Optical imaging system and electronic device

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, a ninth lens and a tenth lens arranged in sequence from an object side to an imaging side. In the optical imaging system, the second lens has negative refractive power. The optical imaging system satisfies the following conditional expressions: TTL / (2*ImgHT)<0.66 and 0<f9 / f<2.0. In the conditional expressions, TTL is the distance from the object-side surface of the first lens to the image plane, ImgHT is the height of the image plane, f is the focal length of the optical imaging system, and f9 is the focal length of the ninth lens.

Description

Optical Imaging System [Cross - Reference to Related Applications] This application claims the benefit of priority of Korean Patent Application No. 10 - 2023 - 0003185, filed with the Korean Intellectual Property Office on January 10, 2023, the entire disclosure of which is incorporated herein by reference for all purposes. The following description relates to an optical imaging system. A portable electronic device may include a camera module for capturing images or recording videos. For example, the camera module may be installed on devices such as, but not limited to, mobile phones, laptop computers, or game consoles. The resolution of the camera module may be affected by the optical properties of the optical imaging system and the illuminance at the imaging position. For example, high - resolution imaging may be achieved in bright lighting positions or areas. However, it may be difficult to achieve high - resolution imaging in dark lighting positions or areas. Therefore, it may be beneficial to implement an optical imaging system with a low f - number to enable high - resolution imaging even in dark positions or areas. The above information is provided only as background information to assist in understanding the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above constitutes prior art to the present disclosure. This invention content is provided to introduce a series of concepts further described below in the embodiments in a simplified form. This invention content is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to help determine the scope of the claimed subject matter. 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, a ninth lens, and a tenth lens, wherein the second lens has a negative refractive power, wherein the first lens to the tenth lens are arranged in order from the object side to the imaging side, and wherein TTL / (2*ImgHT) < 0.66, and 0 < f9 / f < 2.0, where TTL is the distance from the object - side surface of the first lens to the image plane, ImgHT is the height of the image plane, f is the focal length of the optical imaging system, and f9 is the focal length of the ninth lens. The optical imaging system may satisfy - 1.0 < f1 / f3 < - 0.01, where f1 is the focal length of the first lens and f3 is the focal length of the third lens. The optical imaging system may satisfy 0 < BFL / f < 0.3, where BFL is the distance from the image - side surface of the tenth lens to the image plane. The optical imaging system can satisfy 0 < D12 / f < 0.3, where D12 is the distance from the image-side surface of the first lens to the object-side surface of the second lens. The optical imaging system can satisfy 70° < FOV*ImgHT / f, where FOV is the viewing angle of the optical imaging system. The optical imaging system can satisfy 0.30 mm < SmT23 < 0.80 mm, where SmT23 is the sum of the thickness of the second lens and the thickness of the third lens. The optical imaging system can satisfy 0.50 mm < SmT3456 < 1.50 mm, where SmT3456 is the sum of the respective thicknesses of the third lens, the fourth lens, the fifth lens, and the sixth lens. The optical imaging system can satisfy 0 < SmT23 / TTL < 0.10, where SmT23 is the sum of the thickness of the second lens and the thickness of the third lens. The optical imaging system can satisfy 0.9 < f2 / f9 < 1.20, where f2 is the focal length of the second lens. 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, a ninth lens, and a tenth lens, which are arranged in sequence from the object side to the imaging side, where the second lens has a negative refractive power, the third lens has a negative refractive power, the fifth lens has a positive refractive power, and the eighth lens has a convex object-side surface. The optical imaging system can satisfy 0.8 < f1 / R3 < 1.2, where f1 is the focal length of the first lens, and R3 is the radius of curvature of the object-side surface of the second lens. The optical imaging system can satisfy 7.10 < (R2+R3) / R1 < 7.60, where R1 is the radius of curvature of the object-side surface of the first lens, R2 is the radius of curvature of the image-side surface of the first lens, and R3 is the radius of curvature of the object-side surface of the second lens. The optical imaging system can satisfy 1.50 < (R3+R4) / f1 < 1.80, where f1 is the focal length of the first lens, R3 is the radius of curvature of the object-side surface of the second lens, and R4 is the radius of curvature of the image-side surface of the second lens. The optical imaging system can satisfy 0.90 < (R3+R4) / R6 < 1.20, where R3 is the radius of curvature of the object-side surface of the second lens, R4 is the radius of curvature of the image-side surface of the second lens, and R6 is the radius of curvature of the image-side surface of the third lens. The optical imaging system satisfies 2.10 < (R17 + R18) / f9 < 2.40, where f9 is the focal length of the ninth lens, R17 is the radius of curvature of the object-side surface of the ninth lens, and R18 is the radius of curvature of the image-side surface of the ninth lens. The optical imaging system satisfies 1.30 < (R18 - R17) / f9 < 1.60, where f9 is the focal length of the ninth lens, R17 is the radius of curvature of the object-side surface of the ninth lens, and R18 is the radius of curvature of the image-side surface of the ninth lens. 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, a ninth lens, and a tenth lens, where the first lens to the tenth lens are sequentially arranged from the object side to the imaging side, and where 2.0 < f7 / f < 15 and TTL / (2*ImgHT) < 0.66, where TTL is the distance from the object-side surface of the first lens to the image plane, ImgHT is the height of the image plane, f is the focal length of the optical imaging system, and f7 is the focal length of the seventh lens. Other features and examples will become apparent by reading the following detailed description, drawings, and claims. The following detailed description is provided to assist the reader in obtaining a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalent forms of the methods, devices, and / or systems described herein will become apparent after understanding the disclosure of this application. For example, the order and / or sequence of operations within the operations described herein are merely examples and are not intended to be limited to the order and / or sequence of operations within the operations described herein, but rather, as will be apparent after understanding the disclosure of this application, the order and / or sequence of operations within the operations may be changed, except for the order and / or sequence of operations within the operations that must occur in a specific order. As another example, the order of operations and / or the sequence of operations within the operations may be implemented in parallel, except for at least a portion of the order of operations and / or the sequence of operations within the operations that must occur in a particular order (e.g., a specific order). Additionally, descriptions of known features may be omitted after understanding the disclosure of this application to improve clarity and conciseness. The features described herein can be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, apparatuses, and / or systems described herein that will be apparent after understanding the disclosure of this application. The term "may" as used herein with respect to an example or embodiment (e.g., with respect to what an example or embodiment may include or implement) means that there is 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, e.g., the phrases "in one example" and "in one embodiment" have the same meaning, and "one or more examples" and "in one or more embodiments" have the same meaning. The terms used herein are for the purpose of describing various examples only and are not intended to limit the disclosure. Unless the context clearly indicates otherwise, the articles "a," "an," and "the" are intended to include the plural forms as well. The phrase "and / or" as used herein includes any one and any combination of two or more of the associated listed items. As a non-limiting example, the terms "comprise," "comprises," "include," "includes," "have," and "has" specify 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 alternative presence of the stated features, numbers, operations, components, elements, and / or combinations thereof. Additionally, although an embodiment may state such terms as "comprise," "comprises," "include," "includes," "have," and "has" to specify the presence of the stated features, numbers, operations, components, elements, and / or combinations thereof, there may also be other embodiments in which one or more of the stated features, numbers, operations, components, elements, and / or combinations thereof are absent. Throughout the 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 can be directly "on" the other component, element, or layer (e.g., in contact with the other component, element, or layer), directly "connected to", directly "coupled to", or directly "joined to" the other component, element, or layer, or there can reasonably be one or more other components, elements, or layers therebetween. 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 there are no other components, elements, or layers therebetween. Similarly, expressions such as "between" and "immediately between" and "adjacent to" and "immediately adjacent to" can be interpreted in the foregoing manner. Although terms such as "first", "second", and "third" or A, B, (a), (b), etc. may be used herein to describe various components, assemblies, regions, layers, or sections, such components, assemblies, regions, layers, or sections are not limited by these terms. None of these terms is used to define, for example, the nature, order, or sequence of the corresponding component, assembly, region, layer, or section, but rather is only used to distinguish the corresponding component, assembly, region, layer, or section from other components, assemblies, regions, layers, or sections. Thus, without departing from the teachings of the examples, a component, assembly, region, layer, or section described as the first component, assembly, region, layer, or section in the examples herein could also be referred to as the second component, assembly, region, layer, or section. As used herein, the phrase "and / or" includes any one and any combination of two or more of the associated listed items. Unless the corresponding description and examples necessarily interpret such a listing (e.g., "at least one of A, B, and C") 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 disjunctive meaning, and such phrases "at least one of A, B, and C", "at least one of A, B, or C", etc. also include instances where there may be one or more of each of A, B, and / or C (e.g., any combination of one or more of each of A, B, and C). Unless otherwise defined, all terms (including technical and scientific terms) used herein shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains in the context of a particular understanding of the disclosure of this application. For example, terms such as those defined in common dictionaries shall be interpreted to have a meaning consistent with their meaning in the context of the relevant art of this application and specifically in the context of the disclosure of this application, and shall not be interpreted to have an idealized or overly formal meaning unless explicitly defined herein. As used herein with respect to examples or embodiments, the term "can" (e.g., with respect to what an example or embodiment can include or implement) means that there is at least one example or embodiment that includes or implements such a feature, and not all examples are limited thereto. One or more examples can provide high-quality images even in low-light environments. One or more examples can provide an optical imaging system that implements high-resolution imaging even in low-light environments. One or more examples can provide an optical imaging system that has a wide viewing angle while having a low f-number. In the one or more examples, the first lens refers to the lens closest to the object (or subject), and the tenth lens refers to the lens closest to the image plane (or image sensor). In the one or more examples, the unit of the radius of curvature, thickness, total track length (TTL) (the distance from the object-side surface of the first lens to the image plane), image height (ImgHT) (the height of the image plane), and focal length of the lens can all be indicated in "millimeters (mm)". The thickness of the lens, the distance between lenses, and the TTL can be sizes calculated based on the optical axis of the optical imaging system. Additionally, in the description of the lens shape in the one or more examples, a surface that is convex means that the paraxial region of the surface is convex, and a surface that is concave means that the paraxial region of the surface is concave. Therefore, even when it is stated that one surface of the lens is convex, the edge portion of the lens can be concave. Similarly, even when it is stated that one surface of the lens is concave, the edge portion of the lens can be convex. The optical imaging system described herein can be installed on a portable electronic device. For example, by way of example only, the optical imaging system can be installed on a smartphone, laptop computer, augmented reality device, virtual reality (VR) device, portable game console, and similar devices. However, the scope of use and examples of use of the optical imaging system described herein are not limited to the above electronic devices. For example, the optical imaging system can be applied to electronic devices that provide a narrow installation space but require high-resolution imaging. The optical imaging system according to the first example may include a plurality of lenses. For 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, a ninth lens, and a tenth lens sequentially arranged from the object side to the imaging side. The optical imaging system according to the first example may include a lens having a negative refractive power. For example, in the optical imaging system according to the first example, the second lens may have a negative refractive power. The optical imaging system according to the first example may satisfy a specific conditional expression. For example, the optical imaging system according to the first example may satisfy the following conditional expression: TTL / (2*ImgHT) < 0.66 and 0 < f9 / f < 2.0. In the conditional expression, TTL may be the distance from the object-side surface of the first lens to the image plane, ImgHT may be the height of the image plane, f may be the focal length of the optical imaging system, and f9 may be the focal length of the ninth lens. The optical imaging system according to the second example may include a plurality of lenses. For example, the optical imaging system according to the second example 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, a ninth lens, and a tenth lens sequentially arranged from the object side to the imaging side. The optical imaging system according to the second example may include a lens having a negative refractive power. For example, in the optical imaging system according to the second example, the second lens and the third lens may have a negative refractive power. The optical imaging system according to the second example may include a lens having a positive refractive power. For example, in the optical imaging system according to the second example, the fifth lens may have a positive refractive power. The optical imaging system according to the second example may include a lens having a convex object-side surface. For example, in the optical imaging system according to the second example, the eighth lens may have a convex object-side surface. The optical imaging system according to the third example 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, a ninth lens, and a tenth lens sequentially arranged from the object side to the imaging side, and may satisfy one or more of the following conditional expressions. 0 < f1 / f < 1.40 25 < V1-V2 < 45 0 ≤ V3-V2 < 45 10 < V1-(V6+V6) / 2 < 30 -10 < f2 / f < -1.0 1.0 < |f3 / f| < 35 3.0 < |f5 / f| < 20 -10 < f6 / f < -1.0 2.0 < f7 / f < 15 0 < f9 / f < 2.0 -1.0 < f10 / f < 0 TTL / f < 1.30 -1.0 < f1 / f2 < 0 -1.0 < f1 / f3 < -0.01 0 < BFL / f < 0.30 0 < D12 / f < 0.30 TTL / (2*ImgHT) < 0.66 70° < FOV*ImgHT / f 0.3 mm < SmT23 < 0.80 mm 0.5 mm < SmT3456 < 1.50 mm 0 < SmT23 / TTL < 1.20 0.9 < f2 / f6 < 1.20 In the above conditional expressions, f may be the focal length of the optical imaging system, f1 may be the focal length of the first lens, f2 may be the focal length of the second lens, f3 may be the focal length of the third lens, f5 may be the focal length of the fifth lens, f6 may be the focal length of the sixth lens, f7 may be the focal length of the seventh lens, f9 may be the focal length of the ninth lens, f10 may be the focal length of the tenth lens, V1 may be the Abbe number of the first lens, V2 may be the Abbe number of the second lens, V3 may be the Abbe number of the third lens, V6 may be the Abbe number of the sixth lens, V7 may be the Abbe number of the seventh lens, TTL may be the distance from the object-side surface of the first lens to the image plane, BFL may be the distance from the image-side surface of the tenth lens to the image plane, D12 may be the distance from the image-side surface of the first lens to the object-side surface of the second lens, ImgHT may be the height of the image plane, FOV may be the viewing angle of the optical imaging system, SmT23 may be the sum of the thicknesses of the second lens and the third lens, and SmT3456 may be the sum of the thicknesses of the third lens to the sixth lens. The optical imaging system according to the fourth example 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, a ninth lens, and a tenth lens sequentially arranged from the object side to the imaging side, and may satisfy one or more of the following conditional expressions. 0.6 < f1 / f9 < 1.0 0.9 < f5 / f7 < 1.50 -2.0 < f9 / f10 < -1.20 -3.0 < (f1 + f7) / (f2 + f6) < -0.8 1.0 < R17 / R20 < 1.50 0.50 < |R20 / f10| < 0.60 1.20 < f6 / R11 < 1.40 -0.30 < f6 / R12 < -0.10 1.4 < f6 / R11 - f6 / R12 < 1.6 In the above conditional expressions, R11 may be the radius of curvature of the object-side surface of the sixth lens, R12 may be the radius of curvature of the image-side surface of the sixth lens, R17 may be the radius of curvature of the object-side surface of the ninth lens, and R20 may be the radius of curvature of the image-side surface of the tenth lens. The optical imaging system according to the fifth example 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, a ninth lens, and a tenth lens sequentially arranged from the object side, and may satisfy one or more of the following conditional expressions. 0.80 < f1 / R3 < 1.20 7.10 < (R2 + R3) / R1 < 7.60 1.50 < (R3 + R4) / f1 < 1.80 0.90 < (R3 + R4) / R6 < 1.20 -7.0 < f3 / R5 < -3.0 -8.0 < f3 / R6 < -5.0 2.10 < (R17 + R18) / f9 < 2.40 1.30 < (R18 - R17) / f9 < 1.60 In the above conditional expressions, R1 may be the radius of curvature of the object-side surface of the first lens, R2 may be the radius of curvature of the image-side surface of the first lens, R3 may be the radius of curvature of the object-side surface of the second lens, R4 may be the radius of curvature of the image-side surface of the second lens, and R5 may be the radius of curvature of the object-side surface of the third lens, R6 may be the radius of curvature of the image-side surface of the third lens, and R18 may be the radius of curvature of the image-side surface of the ninth lens. The optical imaging system according to the sixth example may include, while including the features according to the first example, one or more of the features according to the third example to the fifth example. The optical imaging system according to the seventh example may include, while including the features according to the second example, one or more of the features according to the third example to the fifth example. The optical imaging system according to the eighth example 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, a ninth lens, and a tenth lens sequentially arranged from the object side to the imaging side, and may simultaneously include two or more of the features according to the third example, the features according to the fourth example, and the features according to the fifth example. As an example, the optical imaging system according to the eighth example may simultaneously satisfy one or more of the conditional expressions according to the third example and one or more of the conditional expressions according to the fourth example while including the first lens to the tenth lens. As another example, the optical imaging system according to the eighth example may simultaneously satisfy one or more of the conditional expressions according to the third example and one or more of the conditional expressions according to the fifth example while including the first lens to the tenth lens. As another example, the optical imaging system according to the eighth example may simultaneously satisfy one or more of the conditional expressions according to the fourth example and one or more of the conditional expressions according to the fifth example while including the first lens to the tenth lens. The optical imaging systems according to the first to eighth examples may include one or more lenses having the following features as needed. As an example, the optical imaging system according to the first example may include one of the first lens to the tenth lens having the following features. As another example, the optical imaging system according to the second example may include two or more of the first lens to the tenth lens having the following features. However, the optical imaging systems according to the above examples may not necessarily include lenses having the following features. Hereinafter, the features of the first lens to the tenth lens will be described. The first lens may have a refractive power. For example, the first lens may have a positive refractive power. One surface of the first lens may be convex. For example, the object-side surface of the first lens may be convex. The first lens may have a spherical surface or an aspherical surface. As an example, both surfaces of the first lens may be aspherical surfaces. The first lens may be formed of a material having a high light transmittance and excellent processability. For example, the first lens may be formed of a plastic material or a glass material. The first lens may have a predetermined refractive index. As an example, the refractive index of the first lens may be less than 1.6. As a specific example, the refractive index of the first lens may be greater than 1.52 and less than 1.57. The first lens may have a predetermined Abbe number. As an example, the Abbe number of the first lens may be less than 60. As a specific example, the Abbe number of the first lens may be greater than 53 and less than 58. The second lens may have a refractive power. For example, the second lens may have a negative refractive power. One surface of the second lens may be convex. For example, the object-side surface of the second lens may be convex. The second lens may have a spherical surface or an aspherical surface. As an example, both surfaces of the second lens may be aspherical surfaces. The second lens may be formed of a material having a high light transmittance and excellent workability. For example, the second lens may be formed of a plastic material or a glass material. The second lens may have a predetermined refractive index. As an example, the refractive index of the second lens may be greater than 1.6. As a specific example, the refractive index of the second lens may be greater than 1.60 and less than 1.70. The second lens may have a predetermined Abbe number. As an example, the Abbe number of the second lens may be less than 30. As a specific example, the Abbe number of the second lens may be greater than 16 and less than 24. The third lens may have a refractive power. For example, the third lens may have a positive refractive power or a negative refractive power. One surface of the third lens may be convex. For example, the object-side surface of the third lens may be convex. The third lens may have a spherical surface or an aspherical surface. As an example, both surfaces of the third lens may be aspherical surfaces. The third lens may be formed of a material having a high light transmittance and excellent workability. For example, the third lens may be formed of a plastic material or a glass material. The third lens may have a predetermined refractive index. As an example, the refractive index of the third lens may be less than 1.5. As a specific example, the refractive index of the third lens may be greater than 1.5 and less than 1.7. The third lens may have a predetermined Abbe number. As an example, the Abbe number of the third lens may be less than 60. The fourth lens may have a refractive power. For example, the fourth lens may have a positive refractive power. One side surface of the fourth lens may be convex. For example, the object-side surface of the fourth lens may be convex. The fourth lens may have a spherical surface or an aspherical surface. As an example, both surfaces of the fourth lens may be aspherical surfaces. The fourth lens may be formed of a material having a high light transmittance and excellent workability. For example, the fourth lens may be formed of a plastic material or a glass material. The fourth lens may have a predetermined refractive index. As an example, the refractive index of the fourth lens may be less than 1.6. As a specific example, the refractive index of the fourth lens may be greater than 1.5 and less than 1.6. The fourth lens may have a predetermined Abbe number. As an example, the Abbe number of the fourth lens may be 50 or greater than 50. As a specific example, the Abbe number of the fourth lens may be greater than 50 and less than 60. The fifth lens may have a refractive power. For example, the fifth lens may have a positive refractive power. One surface of the fifth lens may be concave. As an example, the object-side surface of the fifth lens may be concave. The fifth lens may have a spherical surface or an aspherical surface. As an example, both surfaces of the fifth lens may be aspherical surfaces. The fifth lens may be formed of a material having a high light transmittance and excellent processability. For example, the fifth lens may be formed of a plastic material or a glass material. The fifth lens may have a predetermined refractive index. As an example, the refractive index of the fifth lens may be greater than 1.6. As a specific example, the refractive index of the fifth lens may be greater than 1.65 and less than 1.70. The fifth lens may have a predetermined Abbe number. As an example, the Abbe number of the fifth lens may be less than 30. As a specific example, the Abbe number of the fifth lens may be greater than 16 and less than 24. The sixth lens may have a refractive power. For example, the sixth lens may have a negative refractive power. One surface of the sixth lens may be concave. For example, the object-side surface of the sixth lens may be concave. The sixth lens may have a spherical surface or an aspherical surface. As an example, both surfaces of the sixth lens may be aspherical surfaces. The sixth lens may be formed of a material having a high light transmittance and excellent processability. For example, the sixth lens may be formed of a plastic material or a glass material. The sixth lens may have a predetermined refractive index. As an example, the refractive index of the sixth lens may be greater than 1.6. As a specific example, the refractive index of the sixth lens may be greater than 1.65 and less than 1.70. The sixth lens may have a predetermined Abbe number. As an example, the Abbe number of the sixth lens may be less than 30. As a specific example, the Abbe number of the sixth lens may be greater than 16 and less than 28. The seventh lens may have a refractive power. For example, the seventh lens may have a positive refractive power. One surface of the seventh lens may be convex. For example, the object-side surface of the seventh lens may be convex. The seventh lens may have a spherical surface or an aspherical surface. As an example, both surfaces of the seventh lens may be aspherical surfaces. One surface or both surfaces of the seventh lens may have an inflection point. For example, both the object-side surface and the image-side surface of the seventh lens may have an inflection point. The seventh lens may be formed of a material having a high light transmittance and excellent processability. For example, the seventh lens may be formed of a plastic material or a glass material. The seventh lens may have a predetermined refractive index. As an example, the refractive index of the seventh lens may be greater than 1.52. As a specific example, the refractive index of the seventh lens may be greater than 1.52 and less than 1.64. The seventh lens may have a predetermined Abbe number. As an example, the Abbe number of the seventh lens may be less than 60. As a specific example, the Abbe number of the seventh lens may be greater than 50 and less than 60. The eighth lens may have a refractive power. For example, the eighth lens may have a negative refractive power. One surface of the eighth lens may be convex. For example, the object-side surface of the eighth lens may be convex. The eighth lens may have a spherical surface or an aspherical surface. As an example, both surfaces of the eighth lens may be aspherical surfaces. One surface or both surfaces of the eighth lens may have an inflection point. For example, both the object-side surface and the image-side surface of the eighth lens may have an inflection point. The eighth lens may be formed of a material having a high light transmittance and excellent workability. For example, the eighth lens may be formed of a plastic material or a glass material. The eighth lens may have a predetermined refractive index. As an example, the refractive index of the eighth lens may be less than 1.6. As a specific example, the refractive index of the eighth lens may be greater than 1.54 and less than 1.60. The eighth lens may have a predetermined Abbe number. As an example, the Abbe number of the eighth lens may be less than 40. As a specific example, the Abbe number of the eighth lens may be greater than 20 and less than 40. The ninth lens may have a refractive power. For example, the ninth lens may have a positive refractive power. One surface of the ninth lens may be convex. For example, the object-side surface of the ninth lens may be convex. The ninth lens may have a spherical surface or an aspherical surface. As an example, both surfaces of the ninth lens may be aspherical surfaces. One surface or both surfaces of the ninth lens may have an inflection point. For example, both the object-side surface and the image-side surface of the ninth lens may have an inflection point. The ninth lens may be formed of a material having a high light transmittance and excellent workability. For example, the ninth lens may be formed of a plastic material or a glass material. The ninth lens may have a predetermined refractive index. As an example, the refractive index of the ninth lens may be greater than 1.52. As a specific example, the refractive index of the ninth lens may be greater than 1.50 and less than 1.60. The ninth lens may have a predetermined Abbe number. As an example, the Abbe number of the ninth lens may be less than 60. As a specific example, the Abbe number of the ninth lens may be greater than 50 and less than 60. The tenth lens may have a refractive power. For example, the tenth lens may have a negative refractive power. One surface of the tenth lens may be concave. For example, the object-side surface of the tenth lens may be concave. The tenth lens may have a spherical surface or an aspherical surface. As an example, both surfaces of the tenth lens may be aspherical surfaces. One surface or both surfaces of the tenth lens may have an inflection point. For example, both the object-side surface and the image-side surface of the tenth lens may have an inflection point. The tenth lens may be formed of a material having a high light transmittance and excellent workability. For example, the tenth lens may be formed of a plastic material or a glass material. The tenth lens may have a predetermined refractive index. As an example, the refractive index of the tenth lens may be greater than 1.52. As a specific example, the refractive index of the tenth lens may be greater than 1.50 and less than 1.60. The tenth lens may have a predetermined Abbe number. As an example, the Abbe number of the tenth lens may be less than 60. As a specific example, the Abbe number of the tenth lens may be greater than 50 and less than 60. As described above, the first lens to the tenth lens may have a spherical surface or an aspherical surface. When the first lens to the tenth lens have an aspherical surface, the aspherical surface of the corresponding lens may be represented by Equation 1 below. Equation 1: In Equation 1, c may be the reciprocal of the radius of curvature of the corresponding lens, k may be the conic constant, r may be the distance from an arbitrary point on the aspherical surface to the optical axis, A to H and J may be aspherical constants, and Z (or sag) may be the height in the optical axis direction from an arbitrary point on the aspherical surface to the vertex of the aspherical surface. The optical imaging system according to the above exemplary embodiment or the above example may further include an aperture and a filter. As an example, the optical imaging system may further include an aperture disposed on the object side of the first lens or disposed between the second lens and the third lens. As another example, the optical imaging system may further include a filter disposed between the eighth lens and the image plane. The aperture may be configured to adjust the amount of light incident in the direction of the image plane, and the filter may be configured to block light having a specific wavelength. For reference, the filter described herein may be configured to block infrared rays, but the light having the wavelength blocked by the filter is not limited to infrared rays. Specific exemplary embodiments of the optical imaging system will be described with reference to the drawings. First, an exemplary optical imaging system according to a first exemplary embodiment will be described with reference to FIG. 1. Referring to FIG. 1, the exemplary 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, a ninth lens 109, and a tenth lens 110. The first lens 101 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The second lens 102 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The third lens 103 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The fourth lens 104 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The fifth lens 105 may have a positive refractive power and may have a concave object-side surface and a convex image-side surface. The sixth lens 106 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. The seventh lens 107 may have a positive refractive power and may have a convex object-side surface and a convex image-side surface. Additionally, both the object-side surface and the image-side surface of the seventh lens 107 may have inflection points. The eighth lens 108 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the eighth lens 108 may have inflection points. The ninth lens 109 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the ninth lens 109 may have inflection points. The tenth lens 110 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the tenth lens 110 may have inflection points. The optical imaging system 100 may further include a filter IF and an image plane IP. The filter IF may be disposed between the tenth lens 110 and the image plane IP. In an example, the filter IF may be omitted as needed. The image plane IP may be formed on one surface of the image sensor IS of the camera module or inside the image sensor IS. However, the position of the image plane IP is not limited to the one surface of the image sensor IS or inside the image sensor IS. Table 1 and Table 2 below show the lens properties and aspherical surface values of the optical imaging system according to this exemplary embodiment. FIG. 2 is the aberration curve of the optical imaging system according to this exemplary embodiment. Table 1: [Table 2] The optical imaging system according to the second exemplary embodiment will be described with reference to FIG. 3. Referring to FIG. 3, the exemplary 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, a ninth lens 209, and a tenth lens 210. The first lens 201 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The second lens 202 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The third lens 203 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The fourth lens 204 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The fifth lens 205 may have a positive refractive power and may have a concave object-side surface and a convex image-side surface. The sixth lens 206 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. The seventh lens 207 may have a positive refractive power and may have a convex object-side surface and a convex image-side surface. Additionally, both the object-side surface and the image-side surface of the seventh lens 207 may have inflection points. The eighth lens 208 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the eighth lens 208 may have inflection points. The ninth lens 209 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the ninth lens 209 may have inflection points. The tenth lens 210 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the tenth lens 210 may have inflection points. The optical imaging system 200 may further include a filter IF and an image plane IP. The filter IF may be disposed between the tenth lens 210 and the image plane IP. In an example, the filter IF may be omitted as needed. The image plane IP may be formed on one surface of the image sensor IS of the camera module or inside the image sensor IS. However, the position of the image plane IP is not limited to the one surface of the image sensor IS or inside the image sensor IS. Table 3 and Table 4 below show the lens properties and aspherical surface values of the optical imaging system according to this exemplary embodiment. FIG. 4 is the aberration curve of the optical imaging system according to this exemplary embodiment. Table 3: [Table 4] The optical imaging system according to the third exemplary embodiment will be described with reference to FIG. 5. Referring to FIG. 5, the exemplary optical imaging system 300 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, a ninth lens 309, and a tenth lens 310. The first lens 301 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The second lens 302 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The third lens 303 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The fourth lens 304 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The fifth lens 305 may have a positive refractive power and may have a concave object-side surface and a convex image-side surface. The sixth lens 306 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. The seventh lens 307 may have a positive refractive power and may have a convex object-side surface and a convex image-side surface. Additionally, both the object-side surface and the image-side surface of the seventh lens 307 may have inflection points. The eighth lens 308 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the eighth lens 308 may have inflection points. The ninth lens 309 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the ninth lens 309 may have inflection points. The tenth lens 310 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the tenth lens 310 may have inflection points. The optical imaging system 300 may further include a filter IF and an image plane IP. The filter IF may be disposed between the tenth lens 310 and the image plane IP. In an example, the filter IF may be omitted as needed. The image plane IP may be formed on one surface of the image sensor IS of the camera module or inside the image sensor IS. However, the position of the image plane IP is not limited to the one surface of the image sensor IS or inside the image sensor IS. Tables 5 and 6 below show the lens properties and aspherical surface values of the optical imaging system according to this exemplary embodiment. FIG. 6 is the aberration curve of the optical imaging system according to this exemplary embodiment. Table 5: Table 6: The optical imaging system according to the fourth exemplary embodiment will be described with reference to FIG. 7. Referring to FIG. 7, the exemplary optical imaging system 400 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, a ninth lens 409, and a tenth lens 410. The first lens 401 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The second lens 402 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The third lens 403 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The fourth lens 404 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The fifth lens 405 may have a positive refractive power and may have a concave object-side surface and a convex image-side surface. The sixth lens 406 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. The seventh lens 407 may have a positive refractive power and may have a convex object-side surface and a convex image-side surface. Additionally, both the object-side surface and the image-side surface of the seventh lens 407 may have inflection points. The eighth lens 408 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the eighth lens 408 may have inflection points. The ninth lens 409 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the ninth lens 409 may have inflection points. The tenth lens 410 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the tenth lens 410 may have inflection points. The optical imaging system 400 may further include a filter IF and an image plane IP. The filter IF may be disposed between the tenth lens 410 and the image plane IP. In an example, the filter IF may be omitted as needed. The image plane IP may be formed on one surface of the image sensor IS of the camera module or inside the image sensor IS. However, the position of the image plane IP is not limited to the one surface of the image sensor IS or inside the image sensor IS. Tables 7 and 8 below show the lens properties and aspherical surface values of the optical imaging system according to this exemplary embodiment. FIG. 8 is an aberration curve of the optical imaging system according to this exemplary embodiment. Table 7: Table 8: The optical imaging system according to the fifth exemplary embodiment will be described with reference to FIG. 9. Referring to FIG. 9, the exemplary optical imaging system 500 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, a ninth lens 509, and a tenth lens 510. The first lens 501 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The second lens 502 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The third lens 503 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The fourth lens 504 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The fifth lens 505 may have a positive refractive power and may have a concave object-side surface and a convex image-side surface. The sixth lens 506 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. The seventh lens 507 may have a positive refractive power and may have a convex object-side surface and a convex image-side surface. Additionally, both the object-side surface and the image-side surface of the seventh lens 507 may have inflection points. The eighth lens 508 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the eighth lens 508 may have inflection points. The ninth lens 509 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the ninth lens 509 may have inflection points. The tenth lens 510 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the tenth lens 510 may have inflection points. The optical imaging system 500 may further include a filter IF and an image plane IP. The filter IF may be disposed between the tenth lens 510 and the image plane IP. In an example, the filter IF may be omitted as needed. The image plane IP may be formed on one surface of the image sensor IS of the camera module or inside the image sensor IS. However, the position of the image plane IP is not limited to the one surface of the image sensor IS or inside the image sensor IS. Table 9 and Table 10 below show the lens properties and aspherical surface values of the optical imaging system according to this exemplary embodiment. FIG. 10 is the aberration curve of the optical imaging system according to this exemplary embodiment. Table 9: Table 10: The optical imaging system according to the sixth exemplary embodiment will be described with reference to FIG. 11. Referring to FIG. 11, the exemplary optical imaging system 600 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, a ninth lens 609, and a tenth lens 610. The first lens 601 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The second lens 602 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The third lens 603 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The fourth lens 604 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The fifth lens 605 may have a positive refractive power and may have a concave object-side surface and a convex image-side surface. The sixth lens 606 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. The seventh lens 607 may have a positive refractive power and may have a convex object-side surface and a convex image-side surface. Additionally, both the object-side surface and the image-side surface of the seventh lens 607 may have inflection points. The eighth lens 608 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the eighth lens 608 may have inflection points. The ninth lens 609 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the ninth lens 609 may have inflection points. The tenth lens 610 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the tenth lens 610 may have inflection points. The optical imaging system 600 may further include a filter IF and an image plane IP. The filter IF may be disposed between the tenth lens 610 and the image plane IP. The filter IF may be omitted as needed. The image plane IP may be formed on one surface of the image sensor IS of the camera module or inside the image sensor IS. However, the position of the image plane IP is not limited to the one surface of the image sensor IS or inside the image sensor IS. Table 11 and Table 12 below show the lens properties and aspherical surface values of the optical imaging system according to this exemplary embodiment. FIG. 12 is the aberration curve of the optical imaging system according to this exemplary embodiment. Table 11: Table 12: The optical imaging system according to the seventh exemplary embodiment will be described with reference to FIG. 13. Referring to FIG. 13, the exemplary optical imaging system 700 may include 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, a ninth lens 709, and a tenth lens 710. The first lens 701 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The second lens 702 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The third lens 703 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The fourth lens 704 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The fifth lens 705 may have a positive refractive power and may have a concave object-side surface and a convex image-side surface. The sixth lens 706 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. The seventh lens 707 may have a positive refractive power and may have a convex object-side surface and a convex image-side surface. Additionally, both the object-side surface and the image-side surface of the seventh lens 707 may have inflection points. The eighth lens 708 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the eighth lens 708 may have inflection points. The ninth lens 709 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the ninth lens 709 may have inflection points. The tenth lens 710 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the tenth lens 710 may have inflection points. The optical imaging system 700 may further include a filter IF and an image plane IP. The filter IF may be disposed between the eighth lens 710 and the image plane IP. In an example, the filter IF may be omitted as needed. The image plane IP may be formed on one surface of the image sensor IS of the camera module or inside the image sensor IS. However, the position of the image plane IP is not limited to the one surface of the image sensor IS or inside the image sensor IS. Table 13 and Table 14 below show the lens properties and aspherical surface values of the optical imaging system according to this exemplary embodiment. FIG. 14 is the aberration curve of the optical imaging system according to this exemplary embodiment. Table 13: Table 14: The optical imaging system according to the eighth exemplary embodiment will be described with reference to FIG. 15. Referring to FIG. 15, the exemplary optical imaging system 800 may include 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, a ninth lens 809, and a tenth lens 810. The first lens 801 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The second lens 802 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The third lens 803 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. The fourth lens 804 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. The fifth lens 805 may have a positive refractive power and may have a concave object-side surface and a convex image-side surface. The sixth lens 806 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. The seventh lens 807 may have a positive refractive power and may have a convex object-side surface and a convex image-side surface. Additionally, both the object-side surface and the image-side surface of the seventh lens 807 may have inflection points. The eighth lens 808 may have a negative refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the eighth lens 808 may have inflection points. The ninth lens 809 may have a positive refractive power and may have a convex object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the ninth lens 809 may have inflection points. The tenth lens 810 may have a negative refractive power and may have a concave object-side surface and a concave image-side surface. Additionally, both the object-side surface and the image-side surface of the tenth lens 810 may have inflection points. The optical imaging system 800 may further include a filter IF and an image plane IP. The filter IF may be disposed between the tenth lens 810 and the image plane IP. In an example, the filter IF may be omitted as needed. The image plane IP may be formed on one surface of the image sensor IS of the camera module or inside the image sensor IS. However, the position of the image plane IP is not limited to the one surface of the image sensor IS or inside the image sensor IS. Tables 15 and 16 below show the lens properties and aspherical surface values of the optical imaging system according to this exemplary embodiment. FIG. 16 is the aberration curve of the optical imaging system according to this exemplary embodiment. Table 15: Table 16: Tables 17 to 19 below show the optical property values and condition expression values of the exemplary optical imaging systems according to the first to eighth exemplary embodiments. Table 17: Table 18: Table 19: An exemplary electronic device according to one or more embodiments will be described with reference to FIG. 17. According to the one or more embodiments, an exemplary electronic device according to the present disclosure may include an optical imaging system according to the one or more examples. For example, the electronic device may include one or more of the optical imaging systems according to the first exemplary embodiment to the eighth exemplary embodiment. As a specific example, the electronic device may include the optical imaging system 100 according to the first exemplary embodiment. The electronic device according to an exemplary embodiment may be the portable terminal 1000 as shown in FIG. 17. However, the type of the electronic device is not limited to the portable terminal 1000. For example, merely as an example, the electronic device according to another exemplary embodiment may be a laptop computer. The portable terminal 1000 may include one or more camera modules 10 and 20. In an example, two camera modules 10 and 20 may be provided at a predetermined interval in the body of the portable terminal 1000. The first camera module 10 and the second camera module 20 may be configured to capture images of an object in the same direction. For example, the first camera module 10 and the second camera module 20 may be mounted parallel to each other on one surface of the portable terminal 1000. One or more of the first camera module 10 and the second camera module 20 may include an optical imaging system according to the first exemplary embodiment to the eighth exemplary embodiment. For example, the second camera module 20 may include the optical imaging system 100 according to the first exemplary embodiment. Although the present disclosure includes specific examples, it will be apparent to those of ordinary skill in the art that various changes in form and detail may be made in these examples without departing from the spirit and scope of the patent claims and their equivalents after understanding the disclosure of the present application. The examples described herein should be considered illustrative only and not for limiting purposes. The description of the features or aspects in each example should be considered applicable to similar features or aspects in other examples. Suitable results can also be achieved if the described techniques are implemented in a different order, and / or if the components in the described system, architecture, device, or circuit are combined in a different manner and / or replaced or supplemented by other components or their equivalents. Therefore, in addition to the above disclosure, the scope of the present disclosure may also be defined by the patent claims and their equivalents, and all variations within the scope of the patent claims and their equivalents should be construed as being included in the present disclosure. 10: First camera module / Camera module 20: Second camera module / Camera module 100, 200, 300, 400, 500, 600, 700, 800: Optical imaging system 101, 201, 301, 401, 501, 601, 701, 801: First lens 102, 202, 302, 402, 502, 602, 702, 802: Second lens 103, 203, 303, 403, 503, 603, 703, 803: Third lens 104, 204, 304, 404, 504, 604, 704, 804: Fourth lens 105, 205, 305, 405, 505, 605, 705, 805: Fifth lens 106, 206, 306, 406, 506, 606, 706, 806: Sixth lens 107, 207, 307, 407, 507, 607, 707, 807: Seventh lens 108, 208, 308, 408, 508, 608, 708, 808: Eighth lens 109, 209, 309, 409, 509, 609, 709, 809: Ninth lens 110, 210, 310, 410, 510, 610, 710, 810: Tenth lens 1000: Portable terminal IF: Filter IP: Image plane IS: Image sensor FIG. 1 is a configuration diagram showing an exemplary optical imaging system according to a first exemplary embodiment. FIG. 2 is an aberration curve of the exemplary optical imaging system shown in FIG. 1. FIG. 3 is a configuration diagram showing an exemplary optical imaging system according to a second exemplary embodiment. FIG. 4 is an aberration curve of the exemplary optical imaging system shown in FIG. 3. FIG. 5 is a configuration diagram showing an exemplary optical imaging system according to a third exemplary embodiment. FIG. 6 is an aberration curve of the exemplary optical imaging system shown in FIG. 5. FIG. 7 is a configuration diagram showing an exemplary optical imaging system according to a fourth exemplary embodiment. FIG. 8 is an aberration curve of the exemplary optical imaging system shown in FIG. 7. FIG. 9 is a configuration diagram showing an exemplary optical imaging system according to a fifth exemplary embodiment. FIG. 10 is an aberration curve of the exemplary optical imaging system shown in FIG. 9. FIG. 11 is a configuration diagram showing an exemplary optical imaging system according to a sixth exemplary embodiment. FIG. 12 is an aberration curve of the exemplary optical imaging system shown in FIG. 11. FIG. 13 is a configuration diagram showing an exemplary optical imaging system according to a seventh exemplary embodiment. FIG. 14 is an aberration curve of the exemplary optical imaging system shown in FIG. 13. FIG. 15 is a configuration diagram showing an exemplary optical imaging system according to an eighth exemplary embodiment. FIG. 16 is an aberration curve of the exemplary optical imaging system shown in FIG. 15. FIG. 17 shows a perspective view of an exemplary electronic device including an optical imaging system according to one or more embodiments. Throughout the drawings and the detailed description, unless otherwise described or specified, the same reference numerals 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, illustration, and convenience, the relative sizes, proportions, and illustrations of elements in the drawings may be exaggerated. 100: Optical imaging system 101: First lens 102: Second lens 103: Third lens 104: Fourth lens 105: Fifth lens 106: Sixth lens 107: Seventh lens 108: Eighth lens 109: Ninth lens 110: Tenth lens IF: Filter IP: Image plane IS: Image sensor

Claims

1. An optical imaging system, comprising: 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, a ninth lens, and a tenth lens, wherein the second lens has negative refractive power, and the fourth lens has a concave image-side surface. The first to the tenth lenses are arranged sequentially from the object side to the image side. The optical imaging system has a total of ten refractive lenses, and TTL / (2*ImgHT) < 0.66, and 0 < f9 / f < 2.0, where TTL is the distance from the object-side surface of the first lens to the image plane, ImgHT is the height of the image plane, f is the focal length of the optical imaging system, and f9 is the focal length of the ninth lens.

2. The optical imaging system as claimed in claim 1, wherein: -1.0 < f1 / f3 < -0.01, where f1 is the focal length of the first lens and f3 is the focal length of the third lens.

3. The optical imaging system as claimed in claim 1, wherein: 0 < BFL / f < 0.3, where BFL is the distance from the image-side surface of the tenth lens to the image plane.

4. The optical imaging system as claimed in claim 1, wherein: 0 < D12 / f < 0.3, where D12 is the distance from the image-side surface of the first lens to the object-side surface of the second lens.

5. The optical imaging system as claimed in claim 1, wherein: 70° < FOV*ImgHT / f, where FOV is the angle of view of the optical imaging system.

6. The optical imaging system as claimed in claim 1, wherein: 0.30 mm < SmT23 < 0.80 mm, where SmT23 is the sum of the thickness of the second lens and the thickness of the third lens.

7. The optical imaging system as claimed in claim 1, wherein: 0.50 mm < SmT3456 < 1.50 mm, where SmT3456 is the sum of the thicknesses of the third lens, the fourth lens, the fifth lens, and the sixth lens.

8. The optical imaging system as claimed in claim 1, wherein: 0 < SmT23 / TTL < 0.10, where SmT23 is the sum of the thickness of the second lens and the thickness of the third lens.

9. The optical imaging system as claimed in claim 1, wherein: 0.9 < f2 / f6 < 1.20, where f2 is the focal length of the second lens and f6 is the focal length of the sixth lens.

10. An electronic device comprising the optical imaging system as claimed in claim 1.

Images