CN118169838A - Optical imaging system - Google Patents

Abstract

The optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, and an eleventh lens arranged in order from an object side, wherein the first lens has a positive refractive power, and the second lens has a positive refractive power, wherein the eleventh lens has at least one inflection point on at least one of an object side and an image side, and wherein 0.6< TTL/(2×IMG HT) <0.8 and Nv 26+.4 are satisfied, wherein TTL is a distance on an optical axis from the object side of the first lens to an imaging surface, IMG HT is half a diagonal length of the imaging surface, and Nv26 is a number of lenses having an Abbe number less than 26.

Description

Optical imaging system

Cross Reference to Related Applications

The present application claims the benefit of priority from korean patent application No. 10-2022-0171733 filed on the korean intellectual property office at 12 months 9 of 2022 and korean patent application No. 10-2023-0070160 filed on the korean intellectual property office at 5 months 31 of 2023, the entire disclosures of which are incorporated herein by reference for all purposes.

Technical Field

The present disclosure relates to optical imaging systems.

Background

The portable terminal may have a camera including an optical imaging system including a plurality of lenses to implement video call and image capturing operations.

In addition, with the gradual increase in the operation of cameras in portable terminals, cameras with high resolution for portable terminals may be required.

In addition, since the form factor of the portable terminal has been reduced, a miniaturized camera for the portable terminal may also be required. Therefore, it may be necessary to develop an optical imaging system that achieves high resolution while being slim.

The above information is presented merely as background information to aid in the understanding of the present disclosure. No determination is made, and no assertion is made, as to whether any of the above may apply as prior art to the present disclosure.

Disclosure of Invention

This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

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, a seventh lens, an eighth lens, a ninth lens, a tenth lens, and an eleventh lens arranged in order from an object side, wherein the first lens has a positive refractive power, and the second lens has a positive refractive power, and the eleventh lens has at least one inflection point on at least one of an object side and an image side thereof, and satisfies 0.6< TTL/(2×IMG HT) <0.8 and Nv 26. Gtoreq.4, wherein TTL is a distance on an optical axis from the object side of the first lens to an imaging surface, IMG HT is half a diagonal length of the imaging surface, and Nv26 is a number of lenses having an Abbe number less than 26.

The condition equation 10< f1/f2<150 may be satisfied, where f1 is the focal length of the first lens and f2 is the focal length of the second lens.

The condition equation 1.15< ttl/f <1.3 can be satisfied, where f is the total focal length of the optical imaging system.

The conditional equation 30< v2-v3<40 may be satisfied, where v2 is the abbe number of the second lens and v3 is the abbe number of the third lens.

At least two lenses continuously arranged among the first to seventh lenses may have an abbe number less than 26.

At least one of the third to fifth lenses may have a refractive index greater than 1.63 and an abbe number less than 24.

At least two of the sixth lens to the eighth lens may have a refractive index greater than 1.61 and an abbe number less than 26.

The conditional equation 29< |v1-v3| <40 may be satisfied, where v1 is the abbe number of the first lens and v3 is the abbe number of the third lens.

The conditional equation 30< v2-v6<40 may be satisfied, where v2 is the abbe number of the second lens and v6 is the abbe number of the sixth lens.

The thickness on the optical axis of the second lens may be thicker than the thickness on the optical axis of the first lens.

The conditional equation 1.5< T2/T1<3 may be satisfied, where T1 is the thickness on the optical axis of the first lens and T2 is the thickness on the optical axis of the second lens.

The conditional equation 0.25< D15/TTL <0.45 may be satisfied, where D15 is a distance on the optical axis from the object side of the first lens element to the image side of the fifth lens element.

The condition equation 1.4< Fno <1.7 can be satisfied, where Fno is the F-number of the optical imaging system.

The conditional equation |f345|+|f678| <0.3mm may be satisfied, where f345 is the combined focal length of the third lens, the fourth lens, and the fifth lens, and f678 is the combined focal length of the sixth lens, the seventh lens, and the eighth lens.

The conditional equation 0.5< |f345/f678| <3 may be satisfied, where f345 is the combined focal length of the third lens, the fourth lens, and the fifth lens, and f678 is the combined focal length of the sixth lens, the seventh lens, and the eighth lens.

Each of the second to fourth lenses may have a convex object side and a concave image side.

In another general aspect, an optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, and an eleventh lens arranged in order from an object side, wherein the first lens and the second lens each have positive refractive power, wherein the seventh lens and the eighth lens each have negative refractive power, wherein 0.6< TTL/(2×img HT) <0.8 and 1.4< Fno <1.7 are satisfied, wherein TTL is a distance on an optical axis from an object side of the first lens to an imaging surface, IMG HT is half a diagonal length of the imaging surface, and Fno is an F number of the optical imaging system.

Adjacent lenses of the first to eleventh lenses may be spaced apart from each other.

The conditional equation Nv26 ≡4 may be satisfied, where Nv26 is the number of lenses having abbe numbers smaller than 26.

The seventh lens may have a concave image side surface.

Other features and aspects will become apparent from the appended claims, the accompanying drawings, and the following detailed description.

Drawings

Fig. 1 shows a block diagram of an exemplary optical imaging system according to a first embodiment of the present disclosure.

Fig. 2 is a view illustrating aberration characteristics of the exemplary optical imaging system shown in fig. 1.

Fig. 3 shows a block diagram of an exemplary optical imaging system according to a second embodiment of the present disclosure.

Fig. 4 is a view illustrating aberration characteristics of the exemplary optical imaging system shown in fig. 3.

Fig. 5 shows a block diagram of an exemplary optical imaging system according to a third embodiment of the present disclosure.

Fig. 6 is a view illustrating aberration characteristics of the exemplary optical imaging system shown in fig. 5.

Fig. 7 shows a block diagram of an exemplary optical imaging system according to a fourth embodiment of the present disclosure.

Fig. 8 is a view illustrating aberration characteristics of the exemplary optical imaging system shown in fig. 7.

Fig. 9 shows a block diagram of an exemplary optical imaging system according to a fifth embodiment of the present disclosure.

Fig. 10 is a view showing aberration characteristics of the exemplary optical imaging system shown in fig. 9.

Fig. 11 shows a block diagram of an exemplary optical imaging system according to a sixth embodiment of the present disclosure.

Fig. 12 is a view showing aberration characteristics of the exemplary optical imaging system shown in fig. 11.

Fig. 13 shows a block diagram of an exemplary optical imaging system according to a seventh embodiment of the present disclosure.

Fig. 14 is a view showing aberration characteristics of the exemplary optical imaging system shown in fig. 13.

Fig. 15 shows a block diagram of an exemplary optical imaging system according to an eighth embodiment of the present disclosure.

Fig. 16 is a view showing aberration characteristics of the exemplary optical imaging system shown in fig. 15.

Fig. 17 shows a block diagram of an exemplary optical imaging system according to a ninth embodiment of the present disclosure.

Fig. 18 is a view showing aberration characteristics of the exemplary optical imaging system shown in fig. 17.

Fig. 19 shows a block diagram of an exemplary optical imaging system according to a tenth embodiment of the present disclosure.

Fig. 20 is a view showing aberration characteristics of the exemplary optical imaging system shown in fig. 19.

Fig. 21 shows a block diagram of an exemplary optical imaging system according to an eleventh embodiment of the present disclosure.

Fig. 22 is a view showing aberration characteristics of the exemplary optical imaging system shown in fig. 21.

Like reference numerals refer to like elements throughout the drawings and detailed description. The figures may not be drawn to scale and the relative sizes, proportions, and depictions of elements in the figures may be exaggerated for clarity, illustration, and convenience.

Detailed Description

Hereinafter, although examples of the present disclosure will be described in detail with reference to the accompanying drawings, it should be noted that examples are not limited thereto.

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatus, and/or systems described herein. However, various alterations, modifications and equivalents of the methods, devices and/or systems described herein will be apparent upon an understanding of this disclosure. For example, the order of the operations described herein is merely an example, and is not limited to the order set forth herein except for operations that must occur in a particular order, but may be altered as will be apparent upon an understanding of the disclosure. In addition, descriptions of features well known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided solely to illustrate some of the many possible ways of implementing the methods, devices, and/or systems described herein that will be apparent after an understanding of the present disclosure.

Throughout the specification, when an element such as a layer, region or substrate is described as being "on," connected to, "or" coupled to "another element, the element may be directly on," directly "connected to," or directly "coupled to" the other element, or there may be one or more other elements interposed between the element and the other element. In contrast, when an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element, there are no other elements intervening elements present.

As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more; likewise, "at least one" includes any one of the associated listed items and any combination of any two or more.

Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, first component, first region, first layer, or first portion referred to in these examples may also be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the examples described herein.

Spatially relative terms such as "above … …," "upper," "below … …," "lower," and the like may be used herein for descriptive convenience to describe one element's relationship to another element as illustrated in the figures. In addition to the orientations depicted in the drawings, these spatially relative terms are intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is turned over, elements described as "on" or "above" relative to another element would then be oriented "under" or "below" the other element. Thus, the expression "above … …" encompasses both orientations of "above" and "below" depending on the spatial orientation of the device. The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The terms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, amounts, operations, components, elements, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, amounts, operations, components, elements, and/or groups thereof.

Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, examples described herein are not limited to the specific shapes shown in the drawings, but include shape variations that occur during manufacture.

It should be noted that, herein, the use of the word "may" with respect to an example, such as with respect to what an example may include or implement, means that there is at least one example in which such features are included or implemented, and all examples are not limited thereto.

The features of the examples described herein may be combined in various ways that will be apparent after an understanding of the present disclosure. Further, while the examples described herein have a variety of configurations, other configurations that will be apparent after an understanding of the present disclosure are also possible.

One aspect of the present disclosure may provide an optical imaging system configured to achieve high resolution while being slim.

In the structural diagram of the attached lenses, the thickness, size, and shape of the lenses are slightly exaggerated for description, and in particular, the shape of the spherical or aspherical surface presented in the structural diagram of the lenses is presented as an example only, but one or more examples are not limited thereto.

An optical imaging system according to an exemplary embodiment of the present disclosure includes eleven lenses.

The first lens refers to a lens closest to the object side, and the eleventh lens refers to a lens closest to the imaging surface (or image sensor).

In addition, in each lens, the first surface represents a side (or object side) closest to the object side, and the second surface represents a side (or image side) closest to the image side. In addition, in one or more examples of the present disclosure, the values of radius of curvature, thickness, distance, and focal length of the lens are all in mm units, and the unit of field of view (FOV) is in degrees.

In addition, in the description of the shape of each lens, disclosure of a shape that is convex on one surface means that the paraxial region portion of the corresponding surface is convex, and disclosure of a shape that is concave on one surface means that the paraxial region portion of the corresponding surface is concave.

Therefore, even if one surface of the lens is described as a convex shape, the edge portion of the lens may have a concave shape. Similarly, even if one surface of the lens is described as a concave shape, the edge portion of the lens may have a convex shape.

Paraxial region refers to a very narrow region near and including the optical axis.

The imaging surface may refer to a virtual surface on which a focal point is formed by the optical imaging system. Alternatively, the imaging surface may refer to one surface of the image sensor on which light is received.

An optical imaging system according to an exemplary embodiment of the present disclosure includes at least eleven lenses.

For example, an optical imaging system according to an exemplary embodiment of the present disclosure includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, and an eleventh lens, which are arranged in order from the object side.

The first lens to the eleventh lens are spaced apart from each other by a predetermined distance along the optical axis, respectively.

However, the optical imaging system according to the exemplary embodiments of the present disclosure may further include an image sensor for converting an image of an incident object into an electrical signal.

Further, the optical imaging system may further include an infrared filter (hereinafter referred to as "filter") for blocking infrared rays. The filter may be disposed between the eleventh lens and the image sensor.

In addition, the optical imaging system may further include an aperture for adjusting the amount of light.

The first to eleventh lenses constituting the optical imaging system according to the exemplary embodiment of the present disclosure may be formed of a plastic material.

In addition, at least one of the first to eleventh lenses may have an aspherical surface. For example, each of the first to eleventh lenses may have at least one aspherical surface.

That is, at least one of the first surface and the second surface of the first lens to the eleventh lens may be an aspherical surface. Here, the aspherical surfaces of the first to eleventh lenses are represented by the following equation 1.

Equation 1:

In equation 1, c is the curvature (i.e., the inverse of the radius of curvature) of the lens, K is a conic constant, and Y is the distance from any point on the aspherical surface of the lens to the optical axis in a direction perpendicular to the optical axis of the lens surface. In addition, constants a to H, J and L to P refer to aspherical coefficients. Further, Z (SAG) represents a distance from a point on the lens surface at a distance Y from the optical axis of the lens surface to a tangential plane perpendicular to the optical axis and intersecting with the vertex of the lens surface in a direction parallel to the optical axis of the lens surface.

The optical imaging system may include other elements in addition to the first to eleventh lenses.

An exemplary optical imaging system according to an exemplary embodiment of the present disclosure may satisfy at least one of the following conditional equations.

Conditional equation 1:10< f1/f2<150

Conditional equation 2:1.15< TTL/f <1.3

Conditional equation 3:30< v2-v3<40

Conditional equation 4:0.6< TTL/(2. Times. IMG HT) <0.8

Conditional equation 5: nv26 is greater than or equal to 4

Conditional equation 6:29< |v1-v3| <40

Conditional equation 7:30< v2-v6<40

Conditional equation 8: i f345 +|f678| <0.3mm

Conditional equation 9:0.5< |f345/f678| <3

Conditional equation 10:1.5< T2/T1<3

Conditional equation 11:1.4< Fno <1.7

Conditional equation 12:0.25< D15/TTL <0.45

In the conditional equation, f is the total focal length of the optical imaging system, f1 is the focal length of the first lens, f2 is the focal length of the second lens, f345 is the combined focal length of the third lens, the fourth lens, and the fifth lens, and f678 is the combined focal length of the sixth lens, the seventh lens, and the eighth lens.

V1 is the abbe number of the first lens, v2 is the abbe number of the second lens, v3 is the abbe number of the third lens, and v6 is the abbe number of the sixth lens.

Nv26 is the number of lenses having an abbe number less than 26.

TTL is the distance on the optical axis from the object side of the first lens to the imaging surface, and IMG HT is the maximum effective image height of the optical imaging system and is equal to half the diagonal length of the effective imaging area of the imaging surface.

T1 is the thickness on the optical axis of the first lens, T2 is the thickness on the optical axis of the second lens, and D15 is the distance on the optical axis from the object side of the first lens to the image side of the fifth lens.

Fno is the F-number of the optical imaging system.

The first lens may have positive refractive power. In addition, the first lens may have a meniscus shape protruding toward the object side. In addition, the first surface of the first lens may have a shape that is convex in the paraxial region, and the second surface of the first lens may have a shape that is concave in the paraxial region.

Alternatively, the first lens may have a meniscus shape convex toward the image side. In addition, the first surface of the first lens may have a concave shape in the paraxial region, and the second surface of the first lens may have a convex shape in the paraxial region.

The second lens may have positive refractive power. In addition, the second lens may have a meniscus shape protruding toward the object side. In addition, the first surface of the second lens may have a shape that is convex in the paraxial region, and the second surface of the second lens may have a shape that is concave in the paraxial region.

The third lens may have a negative refractive power or a positive refractive power. In addition, the third lens may have a meniscus shape protruding toward the object side. In addition, the first surface of the third lens may have a shape that is convex in the paraxial region, and the second surface of the third lens may have a shape that is concave in the paraxial region.

The fourth lens may have a negative refractive power or a positive refractive power. In addition, the fourth lens may have a meniscus shape convex toward the object side. In addition, the first surface of the fourth lens may have a shape that is convex in the paraxial region, and the second surface of the fourth lens may have a shape that is concave in the paraxial region.

The fifth lens has a negative refractive power or a positive refractive power. In addition, the fifth lens may have a meniscus shape convex toward the object side. In addition, the first surface of the fifth lens may have a convex shape in the paraxial region, and the second surface of the fifth lens may have a concave shape in the paraxial region.

Alternatively, the fifth lens may have a meniscus shape convex toward the image side. In addition, the first surface of the fifth lens may have a concave shape in the paraxial region, and the second surface of the fifth lens may have a convex shape in the paraxial region.

The sixth lens may have a negative refractive power or a positive refractive power. The sixth lens may have a meniscus shape convex toward the image side. In addition, the first surface of the sixth lens may have a concave shape in the paraxial region, and the second surface of the sixth lens may have a convex shape in the paraxial region.

Alternatively, the sixth lens may have a meniscus shape convex toward the object side. In addition, the first surface of the sixth lens may have a convex shape in the paraxial region, and the second surface of the sixth lens may have a concave shape in the paraxial region.

The seventh lens may have a negative refractive power. In addition, the seventh lens may have a meniscus shape convex toward the object side. In addition, the first surface of the seventh lens may have a convex shape in the paraxial region, and the second surface of the seventh lens may have a concave shape in the paraxial region.

The eighth lens may have a negative refractive power. In addition, the eighth lens may have a meniscus shape convex toward the object side. In addition, the first surface of the eighth lens may have a convex shape in the paraxial region, and the second surface of the eighth lens may have a concave shape in the paraxial region.

Alternatively, the eighth lens may have a meniscus shape convex toward the image side. In addition, the first surface of the eighth lens may have a concave shape in the paraxial region, and the second surface of the eighth lens may have a convex shape in the paraxial region.

Alternatively, the eighth lens may have a shape in which both surfaces thereof are concave. In addition, the first surface and the second surface of the eighth lens may have a concave shape in the paraxial region.

The ninth lens has a negative refractive power or a positive refractive power. In addition, the ninth lens may have a meniscus shape convex toward the image side. In addition, the first surface of the ninth lens may have a concave shape in the paraxial region, and the second surface of the ninth lens may have a convex shape in the paraxial region.

Alternatively, the ninth lens may have a meniscus shape convex toward the object side. In addition, the first surface of the ninth lens may have a shape that is convex in the paraxial region, and the second surface of the ninth lens may have a shape that is concave in the paraxial region.

The tenth lens has a negative refractive power or a positive refractive power. In addition, the tenth lens may have a meniscus shape convex toward the object side. In addition, the first surface of the tenth lens may have a convex shape in the paraxial region, and the second surface of the tenth lens may have a concave shape in the paraxial region.

Alternatively, the tenth lens may have a meniscus shape convex toward the image side. In addition, the first surface of the tenth lens may have a concave shape in the paraxial region, and the second surface of the tenth lens may have a convex shape in the paraxial region.

In addition, the tenth lens may have at least one inflection point formed on at least one of the first surface and the second surface. For example, the first surface of the tenth lens may have a shape that is convex in the paraxial region, and may have a shape that is concave in a portion other than the paraxial region. The second surface of the tenth lens may have a concave shape in the paraxial region, and may have a convex shape in a portion other than the paraxial region.

The eleventh lens has a negative refractive power or a positive refractive power. In addition, the eleventh lens may have a meniscus shape convex toward the object side. In addition, the first surface of the eleventh lens may have a shape that is convex in the paraxial region, and the second surface of the eleventh lens may have a shape that is concave in the paraxial region.

Alternatively, the eleventh lens may have a meniscus shape convex toward the image side. In addition, the first surface of the eleventh lens may have a concave shape in the paraxial region, and the second surface of the eleventh lens may have a convex shape in the paraxial region.

In addition, the eleventh lens may have at least one inflection point formed on at least one of the first surface and the second surface. For example, the first surface of the eleventh lens may have a shape that is convex in the paraxial region, and may have a shape that is concave in a portion other than the paraxial region. The second surface of the eleventh lens may have a shape that is concave in the paraxial region, and may have a shape that is convex in a portion other than the paraxial region.

In one or more examples, each of the at least two lenses disposed in succession may have an abbe number of less than 26. For example, at least two lenses arranged consecutively among the first lens to the seventh lens may have an abbe number less than 26.

In addition, among the third lens to the seventh lens, three or more lenses having an abbe number less than 26 may be provided.

At least one of the third to fifth lenses may have a refractive index greater than 1.63 and an abbe number less than 24.

At least two of the sixth lens to the eighth lens may have a refractive index greater than 1.61 and an abbe number less than 26.

The thickness on the optical axis of the second lens may be thicker than the thickness on the optical axis of the first lens.

The absolute value of the combined focal length of the third lens, the fourth lens, and the fifth lens may be less than 0.2mm.

The composite focal lengths of the sixth lens, the seventh lens, and the eighth lens may have negative values. In addition, an absolute value of a combined focal length of the sixth lens, the seventh lens, and the eighth lens may be less than 0.1mm.

An optical imaging system 100 according to a first embodiment of the present disclosure will be described with reference to fig. 1 and 2.

The optical imaging system 100 according to the first embodiment of the present disclosure may include a first lens 101, a second lens 102, a third lens 103, a fourth lens 104, a fifth lens 105, a sixth lens 106, a seventh lens 107, an eighth lens 108, a ninth lens 109, a tenth lens 110, and an eleventh lens 111, and may further include a filter 112 and an image sensor IS.

The optical imaging system 100 according to the first embodiment of the present disclosure may form a focal point on the imaging surface 113. Imaging surface 113 may refer to a surface on which a focal point is formed by an optical imaging system. For example, the imaging surface 113 may refer to one surface of the image sensor IS on which light IS received.

The lens characteristics (radius of curvature, thickness of lenses or distance between lenses, refractive index, abbe number, and focal length) of each lens are shown in table 1.

TABLE 1

In an example, the total focal length f of the optical imaging system 100 according to the first embodiment of the present disclosure is 6.85mm, fno is 1.497, and IMG HT is 6.15mm.

In the first embodiment of the present disclosure, the first lens 101 has a positive refractive power, the first surface of the first lens 101 has a shape convex in a paraxial region, and the second surface of the first lens 101 has a shape concave in a paraxial region.

The second lens 102 has a positive refractive power, the first surface of the second lens 102 has a shape convex in a paraxial region, and the second surface of the second lens 102 has a shape concave in a paraxial region.

The third lens 103 has a positive refractive power, a first surface of the third lens 103 has a shape convex in a paraxial region, and a second surface of the third lens 103 has a shape concave in a paraxial region.

The fourth lens 104 has a negative refractive power, the first surface of the fourth lens 104 has a shape convex in the paraxial region, and the second surface of the fourth lens 104 has a shape concave in the paraxial region.

The fifth lens 105 has a positive refractive power, a first surface of the fifth lens 105 has a shape convex in a paraxial region, and a second surface of the fifth lens 105 has a shape concave in a paraxial region.

The sixth lens 106 has a positive refractive power, the first surface of the sixth lens 106 has a concave shape in the paraxial region, and the second surface of the sixth lens 106 has a convex shape in the paraxial region.

The seventh lens 107 has a negative refractive power, the first surface of the seventh lens 107 has a shape that is convex in the paraxial region, and the second surface of the seventh lens 107 has a shape that is concave in the paraxial region.

The eighth lens 108 has a negative refractive power, the first surface of the eighth lens 108 has a shape convex in the paraxial region, and the second surface of the eighth lens 108 has a shape concave in the paraxial region.

The ninth lens 109 has a negative refractive power, the first surface of the ninth lens 109 has a shape concave in the paraxial region, and the second surface of the ninth lens 109 has a shape convex in the paraxial region.

The tenth lens 110 has a positive refractive power, the first surface of the tenth lens 110 has a shape convex in the paraxial region, and the second surface of the tenth lens 110 has a shape concave in the paraxial region.

The eleventh lens 111 has a negative refractive power, the first surface of the eleventh lens 111 has a shape convex in the paraxial region, and the second surface of the eleventh lens 111 has a shape concave in the paraxial region.

Further, at least one of the tenth lens 110 and the eleventh lens 111 has at least one inflection point formed on at least one of the first surface and the second surface.

In an example, each surface of the first lens 101 to the eleventh lens 111 has an aspherical coefficient as shown in table 2. For example, the object side surface and the image side surface of the first lens 101 to the eleventh lens 111 are both aspherical surfaces.

TABLE 2

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Further, the exemplary optical imaging system of the above configuration may have aberration characteristics shown in fig. 2.

An optical imaging system 200 according to a second embodiment of the present disclosure will be described with reference to fig. 3 and 4.

The optical imaging system 200 according to the second embodiment of the present disclosure may include a first lens 201, a second lens 202, a third lens 203, a fourth lens 204, a fifth lens 205, a sixth lens 206, a seventh lens 207, an eighth lens 208, a ninth lens 209, a tenth lens 210, and an eleventh lens 211, and may further include a filter 212 and an image sensor IS.

The optical imaging system 200 according to the second embodiment of the present disclosure may form a focal point on the imaging surface 213. Imaging surface 213 may refer to the surface on which the focal point is formed by the optical imaging system. For example, the imaging surface 213 may refer to one surface of the image sensor IS on which light IS received.

The lens characteristics (radius of curvature, thickness of lenses or distance between lenses, refractive index, abbe number, and focal length) of each lens are shown in table 3.

TABLE 3 Table 3

Face number	Marking	Radius of curvature	Thickness or distance of	Refractive index	Abbe number	Focal length
							S1	First lens	3.290	0.373	1.5349	55.74	497.2780
S2		3.200	0.115
							S3	Second lens	3.144	0.987	1.5440	55.99	6.4754
S4		26.031	0.075
							S5	Third lens	33.420	0.320	1.6707	19.24	-674.1150
S6		31.000	0.032
							S7	Fourth lens	12.361	0.320	1.6707	19.24	-14.3714
S8		5.360	0.126
							S9	Fifth lens	6.385	0.505	1.5440	55.99	20.1550
S10		14.862	0.545
							S11	Sixth lens	-9.707	0.320	1.6707	19.24	2521.1700
S12		-9.779	0.088
							S13	Seventh lens	129.183	0.320	1.6608	20.38	-49.1978
S14		25.946	0.118
							S15	Eighth lens	21.922	0.367	1.5349	55.74	-90.7150
S16		15.012	0.143
							S17	Ninth lens	-6.769	0.320	1.6144	25.94	-69.7371
S18		-8.184	0.181
							S19	Tenth lens	3.141	0.605	1.5440	55.99	7.9563
S20		10.671	1.147
							S21	Eleventh lens	30.767	0.710	1.5349	55.74	-4.7977
S22		2.349	0.499
							S23	Optical filter	Infinity of infinity	0.210	1.5168	64.20
S24		Infinity of infinity	0.211
							S25	Imaging surface	Infinity of infinity

In an example, the total focal length f of the optical imaging system 200 according to the second embodiment of the present disclosure is 6.85mm, fno is 1.497, and IMG HT is 6.15mm.

In the second embodiment of the present disclosure, the first lens 201 has a positive refractive power, the first surface of the first lens 201 has a shape convex in a paraxial region, and the second surface of the first lens 201 has a shape concave in a paraxial region.

The second lens 202 has a positive refractive power, the first surface of the second lens 202 has a shape that is convex in the paraxial region, and the second surface of the second lens 202 has a shape that is concave in the paraxial region.

The third lens 203 has a negative refractive power, a first surface of the third lens 203 has a shape convex in a paraxial region, and a second surface of the third lens 203 has a shape concave in a paraxial region.

The fourth lens 204 has a negative refractive power, the first surface of the fourth lens 204 has a shape that is convex in the paraxial region, and the second surface of the fourth lens 204 has a shape that is concave in the paraxial region.

The fifth lens 205 has a positive refractive power, a first surface of the fifth lens 205 has a shape convex in a paraxial region, and a second surface of the fifth lens 205 has a shape concave in a paraxial region.

The sixth lens 206 has a positive refractive power, the first surface of the sixth lens 206 has a concave shape in a paraxial region, and the second surface of the sixth lens 206 has a convex shape in a paraxial region.

The seventh lens 207 has a negative refractive power, a first surface of the seventh lens 207 has a shape convex in a paraxial region, and a second surface of the seventh lens 207 has a shape concave in a paraxial region.

The eighth lens 208 has a negative refractive power, a first surface of the eighth lens 208 has a shape convex in a paraxial region, and a second surface of the eighth lens 208 has a shape concave in a paraxial region.

The ninth lens 209 has a negative refractive power, a first surface of the ninth lens 209 has a concave shape in a paraxial region, and a second surface of the ninth lens 209 has a convex shape in a paraxial region.

The tenth lens 210 has a positive refractive power, a first surface of the tenth lens 210 has a shape convex in a paraxial region, and a second surface of the tenth lens 210 has a shape concave in a paraxial region.

The eleventh lens 211 has a negative refractive power, the first surface of the eleventh lens 211 has a shape convex in the paraxial region, and the second surface of the eleventh lens 211 has a shape concave in the paraxial region.

Further, at least one of the tenth lens 210 and the eleventh lens 211 has at least one inflection point formed on at least one of the first surface and the second surface.

In an example, each surface of the first lens 201 to the eleventh lens 211 has an aspherical coefficient as shown in table 4. For example, the object side surface and the image side surface of the first lens 201 to the eleventh lens 211 are both aspherical surfaces.

TABLE 4 Table 4

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Further, the exemplary optical imaging system of the above configuration may have aberration characteristics shown in fig. 4.

An optical imaging system 300 according to a third embodiment of the present disclosure will be described with reference to fig. 5 and 6.

The optical imaging system 300 according to the third embodiment of the present disclosure may include a first lens 301, a second lens 302, a third lens 303, a fourth lens 304, a fifth lens 305, a sixth lens 306, a seventh lens 307, an eighth lens 308, a ninth lens 309, a tenth lens 310, and an eleventh lens 311, and may further include a filter 312 and an image sensor IS.

The optical imaging system 300 according to the third embodiment of the present disclosure may form a focal point on the imaging surface 313. Imaging surface 313 may refer to a surface on which a focal point is formed by an optical imaging system. For example, the imaging surface 313 may refer to one surface of the image sensor IS on which light IS received.

The lens characteristics (radius of curvature, thickness of lenses or distance between lenses, refractive index, abbe number, and focal length) of each lens are shown in table 5.

TABLE 5

Face number	Marking	Radius of curvature	Thickness or distance of	Refractive index	Abbe number	Focal length
							S1	First lens	3.293	0.373	1.5349	55.74	537.2850
S2		3.200	0.116
							S3	Second lens	3.146	0.986	1.5440	55.99	6.4782
S4		26.053	0.075
							S5	Third lens	33.050	0.320	1.6608	20.38	-806.4510
S6		31.000	0.030
							S7	Fourth lens	12.421	0.320	1.6707	19.24	-14.3508
S8		5.367	0.124
							S9	Fifth lens	6.400	0.508	1.5440	55.99	20.1036
S10		14.995	0.552
							S11	Sixth lens	-9.649	0.320	1.6707	19.24	2196.8900
S12		-9.714	0.090
							S13	Seventh lens	258.161	0.320	1.6608	20.38	-48.8973
S14		28.701	0.110
							S15	Eighth lens	21.894	0.366	1.5349	55.74	-91.2938
S16		15.028	0.141
							S17	Ninth lens	-6.742	0.320	1.6144	25.94	-70.6238
S18		-8.127	0.185
							S19	Tenth lens	3.169	0.615	1.5440	55.99	7.9668
S20		10.984	1.142
							S21	Eleventh lens	30.765	0.713	1.5349	55.74	-4.8044
S22		2.352	0.499
							S23	Optical filter	Infinity of infinity	0.210	1.5168	64.20
S24		Infinity of infinity	0.211
							S25	Imaging surface	Infinity of infinity

In an example, the total focal length f of the optical imaging system 300 according to the third embodiment of the present disclosure is 6.85mm, fno is 1.497, and IMG HT is 6.15mm.

In the third embodiment of the present disclosure, the first lens 301 has a positive refractive power, the first surface of the first lens 301 has a shape convex in a paraxial region, and the second surface of the first lens 301 has a shape concave in a paraxial region.

The second lens 302 has a positive refractive power, the first surface of the second lens 302 has a shape convex in the paraxial region, and the second surface of the second lens 302 has a shape concave in the paraxial region.

The third lens 303 has a negative refractive power, the first surface of the third lens 303 has a shape convex in a paraxial region, and the second surface of the third lens 303 has a shape concave in a paraxial region.

The fourth lens 304 has a negative refractive power, the first surface of the fourth lens 304 has a shape that is convex in the paraxial region, and the second surface of the fourth lens 304 has a shape that is concave in the paraxial region.

The fifth lens 305 has a positive refractive power, a first surface of the fifth lens 305 has a shape convex in a paraxial region, and a second surface of the fifth lens 305 has a shape concave in a paraxial region.

The sixth lens 306 has a positive refractive power, a first surface of the sixth lens 306 has a concave shape in a paraxial region, and a second surface of the sixth lens 306 has a convex shape in a paraxial region.

The seventh lens 307 has a negative refractive power, the first surface of the seventh lens 307 has a shape that is convex in the paraxial region, and the second surface of the seventh lens 307 has a shape that is concave in the paraxial region.

The eighth lens 308 has a negative refractive power, a first surface of the eighth lens 308 has a shape convex in a paraxial region, and a second surface of the eighth lens 308 has a shape concave in a paraxial region.

The ninth lens 309 has a negative refractive power, a first surface of the ninth lens 309 has a concave shape in a paraxial region, and a second surface of the ninth lens 309 has a convex shape in a paraxial region.

The tenth lens 310 has a positive refractive power, a first surface of the tenth lens 310 has a shape convex in a paraxial region, and a second surface of the tenth lens 310 has a shape concave in a paraxial region.

The eleventh lens 311 has a negative refractive power, the first surface of the eleventh lens 311 has a shape convex in the paraxial region, and the second surface of the eleventh lens 311 has a shape concave in the paraxial region.

Further, at least one of the tenth lens 310 and the eleventh lens 311 has at least one inflection point formed on at least one of the first surface and the second surface.

In an example, each surface of the first lens 301 to the eleventh lens 311 has an aspherical coefficient shown in table 6. For example, the object side surface and the image side surface of the first lens 301 to the eleventh lens 311 are both aspherical surfaces.

TABLE 6

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Further, the exemplary optical imaging system of the above configuration may have aberration characteristics shown in fig. 6.

An optical imaging system 400 according to a fourth embodiment of the present disclosure will be described with reference to fig. 7 and 8.

The optical imaging system 400 according to the fourth embodiment of the present disclosure may include a first lens 401, a second lens 402, a third lens 403, a fourth lens 404, a fifth lens 405, a sixth lens 406, a seventh lens 407, an eighth lens 408, a ninth lens 409, a tenth lens 410, and an eleventh lens 411, and may further include a filter 412 and an image sensor IS.

The optical imaging system 400 according to the fourth embodiment of the present disclosure may form a focal point on the imaging surface 413. Imaging surface 413 may refer to a surface on which a focal point is formed by an optical imaging system. For example, the imaging surface 413 may refer to one surface of the image sensor IS on which light IS received.

The lens characteristics (radius of curvature, thickness of lenses or distance between lenses, refractive index, abbe number, and focal length) of each lens are shown in table 7.

TABLE 7

Face number	Marking	Radius of curvature	Thickness or distance of	Refractive index	Abbe number	Focal length
							S1	First lens	3.290	0.361	1.5349	55.74	553.7520
S2		3.200	0.064
							S3	Second lens	3.144	1.012	1.5440	55.99	6.5137
S4		24.715	0.076
							S5	Third lens	35.611	0.325	1.6144	25.94	7963.3700
S6		35.748	0.030
							S7	Fourth lens	14.033	0.320	1.6707	19.24	-14.8575
S8		5.774	0.135
							S9	Fifth lens	9.000	0.528	1.5440	55.99	21.0965
S10		40.843	0.473
							S11	Sixth lens	-9.761	0.320	1.6707	19.24	-2815.7600
S12		-9.940	0.110
							S13	Seventh lens	46.865	0.320	1.6608	20.38	-49.0610
S14		19.110	0.146
							S15	Eighth lens	21.934	0.344	1.5349	55.74	-75.9495
S16		14.165	0.121
							S17	Ninth lens	-7.284	0.320	1.6144	25.94	-211.4860
S18		-7.845	0.184
							S19	Tenth lens	3.023	0.561	1.5440	55.99	8.6209
S20		7.948	1.266
							S21	Eleventh lens	30.603	0.629	1.5349	55.74	-5.0067
S22		2.445	0.499
							S23	Optical filter	Infinity of infinity	0.210	1.5168	64.20
S24		Infinity of infinity	0.211
							S25	Imaging surface	Infinity of infinity

In an example, the total focal length f of the optical imaging system 400 according to the fourth embodiment of the present disclosure is 6.8246mm, fno is 1.497, and IMG HT is 6.15mm.

In the fourth embodiment of the present disclosure, the first lens 401 has a positive refractive power, the first surface of the first lens 401 has a shape convex in a paraxial region, and the second surface of the first lens 401 has a shape concave in a paraxial region.

The second lens 402 has a positive refractive power, a first surface of the second lens 402 has a shape that is convex in a paraxial region, and a second surface of the second lens 402 has a shape that is concave in a paraxial region.

The third lens 403 has a positive refractive power, a first surface of the third lens 403 has a shape convex in a paraxial region, and a second surface of the third lens 403 has a shape concave in a paraxial region.

The fourth lens 404 has a negative refractive power, a first surface of the fourth lens 404 has a shape convex in a paraxial region, and a second surface of the fourth lens 404 has a shape concave in a paraxial region.

The fifth lens 405 has a positive refractive power, a first surface of the fifth lens 405 has a shape convex in a paraxial region, and a second surface of the fifth lens 405 has a shape concave in a paraxial region.

The sixth lens 406 has a negative refractive power, a first surface of the sixth lens 406 has a shape that is concave in a paraxial region, and a second surface of the sixth lens 406 has a shape that is convex in a paraxial region.

The seventh lens 407 has a negative refractive power, a first surface of the seventh lens 407 has a shape that is convex in a paraxial region, and a second surface of the seventh lens 407 has a shape that is concave in a paraxial region.

The eighth lens 408 has a negative refractive power, a first surface of the eighth lens 408 has a shape convex in a paraxial region, and a second surface of the eighth lens 408 has a shape concave in a paraxial region.

The ninth lens 409 has a negative refractive power, the first surface of the ninth lens 409 has a shape concave in the paraxial region, and the second surface of the ninth lens 409 has a shape convex in the paraxial region.

The tenth lens 410 has a positive refractive power, the first surface of the tenth lens 410 has a convex shape in the paraxial region, and the second surface of the tenth lens 410 has a concave shape in the paraxial region.

The eleventh lens 411 has a negative refractive power, a first surface of the eleventh lens 411 has a shape convex in a paraxial region, and a second surface of the eleventh lens 411 has a shape concave in a paraxial region.

Further, at least one of the tenth lens 410 and the eleventh lens 411 has at least one inflection point formed on at least one of the first surface and the second surface.

In an example, each surface of the first lens 401 to the eleventh lens 411 has an aspherical coefficient as shown in table 8. For example, the object side surface and the image side surface of the first lens 401 to the eleventh lens 411 are both aspherical surfaces.

TABLE 8

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Further, the exemplary optical imaging system of the above configuration may have aberration characteristics shown in fig. 8.

An optical imaging system 500 according to a fifth embodiment of the present disclosure will be described with reference to fig. 9 and 10.

The optical imaging system 500 according to the fifth embodiment of the present disclosure may include a first lens 501, a second lens 502, a third lens 503, a fourth lens 504, a fifth lens 505, a sixth lens 506, a seventh lens 507, an eighth lens 508, a ninth lens 509, a tenth lens 510, and an eleventh lens 511, and may further include a filter 512 and an image sensor IS.

The optical imaging system 500 according to the fifth embodiment of the present disclosure may form a focal point on the imaging surface 513. Imaging surface 513 may refer to a surface on which a focal point is formed by an optical imaging system. For example, the imaging surface 513 may refer to one surface of the image sensor IS on which light IS received.

The lens characteristics (radius of curvature, thickness of lenses or distance between lenses, refractive index, abbe number, and focal length) of each lens are shown in table 9.

TABLE 9

In an example, the total focal length f of the optical imaging system 500 according to the fifth embodiment of the present disclosure is 6.85mm, fno is 1.497, and IMG HT is 6.15mm.

In the fifth embodiment of the present disclosure, the first lens 501 has a positive refractive power, the first surface of the first lens 501 has a shape convex in a paraxial region, and the second surface of the first lens 501 has a shape concave in a paraxial region.

The second lens 502 has a positive refractive power, the first surface of the second lens 502 has a shape that is convex in the paraxial region, and the second surface of the second lens 502 has a shape that is concave in the paraxial region.

The third lens 503 has a positive refractive power, a first surface of the third lens 503 has a shape convex in a paraxial region, and a second surface of the third lens 503 has a shape concave in a paraxial region.

The fourth lens 504 has a negative refractive power, a first surface of the fourth lens 504 has a shape convex in a paraxial region, and a second surface of the fourth lens 504 has a shape concave in a paraxial region.

The fifth lens 505 has a positive refractive power, a first surface of the fifth lens 505 has a shape convex in a paraxial region, and a second surface of the fifth lens 505 has a shape concave in a paraxial region.

The sixth lens 506 has a negative refractive power, a first surface of the sixth lens 506 has a concave shape in a paraxial region, and a second surface of the sixth lens 506 has a convex shape in a paraxial region.

The seventh lens 507 has a negative refractive power, a first surface of the seventh lens 507 has a convex shape in a paraxial region, and a second surface of the seventh lens 507 has a concave shape in a paraxial region.

The eighth lens 508 has a negative refractive power, a first surface of the eighth lens 508 has a shape convex in a paraxial region, and a second surface of the eighth lens 508 has a shape concave in a paraxial region.

The ninth lens 509 has a negative refractive power, a first surface of the ninth lens 509 has a shape concave in a paraxial region, and a second surface of the ninth lens 509 has a shape convex in the paraxial region.

The tenth lens 510 has a positive refractive power, a first surface of the tenth lens 510 has a shape convex in a paraxial region, and a second surface of the tenth lens 510 has a shape concave in a paraxial region.

The eleventh lens 511 has a negative refractive power, a first surface of the eleventh lens 511 has a shape convex in a paraxial region, and a second surface of the eleventh lens 511 has a shape concave in a paraxial region.

In addition, at least one of the tenth lens 510 and the eleventh lens 511 has at least one inflection point formed on at least one of the first surface and the second surface.

In an example, each surface of the first lens 501 to the eleventh lens 511 has an aspherical coefficient as shown in table 10. For example, the object side surface and the image side surface of the first lens 501 to the eleventh lens 511 are both aspherical surfaces.

Table 10

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Further, the exemplary optical imaging system of the above configuration may have aberration characteristics shown in fig. 10.

An optical imaging system 600 according to a sixth embodiment of the present disclosure will be described with reference to fig. 11 and 12.

The optical imaging system 600 according to the sixth embodiment of the present disclosure may include a first lens 601, a second lens 602, a third lens 603, a fourth lens 604, a fifth lens 605, a sixth lens 606, a seventh lens 607, an eighth lens 608, a ninth lens 609, a tenth lens 610, and an eleventh lens 611, and may further include a filter 612 and an image sensor IS.

The optical imaging system 600 according to the sixth embodiment of the present disclosure may form a focal point on the imaging surface 613. Imaging surface 613 may refer to the surface on which the focal point is formed by the optical imaging system. For example, the imaging surface 613 may refer to one surface of the image sensor IS on which light IS received.

The lens characteristics (radius of curvature, thickness of lenses or distance between lenses, refractive index, abbe number, and focal length) of each lens are shown in table 11.

TABLE 11

In an example, the optical imaging system 600 according to the sixth embodiment of the present disclosure has a total focal length f of 7.9458mm, a fno of 1.69, and an IMG HT of 6.96mm.

In the sixth embodiment of the present disclosure, the first lens 601 has a positive refractive power, the first surface of the first lens 601 has a shape convex in a paraxial region, and the second surface of the first lens 601 has a shape concave in a paraxial region.

The second lens 602 has a positive refractive power, the first surface of the second lens 602 has a shape that is convex in the paraxial region, and the second surface of the second lens 602 has a shape that is concave in the paraxial region.

The third lens 603 has a negative refractive power, a first surface of the third lens 603 has a shape convex in a paraxial region, and a second surface of the third lens 603 has a shape concave in a paraxial region.

The fourth lens 604 has a positive refractive power, a first surface of the fourth lens 604 has a shape convex in a paraxial region, and a second surface of the fourth lens 604 has a shape concave in a paraxial region.

The fifth lens 605 has a negative refractive power, a first surface of the fifth lens 605 has a shape that is concave in a paraxial region, and a second surface of the fifth lens 605 has a shape that is convex in a paraxial region.

The sixth lens 606 has a positive refractive power, a first surface of the sixth lens 606 has a concave shape in a paraxial region, and a second surface of the sixth lens 606 has a convex shape in a paraxial region.

The seventh lens 607 has a negative refractive power, the first surface of the seventh lens 607 has a shape which is convex in the paraxial region, and the second surface of the seventh lens 607 has a shape which is concave in the paraxial region.

The eighth lens 608 has a negative refractive power, a first surface of the eighth lens 608 has a shape convex in a paraxial region, and a second surface of the eighth lens 608 has a shape concave in a paraxial region.

The ninth lens 609 has a negative refractive power, the first surface of the ninth lens 609 has a concave shape in the paraxial region, and the second surface of the ninth lens 609 has a convex shape in the paraxial region.

The tenth lens 610 has a positive refractive power, a first surface of the tenth lens 610 has a shape convex in a paraxial region, and a second surface of the tenth lens 610 has a shape concave in a paraxial region.

The eleventh lens 611 has a negative refractive power, a first surface of the eleventh lens 611 has a shape convex in a paraxial region, and a second surface of the eleventh lens 611 has a shape concave in a paraxial region.

In addition, at least one of the tenth lens 610 and the eleventh lens 611 has at least one inflection point formed on at least one of the first surface and the second surface.

In an example, each surface of the first lens 601 to the eleventh lens 611 has an aspherical coefficient as shown in table 12. For example, the object side surface and the image side surface of the first lens 601 to the eleventh lens 611 are both aspherical surfaces.

Table 12

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Further, the exemplary optical imaging system of the above configuration may have aberration characteristics shown in fig. 12.

An optical imaging system 700 according to a seventh embodiment of the present disclosure will be described with reference to fig. 13 and 14.

The optical imaging system 700 according to the seventh embodiment of the present disclosure may include a first lens 701, a second lens 702, a third lens 703, a fourth lens 704, a fifth lens 705, a sixth lens 706, a seventh lens 707, an eighth lens 708, a ninth lens 709, a tenth lens 710, and an eleventh lens 711, and may further include a filter 712 and an image sensor IS.

The optical imaging system 700 according to the seventh embodiment of the present disclosure may form a focal point on the imaging surface 713. Imaging surface 713 may refer to a surface on which a focal point is formed by an optical imaging system. For example, the imaging surface 713 may refer to one surface of the image sensor IS on which light IS received.

The lens characteristics (radius of curvature, thickness of lenses or distance between lenses, refractive index, abbe number, and focal length) of each lens are shown in table 13.

TABLE 13

In one example, the total focal length f of the optical imaging system 700 according to the seventh embodiment of the present disclosure is 6.85mm, fno is 1.609 mm, and IMG HT is 6.15mm.

In the seventh embodiment of the present disclosure, the first lens 701 has a positive refractive power, the first surface of the first lens 701 has a shape convex in a paraxial region, and the second surface of the first lens 701 has a shape concave in a paraxial region.

The second lens 702 has a positive refractive power, a first surface of the second lens 702 has a shape convex in a paraxial region, and a second surface of the second lens 702 has a shape concave in a paraxial region.

The third lens 703 has a negative refractive power, a first surface of the third lens 703 has a shape convex in a paraxial region, and a second surface of the third lens 703 has a shape concave in a paraxial region.

The fourth lens 704 has a positive refractive power, a first surface of the fourth lens 704 has a shape that is convex in a paraxial region, and a second surface of the fourth lens 704 has a shape that is concave in a paraxial region.

The fifth lens 705 has a positive refractive power, a first surface of the fifth lens 705 has a concave shape in a paraxial region, and a second surface of the fifth lens 705 has a convex shape in a paraxial region.

The sixth lens 706 has a negative refractive power, a first surface of the sixth lens 706 has a convex shape in a paraxial region, and a second surface of the sixth lens 706 has a concave shape in a paraxial region.

The seventh lens 707 has a negative refractive power, a first surface of the seventh lens 707 has a shape that is convex in a paraxial region, and a second surface of the seventh lens 707 has a shape that is concave in a paraxial region.

The eighth lens 708 has a negative refractive power, a first surface of the eighth lens 708 has a concave shape in a paraxial region, and a second surface of the eighth lens 708 has a convex shape in a paraxial region.

The ninth lens 709 has a positive refractive power, a first surface of the ninth lens 709 has a shape protruding in a paraxial region, and a second surface of the ninth lens 709 has a shape recessed in the paraxial region.

The tenth lens 710 has a positive refractive power, a first surface of the tenth lens 710 has a concave shape in a paraxial region, and a second surface of the tenth lens 710 has a convex shape in a paraxial region.

The eleventh lens 711 has a negative refractive power, a first surface of the eleventh lens 711 has a shape convex in a paraxial region, and a second surface of the eleventh lens 711 has a shape concave in a paraxial region.

In addition, at least one of the tenth lens 710 and the eleventh lens 711 has at least one inflection point formed on at least one of the first surface and the second surface.

In an example, each surface of the first lens 701 to the eleventh lens 711 has an aspherical coefficient as shown in table 14. For example, the object side surface and the image side surface of the first lens 701 to the eleventh lens 711 are both aspherical surfaces.

TABLE 14

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Further, the exemplary optical imaging system of the above configuration may have aberration characteristics shown in fig. 14.

An optical imaging system 800 according to an eighth embodiment of the present disclosure will be described with reference to fig. 15 and 16.

The optical imaging system 800 according to the eighth embodiment of the present disclosure may include a first lens 801, a second lens 802, a third lens 803, a fourth lens 804, a fifth lens 805, a sixth lens 806, a seventh lens 807, an eighth lens 808, a ninth lens 809, a tenth lens 810, and an eleventh lens 811, and may further include a filter 812 and an image sensor IS.

The optical imaging system 800 according to the eighth embodiment of the present disclosure may form a focal point on the imaging surface 813. Imaging surface 813 may refer to the surface on which a focal point is formed by an optical imaging system. For example, the imaging surface 813 may refer to one surface of the image sensor IS on which light IS received.

The lens characteristics (radius of curvature, thickness of lenses or distance between lenses, refractive index, abbe number, and focal length) of each lens are shown in table 15.

TABLE 15

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In an example, the optical imaging system 800 according to the eighth embodiment of the present disclosure has a total focal length f of 6.8498mm, fno of 1.609, and IMG HT of 6.15mm.

In the eighth embodiment of the present disclosure, the first lens 801 has a positive refractive power, the first surface of the first lens 801 has a shape convex in a paraxial region, and the second surface of the first lens 801 has a shape concave in a paraxial region.

The second lens 802 has a positive refractive power, the first surface of the second lens 802 has a shape that is convex in the paraxial region, and the second surface of the second lens 802 has a shape that is concave in the paraxial region.

The third lens 803 has a negative refractive power, a first surface of the third lens 803 has a shape convex in a paraxial region, and a second surface of the third lens 803 has a shape concave in a paraxial region.

The fourth lens 804 has a positive refractive power, the first surface of the fourth lens 804 has a shape convex in a paraxial region, and the second surface of the fourth lens 804 has a shape concave in a paraxial region.

The fifth lens 805 has a negative refractive power, a first surface of the fifth lens 805 has a concave shape in a paraxial region, and a second surface of the fifth lens 805 has a convex shape in a paraxial region.

The sixth lens 806 has a negative refractive power, a first surface of the sixth lens 806 has a shape that is convex in a paraxial region, and a second surface of the sixth lens 806 has a shape that is concave in a paraxial region.

The seventh lens 807 has a negative refractive power, the first surface of the seventh lens 807 has a convex shape in the paraxial region, and the second surface of the seventh lens 807 has a concave shape in the paraxial region.

The eighth lens 808 has a negative refractive power, a first surface of the eighth lens 808 has a concave shape in a paraxial region, and a second surface of the eighth lens 808 has a convex shape in a paraxial region.

The ninth lens 809 has a positive refractive power, a first surface of the ninth lens 809 has a shape convex in a paraxial region, and a second surface of the ninth lens 809 has a shape concave in the paraxial region.

The tenth lens 810 has a negative refractive power, a first surface of the tenth lens 810 has a shape convex in a paraxial region, and a second surface of the tenth lens 810 has a shape concave in a paraxial region.

The eleventh lens 811 has a negative refractive power, a first surface of the eleventh lens 811 has a shape convex in a paraxial region, and a second surface of the eleventh lens 811 has a shape concave in a paraxial region.

In addition, at least one of the tenth lens 810 and the eleventh lens 811 has at least one inflection point formed on at least one of the first surface and the second surface.

In an example, each surface of the first lens 801 to the eleventh lens 811 has an aspherical coefficient as shown in table 16. For example, the object side surface and the image side surface of the first lens 801 to the eleventh lens 811 are both aspherical surfaces.

Table 16

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Further, the exemplary optical imaging system of the above configuration may have aberration characteristics shown in fig. 16.

An optical imaging system 900 according to a ninth embodiment of the present disclosure will be described with reference to fig. 17 and 18.

The optical imaging system 900 according to the ninth embodiment of the present disclosure may include a first lens 901, a second lens 902, a third lens 903, a fourth lens 904, a fifth lens 905, a sixth lens 906, a seventh lens 907, an eighth lens 908, a ninth lens 909, a tenth lens 910, and an eleventh lens 911, and may further include a filter 912 and an image sensor IS.

The optical imaging system 900 according to the ninth embodiment of the present disclosure may form a focal point on the imaging surface 913. Imaging surface 913 may refer to a surface on which a focal point is formed by an optical imaging system. For example, the imaging surface 913 may refer to one surface of the image sensor IS on which light IS received.

The lens characteristics (radius of curvature, thickness of lenses or distance between lenses, refractive index, abbe number, and focal length) of each lens are shown in table 17.

TABLE 17

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In an example, the optical imaging system 900 according to the ninth embodiment of the present disclosure has a total focal length f of 6.8379mm, fno of 1.609 mm, and IMG HT of 6.15mm.

In the ninth embodiment of the present disclosure, the first lens 901 has a positive refractive power, the first surface of the first lens 901 has a shape convex in a paraxial region, and the second surface of the first lens 901 has a shape concave in a paraxial region.

The second lens 902 has a positive refractive power, a first surface of the second lens 902 has a shape convex in a paraxial region, and a second surface of the second lens 902 has a shape concave in a paraxial region.

The third lens 903 has a negative refractive power, a first surface of the third lens 903 has a shape convex in a paraxial region, and a second surface of the third lens 903 has a shape concave in a paraxial region.

The fourth lens 904 has a positive refractive power, a first surface of the fourth lens 904 has a shape convex in a paraxial region, and a second surface of the fourth lens 904 has a shape concave in a paraxial region.

The fifth lens 905 has a negative refractive power, a first surface of the fifth lens 905 has a shape concave in a paraxial region, and a second surface of the fifth lens 905 has a shape convex in a paraxial region.

The sixth lens 906 has a negative refractive power, a first surface of the sixth lens 906 has a shape convex in a paraxial region, and a second surface of the sixth lens 906 has a shape concave in a paraxial region.

The seventh lens 907 has a negative refractive power, a first surface of the seventh lens 907 has a shape that is convex in a paraxial region, and a second surface of the seventh lens 907 has a shape that is concave in a paraxial region.

The eighth lens 908 has a negative refractive power, a first surface of the eighth lens 908 has a concave shape in a paraxial region, and a second surface of the eighth lens 908 has a convex shape in a paraxial region.

The ninth lens 909 has a positive refractive power, the first surface of the ninth lens 909 has a shape convex in the paraxial region, and the second surface of the ninth lens 909 has a shape concave in the paraxial region.

The tenth lens 910 has a negative refractive power, the first surface of the tenth lens 910 has a shape convex in the paraxial region, and the second surface of the tenth lens 910 has a shape concave in the paraxial region.

The eleventh lens 911 has a positive refractive power, a first surface of the eleventh lens 911 has a shape convex in a paraxial region, and a second surface of the eleventh lens 911 has a shape concave in a paraxial region.

Further, at least one of the tenth lens 910 and the eleventh lens 911 has at least one inflection point formed on at least one of the first surface and the second surface.

In an example, each surface of the first lens 901 to the eleventh lens 911 has an aspherical coefficient as shown in table 18. For example, the object side surface and the image side surface of the first lens 901 to the eleventh lens 911 are both aspherical surfaces.

TABLE 18

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Further, the exemplary optical imaging system of the above configuration may have aberration characteristics shown in fig. 18.

An optical imaging system 1000 according to a tenth embodiment of the present disclosure will be described with reference to fig. 19 and 20.

The optical imaging system 1000 according to the tenth embodiment of the present disclosure may include a first lens 1001, a second lens 1002, a third lens 1003, a fourth lens 1004, a fifth lens 1005, a sixth lens 1006, a seventh lens 1007, an eighth lens 1008, a ninth lens 1009, a tenth lens 1010, and an eleventh lens 1011, and may further include a filter 1012 and an image sensor IS.

The optical imaging system 1000 according to the tenth embodiment of the present disclosure may form a focus on the imaging surface 1013. Imaging surface 1013 may refer to a surface on which a focal point is formed by an optical imaging system. For example, the imaging surface 1013 may refer to one surface of the image sensor IS on which light IS received.

The lens characteristics (radius of curvature, thickness of lenses or distance between lenses, refractive index, abbe number, and focal length) of each lens are shown in table 19.

TABLE 19

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In an example, the total focal length f of the optical imaging system 1000 according to the tenth embodiment of the present disclosure is 6.85mm, fno is 1.609, and IMG HT is 6.15mm.

In the tenth embodiment of the present disclosure, the first lens 1001 has a positive refractive power, the first surface of the first lens 1001 has a shape convex in a paraxial region, and the second surface of the first lens 1001 has a shape concave in a paraxial region.

The second lens 1002 has a positive refractive power, a first surface of the second lens 1002 has a shape convex in a paraxial region, and a second surface of the second lens 1002 has a shape concave in a paraxial region.

The third lens 1003 has a negative refractive power, a first surface of the third lens 1003 has a convex shape in a paraxial region, and a second surface of the third lens 1003 has a concave shape in a paraxial region.

The fourth lens 1004 has a positive refractive power, a first surface of the fourth lens 1004 has a shape convex in a paraxial region, and a second surface of the fourth lens 1004 has a shape concave in a paraxial region.

The fifth lens 1005 has a positive refractive power, a first surface of the fifth lens 1005 has a shape concave in a paraxial region, and a second surface of the fifth lens 1005 has a shape convex in a paraxial region.

The sixth lens 1006 has a negative refractive power, a first surface of the sixth lens 1006 has a shape convex in a paraxial region, and a second surface of the sixth lens 1006 has a shape concave in a paraxial region.

The seventh lens 1007 has a negative refractive power, the first surface of the seventh lens 1007 has a shape convex in a paraxial region, and the second surface of the seventh lens 1007 has a shape concave in a paraxial region.

The eighth lens 1008 has a negative refractive power, a first surface of the eighth lens 1008 has a shape that is concave in a paraxial region, and a second surface of the eighth lens 1008 has a shape that is convex in a paraxial region.

The ninth lens 1009 has a positive refractive power, a first surface of the ninth lens 1009 has a shape convex in a paraxial region, and a second surface of the ninth lens 1009 has a shape concave in a paraxial region.

The tenth lens 1010 has a negative refractive power, a first surface of the tenth lens 1010 has a shape convex in a paraxial region, and a second surface of the tenth lens 1010 has a shape concave in a paraxial region.

The eleventh lens 1011 has a positive refractive power, a first surface of the eleventh lens 1011 has a concave shape in a paraxial region, and a second surface of the eleventh lens 1011 has a convex shape in a paraxial region.

Further, at least one of the tenth lens 1010 and the eleventh lens 1011 has at least one inflection point formed on at least one of the first surface and the second surface.

In an example, each surface of the first lens 1001 to the eleventh lens 1011 has an aspherical coefficient as shown in table 20. For example, the object side surface and the image side surface of the first lens 1001 to the eleventh lens 1011 are both aspherical surfaces.

Table 20

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Further, the exemplary optical imaging system of the above configuration may have aberration characteristics shown in fig. 20.

An optical imaging system 1100 according to an eleventh embodiment of the present disclosure will be described with reference to fig. 21 and 22.

The optical imaging system 1100 according to the eleventh embodiment of the present disclosure may include a first lens 1101, a second lens 1102, a third lens 1103, a fourth lens 1104, a fifth lens 1105, a sixth lens 1106, a seventh lens 1107, an eighth lens 1108, a ninth lens 1109, a tenth lens 1110, and an eleventh lens 1111, and may further include a filter 1112 and an image sensor IS.

The optical imaging system 1100 according to the eleventh embodiment of the present disclosure may form a focal point on the imaging surface 1113. Imaging surface 1113 may refer to a surface on which a focal point is formed by an optical imaging system. For example, the imaging surface 1113 may refer to one surface of the image sensor IS on which light IS received.

The lens characteristics (radius of curvature, thickness of lenses or distance between lenses, refractive index, abbe number, and focal length) of each lens are shown in table 21.

Table 21

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In an example, the total focal length f of the optical imaging system 1100 according to the eleventh embodiment of the present disclosure is 6.8mm, fno is 1.479, and IMG HT is 6.15mm.

In the eleventh embodiment of the present disclosure, the first lens 1101 has a positive refractive power, the first surface of the first lens 1101 has a shape concave in a paraxial region, and the second surface of the first lens 1101 has a shape convex in a paraxial region.

The second lens 1102 has a positive refractive power, the first surface of the second lens 1102 has a shape convex in a paraxial region, and the second surface of the second lens 1102 has a shape concave in a paraxial region.

The third lens 1103 has a positive refractive power, a first surface of the third lens 1103 has a shape that is convex in a paraxial region, and a second surface of the third lens 1103 has a shape that is concave in a paraxial region.

The fourth lens 1104 has a negative refractive power, the first surface of the fourth lens 1104 has a shape that is convex in the paraxial region, and the second surface of the fourth lens 1104 has a shape that is concave in the paraxial region.

The fifth lens 1105 has a positive refractive power, a first surface of the fifth lens 1105 has a shape that is convex in a paraxial region, and a second surface of the fifth lens 1105 has a shape that is concave in a paraxial region.

The sixth lens 1106 has a negative refractive power, a first surface of the sixth lens 1106 has a concave shape in a paraxial region, and a second surface of the sixth lens 1106 has a convex shape in a paraxial region.

The seventh lens 1107 has a negative refractive power, a first surface of the seventh lens 1107 has a shape that is convex in a paraxial region, and a second surface of the seventh lens 1107 has a shape that is concave in a paraxial region.

The eighth lens 1108 has a negative refractive power, and the first surface and the second surface of the eighth lens 1108 have a concave shape in a paraxial region.

The ninth lens 1109 has a negative refractive power, a first surface of the ninth lens 1109 has a concave shape in a paraxial region, and a second surface of the ninth lens 1109 has a convex shape in a paraxial region.

The tenth lens 1110 has a positive refractive power, a first surface of the tenth lens 1110 has a shape that is convex in the paraxial region, and a second surface of the tenth lens 1110 has a shape that is concave in the paraxial region.

The eleventh lens 1111 has a negative refractive power, a first surface of the eleventh lens 1111 has a convex shape in a paraxial region, and a second surface of the eleventh lens 1111 has a concave shape in a paraxial region.

Further, at least one of the tenth lens 1110 and the eleventh lens 1111 has at least one inflection point formed on at least one of the first surface and the second surface.

In an example, each surface of the first lens 1101 to the eleventh lens 1111 has an aspherical coefficient as shown in table 22. For example, the object side surface and the image side surface of the first lens 1101 to the eleventh lens 1111 are both aspherical surfaces.

Table 22

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In addition, the optical imaging system configured as described above may have aberration characteristics shown in fig. 22.

Table 23 shows the conditional equation values of the optical imaging system according to each embodiment.

Table 23

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According to the optical imaging system of one or more exemplary embodiments of the present disclosure described herein, it is possible to reduce the size thereof while achieving high resolution.

While specific examples have been shown and described above, it will be apparent, after an understanding of the present disclosure, that various changes in form and details may be made therein without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be construed in an illustrative, and not a restrictive sense. The description of features or aspects in each example should be considered as applicable to similar features or aspects in other examples. Suitable results may still be achieved if the described techniques are performed in a different order and/or if components in the described systems, architectures, devices or circuits are combined in a different manner and/or replaced or supplemented by other components or their equivalents. Thus, the scope of the disclosure is not to be limited by the specific embodiments, but by the claims and their equivalents, and all modifications within the scope of the claims and their equivalents are to be construed as being included in the disclosure.

Claims (20)

1. An optical imaging system, comprising:

A first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, and an eleventh lens arranged in order from the object side,

Wherein the first lens has a positive refractive power and the second lens has a positive refractive power,

Wherein the eleventh lens has at least one inflection point on at least one of an object side and an image side thereof,

Wherein 0.6< TTL/(2×IMG HT) <0.8 and Nv 26. Gtoreq.4 are satisfied, wherein TTL is the distance on the optical axis from the object side surface of the first lens to the imaging surface, IMG HT is half the diagonal length of the imaging surface, and Nv26 is the number of lenses having Abbe number less than 26, and

Wherein the optical imaging system has a total of eleven lenses.

2. The optical imaging system of claim 1, wherein 10< f1/f2<150 is satisfied, where f1 is a focal length of the first lens and f2 is a focal length of the second lens.

3. The optical imaging system of claim 1, wherein 1.15< ttl/f <1.3 is satisfied, where f is the total focal length of the optical imaging system.

4. The optical imaging system of claim 1, wherein 30< v2-v3<40 is satisfied, where v2 is the abbe number of the second lens and v3 is the abbe number of the third lens.

5. The optical imaging system according to claim 1, wherein at least two lenses arranged in succession among the first to seventh lenses have an abbe number of less than 26.

6. The optical imaging system of claim 5, wherein at least one of the third to fifth lenses has a refractive index greater than 1.63 and an abbe number less than 24.

7. The optical imaging system of claim 6, wherein at least two of the sixth lens to the eighth lens have a refractive index greater than 1.61 and an abbe number less than 26.

8. The optical imaging system of claim 1, wherein 29< |v1-v3| <40 is satisfied, where v1 is the abbe number of the first lens and v3 is the abbe number of the third lens.

9. The optical imaging system of claim 1, wherein 30< v2-v6<40 is satisfied, where v2 is the abbe number of the second lens and v6 is the abbe number of the sixth lens.

10. The optical imaging system of claim 1, wherein the second lens has a thickness on an optical axis that is thicker than a thickness on an optical axis of the first lens.

11. The optical imaging system of claim 10, wherein 1.5< T2/T1<3 is satisfied, wherein T1 is a thickness on the optical axis of the first lens and T2 is a thickness on the optical axis of the second lens.

12. The optical imaging system of claim 1, wherein 0.25< D15/TTL <0.45 is satisfied, wherein D15 is a distance on the optical axis from the object side of the first lens to an image side of the fifth lens.

13. The optical imaging system of claim 1, wherein 1.4< Fno <1.7 is satisfied, wherein Fno is an F-number of the optical imaging system.

14. The optical imaging system of claim 1, wherein |f345|+|f678| <0.3mm is satisfied, wherein f345 is a composite focal length of the third lens, the fourth lens, and the fifth lens, and f678 is a composite focal length of the sixth lens, the seventh lens, and the eighth lens.

15. The optical imaging system of claim 1, wherein 0.5< |f345/f678| <3 is satisfied, wherein f345 is a composite focal length of the third lens, the fourth lens, and the fifth lens, and f678 is a composite focal length of the sixth lens, the seventh lens, and the eighth lens.

16. The optical imaging system of claim 1, wherein each of the second to fourth lenses has a convex object side and a concave image side.

17. An optical imaging system, comprising:

A first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, and an eleventh lens arranged in order from the object side,

Wherein the first lens and the second lens each have a positive refractive power,

Wherein the seventh lens and the eighth lens each have a negative refractive power,

Wherein 0.6< TTL/(2×IMG HT) <0.8 and 1.4< FNo <1.7 are satisfied, wherein TTL is the distance on the optical axis from the object side of the first lens to the imaging surface, IMG HT is half the diagonal length of the imaging surface, and FNo is the F-number of the optical imaging system, and

Wherein the optical imaging system has a total of eleven lenses.

18. The optical imaging system of claim 17, wherein adjacent ones of the first to eleventh lenses are spaced apart from each other.

19. The optical imaging system of claim 17, wherein Nv26 ≡4 is satisfied, wherein Nv26 is the number of lenses having abbe numbers smaller than 26.

20. The optical imaging system of claim 17, wherein the seventh lens has a concave image side.