A high-pixel panoramic optical system and camera module

Abstract

The present invention discloses a high-pixel panoramic optical system and a camera module, wherein the optical system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens which are sequentially distributed along the optical axis from the object plane to the imaging plane, wherein the object plane side of the first lens is convex, and the image plane side is concave; the object plane side of the second lens is convex, and the image plane side is concave; the object plane side of the third lens is convex, and the image plane side is concave; one of the object plane side and the image plane side of the fourth lens is convex, and the other is convex or flat; the object plane side of the fifth lens is convex or flat, and the image plane side is convex, or the object plane side is convex, and the image plane side is concave; the object plane side of the sixth lens is concave or convex, and the image plane side is concave; the object plane side of the seventh lens is convex, and the image plane side is concave. Based on a reasonable optical configuration, the present invention adopts a combination of seven lenses and a reflective element to realize an optical system and a camera module with high pixels, a large target surface, and a small volume.

Description

Technical Field

[0001] The present application relates to the technical field of optical systems and camera modules, and in particular to a high-pixel panoramic optical system and camera module. Background Art

[0002] In recent years, with the widespread application of panoramic VR / AR, its application scenarios have become more diversified; the quality requirements for lenses have become increasingly higher. Its low-pixel, small-target COMS chip and large-volume lens design with poor imaging clarity cannot meet the requirements of the majority of photography enthusiasts. Summary of the invention

[0003] In order to solve the problem of low pixel, small target surface and poor clarity of large-volume imaging of COMS chips of existing lenses, the present application provides a high-pixel panoramic optical system, and the technical solution adopted is:

[0004] A high-pixel panoramic optical system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged along an optical axis from an object plane to an imaging plane.

[0005] The first lens has a negative refractive power, a convex surface on the object side and a concave surface on the image side;

[0006] The second lens has a negative refractive power, a convex surface on the object side and a concave surface on the image side;

[0007] The third lens has a positive refractive power, a convex surface on the object side and a concave surface on the image side;

[0008] The fourth lens has a positive refractive power, and one of the object side and the image side of the fourth lens is a convex surface, and the other is a convex surface or a flat surface;

[0009] The fifth lens has a positive optical power, and the object side of the fifth lens is a convex surface or a flat surface, and the image side is a convex surface, or the object side is a convex surface, and the image side is a concave surface;

[0010] The sixth lens has a negative refractive power, a concave or convex object surface, and a concave image surface.

[0011] The seventh lens has positive refractive power, a convex surface on the object side and a concave surface on the image side.

[0012] Preferably, the focal lengths of the lenses of the optical system and the high-pixel panoramic optical system satisfy the following conditions:

[0013] -15.23<f1 / f<-13.55,

[0014] -3.58<f 2 / f<-2.54,

[0015] 6.04<f3 / f<7.13,

[0016] 3.58<f4 / f<4.54,

[0017] 4.04<f7 / f<5.16,

[0018] Where f is the focal length of the high-pixel panoramic optical system, f 1 is the focal length of the first lens, f 2 is the focal length of the second lens, f 3 is the focal length of the third lens, f 4 is the focal length of the fourth lens, f 7 is the focal length of the seventh lens.

[0019] Preferably, the material refractive index Nd1 and the material Abbe constant Vd1 of the first lens satisfy: Nd1>1.70, Vd1<56; and / or

[0020] The material refractive index Nd2 and the material Abbe constant Vd2 of the second lens satisfy: Nd2<1.84, Vd2>40; and / or

[0021] The material refractive index Nd3 and the material Abbe constant Vd3 of the third lens satisfy: Nd3>1.79, Vd3<46; and / or

[0022] The material refractive index Nd4 and the material Abbe constant Vd4 of the fourth lens satisfy: Nd4<1.61, Vd4>68; and / or

[0023] The material Abbe constant Vd5 of the fifth lens and the material Abbe constant Vd6 of the sixth lens satisfy: Vd6-Vd5>40; and / or

[0024] The material refractive index Nd7 and the material Abbe constant Vd7 of the seventh lens satisfy: Nd7<1.65, Vd7>60.

[0025] Preferably, the ratio of the total length TTL of the optical lens of the high-pixel panoramic optical system to the focal length f of the high-pixel panoramic optical system satisfies: TTL / f>20.

[0026] Preferably, the diagonal field of view DFOV of the high-pixel panoramic optical system is greater than 180°.

[0027] Preferably, the fifth lens and the sixth lens are glued to each other.

[0028] Preferably, the optical system further comprises a reflective element disposed between the second lens and the third lens, wherein the reflective element is used to reflect the light beam passing through the second lens to the third lens.

[0029] Preferably, the optical system further comprises a stop disposed between the fourth lens and the fifth lens.

[0030] Preferably, the second lens, the third lens and the seventh lens are aspherical lenses.

[0031] Based on the above content, the present application also provides a camera module, which specifically includes two groups of the above-mentioned high-pixel panoramic optical systems, the two groups of the high-pixel panoramic optical systems are symmetrically distributed, or the two groups of the high-pixel panoramic optical systems are centrally symmetrically arranged, and the imaging surfaces of the two groups of the high-pixel panoramic optical systems are arranged in a centrally symmetrical manner.

[0032] Compared with the prior art, this application has the following advantages:

[0033] 1. Based on a reasonable optical configuration, a combination of seven lenses and one reflective element is used to achieve a high-pixel panoramic optical system and camera module with high pixels, large target area and small volume;

[0034] 2. All lenses can be made of full glass to ensure the long-term reliability and service life of the high-pixel panoramic optical system and camera module;

[0035] 3. It has excellent temperature characteristics and can meet the use of chips with more than 48 million pixels. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for describing the embodiments are briefly introduced below.

[0037] Figure 1 This is a schematic structural diagram of the high-pixel panoramic optical system described in Example 1 of the present application;

[0038] Figure 2 This is a schematic diagram of the structure of the camera module described in Example 2 of the present application;

[0039] Figure 3 This is a relative illumination curve diagram of the camera module described in Example 2 of the present application;

[0040] Figure 4 This is a CRA curve diagram of the camera module described in Example 2 of the present application;

[0041] Figure 5 This is an MTF curve diagram of the camera module described in Example 2 of the present application at a temperature of 25°C;

[0042] Figure 6 This is an MTF curve diagram of the camera module described in Example 2 of the present application at a temperature of -20°C;

[0043] Figure 7This is an MTF curve diagram of the camera module described in Example 2 of the present application at a temperature of 85°C;

[0044] Figure 8 This is a lens distortion curve diagram of the camera module described in Example 2 of the present application;

[0045] Fig. 9 This is a schematic diagram of the structure of the camera module described in Example 3 of the present application;

[0046] Fig.10 This is a schematic structural diagram of the high-pixel panoramic optical system described in Example 4 of the present application;

[0047] Fig.11 This is a schematic structural diagram of the high-pixel panoramic optical system described in Example 5 of the present application;

[0048] Fig.12 This is a schematic structural diagram of the high-pixel panoramic optical system described in Example 6 of the present application;

[0049] Fig.13 This is a schematic diagram of the structure of the high-pixel panoramic optical system described in Example 7 of the present application. DETAILED DESCRIPTION

[0050] In order to make the technical problems, technical solutions and beneficial effects solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0051] It should be understood that the terms "first", "second", etc. are used in this application to describe various information, but this information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0052] Example 1

[0053] Reference Figure 1, Embodiment 1 of the present application is proposed, wherein the high-pixel panoramic optical system described in Embodiment 1 comprises a first lens 1, a second lens 2, a reflective element 8, a third lens 3, a fourth lens 4, an aperture 9, a fifth lens 5, a sixth lens 6 and a seventh lens 7 which are sequentially distributed along the optical axis from the object plane to the imaging plane, and

[0054] The first lens 1 has a negative refractive power, a convex surface on the object side and a concave surface on the image side.

[0055] The second lens 2 has a negative refractive power, a convex surface on the object side and a concave surface on the image side.

[0056] The third lens 3 has a positive refractive power, a convex surface on the object side and a concave surface on the image side.

[0057] The fourth lens 4 has a positive refractive power, a convex surface on the object side and a convex surface on the image side.

[0058] The fifth lens 5 has a positive refractive power, a convex surface on the object side, and a convex surface on the image side.

[0059] The sixth lens 6 has a negative refractive power, a concave surface on its object side and a concave surface on its image side.

[0060] The seventh lens element 7 has positive refractive power, a convex surface on the object side and a concave surface on the image side.

[0061] Furthermore, as another preferred embodiment of the present invention but not limiting, each lens of the optical system satisfies the following conditions:

[0062] -15.23<f 1 / f<-13.55,

[0063] -3.58<f 2 / f<-2.54,

[0064] 6.04<f 3 / f<7.13,

[0065] 3.58<f 4 / f<4.54,

[0066] 4.04<f 7 / f<5.16,

[0067] Where f is the focal length of the high-pixel panoramic optical system, f 1 is the focal length of the first lens 1, f 2 is the focal length of the second lens 2, f 3 is the focal length of the third lens 3, f 4 is the focal length of the fourth lens 4, f 7 is the focal length of the seventh lens 7 so as to reasonably distribute the optical power.

[0068] Furthermore, as another preferred embodiment of the present invention but not limiting, the material refractive index Nd1 and the material Abbe constant Vd1 of the first lens 1 satisfy: Nd1>1.70, Vd1<56; and / or

[0069] The material refractive index Nd2 and the material Abbe constant Vd2 of the second lens 2 satisfy: Nd2<1.84, Vd2>40; and / or

[0070] The material refractive index Nd3 and the material Abbe constant Vd3 of the third lens 3 satisfy: Nd3>1.79, Vd3<46; and / or

[0071] The material refractive index Nd4 and the material Abbe constant Vd4 of the fourth lens 4 satisfy: Nd4<1.61, Vd4>68; and / or

[0072] The material Abbe constant Vd5 of the fifth lens 5 and the material Abbe constant Vd6 of the sixth lens 6 satisfy: Vd6-Vd5>40; and / or

[0073] The material refractive index Nd7 and the material Abbe constant Vd7 of the seventh lens 7 satisfy: Nd7<1.65, Vd7>60, so as to ensure good optical performance.

[0074] Specifically, basic parameters of each lens of the high-pixel panoramic optical system described in this embodiment are shown in Table 1.

[0075] Table 1 Basic parameters of the camera module described in Example 1

[0076]

[0077]

[0078] In Table 1, along the optical axis from the object plane to the image plane S19, S1 and S2 are two surfaces of the first lens 1, S3 and S4 are two surfaces of the second lens 2; S5 and S6 are two surfaces of the reflecting element 8, S7 and S8 are two surfaces of the third lens 3; S9 ​​and S10 are two surfaces of the fourth lens 4; S12 and S13 are two surfaces of the fifth lens 5; S13 and S14 are two surfaces of the sixth lens 6; S15 and S16 are two surfaces of the seventh lens 7, S17 and S18 are two surfaces of the filter, and S19 is the image plane.

[0079] Furthermore, as another preferred embodiment of the present invention but not limiting, the ratio of the total length TTL of the optical lens of the high-pixel panoramic optical system to the focal length f satisfies: TTL / f>20.

[0080] Furthermore, the diagonal field of view DFOV of the high-pixel panoramic optical system is greater than 180°, and the optical system in this embodiment has a larger field of view than the prior art.

[0081] In this embodiment, the focal length f of the optical system is 1.40 mm, the relative aperture F / NO is 1.9, the vertical field of view DFOV is 200°, the total length TTL of the optical lens of the high-pixel panoramic optical system is 28.705 mm, the focal length f of the optical system is 1.40 mm, and the ratio of the total length TTL of the optical lens of the high-pixel panoramic optical system to the focal length f of the optical system is 20.50.

[0082] As a preferred but not limiting embodiment of the present invention, the fifth lens 5 and the sixth lens 6 are glued together to form a combined lens, which has a simple structure and a compact size, and can ensure good optical performance.

[0083] As a preferred but not limiting embodiment of the present invention, the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6 and the seventh lens 7 are all glass lenses, so that the optical system has excellent temperature characteristics and high temperature stability, thereby ensuring the long-term reliability and service life of the high-pixel panoramic optical system and the camera module.

[0084] As a preference but not limitation of the present invention, a reflective element 8 is further included between the second lens 2 and the third lens 3 , and the reflective element 8 is used to reflect the light beam passing through the second lens 2 to the third lens 3 .

[0085] The reflective element may be a reflective plane mirror or a right-angle reflective prism. In this embodiment, the reflective element is a right-angle reflective prism. The reflective element is used to redirect the light path, thereby reducing the volume of the optical system.

[0086] As a preference but not limitation of the present invention, a stop 9 is further included between the fourth lens 4 and the fifth lens 5 to ensure good optical performance.

[0087] As a preferred but not limiting embodiment of the present invention, the second lens 2, the third lens 3 and the seventh lens 7 are aspherical lenses. The use of aspherical lenses can correct the aberration of the lens, improve the lens resolution, and make the image clearer.

[0088] The aspheric parameters of the second lens 2, the third lens 3 and the seventh lens 7 satisfy the following relationship:

[0089]

[0090] Among them, z is the distance of the surface from the vertex of the surface in the direction of the optical axis, the parameter c = 1 / R, which is the curvature corresponding to the radius, y is the radial coordinate, and its unit is the same as the unit of lens length, K is the conic quadratic curve coefficient, A4, A6, A8, A10, A12, A14, and A16 represent the surface coefficients corresponding to the fourth-order, sixth-order, eighth-order, tenth-order, fourteenth-order, and sixteenth-order mirror coordinates respectively.

[0091] Aspheric surface related parameters of the second lens 2, the third lens 3 and the seventh lens 7 are shown in Table 2.

[0092] Table 2 Aspheric surface related parameters of the second lens 2, the third lens 3 and the seventh lens 7

[0093]

[0094] Example 2

[0095] Reference Figure 2 As a preferred embodiment of the present invention, Example 2 discloses a camera module, comprising two high-pixel panoramic optical systems as described in Example 1, the two groups of high-pixel panoramic optical systems are centrally symmetrically arranged, and the imaging surfaces IMA of the two groups of high-pixel panoramic optical systems are centrally symmetrically arranged.

[0096] In this embodiment, the focal length f of the optical system is 1.40 mm, the relative aperture F / NO is 1.9, the diagonal field of view DFOV is 200°, the total length TTL of the optical lens of the high-pixel panoramic optical system is 28.705 mm, the focal length f of the optical system is 1.40 mm, and the ratio of the total length TTL of the optical lens of the high-pixel panoramic optical system to the focal length f of the optical system is 20.50.

[0097] In this embodiment, the lateral distance between the two high-pixel panoramic optical systems after splicing, that is, the distance T between the two first lenses, is 33.20 mm.

[0098] Reference Figure 3 The relative illumination curve of the camera module of this embodiment is shown. The relative illumination RI of the full field of view of the camera module is 0.643. Figure 4 The CRA curve of the camera module of this embodiment is shown, that is, the image plane chief ray angle CRA of the camera module is 30.68°, combined with Figure 3 and Figure 4 It can be seen that RI / cos 4 (CRA) is 1.175, and the full field of view relative illumination of the camera module described in this embodiment is large.

[0099] The first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6 and the seventh lens 7 are all glass lenses. Figure 5-7 The following are the MTF curves of the camera module of this embodiment at temperatures of 25°C, -20°C and 85°C. Figure 5-7 It can be seen that the camera module described in the present application has excellent temperature characteristics, ensuring the long-term reliability and service life of the high-pixel panoramic optical system and the camera module, and has high reliability. The camera module described in this embodiment can meet the use of chips with more than 48 million pixels.

[0100] Reference Figure 8 The figure shows a lens distortion curve diagram of the camera module described in this embodiment. It can be seen that the lens distortion within the field of view of the camera module described in this application is small.

[0101] Example 3

[0102] Reference Fig. 9 , Example 3 of the present application is proposed, and Example 3 discloses a camera module, including two optical systems as described in Example 1, and the two optical systems are symmetrically distributed.

[0103] Example 4

[0104] Reference Fig.10 , Example 4 of the present application is proposed, and the high-pixel panoramic optical system described in Example 4 includes a first lens 1, a second lens 2, a reflective element 8, a third lens 3, a fourth lens 4, an aperture 9, a fifth lens 5, a sixth lens 6, and a seventh lens 7, which are sequentially distributed along the optical axis from the object plane to the image plane, and

[0105] The first lens 1 has a negative refractive power, a convex surface on the object side and a concave surface on the image side;

[0106] The second lens 2 has a negative refractive power, a convex surface on the object side and a concave surface on the image side;

[0107] The third lens 3 has a positive refractive power, a convex surface on the object side and a concave surface on the image side;

[0108] The fourth lens 4 has a positive refractive power, a convex surface on the object side and a convex surface on the image side;

[0109] The fifth lens 5 has a positive refractive power, a flat surface on its object side and a convex surface on its image side;

[0110] The sixth lens 6 has a negative refractive power, a concave surface on its object side and a concave surface on its image side;

[0111] The seventh lens element 7 has positive refractive power, a convex surface on the object side and a concave surface on the image side.

[0112] Example 5

[0113] Reference Fig.11, Example 5 of the present application is proposed, and the high-pixel panoramic optical system described in Example 5 includes a first lens 1, a second lens 2, a reflective element 8, a third lens 3, a fourth lens 4, an aperture 9, a fifth lens 5, a sixth lens 6, and a seventh lens 7, which are sequentially distributed along the optical axis from the object plane to the image plane, and

[0114] The first lens 1 has a negative refractive power, a convex surface on the object side and a concave surface on the image side;

[0115] The second lens 2 has a negative refractive power, a convex surface on the object side and a concave surface on the image side;

[0116] The third lens 3 has a positive refractive power, a convex surface on the object side and a concave surface on the image side;

[0117] The fourth lens 4 has a positive refractive power, a convex surface on the object side and a convex surface on the image side;

[0118] The fifth lens 5 has a positive refractive power, a convex surface on the object side and a concave surface on the image side;

[0119] The sixth lens 6 has a negative refractive power, a convex surface on the object side and a concave surface on the image side;

[0120] The seventh lens element 7 has positive refractive power, a convex surface on the object side and a concave surface on the image side.

[0121] Example 6

[0122] Reference Fig.12 , Example 6 of the present application is proposed, and the high-pixel panoramic optical system described in Example 6 includes a first lens 1, a second lens 2, a reflective element 8, a third lens 3, a fourth lens 4, an aperture 9, a fifth lens 5, a sixth lens 6, and a seventh lens 7, which are sequentially distributed along the optical axis from the object plane to the image plane, and

[0123] The first lens 1 has a negative refractive power, a convex surface on the object side and a concave surface on the image side;

[0124] The second lens 2 has a negative refractive power, a convex surface on the object side and a concave surface on the image side;

[0125] The third lens 3 has a positive refractive power, a convex surface on the object side and a concave surface on the image side;

[0126] The fourth lens 4 has a positive refractive power, a flat surface on its object side and a convex surface on its image side;

[0127] The fifth lens 5 has a positive refractive power, a convex surface on the object side and a convex surface on the image side;

[0128] The sixth lens 6 has a negative refractive power, a concave surface on its object side and a concave surface on its image side;

[0129] The seventh lens element 7 has positive refractive power, a convex surface on the object side and a concave surface on the image side.

[0130] Example 7

[0131] Reference Fig.13 , Example 7 of the present application is proposed, and the high-pixel panoramic optical system described in Example 7 includes a first lens 1, a second lens 2, a reflective element 8, a third lens 3, a fourth lens 4, an aperture 9, a fifth lens 5, a sixth lens 6, and a seventh lens 7, which are sequentially distributed along the optical axis from the object plane to the image plane, and

[0132] The first lens 1 has a negative refractive power, a convex surface on the object side and a concave surface on the image side;

[0133] The second lens 2 has a negative refractive power, a convex surface on the object side and a concave surface on the image side;

[0134] The third lens 3 has a positive refractive power, a convex surface on the object side and a concave surface on the image side;

[0135] The fourth lens 4 has a positive refractive power, a convex surface on the object side and a flat surface on the image side;

[0136] The fifth lens 5 has a positive refractive power, a convex surface on the object side and a convex surface on the image side;

[0137] The sixth lens 6 has a negative refractive power, a concave surface on its object side and a concave surface on its image side;

[0138] The seventh lens element 7 has positive refractive power, a convex surface on the object side and a concave surface on the image side.

[0139] The above is an implementation method provided in combination with specific content, and it is not considered that the specific implementation of this application is limited to these descriptions. Any similarity or similarity with the method, structure, etc. of this application, or any technical deduction or replacement made on the premise of the concept of this application, shall be deemed to be within the scope of protection of this application.

Claims

1. A high-pixel panoramic optical system, characterized in that: The invention comprises a first lens (1), a second lens (2), a third lens (3), a fourth lens (4), a fifth lens (5), a sixth lens (6), and a seventh lens (7) which are sequentially distributed along the optical axis from the object plane to the imaging plane. The first lens (1) has a negative optical power, a convex surface on the object side and a concave surface on the image side; The second lens (2) has a negative optical power, a convex surface on the object side and a concave surface on the image side; The third lens (3) has a positive focal power, a convex surface on the object side and a concave surface on the image side; The fourth lens (4) has a positive optical power, and one of the object side and the image side of the fourth lens (4) is a convex surface, and the other is a convex surface or a flat surface; The fifth lens (5) has a positive optical power, and the object side of the fifth lens (5) is a convex surface or a flat surface, and the image side is a convex surface, or the object side is a convex surface, and the image side is a concave surface; The sixth lens (6) has a negative focal power, a concave or convex object surface, and a concave image surface. The seventh lens (7) has a positive refractive power, a convex surface on the object side and a concave surface on the image side; It also comprises a reflective element (8) arranged between the second lens (2) and the third lens (3), wherein the reflective element (8) is used to reflect the light beam passing through the second lens (2) to the third lens (3); The focal lengths of the lenses of the optical system and the high-pixel panoramic optical system satisfy the following conditions: -15.23<f1 / f<-13.55, -3.58<f2 / f<-2.54, 6.04<f3 / f<7.13, 3.58<f4 / f<4.54, 4.04<f7 / f<5.16, wherein f is the focal length of the high-pixel panoramic optical system, f1 is the focal length of the first lens (1), f2 is the focal length of the second lens (2), f3 is the focal length of the third lens (3), f4 is the focal length of the fourth lens (4), and f7 is the focal length of the seventh lens (7).

2. The high-pixel panoramic optical system according to claim 1, characterized in that: The material refractive index Nd1 and the material Abbe constant Vd1 of the first lens (1) satisfy: Nd1>1.70, Vd1<56; and / or The material refractive index Nd2 and the material Abbe constant Vd2 of the second lens (2) satisfy: Nd2<1.84, Vd2>40; and / or The material refractive index Nd3 and the material Abbe constant Vd3 of the third lens (3) satisfy: Nd3>1.79, Vd3<46; and / or The material refractive index Nd4 and the material Abbe constant Vd4 of the fourth lens (4) satisfy: Nd4<1.61, Vd4>68; and / or The material Abbe constant Vd5 of the fifth lens (5) and the material Abbe constant Vd6 of the sixth lens (6) satisfy: Vd6-Vd5>40; and / or The material refractive index Nd7 and the material Abbe constant Vd7 of the seventh lens (7) satisfy the following conditions: Nd7<1.65, Vd7>60.

3. The high-pixel panoramic optical system according to claim 1, characterized in that: The ratio of the total length TTL of the optical lens of the high-pixel panoramic optical system to the focal length f of the high-pixel panoramic optical system satisfies: TTL / f>20.

4. The high-pixel panoramic optical system according to claim 1, characterized in that: The diagonal field of view DFOV of the high-pixel panoramic optical system is greater than 180°.

5. The high-pixel panoramic optical system according to claim 1, characterized in that: The fifth lens (5) and the sixth lens (6) are glued to each other.

6. The high-pixel panoramic optical system according to claim 1, characterized in that: It also includes an aperture stop (9) arranged between the fourth lens (4) and the fifth lens (5).

7. The high-pixel panoramic optical system according to claim 1, characterized in that: The second lens (2), the third lens (3) and the seventh lens (7) are aspherical lenses.

8. A camera module, characterized in that: The method comprises two groups of high-pixel panoramic optical systems as described in any one of claims 1 to 7, wherein the two groups of high-pixel panoramic optical systems are symmetrically distributed, or the two groups of high-pixel panoramic optical systems are centrally symmetrically arranged, and the imaging surfaces of the two groups of high-pixel panoramic optical systems are arranged in a centrally symmetrical manner.

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