A large-aperture vehicle-mounted optical system and a camera module using the same

Abstract

The application provides a large-aperture vehicle-mounted optical system and an applied camera module, which are mainly composed of six lenses. The first lens has a convex object plane and a concave image plane, and has a negative focal power; the second lens has a convex or concave object plane and a concave image plane, and has a negative focal power; the third lens has a focal power; the fourth lens has a focal power; the fifth lens has a convex or concave object plane and a concave image plane, and has a negative focal power; the sixth lens has a convex object plane and a convex image plane, and has a positive focal power; the fifth lens and the sixth lens are bonded to form a combined lens. The number of lenses in the application is reasonable, the structure is simple, the focal power of the lenses is reasonably distributed, the lens aberration is optimized, the imaging quality of the optical system is improved, the characteristics of super wide angle, large aperture and excellent temperature characteristics are considered, and the application has great potential in the market.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical imaging, in particular to a large-aperture vehicle-mounted optical system and a camera module applied thereto. BACKGROUND

[0002] In recent years, the automobile auxiliary driving system has developed rapidly, and the vehicle-mounted optical lens, as the eyes of the automobile to obtain external information, plays an irreplaceable role. In order to meet the higher imaging quality requirements and larger visual range, the lenses need to be reasonably matched and a large aperture needs to be used. However, most of the lenses on the market have the disadvantages of small aperture, low resolution, and low pixels. SUMMARY

[0003] In order to overcome the disadvantages of small aperture, low resolution, and low pixels of the existing vehicle-mounted optical lenses, the present application provides a large-aperture, high-resolution, temperature characteristic excellent, and super-high-pixel optical system and a camera module applied thereto, which has the characteristics of large aperture, high resolution, excellent temperature characteristic, and super-high pixel, and has great potential in the vehicle-mounted field.

[0004] A large-aperture vehicle-mounted 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 from an object plane to an image plane along an optical axis:

[0005] The object plane side of the first lens is convex, and the image plane side is concave, and the optical power thereof is negative;

[0006] The object plane side of the second lens is convex or concave, and the image plane side is concave, and the optical power thereof is negative;

[0007] The third lens has optical power;

[0008] The fourth lens has optical power;

[0009] The object plane side of the fifth lens is convex or concave, and the image plane side is concave, and the optical power thereof is negative;

[0010] The object plane side and the image plane side of the sixth lens are both convex, and the optical power thereof is positive.

[0011] Preferably, each lens of the optical system satisfies the following conditions:

[0012] -4.5 mm < f1 < -3.5 mm;

[0013] -3.2 mm < f2 < -2.3 mm;

[0014] -13.7 mm < f3 < 5.5 mm;

[0015] 3.5 mm < f4 < 5.1 mm;

[0016] -1.62 mm < f5 < -0.97 mm;

[0017] 0.96 mm < f6 < 1.65 mm;

[0018] wherein, f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, f4 is the focal length of the fourth lens, f5 is the focal length of the fifth lens, and f6 is the focal length of the sixth lens.

[0019] Preferably, each lens of the optical system satisfies the following conditions:

[0020] Nd1 > 2.0, Vd1 < 30;

[0021] Nd2 < 1.6, Vd2 > 53.2;

[0022] Nd3 > 1.55, Vd3 < 25;

[0023] Nd4 > 1.55, Vd4 < 62;

[0024] Nd5 > 1.6, Vd5 > 23;

[0025] Nd6 < 1.7, Vd6 < 65;

[0026] wherein, Nd1 is the refractive index of the first lens, Vd1 is the Abbe number of the first lens; Nd2 is the refractive index of the second lens, Vd2 is the Abbe number of the second lens; Nd3 is the refractive index of the third lens, Vd3 is the Abbe number of the third lens; Nd4 is the refractive index of the fourth lens, Vd4 is the Abbe number of the fourth lens; Nd5 is the refractive index of the fifth lens, Vd5 is the Abbe number of the fifth lens; and Nd6 is the refractive index of the sixth lens, Vd6 is the Abbe number of the sixth lens.

[0027] Preferably, the maximum angle of the chief ray of the full field of view of the optical system incident to the image plane, CRA, satisfies: CRA < 16°.

[0028] Preferably, the radius of curvature R1 of the object side of the first lens satisfies: 10 < R1 < 14.

[0029] Preferably, the radius of curvature R1 of the object side of the fifth lens satisfies: R1 < 3.5.

[0030] Preferably, the total optical length TTL of the optical system satisfies: TTL < 18 mm.

[0031] Preferably, the third lens is a glass or plastic lens.

[0032] Preferably, the F number of the optical system satisfies: 1.4 < F number < 1.7

[0033] Preferably, the full field of view FOV of the optical system satisfies: 97.8°≤FOV≤100°.

[0034] Preferably, the aperture is provided between the fourth lens and the fifth lens.

[0035] Preferably, the fifth lens and the sixth lens are bonded together to form a combined lens.

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

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

[0038] The present invention provides a large-aperture vehicle-mounted optical system and a camera module applied thereto, which are mainly composed of 6 lenses, wherein the object side of the first lens is convex, the image side is concave, and the optical focal power thereof is negative; the object side of the second lens is convex or concave, the image side is concave, and the optical focal power thereof is negative; the third lens has optical focal power; the fourth lens has optical focal power; the object side of the fifth lens is convex or concave, the image side is concave, and the optical focal power thereof is negative; the object side and image side of the sixth lens are both convex, and the optical focal power thereof is positive; the fifth lens and the sixth lens are bonded to each other to form a combined lens; the present application has a reasonable number of lenses and a simple structure, and by reasonably allocating the optical focal power of the lenses, optimizes the lens aberrations, improves the imaging quality of the optical system, and takes into account the characteristics of ultra-wide angle, large aperture, and excellent temperature characteristics, and has great potential in the market. 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 1 is a graph showing astigmatism and distortion of the optical system or camera module according to Example 1 of the present application;

[0042] Figure 3 is an MTF curve diagram of the optical system or camera module of Example 1 of the present application;

[0043] Figure 4 2 is a schematic structural diagram of an optical system or camera module according to embodiment 2 of the present application;

[0044] Figure 5 is an astigmatism and distortion curve diagram of the optical system or camera module of Example 2 of the present application;

[0045] Figure 6 : is an MTF curve diagram of the optical system or camera module of Example 2 of the present application;

[0046] Figure 7 Schematic diagram of the structure of the optical system or camera module according to Example 3 of the present application;

[0047] Figure 8 3 is a graph showing astigmatism and distortion of the optical system or camera module according to Example 3 of the present application;

[0048] Figure 9 This is the MTF curve diagram of the optical system or camera module of Example 3 of the present application. DETAILED DESCRIPTION

[0049] like Figure 1-9 As shown, the present application provides a vehicle-mounted optical system, which is composed of a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, an aperture 7, a fifth lens 5, a sixth lens 6, and an infrared filter 8 in sequence along the optical axis from the object plane to the image plane 8.

[0050] The object side of the first lens is convex, the image side is concave, and its optical power is negative;

[0051] The object side of the second lens is convex or concave, the image side is concave, and its optical power is negative;

[0052] The third lens has optical power;

[0053] The fourth lens has optical power;

[0054] The object side of the fifth lens is convex or concave, the image side is concave, and its optical power is negative;

[0055] The object side and image side of the sixth lens are both convex, and its optical power is positive;

[0056] The fifth lens and the sixth lens are cemented together to form a combined lens.

[0057] The optical system of the embodiment of the present invention and the optical system thereof are mainly composed of 6 lenses, the object side of the first lens is convex, the image side is concave, and its optical focal power is negative; the object side of the second lens is convex or concave, the image side is concave, and its optical focal power is negative; the third lens has optical focal power; the fourth lens has optical focal power; the object side of the fifth lens is convex or concave, the image side is concave, and its optical focal power is negative; the object and image sides of the sixth lens are both convex, and its optical focal power is positive; the fifth lens and the sixth lens are bonded to each other to form a combined lens; the present application has a reasonable number of lenses and a simple structure. By reasonably allocating the optical focal power of the lenses, optimizing the lens aberrations, and improving the imaging quality of the optical system, taking into account the characteristics of ultra-wide angle, large aperture, and excellent temperature characteristics, it has great potential in the market.

[0058] Further, as a preferred embodiment of the present application but not limited, each lens of the optical system satisfies the following conditions, wherein f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, f4 is the focal length of the fourth lens, f5 is the focal length of the fifth lens, and f6 is the focal length of the sixth lens:

[0059] -4.5 mm < f1 < -3.5 mm, which can make the first lens 1 have a large negative focal length, thereby reducing the astigmatism and field curvature of the optical system;

[0060] -3.2 mm < f2 < -2.3 mm, which can fine-tune and control the spherical aberration of the system by limiting the ratio of the focal length of the second lens 2 to the effective focal length of the optical imaging system within a reasonable range, thereby effectively improving the imaging quality of the system;

[0061] -13.7 mm < f3 < 5.5 mm, which can make the optical system have the advantages of super wide angle, large aperture, small volume, and excellent temperature characteristics by limiting the ratio of the focal length of the third lens 3 to the effective focal length of the optical imaging system within a reasonable range;

[0062] 3.5 mm < f4 < 5.1 mm, which can fine-tune and control the spherical aberration of the system by limiting the ratio of the focal length of the fourth lens 4 to the effective focal length of the optical imaging system within a reasonable range, thereby effectively improving the imaging quality of the system;

[0063] -1.62 mm < f5 < -0.97 mm, which can make the optical system have the advantages of super wide angle, large aperture, small volume, and excellent temperature characteristics by limiting the ratio of the focal length of the fifth lens 5 to the effective focal length of the optical imaging system within a reasonable range;

[0064] 0.96 mm < f6 < 1.65 mm, which can make the configured vehicle-mounted surround view optical system have the advantages of super wide angle, small caliber, large aperture, excellent temperature characteristics, compact structure, easy processing and installation, and high imaging quality.

[0065] Further, the refractive index Nd1 and Abbe number Vd1 of the first lens 1 satisfy: Nd1 > 2.0, Vd1 < 30, which can effectively reduce chromatic aberration, optimize lens aberration, and thereby effectively improve the imaging quality of the system;

[0066] Further, the refractive index Nd2 and Abbe number Vd2 of the second lens 2 satisfy: Nd2 < 1.6, Vd2 > 53.2, which can effectively reduce chromatic aberration, optimize lens aberration, and thereby effectively improve the imaging quality of the system;

[0067] Furthermore, the refractive index Nd3 and Abbe number Vd3 of the third lens 3 satisfy: Nd3>1.55, Vd3<25. This design can effectively reduce chromatic aberration, optimize lens aberration, and thus effectively improve the imaging quality of the system.

[0068] Furthermore, the refractive index Nd4 and Abbe number Vd4 of the fourth lens element 4 satisfy: Nd4>1.55, Vd4<62. This design can effectively reduce chromatic aberration, optimize lens aberration, and thus effectively improve the imaging quality of the system.

[0069] Furthermore, the refractive index Nd5 and Abbe number Vd5 of the fifth lens element 5 satisfy: Nd5>1.6, Vd5>23. This design can effectively reduce chromatic aberration, optimize lens aberration, and thus effectively improve the imaging quality of the system.

[0070] Furthermore, the refractive index Nd6 and the Abbe number Vd6 of the sixth lens 6 satisfy: Nd6<1.7, Vd6<65. This design can effectively reduce chromatic aberration, optimize lens aberration, and thus effectively improve the imaging quality of the system.

[0071] Furthermore, as a preferred embodiment of the present invention but not a limitation, the maximum angle CRA of the full-field chief ray incident on the image plane of the optical system satisfies: CRA < 16°. This design can make the CRA of the lens more compatible with the CRA of the chip, thereby improving the photosensitivity efficiency of the chip.

[0072] Furthermore, as a preferred embodiment of the present invention but not a limitation, the curvature radius R1 of the object side of the first lens element satisfies: 10 < R1 < 14. By controlling the object side of the first lens element 1, the total deflection angle of the object side of the first lens element 1 at the edge of the field of view can be reasonably controlled to be within a reasonable range.

[0073] Furthermore, as a preferred embodiment of the present invention but not limitation, the curvature radius R1 of the object surface side of the fifth lens satisfies: R1 < 3.5, which can effectively improve the focus offset under high and low temperature conditions.

[0074] Furthermore, as a preferred embodiment of the present invention but not a limitation, the total optical length TTL of the optical system satisfies: TTL ≤ 18 mm. This design can reduce the total optical length and effectively miniaturize the lens.

[0075] Furthermore, as a preferred embodiment of the present invention but not limiting, the third lens is a glass or plastic lens. This design can improve the performance of the system;

[0076] Furthermore, as a preferred embodiment of the present invention but not limiting, the F number and FOV of the optical system satisfy the following conditions: 1.4 ≤ F number ≤ 1.7, 97.8° ≤ FOV ≤ 100°. The large aperture configuration can increase the amount of light entering the optical system and improve the imaging quality. The ultra-wide angle meets the needs of users.

[0077] The refractive index Nd5 and Abbe number Vd5 of the fifth lens element, as well as the refractive index Nd6 and Abbe number Vd6 of the sixth lens element, satisfy the following conditions: Nd5 > 1.6, Vd5 > 23; Nd6 < 1.7, Vd6 < 65. This design increases the difference between the refractive index and Abbe number of the lenses, effectively reducing chromatic aberration.

[0078] Specifically, as a preferred embodiment of the present invention but not limiting, Figure 1-3 As shown, in this embodiment 1, the focal length f1 of the first lens 1 is -4.22 mm, the focal length f2 of the second lens 2 is -2.58 mm, the focal length f3 of the third lens 3 is 3.88 mm, the focal length f4 of the fourth lens 4 is 4.55 mm, the focal length f5 of the fifth lens 5 is -1.08 mm, the focal length f6 of the sixth lens 6 is 1.34 mm, and the total optical length TTL is 17.89 mm. The surface type, curvature radius, thickness and material parameters of each lens are shown in Table 1:

[0079] Table 1: Basic parameters of the optical system of Example 1

[0080]

[0081] In Table 1 above, along the optical axis from the object plane to the image plane 9, OBJ is the object plane; S1 and S2 correspond to the two surfaces of the first lens 1; S3 and S4 correspond to the two surfaces of the second lens 2; S5 and S6 correspond to the two surfaces of the third lens 3; S7 and S8 correspond to the two surfaces of the fourth lens 4; S10 and S11 correspond to the two surfaces of the fifth lens 5; S11 and S12 correspond to the two surfaces of the sixth lens 6; STO is the position of the aperture 7; S13 and S14 correspond to the two surfaces of the filter 8; and IMA corresponds to the image plane 9.

[0082] Furthermore, in Table 1, the object side and image side of any one of the second lens 2, the third lens 3, the fifth lens 5, and the sixth lens 6 are aspherical surfaces, and the surface shape of each aspherical lens can be defined by, but not limited to, the following aspherical surface formula:

[0083]

[0084] Where x is the distance from the corresponding point on the aspheric surface to the plane tangent to the vertex of the surface, h is the distance from the corresponding point on the aspheric surface to the optical axis, c is the curvature of the aspheric vertex, k is the conic coefficient, and Ai is the coefficient corresponding to the i-th higher-order term in the aspheric surface shape formula. Table 2 shows the conic coefficients and higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for various aspheric surfaces that can be used in Example 1.

[0085] Table 2: Aspheric surface related values ​​of the lens surface of Example 1

[0086]

[0087] Figure 2 The astigmatism and distortion curves of the optical imaging lens of Example 1 are shown. Astigmatism represents meridional image curvature and sagittal image curvature, and distortion represents the distortion magnitude corresponding to different image heights. Figure 3 The MTF curve of the optical imaging lens of Example 1 is shown, which represents the MTF values ​​in the meridian and sagittal directions of different fields of view at different spatial frequencies. Figure 2 and Figure 3 It can be seen that the optical imaging system provided in Example 1 can achieve good imaging quality and has higher imaging quality.

[0088] Specifically, as a preferred embodiment of the present invention but not limiting, Figure 4-6 As shown, in this embodiment 2, the focal length f1 of the first lens 1 is -3.85 mm, the focal length f2 of the second lens 2 is -3.06 mm, the focal length f3 of the third lens 3 is -13.3 mm, the focal length f4 of the fourth lens 4 is 3.78 mm, the focal length f5 of the fifth lens 5 is -1.16 mm, the focal length f6 of the sixth lens 6 is 1.08 mm, and the total optical length TTL is 17.92 mm. The surface type, curvature radius, thickness and material parameters of each lens are shown in Table 3:

[0089] Table 3: Basic parameters of the optical system of Example 2

[0090]

[0091] In Table 3 above, along the optical axis from the object plane to the image plane 9, OBJ is the object plane; S1 and S2 correspond to the two surfaces of the first lens 1; S3 and S4 correspond to the two surfaces of the second lens 2; S5 and S6 correspond to the two surfaces of the third lens 3; S7 and S8 correspond to the two surfaces of the fourth lens 4; S10 and S11 correspond to the two surfaces of the fifth lens 5; S11 and S12 correspond to the two surfaces of the sixth lens 6; STO is the position of the aperture 7; S13 and S14 correspond to the two surfaces of the filter 8; and IMA corresponds to the image plane 9.

[0092] Further, in Table 3, any one of the second lens 2, the third lens 3, the fifth lens 5 and the sixth lens 6 has a non-spherical object side surface and a non-spherical image side surface, and the surface type of each non-spherical lens can be defined by, but not limited to, the following non-spherical formula:

[0093]

[0094] wherein x is the distance from the corresponding point on the non-spherical surface to the plane tangent to the vertex of the surface, h is the distance from the corresponding point on the non-spherical surface to the optical axis, c is the curvature of the vertex of the non-spherical surface, k is the conic coefficient, and Ai is the coefficient corresponding to the i-th high order term in the non-spherical surface formula. Table 4 shows the conic coefficients and high order term coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of the non-spherical surfaces used in Example 2.

[0095] Table 4: Non-spherical related values of the lens surfaces in Example 2

[0096]

[0097] Figure 5 The astigmatism and distortion curves of the optical imaging lens of Example 2 are shown, wherein the astigmatism represents the meridional image surface curvature and the sagittal image surface curvature, and the distortion represents the distortion size values corresponding to different image heights; Figure 6 The MTF curves of the optical imaging lens of Example 2 are shown, which represent the meridional and sagittal MTF values of different fields of view at different spatial frequencies, and the MTF curves are shown in Figure 6. Figure 5 and Figure 6 It can be seen that the optical imaging system of Example 2 can achieve good imaging quality and has higher imaging quality.

[0098] Specifically, as a preferred embodiment of the present application but not limited, as shown in Figure 7-9 In this embodiment 3, the focal length f1 of the first lens 1 is -3.99 mm, the focal length f2 of the second lens 2 is -2.91 mm, the focal length f3 of the third lens 3 is -11.78 mm, the focal length f4 of the fourth lens 4 is 3.84 mm, the focal length f5 of the fifth lens 5 is -1.34 mm, the focal length f6 of the sixth lens 6 is 1.18 mm, and the total optical length TTL is 17.92 mm. The surface type, curvature radius, thickness and material parameters of each lens are shown in Table 5:

[0099] Table 5: Basic parameters of the optical system in Example 3

[0100]

[0101] In Table 5, along the optical axis from the object plane to the image plane 9, OBJ is the object plane; S1 and S2 correspond to the two surfaces of the first lens 1; S3 and S4 correspond to the two surfaces of the second lens 2; S5 and S6 correspond to the two surfaces of the third lens 3; S7 and S8 correspond to the two surfaces of the fourth lens 4; S10 and S11 correspond to the two surfaces of the fifth lens 5; S11 and S12 correspond to the two surfaces of the sixth lens 6; STO is the position of the stop 7; S13 and S14 correspond to the two surfaces of the filter 8; and IMA corresponds to the image plane 9.

[0102] Further, in Table 5, the object side surface and the image side surface of any one of the second lens 2, the third lens 3, the fifth lens 5, and the sixth lens 6 are aspherical surfaces, and the surface shape of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0103]

[0104] wherein x is the distance from the corresponding point on the aspherical surface to the tangent plane at the vertex of the surface, h is the distance from the corresponding point on the aspherical surface to the optical axis, c is the curvature at the vertex of the aspherical surface, k is the conic coefficient, and Ai is the coefficient corresponding to the i-th high-order term in the aspherical surface formula. Table 6 shows the conic coefficients and high-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of the aspherical surfaces in Example 3.

[0105] Table 6: Aspherical surface related numerical values of the lens surfaces in Example 3

[0106]

[0107] Figure 8 The astigmatism and distortion curves of the optical imaging lens in Example 3 are shown, wherein the astigmatism represents the meridional image surface curvature and the sagittal image surface curvature, and the distortion represents the distortion size value corresponding to different image heights; Figure 9 The MTF curve of the optical imaging lens in Example 3 is shown, which represents the meridional and sagittal direction MTF values at different spatial frequencies and different fields of view. Figure 8 and Figure 9 It can be seen that the optical imaging system in Example 3 can achieve good imaging quality and has higher imaging quality.

[0108] Further, in Examples 1-3, the basic data are as follows:

[0109] Table 7: Basic data of Examples 1-3

[0110]

[0111] The application discloses a camera module, which comprises at least an optical lens, and the optical lens is internally provided with the vehicle-mounted optical system.

[0112] The above is one or more embodiments provided in combination with specific contents, and does not mean that the specific implementation of the application is limited to the description. Any approximation, similarity or replacement of the method and structure of the application, or any technical deduction or replacement under the premise of the concept of the application, should be regarded as the protection scope of the application.

Claims

1. A large-aperture vehicle-mounted optical system, comprising, in order from the object plane to the image plane along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, the optical system comprising six lenses having optical power, characterized in that: The object side of the first lens is convex, the image side is concave, and its optical power is negative; The second lens has a concave object side and a concave image side, and its optical power is negative; The third lens has negative optical power; The fourth lens has optical power; The fifth lens has a convex object side and a concave image side, and its optical power is negative. The object side and image side of the sixth lens are both convex, and its optical power is positive; The fifth lens and the sixth lens are bonded together to form a combined lens; The total optical length TTL of the optical system satisfies: TTL = 17.92 mm; Each lens of the optical system meets the following conditions: -3.99mm≤f1≤-3.85mm; -3.06mm≤f2≤-2.91mm; -13.3mm≤f3≤-11.78mm; 3.78mm≤f4≤3.84mm; -1.34mm≤f5≤-1.16mm; 1.08mm≤f6≤1.18mm; Nd1=2.0; Nd2=1.54; Nd3=1.64; Nd4=1.95; Nd5=1.64; Nd6=1.54; Wherein, f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, f4 is the focal length of the fourth lens, f5 is the focal length of the fifth lens, f6 is the focal length of the sixth lens, Nd1 is the refractive index of the first lens; Nd2 is the refractive index of the second lens; Nd3 is the refractive index of the third lens; Nd4 is the refractive index of the fourth lens; Nd5 is the refractive index of the fifth lens; Nd6 is the refractive index of the sixth lens.

2. The large aperture vehicle-mounted optical system according to claim 1, wherein: The curvature radius R1 of the object surface side of the first lens satisfies: 11.54 mm ≤ R1 ≤ 11.808 mm.

3. The large aperture vehicle-mounted optical system according to claim 1, wherein: The curvature radius R5 of the object surface side of the fifth lens satisfies: 2.619 mm ≤ R5 ≤ 3.034 mm.

4. The large aperture vehicle-mounted optical system according to any one of claims 1 to 3, characterized in that: Each lens of the optical system meets the following conditions: Vd1=29.14; Vd2=55.71; Vd3=23.55; Vd4=17.93; Vd5=23.55; Vd6=55.98; Wherein, Vd1 is the Abbe number of the first lens; Vd2 is the Abbe number of the second lens; Vd3 is the Abbe number of the third lens; Vd4 is the Abbe number of the fourth lens; Vd5 is the Abbe number of the fifth lens; and Vd6 is the Abbe number of the sixth lens.

5. The large aperture vehicle-mounted optical system according to any one of claims 1 to 3, characterized in that: The maximum angle CRA of the full-field chief ray incident on the image plane of the optical system satisfies: 9.24°≤ CRA ≤11.73°.

6. The large aperture vehicle-mounted optical system according to any one of claims 1 to 3, characterized in that: The third lens is a glass lens or a plastic lens.

7. The large aperture vehicle-mounted optical system according to any one of claims 1 to 3, characterized in that: The F number of the optical system satisfies: 1.4≤F number≤1.6; and / or The full field of view FOV of the optical system satisfies: FOV=98°.

8. The large aperture vehicle-mounted optical system according to any one of claims 1 to 3, characterized in that: The aperture is arranged between the fourth lens and the fifth lens.

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

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