Optical imaging system

Abstract

An optical imaging system includes: a first lens having positive refractive power, a convex object side surface, and a concave image side surface; a second lens having negative refractive power, a convex object side surface, and a concave image side surface; a third lens having positive refractive power; a fourth lens having negative refractive power and a concave image side surface; a fifth lens having refractive power; a sixth lens having refractive power; and a seventh lens having refractive power, wherein the first lens to the seventh lens are sequentially arranged in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the optical imaging system has a total of seven lenses, wherein the optical imaging system satisfies 0.01 < R1 / R4 < 1.3, 0.4 < ΣTD / TTL < 0.7, and 0.2 < ΣSD / ΣTD < 0.7.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit of priority to Korean Patent Application Nos. 10-2018-0061409, filed on May 29, 2018, and 10-2018-0106170, filed on September 5, 2018, with the Korean Intellectual Property Office, the entire disclosure of which is hereby incorporated by reference for all purposes. Technical field

[0003] This application relates to an optical imaging system. Background art

[0004] Recently, mobile communication terminals have been provided with camera modules, making video calls and image capturing possible. In addition, as the utilization rate of the camera modules installed in mobile communication terminals increases, there is a growing demand for camera modules for mobile communication terminals to have high resolution and high performance.

[0005] Therefore, the number of lenses included in the camera module has increased. However, since mobile communication terminals equipped with camera modules tend to be miniaturized, it is difficult to arrange the lenses in the camera module.

[0006] Therefore, technologies capable of performing aberration correction to achieve high resolution and arranging multiple lenses in a limited space are being studied. Summary of the invention

[0007] The Summary of the Invention section is intended to introduce, in a brief form, selections of inventive concepts, which will be further described in the Detailed Description section below. The Summary of the Invention section 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.

[0008] In one 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, and a seventh lens sequentially arranged in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging surface of the optical imaging system; and a spacer disposed between the sixth lens and the seventh lens, wherein the optical imaging system satisfies 0.5 < S6d / f < 1.4, where S6d is an inner diameter of the spacer and f is a total focal length of the optical imaging system, and S6d and f are expressed in the same unit of measurement.

[0009] The optical imaging system may further satisfy 0.5 < S6d / f < 1.2.

[0010] The optical imaging system can also satisfy 0.1 < L1w / L7w < 0.3, where L1w is the weight of the first lens, L7w is the weight of the seventh lens, and L1w and L7w are expressed in the same units of measure.

[0011] The optical imaging system can also satisfy 0.4 < L1TR / L7TR < 0.7, where L1TR is the overall outside diameter of the first lens, L7TR is the overall outside diameter of the seventh lens, and L1TR and L7TR are expressed in the same units of measure.

[0012] The optical imaging system can also satisfy 0.5 < L1234TRavg / L7TR < 0.75, where L1234TRavg is the average of the overall outside diameters of the first lens through the fourth lens, L7TR is the overall outside diameter of the seventh lens, and L1234TRavg and L7TR are expressed in the same units of measure.

[0013] The optical imaging system can also satisfy 0.5 < L12345TRavg / L7TR < 0.76, where L12345TRavg is the average of the overall outside diameters of the first lens through the fifth lens, L7TR is the overall outside diameter of the seventh lens, and L12345TRavg and L7TR are expressed in the same units of measure.

[0014] The optical imaging system can also satisfy 0.1 < (1 / f1 + 1 / f2 + 1 / f3 + 1 / f4 + 1 / f5 + 1 / f6 + 1 / f7)*f < 0.8, where 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, f is the total focal length of the optical imaging system, and f1, f2, f3, f4, f5, f6, f7, and f are expressed in the same units of measure.

[0015] The optical imaging system can also satisfy 0.1 < (1 / f1 + 1 / f2 + 1 / f3 + 1 / f4 + 1 / f5 + 1 / f6 + 1 / f7)*TTL < 1.0, where 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, TTL is the distance along the optical axis from the object side face of the first lens to the image plane, and f1, f2, f3, f4, f5, f6, f7, and TTL are expressed in the same units of measure.

[0016] The optical imaging system can also satisfy 0.2 < TD1 / D67 < 0.8, where TD1 is a thickness of the first lens along the optical axis, D67 is a distance along the optical axis from an object-side surface of the sixth lens to an image-side surface of the seventh lens, and TD1 and D67 are expressed in the same unit of measurement.

[0017] The imaging surface can be an imaging surface of an image sensor, and the optical imaging system can also satisfy TTL < 6.00 mm and 0.6 < TTL / (2*Img HT) < 0.9, where TTL is a distance along the optical axis from an object-side surface of the first lens to the imaging surface of the image sensor, Img HT is half of a diagonal length of the imaging surface of the image sensor, and TTL and Img HT are expressed in mm.

[0018] The optical imaging system can also satisfy 0.2 < ΣSD / ΣTD < 0.7, where ΣSD is a sum of air gaps along the optical axis between the first lens and the seventh lens, ΣTD is a sum of thicknesses along the optical axis of the first lens to the seventh lens, and ΣSD and ΣTD are expressed in the same unit of measurement.

[0019] The optical imaging system can also satisfy 0 < min(f1:f3) / max(f4:f7) < 0.4, where min(f1:f3) is a minimum value of absolute values of focal lengths of the first lens to the third lens, max(f4:f7) is a maximum value of absolute values of focal lengths of the fourth lens to the seventh lens, and min(f1:f3) and max(f4:f7) are expressed in the same unit of measurement.

[0020] The optical imaging system can also satisfy 0.4 < ΣTD / TTL < 0.7, where ΣTD is a sum of thicknesses along the optical axis of the first lens to the seventh lens, TTL is a distance along the optical axis from an object-side surface of the first lens to the imaging surface, and ΣTD and TTL are expressed in the same unit of measurement.

[0021] The optical imaging system can also satisfy 0.81 < f12 / f123 < 0.96, where f12 is a combined focal length of the first lens and the second lens, f123 is a combined focal length of the first lens to the third lens, and f12 and f123 are expressed in the same unit of measurement.

[0022] The optical imaging system can also satisfy 0.6 < f12 / f1234 < 0.84, where f12 is a combined focal length of the first lens and the second lens, f1234 is a combined focal length of the first lens to the fourth lens, and f12 and f1234 are expressed in the same unit of measurement.

[0023] The second lens can have a positive refractive power, or the third lens can have a positive refractive power.

[0024] The fifth lens can have a negative refractive power, and a paraxial region of the object side surface of the fifth lens can be concave or convex.

[0025] The fifth lens can have a negative refractive power, and a paraxial region of the image side surface of the fifth lens can be concave or convex.

[0026] A paraxial region of the object side surface of the sixth lens can be concave or convex.

[0027] A paraxial region of the object side surface of the seventh lens can be concave.

[0028] Other features and aspects will become apparent from the following detailed description, drawings and claims. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a view showing a first example of an optical imaging system.

[0030] Figure 2 Aberration curves of the optical imaging system of Figure 1 are shown.

[0031] Figure 3 is a view showing a second example of an optical imaging system.

[0032] Figure 4 Aberration curves of the optical imaging system of Figure 3 are shown.

[0033] Figure 5 is a view showing a third example of an optical imaging system.

[0034] Figure 6 Aberration curves of the optical imaging system of Figure 5 are shown.

[0035] Figure 7 is a view showing a fourth example of an optical imaging system.

[0036] Figure 8 Aberration curves of the optical imaging system of Figure 7 are shown.

[0037] Figure 9 is a view showing a fifth example of an optical imaging system.

[0038] Figure 10 Aberration curves of the optical imaging system of Figure 9 are shown.

[0039] Figure 11 is a view showing a sixth example of an optical imaging system.

[0040] Figure 12 Aberration curves of the optical imaging system of Figure 11aberration curves of the optical imaging system of

[0041] Figure 13 is a view showing a seventh example of an optical imaging system.

[0042] Figure 14 is shown Figure 13 aberration curves of the optical imaging system of

[0043] Figure 15 is a view showing an eighth example of an optical imaging system.

[0044] Figure 16 is shown Figure 15 aberration curves of the optical imaging system of

[0045] Figure 17 is a view showing a ninth example of an optical imaging system.

[0046] Figure 18 is shown Figure 17 aberration curves of the optical imaging system of

[0047] Figure 19 is a view showing a tenth example of an optical imaging system.

[0048] Figure 20 is shown Figure 19 aberration curves of the optical imaging system of

[0049] Figure 21 is a view showing an eleventh example of an optical imaging system.

[0050] Figure 22 is shown Figure 21 aberration curves of the optical imaging system of

[0051] Figure 23 is a view showing a twelfth example of an optical imaging system.

[0052] Figure 24 is shown Figure 23 aberration curves of the optical imaging system of

[0053] Figure 25 is a view showing a thirteenth example of an optical imaging system.

[0054] Figure 26 is shown Figure 25 aberration curves of the optical imaging system of

[0055] Figure 27 is a view showing a fourteenth example of an optical imaging system.

[0056] Figure 28 is shownFigure 27 Aberration curves of optical imaging systems.

[0057] Figure 29 This is a view showing the fifteenth example of an optical imaging system.

[0058] Figure 30 It shows Figure 29 Aberration curves of optical imaging systems.

[0059] Figure 31 This is a view showing the sixteenth example of an optical imaging system.

[0060] Figure 32 It shows Figure 31 Aberration curves of optical imaging systems.

[0061] Figure 33 This is a view showing the seventeenth example of an optical imaging system.

[0062] Figure 34 It shows Figure 33 Aberration curves of optical imaging systems.

[0063] Figure 35 This is a view showing the eighteenth example of an optical imaging system.

[0064] Figure 36 It shows Figure 35 Aberration curves of optical imaging systems.

[0065] Figure 37 This is a view showing the nineteenth example of an optical imaging system.

[0066] Figure 38 It shows Figure 37 Aberration curves of optical imaging systems.

[0067] Figure 39 This is a view showing the twentieth example of an optical imaging system.

[0068] Figure 40 It shows Figure 39 Aberration curves of optical imaging systems.

[0069] Figure 41 This is a view showing the twenty-first example of an optical imaging system.

[0070] Figure 42 It shows Figure 41 Aberration curves of optical imaging systems.

[0071] Figure 43 This is a view showing the twenty-second example of an optical imaging system.

[0072] Figure 44 It shows Figure 43 Aberration curves of optical imaging systems.

[0073] Figure 45 This is a view showing the twenty-third example of an optical imaging system.

[0074] Figure 46 It shows Figure 45 Aberration curves of optical imaging systems.

[0075] Figure 47 This is a view showing the twenty-fourth example of an optical imaging system.

[0076] Figure 48 It shows Figure 47 Aberration curves of optical imaging systems.

[0077] Figure 49 This is a view showing the twenty-fifth example of an optical imaging system.

[0078] Figure 50 It shows Figure 49 Aberration curves of optical imaging systems.

[0079] Figure 51 This is a view showing the twenty-sixth example of an optical imaging system.

[0080] Figure 52 It shows Figure 51 Aberration curves of optical imaging systems.

[0081] Figure 53 This is a view showing the twenty-seventh example of an optical imaging system.

[0082] Figure 54 It shows Figure 53 Aberration curves of optical imaging systems.

[0083] Figure 55 and Figure 56 This is a cross-sectional view showing an example of an optical imaging system and lens barrel connected to each other.

[0084] Figure 57 This is a cross-sectional view showing an example of the shape of the ribs of a lens.

[0085] Figure 58 This is a cross-sectional view showing an example of the seventh lens.

[0086] Throughout all the accompanying drawings and detailed descriptions, the same reference numerals refer to the same elements. For purposes of clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative dimensions, scale, and depiction of elements in the drawings may be exaggerated. Detailed Implementation

[0087] The following detailed description is presented to aid the reader in gaining a comprehensive understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents can be used, and thus particular embodiments described herein are not to be taken in a limiting sense. For example, although processes are described with regard to the particular sequential order in which steps are performed, the order is not limiting unless specifically stated, and will be apparent to one of skill in the art, and the described implementations can be implemented with regard to a different order, or simultaneously. Also, descriptions of features in terms of being performed in a certain order is used for enabling a clear and complete description and does not require performing the functionality in that particular order unless otherwise specified.

[0088] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, these examples are provided as illustrative of a number of ways in which the methods, apparatuses, and / or systems described herein can be implemented, although other ways to implement the described methods, apparatuses, and / or systems are possible. For example, the layout of the various features described herein can be different.

[0089] Throughout the specification, when an element such as a layer, region, or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no other elements interposed therebetween.

[0090] As used in this application, the term "and / or" includes any one of the associated listed items, as well as any combination of any two or more of the associated listed items.

[0091] Although the terms "first," "second," and "third" can be used herein to describe various elements, components, regions, layers, or sections, these elements, components, regions, layers, or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. Thus, a first element, component, region, layer, or section mentioned in one example can also be called a second element, component, region, layer, or section in another example without departing from the teachings of the examples described herein.

[0092] Spatially relative terms, such as "on", "upper", "lower", "below", and "above", can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Such spatially relative terms can encompass different orientations of the device in use or operation, depending on the context in which it is used. For example, if the device in the figures is turned over, elements described as "on" or "upper" relative to other elements or features would then be oriented "below" or "lower" relative to the other elements or features. Thus, the spatially relative terms can be interpreted differently depending on the context in which it is used. The application can also be implemented in a different spatial orientation (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be construed accordingly.

[0093] The terminology used in the present application is for the purpose of describing various examples only and is not intended to be limiting of the present disclosure. Unless otherwise defined, the terms "a", "one" and "the" are intended to include both singular and plural forms. The terms "including", "comprising" and "having" are meant to be inclusive and mean that there can be additional features, numbers, operations, components, elements, and / or combinations thereof in the described examples.

[0094] For ease of explanation, the thickness, size, and shape of the lenses shown in the drawings can be slightly exaggerated. In addition, the shape of the spherical surface or aspherical surface of the lenses described in the detailed description and shown in the drawings is merely an example. That is, the shape of the spherical surface or aspherical surface of the lenses is not limited to the examples described in the present application.

[0095] The numerical values of the radius of curvature, the thickness of the lens, the distance between elements including the lens or surface, the effective radius of the lens, the diameter, thickness, and length of various elements are expressed in millimeters (mm), and the angles are expressed in degrees. The thickness of the lens and the distance between elements including the lens or surface are measured along the optical axis of the optical imaging system.

[0096] The term "effective half radius" used in the present application refers to the radius of the portion of the surface (object side or image side) through which light actually passes. The effective half radius is equal to the straight line distance between the optical axis of the surface and the outermost point on the surface through which light actually passes. Thus, the effective half radius can be equal to the radius of the optical portion of the lens, or if light does not pass through the edge portion of the optical portion of the lens, the effective half radius can be smaller than the radius of the optical portion of the lens. The object side and image side of the lens can have different effective half radii.

[0097] In the present application, a reference to the shape of a lens surface refers to the shape of the paraxial region of the lens surface, unless otherwise stated. The paraxial region of a lens surface is a central portion of the lens surface around the optical axis of the lens surface, in which light rays incident to the lens surface form a small angle θ with the optical axis, and the following approximations are valid: sin θ ≈ θ, tan θ ≈ θ, and cos θ ≈ 1.

[0098] For example, the expression that the object side surface of the lens is convex means that at least the paraxial region of the object side surface of the lens is convex, and the expression that the image side surface of the lens is concave means that at least the paraxial region of the image side surface of the lens is concave. Thus, even though the object side surface of the lens can be described as convex, the entire object side surface of the lens can not be convex, and the edge region of the object side surface of the lens can be concave. Meanwhile, even though the image side surface of the lens can be described as concave, the entire image side surface of the lens can not be concave, and the edge region of the image side surface of the lens can be convex.

[0099] Figure 55 and Figure 56 are cross-sectional views showing examples of an optical imaging system and a lens barrel coupled to each other.

[0100] Referring to Figure 55 and Figure 56 , the optical imaging system 100 includes a plurality of lenses disposed along an optical axis. In addition, the optical imaging system 100 further includes a lens barrel 200 in which the plurality of lenses are accommodated. The plurality of lenses are spaced apart from each other at predetermined distances along the optical axis.

[0101] Each lens of the optical imaging system includes an optical portion and a rib portion. The optical portion of the lens is a portion in which the lens refracts light, and is generally formed in a central portion of the lens. The rib portion of the lens is an edge portion of the lens that enables the lens to be mounted in the lens barrel and the optical axis of the lens to be aligned with the optical axis of the optical imaging system. The rib portion of the lens extends radially outward from the optical portion, and can be integrally formed with the optical portion. The optical portions of the lenses are generally not in contact with each other. For example, the first lens to the seventh lens are mounted in the lens barrel such that they are spaced apart from each other at predetermined distances along the optical axis of the optical imaging system. The rib portions of the lenses can be selectively in contact with each other. For example, the rib portions of the first lens to the fourth lens, the rib portions of the first lens to the fifth lens, or the rib portions of the second lens to the fourth lens can be in contact with each other, so that the optical axes of these lenses can be easily aligned with the optical axis of the optical imaging system.

[0102] The example of the optical imaging system 100 described in the present application includes a self-alignment structure as shown in Figure 55 and Figure 56 .

[0103] In Figure 55In one example shown, the optical imaging system 100 includes a self-alignment structure in which the optical axes of the four consecutive lenses 1000, 2000, 3000, and 4000 are aligned with the optical axis of the optical imaging system 100 by coupling the four lenses 1000, 2000, 3000, and 4000 to each other.

[0104] The first lens 1000 disposed closest to the object side of the optical imaging system 100 is disposed in contact with the inner surface of the lens barrel 200 so that the optical axis of the first lens 1000 is aligned with the optical axis of the optical imaging system 100, the second lens 2000 is coupled to the first lens 1000 so that the optical axis of the second lens 2000 is aligned with the optical axis of the optical imaging system 100, the third lens 3000 is coupled to the second lens 2000 so that the optical axis of the third lens 3000 is aligned with the optical axis of the optical imaging system 100, and the fourth lens 4000 is coupled to the third lens 3000 so that the optical axis of the fourth lens 4000 is aligned with the optical axis of the optical imaging system 100. The second lens 2000 to the fourth lens 4000 can be disposed not in contact with the inner surface of the lens barrel 200.

[0105] Although Figure 55 Although the first lens 1000 to the fourth lens 4000 are shown as being coupled to each other, the four consecutive lenses coupled to each other can be changed to the second lens 2000 to the fifth lens 5000, the third lens 3000 to the sixth lens 6000, or the fourth lens 4000 to the seventh lens 7000.

[0106] In Figure 56 In another example shown, the optical imaging system 100 includes a self-alignment structure in which the optical axes of the five consecutive lenses 1000, 2000, 3000, 4000, and 5000 are aligned with the optical axis of the optical imaging system 100 by coupling the five lenses 1000, 2000, 3000, 4000, and 5000 to each other.

[0107] The first lens 1000 disposed closest to the object side of the optical imaging system 100 is disposed in contact with the inner surface of the lens barrel 200 so that the optical axis of the first lens 1000 is aligned with the optical axis of the optical imaging system 100, the second lens 2000 is coupled to the first lens 1000 so that the optical axis of the second lens 2000 is aligned with the optical axis of the optical imaging system 100, the third lens 3000 is coupled to the second lens 2000 so that the optical axis of the third lens 3000 is aligned with the optical axis of the optical imaging system 100, the fourth lens 4000 is coupled to the third lens 3000 so that the optical axis of the fourth lens 4000 is aligned with the optical axis of the optical imaging system 100, and the fifth lens 5000 is coupled to the fourth lens 4000 so that the optical axis of the fifth lens 5000 is aligned with the optical axis of the optical imaging system 100. The second lens 2000 to the fifth lens 5000 can be disposed not in contact with the inner surface of the lens barrel 200.

[0108] Although Figure 56 The first lens 1000 to the fifth lens 5000 are shown as being coupled to each other, but the five consecutive lenses coupled to each other can be changed to the second lens 2000 to the sixth lens 6000 or the third lens 3000 to the seventh lens 7000.

[0109] The first lens 1000 is a lens closest to an object (or a subject), and the seventh lens 7000 is a lens closest to an image sensor Figure 55 and Figure 56 not shown in Figure 1 , but for example, see

[0110] In addition, the object side surface of a lens is a surface of the lens facing an object, and the image side surface of the lens is a surface of the lens facing an image sensor.

[0111] Examples of the optical imaging system 100 disclosed in the present application include seven lenses.

[0112] For example, with reference to Figure 55 and Figure 56 , the optical imaging system 100 includes a first lens 1000, a second lens 2000, a third lens 3000, a fourth lens 4000, a fifth lens 5000, a sixth lens 6000, and a seventh lens 7000 disposed in the order of numbers from the object side of the optical imaging system 100 toward the image side of the optical imaging system 100.

[0113] The optical imaging system 100 further includes an image sensor and a filter. The image sensor forms an imaging surface and converts light refracted by the first lens to the seventh lens into an electric signal. The filter is disposed between the lenses and the imaging surface, and blocks infrared rays among the light refracted by the first lens to the seventh lens from being incident on the imaging surface.

[0114] In addition, the optical imaging system 100 further includes a diaphragm to adjust the amount of light incident on the imaging surface. For example, the diaphragm can be disposed between the first lens 1000 and the second lens 2000, or between the second lens 2000 and the third lens 3000. The diaphragm can be disposed relatively close to the first lens 1000 to reduce the total length (TTL) of the optical imaging system 100.

[0115] In Figure 55 and Figure 56 In the example shown, a spacer is disposed between each pair of adjacent lenses. At least a portion of the rib of each lens is in contact with one or both spacers. The spacers maintain the spacing between the lenses and block stray light from reaching the imaging surface.

[0116] The spacers include a first spacer SP1, a second spacer SP2, a third spacer SP3, a fourth spacer SP4, a fifth spacer SP5, and a sixth spacer SP6 disposed from the object side of the optical imaging system 100 toward the image sensor. In some examples, the spacers further include a seventh spacer SP7.

[0117] The first spacer SP1 is disposed between the first lens 1000 and the second lens 2000, the second spacer SP2 is disposed between the second lens 2000 and the third lens 3000, the third spacer SP3 is disposed between the third lens 3000 and the fourth lens 4000, the fourth spacer SP4 is disposed between the fourth lens 4000 and the fifth lens 5000, the fifth spacer SP5 is disposed between the fifth lens 5000 and the sixth lens 6000, and the sixth spacer SP6 is disposed between the sixth lens 6000 and the seventh lens 7000. When the seventh spacer SP7 is included, the seventh spacer SP7 is disposed between the sixth spacer SP6 and the sixth lens 6000. The thickness of the seventh spacer SP7 in the direction of the optical axis can be greater than the thickness of the sixth spacer SP6 in the direction of the optical axis.

[0118] The first lens has a positive or negative refractive power. In addition, the first lens can have a meniscus shape with the object side convex. Specifically, the object side of the first lens can be convex, and the image side of the first lens can be concave.

[0119] At least one of the object side and the image side of the first lens can be aspherical. For example, both faces of the first lens can be aspherical.

[0120] The second lens has a positive or negative refractive power. In addition, the second lens can have a meniscus shape with the object side convex. Specifically, the object side of the second lens can be convex, and the image side of the second lens can be concave.

[0121] Alternatively, both faces of the second lens can be convex. Specifically, the object side and the image side of the second lens can be convex.

[0122] At least one of the object side surface and the image side surface of the second lens can be aspherical. For example, both of the surfaces of the second lens can be aspherical.

[0123] The third lens has positive or negative refractive power. In addition, the third lens can have a meniscus shape in which the object side surface is convex. Specifically, the object side surface of the third lens can be convex, and the image side surface of the third lens can be concave.

[0124] Alternatively, both of the surfaces of the third lens can be convex. Specifically, the object side surface and the image side surface of the third lens can be convex.

[0125] Alternatively, the third lens can have a meniscus shape in which the image side surface is convex. Specifically, the object side surface of the third lens can be concave, and the image side surface of the third lens can be convex.

[0126] At least one of the object side surface and the image side surface of the third lens can be aspherical. For example, both of the surfaces of the third lens can be aspherical.

[0127] The fourth lens has positive or negative refractive power. In addition, the fourth lens can have a meniscus shape in which the object side surface is convex. Specifically, the object side surface of the fourth lens can be convex, and the image side surface of the fourth lens can be concave.

[0128] Alternatively, both of the surfaces of the fourth lens can be convex. Specifically, the object side surface and the image side surface of the fourth lens can be convex.

[0129] Alternatively, the fourth lens can have a meniscus shape in which the image side surface is convex. Specifically, the object side surface of the fourth lens can be concave, and the image side surface of the fourth lens can be convex.

[0130] At least one of the object side surface and the image side surface of the fourth lens can be aspherical. For example, both of the surfaces of the fourth lens can be aspherical.

[0131] The fifth lens has positive or negative refractive power. In addition, the fifth lens can have a meniscus shape in which the object side surface is convex. Specifically, the object side surface of the fifth lens can be convex, and the image side surface of the fifth lens can be concave.

[0132] Alternatively, the fifth lens can have a meniscus shape in which the image side surface is convex. Specifically, the object side surface of the fifth lens can be concave, and the image side surface of the fifth lens can be convex.

[0133] At least one of the object side surface and the image side surface of the fifth lens can be aspherical. For example, both of the surfaces of the fifth lens can be aspherical.

[0134] The sixth lens has positive or negative refractive power. In addition, the sixth lens can have a meniscus shape in which the object side surface is convex. Specifically, the object side surface of the sixth lens can be convex, and the image side surface of the sixth lens can be concave.

[0135] Alternatively, both surfaces of the sixth lens can be convex. Specifically, the object side surface and the image side surface of the sixth lens can be convex.

[0136] Alternatively, the sixth lens can have a meniscus shape in which the image side surface is convex. Specifically, the object side surface of the sixth lens can be concave, and the image side surface of the sixth lens can be convex.

[0137] Alternatively, both surfaces of the sixth lens can be concave. Specifically, the object side surface and the image side surface of the sixth lens can be concave.

[0138] At least one of the object side surface and the image side surface of the sixth lens can be aspherical. For example, both surfaces of the sixth lens can be aspherical.

[0139] The seventh lens has positive or negative refractive power. In addition, the seventh lens can have a meniscus shape in which the object side surface is convex. Specifically, the object side surface of the seventh lens can be convex, and the image side surface of the seventh lens can be concave.

[0140] Alternatively, both surfaces of the seventh lens can be concave. Specifically, the object side surface and the image side surface of the seventh lens can be concave.

[0141] At least one of the object side surface and the image side surface of the seventh lens can be aspherical. For example, both surfaces of the seventh lens can be aspherical.

[0142] In addition, at least one inflection point can be formed on at least one of the object side surface and the image side surface of the seventh lens. The inflection point is a point at which the lens surface changes from convex to concave or from concave to convex. The number of inflection points is counted from the center of the lens to the outer edge of the optical portion of the lens. For example, the object side surface of the seventh lens can be convex in the paraxial region and become concave toward the edge of the object side surface of the seventh lens. The image side surface of the seventh lens can be concave in the paraxial region and become convex toward the edge of the image side surface of the seventh lens.

[0143] Figure 57 is a sectional view showing an example of the shape of the rib of the lens.

[0144] Light reflected from an object (or a subject) can be refracted by the first lens to the seventh lens. In this case, unintended reflection of light can occur. The unintended reflection of light, which is light unrelated to the formation of an image, can cause a flicker phenomenon in a captured image.

[0145] The example of the optical imaging system 100 described in this application can include a structure for preventing a flickering phenomenon and reflection.

[0146] For example, as Figure 57 illustrated, the rib portion of the seventh lens 7000 disposed closest to the image sensor includes a surface treatment region EA. The surface treatment region EA is a portion of the surface of the rib portion that is treated to be rougher than other portions of the surface of the rib portion. For example, the surface treatment region EA can be formed by chemical etching, physical polishing, or any other surface treatment method. The surface treatment region EA scatters reflected light.

[0147] Therefore, even if unintended reflection of light can occur, the reflected light can be prevented from concentrating at a point, and thus occurrence of a flickering phenomenon can be suppressed.

[0148] The surface treatment region EA can be formed in an entire region from an edge of an optical portion of the lens to an end of the rib portion, in which light actually passes through the optical portion. However, as Figure 57 illustrated, a non-treatment region NEA including recessed portions E11, E21, and E22 can not be surface-treated, or can be surface-treated to have a roughness different from that of the surface treatment region EA. The first non-treatment region NEA formed on one face of the lens and the second non-treatment region NEA formed on the other face of the lens can overlap when viewed in the optical axis direction.

[0149] A width G1 of the first non-treatment region NEA formed on one face of the lens can be different from a width G2 of the second non-treatment region NEA formed on the other face of the lens. In Figure 57 the example illustrated, G1 is greater than G2.

[0150] The first non-treatment region NEA having the width G1 includes the first recessed portion E11, and the second non-treatment region NEA having the width G2 includes the second recessed portion E21 and the third recessed portion E22. A distance G4 from the end of the rib portion to the second recessed portion E21 is less than a distance G3 from the end of the rib portion to the first recessed portion E11. In addition, a distance G5 from the end of the rib portion to the third recessed portion E22 is less than the distance G3 from the end of the rib portion to the first recessed portion E11.

[0151] As described above and as Figure 57 illustrated, the positions at which the non-treatment region NEA and the recessed portions E11, E21, and E22 are formed can be advantageous for measuring the concentricity of the lens.

[0152] The lenses of the optical imaging system can be made of an optical material having high light transmittance. For example, the first lens to the seventh lens can be made of a plastic material. However, the material of the first lens to the seventh lens is not limited to a plastic material.

[0153] In addition, the plurality of lenses can have at least one aspheric surface. That is, at least one of the object side surface and the image side surface of all of the first to seventh lenses can be aspheric. The aspheric surface of the first to seventh lenses can be represented by Equation 1 below:

[0154]

[0155] In Equation 1, c is a curvature of a lens surface, and is equal to the reciprocal of the radius of curvature of the lens surface at the optical axis of the lens surface, K is a conic constant, Y is a distance from a certain point on the aspheric surface of the lens in a direction perpendicular to the optical axis to the optical axis of the lens, A to H are aspheric constants, and Z (or sag) is a distance between a certain point at which the distance from the optical axis of the lens is Y on the aspheric surface of the lens and a tangent plane to the vertex of the aspheric surface of the lens, which is perpendicular to the optical axis. Some examples disclosed in the present application include an aspheric constant J. An additional term JY 20 The additional term JYmay be added to Equation 1 to reflect the influence of the aspheric constant J.

[0156] The optical imaging system can satisfy one or more of the following conditional expressions 1 to 5:

[0157] 0.1 < L1w / L7w < 0.4 (Conditional expression 1)

[0158] 0.5 < S6d / f < 1.4 (Conditional expression 2)

[0159] 0.4 < L1TR / L7TR < 1.9 (Conditional expression 3)

[0160] 0.5 < L1234TRavg / L7TR < 0.9 (Conditional expression 4)

[0161] 0.5 < L12345TRavg / L7TR < 0.9 (Conditional expression 5)

[0162] In the above conditional expressions, L1w is the weight of the first lens, L7w is the weight of the seventh lens, S6d is the inner diameter of the sixth spacer ring, f is the total focal length of the optical imaging system, L1TR is the total outer diameter of the first lens, L7TR is the total outer diameter of the seventh lens, L1234TRavg is the average of the total outer diameters of the first to fourth lenses, and L12345TRavg is the average of the total outer diameters of the first to fifth lenses. The total outer diameter of the lens is the diameter of the lens including the optical portion of the lens and the rib portion of the lens.

[0163] The conditional expression 1 is a conditional expression involving a weight ratio between the first lens and the seventh lens, and when the conditional expression 1 is satisfied, the optical axes can be easily aligned with each other by contact between the respective lenses and contact between the lenses and the lens barrel.

[0164] The conditional expression 2 is a conditional expression involving a ratio between an inner diameter of a sixth spacer ring (provided between the sixth lens and the seventh lens) and a total focal length of the optical imaging system, and when the conditional expression 2 is satisfied, a flicker phenomenon due to unexpected reflection of light can be suppressed.

[0165] The conditional expression 3 is a conditional expression involving a ratio between a total outer diameter of the first lens and a total outer diameter of the seventh lens, and when the conditional expression 3 is satisfied, the optical axes can be easily aligned with each other by contact between the respective lenses and contact between the lenses and the lens barrel.

[0166] The conditional expression 4 is a conditional expression involving a ratio between an average value of total outer diameters of the first lens to the fourth lens and a total outer diameter of the seventh lens, and when the conditional expression 4 is satisfied, aberration can be easily corrected to improve resolution.

[0167] The conditional expression 5 is a conditional expression involving a ratio between an average value of total outer diameters of the first lens to the fifth lens and a total outer diameter of the seventh lens, and when the conditional expression 5 is satisfied, aberration can be easily corrected to improve resolution.

[0168] The optical imaging system can further satisfy one or more of the following conditional expressions 6 to 10:

[0169] 0.1 < L1w / L7w < 0.3 (Conditional expression 6)

[0170] 0.5 < S6d / f < 1.2 (Conditional expression 7)

[0171] 0.4 < L1TR / L7TR < 0.7 (Conditional expression 8)

[0172] 0.5 < L1234TRavg / L7TR < 0.75 (Conditional expression 9)

[0173] 0.5 < L12345TRavg / L7TR < 0.76 (Conditional expression 10)

[0174] The conditional expressions 6 to 10 are the same as the conditional expressions 1 to 5 except that the conditional expressions 6 to 10 specify a narrower range.

[0175] The optical imaging system can further satisfy one or more of the following conditional expressions 11 to 32:

[0176] 0.01 < R1 / R4 < 1.3 (condition expression 11)

[0177] 0.1 < R1 / R5 < 0.7 (condition expression 12)

[0178] 0.05 < R1 / R6 < 0.9 (condition expression 13)

[0179] 0.2 < R1 / R11 < 1.2 (condition expression 14)

[0180] 0.8 < R1 / R14 < 1.2 (condition expression 15)

[0181] 0.6 < (R11+R14) / (2*R1) < 3.0 (condition expression 16)

[0182] 0.4 < D13 / D57 < 1.2 (condition expression 17)

[0183] 0.1 < (1 / f1+1 / f2+1 / f3+1 / f4+1 / f5+1 / f6+1 / f7)*f < 0.8

[0184] (condition expression 18)

[0185] 0.1 < (1 / f1+1 / f2+1 / f3+1 / f4+1 / f5+1 / f6+1 / f7)*TTL < 1.0

[0186] (condition expression 19)

[0187] 0.2 < TD1 / D67 < 0.8 (condition expression 20)

[0188] 0.1 < (R11+R14) / (R5+R6) < 1.0 (condition expression 21)

[0189] SD12 < SD34 (condition expression 22)

[0190] SD56 < SD67 (condition expression 23)

[0191] SD56 < SD34 (condition expression 24)

[0192] 0.6 < TTL / (2*Img HT) < 0.9 (condition expression 25)

[0193] 0.2 < ∑SD / ∑TD < 0.7 (condition expression 26)

[0194] 0 < min(f1:f3) / max(f4:f7) < 0.4 (condition expression 27)

[0195] 0.4 < ΣTD / TTL < 0.7 (Condition Expression 28)

[0196] 0.7 < SL / TTL < 1.0 (Condition Expression 29)

[0197] 0.81 < f12 / f123 < 0.96 (Condition Expression 30)

[0198] 0.6 < f12 / f1234 < 0.84 (Condition Expression 31)

[0199] TTL ≤ 6.00 mm (Condition Expression 32)

[0200] In the above condition expressions, R1 is the radius of curvature of the object side surface of the first lens, R4 is the radius of curvature of the image side surface of the second lens, R5 is the radius of curvature of the object side surface of the third lens, R6 is the radius of curvature of the image side surface of the third lens, R11 is the radius of curvature of the object side surface of the sixth lens, R14 is the radius of curvature of the image side surface of the seventh lens, D13 is the distance from the object side surface of the first lens to the image side surface of the third lens along the optical axis of the optical imaging system, D57 is the distance from the object side surface of the fifth lens to the image side surface of the seventh lens along the optical axis, 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, f is the total focal length of the optical imaging system, TTL is the distance from the object side surface of the first lens to the image plane of the optical imaging system along the optical axis, TD1 is the thickness of the first lens along the optical axis, D67 is the distance from the object side surface of the sixth lens to the image side surface of the seventh lens along the optical axis, SD12 is the distance from the image side surface of the first lens to the object side surface of the second lens along the optical axis, SD34 is the distance from the image side surface of the third lens to the object side surface of the fourth lens along the optical axis, SD56 is the distance from the image side surface of the fifth lens to the object side surface of the sixth lens along the optical axis, SD67 is the distance from the image side surface of the sixth lens to the object side surface of the seventh lens along the optical axis, Img HT is half of the diagonal length of the image plane, ΣSD is the sum of the air gaps between the lenses along the optical axis, ΣTD is the sum of the thicknesses of the lenses along the optical axis, min(f1:f3) is the minimum value of the absolute values of the focal lengths of the first to third lenses, max(f4:f7) is the maximum value of the absolute values of the focal lengths of the fourth to seventh lenses, SL is the distance from the stop to the image plane along the optical axis, f12 is the combined focal length of the first and second lenses, f123 is the combined focal length of the first to third lenses, and f1234 is the combined focal length of the first to fourth lenses.

[0201] When the condition expression 11 is satisfied, the correction effects of the longitudinal spherical aberration and the astigmatic field curvature can be improved, and thus the resolution can be increased.

[0202] When the conditional expression 12 is satisfied, the correction effect of the longitudinal spherical aberration and the astigmatic field curvature can be improved, and thus the resolution can be increased.

[0203] When the conditional expression 13 is satisfied, the correction effect of the longitudinal spherical aberration and the astigmatic field curvature can be improved, and thus the resolution can be increased.

[0204] When the conditional expression 14 is satisfied, the correction effect of the longitudinal spherical aberration can be improved, and the flare phenomenon can be prevented. Thus, the resolution can be increased.

[0205] When the conditional expression 15 is satisfied, the correction effect of the longitudinal spherical aberration can be improved, and the imaging surface curvature phenomenon can be suppressed. Thus, the resolution can be increased.

[0206] When the conditional expression 16 is satisfied, the correction effect of the longitudinal spherical aberration can be improved, the imaging surface curvature phenomenon can be suppressed, and the flare phenomenon can be prevented. Thus, the resolution can be increased.

[0207] When the conditional expression 17 is satisfied, a slim optical imaging system can be realized.

[0208] When the conditional expression 18 is satisfied, the sensitivity of each lens can be increased to improve the mass productivity.

[0209] When the conditional expression 20 is satisfied, a slim optical imaging system can be realized.

[0210] When the conditional expression 22 is satisfied, the chromatic aberration correction effect can be improved.

[0211] When the conditional expression 25 is satisfied, a slim optical imaging system can be realized.

[0212] When the conditional expression 26 is satisfied, the mass productivity of each lens can be increased, and a slim optical imaging system can be realized.

[0213] When the conditional expression 27 is satisfied, a slim optical imaging system can be realized.

[0214] When the conditional expression 28 is satisfied, the mass productivity of each lens can be increased, and a slim optical imaging system can be realized.

[0215] When the conditional expression 29 is satisfied, a slim optical imaging system can be realized.

[0216] When the conditional expression 30 is satisfied, a slim optical imaging system can be realized.

[0217] When the conditional expression 31 is satisfied, a slim optical imaging system can be realized.

[0218] The following presents Figure 55 and Figure 56 descriptions of twenty-seven examples of the optical imaging system 100 shown in FIGS. 1 through 3. Although these descriptions use terms such as "can include," "can have," and "can be" to describe examples, examples actually have the features and characteristics described in the descriptions using these terms. In the tables described below, S1 denotes an object side surface of the first lens, S2 denotes an image side surface of the first lens, S3 denotes an object side surface of the second lens, S4 denotes an image side surface of the second lens, S5 denotes an object side surface of the third lens, S6 denotes an image side surface of the third lens, S7 denotes an object side surface of the fourth lens, S8 denotes an image side surface of the fourth lens, S9 denotes an object side surface of the fifth lens, S10 denotes an image side surface of the fifth lens, S11 denotes an object side surface of the sixth lens, S12 denotes an image side surface of the sixth lens, S13 denotes an object side surface of the seventh lens, S14 denotes an image side surface of the seventh lens, S15 denotes an object side surface of the filter, S16 denotes an image side surface of the filter, and S17 denotes an imaging surface.

[0219] First Example

[0220] Figure 1 is a view showing a first example of an optical imaging system, and Figure 2 shows Figure 1 aberration curves of the optical imaging system of FIG. 1.

[0221] The first example of the optical imaging system can include a first lens 110, a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160, a seventh lens 170, a filter 180, an image sensor 190, and a stop (not shown) disposed between the second lens 120 and the third lens 130.

[0222] The first lens 110 can have a positive refractive power, and an object side surface of the first lens 110 can be convex in a paraxial region and an image side surface of the first lens 110 can be concave in the paraxial region.

[0223] The second lens 120 can have a negative refractive power, and an object side surface of the second lens 120 can be convex in a paraxial region and an image side surface of the second lens 120 can be concave in the paraxial region.

[0224] The third lens 130 can have a positive refractive power, and an object side surface of the third lens 130 can be convex in a paraxial region and an image side surface of the third lens 130 can be concave in the paraxial region.

[0225] The fourth lens 140 can have a positive refractive power, and an object side surface of the fourth lens 140 can be concave in a paraxial region and an image side surface of the fourth lens 140 can be convex in the paraxial region.

[0226] The fifth lens 150 can have a negative refractive power, and the object side surface of the fifth lens 150 can be concave in the paraxial region and the image side surface of the fifth lens 150 can be convex in the paraxial region.

[0227] The sixth lens 160 can have a positive refractive power, and the object side surface of the sixth lens 160 can be convex in the paraxial region and the image side surface of the sixth lens 160 can be concave in the paraxial region.

[0228] The seventh lens 170 can have a negative refractive power, and the object side surface of the seventh lens 170 can be convex in the paraxial region and the image side surface of the seventh lens 170 can be concave in the paraxial region.

[0229] In addition, two inflection points can be formed on the object side surface of the seventh lens 170. For example, the object side surface of the seventh lens 170 can be convex in the paraxial region, become concave in a region outside the paraxial region, and become convex toward an edge of the object side surface of the seventh lens 170.

[0230] In addition, one inflection point can be formed on the image side surface of the seventh lens 170. For example, the image side surface of the seventh lens 170 can be concave in the paraxial region and become convex toward an edge of the image side surface of the seventh lens 170.

[0231] Although Figure 1 not shown in FIG. 1, a stop is disposed at a distance of 0.657 mm from the object side surface of the first lens 110 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 1 listed in Table 55 presented later in this application.

[0232] Table 1 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 1 Table 2 below shows the aspherical surface coefficients of the lenses of Figure 1 Table 1 Figure 1 Both surfaces of all the lenses of

[0233] Table 1

[0234]

[0235] Table 2

[0236]

[0237]

[0238] Second Example

[0239] Figure 3is a view showing a second example of an optical imaging system, and Figure 4 is shown Figure 3 aberration curves of the optical imaging system of

[0240] A second example of an optical imaging system can include a first lens 210, a second lens 220, a third lens 230, a fourth lens 240, a fifth lens 250, a sixth lens 260, a seventh lens 270, a filter 280, an image sensor 290, and a stop (not shown) disposed between the first lens 210 and the second lens 220.

[0241] The first lens 210 can have a positive refractive power, and an object side surface of the first lens 210 can be convex in a paraxial region and an image side surface of the first lens 210 can be concave in the paraxial region.

[0242] The second lens 220 can have a negative refractive power, and an object side surface of the second lens 220 can be convex in a paraxial region and an image side surface of the second lens 220 can be concave in the paraxial region.

[0243] The third lens 230 can have a positive refractive power, and an object side surface and an image side surface of the third lens 230 can be convex in a paraxial region.

[0244] The fourth lens 240 can have a negative refractive power, and an object side surface of the fourth lens 240 can be convex in a paraxial region and an image side surface of the fourth lens 240 can be concave in the paraxial region.

[0245] The fifth lens 250 can have a negative refractive power, and an object side surface of the fifth lens 250 can be convex in a paraxial region and an image side surface of the fifth lens 250 can be concave in the paraxial region.

[0246] The sixth lens 260 can have a positive refractive power, and an object side surface and an image side surface of the sixth lens 260 can be convex in a paraxial region.

[0247] The seventh lens 270 can have a negative refractive power, and an object side surface and an image side surface of the seventh lens 270 can be concave in a paraxial region.

[0248] In addition, one inflection point can be formed on the object side surface of the seventh lens 270. For example, the object side surface of the seventh lens 270 can be concave in a paraxial region, and become convex toward an edge of the object side surface of the seventh lens 270.

[0249] In addition, one inflection point can be formed on the image side surface of the seventh lens 270. For example, the image side surface of the seventh lens 270 can be concave in a paraxial region, and become convex toward an edge of the image side surface of the seventh lens 270.

[0250] Although Figure 3The aperture is not shown, but it is set at a distance of 0.903 mm from the object side of the first lens 210 toward the image side of the optical imaging system. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 2 listed in Table 55, which will be presented later in this application.

[0251] Table 3 below shows the composition Figure 3 The physical properties of the lenses and other components of the optical imaging system are shown in Table 4 below. Figure 3 The aspherical surface coefficient of the lens. Except for the object-side surface of the second lens 220, Figure 3 Both surfaces of all the lenses are aspherical.

[0252] Table 3

[0253]

[0254] Table 4

[0255]

[0256]

[0257] Third Example

[0258] Figure 5 This is a view showing a third example of an optical imaging system, and Figure 6 It shows Figure 5 Aberration curves of optical imaging systems.

[0259] A third example of an optical imaging system may include a first lens 310, a second lens 320, a third lens 330, a fourth lens 340, a fifth lens 350, a sixth lens 360, a seventh lens 370, a filter 380, an image sensor 390, and an aperture (not shown) disposed between the first lens 310 and the second lens 320.

[0260] The first lens 310 may have positive refractive power, and the object side of the first lens 310 may bulge in the paraxial region and the image side of the first lens 310 may be concave in the paraxial region.

[0261] The second lens 320 may have negative refractive power, and the object side of the second lens 320 may bulge in the paraxial region and the image side of the second lens 320 may be concave in the paraxial region.

[0262] The third lens 330 may have positive refractive power, and the object side of the third lens 330 may bulge in the paraxial region and the image side of the third lens 330 may be concave in the paraxial region.

[0263] The fourth lens 340 can have a negative refractive power, and the object side surface of the fourth lens 340 can be convex in the paraxial region and the image side surface of the fourth lens 340 can be concave in the paraxial region.

[0264] The fifth lens 350 can have a negative refractive power, and the object side surface of the fifth lens 350 can be convex in the paraxial region and the image side surface of the fifth lens 350 can be concave in the paraxial region.

[0265] The sixth lens 360 can have a positive refractive power, and the object side surface and the image side surface of the sixth lens 360 can be convex in the paraxial region.

[0266] The seventh lens 370 can have a negative refractive power, and the object side surface and the image side surface of the seventh lens 370 can be concave in the paraxial region.

[0267] In addition, one inflection point can be formed on the object side surface of the seventh lens 370. For example, the object side surface of the seventh lens 370 can be concave in the paraxial region, and becomes convex toward the edge of the object side surface of the seventh lens 370.

[0268] In addition, one inflection point can be formed on the image side surface of the seventh lens 370. For example, the image side surface of the seventh lens 370 can be concave in the paraxial region, and becomes convex toward the edge of the image side surface of the seventh lens 370.

[0269] Although Figure 5 not shown in FIG. 10, the stop is disposed at a distance of 0.818 mm from the object side surface of the first lens 310 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 3 listed in Table 55 presented later in this application.

[0270] Table 5 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 5 Table 6 below shows the aspherical surface coefficients of the lenses of Figure 5 All of the lenses of Figure 5 except the object side surface of the second lens 320 are aspherical.

[0271] Table 5

[0272]

[0273]

[0274] Table 6

[0275] K A B C D E F G H J S1 -1.0302 0.018188 0.032245 -0.07196 0.112928 -0.10738 0.060719 -0.01872 0.002295 0 S2 9.43023 -0.10102 0.141494 -0.11688 0.038896 0.013478 -0.02044 0.008552 -0.00134 0 S3 0 0 0 0 0 0 0 0 0 0 S4 -0.50537 -0.10697 0.153004 0.009755 -0.29683 0.477095 -0.35748 0.129532 -0.01458 0 S5 0 -0.05254 0.023493 -0.1143 0.214047 -0.26482 0.177126 -0.05517 0.005476 0 S6 -99 -0.11144 0.07916 -0.20212 0.267335 -0.18518 0.019544 0.044285 -0.01687 0 S7 0 -0.20077 0.140611 -0.37803 0.453081 -0.18096 -0.09799 0.111673 -0.02809 0 S8 0 -0.20577 0.304963 -0.59986 0.731946 -0.53515 0.225984 -0.05251 0.005575 0 S9 0 -0.28358 0.467356 -0.47172 0.280955 -0.07421 -0.01626 0.014562 -0.00242 0 S10 2.862598 -0.31693 0.301196 -0.21698 0.125203 -0.05589 0.017401 -0.00325 0.000272 0 S11 -19.5338 -0.07211 -0.00681 0.001046 0.009791 -0.00904 0.002973 -0.00036 8.29E-06 0 S12 -1.13682 0.173265 -0.16996 0.078719 -0.01703 0.000973 0.000343 -7.9E-05 5.3E-06 0 S13 -13.4335 -0.08518 -0.04504 0.056746 -0.02132 0.004215 -0.00048 2.92E-05 -7.6E-07 0 S14 -0.68587 -0.15974 0.072817 -0.02745 0.00783 -0.00164 0.000238 -2.3E-05 1.25E-06 -3E-08

[0276] Fourth Example

[0277] Figure 7 is a view showing a fourth example of an optical imaging system, and Figure 8 shows Figure 7 aberration curves of the optical imaging system of

[0278] A fourth example of an optical imaging system can include a first lens 410, a second lens 420, a third lens 430, a fourth lens 440, a fifth lens 450, a sixth lens 460, a seventh lens 470, a filter 480, an image sensor 490, and a stop (not shown) disposed between the second lens 420 and the third lens 430.

[0279] The first lens 410 can have a positive refractive power, and an object side surface of the first lens 410 can be convex in a paraxial region and an image side surface of the first lens 410 can be concave in the paraxial region.

[0280] The second lens 420 can have a positive refractive power, and an object side surface and an image side surface of the second lens 420 can be convex in a paraxial region.

[0281] The third lens 430 can have a negative refractive power, and an object side surface of the third lens 430 can be convex in a paraxial region and an image side surface of the third lens 430 can be concave in the paraxial region.

[0282] The fourth lens 440 can have a positive refractive power, and an object side surface of the fourth lens 440 can be concave in a paraxial region and an image side surface of the fourth lens 440 can be convex in the paraxial region.

[0283] The fifth lens 450 can have a positive refractive power, and an object side surface of the fifth lens 450 can be convex in a paraxial region and an image side surface of the fifth lens 450 can be concave in the paraxial region.

[0284] The sixth lens 460 can have a negative refractive power, and an object side surface of the sixth lens 460 can be convex in a paraxial region and an image side surface of the sixth lens 460 can be concave in the paraxial region.

[0285] The seventh lens 470 can have a positive refractive power, and an object side surface of the seventh lens 470 can be convex in a paraxial region and an image side surface of the seventh lens 470 can be concave in the paraxial region.

[0286] In addition, two inflection points can be formed on the object side surface of the seventh lens 470. For example, the object side surface of the seventh lens 470 can be convex in a paraxial region, become concave in a region outside the paraxial region, and become convex toward an edge of the object side surface of the seventh lens 470.

[0287] In addition, a concave point can be formed on the image side surface of the seventh lens 470. For example, the image side surface of the seventh lens 470 can be concave in the paraxial region, and become convex toward the edge of the image side surface of the seventh lens 470.

[0288] Although Figure 7 not shown in FIG. 4, the stop is disposed at a distance of 1.160 mm from the object side surface of the first lens 410 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 4 listed in Table 55 presented later in this application.

[0289] Table 7 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 7 Example 4, and Table 8 below shows the aspherical surface coefficients of the lenses of Figure 7 Example 4. Figure 7 Both surfaces of all the lenses of

[0290] Table 7

[0291]

[0292]

[0293] Table 8

[0294] K A B C D E F G H J S1 -7.583 0.0888 -0.119 0.0923 -0.0948 0.0482 -0.003 -0.0042 0.0008 0 S2 -20.327 -0.0066 -0.1632 0.1025 0.0438 -0.0722 0.0262 -0.0005 -0.0011 0 S3 -0.2671 -0.0459 -0.0455 -0.027 0.1584 -0.0377 -0.1072 0.0826 -0.0186 0 S4 0 0.0277 -0.1403 0.1228 0.1799 -0.4927 0.4448 -0.186 0.03 0 S5 -4.5253 -0.0875 0.0631 -0.2483 0.8524 -1.3993 1.2015 -0.5193 0.0898 0 S6 0.5431 -0.123 0.1655 -0.2954 0.5449 -0.6999 0.5654 -0.2554 0.0541 0 S7 0 -0.0243 -0.1085 0.1778 -0.2176 0.2407 -0.2382 0.1432 -0.0356 0 S8 0 -0.0162 -0.1425 0.0788 0.0935 -0.1616 0.0885 -0.0169 0 0 S9 -43.017 0.1677 -0.2344 0.1196 -0.0548 0.0387 -0.0269 0.0094 -0.0012 0 S10 -5.2037 -0.0358 0.0999 -0.2203 0.2016 -0.1066 0.0335 -0.0057 0.0004 0 S11 -1.699 0.0343 -0.2737 0.3209 -0.2494 0.1179 -0.0316 0.0045 -0.0003 0 S12 -0.0013 -0.0989 -0.0458 0.0603 -0.0408 0.0165 -0.0038 0.0005 -2E-05 0 S13 -0.8015 -0.5195 0.2893 -0.1079 0.0311 -0.0069 0.0011 -0.0001 7E-06 -2E-07 S14 -1.2781 -0.3766 0.2432 -0.1184 0.0416 -0.01 0.0016 -0.0002 9E-06 -2E-07

[0295] Fifth Example

[0296] Figure 9 is a view showing a fifth example of an optical imaging system, and Figure 10 shows the aberration curves of the optical imaging system of Figure 9 Example 4.

[0297] The fifth example of the optical imaging system can include a first lens 510, a second lens 520, a third lens 530, a fourth lens 540, a fifth lens 550, a sixth lens 560, a seventh lens 570, a filter 580, an image sensor 590, and a stop (not shown) disposed between the second lens 520 and the third lens 530.

[0298] The first lens 510 can have a positive refractive power, and the object side surface of the first lens 510 can be convex in the paraxial region and the image side surface of the first lens 510 can be concave in the paraxial region.

[0299] The second lens 520 can have a positive refractive power, and the object side surface and the image side surface of the second lens 520 can be convex in the paraxial region.

[0300] The third lens 530 can have a negative refractive power, and the object side surface of the third lens 530 can be convex in the paraxial region and the image side surface of the third lens 530 can be concave in the paraxial region.

[0301] The fourth lens 540 can have a negative refractive power, and the object side surface of the fourth lens 540 can be concave in the paraxial region and the image side surface of the fourth lens 540 can be convex in the paraxial region.

[0302] The fifth lens 550 can have a positive refractive power, and the object side surface of the fifth lens 550 can be convex in the paraxial region and the image side surface of the fifth lens 550 can be concave in the paraxial region.

[0303] The sixth lens 560 can have a negative refractive power, and the object side surface of the sixth lens 560 can be convex in the paraxial region and the image side surface of the sixth lens 560 can be concave in the paraxial region.

[0304] The seventh lens 570 can have a positive refractive power, and the object side surface of the seventh lens 570 can be convex in the paraxial region and the image side surface of the seventh lens 570 can be concave in the paraxial region.

[0305] In addition, two inflection points can be formed on the object side surface of the seventh lens 570. For example, the object side surface of the seventh lens 570 can be convex in the paraxial region, become concave in a region outside the paraxial region, and become convex toward an edge of the object side surface of the seventh lens 570.

[0306] In addition, one inflection point can be formed on the image side surface of the seventh lens 570. For example, the image side surface of the seventh lens 570 can be concave in the paraxial region, and become convex toward an edge of the image side surface of the seventh lens 570.

[0307] Although Figure 9 not shown in FIG. 5, a stop is disposed at a distance of 1.169 mm from the object side surface of the first lens 510 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 5 listed in Table 55 presented later in this application.

[0308] Table 9 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 9 Example 5, and Table 10 below shows the aspherical surface coefficients of the lenses of Figure 9 Example 5. Figure 9 Both surfaces of all the lenses of

[0309] Table 9

[0310]

[0311]

[0312] Table 10

[0313] K A B C D E F G H J S1 -7.5279 0.0857 -0.105 0.0528 -0.0256 -0.0221 0.0379 -0.0166 0.0023 0 S2 -19.893 -0.0142 -0.1337 0.0682 0.0621 -0.0783 0.0306 -0.0031 -0.0006 0 S3 -0.0142 -0.0449 -0.0418 -0.0147 0.1136 0.012 -0.1333 0.0892 -0.0193 0 S4 0 0.0281 -0.189 0.276 -0.0808 -0.2297 0.2908 -0.1382 0.024 0 S5 -6.2325 -0.0763 -0.0054 -0.0795 0.6054 -1.1875 1.107 -0.5047 0.0912 0 S6 0.4782 -0.115 0.1396 -0.2676 0.5637 -0.7991 0.6898 -0.325 0.0682 0 S7 0 -0.0188 -0.0772 0.0717 0.0184 -0.081 0.0225 0.0277 -0.0139 0 S8 0 -0.0127 -0.1356 0.0837 0.0781 -0.1502 0.0847 -0.0163 0 0 S9 -49.08 0.1815 -0.3205 0.2837 -0.2161 0.1317 -0.0595 0.0158 -0.0017 0 S10 -5.4303 -0.0205 0.025 -0.1003 0.1046 -0.0624 0.0222 -0.0043 0.0003 0 S11 -1.136 0.0314 -0.2615 0.3261 -0.2695 0.133 -0.0369 0.0053 -0.0003 0 S12 0.0272 -0.1293 0.0241 5E-05 -0.0123 0.0085 -0.0024 0.0003 -2E-05 0 S13 -0.8 -0.5247 0.2994 -0.1227 0.0414 -0.0108 0.002 -0.0002 2E-05 -4E-07 S14 -1.3207 -0.3666 0.2425 -0.1248 0.0468 -0.0121 0.002 -0.0002 1E-05 -3E-07

[0314] Sixth Example

[0315] Figure 11 is a view showing a sixth example of an optical imaging system, and Figure 12 shows Figure 11 aberration curves of the optical imaging system.

[0316] A sixth example of an optical imaging system can include a first lens 610, a second lens 620, a third lens 630, a fourth lens 640, a fifth lens 650, a sixth lens 660, a seventh lens 670, a filter 680, an image sensor 690, and a stop (not shown) disposed between the first lens 610 and the second lens 620.

[0317] The first lens 610 can have a negative refractive power, and an object side surface of the first lens 610 can be convex in a paraxial region and an image side surface of the first lens 610 can be concave in the paraxial region.

[0318] The second lens 620 can have a positive refractive power, and an object side surface of the second lens 620 can be convex in a paraxial region and an image side surface of the second lens 620 can be concave in the paraxial region.

[0319] The third lens 630 can have a negative refractive power, and an object side surface of the third lens 630 can be convex in a paraxial region and an image side surface of the third lens 630 can be concave in the paraxial region.

[0320] The fourth lens 640 can have a negative refractive power, and an object side surface of the fourth lens 640 can be convex in a paraxial region and an image side surface of the fourth lens 640 can be concave in the paraxial region.

[0321] The fifth lens 650 can have a positive refractive power, and an object side surface of the fifth lens 650 can be convex in a paraxial region and an image side surface of the fifth lens 650 can be concave in the paraxial region.

[0322] The sixth lens 660 can have a positive refractive power, and an object side surface and an image side surface of the sixth lens 660 can be convex in a paraxial region.

[0323] The seventh lens 670 can have a negative refractive power, and an object side surface and an image side surface of the seventh lens 670 can be concave in a paraxial region.

[0324] In addition, one inflection point can be formed on the object side surface of the seventh lens 670. For example, the object side surface of the seventh lens 670 can be concave in a paraxial region, and become convex toward an edge of the object side surface of the seventh lens 670.​

[0325] In addition, a concave point can be formed on the image side surface of the seventh lens 670. For example, the image side surface of the seventh lens 670 can be concave in the paraxial region, and become convex toward the edge of the image side surface of the seventh lens 670.

[0326] Although Figure 11 not shown in FIG. 6, the stop is disposed at a distance of 0.383 mm from the object side surface of the first lens 610 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 6 listed in Table 55 presented later in this application.

[0327] Table 11 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 11 Example 6, and Table 12 below shows the aspherical surface coefficients of the lenses of Figure 11 Example 6. Figure 11 Both surfaces of all the lenses of

[0328] Table 11

[0329]

[0330] Table 12

[0331]

[0332]

[0333] Seventh Example

[0334] Figure 13 is a view showing a seventh example of an optical imaging system, and Figure 14 shows the aberration curves of the optical imaging system of Figure 13 Example 6.

[0335] The seventh example of the optical imaging system can include a first lens 710, a second lens 720, a third lens 730, a fourth lens 740, a fifth lens 750, a sixth lens 760, a seventh lens 770, a filter 780, an image sensor 790, and a stop (not shown) disposed between the first lens 710 and the second lens 720.

[0336] The first lens 710 can have a negative refractive power, and the object side surface of the first lens 710 can be convex in the paraxial region and the image side surface of the first lens 710 can be concave in the paraxial region.

[0337] The second lens 720 can have a positive refractive power, and the object side surface of the second lens 720 can be convex in the paraxial region and the image side surface of the second lens 720 can be concave in the paraxial region.

[0338] The third lens 730 can have a negative refractive power, and the object side surface of the third lens 730 can be convex in the paraxial region and the image side surface of the third lens 730 can be concave in the paraxial region.

[0339] The fourth lens 740 can have a negative refractive power, and the object side surface of the fourth lens 740 can be convex in the paraxial region and the image side surface of the fourth lens 740 can be concave in the paraxial region.

[0340] The fifth lens 750 can have a positive refractive power, and the object side surface of the fifth lens 750 can be convex in the paraxial region and the image side surface of the fifth lens 750 can be concave in the paraxial region.

[0341] The sixth lens 760 can have a positive refractive power, and the object side surface and the image side surface of the sixth lens 760 can be convex in the paraxial region.

[0342] The seventh lens 770 can have a negative refractive power, and the object side surface and the image side surface of the seventh lens 770 can be concave in the paraxial region.

[0343] In addition, one inflection point can be formed on the object side surface of the seventh lens 770. For example, the object side surface of the seventh lens 770 can be concave in the paraxial region, and become convex toward the edge of the object side surface of the seventh lens 770.

[0344] In addition, one inflection point can be formed on the image side surface of the seventh lens 770. For example, the image side surface of the seventh lens 770 can be concave in the paraxial region, and become convex toward the edge of the image side surface of the seventh lens 770.

[0345] Although Figure 13 not shown in FIG. 7, a stop is disposed at a distance of 0.351 mm from the object side surface of the first lens 710 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 7 listed in Table 55 presented later in this application.

[0346] The following Table 13 shows the physical properties of the lenses and other elements constituting the optical imaging system of Example 7, and the following Table 14 shows the aspherical surface coefficients of the lenses of Example 7. Figure 13 Figure 13 The following Table 13 shows the physical properties of the lenses and other elements constituting the optical imaging system of Example 7, and the following Table 14 shows the aspherical surface coefficients of the lenses of Example 7. Figure 13 Both surfaces of all the lenses of Example 7 are aspherical.

[0347] Table 13

[0348]

[0349] Table 14

[0350] ​

[0351]

[0352] Eighth Example

[0353] Figure 15 is a view showing an eighth example of an optical imaging system, and Figure 16 shows Figure 15 aberration curves of the optical imaging system of Equation 1.

[0354] An eighth example of an optical imaging system can include a first lens 810, a second lens 820, a third lens 830, a fourth lens 840, a fifth lens 850, a sixth lens 860, a seventh lens 870, a filter 880, an image sensor 890, and a stop (not shown) disposed between the first lens 810 and the second lens 820.

[0355] The first lens 810 can have a negative refractive power, and an object side surface of the first lens 810 can be convex in a paraxial region and an image side surface of the first lens 810 can be concave in the paraxial region.

[0356] The second lens 820 can have a positive refractive power, and an object side surface of the second lens 820 can be convex in a paraxial region and an image side surface of the second lens 820 can be concave in the paraxial region.

[0357] The third lens 830 can have a negative refractive power, and an object side surface of the third lens 830 can be convex in a paraxial region and an image side surface of the third lens 830 can be concave in the paraxial region.

[0358] The fourth lens 840 can have a negative refractive power, and an object side surface of the fourth lens 840 can be convex in a paraxial region and an image side surface of the fourth lens 840 can be concave in the paraxial region.

[0359] The fifth lens 850 can have a positive refractive power, and an object side surface of the fifth lens 850 can be convex in a paraxial region and an image side surface of the fifth lens 850 can be concave in the paraxial region.

[0360] The sixth lens 860 can have a positive refractive power, and an object side surface and an image side surface of the sixth lens 860 can be convex in a paraxial region.

[0361] The seventh lens 870 can have a negative refractive power, and an object side surface and an image side surface of the seventh lens 870 can be concave in a paraxial region.

[0362] In addition, one inflection point can be formed on the object side surface of the seventh lens 870. For example, the object side surface of the seventh lens 870 can be concave in a paraxial region, and become convex toward an edge of the object side surface of the seventh lens 870.

[0363] In addition, a concave point can be formed on the image side surface of the seventh lens 870. For example, the image side surface of the seventh lens 870 can be concave in the paraxial region, and become convex toward the edge of the image side surface of the seventh lens 870.

[0364] Although Figure 15 not shown in FIG. 9, the stop is disposed at a distance of 0.336 mm from the object side surface of the first lens 810 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 8 listed in Table 55 presented later in this application.

[0365] Table 15 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 15 Example 8, and Table 16 below shows the aspherical surface coefficients of the lenses of Figure 15 Example 8. Figure 15 Both surfaces of all the lenses of Example 8 are aspherical.

[0366] Table 15

[0367]

[0368] Table 16

[0369]

[0370]

[0371] Ninth Example

[0372] Figure 17 FIG. 9 is a view showing a ninth example of an optical imaging system, and Figure 18 FIG. 10 shows the aberration curves of the optical imaging system of Figure 17 Example 8.

[0373] The ninth example of the optical imaging system can include a first lens 910, a second lens 920, a third lens 930, a fourth lens 940, a fifth lens 950, a sixth lens 960, a seventh lens 970, a filter 980, an image sensor 990, and a stop (not shown) disposed between the first lens 910 and the second lens 920.

[0374] The first lens 910 can have a positive refractive power, and the object side surface of the first lens 910 can be convex in the paraxial region and the image side surface of the first lens 910 can be concave in the paraxial region.

[0375] The second lens 920 can have a negative refractive power, and the object side surface of the second lens 920 can be convex in the paraxial region and the image side surface of the second lens 920 can be concave in the paraxial region.

[0376] The third lens 930 can have a negative refractive power, and the object side surface of the third lens 930 can be convex in the paraxial region and the image side surface of the third lens 930 can be concave in the paraxial region.

[0377] The fourth lens 940 can have a positive refractive power, and the object side surface of the fourth lens 940 can be convex in the paraxial region and the image side surface of the fourth lens 940 can be concave in the paraxial region.

[0378] The fifth lens 950 can have a negative refractive power, and the object side surface of the fifth lens 950 can be concave in the paraxial region and the image side surface of the fifth lens 950 can be convex in the paraxial region.

[0379] The sixth lens 960 can have a positive refractive power, and the object side surface and the image side surface of the sixth lens 960 can be convex in the paraxial region.

[0380] The seventh lens 970 can have a negative refractive power, and the object side surface and the image side surface of the seventh lens 970 can be concave in the paraxial region.

[0381] In addition, one inflection point can be formed on the object side surface of the seventh lens 970. For example, the object side surface of the seventh lens 970 can be concave in the paraxial region, and becomes convex toward the edge of the object side surface of the seventh lens 970.

[0382] In addition, one inflection point can be formed on the image side surface of the seventh lens 970. For example, the image side surface of the seventh lens 970 can be concave in the paraxial region, and becomes convex toward the edge of the image side surface of the seventh lens 970.

[0383] Although Figure 17 not shown in FIG. 10, the stop is disposed at a distance of 0.731 mm from the object side surface of the first lens 910 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 9 listed in Table 55 presented later in this application.

[0384] Table 17 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Example 1, and Table 18 below shows the aspherical surface coefficients of the lenses of Example 1. Figure 17 Figure 17 All the lenses of Example 1 have two aspherical surfaces. Figure 17

[0385] Table 17

[0386]

[0387] Table 18

[0388] K A B C D E F G H J S1 -0.7464 0.01386 0.03443 -0.0749 0.10292 -0.0706 0.01727 0.00423 -0.0023 0 S2 36.6688 -0.0823 0.19496 -0.3067 0.36336 -0.323 0.19024 -0.0632 0.00855 0 S3 -1.3559 -0.1603 0.33047 -0.4059 0.33245 -0.1787 0.06728 -0.0166 0.00178 0 S4 -0.4109 -0.0907 0.14443 0.1155 -0.7969 1.50089 -1.4406 0.72187 -0.147 0 S5 0 -0.0739 0.04629 -0.1203 0.11651 -0.0578 -0.0089 0.02328 -0.0057 0 S6 0 -0.0932 0.00341 0.05212 -0.1827 0.24566 -0.2173 0.11261 -0.0241 0 S7 25.1476 -0.1235 -0.1887 0.37626 -0.554 0.67306 -0.5796 0.27819 -0.0538 0 S8 -99 -9E-05 -0.3274 0.35885 -0.3195 0.34506 -0.2608 0.09954 -0.0144 0 S9 -70.894 0.02055 0.04825 -0.5284 0.75832 -0.4915 0.16359 -0.0271 0.00175 0 S10 2.28319 0.17594 -0.3448 0.22829 -0.0716 0.01095 -0.0007 -4E-06 1.4E-06 0 S11 -99 0.11875 -0.2169 0.16747 -0.0871 0.02755 -0.0049 0.00045 -2E-05 0 S12 -3.3067 0.16436 -0.1849 0.1159 -0.049 0.01383 -0.0024 0.00023 -9E-06 0 S13 -2.4772 -0.1026 -0.0482 0.07401 -0.0308 0.00666 -0.0008 5.5E-05 -2E-06 0 S14 -1.1028 -0.2935 0.20325 -0.1127 0.04574 -0.0129 0.0024 -0.0003 1.8E-05 -5E-07 ​​

[0389] Tenth Example

[0390] Figure 19 is a view showing a tenth example of an optical imaging system, and Figure 20 aberration curves of the optical imaging system of Figure 19 are shown.

[0391] The tenth example of the optical imaging system can include a first lens 1010, a second lens 1020, a third lens 1030, a fourth lens 1040, a fifth lens 1050, a sixth lens 1060, a seventh lens 1070, a filter 1080, an image sensor 1090, and a stop (not shown) disposed between the first lens 1010 and the second lens 1020.

[0392] The first lens 1010 can have a positive refractive power, and an object side surface of the first lens 1010 can be convex in a paraxial region and an image side surface of the first lens 1010 can be concave in the paraxial region.

[0393] The second lens 1020 can have a negative refractive power, and an object side surface of the second lens 1020 can be convex in a paraxial region and an image side surface of the second lens 1020 can be concave in the paraxial region.

[0394] The third lens 1030 can have a negative refractive power, and an object side surface of the third lens 1030 can be convex in a paraxial region and an image side surface of the third lens 1030 can be concave in the paraxial region.

[0395] The fourth lens 1040 can have a positive refractive power, and an object side surface of the fourth lens 1040 can be convex in a paraxial region and an image side surface of the fourth lens 1040 can be concave in the paraxial region.

[0396] The fifth lens 1050 can have a negative refractive power, and an object side surface of the fifth lens 1050 can be concave in a paraxial region and an image side surface of the fifth lens 1050 can be convex in the paraxial region.

[0397] The sixth lens 1060 can have a positive refractive power, and an object side surface and an image side surface of the sixth lens 1060 can be convex in a paraxial region.

[0398] The seventh lens 1070 can have a negative refractive power, and an object side surface and an image side surface of the seventh lens 1070 can be concave in a paraxial region.

[0399] In addition, one inflection point can be formed on the object side surface of the seventh lens 1070. For example, the object side surface of the seventh lens 1070 can be concave in a paraxial region, and become convex toward an edge of the object side surface of the seventh lens 1070.

[0400] In addition, a concave point can be formed on the image side surface of the seventh lens 1070. For example, the image side surface of the seventh lens 1070 can be concave in the paraxial region, and become convex toward the edge of the image side surface of the seventh lens 1070.

[0401] Although Figure 19 not shown in FIG. 11, the stop is disposed at a distance of 0.690 mm from the object side surface of the first lens 1110 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 10 listed in Table 55 presented later in this application.

[0402] The following Table 19 shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 19 Example 11, and the following Table 20 shows the aspherical surface coefficients of the lenses of Figure 19 Example 11. Figure 19 Both surfaces of all the lenses of

[0403] Table 19

[0404]

[0405]

[0406] Table 20

[0407] K A B C D E F G H J S1 -0.7799 0.01197 0.05018 -0.1139 0.15402 -0.1058 0.0277 0.00415 -0.0027 0 S2 47.9347 -0.0683 0.17293 -0.3083 0.40045 -0.3589 0.19954 -0.0605 0.0074 0 S3 1.68169 -0.1465 0.29389 -0.3639 0.28524 -0.0978 -0.0255 0.03457 -0.0087 0 S4 -0.5294 -0.0931 0.17548 -0.0689 -0.2817 0.70925 -0.7504 0.40105 -0.0855 0 S5 0 -0.0692 0.02762 -0.0586 0.02149 0.04226 -0.0786 0.05249 -0.0116 0 S6 0 -0.0923 0.00494 0.02984 -0.1124 0.16118 -0.1632 0.09263 -0.0206 0 S7 25.6946 -0.1416 -0.0429 -0.049 0.12511 0.02541 -0.2058 0.15568 -0.0361 0 S8 -99 0.00488 -0.296 0.32057 -0.3817 0.48577 -0.3607 0.13074 -0.0181 0 S9 -70.539 -0.0878 0.24262 -0.6812 0.81506 -0.4953 0.1593 -0.0257 0.00163 0 S10 1.48962 0.12295 -0.2057 0.12659 -0.0423 0.00892 -0.0013 0.00012 -5E-06 0 S11 -99 0.113 -0.1689 0.11533 -0.0542 0.01559 -0.0025 0.00021 -7E-06 0 S12 -2.8554 0.10708 -0.1088 0.05801 -0.0206 0.0049 -0.0007 5.7E-05 -2E-06 0 S13 -2.6312 -0.0807 -0.0543 0.06724 -0.0264 0.0055 -0.0007 4.3E-05 -1E-06 0 S14 -1.0845 -0.2364 0.13321 -0.0576 0.0184 -0.0041 0.00062 -6E-05 3.2E-06 -7E-08

[0408] Eleventh Example

[0409] Figure 21 is a view showing the eleventh example of an optical imaging system, and Figure 22 shows the aberration curves of the optical imaging system of Figure 21 Example 11.

[0410] The eleventh example of the optical imaging system can include a first lens 1110, a second lens 1120, a third lens 1130, a fourth lens 1140, a fifth lens 1150, a sixth lens 1160, a seventh lens 1170, a filter 1180, an image sensor 1190, and a stop (not shown) disposed between the first lens 1110 and the second lens 1120.

[0411] The first lens 1110 can have a positive refractive power, and the object side surface of the first lens 1110 can be convex in the paraxial region and the image side surface of the first lens 1110 can be concave in the paraxial region.

[0412] The second lens 1120 can have a negative refractive power, and the object side surface of the second lens 1120 can be convex in the paraxial region and the image side surface of the second lens 1120 can be concave in the paraxial region.

[0413] The third lens 1130 can have a negative refractive power, and the object side surface of the third lens 1130 can be convex in the paraxial region and the image side surface of the third lens 1130 can be concave in the paraxial region.

[0414] The fourth lens 1140 can have a positive refractive power, and the object side surface of the fourth lens 1140 can be convex in the paraxial region and the image side surface of the fourth lens 1140 can be concave in the paraxial region.

[0415] The fifth lens 1150 can have a negative refractive power, and the object side surface of the fifth lens 1150 can be concave in the paraxial region and the image side surface of the fifth lens 1150 can be convex in the paraxial region.

[0416] The sixth lens 1160 can have a positive refractive power, and the object side surface and the image side surface of the sixth lens 1160 can be convex in the paraxial region.

[0417] The seventh lens 1170 can have a negative refractive power, and the object side surface and the image side surface of the seventh lens 1170 can be concave in the paraxial region.

[0418] In addition, one inflection point can be formed on the object side surface of the seventh lens 1170. For example, the object side surface of the seventh lens 1170 can be concave in the paraxial region, and becomes convex toward the edge of the object side surface of the seventh lens 1170.

[0419] In addition, one inflection point can be formed on the image side surface of the seventh lens 1170. For example, the image side surface of the seventh lens 1170 can be concave in the paraxial region, and becomes convex toward the edge of the image side surface of the seventh lens 1170.

[0420] Although Figure 21 not shown in Table 1, the stop is disposed at a distance of 0.726 mm from the object side surface of the first lens 1110 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 11 listed in Table 55 presented later in this application.

[0421] Table 21 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Example 1, and Table 22 below shows the aspherical surface coefficients of the lenses of Example 1. Figure 21 Figure 21 All of the lenses of Example 1 have two aspherical surfaces. Figure 21

[0422] Table 21

[0423]

[0424] ​​

[0425] Table 22

[0426] K A B C D E F G H J S1 -0.8043 0.01289 0.03726 -0.0816 0.11409 -0.089 0.03652 -0.0062 -0.0001 0 S2 51.3479 -0.0483 0.05093 0.0719 -0.2927 0.39068 -0.2714 0.0975 -0.0144 0 S3 3.11156 -0.1249 0.178 -0.0145 -0.3397 0.56985 -0.443 0.17445 -0.0279 0 S4 -0.6552 -0.0793 0.09873 0.18501 -0.7911 1.31375 -1.1601 0.5393 -0.1015 0 S5 0 -0.066 0.06134 -0.18 0.24321 -0.2015 0.08626 -0.0114 -0.0009 0 S6 0 -0.0855 -0.0306 0.18152 -0.4356 0.54102 -0.4166 0.18221 -0.0336 0 S7 25.5599 -0.1157 -0.2609 0.66152 -1.0774 1.19203 -0.8541 0.34504 -0.0583 0 S8 -99 0.0276 -0.4662 0.78122 -1.0595 1.08297 -0.6699 0.21615 -0.0277 0 S9 -74.927 -0.0825 0.26638 -0.7895 0.98252 -0.6232 0.21113 -0.0363 0.0025 0 S10 1.48962 0.15316 -0.249 0.16958 -0.0655 0.01574 -0.0024 0.00021 -8E-06 0 S11 -99 0.09288 -0.1748 0.13327 -0.0666 0.02003 -0.0034 0.00029 -1E-05 0 S12 -2.4857 0.11037 -0.1344 0.07896 -0.0304 0.00781 -0.0012 0.00011 -4E-06 0 S13 -2.6312 -0.0289 -0.1097 0.09541 -0.0347 0.00705 -0.0008 5.5E-05 -2E-06 0 S14 -1.0845 -0.2256 0.1217 -0.0516 0.01635 -0.0037 0.00055 -5E-05 2.8E-06 -7E-08

[0427] Twelfth Example

[0428] Figure 23 is a view showing a twelfth example of an optical imaging system, and Figure 24 aberration curves of the optical imaging system of Figure 23

[0429] The twelfth example of the optical imaging system can include a first lens 1210, a second lens 1220, a third lens 1230, a fourth lens 1240, a fifth lens 1250, a sixth lens 1260, a seventh lens 1270, a filter 1280, an image sensor 1290, and a stop (not shown) disposed between the second lens 1220 and the third lens 1230.

[0430] The first lens 1210 can have a positive refractive power, and an object side surface of the first lens 1210 can be convex in a paraxial region and an image side surface of the first lens 1210 can be concave in the paraxial region.

[0431] The second lens 1220 can have a positive refractive power, and an object side surface and an image side surface of the second lens 1220 can be convex in a paraxial region.

[0432] The third lens 1230 can have a negative refractive power, and an object side surface of the third lens 1230 can be convex in a paraxial region and an image side surface of the third lens 1230 can be concave in the paraxial region.

[0433] The fourth lens 1240 can have a negative refractive power, and an object side surface of the fourth lens 1240 can be convex in a paraxial region and an image side surface of the fourth lens 1240 can be concave in the paraxial region.

[0434] The fifth lens 1250 can have a positive refractive power, and an object side surface of the fifth lens 1250 can be convex in a paraxial region and an image side surface of the fifth lens 1250 can be concave in the paraxial region.

[0435] The sixth lens 1260 can have a negative refractive power, and an object side surface of the sixth lens 1260 can be convex in a paraxial region and an image side surface of the sixth lens 1260 can be concave in the paraxial region.

[0436] The seventh lens 1270 can have a negative refractive power, and an object side surface of the seventh lens 1270 can be convex in a paraxial region and an image side surface of the seventh lens 1270 can be concave in the paraxial region.

[0437] ​Additionally, two inflection points can be formed on the object-side surface of the seventh lens 1270. For example, the object-side surface of the seventh lens 1270 can bulge in the paraxial region, become concave in the region outside the paraxial region, and bulge towards the edge of the object-side surface of the seventh lens 1270.

[0438] Additionally, a recurved point can be formed on the image-side surface of the seventh lens 1270. For example, the image-side surface of the seventh lens 1270 can be concave in the paraxial region and convex towards the edge of the image-side surface of the seventh lens 1270.

[0439] although Figure 23 The aperture is not shown, but it is set at a distance of 1.158 mm from the object side of the first lens 1210 toward the image side of the optical imaging system. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 12 listed in Table 55, which will be presented later in this application.

[0440] Table 23 below shows the composition Figure 23 The physical properties of the lenses and other components of the optical imaging system are shown in Table 24 below. Figure 23 The aspherical surface coefficient of the lens. Figure 23 Both surfaces of all the lenses are aspherical.

[0441] Table 23

[0442]

[0443]

[0444] Table 24

[0445] K A B C D E F G H J S1 -8.038 0.07067 -0.0797 0.03339 0.00722 -0.0491 0.04654 -0.0186 0.00318 -0.0002 S2 -20.594 -0.0019 -0.1494 0.20409 -0.2922 0.37549 -0.3085 0.14861 -0.0387 0.0042 S3 -0.0908 -0.0339 -0.0641 0.13679 -0.2821 0.49215 -0.4815 0.26054 -0.0746 0.00881 S4 -0.4822 -0.0436 0.17605 -0.3256 0.19989 0.1916 -0.4291 0.32034 -0.1141 0.01622 S5 -1.1841 -0.1073 0.25445 -0.4683 0.49912 -0.2863 0.05651 0.03245 -0.0229 0.00442 S6 0.87331 -0.0693 0.03569 0.20478 -0.8833 1.73278 -1.9742 1.34645 -0.5106 0.08302 S7 -0.4999 -0.0314 0.01347 -0.2894 0.97164 -1.7181 1.79234 -1.1152 0.38365 -0.0563 S8 -1E-06 -0.0273 -0.1177 0.21199 -0.2544 0.21565 -0.1264 0.04694 -0.0093 0.0007 S9 -41.843 0.16235 -0.3487 0.40163 -0.3105 0.13962 -0.027 -0.0038 0.00264 -0.0003 S10 -5.1424 0.03971 -0.1364 0.15688 -0.1229 0.06333 -0.0212 0.0044 -0.0005 2.6E-05 S11 -2.1666 0.03558 -0.1809 0.19853 -0.1438 0.06411 -0.0173 0.00275 -0.0002 9E-06 S12 -0.0207 -0.1043 0.02386 -0.0063 -0.0007 0.00066 -3E-06 -4E-05 7.3E-06 -4E-07 S13 -0.7948 -0.4128 0.18634 -0.0516 0.01005 -0.0015 0.00016 -1E-05 6.2E-07 -1E-08 S14 -1.3226 -0.3105 0.17125 -0.0712 0.02129 -0.0043 0.00058 -5E-05 2.3E-06 -5E-08

[0446] Thirteenth Example

[0447] Figure 25 This is a view illustrating a thirteenth example of an optical imaging system, and Figure 26 It shows Figure 25 Aberration curves of optical imaging systems.

[0448] A thirteenth example of an optical imaging system may include a first lens 1310, a second lens 1320, a third lens 1330, a fourth lens 1340, a fifth lens 1350, a sixth lens 1360, a seventh lens 1370, a filter 1380, an image sensor 1390, and an aperture (not shown) disposed between the second lens 1320 and the third lens 1330.

[0449] The first lens 1310 can have a positive refractive power, and the object side surface of the first lens 1310 can be convex in the paraxial region and the image side surface of the first lens 1310 can be concave in the paraxial region.

[0450] The second lens 1320 can have a positive refractive power, and the object side surface and the image side surface of the second lens 1320 can be convex in the paraxial region.

[0451] The third lens 1330 can have a negative refractive power, and the object side surface of the third lens 1330 can be convex in the paraxial region and the image side surface of the third lens 1330 can be concave in the paraxial region.

[0452] The fourth lens 1340 can have a positive refractive power, and the object side surface of the fourth lens 1340 can be convex in the paraxial region and the image side surface of the fourth lens 1340 can be concave in the paraxial region.

[0453] The fifth lens 1350 can have a positive refractive power, and the object side surface of the fifth lens 1350 can be convex in the paraxial region and the image side surface of the fifth lens 1350 can be concave in the paraxial region.

[0454] The sixth lens 1360 can have a negative refractive power, and the object side surface of the sixth lens 1360 can be convex in the paraxial region and the image side surface of the sixth lens 1360 can be concave in the paraxial region.

[0455] The seventh lens 1370 can have a negative refractive power, and the object side surface of the seventh lens 1370 can be convex in the paraxial region and the image side surface of the seventh lens 1370 can be concave in the paraxial region.

[0456] In addition, two inflection points can be formed on the object side surface of the seventh lens 1370. For example, the object side surface of the seventh lens 1370 can be convex in the paraxial region, become concave in a region outside the paraxial region, and become convex toward an edge of the object side surface of the seventh lens 1370.

[0457] In addition, one inflection point can be formed on the image side surface of the seventh lens 1370. For example, the image side surface of the seventh lens 1370 can be concave in the paraxial region and become convex toward an edge of the image side surface of the seventh lens 1370.

[0458] Although Figure 25 Although not shown in Table 1, a stop is disposed at a distance of 1.199 mm from the object side surface of the first lens 1310 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 13 listed in Table 55 presented later in this application.

[0459] Table 25 below shows the constituent Figure 25the physical properties of the lenses and other elements of the optical imaging system of FIG. 1, and Table 26 below shows Figure 25 the aspheric surface coefficients of the lenses of FIG. 1. Figure 25 Both surfaces of all the lenses of FIG. 1 are aspheric.

[0460] Table 25

[0461]

[0462]

[0463] Table 26

[0464] K A B C D E F G H J S1 -1 -0.0025 -0.0098 0.01527 -0.0556 0.09254 -0.0925 0.05356 -0.0163 0.00201 S2 -12.778 -0.0004 -0.1137 0.24524 -0.5515 0.82945 -0.7417 0.38903 -0.1114 0.01344 S3 -1.5504 -0.0322 -0.0682 0.18501 -0.5146 0.9207 -0.9127 0.51588 -0.1579 0.02023 S4 -7.0537 -0.0404 0.29676 -1.2693 2.88262 -3.9202 3.31284 -1.6974 0.47955 -0.0571 S5 13.4217 -0.1043 0.54877 -2.1153 4.90531 -7.1106 6.4814 -3.6045 1.11764 -0.1481 S6 0.76614 -0.0811 0.31536 -1.241 3.19858 -5.2874 5.51634 -3.5023 1.23595 -0.1856 S7 -8.3969 -0.0517 -0.0407 0.14681 -0.3147 0.35116 -0.1879 0.00842 0.03459 -0.0102 S8 6.05573 -0.0665 -0.0069 0.01518 -0.01 -0.044 0.09308 -0.0777 0.03087 -0.0047 S9 -43.417 0.02293 -0.0192 -0.0479 0.09183 -0.0953 0.05836 -0.0215 0.00436 -0.0004 S10 -1.2708 0.04581 -0.1581 0.19889 -0.1589 0.08059 -0.0262 0.0053 -0.0006 3E-05 S11 -16.611 0.11516 -0.2515 0.23819 -0.1502 0.06085 -0.0155 0.00238 -0.0002 7.4E-06 S12 0.08869 -0.0573 -0.0313 0.03451 -0.02 0.00672 -0.0013 0.00014 -7E-06 7.4E-08 S13 -0.815 -0.3784 0.16737 -0.0506 0.01278 -0.0027 0.00044 -5E-05 2.7E-06 -7E-08 S14 -1.3724 -0.2775 0.15305 -0.0638 0.01949 -0.0041 0.00058 -5E-05 2.6E-06 -6E-08

[0465] Fourteenth Example

[0466] Figure 27 is a view showing a fourteenth example of an optical imaging system, and Figure 28 shows Figure 27 aberration curves of the optical imaging system of FIG. 1.

[0467] A fourteenth example of an optical imaging system can include a first lens 1410, a second lens 1420, a third lens 1430, a fourth lens 1440, a fifth lens 1450, a sixth lens 1460, a seventh lens 1470, a filter 1480, an image sensor 1490, and a stop (not shown) disposed between the second lens 1420 and the third lens 1430.

[0468] The first lens 1410 can have a positive refractive power, and an object side surface of the first lens 1410 can be convex in a paraxial region and an image side surface of the first lens 1410 can be concave in the paraxial region.

[0469] The second lens 1420 can have a positive refractive power, and an object side surface of the second lens 1420 can be convex in a paraxial region and an image side surface of the second lens 1420 can be concave in the paraxial region.

[0470] The third lens 1430 can have a negative refractive power, and an object side surface of the third lens 1430 can be convex in a paraxial region and an image side surface of the third lens 1430 can be concave in the paraxial region.

[0471] The fourth lens 1440 can have a positive refractive power, and an object side surface of the fourth lens 1440 can be convex in a paraxial region and an image side surface of the fourth lens 1440 can be concave in the paraxial region.

[0472] The fifth lens 1450 can have a negative refractive power, and an object side surface of the fifth lens 1450 can be convex in a paraxial region and an image side surface of the fifth lens 1450 can be concave in the paraxial region.

[0473] The sixth lens 1460 can have a positive refractive power, and the object side surface of the sixth lens 1460 can be convex in the paraxial region and the image side surface of the sixth lens 1460 can be concave in the paraxial region.

[0474] The seventh lens 1470 can have a negative refractive power, and the object side surface of the seventh lens 1470 can be convex in the paraxial region and the image side surface of the seventh lens 1470 can be concave in the paraxial region.

[0475] In addition, two inflection points can be formed on the object side surface of the seventh lens 1470. For example, the object side surface of the seventh lens 1470 can be convex in the paraxial region, become concave in a region outside the paraxial region, and become convex toward the edge of the object side surface of the seventh lens 1470.

[0476] In addition, one inflection point can be formed on the image side surface of the seventh lens 1470. For example, the image side surface of the seventh lens 1470 can be concave in the paraxial region, and become convex toward the edge of the image side surface of the seventh lens 1470.

[0477] Although Figure 27 not shown in Table 52, a stop is disposed at a distance of 1.077 mm from the object side surface of the first lens 1410 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 14 listed in Table 55 presented later in this application.

[0478] Table 27 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 27 Table 28 below shows the aspherical surface coefficients of the lenses of Figure 27 Table 28 below shows the aspherical surface coefficients of the lenses of Figure 27 Both surfaces of all the lenses of

[0479] Table 27

[0480]

[0481] Table 28

[0482] K A B C D E F G H J S1 -1 -0.0103 0.00782 -0.0588 0.09254 -0.0904 0.0486 -0.0119 0.00038 0.00021 S2 -13.05 0.02575 -0.1274 0.03504 0.06172 -0.0405 0.00034 0.0049 -0.0007 -0.0001 S3 -1.2154 -0.0166 -0.0602 -0.0171 0.06247 0.04814 -0.1007 0.05111 -0.0092 0.00015 S4 -7.0515 -0.047 0.26813 -0.8387 1.45463 -1.5426 1.02637 -0.4201 0.09736 -0.0099 S5 8.8287 -0.0982 0.31064 -0.8268 1.45377 -1.7174 1.3464 -0.6715 0.1944 -0.025 S6 1.72172 -0.0695 0.09394 -0.1196 0.14214 -0.2108 0.2773 -0.2257 0.09968 -0.0182 S7 -1.4309 -0.0448 -0.0056 0.02993 -0.0484 -0.0039 0.08562 -0.1013 0.05106 -0.0095 S8 5.85918 -0.0455 -0.0133 0.03368 -0.0729 0.09223 -0.0766 0.04111 -0.0128 0.00184 S9 -43.521 0.00081 -0.0239 0.02218 -0.0173 0.00514 -0.0002 -0.0003 5.4E-05 4.8E-06 S10 -11.855 -0.0163 -0.0578 0.08324 -0.067 0.0334 -0.0109 0.00227 -0.0003 1.4E-05 S11 -16.199 0.10244 -0.1959 0.19307 -0.1564 0.07971 -0.0243 0.00436 -0.0004 1.8E-05 S12 0.16678 -0.0913 0.11002 -0.1075 0.05366 -0.0157 0.00287 -0.0003 2.1E-05 -6E-07 S13 -0.8022 -0.4375 0.2118 -0.049 0.00155 0.00209 -0.0006 7E-05 -4E-06 1.1E-07 S14 -1.407 -0.3709 0.24995 -0.1268 0.04606 -0.0114 0.00184 -0.0002 1.1E-05 -3E-07

[0483] Fifteenth Example

[0484] Figure 29 is a view showing a fifteenth example of an optical imaging system, and Figure 30 shows the aberration curves of the optical imaging system of Figure 29

[0485] ​A fifteenth example of an optical imaging system can include a first lens 1510, a second lens 1520, a third lens 1530, a fourth lens 1540, a fifth lens 1550, a sixth lens 1560, a seventh lens 1570, a filter 1580, an image sensor 1590, and a stop (not shown) disposed between the second lens 1520 and the third lens 1530.

[0486] The first lens 1510 can have a positive refractive power, and an object side surface of the first lens 1510 can be convex in a paraxial region and an image side surface of the first lens 1510 can be concave in the paraxial region.

[0487] The second lens 1520 can have a negative refractive power, and an object side surface of the second lens 1520 can be convex in a paraxial region and an image side surface of the second lens 1520 can be concave in the paraxial region.

[0488] The third lens 1530 can have a positive refractive power, and an object side surface of the third lens 1530 can be convex in a paraxial region and an image side surface of the third lens 1530 can be concave in the paraxial region.

[0489] The fourth lens 1540 can have a positive refractive power, and an object side surface of the fourth lens 1540 can be convex in a paraxial region and an image side surface of the fourth lens 1540 can be concave in the paraxial region.

[0490] The fifth lens 1550 can have a negative refractive power, and an object side surface of the fifth lens 1550 can be concave in a paraxial region and an image side surface of the fifth lens 1550 can be convex in the paraxial region.

[0491] The sixth lens 1560 can have a positive refractive power, and an object side surface of the sixth lens 1560 can be convex in a paraxial region and an image side surface of the sixth lens 1560 can be concave in the paraxial region.

[0492] The seventh lens 1570 can have a negative refractive power, and an object side surface of the seventh lens 1570 can be convex in a paraxial region and an image side surface of the seventh lens 1570 can be concave in the paraxial region.

[0493] In addition, two inflection points can be formed on the object side surface of the seventh lens 1570. For example, the object side surface of the seventh lens 1570 can be convex in a paraxial region, become concave in a region outside the paraxial region, and become convex toward an edge of the object side surface of the seventh lens 1570.

[0494] In addition, one inflection point can be formed on the image side surface of the seventh lens 1570. For example, the image side surface of the seventh lens 1570 can be concave in a paraxial region, and become convex toward an edge of the image side surface of the seventh lens 1570.

[0495] Although Figure 29The aperture is not shown, but it is set at a distance of 1.093 mm from the object side of the first lens 1510 toward the image side of the optical imaging system. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 15 listed in Table 55, which will be presented later in this application.

[0496] Table 29 below shows the composition Figure 29 The physical properties of the lenses and other components of the optical imaging system are shown in Table 30 below. Figure 29 The aspherical surface coefficient of the lens. Figure 29 Both surfaces of all the lenses are aspherical.

[0497] Table 29

[0498]

[0499] Table 30

[0500]

[0501]

[0502] Sixteenth Example

[0503] Figure 31 This is a view showing the sixteenth example of an optical imaging system, and Figure 32 It shows Figure 31 Aberration curves of optical imaging systems.

[0504] A sixteenth example of an optical imaging system may include a first lens 1610, a second lens 1620, a third lens 1630, a fourth lens 1640, a fifth lens 1650, a sixth lens 1660, a seventh lens 1670, a filter 1680, an image sensor 1690, and an aperture (not shown) disposed between the second lens 1620 and the third lens 1630.

[0505] The first lens 1610 may have positive refractive power, and the object side of the first lens 1610 may bulge in the paraxial region and the image side of the first lens 1610 may be concave in the paraxial region.

[0506] The second lens 1620 may have negative refractive power, and the object side of the second lens 1620 may bulge in the paraxial region and the image side of the second lens 1620 may be concave in the paraxial region.

[0507] The third lens 1630 may have positive refractive power, and the object side of the third lens 1630 may bulge in the paraxial region and the image side of the third lens 1630 may be concave in the paraxial region.

[0508] The fourth lens 1640 may have positive refractive power, and the object side of the fourth lens 1640 may bulge in the paraxial region and the image side of the fourth lens 1640 may be concave in the paraxial region.

[0509] The fifth lens 1650 may have negative refractive power, and the object side of the fifth lens 1650 may be concave in the paraxial region and the image side of the fifth lens 1650 may be convex in the paraxial region.

[0510] The sixth lens 1660 may have positive refractive power, and the object side of the sixth lens 1660 may bulge in the paraxial region and the image side of the sixth lens 1660 may be concave in the paraxial region.

[0511] The seventh lens 1670 may have negative refractive power, and the object side of the seventh lens 1670 may bulge in the paraxial region and the image side of the seventh lens 1670 may be concave in the paraxial region.

[0512] Additionally, two inflection points can be formed on the object-side surface of the seventh lens 1670. For example, the object-side surface of the seventh lens 1670 can bulge in the paraxial region, become concave in the region outside the paraxial region, and bulge towards the edge of the object-side surface of the seventh lens 1670.

[0513] Additionally, a recurved point can be formed on the image-side surface of the seventh lens 1670. For example, the image-side surface of the seventh lens 1670 can be concave in the paraxial region and convex towards the edge of the image-side surface of the seventh lens 1670.

[0514] although Figure 31 The aperture is not shown, but it is set at a distance of 0.919 mm from the object side of the first lens 1610 toward the image side of the optical imaging system. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 16 listed in Table 55, which will be presented later in this application.

[0515] Table 31 below shows the composition Figure 31 The physical properties of the lenses and other components of the optical imaging system are shown in Table 32 below. Figure 31 The aspherical surface coefficient of the lens. Figure 31 Both surfaces of all the lenses are aspherical.

[0516] Table 31

[0517]

[0518] Table 32

[0519]

[0520]

[0521] Seventeenth Example

[0522] Figure 33 is a view illustrating a seventeenth example of an optical imaging system, and Figure 34 aberration curves of the optical imaging system of Figure 33 are shown.

[0523] The seventeenth example of the optical imaging system can include a first lens 1710, a second lens 1720, a third lens 1730, a fourth lens 1740, a fifth lens 1750, a sixth lens 1760, a seventh lens 1770, a filter 1780, an image sensor 1790, and a stop (not shown) disposed between an object side and the first lens 1710.

[0524] The first lens 1710 can have a positive refractive power, and an object side surface of the first lens 1710 can be convex in a paraxial region and an image side surface of the first lens 1710 can be concave in the paraxial region.

[0525] The second lens 1720 can have a negative refractive power, and an object side surface of the second lens 1720 can be convex in a paraxial region and an image side surface of the second lens 1720 can be concave in the paraxial region.

[0526] The third lens 1730 can have a positive refractive power, and an object side surface of the third lens 1730 can be convex in a paraxial region and an image side surface of the third lens 1730 can be concave in the paraxial region.

[0527] The fourth lens 1740 can have a positive refractive power, and an object side surface of the fourth lens 1740 can be convex in a paraxial region and an image side surface of the fourth lens 1740 can be concave in the paraxial region.

[0528] The fifth lens 1750 can have a negative refractive power, and an object side surface of the fifth lens 1750 can be concave in a paraxial region and an image side surface of the fifth lens 1750 can be convex in the paraxial region.

[0529] The sixth lens 1760 can have a negative refractive power, and an object side surface of the sixth lens 1760 can be convex in a paraxial region and an image side surface of the sixth lens 1760 can be concave in the paraxial region.

[0530] The seventh lens 1770 can have a negative refractive power, and an object side surface of the seventh lens 1770 can be convex in a paraxial region and an image side surface of the seventh lens 1770 can be concave in the paraxial region.

[0531] Additionally, a recurved point can be formed on the object-side surface of the seventh lens 1770. For example, the object-side surface of the seventh lens 1770 can bulge in the paraxial region and become concave towards the edge of the object-side surface of the seventh lens 1770.

[0532] Additionally, a recurved point can be formed on the image-side surface of the seventh lens 1770. For example, the image-side surface of the seventh lens 1770 can be concave in the paraxial region and convex towards the edge of the image-side surface of the seventh lens 1770.

[0533] although Figure 33 The aperture is not shown, but it is set at a distance of 0.250 mm from the object side of the first lens 1710 toward the image side of the optical imaging system. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 17 listed in Table 55, which will be presented later in this application.

[0534] Table 33 below shows the composition Figure 33 The physical properties of the lenses and other components of the optical imaging system are shown in Table 34 below. Figure 33 The aspherical surface coefficient of the lens. Figure 33 Both surfaces of all the lenses are aspherical.

[0535] Table 33

[0536]

[0537] Table 34

[0538] K A B C D E F G H S1 0.0432 -0.0088 0.0131 -0.0627 0.1199 -0.1345 0.077 -0.018 -0.0004 S2 -26.097 -0.0562 0.051 -0.0514 0.0595 -0.0683 0.0462 -0.0139 -7E-05 S3 -99 -0.1283 0.1953 -0.2779 0.5135 -0.8812 0.9662 -0.5723 0.1395 S4 -16.567 -0.0971 0.1552 -0.3608 0.985 -2.059 2.5647 -1.6683 0.4378 S5 -1.6774 -0.0377 0.065 -0.4515 1.687 -3.5163 4.2391 -2.6607 0.6752 S6 57.913 -0.0559 0.0533 -0.341 1.3373 -2.8539 3.4811 -2.2114 0.5781 S7 -66.305 -0.1749 -0.0635 0.0963 -0.2061 0.5819 -0.9 0.6874 -0.1979 S8 19.549 -0.1228 -0.0686 0.0207 0.1647 -0.2695 0.1725 -0.0616 0.0161 S9 29.709 -0.0709 0.0826 -0.3062 0.6009 -0.6459 0.3344 -0.0761 0 S10 -31.338 -0.1255 0.1076 -0.1494 0.1908 -0.1423 0.0506 -0.0065 0 S11 -46.453 0.0038 -0.1455 0.1534 -0.126 0.0705 -0.0225 0.0029 0 S12 -31.504 0.0093 -0.0326 0.0149 -0.0033 0.0003 -1E-05 -7E-07 0 S13 -0.5233 -0.2947 0.1709 -0.0627 0.0154 -0.0025 0.0003 -1E-05 3E-07 S14 -0.8257 -0.2584 0.1353 -0.0565 0.0166 -0.0032 0.0004 -3E-05 7E-07

[0539] Eighteenth Example

[0540] Figure 35 This is a view showing the eighteenth example of an optical imaging system, and Figure 36 It shows Figure 35 Aberration curves of optical imaging systems.

[0541] An eighteenth example of an optical imaging system may include a first lens 1810, a second lens 1820, a third lens 1830, a fourth lens 1840, a fifth lens 1850, a sixth lens 1860, a seventh lens 1870, a filter 1880, an image sensor 1890, and an aperture (not shown) disposed between the first lens 1810 and the second lens 1820.

[0542] The first lens 1810 may have positive refractive power, and the object side of the first lens 1810 may bulge in the paraxial region and the image side of the first lens 1810 may be concave in the paraxial region.

[0543] The second lens 1820 can have a negative refractive power, and the object side surface of the second lens 1820 can be convex in the paraxial region and the image side surface of the second lens 1820 can be concave in the paraxial region.

[0544] The third lens 1830 can have a positive refractive power, and the object side surface of the third lens 1830 can be convex in the paraxial region and the image side surface of the third lens 1830 can be concave in the paraxial region.

[0545] The fourth lens 1840 can have a positive refractive power, and the object side surface of the fourth lens 1840 can be convex in the paraxial region and the image side surface of the fourth lens 1840 can be concave in the paraxial region.

[0546] The fifth lens 1850 can have a positive refractive power, and the object side surface of the fifth lens 1850 can be concave in the paraxial region and the image side surface of the fifth lens 1850 can be convex in the paraxial region.

[0547] The sixth lens 1860 can have a positive refractive power, and the object side surface and the image side surface of the sixth lens 1860 can be convex in the paraxial region.

[0548] The seventh lens 1870 can have a negative refractive power, and the object side surface and the image side surface of the seventh lens 1870 can be concave in the paraxial region.

[0549] In addition, one inflection point can be formed on the object side surface of the seventh lens 1870. For example, the object side surface of the seventh lens 1870 can be concave in the paraxial region, and becomes convex toward the edge of the object side surface of the seventh lens 1870.

[0550] In addition, one inflection point can be formed on the image side surface of the seventh lens 1870. For example, the image side surface of the seventh lens 1870 can be concave in the paraxial region, and becomes convex toward the edge of the image side surface of the seventh lens 1870.

[0551] Although Figure 35 not shown in Table 2, the stop is disposed at a distance of 0.768 mm from the object side surface of the first lens 1810 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 18 listed in Table 55 presented later in this application.

[0552] Table 35 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 35 Table 36 below shows the aspherical surface coefficients of the lenses of Figure 35 Table 37 below shows the aspherical surface coefficients of the lenses of Figure 35 All the lenses of Table 37 have two aspherical surfaces.

[0553] Table 35

[0554] Table 35

[0555]

[0556] Table 36

[0557] K A B C D E F G H J S1 -0.8127 0.0142 0.0092 -0.0157 0.0206 -0.0137 0.0037 0.0003 -0.0003 0 S2 5.6538 -0.0472 0.0448 -0.0321 0.0158 -0.0059 0.001 0.0004 -0.0002 0 S3 -10.668 -0.0824 0.0792 -0.0266 -0.0158 0.0274 -0.0153 0.0039 -0.0004 0 S4 -0.1737 -0.0508 0.0303 0.1129 -0.3063 0.4131 -0.3101 0.1243 -0.0205 0 S5 0 -0.0377 0.0156 -0.0597 0.0773 -0.0624 0.0268 -0.0045 3E-05 0 S6 0 -0.0706 0.0482 -0.0575 -0.0009 0.0419 -0.0392 0.0166 -0.0028 0 S7 46.114 -0.1374 0.0451 0.0051 -0.0298 0.0052 0.0076 -0.0027 0.0001 0 S8 99 -0.1096 -0.0451 0.1394 -0.1519 0.0948 -0.0333 0.006 -0.0004 0 S9 -99 -0.0865 0.1152 -0.1605 0.1182 -0.0466 0.0099 -0.0011 5E-05 0 S10 -0.2245 0.0593 -0.0542 0.0004 0.0119 -0.0044 0.0007 -5E-05 1E-06 0 S11 -99 0.1031 -0.1094 0.0579 -0.0216 0.005 -0.0007 4E-05 -1E-06 0 S12 -4.7232 0.1521 -0.1221 0.0592 -0.0202 0.0046 -0.0007 5E-05 -2E-06 0 S13 -1.1986 -0.0323 -0.0724 0.0507 -0.0141 0.0021 -0.0002 8E-06 -2E-07 0 S14 -1.2644 -0.1675 0.0662 -0.0204 0.0047 -0.0007 8E-05 -5E-06 2E-07 -2E-09

[0558] Nineteenth Example

[0559] Figure 37 is a view illustrating a nineteenth example of an optical imaging system, and Figure 38 illustrates Figure 37 aberration curves of the optical imaging system of FIG. 19.

[0560] A nineteenth example of an optical imaging system can include a first lens 1910, a second lens 1920, a third lens 1930, a fourth lens 1940, a fifth lens 1950, a sixth lens 1960, a seventh lens 1970, a filter 1980, an image sensor 1990, and a stop (not shown) disposed between the first lens 1910 and the second lens 1920.

[0561] The first lens 1910 can have a positive refractive power, and an object side surface of the first lens 1910 can be convex in a paraxial region and an image side surface of the first lens 1910 can be concave in the paraxial region.

[0562] The second lens 1920 can have a negative refractive power, and an object side surface of the second lens 1920 can be convex in a paraxial region and an image side surface of the second lens 1920 can be concave in the paraxial region.

[0563] The third lens 1930 can have a positive refractive power, and an object side surface of the third lens 1930 can be convex in a paraxial region and an image side surface of the third lens 1930 can be concave in the paraxial region.

[0564] The fourth lens 1940 can have a positive refractive power, and an object side surface and an image side surface of the fourth lens 1940 can be convex in a paraxial region.

[0565] The fifth lens 1950 can have a negative refractive power, and an object side surface of the fifth lens 1950 can be concave in a paraxial region and an image side surface of the fifth lens 1950 can be convex in the paraxial region.

[0566] The sixth lens 1960 can have a positive refractive power, and an object side surface and an image side surface of the sixth lens 1960 can be convex in a paraxial region.

[0567] The seventh lens 1970 can have a negative refractive power, and an object side surface and an image side surface of the seventh lens 1970 can be concave in a paraxial region.

[0568] In addition, a point of inflection can be formed on the object side surface of the seventh lens 1970. For example, the object side surface of the seventh lens 1970 can be concave in the paraxial region, and become convex toward the edge of the object side surface of the seventh lens 1970.

[0569] In addition, a point of inflection can be formed on the image side surface of the seventh lens 1970. For example, the image side surface of the seventh lens 1970 can be concave in the paraxial region, and become convex toward the edge of the image side surface of the seventh lens 1970.

[0570] Although Figure 37 not shown in FIG. 19, the stop is disposed at a distance of 0.624 mm from the object side surface of the first lens 1910 toward the image side of the optical imaging system. The distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 19 listed in Table 55 presented later in this application.

[0571] Table 37 below shows the physical properties of the lenses and other elements that make up the optical imaging system of Figure 37 Example 19, and Table 38 below shows the aspherical surface coefficients of the lenses of Figure 37 Example 19. Figure 37 Both surfaces of all the lenses of Example 19 are aspherical.

[0572] Table 37

[0573]

[0574]

[0575] Table 38

[0576] K A B C D E F G H J S1 -0.5383 0.0108 0.0209 -0.0477 0.0729 -0.06 0.0243 -0.0027 -0.0007 0 S2 5.8135 -0.0459 0.0189 0.0248 -0.0559 0.0486 -0.026 0.0094 -0.0019 0 S3 -10.011 -0.085 0.066 0.02 -0.0808 0.0756 -0.0332 0.0069 -0.0006 0 S4 -0.1875 -0.0544 0.0068 0.26 -0.6655 0.9329 -0.7519 0.3313 -0.061 0 S5 0 -0.0569 0.0063 -0.0275 -0.0046 0.0401 -0.0485 0.0264 -0.0053 0 S6 0 -0.0775 -0.0976 0.271 -0.5329 0.5567 -0.3323 0.1128 -0.0176 0 S7 47.015 -0.0863 -0.1024 0.2298 -0.2721 0.1091 0.0392 -0.0378 0.0065 0 S8 -99 -0.0603 -0.0348 0.057 -0.0468 0.0241 -0.007 0.001 -6E-05 0 S9 -99 -0.2672 0.6153 -0.9745 0.9138 -0.5236 0.1786 -0.0332 0.0026 0 S10 -0.0701 0.0268 -0.0377 -0.0253 0.035 -0.0133 0.0024 -0.0002 7E-06 0 S11 -97.721 0.1556 -0.2109 0.1424 -0.0678 0.02 -0.0033 0.0003 -1E-05 0 S12 -1.5998 0.2298 -0.1811 0.0905 -0.0342 0.0088 -0.0014 0.0001 -4E-06 0 S13 4.8341 -0.1142 -0.0024 0.0306 -0.013 0.0027 -0.0003 2E-05 -5E-07 0 S14 -1.0993 -0.2618 0.1449 -0.0599 0.0171 -0.0032 0.0004 -3E-05 1E-06 -2E-08

[0577] Twentieth Example

[0578] Figure 39 is a view showing a twentieth example of an optical imaging system, and Figure 40 shows the aberration curves of the optical imaging system of Figure 39 Example 19.

[0579] The twentieth example of the optical imaging system can include a first lens 2010, a second lens 2020, a third lens 2030, a fourth lens 2040, a fifth lens 2050, a sixth lens 2060, a seventh lens 2070, a filter 2080, an image sensor 2090, and a stop (not shown) disposed between the first lens 2010 and the second lens 2020.

[0580] The first lens 2010 can have a positive refractive power, and the object side surface of the first lens 2010 can be convex in the paraxial region and the image side surface of the first lens 2010 can be concave in the paraxial region.

[0581] The second lens 2020 can have a negative refractive power, and the object side surface of the second lens 2020 can be convex in the paraxial region and the image side surface of the second lens 2020 can be concave in the paraxial region.

[0582] The third lens 2030 can have a negative refractive power, and the object side surface of the third lens 2030 can be convex in the paraxial region and the image side surface of the third lens 2030 can be concave in the paraxial region.

[0583] The fourth lens 2040 can have a positive refractive power, and the object side surface of the fourth lens 2040 can be convex in the paraxial region and the image side surface of the fourth lens 2040 can be concave in the paraxial region.

[0584] The fifth lens 2050 can have a positive refractive power, and the object side surface of the fifth lens 2050 can be concave in the paraxial region and the image side surface of the fifth lens 2050 can be convex in the paraxial region.

[0585] The sixth lens 2060 can have a positive refractive power, and the object side surface and the image side surface of the sixth lens 2060 can be convex in the paraxial region.

[0586] The seventh lens 2070 can have a negative refractive power, and the object side surface and the image side surface of the seventh lens 2070 can be concave in the paraxial region.

[0587] In addition, one inflection point can be formed on the image side surface of the seventh lens 2070. For example, the image side surface of the seventh lens 2070 can be concave in the paraxial region, and becomes convex toward the edge of the image side surface of the seventh lens 2070.

[0588] Although Figure 39 not shown in Table 55, an aperture stop is disposed at a distance of 0.641 mm from the object side surface of the first lens 2010 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 20 listed in Table 55 presented later in this application.

[0589] Table 39 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 39 Table 40 below shows the aspherical surface coefficients of the lenses of Figure 39 Table 41 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 39 Table 42 below shows the aspherical surface coefficients of the lenses of

[0590] Table 39

[0591]

[0592]

[0593] Table 40

[0594] K A B C D E F G H J S1 -0.812 0.0136 0.0311 -0.0769 0.1226 -0.1099 0.0531 -0.0116 0.0005 0 S2 -6.6917 -0.0631 0.0174 0.0714 -0.1648 0.1763 -0.1086 0.0376 -0.0059 0 S3 -14.579 -0.0707 0.0068 0.1319 -0.2129 0.173 -0.0715 0.0127 -0.0005 0 S4 -0.188 -0.0614 -0.0138 0.3338 -0.7392 0.9251 -0.6781 0.276 -0.0477 0 S5 0 -0.0572 0.0435 -0.1733 0.2724 -0.2421 0.0931 -0.0042 -0.0038 0 S6 0 -0.1356 -0.0309 0.2183 -0.5547 0.6931 -0.486 0.1856 -0.0304 0 S7 30.023 -0.2107 0.0007 0.1568 -0.2854 0.2586 -0.1154 0.0236 -0.0019 0 S8 -99 -0.1858 -0.0192 0.2616 -0.4111 0.3392 -0.1538 0.0357 -0.0033 0 S9 -98.995 -0.2935 0.5043 -0.5157 0.2657 -0.0658 0.0056 0.0005 -8E-05 0 S10 -0.0701 -0.0775 0.2223 -0.2703 0.1529 -0.0452 0.0073 -0.0006 2E-05 0 S11 -97.878 0.1479 -0.1956 0.1288 -0.0598 0.0172 -0.0028 0.0002 -8E-06 0 S12 1.4166 0.1234 -0.1416 0.087 -0.0341 0.0088 -0.0014 0.0001 -4E-06 0 S13 9.5503 -0.2864 0.1096 0.0149 -0.0214 0.0064 -0.0009 6E-05 -2E-06 0 S14 -1.2786 -0.3076 0.1777 -0.0626 0.0143 -0.0022 0.0002 -1E-05 5E-07 -7E-09

[0595] Twenty First Example

[0596] Figure 41 is a view showing a twenty-first example of an optical imaging system, and Figure 42 aberration curves of the optical imaging system of Figure 41 are shown.

[0597] A twenty-first example of an optical imaging system can include a first lens 2110, a second lens 2120, a third lens 2130, a fourth lens 2140, a fifth lens 2150, a sixth lens 2160, a seventh lens 2170, a filter 2180, an image sensor 2190, and a stop (not shown) disposed between the second lens 2120 and the third lens 2130.

[0598] The first lens 2110 can have a positive refractive power, and an object side surface of the first lens 2110 can be convex in a paraxial region and an image side surface of the first lens 2110 can be concave in the paraxial region.

[0599] The second lens 2120 can have a negative refractive power, and an object side surface of the second lens 2120 can be convex in a paraxial region and an image side surface of the second lens 2120 can be concave in the paraxial region.

[0600] The third lens 2130 can have a negative refractive power, and an object side surface of the third lens 2130 can be convex in a paraxial region and an image side surface of the third lens 2130 can be concave in the paraxial region.

[0601] The fourth lens 2140 can have a positive refractive power, and an object side surface and an image side surface of the fourth lens 2140 can be convex in a paraxial region.

[0602] The fifth lens 2150 can have a negative refractive power, and an object side surface of the fifth lens 2150 can be concave in a paraxial region and an image side surface of the fifth lens 2150 can be convex in the paraxial region.

[0603] The sixth lens 2160 can have a negative refractive power, and an object side surface of the sixth lens 2160 can be convex in a paraxial region and an image side surface of the sixth lens 2160 can be concave in the paraxial region.

[0604] The seventh lens 2170 can have a negative refractive power, and an object side surface of the seventh lens 2170 can be convex in a paraxial region and an image side surface of the seventh lens 2170 can be concave in the paraxial region.

[0605] Additionally, a recurved point may be formed on the object-side surface of the seventh lens 2170. For example, the object-side surface of the seventh lens 2170 may bulge in the paraxial region and become concave towards the edge of the object-side surface of the seventh lens 2170.

[0606] Additionally, a recurved point can be formed on the image-side surface of the seventh lens 2170. For example, the image-side surface of the seventh lens 2170 can be concave in the paraxial region and convex towards the edge of the image-side surface of the seventh lens 2170.

[0607] although Figure 41 The aperture is not shown, but it is set at a distance of 1.070 mm from the object side of the first lens 2110 toward the image side of the optical imaging system. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 21 listed in Table 55, which will be presented later in this application.

[0608] Table 41 below shows the composition Figure 41 The physical properties of the lenses and other components of the optical imaging system are shown in Table 42 below. Figure 41 The aspherical surface coefficient of the lens. Figure 41 Both surfaces of all the lenses are aspherical.

[0609] Table 41

[0610]

[0611]

[0612] Table 42

[0613] K A B C D E F G H J S1 -0.1212 0.0104 0.0128 -0.0281 0.0435 -0.0381 0.0173 -0.0033 0 0 S2 29.637 -0.0905 0.3333 -0.7525 0.9665 -0.741 0.3153 -0.0585 0 0 S3 -2.48 -0.117 0.4074 -0.8715 1.1061 -0.8249 0.3423 -0.062 0 0 S4 -0.6581 -0.0925 0.1463 -0.1165 -0.011 0.2266 -0.2114 0.0722 0 0 S5 3.0804 -0.1259 0.1776 -0.2375 0.4049 -0.4425 0.2969 -0.0837 0 0 S6 10.659 -0.1644 0.1692 -0.1502 0.1444 -0.0762 0.0151 -0.0003 0 0 S7 21.918 -0.0617 0.0459 -0.0379 0.0564 -0.0364 0.0097 -0.0009 0 0 S8 25.736 -0.0713 0.0217 -0.0106 0.0072 -0.0023 0.0003 -2E-05 0 0 S9 1.6857 -0.1436 0.2565 -0.4332 0.4184 -0.2461 0.0826 -0.0124 0 0 S10 75.072 -0.1186 0.1217 -0.1545 0.1026 -0.0332 0.005 -0.0003 0 0 S11 -52.836 0.0701 -0.2199 0.2058 -0.1343 0.0526 -0.0106 0.0009 0 0 S12 0 -0.0521 -0.0332 0.0285 -0.0129 0.0028 3E-06 -0.0001 2E-05 -5E-07 S13 -0.9427 -0.3217 0.0977 -0.0029 -0.0058 0.0017 -0.0002 2E-05 -4E-07 0 S14 -1.0048 -0.2798 0.1282 -0.0461 0.0122 -0.0022 0.0002 -1E-05 4E-07 0

[0614] Twenty Second Example

[0615] Figure 43 This is a view showing the twenty-second example of an optical imaging system, and Figure 44 It shows Figure 43 Aberration curves of optical imaging systems.

[0616] A twenty-second example of an optical imaging system may include a first lens 2210, a second lens 2220, a third lens 2230, a fourth lens 2240, a fifth lens 2250, a sixth lens 2260, a seventh lens 2270, a filter 2280, an image sensor 2290, and an aperture (not shown) disposed between the second lens 2220 and the third lens 2230.

[0617] The first lens 2210 can have a positive refractive power, and the object side surface of the first lens 2210 can be convex in the paraxial region and the image side surface of the first lens 2210 can be concave in the paraxial region.

[0618] The second lens 2220 can have a negative refractive power, and the object side surface of the second lens 2220 can be convex in the paraxial region and the image side surface of the second lens 2220 can be concave in the paraxial region.

[0619] The third lens 2230 can have a negative refractive power, and the object side surface of the third lens 2230 can be convex in the paraxial region and the image side surface of the third lens 2230 can be concave in the paraxial region.

[0620] The fourth lens 2240 can have a positive refractive power, and the object side surface and the image side surface of the fourth lens 2240 can be convex in the paraxial region.

[0621] The fifth lens 2250 can have a negative refractive power, and the object side surface of the fifth lens 2250 can be concave in the paraxial region and the image side surface of the fifth lens 2250 can be convex in the paraxial region.

[0622] The sixth lens 2260 can have a negative refractive power, and the object side surface of the sixth lens 2260 can be convex in the paraxial region and the image side surface of the sixth lens 2260 can be concave in the paraxial region.

[0623] The seventh lens 2270 can have a negative refractive power, and the object side surface of the seventh lens 2270 can be convex in the paraxial region and the image side surface of the seventh lens 2270 can be concave in the paraxial region.

[0624] In addition, one inflection point can be formed on the object side surface of the seventh lens 2270. For example, the object side surface of the seventh lens 2270 can be convex in the paraxial region, and becomes concave toward the edge of the object side surface of the seventh lens 2270.

[0625] In addition, one inflection point can be formed on the image side surface of the seventh lens 2270. For example, the image side surface of the seventh lens 2270 can be concave in the paraxial region, and becomes convex toward the edge of the image side surface of the seventh lens 2270.

[0626] Although Figure 43 not shown in Table 52, a stop is disposed at a distance of 1.050 mm from the object side surface of the first lens 2210 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 22 listed in Table 55 presented later in this application.

[0627] Table 43 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 43 Table 44 below shows the physical properties of the lenses and other elements constituting the optical imaging system ofFigure 43 aspherical surface coefficients of the lens. Figure 43 Both surfaces of all lenses are aspherical.

[0628] Table 43

[0629]

[0630] Table 44

[0631]

[0632]

[0633] Twenty Third Example

[0634] Figure 45 is a view showing a twenty-third example of an optical imaging system, and Figure 46 shows Figure 45 aberration curves of the optical imaging system.

[0635] A twenty-third example of an optical imaging system can include a first lens 2310, a second lens 2320, a third lens 2330, a fourth lens 2340, a fifth lens 2350, a sixth lens 2360, a seventh lens 2370, a filter 2380, an image sensor 2390, and a stop (not shown) disposed between the second lens 2320 and the third lens 2330.

[0636] The first lens 2310 can have a positive refractive power, and an object side surface of the first lens 2310 can be convex in a paraxial region and an image side surface of the first lens 2310 can be concave in the paraxial region.

[0637] The second lens 2320 can have a positive refractive power, and an object side surface of the second lens 2320 can be convex in a paraxial region and an image side surface of the second lens 2320 can be concave in the paraxial region.

[0638] The third lens 2330 can have a negative refractive power, and an object side surface of the third lens 2330 can be convex in a paraxial region and an image side surface of the third lens 2330 can be concave in the paraxial region.

[0639] The fourth lens 2340 can have a positive refractive power, and an object side surface of the fourth lens 2340 can be convex in a paraxial region and an image side surface of the fourth lens 2340 can be concave in the paraxial region.

[0640] The fifth lens 2350 can have a negative refractive power, and an object side surface of the fifth lens 2350 can be convex in a paraxial region and an image side surface of the fifth lens 2350 can be concave in the paraxial region.

[0641] The sixth lens 2360 can have a positive refractive power, and the object side surface of the sixth lens 2360 can be convex in the paraxial region and the image side surface of the sixth lens 2360 can be concave in the paraxial region.

[0642] The seventh lens 2370 can have a positive refractive power, and the object side surface of the seventh lens 2370 can be convex in the paraxial region and the image side surface of the seventh lens 2370 can be concave in the paraxial region.

[0643] In addition, two inflection points can be formed on the object side surface of the seventh lens 2370. For example, the object side surface of the seventh lens 2370 can be convex in the paraxial region, become concave in a region outside the paraxial region, and become convex toward the edge of the object side surface of the seventh lens 2370.

[0644] In addition, one inflection point can be formed on the image side surface of the seventh lens 2370. For example, the image side surface of the seventh lens 2370 can be concave in the paraxial region and become convex toward the edge of the image side surface of the seventh lens 2370.

[0645] Although Figure 45 not shown in FIG. 23, a stop is disposed at a distance of 1.082 mm from the object side surface of the first lens 2310 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 23 listed in Table 55 presented later in this application.

[0646] Table 45 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Example 24, and Table 46 below shows the aspherical surface coefficients of the lenses of Example 24. Figure 45 Figure 45 All the lenses of Example 24 have both surfaces aspherical. Figure 45

[0647] Table 45

[0648]

[0649] Table 46

[0650]

[0651]

[0652] Twenty Fourth Example

[0653] Figure 47 is a view showing a twenty-fourth example of an optical imaging system, and Figure 48 shows the aberration curves of the optical imaging system of Example 24. Figure 47

[0654] ​​​A twenty-fourth example of an optical imaging system can include a first lens 2410, a second lens 2420, a third lens 2430, a fourth lens 2440, a fifth lens 2450, a sixth lens 2460, a seventh lens 2470, a filter 2480, an image sensor 2490, and a stop (not shown) disposed between the second lens 2420 and the third lens 2430.

[0655] The first lens 2410 can have a positive refractive power, and an object side surface of the first lens 2410 can be convex in a paraxial region and an image side surface of the first lens 2410 can be concave in the paraxial region.

[0656] The second lens 2420 can have a negative refractive power, and an object side surface of the second lens 2420 can be convex in a paraxial region and an image side surface of the second lens 2420 can be concave in the paraxial region.

[0657] The third lens 2430 can have a negative refractive power, and an object side surface of the third lens 2430 can be convex in a paraxial region and an image side surface of the third lens 2430 can be concave in the paraxial region.

[0658] The fourth lens 2440 can have a positive refractive power, and an object side surface of the fourth lens 2440 can be convex in a paraxial region and an image side surface of the fourth lens 2440 can be concave in the paraxial region.

[0659] The fifth lens 2450 can have a negative refractive power, and an object side surface of the fifth lens 2450 can be convex in a paraxial region and an image side surface of the fifth lens 2450 can be concave in the paraxial region.

[0660] The sixth lens 2460 can have a negative refractive power, and an object side surface and an image side surface of the sixth lens 2460 can be concave in a paraxial region.

[0661] The seventh lens 2470 can have a positive refractive power, and an object side surface of the seventh lens 2470 can be convex in a paraxial region and an image side surface of the seventh lens 2470 can be concave in the paraxial region.

[0662] In addition, one inflection point can be formed on the object side surface of the seventh lens 2470. For example, the object side surface of the seventh lens 2470 can be convex in a paraxial region, and become concave toward an edge of the object side surface of the seventh lens 2470.

[0663] In addition, one inflection point can be formed on the image side surface of the seventh lens 2470. For example, the image side surface of the seventh lens 2470 can be concave in a paraxial region, and become convex toward an edge of the image side surface of the seventh lens 2470.

[0664] Although Figure 47The stop is not shown in FIG. 21, but is disposed at a distance of 0.963 mm from the object side surface of the first lens 2110 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL for Example 1 presented in Table 5 below.

[0665] Table 47 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Example 24, and Table 48 below shows the aspherical surface coefficients of the lenses of Example 24. Figure 47 Figure 47 All of the lenses of Example 24 have two aspherical surfaces. Figure 47

[0666] Table 47

[0667]

[0668] Table 48

[0669]

[0670]

[0671] Twenty Fifth Example

[0672] Figure 49 FIG. 22 is a view showing a twenty-fifth example of an optical imaging system, and Figure 50 FIG. 23 shows the aberration curves of the optical imaging system of Example 24. Figure 49

[0673] The twenty-fifth example of the optical imaging system can include a first lens 2510, a second lens 2520, a third lens 2530, a fourth lens 2540, a fifth lens 2550, a sixth lens 2560, a seventh lens 2570, a filter 2580, an image sensor 2590, and a stop (not shown) disposed between the second lens 2520 and the third lens 2530.

[0674] The first lens 2510 can have a positive refractive power, and the object side surface of the first lens 2510 can be convex in the paraxial region and the image side surface of the first lens 2510 can be concave in the paraxial region.

[0675] The second lens 2520 can have a negative refractive power, and the object side surface of the second lens 2520 can be convex in the paraxial region and the image side surface of the second lens 2520 can be concave in the paraxial region.

[0676] The third lens 2530 can have a positive refractive power, and the object side surface of the third lens 2530 can be concave in the paraxial region and the image side surface of the third lens 2530 can be convex in the paraxial region.

[0677] ​​​The fourth lens 2540 can have a negative refractive power, and the object side surface of the fourth lens 2540 can be convex in the paraxial region and the image side surface of the fourth lens 2540 can be concave in the paraxial region.

[0678] The fifth lens 2550 can have a positive refractive power, and the object side surface of the fifth lens 2550 can be concave in the paraxial region and the image side surface of the fifth lens 2550 can be convex in the paraxial region.

[0679] The sixth lens 2560 can have a positive refractive power, and the object side surface of the sixth lens 2560 can be concave in the paraxial region and the image side surface of the sixth lens 2560 can be convex in the paraxial region.

[0680] The seventh lens 2570 can have a negative refractive power, and the object side surface and the image side surface of the seventh lens 2570 can be concave in the paraxial region.

[0681] In addition, one inflection point can be formed on the image side surface of the seventh lens 2570. For example, the image side surface of the seventh lens 2570 can be concave in the paraxial region, and becomes convex toward the edge of the image side surface of the seventh lens 2570.

[0682] Although Figure 49 not shown in Table 51, the stop is disposed at a distance of 0.872 mm from the object side surface of the first lens 2510 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 25 listed in Table 55 presented later in this application.

[0683] Table 49 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 49 Table 50 below shows the aspherical surface coefficients of the lenses of Figure 49 .

[0684] Table 49

[0685]

[0686] Table 50

[0687]

[0688]

[0689] Twenty Sixth Example

[0690] Figure 51 is a view showing a twenty-sixth example of an optical imaging system, and Figure 52 shows the aberration curves of the optical imaging system of Figure 51 .

[0691] A twenty-sixth example of an optical imaging system can include a first lens 2610, a second lens 2620, a third lens 2630, a fourth lens 2640, a fifth lens 2650, a sixth lens 2660, a seventh lens 2670, a filter 2680, an image sensor 2690, and a stop (not shown) disposed between the second lens 2620 and the third lens 2630.

[0692] The first lens 2610 can have a positive refractive power, and an object side surface of the first lens 2610 can be convex in a paraxial region and an image side surface of the first lens 2610 can be concave in the paraxial region.

[0693] The second lens 2620 can have a negative refractive power, and an object side surface of the second lens 2620 can be convex in a paraxial region and an image side surface of the second lens 2620 can be concave in the paraxial region.

[0694] The third lens 2630 can have a positive refractive power, and an object side surface of the third lens 2630 can be concave in a paraxial region and an image side surface of the third lens 2630 can be convex in the paraxial region.

[0695] The fourth lens 2640 can have a positive refractive power, and an object side surface of the fourth lens 2640 can be convex in a paraxial region and an image side surface of the fourth lens 2640 can be concave in the paraxial region.

[0696] The fifth lens 2650 can have a negative refractive power, and an object side surface of the fifth lens 2650 can be convex in a paraxial region and an image side surface of the fifth lens 2650 can be concave in the paraxial region.

[0697] The sixth lens 2660 can have a positive refractive power, and an object side surface of the sixth lens 2660 can be convex in a paraxial region and an image side surface of the sixth lens 2660 can be concave in the paraxial region.

[0698] The seventh lens 2670 can have a positive refractive power, and an object side surface of the seventh lens 2670 can be convex in a paraxial region and an image side surface of the seventh lens 2670 can be concave in the paraxial region.

[0699] In addition, two inflection points can be formed on the object side surface of the seventh lens 2670. For example, the object side surface of the seventh lens 2670 can be convex in a paraxial region, become concave in a region outside the paraxial region, and become convex toward an edge of the object side surface of the seventh lens 2670.

[0700] In addition, one inflection point can be formed on the image side surface of the seventh lens 2670. For example, the image side surface of the seventh lens 2670 can be concave in a paraxial region, and become convex toward an edge of the image side surface of the seventh lens 2670.

[0701] Although Figure 51The aperture is not shown, but it is set at a distance of 0.866 mm from the object side of the first lens 2610 toward the image side of the optical imaging system. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 26 listed in Table 55, which will be presented later in this application.

[0702] Table 51 below shows the composition Figure 51 The physical properties of the lenses and other components of the optical imaging system are shown in Table 52 below. Figure 51 The aspherical surface coefficient of the lens.

[0703] Table 51

[0704]

[0705] Table 52

[0706] K A B C D E F G H J S1 -0.1525 0.00346 0.00541 -0.0238 0.05874 -0.0925 0.08078 -0.0376 0.00687 0 S2 -36.188 -0.0554 0.19103 -0.4954 0.90918 -1.1194 0.84898 -0.3546 0.06168 0 S3 -0.1164 -0.0883 0.22642 -0.5273 0.9947 -1.274 1.01042 -0.4343 0.07596 0 S4 0.3326 -0.0462 0.09702 -0.2316 0.5455 -0.848 0.78539 -0.3759 0.07082 0 S5 51.7577 -0.0119 -0.0911 0.36173 -0.9067 1.38454 -1.3014 0.68351 -0.1493 0 S6 42.1637 0.0924 -0.5269 1.35579 -2.2584 2.50931 -1.8107 0.76109 -0.139 0 S7 -4.7579 0.13357 -0.5938 1.26101 -1.8115 1.7924 -1.1666 0.44267 -0.0728 0 S8 -3.4393 0.04714 -0.1842 0.28859 -0.3575 0.32734 -0.1971 0.06695 -0.0093 0 S9 -8.5449 -0.0502 -0.0588 0.15989 -0.2027 0.13981 -0.0542 0.01046 -0.0007 0 S10 -18.064 -0.044 -0.0734 0.14254 -0.1303 0.06906 -0.0217 0.00378 -0.0003 0 S11 -4.6497 0.06328 -0.1193 0.08822 -0.0426 0.01348 -0.0028 0.00037 -2E-05 0 S12 -50 0.03403 -0.0497 0.02457 -0.0072 0.00126 -0.0001 6.9E-06 -2E-07 0 S13 -2.4291 -0.1201 0.01667 0.00224 -0.0009 0.00011 -6E-06 1.3E-07 8.8E-10 0 S14 -1.0032 -0.1111 0.02485 -0.0032 -0.0001 0.00013 -2E-05 1.9E-06 -8E-08 1.4E-09

[0707] Twenty Seventh Example

[0708] Figure 53 This is a view showing the twenty-seventh example of an optical imaging system, and Figure 54 It shows Figure 53 Aberration curves of optical imaging systems.

[0709] The twenty-seventh example of an optical imaging system may include a first lens 2710, a second lens 2720, a third lens 2730, a fourth lens 2740, a fifth lens 2750, a sixth lens 2760, a seventh lens 2770, a filter 2780, an image sensor 2790, and an aperture (not shown) disposed between the second lens 2720 and the third lens 2730.

[0710] The first lens 2710 may have positive refractive power, and the object side of the first lens 2710 may bulge in the paraxial region and the image side of the first lens 2710 may be concave in the paraxial region.

[0711] The second lens 2720 may have negative refractive power, and the object side of the second lens 2720 may bulge in the paraxial region and the image side of the second lens 2720 may be concave in the paraxial region.

[0712] The third lens 2730 may have positive refractive power, and the object side of the third lens 2730 may be concave in the paraxial region and the image side of the third lens 2730 may be convex in the paraxial region.

[0713] The fourth lens 2740 may have positive refractive power, and the object side of the fourth lens 2740 may bulge in the paraxial region and the image side of the fourth lens 2740 may be concave in the paraxial region.

[0714] The fifth lens 2750 can have a negative refractive power, and the object side surface of the fifth lens 2750 can be convex in the paraxial region and the image side surface of the fifth lens 2750 can be concave in the paraxial region.

[0715] The sixth lens 2760 can have a positive refractive power, and the object side surface of the sixth lens 2760 can be convex in the paraxial region and the image side surface of the sixth lens 2760 can be concave in the paraxial region.

[0716] The seventh lens 2770 can have a positive refractive power, and the object side surface of the seventh lens 2770 can be convex in the paraxial region and the image side surface of the seventh lens 2770 can be concave in the paraxial region.

[0717] In addition, two inflection points can be formed on the object side surface of the seventh lens 2770. For example, the object side surface of the seventh lens 2770 can be convex in the paraxial region, become concave in a region outside the paraxial region, and become convex toward the edge of the object side surface of the seventh lens 2770.

[0718] In addition, one inflection point can be formed on the image side surface of the seventh lens 2770. For example, the image side surface of the seventh lens 2770 can be concave in the paraxial region, and become convex toward the edge of the image side surface of the seventh lens 2770.

[0719] Although Figure 53 not shown in Table 52, a stop is disposed at a distance of 0.904 mm from the object side surface of the first lens 2710 toward the image side of the optical imaging system. This distance is equal to TTL-SL, and can be calculated from the values of TTL and SL of Example 27 listed in Table 55 presented later in this application.

[0720] Table 53 below shows the physical properties of the lenses and other elements constituting the optical imaging system of Figure 53 Table 52, and Table 54 below shows the aspherical surface coefficients of the lenses of Figure 53 Table 52.

[0721] Table 53

[0722]

[0723]

[0724] Table 54

[0725] K A B C D E F G H J S1 -0.1061 -0.0082 0.0469 -0.0925 0.08107 -0.0129 -0.032 0.02237 -0.0047 0 S2 -36.188 -0.0502 0.16245 -0.4029 0.69307 -0.7643 0.50209 -0.1789 0.02641 0 S3 0.0036 -0.0795 0.20571 -0.548 1.07416 -1.291 0.90975 -0.3412 0.05201 0 S4 0.40382 -0.0325 0.08844 -0.3009 0.70037 -0.9194 0.67381 -0.2424 0.03077 0 S5 51.7577 0.00548 -0.1746 0.50176 -0.9395 1.14417 -0.9144 0.4407 -0.0937 0 S6 42.1637 0.09529 -0.4992 1.03966 -1.2284 0.81694 -0.2802 0.03842 4E-06 0 S7 -4.7579 0.1185 -0.4938 0.85535 -0.8643 0.51674 -0.185 0.04168 -0.0054 0 S8 -3.4393 0.04916 -0.194 0.31472 -0.3773 0.32494 -0.1878 0.06297 -0.0088 0 S9 -8.5449 -0.0638 0.02895 -0.0884 0.16492 -0.171 0.09832 -0.0306 0.00409 0 S10 -18.064 -0.0543 -0.0172 0.03209 -0.0179 0.00397 4.6E-06 -0.0001 7.7E-06 0 S11 -4.6497 0.05354 -0.0909 0.06134 -0.0311 0.01102 -0.0026 0.00036 -2E-05 0 S12 -50 0.01031 -0.0176 0.00573 -0.0015 0.0003 -4E-05 2.4E-06 -6E-08 0 S13 -2.606 -0.1177 0.01922 -0.0004 -1E-04 -1E-05 4.5E-06 -4E-07 9.4E-09 0 S14 -1.0102 -0.0979 0.01866 -0.0024 0.00013 2.1E-05 -6E-06 5.9E-07 -3E-08 5.6E-10

[0726] The following Table 55 shows the total focal length f of the optical imaging system, the total track length TTL of the optical imaging system (distance from the object side surface of the first lens to the image plane), the distance SL from the stop to the image plane, the F No. of the optical imaging system (total focal length f of the optical imaging system divided by the entrance pupil diameter of the optical imaging system, where f and the entrance pupil diameter are expressed in mm), the image height (Img HT) on the image plane (half of the diagonal length of the image plane), and the field angle of view (FOV) of the optical imaging system for each of Examples 1 to 27 described in the present application. The values of f, TTL, SL, and Img HT are expressed in mm. The value of F No. is a dimensionless value. The value of FOV is expressed in degrees.

[0727] Table 55

[0728]

[0729]

[0730] The following Table 56 shows the focal length fl of the first lens, the focal length f2 of the second lens, the focal length f3 of the third lens, the focal length f4 of the fourth lens, the focal length f5 of the fifth lens, the focal length f6 of the sixth lens, and the focal length f7 of the seventh lens expressed in mm for each of Examples 1 to 27 described in the present application.

[0731] Table 56

[0732]

[0733]

[0734] The following Table 57 shows the thickness of the edge of the first lens (Ll edgeT), the thickness of the edge of the second lens (L2 edgeT), the thickness of the edge of the third lens (L3 edgeT), the thickness of the edge of the fourth lens (L4 edgeT), the thickness of the edge of the fifth lens (L5 edgeT), the thickness of the edge of the sixth lens (L6 edgeT), and the thickness of the edge of the seventh lens (L7 edgeT) expressed in mm for each of Examples 1 to 27 described in the present application.

[0735] Table 57

[0736]

[0737]

[0738] The following Table 58 shows, for each of Examples 1 to 27 described in the present application, a sag value (L5S1 sag) in mm at the distal end of the optical portion of the object side surface of the fifth lens, a sag value (L5S2 sag) in mm at the distal end of the optical portion of the image side surface of the fifth lens, a thickness (Yc71P1) of the seventh lens at the first inflection point on the object side surface of the seventh lens, a thickness (Yc71P2) of the seventh lens at the second inflection point on the object side surface of the seventh lens, and a thickness (Yc72P1) of the seventh lens at the first inflection point on the image side surface of the seventh lens.

[0739] Table 58

[0740]

[0741]

[0742] The following Table 59 shows, for each of Examples 1 to 27 described in the present application, an inner diameter of each of the first to seventh spacers. S1d is the inner diameter of the first spacer SP1, S2d is the inner diameter of the second spacer SP2, S3d is the inner diameter of the third spacer SP3, S4d is the inner diameter of the fourth spacer SP4, S5d is the inner diameter of the fifth spacer SP5, S6d is the inner diameter of the sixth spacer SP6, and S7d is the inner diameter of the seventh spacer SP7.

[0743] Table 59

[0744]

[0745]

[0746] The following Table 60 shows, for each of Examples 1 to 27 described in the present application, a volume of each of the first to seventh lenses in mm 3 L1v is the volume of the first lens, L2v is the volume of the second lens, L3v is the volume of the third lens, L4v is the volume of the fourth lens, L5v is the volume of the fifth lens, L6v is the volume of the sixth lens, and L7v is the volume of the seventh lens.

[0747] Table 60

[0748]

[0749]

[0750] The following Table 61 shows the weight of each of the first through seventh lenses in mg for each of Examples 1-27 described in the present application. Llw is the weight of the first lens, L2w is the weight of the second lens, L3w is the weight of the third lens, L4w is the weight of the fourth lens, L5w is the weight of the fifth lens, L6w is the weight of the sixth lens, and L7w is the weight of the seventh lens.

[0751] Table 61

[0752]

[0753]

[0754] The following Table 62 shows the total outer diameter (including the rib portion) of each of the first through seventh lenses in mm for each of Examples 1-27 described in the present application. LlTR is the total outer diameter of the first lens, L2TR is the total outer diameter of the second lens, L3TR is the total outer diameter of the third lens, L4TR is the total outer diameter of the fourth lens, L5TR is the total outer diameter of the fifth lens, L6TR is the total outer diameter of the sixth lens, and L7TR is the total outer diameter of the seventh lens.

[0755] Table 62

[0756]

[0757]

[0758] The following Table 63 shows the maximum thickness of the rib portion of each of the first through seventh lenses in mm for each of Examples 1-27 described in the present application. The maximum thickness of the rib portion is the thickness of the portion of the rib portion that contacts the spacer. Llrt is the maximum thickness of the rib portion of the first lens, L2rt is the maximum thickness of the rib portion of the second lens, L3rt is the maximum thickness of the rib portion of the third lens, L4rt is the maximum thickness of the rib portion of the fourth lens, L5rt is the maximum thickness of the rib portion of the fifth lens, L6rt is the maximum thickness of the rib portion of the sixth lens, and L7rt is the maximum thickness of the rib portion of the seventh lens.

[0759] Table 63

[0760]

[0761]

[0762] Figure 58 is a cross-sectional view showing an example of the seventh lens.

[0763] Figure 58The total outer diameter of the seventh lens (L7TR), the thickness of the flat portion of the rib of the seventh lens (L7rt), the thickness of the edge of the seventh lens (L7edgeT), the thickness of the seventh lens at the first inflection point on the object side surface of the seventh lens (Yc71P1), the thickness of the seventh lens at the second inflection point on the object side surface of the seventh lens (Yc71P2), and the thickness of the seventh lens at the first inflection point on the image side surface of the seventh lens (Yc72P1) are shown.

[0764] The above-described examples enable miniaturization of the optical imaging system and enable easy correction of aberration to achieve high resolution.

[0765] While the present disclosure includes specific examples, it will be apparent to one of ordinary skill in the art, after having regard to the disclosure contained herein, that various changes in form and detail can be made without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects in each example should be considered as being applicable to similar features or aspects in other examples. Suitable results can be achieved if the described techniques are performed in a different order, and / or if components in the described systems, architectures, devices, or circuits are combined in a different manner, and / or replaced or supplemented by other components or their equivalents. Therefore, the scope of the disclosure should be determined by the following claims and their equivalents, rather than by the detailed description. All modifications and alterations of the disclosure are intended to be included within the scope of the disclosure.

Claims

1. An optical imaging system, comprising: The first lens has positive refractive power, a convex object-side surface, and a concave image-side surface; The second lens has negative refractive power, a convex object side, and a concave image side; The third lens has positive refractive power and a convex object-side surface; The fourth lens has negative refractive power, a convex object-side surface, and a concave image-side surface; The fifth lens has negative refractive power, a convex object-side surface, and a concave image-side surface; The sixth lens has positive refractive power, a convex object-side surface, and a convex image-side surface; as well as The seventh lens has negative refractive power, a concave object-side surface, and a concave image-side surface. The first to the seventh lenses are arranged sequentially in numerical order from the object side of the optical imaging system toward the imaging surface of the optical imaging system along the optical axis of the optical imaging system. The optical imaging system has a total of seven lenses. The optical imaging system satisfies 0.01 < R1 / R4 < 1.3, where R1 is the radius of curvature of the object-side surface of the first lens, and R4 is the radius of curvature of the image-side surface of the second lens. The optical imaging system satisfies 0.4 < ΣTD / TTL < 0.7, where ΣTD is the sum of the thicknesses along the optical axis of the first lens to the seventh lens, and TTL is the distance along the optical axis from the object side of the first lens to the imaging surface. The optical imaging system satisfies 0.2 < ΣSD / ΣTD < 0.7, where ΣSD is the sum of the air gaps along the optical axis between the first lens and the seventh lens.

2. The optical imaging system according to claim 1, wherein, The optical imaging system satisfies 0.6 < TTL / (2 Img HT) < 0.9, where Img HT is half the diagonal length of the imaging plane.

3. The optical imaging system according to claim 1, wherein, The optical imaging system satisfies 0.6 < (R11+R14) / (2 R1) < 3.0, where R11 is the radius of curvature of the object side of the sixth lens, and R14 is the radius of curvature of the image side of the seventh lens.

4. The optical imaging system according to claim 1, wherein, The optical imaging system also satisfies 0.1 < (1 / f1+1 / f2+1 / f3+1 / f4+1 / f5+1 / f6+1 / f7) f < 0.8, where 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, and f is the total focal length of the optical imaging system.

5. The optical imaging system according to claim 4, wherein, The optical imaging system also satisfies 0.1 < (1 / f1+1 / f2+1 / f3+1 / f4+1 / f5+1 / f6+1 / f7) TTL < 1.

0.

6. The optical imaging system according to claim 1, wherein, The optical imaging system also satisfies 0.2 < TD1 / D67 < 0.8, where TD1 is the thickness of the first lens along the optical axis, and D67 is the distance along the optical axis from the object side of the sixth lens to the image side of the seventh lens.

7. The optical imaging system according to claim 1, wherein, The optical imaging system satisfies SD12 < SD34, where SD12 is the distance along the optical axis from the image-side surface of the first lens to the object-side surface of the second lens, and SD34 is the distance along the optical axis from the image-side surface of the third lens to the object-side surface of the fourth lens.

8. The optical imaging system according to claim 7, wherein, The optical imaging system satisfies SD56 < SD67, where SD56 is the distance along the optical axis from the image-side surface of the fifth lens to the object-side surface of the sixth lens, and SD67 is the distance along the optical axis from the image-side surface of the sixth lens to the object-side surface of the seventh lens.

9. The optical imaging system according to claim 8, wherein, The optical imaging system satisfies SD56 < SD34.

10. The optical imaging system according to claim 1, wherein, The optical imaging system satisfies 0.1 < R1 / R5 < 0.7, where R5 is the radius of curvature of the object-side surface of the third lens.

11. The optical imaging system according to claim 10, wherein, The optical imaging system satisfies 0.2 < R1 / R11 < 1.2, where R11 is the radius of curvature of the object-side surface of the sixth lens.

12. The optical imaging system according to claim 11, wherein, The optical imaging system satisfies 0.8 < R1 / R14 < 1.2, where R14 is the radius of curvature of the image-side surface of the seventh lens.

13. The optical imaging system according to claim 1, wherein, The third lens has a convex image-side surface.

Images