Optical image capturing system

Abstract

The optical imaging system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens and the ninth lens are sequentially arranged from the object side of the optical imaging system to the imaging surface of the optical imaging system, and a third lens having a negative refractive power, an Abbe number of the third lens being smaller than an Abbe number of the first lens and smaller than an Abbe number of the second lens, and satisfying TTL / (2 * IMG HT) lt; wherein TTL is the distance from the object-side surface of the first lens to the imaging surface, and IMG HT is half the diagonal length of the imaging surface.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2023-0057877 filed on May 3, 2023, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety for all purposes by reference. Technical Field

[0003] The present disclosure relates to optical imaging systems. Background Art

[0004] Recent portable terminals are equipped with a camera including an optical imaging system including a plurality of lenses to enable video calling and image acquisition.

[0005] Furthermore, as the functions of cameras in portable terminals are gradually increased, the demand for cameras of portable terminals with high resolution is also increasing.

[0006] Furthermore, as portable terminals become smaller, slimmer cameras for portable terminals are required, and thus there is a need to develop slim and high-resolution optical imaging systems. Utility Model Content

[0007] The purpose of providing this summary of the utility model is to introduce a selection of utility model concepts in a brief form, and these utility model concepts will be further described in the following detailed description. This summary of the utility model is not intended to identify the key features or essential features of the subject matter claimed for protection, nor to help determine the scope of the subject matter claimed for protection.

[0008] In a general aspect, an optical imaging system includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens arranged in sequence along the optical axis of the optical imaging system from the object side of the optical imaging system toward the imaging plane of the optical imaging system, wherein the first lens has positive refractive power, the second lens has positive refractive power, and the third lens has negative refractive power, the Abbe number of the third lens is smaller than the Abbe number of the first lens and smaller than the Abbe number of the second lens, and satisfies TTL / (2×IMG HT)<0.7, wherein TTL is the distance from the object side of the first lens to the imaging plane along the optical axis, and IMG HT is half of the diagonal length of the imaging plane.

[0009] Any one or both of v1-v3<45 and v1-v5<45 may be satisfied, where v1 is the Abbe number of the first lens, v3 is the Abbe number of the third lens, and v5 is the Abbe number of the fifth lens.

[0010] It can satisfy 35 < v3 + v5 < 45.

[0011] It can satisfy 0 < f1 / f < 30, where f1 is the focal length of the first lens and f is the total focal length of the optical imaging system.

[0012] It can satisfy 0 < f2 / f < 3, where f2 is the focal length of the second lens and f is the total focal length of the optical imaging system.

[0013] It can satisfy -3 < f3 / f < 0, where f3 is the focal length of the third lens and f is the total focal length of the optical imaging system.

[0014] It can satisfy 0.4 < |f12 / f3| < 0.6, where f12 is the combined focal length of the first lens and the second lens, and f3 is the focal length of the third lens.

[0015] It can satisfy 4.5 < f1 / f2 < 21, where f1 is the focal length of the first lens and f2 is the focal length of the second lens.

[0016] It can satisfy 0.4 < |f2 / f3| < 0.7, where f2 is the focal length of the second lens.

[0017] It can satisfy 0.09 < |f3 / f1| < 0.32, where f1 is the focal length of the first lens.

[0018] It can satisfy TTL / f < 1.5 and BFL / f < 0.5, where BFL is the distance along the optical axis from the image side of the ninth lens to the imaging surface, and f is the total focal length of the optical imaging system.

[0019] It can satisfy Fno ≤ 1.69, where Fno is the F-number of the optical imaging system.

[0020] It can satisfy FOV × IMG HT / f > 60°, where FOV is the field of view angle of the optical imaging system and f is the total focal length of the optical imaging system.

[0021] It can satisfy any one or both of SWA11 < 25° and SWA21 < 36°, where SWA11 is the sweep angle at the end of the effective diameter of the object side of the first lens, and SWA21 is the sweep angle at the end of the effective diameter of the object side of the second lens.

[0022] Each of the first lens to the sixth lens can have a convex object side in its paraxial region and a concave image side in its paraxial region.

[0023] The sum of the Abbe number of the third lens and the Abbe number of the fifth lens can be less than the Abbe number of the fourth lens.

[0024] The ninth lens may have negative refractive power, have a convex object-side surface in a paraxial region thereof, and have a concave image-side surface in a paraxial region thereof.

[0025] Each of the first lens and the second lens may have an Abbe number greater than 54 and less than 57, and the third lens may have an Abbe number greater than 18 and less than 24.

[0026] The fifth lens may have a refractive index greater than 1.64 and an Abbe number less than 21.

[0027] Two of the fifth to seventh lenses may have a refractive index greater than 1.61 and an Abbe number less than 26.

[0028] The Abbe number of the seventh lens may be smaller than the Abbe number of the eighth lens and may be smaller than the Abbe number of the ninth lens.

[0029] The focal length of the second lens may be smaller than an absolute value of the focal length of the third lens, and the absolute value of the focal length of the third lens may be smaller than the focal length of the first lens.

[0030] The optical imaging system may have a field of view greater than 80° and less than 85°.

[0031] Other features and aspects will be apparent from the following detailed description, the accompanying drawings, and the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a structural diagram of an optical imaging system according to a first embodiment of the present disclosure.

[0033] Figure 2 It is shown Figure 1 Graph of the aberration characteristics of the optical imaging system shown in .

[0034] Figure 3 is a structural diagram of an optical imaging system according to a second embodiment of the present disclosure.

[0035] Figure 4 It is shown Figure 3 Graph of the aberration characteristics of the optical imaging system shown in .

[0036] Figure 5 is a structural diagram of an optical imaging system according to a third embodiment of the present disclosure.

[0037] Figure 6 It is shown Figure 5 Graph of the aberration characteristics of the optical imaging system shown in .

[0038] Figure 7 is a structural diagram of an optical imaging system according to a fourth embodiment of the present disclosure.

[0039] Figure 8 It is shown Figure 7 Graph of the aberration characteristics of the optical imaging system shown in .

[0040] Fig. 9 is a structural diagram of an optical imaging system according to a fifth embodiment of the present disclosure.

[0041] Fig.10 It is shown Fig. 9 Graph of the aberration characteristics of the optical imaging system shown in .

[0042] Fig.11 is a structural diagram of an optical imaging system according to a sixth embodiment of the present disclosure.

[0043] Fig.12 It is shown Fig.11 Graph of the aberration characteristics of the optical imaging system shown in .

[0044] Fig.13 is a structural diagram of an optical imaging system according to the seventh embodiment of the present disclosure.

[0045] Fig.14 It is shown Fig.13 Graph of the aberration characteristics of the optical imaging system shown in .

[0046] Fig.15 is a structural diagram of an optical imaging system according to an eighth embodiment of the present disclosure.

[0047] Fig.16 It is shown Fig.15 Graph of the aberration characteristics of the optical imaging system shown in .

[0048] Fig.17 is a structural diagram of an optical imaging system according to a ninth embodiment of the present disclosure.

[0049] Fig.18 It is shown Fig.17 Graph of the aberration characteristics of the optical imaging system shown in .

[0050] Fig.19 is a structural diagram of an optical imaging system according to a tenth embodiment of the present disclosure.

[0051] Fig. 20 It is shown Fig.19 Graph of the aberration characteristics of the optical imaging system shown in .

[0052] Fig.21 is a structural diagram of an optical imaging system according to the eleventh embodiment of the present disclosure.

[0053] Fig. 22 It is shown Fig.21Graph of the aberration characteristics of the optical imaging system shown in .

[0054] Fig.23 is a structural diagram of an optical imaging system according to the twelfth embodiment of the present disclosure.

[0055] Fig.24 It is shown Fig.23 Graph of the aberration characteristics of the optical imaging system shown in .

[0056] Fig.25 is a structural diagram of an optical imaging system according to the thirteenth embodiment of the present disclosure.

[0057] Fig.26 It is shown Fig.25 Graph of the aberration characteristics of the optical imaging system shown in .

[0058] Fig. 27 is a structural diagram of an optical imaging system according to a fourteenth embodiment of the present disclosure.

[0059] Fig.28 It is shown Fig. 27 Graph of the aberration characteristics of the optical imaging system shown in .

[0060] Fig.29 is a structural diagram of an optical imaging system according to the fifteenth embodiment of the present disclosure.

[0061] Fig.30 It is shown Fig.29 Graph of the aberration characteristics of the optical imaging system shown in .

[0062] Fig.31 The sweep angles at specific locations on the object side of the lens are shown.

[0063] In all drawings and detailed description, the same reference numerals refer to the same elements. For the purpose of clarity, illustration and convenience, the drawings may not be drawn to scale, and the relative sizes, proportions and depictions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0064] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the method, device and / or system described in this application. However, various changes, modifications and equivalences of the method, device and / or system described in this application will be apparent after understanding the disclosure of this application. For example, the order of operations described in this application is merely an example, and except for the operations that must occur in a specific order, it is not limited to the order set forth in this application, but can be changed as will be apparent after understanding the disclosure of this application. In addition, for greater clarity and brevity, the description of known features may be omitted.

[0065] The features described in this application can be implemented in different forms and should not be interpreted as being limited to the examples described in this application. Rather, the examples described in this application are provided only to illustrate some of the many possible ways to implement the methods, devices and / or systems described in this application, which will be apparent after understanding the disclosure of this application.

[0066] Throughout the specification, when an element such as a layer, a region, or a substrate is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” the other element, or one or more other elements may be present between the element and the other element. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, no other elements may be present between the element and the other element.

[0067] As used in this application, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0068] Although the terms "first", "second" and "third" may be used in this application to describe various components, components, regions, layers or sections, these components, components, regions, layers or sections are not limited by these terms. More specifically, these terms are only used to distinguish one component, component, region, layer or section from another component, component, region, layer or section. Therefore, without departing from the teachings of the examples described in this application, the first component, first component, first region, first layer or first section mentioned in these examples may also be referred to as the second component, second component, second region, second layer or second section.

[0069] Spatially relative terms such as "above", "higher", "below", and "lower" may be used in this application for descriptive convenience to describe the relationship of one element relative to another element as shown in the accompanying drawings. In addition to covering the orientations depicted in the accompanying drawings, these spatially relative terms are intended to also cover different orientations of the device in use or operation. For example, if the device in the accompanying drawings is flipped, an element described as being "above" or "higher" relative to another element will be "below" or "lower" relative to the other element. Therefore, depending on the spatial orientation of the device, the term "above" covers both "above" and "below" orientations. The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used in this application should be interpreted accordingly.

[0070] The terms used in this application are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the words "a", "an" and "the" are intended to also include plural forms. The words "comprise", "include" and "have" indicate the presence of the features, numbers, operations, components, elements and / or their combinations, but do not exclude the presence or addition of one or more other features, numbers, operations, components, elements and / or their combinations.

[0071] In the drawings, the thickness, size, and shape of the lens may be exaggerated for the purpose of explanation. Specifically, the shapes of the spherical surfaces or aspherical surfaces shown in the drawings are presented only as examples and are not limited thereto.

[0072] The optical imaging system according to an embodiment of the present disclosure includes nine lenses.

[0073] The first lens refers to a lens closest to the object side of the optical imaging system, and the ninth lens refers to a lens closest to the imaging plane (or image sensor) of the optical imaging system.

[0074] In addition, in each lens, the first surface (or object-side surface) refers to a surface closest to the object side of the optical imaging system, and the second surface (or image-side surface) refers to a surface closest to the imaging plane of the optical imaging system.

[0075] Additionally, in one or more embodiments of the optical imaging system, the values ​​of the radius of curvature, thickness, distance, and focal length of the lens are expressed in mm, and the field of view (FOV) of the optical imaging system is expressed in degrees (°).

[0076] In addition, in describing the shape of each lens, the expression that the surface is convex means that the paraxial region of the corresponding surface is convex, and the expression that the surface is concave means that the paraxial region of the corresponding surface is concave.

[0077] Thus, even if one surface of a lens is described as having a convex shape, an edge portion of the surface may be concave. Likewise, even if one surface of a lens is described as having a concave shape, an edge portion of the surface may be convex.

[0078] The paraxial region of the lens surface is the central portion of the lens surface around the optical axis of the lens surface, where light incident on the lens surface forms a small angle θ with the optical axis and the approximations sinθ≈θ, tanθ≈θ, and cosθ≈1 are valid.

[0079] The imaging plane may refer to a virtual surface on which a focus is formed by an optical imaging system. Alternatively, the imaging plane may refer to one surface of an image sensor on which light is received by the optical imaging system.

[0080] An optical imaging system according to an embodiment of the present disclosure includes at least nine lenses.

[0081] For example, an optical imaging system according to an embodiment of the present disclosure includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens that are sequentially arranged along the optical axis of the optical imaging system from the object side of the optical imaging system toward the imaging surface of the optical imaging system. Adjacent lenses among the first lens to the ninth lens are spaced apart from each other by a predetermined distance along the optical axis.

[0082] An optical imaging system according to an embodiment of the present disclosure may further include an image sensor that converts an image of an incident object into an electrical signal.

[0083] In addition, the optical imaging system may further include an infrared blocking filter (hereinafter referred to as a filter) that blocks infrared light. The filter may be disposed between the ninth lens and the imaging surface.

[0084] In addition, the optical imaging system may further include a diaphragm that adjusts the amount of light reaching the imaging surface.

[0085] The first lens to the ninth lens forming the optical imaging system according to an embodiment of the present disclosure may be made of a plastic material.

[0086] In addition, at least one of the first lens to the ninth lens has an aspherical surface. For example, each of the first lens to the ninth lens may have at least one aspherical surface.

[0087] That is, any one or both of the first surface and the second surface of each of the first lens to the ninth lens may be an aspherical surface. The aspherical surfaces of the first lens to the ninth lens are represented by Equation 1 below.

[0088]

[0089] In Equation 1, c is the curvature of the lens and is equal to the reciprocal of the radius of curvature of the lens surface at the optical axis of the lens surface, K is the conic constant, and Y is the distance from any point on the aspherical surface of the lens to the optical axis. In addition, the constants A to H, J, and L to P are aspherical coefficients. Z (also referred to as sag) is the distance in the direction parallel to the optical axis between the point on the aspherical surface of the lens at the distance Y from the optical axis of the aspherical surface and the tangential plane perpendicular to the optical axis and intersecting the vertex of the aspherical surface.

[0090] An optical imaging system according to an embodiment of the present disclosure may satisfy any one or any combination of any two or more of the following conditional expressions.

[0091] 0 < f1 / f < 30 (Conditional Expression 1)

[0092] 0 < f2 / f < 3 (Conditional expression 2)

[0093] -3 < f3 / f < 0 (Conditional expression 3)

[0094] -1 < f4 / f / 100 < 0.5 (Conditional expression 4)

[0095] -0.5 < f5 / f / 100 < 1 (Conditional expression 5)

[0096] -2 < f6 / f / 100 < 1.5 (Conditional expression 6)

[0097] -0.5 < f7 / f / 15 (Conditional expression 7)

[0098] -1 < f8 / f / 100 < 0.5 (Conditional expression 8)

[0099] -3 < f9 / f < 0 (Conditional expression 9)

[0100] v1 - v3 < 45 (Conditional expression 10)

[0101] v1 - v5 < 45 (Conditional expression 11)

[0102] TTL / f < 1.5 (Conditional expression 12)

[0103] BFL / f < 0.5 (Conditional expression 13)

[0104] TTL / (2×IMG HT) < 0.7 (Conditional expression 14)

[0105] FOV×IMG HT / f > 60° (Conditional expression 15)

[0106] Fno ≤ 1.69 (Conditional expression 16)

[0107] SWA11 < 25° (Conditional expression 17)

[0108] SWA21 < 36° (Conditional expression 18)

[0109] Nv26 ≤ 3 (Conditional expression 19)

[0110] 35 < v3 + v5 < 45 (Conditional expression 20)

[0111] 4.5 < f1 / f2 < 21 (Conditional expression 21)

[0112] 0.4 < |f12 / f3| < 0.6 (Conditional expression 22)

[0113] 0.4<|f2 / f3|<0.7 (Conditional Expression 23)

[0114] 0.09<|f3 / f1|<0.32 (Conditional Expression 24)

[0115] In the conditional expression, 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, f7 is the focal length of the seventh lens, f8 is the focal length of the eighth lens, f9 is the focal length of the ninth lens, f12 is the combined focal length of the first lens and the second lens, and f is the total focal length of the optical imaging system.

[0116] v1 is the Abbe number of the first lens, v3 is the Abbe number of the third lens, and v5 is the Abbe number of the fifth lens.

[0117] Nv26 is the number of lenses having an Abbe number less than 26.

[0118] TTL is the distance from the object side surface of the first lens to the imaging plane along the optical axis, BFL is the distance from the image side surface of the ninth lens to the imaging plane along the optical axis, and IMG HT is half the diagonal length of the imaging plane.

[0119] FOV is the field of view angle of the optical imaging system, and Fno is the F number of the optical imaging system.

[0120] SWA11 is a sweep angle at the end of the effective diameter of the object-side surface of the first lens, and SWA21 is a sweep angle at the end of the effective diameter of the object-side surface of the second lens.

[0121] Reference Fig.31 , the sweep angle at a specific position of the object side surface of the lens can be defined as the angle between the tangent line TL1 at the vertex of the object side surface of the lens and the tangent line TL2 at the specific position, or the angle between the straight line TL1 perpendicular to the optical axis of the object side surface of the lens and the tangent line TL2 at the specific position. The vertex of the object side surface of the lens can be the point where the object side surface of the lens intersects the optical axis of the object side surface of the lens.

[0122] For example, the sweep angle SWA11 at the end of the effective diameter of the object side surface of the first lens may be defined as the angle between the tangent line at the vertex of the object side surface of the first lens and the tangent line at the end of the effective diameter of the object side surface of the first lens. The sweep angle SWA21 at the end of the effective diameter of the object side surface of the second lens may be defined as the angle between the tangent line at the vertex of the object side surface of the second lens and the tangent line at the end of the effective diameter of the object side surface of the second lens.

[0123] The first lens has positive refractive power. In addition, the first lens may have a meniscus shape that is convex toward the object side. In addition, the first surface of the first lens may be convex in the paraxial region, and the second surface of the first lens may be concave in the paraxial region.

[0124] The second lens has positive refractive power. In addition, the second lens may have a meniscus shape that is convex toward the object side. In addition, the first surface of the second lens may be convex in the paraxial region, and the second surface of the second lens may be concave in the paraxial region.

[0125] The third lens has negative refractive power. In addition, the third lens may have a meniscus shape that is convex toward the object side. In addition, the first surface of the third lens may be convex in the paraxial region, and the second surface of the third lens may be concave in the paraxial region.

[0126] The fourth lens has negative refractive power or positive refractive power. In addition, the fourth lens may have a meniscus shape that is convex toward the object side. In addition, the first surface of the fourth lens may be convex in the paraxial region, and the second surface of the fourth lens may be concave in the paraxial region.

[0127] The fifth lens has negative refractive power or positive refractive power. In addition, the fifth lens may have a meniscus shape that is convex toward the object side. In addition, the first surface of the fifth lens may be convex in the paraxial region, and the second surface of the fifth lens may be concave in the paraxial region.

[0128] The sixth lens has negative refractive power or positive refractive power. In addition, the sixth lens may have a meniscus shape convex toward the object side. In addition, the first surface of the sixth lens may be convex in the paraxial region, and the second surface of the sixth lens may be concave in the paraxial region.

[0129] The seventh lens has negative refractive power or positive refractive power. In addition, the seventh lens may have a meniscus shape convex toward the image side. In addition, the first surface of the seventh lens may be concave in the paraxial region, and the second surface of the seventh lens may be convex in the paraxial region. Alternatively, the seventh lens may have a shape in which both surfaces are convex. In addition, the first surface and the second surface of the seventh lens may be convex in the paraxial region.

[0130] The eighth lens has negative refractive power or positive refractive power. In addition, the eighth lens may have a meniscus shape convex toward the object side. In addition, the first surface of the eighth lens may be convex in the paraxial region, and the second surface of the eighth lens may be concave in the paraxial region. Alternatively, the eighth lens may have a meniscus shape convex toward the image side. In addition, the first surface of the eighth lens may be concave in the paraxial region, and the second surface of the eighth lens may be convex in the paraxial region.

[0131] The ninth lens has negative refractive power. In addition, the ninth lens may have a meniscus shape that is convex toward the object side. In addition, the first surface of the ninth lens may be convex in the paraxial region, and the second surface of the ninth lens may be concave in the paraxial region.

[0132] In addition, at least one of the fifth to ninth lenses may have at least one inflection point formed on any one or both of the first surface and the second surface. For example, the first surface of the fifth lens may be convex in the paraxial region, and may be concave in the peripheral region outside the paraxial region. The second surface of the fifth lens may be concave in the paraxial region, and may be convex in the peripheral region outside the paraxial region.

[0133] Each of the first lens and the second lens may have an Abbe number greater than 54 and less than 57. In addition, the third lens may have an Abbe number greater than 18 and less than 24.

[0134] The Abbe number of the fourth lens may be greater than the Abbe number of the third lens. In addition, the sum of the Abbe number of the third lens and the Abbe number of the fifth lens may be less than the Abbe number of the fourth lens.

[0135] The fifth lens may have a refractive index greater than 1.64 and an Abbe number less than 21.

[0136] Two of the fifth to seventh lenses may have a refractive index greater than 1.61 and an Abbe number less than 26.

[0137] The Abbe number of the seventh lens may be smaller than the Abbe number of the eighth lens and smaller than the Abbe number of the ninth lens.

[0138] The focal length of the second lens may be smaller than an absolute value of the focal length of the third lens, and the absolute value of the focal length of the third lens may be smaller than the focal length of the first lens.

[0139] The optical imaging system according to an embodiment of the present disclosure may be configured to have a field of view greater than 80°. In an embodiment, the field of view of the optical imaging system may be less than 85°.

[0140] Figure 1is a structural diagram of an optical imaging system according to a first embodiment of the present disclosure, and Figure 2 It is shown Figure 1 Graph of the aberration characteristics of the optical imaging system shown in .

[0141] Reference Figure 1 According to the first embodiment of the present disclosure, the optical imaging system 100 includes a first lens 101, a second lens 102, a third lens 103, a fourth lens 104, a fifth lens 105, a sixth lens 106, a seventh lens 107, an eighth lens 108 and a ninth lens 109, and may also include a filter 110 and an image sensor IS.

[0142] The optical imaging system 100 according to the first embodiment of the present disclosure may form a focus on an imaging plane 111. The imaging plane 111 may represent a surface on which a focus is formed by the optical imaging system. In an example, the imaging plane 111 may represent one surface of the image sensor IS on which light is received.

[0143] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number, and focal length) of each lens are shown in Table 1 below.

[0144] Table 1

[0145]

[0146]

[0147] The total focal length f of the optical imaging system 100 according to the first embodiment of the present disclosure is 6.8357 mm, Fno is 1.59, IMG HT is 6 mm, FOV is 80.8°, SWA11 is 19.045°, SWA21 is 33.395°, and f12 is 5.671 mm.

[0148] In the first embodiment of the present disclosure, the first lens 101 has positive refractive power, a first surface of the first lens 101 is convex in the paraxial region, and a second surface of the first lens 101 is concave in the paraxial region.

[0149] The second lens 102 has positive refractive power, a first surface of the second lens 102 is convex in the paraxial region, and a second surface of the second lens 102 is concave in the paraxial region.

[0150] The third lens 103 has negative refractive power, a first surface of the third lens 103 is convex in the paraxial region, and a second surface of the third lens 103 is concave in the paraxial region.

[0151] The fourth lens 104 has positive refractive power, a first surface of the fourth lens 104 is convex in the paraxial region, and a second surface of the fourth lens 104 is concave in the paraxial region.

[0152] The fifth lens 105 has negative refractive power, a first surface of the fifth lens 105 is convex in the paraxial region, and a second surface of the fifth lens 105 is concave in the paraxial region.

[0153] The sixth lens 106 has negative refractive power, a first surface of the sixth lens 106 is convex in the paraxial region, and a second surface of the sixth lens 106 is concave in the paraxial region.

[0154] The seventh lens 107 has negative refractive power, a first surface of the seventh lens 107 is concave in the paraxial region, and a second surface of the seventh lens 107 is convex in the paraxial region.

[0155] The eighth lens 108 has positive refractive power, a first surface of the eighth lens 108 is convex in the paraxial region, and a second surface of the eighth lens 108 is concave in the paraxial region.

[0156] The ninth lens 109 has negative refractive power, a first surface of the ninth lens 109 is convex in the paraxial region, and a second surface of the ninth lens 109 is concave in the paraxial region.

[0157] In addition, one or more of the fifth to ninth lenses 105 to 109 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0158] Each surface of the first to ninth lenses 101 to 109 has an aspherical coefficient as shown in the following Table 2. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 101 to 109 are aspherical surfaces.

[0159] Table 2

[0160]

[0161]

[0162] In addition, the optical imaging system 100 configured as described above may have Figure 2 Aberration characteristics shown in .

[0163] Figure 3 is a structural diagram of an optical imaging system according to a second embodiment of the present disclosure, and Figure 4 It is shown Figure 3 Graph of the aberration characteristics of the optical imaging system shown in .

[0164] Reference Figure 3 According to the second embodiment of the present disclosure, the optical imaging system 200 includes a first lens 201, a second lens 202, a third lens 203, a fourth lens 204, a fifth lens 205, a sixth lens 206, a seventh lens 207, an eighth lens 208 and a ninth lens 209, and may also include a filter 210 and an image sensor IS.

[0165] The optical imaging system 200 according to the second embodiment of the present disclosure may form a focus on an imaging plane 211. The imaging plane 211 may represent a surface on which a focus is formed by the optical imaging system. In an example, the imaging plane 211 may represent a surface of the image sensor IS on which light is received.

[0166] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number, and focal length) of each lens are shown in Table 3 below.

[0167] Table 3

[0168]

[0169]

[0170] The total focal length f of the optical imaging system 200 according to the second embodiment of the present disclosure is 6.8353 mm, Fno is 1.59, IMG HT is 6 mm, FOV is 80.5°, SWA11 is 19.011°, SWA21 is 32.83°, and f12 is 5.684 mm.

[0171] In the second embodiment of the present disclosure, the first lens 201 has positive refractive power, a first surface of the first lens 201 is convex in the paraxial region, and a second surface of the first lens 201 is concave in the paraxial region.

[0172] The second lens 202 has positive refractive power, a first surface of the second lens 202 is convex in the paraxial region, and a second surface of the second lens 202 is concave in the paraxial region.

[0173] The third lens 203 has negative refractive power, a first surface of the third lens 203 is convex in the paraxial region, and a second surface of the third lens 203 is concave in the paraxial region.

[0174] The fourth lens 204 has positive refractive power, a first surface of the fourth lens 204 is convex in the paraxial region, and a second surface of the fourth lens 204 is concave in the paraxial region.

[0175] The fifth lens 205 has negative refractive power, a first surface of the fifth lens 205 is convex in the paraxial region, and a second surface of the fifth lens 205 is concave in the paraxial region.

[0176] The sixth lens 206 has negative refractive power, a first surface of the sixth lens 206 is convex in the paraxial region, and a second surface of the sixth lens 206 is concave in the paraxial region.

[0177] The seventh lens 207 has positive refractive power, a first surface of the seventh lens 207 is concave in the paraxial region, and a second surface of the seventh lens 207 is convex in the paraxial region.

[0178] The eighth lens 208 has positive refractive power, a first surface of the eighth lens 208 is convex in the paraxial region, and a second surface of the eighth lens 208 is concave in the paraxial region.

[0179] The ninth lens 209 has negative refractive power, a first surface of the ninth lens 209 is convex in the paraxial region, and a second surface of the ninth lens 209 is concave in the paraxial region.

[0180] In addition, one or more of the fifth to ninth lenses 205 to 209 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0181] Each surface of the first to ninth lenses 201 to 209 has an aspherical coefficient as shown in the following Table 4. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 201 to 209 are aspherical surfaces.

[0182] Table 4

[0183]

[0184]

[0185] In addition, the optical imaging system 200 configured as described above may have Figure 4 Aberration characteristics shown in .

[0186] Figure 5 is a structural diagram of an optical imaging system according to a third embodiment of the present disclosure, and Figure 6 It is shown Figure 5 Graph of the aberration characteristics of the optical imaging system shown in .

[0187] Reference Figure 5According to the third embodiment of the present disclosure, the optical imaging system 300 includes a first lens 301, a second lens 302, a third lens 303, a fourth lens 304, a fifth lens 305, a sixth lens 306, a seventh lens 307, an eighth lens 308 and a ninth lens 309, and may also include a filter 310 and an image sensor IS.

[0188] The optical imaging system 300 according to the third embodiment of the present disclosure may form a focus on an imaging plane 311. The imaging plane 311 may represent a surface on which a focus is formed by the optical imaging system. In an example, the imaging plane 311 may mean one surface of the image sensor IS on which light is received.

[0189] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number, and focal length) of each lens are shown in Table 5 below.

[0190] Table 5

[0191]

[0192] The total focal length f of the optical imaging system 300 according to the third embodiment of the present disclosure is 6.8389 mm, Fno is 1.59, IMG HT is 6 mm, FOV is 80.5°, SWA11 is 19.065°, SWA21 is 33.45°, and f12 is 5.688 mm.

[0193] In the third embodiment of the present disclosure, the first lens 301 has positive refractive power, a first surface of the first lens 301 is convex in the paraxial region, and a second surface of the first lens 301 is concave in the paraxial region.

[0194] The second lens 302 has positive refractive power, a first surface of the second lens 302 is convex in the paraxial region, and a second surface of the second lens 302 is concave in the paraxial region.

[0195] The third lens 303 has negative refractive power, a first surface of the third lens 303 is convex in the paraxial region, and a second surface of the third lens 303 is concave in the paraxial region.

[0196] The fourth lens 304 has positive refractive power, a first surface of the fourth lens 304 is convex in the paraxial region, and a second surface of the fourth lens 304 is concave in the paraxial region.

[0197] The fifth lens 305 has negative refractive power, a first surface of the fifth lens 305 is convex in the paraxial region, and a second surface of the fifth lens 305 is concave in the paraxial region.

[0198] The sixth lens 306 has positive refractive power, a first surface of the sixth lens 306 is convex in the paraxial region, and a second surface of the sixth lens 306 is concave in the paraxial region.

[0199] The seventh lens 307 has negative refractive power, a first surface of the seventh lens 307 is concave in the paraxial region, and a second surface of the seventh lens 307 is convex in the paraxial region.

[0200] The eighth lens 308 has positive refractive power, a first surface of the eighth lens 308 is convex in the paraxial region, and a second surface of the eighth lens 308 is concave in the paraxial region.

[0201] The ninth lens 309 has negative refractive power, a first surface of the ninth lens 309 is convex in the paraxial region, and a second surface of the ninth lens 309 is concave in the paraxial region.

[0202] In addition, one or more of the fifth to ninth lenses 305 to 309 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0203] Each surface of the first to ninth lenses 301 to 309 has an aspherical coefficient as shown in the following Table 6. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 301 to 309 are aspherical surfaces.

[0204] Table 6

[0205]

[0206]

[0207] In addition, the optical imaging system 300 configured as described above may have Figure 6 Aberration characteristics shown in .

[0208] Figure 7 is a structural diagram of an optical imaging system according to a fourth embodiment of the present disclosure, and Figure 8 It is shown Figure 7 Graph of the aberration characteristics of the optical imaging system shown in .

[0209] Reference Figure 7 According to the fourth embodiment of the present disclosure, the optical imaging system 400 includes a first lens 401, a second lens 402, a third lens 403, a fourth lens 404, a fifth lens 405, a sixth lens 406, a seventh lens 407, an eighth lens 408 and a ninth lens 409, and may also include a filter 410 and an image sensor IS.

[0210] The optical imaging system 400 according to the fourth embodiment of the present disclosure may form a focus on an imaging surface 411. The imaging surface 411 may refer to a surface on which a focus is formed by the optical imaging system. In an example, the imaging surface 411 may refer to a surface of the image sensor IS on which light is received.

[0211] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number, and focal length) of each lens are shown in Table 7 below.

[0212] Table 7

[0213]

[0214] The total focal length f of the optical imaging system 400 according to the fourth embodiment of the present disclosure is 6.8354 mm, Fno is 1.59, IMG HT is 6 mm, FOV is 80.5°, SWA11 is 19.074°, SWA21 is 32.851°, and f12 is 5.719 mm.

[0215] In the fourth embodiment of the present disclosure, the first lens 401 has positive refractive power, a first surface of the first lens 401 is convex in the paraxial region, and a second surface of the first lens 401 is concave in the paraxial region.

[0216] The second lens 402 has positive refractive power, a first surface of the second lens 402 is convex in the paraxial region, and a second surface of the second lens 402 is concave in the paraxial region.

[0217] The third lens 403 has negative refractive power, a first surface of the third lens 403 is convex in the paraxial region, and a second surface of the third lens 403 is concave in the paraxial region.

[0218] The fourth lens 404 has positive refractive power, a first surface of the fourth lens 404 is convex in the paraxial region, and a second surface of the fourth lens 404 is concave in the paraxial region.

[0219] The fifth lens 405 has negative refractive power, a first surface of the fifth lens 405 is convex in the paraxial region, and a second surface of the fifth lens 405 is concave in the paraxial region.

[0220] The sixth lens 406 has positive refractive power, a first surface of the sixth lens 406 is convex in the paraxial region, and a second surface of the sixth lens 406 is concave in the paraxial region.

[0221] The seventh lens 407 has positive refractive power, a first surface of the seventh lens 407 is concave in the paraxial region, and a second surface of the seventh lens 407 is convex in the paraxial region.

[0222] The eighth lens 408 has positive refractive power, a first surface of the eighth lens 408 is convex in the paraxial region, and a second surface of the eighth lens 408 is concave in the paraxial region.

[0223] The ninth lens 409 has negative refractive power, a first surface of the ninth lens 409 is convex in the paraxial region, and a second surface of the ninth lens 409 is concave in the paraxial region.

[0224] In addition, one or more of the fifth to ninth lenses 405 to 409 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0225] Each surface of the first to ninth lenses 401 to 409 has an aspherical coefficient as shown in the following Table 8. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 401 to 409 are aspherical surfaces.

[0226] Table 8

[0227]

[0228]

[0229]

[0230] In addition, the optical imaging system 400 configured as described above may have Figure 8 Aberration characteristics shown in .

[0231] Fig. 9 is a structural diagram of an optical imaging system according to a fifth embodiment of the present disclosure, and Fig.10 It is shown Fig. 9 Graph of the aberration characteristics of the optical imaging system shown in .

[0232] Reference Fig. 9 According to the fifth embodiment of the present disclosure, the optical imaging system 500 includes a first lens 501, a second lens 502, a third lens 503, a fourth lens 504, a fifth lens 505, a sixth lens 506, a seventh lens 507, an eighth lens 508 and a ninth lens 509, and may also include a filter 510 and an image sensor IS.

[0233] The optical imaging system 500 according to the fifth embodiment of the present disclosure may form a focus on an imaging plane 511. The imaging plane 511 may represent a surface on which a focus is formed by the optical imaging system. In an example, the imaging plane 511 may represent a surface of the image sensor IS on which light is received.

[0234] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number, and focal length) of each lens are shown in Table 9 below.

[0235] Table 9

[0236]

[0237]

[0238] The optical imaging system 500 according to the fifth embodiment of the present disclosure has a total focal length f of 6.84 mm, Fno of 1.59, IMG HT of 6 mm, FOV of 80.5°, SWA11 of 19.09°, SWA21 of 33.324°, and f12 of 5.580 mm.

[0239] In the fifth embodiment of the present disclosure, the first lens 501 has positive refractive power, a first surface of the first lens 501 is convex in the paraxial region, and a second surface of the first lens 501 is concave in the paraxial region.

[0240] The second lens 502 has positive refractive power, a first surface of the second lens 502 is convex in the paraxial region, and a second surface of the second lens 502 is concave in the paraxial region.

[0241] The third lens 503 has negative refractive power, a first surface of the third lens 503 is convex in the paraxial region, and a second surface of the third lens 503 is concave in the paraxial region.

[0242] The fourth lens 504 has positive refractive power, a first surface of the fourth lens 504 is convex in the paraxial region, and a second surface of the fourth lens 504 is concave in the paraxial region.

[0243] The fifth lens 505 has positive refractive power, a first surface of the fifth lens 505 is convex in the paraxial region, and a second surface of the fifth lens 505 is concave in the paraxial region.

[0244] The sixth lens 506 has negative refractive power, a first surface of the sixth lens 506 is convex in the paraxial region, and a second surface of the sixth lens 506 is concave in the paraxial region.

[0245] The seventh lens 507 has negative refractive power, a first surface of the seventh lens 507 is concave in the paraxial region, and a second surface of the seventh lens 507 is convex in the paraxial region.

[0246] The eighth lens 508 has positive refractive power, a first surface of the eighth lens 508 is convex in the paraxial region, and a second surface of the eighth lens 508 is concave in the paraxial region.

[0247] The ninth lens 509 has negative refractive power, a first surface of the ninth lens 509 is convex in the paraxial region, and a second surface of the ninth lens 509 is concave in the paraxial region.

[0248] In addition, one or more of the fifth to ninth lenses 505 to 509 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0249] Each surface of the first to ninth lenses 501 to 509 has an aspherical coefficient as shown in the following Table 10. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 501 to 509 are aspherical surfaces.

[0250] Table 10

[0251]

[0252]

[0253] In addition, the optical imaging system 500 configured as described above may have Fig.10 Aberration characteristics shown in .

[0254] Fig.11 is a structural diagram of an optical imaging system according to a sixth embodiment of the present disclosure, and Fig.12 It is shown Fig.11 Graph of the aberration characteristics of the optical imaging system shown in .

[0255] Reference Fig.11 According to the sixth embodiment of the present disclosure, the optical imaging system 600 includes a first lens 601, a second lens 602, a third lens 603, a fourth lens 604, a fifth lens 605, a sixth lens 606, a seventh lens 607, an eighth lens 608 and a ninth lens 609, and may also include a filter 610 and an image sensor IS.

[0256] The optical imaging system 600 according to the sixth embodiment of the present disclosure may form a focus on an imaging surface 611. The imaging surface 611 may represent a surface on which a focus is formed by the optical imaging system. In an example, the imaging surface 611 may represent a surface of the image sensor IS on which light is received.

[0257] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number, and focal length) of each lens are shown in Table 11 below.

[0258] Table 11

[0259]

[0260]

[0261] The total focal length f of the optical imaging system 600 according to the sixth embodiment of the present disclosure is 6.84 mm, Fno is 1.59, IMG HT is 6 mm, FOV is 80.5°, SWA11 is 19.159°, SWA21 is 33.721°, and f12 is 5.563 mm.

[0262] In the sixth embodiment of the present disclosure, the first lens 601 has positive refractive power, a first surface of the first lens 601 is convex in the paraxial region, and a second surface of the first lens 601 is concave in the paraxial region.

[0263] The second lens 602 has positive refractive power, a first surface of the second lens 602 is convex in the paraxial region, and a second surface of the second lens 602 is concave in the paraxial region.

[0264] The third lens 603 has negative refractive power, a first surface of the third lens 603 is convex in the paraxial region, and a second surface of the third lens 603 is concave in the paraxial region.

[0265] The fourth lens 604 has positive refractive power, a first surface of the fourth lens 604 is convex in the paraxial region, and a second surface of the fourth lens 604 is concave in the paraxial region.

[0266] The fifth lens 605 has positive refractive power, a first surface of the fifth lens 605 is convex in the paraxial region, and a second surface of the fifth lens 605 is concave in the paraxial region.

[0267] The sixth lens 606 has negative refractive power, a first surface of the sixth lens 606 is convex in the paraxial region, and a second surface of the sixth lens 606 is concave in the paraxial region.

[0268] The seventh lens 607 has positive refractive power, a first surface of the seventh lens 607 is concave in the paraxial region, and a second surface of the seventh lens 607 is convex in the paraxial region.

[0269] The eighth lens 608 has positive refractive power, a first surface of the eighth lens 608 is convex in the paraxial region, and a second surface of the eighth lens 608 is concave in the paraxial region.

[0270] The ninth lens 609 has negative refractive power, a first surface of the ninth lens 609 is convex in the paraxial region, and a second surface of the ninth lens 609 is concave in the paraxial region.

[0271] In addition, one or more of the fifth to ninth lenses 605 to 609 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0272] Each surface of the first to ninth lenses 601 to 609 has an aspherical coefficient as shown in the following Table 12. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 601 to 609 are aspherical surfaces.

[0273] Table 12

[0274]

[0275]

[0276] In addition, the optical imaging system 600 configured as described above may have Fig.12 Aberration characteristics shown in .

[0277] Fig.13 is a structural diagram of an optical imaging system according to a seventh embodiment of the present disclosure, and Fig.14 It is shown Fig.13 Graph of the aberration characteristics of the optical imaging system shown in .

[0278] Reference Fig.13 According to the seventh embodiment of the present disclosure, the optical imaging system 700 includes a first lens 701, a second lens 702, a third lens 703, a fourth lens 704, a fifth lens 705, a sixth lens 706, a seventh lens 707, an eighth lens 708 and a ninth lens 709, and may also include a filter 710 and an image sensor IS.

[0279] The optical imaging system 700 according to the seventh embodiment of the present disclosure may form a focus on an imaging surface 711. The imaging surface 711 may represent a surface on which a focus is formed by the optical imaging system. In an example, the imaging surface 711 may represent a surface of the image sensor IS on which light is received.

[0280] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number, and focal length) of each lens are shown in Table 13 below.

[0281] Table 13

[0282]

[0283] The total focal length f of the optical imaging system 700 according to the seventh embodiment of the present disclosure is 6.8372 mm, Fno is 1.59, IMG HT is 6 mm, FOV is 80.5°, SWA11 is 19.23°, SWA21 is 33.346°, and f12 is 5.644 mm.

[0284] In the seventh embodiment of the present disclosure, the first lens 701 has positive refractive power, a first surface of the first lens 701 is convex in the paraxial region, and a second surface of the first lens 701 is concave in the paraxial region.

[0285] The second lens 702 has positive refractive power, a first surface of the second lens 702 is convex in the paraxial region, and a second surface of the second lens 702 is concave in the paraxial region.

[0286] The third lens 703 has negative refractive power, a first surface of the third lens 703 is convex in the paraxial region, and a second surface of the third lens 703 is concave in the paraxial region.

[0287] The fourth lens 704 has negative refractive power, a first surface of the fourth lens 704 is convex in the paraxial region, and a second surface of the fourth lens 704 is concave in the paraxial region.

[0288] The fifth lens 705 has positive refractive power, a first surface of the fifth lens 705 is convex in the paraxial region, and a second surface of the fifth lens 705 is concave in the paraxial region.

[0289] The sixth lens 706 has negative refractive power, a first surface of the sixth lens 706 is convex in the paraxial region, and a second surface of the sixth lens 706 is concave in the paraxial region.

[0290] The seventh lens 707 has negative refractive power, a first surface of the seventh lens 707 is concave in the paraxial region, and a second surface of the seventh lens 707 is convex in the paraxial region.

[0291] The eighth lens 708 has positive refractive power, a first surface of the eighth lens 708 is convex in the paraxial region, and a second surface of the eighth lens 708 is concave in the paraxial region.

[0292] The ninth lens 709 has negative refractive power, a first surface of the ninth lens 709 is convex in the paraxial region, and a second surface of the ninth lens 709 is concave in the paraxial region.

[0293] In addition, one or more of the fifth to ninth lenses 705 to 709 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0294] Each surface of the first to ninth lenses 701 to 709 has an aspherical coefficient as shown in the following Table 14. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 701 to 709 are aspherical surfaces.

[0295] Table 14

[0296]

[0297]

[0298] In addition, the optical imaging system 700 configured as described above may have Fig.14 Aberration characteristics shown in .

[0299] Fig.15 is a structural diagram of an optical imaging system according to an eighth embodiment of the present disclosure, and Fig.16 It is shown Fig.15 Graph of the aberration characteristics of the optical imaging system shown in .

[0300] Reference Fig.15 According to the eighth embodiment of the present disclosure, the optical imaging system 800 includes a first lens 801, a second lens 802, a third lens 803, a fourth lens 804, a fifth lens 805, a sixth lens 806, a seventh lens 807, an eighth lens 808 and a ninth lens 809, and may also include a filter 810 and an image sensor IS.

[0301] The optical imaging system 800 according to the eighth embodiment of the present disclosure may form a focus on an imaging surface 811. The imaging surface 811 may represent a surface on which a focus is formed by the optical imaging system. In an example, the imaging surface 811 may represent a surface of the image sensor IS on which light is received.

[0302] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number and focal length) of each lens are shown in Table 15 below.

[0303] Table 15

[0304]

[0305] The total focal length f of the optical imaging system 800 according to the eighth embodiment of the present disclosure is 6.8321 mm, Fno is 1.59, IMG HT is 6 mm, FOV is 80.5°, SWA11 is 17.312°, SWA21 is 35.581°, and f12 is 6.343 mm.

[0306] In the eighth embodiment of the present disclosure, the first lens 801 has positive refractive power, a first surface of the first lens 801 is convex in the paraxial region, and a second surface of the first lens 801 is concave in the paraxial region.

[0307] The second lens 802 has positive refractive power, a first surface of the second lens 802 is convex in the paraxial region, and a second surface of the second lens 802 is concave in the paraxial region.

[0308] The third lens 803 has negative refractive power, a first surface of the third lens 803 is convex in the paraxial region, and a second surface of the third lens 803 is concave in the paraxial region.

[0309] The fourth lens 804 has positive refractive power, a first surface of the fourth lens 804 is convex in the paraxial region, and a second surface of the fourth lens 804 is concave in the paraxial region.

[0310] The fifth lens 805 has negative refractive power, a first surface of the fifth lens 805 is convex in the paraxial region, and a second surface of the fifth lens 805 is concave in the paraxial region.

[0311] The sixth lens 806 has positive refractive power, a first surface of the sixth lens 806 is convex in the paraxial region, and a second surface of the sixth lens 806 is concave in the paraxial region.

[0312] The seventh lens 807 has positive refractive power, and a first surface and a second surface of the seventh lens 807 are convex in a paraxial region.

[0313] The eighth lens 808 has negative refractive power, a first surface of the eighth lens 808 is concave in the paraxial region, and a second surface of the eighth lens 808 is convex in the paraxial region.

[0314] The ninth lens 809 has negative refractive power, a first surface of the ninth lens 809 is convex in the paraxial region, and a second surface of the ninth lens 809 is concave in the paraxial region.

[0315] In addition, one or more of the fifth to ninth lenses 805 to 809 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0316] Each surface of the first to ninth lenses 801 to 809 has an aspherical coefficient as shown in the following Table 16. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 801 to 809 are aspherical surfaces.

[0317] Table 16

[0318]

[0319]

[0320]

[0321] In addition, the optical imaging system 800 configured as described above may have Fig.16 Aberration characteristics shown in .

[0322] Fig.17 is a structural diagram of an optical imaging system according to a ninth embodiment of the present disclosure, and Fig.18 It is shown Fig.17 Graph of the aberration characteristics of the optical imaging system shown in .

[0323] Reference Fig.17 According to the ninth embodiment of the present disclosure, the optical imaging system 900 includes a first lens 901, a second lens 902, a third lens 903, a fourth lens 904, a fifth lens 905, a sixth lens 906, a seventh lens 907, an eighth lens 908 and a ninth lens 909, and may also include a filter 910 and an image sensor IS.

[0324] The optical imaging system 900 according to the ninth embodiment of the present disclosure may form a focus on an imaging surface 911. The imaging surface 911 may represent a surface on which a focus is formed by the optical imaging system. In an example, the imaging surface 911 may represent a surface of the image sensor IS on which light is received.

[0325] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number and focal length) of each lens are shown in Table 17 below.

[0326] Table 17

[0327]

[0328]

[0329] The total focal length f of the optical imaging system 900 according to the ninth embodiment of the present disclosure is 6.8322 mm, Fno is 1.59, IMG HT is 6 mm, FOV is 80.5°, SWA11 is 17.443°, SWA21 is 35.742°, and f12 is 6.340 mm.

[0330] In the ninth embodiment of the present disclosure, the first lens 901 has positive refractive power, the first surface of the first lens 901 is convex in the paraxial region, and the second surface of the first lens 901 is concave in the paraxial region.

[0331] The second lens 902 has positive refractive power, a first surface of the second lens 902 is convex in the paraxial region, and a second surface of the second lens 902 is concave in the paraxial region.

[0332] The third lens 903 has negative refractive power, a first surface of the third lens 903 is convex in the paraxial region, and a second surface of the third lens 903 is concave in the paraxial region.

[0333] The fourth lens 904 has positive refractive power, a first surface of the fourth lens 904 is convex in the paraxial region, and a second surface of the fourth lens 904 is concave in the paraxial region.

[0334] The fifth lens 905 has negative refractive power, a first surface of the fifth lens 905 is convex in the paraxial region, and a second surface of the fifth lens 905 is concave in the paraxial region.

[0335] The sixth lens 906 has negative refractive power, a first surface of the sixth lens 906 is convex in the paraxial region, and a second surface of the sixth lens 906 is concave in the paraxial region.

[0336] The seventh lens 907 has positive refractive power, and a first surface and a second surface of the seventh lens 907 are convex in a paraxial region.

[0337] The eighth lens 908 has negative refractive power, a first surface of the eighth lens 908 is concave in the paraxial region, and a second surface of the eighth lens 908 is convex in the paraxial region.

[0338] The ninth lens 909 has negative refractive power, a first surface of the ninth lens 909 is convex in the paraxial region, and a second surface of the ninth lens 909 is concave in the paraxial region.

[0339] In addition, one or more of the fifth to ninth lenses 905 to 909 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0340] Each surface of the first to ninth lenses 901 to 909 has an aspherical coefficient as shown in the following Table 18. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 901 to 909 are aspherical surfaces.

[0341] Table 18

[0342]

[0343]

[0344] In addition, the optical imaging system 900 configured as described above may have Fig.18 Aberration characteristics shown in .

[0345] Fig.19 is a structural diagram of an optical imaging system according to a tenth embodiment of the present disclosure, and Fig. 20 It is shown Fig.19 Graph of the aberration characteristics of the optical imaging system shown in .

[0346] Reference Fig.19 According to the tenth embodiment of the present disclosure, the optical imaging system 1000 includes a first lens 1001, a second lens 1002, a third lens 1003, a fourth lens 1004, a fifth lens 1005, a sixth lens 1006, a seventh lens 1007, an eighth lens 1008 and a ninth lens 1009, and may also include a filter 1010 and an image sensor IS.

[0347] The optical imaging system 1000 according to the tenth embodiment of the present disclosure may form a focus on an imaging plane 1011. The imaging plane 1011 may represent a surface on which a focus is formed by the optical imaging system. In an example, the imaging plane 1011 may represent one surface of the image sensor IS on which light is received.

[0348] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number and focal length) of each lens are shown in Table 19 below.

[0349] Table 19

[0350]

[0351]

[0352] The total focal length f of the optical imaging system 1000 according to the tenth embodiment of the present disclosure is 6.83 mm, Fno is 1.59, IMG HT is 6 mm, FOV is 80.5°, SWA11 is 18.547°, SWA21 is 35.989°, and f12 is 6.273 mm.

[0353] In the tenth embodiment of the present disclosure, the first lens 1001 has positive refractive power, a first surface of the first lens 1001 is convex in the paraxial region, and a second surface of the first lens 1001 is concave in the paraxial region.

[0354] The second lens 1002 has positive refractive power, a first surface of the second lens 1002 is convex in the paraxial region, and a second surface of the second lens 1002 is concave in the paraxial region.

[0355] The third lens 1003 has negative refractive power, a first surface of the third lens 1003 is convex in the paraxial region, and a second surface of the third lens 1003 is concave in the paraxial region.

[0356] The fourth lens 1004 has positive refractive power, a first surface of the fourth lens 1004 is convex in the paraxial region, and a second surface of the fourth lens 1004 is concave in the paraxial region.

[0357] The fifth lens 1005 has positive refractive power, a first surface of the fifth lens 1005 is convex in the paraxial region, and a second surface of the fifth lens 1005 is concave in the paraxial region.

[0358] The sixth lens 1006 has negative refractive power, a first surface of the sixth lens 1006 is convex in the paraxial region, and a second surface of the sixth lens 1006 is concave in the paraxial region.

[0359] The seventh lens 1007 has positive refractive power, and the first and second surfaces of the seventh lens 1007 are convex in the paraxial region.

[0360] The eighth lens 1008 has negative refractive power, a first surface of the eighth lens 1008 is concave in the paraxial region, and a second surface of the eighth lens 1008 is convex in the paraxial region.

[0361] The ninth lens 1009 has negative refractive power, a first surface of the ninth lens 1009 is convex in the paraxial region, and a second surface of the ninth lens 1009 is concave in the paraxial region.

[0362] In addition, one or more of the fifth to ninth lenses 1005 to 1009 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0363] Each surface of the first to ninth lenses 1001 to 1009 has an aspherical coefficient as shown in the following Table 20. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 1001 to 1009 are aspherical surfaces.

[0364] Table 20

[0365]

[0366]

[0367] In addition, the optical imaging system 1000 configured as described above may have Fig. 20 Aberration characteristics shown in .

[0368] Fig.21 is a structural diagram of an optical imaging system according to an eleventh embodiment of the present disclosure, and Fig. 22 It is shown Fig.21 Graph of the aberration characteristics of the optical imaging system shown in .

[0369] Reference Fig.21 According to the eleventh embodiment of the present disclosure, the optical imaging system 1100 includes a first lens 1101, a second lens 1102, a third lens 1103, a fourth lens 1104, a fifth lens 1105, a sixth lens 1106, a seventh lens 1107, an eighth lens 1108 and a ninth lens 1109, and may also include a filter 1110 and an image sensor IS.

[0370] The optical imaging system 1100 according to the eleventh embodiment of the present disclosure may form a focus on an imaging surface 1111. The imaging surface 1111 may refer to a surface on which a focus is formed by the optical imaging system. In an example, the imaging surface 1111 may refer to one surface of the image sensor IS on which light is received.

[0371] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number and focal length) of each lens are shown in Table 21 below.

[0372] Table 21

[0373]

[0374] The total focal length f of the optical imaging system 1100 according to the eleventh embodiment of the present disclosure is 6.84 mm, Fno is 1.59, IMG HT is 6 mm, FOV is 80.5°, SWA11 is 19.264°, SWA21 is 33.366°, and f12 is 5.659 mm.

[0375] In the eleventh embodiment of the present disclosure, the first lens 1101 has positive refractive power, a first surface of the first lens 1101 is convex in the paraxial region, and a second surface of the first lens 1101 is concave in the paraxial region.

[0376] The second lens 1102 has positive refractive power, a first surface of the second lens 1102 is convex in the paraxial region, and a second surface of the second lens 1102 is concave in the paraxial region.

[0377] The third lens 1103 has negative refractive power, a first surface of the third lens 1103 is convex in the paraxial region, and a second surface of the third lens 1103 is concave in the paraxial region.

[0378] The fourth lens 1104 has negative refractive power, a first surface of the fourth lens 1104 is convex in the paraxial region, and a second surface of the fourth lens 1104 is concave in the paraxial region.

[0379] The fifth lens 1105 has positive refractive power, a first surface of the fifth lens 1105 is convex in the paraxial region, and a second surface of the fifth lens 1105 is concave in the paraxial region.

[0380] The sixth lens 1106 has positive refractive power, a first surface of the sixth lens 1106 is convex in the paraxial region, and a second surface of the sixth lens 1106 is concave in the paraxial region.

[0381] The seventh lens 1107 has negative refractive power, a first surface of the seventh lens 1107 is concave in the paraxial region, and a second surface of the seventh lens 1107 is convex in the paraxial region.

[0382] The eighth lens 1108 has positive refractive power, a first surface of the eighth lens 1108 is convex in the paraxial region, and a second surface of the eighth lens 1108 is concave in the paraxial region.

[0383] The ninth lens 1109 has negative refractive power, a first surface of the ninth lens 1109 is convex in the paraxial region, and a second surface of the ninth lens 1109 is concave in the paraxial region.

[0384] In addition, one or more of the fifth to ninth lenses 1105 to 1109 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0385] Each surface of the first to ninth lenses 1101 to 1109 has an aspherical coefficient as shown in the following Table 22. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 1101 to 1109 are aspherical surfaces.

[0386] Table 22

[0387]

[0388]

[0389] In addition, the optical imaging system 1100 configured as described above may have Fig. 22 Aberration characteristics shown in .

[0390] Fig.23 is a structural diagram of an optical imaging system according to a twelfth embodiment of the present disclosure, and Fig.24 It is shown Fig.23 Graph of the aberration characteristics of the optical imaging system shown in .

[0391] Reference Fig.23 According to the twelfth embodiment of the present utility model, the optical imaging system 1200 includes a first lens 1201, a second lens 1202, a third lens 1203, a fourth lens 1204, a fifth lens 1205, a sixth lens 1206, a seventh lens 1207, an eighth lens 1208 and a ninth lens 1209, and may also include a filter 1210 and an image sensor IS.

[0392] The optical imaging system 1200 according to the twelfth embodiment of the present invention can form a focus on an imaging surface 1211. The imaging surface 1211 may represent a surface on which a focus is formed by the optical imaging system. In an example, the imaging surface 1211 may represent a surface of the image sensor IS on which light is received.

[0393] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number and focal length) of each lens are shown in Table 23 below.

[0394] Table 23

[0395]

[0396]

[0397] According to the twelfth embodiment of the optical imaging system 1200 of the present invention, the total focal length f is 6.84 mm, Fno is 1.59, IMG HT is 6 mm, FOV is 80.5°, SWA11 is 19.281°, SWA21 is 33.538°, and f12 is 5.670 mm.

[0398] In the twelfth embodiment of the present utility model, the first lens 1201 has positive refractive power, the first surface of the first lens 1201 is convex in the paraxial region, and the second surface of the first lens 1201 is concave in the paraxial region.

[0399] The second lens 1202 has positive refractive power, a first surface of the second lens 1202 is convex in the paraxial region, and a second surface of the second lens 1202 is concave in the paraxial region.

[0400] The third lens 1203 has negative refractive power, a first surface of the third lens 1203 is convex in the paraxial region, and a second surface of the third lens 1203 is concave in the paraxial region.

[0401] The fourth lens 1204 has negative refractive power, a first surface of the fourth lens 1204 is convex in the paraxial region, and a second surface of the fourth lens 1204 is concave in the paraxial region.

[0402] The fifth lens 1205 has positive refractive power, a first surface of the fifth lens 1205 is convex in the paraxial region, and a second surface of the fifth lens 1205 is concave in the paraxial region.

[0403] The sixth lens 1206 has negative refractive power, a first surface of the sixth lens 1206 is convex in the paraxial region, and a second surface of the sixth lens 1206 is concave in the paraxial region.

[0404] The seventh lens 1207 has positive refractive power, a first surface of the seventh lens 1207 is concave in the paraxial region, and a second surface of the seventh lens 1207 is convex in the paraxial region.

[0405] The eighth lens 1208 has positive refractive power, a first surface of the eighth lens 1208 is convex in the paraxial region, and a second surface of the eighth lens 1208 is concave in the paraxial region.

[0406] The ninth lens 1209 has negative refractive power, a first surface of the ninth lens 1209 is convex in the paraxial region, and a second surface of the ninth lens 1209 is concave in the paraxial region.

[0407] In addition, one or more of the fifth to ninth lenses 1205 to 1209 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0408] Each surface of the first to ninth lenses 1201 to 1209 has an aspherical coefficient as shown in the following Table 24. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 1201 to 1209 are aspherical surfaces.

[0409] Table 24

[0410]

[0411]

[0412]

[0413] In addition, the optical imaging system 1200 configured as described above may have Fig.24 Aberration characteristics shown in .

[0414] Fig.25 is a structural diagram of an optical imaging system according to a thirteenth embodiment of the present disclosure, and Fig.26 It is shown Fig.25 Graph of the aberration characteristics of the optical imaging system shown in .

[0415] Reference Fig.25 According to the thirteenth embodiment of the utility model, the optical imaging system 1300 includes a first lens 1301, a second lens 1302, a third lens 1303, a fourth lens 1304, a fifth lens 1305, a sixth lens 1306, a seventh lens 1307, an eighth lens 1308 and a ninth lens 1309, and may also include a filter 1310 and an image sensor IS.

[0416] The optical imaging system 1300 according to the thirteenth embodiment of the present invention can form a focus on an imaging surface 1311. The imaging surface 1311 can represent a surface on which a focus is formed by the optical imaging system. For example, the imaging surface 1311 can represent a surface of the image sensor IS on which light is received.

[0417] The lens characteristics (radius of curvature, lens thickness, distance between lenses, refractive index, Abbe number and focal length) of each lens are shown in Table 25 below.

[0418] Table 25

[0419]

[0420]

[0421] According to the thirteenth embodiment of the optical imaging system 600 of the present invention, the total focal length f is 6.84 mm, Fno is 1.59, IMG HT is 6 mm, FOV is 80.5°, SWA11 is 19.309°, SWA21 is 33.511°, and f12 is 5.670 mm.

[0422] In the thirteenth embodiment of the present utility model, the first lens 1301 has positive refractive power, the first surface of the first lens 1301 is convex in the paraxial region, and the second surface of the first lens 1301 is concave in the paraxial region.

[0423] The second lens 1302 has positive refractive power, a first surface of the second lens 1302 is convex in the paraxial region, and a second surface of the second lens 1302 is concave in the paraxial region.

[0424] The third lens 1303 has negative refractive power, a first surface of the third lens 1303 is convex in the paraxial region, and a second surface of the third lens 1303 is concave in the paraxial region.

[0425] The fourth lens 1304 has negative refractive power, a first surface of the fourth lens 1304 is convex in the paraxial region, and a second surface of the fourth lens 1304 is concave in the paraxial region.

[0426] The fifth lens 1305 has positive refractive power, a first surface of the fifth lens 1305 is convex in the paraxial region, and a second surface of the fifth lens 1305 is concave in the paraxial region.

[0427] The sixth lens 1306 has positive refractive power, a first surface of the sixth lens 1306 is convex in the paraxial region, and a second surface of the sixth lens 1306 is concave in the paraxial region.

[0428] The seventh lens 1307 has positive refractive power, a first surface of the seventh lens 1307 is concave in the paraxial region, and a second surface of the seventh lens 1307 is convex in the paraxial region.

[0429] The eighth lens 1308 has positive refractive power, a first surface of the eighth lens 1308 is convex in the paraxial region, and a second surface of the eighth lens 1308 is concave in the paraxial region.

[0430] The ninth lens 1309 has negative refractive power, a first surface of the ninth lens 1309 is convex in the paraxial region, and a second surface of the ninth lens 1309 is concave in the paraxial region.

[0431] In addition, one or more of the fifth to ninth lenses 1305 to 1309 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0432] Each surface of the first to ninth lenses 1301 to 1309 has an aspherical coefficient as shown in the following Table 26. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 1301 to 1309 are aspherical surfaces.

[0433] Table 26

[0434]

[0435]

[0436]

[0437] In addition, the optical imaging system 1300 configured as described above may have Fig.26 Aberration characteristics shown in .

[0438] Fig. 27 is a structural diagram of an optical imaging system according to a fourteenth embodiment of the present disclosure, and Fig.28 It is shown Fig. 27 Graph of the aberration characteristics of the optical imaging system shown in .

[0439] Reference Fig. 27 According to the fourteenth embodiment of the utility model, the optical imaging system 1400 includes a first lens 1401, a second lens 1402, a third lens 1403, a fourth lens 1404, a fifth lens 1405, a sixth lens 1406, a seventh lens 1407, an eighth lens 1408 and a ninth lens 1409, and may also include a filter 1410 and an image sensor IS.

[0440] The optical imaging system 1400 according to the fourteenth embodiment of the present invention can form a focus on an imaging surface 1411. The imaging surface 1411 may represent a surface on which a focus is formed by the optical imaging system. In an example, the imaging surface 1411 may represent a surface of the image sensor IS on which light is received.

[0441] The lens characteristics (curvature radius, lens thickness, distance between lenses, refractive index, Abbe number and focal length) of each lens are shown in Table 27 below.

[0442] Table 27

[0443]

[0444]

[0445] According to the fourteenth embodiment of the optical imaging system 1400 of the present invention, the total focal length f is 6.83 mm, Fno is 1.49, IMG HT is 6 mm, FOV is 80.5°, SWA11 is 20.181°, SWA21 is 34.613°, and f12 is 5.623 mm.

[0446] In the fourteenth embodiment of the present utility model, the first lens 1401 has positive refractive power, the first surface of the first lens 1401 is convex in the paraxial region, and the second surface of the first lens 1401 is concave in the paraxial region.

[0447] The second lens 1402 has positive refractive power, a first surface of the second lens 1402 is convex in the paraxial region, and a second surface of the second lens 1402 is concave in the paraxial region.

[0448] The third lens 1403 has negative refractive power, a first surface of the third lens 1403 is convex in the paraxial region, and a second surface of the third lens 1403 is concave in the paraxial region.

[0449] The fourth lens 1404 has positive refractive power, a first surface of the fourth lens 1404 is convex in the paraxial region, and a second surface of the fourth lens 1404 is concave in the paraxial region.

[0450] The fifth lens 1405 has negative refractive power, a first surface of the fifth lens 1405 is convex in the paraxial region, and a second surface of the fifth lens 1405 is concave in the paraxial region.

[0451] The sixth lens 1406 has negative refractive power, a first surface of the sixth lens 1406 is convex in the paraxial region, and a second surface of the sixth lens 1406 is concave in the paraxial region.

[0452] The seventh lens 1407 has negative refractive power, a first surface of the seventh lens 1407 is concave in the paraxial region, and a second surface of the seventh lens 1407 is convex in the paraxial region.

[0453] The eighth lens 1408 has positive refractive power, a first surface of the eighth lens 1408 is convex in the paraxial region, and a second surface of the eighth lens 1408 is concave in the paraxial region.

[0454] The ninth lens 1409 has negative refractive power, a first surface of the ninth lens 1409 is convex in the paraxial region, and a second surface of the ninth lens 1409 is concave in the paraxial region.

[0455] In addition, one or more of the fifth to ninth lenses 1405 to 1409 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0456] Each surface of the first to ninth lenses 1401 to 1409 has an aspherical coefficient as shown in the following Table 28. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 1401 to 1409 are aspherical surfaces.

[0457] Table 28

[0458]

[0459]

[0460] In addition, the optical imaging system 1400 configured as described above may have Fig.28 Aberration characteristics shown in .

[0461] Fig.29 is a structural diagram of an optical imaging system according to a fifteenth embodiment of the present disclosure, and Fig.30 It is shown Fig.29 Graph of the aberration characteristics of the optical imaging system shown in .

[0462] Reference Fig.29 According to the fifteenth embodiment of the utility model, the optical imaging system 1500 includes a first lens 1501, a second lens 1502, a third lens 1503, a fourth lens 1504, a fifth lens 1505, a sixth lens 1506, a seventh lens 1507, an eighth lens 1508 and a ninth lens 1509, and may also include a filter 1510 and an image sensor IS.

[0463] The optical imaging system 1500 according to the fifteenth embodiment of the present invention can form a focus on an imaging surface 1511. The imaging surface 1511 may represent a surface on which a focus is formed by the optical imaging system. In an example, the imaging surface 1511 may represent a surface of the image sensor IS on which light is received.

[0464] The lens characteristics (radius of curvature, lens thickness, distance between lenses, refractive index, Abbe number and focal length) of each lens are shown in Table 29 below.

[0465] Table 29

[0466]

[0467] According to the fifteenth embodiment of the optical imaging system 1500 of the present invention, the total focal length f is 6.84 mm, Fno is 1.69, IMG HT is 6 mm, FOV is 80.49°, SWA11 is 19.045°, SWA21 is 33.395°, and f12 is 5.671 mm.

[0468] In the fifteenth embodiment of the present utility model, the first lens 1501 has positive refractive power, the first surface of the first lens 1501 is convex in the paraxial region, and the second surface of the first lens 1501 is concave in the paraxial region.

[0469] The second lens 1502 has positive refractive power, a first surface of the second lens 1502 is convex in the paraxial region, and a second surface of the second lens 1502 is concave in the paraxial region.

[0470] The third lens 1503 has negative refractive power, a first surface of the third lens 1503 is convex in the paraxial region, and a second surface of the third lens 1503 is concave in the paraxial region.

[0471] The fourth lens 1504 has positive refractive power, a first surface of the fourth lens 1504 is convex in the paraxial region, and a second surface of the fourth lens 1504 is concave in the paraxial region.

[0472] The fifth lens 1505 has negative refractive power, a first surface of the fifth lens 1505 is convex in the paraxial region, and a second surface of the fifth lens 1505 is concave in the paraxial region.

[0473] The sixth lens 1506 has negative refractive power, a first surface of the sixth lens 1506 is convex in the paraxial region, and a second surface of the sixth lens 1506 is concave in the paraxial region.

[0474] The seventh lens 1507 has negative refractive power, a first surface of the seventh lens 1507 is concave in the paraxial region, and a second surface of the seventh lens 1507 is convex in the paraxial region.

[0475] The eighth lens 1508 has positive refractive power, a first surface of the eighth lens 1508 is convex in the paraxial region, and a second surface of the eighth lens 1508 is concave in the paraxial region.

[0476] The ninth lens 1509 has negative refractive power, a first surface of the ninth lens 1509 is convex in the paraxial region, and a second surface of the ninth lens 1509 is concave in the paraxial region.

[0477] In addition, one or more of the fifth to ninth lenses 1505 to 1509 have at least one inflection point formed on any one or both of the first and second surfaces thereof.

[0478] Each surface of the first to ninth lenses 1501 to 1509 has an aspherical coefficient as shown in the following Table 30. For example, both the object-side surface and the image-side surface of each of the first to ninth lenses 1501 to 1509 are aspherical surfaces.

[0479] Table 30

[0480]

[0481]

[0482]

[0483] In addition, the optical imaging system 1500 configured as described above may have Fig.30 Aberration characteristics shown in .

[0484] Table 31 below shows conditional expression values ​​of the optical imaging system according to each of the first embodiment to the fifteenth embodiment.

[0485] Table 31

[0486]

[0487]

[0488]

[0489] Although the present disclosure includes specific examples, it will be apparent after understanding the disclosure of the present application that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The description of the features or aspects in each example should be considered to be applicable to similar features or aspects in other examples. If the described techniques are performed in a different order, and / or if the components in the described systems, architectures, devices, or circuits are combined in different ways and / or replaced or supplemented by other components or their equivalents, appropriate results can still be achieved. Therefore, the scope of the present disclosure is not limited by specific embodiments, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be understood to be included in the present disclosure.

Claims

1. An optical imaging system, characterized in that: The optical imaging system includes: A first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens arranged in sequence along the optical axis of the optical imaging system from the object side of the optical imaging system toward the imaging surface of the optical imaging system, wherein, the first lens has a positive refractive power, the second lens has a positive refractive power, and the third lens has a negative refractive power, the Abbe number of the third lens is less than the Abbe number of the first lens and less than the Abbe number of the second lens, and TTL / (2×IMG HT)<0.7 is satisfied, where TTL is the distance along the optical axis from the object side surface of the first lens to the imaging surface, and IMG HT is half of the diagonal length of the imaging surface.

2. The optical imaging system according to claim 1, characterized in that: Any one or both of v1 - v3<45 and v1 - v5<45 are satisfied, where v1 is the Abbe number of the first lens, v3 is the Abbe number of the third lens, and v5 is the Abbe number of the fifth lens.

3. The optical imaging system according to claim 2, characterized in that: 35<v3 + v5<45 is satisfied.

4. The optical imaging system according to claim 1, characterized in that: 0<f1 / f<30 is satisfied, where f1 is the focal length of the first lens, and f is the total focal length of the optical imaging system.

5. The optical imaging system according to claim 1, characterized in that: 0<f2 / f<3 is satisfied, where f2 is the focal length of the second lens, and f is the total focal length of the optical imaging system.

6. The optical imaging system according to claim 1, characterized in that: -3<f3 / f<0 is satisfied, where f3 is the focal length of the third lens, and f is the total focal length of the optical imaging system.

7. The optical imaging system according to claim 1, characterized in that: 0.4<|f12 / f3|<0.6 is satisfied, where f12 is the combined focal length of the first lens and the second lens, and f3 is the focal length of the third lens.

8. The optical imaging system according to claim 7, characterized in that: 4.5<f1 / f2<21 is satisfied, where f1 is the focal length of the first lens, and f2 is the focal length of the second lens.

9. The optical imaging system according to claim 7, characterized in that: 0.4<|f2 / f3|<0.7 is satisfied, where f2 is the focal length of the second lens.

10. The optical imaging system according to claim 7, characterized in that: 0.09<|f3 / f1|<0.32 is satisfied, where f1 is the focal length of the first lens.

11. The optical imaging system according to claim 1, characterized in that: TTL / f<1.5 and BFL / f<0.5 are satisfied, where BFL is the distance along the optical axis from the image side surface of the ninth lens to the imaging surface, and f is the total focal length of the optical imaging system.

12. The optical imaging system according to claim 1, characterized in that: Fno≤1.69 is satisfied, where Fno is the F-number of the optical imaging system.

13. The optical imaging system according to claim 1, characterized in that: FOV×IMG HT / f>60° is satisfied, where FOV is the field of view angle of the optical imaging system, and f is the total focal length of the optical imaging system.

14. The optical imaging system according to claim 1, characterized in that: Any one or both of SWA11<25° and SWA21<36° are satisfied, where SWA11 is the sweep angle at the end of the effective diameter of the object side surface of the first lens, and SWA21 is the sweep angle at the end of the effective diameter of the object side surface of the second lens.

15. The optical imaging system according to claim 1, characterized in that: Each of the first lens to the sixth lens has a convex object side surface in its paraxial region and a concave image side surface in its paraxial region.

16. The optical imaging system according to claim 1, characterized in that: A sum of an Abbe number of the third lens and an Abbe number of the fifth lens is smaller than an Abbe number of the fourth lens.

17. The optical imaging system according to claim 1, characterized in that: The ninth lens has negative refractive power, has a convex object-side surface in a paraxial region thereof, and has a concave image-side surface in a paraxial region thereof.

18. The optical imaging system according to claim 1, characterized in that: Each of the first lens and the second lens has an Abbe number greater than 54 and less than 57, and the third lens has an Abbe number greater than 18 and less than 24.

19. The optical imaging system according to claim 1, characterized in that: The fifth lens has a refractive index greater than 1.64 and an Abbe number less than 21.

20. The optical imaging system according to claim 1, characterized in that: Two of the fifth to seventh lenses have a refractive index greater than 1.61 and an Abbe number less than 26.

21. The optical imaging system according to claim 1, characterized in that: An Abbe number of the seventh lens is smaller than an Abbe number of the eighth lens and smaller than an Abbe number of the ninth lens.

22. The optical imaging system according to claim 1, characterized in that: A focal length of the second lens is smaller than an absolute value of a focal length of the third lens, and the absolute value of the focal length of the third lens is smaller than a focal length of the first lens.

23. The optical imaging system according to claim 1, characterized in that: The optical imaging system has a field of view angle greater than 80° and less than 85°.

Images