Optical imaging system

Abstract

An optical imaging system is provided. 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 sequentially from the object side toward the image plane, wherein the optical imaging system satisfies the following conditions: (1) TTL / 2IMH < 0.6, and (2) Fno < 1.72, where TTL is the distance from the object-side surface of the first lens to the image plane, 2IMH is the diagonal length of the image plane, and Fno is the F-number of the optical imaging system.

Description

Technical Field

[0001] [Cross-reference to related applications]

[0002] This application claims priority to Korean Patent Application No. 10-2022-0174763, filed on December 14, 2022, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes.

[0003] The following description pertains to an optical imaging system. Prior Technology

[0004] As the operation of cameras in portable devices has become increasingly important, various types of cameras (or modules) are being installed in portable devices.

[0005] As the demand for high-resolution images gradually increases, the number of lenses constituting a camera is also increasing, and the form factor of portable terminals is being miniaturized. Therefore, it is expected that a thin, high-resolution optical imaging system will be developed.

[0006] The above information is provided as background information to aid understanding of this disclosure. No determination or assertion is made as to whether any of the above content is suitable as prior art to this disclosure. Summary of the Invention

[0007] This summary is provided to introduce, in a simplified form, a series of concepts further elaborated in the embodiments below. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter.

[0008] In a general case, 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 sequentially from the object side toward the image plane. The optical imaging system comprises a total of nine lenses and satisfies the following conditional expressions: (1) TTL / 2IMH < 0.6 and (2) Fno < 1.72, where TTL is the distance from the object-side surface of the first lens to the image plane, 2IMH is the maximum effective image height of the image plane, and Fno is the F-number of the optical imaging system.

[0009] The first lens can have a positive refractive power, the second lens can have a negative refractive power, and the sixth lens can have a negative refractive power.

[0010] The object-side surface of either the fourth or fifth lens may have a concave shape in the paraxial region.

[0011] The following condition expression can be satisfied: 2.3 < T1 / T9 < 3.8, where T1 is the optical axis thickness of the first lens and T9 is the optical axis thickness of the ninth lens.

[0012] The following condition expression can be satisfied: 1.7 < TTL / ΣCT < 1.9, where TTL is the distance from the object-side surface of the first lens to the image plane, and ΣCT is the sum of the optical axis thicknesses of the first lens to the ninth lens.

[0013] The following condition expression can be satisfied: 2.5 < TTL / ΣAT < 2.8, where TTL is the distance from the object-side surface of the first lens to the image plane, and ΣAT is the sum of the optical axis intervals from the first lens to the ninth lens.

[0014] The following condition expression can be satisfied: -6 < f2 / f < -2, where f2 is the focal length of the second lens and f is the focal length of the optical imaging system.

[0015] The seventh and eighth lenses may have a convex object-side surface and a concave image-side surface.

[0016] The following condition expression can be satisfied: 9 (mm -1) < v1 / f1 < 11 (mm -1), where v1 is the Abbe number of the first lens and f1 is the focal length of the first lens.

[0017] The following condition expression can be satisfied: 11 (mm) < Fno*TTL < 12 (mm), where Fno is the F number of the optical imaging system, and TTL is the distance from the object-side surface of the first lens to the image plane.

[0018] In a general case, an optical imaging system includes: a first lens having positive refractive power; a second lens having negative refractive power; a third lens having refractive power; a fourth lens having a concave object-side surface; a fifth lens having refractive power; a sixth lens having negative refractive power; a seventh lens having refractive power and having a convex object-side surface and a concave image-side surface; an eighth lens having positive refractive power; and a ninth lens having negative refractive power, wherein the optical imaging system comprises a total of nine lenses, wherein the first to ninth lenses are arranged sequentially from the object side toward the image plane, and wherein the optical imaging system satisfies the following condition: Fno < 1.72, where Fno is the F-number of the optical imaging system.

[0019] The following condition expression can be satisfied: 1.4 < ΣCT / ΣAT < 1.6, where ΣCT is the sum of the optical axis thicknesses of the first lens to the ninth lens, and ΣAT is the sum of the optical axis intervals of the first lens to the ninth lens.

[0020] The following condition expression can be satisfied: FOV*IMH / f < 97 (˚), where FOV is the angle of view of the optical imaging system, IMH is 1 / 2 of the diagonal length of the image plane, and f is the focal length of the optical imaging system.

[0021] The following condition expression can be satisfied: 18 < v1-v5 < 31, where v1 is the Abbe number of the first lens and v5 is the Abbe number of the fifth lens.

[0022] The following condition expression can be satisfied: TTL / 2IMH < 0.6, where TTL is the distance from the object-side surface of the first lens to the image plane, and 2IMH is the diagonal length of the image plane.

[0023] The following condition expression can be satisfied: 2.3 < T1 / T9 < 3.8, where T1 is the optical axis thickness of the first lens and T9 is the optical axis thickness of the ninth lens.

[0024] In a general case, 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 sequentially from the object side toward the image plane. The optical imaging system comprises a total of nine lenses, and the optical imaging system satisfies the following conditional expressions: (1) TTL / 2IMH < 0.6, and (2) 2.5 < TTL / ΣAT < 2.8, where TTL is the distance from the object side surface of the first lens to the image plane, 2IMH is the diagonal length of the image plane, and ΣAT is the sum of the optical axis intervals from the first lens to the ninth lens.

[0025] Other features and characteristics will become apparent from reading the following detailed description, drawings and claims. Simple Explanation of the Diagram

[0026] Figure 1 shows a configuration diagram of an exemplary optical imaging system according to a first embodiment. Figure 2 shows the aberration curves of the exemplary optical imaging system shown in Figure 1. Figure 3 shows a configuration diagram of an exemplary optical imaging system according to the second embodiment. Figure 4 shows the aberration curves of the exemplary optical imaging system shown in Figure 3. Figure 5 shows a configuration diagram of an exemplary optical imaging system according to a third embodiment. Figure 6 shows the aberration curves of the exemplary optical imaging system shown in Figure 5. Figure 7 shows a configuration diagram of an exemplary optical imaging system according to the fourth embodiment. Figure 8 shows the aberration curves of the exemplary optical imaging system shown in Figure 7. Figure 9 shows a configuration diagram of an exemplary optical imaging system according to the fifth embodiment. Figure 10 shows the aberration curves of the exemplary optical imaging system shown in Figure 9. Figure 11 shows a configuration diagram of an exemplary optical imaging system according to the sixth embodiment. Figure 12 shows the aberration curves of the exemplary optical imaging system shown in Figure 11. Throughout the drawings and detailed descriptions, unless otherwise stated or specified, the same drawing reference numbers may be understood to refer to the same or similar elements, features, and structures. The drawings may not be drawn to scale, and for clarity, illustrative purposes, the relative size, proportions, and representation of elements in the drawings may be exaggerated. Implementation

[0027] The following detailed description is provided to assist the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various modifications, refinements, and equivalents of the methods, apparatus, and / or systems described herein will become apparent after understanding the disclosure of this application. For example, the order of operations and / or sequence of operations described herein are merely examples and are not intended to limit the order of operations and / or sequence of operations described herein, but as will become apparent after understanding the disclosure of this application, the order of operations and / or sequence of operations may be modified, except for those that must occur in a specific order. As another example, the order of operations and / or sequence of operations may be performed in parallel, except for at least a portion of the order of operations and / or sequence of operations that must occur in a single order (e.g., a specific order). Furthermore, for clarity and brevity, descriptions of known features may be omitted after understanding the disclosure of this application.

[0028] The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Specifically, the examples provided herein are merely to illustrate some of the many possible ways of implementing the methods, apparatus, and / or systems described herein that will become apparent upon understanding the disclosure of this application. The term "may" (for example, what an example or embodiment may include or implement) used herein with respect to examples or embodiments means that there exists at least one example or embodiment that includes or implements such a feature, but not all examples are limited thereto. The terms "example" or "embodiment" as used herein have the same meaning; for example, the phrases "in one example" and "in one embodiment" have the same meaning, and "in one or more examples" and "in one or more embodiments" have the same meaning.

[0029] The terminology used herein is for illustrative purposes only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the articles "a" and "the" are intended to include the plural form as well. The term "and / or" as used herein includes any combination of any one or more of the items listed herein. As a non-limiting example, the terms "comprise" or "comprises," "include" or "includes," and "have" or "has" indicate the presence of the stated features, numbers, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, operations, components, elements, and / or combinations thereof, or the alternation of alternative stated features, numbers, operations, components, elements, and / or combinations thereof. Additionally, while one embodiment may use terms such as "comprise" or "comprises," "include" or "have" or "has" to specify the presence of the stated features, numbers, operations, components, elements, and / or combinations thereof, other embodiments may also exist where one or more of the stated features, numbers, operations, components, elements, and / or combinations thereof are not present.

[0030] Throughout this specification, when a component or element is described as being "on," "connected to," "coupled to," or "joined to" another component, element, or layer, the component or element may be directly located "on" (e.g., in contact with), directly "connected to," directly "coupled to," or directly "joined to" the other component, element, or layer, or one or more other components, elements, or layers may reasonably be present in between. When a component, element, or layer is described as being "directly on," "directly connected to," "directly coupled to," or "directly joined to" another component, element, or layer, then no other components, elements, or layers may be present in between. Similarly, expressions such as "between" and "immediately between," as well as "adjacent to" and "immediately adjacent to" can be explained in the same way as described above.

[0031] Although terms such as "first," "second," and "third," or A, B, (a), (b), etc., may be used herein to describe various components, parts, areas, layers, or sections, these components, parts, areas, layers, or sections are not limited by these terms. Each of these terms is not used to define, for example, the nature, order, or sequence of the corresponding component, part, area, layer, or section, but only to distinguish the corresponding component, part, area, layer, or section from other components, parts, areas, layers, or sections. Therefore, without departing from the teaching of the examples, what is referred to as the first component, part, area, layer, or section in the examples described herein may also be referred to as the second component, part, area, layer, or section.

[0032] The term "and / or" as used herein includes any one of the associated listed items and any combination of any two or more of them. Unless the corresponding description and embodiments require that such listed items (e.g., "at least one of A, B, and C") be interpreted as having a combined meaning, the phrases "at least one of A, B, and C," "at least one of A, B, or C," etc., are intended to have a separate meaning, and these phrases "at least one of A, B, and C," "at least one of A, B, or C," etc., also include instances where one or more of each of A, B, and / or C may exist (e.g., any combination of one or more of each of A, B, and C).

[0033] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains, specifically in the context of understanding the disclosure of this application. Terms such as those defined in common dictionaries should be interpreted as having the same meaning as their meaning in the context of the relevant art and, more specifically, in the context of the disclosure of this application, and should not be construed as having an idealized or overly formal meaning unless explicitly defined herein. The term "may" (e.g., regarding what an example or embodiment may include or implement) used herein with respect to examples or embodiments means that there exists at least one example or embodiment that includes or implements such a feature, but not all examples are limited to this.

[0034] In the accompanying drawings, for illustrative purposes, the thickness, size, and shape of the lens may be slightly exaggerated, and specifically, the spherical or aspherical shapes shown in the drawings are merely illustrative and not limited thereto.

[0035] One or more examples may provide a thin optical imaging system for obtaining high-resolution images.

[0036] One or more examples may also provide an optical imaging system with a low F-number for acquiring bright or high-resolution images and videos.

[0037] An optical imaging system according to one or more embodiments may include nine (9) lenses arranged along an optical axis. In an example, the optical imaging system may include 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 sequentially from the object side to the imaging side.

[0038] In one or more of the examples, the first lens refers to the lens most adjacent to the object (or subject), while the ninth lens refers to the lens most adjacent to the image plane (or image sensor).

[0039] Additionally, in one or more of the examples, the first surface of each of the lenses refers to the surface closer to the object side (or the object-side surface), while the second surface refers to the surface closer to the image side (or the image-side surface).

[0040] In one or more of the examples, the units for radius of curvature, thickness, distance, total track length (TTL) (the distance from the object-side surface of the first lens to the image plane), f (focal length), image height (IMH) (half the diagonal length of the image plane), etc., are all indicated in millimeters (mm), while the unit for angle of view (or field of view) (FOV) is indicated in degrees (°).

[0041] Furthermore, in the description of lens shape, the configuration where one surface of the lens is convex indicates that the paraxial region (a very narrow region near the optical axis) of said one surface is convex, while the configuration where one surface of the lens is concave indicates that the paraxial region of said one surface is concave. Therefore, even when one surface of the lens is described as convex, the edge of the lens can still be concave. Similarly, even when one surface of the lens is described as concave, the edge of the lens can still be convex.

[0042] According to one or more embodiments, an optical imaging system may include an image sensor (or imaging device) and an infrared cutoff filter. The image sensor has an imaging surface disposed at the image plane of the optical imaging system that converts an image of an object incident through the optical imaging system into an electrical signal. The infrared cutoff filter blocks infrared radiation. In an example, the infrared cutoff filter may be disposed between a prism and the image sensor.

[0043] Additionally, according to one or more embodiments, the optical imaging system may include an aperture stop for adjusting the amount of light. In a non-limiting example, the aperture stop may be positioned between the second lens and the third lens.

[0044] According to one or more embodiments, the multiple lenses may be formed of a material with a refractive index different from that of air. In an example, the first through ninth lenses may be formed of a plastic material.

[0045] Additionally, according to one or more embodiments, at least one of the plurality of lenses may have an aspherical surface. For example, at least one of the first to ninth lenses may have an aspherical surface. Alternatively, at least one of the first and second surfaces of the first to ninth lenses may have an aspherical surface. The aspherical surface of the first to ninth lenses may be expressed by Equation 1.

[0046] Equation 1:

[0047] In Equation 1, c is the reciprocal of the radius of curvature of the corresponding lens, K is the curve constant, Y is the distance from any point on the aspherical surface to the optical axis, A to P are the aspherical surface constants of the 4th to 30th orders respectively, and Z (or sag (SAG)) is the distance from a point on the aspherical surface to the vertex of the corresponding aspherical surface in the direction of the optical axis.

[0048] The first to ninth lenses constituting the optical imaging system according to the embodiments of this disclosure can, from the object side, sequentially possess positive refractive power, negative refractive power, positive / negative refractive power, positive / negative refractive power, positive / negative refractive power, negative refractive power, positive / negative refractive power, positive refractive power, and negative refractive power. Furthermore, in this example, the first to ninth lenses can be plastic lenses.

[0049] Additionally, according to one or more embodiments, the optical imaging system may satisfy at least one of the following conditional expressions:

[0050] [Conditional Expression 1] 0 < f1 / f < 1.5

[0051] [Conditional expression 2] -6 < f2 / f < -2

[0052] [Conditional expression 3] f3 / f < 10

[0053] [Conditional Expression 4] f4 / f > -9

[0054] [Conditional expression 5] f5 / f < 11

[0055] [Conditional Expression 6] f6 / f < -1

[0056] [Conditional expression 7] -4 < f7 / f < 8

[0057] [Conditional Expression 8] 0 < f8 / f < 1.5

[0058] [Conditional expression 9] -2 < f9 / f < 0

[0059] [Conditional Expression 10] v1-v3 < 40

[0060] [Conditional Expression 11] 18 < v1-v5 < 31

[0061] [Conditional Expression 12] TTL / f < 1.25

[0062] [Conditional Expression 13] BFL / f < 0.16

[0063] [Conditional Expression 14] TTL / 2IMH < 0.6

[0064] [Conditional Expression 15] FOV*IMH / f < 97 (˚)

[0065] [Conditional Expression 16] Fno < 1.72

[0066] [Conditional Expression 17] 1.7 < TTL / ΣCT < 1.9

[0067] [Conditional Expression 18] 2.5 < TTL / ΣAT < 2.8

[0068] [Conditional Expression 19] 1.52 < IMH / ΣCT

[0069] [Conditional Expression 20] 2.1 < IMH / ΣAT

[0070] [Conditional Expression 21] 1.3 < f1 / ΣCT < 1.6

[0071] [Conditional Expression 22] 1.8 < f1 / ΣAT < 2.3

[0072] [Conditional Expression 23] 11 (mm) < Fno*TTL < 12 (mm)

[0073] [Conditional Expression 24] 1.4 < ΣCT / ΣAT < 1.6

[0074] [Conditional Expression 25] Fno / IMH < 3

[0075] [Conditional Expression 26] 9 (mm -1) < v1 / f1 < 11 (mm -1)

[0076] [Conditional Expression 27] 2.3 < T1 / T9 < 3.8

[0077] In the above expressions, f is the focal length of the optical imaging system, 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, and f9 is the focal length of the ninth lens. 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. TTL is the distance from the object-side surface of the first lens to the image plane, and BFL is the distance from the image-side surface of the ninth lens to the image plane. IMH is the maximum effective image height of the imaging plane and is equal to half the diagonal length of the image plane (e.g., equal to half the diagonal length of the effective imaging area of ​​the imaging surface of the image sensor), FOV is the viewing angle of the optical imaging system, and Fno is the F-number of the optical imaging system. ΣCT is the sum of the optical axis thicknesses of the first to the ninth lens, ΣAT is the sum of the optical axis intervals of the first to the ninth lens, T1 is the optical axis thickness of the first lens, and T9 is the optical axis thickness of the ninth lens.

[0078] In the following text, various embodiments of an exemplary optical imaging system according to one or more embodiments will be described.

[0079] Figure 1 shows a configuration diagram of an exemplary optical imaging system according to one or more embodiments, and Figure 2 shows the aberration curves of the exemplary optical imaging system shown in Figure 1.

[0080] Referring to FIG1, according to the first embodiment, the optical imaging system 100 may include 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 arranged sequentially from the object side to the imaging side.

[0081] The first lens 101 may have positive refractive power. The first surface of the first lens 101 may be convex in the paraxial region, while the second surface of the first lens may be concave in the paraxial region.

[0082] The second lens 102 may have negative refractive power. The first surface of the second lens 102 may be convex in the paraxial region, while the second surface of the second lens may be concave in the paraxial region.

[0083] The third lens 103 may have positive refractive power, and both the first and second surfaces of the third lens 103 may be convex in the paraxial region.

[0084] The fourth lens 104 may have negative refractive power, and both the first and second surfaces of the fourth lens 104 may be concave in the paraxial region.

[0085] The fifth lens 105 may have positive refractive power. The first surface of the fifth lens 105 may be convex in the paraxial region, while the second surface of the fifth lens may be concave in the paraxial region.

[0086] The sixth lens 106 may have negative refractive power. The first surface of the sixth lens 106 may be convex in the paraxial region, while the second surface of the sixth lens may be concave in the paraxial region.

[0087] The seventh lens 107 may have positive refractive power. The first surface of the seventh lens 107 may be convex in the paraxial region, while the second surface of the seventh lens may be concave in the paraxial region.

[0088] The eighth lens 108 may have positive refractive power. The first surface of the eighth lens 108 may be convex in the paraxial region, while the second surface of the eighth lens may be concave in the paraxial region.

[0089] The ninth lens 109 may have negative refractive power, and both the first and second surfaces of the ninth lens 109 may be concave in the paraxial region.

[0090] The optical imaging system 100 according to the first embodiment may include plastic lenses. In this example, all of the first to ninth lenses may be formed of plastic material.

[0091] Additionally, the optical imaging system 100 according to the first embodiment may include an aperture stop (not shown), an infrared cutoff filter F, and an image sensor S. In an example, the aperture stop may be disposed between the second lens 102 and the third lens 103.

[0092] Table 1 shows the properties of the optical imaging system according to the first embodiment.

[0093] Table 1: Surface number radius of curvature Thickness / Distance Refractive index Abbe number 0 object infinity 1 First lens 2.31 0.921 1.544 56.0 2 7.84 0.149 3 Second lens 10.32 0.281 1.680 18.2 4 5.40 0.289 5 Third lens 19.09 0.394 1.535 55.7 6 -351.04 0.100 7 Fourth lens -45.48 0.280 1.680 18.2 8 45.85 0.100 9 Fifth lens 11.40 0.364 1.567 37.4 10 22.90 0.481 11 Sixth lens 55.37 0.280 1.614 25.9 12 6.44 0.101 13 Seventh Lens 5.47 0.400 1.535 55.7 14 7.00 0.126 15 Eighth lens 2.55 0.559 1.567 37.4 16 12.91 0.966 17 Ninth Lens -19.61 0.353 1.535 55.7 18 2.89 0.250 19 Infrared cut-off filter infinity 0.210 1.517 64.2 20 infinity 0.400 twenty one image infinity

[0094] Table 2 shows the aspherical surface values ​​of the optical imaging system according to the first embodiment.

[0095] Table 2: 1 2 3 4 5 6 7 8 9 K -1.023 6.873 31.340 6.291 97.564 -99.000 26.703 -50.763 -17.523 A 0.010 -0.014 -0.037 -0.004 -0.011 -0.012 -0.030 -0.039 -0.068 B 0.021 -0.044 0.110 -0.146 -0.099 -0.148 0.113 0.055 0.076 C -0.130 0.273 -0.504 1.328 0.486 1.055 -0.575 -0.017 -0.127 D 0.438 -0.907 1.858 -6.477 -1.398 -4.624 1.923 -0.393 0.089 E -0.918 2.027 -4.713 20.721 2.284 13.046 -4.605 1.476 0.110 F 1.290 -3.184 8.401 -45.719 -1.385 -24.972 8.008 -2.924 -0.383 G -1.262 3.587 -10.743 71.547 -2.395 33.487 -10.209 3.749 0.524 H 0.878 -2.924 9.953 -80.623 6.959 -31.994 9.583 -3.311 -0.449 J -0.436 1.724 -6.679 65.657 -8.614 21.872 -6.601 2.061 0.265 L 0.154 -0.727 3.208 -38.307 6.506 -10.606 3.291 -0.904 -0.110 M -0.038 0.213 -1.074 15.618 -3.176 3.557 -1.155 0.274 0.032 N 0.006 -0.041 0.238 -4.227 0.982 -0.784 0.270 -0.054 -0.006 O -0.001 0.005 -0.031 0.682 -0.176 0.102 -0.038 0.006 0.001 P 0.000 0.000 0.002 -0.050 0.014 -0.006 0.002 0.000 0.000 10 11 12 13 14 15 16 17 18 TO 25,894 99,000 -2.442 -1.013 1,282 -1.014 7,417 9.187 -0.892 AND -0.039 -0.104 -0.183 -0.083 -0.054 -0.031 0.052 -0.076 -0.086 B 0.008 0.162 0.225 0.089 0.001 -0.021 -0.039 0.018 0.026 C 0.047 -0.290 -0.360 -0.169 -0.003 0.031 0.025 0.001 -0.006 D -0.212 0.449 0.485 0.211 0.011 -0.023 -0.014 -0.001 0.001 E 0.439 -0.527 -0.477 -0.166 -0.010 0.011 0.006 0.000 0.000 F -0.577 0.446 0.339 0.087 0.005 -0.003 -0.002 0.000 0.000 G 0.525 -0.273 -0.177 -0.032 -0.001 0.001 0.000 0.000 0.000 H -0.340 0.121 0.069 0.008 0.000 0.000 0.000 0.000 0.000 J 0.158 -0.038 -0.020 -0.001 0.000 0.000 0.000 0.000 0.000 L -0.052 0.009 0.004 0.000 0.000 0.000 0.000 0.000 0.000 M 0.012 -0.001 -0.001 0.000 0.000 0.000 0.000 0.000 0.000 N -0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 P 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

[0096] Figure 3 shows a configuration diagram of an exemplary optical imaging system according to the second embodiment, and Figure 4 shows the aberration curves of the exemplary optical imaging system shown in Figure 3.

[0097] According to the second embodiment, the optical imaging system 200 may include 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 arranged sequentially from the object side to the imaging side.

[0098] The first lens 201 may have positive refractive power. The first surface of the first lens 201 may be convex in the paraxial region, while the second surface of the first lens may be concave in the paraxial region.

[0099] The second lens 202 may have negative refractive power. The first surface of the second lens 202 may be convex in the paraxial region, while the second surface of the second lens may be concave in the paraxial region.

[0100] The third lens 203 may have positive refractive power. The first surface of the third lens 203 may be convex in the paraxial region, while the second surface of the third lens may be concave in the paraxial region.

[0101] The fourth lens 204 may have positive refractive power. The first surface of the fourth lens 204 may be concave in the paraxial region, while the second surface of the fourth lens may be convex in the paraxial region.

[0102] The fifth lens 205 may have positive refractive power. The first surface of the fifth lens 205 may be convex in the paraxial region, while the second surface of the fifth lens may be concave in the paraxial region.

[0103] The sixth lens 206 may have negative refractive power. The first surface of the sixth lens 206 may be convex in the paraxial region, while the second surface of the sixth lens may be concave in the paraxial region.

[0104] The seventh lens 207 may have positive refractive power. The first surface of the seventh lens 207 may be convex in the paraxial region, while the second surface of the seventh lens 207 may be concave in the paraxial region.

[0105] The eighth lens 208 may have positive refractive power. The first surface of the eighth lens 208 may be convex in the paraxial region, while the second surface of the eighth lens may be concave in the paraxial region.

[0106] The ninth lens 209 may have negative refractive power, and both the first and second surfaces of the ninth lens 209 may be concave in the paraxial region.

[0107] The optical imaging system 200 according to the second embodiment may include plastic lenses. In this example, all of the first to ninth lenses may be formed of plastic material.

[0108] Additionally, the exemplary optical imaging system 200 according to the second embodiment may include an aperture stop (not shown), an infrared cutoff filter F, and an image sensor S. In a non-limiting example, the aperture stop may be disposed between the second lens 202 and the third lens 203.

[0109] Table 3 shows the properties of the optical imaging system according to the second embodiment.

[0110] Table 3: Surface number radius of curvature Thickness / Distance Refractive index Abbe number 0 object infinity 1 First lens 2.32 0.941 1.544 56.0 2 8.48 0.154 3 Second lens 11.43 0.280 1.680 18.2 4 5.29 0.290 5 Third lens 17.67 0.374 1.535 55.7 6 46.89 0.101 7 Fourth lens -712.00 0.342 1.614 25.9 8 -332.00 0.107 9 Fifth lens 15.88 0.356 1.567 37.4 10 28.13 0.470 11 Sixth lens 43.30 0.280 1.635 24.0 12 4.76 0.100 13 Seventh Lens 4.25 0.486 1.535 55.7 14 6.95 0.111 15 Eighth lens 2.53 0.523 1.567 37.4 16 13.12 0.948 17 Ninth Lens -20.92 0.316 1.535 55.7 18 2.89 0.250 19 Infrared cut-off filter infinity 0.210 1.5168 64.2 20 infinity 0.404 twenty one image infinity

[0111] Table 4 shows the aspherical surface values ​​of an exemplary optical imaging system according to the second embodiment.

[0112] Table 4: 1 2 3 4 5 6 7 8 9 K -1.022 6.767 31.485 6.121 88.327 -91.406 99.000 -99.000 -7.719 A 0.008 -0.014 -0.036 -0.004 -0.017 -0.029 -0.034 -0.036 -0.063 B 0.033 -0.030 0.114 -0.141 -0.041 0.018 0.135 0.036 0.096 C -0.176 0.187 -0.539 1.273 0.219 -0.016 -0.692 0.044 -0.336 D 0.551 -0.618 1.973 -6.177 -0.797 -0.087 2.436 -0.515 0.907 E -1.104 1.379 -4.938 19.613 2.047 0.254 -6.024 1.661 -1.812 F 1.503 -2.163 8.673 -42.832 -3.759 -0.169 10.538 -3.163 2.640 G -1.438 2.430 -10.932 66.195 4.897 -0.422 -13.229 4.019 -2.802 H 0.983 -1.974 9.993 -73.515 -4.426 1.155 12.018 -3.565 2.160 J -0.483 1.160 -6.626 58.893 2.651 -1.367 -7.899 2.245 -1.203 L 0.169 -0.488 3.150 -33.740 -0.934 0.970 3.714 -1.002 0.477 M -0.041 0.143 -1.045 13.484 0.105 -0.437 -1.216 0.310 -0.131 N 0.007 -0.028 0.230 -3.570 0.053 0.123 0.263 -0.063 0.023 O -0.001 0.003 -0.030 0.563 -0.023 -0.020 -0.034 0.008 -0.002 P 0.000 0.000 0.002 -0.040 0.003 0.001 0.002 0.000 0.000 10 11 12 13 14 15 16 17 18 K 36.250 99.000 -2.525 -1.108 1.662 -1.013 7.658 9.002 -0.892 A -0.037 -0.101 -0.155 -0.037 -0.042 -0.043 0.045 -0.071 -0.080 B 0.034 0.124 0.064 -0.104 -0.032 -0.001 -0.023 0.012 0.021 C -0.108 -0.169 0.013 0.190 0.043 0.012 0.011 0.004 -0.003 D 0.238 0.250 -0.003 -0.180 -0.026 -0.011 -0.006 -0.002 0.000 E -0.386 -0.321 -0.056 0.112 0.010 0.006 0.003 0.000 0.000 F 0.447 0.297 0.080 -0.049 -0.002 -0.002 -0.001 0.000 0.000 G -0.370 -0.193 -0.058 0.016 0.000 0.000 0.000 0.000 0.000 H 0.219 0.089 0.027 -0.004 0.000 0.000 0.000 0.000 0.000 J -0.093 -0.029 -0.009 0.001 0.000 0.000 0.000 0.000 0.000 L 0.028 0.006 0.002 0.000 0.000 0.000 0.000 0.000 0.000 M -0.006 -0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 N 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 P 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

[0113] Figure 5 is a configuration diagram of an exemplary optical imaging system according to the third embodiment, and Figure 6 is an aberration curve of the exemplary optical imaging system shown in Figure 5.

[0114] The optical imaging system 300 according to the third embodiment may include 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 arranged sequentially from the object side to the imaging side.

[0115] The first lens 301 may have positive refractive power. The first surface of the first lens 301 may be convex in the paraxial region, while the second surface of the first lens may be concave in the paraxial region.

[0116] The second lens 302 may have negative refractive power. The first surface of the second lens 302 may be convex in the paraxial region, while the second surface of the second lens may be concave in the paraxial region.

[0117] The third lens 303 can have positive refractive power, and both the first and second surfaces of the third lens 303 can be convex in the paraxial region.

[0118] The fourth lens 304 may have negative refractive power. The first surface of the fourth lens 304 may be concave in the paraxial region, while the second surface of the fourth lens may be convex in the paraxial region.

[0119] The fifth lens 305 may have negative refractive power. The first surface of the fifth lens 305 may be convex in the paraxial region, while the second surface of the fifth lens may be concave in the paraxial region.

[0120] The sixth lens 306 may have negative refractive power. The first surface of the sixth lens 306 may be convex in the paraxial region, while the second surface of the sixth lens may be concave in the paraxial region.

[0121] The seventh lens 307 may have positive refractive power. The first surface of the seventh lens 307 may be convex in the paraxial region, while the second surface of the seventh lens may be concave in the paraxial region.

[0122] The eighth lens 308 may have positive refractive power. The first surface of the eighth lens 308 may be convex in the paraxial region, while the second surface of the eighth lens may be concave in the paraxial region.

[0123] The ninth lens 309 may have negative refractive power, and both the first and second surfaces of the ninth lens 309 may be concave in the paraxial region.

[0124] The optical imaging system 300 according to the third embodiment may include plastic lenses. In a non-limiting example, all of the first to ninth lenses may be formed of plastic material.

[0125] Additionally, the optical imaging system 300 according to the third embodiment may include an aperture stop (not shown), an infrared cutoff filter F, and an image sensor S. In an example, the aperture stop may be disposed between the second lens 302 and the third lens 303.

[0126] Table 5 shows the properties of the optical imaging system according to the third embodiment.

[0127] Table 5: Surface number radius of curvature Thickness / Distance Refractive index Abbe number 0 object infinity 1 First lens 2.32 0.948 1.544 56.0 2 8.20 0.164 3 Second lens 10.86 0.275 1.680 18.2 4 5.50 0.290 5 Third lens 19.34 0.377 1.535 55.7 6 -69.89 0.106 7 Fourth lens -26.19 0.260 1.661 20.4 8 -120.56 0.119 9 Fifth lens 403.00 0.379 1.614 25.9 10 228.67 0.408 11 Sixth lens 24.70 0.260 1.614 25.9 12 5.32 0.102 13 Seventh Lens 4.73 0.445 1.535 55.7 14 6.82 0.105 15 Eighth lens 2.50 0.557 1.567 37.4 16 13.13 1.049 17 Ninth Lens -19.96 0.262 1.535 55.7 18 2.93 0.265 19 Infrared cut-off filter infinity 0.210 1.5168 64.2 20 infinity 0.365 twenty one image infinity 0.000

[0128] Table 6 shows the aspherical surface values ​​of an exemplary optical imaging system according to the third embodiment.

[0129] Table 6: 1 2 3 4 5 6 7 8 9 K -1.026 6.833 31.879 6.010 74.500 59.411 46.849 -99.000 -99.000 A 0.005 -0.012 -0.037 -0.005 -0.032 -0.028 -0.044 -0.046 -0.066 B 0.044 -0.047 0.143 -0.133 0.143 0.011 0.201 0.095 0.114 C -0.203 0.283 -0.819 1.242 -1.036 0.080 -0.979 -0.166 -0.415 D 0.604 -0.960 3.317 -6.071 4.778 -0.543 3.434 0.091 1.189 E -1.205 2.175 -8.937 19.212 -14.984 1.498 -8.698 0.290 -2.493 F 1.672 -3.464 16.671 -41.590 33.156 -2.405 15.783 -0.914 3.747 G -1.653 3.978 -22.133 63.571 -52.877 2.402 -20.614 1.399 -4.046 H 1.181 -3.333 21.210 -69.752 61.386 -1.418 19.472 -1.391 3.154 J -0.610 2.039 -14.708 55.164 -51.858 0.333 -13.287 0.958 -1.772 L 0.226 -0.900 7.309 -31.171 31.505 0.162 6.474 -0.461 0.709 M -0.058 0.278 -2.537 12.271 -13.394 -0.167 -2.193 0.153 -0.197 N 0.010 -0.057 0.584 -3.196 3.778 0.063 0.490 -0.033 0.036 O -0.001 0.007 -0.080 0.495 -0.635 -0.012 -0.065 0.0040 -0.004 P 0.000 0.000 0.005 -0.034 0.048 0.001 0.004 0.000 0.000 10 11 12 13 14 15 16 17 18 K 99.000 99.000 -1.507 -0.467 1.647 -1.015 7.506 9.909 -0.892 A -0.040 -0.103 -0.140 -0.017 -0.038 -0.047 0.043 -0.070 -0.078 B 0.037 0.143 -0.003 -0.172 -0.046 0.003 -0.017 0.009 0.017 C -0.120 -0.237 0.129 0.290 0.060 0.010 0.005 0.007 -0.001 D 0.300 0.387 -0.114 -0.259 -0.038 -0.012 -0.003 -0.003 -0.001 E -0.538 -0.480 0.012 0.146 0.014 0.007 0.002 0.001 0.000 F 0.683 0.411 0.049 -0.055 -0.003 -0.002 -0.001 0.000 0.000 G -0.616 -0.243 -0.045 0.015 0.000 0.000 0.000 0.000 0.000 H 0.400 0.100 0.022 -0.003 0.000 0.000 0.000 0.000 0.000 J -0.188 -0.029 -0.007 0.000 0.000 0.000 0.000 0.000 0.000 L 0.063 0.006 0.002 0.000 0.000 0.000 0.000 0.000 0.000 M -0.015 -0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 N 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 P 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

[0130] Figure 7 shows a configuration diagram of an exemplary optical imaging system according to the fourth embodiment, and Figure 8 shows the aberration curves of the exemplary optical imaging system shown in Figure 7.

[0131] The optical imaging system 400 according to the fourth embodiment may include 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 arranged sequentially from the object side to the imaging side.

[0132] The first lens 401 may have positive refractive power. The first surface of the first lens 401 may be convex in the paraxial region, while the second surface of the first lens may be concave in the paraxial region.

[0133] The second lens 402 may have negative refractive power. The first surface of the second lens 402 may be convex in the paraxial region, while the second surface of the second lens may be concave in the paraxial region.

[0134] The third lens 403 may have positive refractive power. The first surface of the third lens 403 may be convex in the paraxial region, while the second surface of the third lens may be concave in the paraxial region.

[0135] The fourth lens 404 may have positive refractive power. The first surface of the fourth lens 404 may be concave in the paraxial region, while the second surface of the fourth lens may be convex in the paraxial region.

[0136] The fifth lens 405 may have negative refractive power. The first surface of the fifth lens 405 may be convex in the paraxial region, while the second surface of the fifth lens may be concave in the paraxial region.

[0137] The sixth lens 406 may have negative refractive power. The first surface of the sixth lens 406 may be convex in the paraxial region, while the second surface of the sixth lens may be concave in the paraxial region.

[0138] The seventh lens 407 may have positive refractive power. The first surface of the seventh lens 407 may be convex in the paraxial region, while the second surface of the seventh lens may be concave in the paraxial region.

[0139] The eighth lens 408 may have positive refractive power. The first surface of the eighth lens 408 may be convex in the paraxial region, while the second surface of the eighth lens may be concave in the paraxial region.

[0140] The ninth lens 409 may have negative refractive power, and both the first and second surfaces of the ninth lens 409 may be concave in the paraxial region.

[0141] The optical imaging system 400 according to the fourth embodiment may include plastic lenses. In this example, all of the first to ninth lenses may be formed of plastic material.

[0142] Additionally, the optical imaging system 400 according to the fourth embodiment may include an aperture stop (not shown), an infrared cutoff filter F, and an image sensor S. In an example, the aperture stop may be disposed between the second lens 402 and the third lens 403.

[0143] Table 7 shows the properties of the optical imaging system according to the fourth embodiment.

[0144] Table 7: Surface number radius of curvature Thickness / Distance Refractive index Abbe number 0 object infinity 1 First lens 2.31 0.948 1.544 56.0 2 8.57 0.161 3 Second lens 11.59 0.279 1.680 18.2 4 5.25 0.294 5 Third lens 17.43 0.363 1.535 55.7 6 71.53 0.122 7 Fourth lens -712.20 0.353 1.614 25.9 8 -69.21 0.117 9 Fifth lens 24.30 0.332 1.567 37.4 10 20.80 0.435 11 Sixth lens 24.14 0.287 1.635 24.0 12 4.53 0.100 13 Seventh Lens 4.11 0.510 1.544 56.0 14 7.04 0.122 15 Eighth lens 2.54 0.491 1.567 37.4 16 13.11 0.975 17 Ninth Lens -20.79 0.289 1.535 55.7 18 2.88 0.250 19 Infrared cut-off filter infinity 0.210 1.5168 64.2 20 infinity 0.391 twenty one image infinity

[0145] Table 8 shows the aspherical surface values ​​of an exemplary optical imaging system according to the fourth embodiment.

[0146] Table 8: 1 2 3 4 5 6 7 8 9 K -1.028 6.897 31.865 5.959 83.414 99.000 99.000 -96.716 22.890 A 0.007 -0.012 -0.036 -0.004 -0.022 -0.024 -0.033 -0.036 -0.059 B 0.040 -0.047 0.116 -0.140 -0.003 -0.032 0.116 0.039 0.045 C -0.203 0.275 -0.556 1.262 0.039 0.244 -0.638 0.036 -0.058 D 0.626 -0.905 2.040 -6.098 -0.293 -0.959 2.403 -0.508 0.035 E -1.255 1.981 -5.103 19.254 1.243 2.273 -6.262 1.658 -0.010 F 1.723 -3.021 8.954 -41.770 -3.322 -3.507 11.413 -3.170 0.051 G -1.669 3.287 -11.274 64.066 5.898 3.598 -14.812 4.039 -0.134 H 1.160 -2.585 10.297 -70.542 -7.164 -2.398 13.846 -3.596 0.164 J -0.580 1.472 -6.824 55.975 6.024 0.930 -9.336 2.274 -0.116 L 0.207 -0.601 3.245 -31.733 -3.489 -0.102 4.495 -1.018 0.052 M -0.052 0.171 -1.078 12.536 1.357 -0.086 -1.506 0.316 -0.014 N 0.008 -0.032 0.237 -3.278 -0.335 0.046 0.333 -0.065 0.002 O -0.001 0.004 -0.031 0.510 0.047 -0.010 -0.044 0.008 0.000 P 0.000 0.000 0.002 -0.036 -0.003 0.001 0.003 0.000 0.000 10 11 12 13 14 15 16 17 18 TO 23,174 46,032 -2.323 -1.070 1,735 -1.013 7,371 9,061 -0.892 AND -0.039 -0.104 -0.150 -0.027 -0.039 -0.044 0.044 -0.071 -0.079 B 0.005 0.123 0.031 -0.148 -0.043 -0.001 -0.022 0.012 0.020 C 0.040 -0.152 0.083 0.270 0.060 0.013 0.010 0.004 -0.003 D -0.159 0.218 -0.080 -0.262 -0.042 -0.012 -0.006 -0.002 0.000 E 0.3069 -0.285 -0.005 0.165 0.019 0.006 0.003 0.000 0.000 F -0.398 0.269 0.059 -0.074 -0.006 -0.002 -0.001 0.000 0.000 G 0.365 -0.177 -0.054 0.024 0.002 0.000 0.000 0.000 0.000 H -0.246 0.082 0.027 -0.006 0.000 0.000 0.000 0.000 0.000 J 0.121 -0.027 -0.009 0.001 0.000 0.000 0.000 0.000 0.000 L -0.043 0.006 0.002 0.000 0.000 0.000 0.000 0.000 0.000 M 0.011 -0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 N -0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 P 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

[0147] Figure 9 shows a configuration diagram of an exemplary optical imaging system according to a fifth embodiment, and Figure 10 shows the aberration curves of the exemplary optical imaging system shown in Figure 9.

[0148] The optical imaging system 500 according to the fifth embodiment may include 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 arranged sequentially from the object side to the imaging side.

[0149] The first lens 501 may have positive refractive power. The first surface of the first lens 501 may be convex in the paraxial region, while the second surface of the first lens may be concave in the paraxial region.

[0150] The second lens 502 may have negative refractive power. The first surface of the second lens 502 may be convex in the paraxial region, while the second surface of the second lens may be concave in the paraxial region.

[0151] The third lens 503 may have negative refractive power. The first surface of the third lens 503 may be concave in the paraxial region, while the second surface of the third lens may be convex in the paraxial region.

[0152] The fourth lens 504 may have negative refractive power, and both the first and second surfaces of the fourth lens 504 may be concave in the paraxial region.

[0153] The fifth lens 505 may have positive refractive power. The first surface of the fifth lens 505 may be convex in the paraxial region, while the second surface of the fifth lens may be concave in the paraxial region.

[0154] The sixth lens 506 may have negative refractive power. The first surface of the sixth lens 506 may be convex in the paraxial region, while the second surface of the sixth lens may be concave in the paraxial region.

[0155] The seventh lens 507 may have positive refractive power. The first surface of the seventh lens 507 may be convex in the paraxial region, while the second surface of the seventh lens may be concave in the paraxial region.

[0156] The eighth lens 508 may have positive refractive power. The first surface of the eighth lens 508 may be convex in the paraxial region, while the second surface of the eighth lens may be concave in the paraxial region.

[0157] The ninth lens 509 may have negative refractive power, and both the first and second surfaces of the ninth lens 509 may be concave in the paraxial region.

[0158] The optical imaging system 500 according to the fifth embodiment may include plastic lenses. In this example, all of the first to ninth lenses may be formed of plastic material.

[0159] Additionally, the optical imaging system 500 according to the fifth embodiment may include an aperture stop (not shown), an infrared cutoff filter F, and an image sensor S. In an example, the aperture stop may be disposed between the second lens 502 and the third lens 503.

[0160] Table 9 shows the properties of an exemplary optical imaging system according to the fifth embodiment.

[0161] Table 9: Surface number radius of curvature Thickness / Distance Refractive index Abbe number 0 object infinity 1 First lens 2.33 0.909 1.544 56.0 2 7.55 0.136 3 Second lens 9.87 0.280 1.680 18.2 4 6.48 0.321 5 Third lens -531.00 0.321 1.535 55.7 6 -725.00 0.100 7 Fourth lens -100.66 0.285 1.680 18.2 8 32.25 0.100 9 Fifth lens 11.47 0.420 1.567 37.4 10 90.38 0.437 11 Sixth lens 74.28 0.280 1.639 23.5 12 5.07 0.100 13 Seventh Lens 4.39 0.444 1.535 55.7 14 6.78 0.137 15 Eighth lens 2.52 0.561 1.567 37.4 16 12.94 0.988 17 Ninth Lens -19.96 0.361 1.535 55.7 18 2.89 0.250 19 Infrared cut-off filter infinity 0.210 1.5168 64.2 20 infinity 0.357 twenty one image infinity

[0162] Table 10 shows the aspherical surface values ​​of an exemplary optical imaging system according to the fifth embodiment.

[0163] Table 10: 1 2 3 4 5 6 7 8 9 K -1.010 6.368 30.944 7.714 -99.000 99.000 99.000 99.000 -15.746 A 0.010 0.000 -0.045 0.002 0.025 -0.041 -0.049 -0.037 -0.076 B 0.028 -0.178 0.190 -0.161 -0.595 0.171 0.326 0.047 0.159 C -0.191 0.969 -0.917 1.354 4.03 -1.134 -1.716 0.008 -0.544 D 0.700 -3.209 3.133 -6.489 -17.41 4.432 5.681 -0.467 1.366 E -1.591 7.155 -7.331 20.647 50.98 -11.474 -12.889 1.666 -2.469 F 2.421 -11.203 12.149 -45.460 -104.63 20.729 20.755 -3.265 3.241 G -2.561 12.611 -14.578 71.046 153.71 -26.836 -24.211 4.173 -3.111 H 1.923 -10.324 12.787 -79.937 -163.42 25.202 20.649 -3.689 2.184 J -1.032 6.149 -8.190 64.970 125.84 -17.185 -12.866 2.305 -1.114 L 0.393 -2.635 3.782 -37.813 -69.45 8.419 5.787 -1.017 0.406 M -0.104 0.791 -1.224 15.371 26.75 -2.886 -1.829 0.311 -0.102 N 0.018 -0.158 0.263 -4.145 -6.83 0.657 0.385 -0.063 0.017 O -0.002 0.019 -0.034 0.666 1.037 -0.089 -0.049 0.007 -0.002 P 0.000 -0.001 0.002 -0.048 -0.071 0.005 0.003 0.000 0.000 10 11 12 13 14 15 16 17 18 K -99.000 -99.000 -2.259 -1.187 1.506 -1.007 6.964 9.952 -0.892 A -0.038 -0.101 -0.168 -0.067 -0.055 -0.035 0.052 -0.075 -0.086 B 0.017 0.126 0.172 0.039 0.007 -0.017 -0.043 0.017 0.026 C 0.027 -0.183 -0.245 -0.080 -0.015 0.026 0.031 0.001 -0.006 D -0.217 0.263 0.324 0.106 0.022 -0.019 -0.018 -0.001 0.001 E 0.534 -0.313 -0.322 -0.082 -0.017 0.008 0.007 0.000 0.000 F -0.782 0.278 0.231 0.041 0.008 -0.002 -0.002 0.000 0.000 G 0.768 -0.179 -0.122 -0.014 -0.003 0.000 0.000 0.000 0.000 H -0.528 0.083 0.048 0.003 0.001 0.000 0.000 0.000 0.000 J 0.258 -0.028 -0.014 -0.001 0.000 0.000 0.000 0.000 0.000 L -0.090 0.006 0.003 0.000 0.000 0.000 0.000 0.000 0.000 M 0.022 -0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 N -0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 P 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

[0164] Figure 11 shows a configuration diagram of an exemplary optical imaging system according to a sixth embodiment, and Figure 12 shows the aberration curves of the exemplary optical imaging system shown in Figure 11.

[0165] The optical imaging system 600 according to the sixth embodiment may include 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 arranged sequentially from the object side to the imaging side.

[0166] The first lens 601 may have positive refractive power. The first surface of the first lens 601 may be convex in the paraxial region, while the second surface of the first lens may be concave in the paraxial region.

[0167] The second lens 602 may have negative refractive power. The first surface of the second lens 602 may be convex in the paraxial region, while the second surface of the second lens may be concave in the paraxial region.

[0168] The third lens 603 may have negative refractive power. The first surface of the third lens 603 may be convex in the paraxial region, while the second surface of the third lens may be concave in the paraxial region.

[0169] The fourth lens 604 may have positive refractive power. The first surface of the fourth lens 604 may be convex in the paraxial region, while the second surface of the fourth lens may be concave in the paraxial region.

[0170] The fifth lens 605 may have positive refractive power. The first surface of the fifth lens 605 may be concave in the paraxial region, while the second surface of the fifth lens may be convex in the paraxial region.

[0171] The sixth lens 606 may have negative refractive power. The first surface of the sixth lens 606 may be convex in the paraxial region, while the second surface of the sixth lens may be concave in the paraxial region.

[0172] The seventh lens 607 may have negative refractive power. The first surface of the seventh lens 607 may be convex in the paraxial region, while the second surface of the seventh lens may be concave in the paraxial region.

[0173] The eighth lens 608 may have positive refractive power, and the first surface of the eighth lens 608 may be convex in the paraxial region, while the second surface of the eighth lens may be concave in the paraxial region.

[0174] The ninth lens 609 may have negative refractive power. The first surface of the ninth lens 609 may be convex in the paraxial region, while the second surface of the ninth lens may be concave in the paraxial region.

[0175] The optical imaging system 600 according to the sixth embodiment may include plastic lenses. In this example, all of the first to ninth lenses may be formed of plastic material.

[0176] Additionally, the optical imaging system 600 according to the sixth embodiment may include an aperture stop (not shown), an infrared cutoff filter F, and an image sensor S. In an example, the aperture stop may be disposed between the second lens 602 and the third lens 603.

[0177] Table 11 shows the properties of an exemplary optical imaging system according to the sixth embodiment.

[0178] Table 11: Surface number radius of curvature Thickness / Distance Refractive index Abbe number 0 object infinity 1 First lens 2.42 1.078 1.544 56.0 2 13.27 0.095 3 Second lens 13.84 0.292 1.680 18.2 4 5.94 0.265 5 Third lens 946.99 0.289 1.671 19.2 6 230.28 0.100 7 Fourth lens 10.30 0.341 1.614 25.9 8 10.28 0.100 9 Fifth lens -30.79 0.341 1.567 37.4 10 -12.29 0.108 11 Sixth lens 11.60 0.298 1.680 18.2 12 10.23 0.483 13 Seventh Lens 37.31 0.300 1.614 25.9 14 9.21 0.284 15 Eighth lens 3.75 0.684 1.567 37.4 16 31.06 0.842 17 Ninth Lens 10.84 0.301 1.535 55.7 18 2.32 0.500 19 Infrared cut-off filter infinity 0.110 1.5168 64.2 20 infinity 0.275 twenty one image infinity

[0179] Table 12 shows the aspherical surface values ​​of an exemplary optical imaging system according to the sixth embodiment.

[0180] Table 12: 1 2 3 4 5 6 7 8 9 K -0.503 21.664 42.075 3.436 -72.329 55.993 -50.484 -20.656 70.140 A -0.010 0.005 0.026 -0.008 0.001 0.000 -0.013 -0.014 -0.032 B 0.066 -0.038 -0.222 0.063 0.000 0.000 -0.044 -0.012 0.285 C -0.130 0.341 1.193 -0.218 0.000 -0.032 0.122 -0.081 -1.202 D 0.066 -1.354 -3.795 0.376 -0.001 0.194 -0.272 0.402 3.050 E 0.220 3.023 7.711 -0.085 0.003 -0.632 0.561 -0.925 -5.033 F -0.542 -4.307 -10.576 -1.084 -0.008 1.358 -1.046 1.093 5.415 G 0.621 4.173 10.140 2.698 0.012 -2.042 1.561 -0.419 -3.601 H -0.443 -2.843 -6.926 -3.543 -0.014 2.193 -1.724 -0.627 1.101 J 0.213 1.379 3.387 2.998 0.012 -1.690 1.366 1.123 0.351 L -0.070 -0.475 -1.176 -1.711 -0.007 0.926 -0.761 -0.874 -0.550 M 0.016 0.113 0.283 0.657 0.003 -0.352 0.291 0.402 0.278 N -0.002 -0.018 -0.045 -0.163 -0.001 0.088 -0.073 -0.112 -0.077 O 0.000 0.002 0.004 0.024 0.000 -0.013 0.011 0.018 0.012 P 0.000 0.000 0.000 -0.002 0.000 0.001 -0.001 -0.001 -0.001 10 11 12 13 14 15 16 17 18 K 0.509 48.261 -7.361 96.695 -62.948 -17.829 -42.265 0.880 -11.822 A 0.003 -0.040 -0.032 -0.080 -0.124 -0.012 -0.008 -0.211 -0.110 B -0.086 -0.041 0.006 0.041 0.105 -0.019 0.016 0.140 0.067 C 0.521 0.130 -0.052 0.103 -0.084 0.034 -0.018 -0.068 -0.028 D -1.783 -0.125 0.228 -0.372 0.046 -0.037 0.010 0.024 0.008 E 3.865 -0.474 -0.589 0.594 -0.012 0.025 -0.005 -0.006 -0.002 F -5.668 1.926 0.959 -0.589 -0.004 -0.011 0.002 0.001 0.000 G 5.860 -3.426 -1.035 0.395 0.006 0.003 -0.001 0.000 0.000 H -4.379 3.738 0.767 -0.185 -0.003 -0.001 0.000 0.000 0.000 J 2.391 -2.717 -0.396 0.061 0.001 0.000 0.000 0.000 0.000 L -0.951 1.348 0.142 -0.014 0.000 0.000 0.000 0.000 0.000 M 0.270 -0.452 -0.035 0.002 0.000 0.000 0.000 0.000 0.000 N -0.052 0.098 0.006 0.000 0.000 0.000 0.000 0.000 0.000 O 0.006 -0.013 -0.001 0.000 0.000 0.000 0.000 0.000 0.000 P 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000

[0181] Table 13 shows the properties of the exemplary optical imaging systems according to the first to sixth embodiments.

[0182] Table 13: Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 f 5.7 5.7 5.6 5.7 5.6 5.9 f1 5.7 5.6 5.6 5.5 5.8 5.2 f2 -16.9 -14.7 -16.6 -14.2 -28.4 -15.4 f3 33.8 52.8 28.3 42.8 -3700.2 -448.3 f4 -33.2 1012.1 -50.3 123.9 -35.5 1621.0 f5 39.4 63.6 -855.1 -262.4 23.0 35.6 f6 -11.9 -8.4 -11.0 -8.8 -8.5 -138.3 f7 42.8 19.2 26.7 17.1 21.9 -19.8 f8 5.5 5.4 5.3 5.4 5.4 7.4 f9 -4.7 -4.7 -4.7 -4.7 -4.7 -5.6 TTL 7.0 7.0 6.9 7.0 7.0 7.1 BFL 0.9 0.9 0.8 0.9 0.8 0.9 IMH 6.0 6.0 6.0 6.0 6.0 6.0 FOV 89.2 89.2 90.3 89.3 90.3 87.8 F number 1.69 1.68 1.68 1.68 1.71 1.61

[0183] Although the exemplary optical imaging system according to the embodiment has a thin thickness, the optical imaging system can also achieve high-resolution images.

[0184] Furthermore, the exemplary optical imaging system according to the embodiments can acquire bright or high-resolution images and videos by having a low F-value.

[0185] Although this disclosure includes specific examples, it will be apparent to those skilled in the art, upon understanding the disclosure of this application, that various changes in form and detail may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein should be considered illustrative only and not for limiting purposes. Descriptions of features or manner in each example should be considered applicable to similar features or manner in other examples. Suitable results may also be achieved if the described technology is implemented in a different order, and / or if components in the described system, architecture, apparatus, or circuit are combined in different ways and / or replaced or supplemented by other components or their equivalents.

[0186] Therefore, in addition to the above disclosure, the scope of this disclosure may also be defined by the scope of the patent application and its equivalents, and all variations within the scope of the patent application and its equivalents should be interpreted as being included in this disclosure.

[0187] 100, 200, 300, 400, 500, 600: Optical Imaging System 101, 201, 301, 401, 501, 601: First lens 102, 202, 302, 402, 502, 602: Second lens 103, 203, 303, 403, 503, 603: Third lens 104, 204, 304, 404, 504, 604: Fourth lens 105, 205, 305, 405, 505, 605: Fifth lens 106, 206, 306, 406, 506, 606: Sixth lens 107, 207, 307, 407, 507, 607: Seventh Lens 108, 208, 308, 408, 508, 608: Eighth lens 109, 209, 309, 409, 509, 609: Ninth Lens F: Infrared cut-off filter S: Image sensor

Claims

1. An optical imaging system, comprising: The first lens has positive refractive power; The second lens has a negative refractive force; The third lens has refractive power; the fourth lens has refractive power. The fifth lens has a convex object-side surface; the sixth lens has negative refractive power. The seventh lens has positive refractive power; the eighth lens has positive refractive power. The system includes a ninth lens with negative refractive power, wherein the first lens to the ninth lens are arranged sequentially at intervals from the object side; the optical imaging system comprises nine lenses, satisfying the following conditions: 2.3 < T1 / T9 < 3.8 and 9 (mm -1) < v1 / f1 < 11 (mm -1), where T1 is the thickness of the first lens at the center of the optical axis, T9 is the thickness of the ninth lens at the center of the optical axis, v1 is the Abbe number of the first lens, and f1 is the focal length of the first lens.

2. The optical imaging system as claimed in claim 1, wherein the optical imaging system satisfies the following conditional expression: 18 < v1 - v5 < 31, where v5 is the Abbe number of the fifth lens.

3. The optical imaging system as claimed in claim 1, wherein the sixth lens has a convex object-side surface.

4. The optical imaging system of claim 1, wherein the seventh lens has a concave image-side surface.

5. The optical imaging system of claim 1, wherein the ninth lens has a concave object-side surface.

6. The optical imaging system of claim 1, wherein the third lens has a convex image-side surface.

7. The optical imaging system of claim 1, wherein the optical imaging system satisfies the following conditional expression: 2.5 < TTL / ΣAT < 2.8, where TTL is the distance from the object-side surface of the first lens to the image plane, and ΣAT is the sum of the optical axis intervals from the first lens to the ninth lens.

8. The optical imaging system of claim 1, wherein the optical imaging system satisfies the following conditional expression: 1.7 < TTL / ΣCT < 1.9, where TTL is the distance from the object-side surface of the first lens to the image plane, and ΣCT is the sum of the optical axis thicknesses of the first lens to the ninth lens.

9. The optical imaging system of claim 1, wherein the optical imaging system satisfies the following conditional expression: 1.4 < ΣCT / ΣAT < 1.6, where ΣCT is the sum of the optical axis thicknesses of the first lens to the ninth lens, and ΣAT is the sum of the optical axis spacings of the first lens to the ninth lens.

10. The optical imaging system of claim 1, wherein the third lens has a positive refractive power.

11. The optical imaging system of claim 1, wherein the optical imaging system satisfies the following condition: BFL / f < 0.16, where BFL is the distance from the image-side surface of the ninth lens to the image plane, and f is the focal length of the optical imaging system.

12. The optical imaging system of claim 1, wherein the fourth lens has a convex image-side surface.

13. The optical imaging system of claim 1, wherein the fifth lens has a concave image-side surface.

14. The optical imaging system of claim 1, wherein the fourth lens has a concave object-side surface.

Images