A vehicle-mounted surround view optical system and camera module

Abstract

The present invention discloses a vehicle-mounted surround-view optical system and a camera module. The vehicle-mounted surround-view optical system is composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens in sequence along the optical axis from the object plane to the image plane. By rationally configuring the refractive power and surface shape of each lens, the optical lens can have an ultra-wide field of view angle range while having the characteristics of good thermal stability and low cost, effectively reducing the volume of the optical system, and at the same time, better capturing object detail information, improving the optical lens's ability to capture details of the photographed object, improving the image quality of the optical lens, and improving the resolution and imaging clarity of the optical lens, so as to meet people's high-definition imaging requirements for vehicle-mounted surround-view optical lenses.

Description

Technical Field

[0001] The present application relates to the field of optical imaging, and in particular to a vehicle-mounted surround-view optical system and a camera module. Background Art

[0002] In recent years, with the country's increasing requirements for road traffic safety and vehicle safety, the use of surround-view cameras in vehicle-assisted driving systems has become increasingly widespread. A vehicle's surround-view system consists of four ultra-wide-angle cameras mounted on the front, rear, left, and right sides of the vehicle. These cameras simultaneously capture images of the vehicle's surroundings. After image processing, they ultimately create a seamless 360-degree panoramic bird's-eye view of the vehicle's perimeter. This allows the driver to clearly see all around the vehicle, effectively preventing accidents such as backing over and hitting the vehicle. The surround-view cameras can also identify parking lane signs, curbs, and nearby vehicles, significantly ensuring driving safety.

[0003] However, because automotive surround view systems operate in complex outdoor environments, they place extremely high demands on the wide-angle cameras they carry. They require not only a wide field of view but also excellent thermal stability, maintaining high resolution even in high and low temperature environments. Currently, conventional automotive lenses, in pursuit of wide angles and excellent thermal stability, are generally bulky and expensive, hindering market adoption. Summary of the Invention

[0004] In order to overcome the common problems of poor thermal stability, large size and high cost in existing surround-view camera designs, the present application provides a vehicle-mounted surround-view optical system with an ultra-wide field of view while having good thermal stability and low cost.

[0005] A vehicle-mounted surround view optical system, which is composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens in sequence from the object plane to the image plane along the optical axis;

[0006] The first lens has negative optical power, its object side surface is convex, and its image side surface is concave;

[0007] The second lens has negative optical power and a concave image side surface;

[0008] The third lens has positive refractive power, its object-side surface is convex, and its image-side surface is convex;

[0009] The fourth lens has optical power, its object-side surface is convex, and its image-side surface is convex;

[0010] The fifth lens has negative optical power, its object-side surface is concave, and its image-side surface is concave;

[0011] The sixth lens has positive refractive power, its object-side surface is convex, and its image-side surface is convex;

[0012] The optical system meets the following conditions: 186<FOV / (DT11*IamgH / TTL)<198;

[0013] Wherein, FOV is the maximum field of view of the optical system, DT11 is the maximum effective radius of the object side of the first lens, TTL is the axial distance from the object side of the first lens to the imaging surface, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface.

[0014] Preferably, the optical system satisfies the following conditions: 0.3<(f4-f5) / (f4+f5)<2.6;

[0015] 1.3<f5 / (f5+f6)<3.8;

[0016] Among them, f4 is the effective focal length of the fourth lens, f5 is the effective focal length of the fifth lens, and f6 is the effective focal length of the sixth lens.

[0017] Preferably, the optical system satisfies the following conditions: 1.7<f345 / f<3.0;

[0018] 0.5<f34 / f56<1.2;

[0019] 3.0<f56 / f<5.0;

[0020] Among them, f345 is the effective combined focal length of the third lens, the fourth lens and the fifth lens, f is the effective focal length of the optical imaging system, f34 is the combined focal length of the third lens and the fourth lens, and f56 is the combined focal length of the fifth lens and the sixth lens.

[0021] Preferably, the optical system satisfies the following conditions: 0.4<|(R1+R2) / (R2+R3)|<2.3;

[0022] -1<(R11+R12) / (R11-R12)<0;

[0023] 0<|f2 / R3|<1.3;

[0024] Among them, R1 is the curvature radius of the object side of the first lens, R2 is the curvature radius of the image side of the first lens, R3 is the curvature radius of the object side of the second lens, R11 is the curvature radius of the object side of the sixth lens, R12 is the curvature radius of the image side of the sixth lens, and f2 is the effective focal length of the second lens.

[0025] Preferably, the optical system satisfies the following condition: 0.5<(SAG1-SAG3) / (SAG1+SAG3)<1.4;

[0026] Among them, SAG1 is the distance from the maximum effective aperture of the objective side of the first lens to the intersection of the objective side of the first lens and the optical axis in the direction parallel to the optical axis, and SAG3 is the distance from the maximum effective aperture of the objective side of the second lens to the intersection of the objective side of the second lens and the optical axis in the direction parallel to the optical axis.

[0027] Preferably, the optical system satisfies the following conditions: 2.0<CT6 / SAG11+SAG12<4.5;

[0028] Among them, CT6 is the center thickness of the sixth lens on the optical axis, SAG11 is the distance from the maximum effective aperture of the object side of the sixth lens to the intersection of the object side of the sixth lens and the optical axis parallel to the optical axis, and SAG12 is the distance from the maximum effective aperture of the image side of the sixth lens to the intersection of the image side of the sixth lens and the optical axis parallel to the optical axis.

[0029] Preferably, the optical system satisfies the following conditions: 0.3<DT11 / SAG2<2.6;

[0030] Among them, SAG2 is the distance from the maximum effective aperture of the image side surface of the first lens to the intersection of the image side surface of the first lens and the optical axis in the direction parallel to the optical axis, and DT11 is the maximum effective radius of the object side surface of the first lens.

[0031] Preferably, the optical system satisfies the following conditions: the second lens, the fourth lens, the fifth lens and the sixth lens are aspherical lenses, and the first lens and the third lens are spherical lenses;

[0032] The aperture is located between the third lens and the fourth lens.

[0033] Preferably, the F number of the optical system is 2.0;

[0034] The full field of view (FOV) of the optical system satisfies: FOV>200°;

[0035] The TTL of the lens of the optical system satisfies: TTL≤15.8mm.

[0036] On the other hand, an embodiment of the present application further provides a camera module, which includes at least an optical lens, in which the above-mentioned vehicle-mounted surround view optical system is installed.

[0037] Compared with the prior art, the present invention has the following advantages:

[0038] The vehicle-mounted surround-view optical system and camera module of the embodiment of the present invention are composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens in sequence along the optical axis from the object plane to the image plane. By rationally configuring the refractive power and surface shape of each lens, the optical lens can have an ultra-wide field of view while having good thermal stability and low cost, effectively reducing the volume of the optical system. At the same time, it can also better capture object detail information, improve the optical lens's ability to capture details of the photographed object, improve the image quality of the optical lens, and improve the resolution and imaging clarity of the optical lens to meet people's high-definition imaging requirements for vehicle-mounted surround-view optical lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments.

[0040] Figure 1 Schematic diagram of the structure of the optical system or camera module of Example 1 of the present application;

[0041] Figure 2 axial chromatic aberration, astigmatism, and distortion curves of the optical system or camera module of Example 1 of the present application;

[0042] Figure 3 2 is a schematic structural diagram of an optical system or camera module according to embodiment 2 of the present application;

[0043] Figure 4 axial chromatic aberration, astigmatism, and distortion curves of the optical system or camera module of Example 2 of the present application;

[0044] Figure 5 Schematic diagram of the structure of the optical system or camera module according to Example 3 of the present application;

[0045] Figure 6 axial chromatic aberration, astigmatism, and distortion curves of the optical system or camera module of Example 3 of the present application;

[0046] Figure 7 Schematic diagram of the structure of the optical system or camera module according to Example 4 of the present application;

[0047] Figure 8 These are the axial chromatic aberration, astigmatism and distortion curves of the optical system or camera module of Example 4 of the present application. DETAILED DESCRIPTION

[0048] like Figure 1-8 As shown, the present application provides a vehicle-mounted surround view optical system, which is composed of a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6 in sequence from the object plane to the image plane along the optical axis;

[0049] The first lens E1 has negative refractive power, its object-side surface is convex, and its image-side surface is concave;

[0050] The second lens E2 has negative optical power and a concave image-side surface;

[0051] The third lens E3 has positive refractive power, its object-side surface is convex, and its image-side surface is convex;

[0052] The fourth lens E4 has optical power, its object-side surface is convex, and its image-side surface is convex;

[0053] The fifth lens E5 has negative refractive power, its object-side surface is concave, and its image-side surface is concave;

[0054] The sixth lens E6 has positive refractive power, its object-side surface is convex, and its image-side surface is convex.

[0055] The vehicle-mounted surround-view optical system and camera module of the embodiment of the present invention are composed of a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6 in sequence along the optical axis from the object plane to the image plane. By rationally configuring the refractive power and surface shape of each lens, the optical lens can have an ultra-wide field of view while also having good thermal stability and low cost. This effectively reduces the volume of the optical system, while also better capturing object detail information, improving the optical lens's ability to capture details of the photographed object, and improving the image quality of the optical lens, thereby increasing the resolution and imaging clarity of the optical lens to meet people's high-definition imaging requirements for vehicle-mounted surround-view optical lenses.

[0056] The optical system satisfies the following conditions: 186 < FOV / (DT11 * IamgH / TTL) < 198; where FOV is the maximum field of view of the optical system, DT11 is the maximum effective radius of the object side of the first lens element E1, TTL is the on-axis distance from the object side of the first lens element E1 to the imaging plane, and ImgH is half the diagonal length of the effective pixel area on the imaging plane. This relationship reflects the constraints imposed on the optical lens in terms of field of view and thinness, enabling the optical system to meet wide-angle requirements while also maintaining excellent thinness and lightness, ensuring the optical system's ultra-wide-angle, miniaturized, and thin characteristics. When the relationship falls below the lower limit, while ensuring the optical lens's field of view remains ultra-wide, further increasing DT11 * IamgH / TTL would overly compress the optical lens's thinness and lightness, hindering its performance. When the relationship exceeds the upper limit, the optical lens struggles to achieve good imaging resolution.

[0057] Preferably, the optical system satisfies the following conditions: 0.3<(f4-f5) / (f4+f5)<2.6, wherein f4 is the effective focal length of the fourth lens E4, and f5 is the effective focal length of the fifth lens E5. By adjusting the optical power of the fourth lens E4 and the fifth lens E5, it is possible to avoid excessive concentration of the optical power on the fourth lens E4, and at the same time help to constrain the image side of the fourth lens E4 and the surface shape of the fifth lens E5, and avoid excessive bending that affects the processing and manufacturability of the fourth lens E4 and the fifth lens E5. In addition, satisfying the above relationship can further enhance the correction of higher-order aberrations and reduce the tolerance sensitivity of the optical lens on the basis of reducing tertiary aberrations such as spherical aberration, coma, and field curvature. When the lower limit of the above relationship is exceeded, the optical power of the fourth lens E4 is too concentrated, resulting in an excessive curvature of the image side of the fourth lens E4, which is not conducive to the processing and manufacturability of the fourth lens E4. When the upper limit of the above relationship is exceeded, the optical power of the fourth lens E4 is insufficient, which is not conducive to the correction of the aberrations of the optical lens and affects the tolerance sensitivity of the optical lens.

[0058] Preferably, the optical system satisfies the following condition: 1.3 < f5 / (f5 + f6) < 3.8, where f5 is the effective focal length of the fifth lens element E5, and f6 is the effective focal length of the sixth lens element E6. By properly allocating the focal powers of the fifth and sixth optical elements near the image plane within a reasonable ratio, the spherical aberration remaining after balancing can balance the spherical aberration generated by the first four elements, thereby fine-tuning and controlling the system's spherical aberration and enhancing precise control of on-axis field aberrations.

[0059] Preferably, the optical system satisfies the following condition: 1.7 < f345 / f < 3.0, where f345 is the effective combined focal length of the third lens E3, the fourth lens E4, and the fifth lens E5, and f is the effective focal length of the optical imaging system. By constraining the ratio of the combined focal length of the third lens E3, the fourth lens E4, and the fifth lens E5 to the effective focal length of the optical lens, the focal powers of the third lens E3, the fourth lens E4, and the fifth lens E5 can be properly distributed, allowing the fourth lens E4 to achieve diverse compatibility. This balances the internal aberrations of the optical lens while maintaining a compact design. This further helps adjust the field curvature and astigmatism at the imaging edge of the optical lens, ensuring the optimal imaging quality of the surrounding environment.

[0060] Preferably, the optical system satisfies the following condition: 0.5 < f34 / f56 < 1.2, where f34 is the combined focal length of the third and fourth lenses E3 and E4, and f56 is the combined focal length of the fifth and sixth lenses E5 and E6. By constraining the ratio of the combined focal length of the third and fourth lenses E3 and E4 to the combined focal length of the fifth and sixth lenses E5 and E6, the focal power of the third to sixth lenses E3 and E6 can be rationally distributed. Furthermore, by combining the surface design of the third to sixth lenses E3 and E6, different surface pairing schemes are formed for the third and fourth lenses E3 and E4, and the fifth and sixth lenses E5 and E6. This effectively constrains the aberration variation from the center to the edge of the optical lens's field of view. At the same time, excessive curvature of the effective diameter region of the third to sixth lenses E3 and E6 is avoided, thereby suppressing the degradation of the optical lens's imaging performance and the sensitivity to decentering and tilting generated during the manufacturing of each lens within a favorable range.

[0061] Preferably, the optical system satisfies the following condition: 3.0 < f56 / f < 5.0, where f56 is the effective combined focal length of the fifth lens element E5 and the sixth lens element E6, and f is the effective focal length of the optical imaging system. The fifth lens element E5 provides positive refractive power to the optical system, and the sixth lens element E6 provides refractive power to the optical system. The use of two lenses with refractive power cemented together facilitates mutual correction of aberrations. If the upper limit of the relationship is exceeded, the refractive power of the cemented lens combination is too low, which can easily lead to significant marginal aberrations and chromatic aberrations, hindering improved resolution. If the lower limit is exceeded, the combined refractive power of the fifth lens element E5 and the sixth lens element E6 is too strong, causing the lens combination to produce severe astigmatism, hindering improved imaging quality.

[0062] Preferably, the optical system satisfies the following condition: 0.4 < |(R1+R2) / (R2+R3)| < 2.3, where R1 is the radius of curvature of the object-side surface of the first lens E1, R2 is the radius of curvature of the image-side surface of the first lens E1, and R3 is the radius of curvature of the object-side surface of the second lens E2. By controlling the radii of curvature of the object-side surface of the first lens E1, the radii of curvature of the image-side surface of the first lens E1, and the radii of curvature of the object-side surface of the second lens E2 within reasonable ranges, the optical system can achieve a small light deflection angle and facilitate processing.

[0063] Preferably, the optical system satisfies the following condition: -1 < (R11 + R12) / (R11 - R12) < 0, where R11 is the radius of curvature of the object-side surface of the sixth lens element E6, and R12 is the radius of curvature of the image-side surface of the sixth lens element E6. By controlling the radii of curvature of the object-side and image-side surfaces of the sixth lens element E6, the incident angle of the principal ray at the image plane for each field of view of the optical imaging lens can be relatively reasonably controlled, thereby meeting the principal ray incident angle requirements of the optical system design.

[0064] Preferably, the optical system satisfies the following condition: 0 < |f2 / R3| < 1.3, where R3 is the radius of curvature of the object-side surface of the second lens E2, and f2 is the effective focal length of the second lens E2. Controlling the ratio of the radius of curvature of the object-side surface of the second lens E2 to the effective focal length of the second lens E2 facilitates reasonable control of the curvature of the second lens E2, resulting in better processing and molding properties. This also prevents excessive light deflection during transmission between the lenses, reducing the difficulty of manufacturing the optical lens assembly.

[0065] Preferably, the optical system satisfies the following condition: 0.5 < (SAG1 - SAG3) / (SAG1 + SAG3) < 1.4, where SAG1 is the distance from the maximum effective clear aperture on the object-side surface of the first lens E1 to the intersection of the object-side surface of the first lens E1 and the optical axis in a direction parallel to the optical axis (i.e., the sag height of the object-side surface of the first lens E1), and SAG3 is the distance from the maximum effective clear aperture on the object-side surface of the second lens E2 to the intersection of the object-side surface of the second lens E2 and the optical axis in a direction parallel to the optical axis (i.e., the sag height of the object-side surface of the second lens E2). By controlling the sag height ratio of the object-side surface of the first lens E1 and the object-side surface of the second lens E2, the proportional relationship of the sag heights of the first lens E1 and the second lens E2 in the optical lens can be well maintained, while the sag heights of the first lens E1 and the second lens E2 are controlled to be not excessively large, thereby ensuring a reasonable degree of surface curvature of the first lens E1 and the second lens E2 and avoiding difficulties in processing and coating.

[0066] Preferably, the optical system satisfies the following condition: 2.0 < CT6 / SAG11 + SAG12 < 4.5, where CT6 is the central thickness of the sixth lens element E6 on the optical axis, SAG11 is the distance from the maximum effective clear aperture on the object side of the sixth lens element E6 to the intersection of the object side of the sixth lens element E6 and the optical axis in a direction parallel to the optical axis (i.e., the object side sag height of the sixth lens element E6), and SAG12 is the distance from the maximum effective clear aperture on the image side of the sixth lens element E6 to the intersection of the image side of the sixth lens element E6 and the optical axis in a direction parallel to the optical axis (i.e., the image side sag height of the sixth lens element E6). When the above condition is met, the ratio of the central thickness of the sixth lens element E6 to the object side and image side sag heights can be reasonably configured, which is conducive to optimizing the shape of the sixth lens element E6, enabling the sixth lens element E6 to effectively correct aberrations in the peripheral field of view of the system, thereby improving the imaging quality of the system, while also facilitating reducing the manufacturing difficulty of the sixth lens element E6. Furthermore, it is conducive to shortening the overall length of the system and achieving a compact design. If the value falls below the lower limit of the above conditional expression, the image-side surface of the sixth lens element E6 is excessively curved, making it more difficult to manufacture and thus increasing the production cost of the sixth lens element E6. Furthermore, such excessive curvature of the image-side surface of the sixth lens element E6 is prone to severe marginal aberrations, which is detrimental to improving the image quality of the system. If the value exceeds the upper limit of the above conditional expression, the center thickness of the sixth lens element E6 is too large, which is detrimental to shortening the overall length of the system.

[0067] Preferably, the optical system satisfies the following condition: 0.3 < DT11 / SAG2 < 2.6, where DT11 is the maximum effective radius of the object side surface of the first lens E1, and SAG2 is the distance from the maximum effective aperture of the image side surface of the first lens E1 to the intersection of the image side surface of the first lens E1 and the optical axis in a direction parallel to the optical axis (i.e., the sag height of the image side surface of the first lens E1). Satisfying the above relationship in the optical system helps prevent excessive curvature of the image side surface of the first lens E1, thereby reducing the difficulty in manufacturing the first lens E1. If the relationship is below the lower limit, the maximum effective aperture of the image side surface of the first lens E1 is too small, which is not conducive to large-angle light entering the optical system and reduces the imaging range of the optical system. If the relationship is exceeded, the image side surface of the first lens E1 is too flat, and the risk of ghosting in the optical system is high.

[0068] Preferably, the second lens E2, the fourth lens E4, the fifth lens E5, and the sixth lens E6 are aspherical lenses, and the first lens E1 and the third lens E3 are spherical lenses; the aperture STO is located between the third lens E3 and the fourth lens E4. Compared with the existing surround-view cameras that use all-glass lenses, which result in larger lenses and higher costs, which are not conducive to market promotion and application, the present application selects two glass lenses and four aspherical plastic lenses, and rationally configures the refractive power and surface shape of each lens, so that the optical lens can have an ultra-wide field of view angle range while having good thermal stability and low cost. At the same time, it can also better capture object detail information, improve the optical lens's ability to capture details of the photographed object, improve the image quality of the optical lens, and improve the resolution and imaging clarity of the optical lens to meet people's requirements for high-definition imaging of vehicle-mounted surround-view optical lenses.

[0069] Preferably, the F number of the optical system is 2.0, the full field of view FOV satisfies: FOV>200°, and the lens TTL satisfies: TTL≤15.8mm. This design can reduce the total optical length and effectively miniaturize the lens. The vehicle-mounted surround-view optical lens configured in the present invention has the advantages of ultra-wide angle, miniaturization, and ultra-thinness, has a compact structure, is easy to process and install, and has good imaging resolution.

[0070] Specifically, as a preferred embodiment of the present invention but not limiting, Figure 1-2 As shown in Example 1, an optical imaging lens according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, an STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, an infrared filter E7, and an imaging surface S14.

[0071] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S10 being convex and its image-side surface S11 being convex. The filter E7 has an object-side surface S12 and an image-side surface S13. Light from the object passes through each surface S1 to S13 in sequence and is ultimately imaged on the imaging surface S14.

[0072] Table 1 shows the surface type, curvature radius, thickness, and material of each lens of the optical imaging lens of Example 1, wherein the units of curvature radius and thickness are both millimeters (mm).

[0073] Table 1: Basic parameters of the optical system of Example 1

[0074] Face number Surface type Curvature radius (mm) Thickness (mm) Material OBJ spherical surface endless endless S1 spherical surface 11.6900 1.2000 1.83,42.73 S2 spherical surface 2.8079 2.3250 S3 Q-type aspheric surface -33.8738 0.7307 1.54,55.77 S4 Q-type aspheric surface 1.6963 0.9461 S5 spherical surface 3.5870 2.8955 1.85,23.79 S6 spherical surface -14.2002 0.4500 STO spherical surface 1.06E+18 -0.1309 S7 Q-type aspheric surface 3.7191 1.2532 1.54,55.98 S8 Q-type aspheric surface -2.3948 0.4500 1.66,20.38 S9 Q-type aspheric surface 8.5193 0.6434 S10 Q-type aspheric surface 3.2505 1.8471 1.54,55.98 S11 Q-type aspheric surface -4.8158 1.2651 S12 spherical surface endless 0.7000 1.52,64.21 S13 spherical surface endless 1.2248 S14 spherical surface endless

[0075] In Table 1, any one of the object side and image side of the second lens E2, the fourth lens E4, the fifth lens E5, and the sixth lens E6 is a Q-type aspherical surface. The surface shape of each aspherical lens can be defined by, but not limited to, the following aspherical surface formula:

[0076]

[0077] Where Z is the distance from the corresponding point on the aspheric surface to the plane tangent to the vertex of the surface, r is the radial coordinate of the aspheric surface, c is the curvature of the vertex of the aspheric surface, K is the cone coefficient, Am is the aspheric coefficient, rmax is the maximum radial radius coordinate, and u = r / rmax.

[0078] Table 2 gives the conic coefficients and higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 of each aspheric surface that can be used in the first embodiment.

[0079] Table 2: Aspheric surface related values of the lens surface of Example 1

[0080] Surface number S3 S4 S7 S8 S9 S10 S11 K -8.60E+00 -5.66E-01 7.80E+00 -7.58E+00 -7.25E+01 -1.06E+01 -2.87E+00 A4 -1.76E-01 -1.47E-01 -4.10E-02 -2.03E-01 1.74E-02 1.32E-02 -4.46E-02 A6 2.90E-02 -7.32E-03 -5.48E-03 2.05E-02 1.16E-02 -2.05E-03 -3.23E-03 A8 4.74E-03 -2.07E-03 -1.45E-03 -7.38E-03 -2.49E-03 3.61E-03 1.04E-03 A10 2.81E-03 6.77E-04 -2.00E-04 8.82E-04 4.57E-04 -4.03E-05 3.01E-05 A12 -9.82E-04 -5.36E-04 -1.51E-04 -6.24E-04 -2.02E-04 -3.01E-06 1.79E-04 A14 -1.39E-03 2.66E-04 1.24E-05 2.45E-05 1.90E-05 -3.90E-05 -4.17E-05 A16 -1.66E-03 -2.35E-04 -2.93E-05 -1.14E-04 3.78E-06 1.30E-05 3.02E-05 A18 -7.13E-04 1.23E-04 1.91E-05 -2.38E-06 3.81E-06 2.15E-05 -1.85E-05 A20 -3.50E-04 -9.66E-05 -1.02E-05 -4.29E-05 5.50E-06 -5.64E-06 5.32E-06 A22 7.16E-05 5.97E-05 6.33E-06 1.33E-05 2.40E-07 4.75E-06 -7.24E-07 A24 5.69E-05 -2.90E-05 -7.84E-06 2.55E-05 2.23E-06 9.67E-07 -3.88E-08 A26 9.04E-05 3.51E-05 3.43E-06 4.02E-06 -4.36E-06 2.54E-06 -3.59E-09 A28 3.25E-05 -1.62E-06 -4.35E-07 -6.78E-06 4.34E-08 -2.34E-06 4.84E-09 A30 1.58E-05 1.99E-05 -2.31E-08 -1.25E-06 3.53E-07 3.77E-07 3.07E-09

[0081] Figure 1 FIG2 shows a schematic structural diagram of an optical imaging lens according to Example 1 of the present application. Figure 2 The axial chromatic aberration, astigmatism, and distortion curves of the optical imaging lens of Example 1 are shown. Axial chromatic aberration indicates the deviation of light of different wavelengths from the focal point after passing through the lens; astigmatism indicates the meridional image curvature and sagittal image curvature; distortion indicates the corresponding distortion value at different image heights, which is represented by Figure 2 It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0082] Specifically, as a preferred embodiment of the present invention but not limiting, Figure 3-4 As shown in Example 2, the lens system includes, in order from the object side to the image side along the optical axis: a first lens E1, a second lens E2, a third lens E3, STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, an infrared filter E7, and an imaging surface S14.

[0083] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S10 being convex and its image-side surface S11 being convex. The filter E7 has an object-side surface S12 and an image-side surface S13. Light from the object passes through each surface S1 to S13 in sequence and is ultimately imaged on the imaging surface S14.

[0084] Table 3 shows the surface type, curvature radius, thickness, and material of each lens of the optical imaging lens system of Example 2, where the units of curvature radius and thickness are both millimeters (mm).

[0085] Table 3: Basic parameters of the optical system of Example 2

[0086] Face number Surface type Curvature radius (mm) Thickness (mm) Material OBJ spherical surface endless endless S1 spherical surface 10.7069 1.2012 1.90,31.32 S2 spherical surface 2.7179 2.1961 S3 Q-type aspheric surface 7.7789 0.6000 1.54,55.77 S4 Q-type aspheric surface 1.6538 0.9417 S5 spherical surface 7.1123 2.5892 1.92,20.88 S6 spherical surface -5.5039 0.1937 STO spherical surface 1.00E+18 0.1635 S7 Q-type aspheric surface 12.6465 2.1534 1.54,55.98 S8 Q-type aspheric surface -1.4308 0.4000 1.66,20.38 S9 Q-type aspheric surface -19.3312 0.6140 S10 Q-type aspheric surface 2.4191 1.5572 1.54,55.98 S11 Q-type aspheric surface -40.0623 0.2450 S12 spherical surface endless 0.9500 1.52,64.21 S13 spherical surface endless 1.9950 S14 spherical surface endless

[0087] In Table 3, any one of the object side and image side of the second lens E2, the fourth lens E4, the fifth lens E5, and the sixth lens E6 is a Q-type aspherical surface. The surface shape of each aspherical lens can be defined by, but not limited to, the following aspherical surface formula:

[0088]

[0089] Where Z is the distance from the corresponding point on the aspheric surface to the plane tangent to the vertex of the surface, r is the radial coordinate of the aspheric surface, c is the curvature of the vertex of the aspheric surface, K is the conic coefficient, Am is the aspheric coefficient, rmax is the maximum radial radius coordinate, and u = r / rmax. Table 4 shows the conic coefficients and higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 of various aspheric surfaces that can be used in the first embodiment.

[0090] Table 4: Aspheric surface related values of the lens surface of Example 2

[0091] Surface number S3 S4 S7 S8 S9 S10 S11 K -6.61E+01 -8.52E-01 1.58E+01 3.41E-02 9.00E+01 -6.08E+00 8.14E+01 A4 -1.04E+00 1.53E-01 2.79E-02 -3.18E-01 -2.80E-01 -1.99E-02 4.91E-02 A6 1.57E-02 7.54E-02 2.87E-03 3.21E-02 4.39E-02 -5.73E-02 -4.10E-02 A8 -2.88E-02 2.50E-02 -3.22E-05 1.59E-02 -3.92E-03 -1.39E-03 -2.34E-04 A10 7.83E-02 2.34E-02 -1.12E-04 2.90E-02 4.08E-03 5.18E-05 4.91E-05 A12 1.02E-01 9.79E-03 -1.69E-04 1.65E-02 -1.39E-04 9.80E-04 4.49E-04 A14 6.44E-02 2.75E-03 -5.88E-05 8.27E-03 3.94E-04 1.23E-04 -2.38E-04 A16 2.11E-02 -1.97E-06 -4.35E-05 1.77E-03 -1.49E-04 1.73E-04 9.01E-05 A18 1.69E-03 -6.29E-05 7.19E-06 -6.76E-04 -1.16E-04 -5.56E-05 -5.88E-05 A20 -2.44E-04 -5.29E-05 3.25E-06 -4.61E-04 -2.79E-05 4.27E-05 4.20E-05 A22 6.25E-04 1.26E-04 7.27E-06 5.63E-05 -8.84E-06 2.29E-05 -2.02E-05 A24 2.05E-04 1.06E-04 -8.25E-06 2.82E-04 3.60E-05 8.37E-05 1.92E-05 A26 -5.52E-04 9.37E-05 -3.26E-06 2.11E-04 1.80E-05 7.09E-05 -8.84E-06 A28 -5.32E-04 5.76E-05 -3.97E-06 2.74E-05 1.77E-05 5.70E-05 1.13E-06 A30 -8.48E-05 2.68E-05 4.06E-06 2.52E-06 1.06E-05 2.30E-05 -4.82E-08

[0092] Figure 3 FIG2 shows a schematic structural diagram of an optical imaging lens according to Example 2 of the present application. Figure 4The axial chromatic aberration, astigmatism, and distortion curves of the optical imaging lens of Example 2 are shown. Axial chromatic aberration indicates the deviation of light of different wavelengths from the focal point after passing through the lens; astigmatism indicates the meridional image curvature and sagittal image curvature; distortion indicates the corresponding distortion value at different image heights, which is represented by Figure 4 It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0093] Specifically, as a preferred embodiment of the present invention but not limiting, Figure 5-6 As shown in Example 3, the lens includes, in order from the object side to the image side along the optical axis: a first lens E1, a second lens E2, a third lens E3, STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, an infrared filter E7 and an imaging surface S14.

[0094] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S10 being convex and its image-side surface S11 being convex. The filter E7 has an object-side surface S12 and an image-side surface S13. Light from the object passes through each surface S1 to S13 in sequence and is ultimately imaged on the imaging surface S14.

[0095] Table 5 shows the surface type, curvature radius, thickness, and material of each lens of the optical imaging lens system of Example 3, where the units of curvature radius and thickness are both millimeters (mm).

[0096] Table 5: Basic parameters of the optical system of Example 3

[0097] Face number Surface type Curvature radius (mm) Thickness (mm) Material OBJ spherical surface endless endless S1 spherical surface 11.6900 1.2000 1.88,39.23 S2 spherical surface 2.7968 2.3397 S3 Q-type aspheric surface -18.2422 0.7899 1.54,55.77 S4 Q-type aspheric surface 1.9149 0.9046 S5 spherical surface 3.7095 3.0119 1.76,26.61 S6 spherical surface -6.8791 0.4071 STO spherical surface 1.00E+18 -0.0292 S7 Q-type aspheric surface 3.5901 1.4485 1.54,55.98 S8 Q-type aspheric surface -3.5717 0.4116 1.66,20.38 S9 Q-type aspheric surface 4.3323 0.5519 S10 Q-type aspheric surface 3.2054 1.5740 1.54,55.98 S11 Q-type aspheric surface -4.6927 0.1000 S12 spherical surface endless 0.7000 1.52,64.21 S13 spherical surface endless 2.3899 S14 spherical surface endless

[0098] In Table 5, any one of the object side and image side of the second lens E2, the fourth lens E4, the fifth lens E5, and the sixth lens E6 is a Q-type aspherical surface. The surface shape of each aspherical lens can be defined by, but not limited to, the following aspherical surface formula:

[0099]

[0100] Where Z is the distance from the corresponding point on the aspheric surface to the plane tangent to the vertex of the surface, r is the radial coordinate of the aspheric surface, c is the curvature of the vertex of the aspheric surface, K is the conic coefficient, Am is the aspheric coefficient, rmax is the maximum radial radius coordinate, and u = r / rmax. Table 6 shows the conic coefficients and higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 of various aspheric surfaces that can be used in the first embodiment.

[0101] Table 6: Aspheric surface related values of the lens surface of Example 3

[0102] Surface number S3 S4 S7 S8 S9 S10 S11 K -8.13E+00 -4.44E-01 3.45E+00 5.74E+00 1.86E+00 -6.57E+00 1.36E-01 A4 -4.73E-02 -5.09E-02 -2.02E-02 -1.46E-01 -1.13E-01 -1.06E-01 -5.78E-02 A6 -1.32E-02 -1.17E-02 -1.97E-03 7.42E-02 3.04E-02 5.16E-03 -2.14E-02 A8 4.62E-03 -9.84E-04 -1.82E-04 -8.15E-03 -7.06E-03 -1.75E-03 1.37E-03 A10 -8.81E-04 4.47E-04 6.63E-06 8.18E-03 2.05E-03 7.52E-04 -3.14E-04 A12 4.75E-04 -3.51E-04 -1.11E-06 -2.39E-04 -7.76E-04 -9.27E-05 7.30E-04 A14 1.50E-04 2.53E-04 -1.06E-06 1.89E-03 2.83E-04 4.40E-05 -2.21E-04 A16 2.26E-04 -1.40E-04 2.66E-06 2.96E-05 -1.46E-04 -2.27E-05 1.82E-04 A18 2.08E-04 1.08E-04 -2.63E-06 6.21E-04 6.35E-05 1.77E-06 -1.00E-04 A20 1.89E-04 -7.49E-05 -9.11E-07 -1.49E-05 -3.90E-05 2.10E-06 8.84E-05 A22 1.47E-04 2.76E-05 -5.27E-06 2.04E-04 4.54E-05 4.10E-07 -3.64E-05 A24 9.32E-05 -2.37E-05 -1.93E-06 -4.16E-05 1.50E-05 3.87E-09 2.87E-05 A26 1.26E-05 2.42E-05 -1.16E-06 1.72E-05 4.15E-05 -6.71E-09 -1.62E-05 A28 -1.34E-05 -1.33E-05 5.49E-06 -4.80E-05 2.25E-05 -9.22E-09 1.77E-05 A30 -7.04E-06 3.14E-06 -1.42E-06 7.46E-05 2.05E-05 -3.87E-09 -6.15E-06

[0103] Figure 5 FIG2 shows a schematic structural diagram of an optical imaging lens according to Example 3 of the present application. Figure 6 The axial chromatic aberration, astigmatism, and distortion curves of the optical imaging lens of Example 3 are shown. Axial chromatic aberration indicates the deviation of light of different wavelengths from the focal point after passing through the lens; astigmatism indicates the meridional image curvature and sagittal image curvature; and distortion indicates the corresponding distortion value at different image heights. Figure 6 It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0104] Specifically, as a preferred embodiment of the present invention but not limiting, Figure 7-8 As shown in Example 4, the lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, an infrared filter E7, and an imaging surface S14.

[0105] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S10 being convex and its image-side surface S11 being convex. The filter E7 has an object-side surface S12 and an image-side surface S13. Light from an object passes through each surface S1 to S13 in sequence and is ultimately imaged on an imaging surface S14.

[0106] Table 7 shows the surface type, curvature radius, thickness, and material of each lens of the optical imaging lens system of Example 4, where the units of curvature radius and thickness are both millimeters (mm).

[0107] Table 7: Basic parameters of the optical system of Example 4

[0108] Face number Surface type Curvature radius (mm) Thickness (mm) Material OBJ spherical surface endless endless S1 spherical surface 11.6900 1.2000 1.86,46.57 S2 spherical surface 2.8638 1.8503 S3 Q-type aspheric surface 3.7223 0.5000 1.54,55.77 S4 Q-type aspheric surface 1.4330 1.3853 S5 spherical surface 21.2586 2.5273 1.92,20.88 S6 spherical surface -5.5505 0.5606 STO spherical surface 1.00E+18 -0.0590 S7 Q-type aspheric surface 5.5412 1.8573 1.54,55.98 S8 Q-type aspheric surface -1.6513 0.5689 1.66,20.38 S9 Q-type aspheric surface 5.6846 0.3382 S10 Q-type aspheric surface 2.0350 1.7171 1.54,55.98 S11 Q-type aspheric surface -7.6494 0.2475 S12 spherical surface endless 0.9000 1.52,64.21 S13 spherical surface endless 2.2065 S14 spherical surface endless

[0109] In Table 7, any one of the object side and image side of the second lens E2, the fourth lens E4, the fifth lens E5, and the sixth lens E6 is a Q-type aspherical surface. The surface shape of each aspherical lens can be defined by, but not limited to, the following aspherical surface formula:

[0110]

[0111] Where Z is the distance from the corresponding point on the aspheric surface to the plane tangent to the vertex of the surface, r is the radial coordinate of the aspheric surface, c is the curvature of the vertex of the aspheric surface, K is the conic coefficient, Am is the aspheric coefficient, rmax is the maximum radial radius coordinate, and u = r / rmax. Table 8 shows the conic coefficients and higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 of various aspheric surfaces that can be used in the first embodiment.

[0112] Table 8: Aspheric surface related values of the lens surface of Example 4

[0113] Surface number S3 S4 S7 S8 S9 S10 S11 K -1.17E+00 -9.36E-01 1.17E+00 -4.03E-02 -4.72E+01 -6.16E+00 8.07E+00 A4 -1.30E+00 1.61E-01 1.84E-02 -3.02E-01 -1.89E-01 9.58E-03 5.16E-01 A6 2.27E-01 -4.49E-02 1.50E-03 3.85E-02 5.30E-02 -1.23E-01 -2.09E-03 A8 1.19E-01 1.36E-02 -2.78E-05 2.39E-02 -1.23E-02 -5.40E-02 1.70E-02 A10 -8.31E-04 -1.38E-03 8.55E-05 1.93E-02 1.12E-03 -2.49E-02 1.12E-02 A12 2.26E-02 -2.53E-03 -4.24E-05 -1.29E-02 -6.12E-03 -1.34E-02 4.04E-03 A14 1.14E-02 -5.86E-04 2.59E-05 -1.85E-02 -1.71E-03 -2.20E-03 -1.49E-05 A16 5.06E-03 2.21E-03 -2.32E-05 -1.19E-02 -9.73E-04 1.17E-03 -1.05E-03 A18 -1.72E-04 3.35E-03 9.24E-06 9.51E-04 6.73E-04 1.78E-03 -1.19E-03 A20 1.93E-04 3.32E-03 -1.20E-05 9.10E-03 7.43E-04 -1.24E-04 -7.89E-04 A22 8.92E-04 2.61E-03 6.58E-06 1.07E-02 5.99E-04 -1.33E-03 -4.66E-04 A24 1.07E-03 1.64E-03 -3.20E-06 7.79E-03 2.43E-04 -1.60E-03 -2.02E-04 A26 2.09E-04 7.96E-04 6.61E-06 4.01E-03 5.48E-05 -1.05E-03 -1.01E-04 A28 -3.03E-04 2.96E-04 -5.20E-06 1.36E-03 -1.53E-05 -4.43E-04 -3.62E-05 A30 -2.34E-04 8.37E-05 1.26E-06 2.46E-04 -1.08E-05 -9.75E-05 -1.76E-05

[0114] Figure 7 FIG2 shows a schematic structural diagram of an optical imaging lens according to Example 4 of the present application. Figure 8 The axial chromatic aberration, astigmatism, and distortion curves of the optical imaging lens of Example 4 are shown. Axial chromatic aberration indicates the deviation of light of different wavelengths from the focal point after passing through the lens; astigmatism indicates the meridional image curvature and sagittal image curvature; and distortion indicates the magnitude of distortion at different image heights. Figure 8 It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0115] Furthermore, in Examples 1-4, the basic data are shown in Table 9:

[0116] Table 9: Basic data of Examples 1-4

[0117] Basic data / Example 1 2 3 4 f1(mm) -4.69 -4.32 -4.42 -4.67 f2(mm) -2.99 -4.05 -3.18 -4.70 f3(mm) 3.62 3.70 3.58 4.95 f4(mm) 17.22 -38.57 14.14 41.93 f5(mm) -7.46 -17.91 -5.19 -5.52 f6(mm) 3.92 4.31 3.81 3.19 f(mm) 1.68 1.73 1.68 1.67 TTL(mm) 15.80 15.80 15.80 15.80 FOV(°) 200.00 200.00 200.00 200.00 f / EPD 2.00 2.00 2.00 2.00

[0118] Furthermore, in Examples 1-4, each conditional formula satisfies the conditions in Table 10 below:

[0119] Table 10: Conditional formulas for Examples 1-4

[0120] Conditional formula / Example 1 2 3 4 DT11 5.64 5.67 5.55 5.90 IamgH 2.88 2.88 2.88 2.88 f345 3.05 3.55 2.98 4.90 f34 4.90 6.10 4.73 6.56 f56 6.06 5.26 8.15 5.80 R1 11.69 10.71 11.69 11.69 R2 2.81 2.72 2.80 2.86 R3 -33.87 7.78 -18.24 3.72 R11 3.25 2.42 3.21 2.03 R12 -4.82 -40.06 -4.69 -7.65 SAG1 1.45 1.63 1.40 1.60 SAG2 1.98 2.10 1.97 2.17 SAG3 -0.20 0.05 -0.22 0.47 SAG11 0.46 0.56 0.31 0.73 SAG12 -0.59 -0.08 -0.65 -0.18 CT6 1.85 1.56 1.57 1.72 FOV / (DT11*IamgH / TTL) 194.47 193.70 197.75 186.16 (f4-f5) / (f4+f5) 2.53 0.37 2.16 1.30 f5 / (f5+f6) 2.10 1.32 3.76 2.37 f345 / f 1.81 2.06 1.77 2.93 f34 / f56 0.81 1.16 0.58 1.13 f56 / f 3.60 3.05 4.84 3.47 |(R1+R2) / (R2+R3)| 0.47 1.28 0.94 2.21 (R11+R12) / (R11-R12) -0.19 -0.89 -0.19 -0.58 |f2 / R3| 0.09 0.52 0.17 1.26 (SAG1-SAG3) / (SAG1+SAG3) 1.32 0.94 1.38 0.55 CT6 / SAG11+SAG12 3.46 2.70 4.48 2.17 DT11 / SAG2 2.86 3.49 3.96 3.69

[0121] A camera module includes at least an optical lens, in which the above-mentioned vehicle-mounted surround-view optical system is installed. The optical system is composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens in sequence along the optical axis from the object plane to the image plane. By rationally configuring the refractive power and surface shape of each lens, the optical lens can have an ultra-wide field of view angle range while having good thermal stability and low cost, effectively reducing the volume of the optical system. At the same time, it can also better capture object detail information, improve the optical lens's ability to capture details of the photographed object, improve the image quality of the optical lens, and improve the resolution and imaging clarity of the optical lens, so as to meet people's high-definition imaging requirements for vehicle-mounted surround-view optical lenses.

[0122] The above descriptions are provided in conjunction with specific content to provide one or more embodiments, and the specific implementation of the present invention is not limited to these descriptions. Any similarity or similarity with the methods, structures, etc. of the present invention, or any technical deduction or substitution based on the concept of the present invention, shall be considered within the scope of protection of the present invention.

Claims

1. A vehicle-mounted surround view optical system, characterized in that: Along the optical axis, from the object plane to the image plane, it is composed of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens; The first lens has negative optical power, its object side surface is convex, and its image side surface is concave; The second lens has negative optical power and a concave image side surface; The third lens has positive refractive power, its object-side surface is convex, and its image-side surface is convex; The fourth lens has positive refractive power, its object-side surface is convex, and its image-side surface is convex; The fifth lens has negative optical power, its object-side surface is concave, and its image-side surface is concave; The sixth lens has positive refractive power, its object-side surface is convex, and its image-side surface is convex; The second lens, the fourth lens, the fifth lens and the sixth lens are aspherical lenses, and the first lens and the third lens are spherical lenses; The optical system meets the following conditions: 186° / mm<FOV / (DT11*ImgH / TTL)<198° / mm; Wherein, FOV is the maximum field of view of the optical system, DT11 is the maximum effective radius of the object side of the first lens, TTL is the axial distance from the object side of the first lens to the imaging surface, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface.

2. The vehicle-mounted surround view optical system according to claim 1, characterized in that: The optical system satisfies the following conditions: 0.3<(f4-f5) / (f4+f5)<2.6; 1.3<f5 / (f5+f6)<3.8; Among them, f4 is the effective focal length of the fourth lens, f5 is the effective focal length of the fifth lens, and f6 is the effective focal length of the sixth lens.

3. The vehicle-mounted surround view optical system according to claim 1, characterized in that: The optical system satisfies the following conditions: 1.7<f345 / f<3.0; 0.5<f34 / f56<1.2; 3.0<f56 / f<5.0; Among them, f345 is the effective combined focal length of the third lens, the fourth lens and the fifth lens, f is the effective focal length of the optical imaging system, f34 is the combined focal length of the third lens and the fourth lens, and f56 is the combined focal length of the fifth lens and the sixth lens.

4. The vehicle-mounted surround view optical system according to any one of claims 1 to 3, characterized in that: The optical system satisfies the following conditions: 0.4<|(R1+R2) / (R2+R3)|<2.3; -1<(R11+R12) / (R11-R12)<0; 0<|f2 / R3|<1.3; Among them, R1 is the curvature radius of the object side of the first lens, R2 is the curvature radius of the image side of the first lens, R3 is the curvature radius of the object side of the second lens, R11 is the curvature radius of the object side of the sixth lens, R12 is the curvature radius of the image side of the sixth lens, and f2 is the effective focal length of the second lens.

5. The vehicle-mounted surround view optical system according to any one of claims 1 to 3, characterized in that: The optical system satisfies the following conditions: 0.5<(SAG1-SAG3) / (SAG1+SAG3)<1.4; Among them, SAG1 is the distance from the maximum effective aperture of the objective side of the first lens to the intersection of the objective side of the first lens and the optical axis in the direction parallel to the optical axis, and SAG3 is the distance from the maximum effective aperture of the objective side of the second lens to the intersection of the objective side of the second lens and the optical axis in the direction parallel to the optical axis.

6. The vehicle-mounted surround view optical system according to any one of claims 1 to 3, characterized in that: The optical system meets the following conditions: 0.3<DT11 / SAG2<2.6; Among them, SAG2 is the distance from the maximum effective aperture of the image side surface of the first lens to the intersection of the image side surface of the first lens and the optical axis in the direction parallel to the optical axis, and DT11 is the maximum effective radius of the object side surface of the first lens.

7. The vehicle-mounted surround view optical system according to any one of claims 1 to 3, characterized in that: The aperture is located between the third lens and the fourth lens.

8. The vehicle-mounted surround view optical system according to any one of claims 1 to 3, characterized in that: The F number of the optical system is 2.0; The full field of view (FOV) of the optical system satisfies: FOV>200°; The TTL of the lens of the optical system satisfies: TTL≤15.8mm.

9. A camera module, comprising at least an optical lens, characterized in that: The optical lens is equipped with the vehicle-mounted surround view optical system according to any one of claims 1 to 8.

Images