Optical imaging system

Abstract

The optical imaging system comprises, in order from an object side of the optical imaging system toward an image side of the optical imaging system, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, wherein the optical imaging system satisfies 1<|f123457-f| / f, wherein f123457 is a combined focal length of the first lens to the fifth lens and the seventh lens, f is a total focal length of the optical imaging system, and f123457 and f are expressed in the same unit of measurement.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2018-0061394, filed on May 29, 2018, with the Korean Intellectual Property Office, and Korean Patent Application No. 10-2018-0106186, filed on September 5, 2018, the entire disclosure of which is incorporated herein by reference for all purposes. Technical Field

[0003] This application relates to an optical imaging system comprising seven lenses. Background Technology

[0004] Mobile devices typically include cameras for video communication or image capture. However, due to space limitations within mobile devices, achieving high performance in such cameras is challenging.

[0005] Therefore, as the number of mobile terminals equipped with cameras increases, the demand for optical imaging systems that can improve camera performance without increasing camera size has increased. Summary of the Invention

[0006] This summary is provided to introduce the options of ideas in a simplified form, which will be further described in the detailed description below. This summary is not intended to highlight key or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter.

[0007] In one general aspect, an optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged in numerical order from the object side of the optical imaging system toward the image side of the optical imaging system, wherein the optical imaging system satisfies 1 < |f123457-f| / f, where f123457 is the combined focal length of the first to seventh lenses when the refractive index of the sixth lens is limited to 1.0, which is equal to the refractive index of air, and f is the total focal length of the optical imaging system, and f123457 and f are expressed in the same unit of measurement.

[0008] The object-side surface of the first lens can be convex.

[0009] The image-side surface of the seventh lens can be concave.

[0010] At least one inflection point can be formed on any one or both of the object-side and image-side surfaces of the sixth lens.

[0011] At least one inflection point can be formed on any one or both of the object-side and image-side surfaces of the seventh lens.

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

[0013] The object-side surface of the second lens can be convex.

[0014] The object-side surface of the third lens can be convex.

[0015] The object-side surface of the fourth lens can be convex.

[0016] The object-side or image-side of the fifth lens can be convex.

[0017] The sixth lens can have positive refractive power.

[0018] The seventh lens can have negative refractive power.

[0019] The optical imaging system can also satisfy 0.1 < L1w / L7w < 0.3, where L1w is the weight of the first lens, L7w is the weight of the seventh lens, and L1w and L7w are expressed in the same unit of measurement.

[0020] 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 f is the total focal length of the optical imaging system, S6d is the inner diameter of the spacer, and S6d and f are expressed in the same unit of measurement.

[0021] The optical imaging system can also satisfy 0.4 < L1TR / L7TR < 0.7, where L1TR is the total outer diameter of the first lens, L7TR is the total outer diameter of the seventh lens, and L1TR and L7TR are expressed in the same unit of measurement.

[0022] The optical imaging system can also satisfy 0.5 < L1234TRavg / L7TR < 0.75, where L1234TRavg is the average value of the total outer diameter of the first to fourth lenses, L7TR is the total outer diameter of the seventh lens, and L1234TRavg and L7TR are expressed in the same unit of measurement.

[0023] The optical imaging system can also satisfy 0.5 < L12345TRavg / L7TR < 0.76, where L12345TRavg is the average value of the total outer diameter of the first to fifth lenses, L7TR is the total outer diameter of the seventh lens, and L12345TRavg and L7TR are expressed in the same unit of measurement.

[0024] The second lens can have positive refractive power.

[0025] The third lens can have positive refractive power.

[0026] The paraxial region of the object side of the seventh lens can be concave.

[0027] Other features and aspects will be apparent from the following detailed description, the accompanying drawings and the appended claims. Attached Figure Description

[0028] Figure 1 This is a view showing a first example of an optical imaging system.

[0029] Figure 2 It shows Figure 1 Aberration curves of optical imaging systems.

[0030] Figure 3 This is a view showing a second example of an optical imaging system.

[0031] Figure 4 It shows Figure 3 Aberration curves of optical imaging systems.

[0032] Figure 5 This is a view showing a third example of an optical imaging system.

[0033] Figure 6 It shows Figure 5 Aberration curves of optical imaging systems.

[0034] Figure 7 This is a view showing a fourth example of an optical imaging system.

[0035] Figure 8 It shows Figure 7 Aberration curves of optical imaging systems.

[0036] Figure 9 This is a view showing the fifth example of an optical imaging system.

[0037] Figure 10 It shows Figure 9 Aberration curves of optical imaging systems.

[0038] Figure 11 This is a view showing the sixth example of an optical imaging system.

[0039] Figure 12 It shows Figure 11 Aberration curves of optical imaging systems.

[0040] Figure 13 This is a view showing the seventh example of an optical imaging system.

[0041] Figure 14 It shows Figure 13 Aberration curves of optical imaging systems.

[0042] Figure 15 This is a view showing the eighth example of an optical imaging system.

[0043] Figure 16 It shows Figure 15 Aberration curves of optical imaging systems.

[0044] Figure 17 This is a view showing the ninth example of an optical imaging system.

[0045] Figure 18 It shows Figure 17 Aberration curves of optical imaging systems.

[0046] Figure 19 This is a view showing the tenth example of an optical imaging system.

[0047] Figure 20 It shows Figure 19 Aberration curves of optical imaging systems.

[0048] Figure 21 This is a view showing the eleventh example of an optical imaging system.

[0049] Figure 22 It shows Figure 21 Aberration curves of optical imaging systems.

[0050] Figure 23 This is a view showing the twelfth example of an optical imaging system.

[0051] Figure 24 It shows Figure 23 Aberration curves of optical imaging systems.

[0052] Figure 25 This is a view showing the thirteenth example of an optical imaging system.

[0053] Figure 26 It shows Figure 25 Aberration curves of optical imaging systems.

[0054] Figure 27 This is a view showing the fourteenth example of an optical imaging system.

[0055] Figure 28 It shows Figure 27 Aberration curves of optical imaging systems.

[0056] Figure 29 This is a view showing the fifteenth example of an optical imaging system.

[0057] Figure 30 It shows Figure 29 Aberration curves of optical imaging systems.

[0058] Figure 31 This is a view showing the sixteenth example of an optical imaging system.

[0059] Figure 32 It shows Figure 31 Aberration curves of optical imaging systems.

[0060] Figure 33 This is a view showing the seventeenth example of an optical imaging system.

[0061] Figure 34 It shows Figure 33 Aberration curves of optical imaging systems.

[0062] Figure 35 This is a view showing the eighteenth example of an optical imaging system.

[0063] Figure 36 It shows the representation Figure 35 Aberration curves representing aberration characteristics.

[0064] Figure 37 This is a view showing the nineteenth example of an optical imaging system.

[0065] Figure 38 It shows Figure 37 Aberration curves of optical imaging systems.

[0066] Figure 39 This is a view showing the twentieth example of an optical imaging system.

[0067] Figure 40 It shows Figure 39 Aberration curves of optical imaging systems.

[0068] Figure 41 This is a view showing the twenty-first example of an optical imaging system.

[0069] Figure 42 It shows Figure 41 Aberration curves of optical imaging systems.

[0070] Figure 43 This is a view showing the twenty-second example of an optical imaging system.

[0071] Figure 44 It shows Figure 43 Aberration curves of optical imaging systems.

[0072] Figure 45 This is a view showing the twenty-third example of an optical imaging system.

[0073] Figure 46 It shows Figure 45 Aberration curves of optical imaging systems.

[0074] Figure 47 and Figure 48 This is a cross-sectional view showing an example of an optical imaging system and lens barrel connected to each other.

[0075] Figure 49 This is a cross-sectional view showing an example of the seventh lens.

[0076] Figure 50 This is a cross-sectional view showing an example of the shape of the ribs of a lens.

[0077] Throughout the accompanying drawings and the detailed description, the same reference numerals denote the same elements. The drawings may not be drawn to scale, and for clarity, illustration, and convenience, the relative dimensions, scale, and depiction of the elements in the drawings may be exaggerated. Detailed Implementation

[0078] The following detailed description is provided to assist the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described in this application. However, after understanding the disclosure of this application, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described in this application will be apparent. For example, the order of operations described in this application is merely illustrative, and is not limited to the order set forth in this application, except for operations that must occur in a specific order, and obvious changes can be made after understanding the disclosure of this application. Furthermore, for clarity and conciseness, descriptions of features well-known in the art may be omitted.

[0079] The features described in this application may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein, which will be apparent upon understanding the disclosure of this application.

[0080] Throughout the specification, when an element such as a layer, region, or substrate is referred to as being "on," "connected to," or "attached to" another element, the element may be directly "on," directly "connected to," or directly "attached to" the other element, or one or more other intermediate elements may be present. Conversely, when an element is referred to as being "directly" "on," directly "connected to," or directly "attached to" another element, no other intermediate elements may be present.

[0081] As used in this application, the term "and / or" includes any one and any combination of any two or more of the related listed items.

[0082] Although terms such as “first,” “second,” and “third” may be used in this application to describe various components, assemblies, regions, layers, or sections, these components, assemblies, regions, layers, or sections should not be limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or section from another. Therefore, without departing from the teachings of the examples described in this application, the first component, first assembly, first region, first layer, or first section involved in the examples may also be referred to as a second component, second assembly, second region, second layer, or second section.

[0083] For ease of description, spatial relative terms such as "above," "upper," "below," and "lower" may be used in this application to describe the relationship of one element relative to another, as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are intended to cover different orientations of the device during use or operation. For example, if the device in the figures is flipped, an element described as being "above" or "upper" relative to another element would be "below" or "lower" relative to that other element. Therefore, depending on the spatial orientation of the device, the term "above" includes both upward and downward orientations. The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used in this application should be interpreted accordingly.

[0084] The terminology used in this application is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the articles “a,” “an,” and “the” are intended to include plural forms as well. The terms “comprising,” “including,” and “having” indicate the presence of the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0085] For ease of explanation, the thickness, size, and shape of the lenses shown in the accompanying drawings may be slightly exaggerated. Furthermore, the shapes of the spherical or aspherical surfaces of the lenses described in the detailed description and shown in the accompanying drawings are merely examples. That is, the shapes of the spherical or aspherical surfaces of the lenses are not limited to the examples described in this application.

[0086] The radius of curvature, lens thickness, distances between elements (including lenses or surfaces), effective radius of the lens, and the diameter, thickness, and length of various elements are expressed in millimeters (mm), and angles are expressed in degrees. The lens thickness and the distances between elements (including lenses or surfaces) are measured along the optical axis of the optical imaging system.

[0087] As used in this application, the term "effective radius" refers to the radius of the portion of the surface (object side or image side) through which light actually passes. Therefore, the effective radius can be equal to the radius of the optical portion of the lens, or smaller than the radius of the optical portion if light does not pass through the outer portion of the lens. The object side and image side of the lens can have different effective radii.

[0088] In this application, unless otherwise stated, references to the shape of a lens surface refer to the shape of the paraxial region of the lens. The paraxial region of the lens surface is the central portion of the lens surface surrounding the optical axis of the lens surface, wherein light rays incident on the lens surface make a small angle θ with the optical axis and are approximately sinθ≈θ, tanθ≈θ, and cosθ≈1.

[0089] For example, the statement that the object-side surface of a 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 a 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 a lens can be described as convex, the entire object-side surface of the lens may not be convex, and the peripheral region of the object-side surface of the lens may be concave. Furthermore, even if the image-side surface of a lens can be described as concave, the entire image-side surface of the lens may not be concave, and the peripheral region of the image-side surface of the lens may be convex.

[0090] An optical imaging system includes multiple lenses arranged along the optical axis. For example, 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 arranged sequentially along the optical axis from the object side of the optical imaging system toward the image side of the optical imaging system. The first lens is the lens closest to the object (or target) being imaged by the optical imaging system, while the seventh lens is the lens closest to the imaging surface of the optical imaging system or the image sensor.

[0091] Each lens in an optical imaging system comprises an optical portion and ribs. The optical portion of the lens is the part that refracts light and is typically formed in the central portion of the lens. The ribs of the lens are the edge portions that allow the lens to be mounted in a lens barrel and align the optical axis of the lens with the optical axis of the optical imaging system. The ribs of the lens extend radially outward from the optical portion. The optical portions of the lenses typically do not contact each other. For example, the first through seventh lenses are mounted in a lens barrel and spaced apart from each other by a predetermined distance 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 through fourth lenses, the ribs of the first through fifth lenses, or the ribs of the second through fourth lenses may contact each other so that the optical axes of these lenses can be easily aligned with the optical axis of the optical imaging system.

[0092] The configuration of the optical imaging system will be described next.

[0093] An optical imaging system includes multiple lenses. For example, 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 arranged in numerical order from the object side of the optical imaging system toward the image side of the optical imaging system.

[0094] The optical imaging system also includes an image sensor and a filter. The image sensor forms an imaging surface and converts the light refracted by the first to the seventh lenses into electrical signals. The filter is positioned between the lenses and the imaging surface and blocks infrared light from the light refracted by the first to the seventh lenses from entering the imaging surface.

[0095] The optical imaging system also includes aperture stops and spacers. An aperture stop may be positioned in front of the first lens, between two adjacent lenses (from the first to the seventh lens), or between the object-side and image-side surfaces of one of the lenses (from the first to the seventh lens) to adjust the amount of light incident on the imaging plane. Each spacer is positioned at a corresponding location between two lenses (from the first to the seventh lens) or between the seventh lens and a filter to maintain a predetermined distance between the two lenses or between the seventh lens and the filter. Additionally, the spacers may be made of a light-shielding material to block external light penetrating into the ribs of the lens. There may be six or seven spacers. For example, a first spacer may be positioned between the first and second lenses, a second spacer between the second and third lenses, a third spacer between the third and fourth lenses, a fourth spacer between the fourth and fifth lenses, a fifth spacer between the fifth and sixth lenses, and a sixth spacer between the sixth and seventh lenses. Furthermore, the optical imaging system may also include a seventh spacer positioned between the sixth and seventh lenses.

[0096] Next, the lenses used to construct the optical imaging system will be described.

[0097] The first lens has refractive power. For example, the first lens has positive or negative refractive power. One surface of the first lens may be convex. For example, the object-side surface of the first lens may be convex. The first lens may have an aspherical surface. For example, one or both surfaces of the first lens may be aspherical.

[0098] The second lens has refractive power. For example, the second lens has positive or 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. In another example, both surfaces of the second lens may be convex. The second lens may have aspherical surfaces. For example, one or both surfaces of the second lens may be aspherical.

[0099] The third lens has refractive power. For example, the third lens may have positive or negative refractive power. One surface of the third lens may be convex. For example, the object-side or image-side surface of the third lens may be convex. The third lens may have an aspherical surface. For example, one or both surfaces of the third lens may be aspherical.

[0100] The fourth lens has refractive power. For example, the fourth lens may have positive or negative refractive power. One surface of the fourth lens may be convex. For example, the object-side or image-side surface of the fourth lens may be convex. The fourth lens may have an aspherical surface. For example, one or both surfaces of the fourth lens may be aspherical.

[0101] The fifth lens has refractive power. For example, the fifth lens may have positive or negative refractive power. One surface of the fifth lens may be concave. For example, the object-side or image-side surface of the fifth lens may be concave. The fifth lens may have an aspherical surface. For example, one or both surfaces of the fifth lens may be aspherical.

[0102] The sixth lens has refractive power. For example, the sixth lens has positive or negative refractive power. One surface of the sixth lens may be concave. For example, 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. For example, at least one inflection point may be formed on either or both of the object-side and image-side surfaces of the sixth lens. Therefore, at least one surface of the sixth lens may include a paraxial region and a peripheral region with different shapes from each other. For example, the paraxial region of the image-side surface of the sixth lens may be concave, but its peripheral region may be convex. The sixth lens may have an aspherical surface. For example, one or both surfaces of the sixth lens may be aspherical.

[0103] The seventh lens has refractive power. For example, the seventh lens has positive or negative refractive power. One surface of the seventh lens may be concave. For example, 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. For example, at least one inflection point may be formed on either or both of the object-side and image-side surfaces of the seventh lens. Therefore, at least one surface of the seventh lens may include a paraxial region and a peripheral 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 its peripheral region may be convex. The seventh lens may have an aspherical surface. For example, one or both surfaces of the seventh lens may be aspherical.

[0104] Lenses in an optical imaging system can be made of optical materials with high light transmittance. For example, the first through seventh lenses can be made of plastic. However, the materials used for the first through seventh lenses are not limited to plastic.

[0105] The aspherical surfaces of the first to seventh lenses can be represented by the following Equation 1:

[0106]

[0107] In Equation 1, c is the curvature of the lens (the reciprocal of the radius of curvature), K is the conic constant, Y is the distance from a specific point on the aspherical surface of the lens to the optical axis in a direction perpendicular to the optical axis, A to H are aspherical constants, and Z (or sag) is the distance between a specific point on the aspherical surface of the lens at a distance Y from the optical axis and a tangent plane perpendicular to the optical axis and intersecting the vertex of the aspherical surface of the lens. Some examples disclosed in this application include the aspherical constant J. Additional terms JY can be added. 20 Add to Equation 1 to reflect the effect of the aspherical constant J.

[0108] An optical imaging system can satisfy one or more of the following conditional expressions 1 to 6:

[0109] 0.1 < L1w / L7w < 0.4 (Conditional expression 1)

[0110] 0.5 < S6d / f < 1.4 (Conditional expression 2)

[0111] 0.4 < L1TR / L7TR < 0.8 (Conditional expression 3)

[0112] 0.5 < L1234TRavg / L7TR < 0.9 (Conditional expression 4)

[0113] 0.5 < L12345TRavg / L7TR < 0.9 (Conditional expression 5)

[0114] 1 < |f123457-f| / f (conditional expression 6)

[0115] In the above expressions, L1w is the weight of the first lens (in mg), L7w is the weight of the seventh lens (in mg), S6d is the inner diameter of the sixth spacer (in mm), f is the total focal length of the optical imaging system (in mm), L1TR is the total outer diameter of the first lens (in mm), L7TR is the total outer diameter of the seventh lens (in mm), L1234TRavg is the average total outer diameter of the first to fourth lenses (in mm), L12345TRavg is the average total outer diameter of the first to fifth lenses (in mm), and f123457 is the combined focal length of the first to seventh lenses (in mm) when the refractive index of the sixth lens is limited to 1.0 (equal to the refractive index of air). The total outer diameter of the lens is the diameter of the lens including the optical portion and the ribs.

[0116] Conditional expressions 1 and 3 specify the ranges for the weight ratio and overall outer diameter ratio between the first and seventh lenses to facilitate self-alignment between the lenses and alignment through the lens barrel. Conditional expression 2 specifies the range for the ratio of the inner diameter of the sixth spacer to the total focal length of the optical imaging system to minimize flare phenomenon. Conditional expressions 4 and 5 specify the overall outer diameter ratio between the lenses to facilitate aberration correction. Conditional expression 6 specifies the lower limit of the degree to which the total focal length of the optical imaging system is shortened by the sixth lens.

[0117] Optical imaging systems may also satisfy one or more of the following conditional expressions 7 to 12:

[0118] 0.1 < L1w / L7w < 0.3 (Conditional expression 7)

[0119] 0.5 < S6d / f < 1.2 (Conditional expression 8)

[0120] 0.4 < L1TR / L7TR < 0.7 (Conditional expression 9)

[0121] 0.5 < L1234TRavg / L7TR < 0.75 (Conditional expression 10)

[0122] 0.5 < L12345TRavg / L7TR < 0.76 (Conditional expression 11)

[0123] 1 < |f123457-f| / f < 100 (Conditional expression 12)

[0124] Except that conditional expressions 7 through 12 specify a narrower range, conditional expressions 7 through 12 are the same as conditional expressions 1 through 6.

[0125] The optical imaging system may also satisfy one or more of the following conditional expressions 13 to 33:

[0126] 0.01 < R1 / R4 < 1.3 (Conditional expression 13)

[0127] 0.1 < R1 / R5 < 0.7 (Conditional expression 14)

[0128] 0.05 < R1 / R6 < 0.9 (Conditional expression 15)

[0129] 0.2 < R1 / R11 < 1.2 (Conditional expression 16)

[0130] 0.8 < R1 / R14 < 1.2 (Conditional expression 17)

[0131] 0.6 < (R11 + R14) / (2 × R1) < 3.0 (Conditional expression 18)

[0132] 0.4 < D13 / D57 < 1.2 (Conditional expression 19)

[0133] 0.1 < (1 / f1 + 1 / f2 + 1 / f3 + 1 / f4 + 1 / f5 + 1 / f6 + 1 / f7) × f < 0.8 (Conditional expression 20)

[0134] 0.1<(1 / f1+1 / f2+1 / f3+1 / f4+1 / f5+1 / f6+1 / f7)×TTL<1.0

[0135] (Conditional Expression 21)

[0136] 0.2 < TD1 / D67 < 0.8 (Conditional expression 22)

[0137] 0.1 < (R11 + R14) / (R5 + R6) < 1.0 (Conditional expression 23)

[0138] SD12 < SD34 (conditional expression 24)

[0139] SD56 < SD67 (Conditional expression 25)

[0140] SD56 < SD34 (conditional expression 26)

[0141] 0.6 < TTL / (2×(IMG HT)) < 0.9 (Conditional expression 27)

[0142] 0.2 < ΣSD / ΣTD < 0.7 (Conditional expression 28)

[0143] 0 < min(f1:f3) / max(f4:f7) < 0.4 (Conditional expression 29)

[0144] 0.4 < (ΣTD) / TTL < 0.7 (Conditional expression 30)

[0145] 0.7 < SL / TTL < 1.0 (Conditional expression 31)

[0146] 0.81 < f12 / f123 < 0.96 (Conditional expression 32)

[0147] 0.6 < f12 / f1234 < 0.84 (Conditional expression 33)

[0148] In the above conditional expressions, R1 is the radius of curvature of the object-side surface of the first lens, R4 is the radius of curvature of the image-side surface of the second lens, R5 is the radius of curvature of the object-side surface of the third lens, R6 is the radius of curvature of the image-side surface of the third lens, R11 is the radius of curvature of the object-side surface of the sixth lens, R14 is the radius of curvature of the image-side surface of the seventh lens, D13 is the distance from the object-side surface of the first lens to the image-side surface of the third lens, D57 is the distance from the object-side surface of the fifth lens to the image-side surface of the seventh lens, 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, and f5 is the focal length of the fifth lens. f6 is the focal length of the sixth lens, f7 is the focal length of the seventh lens, f is the total focal length of the optical imaging system, TTL is the distance from the object-side surface of the first lens to the imaging plane of the optical imaging system, TD1 is the thickness of the first lens along the optical axis, D67 is the distance from the object-side surface of the sixth lens to the image-side surface of the seventh lens, SD12 is the distance from the image-side surface of the first lens to the object-side surface of the second lens, SD34 is the distance from the image-side surface of the third lens to the object-side surface of the fourth lens, SD56 is the distance from the image-side surface of the fifth lens to the object-side surface of the sixth lens, SD67 is the distance from the image-side surface of the sixth lens to the object-side surface of the seventh lens, IMG HT is half the diagonal length of the imaging plane, ΣSD is the sum of the air gaps between the lenses, ΣTD is the sum of the thicknesses of the lenses along the optical axis, min(f1:f3) is the minimum absolute value of the focal lengths of the first to third lenses, max(f4:f7) is the maximum absolute value of the focal lengths of the fourth to seventh lenses, SL is the distance from the aperture stop to the imaging plane, f12 is the combined focal length of the first and second lenses, f123 is the combined focal length of the first to third lenses, and f1234 is the combined focal length of the first to fourth lenses.

[0149] Conditional expression 13 specifies the design range for the second lens to minimize the aberrations caused by the first lens. For example, it is difficult to achieve adequate correction of longitudinal spherical aberration for a second lens with a radius of curvature higher than the upper limit of conditional expression 13, and it is difficult to achieve adequate correction of the astigmatism curve for a second lens with a radius of curvature lower than the lower limit of conditional expression 13.

[0150] Conditional expressions 14 and 15 specify the design range for the third lens to minimize the aberrations caused by the first lens. For example, it is difficult to achieve adequate correction of longitudinal spherical aberration for a third lens with a radius of curvature higher than the upper limit of conditional expressions 14 or 15, and it is difficult to achieve adequate correction of the astigmatism curve for a third lens with a radius of curvature lower than the lower limit of conditional expressions 14 or 15.

[0151] Conditional expression 16 specifies the design range for the sixth lens to minimize the aberrations caused by the first lens. For example, a sixth lens with a radius of curvature higher than the upper limit of conditional expression 16 is difficult to adequately correct for longitudinal spherical aberration, and a sixth lens with a radius of curvature lower than the lower limit of conditional expression 16 is prone to flickering.

[0152] Conditional expression 17 specifies the design range for the seventh lens to minimize the aberrations caused by the first lens. For example, a seventh lens with a radius of curvature higher than the upper limit of conditional expression 17 is difficult to adequately correct for longitudinal spherical aberration, and a seventh lens with a radius of curvature lower than the lower limit of conditional expression 17 is prone to causing the image plane to bend.

[0153] Conditional expression 18 specifies the ratio of the sum of the radii of curvature of the sixth and seventh lenses to twice the radius of curvature of the first lens, in order to correct longitudinal spherical aberration and achieve excellent optical performance.

[0154] Conditional expression 19 specifies the ratio of optical imaging systems that can be installed in a compact terminal. For example, an optical imaging system with a ratio higher than the upper limit of conditional expression 19 may result in a longer overall length of the optical imaging system, while an optical imaging system with a ratio lower than the lower limit of conditional expression 19 may result in a larger cross-section of the optical imaging system.

[0155] Conditional expressions 20 and 21 specify the refractive power ratios of the first through seventh lenses to facilitate the mass production of optical imaging systems. For example, an optical imaging system with a refractive power ratio higher than the upper limit of conditional expression 20 or 21, or lower than the lower limit of conditional expression 20 or 21, would be difficult to commercialize due to the excessive refractive power of one or more of the first through seventh lenses.

[0156] Conditional expression 22 specifies the thickness range of the first lens used to realize the compact optical imaging system. For example, a first lens with a thickness higher than the upper limit of conditional expression 22 or lower than the lower limit of conditional expression 22 would be too thick or too thin to manufacture.

[0157] Conditional expression 24 specifies the design conditions for the first to fourth lenses used to improve chromatic aberration. For example, a shorter distance between the first and second lenses than between the third and fourth lenses is beneficial for improving chromatic aberration.

[0158] Conditional expressions 27 to 30 specify the design conditions for implementing a compact optical imaging system. For example, lenses that deviate from the numerical range of conditional expressions 28 or 30 are difficult to form by injection molding and are difficult to process.

[0159] Conditional expressions 31 to 33 specify the design conditions for an optical imaging system taking into account the position of the aperture stop. For example, an optical imaging system that does not satisfy one or more of the conditional expressions 31 to 33 may have a longer total length due to the refractive power of the lens positioned behind the aperture stop.

[0160] Next, various examples of optical imaging systems will be described. In the tables described below, 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 plane.

[0161] First Example

[0162] Figure 1 A view showing a first example of an optical imaging system, and Figure 2 It shows Figure 1 Aberration curves of optical imaging systems.

[0163] 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.

[0164] The first lens 1001 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2001 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3001 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4001 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5001 has negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6001 has positive refractive power, a convex object-side surface, and a convex image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the sixth lens 6001. The seventh lens 7001 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the seventh lens 7001.

[0165] The optical imaging system 1 also includes an aperture stop, a filter 8001, and an image sensor 9001. The aperture stop is positioned 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 positioned between the seventh lens 7001 and the image sensor 9001 to block infrared light. The image sensor 9001 forms an imaging surface on which an image of the target is formed. Although not in... Figure 1 As shown, the aperture stop is set at a distance of 0.818 mm from the object side of the first lens 1001 toward the image side of the optical imaging system 1. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 1 listed in Table 47, which will be presented later in this application.

[0166] Table 1 below shows the construction Figure 1 The physical characteristics of the lenses and other components of the optical imaging system 1 are shown in Table 2 below. Figure 1 The aspherical coefficient of the lens.

[0167] Table 1

[0168]

[0169] Table 2

[0170]

[0171] Second example

[0172] Figure 3 This is a view showing a second example of an optical imaging system, and Figure 4 It shows Figure 3 Aberration curves of optical imaging systems.

[0173] 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.

[0174] The first lens 1002 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2002 has positive refractive power, a convex object-side surface, and a convex image-side surface. The third lens 3002 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4002 has negative refractive power, a concave object-side surface, and a convex image-side surface. The fifth lens 5002 has positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6002 has negative refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6002. The seventh lens 7002 has positive refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7002.

[0175] The optical imaging system 2 also includes an aperture stop, a filter 8002, and an image sensor 9002. The aperture stop is positioned between the second lens 2002 and the third lens 3002 to adjust the amount of light incident on the image sensor 9002. The filter 8002 is positioned between the seventh lens 7002 and the image sensor 9002 to block infrared light. The image sensor 9002 forms an imaging surface on which an image of the target is formed. Although not in... Figure 3 As shown, the aperture stop is positioned at a distance of 1.259 mm from the object side of the first lens 1002 toward the image side of the optical imaging system 2. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 2 listed in Table 47, which will be presented later in this application.

[0176] Table 3 below shows the construction Figure 3 The physical characteristics of the lenses and other components of the optical imaging system 2 are shown in Table 4 below. Figure 3 The aspherical coefficient of the lens.

[0177] Table 3

[0178]

[0179] Table 4

[0180]

[0181]

[0182] Third Example

[0183] Figure 5This is a view showing a third example of an optical imaging system, and Figure 6 It shows Figure 5 Aberration curves of optical imaging systems.

[0184] 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.

[0185] The first lens 1003 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2003 has positive refractive power, a convex object-side surface, and a convex image-side surface. The third lens 3003 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4003 has negative refractive power, a concave object-side surface, and a convex image-side surface. The fifth lens 5003 has positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6003 has negative refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6003. The seventh lens 7003 has positive refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7003.

[0186] The optical imaging system 3 also includes an aperture stop, a filter 8003, and an image sensor 9003. The aperture stop is positioned 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 positioned between the seventh lens 7003 and the image sensor 9003 to block infrared light. The image sensor 9003 forms an imaging surface on which an image of the target is formed. Although not in... Figure 5 As shown, however, the aperture stop is set at a distance of 1.169 mm from the object side of the first lens 1003 toward the image side of the optical imaging system 3. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 3 listed in Table 47, which will be presented later in this application.

[0187] Table 5 below shows the construction Figure 5 The physical characteristics of the lenses and other components of the optical imaging system 3 are shown in Table 6 below. Figure 5 The aspherical coefficient of the lens.

[0188] Table 5

[0189]

[0190] Table 6

[0191]

[0192]

[0193] Fourth example

[0194] Figure 7 This is a view showing a fourth example of an optical imaging system, and Figure 8 It shows Figure 7 Aberration curves of optical imaging systems.

[0195] 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.

[0196] The first lens 1004 has negative refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2004 has positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3004 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4004 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5004 has positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6004 has positive refractive power, a convex object-side surface, and a convex image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6004. The seventh lens 7004 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7004.

[0197] The optical imaging system 4 also includes an aperture stop, a filter 8004, and an image sensor 9004. The aperture stop is positioned between the first lens 1004 and the second lens 2004 to adjust the amount of light incident on the image sensor 9004. The filter 8004 is positioned between the seventh lens 7004 and the image sensor 9004 to block infrared light. The image sensor 9004 forms an imaging surface on which an image of the target is formed. Although not in... Figure 7 As shown, however, the aperture stop is set at a distance of 0.383 mm from the object side of the first lens 1004 toward the image side of the optical imaging system 4. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 4 listed in Table 47, which will be presented later in this application.

[0198] Table 7 below shows the construction Figure 7 The physical characteristics of the lenses and other components of the optical imaging system 4 are shown in Table 8 below. Figure 7 The aspherical coefficient of the lens.

[0199] Table 7

[0200]

[0201]

[0202] Table 8

[0203] K A B C D E F G H J S1 -3.5715 0.0005 0.0011 -0.0181 0.0025 0.0107 -0.0084 0.0026 -0.0003 0 S2 -9.1496 -0.0513 -0.0055 0.0116 0.0161 -0.0207 0.0078 -0.001 0 0 S3 -2.5622 -0.0879 0.1115 -0.1204 0.1625 -0.1325 0.0578 -0.0118 0.0006 0 S4 -90 -0.078 0.2103 -0.4384 0.6397 -0.6153 0.3736 -0.1288 0.0189 0 S5 0 -0.1133 0.2975 -0.5447 0.7496 -0.7199 0.4525 -0.1642 0.0257 0 S6 4.6946 -0.0705 0.1434 -0.2144 0.1998 -0.0956 -0.0142 0.0399 -0.0137 0 S7 0 -0.0972 0.1221 -0.3303 0.5457 -0.6222 0.4555 -0.1995 0.0405 0 S8 0 -0.1596 0.2027 -0.3281 0.3412 -0.2472 0.1212 -0.0385 0.0064 0 S9 -18.27 -0.0564 -0.0069 0.0518 -0.0566 0.0228 -0.0011 -0.0019 0.0004 0 S10 -15.127 -0.0603 -0.0145 0.0594 -0.0601 0.0318 -0.0096 0.0015 -1E-04 0 S11 0 0.0027 -0.0398 0.025 -0.0137 0.005 -0.001 1E-04 -4E-06 0 S12 -1.1693 0.1224 -0.1006 0.0535 -0.0195 0.005 -0.0008 8E-05 -3E-06 0 S13 -4.4446 -0.097 -0.0137 0.0358 -0.0141 0.0028 -0.0003 2E-05 -5E-07 0 S14 -8.7431 -0.0906 0.0342 -0.009 0.0017 -0.0002 2E-05 -1E-06 3E-08 0

[0204] Fifth example

[0205] Figure 9 This is a view showing the fifth example of an optical imaging system, and Figure 10 It shows Figure 9 Aberration curves of optical imaging systems.

[0206] 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.

[0207] The first lens 1005 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2005 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3005 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4005 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5005 has negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6005 has positive refractive power, a convex object-side surface, and a convex image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the sixth lens 6005. The seventh lens 7005 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the seventh lens 7005.

[0208] The optical imaging system 5 also includes an aperture stop, a filter 8005, and an image sensor 9005. The aperture stop is positioned between the first lens 1005 and the second lens 2005 to adjust the amount of light incident on the image sensor 9005. The filter 8005 is positioned between the seventh lens 7005 and the image sensor 9005 to block infrared light. The image sensor 9005 forms an imaging surface on which an image of the target is formed. Although not in... Figure 9 As shown, however, the aperture stop is set at a distance of 0.731 mm from the object side of the first lens 1005 toward the image side of the optical imaging system 5. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 5 listed in Table 47, which will be presented later in this application.

[0209] Table 9 below shows the construction Figure 9 The physical characteristics of the lenses and other components of the optical imaging system 5 are shown in Table 10 below. Figure 9 The aspherical coefficient of the lens.

[0210] Table 9

[0211]

[0212]

[0213] Table 10

[0214] K A B C D E F G H J S1 -0.7464 0.0139 0.0344 -0.0749 0.1029 -0.0706 0.0173 0.0042 -0.0023 0 S2 36.669 -0.0823 0.195 -0.3067 0.3634 -0.323 0.1902 -0.0632 0.0086 0 S3 -1.3559 -0.1603 0.3305 -0.4059 0.3324 -0.1787 0.0673 -0.0166 0.0018 0 S4 -0.4109 -0.0907 0.1444 0.1155 -0.7969 1.5009 -1.4406 0.7219 -0.147 0 S5 0 -0.0739 0.0463 -0.1203 0.1165 -0.0578 -0.0089 0.0233 -0.0057 0 S6 0 -0.0932 0.0034 0.0521 -0.1827 0.2457 -0.2173 0.1126 -0.0241 0 S7 25.148 -0.1235 -0.1887 0.3763 -0.554 0.6731 -0.5796 0.2782 -0.0538 0 S8 -99 -9E-05 -0.3274 0.3588 -0.3195 0.3451 -0.2608 0.0995 -0.0144 0 S9 -70.894 0.0205 0.0483 -0.5284 0.7583 -0.4915 0.1636 -0.0271 0.0018 0 S10 2.2832 0.1759 -0.3448 0.2283 -0.0716 0.011 -0.0007 -4E-06 1E-06 0 S11 -99 0.1188 -0.2169 0.1675 -0.0871 0.0276 -0.0049 0.0005 -2E-05 0 S12 -3.3067 0.1644 -0.1849 0.1159 -0.049 0.0138 -0.0024 0.0002 -9E-06 0 S13 -2.4772 -0.1026 -0.0482 0.074 -0.0308 0.0067 -0.0008 6E-05 -2E-06 0 S14 -1.1028 -0.2935 0.2033 -0.1127 0.0457 -0.0129 0.0024 -0.0003 2E-05 -5E-07

[0215] Sixth example

[0216] Figure 11 This is a view showing the sixth example of an optical imaging system, and Figure 12 Show Figure 11 Aberration curves of optical imaging systems.

[0217] 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.

[0218] The first lens 1006 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2006 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3006 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4006 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5006 has negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6006 has positive refractive power, a convex object-side surface, and a convex image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the sixth lens 6006. The seventh lens 7006 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the seventh lens 7006.

[0219] The optical imaging system 6 also includes an aperture stop, a filter 8006, and an image sensor 9006. The aperture stop is positioned 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 positioned between the seventh lens 7006 and the image sensor 9006 to block infrared light. The image sensor 9006 forms an imaging surface on which an image of the target is formed. Although not in... Figure 11 As shown, however, the aperture stop is set at a distance of 0.675 mm from the object side of the first lens 1006 toward the image side of the optical imaging system 6. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 6 listed in Table 47, which will be presented later in this application.

[0220] Table 11 below shows the construction Figure 11 The physical characteristics of the lenses and other components of the optical imaging system 6 are shown in Table 12 below. Figure 11 The aspherical coefficient of the lens.

[0221] Table 11

[0222]

[0223]

[0224] Table 12

[0225] K A B C D E F G H J S1 -0.7789 0.0158 0.0244 -0.0393 0.0357 0.0042 -0.0324 0.0222 -0.0051 0 S2 47.441 -0.0594 0.1276 -0.1968 0.2414 -0.2248 0.1343 -0.0437 0.0056 0 S3 1.5303 -0.1427 0.262 -0.2575 0.0999 0.0847 -0.1268 0.0638 -0.0121 0 S4 -0.5218 -0.0893 0.1152 0.2315 -1.0487 1.8371 -1.7096 0.8384 -0.1681 0 S5 0 -0.0664 0.0267 -0.0848 0.11 -0.1037 0.0508 -0.0058 -0.0011 0 S6 0 -0.098 0.0295 0.0073 -0.1441 0.2445 -0.2359 0.1222 -0.0253 0 S7 25.638 -0.1292 -0.1525 0.3312 -0.5486 0.6951 -0.5835 0.2684 -0.0499 0 S8 -99 0.0154 -0.3791 0.5384 -0.6761 0.7145 -0.4636 0.1557 -0.0206 0 S9 -70.99 -0.0737 0.2143 -0.6477 0.79 -0.4841 0.1565 -0.0253 0.0016 0 S10 1.4784 0.1155 -0.1988 0.1214 -0.0392 0.0079 -0.0011 0.0001 -5E-06 0 S11 -99 0.112 -0.1646 0.1114 -0.0519 0.0148 -0.0024 0.0002 -7E-06 0 S12 -3.0236 0.1148 -0.1161 0.0628 -0.0227 0.0055 -0.0008 7E-05 -2E-06 0 S13 -2.6326 -0.0907 -0.0446 0.0634 -0.0255 0.0054 -0.0006 4E-05 -1E-06 0 S14 -1.0849 -0.259 0.1596 -0.0758 0.0264 -0.0064 0.001 -0.0001 6E-06 -2E-07

[0226] Seventh Example

[0227] Figure 13 This is a view showing the seventh example of an optical imaging system, and Figure 14 It shows Figure 13 Aberration curves of optical imaging systems.

[0228] 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.

[0229] The first lens 1007 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2007 has positive refractive power, a convex object-side surface, and a convex image-side surface. The third lens 3007 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4007 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5007 has positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6007 has negative refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6007. The seventh lens 7007 has negative refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7007.

[0230] The optical imaging system 7 also includes an aperture stop, a filter 8007, and an image sensor 9007. The aperture stop is positioned between the second lens 2007 and the third lens 3007 to adjust the amount of light incident on the image sensor 9007. The filter 8007 is positioned between the seventh lens 7007 and the image sensor 9007 to block infrared light. The image sensor 9007 forms an imaging surface on which an image of the target is formed. Although not in... Figure 13As shown, however, the aperture stop is set at a distance of 1.158 mm from the object side of the first lens 1007 toward the image side of the optical imaging system 7. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 7 listed in Table 47, which will be presented later in this application.

[0231] Table 13 below shows the construction Figure 13 The physical characteristics of the lenses and other components of the optical imaging system 7 are shown in Table 14 below. Figure 13 The aspherical coefficient of the lens.

[0232] Table 13

[0233]

[0234] Table 14

[0235] 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

[0236] Eighth Example

[0237] Figure 15 This is a view showing the eighth example of an optical imaging system, and Figure 16 Show Figure 15 Aberration curves of optical imaging systems.

[0238] 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.

[0239] The first lens 1008 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2008 has positive refractive power, a convex object-side surface, and a convex image-side surface. The third lens 3008 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4008 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5008 has positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6008 has negative refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6008. The seventh lens 7008 has negative refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7008.

[0240] The optical imaging system 8 also includes an aperture stop, a filter 8008, and an image sensor 9008. The aperture stop is positioned between the second lens 2008 and the third lens 3008 to adjust the amount of light incident on the image sensor 9008. The filter 8008 is positioned between the seventh lens 7008 and the image sensor 9008 to block infrared light. The image sensor 9008 forms an imaging surface on which an image of the target is formed. Although not in... Figure 15 As shown, however, the aperture stop is set at a distance of 1.179 mm from the object side of the first lens 1008 toward the image side of the optical imaging system 8. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 8 listed in Table 47, which will be presented later in this application.

[0241] Table 15 below shows the construction Figure 15 The physical characteristics of the lenses and other components of the optical imaging system 8 are shown in Table 16 below. Figure 15 The aspherical coefficient of the lens.

[0242] Table 15

[0243]

[0244] Table 16

[0245]

[0246]

[0247] Ninth Example

[0248] Figure 17 This is a view showing the ninth example of an optical imaging system, and Figure 18 Show Figure 17 Aberration curves of optical imaging systems.

[0249] 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.

[0250] The first lens 1009 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2009 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3009 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4009 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5009 has negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6009 has positive refractive power, a convex object-side surface, and a convex image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the sixth lens 6009. The seventh lens 7009 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the seventh lens 7009.

[0251] The optical imaging system 9 also includes an aperture stop, a filter 8009, and an image sensor 9009. The aperture stop is positioned 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 positioned between the seventh lens 7009 and the image sensor 9009 to block infrared light. The image sensor 9009 forms an imaging surface on which an image of the target is formed. Although not in... Figure 17 As shown, however, the aperture stop is set at a distance of 0.683 mm from the object side of the first lens 1009 toward the image side of the optical imaging system 9. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 9 listed in Table 47, which will be presented later in this application.

[0252] Table 17 below shows the construction Figure 17 The physical characteristics of the lenses and other components of the optical imaging system 9 are shown in Table 18 below. Figure 17 The aspherical coefficient of the lens.

[0253] Table 17

[0254]

[0255] Table 18

[0256]

[0257]

[0258] Tenth example

[0259] Figure 19 This is a view showing the tenth example of an optical imaging system, and Figure 20 It shows Figure 19 Aberration curves of optical imaging systems.

[0260] 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.

[0261] The first lens 1010 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2010 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3010 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4010 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5010 has negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6010 has negative refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6010. The seventh lens 7010 has negative refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7010.

[0262] The optical imaging system 10 also includes an aperture stop ST, a filter 8010, and an image sensor 9010. The aperture stop ST 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 radiation. The image sensor 9010 forms an imaging surface on which an image of the target is formed. The aperture stop ST is disposed at a distance of 0.250 mm from the object-side surface of the first lens 1010 towards the image-side of the optical imaging system 10. This distance is equal to the TTL-SL and can be calculated from the TTL and SL values ​​of Example 10 listed in Table 47, which will be presented later in this application.

[0263] Table 19 below shows the construction Figure 19 The physical characteristics of the lenses and other components of the optical imaging system 10 are shown in Table 20 below. Figure 19 The aspherical coefficient of the lens.

[0264] Table 19

[0265]

[0266]

[0267] Table 20

[0268] 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

[0269] Eleventh Example

[0270] Figure 21This is a view showing an eleventh example of an optical imaging system, and Figure 22 It shows Figure 21 Aberration curves of optical imaging systems.

[0271] 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.

[0272] The first lens 1011 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2011 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3011 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4011 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5011 has positive refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6011 has positive refractive power, a convex object-side surface, and a convex image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6011. The seventh lens 7011 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7011.

[0273] The optical imaging system 11 also includes an aperture stop, a filter 8011, and an image sensor 9011. The aperture stop is positioned 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 positioned between the seventh lens 7011 and the image sensor 9011 to block infrared light. The image sensor 9011 forms an imaging surface on which an image of the target is formed. Although not in... Figure 21 As shown, however, the aperture stop is set at a distance of 0.768 mm from the object side of the first lens 1011 toward the image side of the optical imaging system 11. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 11 listed in Table 47, which will be presented later in this application.

[0274] Table 21 below shows the construction Figure 21 The physical characteristics of the lenses and other components of the optical imaging system 11 are shown in Table 22 below. Figure 21 The aspherical coefficient of the lens.

[0275] Table 21

[0276]

[0277]

[0278] Table 22

[0279] K A B C D E F G H J S1 -0.8127 0.0142 0.0092 -0.0157 0.0206 -0.0137 0.0037 0.0003 -0.0003 0 S2 5.6538 -0.0472 0.0448 -0.0321 0.0158 -0.0059 0.001 0.0004 -0.0002 0 S3 -10.668 -0.0824 0.0792 -0.0266 -0.0158 0.0274 -0.0153 0.0039 -0.0004 0 S4 -0.1737 -0.0508 0.0303 0.1129 -0.3063 0.4131 -0.3101 0.1243 -0.0205 0 S5 0 -0.0377 0.0156 -0.0597 0.0773 -0.0624 0.0268 -0.0045 3E-05 0 S6 0 -0.0706 0.0482 -0.0575 -0.0009 0.0419 -0.0392 0.0166 -0.0028 0 S7 46.114 -0.1374 0.0451 0.0051 -0.0298 0.0052 0.0076 -0.0027 0.0001 0 S8 99 -0.1096 -0.0451 0.1394 -0.1519 0.0948 -0.0333 0.006 -0.0004 0 S9 -99 -0.0865 0.1152 -0.1605 0.1182 -0.0466 0.0099 -0.0011 5E-05 0 S10 -0.2245 0.0593 -0.0542 0.0004 0.0119 -0.0044 0.0007 -5E-05 1E-06 0 S11 -99 0.1031 -0.1094 0.0579 -0.0216 0.005 -0.0007 4E-05 -1E-06 0 S12 -4.7232 0.1521 -0.1221 0.0592 -0.0202 0.0046 -0.0007 5E-05 -2E-06 0 S13 -1.1986 -0.0323 -0.0724 0.0507 -0.0141 0.0021 -0.0002 8E-06 -2E-07 0 S14 -1.2644 -0.1675 0.0662 -0.0204 0.0047 -0.0007 8E-05 -5E-06 2E-07 -2E-09

[0280] Twelfth Example

[0281] Figure 23 This is a view showing the twelfth example of an optical imaging system, and Figure 24 It shows Figure 23 Aberration curves of optical imaging systems.

[0282] 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.

[0283] The first lens 1012 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2012 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3012 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4012 has positive refractive power, a convex object-side surface, and a convex image-side surface. The fifth lens 5012 has negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6012 has positive refractive power, a convex object-side surface, and a convex image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6012. The seventh lens 7012 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7012.

[0284] The optical imaging system 12 also includes an aperture stop, a filter 8012, and an image sensor 9012. The aperture stop is positioned between the first lens 1012 and the second lens 2012 to adjust the amount of light incident on the image sensor 9012. The filter 8012 is positioned between the seventh lens 7012 and the image sensor 9012 to block infrared light. The image sensor 9012 forms an imaging surface on which an image of the target is formed. Although not in... Figure 23 As shown, however, the aperture stop is positioned at a distance of 0.62 mm from the object side of the first lens 1012 toward the image side of the optical imaging system 12. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 12 listed in Table 47, which will be presented later in this application.

[0285] Table 23 below shows the construction Figure 23 The physical characteristics of the lenses and other components of the optical imaging system 12 are shown in Table 24 below. Figure 23 The aspherical coefficient of the lens.

[0286] Table 23

[0287]

[0288]

[0289] Table 24

[0290] 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

[0291] Thirteenth Example

[0292] Figure 25 This is a view illustrating a thirteenth example of an optical imaging system, and Figure 26 It shows Figure 25 Aberration curves of optical imaging systems.

[0293] 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.

[0294] The first lens 1013 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2013 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3013 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4013 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5013 has positive refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6013 has positive refractive power, a convex object-side surface, and a convex image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6013. The seventh lens 7013 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7013.

[0295] The optical imaging system 13 also includes an aperture stop, a filter 8013, and an image sensor 9013. The aperture stop is positioned between the first lens 1013 and the second lens 2013 to adjust the amount of light incident on the image sensor 9013. The filter 8013 is positioned between the seventh lens 7013 and the image sensor 9013 to block infrared light. The image sensor 9013 forms an imaging surface on which an image of the target is formed. Although not in... Figure 25 As shown, however, the aperture stop is set at a distance of 0.641 mm from the object side of the first lens 1013 toward the image side of the optical imaging system 13. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 13 listed in Table 47, which will be presented later in this application.

[0296] Table 25 below shows the construction Figure 25The physical characteristics of the lenses and other components of the optical imaging system 13 are shown in Table 26 below. Figure 25 The aspherical coefficient of the lens.

[0297] Table 25

[0298]

[0299] Table 26

[0300]

[0301]

[0302] Fourteenth Example

[0303] Figure 27 This is a view showing the fourteenth example of an optical imaging system, and Figure 28 It shows Figure 27 Aberration curves of optical imaging systems.

[0304] 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.

[0305] The first lens 1014 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2014 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3014 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4014 has positive refractive power, a convex object-side surface, and a convex image-side surface. The fifth lens 5014 has negative refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6014 has negative refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6014. The seventh lens 7014 has negative refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7014.

[0306] The optical imaging system 14 also includes an aperture stop, a filter 8014, and an image sensor 9014. The aperture stop is positioned 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 positioned between the seventh lens 7014 and the image sensor 9014 to block infrared light. The image sensor 9014 forms an imaging surface on which an image of the target is formed. Although not in... Figure 27As shown, however, the aperture stop is set at a distance of 1.070 mm from the object side of the first lens 1014 toward the image side of the optical imaging system 14. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 14 listed in Table 47, which will be presented later in this application.

[0307] Table 27 below shows the construction Figure 27 The physical characteristics of the lenses and other components of the optical imaging system 14 are shown in Table 28 below. Figure 27 The aspherical coefficient of the lens.

[0308] Table 27

[0309]

[0310] Table 28

[0311]

[0312]

[0313] Example 15

[0314] Figure 29 This is a view showing the fifteenth example of an optical imaging system, and Figure 30 Show Figure 29 Aberration curves of optical imaging systems.

[0315] 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.

[0316] The first lens 1015 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2015 has positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3015 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4015 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5015 has positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6015 has positive refractive power, a convex object-side surface, and a convex image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6015. The seventh lens 7015 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7015.

[0317] The optical imaging system 15 also includes an aperture stop, a filter 8015, and an image sensor 9015. The aperture stop is positioned 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 positioned between the seventh lens 7015 and the image sensor 9015 to block infrared light. The image sensor 9015 forms an imaging surface on which an image of the target is formed. Although not in... Figure 29 As shown, however, the aperture stop is set at a distance of 1.002 mm from the object side of the first lens 1015 toward the image side of the optical imaging system 15. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 15 listed in Table 47, which will be presented later in this application.

[0318] Table 29 below shows the construction Figure 29 The physical characteristics of the lenses and other components of the optical imaging system 15 are shown in Table 30 below. Figure 29 The aspherical coefficient of the lens.

[0319] Table 29

[0320]

[0321] Table 30

[0322] K A B C D E F G H S1 -1.5984 0.022 0.0011 -0.0095 0.0071 -0.0076 0.0028 -0.0002 0 S2 0 -0.0267 -0.08 0.1204 -0.1085 0.0777 -0.0361 0.0074 0 S3 0 0.0185 -0.0944 0.1151 -0.0877 0.0713 -0.0433 0.0104 0 S4 93.032 -0.0833 0.3002 -0.6564 0.7873 -0.5697 0.2292 -0.0392 0 S5 -11.518 -0.2115 0.4874 -0.8074 0.9509 -0.7204 0.3239 -0.0644 0 S6 -4.4222 -0.0999 0.1985 -0.0999 -0.0975 0.2773 -0.2246 0.0743 0 S7 0 -0.0315 -0.1501 0.4497 -1.0958 1.4445 -1.0093 0.2957 0 S8 0 -0.1532 -0.084 0.3675 -0.5986 0.475 -0.1986 0.0366 0 S9 -76.367 -0.2472 -0.1038 0.5308 -0.6528 0.4225 -0.1503 0.0226 0 S10 0 -0.1927 -0.1015 0.3168 -0.3163 0.1912 -0.0703 0.0115 0 S11 0 0.0245 -0.0539 -0.0674 0.1082 -0.0625 0.0168 -0.0017 0 S12 -1.5099 0.2023 -0.1451 0.0004 0.0431 -0.0194 0.0035 -0.0002 0 S13 -6.0002 0.009 -0.1914 0.1596 -0.0593 0.0123 -0.0015 1E-04 -3E-06 S14 -0.8696 -0.1901 0.0765 -0.0229 0.0049 -0.0008 9E-05 -6E-06 2E-07

[0323] Sixteenth Example

[0324] Figure 31 This is a view showing the sixteenth example of an optical imaging system, and Figure 32 It shows Figure 31 Aberration curves of optical imaging systems.

[0325] 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.

[0326] The first lens 1016 has negative refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2016 has positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3016 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4016 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5016 has positive refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6016 has positive refractive power, a convex object-side surface, and a convex image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6016. The seventh lens 7016 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7016.

[0327] The optical imaging system 16 also includes an aperture stop, a filter 8016, and an image sensor 9016. The aperture stop is positioned between the first lens 1016 and the second lens 2016 to adjust the amount of light incident on the image sensor 9016. The filter 8016 is positioned between the seventh lens 7016 and the image sensor 9016 to block infrared light. The image sensor 9016 forms an imaging surface on which an image of the target is formed. Although not in... Figure 31 As shown, however, the aperture stop is set at a distance of 0.374 mm from the object side of the first lens 1016 toward the image side of the optical imaging system 16. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 16 listed in Table 47, which will be presented later in this application.

[0328] Table 31 below shows the construction Figure 31 The physical characteristics of the lenses and other components of the optical imaging system 16 are shown in Table 32 below. Figure 31 The aspherical coefficient of the lens.

[0329] Table 31

[0330]

[0331]

[0332] Table 32

[0333] K A B C D E F G H S1 -3.7488 0.0012 -0.0066 -0.0004 -0.0198 0.0252 -0.0132 0.0034 -0.0004 S2 -7.1577 -0.061 -0.0104 0.0163 0.0115 -0.0163 0.0063 -0.0009 0 S3 -2.6408 -0.0742 0.0698 -0.0582 0.0727 -0.0412 0.0034 0.0048 -0.0013 S4 -99 -0.0752 0.197 -0.3925 0.5174 -0.4377 0.2286 -0.0663 0.008 S5 0 -0.1076 0.2644 -0.4642 0.6109 -0.5485 0.3128 -0.0997 0.0134 S6 4.364 -0.0584 0.0882 -0.068 -0.0405 0.1629 -0.1817 0.0962 -0.0201 S7 0 -0.0603 0.0743 -0.2389 0.4197 -0.4882 0.353 -0.1472 0.0274 S8 0 -0.1174 0.165 -0.2983 0.348 -0.2864 0.1556 -0.0507 0.0077 S9 -15.429 -0.0562 0.0005 0.0397 -0.0576 0.0355 -0.0117 0.0015 3E-05 S10 -9.1654 -0.1003 0.0623 -0.0379 0.0141 -0.0032 5E-05 0.0002 -3E-05 S11 0 -0.001 -0.0216 0.0157 -0.0111 0.0043 -0.0009 8E-05 -3E-06 S12 -1.7327 0.1074 -0.0935 0.0649 -0.0289 0.0078 -0.0012 0.0001 -4E-06 S13 0.6082 -0.1509 0.0462 0.0036 -0.0043 0.001 -0.0001 6E-06 -2E-07 S14 -8.5925 -0.0951 0.041 -0.0124 0.0026 -0.0004 4E-05 -2E-06 4E-08

[0334] Example 17

[0335] Figure 33 This is a view showing the seventeenth example of an optical imaging system, and Figure 34 It shows Figure 33 Aberration curves of optical imaging systems.

[0336] 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.

[0337] The first lens 1017 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2017 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3017 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4017 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5017 has negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6017 has positive refractive power, a convex object-side surface, and a convex image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the sixth lens 6017. The seventh lens 7017 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the seventh lens 7017.

[0338] The optical imaging system 17 also includes an aperture stop, a filter 8017, and an image sensor 9017. The aperture stop is positioned 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 positioned between the seventh lens 7017 and the image sensor 9017 to block infrared light. The image sensor 9017 forms an imaging surface on which an image of the target is formed. Although not in... Figure 33 As shown, however, the aperture stop is set at a distance of 0.920 mm from the object side of the first lens 1017 toward the image side of the optical imaging system 17. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 17 listed in Table 47, which will be presented later in this application.

[0339] Table 33 below shows the construction Figure 33 The physical characteristics of the lenses and other components of the optical imaging system 17 are shown in Table 34 below. Figure 33 The aspherical coefficient of the lens.

[0340] Table 33

[0341]

[0342]

[0343] Table 34

[0344] K A B C D E F G H J S1 -1.1385 0.0141 0.023 -0.0501 0.0713 -0.0603 0.0298 -0.0079 0.0009 0 S2 12.673 -0.0899 0.0792 -0.0381 -0.0163 0.0343 -0.0229 0.0077 -0.0011 0 S3 9.9647 -0.1473 0.1118 0.0661 -0.2646 0.2998 -0.1775 0.0556 -0.0072 0 S4 -0.5888 -0.076 0.0676 0.0602 -0.1804 0.1698 -0.0679 0.0057 0.0025 0 S5 0 -0.0278 0.0424 -0.1578 0.2776 -0.3017 0.1871 -0.0609 0.0081 0 S6 -99 -0.0505 0.0344 -0.0587 0.0428 0.0016 -0.0357 0.0253 -0.0056 0 S7 0 -0.138 0.0096 0.0579 -0.2108 0.3235 -0.2566 0.1009 -0.0155 0 S8 0 -0.1363 0.1001 -0.1765 0.2075 -0.1546 0.071 -0.0193 0.0025 0 S9 0 -0.2113 0.2288 -0.2271 0.1631 -0.0851 0.0308 -0.0071 0.0008 0 S10 -62.082 -0.1439 0.0555 -0.0007 -0.029 0.0245 -0.009 0.0016 -0.0001 0 S11 -21.515 0.0047 -0.0144 0.0029 -0.0019 0.0006 -8E-05 1E-06 2E-07 0 S12 -3.7544 0.1035 -0.0491 0.0125 -0.0024 0.0003 -2E-05 -3E-07 9E-08 0 S13 -11.142 -0.0315 -0.0345 0.0239 -0.0062 0.0009 -7E-05 3E-06 -5E-08 0 S14 -1.2542 -0.091 0.025 -0.0054 0.0009 -0.0001 1E-05 -1E-06 6E-08 -1E-09

[0345] Example 18

[0346] Figure 35 This is a view showing the eighteenth example of an optical imaging system, and Figure 36 It shows Figure 35 Aberration curves of optical imaging systems.

[0347] 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.

[0348] The first lens 1018 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2018 has positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3018 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4018 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5018 has negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6018 has positive refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6018. The seventh lens 7018 has positive refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7018.

[0349] The optical imaging system 18 also includes an aperture stop, a filter 8018, and an image sensor 9018. The aperture stop is positioned between the second lens 2018 and the third lens 3018 to adjust the amount of light incident on the image sensor 9018. The filter 8018 is positioned between the seventh lens 7018 and the image sensor 9018 to block infrared light. The image sensor 9018 forms an imaging surface on which an image of the target is formed. Although not in... Figure 35 As shown, however, the aperture stop is set at a distance of 1.082 mm from the object side of the first lens 1018 toward the image side of the optical imaging system 18. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 18 listed in Table 47, which will be presented later in this application.

[0350] Table 35 below shows the construction Figure 35 The physical characteristics of the lenses and other components of the optical imaging system 18 are shown in Table 36 below. Figure 35 The aspherical coefficient of the lens.

[0351] Table 35

[0352]

[0353] Table 36

[0354] K A B C D E F G H J S1 -0.9157 -0.0242 0.0483 -0.0925 0.0385 0.0577 -0.0925 0.0579 -0.0178 0.0022 S2 -12.376 0.0627 -0.1415 -0.3392 0.8991 -0.7358 0.1834 0.0755 -0.0533 0.0088 S3 -0.8319 0.031 -0.03 -0.6522 1.4923 -1.3976 0.6352 -0.1105 -0.0112 0.0048 S4 -7.367 -0.1852 1.7179 -6.8471 14.821 -19.261 15.464 -7.5184 2.0307 -0.2341 S5 12.337 -0.2536 1.7489 -6.6898 14.646 -19.491 16.071 -8.0307 2.2327 -0.2657 S6 1.1454 -0.0901 0.2168 -0.6218 1.4502 -2.2709 2.2634 -1.3948 0.4895 -0.0747 S7 -12.034 0.0424 -0.6838 2.5289 -5.5859 7.6559 -6.5535 3.3828 -0.9545 0.1124 S8 5.8592 -0.0168 -0.1532 0.4479 -0.9325 1.2364 -1.0356 0.5306 -0.1517 0.0187 S9 -43.521 0.0196 0.0447 -0.1445 0.1741 -0.1293 0.0589 -0.0164 0.0026 -0.0002 S10 -9.9703 -0.0233 -0.0527 0.0821 -0.0601 0.0246 -0.0062 0.001 -9E-05 4E-06 S11 -16.199 0.1383 -0.3024 0.3056 -0.2185 0.1017 -0.0304 0.0057 -0.0006 3E-05 S12 0.0118 -0.0979 0.0662 -0.0617 0.0337 -0.0119 0.0028 -0.0004 3E-05 -1E-06 S13 -0.8414 -0.3646 0.1533 -0.0353 0.0033 0.0004 -0.0001 2E-05 -8E-07 1E-08 S14 -1.4251 -0.2584 0.1351 -0.0538 0.0161 -0.0034 0.0005 -4E-05 2E-06 -4E-08

[0355] Example 19

[0356] Figure 37 This is a view illustrating the nineteenth example of an optical imaging system, and Figure 38 It shows Figure 37 Aberration curves of optical imaging systems.

[0357] 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.

[0358] The first lens 1019 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2019 has positive refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3019 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4019 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5019 has negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6019 has positive refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the sixth lens 6019. The seventh lens 7019 has negative refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the seventh lens 7019.

[0359] The optical imaging system 19 also includes an aperture stop, a filter 8019, and an image sensor 9019. The aperture stop is positioned between the second lens 2019 and the third lens 3019 to adjust the amount of light incident on the image sensor 9019. The filter 8019 is positioned between the seventh lens 7019 and the image sensor 9019 to block infrared light. The image sensor 9019 forms an imaging surface on which an image of the target is formed. Although not in... Figure 37 As shown, however, the aperture stop is positioned at a distance of 1.201 mm from the object side of the first lens 1019 toward the image side of the optical imaging system 19. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 19 listed in Table 47, which will be presented later in this application.

[0360] Table 37 below shows the construction Figure 37 The physical characteristics of the lenses and other components of the optical imaging system 19 are shown in Table 38 below. Figure 37 The aspherical coefficient of the lens.

[0361] Table 37

[0362]

[0363] Table 38

[0364]

[0365]

[0366] Example 20

[0367] Figure 39 This is a view showing the twentieth example of an optical imaging system, and Figure 40 It shows Figure 39 Aberration curves of optical imaging systems.

[0368] 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.

[0369] The first lens 1020 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2020 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3020 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fourth lens 4020 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5020 has negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6020 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6020. The seventh lens 7020 has positive refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7020.

[0370] The optical imaging system 20 also includes an aperture stop, a filter 8020, and an image sensor 9020. The aperture stop is positioned between the second lens 2020 and the third lens 3020 to adjust the amount of light incident on the image sensor 9020. The filter 8020 is positioned between the seventh lens 7020 and the image sensor 9020 to block infrared light. The image sensor 9020 forms an imaging surface on which an image of the target is formed. Although not in... Figure 39 As shown, however, the aperture stop is set at a distance of 0.963 mm from the object side of the first lens 1020 toward the image side of the optical imaging system 20. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 20 listed in Table 47, which will be presented later in this application.

[0371] Table 39 below shows the construction Figure 39 The physical characteristics of the lenses and other components of the optical imaging system 20 are shown in Table 40 below. Figure 39The aspherical coefficient of the lens.

[0372] Table 39

[0373]

[0374] Table 40

[0375]

[0376]

[0377] Example 21

[0378] Figure 41 This is a view showing the twenty-first example of an optical imaging system, and Figure 42 It shows Figure 41 Aberration curves of optical imaging systems.

[0379] 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.

[0380] The first lens 1021 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2021 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3021 has positive refractive power, a concave object-side surface, and a convex image-side surface. The fourth lens 4021 has negative refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5021 has positive refractive power, a concave object-side surface, and a convex image-side surface. The sixth lens 6021 has positive refractive power, a concave object-side surface, and a convex image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the sixth lens 6021. The seventh lens 7021 has negative refractive power, a concave object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the seventh lens 7021.

[0381] The optical imaging system 21 also includes an aperture stop, a filter 8021, and an image sensor 9021. The aperture stop is positioned 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 positioned between the seventh lens 7021 and the image sensor 9021 to block infrared light. The image sensor 9021 forms an imaging surface on which an image of the target is formed. Although not in... Figure 41As shown, however, the aperture stop is set at a distance of 0.872 mm from the object side of the first lens 1021 toward the image side of the optical imaging system 21. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 21 listed in Table 47, which will be presented later in this application.

[0382] Table 41 below shows the construction Figure 41 The physical characteristics of the lenses and other components of the optical imaging system 21 are shown in Table 42 below. Figure 41 The aspherical coefficient of the lens.

[0383] Table 41

[0384]

[0385]

[0386] Table 42

[0387] 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 -0.0791 0.0141 0 S2 -1.5097 -0.1275 0.3975 -0.6982 0.6801 -0.322 0.0288 0.029 -0.0076 0 S3 6.0294 -0.163 0.4504 -0.8514 1.0525 -0.8203 0.4235 -0.138 0.0213 0 S4 -0.8846 -0.0449 0.0393 0.1574 -0.6934 1.3171 -1.3069 0.6799 -0.143 0 S5 0 -0.0513 -0.0193 -0.016 0.0043 0.0034 -0.0155 0.0319 -0.0128 0 S6 0 -0.1089 -0.0569 0.3576 -0.9255 1.1947 -0.8604 0.3322 -0.0547 0 S7 -7.5 -0.2139 -0.0107 0.1788 -0.1827 -0.1159 0.3046 -0.1897 0.0405 0 S8 -43.341 -0.1402 -0.061 0.2777 -0.4123 0.3523 -0.1857 0.0564 -0.0071 0 S9 -35.081 -0.0602 0.0736 -0.1046 0.1084 -0.0726 0.0255 -0.0041 0.0002 0 S10 -1.5734 0.1621 -0.2197 0.1896 -0.107 0.0396 -0.0091 0.0011 -6E-05 0 S11 0.5153 0.2137 -0.3167 0.2399 -0.1217 0.0384 -0.0069 0.0007 -3E-05 0 S12 -1.1466 0.1967 -0.2565 0.1542 -0.0532 0.0115 -0.0015 0.0001 -4E-06 0 S13 -0.9056 -0.0077 -0.2094 0.1883 -0.0749 0.0167 -0.0022 0.0002 -5E-06 0 S14 -1.2797 -0.2192 0.1006 -0.0338 0.0088 -0.0018 0.0003 -2E-05 1E-06 -3E-08

[0388] Example 22

[0389] Figure 43 This is a view showing the twenty-second example of an optical imaging system, and Figure 44 It shows Figure 43 Aberration curves of optical imaging systems.

[0390] 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.

[0391] The first lens 1022 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2022 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3022 has positive refractive power, a concave object-side surface, and a convex image-side surface. The fourth lens 4022 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5022 has negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6022 has positive refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the sixth lens 6022. The seventh lens 7022 has positive refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side surface and the image-side surface of the seventh lens 7022.

[0392] The optical imaging system 22 also includes an aperture stop, a filter 8022, and an image sensor 9022. The aperture stop is positioned 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 positioned between the seventh lens 7022 and the image sensor 9022 to block infrared light. The image sensor 9022 forms an imaging surface on which an image of the target is formed. Although not in... Figure 43 As shown, however, the aperture stop is set at a distance of 0.866 mm from the object side of the first lens 1022 toward the image side of the optical imaging system 22. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 22 listed in Table 47, which will be presented later in this application.

[0393] Table 43 below shows the construction Figure 43 The physical characteristics of the lenses and other components of the optical imaging system 22 are shown in Table 44 below. Figure 43 The aspherical coefficient of the lens.

[0394] Table 43

[0395]

[0396]

[0397] Table 44

[0398] 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

[0399] Example 23

[0400] Figure 45 This is a view showing the twenty-third example of an optical imaging system, and Figure 46 It shows Figure 45 Aberration curves of optical imaging systems.

[0401] 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.

[0402] The first lens 1023 has positive refractive power, a convex object-side surface, and a concave image-side surface. The second lens 2023 has negative refractive power, a convex object-side surface, and a concave image-side surface. The third lens 3023 has positive refractive power, a concave object-side surface, and a convex image-side surface. The fourth lens 4023 has positive refractive power, a convex object-side surface, and a concave image-side surface. The fifth lens 5023 has negative refractive power, a convex object-side surface, and a concave image-side surface. The sixth lens 6023 has positive refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the sixth lens 6023. The seventh lens 7023 has positive refractive power, a convex object-side surface, and a concave image-side surface. Furthermore, at least one inflection point is formed on any one or both surfaces of the object-side and image-side surfaces of the seventh lens 7023.

[0403] The optical imaging system 23 also includes an aperture stop, a filter 8023, and an image sensor 9023. The aperture stop is positioned 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 positioned between the seventh lens 7023 and the image sensor 9023 to block infrared light. The image sensor 9023 forms an imaging surface on which an image of the target is formed. Although not in... Figure 45 As shown, however, the aperture stop is set at a distance of 0.904 mm from the object side of the first lens 1023 toward the image side of the optical imaging system 23. This distance is equal to TTL-SL and can be calculated from the TTL and SL values ​​of Example 23 listed in Table 47, which will be presented later in this application.

[0404] Table 45 below shows the construction Figure 45 The physical characteristics of the lenses and other components of the optical imaging system 23 are shown in Table 46 below. Figure 45 The aspherical coefficient of the lens.

[0405] Table 45

[0406]

[0407] Table 46

[0408] 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

[0409] Table 47 below shows the total focal length f, the total length TTL (distance from the object side of the first lens to the imaging plane), the distance SL from the aperture stop to the imaging plane, the f-number (F No.) (the total focal length f divided by the entrance pupil diameter, where both f and entrance pupil diameter are expressed in mm), the image height on the imaging plane (IMG HT) (half the diagonal length of the imaging plane), and the field of view (FOV) of the optical imaging system for each of the examples 1 to 23 described in this application. The values ​​of f, TTL, SL, and IMG HT are expressed in mm. The value of F No. is dimensionless. The value of FOV is expressed in degrees.

[0410] Table 47

[0411]

[0412]

[0413] Table 48 below shows the focal lengths (in mm) of the first lens f1, the second lens f2, the third lens f3, the fourth lens f4, the fifth lens f5, the sixth lens f6, and the seventh lens f7 of each of the examples 1 to 23 described in this application.

[0414] Table 48

[0415]

[0416]

[0417] Table 49 below shows the edge thicknesses (L1edge T) of the first lens, the second lens (L2edge T), the third lens (L3edge T), the fourth lens (L4edge T), the fifth lens (L5edge T), the sixth lens (L6edge T), and the seventh lens (L7edge T) of each of the examples 1 to 23 described in this application (in mm).

[0418] Table 49

[0419]

[0420]

[0421] Table 50 below shows the sag value (L5S1 sag) of the object side of the fifth lens, the sag value (L5S2 sag) of the image side of the fifth lens, the thickness (Yc71P1) of the seventh lens at the first inflection point on the object side of the seventh lens, the thickness (Yc71P2) of the seventh lens at the second inflection point on the object side of the seventh lens, the thickness (Yc72P1) of the seventh lens at the first inflection point on the image side of the seventh lens, and the thickness (Yc72P2) of the seventh lens at the second inflection point on the image side of the seventh lens (in mm) for each of the examples 1 to 23 described in this application.

[0422] Table 50

[0423] Example L5S1 sag L5S2 sag Yc71P1 Yc71P2 Yc72P1 Yc72P2 1 -0.3152 -0.3573 1.0890 0.9010 2 0.1533 0.1807 0.6100 0.7120 0.7190 3 0.2004 0.2021 0.5680 0.6700 0.6670 4 0.1154 0.1393 0.9300 0.8110 5 -0.4658 -0.5261 2.9330 4.1420 6 -0.4390 -0.5099 3.0860 4.4170 7 0.2103 0.2454 0.5690 0.6410 0.6700 8 0.2020 0.1770 0.6030 0.7040 0.7170 9 -0.4754 -0.4885 0.9050 1.0990 10 -0.2605 -0.2625 0.4730 0.6310 11 -0.4988 -0.4775 0.8060 0.7710 12 -0.4848 -0.4070 0.8900 0.9200 13 -0.4791 -0.4221 0.7810 14 -0.4400 -0.4300 0.7200 0.1200 15 -0.3007 -0.5280 0.8493 0.7180 16 0.2023 0.2006 0.9670 0.5350 0.9040 17 0.3338 0.3783 0.7190 0.4020 0.8450 18 0.2100 0.3724 0.6100 0.7060 0.7220 19 0.1992 0.2689 0.6030 0.7970 20 0.2698 0.2857 0.8890 1.0150 21 0.2760 0.5093 0.9680 22 0.0918 0.1026 0.9550 1.1030 1.1280 23 0.1793 0.1731 0.9640 1.1140 1.1300

[0424] Table 51 below shows the inner diameter (in mm) of each of the first to seventh spacers in each of Examples 1 to 23 described in this application. SP1 is the inner diameter of the first spacer, SP2 is the inner diameter of the second spacer, SP3 is the inner diameter of the third spacer, SP4 is the inner diameter of the fourth spacer, SP5 is the inner diameter of the fifth spacer, SP6 is the inner diameter of the sixth spacer, and SP7 is the inner diameter of the seventh spacer.

[0425] Table 51

[0426] Example SP1 SP2 SP3 SP4 SP5 SP6 SP7 1 2.52 2.2 2.47 2.93 3.64 5.33 2 1.33 1.22 1.2 1.58 2.05 2.69 3 1.24 1.15 1.03 1.48 1.9 2.46 4 1.34 1.23 1.03 1.5 1.98 2.66 5 2.31 2.16 2.54 2.94 4.06 4.84 5.12 6 2.44 2.21 2.56 2.87 4.11 4.8 5.14 7 2.58 2.4 2.49 2.97 4.16 4.89 5.51 8 2.49 2.31 2.41 3.02 4.11 4.93 5.6 9 2.28 2.266 2.542 3.062 3.778 5.388 10 2.12 2.1 2.04 2.12 2.81 4.64 11 2.43 2.48 2.89 3.38 4.57 6.18 12 2.32 2.36 2.56 2.93 3.7 4.35 13 2.41 2.3 2.66 3.03 3.76 14 2.06 1.784 2.136 2.632 2.956 4.366 15 2.42 2.23 2.07 2.41 3.08 4.23 16 2.88 2.63 2.29 2.93 4.38 5.51 17 2.66 2.49 2.72 3.15 4.38 5.81 18 2.68 2.51 2.54 3 3.96 5.28 19 3.07 2.92 2.9 3.32 4.4 5.75 5.93 20 2.39 2.09 2.24 2.65 3.62 4.78 5.08 21 2.06 1.89 2.15 2.7 3.61 4.56 4.84 22 1.89 1.84 2.33 2.73 3.73 5.43 6.03 23 2.39 2.15 2.4 2.82 3.94 5.68 6.02

[0427] Table 52 below shows the volume (in mm) of each lens in the first to seventh lenses of each of Examples 1 to 23 described in this application. 3 (In units): 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.

[0428] Table 52

[0429]

[0430]

[0431] Table 53 below shows the weight (in mg) of each of the first to seventh lenses in each of Examples 1 to 23 described in this application. 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.

[0432] Table 53

[0433]

[0434]

[0435] Table 54 below shows the total outer diameter (including ribs) (in mm) of each of the first to seventh lenses in each of Examples 1 to 23 described in this application. 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.

[0436] Table 54

[0437]

[0438]

[0439] Table 55 below shows the thickness (in mm) of the flat portion of the rib of each of the first to seventh lenses in each of Examples 1 to 23 described in this application. 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.

[0440] Table 55

[0441]

[0442]

[0443] Table 56 below shows the dimensionless values ​​of each of the following items for each of Examples 1 to 23 described in this application: the ratio L1w / L7w in conditional expressions 1 and 7, the ratio S6d / f in conditional expressions 2 and 8, the ratio L1TR / L7TR in conditional expressions 3 and 9, the ratio L1234TRavg / L7TR in conditional expressions 4 and 10, the ratio L12345TRavg / L7TR in conditional expressions 5 and 11, and the ratio |f123457-f| / f in conditional expressions 6 and 12. The dimensionless value of each of these ratios is obtained by dividing two values ​​expressed in the same units of measurement.

[0444] Table 56

[0445] Example L1w / L7w SP6 / f L1TR / L7TR L1234TRavg / L7TR L12345TRavg / L7TR |f123457-f| / f 1 0.2009 1.2353 0.6170 0.690 0.735 24.451 2 0.3552 0.6321 0.7015 0.757 0.777 0.029 3 0.3945 0.6228 0.7533 0.811 0.832 0.029 4 0.2109 0.6115 0.7089 0.759 0.790 2.178 5 0.2659 1.1308 0.6698 0.710 0.740 4.720 6 0.1734 1.1111 0.6641 0.698 0.726 7.479 7 0.2141 1.1111 0.6101 0.645 0.674 0.048 8 0.2281 1.0787 0.5977 0.632 0.662 0.047 9 0.1939 1.3141 0.6004 0.685 0.727 1.561 10 0.2301 1.0434 0.5616 0.668 0.721 0.065 11 0.2094 1.3149 0.6014 0.683 0.730 1.240 12 0.1550 0.9886 0.5892 0.710 0.727 1.423 13 0.1387 0.5953 0.682 0.731 1.501 14 0.1282 1.1195 0.5920 0.656 0.700 0.053 15 0.1995 1.0522 0.6470 0.715 0.751 4.791 16 0.1964 1.2717 0.6691 0.734 0.770 2.055 17 0.2903 1.2660 0.6598 0.738 0.774 8.092 18 0.1938 1.1862 0.5868 0.619 0.648 0.202 19 0.1960 1.1917 0.6133 0.645 0.678 0.602 20 0.1475 1.0409 0.5832 0.616 0.645 0.098 21 0.1196 1.0600 0.5437 0.579 0.608 0.010 22 0.1031 1.0935 0.4950 0.525 0.550 0.060 23 0.1209 1.2170 0.5522 0.582 0.607 0.071

[0446] Figure 47 and Figure 48 This is a cross-sectional view showing an example of an optical imaging system and lens barrel connected to each other.

[0447] Examples of the optical imaging system 100 described in this application may include, for example: Figure 47 and Figure 48 The self-aligned structure shown.

[0448] exist Figure 47 In one example shown, the optical imaging system 100 includes a self-alignment structure in which the optical axes of the four consecutive lenses 1000, 2000, 3000 and 4000 are aligned with the optical axis of the optical imaging system 100 by connecting the lenses to each other.

[0449] A first lens 1000, positioned closest to the object side of the optical imaging system 100, is configured to contact 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. A second lens 2000 is connected 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. A third lens 3000 is connected 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. A fourth lens 4000 is connected 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 may be configured not to contact the inner surface of the lens barrel 200.

[0450] Although Figure 47 The diagram shows that the first lens 1000 to the fourth lens 4000 are connected to each other, but the four consecutive lenses connected to each other can be changed to the second lens 2000 to the fifth lens 5000, the third lens 3000 to the sixth lens 6000, or the fourth lens 4000 to the seventh lens 7000.

[0451] exist Figure 48 In another example shown, the optical imaging system 100 includes a self-alignment structure in which the optical axes of the five consecutive lenses 1000, 2000, 3000, 4000 and 5000 are aligned with the optical axis of the optical imaging system 100 by connecting the lenses to each other.

[0452] A first lens 1000, positioned closest to the object side of the optical imaging system 100, is configured to contact 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. A second lens 2000 is connected 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. A third lens 3000 is connected 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. A fourth lens 4000 is connected 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. A fifth lens 5000 is connected 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 may be configured not to contact the inner surface of the lens barrel 200.

[0453] Although Figure 48 The diagram shows that the first lens 1000 to the fifth lens 5000 are connected to each other, but the five consecutive lenses connected to each other can be changed to the second lens 2000 to the sixth lens 6000, or the third lens 3000 to the seventh lens 7000.

[0454] Figure 49 This is a cross-sectional view showing an example of the seventh lens.

[0455] Figure 49 The following are shown: the total outer diameter of the seventh lens (L7TR), the thickness of the flat portion of the rib of the seventh lens (L7rT), the edge thickness of the seventh lens (L7edgeT), the thickness of the seventh lens at the first inflection point on the object side of the seventh lens (Yc71P1), the thickness of the seventh lens at the second inflection point on the object side of the seventh lens (Yc71P2), and the thickness of the seventh lens at the first inflection point on the image side of the seventh lens (Yc72P1).

[0456] Figure 50 This is a cross-sectional view showing an example of the shape of the ribs of a lens.

[0457] Examples of the optical imaging system 100 described in this application may include structures for preventing flickering and reflections.

[0458] For example, such as Figure 50 As shown, the ribs of the first to seventh lenses (1000, 2000, 3000, 4000, 5000, 6000, and 7000) that construct the optical imaging system can be partially surface-treated to roughen the surface of the ribs. Surface-treatment methods may include, but are not limited to, chemical etching and physical polishing.

[0459] The surface treatment area EA can be formed over the entire area from the edge of the optical portion of the lens through which light actually passes to the end of the rib. However, as Figure 50 As shown, the unprocessed region NEA, including recesses E11, E21, and E22, may not undergo surface treatment, or the unprocessed region NEA, including recesses E11, E21, and E22, may undergo surface treatment to give it a roughness different from that of the surface-treated region EA. The width G1 of the first unprocessed region NEA formed on one surface of the lens may be different from the width G2 of the second unprocessed region NEA formed on the other surface of the lens. Figure 50 In the example shown, G1 is greater than G2.

[0460] The unprocessed region NEA with width G1 includes a first recess E11, and the unprocessed region NEA with width G2 includes a second recess E21 and a third recess E22. The distance G4 from the end of the rib to the second recess E21 is less than the distance G3 from the end of the rib to the first recess E11. Furthermore, the distance G5 from the end of the rib to the third recess E22 is less than the distance G3 from the end of the rib to the first recess E11.

[0461] The positions of the untreated area NEA and the recesses E11, E21 and E22, as described above, can facilitate the measurement of the lens's concentricity.

[0462] The above examples enable the miniaturization of optical imaging systems and facilitate the correction of aberrations.

[0463] While this disclosure includes specific examples, it will be apparent upon understanding the disclosure of this 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 descriptive only and not for limiting purposes. The description of features or aspects in each example should be considered 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 components in the described system, architecture, apparatus, or circuit are combined in different ways and / or replaced or supplemented by other components or their equivalents. Therefore, the scope of this disclosure should not be limited by this 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 this disclosure.

Claims

1. An optical imaging system, comprising: A first lens, having a positive refractive power, and having a convex object side and a concave image side; A second lens, having a negative refractive power, and having a convex object side and a concave image side; A third lens, having a positive refractive power, and having a convex object side and a concave image side; A fourth lens, having a negative refractive power and a convex object side; A fifth lens, having a negative refractive power; A sixth lens, having a positive refractive power, and having a convex object side and a convex image side; And A seventh lens, having a negative refractive power, and having a concave object side and a concave image side, wherein, the first lens to the seventh lens are sequentially arranged from the object side towards the imaging surface, The optical imaging system comprises a total of seven lenses with refractive power, wherein 0.6 < (R11+R14) / (2 R1) < 3.0, where R1 is the radius of curvature of the object-side surface of the first 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. wherein, 1 < |f123457 - f| / f, wherein, f123457 is the combined focal length of the first lens to the seventh lens when the refractive index of the sixth lens is defined as 1.0 equal to the refractive index of air, and f is the total focal length of the optical imaging system, wherein, SD12 < SD34, wherein, SD12 is the distance from the image side of the first lens to the object side of the second lens, and SD34 is the distance from the image side of the third lens to the object side of the fourth lens, wherein, 0 < min(f1:f3) / max(f4:f7) < 0.4, wherein, min(f1:f3) is the minimum value of the absolute values of the focal lengths of the first lens to the third lens, and max(f4:f7) is the maximum value of the absolute values of the focal lengths of the fourth lens to the seventh lens, wherein, 0.1 < R1 / R5 < 0.7, wherein, R5 is the radius of curvature of the object side of the third lens.

2. The optical imaging system according to claim 1, wherein, 0.01 < R1 / R4 < 1.3, wherein, R4 is the radius of curvature of the image side of the second lens.

3. The optical imaging system according to claim 1, wherein, 0.05 < R1 / R6 < 0.9, wherein, R6 is the radius of curvature of the image side of the third lens.

4. The optical imaging system according to claim 1, wherein, 0.2 < R1 / R11 < 1.

2.

5. The optical imaging system according to claim 1, wherein, 0.8 < R1 / R14 < 1.

2.

6. The optical imaging system according to claim 1, wherein, 0.4 < D13 / D57 < 1.2, wherein, D13 is the distance from the object side of the first lens to the image side of the third lens, and D57 is the distance from the object side of the fifth lens to the image side of the seventh lens.

7. The optical imaging system according to claim 1, wherein, 0.1 < (1 / f1+1 / f2+1 / f3+1 / f4+1 / f5+1 / f6+1 / f7) f < 0.8, where f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, f4 is the focal length of the fourth lens, f5 is the focal length of the fifth lens, f6 is the focal length of the sixth lens, f7 is the focal length of the seventh lens, and f is the total focal length of the optical imaging system.

8. The optical imaging system according to claim 1, wherein, 0.1 < (1 / f1+1 / f2+1 / f3+1 / f4+1 / f5+1 / f6+1 / f7) TTL < 1.0, where f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, f4 is the focal length of the fourth lens, f5 is the focal length of the fifth lens, f6 is the focal length of the sixth lens, f7 is the focal length of the seventh lens, f is the total focal length of the optical imaging system, and TTL is the distance from the object side of the first lens to the imaging plane.

9. The optical imaging system according to claim 1, wherein, 0.4 < L1TR / L7TR < 0.7, wherein, L1TR is the total outer diameter of the first lens, L7TR is the total outer diameter of the seventh lens, and L1TR and L7TR are expressed in the same measurement unit.

10. An optical imaging system, comprising: [[ID= ​ ​ ​ ​ The sixth lens, having a positive refractive power, and having a convex object side and a convex image side; and The seventh lens, having a negative refractive power, and having a concave object side and a concave image side, wherein, the first lens to the seventh lens are arranged in sequence from the object side towards the imaging surface, wherein, the optical imaging system includes a total of seven lenses having refractive powers, wherein, 1 < |f123457 - f| / f, where f123457 is the combined focal length of the first lens to the seventh lens when the refractive index of the sixth lens is defined as 1.0, which is equal to the refractive index of air, and f is the total focal length of the optical imaging system, wherein, SD12 < SD34, where SD12 is the distance from the image side of the first lens to the object side of the second lens, and SD34 is the distance from the image side of the third lens to the object side of the fourth lens, wherein, 0 < min(f1:f3) / max(f4:f7) < 0.4, where min(f1:f3) is the minimum value of the absolute values of the focal lengths of the first lens to the third lens, and max(f4:f7) is the maximum value of the absolute values of the focal lengths of the fourth lens to the seventh lens, wherein, 0.1 < R1 / R5 < 0.7, where R1 is the radius of curvature of the object side of the first lens, and R5 is the radius of curvature of the object side of the third lens.

11. The optical imaging system according to claim 10, wherein, 0.01 < R1 / R4 < 1.3, where R4 is the radius of curvature of the image side of the second lens.

12. The optical imaging system according to claim 10, wherein, 0.05 < R1 / R6 < 0.9, where R6 is the radius of curvature of the image side of the third lens.

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

14. The optical imaging system according to claim 10, wherein, 0.8 < R1 / R14 < 1.2 where R14 is the radius of curvature of the image side of the seventh lens.

15. The optical imaging system according to claim 10, wherein, 0.4 < D13 / D57 < 1.2, where D13 is the distance from the object side of the first lens to the image side of the third lens, and D57 is the distance from the object side of the fifth lens to the image side of the seventh lens.

16. The optical imaging system according to claim 10, wherein, 0.1 < (1 / f1+1 / f2+1 / f3+1 / f4+1 / f5+1 / f6+1 / f7) f < 0.8, where f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, f4 is the focal length of the fourth lens, f5 is the focal length of the fifth lens, f6 is the focal length of the sixth lens, f7 is the focal length of the seventh lens, and f is the total focal length of the optical imaging system.

17. The optical imaging system according to claim 10, wherein, 0.1 < (1 / f1+1 / f2+1 / f3+1 / f4+1 / f5+1 / f6+1 / f7) TTL < 1.0, where f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, f4 is the focal length of the fourth lens, f5 is the focal length of the fifth lens, f6 is the focal length of the sixth lens, f7 is the focal length of the seventh lens, f is the total focal length of the optical imaging system, and TTL is the distance from the object side of the first lens to the imaging plane.

18. The optical imaging system according to claim 10, wherein, 0.4 < L1TR / L7TR < 0.7, where L1TR is the total outer diameter of the first lens, L7TR is the total outer diameter of the seventh lens, and L1TR and L7TR are expressed in the same measurement unit.

Images