Optical imaging system

Abstract

The present application relates to an optical imaging system, which 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 the optical axis of the optical imaging system from the object side of the optical imaging system towards the imaging surface of the optical imaging system. Among them, the optical imaging system satisfies 0.5 < L1234TRavg / L7TR < 0.9, where L1234TRavg is the average value of the total outer diameters of the first lens to the fourth lens, L7TR is the total outer diameter of the seventh lens, and L1234TRavg and L7TR are expressed in the same measurement unit.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of May 21, 2019 and an application number of 201910423454.2.

[0002] Cross - reference to related applications

[0003] This application claims the priority benefits of Korean Patent Application No. 10 - 2018 - 0061396 filed with the Korean Intellectual Property Office on May 29, 2018 and Korean Patent Application No. 10 - 2018 - 0106187 filed with the Korean Intellectual Property Office on September 5, 2018. The entire disclosure content of the above - mentioned Korean patent applications is incorporated herein by reference in its entirety. Technical field

[0004] This application relates to an optical imaging system including seven lenses. Background art

[0005] Mobile terminals are usually provided with cameras for video communication or taking images. However, due to space limitations inside mobile terminals, it is difficult to achieve high performance in such cameras for mobile terminals.

[0006] Therefore, as the number of mobile terminals equipped with cameras increases, the demand for an optical imaging system that can improve the performance of camera modules without increasing the size of the camera has increased. Summary of the invention

[0007] The purpose of providing this summary section is to introduce the selection of inventive concepts in a brief form, and these inventive concepts will be further described in the detailed implementation section below. The summary section is not intended to identify the key features or essential features of the claimed subject matter, nor is it intended to assist in determining the scope of the claimed subject matter.

[0008] In a general aspect, an optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially arranged in numerical order from the object side to the imaging surface of the optical imaging system along the optical axis of the optical imaging system. Among them, the optical imaging system satisfies 0.5 < L1234TRavg / L7TR < 0.9, where L1234TRavg is the average of the total outer diameters of the first lens to the fourth lens, L7TR is the total outer diameter of the seventh lens, and L1234TRavg and L7TR are expressed in the same measurement unit.

[0009] The object side surface of the first lens may be convex.

[0010] The image side surface of the first lens may be concave.

[0011] The image side of the seventh lens may be recessed.

[0012] The distance from the object side of the first lens to the imaging surface along the optical axis may be 6 mm or less.

[0013] At least one inflection point may be formed on either or both of the object side and the image side of the sixth lens.

[0014] At least one inflection point may be formed on either or both of the object side and the image side of the seventh lens.

[0015] The optical imaging system may 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 measurement unit.

[0016] The optical imaging system may also include a spacer disposed between the sixth lens and the seventh lens, and the optical imaging system may also satisfy 0.5 < S6d / f < 1.2, where S6d is the inner diameter of the spacer, f is the total focal length of the optical imaging system, and S6d and f are expressed in the same measurement unit.

[0017] The optical imaging system may also satisfy 0.4 < L1TR / L7TR < 0.7, where L1TR is the total outer diameter of the first lens, and L1TR and L7TR are expressed in the same measurement unit.

[0018] The optical imaging system may also satisfy 0.5 < L1234TRavg / L7TR < 0.75.

[0019] The optical imaging system may also satisfy 0.5 < L12345TRavg / L7TR < 0.76, where L12345TRavg is the average of the total outer diameters of the first lens to the fifth lens, and L12345TRavg and L7TR are expressed in the same measurement unit.

[0020] The second lens may have a positive refractive power.

[0021] The third lens may have a positive refractive power.

[0022] The fifth lens may have a negative refractive power.

[0023] The paraxial region of the object side of the fifth lens may be recessed or convex.

[0024] The paraxial region of the image side of the fifth lens may be recessed or convex.

[0025] The paraxial region of the object side of the sixth lens may be recessed or convex.

[0026] The paraxial region of the image side of the sixth lens may be recessed or convex.

[0027] A paraxial region of the object-side surface of the seventh lens element may be concave or convex.

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

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

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

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

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

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

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

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

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

[0037] Fig. 9 is a view showing a fifth example of the optical imaging system.

[0038] Fig.10 Shows Fig. 9 Aberration curves of the optical imaging system.

[0039] Fig.11 is a view showing a sixth example of the optical imaging system.

[0040] Fig.12 Shows Fig.11 Aberration curves of the optical imaging system.

[0041] Fig.13 is a view showing a seventh example of the optical imaging system.

[0042] Fig.14 Shows Fig.13 Aberration curves of the optical imaging system.

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

[0044] Fig.16 Shows Fig.15 Aberration curves of the optical imaging system.

[0045] Fig.17 is a view showing a ninth example of the optical imaging system.

[0046] Fig.18 Shows Fig.17 Aberration curves of the optical imaging system.

[0047] Fig.19 is a view showing a tenth example of the optical imaging system.

[0048] Fig. 20 Shows Fig.19 Aberration curves of the optical imaging system.

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

[0050] Fig. 22 Shows Fig.21 Aberration curves of the optical imaging system.

[0051] Fig.23 is a view showing a twelfth example of the optical imaging system.

[0052] Fig.24 Shows Fig.23 Aberration curves of the optical imaging system.

[0053] Fig.25 is a view showing a thirteenth example of the optical imaging system.

[0054] Fig.26 Shows Fig.25 Aberration curves of the optical imaging system.

[0055] Fig. 27 is a view showing a fourteenth example of the optical imaging system.

[0056] Fig.28 Shows Fig. 27 Aberration curves of the optical imaging system.

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

[0058] Fig.30 Shows Fig.29Aberration curves of the optical imaging system.

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

[0060] Fig.32 Shows Fig.31 Aberration curves of the optical imaging system.

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

[0062] Fig.34 Shows Fig.33 Aberration curves of the optical imaging system.

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

[0064] Fig.36 Shows Fig.35 Aberration curves of the optical imaging system.

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

[0066] Fig.38 Shows Fig.37 Aberration curves of the optical imaging system.

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

[0068] Fig.40 Shows Fig.39 Aberration curves of the optical imaging system.

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

[0070] Fig.42 Shows Fig.41 Aberration curves of the optical imaging system.

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

[0072] Fig.44 Shows Fig.43 Aberration curves of the optical imaging system.

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

[0074] Fig.46 Shows Fig.45 Aberration curves of the optical imaging system.

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

[0076] Fig.48 Shows Fig.47 Aberration curves of the optical imaging system.

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

[0078] Fig.50 Shows Fig.49 Aberration curves of the optical imaging system.

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

[0080] Fig.52 Shows Fig.51 Aberration curves of the optical imaging system.

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

[0082] Fig.54 Shows Fig.53 Aberration curves of the optical imaging system.

[0083] Fig.55 is a view showing a twenty-eighth example of the optical imaging system.

[0084] Fig.56 Shows Fig.55 Aberration curves of the optical imaging system.

[0085] Fig.57 is a view showing a twenty-ninth example of the optical imaging system.

[0086] Fig.58 Shows Fig.57 Aberration curves of the optical imaging system.

[0087] Fig.59 and Fig.60 is a cross-sectional view showing an example of an optical imaging system and a lens barrel coupled to each other.

[0088] Fig.61 is a cross-sectional view illustrating an example of the seventh lens.

[0089] Fig.62 is a cross-sectional view showing an example of the shape of a rib portion of a lens.

[0090] Throughout the drawings and detailed description, 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 sizes, proportions, and depictions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0091] The following detailed description is provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalences of the methods, devices and / or systems described herein will be apparent. For example, except for operations that must occur in a particular order, the order of operations described herein is merely an example and is not limited to the order set forth herein, and obvious changes may be made after understanding the disclosure of the present application. In addition, for greater clarity and brevity, descriptions of features well known in the art may be omitted.

[0092] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein, which will be apparent after understanding the disclosure of the present application.

[0093] Throughout the specification, when an element such as a layer, a region, or a substrate is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” another element, or one or more other elements may be present between the element and the other element. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, other elements may not be present between the element and the other element.

[0094] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0095] Although terms such as "first", "second" and "third" may be used herein to describe various members, components, regions, layers or portions, these members, components, regions, layers or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer or portion from another member, component, region, layer or portion. Therefore, without departing from the teachings of the examples described herein, the first member, first component, first region, first layer or first portion mentioned in the examples may also be referred to as the second member, second component, second region, second layer or second portion.

[0096] Spatially relative terms such as "above", "higher", "below", and "lower" may be used herein for descriptive convenience to describe the relationship of one element relative to another element as shown in the accompanying drawings. In addition to covering the orientations depicted in the accompanying drawings, these spatially relative terms are intended to also cover different orientations of the device in use or operation. For example, if the device in the accompanying drawings is flipped, an element described as being "above" or "higher" relative to another element will be "below" or "lower" relative to the other element. Therefore, depending on the spatial orientation of the device, the term "above" covers both "above" and "below" orientations. The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

[0097] The terms used in this application are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the articles "a", "an" and "the" are intended to include plural forms as well. The words "include", "comprise" and "have" illustrate the existence of stated features, numbers, operations, components, elements and / or combinations thereof, but do not exclude the existence or addition of one or more other features, numbers, operations, components, elements and / or combinations thereof.

[0098] For ease of explanation, the thickness, size, and shape of the lenses shown in the drawings may be slightly exaggerated. In addition, the shapes of the spherical or aspherical surfaces of the lenses described in the detailed description and shown in the drawings are merely examples. That is, the shapes of the spherical or aspherical surfaces of the lenses are not limited to the examples described herein.

[0099] The values ​​of the radius of curvature, lens thickness, distances between elements including lenses or surfaces, effective semi-aperture of lenses, diameters, thicknesses and lengths of various elements are expressed in millimeters (mm), while the angles are expressed in degrees. The thickness of the lens and the distances between elements including lenses or surfaces are measured along the optical axis of the optical imaging system.

[0100] The term "effective semi-aperture" as used in this application refers to the radius of the portion of the surface (object side or image side) through which light actually passes. Thus, the effective semi-aperture may be equal to the radius of the optical portion of the lens, or may be less than the radius of the optical portion of the lens if light does not pass through the edge portion of the optical portion of the lens. The object side and image side of the lens may have different effective semi-apertures.

[0101] In this application, unless otherwise specified, references to the shape of a lens face refer to the shape of a paraxial region of the lens. The paraxial region of a lens face is the central portion of the lens face around the optical axis of the lens face, where light rays incident on the lens face form a small angle θ with the optical axis and the following approximations are valid: sinθ≈θ, tanθ≈θ, and cosθ≈1.

[0102] For example, the statement 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 statement 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. Therefore, even if the object side surface of the lens can be described as convex, the entire object side surface of the lens may not be convex, and the edge region of the object side surface of the lens may be concave. At the same time, even if the image side surface of the lens can be described as concave, the entire image side surface of the lens may not be concave, and the edge region of the image side surface of the lens may be convex.

[0103] The optical imaging system includes a plurality of lenses arranged along an optical axis. For example, the 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 arranged 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. The first lens is the lens closest to the object (or subject) to be imaged by the optical imaging system, and the seventh lens is the lens closest to the imaging surface of the optical imaging system.

[0104] Each lens of the optical imaging system includes an optical portion and a rib. The optical portion of the lens is the portion of the lens that refracts light and is generally formed at the central portion of the lens. The rib of the lens is the edge portion of the lens that enables the lens to be mounted in a lens barrel and the optical axis of the lens to be aligned with the optical axis of the optical imaging system. The rib of the lens extends radially outward from the optical portion. The optical portions of the lens are generally not in contact with each other. For example, the first lens to the seventh lens are mounted in the lens barrel so that they are spaced a predetermined distance apart from each other along the optical axis of the optical imaging system. The ribs of the lenses may selectively contact each other. For example, the ribs of the first lens to the fourth lens, the ribs of the first lens to the fifth lens, or the ribs of the second lens to the fourth lens may contact each other so that the optical axes of these lenses may be easily aligned with the optical axis of the optical imaging system.

[0105] Next, the configuration of the optical imaging system will be described.

[0106] The optical imaging system includes a plurality of lenses. For example, the 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 arranged in numerical order from the object side of the optical imaging system toward the imaging surface of the optical imaging system.

[0107] The optical imaging system 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 electrical signal. The filter is disposed between the lens and the imaging surface and blocks infrared rays in the light refracted by the first lens to the seventh lens from being incident on the imaging surface.

[0108] The optical imaging system also includes an aperture and a spacer. The aperture may be arranged before the first lens, or between two adjacent lenses among the first lens to the seventh lens, or between the object side and the image side of one of the first lens to the seventh lens, to adjust the amount of light incident on the imaging surface. Each of the spacers is arranged at a corresponding position between two lenses among the first lens to the seventh lens, or between the seventh lens and the filter, to maintain a predetermined distance between the two lenses or a predetermined distance between the seventh lens and the filter. In addition, the spacer may be made of a light-shielding material to block external light from penetrating into the rib of the lens. There may be six or seven spacers. For example, the first spacer is arranged between the first lens and the second lens, the second spacer is arranged between the second lens and the third lens, the third spacer is arranged between the third lens and the fourth lens, the fourth spacer is arranged between the fourth lens and the fifth lens, the fifth spacer is arranged between the fifth lens and the sixth lens, and the sixth spacer is arranged between the sixth lens and the seventh lens. In addition, the optical imaging system may further include a seventh spacer arranged between the sixth spacer and the seventh lens.

[0109] Next, the lens of the optical imaging system will be described.

[0110] The first lens has a refractive power. For example, the first lens has a positive refractive power or a negative refractive power. A surface of the first lens may be convex. For example, the object side surface of the first lens may be convex. A surface of the first lens may be concave. For example, the image side surface of the first lens may be concave. The first lens may have an aspherical surface. For example, one or both surfaces of the first lens may be aspherical.

[0111] The second lens has a refractive power. For example, the second lens has a positive refractive power or a negative refractive power. At least one surface of the second lens may be convex. For example, the object side surface of the second lens may be convex, or both the object side surface and the image side surface of the second lens may be convex. At least one surface of the second lens may be concave. For example, the image side surface of the second lens may be concave, or both the object side surface and the image side surface of the second lens may be concave. The second lens may have an aspherical surface. For example, one or both surfaces of the second lens may be aspherical.

[0112] The third lens has a refractive power. For example, the third lens has a positive refractive power or a negative refractive power. One surface of the third lens may be convex. For example, the object side surface or the image side surface of the third lens may be convex. One surface of the third lens may be concave. For example, the object side surface or the image side surface of the third lens may be concave. The third lens may have an aspherical surface. For example, one surface or both surfaces of the third lens may be aspherical.

[0113] The fourth lens has a refractive power. For example, the fourth lens has a positive refractive power or a negative refractive power. At least one surface of the fourth lens may be convex. For example, the object side surface or the image side surface of the fourth lens may be convex, or both the object side surface and the image side surface of the fourth lens may be convex. A surface of the fourth lens may be concave. For example, the object side surface or the image side surface of the fourth lens may be concave. The fourth lens may have an aspherical surface. For example, one surface or both surfaces of the fourth lens may be aspherical.

[0114] The fifth lens has a refractive power. For example, the fifth lens has a positive refractive power or a negative refractive power. One surface of the fifth lens may be convex. For example, the object side surface or the image side surface of the fifth lens may be convex. One surface of the fifth lens may be concave. For example, the object side surface or the image side surface of the fifth lens may be concave. The fifth lens may have an aspherical surface. For example, one surface or both surfaces of the fifth lens may be aspherical.

[0115] The sixth lens has a refractive power. For example, the sixth lens has a positive refractive power or a negative refractive power. At least one surface of the sixth lens may be convex. For example, the object side surface or the image side surface of the sixth lens may be convex, or both the object side surface and the image side surface of the sixth lens may be convex. At least one surface of the sixth lens may be concave. For example, the object side surface or the image side surface of the sixth lens may be concave, or both the object side surface and the image side surface of the sixth lens may be concave. At least one surface of the sixth lens may have at least one inflection point. 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, at least one inflection point may be formed on either or both of the object side surface and the image side surface of the sixth lens. Therefore, at least one surface of the sixth lens may have a paraxial region and an edge region having shapes different from each other. For example, the paraxial region of the image side surface of the sixth lens may be concave, but the edge region of the image side surface of the sixth lens may be convex. The sixth lens may have an aspherical surface. For example, one or both surfaces of the sixth lens may be aspherical.

[0116] The seventh lens has a refractive power. For example, the seventh lens has a positive refractive power or a negative refractive power. One surface of the seventh lens may be convex. For example, the object side surface of the seventh lens may be convex. At least one surface of the seventh lens may be concave. For example, the image side surface of the seventh lens may be concave, or both the object side surface and the image side surface of the seventh lens may be concave. At least one surface of the seventh lens may have at least one inflection point. At least one inflection point may be formed on either or both of the object side surface and the image side surface of the seventh lens. Therefore, at least one surface of the seventh lens may have a paraxial region and an edge region with different shapes from each other. For example, the paraxial region of the image side surface of the seventh lens may be concave, but the edge region of the image side surface of the seventh lens may be convex. The seventh lens may have an aspherical surface. For example, one or both surfaces of the seventh lens may be aspherical.

[0117] The lenses of the optical imaging system can be made of an optical material with a high light transmittance. For example, the first lens to the seventh lens can be made of a plastic material. However, the materials of the first lens to the seventh lens are not limited to plastic materials.

[0118] The aspherical surfaces of the first lens to the seventh lens are represented by Equation 1 below.

[0119]

[0120] In Equation 1, c is the curvature of the 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 the conic constant, Y is the distance from a certain point on the aspherical surface of the lens in the direction perpendicular to the optical axis to the optical axis of the lens, A to H are aspherical constants, and Z (or sag) is the distance between a certain point on the aspherical surface of the lens where the distance to the optical axis is Y and the tangent plane perpendicular to the optical axis that intersects the vertex of the aspherical surface of the lens. Some examples disclosed in this application include the aspherical constant J. The additional term JY 20 can be added to Equation 1 to reflect the influence of the aspherical constant J.

[0121] The optical imaging system can satisfy one or more of the following conditional expressions 1 to 5.

[0122] 0.1 < L1w / L7w < 0.4 (Conditional Expression 1)

[0123] 0.5 < S6d / f < 1.4 (Conditional Expression 2)

[0124] 0.4 < L1TR / L7TR < 0.8 (Conditional Expression 3)

[0125] 0.5 < L1234TRavg / L7TR < 0.9 (Conditional Expression 4)

[0126] 0.5 < L12345TRavg / L7TR < 0.9 (Conditional expression 5)

[0127] In the above conditional expressions, L1w is the weight of the first lens in mg, and L7w is the weight of the seventh lens in mg.

[0128] S6d is the inner diameter of the sixth spacer in mm, and f is the total focal length of the optical imaging system in mm.

[0129] L1TR is the total outer diameter of the first lens, and L7TR is the total outer diameter of the seventh lens in mm. The total outer diameter of a lens is the diameter of the lens, including the optical part of the lens and the ribs of the lens.

[0130] L1234TRavg is the average of the total outer diameters of the first lens to the fourth lens in mm, and L12345TRavg is the average of the total outer diameters of the first lens to the fifth lens in mm.

[0131] Conditional expressions 1 and 3 specify the ranges of the weight ratio and the total outer diameter ratio between the first lens and the seventh lens to facilitate self-alignment between the lenses and alignment through the lens barrel.

[0132] Conditional expression 2 specifies the range of the ratio of the inner diameter of the sixth spacer to the total focal length of the optical imaging system to minimize the scintillation phenomenon.

[0133] Conditional expressions 4 and 5 specify the total outer diameter ratio between the lenses to facilitate aberration correction.

[0134] The optical imaging system may also satisfy one or more of the following conditional expressions 6 to 10:

[0135] 0.1 < L1w / L7w < 0.3 (Conditional expression 6)

[0136] 0.5 < S6d / f < 1.2 (Conditional expression 7)

[0137] 0.4 < L1TR / L7TR < 0.7 (Conditional expression 8)

[0138] 0.5 < L1234TRavg / L7TR < 0.75 (Conditional expression 9)

[0139] 0.5 < L12345TRavg / L7TR < 0.76 (Conditional expression 10)

[0140] Conditional expressions 6 to 10 are the same as conditional expressions 1 to 5, except that conditional expressions 6 to 10 specify narrower ranges.

[0141] The optical imaging system can also satisfy one or more of the following conditional expressions 11 to 31:

[0142] 0.01 < R1 / R4 < 1.3 (Conditional Expression 11)

[0143] 0.1 < R1 / R5 < 0.7 (Conditional Expression 12)

[0144] 0.05 < R1 / R6 < 0.9 (Conditional Expression 13)

[0145] 0.2 < R1 / R11 < 1.2 (Conditional Expression 14)

[0146] 0.8 < R1 / R14 < 1.2 (Conditional Expression 15)

[0147] 0.6 < (R11 + R14) / (2*R1) < 3.0 (Conditional Expression 16)

[0148] 0.4 < D13 / D57 < 1.2 (Conditional Expression 17)

[0149] 0.1 < (1 / f1 + 1 / f2 + 1 / f3 + 1 / f4 + 1 / f5 + 1 / f6 + 1 / f7)*f < 0.8 (Conditional Expression 18)

[0150] 0.1 < (1 / f1 + 1 / f2 + 1 / f3 + 1 / f4 + 1 / f5 + 1 / f6 + 1 / f7)*TTL < 1.0 (Conditional Expression 19)

[0151] 0.2 < TD1 / D67 < 0.8 (Conditional Expression 20)

[0152] 0.1 < (R11 + R14) / (R5 + R6) < 1.0 (Conditional Expression 21)

[0153] SD12 < SD34 (Conditional Expression 22)

[0154] SD56 < SD67 (Conditional Expression 23)

[0155] SD56 < SD34 (Conditional Expression 24)

[0156] 0.6 < TTL / (2*(IMG HT)) < 0.9 (Conditional Expression 25)

[0157] 0.2 < ΣSD / ΣTD < 0.7 (Conditional Expression 26)

[0158] 0 < min(f1:f3) / max(f4:f7) < 0.4 (Conditional Expression 27)

[0159] 0.4 < (ΣTD) / TTL < 0.7 (Condition Expression 28)

[0160] 0.7 < SL / TTL < 1.0 (Condition Expression 29)

[0161] 0.81 < f12 / f123 < 0.96 (Condition Expression 30)

[0162] 0.6 < f12 / f1234 < 0.84 (Condition Expression 31)

[0163] 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, and R14 is the radius of curvature of the image side surface of the seventh lens.

[0164] D13 is the distance along the optical axis of the optical imaging system from the object side surface of the first lens to the image side surface of the third lens, and D57 is the distance along the optical axis from the object side surface of the fifth lens to the image side surface of the seventh lens.

[0165] 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 TTL is the distance along the optical axis from the object side surface of the first lens to the imaging surface of the image sensor of the optical imaging system.

[0166] 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 surface of the sixth lens to the image side surface of the seventh lens.

[0167] 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, 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, 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.

[0168] IMG HT is half of the diagonal length of the imaging surface of the image sensor.

[0169] ΣSD is the sum of the air gaps along the optical axis between the lenses, and ΣTD is the sum of the thicknesses of the lenses along the optical axis. The air gap is the distance along the optical axis between adjacent lenses.

[0170] min(f1:f3) is the minimum value of the absolute values ​​of the focal lengths of the first to third lenses, and max(f4:f7) is the maximum value of the absolute values ​​of the focal lengths of the fourth to seventh lenses.

[0171] SL is the distance along the optical axis from the aperture to the imaging surface of the image sensor.

[0172] f12 is the combined focal length of the first lens and the second lens, f123 is the combined focal length of the first lens to the third lens, and f1234 is the combined focal length of the first lens to the fourth lens.

[0173] Conditional Expression 11 specifies the design range of the second lens to minimize the aberration caused by the first lens. For example, for the second lens having a curvature radius exceeding the upper limit value of Conditional Expression 11, it is difficult to expect sufficient correction of longitudinal spherical aberration, and for the second lens having a curvature radius below the lower limit value of Conditional Expression 11, it is difficult to expect sufficient correction of astigmatism field curvature.

[0174] Conditional expressions 12 and 13 specify the design range of the third lens to minimize the aberration caused by the first lens. For example, for the third lens having a curvature radius exceeding the upper limit value of conditional expression 12 or 13, it is difficult to expect sufficient correction of longitudinal spherical aberration, and for the third lens having a curvature radius below the lower limit value of conditional expression 12 or 13, it is difficult to expect sufficient correction of astigmatism field curvature.

[0175] Conditional Expression 14 specifies the design range of the sixth lens to minimize the aberration caused by the first lens. For example, for the sixth lens having a curvature radius exceeding the upper limit value of Conditional Expression 14, it is difficult to expect sufficient correction of longitudinal spherical aberration, while the sixth lens having a curvature radius below the lower limit value of Conditional Expression 14 is prone to cause a scintillation phenomenon.

[0176] Conditional Expression 15 specifies the design range of the seventh lens to minimize the aberration caused by the first lens. For example, for the seventh lens having a curvature radius exceeding the upper limit value of Conditional Expression 15, it is difficult to expect sufficient correction of longitudinal spherical aberration, while the seventh lens having a curvature radius below the lower limit value of Conditional Expression 15 is prone to cause curvature of the imaging surface.

[0177] Conditional Expression 16 specifies the ratio of the sum of the radii of curvature of the sixth lens and the seventh lens to twice the radius of curvature of the first lens in order to correct longitudinal spherical aberration and achieve excellent optical performance.

[0178] Conditional expression 17 specifies the ratio of the optical imaging system that can be installed in a compact terminal. For example, a ratio of the optical imaging system exceeding the upper limit value of conditional expression 17 may cause a problem that the total length of the optical imaging system becomes longer, while a ratio of the optical imaging system below the lower limit value of conditional expression 17 may cause a problem that the cross-section of the optical imaging system becomes larger.

[0179] Conditional expressions 18 and 19 specify the refractive power ratio of the first lens to the seventh lens to facilitate mass production of the optical imaging system. For example, an optical imaging system having a refractive power ratio exceeding the upper limit value of conditional expression 18 or 19 or below the lower limit value of conditional expression 18 or 19 is difficult to commercialize because the refractive power of one or more lenses among the first lens to the seventh lens is too large.

[0180] Conditional Expression 20 specifies the thickness range of the first lens to realize a compact optical imaging system. For example, a first lens having a thickness exceeding the upper limit value of Conditional Expression 20 or below the lower limit value of Conditional Expression 20 is too thick or too thin to be manufactured.

[0181] Conditional Expression 22 specifies the design conditions of the first to fourth lenses to improve chromatic aberration. For example, a case where the distance between the first lens and the second lens is shorter than the distance between the third lens and the fourth lens is advantageous in improving chromatic aberration.

[0182] Conditional Expressions 25 to 28 specify design conditions for realizing a compact optical imaging system. For example, a lens deviating from the numerical range of Conditional Expression 26 or 28 is difficult to form by injection molding and processing.

[0183] Conditional expressions 29 to 31 specify design conditions of the optical imaging system considering the stop position. For example, an optical imaging system that does not satisfy one or more of conditional expressions 29 to 31 may have a longer total length due to the refractive power of a lens disposed behind the stop.

[0184] Next, a plurality of examples of optical imaging systems will be described. In the table described below, S0 represents the distance from the aperture or the subject (object) to the object side of the first lens, S1 represents the object side surface of the first lens, S2 represents the image side surface of the first lens, S3 represents the object side surface of the second lens, S4 represents the image side surface of the second lens, S5 represents the object side surface of the third lens, S6 represents the image side surface of the third lens, S7 represents the object side surface of the fourth lens, S8 represents the image side surface of the fourth lens, S9 represents the object side surface of the fifth lens, S10 represents the image side surface of the fifth lens, S11 represents the object side surface of the sixth lens, S12 represents the image side surface of the sixth lens, S13 represents the object side surface of the seventh lens, S14 represents the image side surface of the seventh lens, S15 represents the object side surface of the filter, S16 represents the image side surface of the filter, and S17 represents the imaging surface.

[0185] First example

[0186] 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.

[0187] The optical imaging system 1 includes a first lens 1001 , a second lens 2001 , a third lens 3001 , a fourth lens 4001 , a fifth lens 5001 , a sixth lens 6001 and a seventh lens 7001 .

[0188] The first lens 1001 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2001 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3001 has a positive refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4001 has a negative refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5001 has a negative refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6001 has a positive refractive power, a convex object side surface, and a convex image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6001. The seventh lens 7001 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7001.

[0189] The optical imaging system 1 further includes an aperture, a filter 8001, and an image sensor 9001. The aperture is disposed between the first lens 1001 and the second lens 2001 to adjust the amount of light incident on the image sensor 9001. The filter 8001 is disposed between the seventh lens 7001 and the image sensor 9001 to block infrared rays. The image sensor 9001 forms an imaging surface on which an image of an object is formed. Figure 1Although not shown in the figure, the aperture stop is set at a distance of 0.818 mm from the object side surface of the first lens 1001 in the direction toward the imaging surface of the optical imaging system 1. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 1 listed in Table 59 presented later in this application.

[0190] Table 1 below shows Figure 1 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 2 below. Figure 1 The aspheric coefficient of the lens.

[0191] Table 1

[0192]

[0193]

[0194] Table 2

[0195] K A B C D E F G H J S1 -1.0302 0.0182 0.0322 -0.072 0.1129 -0.1074 0.0607 -0.0187 0.0023 0 S2 9.4302 -0.101 0.1415 -0.1169 0.0389 0.0135 -0.0204 0.0086 -0.0013 0 S3 0 0 0 0 0 0 0 0 0 0 S4 -0.5054 -0.107 0.153 0.0098 -0.2968 0.4771 -0.3575 0.1295 -0.0146 0 S5 0 -0.0525 0.0235 -0.1143 0.214 -0.2648 0.1771 -0.0552 0.0055 0 S6 -99 -0.1114 0.0792 -0.2021 0.2673 -0.1852 0.0195 0.0443 -0.0169 0 S7 0 -0.2008 0.1406 -0.378 0.4531 -0.181 -0.098 0.1117 -0.0281 0 S8 0 -0.2058 0.305 -0.5999 0.7319 -0.5351 0.226 -0.0525 0.0056 0 S9 0 -0.2836 0.4674 -0.4717 0.281 -0.0742 -0.0163 0.0146 -0.0024 0 S10 2.8626 -0.3169 0.3012 -0.217 0.1252 -0.0559 0.0174 -0.0033 0.0003 0 S11 -19.534 -0.0721 -0.0068 0.001 0.0098 -0.009 0.003 -0.0004 8E-06 0 S12 -1.1368 0.1733 -0.17 0.0787 -0.017 0.001 0.0003 -8E-05 5E-06 0 S13 -13.433 -0.0852 -0.045 0.0567 -0.0213 0.0042 -0.0005 3E-05 -8E-07 0 S14 -0.6859 -0.1597 0.0728 -0.0275 0.0078 -0.0016 0.0002 -2E-05 1E-06 -3.04E-08

[0196] Second example

[0197] Figure 3 is a view showing a second example of the optical imaging system, and Figure 4 Shows Figure 3 Aberration curves of the optical imaging system.

[0198] The optical imaging system 2 includes a first lens 1002 , a second lens 2002 , a third lens 3002 , a fourth lens 4002 , a fifth lens 5002 , a sixth lens 6002 and a seventh lens 7002 .

[0199] The first lens 1002 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2002 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3002 has a positive refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4002 has a negative refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5002 has a negative refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6002 has a positive refractive power, a convex object side surface, and a convex image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6002. The seventh lens 7002 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7002.

[0200] The optical imaging system 2 further includes an aperture, a filter 8002, and an image sensor 9002. The aperture is disposed between the first lens 1002 and the second lens 2002 to adjust the amount of light incident on the image sensor 9002. The filter 8002 is disposed between the seventh lens 7002 and the image sensor 9002 to block infrared rays. The image sensor 9002 forms an imaging surface on which an image of an object is formed. Figure 3 Although not shown in the figure, the aperture stop is set at a distance of 0.819 mm from the object side surface of the first lens 1002 in the direction toward the imaging surface of the optical imaging system 2. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 2 listed in Table 59 presented later in this application.

[0201] Table 3 below shows Figure 3 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 4 below. Figure 3 The aspheric coefficient of the lens.

[0202] Table 3

[0203]

[0204]

[0205] Table 4

[0206] K A B C D E F G H J S1 -1.0874 0.0187 0.0233 -0.0517 0.0813 -0.0771 0.0432 -0.0131 0.0016 0 S2 11.207 -0.0709 0.0738 -0.0447 -0.0034 0.0253 -0.0199 0.0073 -0.0011 0 S3 0 0 0 0 0 0 0 0 0 0 S4 -1.7159 -0.1013 0.1283 -0.0099 -0.1404 0.2054 -0.1306 0.0362 -0.0005 0 S5 0 -0.0351 0.0048 -0.0722 0.1328 -0.1508 0.0837 -0.0151 -0.0012 0 S6 -99 -0.0907 0.0028 0.0075 -0.057 0.1124 -0.1283 0.0764 -0.0179 0 S7 0 -0.1848 0.0969 -0.4021 0.8416 -0.9593 0.6237 -0.2186 0.0322 0 S8 0 -0.1431 0.1435 -0.4108 0.6792 -0.6541 0.3692 -0.1151 0.0155 0 S9 0 -0.1884 0.2972 -0.3652 0.3066 -0.1803 0.0694 -0.0165 0.0019 0 S10 3.6183 -0.2804 0.2545 -0.2142 0.1489 -0.0761 0.0249 -0.0045 0.0003 0 S11 -19.534 -0.034 -0.0509 0.0367 -0.0233 0.0117 -0.004 0.0008 -7E-05 0 S12 -0.8103 0.148 -0.1502 0.0738 -0.0262 0.0082 -0.0018 0.0002 -1E-05 0 S13 -17.021 -0.1404 0.0048 0.0311 -0.0133 0.0027 -0.0003 2E-05 -4E-07 0 S14 -0.6481 -0.1705 0.0806 -0.0297 0.0082 -0.0017 0.0002 -2E-05 1E-06 -3E-08

[0207] Third Example

[0208] Figure 5 is a view showing a third example of the optical imaging system, and Figure 6 Shows Figure 5 Aberration curves of the optical imaging system.

[0209] The optical imaging system 3 includes a first lens 1003 , a second lens 2003 , a third lens 3003 , a fourth lens 4003 , a fifth lens 5003 , a sixth lens 6003 and a seventh lens 7003 .

[0210] The first lens 1003 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2003 has a positive refractive power, a convex object side surface, and a convex image side surface. The third lens 3003 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4003 has a positive refractive power, a concave object side surface, and a convex image side surface. The fifth lens 5003 has a positive refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6003 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6003. The seventh lens 7003 has a positive refractive power, a convex object side surface, and a concave image side surface. In addition, two inflection points are formed on the object side surface of the seventh lens 7003, and one inflection point is formed on the image side surface of the seventh lens 7003.

[0211] The optical imaging system 3 further includes an aperture, a filter 8003, and an image sensor 9003. The aperture is disposed between the second lens 2003 and the third lens 3003 to adjust the amount of light incident on the image sensor 9003. The filter 8003 is disposed between the seventh lens 7003 and the image sensor 9003 to block infrared rays. The image sensor 9003 forms an imaging plane, and an image of an object is formed on the imaging plane. Although Figure 5 Although not shown in the figure, the aperture stop is set at a distance of 1.269 mm from the object side surface of the first lens 1003 in the direction toward the imaging surface of the optical imaging system 3. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 3 listed in Table 59 presented later in this application.

[0212] Table 5 below shows Figure 5 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 6 below. Figure 5 The aspheric coefficient of the lens.

[0213] Table 5

[0214]

[0215] Table 6

[0216] K A B C D E F G H J S1 -7.5196 0.0675 -0.0698 0.0244 -0.0005 -0.0217 0.0206 -0.0071 0.0008 0 S2 -19.661 -0.0151 -0.0861 0.0413 0.0298 -0.039 0.0177 -0.0036 0.0002 0 S3 0.042 -0.0353 -0.035 0.0213 0.0118 0.039 -0.0637 0.0319 -0.0057 0 S4 0 0.0138 -0.0906 0.077 0.0651 -0.1861 0.1549 -0.0588 0.0085 0 S5 -5.6502 -0.0674 0.0271 -0.09 0.3133 -0.4772 0.3722 -0.1445 0.0223 0 S6 0.5327 -0.095 0.1043 -0.1591 0.2628 -0.3071 0.2264 -0.0923 0.017 0 S7 0 -0.0225 -0.0148 -0.069 0.2153 -0.2647 0.159 -0.0441 0.0038 0 S8 0 -0.014 -0.0765 0.0175 0.0813 -0.0977 0.0453 -0.0076 0 0 S9 -44.395 0.1485 -0.2238 0.1807 -0.1245 0.0673 -0.0262 0.0059 -0.0005 0 S10 -4.0715 -0.0248 0.0377 -0.0832 0.0717 -0.036 0.0107 -0.0017 0.0001 0 S11 -1.1211 0.0048 -0.1328 0.1439 -0.1087 0.0484 -0.0119 0.0015 -8E-05 0 S12 0.0464 -0.1304 0.0607 -0.038 0.0125 -0.0018 4E-05 2E-05 -2E-06 0 S13 -0.795 -0.4234 0.1968 -0.0585 0.0131 -0.0023 0.0003 -3E-05 2E-06 -4E-08 S14 -1.3233 -0.2821 0.1513 -0.0644 0.0208 -0.0048 0.0007 -7E-05 4E-06 -8E-08

[0217] Fourth Example

[0218] Figure 7 is a view showing a fourth example of the optical imaging system, and Figure 8 Shows Figure 7 Aberration curves of the optical imaging system.

[0219] The optical imaging system 4 includes a first lens 1004 , a second lens 2004 , a third lens 3004 , a fourth lens 4004 , a fifth lens 5004 , a sixth lens 6004 and a seventh lens 7004 .

[0220] The first lens 1004 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2004 has a positive refractive power, a convex object side surface, and a convex image side surface. The third lens 3004 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4004 has a negative refractive power, a concave object side surface, and a convex image side surface. The fifth lens 5004 has a positive refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6004 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6004. The seventh lens 7004 has a positive refractive power, a convex object side surface, and a concave image side surface. In addition, two inflection points are formed on the object side surface of the seventh lens 7004, and one inflection point is formed on the image side surface of the seventh lens 7004.

[0221] The optical imaging system 4 further includes an aperture, a filter 8004, and an image sensor 9004. The aperture is disposed between the second lens 2004 and the third lens 3004 to adjust the amount of light incident on the image sensor 9004. The filter 8004 is disposed between the seventh lens 7004 and the image sensor 9004 to block infrared rays. The image sensor 9004 forms an imaging surface on which an image of an object is formed. Figure 7 Although not shown in the figure, the aperture stop is set at a distance of 1.259 mm from the object side surface of the first lens 1004 in the direction toward the imaging surface of the optical imaging system 4. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 4 listed in Table 59 presented later in this application.

[0222] Table 7 below shows Figure 7 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 8 below. Figure 7 The aspheric coefficient of the lens.

[0223] Table 7

[0224]

[0225] Table 8

[0226]

[0227]

[0228] Fifth example

[0229] Fig. 9 is a view showing a fifth example of the optical imaging system, and Fig.10 Shows Fig. 9 Aberration curves of the optical imaging system.

[0230] The optical imaging system 5 includes a first lens 1005 , a second lens 2005 , a third lens 3005 , a fourth lens 4005 , a fifth lens 5005 , a sixth lens 6005 and a seventh lens 7005 .

[0231] The first lens 1005 has a positive refractive power, a convex object side surface and a concave image side surface. The second lens 2005 has a positive refractive power, a convex object side surface and a convex image side surface. The third lens 3005 has a negative refractive power, a convex object side surface and a concave image side surface. The fourth lens 4005 has a negative refractive power, a concave object side surface and a convex image side surface. The fifth lens 5005 has a positive refractive power, a convex object side surface and a concave image side surface. The sixth lens 6005 has a negative refractive power, a convex object side surface and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6005. The seventh lens 7005 has a positive refractive power, a convex object side surface and a concave image side surface. In addition, two inflection points are formed on the object side surface of the seventh lens 7005, and one inflection point is formed on the image side surface of the seventh lens 7005.

[0232] The optical imaging system 5 further includes an aperture, a filter 8005, and an image sensor 9005. The aperture is disposed between the second lens 2005 and the third lens 3005 to adjust the amount of light incident on the image sensor 9005. The filter 8005 is disposed between the seventh lens 7005 and the image sensor 9005 to block infrared rays. The image sensor 9005 forms an imaging surface on which an image of an object is formed. Fig. 9 Although not shown in the figure, the aperture stop is set at a distance of 1.169 mm from the object side surface of the first lens 1005 in the direction toward the imaging surface of the optical imaging system 5. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 5 listed in Table 59 presented later in this application.

[0233] Table 9 below shows Fig. 9 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 10 below. Fig. 9 The aspheric coefficient of the lens.

[0234] Table 9

[0235]

[0236] Table 10

[0237]

[0238]

[0239] Sixth Example

[0240] Fig.11 is a view showing a sixth example of the optical imaging system, and Fig.12 Shows Fig.11 Aberration curves of the optical imaging system.

[0241] The optical imaging system 6 includes a first lens 1006 , a second lens 2006 , a third lens 3006 , a fourth lens 4006 , a fifth lens 5006 , a sixth lens 6006 and a seventh lens 7006 .

[0242] The first lens 1006 has a negative refractive power, a convex object side surface, and a concave image side surface. The second lens 2006 has a positive refractive power, a convex object side surface, and a concave image side surface. The third lens 3006 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4006 has a negative refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5006 has a positive refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6006 has a positive refractive power, a convex object side surface, and a convex image side surface. In addition, at least one inflection point is formed on any one or both of the object side surface and the image side surface of the sixth lens 6006. The seventh lens 7006 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7006.

[0243] The optical imaging system 6 further includes an aperture, a filter 8006, and an image sensor 9006. The aperture is disposed between the first lens 1006 and the second lens 2006 to adjust the amount of light incident on the image sensor 9006. The filter 8006 is disposed between the seventh lens 7006 and the image sensor 9006 to block infrared rays. The image sensor 9006 forms an imaging surface on which an image of an object is formed. Fig.11 Although not shown in FIG. 1 , the aperture stop is set at a distance of 0.383 mm from the object side surface of the first lens 1006 in the direction toward the imaging surface of the optical imaging system 6. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 6 listed in Table 59 presented later in this application.

[0244] Table 11 below shows Fig.11 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 12 below. Fig.11 The aspheric coefficient of the lens.

[0245] Table 11

[0246]

[0247]

[0248] Table 12

[0249] K A B C D E F G H S1 -3.5715 0.0005 0.0011 -0.0181 0.0025 0.0107 -0.0084 0.0026 -0.0003 S2 -9.1496 -0.0513 -0.0055 0.0116 0.0161 -0.0207 0.0078 -0.001 0 S3 -2.5622 -0.0879 0.1115 -0.1204 0.1625 -0.1325 0.0578 -0.0118 0.0006 S4 -90 -0.078 0.2103 -0.4384 0.6397 -0.6153 0.3736 -0.1288 0.0189 S5 0 -0.1133 0.2975 -0.5447 0.7496 -0.7199 0.4525 -0.1642 0.0257 S6 4.6946 -0.0705 0.1434 -0.2144 0.1998 -0.0956 -0.0142 0.0399 -0.0137 S7 0 -0.0972 0.1221 -0.3303 0.5457 -0.6222 0.4555 -0.1995 0.0405 S8 0 -0.1596 0.2027 -0.3281 0.3412 -0.2472 0.1212 -0.0385 0.0064 S9 -18.27 -0.0564 -0.0069 0.0518 -0.0566 0.0228 -0.0011 -0.0019 0.0004 S10 -15.127 -0.0603 -0.0145 0.0594 -0.0601 0.0318 -0.0096 0.0015 -1E-04 S11 0 0.0027 -0.0398 0.025 -0.0137 0.005 -0.001 1E-04 -4E-06 S12 -1.1693 0.1224 -0.1006 0.0535 -0.0195 0.005 -0.0008 8E-05 -3E-06 S13 -4.4446 -0.097 -0.0137 0.0358 -0.0141 0.0028 -0.0003 2E-05 -5E-07 S14 -8.7431 -0.0906 0.0342 -0.009 0.0017 -0.0002 2E-05 -1E-06 3E-08

[0250] Example 7

[0251] Fig.13 is a view showing a seventh example of the optical imaging system, and Fig.14 Shows Fig.13 Aberration curves of the optical imaging system.

[0252] The optical imaging system 7 includes a first lens 1007 , a second lens 2007 , a third lens 3007 , a fourth lens 4007 , a fifth lens 5007 , a sixth lens 6007 and a seventh lens 7007 .

[0253] The first lens 1007 has a negative refractive power, a convex object side surface and a concave image side surface. The second lens 2007 has a positive refractive power, a convex object side surface and a concave image side surface. The third lens 3007 has a negative refractive power, a convex object side surface and a concave image side surface. The fourth lens 4007 has a negative refractive power, a convex object side surface and a concave image side surface. The fifth lens 5007 has a positive refractive power, a convex object side surface and a concave image side surface. The sixth lens 6007 has a positive refractive power, a convex object side surface and a convex image side surface. In addition, at least one inflection point is formed on any one or both of the object side surface and the image side surface of the sixth lens 6007. The seventh lens 7007 has a negative refractive power, a concave object side surface and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7007.

[0254] The optical imaging system 7 further includes an aperture, a filter 8007, and an image sensor 9007. The aperture is disposed between the first lens 1007 and the second lens 2007 to adjust the amount of light incident on the image sensor 9007. The filter 8007 is disposed between the seventh lens 7007 and the image sensor 9007 to block infrared rays. The image sensor 9007 forms an imaging surface on which an image of an object is formed. Fig.13 Although not shown in the figure, the aperture stop is set at a distance of 0.406 mm from the object side surface of the first lens 1007 in the direction toward the imaging surface of the optical imaging system 7. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 7 listed in Table 59 presented later in this application.

[0255] Table 13 below shows Fig.13 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 14 below. Fig.13 The aspheric coefficient of the lens.

[0256] Table 13

[0257]

[0258]

[0259] Table 14

[0260] K A B C D E F G H S1 -3.5658 -7E-05 0.0019 -0.0092 0.0011 0.0033 -0.0021 0.0005 -5E-05 S2 -8.9286 -0.0352 -0.0028 0.0051 0.0057 -0.0059 0.0017 -0.0002 0 S3 -2.4366 -0.0674 0.07 -0.0576 0.0566 -0.0335 0.0101 -0.0011 -5E-05 S4 100 -0.0532 0.1076 -0.1828 0.2279 -0.188 0.0972 -0.0281 0.0034 S5 0 -0.08 0.1571 -0.2194 0.2412 -0.1897 0.098 -0.029 0.0037 S6 4.6754 -0.0522 0.0819 -0.0948 0.0738 -0.0366 0.0059 0.0034 -0.0014 S7 0 -0.0681 0.0624 -0.1419 0.1974 -0.1902 0.1178 -0.0435 0.0074 S8 0 -0.1149 0.119 -0.1633 0.1494 -0.0968 0.0424 -0.0116 0.0015 S9 -18.968 -0.0403 -0.0067 0.0231 -0.0177 0.0048 0.0003 -0.0004 7E-05 S10 -15.615 -0.0435 -0.0045 0.0194 -0.0155 0.0065 -0.0016 0.0002 -1E-05 S11 0 -0.0047 -0.014 0.0069 -0.0046 0.0019 -0.0004 4E-05 -2E-06 S12 -1.1609 0.0886 -0.0595 0.0289 -0.0106 0.0028 -0.0004 4E-05 -1E-06 S13 -4.7786 -0.0727 -0.0022 0.0133 -0.0043 0.0007 -6E-05 3E-06 -5E-08 S14 -8.9618 -0.0676 0.0222 -0.0053 0.0009 -0.0001 9E-06 -4E-07 7E-09

[0261] Example 8

[0262] Fig.15 is a view showing an eighth example of the optical imaging system, and Fig.16 Shows Fig.15 Aberration curves of the optical imaging system.

[0263] The optical imaging system 8 includes a first lens 1008 , a second lens 2008 , a third lens 3008 , a fourth lens 4008 , a fifth lens 5008 , a sixth lens 6008 and a seventh lens 7008 .

[0264] The first lens 1008 has a negative refractive power, a convex object side surface, and a concave image side surface. The second lens 2008 has a positive refractive power, a convex object side surface, and a concave image side surface. The third lens 3008 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4008 has a negative refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5008 has a positive refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6008 has a positive refractive power, a convex object side surface, and a convex image side surface. In addition, at least one inflection point is formed on any one or both of the object side surface and the image side surface of the sixth lens 6008. The seventh lens 7008 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7008.

[0265] The optical imaging system 8 further includes an aperture, a filter 8008, and an image sensor 9008. The aperture is disposed between the first lens 1008 and the second lens 2008 to adjust the amount of light incident on the image sensor 9008. The filter 8008 is disposed between the seventh lens 7008 and the image sensor 9008 to block infrared rays. The image sensor 9008 forms an imaging surface on which an image of an object is formed. Fig.15Although not shown in the figure, the aperture stop is set at a distance of 0.335 mm from the object side surface of the first lens 1008 in the direction toward the imaging surface of the optical imaging system 8. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 8 listed in Table 59 presented later in this application.

[0266] Table 15 below shows Fig.15 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 16 below. Fig.15 The aspheric coefficient of the lens.

[0267] Table 15

[0268]

[0269]

[0270] Table 16

[0271] K A B C D E F G H S1 -3.5658 -0.0001 0.005 -0.035 0.006 0.0273 -0.0256 0.0093 -0.0013 S2 -8.9286 -0.0626 -0.0074 0.0197 0.0322 -0.0484 0.0209 -0.0032 0 S3 -2.4366 -0.1197 0.1825 -0.2203 0.3179 -0.276 0.1215 -0.0196 -0.0013 S4 100 -0.0946 0.2806 -0.6992 1.2789 -1.5482 1.1736 -0.498 0.0885 S5 0 -0.1422 0.4096 -0.8391 1.3535 -1.5621 1.1838 -0.5146 0.0955 S6 4.6754 -0.0927 0.2136 -0.3628 0.4139 -0.3014 0.0714 0.0601 -0.0365 S7 0 -0.1209 0.1626 -0.5427 1.1077 -1.5662 1.4226 -0.7711 0.1921 S8 0 -0.2042 0.3103 -0.6247 0.8383 -0.7972 0.512 -0.2051 0.0399 S9 -18.968 -0.0716 -0.0174 0.0884 -0.0994 0.0393 0.0033 -0.0076 0.0017 S10 -15.615 -0.0773 -0.0117 0.074 -0.0868 0.0537 -0.0194 0.0038 -0.0003 S11 0 -0.0084 -0.0364 0.0262 -0.0257 0.0153 -0.0048 0.0008 -5E-05 S12 -1.1609 0.1575 -0.1551 0.1106 -0.0597 0.0227 -0.0054 0.0007 -4E-05 S13 -4.7786 -0.1291 -0.0057 0.0509 -0.0242 0.0056 -0.0007 5E-05 -1E-06 S14 -8.9618 -0.1202 0.0579 -0.0202 0.005 -0.0009 0.0001 -7E-06 2E-07

[0272] Ninth Example

[0273] Fig.17 is a view showing a ninth example of the optical imaging system, and Fig.18 Shows Fig.17 Aberration curves of the optical imaging system.

[0274] The optical imaging system 9 includes a first lens 1009 , a second lens 2009 , a third lens 3009 , a fourth lens 4009 , a fifth lens 5009 , a sixth lens 6009 and a seventh lens 7009 .

[0275] The first lens 1009 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2009 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3009 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4009 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5009 has a negative refractive power, a concave object side surface, and a convex image side surface. The sixth lens 6009 has a positive refractive power, a convex object side surface, and a convex image side surface. In addition, at least one inflection point is formed on any one or both of the object side surface and the image side surface of the sixth lens 6009. The seventh lens 7009 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7009.

[0276] The optical imaging system 9 further includes an aperture, a filter 8009, and an image sensor 9009. The aperture is disposed between the first lens 1009 and the second lens 2009 to adjust the amount of light incident on the image sensor 9009. The filter 8009 is disposed between the seventh lens 7009 and the image sensor 9009 to block infrared rays. The image sensor 9009 forms an imaging surface on which an image of an object is formed. Fig.17 Although not shown in the figure, the aperture stop is set at a distance of 0.731 mm from the object side surface of the first lens 1009 in the direction toward the imaging surface of the optical imaging system 9. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 9 listed in Table 59 presented later in this application.

[0277] Table 17 below shows Fig.17 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 18 below. Fig.17 The aspheric coefficient of the lens.

[0278] Table 17

[0279]

[0280] Table 18

[0281]

[0282]

[0283] Example 10

[0284] Fig.19 is a view showing a tenth example of the optical imaging system, and Fig. 20 Shows Fig.19 Aberration curves of the optical imaging system.

[0285] The optical imaging system 10 includes a first lens 1010 , a second lens 2010 , a third lens 3010 , a fourth lens 4010 , a fifth lens 5010 , a sixth lens 6010 and a seventh lens 7010 .

[0286] The first lens 1010 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2010 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3010 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4010 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5010 has a negative refractive power, a concave object side surface, and a convex image side surface. The sixth lens 6010 has a positive refractive power, a convex object side surface, and a convex image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6010. The seventh lens 7010 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, one inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7010.

[0287] The optical imaging system 10 further includes an aperture, a filter 8010, and an image sensor 9010. The aperture is disposed between the first lens 1010 and the second lens 2010 to adjust the amount of light incident on the image sensor 9010. The filter 8010 is disposed between the seventh lens 7010 and the image sensor 9010 to block infrared rays. The image sensor 9010 forms an imaging surface on which an image of an object is formed. Fig.19 Although not shown in the figure, the aperture stop is set at a distance of 0.737 mm from the object side surface of the first lens 1010 in the direction toward the imaging surface of the optical imaging system 10. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 10 listed in Table 59 presented later in this application.

[0288] Table 19 below shows Fig.19 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 20 below. Fig.19 The aspheric coefficient of the lens.

[0289] Table 19

[0290]

[0291] Table 20

[0292]

[0293]

[0294] Example 11

[0295] Fig.21 is a view showing an eleventh example of the optical imaging system, and Fig. 22 Shows Fig.21 Aberration curves of the optical imaging system.

[0296] The optical imaging system 11 includes a first lens 1011 , a second lens 2011 , a third lens 3011 , a fourth lens 4011 , a fifth lens 5011 , a sixth lens 6011 and a seventh lens 7011 .

[0297] The first lens 1011 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2011 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3011 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4011 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5011 has a negative refractive power, a concave object side surface, and a convex image side surface. The sixth lens 6011 has a positive refractive power, a convex object side surface, and a convex image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6011. The seventh lens 7011 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7011.

[0298] The optical imaging system 11 further includes an aperture, a filter 8011, and an image sensor 9011. The aperture is disposed between the first lens 1011 and the second lens 2011 to adjust the amount of light incident on the image sensor 9011. The filter 8011 is disposed between the seventh lens 7011 and the image sensor 9011 to block infrared rays. The image sensor 9011 forms an imaging surface on which an image of an object is formed. Fig.21 Although not shown in the figure, the aperture stop is set at a distance of 0.698 mm from the object side surface of the first lens 1011 in the direction toward the imaging surface of the optical imaging system 11. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 11 listed in Table 59 presented later in this application.

[0299] Table 21 below shows Fig.21 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 22 below. Fig.21 The aspheric coefficient of the lens.

[0300] Table 21

[0301]

[0302] Table 22

[0303] K A B C D E F G H J S1 -0.7517 0.0167 0.0218 -0.0308 0.0122 0.045 -0.0708 0.0409 -0.0088 0 S2 34.832 -0.0755 0.1989 -0.3733 0.5214 -0.513 0.3178 -0.1083 0.0151 0 S3 -2.6402 -0.1515 0.3308 -0.4895 0.5339 -0.4166 0.2235 -0.0704 0.0093 0 S4 -0.5069 -0.0857 0.1535 -0.0035 -0.4469 0.9403 -0.9224 0.4651 -0.0943 0 S5 0 -0.0679 0.0488 -0.1888 0.3474 -0.4437 0.3431 -0.1418 0.0251 0 S6 0 -0.09 -0.0268 0.1418 -0.3475 0.412 -0.3072 0.1379 -0.0272 0 S7 25.097 -0.1247 -0.1915 0.4352 -0.6101 0.6141 -0.4745 0.2289 -0.0464 0 S8 -99 0.011 -0.4269 0.5921 -0.5748 0.4876 -0.2996 0.1034 -0.0143 0 S9 -68.611 0.0834 -0.1663 -0.271 0.6084 -0.449 0.1594 -0.0274 0.0018 0 S10 2.9309 0.2443 -0.5003 0.3866 -0.1596 0.039 -0.0058 0.0005 -2E-05 0 S11 -99 0.1262 -0.2305 0.1843 -0.0988 0.0321 -0.0059 0.0006 -2E-05 0 S12 -3.6172 0.1432 -0.1567 0.0947 -0.0381 0.0102 -0.0017 0.0002 -6E-06 0 S13 -2.5851 -0.0853 -0.0998 0.1236 -0.0546 0.0131 -0.0018 0.0001 -4E-06 0 S14 -1.0626 -0.3198 0.227 -0.1315 0.0571 -0.0175 0.0036 -0.0005 3E-05 -1E-06

[0304] Example 12

[0305] Fig.23is a view showing a twelfth example of the optical imaging system, and Fig.24 Shows Fig.23 Aberration curves of the optical imaging system.

[0306] The optical imaging system 12 includes a first lens 1012 , a second lens 2012 , a third lens 3012 , a fourth lens 4012 , a fifth lens 5012 , a sixth lens 6012 and a seventh lens 7012 .

[0307] The first lens 1012 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2012 has a positive refractive power, a convex object side surface, and a convex image side surface. The third lens 3012 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4012 has a negative refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5012 has a positive refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6012 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6012. The seventh lens 7012 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, two inflection points are formed on the object side surface of the seventh lens 7012, and one inflection point is formed on the image side surface of the seventh lens 7012.

[0308] The optical imaging system 12 further includes an aperture, a filter 8012, and an image sensor 9012. The aperture is disposed between the second lens 2012 and the third lens 3012 to adjust the amount of light incident on the image sensor 9012. The filter 8012 is disposed between the seventh lens 7012 and the image sensor 9012 to block infrared rays. The image sensor 9012 forms an imaging surface on which an image of an object is formed. Fig.23 Although not shown in FIG. 1 , the aperture stop is set at a distance of 1.158 mm from the object side surface of the first lens 1012 in the direction toward the imaging surface of the optical imaging system 12. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 12 listed in Table 59 presented later in this application.

[0309] Table 23 below shows Fig.23 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 24 below. Fig.23 The aspheric coefficient of the lens.

[0310] Table 23

[0311]

[0312]

[0313] Table 24

[0314] K A B C D E F G H J S1 -8.038 0.0707 -0.0797 0.0334 0.0072 -0.0491 0.0465 -0.0186 0.0032 -0.0002 S2 -20.594 -0.0019 -0.1494 0.2041 -0.2922 0.3755 -0.3085 0.1486 -0.0387 0.0042 S3 -0.0908 -0.0339 -0.0641 0.1368 -0.2821 0.4921 -0.4815 0.2605 -0.0746 0.0088 S4 -0.4822 -0.0436 0.1761 -0.3256 0.1999 0.1916 -0.4291 0.3203 -0.1141 0.0162 S5 -1.1841 -0.1073 0.2544 -0.4683 0.4991 -0.2863 0.0565 0.0325 -0.0229 0.0044 S6 0.8733 -0.0693 0.0357 0.2048 -0.8833 1.7328 -1.9742 1.3464 -0.5106 0.083 S7 -0.4999 -0.0314 0.0135 -0.2894 0.9716 -1.7181 1.7923 -1.1152 0.3837 -0.0563 S8 -1E-06 -0.0273 -0.1177 0.212 -0.2544 0.2157 -0.1264 0.0469 -0.0093 0.0007 S9 -41.843 0.1624 -0.3487 0.4016 -0.3105 0.1396 -0.027 -0.0038 0.0026 -0.0003 S10 -5.1424 0.0397 -0.1364 0.1569 -0.1229 0.0633 -0.0212 0.0044 -0.0005 3E-05 S11 -2.1666 0.0356 -0.1809 0.1985 -0.1438 0.0641 -0.0173 0.0028 -0.0002 9E-06 S12 -0.0207 -0.1043 0.0239 -0.0063 -0.0007 0.0007 -3E-06 -4E-05 7E-06 -4E-07 S13 -0.7948 -0.4128 0.1863 -0.0516 0.0101 -0.0015 0.0002 -1E-05 6E-07 -1E-08 S14 -1.3226 -0.3105 0.1713 -0.0712 0.0213 -0.0043 0.0006 -5E-05 2E-06 -5E-08

[0315] Example 13

[0316] Fig.25 is a view showing a thirteenth example of the optical imaging system, and Fig.26 Shows Fig.25 Aberration curves of the optical imaging system.

[0317] The optical imaging system 13 includes a first lens 1013 , a second lens 2013 , a third lens 3013 , a fourth lens 4013 , a fifth lens 5013 , a sixth lens 6013 and a seventh lens 7013 .

[0318] The first lens 1013 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2013 has a positive refractive power, a convex object side surface, and a concave image side surface. The third lens 3013 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4013 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5013 has a negative refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6013 has a positive refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6013. The seventh lens 7013 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, two inflection points are formed on the object side surface of the seventh lens 7013, and one inflection point is formed on the image side surface of the seventh lens 7013.

[0319] The optical imaging system 13 further includes an aperture, a filter 8013, and an image sensor 9013. The aperture is disposed between the second lens 2013 and the third lens 3013 to adjust the amount of light incident on the image sensor 9013. The filter 8013 is disposed between the seventh lens 7013 and the image sensor 9013 to block infrared rays. The image sensor 9013 forms an imaging surface on which an image of an object is formed. Fig.25 Although not shown in FIG. 1 , the aperture stop is set at a distance of 1.077 mm from the object side surface of the first lens 1013 in the direction toward the imaging surface of the optical imaging system 13. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 13 listed in Table 59 presented later in this application.

[0320] Table 25 below shows Fig.25 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 26 below. Fig.25The aspheric coefficient of the lens.

[0321] Table 25

[0322]

[0323]

[0324] Table 26

[0325] K A B C D E F G H J S1 -1 -0.0103 0.0078 -0.0588 0.0925 -0.0904 0.0486 -0.0119 0.0004 0.0002 S2 -13.05 0.0258 -0.1274 0.035 0.0617 -0.0405 0.0003 0.0049 -0.0007 -0.0001 S3 -1.2154 -0.0166 -0.0602 -0.0171 0.0625 0.0481 -0.1007 0.0511 -0.0092 0.0002 S4 -7.0515 -0.047 0.2681 -0.8387 1.4546 -1.5426 1.0264 -0.4201 0.0974 -0.0099 S5 8.8287 -0.0982 0.3106 -0.8268 1.4538 -1.7174 1.3464 -0.6715 0.1944 -0.025 S6 1.7217 -0.0695 0.0939 -0.1196 0.1421 -0.2108 0.2773 -0.2257 0.0997 -0.0182 S7 -1.4309 -0.0448 -0.0056 0.0299 -0.0484 -0.0039 0.0856 -0.1013 0.0511 -0.0095 S8 5.8592 -0.0455 -0.0133 0.0337 -0.0729 0.0922 -0.0766 0.0411 -0.0128 0.0018 S9 -43.521 0.0008 -0.0239 0.0222 -0.0173 0.0051 -0.0002 -0.0003 5E-05 5E-06 S10 -11.855 -0.0163 -0.0578 0.0832 -0.067 0.0334 -0.0109 0.0023 -0.0003 1E-05 S11 -16.199 0.1024 -0.1959 0.1931 -0.1564 0.0797 -0.0243 0.0044 -0.0004 2E-05 S12 0.1668 -0.0913 0.11 -0.1075 0.0537 -0.0157 0.0029 -0.0003 2E-05 -6E-07 S13 -0.8022 -0.4375 0.2118 -0.049 0.0016 0.0021 -0.0006 7E-05 -4E-06 1E-07 S14 -1.407 -0.3709 0.2499 -0.1268 0.0461 -0.0114 0.0018 -0.0002 1E-05 -3E-07

[0326] Example 14

[0327] Fig. 27 is a view showing a fourteenth example of the optical imaging system, and Fig.28 Shows Fig. 27 Aberration curves of the optical imaging system.

[0328] The optical imaging system 14 includes a first lens 1014 , a second lens 2014 , a third lens 3014 , a fourth lens 4014 , a fifth lens 5014 , a sixth lens 6014 and a seventh lens 7014 .

[0329] The first lens 1014 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2014 has a positive refractive power, a convex object side surface, and a concave image side surface. The third lens 3014 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4014 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5014 has a positive refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6014 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6014. The seventh lens 7014 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, two inflection points are formed on the object side surface of the seventh lens 7014, and one inflection point is formed on the image side surface of the seventh lens 7014.

[0330] The optical imaging system 14 further includes an aperture, a filter 8014, and an image sensor 9014. The aperture is disposed between the second lens 2014 and the third lens 3014 to adjust the amount of light incident on the image sensor 9014. The filter 8014 is disposed between the seventh lens 7014 and the image sensor 9014 to block infrared rays. The image sensor 9014 forms an imaging surface on which an image of an object is formed. Fig. 27Although not shown in FIG. 1 , the aperture stop is set at a distance of 1.230 mm from the object side surface of the first lens 1014 in the direction toward the imaging surface of the optical imaging system 14. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 14 listed in Table 59 presented later in this application.

[0331] Table 27 below shows Fig. 27 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 28 below. Fig. 27 The aspheric coefficient of the lens.

[0332] Table 27

[0333]

[0334] Table 28

[0335] K A B C D E F G H J S1 -1 -0.0092 0.003 -0.0414 0.0636 -0.0562 0.026 -0.0049 -0.0002 0.0001 S2 -11.557 0.0601 -0.1844 0.2568 -0.3524 0.3604 -0.23 0.0871 -0.018 0.0016 S3 -0.8307 -0.0024 -0.0852 0.1656 -0.3174 0.3977 -0.2764 0.1063 -0.0212 0.0016 S4 33.131 -0.027 0.1754 -0.4193 0.3931 -0.0382 -0.2294 0.1977 -0.0691 0.0091 S5 14.848 -0.09 0.2473 -0.422 0.2881 0.1413 -0.4099 0.3093 -0.1063 0.0142 S6 2.0645 -0.0757 0.0883 0.0177 -0.3102 0.6013 -0.6108 0.357 -0.1119 0.0146 S7 -10.536 -0.0399 -0.0508 0.2144 -0.4431 0.5288 -0.3825 0.1604 -0.034 0.0025 S8 1.3378 -0.0489 -0.0512 0.1032 -0.1013 0.0149 0.0599 -0.0576 0.0222 -0.0032 S9 -44.096 0.0784 -0.1355 0.1317 -0.0913 0.0374 -0.0091 0.001 4E-05 -1E-05 S10 -6.651 0.049 -0.1189 0.1277 -0.0852 0.0342 -0.0083 0.0012 -1E-04 3E-06 S11 -13.816 0.0584 -0.1268 0.1161 -0.0837 0.0379 -0.0102 0.0016 -0.0001 5E-06 S12 1.0596 -0.0574 0.0273 -0.0248 0.0087 -0.0016 0.0002 -9E-06 2E-07 -5E-10 S13 -0.8717 -0.4042 0.1652 -0.0262 -0.0057 0.0037 -0.0008 9E-05 -6E-06 1E-07 S14 -1.3714 -0.3652 0.2385 -0.1205 0.0439 -0.0107 0.0017 -0.0002 9E-06 -2E-07

[0336] Example 15

[0337] Fig.29 is a view showing a fifteenth example of the optical imaging system, and Fig.30 Shows Fig.29 Aberration curves of the optical imaging system.

[0338] The optical imaging system 15 includes a first lens 1015 , a second lens 2015 , a third lens 3015 , a fourth lens 4015 , a fifth lens 5015 , a sixth lens 6015 and a seventh lens 7015 .

[0339] The first lens 1015 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2015 has a positive refractive power, a convex object side surface, and a concave image side surface. The third lens 3015 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4015 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5015 has a positive refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6015 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6015. The seventh lens 7015 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, two inflection points are formed on the object side surface of the seventh lens 7015, and one inflection point is formed on the image side surface of the seventh lens 7015.

[0340] The optical imaging system 15 further includes an aperture, a filter 8015, and an image sensor 9015. The aperture is disposed between the second lens 2015 and the third lens 3015 to adjust the amount of light incident on the image sensor 9015. The filter 8015 is disposed between the seventh lens 7015 and the image sensor 9015 to block infrared rays. The image sensor 9015 forms an imaging surface on which an image of an object is formed. Fig.29 Although not shown in FIG. 1 , the aperture stop is set at a distance of 1.272 mm from the object side surface of the first lens 1015 in the direction toward the imaging surface of the optical imaging system 15. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 15 listed in Table 59 presented later in this application.

[0341] Table 29 below shows Fig.29 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 30 below. Fig.29 The aspheric coefficient of the lens.

[0342] Table 29

[0343]

[0344] Table 30

[0345]

[0346]

[0347] Example 16

[0348] Fig.31 is a view showing a sixteenth example of the optical imaging system, and Fig.32 Shows Fig.31 Aberration curves of the optical imaging system.

[0349] The optical imaging system 16 includes a first lens 1016 , a second lens 2016 , a third lens 3016 , a fourth lens 4016 , a fifth lens 5016 , a sixth lens 6016 and a seventh lens 7016 .

[0350] The first lens 1016 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2016 has a negative refractive power, a concave object side surface, and a concave image side surface. The third lens 3016 has a positive refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4016 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5016 has a negative refractive power, a concave object side surface, and a convex image side surface. The sixth lens 6016 has a positive refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6016. The seventh lens 7016 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, two inflection points are formed on the object side surface of the seventh lens 7016, and one inflection point is formed on the image side surface of the seventh lens 7016.

[0351] The optical imaging system 16 further includes an aperture, a filter 8016, and an image sensor 9016. The aperture is disposed between the second lens 2016 and the third lens 3016 to adjust the amount of light incident on the image sensor 9016. The filter 8016 is disposed between the seventh lens 7016 and the image sensor 9016 to block infrared rays. The image sensor 9016 forms an imaging surface on which an image of an object is formed. Fig.31 Although not shown in FIG. 1 , the aperture stop is set at a distance of 0.937 mm from the object side surface of the first lens 1016 in the direction toward the imaging surface of the optical imaging system 16. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 16 listed in Table 59 presented later in this application.

[0352] Table 31 below shows Fig.31 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 32 below. Fig.31 The aspheric coefficient of the lens.

[0353] Table 31

[0354]

[0355] Table 32

[0356]

[0357]

[0358] Example 17

[0359] Fig.33 is a view showing a seventeenth example of the optical imaging system, and Fig.34 Shows Fig.33 Aberration curves of the optical imaging system.

[0360] The optical imaging system 17 includes a first lens 1017 , a second lens 2017 , a third lens 3017 , a fourth lens 4017 , a fifth lens 5017 , a sixth lens 6017 and a seventh lens 7017 .

[0361] The first lens 1017 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2017 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3017 has a positive refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4017 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5017 has a negative refractive power, a concave object side surface, and a convex image side surface. The sixth lens 6017 has a positive refractive power, a convex object side surface, and a convex image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6017. The seventh lens 7017 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7017.

[0362] The optical imaging system 17 further includes an aperture, a filter 8017, and an image sensor 9017. The aperture is disposed between the first lens 1017 and the second lens 2017 to adjust the amount of light incident on the image sensor 9017. The filter 8017 is disposed between the seventh lens 7017 and the image sensor 9017 to block infrared rays. The image sensor 9017 forms an imaging surface on which an image of an object is formed. Fig.33 Although not shown in the figure, the aperture stop is set at a distance of 0.683 mm from the object side surface of the first lens 1017 in the direction toward the imaging surface of the optical imaging system 17. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 17 listed in Table 59 presented later in this application.

[0363] Table 33 below shows Fig.33 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 34 below. Fig.33 The aspheric coefficient of the lens.

[0364] Table 33

[0365]

[0366]

[0367] Table 34

[0368] K A B C D E F G H J S1 -0.804 0.0156 0.0271 -0.0389 0.0148 0.0472 -0.0717 0.0398 -0.0082 0 S2 8.8405 -0.0655 0.0311 0.1425 -0.424 0.5691 -0.4286 0.1738 -0.0297 0 S3 -12.163 -0.141 0.214 -0.1913 0.1405 -0.0962 0.0577 -0.0201 0.0025 0 S4 -0.4248 -0.0825 0.07 0.3355 -1.1524 1.8742 -1.6953 0.823 -0.1654 0 S5 0 -0.0664 0.0699 -0.2385 0.3963 -0.4248 0.2636 -0.0832 0.0101 0 S6 0 -0.0849 0.0295 -0.0243 -0.1324 0.2622 -0.2505 0.1282 -0.0271 0 S7 47.712 -0.1968 0.1845 -0.4516 0.7265 -0.7784 0.4942 -0.1584 0.0188 0 S8 85.667 -0.1837 0.2201 -0.4192 0.411 -0.1856 0.0288 0.0034 -0.001 0 S9 -99 -0.2337 0.709 -1.2742 1.1966 -0.6217 0.1784 -0.0262 0.0015 0 S10 0.797 0.0272 0.0522 -0.2244 0.1994 -0.0797 0.0164 -0.0017 7E-05 0 S11 -98.299 0.163 -0.2325 0.1653 -0.0832 0.026 -0.0046 0.0004 -2E-05 0 S12 -4.1083 0.2226 -0.2311 0.1457 -0.0646 0.0193 -0.0035 0.0004 -1E-05 0 S13 -0.7417 -0.0584 -0.1316 0.1263 -0.0468 0.0093 -0.001 6E-05 -2E-06 0 S14 -1.2275 -0.2296 0.1081 -0.0388 0.0105 -0.002 0.0003 -2E-05 8E-07 -1E-08

[0369] Example 18

[0370] Fig.35 is a view showing an eighteenth example of the optical imaging system, and Fig.36 Shows Fig.35 Aberration curves of the optical imaging system.

[0371] The optical imaging system 18 includes a first lens 1018 , a second lens 2018 , a third lens 3018 , a fourth lens 4018 , a fifth lens 5018 , a sixth lens 6018 and a seventh lens 7018 .

[0372] The first lens 1018 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2018 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3018 has a positive refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4018 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5018 has a negative refractive power, a concave object side surface, and a convex image side surface. The sixth lens 6018 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6018. The seventh lens 7018 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7018.

[0373] The optical imaging system 18 further includes an aperture, a filter 8018, and an image sensor 9018. The aperture is disposed before the first lens 1018 to adjust the amount of light incident on the image sensor 9018. The filter 8018 is disposed between the seventh lens 7018 and the image sensor 9018 to block infrared rays. The image sensor 9018 forms an imaging surface on which an image of an object is formed. Fig.35 Although not shown in the figure, the aperture stop is set at a distance of 0.250 mm from the object side surface of the first lens 1018 in the direction toward the imaging surface of the optical imaging system 18. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 18 listed in Table 59 presented later in this application.

[0374] Table 35 below shows Fig.35 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 36 below. Fig.35 The aspheric coefficient of the lens.

[0375] Table 35

[0376]

[0377]

[0378] Table 36

[0379] 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

[0380] Example 19

[0381] Fig.37 is a view showing a nineteenth example of the optical imaging system, and Fig.38 Shows Fig.37 Aberration curves of the optical imaging system.

[0382] The optical imaging system 19 includes a first lens 1019 , a second lens 2019 , a third lens 3019 , a fourth lens 4019 , a fifth lens 5019 , a sixth lens 6019 and a seventh lens 7019 .

[0383] The first lens 1019 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2019 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3019 has a positive refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4019 has a positive refractive power, a convex object side surface, and a convex image side surface. The fifth lens 5019 has a negative refractive power, a concave object side surface, and a convex image side surface. The sixth lens 6019 has a positive refractive power, a convex object side surface, and a convex image side surface. In addition, at least one inflection point is formed on any one or both of the object side surface and the image side surface of the sixth lens 6019. The seventh lens 7019 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7019.

[0384] The optical imaging system 19 further includes an aperture, a filter 8019, and an image sensor 9019. The aperture is disposed between the first lens 1019 and the second lens 2019 to adjust the amount of light incident on the image sensor 9019. The filter 8019 is disposed between the seventh lens 7019 and the image sensor 9019 to block infrared rays. The image sensor 9019 forms an imaging surface on which an image of an object is formed.

[0385] Table 37 below shows Fig.37 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 38 below. Fig.37 The aspheric coefficient of the lens.

[0386] Table 37

[0387]

[0388] Table 38

[0389] 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

[0390] Example 20

[0391] Fig.39 is a view showing a twentieth example of the optical imaging system, and Fig.40 Shows Fig.39 Aberration curves of the optical imaging system.

[0392] The optical imaging system 20 includes a first lens 1020 , a second lens 2020 , a third lens 3020 , a fourth lens 4020 , a fifth lens 5020 , a sixth lens 6020 and a seventh lens 7020 .

[0393] The first lens 1020 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2020 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3020 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4020 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5020 has a positive refractive power, a concave object side surface, and a convex image side surface. The sixth lens 6020 has a positive refractive power, a convex object side surface, and a convex image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6020. The seventh lens 7020 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, an inflection point is formed on the image side surface of the seventh lens 7020.

[0394] The optical imaging system 20 further includes an aperture, a filter 8020, and an image sensor 9020. The aperture is disposed between the first lens 1020 and the second lens 2020 to adjust the amount of light incident on the image sensor 9020. The filter 8020 is disposed between the seventh lens 7020 and the image sensor 9020 to block infrared rays. The image sensor 9020 forms an imaging surface on which an image of an object is formed. Fig.39 Although not shown in the figure, the aperture stop is set at a distance of 0.641 mm from the object side surface of the first lens 1020 in the direction toward the imaging surface of the optical imaging system 20. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 20 listed in Table 59 presented later in this application.

[0395] Table 39 below shows Fig.39 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 40 below. Fig.39 The aspheric coefficient of the lens.

[0396] Table 39

[0397]

[0398] Table 40

[0399]

[0400]

[0401] Example 21

[0402] Fig.41 is a view showing a twenty-first example of the optical imaging system, and Fig.42 Shows Fig.41 Aberration curves of the optical imaging system.

[0403] The optical imaging system 21 includes a first lens 1021 , a second lens 2021 , a third lens 3021 , a fourth lens 4021 , a fifth lens 5021 , a sixth lens 6021 and a seventh lens 7021 .

[0404] The first lens 1021 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2021 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3021 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4021 has a positive refractive power, a convex object side surface, and a convex image side surface. The fifth lens 5021 has a negative refractive power, a concave object side surface, and a convex image side surface. The sixth lens 6021 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6021. The seventh lens 7021 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7021.

[0405] The optical imaging system 21 further includes an aperture, a filter 8021, and an image sensor 9021. The aperture is disposed between the second lens 2021 and the third lens 3021 to adjust the amount of light incident on the image sensor 9021. The filter 8021 is disposed between the seventh lens 7021 and the image sensor 9021 to block infrared rays. The image sensor 9021 forms an imaging surface on which an image of an object is formed. Fig.41 Although not shown in the figure, the aperture stop is set at a distance of 0.920 mm from the object side surface of the first lens 1021 in the direction toward the imaging surface of the optical imaging system 21. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 21 listed in Table 59 presented later in this application.

[0406] Table 41 below shows Fig.41 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 42 below. Fig.41 The aspheric coefficient of the lens.

[0407] Table 41

[0408]

[0409] Table 42

[0410]

[0411]

[0412] Example 22

[0413] Fig.43 is a view showing a twenty-second example of the optical imaging system, and Fig.44 Shows Fig.43 Aberration curves of the optical imaging system.

[0414] The optical imaging system 22 includes a first lens 1022 , a second lens 2022 , a third lens 3022 , a fourth lens 4022 , a fifth lens 5022 , a sixth lens 6022 and a seventh lens 7022 .

[0415] The first lens 1022 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2022 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3022 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4022 has a positive refractive power, a convex object side surface, and a convex image side surface. The fifth lens 5022 has a negative refractive power, a concave object side surface, and a convex image side surface. The sixth lens 6022 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6022. The seventh lens 7022 has a negative refractive power, a convex object side surface, and a concave image side surface. In addition, two inflection points are formed on the object side surface of the seventh lens 7022, and one inflection point is formed on the image side surface of the seventh lens 7022.

[0416] The optical imaging system 22 further includes an aperture, a filter 8022, and an image sensor 9022. The aperture is disposed between the second lens 2022 and the third lens 3022 to adjust the amount of light incident on the image sensor 9022. The filter 8022 is disposed between the seventh lens 7022 and the image sensor 9022 to block infrared rays. The image sensor 9022 forms an imaging surface on which an image of an object is formed. Fig.43Although not shown in the figure, the aperture stop is set at a distance of 0.901 mm from the object side surface of the first lens 1022 in the direction toward the imaging surface of the optical imaging system 22. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 22 listed in Table 59 presented later in this application.

[0417] Table 43 below shows Fig.43 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 44 below. Fig.43 The aspheric coefficient of the lens.

[0418] Table 43

[0419]

[0420]

[0421] Table 44

[0422] K A B C D E F G H J S1 -0.0815 0.0055 0.0014 -0.0029 0.0061 -0.0051 0.002 -0.0003 0 0 S2 25.622 -0.0509 0.133 -0.2101 0.1935 -0.1078 0.0334 -0.0045 0 0 S3 -1.7225 -0.0688 0.1585 -0.2156 0.1892 -0.1009 0.0303 -0.004 0 0 S4 0.011 -0.0397 0.0365 0.0313 -0.0936 0.1109 -0.0595 0.0137 0 0 S5 0.49 -0.0743 0.0501 -0.0466 0.0606 -0.0386 0.013 -0.0015 0 0 S6 7.0482 -0.0885 0.0384 -0.0259 0.0308 -0.0159 0.0036 -0.0003 0 0 S7 21.918 -0.0229 0.0042 -0.0033 0.0044 -0.0002 -0.0006 0.0001 0 0 S8 25.736 -0.0244 0.007 -0.0107 0.0065 -0.0016 0.0002 -7E-06 0 0 S9 1.6857 -0.0527 0.078 -0.0871 0.0455 -0.0137 0.0025 -0.0002 0 0 S10 76.281 -0.0552 0.0643 -0.0583 0.0243 -0.005 0.0005 -2E-05 0 0 S11 -52.836 0.0115 -0.0347 0.0203 -0.0087 0.0021 -0.0002 1E-05 0 0 S12 0 -0.0339 -0.0007 0.0021 -0.0008 8E-05 1E-05 -4E-06 3E-07 -9E-09 S13 -0.9427 -0.1816 0.0377 -0.0008 -0.001 0.0002 -2E-05 9E-07 -2E-08 0 S14 -1.0048 -0.1579 0.0494 -0.0121 0.0022 -0.0003 2E-05 -8E-07 1E-08 0

[0423] Example 23

[0424] Fig.45 is a view showing a twenty-third example of the optical imaging system, and Fig.46 Shows Fig.45 Aberration curves of the optical imaging system.

[0425] The optical imaging system 23 includes a first lens 1023 , a second lens 2023 , a third lens 3023 , a fourth lens 4023 , a fifth lens 5023 , a sixth lens 6023 and a seventh lens 7023 .

[0426] The first lens 1023 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2023 has a positive refractive power, a convex object side surface, and a concave image side surface. The third lens 3023 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4023 has a negative refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5023 has a positive refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6023 has a positive refractive power, a convex object side surface, and a convex image side surface. In addition, at least one inflection point is formed on any one or both of the object side surface and the image side surface of the sixth lens 6023. The seventh lens 7023 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7023.

[0427] The optical imaging system 23 further includes an aperture, a filter 8023, and an image sensor 9023. The aperture is disposed between the second lens 2023 and the third lens 3023 to adjust the amount of light incident on the image sensor 9023. The filter 8023 is disposed between the seventh lens 7023 and the image sensor 9023 to block infrared rays. The image sensor 9023 forms an imaging surface on which an image of an object is formed. Fig.45 Although not shown in the figure, the aperture stop is set at a distance of 1.051 mm from the object side surface of the first lens 1023 in the direction toward the imaging surface of the optical imaging system 23. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 23 listed in Table 59 presented later in this application.

[0428] Table 45 below shows Fig.45 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 46 below. Fig.45 The aspheric coefficient of the lens.

[0429] Table 45

[0430]

[0431]

[0432] Table 46

[0433] K A B C D E F G H S1 -1.7971 0.02 0.0153 -0.0575 0.0794 -0.0689 0.0296 -0.0048 0 S2 0 -0.0249 -0.1102 0.1727 -0.1632 0.1101 -0.0441 0.0076 0 S3 0 0.0215 -0.1293 0.2068 -0.2278 0.2 -0.1022 0.0204 0 S4 72.117 -0.0714 0.2664 -0.6184 0.7522 -0.5313 0.203 -0.0324 0 S5 -15.337 -0.2046 0.4728 -0.8108 0.9542 -0.6926 0.2852 -0.0496 0 S6 -5.3786 -0.102 0.2031 -0.1151 -0.1096 0.3352 -0.285 0.0916 0 S7 0 -0.0443 -0.0061 -0.1088 0.0952 -0.0067 -0.0694 0.0382 0 S8 0 -0.1919 0.079 0.0071 -0.1552 0.1775 -0.0954 0.0212 0 S9 -54.709 -0.2046 -0.0908 0.3474 -0.3213 0.1526 -0.0388 0.0033 0 S10 0 -0.1486 -0.156 0.3054 -0.2298 0.1087 -0.0342 0.0052 0 S11 0 0.0817 -0.1186 -0.0496 0.1291 -0.0835 0.0241 -0.0026 0 S12 -1.7559 0.2122 -0.171 0.0184 0.0388 -0.0196 0.0037 -0.0003 0 S13 -4.6993 0.0063 -0.2121 0.1837 -0.071 0.0154 -0.0019 0.0001 -4E-06 S14 -1.1263 -0.2142 0.0916 -0.0298 0.0072 -0.0012 0.0001 -9E-06 3E-07

[0434] Example 24

[0435] Fig.47 is a view showing a twenty-fourth example of the optical imaging system, and Fig.48 Shows Fig.47 Aberration curves of the optical imaging system.

[0436] The optical imaging system 24 includes a first lens 1024 , a second lens 2024 , a third lens 3024 , a fourth lens 4024 , a fifth lens 5024 , a sixth lens 6024 and a seventh lens 7024 .

[0437] The first lens 1024 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2024 has a positive refractive power, a convex object side surface, and a concave image side surface. The third lens 3024 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4024 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5024 has a negative refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6024 has a positive refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on the object side surface and the image side surface of the sixth lens 6024. The seventh lens 7024 has a positive refractive power, a convex object side surface, and a concave image side surface. In addition, two inflection points are formed on the object side surface of the seventh lens 7024, and one inflection point is formed on the image side surface of the seventh lens 7024.

[0438] The optical imaging system 24 further includes an aperture, a filter 8024, and an image sensor 9024. The aperture is disposed between the second lens 2024 and the third lens 3024 to adjust the amount of light incident on the image sensor 9024. The filter 8024 is disposed between the seventh lens 7024 and the image sensor 9024 to block infrared rays. The image sensor 9024 forms an imaging surface on which an image of an object is formed. Fig.47 Although not shown in the figure, the aperture stop is set at a distance of 1.128 mm from the object side surface of the first lens 1024 in the direction toward the imaging surface of the optical imaging system 24. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 24 listed in Table 59 presented later in this application.

[0439] Table 47 below shows Fig.47 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 48 below. Fig.47 The aspheric coefficient of the lens.

[0440] Table 47

[0441]

[0442]

[0443] Table 48

[0444] K A B C D E F G H J S1 -0.9855 -0.0214 0.0439 -0.0925 0.0633 0.0064 -0.0479 0.0372 -0.0126 0.0016 S2 -12.849 0.0234 -0.0441 -0.1546 -0.0352 0.7096 -1.0004 0.6322 -0.1959 0.0242 S3 -1.1002 -0.0276 0.0854 -0.4269 0.4011 0.3152 -0.8128 0.5995 -0.2021 0.0266 S4 -7.367 -0.1684 1.4677 -5.7804 12.64 -16.742 13.734 -6.8183 1.8769 -0.22 S5 9.3187 -0.2245 1.5162 -5.8569 13.059 -17.823 15.121 -7.7778 2.2231 -0.2714 S6 1.6265 -0.0856 0.2704 -0.9806 2.415 -3.7649 3.6777 -2.1905 0.7327 -0.1058 S7 -4.7815 0.0264 -0.5178 1.9131 -4.2532 5.8667 -5.0521 2.6239 -0.7455 0.0886 S8 5.8592 -0.0338 -0.0317 0.0097 0.0291 -0.0644 0.0612 -0.0311 0.0084 -0.0008 S9 -43.521 -0.002 -0.0021 0.0436 -0.1236 0.1389 -0.0871 0.0311 -0.0059 0.0005 S10 -12.729 -0.0608 0.0286 0.0052 -0.0244 0.0182 -0.0074 0.0018 -0.0002 1E-05 S11 -16.199 0.1227 -0.2762 0.2845 -0.2154 0.1043 -0.0311 0.0056 -0.0006 2E-05 S12 0.0242 -0.0902 0.058 -0.0568 0.029 -0.0088 0.0017 -0.0002 2E-05 -5E-07 S13 -0.8394 -0.4114 0.2062 -0.0647 0.0137 -0.0021 0.0003 -2E-05 2E-06 -5E-08 S14 -1.3743 -0.2983 0.1734 -0.0777 0.0258 -0.006 0.0009 -9E-05 5E-06 -1E-07

[0445] Example 25

[0446] Fig.49 is a view showing a twenty-fifth example of the optical imaging system, and Fig.50 Shows Fig.49 Aberration curves of the optical imaging system.

[0447] The optical imaging system 25 includes a first lens 1025 , a second lens 2025 , a third lens 3025 , a fourth lens 4025 , a fifth lens 5025 , a sixth lens 6025 and a seventh lens 7025 .

[0448] The first lens 1025 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2025 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3025 has a negative refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4025 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5025 has a negative refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6025 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6025. The seventh lens 7025 has a positive refractive power, a convex object side surface, and a concave image side surface. In addition, an inflection point is formed on each of the object side surface and the image side surface of the seventh lens 7025.

[0449] The optical imaging system 25 further includes an aperture, a filter 8025, and an image sensor 9025. The aperture is disposed between the second lens 2025 and the third lens 3025 to adjust the amount of light incident on the image sensor 9025. The filter 8025 is disposed between the seventh lens 7025 and the image sensor 9025 to block infrared rays. The image sensor 9025 forms an imaging surface on which an image of an object is formed. Fig.49 Although not shown in the figure, the aperture stop is set at a distance of 0.963 mm from the object side surface of the first lens 1025 in the direction toward the imaging surface of the optical imaging system 25. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 25 listed in Table 59 presented later in this application.

[0450] Table 49 below shows Fig.49 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 50 below. Fig.49 The aspheric coefficient of the lens.

[0451] Table 49

[0452]

[0453] Table 50

[0454]

[0455]

[0456] Example 26

[0457] Fig.51 is a view showing a twenty-sixth example of the optical imaging system, and Fig.52 Shows Fig.51 Aberration curves of the optical imaging system.

[0458] The optical imaging system 26 includes a first lens 1026 , a second lens 2026 , a third lens 3026 , a fourth lens 4026 , a fifth lens 5026 , a sixth lens 6026 and a seventh lens 7026 .

[0459] The first lens 1026 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2026 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3026 has a positive refractive power, a convex object side surface, and a concave image side surface. The fourth lens 4026 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5026 has a positive refractive power, a concave object side surface, and a convex image side surface. The sixth lens 6026 has a positive refractive power, a concave object side surface, and a convex image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6026. The seventh lens 7026 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, an inflection point is formed on the image side surface of the seventh lens 7026.

[0460] The optical imaging system 26 further includes an aperture, a filter 8026, and an image sensor 9026. The aperture is disposed between the first lens 1026 and the second lens 2026 to adjust the amount of light incident on the image sensor 9026. The filter 8026 is disposed between the seventh lens 7026 and the image sensor 9026 to block infrared rays. The image sensor 9026 forms an imaging surface on which an image of an object is formed. Fig.51 Although not shown in FIG. 1 , the aperture stop is set at a distance of 0.857 mm from the object side surface of the first lens 1026 in the direction toward the imaging surface of the optical imaging system 26. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 26 listed in Table 59 presented later in this application.

[0461] Table 51 below shows Fig.51 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 52 below. Fig.51 The aspheric coefficient of the lens.

[0462] Table 51

[0463]

[0464] Table 52

[0465]

[0466]

[0467] Example 27

[0468] Fig.53 is a view showing a twenty-seventh example of the optical imaging system, and Fig.54 Shows Fig.53 Aberration curves of the optical imaging system.

[0469] The optical imaging system 27 includes a first lens 1027 , a second lens 2027 , a third lens 3027 , a fourth lens 4027 , a fifth lens 5027 , a sixth lens 6027 and a seventh lens 7027 .

[0470] The first lens 1027 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2027 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3027 has a positive refractive power, a concave object side surface, and a convex image side surface. The fourth lens 4027 has a negative refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5027 has a positive refractive power, a concave object side surface, and a convex image side surface. The sixth lens 6027 has a positive refractive power, a concave object side surface, and a convex image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6027. The seventh lens 7027 has a negative refractive power, a concave object side surface, and a concave image side surface. In addition, an inflection point is formed on the image side surface of the seventh lens 7027.

[0471] The optical imaging system 27 further includes an aperture, a filter 8027, and an image sensor 9027. The aperture is disposed between the second lens 2027 and the third lens 3027 to adjust the amount of light incident on the image sensor 9027. The filter 8027 is disposed between the seventh lens 7027 and the image sensor 9027 to block infrared rays. The image sensor 9027 forms an imaging surface on which an image of an object is formed. Fig.53 Although not shown in the figure, the aperture stop is set at a distance of 0.872 mm from the object side surface of the first lens 1027 in the direction toward the imaging surface of the optical imaging system 27. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 27 listed in Table 59 presented later in this application.

[0472] Table 53 below shows Fig.53 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 54 below. Fig.53 The aspheric coefficient of the lens.

[0473] Table 53

[0474]

[0475]

[0476] Table 54

[0477] K A B C D E F G H J S1 -1.0054 0.0225 0.0222 -0.0696 0.1604 -0.2238 0.1806 -0.079105 0.0141246 0 S2 -1.5097 -0.1275 0.3975 -0.6982 0.6801 -0.322 0.0288 0.029035 -0.007638 0 S3 6.0294 -0.163 0.4504 -0.8514 1.0525 -0.8203 0.4235 -0.137998 0.0212967 0 S4 -0.8846 -0.0449 0.0393 0.1574 -0.6934 1.3171 -1.3069 0.6799499 -0.143027 0 S5 0 -0.0513 -0.0193 -0.016 0.0043 0.0034 -0.0155 0.0319206 -0.012784 0 S6 0 -0.1089 -0.0569 0.3576 -0.9255 1.1947 -0.8604 0.3322147 -0.054677 0 S7 -7.5 -0.2139 -0.0107 0.1788 -0.1827 -0.1159 0.3046 -0.189687 0.0404863 0 S8 -43.341 -0.1402 -0.061 0.2777 -0.4123 0.3523 -0.1857 0.0564073 -0.007106 0 S9 -35.081 -0.0602 0.0736 -0.1046 0.1084 -0.0726 0.0255 -0.004103 0.0002198 0 S10 -1.5734 0.1621 -0.2197 0.1896 -0.107 0.0396 -0.0091 0.0011297 -5.79E-05 0 S11 0.5153 0.2137 -0.3167 0.2399 -0.1217 0.0384 -0.0069 0.0006554 -2.5E-05 0 S12 -1.1466 0.1967 -0.2565 0.1542 -0.0532 0.0115 -0.0015 0.0001175 -3.88E-06 0 S13 -0.9056 -0.0077 -0.2094 0.1883 -0.0749 0.0167 -0.0022 0.000155 -4.7E-06 0 S14 -1.2797 -0.2192 0.1006 -0.0338 0.0088 -0.0018 0.0003 -2.44E-05 1.336E-06 -3.17E-08

[0478] Example 28

[0479] Fig.55 is a view showing a twenty-eighth example of the optical imaging system, and Fig.56 Shows Fig.55 Aberration curves of the optical imaging system.

[0480] The optical imaging system 28 includes a first lens 1028 , a second lens 2028 , a third lens 3028 , a fourth lens 4028 , a fifth lens 5028 , a sixth lens 6028 and a seventh lens 7028 .

[0481] The first lens 1028 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2028 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3028 has a positive refractive power, a concave object side surface, and a convex image side surface. The fourth lens 4028 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5028 has a negative refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6028 has a positive refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6028. The seventh lens 7028 has a positive refractive power, a convex object side surface, and a concave image side surface. In addition, two inflection points are formed on the object side surface of the seventh lens 7028, and one inflection point is formed on the image side surface of the seventh lens 7028.

[0482] The optical imaging system 28 further includes an aperture, a filter 8028, and an image sensor 9028. The aperture is disposed between the second lens 2028 and the third lens 3028 to adjust the amount of light incident on the image sensor 9028. The filter 8028 is disposed between the seventh lens 7028 and the image sensor 9028 to block infrared rays. The image sensor 9028 forms an imaging surface on which an image of an object is formed. Fig.55Although not shown in FIG. 1 , the aperture stop is set at a distance of 0.866 mm from the object side surface of the first lens 1028 in the direction toward the imaging surface of the optical imaging system 28. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 28 listed in Table 59 presented later in this application.

[0483] Table 55 below shows Fig.55 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 56 below. Fig.55 The aspheric coefficient of the lens.

[0484] Table 55

[0485]

[0486]

[0487] Table 56

[0488] K A B C D E F G H J S1 -0.1525 0.0035 0.0054 -0.0238 0.0587 -0.0925 0.0808 -0.0376 0.0069 0 S2 -36.188 -0.0554 0.191 -0.4954 0.9092 -1.1194 0.849 -0.3546 0.0617 0 S3 -0.1164 -0.0883 0.2264 -0.5273 0.9947 -1.274 1.0104 -0.4343 0.076 0 S4 0.3326 -0.0462 0.097 -0.2316 0.5455 -0.848 0.7854 -0.3759 0.0708 0 S5 51.758 -0.0119 -0.0911 0.3617 -0.9067 1.3845 -1.3014 0.6835 -0.1493 0 S6 42.164 0.0924 -0.5269 1.3558 -2.2584 2.5093 -1.8107 0.7611 -0.139 0 S7 -4.7579 0.1336 -0.5938 1.261 -1.8115 1.7924 -1.1666 0.4427 -0.0728 0 S8 -3.4393 0.0471 -0.1842 0.2886 -0.3575 0.3273 -0.1971 0.067 -0.0093 0 S9 -8.5449 -0.0502 -0.0588 0.1599 -0.2027 0.1398 -0.0542 0.0105 -0.0007 0 S10 -18.064 -0.044 -0.0734 0.1425 -0.1303 0.0691 -0.0217 0.0038 -0.0003 0 S11 -4.6497 0.0633 -0.1193 0.0882 -0.0426 0.0135 -0.0028 0.0004 -2E-05 0 S12 -50 0.034 -0.0497 0.0246 -0.0072 0.0013 -0.0001 7E-06 -2E-07 0 S13 -2.4291 -0.1201 0.0167 0.0022 -0.0009 0.0001 -6E-06 1E-07 9E-10 0 S14 -1.0032 -0.1111 0.0248 -0.0032 -0.0001 0.0001 -2E-05 2E-06 -8E-08 1E-09

[0489] Example 29

[0490] Fig.57 is a view showing a twenty-ninth example of the optical imaging system, and Fig.58 Shows Fig.57 Aberration curves of the optical imaging system.

[0491] The optical imaging system 29 includes a first lens 1029 , a second lens 2029 , a third lens 3029 , a fourth lens 4029 , a fifth lens 5029 , a sixth lens 6029 and a seventh lens 7029 .

[0492] The first lens 1029 has a positive refractive power, a convex object side surface, and a concave image side surface. The second lens 2029 has a negative refractive power, a convex object side surface, and a concave image side surface. The third lens 3029 has a positive refractive power, a concave object side surface, and a convex image side surface. The fourth lens 4029 has a positive refractive power, a convex object side surface, and a concave image side surface. The fifth lens 5029 has a negative refractive power, a convex object side surface, and a concave image side surface. The sixth lens 6029 has a positive refractive power, a convex object side surface, and a concave image side surface. In addition, at least one inflection point is formed on either or both of the object side surface and the image side surface of the sixth lens 6029. The seventh lens 7029 has a positive refractive power, a convex object side surface, and a concave image side surface. In addition, two inflection points are formed on the object side surface of the seventh lens 7029, and one inflection point is formed on the image side surface of the seventh lens 7029.

[0493] The optical imaging system 29 further includes an aperture, a filter 8029, and an image sensor 9029. The aperture is disposed between the second lens 2029 and the third lens 3029 to adjust the amount of light incident on the image sensor 9029. The filter 8029 is disposed between the seventh lens 7029 and the image sensor 9029 to block infrared rays. The image sensor 9029 forms an imaging surface on which an image of an object is formed. Fig.57 Although not shown in the figure, the aperture stop is set at a distance of 0.904 mm from the object side surface of the first lens 1029 in the direction toward the imaging surface of the optical imaging system 29. This distance is equal to TTL-SL and can be calculated from the values ​​of TTL and SL of Example 29 listed in Table 59 presented later in this application.

[0494] Table 57 below shows Fig.57 The physical characteristics of the lenses and other elements of the optical imaging system are shown in Table 58 below. Fig.57 The aspheric coefficient of the lens.

[0495] Table 57

[0496]

[0497]

[0498] Table 58

[0499] K A B C D E F G H J S1 -0.1061 -0.0082 0.0469 -0.0925 0.0811 -0.0129 -0.032 0.0224 -0.0047 0 S2 -36.188 -0.0502 0.1624 -0.4029 0.6931 -0.7643 0.5021 -0.1789 0.0264 0 S3 0.0036 -0.0795 0.2057 -0.548 1.0742 -1.291 0.9097 -0.3412 0.052 0 S4 0.4038 -0.0325 0.0884 -0.3009 0.7004 -0.9194 0.6738 -0.2424 0.0308 0 S5 51.758 0.0055 -0.1746 0.5018 -0.9395 1.1442 -0.9144 0.4407 -0.0937 0 S6 42.164 0.0953 -0.4992 1.0397 -1.2284 0.8169 -0.2802 0.0384 4E-06 0 S7 -4.7579 0.1185 -0.4938 0.8554 -0.8643 0.5167 -0.185 0.0417 -0.0054 0 S8 -3.4393 0.0492 -0.194 0.3147 -0.3773 0.3249 -0.1878 0.063 -0.0088 0 S9 -8.5449 -0.0638 0.0289 -0.0884 0.1649 -0.171 0.0983 -0.0306 0.0041 0 S10 -18.064 -0.0543 -0.0172 0.0321 -0.0179 0.004 5E-06 -0.0001 8E-06 0 S11 -4.6497 0.0535 -0.0909 0.0613 -0.0311 0.011 -0.0026 0.0004 -2E-05 0 S12 -50 0.0103 -0.0176 0.0057 -0.0015 0.0003 -4E-05 2E-06 -6E-08 0 S13 -2.606 -0.1177 0.0192 -0.0004 -1E-04 -1E-05 4E-06 -4E-07 9E-09 0 S14 -1.0102 -0.0979 0.0187 -0.0024 0.0001 2E-05 -6E-06 6E-07 -3E-08 6E-10

[0500] Table 59 below shows the total focal length f of the optical imaging system, the total length TTL of the optical imaging system (the distance from the object side of the first lens to the imaging plane), the distance SL from the aperture to the imaging plane, the f-number (F No.) of the optical imaging system (the total focal length f of the optical imaging system divided by the entrance pupil diameter of the optical imaging system, where both f and the entrance pupil diameter are expressed in mm), the image height (IMG HT) on the imaging plane (half the diagonal length of the imaging plane), and the field of view (FOV) of the optical imaging system for each of Examples 1 to 29 described herein. 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.

[0501] Table 59

[0502]

[0503]

[0504] Table 60 below shows the focal length f1 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 29 described herein.

[0505] Table 60

[0506]

[0507]

[0508] Table 61 below shows the thickness of the edge of the first lens (L1edgeT), the thickness of the edge of the second lens (L2edgeT), the thickness of the edge of the third lens (L3edgeT), the thickness of the edge of the fourth lens (L4edgeT), the thickness of the edge of the fifth lens (L5edgeT), the thickness of the edge of the sixth lens (L6edgeT), and the thickness of the edge of the seventh lens (L7edgeT) in mm for each of Examples 1 to 29 described herein.

[0509] Table 61

[0510]

[0511]

[0512] Table 62 below shows the sag value of the object side surface of the fifth lens (L5S1 sag), the sag value of the image side surface of the fifth lens (L5S2 sag), 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), the thickness of the seventh lens at the first inflection point on the image side surface of the seventh lens (Yc72P1), and the thickness of the seventh lens at the second inflection point on the image side surface of the seventh lens (Yc72P2), expressed in mm for each of Examples 1 to 29 described herein.

[0513] Table 62

[0514]

[0515]

[0516] Table 63 below shows the inner diameter of each of the first to seventh spacers for each of Examples 1 to 29 described herein. 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.

[0517] Table 63

[0518]

[0519]

[0520] Table 64 below shows the average cost in mm for each of Examples 1 to 29 described herein. 3 denoted by 1 to 7. 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.

[0521] Table 64

[0522]

[0523]

[0524] Table 65 below shows the weight of each of the first to seventh lenses in mg for each of Examples 1 to 29 described herein. L1w 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.

[0525] Table 65

[0526] Example L1W L2W L3 L4W L5 L6 LqCy 1 6.4242 5.5538 5.4515 7.2138 10.9898 11.5236 31.9750 2 7.1519 5.5856 6.0508 8.9861 11.6264 12.0174 31.9028 3 6.0947 6.5542 8.6785 6.5426 9.1328 15.7931 19.7263 4 7.3509 8.2286 10.2345 8.1875 8.3100 16.2493 20.6923 5 6.5980 7.2274 9.6996 7.7595 7.1717 12.9205 16.7253 6 5.9539 8.3386 10.4718 9.7099 12.6189 11.5472 28.2371 7 6.9091 9.5794 12.2729 11.3898 15.0391 13.3856 37.0837 8 4.2796 5.9149 7.3646 7.0191 7.1741 7.4676 21.5126 9 5.4436 6.2232 5.3513 4.3058 7.3623 8.4633 20.4684 10 4.8614 4.7847 3.5284 7.4866 13.3251 8.1111 28.6130 11 5.1946 6.0327 5.7303 6.0104 6.8221 7.1532 21.1025 12 5.8646 5.0523 8.3435 8.9534 11.4784 14.9196 27.3929 13 5.3716 5.5136 7.8076 7.3291 15.3129 19.8988 18.6318 14 6.3367 6.6350 8.5711 7.6996 10.1409 14.6680 24.4148 15 6.9418 7.1388 8.5971 7.5420 20.4557 22.4651 38.4452 16 4.2017 4.9503 5.2516 5.8568 13.5639 31.4884 15.1990 17 4.5985 6.2956 7.1042 6.8657 9.2054 28.8192 23.7207 18 3.9640 5.7458 4.2174 5.2656 14.1055 26.7923 17.2272 19 4.4041 6.8103 5.8168 7.8490 11.5868 9.3592 28.4188 20 4.8390 5.7284 6.4804 6.9816 12.6288 12.2097 34.8787 21 5.5591 5.9656 8.1197 7.8570 11.4036 35.5151 36.2823 22 5.2816 8.1251 5.3044 19.9758 11.5723 36.2468 39.1416 23 4.4926 3.8434 5.1440 5.3949 10.2143 10.9690 19.9312 24 5.2374 7.0007 7.4705 9.7477 13.1074 22.5603 17.8857 25 5.3524 5.5459 5.4975 5.0047 11.1733 22.7646 36.2952 26 5.7664 6.3156 4.7007 7.0690 10.2210 15.5030 23.3392 27 3.9624 4.8894 4.0843 7.6119 7.8166 13.5561 33.1329 28 4.9418 5.3696 6.7144 5.2752 12.3343 38.3453 47.9448 29 5.8524 6.0873 5.3480 5.2823 11.5158 32.8465 48.3872

[0527] Table 66 below shows the total outer diameter (including the rib) of each of the first to seventh lenses in mm for each of Examples 1 to 29 described herein. L1TR 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.

[0528] Table 66

[0529] Example L1TR L2TR L3TR L4T L5T L6T L7T 1 4.220 4.420 4.720 5.520 6.240 6.640 6.840 2 4.360 4.560 4.860 5.560 6.180 6.580 6.780 3 2.150 2.250 2.380 2.510 2.750 3.120 3.250 4 2.280 2.400 2.530 2.630 2.780 3.150 3.250 5 2.290 2.400 2.540 2.630 2.780 2.910 3.040 6 2.460 2.580 2.690 2.800 3.170 3.310 3.470 7 2.370 2.510 2.730 2.890 3.210 3.440 3.650 8 2.060 2.190 2.300 2.360 2.520 2.830 3.080 9 4.220 4.420 4.540 4.720 5.400 5.740 6.300 10 3.990 4.150 4.350 4.580 5.100 5.560 6.180 11 4.210 4.410 4.540 4.800 4.970 5.600 5.990 12 4.210 4.300 4.440 4.840 5.470 6.120 6.900 13 4.190 4.280 4.410 4.810 5.510 6.160 6.520 14 4.430 4.520 4.660 5.060 5.500 6.260 6.570 15 4.480 4.570 4.700 5.030 6.660 7.190 7.430 16 3.981 4.237 4.520 5.181 5.902 6.301 6.501 17 4.074 4.256 4.834 5.422 6.068 6.596 6.786 18 3.510 3.810 4.390 4.980 5.850 6.150 6.250 19 3.930 4.130 4.710 6.170 5.300 6.570 6.670 20 4.030 4.230 4.810 5.400 6.270 6.670 6.770 21 4.320 4.510 5.090 5.680 6.560 6.960 7.160 22 4.450 4.650 5.220 5.810 6.690 7.090 7.290 23 3.930 4.130 4.330 4.930 5.420 5.820 6.020 24 4.250 4.340 4.480 4.880 5.510 6.330 6.700 25 4.100 4.190 4.320 4.720 5.350 6.170 7.030 26 4.110 4.200 4.340 4.612 5.550 6.350 7.210 27 3.730 3.820 3.960 4.390 4.960 6.000 6.860 28 3.970 4.060 4.190 4.630 5.200 7.150 8.020 29 4.390 4.480 4.610 5.040 5.610 7.090 7.950

[0530] Table 67 below shows the thickness of the flat portion of the rib of each of the first to seventh lenses in mm for each of Examples 1 to 29 described herein. L1rt is the thickness of the flat portion of the rib of the first lens, L2rt is the thickness of the flat portion of the rib of the second lens, L3rt is the thickness of the flat portion of the rib of the third lens, L4rt is the thickness of the flat portion of the rib of the fourth lens, L5rt is the thickness of the flat portion of the rib of the fifth lens, L6rt is the thickness of the flat portion of the rib of the sixth lens, and L7rt is the thickness of the flat portion of the rib of the seventh lens.

[0531] Table 67

[0532] Example L1rt L2RT L3rt L4rt L5T L6 L7t 1 0.4850 0.3750 0.3100 0.2100 0.2950 0.3350 0.6850 2 0.5350 0.3550 0.3300 0.2300 0.3250 0.3900 0.7000 3 0.5900 0.4800 0.5000 0.3000 0.4700 0.390 0.360 4 0.6000 0.5400 0.5400 0.4400 0.2500 0.380 0.420 5 0.5400 0.5000 0.5200 0.4200 0.2100 0.390 0.400 6 0.3900 0.4400 0.4700 0.3600 0.4200 0.3800 0.4700 7 0.6000 0.5100 0.5500 0.4200 0.4900 0.3400 0.5400 8 0.5100 0.4400 0.4600 0.4100 0.3100 0.2900 0.4500 9 0.4350 0.4300 0.3600 0.2150 0.3200 0.3300 0.4050 10 0.3800 0.2800 0.2100 0.4600 0.5200 0.3900 0.8800 11 0.4200 0.4200 0.3800 0.4000 0.2900 0.3300 0.5400 12 0.5500 0.3800 0.5800 0.4100 0.5000 0.3200 0.5300 13 0.5200 0.4200 0.5200 0.4100 0.6100 0.7000 0.3700 14 0.5600 0.4300 0.5600 0.5100 0.4000 0.3500 0.5500 15 0.5800 0.4600 0.5500 0.3300 0.6000 0.4800 0.7300 16 0.3720 0.4304 0.2292 0.2843 0.4170 0.6831 0.2615 17 0.4060 0.4930 0.3760 0.2810 0.3160 0.5010 0.4550 18 0.4820 0.3950 0.3160 0.3280 0.4220 0.8850 0.4090 19 0.4310 0.5560 0.3610 0.4290 0.3800 0.3800 0.6670 20 0.4310 0.4570 0.3610 0.3640 0.3800 0.3340 0.7290 21 0.4310 0.4080 0.2790 0.3690 0.2520 0.6740 0.7980 22 0.4310 0.4930 0.2550 0.8210 0.2520 0.6750 0.8860 23 0.4400 0.3300 0.3000 0.2600 0.4250 0.5000 0.5180 24 0.4800 0.4900 0.4800 0.5000 0.4700 0.8300 0.3200 25 0.4600 0.4000 0.3900 0.2600 0.4300 0.5400 0.8300 26 0.5100 0.4500 0.3400 0.4300 0.4100 0.4100 0.4200 27 0.4000 0.4200 0.3700 0.5000 0.3200 0.4600 0.7200 28 0.4700 0.4100 0.4500 0.4100 0.4700 0.9300 0.7000 29 0.4400 0.3900 0.4000 0.4000 0.3800 0.7400 0.7200

[0533] Table 68 below shows the dimensionless value of each of the ratio L1w / L7w in Conditional Expressions 1 and 6, the ratio S6d / f in Conditional Expressions 2 and 7, the ratio L1TR / L7TR in Conditional Expressions 3 and 8, the ratio L1234TRavg / L7TR in Conditional Expressions 4 and 9, and the ratio L12345TRavg / L7TR in Conditional Expressions 5 and 10 for each of Examples 1 to 29 described herein. The dimensionless value of each of these ratios is obtained by dividing two values ​​expressed in the same unit of measurement.

[0534] Table 68

[0535] Example L1w / L7w S6d / f L1TR / L7TR L1234TRavg / L7TR L12345TRavg / L7TR 1 0.2009 1.2353 0.6170 0.6901 0.7345 2 0.2242 1.2115 0.6431 0.7131 0.7528 3 0.3090 0.6392 0.6615 0.7146 0.7409 4 0.3552 0.6321 0.7015 0.7569 0.7766 5 0.3945 0.6228 0.7533 0.8109 0.8316 6 0.2109 0.6115 0.7089 0.7586 0.7896 7 0.1863 0.6213 0.6493 0.7192 0.7512 8 0.1989 0.6150 0.6688 0.7232 0.7422 9 0.2659 1.1308 0.6698 0.7103 0.7397 10 0.1699 1.0071 0.6456 0.6905 0.7175 11 0.2462 1.0786 0.7028 0.7496 0.7656 12 0.2141 1.1111 0.6101 0.6446 0.6742 13 0.2883 1.1333 0.6426 0.6783 0.7117 14 0.2595 1.0822 0.6743 0.7104 0.7358 15 0.1806 0.9136 0.6030 0.6319 0.6848 16 0.2764 1.1571 0.6124 0.6891 0.7329 17 0.1939 1.3141 0.6004 0.6847 0.7266 18 0.2301 1.0434 0.5616 0.6676 0.7213 19 0.1550 0.9886 0.5892 0.7099 0.7268 20 0.1387 0.5953 0.6821 0.7309 21 0.1532 1.1070 0.6034 0.6844 0.7307 22 0.1349 1.1844 0.6104 0.6903 0.7358 23 0.2254 1.0811 0.6528 0.7193 0.7555 24 0.2928 1.1487 0.6343 0.6698 0.7003 25 0.1475 1.0409 0.5832 0.6163 0.6452 26 0.2471 1.2304 0.5700 0.5985 0.6328 27 0.1196 1.0600 0.5437 0.5794 0.6082 28 0.1031 1.0935 0.4950 0.5252 0.5499 29 0.1209 1.2170 0.5522 0.5824 0.6070

[0536] Fig.59 and Fig.60 is a cross-sectional view showing an example of an optical imaging system and a lens barrel coupled to each other.

[0537] Examples of the optical imaging system 100 described in this application may include Fig.59 and Fig.60 The self-aligned structure shown.

[0538] exist Fig.59 In one example shown, the optical imaging system 100 includes a self-alignment structure in which the optical axes of 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.

[0539] 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 to fourth lenses 2000 to 4000 may be disposed not to contact the inner surface of the lens barrel 200.

[0540] although Fig.59 It is shown that the first to fourth lenses 1000 to 4000 are coupled to each other, but four consecutive lenses coupled to each other may be changed to the second to fifth lenses 2000 to 5000 , the third to sixth lenses 3000 to 6000 , or the fourth to seventh lenses 4000 to 7000 .

[0541] exist Fig.60 In another example shown, the optical imaging system 100 includes a self-alignment structure in which the optical axes of five consecutive lenses 1000, 2000, 3000, 4000 and 5000 are aligned with the optical axis of the optical imaging system 100 by connecting the five lenses 1000, 2000, 3000, 4000 and 5000 to each other.

[0542] 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 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 to fifth lenses 2000 to 5000 may be disposed not to contact the inner surface of the lens barrel 200.

[0543] although Fig.60It is shown that the first to fifth lenses 1000 to 5000 are coupled to one another, but five consecutive lenses coupled to one another may be changed to the second to sixth lenses 2000 to 6000 or the third to seventh lenses 3000 to 7000 .

[0544] Fig.61 is a cross-sectional view illustrating an example of the seventh lens.

[0545] Fig.61 The total outer diameter (L7TR) of the seventh lens, 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. Although Fig.61 Although not shown in FIG. 62 , the seventh lens may also have a second inflection point on the image side surface of the seventh lens, and the thickness of the seventh lens at the inflection point is Yc72P2 as listed in the header of Table 62.

[0546] Fig.62 is a cross-sectional view showing an example of the shape of a rib of a lens.

[0547] Examples of the optical imaging system 100 described in this application may include structures for preventing scintillation and reflection.

[0548] For example, Fig.62 As shown, the ribs of the first to seventh lenses 1000, 2000, 3000, 4000, 5000, 6000 and 7000 of the optical imaging system can be partially surface-treated to make the surface of the ribs rough. The surface treatment method may include chemical etching, physical grinding, or any other surface treatment method capable of increasing the surface roughness.

[0549] The surface treatment area EA may be formed in the entire area from the edge of the optical portion of the lens to the outer end of the rib portion, where light actually passes through the optical portion. Fig.62 As shown, the non-processed area NEA including the step portions E11, E21 and E22 may not be surface-processed, or may be surface-processed to have a roughness different from that of the surface-processed area EA. The step portions E11, E21 and E22 are portions where the thickness of the rib portion suddenly changes. The width G1 of the first non-processed area NEA formed on the object side of the lens may be different from the width G2 of the second non-processed area NEA formed on the image side of the lens. Fig.62 In the example shown, G1 is greater than G2.

[0550] The non-processed area NEA having the width G1 includes a first step portion E11, and the non-processed area NEA having the width G2 includes a second step portion E21 and a third step portion E22. A distance G4 from the outer end of the rib to the second step portion E21 is smaller than a distance G3 from the outer end of the rib to the first step portion E11. Similarly, a distance G5 from the outer end of the rib to the third step portion E22 is smaller than a distance G3 from the outer end of the rib to the first step portion E11.

[0551] Forming the positions of the non-processed area NEA and the step portions E11 , E21 , and E22 as described above can facilitate measurement of the concentricity of the lens.

[0552] The above-described examples enable miniaturization of the optical imaging system and enable easy correction of aberrations.

[0553] Although the present disclosure includes specific examples, it will be apparent after understanding the disclosure of the present application that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein should be considered to be descriptive only and not for limiting purposes. The description of the features or aspects in each example should be considered to be applicable to similar features or aspects in other examples. Suitable results may also be obtained if the described techniques are performed in a different order, and / or if the components in the described system, architecture, device or circuit are combined in a different manner and / or replaced or supplemented by other components or their equivalents. Therefore, the scope of the present disclosure is not limited by a detailed description, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be understood to be included in the present disclosure.

Claims

1. An optical imaging system, comprising: A first lens having positive refractive power; A second lens element having negative refractive power and a convex object side surface; A third lens element having negative refractive power; a fourth lens element having positive refractive power; A fifth lens element having negative refractive power; A sixth lens element having refractive power and a convex object side surface; The seventh lens element has negative refractive power and a concave image side surface. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are sequentially arranged along the optical axis of the optical imaging system from the object side of the optical imaging system toward the imaging surface of the optical imaging system. The optical imaging system includes a total of seven lenses with refractive power. The optical imaging system satisfies 0.4 < L1TR / L7TR < 0.7, wherein L1TR is the total outer diameter of the first lens, L1TR is the total outer diameter of the seventh lens, and L1TR and L7TR are expressed in the same unit of measurement. The optical imaging system further satisfies 0.1 < R1 / R5 < 0.7, 0.8 < R1 / R14 < 1.2 and 0.1 < (R11 + R14) / (R5 + R6) < 1.0, wherein R1 is the radius of curvature of the object side surface of the first 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, and R14 is the radius of curvature of the image side surface of the seventh lens, The optical imaging system also satisfies SD56<SD34, wherein 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, and 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.

2. The optical imaging system according to claim 1, wherein: The sixth lens includes positive refractive power.

3. The optical imaging system according to claim 1, wherein: The sixth lens includes negative refractive power.

4. The optical imaging system according to claim 1, wherein: The second lens has a concave image-side surface, Wherein, the third lens comprises a convex object side surface, and Wherein, the sixth lens includes a convex image-side surface.

5. The optical imaging system according to claim 1, wherein: The third lens comprises a convex object-side surface, The fourth lens comprises a concave object-side surface and a convex image-side surface, and Wherein, the seventh lens includes a convex object-side surface.

6. The optical imaging system according to claim 1, wherein: The second lens comprises a concave image-side surface, Wherein, the third lens comprises a convex image-side surface; and Wherein, the seventh lens includes a convex object-side surface.

7. The optical imaging system according to claim 1, wherein: At least one inflection point is formed on either or both of the object-side surface and the image-side surface of the sixth lens.

8. The optical imaging system according to claim 1, wherein: At least one inflection point is formed on either or both of the object-side surface and the image-side surface of the seventh lens.

Images