations can be decreased, the overall resolution of the lens can be improved, and at the same time, the lens structure can be made compact, which is beneficial to miniaturization.

[0010] As a further improvement of the above technical solution:

[0011] As an optimized solution of the above technical solution, the three-piece refractive meta hybrid optical imaging lens satisfies the following conditional formula: 0.97 < |f1 / f| < 1.42, where f1 is the effective focal length of the first lens of the three-piece refractive meta hybrid optical imaging lens, and f is the effective focal length of the three-piece refractive meta hybrid optical imaging lens. The focal length of the first lens is positive and relatively small, which can effectively converge large-aperture light rays, compress the aperture, and is beneficial to increasing the light input.

[0012] As an optimized solution of the above technical solution, the three-piece refractive meta hybrid optical imaging lens satisfies the following conditional formula: 1.05 < |f

[0012] / f| < 1.12, where f 12 is the combined focal length of the first lens and the second lens of the three-piece refractive meta hybrid optical imaging lens, and f is the effective focal length of the three-piece refractive meta hybrid optical imaging lens.

[0013] By controlling this ratio, it is beneficial to gently converge the large-aperture light rays transmitted in front of the lens, reduce the introduction of high-order aberrations, compress the system aperture, realize the gentle transmission of light rays inside the three-piece refractive meta hybrid optical imaging lens, reduce the generation of high-order aberrations, and improve the overall performance of the three-piece refractive meta hybrid optical imaging lens.

[0014] As an optimized solution of the above technical solution, the three-piece refractive meta hybrid optical imaging lens satisfies the following conditional formula: 0.53 < BFL / TTL < 0.6, where BFL is the back focal length of the three-piece refractive meta hybrid optical imaging lens, and TTL is the total length of the three-piece refractive meta hybrid optical imaging lens.

[0015] Controlling its ratio helps reduce lens reflections and the risk of ghost images. It also helps smooth the transition of rear-end light, reduces deflection angles, avoids the introduction of high-order vertical aberrations, and improves resolution.

[0016] As an optimization solution of the above technical solution, the three-piece hybrid optical imaging lens satisfies the following conditional formula: 0.29 <D mAx / TTL<0.3,D mAx is the effective aperture of the first lens, and TTL is the total length of the three-piece hybrid optical imaging lens.

[0017] Controlling its value can effectively reduce the head size of the lens.

[0018] As an optimization solution for the above technical solution, the three-piece refractive index hybrid optical imaging lens satisfies the following condition: 0.056<TTL / H / FOV<0.062, wherein TTL is the total length of the three-piece refractive index hybrid optical imaging lens, H is the diagonal image height of the three-piece refractive index hybrid optical imaging lens, and FOV is the maximum field of view angle of the three-piece refractive index hybrid optical imaging lens.

[0019] Controlling its numerical value is conducive to the miniaturization of the lens.

[0020] As an optimization solution of the above technical solution, the three-piece hybrid optical imaging lens satisfies the following conditional formula: 0.11 <CT1 / TTL<0.14,

[0021] Wherein, TTL is the total length of the three-piece hybrid optical imaging lens, and CT1 is the thickness of the first lens on the optical axis.

[0022] A larger air gap between the first and second lens elements helps reduce reflections and the risk of ghosting. This larger gap also helps reduce the diameter of the rear port and smooth the transition of light. Controlling this ratio effectively suppresses ghosting and improves resolution.

[0023] As an optimization solution of the above technical solution, the three-piece hybrid optical imaging lens satisfies the following condition: 0.79<R1 / R2<0.98,

[0024] Wherein, R1 is the curvature radius of the object side surface of the first lens, and R2 is the curvature radius of the image side surface of the first lens.

[0025] The shape of the first lens is conducive to the smooth convergence of light and reduces the sensitivity of the first lens.

[0026] As an optimization solution of the above technical solution, the three-piece hybrid optical imaging lens satisfies the condition: 0.67<(CT 12 +CT 23 +CT 34 ) / TTL<0.69,

[0027] Among them, CT 12 is the air space between the first lens and the second lens, CT 23 is the air space between the second lens and the super lens, CT 34 is the air gap between the metalens and the IR&CG sheet, and TTL is the on-axis distance from the object side of the first lens to the imaging surface.

[0028] Controlling the size of the ratio can make the lenses compact and facilitate miniaturization.

[0029] In the above scheme, the first lens, the second lens, and the super lens are all aspherical lenses. The aspherical surface has a large degree of freedom, so the aspherical lens has a significantly stronger ability to correct light segregation and aberration than the spherical lens. The first lens, the second lens, and the third lens of the aspherical lens are beneficial to improving the lens resolution and correcting the lens distortion. At the same time, they are also beneficial to correcting the angle of the light emitted from the lens, so that they can better match the photosensitive element.

[0030] As an optimization solution to the above technical solution, the three-piece refractive index hybrid optical imaging lens satisfies the condition: TTL≤4.5mm, wherein DFOV is the full field of view of the three-piece refractive index hybrid optical imaging lens, and TTL is the on-axis distance from the object side of the first lens to the imaging surface.

[0031] As an optimization solution of the above technical solution, it further includes an aperture, and the aperture is arranged between the first lens and the second lens.

[0032] In the above scheme, an aperture stop STO is arranged between the first lens L1 and the second lens L2. Through this arrangement, the light beam intensity can be adjusted with a simple structure, while at the same time it is beneficial to increase the CRA of the three-piece refractive index hybrid optical imaging lens, which is further conducive to matching the corresponding image sensor.

[0033] An optimized solution of the above technical solution is to further include IR and CG sheets, wherein the IR and CG sheets are arranged between the super lens and the imaging surface.

[0034] Compared with the existing technology, the beneficial effects of the present invention are:

[0035] The three-piece refractive-super hybrid optical imaging lens of the present invention has the beneficial effects of being able to reduce volume, being resistant to high and low temperatures, having low distortion, and being able to ensure high imaging quality. Through the structural design of the first lens, the second lens, and the super lens, the viewing angle of the optical system can be expanded, and high imaging quality can be obtained.

[0036] The present invention meets the market's urgent demand for small-volume, high-performance lenses and is suitable for smart consumer electronics such as smart doorbells, sweeping robots, and AR glasses. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a lens cross-section and optical path diagram of the three-element refractive-super hybrid optical imaging lens according to Example 1 of the present invention.

[0038] Figure 2 Graph showing the distortion of the three-element hybrid optical imaging lens system according to Example 1 of the present invention.

[0039] Figure 3 This is a defocus curve diagram of the three-element refractive-super hybrid optical imaging lens at 20°C according to Example 1 of the present invention.

[0040] Figure 4 This is a defocus curve diagram of the three-element refractive-super hybrid optical imaging lens at -40°C according to Example 1 of the present invention.

[0041] Figure 5 This is a defocus curve diagram of the three-element refractive-super hybrid optical imaging lens at 80°C according to Example 1 of the present invention.

[0042] Figure 6 This is a lens cross-section and optical path diagram of a three-element refractive-super hybrid optical imaging lens according to Example 2 of the present invention.

[0043] Figure 7 This is a distortion curve diagram of the three-element refractive-super hybrid optical imaging lens according to Example 2 of the present invention.

[0044] Figure 8 This is a defocus curve diagram of the three-element refractive-super hybrid optical imaging lens at 20°C according to Example 2 of the present invention.

[0045] Figure 9 This is a defocus curve diagram of the three-element refractive-super hybrid optical imaging lens according to Example 2 of the present invention at -40°C.

[0046] Figure 10 This is a defocus curve diagram of the three-element refractive-super hybrid optical imaging lens at 80°C according to Example 2 of the present invention.

[0047] Figure 11 This is a lens cross-section and optical path diagram of a three-element refractive-super hybrid optical imaging lens according to Example 3 of the present invention.

[0048] Figure 12 Graph showing the distortion of the three-element hybrid optical imaging lens system according to Example 3 of the present invention.

[0049] Figure 13 This is a defocus curve diagram of the three-element refractive-super hybrid optical imaging lens at 20°C according to Example 3 of the present invention.

[0050] Figure 14 This is a defocus curve diagram of the three-element refractive-super hybrid optical imaging lens according to Example 2 of the present invention at -40°C.

[0051] Figure 15 This is a defocus curve diagram of the three-element refractive-super hybrid optical imaging lens at 80°C according to Example 3 of the present invention.

[0052] Description of the drawings: 1. First lens; 2. Second lens; 3. Super lens; 4. Aperture; 5. IR&CG plate; 6. Imaging surface. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0054] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0056] In the professional description of this technical solution, the object side of the lens refers to the side of the lens facing the subject, and the image side refers to the side of the lens facing the imaging surface 6. When a section is made at any point on the transit surface of the object side surface of the lens, the object side surface is always on the image side of the section, and its radius of curvature is positive, then the object side surface of the lens is convex; otherwise, the object side surface of the lens is concave. When a section is made at any point on the transit surface of the image side surface of the lens, the image side surface is always on the object side of the section, and its radius of curvature is negative, then the image side surface of the lens is convex; otherwise, the image side surface of the lens is concave. If a section is made at any point on the object side surface or the transit surface of the image side surface of the lens, the object side surface or the image side surface is partially on the image side of the section and partially on the object side of the section, then there is an inflection point on the surface, and the above method still applies to the judgment of the convexity of the object side and image side surfaces near the optical axis.

[0057] In addition, the aspheric curve equation of each aspheric lens is expressed as follows:

[0058]

[0059] Among them, Z is the distance vector height of the aspheric surface from the origin of the aspheric surface when it is at a height of r along the optical axis, c is the paraxial curvature of the aspheric surface (curvature radius R = 1 / c, which is the inverse of the curvature); k is the cone coefficient; Ai is the i-th order coefficient of the aspheric surface. The high-order coefficients used in the present invention are A4, A6, A8, A10, A12, A14, and A16.

[0060] In addition, the phase plane equation of each metalens 3 is expressed as follows

[0061]

[0062] Wherein, Φ is the accumulated phase difference of light rays, N is the number of polynomial coefficients in the series, Ai is the coefficient of ρ raised to the power of 2i, ρ is the normalized radial aperture coordinate, and M is the diffraction order. The front camera of the present invention mainly includes lenses with optical power fixed in sequence from the object side to the image side along the optical axis, namely a first lens 1, a second lens 2, and a metalens 3.

[0063] The first lens 1 has positive refractive power, and its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, which is beneficial for collecting light with a large field of view, increasing the luminous flux, and diffusing the light to the rear.

[0064] The second lens 2 has positive refractive power, and its object-side surface is convex or concave near the optical axis, which can collect as much light as possible into the rear optical system. The image-side surface is convex near the optical axis, which can quickly transfer light to the rear optical system and reduce the system aperture.

[0065] The first lens 1 and the second lens 2 are both made of plastic aspherical surfaces.

[0066] The third lens is a metalens 3, whose object-side surface is flat near the optical axis, and whose image-side surface is also flat near the optical axis. Through its surface microstructure, it receives large-diameter light from the front and smoothly transitions it to the back, shortening the optical path difference between the center and the periphery of the field of view, reducing distortion and improving illumination. It also effectively corrects paraxial spherical aberration, reduces peripheral field curvature, and improves resolution.

[0067] The superlens 3 includes a substrate and a micro-nano structure (the gray part in the figure), and the substrate is made of glass.

[0068] The three lenses do not touch each other or only touch at the edges, and cannot move relative to each other. The object side and image side surfaces of each lens are aspherical, which can effectively reduce the thickness of the lens. At the same time, the optical lens meets the 0.9 <TTL / f<1.08,0.97<|f1 / f|<1.42,1.05<|f 12 / f|<1.12,0.53 <BFL / TTL<0.6,

[0069] f1 is the effective focal length of the first lens 1 of the optical lens, f is the focal length of the optical lens, TTL is the total length of the optical lens, f1 is the effective focal length of the first lens 1 of the optical lens, f 12 is the combined focal length of the first lens 1 and the second lens 2 of the optical lens, and BFL is the back focal length of the optical lens.

[0070] An aperture 4STO is arranged between the first lens 1L1 and the second lens 2L2. This arrangement allows the light beam intensity to be adjusted with a simple structure, while also facilitating an increase in the CRA of the three-piece refractive index hybrid optical imaging lens, thereby facilitating matching with a corresponding image sensor.

[0071] An IR&CG sheet 5 is provided between the superlens 3 and the imaging plane 6 .

[0072] Specific examples of imaging devices applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0073] Example 1

[0074] The design parameters of the three-element hybrid optical imaging lens of this embodiment can be shown in the following table:

[0075]

[0076] Other detailed aspheric parameters are shown in the following table:

[0077]

[0078]

[0079] Other detailed parameters of the metalens 3 are shown in the following table:

[0080]

[0081] like Figure 1 As shown, in Example 1, the object-side surface of the first lens 1 is convex, and the image-side surface is concave;

[0082] The object-side surface of the second lens 2 is convex, and the image-side surface is convex;

[0083] The object side surface and the image side surface of the metalens 3 are both flat surfaces;

[0084] The superlens 3 includes a substrate and a micro-nano structure. The micro-nano structure is arranged on the object side and the image side of the substrate. The substrate is made of glass.

[0085] like Figure 2 This is a distortion curve diagram of the three-element refractive-super hybrid optical imaging lens of this embodiment. As shown in the figure, the optical distortion of the lens is less than 1.5%; Figure 3 2 is a defocus curve diagram of the three-element refractive-super hybrid optical imaging lens of this embodiment at 20°C. The defocus curve shows the relationship between the meridional and sagittal MTFs and the defocus amount for different fields of view at a set frequency of 100 lp / mm. Figure 4 This is the defocus curve of this embodiment at -40°C. Compared with the defocus curve at 20°C, there is no obvious defocus and the image quality is clear. Figure 5 This is the defocus curve of this embodiment at 80°C. Compared with the defocus curve at 20°C, there is no obvious defocus and the image quality is clear.

[0086] Example 2

[0087] The design parameters of the three-element hybrid optical imaging lens of this embodiment can be shown in the following table:

[0088] Other detailed aspheric parameters are shown in the following table:

[0089]

[0090] Other detailed parameters of the metalens 3 are shown in the following table:

[0091]

[0092] like Figure 6 As shown, the object side surface of the first lens 1 is convex, and the image side surface is concave; the object side surface of the second lens 2 is concave, and the image side surface is convex;

[0093] The object side and image side of the metalens 3 are both flat;

[0094] The superlens 3 includes a substrate and a micro-nano structure, wherein the micro-nano structure is disposed on the object side of the substrate.

[0095] like Figure 7 This is a distortion curve diagram of the three-element refractive-super hybrid optical imaging lens of this embodiment. As shown in the figure, the optical distortion of the lens is less than 1.5%; Figure 8 2 is a defocus curve diagram of the three-element refractive-super hybrid optical imaging lens of this embodiment at 20°C. The defocus curve shows the relationship between the meridional and sagittal MTFs and the defocus amount for different fields of view at a set frequency of 100 lp / mm. Figure 9 This is the defocus curve of this embodiment at -40°C. Compared with the defocus curve at 20°C, there is no obvious defocus and the image quality is clear. Figure 10 This is the defocus curve of this embodiment at 80°C. Compared with the defocus curve at 20°C, there is no obvious defocus and the image quality is clear.

[0096] Example 3

[0097] The design parameters of the three-element hybrid optical imaging lens of this embodiment can be shown in the following table:

[0098]

[0099]

[0100] Other detailed aspheric parameters are shown in the following table:

[0101]

[0102] Other detailed parameters of the metalens 3 are shown in the following table:

[0103]

[0104] like Figure 11 As shown, the object side surface of the first lens 1 is convex, and the image side surface is concave;

[0105] The object side surface of the second lens 2 is concave, and the image side surface is convex;

[0106] The object side surface and the image side surface of the metalens 3 are both flat surfaces;

[0107] The superlens 3 includes a substrate and a micro-nano structure, wherein the micro-nano structure is arranged on the image side of the substrate.

[0108] like Figure 12 This is a distortion curve diagram of the three-element refractive-super hybrid optical imaging lens of this embodiment. As shown in the figure, the optical distortion of the lens is less than 1.5%; Figure 132 is a defocus curve diagram of the three-element refractive-super hybrid optical imaging lens of this embodiment at 20°C. The defocus curve shows the relationship between the meridional and sagittal MTFs and the defocus amount for different fields of view at a set frequency of 100 lp / mm. Figure 14 This is the defocus curve of this embodiment at -40°C. Compared with the defocus curve at 20°C, there is no obvious defocus and the image quality is clear. Figure 15 This is the defocus curve of this embodiment at 80°C. Compared with the defocus curve at 20°C, there is no obvious defocus and the image quality is clear.

[0109] In summary, the above-mentioned three-piece refractive-super hybrid optical imaging lens has a total optical length of less than 4.5mm, a focal length of 4.2mm, and ensures clear imaging and stable image quality within the temperature range of -40℃ to 80℃, realizing an athermal, high-definition, low-distortion, and miniaturized optical lens.

[0110] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A three-element hybrid optical imaging lens, characterized in that: From the object side to the image side along the optical axis, it includes: A first lens (1) having positive optical power, wherein the object side surface of the first lens (1) is convex and the image side surface is concave; a second lens (2) having positive optical power, wherein the object side surface of the second lens (2) is convex or concave, and the image side surface is convex; A superlens (3) having negative optical power, wherein both the object side surface and the image side surface of the superlens (3) are planes; The first lens (1) and the second lens (2) are both made of plastic aspheric surfaces, the super lens (3) comprises a substrate and a micro-nano structure, the substrate is made of glass, and the micro-nano structure is arranged on any one of the object side, image side, and both sides of the substrate; The three-piece hybrid optical imaging lens meets the following conditions: 0.9 <TTL / f<1.08; Wherein, f is the effective focal length of the three-piece refractive-hybrid optical imaging lens, and TTL is the total length of the three-piece refractive-hybrid optical imaging lens.

2. The three-element hybrid optical imaging lens according to claim 1, characterized in that: The three-piece hybrid optical imaging lens meets the following conditions: 0.97<|f1 / f|<1.42; 1.05<|f 12 / f|<1.12; Wherein f1 is the effective focal length of the first lens (1) of the three-piece hybrid optical imaging lens, f 12 It is the combined focal length of the first lens (1) and the second lens (2) of the three-piece refractive-hybrid optical imaging lens.

3. The three-element hybrid optical imaging lens according to claim 1, wherein: The three-piece hybrid optical imaging lens meets the following conditions: 0.53 <BFL / TTL<0.6; Among them, BFL is the optical back focus of the three-piece refractive-super hybrid optical imaging lens.

4. The three-element hybrid optical imaging lens according to claim 1, wherein: The three-piece hybrid optical imaging lens meets the following conditions: 0.29<D mAx / TTL<0.3; Among them D mAx is the effective aperture of the first lens (1).

5. The three-element hybrid optical imaging lens according to claim 1, wherein: The three-piece hybrid optical imaging lens meets the following conditions: 0.056<TTL / H / FOV<0.062; Wherein, H is the diagonal image height of the three-piece refractive-super hybrid optical imaging lens, and FOV is the maximum field of view of the three-piece refractive-super hybrid optical imaging lens.

6. The three-element hybrid optical imaging lens according to claim 1, wherein: The three-piece hybrid optical imaging lens meets the following conditions: 0.11 <CT1 / TTL<0.14; Wherein, CT1 is the thickness of the first lens (1) on the optical axis.

7. The three-element refractive-super hybrid optical imaging lens according to claim 1, wherein: The three-piece hybrid optical imaging lens meets the following conditions: 0.67<(CT 12 +CT 23 +CT 34 ) / TTL<0.69; Among them, CT 12 is the air space between the first lens (1) and the second lens (2), CT 23 is the air space between the second lens (2) and the super lens (3), CT 34 is the air space between the metalens (3) and the IR&CG plate (5), and TTL is the total length of the three-piece refractive-super hybrid optical imaging lens.

8. The three-element hybrid optical imaging lens according to claim 1, wherein: The three-piece hybrid optical imaging lens meets the following conditions: 0.79<R1 / R2<0.98; Wherein, R1 is the curvature radius of the object side surface of the first lens (1), and R2 is the curvature radius of the image side surface of the first lens (1).

9. The three-element hybrid optical imaging lens according to claim 1, wherein: The three-piece hybrid optical imaging lens meets the following conditions: The working band is 400-700nm, the maximum field of view DFOV≥60°, the total length TTL≤4.5mm, and the maximum image height ImgH≥4.

83. The three-element refractive-super hybrid optical imaging lens according to claim 1, characterized in that: The invention also includes an aperture (4) and an IR&CG plate (5), wherein the aperture (4) is arranged between the first lens (1) and the second lens (2), and the IR&CG plate (5) is arranged between the super lens (3) and the imaging surface (6).

Images