Optical image capturing system

Abstract

The optical imaging system includes: a first lens group including at least one lens disposed in a direction of a first optical axis; a second lens group including at least one lens disposed in a direction of a second optical axis perpendicular to the first optical axis; and a prism disposed between the first lens group and the second lens group to convert the path of the light from the first optical axis to the second optical axis. The conditional expression 0.20 lt is satisfied; d (LG1P) / d (PLG2) lt; 0.60 where d (LG1P) is a distance on the first optical axis from an image side surface of a lens disposed closest to the image side in the first lens group to an incident surface of the prism, and d (PLG2) is a distance on the second optical axis from an exit surface of the prism to an object side surface of a lens disposed closest to the object side in the second lens group.

Description

[0001] Cross - reference to related applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10 - 2023 - 0130723, filed on September 27, 2023, and Korean Patent Application No. 10 - 2024 - 0005236, filed on January 12, 2024, with the Korean Intellectual Property Office, the entire disclosures of which are incorporated herein by reference for all purposes. Technical field

[0003] The present disclosure relates to an optical imaging system. Background art

[0004] Recently, in the camera market for mobile devices, the demand for thin and high - magnification telephoto camera modules has increased. Since a high - magnification telephoto camera module requires a long focal length, there may be a problem that physically, the total length of the camera module must increase. Therefore, a prism that changes the path of incident light is arranged on the object side of a plurality of lenses to ensure the total length of the camera module. However, with this structure, there are limitations in increasing the diameter of the lens, which may make it difficult to reduce the F - number.

[0005] The above information is presented as background information only to assist in understanding the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above constitutes prior art with respect to the present disclosure. Summary of the utility model

[0006] The present summary section is intended to introduce, in brief form, a selection of concepts that will be further described in the detailed implementation section below. The present summary section is not intended to identify key features 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 group including at least one lens disposed in a direction of a first optical axis; a second lens group including at least one lens disposed in a direction of a second optical axis perpendicular to the first optical axis; and a prism disposed between the first lens group and the second lens group and configured to convert the path of light from the direction of the first optical axis to the direction of the second optical axis, where the condition expression 0.20 < d(LG1P) / d(PLG2) < 0.60 is satisfied, where d(LG1P) is the distance on the first optical axis from the image side surface of the lens closest to the image side in the first lens group to the incident surface of the prism, and d(PLG2) is the distance on the second optical axis from the exit surface of the prism to the object side surface of the lens closest to the object side in the second lens group.

[0008] The first lens group may include a first lens having a positive refractive power, and the second lens group may include a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens having a refractive power, a fifth lens having a positive refractive power, and a sixth lens having a negative refractive power.

[0009] The optical imaging system may satisfy the conditional expression 0.70mm -1 ≤Fno / dP1<1.00mm -1 , where Fno is the F-number of the optical imaging system, and dP1 is the distance on the first optical axis from the incident surface of the prism to the reflecting surface of the prism.

[0010] The optical imaging system may satisfy the conditional expression 0.95≤fLG1 / fLG2≤3.50, where fLG1 is the focal length of the first lens group, and fLG2 is the focal length of the second lens group.

[0011] The optical imaging system may satisfy the conditional expression 2.20≤Fno<3.20.

[0012] The optical imaging system may satisfy the conditional expression 8.00mm<dLG12<11.00mm, where dLG12 is the distance from the image side surface of the lens closest to the image side in the first lens group to the object side surface of the lens closest to the object side in the second lens group.

[0013] The optical imaging system may satisfy the conditional expression 0.10≤f / fLG1<0.60, where f is the total focal length of the optical imaging system.

[0014] The optical imaging system may satisfy the conditional expression 0.50≤f / fLG2<0.95.

[0015] The optical imaging system may satisfy the conditional expression 0.20<dLG2 / OAL≤0.40, where dLG2 is the distance on the second optical axis from the object side surface of the lens closest to the object side in the second lens group to the image side surface of the lens closest to the image side in the second lens group, and OAL is the sum of the distance on the first optical axis from the object side surface of the lens closest to the object side in the first lens group to the reflecting surface of the prism and the distance on the second optical axis from the reflecting surface of the prism to the image plane.

[0016] In another general aspect, an optical imaging system includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens sequentially arranged from an object side toward an image side; and a prism disposed between the first lens and the second lens to convert a path of incident light from a direction of a first optical axis to a direction of a second optical axis, where a conditional expression 8.00 mm < dLG12 < 11.00 mm is satisfied, where dLG12 is a distance from an image side surface of the first lens to an object side surface of the second lens.

[0017] The third lens may have a negative refractive power, and both an object side surface and an image side surface of the third lens may have a concave shape.

[0018] The optical imaging system may satisfy a conditional expression 17.00 mm < R1 + R2 < 30.00 mm, where R1 is a radius of curvature of an object side surface of the first lens, and R2 is a radius of curvature of an image side surface of the first lens.

[0019] The fourth lens may have a negative refractive power and a concave image side surface.

[0020] The optical imaging system may satisfy a conditional expression 0.20 < dLG2 / OAL ≤ 0.40, where dLG2 is a distance on the second optical axis from an object side surface of the second lens to an image side surface of the sixth lens, and OAL is a sum of a distance on the first optical axis from an object side surface of the first lens to a reflection surface of the prism and a distance on the second optical axis from the reflection surface of the prism to an image plane.

[0021] The optical imaging system may satisfy a conditional expression 0.20 ≤ OAL1 / OAL2 ≤ 0.35, where OAL1 is a distance on the first optical axis from an object side surface of the first lens to a reflection surface of the prism, and OAL2 is a distance on the second optical axis from the reflection surface of the prism to an image plane.

[0022] The first lens may form a first lens group, and the second lens to the sixth lens may form a second lens group.

[0023] The optical imaging system may satisfy a conditional expression 1.25 < ODL1 / PSi < 1.60, where ODL1 is a half of an outer diameter of the first lens, and PSi is a half of a length of an incident surface of the prism in a direction perpendicular to the first optical axis.

[0024] In another general aspect, an optical imaging system includes: a first lens group including a first lens having refractive power; a second lens group including a second lens having refractive power, a third lens having negative refractive power, a fourth lens having refractive power, a fifth lens having refractive power and a sixth lens having negative refractive power, which are arranged in sequence from the object side toward the image side; and a prism arranged between the first lens and the second lens to convert the path of incident light from the direction of the first optical axis to the direction of the second optical axis.

[0025] The third lens may have a concave object-side surface.

[0026] Other features and aspects will become apparent from the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1A is a structural diagram of an optical imaging system according to a first embodiment of the present disclosure.

[0028] Figure 1B is a graph showing aberration characteristics of the optical imaging system according to the first embodiment of the present disclosure.

[0029] Figure 2A is a structural diagram of an optical imaging system according to a second embodiment of the present disclosure.

[0030] Figure 2B is a graph showing aberration characteristics of the optical imaging system according to the second embodiment of the present disclosure.

[0031] Figure 3A is a structural diagram of an optical imaging system according to a third embodiment of the present disclosure.

[0032] Figure 3B is a graph showing aberration characteristics of the optical imaging system according to the third embodiment of the present disclosure.

[0033] Figure 4A is a structural diagram of an optical imaging system according to a fourth embodiment of the present disclosure.

[0034] Figure 4B is a graph showing aberration characteristics of the optical imaging system according to the fourth embodiment of the present disclosure.

[0035] Figure 5A is a structural diagram of an optical imaging system according to a fifth embodiment of the present disclosure.

[0036] Figure 5B is a graph showing aberration characteristics of an optical imaging system according to a fifth embodiment of the present disclosure.

[0037] Fig. 6Ais a structural diagram of an optical imaging system according to a sixth embodiment of the present disclosure.

[0038] Figure 6B is a graph showing aberration characteristics of the optical imaging system according to the sixth embodiment of the present disclosure.

[0039] Fig. 7A is a structural diagram of an optical imaging system according to a seventh embodiment of the present disclosure.

[0040] Figure 7B is a graph showing aberration characteristics of an optical imaging system according to a seventh embodiment of the present disclosure.

[0041] Fig. 8A is a structural diagram of an optical imaging system according to an eighth embodiment of the present disclosure.

[0042] Figure 8B is a graph showing aberration characteristics of the optical imaging system according to the eighth embodiment of the present disclosure.

[0043] Fig. 9A is a structural diagram of an optical imaging system according to a ninth embodiment of the present disclosure.

[0044] Fig. 9B is a graph showing aberration characteristics of an optical imaging system according to a ninth embodiment of the present disclosure.

[0045] Fig. 10A is a structural diagram of an optical imaging system according to a tenth embodiment of the present disclosure.

[0046] Fig. 10B is a graph showing aberration characteristics of the optical imaging system according to the tenth embodiment of the present disclosure.

[0047] Fig.11A is a structural diagram of an optical imaging system according to an eleventh embodiment of the present disclosure.

[0048] Fig. 11B is a graph showing aberration characteristics of the optical imaging system according to the eleventh embodiment of the present disclosure.

[0049] Fig. 12A is a structural diagram of an optical imaging system according to a twelfth embodiment of the present disclosure.

[0050] Fig. 12B is a graph showing aberration characteristics of the optical imaging system according to the twelfth embodiment of the present disclosure.

[0051] Fig.13A is a structural diagram of an optical imaging system according to a thirteenth embodiment of the present disclosure.

[0052] Fig. 13B is a graph showing aberration characteristics of the optical imaging system according to the thirteenth embodiment of the present disclosure.

[0053] Fig.14A is a structural diagram of an optical imaging system according to a fourteenth embodiment of the present disclosure.

[0054] Fig. 14B is a graph showing aberration characteristics of the optical imaging system according to the fourteenth embodiment of the present disclosure.

[0055] Fig.15A is a structural diagram of an optical imaging system according to the fifteenth embodiment of the present disclosure.

[0056] Fig. 15B is a graph showing aberration characteristics of the optical imaging system according to the fifteenth embodiment of the present disclosure.

[0057] Fig.16A is a structural diagram of an optical imaging system according to a sixteenth embodiment of the present disclosure.

[0058] Fig. 16B is a graph showing aberration characteristics of the optical imaging system according to the sixteenth embodiment of the present disclosure.

[0059] Fig.17A is a structural diagram of an optical imaging system according to the seventeenth embodiment of the present disclosure.

[0060] Fig. 17B is a graph showing aberration characteristics of the optical imaging system according to the seventeenth embodiment of the present disclosure.

[0061] Fig.18A is a structural diagram of an optical imaging system according to the eighteenth embodiment of the present disclosure.

[0062] Fig.18B is a graph showing aberration characteristics of the optical imaging system according to the eighteenth embodiment of the present disclosure.

[0063] Fig.19A is a structural diagram of an optical imaging system according to the nineteenth embodiment of the present disclosure.

[0064] Fig.19B is a graph showing aberration characteristics of the optical imaging system according to the nineteenth embodiment of the present disclosure.

[0065] Throughout the drawings and detailed description, unless otherwise described, the same reference numerals refer to the same elements. For purposes of clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative sizes, proportions, and depictions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0066] Hereinafter, although examples of the present disclosure will be described in detail with reference to the accompanying drawings, it should be noted that the examples are not limited thereto.

[0067] The following specific embodiments are provided to help the reader gain a comprehensive understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent after understanding the present disclosure. For example, the order of operations described herein is merely an example, and except for operations that must occur in a specific order, it is not limited to the order set forth herein, but can be changed, which will be apparent after understanding the present disclosure. In addition, for greater clarity and brevity, descriptions of features known in the art may be omitted.

[0068] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent after understanding the present disclosure.

[0069] Throughout the specification, when an element such as a layer, a region, or a substrate is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” the other element, or one or more other elements may be present between the element and the other element. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, no other elements may be present between the element and the other element.

[0070] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items; similarly, "at least one" includes any one of the associated listed items and any combination of any two or more items.

[0071] Although terms such as "first", "second" and "third" may be used herein to describe various members, components, regions, layers or portions, these members, components, regions, layers or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer or portion from another member, component, region, layer or portion. Therefore, without departing from the teachings of the examples described herein, the first member, first component, first region, first layer or first portion mentioned in these examples may also be referred to as the second member, second component, second region, second layer or second portion.

[0072] Spatially relative terms such as "above", "above", "below", "below", etc. may be used herein for descriptive convenience to describe the relationship of one element relative to another element as shown in the accompanying drawings. In addition to covering the orientations depicted in the accompanying drawings, these spatially relative terms are intended to also cover different orientations of the device in use or operation. For example, if the device in the accompanying drawings is flipped, an element described as being "above" or "above" another element relative to the other element will be "below" or "below" the other element relative to the other element. Therefore, depending on the spatial orientation of the device, the term "above" covers both orientations of "above" and "below". The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

[0073] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the terms "a", "an" and "the" are intended to include plural forms as well. The terms "include", "comprise" and "have" indicate the presence of the features, numbers, operations, components, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, components, elements and / or combinations thereof.

[0074] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0075] It should be noted that herein, use of the word “may” with respect to an example, such as regarding what an example may include or implement, means that there is at least one example in which such feature is included or implemented, and all examples are not limited thereto.

[0076] The features of the examples described herein may be combined in various ways that will be apparent after understanding the present disclosure. In addition, although the examples described herein have various configurations, other configurations that will be apparent after understanding the present disclosure are also possible.

[0077] One aspect of the present disclosure is to provide an optical imaging system with improved low-light image capture performance. In an example, such an optical imaging system can be used in a mobile telephoto camera module.

[0078] In this document, the values ​​of the radius of curvature, thickness, gap or distance of the lens, focal length, IMG HT (1 / 2 of the diagonal length of the image plane) and effective radius (half aperture) are all in millimeters (mm), and the unit of field of view (FOV) is degree. In addition, the thickness of the lens and the gap between the lenses refer to the thickness and gap on the optical axis, respectively.

[0079] Herein, the object side may indicate a direction in which the object is disposed, and the image side may indicate, for example, a direction in which an image plane on which an image is formed is disposed or a direction in which an image sensor is disposed. For example, the object side may indicate a direction in which the object is disposed along an optical axis, and the image side may indicate a direction in which an image plane in which an image can be formed is disposed along the optical axis.

[0080] In the description of the shape of a lens in this specification, the disclosure that a surface is convex means that the paraxial region of the corresponding surface is convex, and the disclosure that a surface is concave means that the paraxial region of the corresponding surface is concave. Therefore, even if one surface of a lens is described as having a convex shape, the edge of the lens may have a concave shape. Similarly, even if one surface of a lens is described as having a concave shape, the edge of the lens may have a convex shape.

[0081] The optical imaging system according to an exemplary embodiment of the present disclosure may be used in a telephoto camera module for a mobile device. For example, the mobile device may be any type of portable electronic device such as a mobile communication terminal, a smart phone, or a tablet PC.

[0082] According to an exemplary embodiment of the present disclosure, the optical imaging system may include six lenses. For example, the optical imaging system may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged sequentially from the object side toward the image side.

[0083] In addition, according to an exemplary embodiment of the present disclosure, the optical imaging system may include a plurality of lens groups. For example, the optical imaging system may include a first lens group and a second lens group, the first lens group and the second lens group are arranged sequentially from the object side toward the image side, and each includes at least one lens from the first lens to the sixth lens.

[0084] The optical imaging system according to an exemplary embodiment of the present disclosure may be composed not only of six lenses, but may also include an optical path conversion component for converting the path of incident light, an image sensor for converting the incident light into an electrical signal, an infrared cutoff filter for blocking light in the infrared range incident on the image sensor, and an aperture for controlling the amount of light.

[0085] According to an exemplary embodiment of the present disclosure, the optical path conversion member may be a prism, and the prism may be disposed between the first lens group and the second lens group. When correcting camera shake, the prism may be tilted relative to two axes (the optical path conversion member is described herein as a prism, but other types of reflective members (e.g., mirrors) capable of converting the optical path may be used instead of the prism). In addition, an infrared cut filter may be disposed between the sixth lens and the image sensor, and an aperture may be disposed inside the second lens group.

[0086] The optical imaging system according to an exemplary embodiment of the present disclosure may include a plastic lens. For example, at least some of the first to sixth lenses may be formed of plastic, for example, the first to sixth lenses may be formed of plastic.

[0087] In addition, the optical imaging system according to an exemplary embodiment of the present disclosure may include an aspherical lens. For example, at least one of the first lens to the sixth lens may be an aspherical lens, and in at least one of the first lens to the sixth lens, at least one of the object side surface and the image side surface may be aspherical. The aspherical surface of the lens is represented by Equation 1.

[0088] Equation 1:

[0089]

[0090] In Equation 1, c represents the inverse of the radius of curvature of the lens, K represents a quadratic constant, and Y represents the distance from an arbitrary point on the aspherical surface of the lens to the optical axis. In addition, constants A to H and J are aspherical constants from the fourth to twentieth order, and Z (or SAG) is the distance between an arbitrary point on the aspherical surface and the vertex of the corresponding aspherical surface in the optical axis direction.

[0091] In an exemplary embodiment of the present disclosure, the first lens group may be disposed on the object side of the prism and may include a first lens. The first lens may be disposed in the direction of the first optical axis c1. The second lens group may be disposed on the image side of the prism and may include second to sixth lenses. The second to sixth lenses may be disposed in the direction of the second optical axis c2.

[0092] The prism may be disposed between the first lens group and the second lens group to convert a path of incident light from a direction of the first optical axis c1 to a direction of the second optical axis c2. The directions of the first optical axis c1 and the second optical axis c2 may be substantially perpendicular to each other.

[0093] In an exemplary embodiment of the present disclosure, during shake correction of the camera module, the prism may be tilted at a predetermined angle relative to two axes perpendicular to the second optical axis c2. In addition, in an exemplary embodiment of the present disclosure, when adjusting the focus of the camera module, the second lens group may be moved in the direction of the second optical axis c2.

[0094] The optical imaging system according to the exemplary embodiment of the present disclosure may satisfy the following conditional expressions.

[0095] Conditional expression 1: 0.1 <f / f1≤0.6

[0096] Conditional expression 2: 0.20 ≤ OAL1 / OAL2 ≤ 0.35

[0097] Conditional expression 3: 2.20≤Fno<3.20

[0098] Conditional expression 4: 0.70 mm -1 ≤Fno / dP1<1.00mm -1

[0099] Conditional expression 5: 0.95≤fLG1 / fLG2≤3.50

[0100] Conditional expression 6: 0.10≤f / fLG1<0.60

[0101] Conditional expression 7: 0.50≤f / fLG2<0.95

[0102] Conditional expression 8: 0.20 <d(LG1P) / d(PLG2)<0.60

[0103] Conditional expression 9: 0.025≤d(LG1P) / OAL<0.070

[0104] Conditional expression 10: 0.08 <d(PLG2) / OAL<0.14

[0105] Conditional expression 11: 8.00mm <dLG12<11.00mm

[0106] Conditional expression 12: 1.20≤dP / (d(LG1P)+d(PLG2))≤2.00

[0107] Conditional expression 13: 1.25 <ODL1 / PSi<1.60

[0108] Conditional expression 14: 17.00mm <R1+R2<30.00mm

[0109] Conditional expression 15: 0.20 <dLG2 / OAL≤0.40

[0110] In Conditional Expression 1, f is the focal length of the entire optical imaging system, and f1 is the focal length of the first lens, and Conditional Expression 1 is related to the focal length range of the first lens to form an appropriate focal length for the telephoto camera module.

[0111] In conditional expression 2, OAL1 is the distance from the object side surface of the lens (or the first lens) disposed closest to the object side in the first lens group to the reflection surface of the prism on the first optical axis, and OAL2 is the distance from the reflection surface of the prism to the image surface on the second optical axis. Conditional expression 2 is related to the characteristic (lens lead-type optical system) in which the lens is disposed on the object side of the prism according to an embodiment of the present disclosure, and when the conditional expression deviates from the range, it may be difficult to manufacture the camera module in an appropriate size (length and thickness).

[0112] In Conditional Expression 3 and Conditional Expression 4, Fno is the F number of the optical imaging system, and dP1 is the distance from the incident surface of the prism to the reflection surface of the prism on the first optical axis. Conditional Expression 3 is related to the brightness of the telephoto camera module, and Conditional Expression 4 is related to the brightness performance of the lens-guided optical system according to the exemplary embodiment of the present disclosure.

[0113] In Conditional Expression 5 to Conditional Expression 7, fLG1 is the focal length of the first lens group, fLG2 is the focal length of the second lens group, and f is the focal length of the entire optical imaging system. Conditional Expression 5 to Conditional Expression 7 are related to the focal length range of the first lens group and the second lens group to form an appropriate focal length for the telephoto camera module.

[0114] In conditional expressions 8 to 10, d(LG1P) is the distance from the image side surface of the lens (or the first lens) disposed closest to the image side in the first lens group to the incident surface of the prism on the first optical axis, d(PLG2) is the distance from the exit surface of the prism to the object side surface of the lens (or the second lens) disposed closest to the object side in the second lens group on the second optical axis, and OAL is the sum of the distance from the object side surface of the lens (or the first lens) disposed closest to the object side in the first lens group to the reflection surface of the prism on the first optical axis and the distance from the reflection surface of the prism to the image surface on the second optical axis. Conditional expressions 8 and 10 are related to the characteristic that the gap between the prism and the second lens group according to the exemplary embodiment of the present disclosure is large, and are used for focus adjustment and shake correction operations. Conditional expression 9 is a condition for miniaturizing the camera module under the shape condition of the first lens.

[0115] In Conditional Expression 11, dLG12 is the sum of the distance from the image side surface of the lens (or the first lens) disposed closest to the image side in the first lens group to the reflection surface of the prism on the first optical axis and the distance from the reflection surface of the prism to the object side surface of the lens (or the second lens) disposed closest to the object side in the second lens group on the second optical axis (or the distance from the image side surface of the lens (or the first lens) disposed closest to the image side in the first lens group to the object side surface of the lens (or the second lens) disposed closest to the object side in the second lens group). Conditional Expression 11 is related to the characteristic that the gap between the prism and the first lens group and the second lens group according to the exemplary embodiment of the present disclosure is large.

[0116] In Conditional Expression 12 and Conditional Expression 13, dP is the sum of the distance from the incident surface of the prism to the reflection surface of the prism on the first optical axis and the distance from the reflection surface of the prism to the exit surface of the prism on the second optical axis, ODL1 is half of the outer diameter of the lens (or the first lens) disposed closest to the object side in the first lens group, and PSi is half of the length of the incident surface of the prism in the direction perpendicular to the first optical axis. Here, the direction perpendicular to the first optical axis may refer to a direction substantially parallel to the second optical axis among two directions perpendicular to the first optical axis. Conditional Expression 12 and Conditional Expression 13 are related to the miniaturization characteristics of the prism according to an exemplary embodiment of the present disclosure.

[0117] In Conditional Expression 14, R1 and R2 are the curvature radii of the object-side surface and the image-side surface of the first lens, respectively, and Conditional Expression 14 is related to the curvature (shape) condition of the first lens for prism miniaturization.

[0118] In Conditional Expression 15, dLG2 is a distance on the second optical axis from the object side surface of the lens (or the second lens) disposed closest to the object side in the second lens group to the image side surface of the lens (or the sixth lens) disposed closest to the image side in the second lens group. Conditional Expression 15 is related to the characteristic that the distance between the prism and the second lens group according to the exemplary embodiment of the present disclosure is large, and is intended to ensure a driving space.

[0119] Furthermore, the optical imaging system according to the exemplary embodiment of the present disclosure may also satisfy the following conditional expressions.

[0120] Conditional expression 16: 0.20 <d(LG1P) / dP1<0.50

[0121] Conditional Expression 17: 0.90≤dP1 / ODL2≤1.20

[0122] Conditional Expression 18: 0.50<(dLG1+d(LG1P)) / dP1≤1.00

[0123] Conditional expression 19: -0.30<(R1-R2) / (R1+R2)<0.00

[0124] Conditional expression 20: 0.10≤R3 / fLG2<0.25

[0125] Conditional Expression 21: 0.80≤d(PLG2) / dP1<1.10

[0126] Conditional expression 22: 1.35 <fLG1 / OAL<3.00

[0127] In Conditional Expression 16 and Conditional Expression 17, dP1 is the distance from the incident surface of the prism to the reflection surface of the prism on the first optical axis, and ODL2 is half of the outer diameter of the lens (or the second lens) disposed closest to the object side in the second lens group. Conditional Expression 16 and Conditional Expression 17 are related to the distance and conditions between the prism and the first lens group and the second lens group for tilt drive of the prism, and when the conditional expression deviates from the range, it may be difficult to ensure a sufficient distance therebetween, or the volume of the optical system may increase, which may be disadvantageous in ensuring portability.

[0128] In conditional expression 18, dLG1 is the distance from the object side surface of the lens (or the first lens) disposed closest to the object side in the first lens group to the image side surface of the lens (or the first lens) disposed closest to the image side, and conditional expression 18 suggests an appropriate distance range between the first lens group and the prism in terms of ensuring the driving space of the prism and miniaturizing the camera module.

[0129] Conditional expression 19 is related to the shape condition of the first lens of the lens through which light is incident, that is, the first lens has an appropriate focal length, and when the conditional expression deviates from this range, the refractive power may be significantly reduced, so that the focal length becomes significantly long, or vice versa, which may increase the aberration burden on subsequent lenses.

[0130] In Conditional Expression 20, R3 is the radius of curvature of the object-side surface of the second lens, and is a shape condition that the second lens has appropriate dimensions (length and thickness) for the optical imaging system.

[0131] Conditional Expression 21 and Conditional Expression 22 respectively represent appropriate ranges regarding the distance between the prism and the second lens group, and Conditional Expression 22 represents an appropriate range regarding the size of the optical imaging system.

[0132] Hereinafter, an optical imaging system according to an exemplary embodiment of the present disclosure will be described with reference to the accompanying drawings.

[0133] First embodiment

[0134] Figure 1Ais a structural diagram of an optical imaging system according to a first embodiment of the present disclosure, and Figure 1B is a graph showing aberration characteristics of the optical imaging system according to the first embodiment of the present disclosure.

[0135] According to the first embodiment, the optical imaging system 100 may include a first lens 110, a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150 and a sixth lens 160 arranged in sequence from the object side to the image side, and may also include an infrared cutoff filter 170 and an image sensor 180 arranged on the image side of the sixth lens 160.

[0136] The first lens 110 may have a positive refractive power. The object side surface of the first lens 110 may have a convex shape in the paraxial region, and the image side surface of the first lens 110 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 110 may be formed of plastic. The first lens 110 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 110 may be aspherical.

[0137] The second lens 120 may have a positive refractive power. The object side surface and the image side surface of the second lens 120 may have a convex shape in the paraxial region. The second lens 120 may be formed of plastic. The second lens 120 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 120 may be aspherical.

[0138] The third lens 130 may have a negative refractive power. The object side surface and the image side surface of the third lens 130 may have a concave shape in the paraxial region. The third lens 130 may be formed of plastic. In detail, the third lens 130 may be formed of a plastic material having optical properties different from those of the second lens 120 (e.g., refractive index and Abbe number). The third lens 130 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 130 may be aspherical.

[0139] The fourth lens 140 may have a negative refractive power. The object side surface of the fourth lens 140 may have a convex shape in the paraxial region, and the image side surface of the fourth lens 140 may have a concave shape in the paraxial region. The fourth lens 140 may be formed of plastic. In detail, the fourth lens 140 may be formed of a plastic material having optical properties different from those of the third lens 130 (e.g., refractive index and Abbe number). The fourth lens 140 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 140 may be aspherical.

[0140] The fifth lens 150 may have positive refractive power. The object side surface and the image side surface of the fifth lens 150 may have a convex shape in the paraxial region. The fifth lens 150 may be formed of plastic. In detail, the fifth lens 150 may be formed of a plastic material having optical properties different from those of the fourth lens 140 (e.g., refractive index and Abbe number). The fifth lens 150 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 150 may be aspherical.

[0141] The sixth lens 160 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 160 may have a concave shape in the paraxial region. The sixth lens 160 may be formed of plastic. In detail, the sixth lens 160 may be formed of a plastic material having optical properties different from those of the fifth lens 150 (e.g., refractive index and Abbe number). The sixth lens 160 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 160 may be aspherical.

[0142] The prism P may be disposed between the first lens 110 and the second lens 120. The first lens 110 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 120 to the sixth lens 160 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0143] Table 1 shows optical parameters and physical parameters of the optical imaging system 100 according to the first embodiment of the present disclosure.

[0144] Table 1

[0145] surface Radius of curvature Thickness / distance Refractive Index Abbe number Half Aperture object infinity infinity 1 infinity 0.000 2 9.370 1.306 1.535 55.7 3.60 3 15.813 1.427 3.44 4 infinity 3.000 1.717 29.5 2.70 5 infinity 3.000 1.717 29.5 3.85 6 infinity 2.631 2.70 7 4.477 1.798 1.535 55.7 2.65 8 -19.553 0.279 2.50 9 -14.215 0.682 1.614 25.9 2.32 10 3.875 0.538 2.00 11 24.202 1.792 1.544 56.0 2.10 12 22.906 0.287 2.04 13 26.648 1.565 1.660 20.4 2.10 14 -6.815 0.131 2.10 15 -132.954 1.237 1.639 23.5 2.00 16 9.611 5.392 2.00 17 infinity 0.210 1.518 64.2 3.40 18 infinity 2.309 3.44 image infinity 4.10

[0146] Table 2 shows aspherical surface data of the optical imaging system 100 according to the first embodiment of the present disclosure.

[0147] Table 2

[0148]

[0149]

[0150] Second embodiment

[0151] Figure 2A is a structural diagram of an optical imaging system according to a second embodiment of the present disclosure, and Figure 2B is a graph showing aberration characteristics of the optical imaging system according to the second embodiment of the present disclosure.

[0152] According to the second embodiment, the optical imaging system 200 may include a first lens 210, a second lens 220, a third lens 230, a fourth lens 240, a fifth lens 250 and a sixth lens 260 arranged in sequence from the object side to the image side, and may also include an infrared cutoff filter 270 and an image sensor 280 arranged on the image side of the sixth lens 260.

[0153] The first lens 210 may have a positive refractive power. The object side surface of the first lens 210 may have a convex shape in the paraxial region, and the image side surface of the first lens 210 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 210 may be formed of plastic. The first lens 210 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 210 may be aspherical.

[0154] The second lens 220 may have a positive refractive power. The object side surface and the image side surface of the second lens 220 may have a convex shape in the paraxial region. The second lens 220 may be formed of plastic. The second lens 220 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 220 may be aspherical.

[0155] The third lens 230 may have a negative refractive power. The object side surface and the image side surface of the third lens 230 may have a concave shape in the paraxial region. The third lens 230 may be formed of plastic. In detail, the third lens 230 may be formed of a plastic material having optical properties different from those of the second lens 220 (e.g., refractive index and Abbe number). The third lens 230 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 230 may be aspherical.

[0156] The fourth lens 240 may have a negative refractive power. The object side surface of the fourth lens 240 may have a convex shape in the paraxial region, and the image side surface of the fourth lens 240 may have a concave shape in the paraxial region. The fourth lens 240 may be formed of plastic. In detail, the fourth lens 240 may be formed of a plastic material having optical properties different from those of the third lens 230 (e.g., refractive index and Abbe number). The fourth lens 240 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 240 may be aspherical.

[0157] The fifth lens 250 may have a positive refractive power. The object side surface and the image side surface of the fifth lens 250 may have a convex shape in the paraxial region. The fifth lens 250 may be formed of plastic. In detail, the fifth lens 250 may be formed of a plastic material having optical properties different from those of the fourth lens 240 (e.g., refractive index and Abbe number). The fifth lens 250 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 250 may be aspherical.

[0158] The sixth lens 260 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 260 may have a concave shape in the paraxial region. The sixth lens 260 may be formed of plastic. In detail, the sixth lens 260 may be formed of a plastic material having optical properties different from those of the fifth lens 250 (e.g., refractive index and Abbe number). The sixth lens 260 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 260 may be aspherical.

[0159] The prism P may be disposed between the first lens 210 and the second lens 220. The first lens 210 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 220 to the sixth lens 260 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0160] Table 3 shows optical parameters and physical parameters of the optical imaging system 200 according to the second embodiment of the present disclosure.

[0161] Table 3

[0162] surface Radius of curvature Thickness / distance Refractive Index Abbe number Half Aperture object infinity infinity 1 infinity 0.000 2 9.365 1.286 1.535 55.7 3.60 3 15.772 1.414 3.44 4 infinity 3.000 1.717 29.5 2.70 5 infinity 3.000 1.717 29.5 3.85 6 infinity 2.631 2.70 7 4.477 1.793 1.535 55.7 2.65 8 -18.402 0.280 2.50 9 -13.300 0.292 1.614 25.9 1.57 10 3.892 0.511 1.33 11 23.464 1.743 1.544 56.0 2.10 12 22.018 0.361 1.63 13 22.487 1.468 1.660 20.4 2.10 14 -6.776 0.146 2.10 15 -95.190 1.452 1.639 23.5 2.00 16 8.957 5.392 2.00 17 infinity 0.210 1.518 64.2 3.95 18 infinity 3.225 3.98 image infinity 4.91

[0163] Table 4 shows aspherical surface data of the optical imaging system 200 according to the second embodiment of the present disclosure.

[0164] Table 4

[0165]

[0166]

[0167] Third embodiment

[0168] Figure 3A is a structural diagram of an optical imaging system according to a third embodiment of the present disclosure, and Figure 3B is a graph showing aberration characteristics of the optical imaging system according to the third embodiment of the present disclosure.

[0169] According to the third embodiment, the optical imaging system 300 may include a first lens 310, a second lens 320, a third lens 330, a fourth lens 340, a fifth lens 350 and a sixth lens 360 arranged in sequence from the object side to the image side, and may also include an infrared cutoff filter 370 and an image sensor 380 arranged on the image side of the sixth lens 360.

[0170] The first lens 310 may have a positive refractive power. The object side surface of the first lens 310 may have a convex shape in the paraxial region, and the image side surface of the first lens 310 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 310 may be formed of plastic. The first lens 310 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 310 may be aspherical.

[0171] The second lens 320 may have a positive refractive power. The object side surface and the image side surface of the second lens 320 may have a convex shape in the paraxial region. The second lens 320 may be formed of plastic. The second lens 320 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 320 may be aspherical.

[0172] The third lens 330 may have a negative refractive power. The object side surface and the image side surface of the third lens 330 may have a concave shape in the paraxial region. The third lens 330 may be formed of plastic. In detail, the third lens 330 may be formed of a plastic material having optical properties different from those of the second lens 320 (e.g., refractive index and Abbe number). The third lens 330 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 330 may be aspherical.

[0173] The fourth lens 340 may have a negative refractive power. The object side surface of the fourth lens 340 may have a convex shape in the paraxial region, and the image side surface of the fourth lens 340 may have a concave shape in the paraxial region. The fourth lens 340 may be formed of plastic. In detail, the fourth lens 340 may be formed of a plastic material having optical properties different from those of the third lens 330 (e.g., refractive index and Abbe number). The fourth lens 340 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 340 may be aspherical.

[0174] The fifth lens 350 may have a positive refractive power. The object side surface and the image side surface of the fifth lens 350 may have a convex shape in the paraxial region. The fifth lens 350 may be formed of plastic. In detail, the fifth lens 350 may be formed of a plastic material having optical properties different from those of the fourth lens 340 (e.g., refractive index and Abbe number). The fifth lens 350 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 350 may be aspherical.

[0175] The sixth lens 360 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 360 may have a concave shape in the paraxial region. The sixth lens 360 may be formed of plastic. In detail, the sixth lens 360 may be formed of a plastic material having optical properties different from those of the fifth lens 350 (e.g., refractive index and Abbe number). The sixth lens 360 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 360 may be aspherical.

[0176] The prism P may be disposed between the first lens 310 and the second lens 320. The first lens 310 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 320 to the sixth lens 360 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0177] Table 5 shows optical parameters and physical parameters of the optical imaging system 300 according to the third embodiment of the present disclosure.

[0178] Table 5

[0179] surface Radius of curvature Thickness / distance Refractive Index Abbe number Half Aperture object infinity infinity 1 infinity 0.000 2 9.284 1.250 1.535 55.7 3.85 3 14.058 1.160 3.14 4 infinity 3.100 1.717 29.5 2.80 5 infinity 3.100 1.717 29.5 3.96 6 infinity 2.767 2.80 7 4.347 1.663 1.535 55.7 2.57 8 -9.646 0.224 2.43 9 -8.216 1.110 1.614 25.9 2.41 10 3.670 0.533 1.97 11 20.533 0.369 1.544 56.0 1.91 12 18.483 0.338 1.92 13 30.090 1.480 1.660 20.4 1.83 14 -4.249 0.360 1.83 15 -6.105 0.505 1.639 23.5 1.80 16 48.055 5.392 1.80 17 infinity 0.210 1.518 64.2 3.15 18 infinity 3.580 3.18 image infinity 4.10

[0180] Table 6 shows aspherical surface data of the optical imaging system 300 according to the third embodiment of the present disclosure.

[0181] Table 6

[0182]

[0183]

[0184] Fourth embodiment

[0185] Figure 4A is a structural diagram of an optical imaging system according to a fourth embodiment of the present disclosure, and Figure 4B is a graph showing aberration characteristics of the optical imaging system according to the fourth embodiment of the present disclosure.

[0186] According to the fourth embodiment, the optical imaging system 400 may include a first lens 410, a second lens 420, a third lens 430, a fourth lens 440, a fifth lens 450 and a sixth lens 460 arranged in sequence from the object side to the image side, and may also include an infrared cutoff filter 470 and an image sensor 480 arranged on the image side of the sixth lens 460.

[0187] The first lens 410 may have a positive refractive power. The object side surface of the first lens 410 may have a convex shape in the paraxial region, and the image side surface of the first lens 410 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 410 may be formed of plastic. The first lens 410 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 410 may be aspherical.

[0188] The second lens 420 may have a positive refractive power. The object side surface and the image side surface of the second lens 420 may have a convex shape in the paraxial region. The second lens 420 may be formed of plastic. The second lens 420 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 420 may be aspherical.

[0189] The third lens 430 may have a negative refractive power. The object side surface and the image side surface of the third lens 430 may have a concave shape in the paraxial region. The third lens 430 may be formed of plastic. In detail, the third lens 430 may be formed of a plastic material having optical properties different from those of the second lens 420 (e.g., refractive index and Abbe number). The third lens 430 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 430 may be aspherical.

[0190] The fourth lens 440 may have a positive refractive power. The object side surface and the image side surface of the fourth lens 440 may have a convex shape in the paraxial region. The fourth lens 440 may be formed of plastic. In detail, the fourth lens 440 may be formed of a plastic material having optical properties different from those of the third lens 430 (e.g., refractive index and Abbe number). The fourth lens 440 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 440 may be aspherical.

[0191] The fifth lens 450 may have a positive refractive power. The object side surface and the image side surface of the fifth lens 450 may have a convex shape in the paraxial region. The fifth lens 450 may be formed of plastic. In detail, the fifth lens 450 may be formed of a plastic material having optical properties different from those of the fourth lens 440 (e.g., refractive index and Abbe number). The fifth lens 450 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 450 may be aspherical.

[0192] The sixth lens 460 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 460 may have a concave shape in the paraxial region. The sixth lens 460 may be formed of plastic. In detail, the sixth lens 460 may be formed of a plastic material having optical properties different from those of the fifth lens 450 (e.g., refractive index and Abbe number). The sixth lens 460 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 460 may be aspherical.

[0193] The prism P may be disposed between the first lens 410 and the second lens 420. The first lens 410 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 420 to the sixth lens 460 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0194] Table 7 shows optical parameters and physical parameters of the optical imaging system 400 according to the fourth embodiment of the present disclosure.

[0195] Table 7

[0196] surface Radius of curvature Thickness / distance Refractive Index Abbe number Half Aperture object infinity infinity 1 infinity 0.000 2 9.224 1.200 1.535 55.7 3.78 3 11.440 1.000 3.57 4 infinity 3.200 1.717 29.5 2.90 5 infinity 3.200 1.717 29.5 4.10 6 infinity 3.100 2.90 7 5.418 2.411 1.535 55.7 3.08 8 -12.807 0.161 2.80 9 -26.687 2.126 1.614 25.9 2.66 10 3.855 0.719 1.96 11 16.536 1.538 1.544 56.0 2.13 12 -315.218 0.100 2.39 13 19.256 0.888 1.660 20.4 2.47 14 -6.150 0.580 2.48 15 -10.223 0.880 1.639 23.5 2.37 16 8.037 5.399 2.55 17 infinity 0.210 1.518 64.2 3.90 18 infinity 0.601 3.94 image infinity 4.10

[0197] Table 8 shows aspherical surface data of the optical imaging system 400 according to the fourth embodiment of the present disclosure.

[0198] Table 8

[0199] surface 2 3 7 8 9 10 K -4.70E+00 4.90E+00 0.00E+00 3.71E-02 3.69E+01 -8.15E-01 A 1.30E-03 3.63E-04 1.70E-04 2.25E-03 -2.45E-04 -1.50E-03 B -1.26E-05 -1.40E-05 -1.66E-08 -2.88E-04 -9.68E-07 4.71E-04 C 3.56E-06 5.97E-06 2.19E-07 2.64E-07 2.50E-06 2.84E-04 D -4.93E-07 -1.25E-06 -3.40E-07 1.14E-05 6.07E-07 -2.01E-04 E 4.14E-08 1.50E-07 0.00E+00 -4.03E-06 0.00E+00 8.99E-05 F -1.42E-09 -1.06E-08 0.00E+00 7.60E-07 0.00E+00 -2.37E-05 G -2.76E-11 4.28E-10 0.00E+00 -8.17E-08 0.00E+00 3.57E-06 H 3.53E-12 -9.29E-12 0.00E+00 4.77E-09 0.00E+00 -2.65E-07 J -7.46E-14 8.97E-14 0.00E+00 -1.18E-10 0.00E+00 6.19E-09 surface 11 12 13 14 15 16 K 3.37E+01 9.00E+01 -1.58E+00 -2.99E+00 0.00E+00 0.00E+00 A -1.15E-03 1.38E-03 3.45E-03 3.47E-03 -2.05E-03 -5.53E-03 B 1.85E-04 5.35E-05 1.89E-04 -2.59E-04 -5.15E-04 1.87E-04 C 5.43E-05 -3.23E-05 -3.31E-05 -3.21E-05 -3.58E-05 -7.51E-06 D -8.10E-06 -5.28E-06 -1.34E-05 9.90E-07 3.24E-06 7.89E-07 E 8.04E-08 0.00E+00 2.59E-06 -7.89E-07 1.25E-07 0.00E+00 F 0.00E+00 0.00E+00 -1.88E-07 2.77E-07 0.00E+00 0.00E+00 G 0.00E+00 0.00E+00 6.77E-09 -2.80E-08 0.00E+00 0.00E+00 H 0.00E+00 0.00E+00 -1.21E-10 1.16E-09 0.00E+00 0.00E+00 J 0.00E+00 0.00E+00 8.48E-13 -1.73E-11 0.00E+00 0.00E+00

[0200] Fifth embodiment

[0201] Figure 5A is a structural diagram of an optical imaging system according to a fifth embodiment of the present disclosure, and Figure 5B is a graph showing aberration characteristics of an optical imaging system according to a fifth embodiment of the present disclosure.

[0202] According to the fifth embodiment, the optical imaging system 500 may include a first lens 510, a second lens 520, a third lens 530, a fourth lens 540, a fifth lens 550 and a sixth lens 560 arranged in sequence from the object side to the image side, and may also include an infrared cutoff filter 570 and an image sensor 580 arranged on the image side of the sixth lens 560.

[0203] The first lens 510 may have a positive refractive power. The object side surface of the first lens 510 may have a convex shape in the paraxial region, and the image side surface of the first lens 510 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 510 may be formed of plastic. The first lens 510 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 510 may be aspherical.

[0204] The second lens 520 may have a positive refractive power. The object side surface and the image side surface of the second lens 520 may have a convex shape in the paraxial region. The second lens 520 may be formed of plastic. The second lens 520 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 520 may be aspherical.

[0205] The third lens 530 may have a negative refractive power. The object side surface and the image side surface of the third lens 530 may have a concave shape in the paraxial region. The third lens 530 may be formed of plastic. In detail, the third lens 530 may be formed of a plastic material having optical properties different from those of the second lens 520 (e.g., refractive index and Abbe number). The third lens 530 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 530 may be aspherical.

[0206] The fourth lens 540 may have a positive refractive power. The object side surface of the fourth lens 540 may have a convex shape in the paraxial region, and the image side surface of the fourth lens 540 may have a concave shape in the paraxial region. The fourth lens 540 may be formed of plastic. In detail, the fourth lens 540 may be formed of a plastic material having optical properties different from those of the third lens 530 (e.g., refractive index and Abbe number). The fourth lens 540 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 540 may be aspherical.

[0207] The fifth lens 550 may have a positive refractive power. The object side surface and the image side surface of the fifth lens 550 may have a convex shape in the paraxial region. The fifth lens 550 may be formed of plastic. In detail, the fifth lens 550 may be formed of a plastic material having optical properties different from those of the fourth lens 540 (e.g., refractive index and Abbe number). The fifth lens 550 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 550 may be aspherical.

[0208] The sixth lens 560 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 560 may have a concave shape in the paraxial region. The sixth lens 560 may be formed of plastic. In detail, the sixth lens 560 may be formed of a plastic material having optical properties different from those of the fifth lens 550 (e.g., refractive index and Abbe number). The sixth lens 560 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 560 may be aspherical.

[0209] The prism P may be disposed between the first lens 510 and the second lens 520. The first lens 510 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 520 to the sixth lens 560 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0210] Table 9 shows optical parameters and physical parameters of the optical imaging system 500 according to the fifth embodiment of the present disclosure.

[0211] Table 9

[0212] surface Radius of curvature Thickness / distance Refractive Index Abbe number Half Aperture object infinity infinity 1 infinity 0.000 2 9.249 1.100 1.535 55.7 3.60 3 11.503 0.900 3.42 4 infinity 3.200 1.717 29.5 2.90 5 infinity 3.200 1.717 29.5 4.10 6 infinity 3.000 2.90 7 5.411 2.399 1.535 55.7 3.08 8 -13.110 0.139 2.77 9 -28.256 2.025 1.614 25.9 2.64 10 3.853 0.810 1.97 11 16.978 0.959 1.544 56.0 2.15 12 22.784 0.159 2.29 13 17.358 1.001 1.660 20.4 2.37 14 -6.444 0.473 2.39 15 -15.854 0.505 1.639 23.5 2.31 16 8.414 5.399 2.55 17 infinity 0.110 1.518 64.2 3.45 18 infinity 3.147 3.46 image infinity 4.10

[0213] Table 10 shows aspherical surface data of the optical imaging system 500 according to the fifth embodiment of the present disclosure.

[0214] Table 10

[0215] surface 2 3 7 8 9 10 K -4.60E+00 5.01E+00 0.00E+00 3.71E-02 3.61E+01 -7.97E-01 A 1.30E-03 3.67E-04 1.59E-04 2.37E-03 -2.36E-04 -1.58E-03 B -2.26E-05 -3.60E-05 -1.52E-05 -3.30E-04 -3.28E-07 7.04E-04 C 6.73E-06 1.44E-05 4.98E-08 2.09E-05 2.64E-06 -2.56E-05 D -8.72E-07 -3.04E-06 -3.72E-07 2.54E-06 6.32E-07 5.99E-05 E 5.08E-08 3.84E-07 0.00E+00 -1.62E-06 0.00E+00 -4.60E-05 F 1.38E-09 -2.99E-08 0.00E+00 3.53E-07 0.00E+00 1.98E-05 G -3.59E-10 1.40E-09 0.00E+00 -4.01E-08 0.00E+00 -4.73E-06 H 1.86E-11 -3.62E-11 0.00E+00 2.42E-09 0.00E+00 5.97E-07 J -3.28E-13 4.05E-13 0.00E+00 -6.20E-11 0.00E+00 -3.13E-08 surface 11 12 13 14 15 16 K 3.22E+01 7.23E+00 -8.47E-01 -2.93E+00 0.00E+00 0.00E+00 A -1.24E-03 1.47E-03 3.05E-03 3.43E-03 -2.01E-03 -5.72E-03 B 1.78E-04 6.27E-05 3.50E-04 -1.83E-04 -4.95E-04 1.70E-04 C 5.35E-05 -3.15E-05 -5.93E-05 -4.76E-05 -3.47E-05 -5.43E-06 D -7.94E-06 -5.45E-06 -1.19E-05 1.38E-06 3.39E-06 1.48E-06 E 2.60E-07 0.00E+00 2.66E-06 -8.17E-07 2.00E-07 0.00E+00 F 0.00E+00 0.00E+00 -2.02E-07 3.04E-07 0.00E+00 0.00E+00 G 0.00E+00 0.00E+00 7.56E-09 -3.14E-08 0.00E+00 0.00E+00 H 0.00E+00 0.00E+00 -1.40E-10 1.32E-09 0.00E+00 0.00E+00 J 0.00E+00 0.00E+00 1.02E-12 -1.99E-11 0.00E+00 0.00E+00

[0216] Sixth Embodiment

[0217] Fig. 6A is a structural diagram of an optical imaging system according to a sixth embodiment of the present disclosure, and Figure 6B is a graph showing aberration characteristics of the optical imaging system according to the sixth embodiment of the present disclosure.

[0218] According to the sixth embodiment, the optical imaging system 600 includes a first lens 610, a second lens 620, a third lens 630, a fourth lens 640, a fifth lens 650 and a sixth lens 660 arranged in sequence from the object side to the image side, and may also include an infrared cutoff filter 670 and an image sensor 680 arranged on the image side of the sixth lens 660.

[0219] The first lens 610 may have a positive refractive power. The object side surface of the first lens 610 may have a convex shape in the paraxial region, and the image side surface of the first lens 610 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 610 may be formed of plastic. The first lens 610 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 610 may be aspherical.

[0220] The second lens 620 may have a positive refractive power. The object side surface and the image side surface of the second lens 620 may have a convex shape in the paraxial region. The second lens 620 may be formed of plastic. The second lens 620 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 620 may be aspherical.

[0221] The third lens 630 may have a negative refractive power. The object side surface and the image side surface of the third lens 630 may have a concave shape in the paraxial region. The third lens 630 may be formed of plastic. In detail, the third lens 630 may be formed of a plastic material having optical properties different from those of the second lens 620 (e.g., refractive index and Abbe number). The third lens 630 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 630 may be aspherical.

[0222] The fourth lens 640 may have a positive refractive power. The object side surface of the fourth lens 640 may have a convex shape in the paraxial region, and the image side surface of the fourth lens 640 may have a concave shape in the paraxial region. The fourth lens 640 may be formed of plastic. In detail, the fourth lens 640 may be formed of a plastic material having optical properties different from those of the third lens 630 (e.g., refractive index and Abbe number). The fourth lens 640 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 640 may be aspherical.

[0223] The fifth lens 650 may have a positive refractive power. The object side surface and the image side surface of the fifth lens 650 may have a convex shape in the paraxial region. The fifth lens 650 may be formed of plastic. In detail, the fifth lens 650 may be formed of a plastic material having optical properties different from those of the fourth lens 640 (e.g., refractive index and Abbe number). The fifth lens 650 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 650 may be aspherical.

[0224] The sixth lens 660 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 660 may have a concave shape in the paraxial region. The sixth lens 660 may be formed of plastic. In detail, the sixth lens 660 may be formed of a plastic material having optical properties different from those of the fifth lens 650 (e.g., refractive index and Abbe number). The sixth lens 660 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 660 may be aspherical.

[0225] The prism P may be disposed between the first lens 610 and the second lens 620. The first lens 610 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 620 to the sixth lens 660 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0226] Table 11 shows optical parameters and physical parameters of the optical imaging system 600 according to the sixth embodiment of the present disclosure.

[0227] Table 11

[0228]

[0229]

[0230] Table 12 shows aspherical surface data of the optical imaging system 600 according to the sixth embodiment of the present disclosure.

[0231] Table 12

[0232] surface 2 3 7 8 9 10 K -4.63E+00 4.96E+00 0.00E+00 3.71E-02 3.70E+01 -8.06E-01 A 1.27E-03 3.02E-04 1.39E-04 2.46E-03 -2.45E-04 -1.66E-03 B -1.57E-05 -1.37E-05 -1.61E-05 -3.61E-04 -1.06E-06 7.15E-04 C 4.49E-06 4.57E-06 8.49E-08 2.91E-05 2.54E-06 1.17E-05 D -5.16E-07 -5.51E-07 -3.67E-07 -6.90E-07 6.17E-07 2.53E-05 E 3.00E-08 1.71E-08 0.00E+00 -6.29E-07 0.00E+00 -2.83E-05 F 2.43E-10 2.50E-09 0.00E+00 1.74E-07 0.00E+00 1.41E-05 G -1.31E-10 -2.65E-10 0.00E+00 -2.20E-08 0.00E+00 -3.63E-06 H 6.87E-12 9.33E-12 0.00E+00 1.48E-09 0.00E+00 4.81E-07 J -1.23E-13 -1.09E-13 0.00E+00 -4.28E-11 0.00E+00 -2.61E-08 surface 11 12 13 14 15 16 K 3.27E+01 5.66E+00 -3.91E-01 -2.90E+00 0.00E+00 0.00E+00 A -1.21E-03 1.43E-03 2.74E-03 3.29E-03 -1.97E-03 -5.72E-03 B 1.82E-04 5.78E-05 4.08E-04 -1.83E-04 -4.99E-04 1.85E-04 C 5.43E-05 -3.22E-05 -5.30E-05 -3.82E-05 -3.52E-05 -4.35E-06 D -7.85E-06 -5.50E-06 -1.43E-05 -9.92E-07 3.43E-06 1.73E-06 E 2.39E-07 0.00E+00 2.92E-06 -4.36E-07 2.02E-07 0.00E+00 F 0.00E+00 0.00E+00 -2.16E-07 2.61E-07 0.00E+00 0.00E+00 G 0.00E+00 0.00E+00 7.99E-09 -2.84E-08 0.00E+00 0.00E+00 H 0.00E+00 0.00E+00 -1.47E-10 1.20E-09 0.00E+00 0.00E+00 J 0.00E+00 0.00E+00 1.07E-12 -1.82E-11 0.00E+00 0.00E+00

[0233] Seventh embodiment

[0234] Fig. 7A is a structural diagram of an optical imaging system according to a seventh embodiment of the present disclosure, and Figure 7B is a graph showing aberration characteristics of an optical imaging system according to a seventh embodiment of the present disclosure.

[0235] According to the seventh embodiment, the optical imaging system 700 may include a first lens 710, a second lens 720, a third lens 730, a fourth lens 740, a fifth lens 750 and a sixth lens 760 arranged in sequence from the object side to the image side, and may also include an infrared cutoff filter 770 and an image sensor 780 arranged on the image side of the sixth lens 760.

[0236] The first lens 710 may have a positive refractive power. The object side surface of the first lens 710 may have a convex shape in the paraxial region, and the image side surface of the first lens 710 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 710 may be formed of plastic. The first lens 710 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 710 may be aspherical.

[0237] The second lens 720 may have a positive refractive power. The object side surface and the image side surface of the second lens 720 may have a convex shape in the paraxial region. The second lens 720 may be formed of plastic. The second lens 720 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 720 may be aspherical.

[0238] The third lens 730 may have a negative refractive power. The object side surface and the image side surface of the third lens 730 may have a concave shape in the paraxial region. The third lens 730 may be formed of plastic. In detail, the third lens 730 may be formed of a plastic material having optical properties different from those of the second lens 720 (e.g., refractive index and Abbe number). The third lens 730 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 730 may be aspherical.

[0239] The fourth lens 740 may have a positive refractive power. The object side surface of the fourth lens 740 may have a convex shape in the paraxial region, and the image side surface of the fourth lens 740 may have a concave shape in the paraxial region. The fourth lens 740 may be formed of plastic. In detail, the fourth lens 740 may be formed of a plastic material having optical properties different from those of the third lens 730 (e.g., refractive index and Abbe number). The fourth lens 740 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 740 may be aspherical.

[0240] The fifth lens 750 may have a positive refractive power. The object side surface and the image side surface of the fifth lens 750 may have a convex shape in the paraxial region. The fifth lens 750 may be formed of plastic. In detail, the fifth lens 750 may be formed of a plastic material having optical properties different from those of the fourth lens 740 (e.g., refractive index and Abbe number). The fifth lens 750 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 750 may be aspherical.

[0241] The sixth lens 760 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 760 may have a concave shape in the paraxial region. The sixth lens 760 may be formed of plastic. In detail, the sixth lens 760 may be formed of a plastic material having optical properties different from those of the fifth lens 750 (e.g., refractive index and Abbe number). The sixth lens 760 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 760 may be aspherical.

[0242] The prism P may be disposed between the first lens 710 and the second lens 720. The first lens 710 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 720 to the sixth lens 760 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0243] Table 13 shows optical parameters and physical parameters of the optical imaging system 700 according to the seventh embodiment of the present disclosure.

[0244] Table 13

[0245]

[0246]

[0247] Table 14 shows aspherical surface data of the optical imaging system 700 according to the seventh embodiment of the present disclosure.

[0248] Table 14

[0249] surface 2 3 7 8 9 10 K -4.68E+00 4.94E+00 0.00E+00 3.71E-02 3.63E+01 -8.05E-01 A 1.31E-03 3.78E-04 1.58E-04 2.32E-03 -2.36E-04 -1.39E-03 B -1.85E-05 -1.87E-05 -1.44E-05 -3.15E-04 5.43E-08 6.59E-04 C 5.89E-06 7.72E-06 2.88E-07 8.17E-06 2.56E-06 -4.56E-05 D -1.00E-06 -1.60E-06 -3.51E-07 7.63E-06 6.03E-07 1.04E-04 E 1.08E-07 1.91E-07 0.00E+00 -2.60E-06 0.00E+00 -7.78E-05 F -6.77E-09 -1.35E-08 0.00E+00 4.43E-07 0.00E+00 3.20E-05 G 2.24E-10 5.52E-10 0.00E+00 -4.22E-08 0.00E+00 -7.22E-06 H -2.75E-12 -1.19E-11 0.00E+00 2.16E-09 0.00E+00 8.63E-07 J -1.21E-14 1.12E-13 0.00E+00 -4.71E-11 0.00E+00 -4.25E-08 surface 11 12 13 14 15 16 K 3.28E+01 2.61E+00 -7.45E-01 -2.91E+00 0.00E+00 0.00E+00 A -1.20E-03 1.43E-03 3.00E-03 3.32E-03 -1.99E-03 -5.72E-03 B 1.79E-04 6.45E-05 2.91E-04 -2.27E-04 -5.09E-04 1.82E-04 C 5.39E-05 -3.10E-05 -3.49E-05 -2.65E-05 -3.66E-05 -6.12E-06 D -7.97E-06 -5.31E-06 -1.52E-05 -2.78E-06 3.10E-06 1.21E-06 E 1.77E-07 0.00E+00 2.86E-06 -9.79E-08 1.57E-07 0.00E+00 F 0.00E+00 0.00E+00 -2.06E-07 2.10E-07 0.00E+00 0.00E+00 G 0.00E+00 0.00E+00 7.48E-09 -2.43E-08 0.00E+00 0.00E+00 H 0.00E+00 0.00E+00 -1.35E-10 1.05E-09 0.00E+00 0.00E+00 J 0.00E+00 0.00E+00 9.69E-13 -1.59E-11 0.00E+00 0.00E+00

[0250] Eighth Embodiment

[0251] Fig. 8A is a structural diagram of an optical imaging system according to an eighth embodiment of the present disclosure, and Figure 8B is a graph showing aberration characteristics of the optical imaging system according to the eighth embodiment of the present disclosure.

[0252] According to the eighth embodiment, the optical imaging system 800 may include a first lens 810, a second lens 820, a third lens 830, a fourth lens 840, a fifth lens 850 and a sixth lens 860 arranged in sequence from the object side to the image side, and may also include an infrared cutoff filter 870 and an image sensor 880 arranged on the image side of the sixth lens 860.

[0253] The first lens 810 may have a positive refractive power. The object side surface of the first lens 810 may have a convex shape in the paraxial region, and the image side surface of the first lens 810 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 810 may be formed of plastic. The first lens 810 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 810 may be aspherical.

[0254] The second lens 820 may have a positive refractive power. The object side surface and the image side surface of the second lens 820 may have a convex shape in the paraxial region. The second lens 820 may be formed of plastic. The second lens 820 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 820 may be aspherical.

[0255] The third lens 830 may have a negative refractive power. The object side surface and the image side surface of the third lens 830 may have a concave shape in the paraxial region. The third lens 830 may be formed of plastic. In detail, the third lens 830 may be formed of a plastic material having optical properties different from those of the second lens 820 (e.g., refractive index and Abbe number). The third lens 830 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 830 may be aspherical.

[0256] The fourth lens 840 may have a positive refractive power. The object side surface of the fourth lens 840 may have a convex shape in the paraxial region, and the image side surface of the fourth lens 840 may have a concave shape in the paraxial region. The fourth lens 840 may be formed of plastic. In detail, the fourth lens 840 may be formed of a plastic material having optical properties different from those of the third lens 830 (e.g., refractive index and Abbe number). The fourth lens 840 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 840 may be aspherical.

[0257] The fifth lens 850 may have a positive refractive power. The object side surface and the image side surface of the fifth lens 850 may have a convex shape in the paraxial region. The fifth lens 850 may be formed of plastic. In detail, the fifth lens 850 may be formed of a plastic material having optical properties different from those of the fourth lens 840 (e.g., refractive index and Abbe number). The fifth lens 850 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 850 may be aspherical.

[0258] The sixth lens 860 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 860 may have a concave shape in the paraxial region. The sixth lens 860 may be formed of plastic. In detail, the sixth lens 860 may be formed of a plastic material having optical properties different from those of the fifth lens 850 (e.g., refractive index and Abbe number). The sixth lens 860 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 860 may be aspherical.

[0259] The prism P may be disposed between the first lens 810 and the second lens 820. The first lens 810 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 820 to the sixth lens 860 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0260] Table 15 shows optical parameters and physical parameters of the optical imaging system 800 according to the eighth embodiment of the present disclosure.

[0261] Table 15

[0262]

[0263]

[0264] Table 16 shows aspherical surface data of the optical imaging system 800 according to the eighth embodiment of the present disclosure.

[0265] Table 16

[0266] surface 2 3 7 8 9 10 K -4.71E+00 4.81E+00 0.00E+00 3.71E-02 3.74E+01 -8.27E-01 A 1.30E-03 3.64E-04 1.52E-04 2.44E-03 -2.55E-04 -1.56E-03 B -1.17E-05 -4.42E-06 -1.64E-05 -3.83E-04 -6.96E-07 8.19E-04 C 3.84E-06 2.26E-06 5.14E-07 4.59E-05 2.48E-06 -1.63E-04 D -7.22E-07 -4.81E-07 -3.09E-07 -7.41E-06 5.90E-07 1.72E-04 E 9.28E-08 5.17E-08 0.00E+00 1.30E-06 0.00E+00 -1.04E-04 F -7.38E-09 -3.09E-09 0.00E+00 -1.96E-07 0.00E+00 3.78E-05 G 3.52E-10 9.07E-11 0.00E+00 2.14E-08 0.00E+00 -8.00E-06 H -9.12E-12 -8.67E-13 0.00E+00 -1.34E-09 0.00E+00 9.15E-07 J 9.83E-14 -8.38E-16 0.00E+00 3.48E-11 0.00E+00 -4.35E-08 surface 11 12 13 14 15 16 K 3.43E+01 -9.00E+01 -8.87E-01 -2.95E+00 0.00E+00 0.00E+00 A -1.07E-03 1.32E-03 3.08E-03 3.14E-03 -1.97E-03 -5.52E-03 B 1.88E-04 4.96E-05 3.16E-04 -1.92E-04 -5.15E-04 2.15E-04 C 5.51E-05 -3.31E-05 -7.33E-05 -5.68E-05 -3.41E-05 -7.11E-06 D -8.37E-06 -5.22E-06 -3.72E-06 7.10E-06 3.42E-06 6.62E-07 E -2.04E-07 0.00E+00 1.33E-06 -1.43E-06 1.00E-07 0.00E+00 F 0.00E+00 0.00E+00 -9.92E-08 3.00E-07 0.00E+00 0.00E+00 G 0.00E+00 0.00E+00 3.34E-09 -2.75E-08 0.00E+00 0.00E+00 H 0.00E+00 0.00E+00 -5.19E-11 1.10E-09 0.00E+00 0.00E+00 J 0.00E+00 0.00E+00 2.84E-13 -1.62E-11 0.00E+00 0.00E+00

[0267] Ninth embodiment

[0268] Fig. 9A is a structural diagram of an optical imaging system according to a ninth embodiment of the present disclosure, and Fig. 9B is a graph showing aberration characteristics of an optical imaging system according to a ninth embodiment of the present disclosure.

[0269] According to the ninth embodiment, the optical imaging system 900 may include a first lens 910, a second lens 920, a third lens 930, a fourth lens 940, a fifth lens 950 and a sixth lens 960 arranged in sequence from the object side toward the image side, and may also include an infrared cutoff filter 970 and an image sensor 980 arranged on the image side of the sixth lens 960.

[0270] The first lens 910 may have a positive refractive power. The object side surface of the first lens 910 may have a convex shape in the paraxial region, and the image side surface of the first lens 910 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 910 may be formed of plastic. The first lens 910 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 910 may be aspherical.

[0271] The second lens 920 may have a positive refractive power. The object side surface and the image side surface of the second lens 920 may have a convex shape in the paraxial region. The second lens 920 may be formed of plastic. The second lens 920 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 920 may be aspherical.

[0272] The third lens 930 may have a negative refractive power. The object side surface and the image side surface of the third lens 930 may have a concave shape in the paraxial region. The third lens 930 may be formed of plastic. In detail, the third lens 930 may be formed of a plastic material having optical properties different from those of the second lens 920 (e.g., refractive index and Abbe number). The third lens 930 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 930 may be aspherical.

[0273] The fourth lens 940 may have a positive refractive power. The object side surface of the fourth lens 940 may have a convex shape in the paraxial region, and the image side surface of the fourth lens 940 may have a concave shape in the paraxial region. The fourth lens 940 may be formed of plastic. In detail, the fourth lens 940 may be formed of a plastic material having optical properties different from those of the third lens 930 (e.g., refractive index and Abbe number). The fourth lens 940 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 940 may be aspherical.

[0274] The fifth lens 950 may have a positive refractive power. The object side surface and the image side surface of the fifth lens 950 may have a convex shape in the paraxial region. The fifth lens 950 may be formed of plastic. In detail, the fifth lens 950 may be formed of a plastic material having optical properties different from those of the fourth lens 940 (e.g., refractive index and Abbe number). The fifth lens 950 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 950 may be aspherical.

[0275] The sixth lens 960 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 960 may have a concave shape in the paraxial region. The sixth lens 960 may be formed of plastic. In detail, the sixth lens 960 may be formed of a plastic material having optical properties different from those of the fifth lens 950 (e.g., refractive index and Abbe number). The sixth lens 960 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 960 may be aspherical.

[0276] The prism P may be disposed between the first lens 910 and the second lens 920. The first lens 910 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 920 to the sixth lens 960 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0277] Table 17 shows optical parameters and physical parameters of the optical imaging system 900 according to the ninth embodiment of the present disclosure.

[0278] Table 17

[0279]

[0280]

[0281] Table 18 shows aspherical surface data of the optical imaging system 900 according to the ninth embodiment of the present disclosure.

[0282] Table 18

[0283]

[0284]

[0285] Tenth embodiment

[0286] Fig. 10A is a structural diagram of an optical imaging system according to a tenth embodiment of the present disclosure, and Fig. 10B is a graph showing aberration characteristics of the optical imaging system according to the tenth embodiment of the present disclosure.

[0287] According to the tenth embodiment, the optical imaging system 1000 may include a first lens 1010, a second lens 1020, a third lens 1030, a fourth lens 1040, a fifth lens 1050 and a sixth lens 1060 arranged in sequence from the object side to the image side, and may also include an infrared cutoff filter 1070 and an image sensor 1080 arranged on the image side of the sixth lens 1060.

[0288] The first lens 1010 may have a positive refractive power. The object side surface of the first lens 1010 may have a convex shape in the paraxial region, and the image side surface of the first lens 1010 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 1010 may be formed of plastic. The first lens 1010 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 1010 may be aspherical.

[0289] The second lens 1020 may have a positive refractive power. The object side surface and the image side surface of the second lens 1020 may have a convex shape in the paraxial region. The second lens 1020 may be formed of plastic. The second lens 1020 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 1020 may be aspherical.

[0290] The third lens 1030 may have a negative refractive power. The object side surface and the image side surface of the third lens 1030 may have a concave shape in the paraxial region. The third lens 1030 may be formed of plastic. In detail, the third lens 1030 may be formed of a plastic material having optical properties different from those of the second lens 1020 (e.g., refractive index and Abbe number). The third lens 1030 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 1030 may be aspherical.

[0291] The fourth lens 1040 may have a positive refractive power. The object side surface of the fourth lens 1040 may have a concave shape in the paraxial region, and the image side surface of the fourth lens 1040 may have a convex shape in the paraxial region. The fourth lens 1040 may be formed of plastic. In detail, the fourth lens 1040 may be formed of a plastic material having optical properties different from those of the third lens 1030 (e.g., refractive index and Abbe number). The fourth lens 1040 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 1040 may be aspherical.

[0292] The fifth lens 1050 may have a positive refractive power. The object side surface of the fifth lens 1050 may have a concave shape in the paraxial region, and the image side surface of the fifth lens 1050 may have a convex shape in the paraxial region. The fifth lens 1050 may be formed of plastic. In detail, the fifth lens 1050 may be formed of a plastic material having optical properties different from those of the fourth lens 1040 (e.g., refractive index and Abbe number). The fifth lens 1050 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 1050 may be aspherical.

[0293] The sixth lens 1060 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 1060 may have a concave shape in the paraxial region. The sixth lens 1060 may be formed of plastic. In detail, the sixth lens 1060 may be formed of a plastic material having optical properties different from those of the fifth lens 1050 (e.g., refractive index and Abbe number). The sixth lens 1060 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 1060 may be aspherical.

[0294] The prism P may be disposed between the first lens 1010 and the second lens 1020. The first lens 1010 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 1020 to the sixth lens 1060 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0295] Table 19 shows optical parameters and physical parameters of the optical imaging system 1000 according to the tenth embodiment of the present disclosure.

[0296] Table 19

[0297]

[0298]

[0299] Table 20 shows aspherical surface data of the optical imaging system 1000 according to the tenth embodiment of the present disclosure.

[0300] Table 20

[0301]

[0302]

[0303] Eleventh Embodiment

[0304] Fig.11A is a structural diagram of an optical imaging system according to an eleventh embodiment of the present disclosure, and Fig. 11B is a graph showing aberration characteristics of the optical imaging system according to the eleventh embodiment of the present disclosure.

[0305] According to the eleventh embodiment, the optical imaging system 1100 may include a first lens 1110, a second lens 1120, a third lens 1130, a fourth lens 1140, a fifth lens 1150 and a sixth lens 1160 arranged in sequence from the object side toward the image side, and may also include an infrared cutoff filter 1170 and an image sensor 1180 arranged on the image side of the sixth lens 1160.

[0306] The first lens 1110 may have a positive refractive power. The object side surface of the first lens 1110 may have a convex shape in the paraxial region, and the image side surface of the first lens 1110 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 1110 may be formed of plastic. The first lens 1110 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 1110 may be aspherical.

[0307] The second lens 1120 may have a positive refractive power. The object side surface and the image side surface of the second lens 1120 may have a convex shape in the paraxial region. The second lens 1120 may be formed of plastic. The second lens 1120 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 1120 may be aspherical.

[0308] The third lens 1130 may have a negative refractive power. The object side surface and the image side surface of the third lens 1130 may have a concave shape in the paraxial region. The third lens 1130 may be formed of plastic. In detail, the third lens 1130 may be formed of a plastic material having optical properties different from those of the second lens 1120 (e.g., refractive index and Abbe number). The third lens 1130 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 1130 may be aspherical.

[0309] The fourth lens 1140 may have a positive refractive power. The object side surface of the fourth lens 1140 may have a concave shape in the paraxial region, and the image side surface of the fourth lens 1140 may have a convex shape in the paraxial region. The fourth lens 1140 may be formed of plastic. In detail, the fourth lens 1140 may be formed of a plastic material having optical properties different from those of the third lens 1130 (e.g., refractive index and Abbe number). The fourth lens 1140 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 1140 may be aspherical.

[0310] The fifth lens 1150 may have a positive refractive power. The object side surface of the fifth lens 1150 may have a concave shape in the paraxial region, and the image side surface of the fifth lens 1150 may have a convex shape in the paraxial region. The fifth lens 1150 may be formed of plastic. In detail, the fifth lens 1150 may be formed of a plastic material having optical properties different from those of the fourth lens 1140 (e.g., refractive index and Abbe number). The fifth lens 1150 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 1150 may be aspherical.

[0311] The sixth lens 1160 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 1160 may have a concave shape in the paraxial region. The sixth lens 1160 may be formed of plastic. In detail, the sixth lens 1160 may be formed of a plastic material having optical properties different from those of the fifth lens 1150 (e.g., refractive index and Abbe number). The sixth lens 1160 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 1160 may be aspherical.

[0312] The prism P may be disposed between the first lens 1110 and the second lens 1120. The first lens 1110 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 1120 to the sixth lens 1160 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0313] Table 21 shows optical parameters and physical parameters of the optical imaging system 1100 according to the eleventh embodiment of the present disclosure.

[0314] Table 21

[0315]

[0316]

[0317] Table 22 shows aspherical surface data of the optical imaging system 1100 according to the eleventh embodiment of the present disclosure.

[0318] Table 22

[0319]

[0320]

[0321] Twelfth Embodiment

[0322] Fig. 12A is a structural diagram of an optical imaging system according to a twelfth embodiment of the present disclosure, and Fig. 12B is a graph showing aberration characteristics of the optical imaging system according to the twelfth embodiment of the present disclosure.

[0323] According to the twelfth embodiment, the optical imaging system 1200 may include a first lens 1210, a second lens 1220, a third lens 1230, a fourth lens 1240, a fifth lens 1250 and a sixth lens 1260 arranged in sequence from the object side toward the image side, and may also include an infrared cutoff filter 1270 and an image sensor 1280 arranged on the image side of the sixth lens 1260.

[0324] The first lens 1210 may have a positive refractive power. The object side surface of the first lens 1210 may have a convex shape in the paraxial region, and the image side surface of the first lens 1210 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 1210 may be formed of plastic. The first lens 1210 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 1210 may be aspherical.

[0325] The second lens 1220 may have a positive refractive power. The object side surface and the image side surface of the second lens 1220 may have a convex shape in the paraxial region. The second lens 1220 may be formed of plastic. The second lens 1220 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 1220 may be aspherical.

[0326] The third lens 1230 may have a negative refractive power. The object side surface and the image side surface of the third lens 1230 may have a concave shape in the paraxial region. The third lens 1230 may be formed of plastic. In detail, the third lens 1230 may be formed of a plastic material having optical properties different from those of the second lens 1220 (e.g., refractive index and Abbe number). The third lens 1230 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 1230 may be aspherical.

[0327] The fourth lens 1240 may have a positive refractive power. The object side surface of the fourth lens 1240 may have a concave shape in the paraxial region, and the image side surface of the fourth lens 1240 may have a convex shape in the paraxial region. The fourth lens 1240 may be formed of plastic. In detail, the fourth lens 1240 may be formed of a plastic material having optical properties different from those of the third lens 1230 (e.g., refractive index and Abbe number). The fourth lens 1240 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 1240 may be aspherical.

[0328] The fifth lens 1250 may have a positive refractive power. The object side surface of the fifth lens 1250 may have a concave shape in the paraxial region, and the image side surface of the fifth lens 1250 may have a convex shape in the paraxial region. The fifth lens 1250 may be formed of plastic. In detail, the fifth lens 1250 may be formed of a plastic material having optical properties different from those of the fourth lens 1240 (e.g., refractive index and Abbe number). The fifth lens 1250 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 1250 may be aspherical.

[0329] The sixth lens 1260 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 1260 may have a concave shape in the paraxial region. The sixth lens 1260 may be formed of plastic. In detail, the sixth lens 1260 may be formed of a plastic material having optical properties different from those of the fifth lens 1250 (e.g., refractive index and Abbe number). The sixth lens 1260 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 1260 may be aspherical.

[0330] The prism P may be disposed between the first lens 1210 and the second lens 1220. The first lens 1210 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 1220 to the sixth lens 1260 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0331] Table 23 shows optical parameters and physical parameters of the optical imaging system 1200 according to the twelfth embodiment of the present disclosure.

[0332] Table 23

[0333]

[0334]

[0335] Table 24 shows aspherical surface data of the optical imaging system 1200 according to the twelfth embodiment of the present disclosure.

[0336] Table 24

[0337]

[0338]

[0339] Thirteenth Embodiment

[0340] Fig.13A is a structural diagram of an optical imaging system according to a thirteenth embodiment of the present disclosure, and Fig. 13B is a graph showing aberration characteristics of the optical imaging system according to the thirteenth embodiment of the present disclosure.

[0341] According to the thirteenth embodiment, the optical imaging system 1300 may include a first lens 1310, a second lens 1320, a third lens 1330, a fourth lens 1340, a fifth lens 1350 and a sixth lens 1360 arranged in sequence from the object side toward the image side, and may also include an infrared cutoff filter 1370 and an image sensor 1380 arranged on the image side of the sixth lens 1360.

[0342] The first lens 1310 may have a positive refractive power. The object side surface of the first lens 1310 may have a convex shape in the paraxial region, and the image side surface of the first lens 1310 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 1310 may be formed of plastic. The first lens 1310 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 1310 may be aspherical.

[0343] The second lens 1320 may have a positive refractive power. The object side surface and the image side surface of the second lens 1320 may have a convex shape in the paraxial region. The second lens 1320 may be formed of plastic. The second lens 1320 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 1320 may be aspherical.

[0344] The third lens 1330 may have a negative refractive power. The object side surface and the image side surface of the third lens 1330 may have a concave shape in the paraxial region. The third lens 1330 may be formed of plastic. In detail, the third lens 1330 may be formed of a plastic material having optical properties different from those of the second lens 1320 (e.g., refractive index and Abbe number). The third lens 1330 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 1330 may be aspherical.

[0345] The fourth lens 1340 may have a positive refractive power. The object side surface of the fourth lens 1340 may have a concave shape in the paraxial region, and the image side surface of the fourth lens 1340 may have a convex shape in the paraxial region. The fourth lens 1340 may be formed of plastic. In detail, the fourth lens 1340 may be formed of a plastic material having optical properties different from those of the third lens 1330 (e.g., refractive index and Abbe number). The fourth lens 1340 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 1340 may be aspherical.

[0346] The fifth lens 1350 may have a positive refractive power. The object side surface of the fifth lens 1350 may have a concave shape in the paraxial region, and the image side surface of the fifth lens 1350 may have a convex shape in the paraxial region. The fifth lens 1350 may be formed of plastic. In detail, the fifth lens 1350 may be formed of a plastic material having optical properties different from those of the fourth lens 1340 (e.g., refractive index and Abbe number). The fifth lens 1350 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 1350 may be aspherical.

[0347] The sixth lens 1360 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 1360 may have a concave shape in the paraxial region. The sixth lens 1360 may be formed of plastic. In detail, the sixth lens 1360 may be formed of a plastic material having optical properties different from those of the fifth lens 1350 (e.g., refractive index and Abbe number). The sixth lens 1360 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 1360 may be aspherical.

[0348] The prism P may be disposed between the first lens 1310 and the second lens 1320. The first lens 1310 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 1320 to the sixth lens 1360 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0349] Table 25 shows optical parameters and physical parameters of the optical imaging system 1300 according to the thirteenth embodiment of the present disclosure.

[0350] Table 25

[0351]

[0352]

[0353] Table 26 shows aspherical surface data of the optical imaging system 1300 according to the thirteenth embodiment of the present disclosure.

[0354] Table 26

[0355]

[0356]

[0357] Fourteenth embodiment

[0358] Fig.14A is a structural diagram of an optical imaging system according to a fourteenth embodiment of the present disclosure, and Fig. 14B is a graph showing aberration characteristics of the optical imaging system according to the fourteenth embodiment of the present disclosure.

[0359] According to the fourteenth embodiment, the optical imaging system 1400 may include a first lens 1410, a second lens 1420, a third lens 1430, a fourth lens 1440, a fifth lens 1450 and a sixth lens 1460 arranged in sequence from the object side toward the image side, and may also include an infrared cutoff filter 1470 and an image sensor 1480 arranged on the image side of the sixth lens 1460.

[0360] The first lens 1410 may have a positive refractive power. The object side surface of the first lens 1410 may have a convex shape in the paraxial region, and the image side surface of the first lens 1410 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 1410 may be formed of plastic. The first lens 1410 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 1410 may be aspherical.

[0361] The second lens 1420 may have a positive refractive power. The object side surface and the image side surface of the second lens 1420 may have a convex shape in the paraxial region. The second lens 1420 may be formed of plastic. The second lens 1420 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 1420 may be aspherical.

[0362] The third lens 1430 may have a negative refractive power. The object side surface and the image side surface of the third lens 1430 may have a concave shape in the paraxial region. The third lens 1430 may be formed of plastic. In detail, the third lens 1430 may be formed of a plastic material having optical properties different from those of the second lens 1420 (e.g., refractive index and Abbe number). The third lens 1430 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 1430 may be aspherical.

[0363] The fourth lens 1440 may have a negative refractive power. The object side surface of the fourth lens 1440 may have a concave shape in the paraxial region, and the image side surface of the fourth lens 1440 may have a convex shape in the paraxial region. The fourth lens 1440 may be formed of plastic. In detail, the fourth lens 1440 may be formed of a plastic material having optical properties different from those of the third lens 1430 (e.g., refractive index and Abbe number). The fourth lens 1440 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 1440 may be aspherical.

[0364] The fifth lens 1450 may have a positive refractive power. The object side surface and the image side surface of the fifth lens 1450 may have a convex shape in the paraxial region. The fifth lens 1450 may be formed of plastic. In detail, the fifth lens 1450 may be formed of a plastic material having optical properties different from those of the fourth lens 1440 (e.g., refractive index and Abbe number). The fifth lens 1450 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 1450 may be aspherical.

[0365] The sixth lens 1460 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 1460 may have a concave shape in the paraxial region. The sixth lens 1460 may be formed of plastic. In detail, the sixth lens 1460 may be formed of a plastic material having optical properties different from those of the fifth lens 1450 (e.g., refractive index and Abbe number). The sixth lens 1460 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 1460 may be aspherical.

[0366] The prism P may be disposed between the first lens 1410 and the second lens 1420. The first lens 1410 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 1420 to the sixth lens 1460 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0367] Table 27 shows optical parameters and physical parameters of the optical imaging system 1400 according to the fourteenth embodiment of the present disclosure.

[0368] Table 27

[0369]

[0370]

[0371] Table 28 shows aspherical surface data of the optical imaging system 1400 according to the fourteenth embodiment of the present disclosure.

[0372] Table 28

[0373]

[0374]

[0375] Fifteenth Embodiment

[0376] Fig.15A is a structural diagram of an optical imaging system according to a fifteenth embodiment of the present disclosure, and Fig. 15B is a graph showing aberration characteristics of the optical imaging system according to the fifteenth embodiment of the present disclosure.

[0377] According to the fifteenth embodiment, the optical imaging system 1500 may include a first lens 1510, a second lens 1520, a third lens 1530, a fourth lens 1540, a fifth lens 1550 and a sixth lens 1560 arranged in sequence from the object side toward the image side, and may also include an infrared cutoff filter 1570 and an image sensor 1580 arranged on the image side of the sixth lens 1560.

[0378] The first lens 1510 may have a positive refractive power. The object side surface of the first lens 1510 may have a convex shape in the paraxial region, and the image side surface of the first lens 1510 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 1510 may be formed of plastic. The first lens 1510 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 1510 may be aspherical.

[0379] The second lens 1520 may have a positive refractive power. The object side surface and the image side surface of the second lens 1520 may have a convex shape in the paraxial region. The second lens 1520 may be formed of plastic. The second lens 1520 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 1520 may be aspherical.

[0380] The third lens 1530 may have a negative refractive power. The object side surface and the image side surface of the third lens 1530 may have a concave shape in the paraxial region. The third lens 1530 may be formed of plastic. In detail, the third lens 1530 may be formed of a plastic material having optical properties different from those of the second lens 1520 (e.g., refractive index and Abbe number). The third lens 1530 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 1530 may be aspherical.

[0381] The fourth lens 1540 may have a positive refractive power. The object side surface of the fourth lens 1540 may have a concave shape in the paraxial region, and the image side surface of the fourth lens 1540 may have a convex shape in the paraxial region. The fourth lens 1540 may be formed of plastic. In detail, the fourth lens 1540 may be formed of a plastic material having optical properties different from those of the third lens 1530 (e.g., refractive index and Abbe number). The fourth lens 1540 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 1540 may be aspherical.

[0382] The fifth lens 1550 may have a positive refractive power. The object side surface of the fifth lens 1550 may have a concave shape in the paraxial region, and the image side surface of the fifth lens 1550 may have a convex shape in the paraxial region. The fifth lens 1550 may be formed of plastic. In detail, the fifth lens 1550 may be formed of a plastic material having optical properties different from those of the fourth lens 1540 (e.g., refractive index and Abbe number). The fifth lens 1550 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 1550 may be aspherical.

[0383] The sixth lens 1560 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 1560 may have a concave shape in the paraxial region. The sixth lens 1560 may be formed of plastic. In detail, the sixth lens 1560 may be formed of a plastic material having optical properties different from those of the fifth lens 1550 (e.g., refractive index and Abbe number). The sixth lens 1560 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 1560 may be aspherical.

[0384] The prism P may be disposed between the first lens 1510 and the second lens 1520. The first lens 1510 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 1520 to the sixth lens 1560 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0385] Table 29 shows optical parameters and physical parameters of the optical imaging system 1500 according to the fifteenth embodiment of the present disclosure.

[0386] Table 29

[0387]

[0388]

[0389] Table 30 shows aspherical surface data of the optical imaging system 1500 according to the fifteenth embodiment of the present disclosure.

[0390] Table 30

[0391]

[0392]

[0393] Sixteenth Embodiment

[0394] Fig.16A is a structural diagram of an optical imaging system according to a sixteenth embodiment of the present disclosure, and Fig. 16B is a graph showing aberration characteristics of the optical imaging system according to the sixteenth embodiment of the present disclosure.

[0395] According to the sixteenth embodiment, the optical imaging system 1600 includes a first lens 1610, a second lens 1620, a third lens 1630, a fourth lens 1640, a fifth lens 1650 and a sixth lens 1660 arranged in sequence from the object side toward the image side, and may also include an infrared cutoff filter 1670 and an image sensor 1680 arranged on the image side of the sixth lens 1660.

[0396] The first lens 1610 may have a positive refractive power. The object side surface of the first lens 1610 may have a convex shape in the paraxial region, and the image side surface of the first lens 1610 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 1610 may be formed of plastic. The first lens 1610 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 1610 may be aspherical.

[0397] The second lens 1620 may have a positive refractive power. The object side surface and the image side surface of the second lens 1620 may have a convex shape in the paraxial region. The second lens 1620 may be formed of plastic. The second lens 1620 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 1620 may be aspherical.

[0398] The third lens 1630 may have a negative refractive power. The object side surface and the image side surface of the third lens 1630 may have a concave shape in the paraxial region. The third lens 1630 may be formed of plastic. In detail, the third lens 1630 may be formed of a plastic material having optical properties different from those of the second lens 1620 (e.g., refractive index and Abbe number). The third lens 1630 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 1630 may be aspherical.

[0399] The fourth lens 1640 may have a positive refractive power. The object side surface of the fourth lens 1640 may have a concave shape in the paraxial region, and the image side surface of the fourth lens 1640 may have a convex shape in the paraxial region. The fourth lens 1640 may be formed of plastic. In detail, the fourth lens 1640 may be formed of a plastic material having optical properties different from those of the third lens 1630 (e.g., refractive index and Abbe number). The fourth lens 1640 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 1640 may be aspherical.

[0400] The fifth lens 1650 may have a positive refractive power. The object side surface of the fifth lens 1650 may have a concave shape in the paraxial region, and the image side surface of the fifth lens 1650 may have a convex shape in the paraxial region. The fifth lens 1650 may be formed of plastic. In detail, the fifth lens 1650 may be formed of a plastic material having optical properties different from those of the fourth lens 1640 (e.g., refractive index and Abbe number). The fifth lens 1650 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 1650 may be aspherical.

[0401] The sixth lens 1660 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 1660 may have a concave shape in the paraxial region. The sixth lens 1660 may be formed of plastic. In detail, the sixth lens 1660 may be formed of a plastic material having optical properties different from those of the fifth lens 1650 (e.g., refractive index and Abbe number). The sixth lens 1660 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 1660 may be aspherical.

[0402] The prism P may be disposed between the first lens 1610 and the second lens 1620. The first lens 1610 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 1620 to the sixth lens 1660 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0403] Table 31 shows optical parameters and physical parameters of the optical imaging system 1600 according to the sixteenth embodiment of the present disclosure.

[0404] Table 31

[0405]

[0406]

[0407] Table 32 shows aspherical surface data of the optical imaging system 1600 according to the sixteenth embodiment of the present disclosure.

[0408] Table 32

[0409]

[0410]

[0411] Seventeenth Embodiment

[0412] Fig.17A is a structural diagram of an optical imaging system according to a seventeenth embodiment of the present disclosure, and Fig. 17B is a graph showing aberration characteristics of the optical imaging system according to the seventeenth embodiment of the present disclosure.

[0413] According to the seventeenth embodiment, the optical imaging system 1700 may include a first lens 1710, a second lens 1720, a third lens 1730, a fourth lens 1740, a fifth lens 1750 and a sixth lens 1760 arranged in sequence from the object side toward the image side, and may also include an infrared cutoff filter 1770 and an image sensor 1780 arranged on the image side of the sixth lens 1760.

[0414] The first lens 1710 may have a positive refractive power. The object side surface of the first lens 1710 may have a convex shape in the paraxial region, and the image side surface of the first lens 1710 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 1710 may be formed of plastic. The first lens 1710 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 1710 may be aspherical.

[0415] The second lens 1720 may have a positive refractive power. The object side surface and the image side surface of the second lens 1720 may have a convex shape in the paraxial region. The second lens 1720 may be formed of plastic. The second lens 1720 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 1720 may be aspherical.

[0416] The third lens 1730 may have a negative refractive power. The object side surface and the image side surface of the third lens 1730 may have a concave shape in the paraxial region. The third lens 1730 may be formed of plastic. In detail, the third lens 1730 may be formed of a plastic material having optical properties different from those of the second lens 1720 (e.g., refractive index and Abbe number). The third lens 1730 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 1730 may be aspherical.

[0417] The fourth lens 1740 may have a negative refractive power. The object side surface of the fourth lens 1740 may have a concave shape in the paraxial region, and the image side surface of the fourth lens 1740 may have a convex shape in the paraxial region. The fourth lens 1740 may be formed of plastic. In detail, the fourth lens 1740 may be formed of a plastic material having optical properties different from those of the third lens 1730 (e.g., refractive index and Abbe number). The fourth lens 1740 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 1740 may be aspherical.

[0418] The fifth lens 1750 may have a positive refractive power. The object side surface and the image side surface of the fifth lens 1750 may have a convex shape in the paraxial region. The fifth lens 1750 may be formed of plastic. In detail, the fifth lens 1750 may be formed of a plastic material having optical properties different from those of the fourth lens 1740 (e.g., refractive index and Abbe number). The fifth lens 1750 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 1750 may be aspherical.

[0419] The sixth lens 1760 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 1760 may have a concave shape in the paraxial region. The sixth lens 1760 may be formed of plastic. In detail, the sixth lens 1760 may be formed of a plastic material having optical properties different from those of the fifth lens 1750 (e.g., refractive index and Abbe number). The sixth lens 1760 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 1760 may be aspherical.

[0420] The prism P may be disposed between the first lens 1710 and the second lens 1720. The first lens 1710 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 1720 to the sixth lens 1760 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0421] Table 33 shows optical parameters and physical parameters of the optical imaging system 1700 according to the seventeenth embodiment of the present disclosure.

[0422] Table 33

[0423]

[0424]

[0425] Table 34 shows aspherical surface data of the optical imaging system 1700 according to the seventeenth embodiment of the present disclosure.

[0426] Table 34

[0427]

[0428]

[0429] Eighteenth Embodiment

[0430] Fig.18A is a structural diagram of an optical imaging system according to an eighteenth embodiment of the present disclosure, and Fig.18B is a graph showing aberration characteristics of the optical imaging system according to the eighteenth embodiment of the present disclosure.

[0431] According to the eighteenth embodiment, the optical imaging system 1800 may include a first lens 1810, a second lens 1820, a third lens 1830, a fourth lens 1840, a fifth lens 1850 and a sixth lens 1860 arranged in sequence from the object side toward the image side, and may also include an infrared cutoff filter 1870 and an image sensor 1880 arranged on the image side of the sixth lens 1860.

[0432] The first lens 1810 may have a positive refractive power. The object side surface of the first lens 1810 may have a convex shape in the paraxial region, and the image side surface of the first lens 1810 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 1810 may be formed of plastic. The first lens 1810 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 1810 may be aspherical.

[0433] The second lens 1820 may have a positive refractive power. The object side surface and the image side surface of the second lens 1820 may have a convex shape in the paraxial region. The second lens 1820 may be formed of plastic. The second lens 1820 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 1820 may be aspherical.

[0434] The third lens 1830 may have a negative refractive power. The object side surface and the image side surface of the third lens 1830 may have a concave shape in the paraxial region. The third lens 1830 may be formed of plastic. In detail, the third lens 1830 may be formed of a plastic material having optical properties different from those of the second lens 1820 (e.g., refractive index and Abbe number). The third lens 1830 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 1830 may be aspherical.

[0435] The fourth lens 1840 may have a negative refractive power. The object side surface of the fourth lens 1840 may have a concave shape in the paraxial region, and the image side surface of the fourth lens 1840 may have a convex shape in the paraxial region. The fourth lens 1840 may be formed of plastic. In detail, the fourth lens 1840 may be formed of a plastic material having optical properties different from those of the third lens 1830 (e.g., refractive index and Abbe number). The fourth lens 1840 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 1840 may be aspherical.

[0436] The fifth lens 1850 may have a positive refractive power. The object side surface of the fifth lens 1850 may have a concave shape in the paraxial region, and the image side surface of the fifth lens 1850 may have a convex shape in the paraxial region. The fifth lens 1850 may be formed of plastic. In detail, the fifth lens 1850 may be formed of a plastic material having optical properties different from those of the fourth lens 1840 (e.g., refractive index and Abbe number). The fifth lens 1850 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 1850 may be aspherical.

[0437] The sixth lens 1860 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 1860 may have a concave shape in the paraxial region. The sixth lens 1860 may be formed of plastic. In detail, the sixth lens 1860 may be formed of a plastic material having optical properties different from those of the fifth lens 1850 (e.g., refractive index and Abbe number). The sixth lens 1860 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 1860 may be aspherical.

[0438] The prism P may be disposed between the first lens 1810 and the second lens 1820. The first lens 1810 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 1820 to the sixth lens 1860 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0439] Table 35 shows optical parameters and physical parameters of the optical imaging system 1800 according to the eighteenth embodiment of the present disclosure.

[0440] Table 35

[0441] surface Radius of curvature Thickness / distance Refractive Index Abbe number Half Aperture object infinity infinity 1 infinity 0.000 2 8.230 1.300 1.536 55.7 3.78 3 11.852 1.150 3.54 4 infinity 3.200 1.931 20.9 2.90 5 infinity 3.200 1.931 20.9 4.24 6 infinity 3.300 2.90 7 4.036 1.929 1.536 55.7 2.65 8 -9.521 0.612 2.57 9 -9.095 1.110 1.619 25.9 2.48 10 3.684 0.895 2.06 11 -17.030 0.400 1.546 56.3 2.07 12 -18.230 0.116 2.20 13 -52.386 1.061 1.667 20.4 2.27 14 -4.512 0.398 2.34 15 -23.687 0.860 1.644 23.5 2.29 16 10.777 4.300 2.55 17 infinity 0.110 1.518 64.2 3.40 18 infinity 1.750 3.42 image infinity 3.60

[0442] Table 36 shows aspherical surface data of the optical imaging system 1800 according to the eighteenth embodiment of the present disclosure.

[0443] Table 36

[0444]

[0445]

[0446] Nineteenth Embodiment

[0447] Fig.19A is a structural diagram of an optical imaging system according to a nineteenth embodiment of the present disclosure, and Fig.19B is a graph showing aberration characteristics of the optical imaging system according to the nineteenth embodiment of the present disclosure.

[0448] According to the nineteenth embodiment, the optical imaging system 1900 may include a first lens 1910, a second lens 1920, a third lens 1930, a fourth lens 1940, a fifth lens 1950 and a sixth lens 1960 arranged in sequence from the object side toward the image side, and may also include an infrared cutoff filter 1970 and an image sensor 1980 arranged on the image side of the sixth lens 1960.

[0449] The first lens 1910 may have a positive refractive power. The object side surface of the first lens 1910 may have a convex shape in the paraxial region, and the image side surface of the first lens 1910 may have a concave shape in the paraxial region, that is, a meniscus shape convex toward the object side. The first lens 1910 may be formed of plastic. The first lens 1910 may be an aspherical lens. For example, the object side surface and the image side surface of the first lens 1910 may be aspherical.

[0450] The second lens 1920 may have a positive refractive power. The object side surface and the image side surface of the second lens 1920 may have a convex shape in the paraxial region. The second lens 1920 may be formed of plastic. The second lens 1920 may be an aspherical lens. For example, the object side surface and the image side surface of the second lens 1920 may be aspherical.

[0451] The third lens 1930 may have a negative refractive power. The object side surface and the image side surface of the third lens 1930 may have a concave shape in the paraxial region. The third lens 1930 may be formed of plastic. In detail, the third lens 1930 may be formed of a plastic material having optical properties different from those of the second lens 1920 (e.g., refractive index and Abbe number). The third lens 1930 may be an aspherical lens. For example, the object side surface and the image side surface of the third lens 1930 may be aspherical.

[0452] The fourth lens 1940 may have a negative refractive power. The object side surface of the fourth lens 1940 may have a concave shape in the paraxial region, and the image side surface of the fourth lens 1940 may have a convex shape in the paraxial region. The fourth lens 1940 may be formed of plastic. In detail, the fourth lens 1940 may be formed of a plastic material having optical properties different from those of the third lens 1930 (e.g., refractive index and Abbe number). The fourth lens 1940 may be an aspherical lens. For example, the object side surface and the image side surface of the fourth lens 1940 may be aspherical.

[0453] The fifth lens 1950 may have a positive refractive power. The object side surface and the image side surface of the fifth lens 1950 may have a convex shape in the paraxial region. The fifth lens 1950 may be formed of plastic. In detail, the fifth lens 1950 may be formed of a plastic material having optical properties different from those of the fourth lens 1940 (e.g., refractive index and Abbe number). The fifth lens 1950 may be an aspherical lens. For example, the object side surface and the image side surface of the fifth lens 1950 may be aspherical.

[0454] The sixth lens 1960 may have a negative refractive power. The object side surface and the image side surface of the sixth lens 1960 may have a concave shape in the paraxial region. The sixth lens 1960 may be formed of plastic. In detail, the sixth lens 1960 may be formed of a plastic material having optical properties different from those of the fifth lens 1950 (e.g., refractive index and Abbe number). The sixth lens 1960 may be an aspherical lens. For example, the object side surface and the image side surface of the sixth lens 1960 may be aspherical.

[0455] The prism P may be disposed between the first lens 1910 and the second lens 1920. The first lens 1910 disposed on the object side relative to the prism P may constitute a first lens group LG1, and the second lens 1920 to the sixth lens 1960 disposed on the image side relative to the prism P may constitute a second lens group LG2. Both the first lens group LG1 and the second lens group LG2 may have positive refractive power.

[0456] Table 37 shows optical parameters and physical parameters of the optical imaging system 1900 according to the nineteenth embodiment of the present disclosure.

[0457] Table 37

[0458] surface Radius of curvature Thickness / distance Refractive Index Abbe number Half Aperture object infinity infinity 1 infinity 0.000 2 8.418 1.300 1.536 55.7 3.78 3 12.226 1.150 3.54 4 infinity 3.200 1.931 20.9 2.90 5 infinity 3.200 1.931 20.9 4.24 6 infinity 3.300 2.90 7 4.055 1.828 1.536 55.7 2.65 8 -7.720 0.109 2.57 9 -7.722 1.135 1.619 25.9 2.48 10 3.710 1.000 2.06 11 -15.694 0.400 1.546 56.3 2.07 12 -18.253 0.100 2.20 13 79.941 1.104 1.667 20.4 2.27 14 -4.271 0.523 2.34 15 -11.824 0.700 1.644 23.5 2.29 16 10.518 4.300 2.55 17 infinity 0.110 1.518 64.2 3.40 18 infinity 1.665 3.42 image infinity 3.60

[0459] Table 38 shows aspherical surface data of the optical imaging system 1900 according to the nineteenth embodiment of the present disclosure.

[0460] Table 38

[0461]

[0462]

[0463] Table 39 shows optical parameters and physical parameters related to the focal length and conditional expressions of the optical imaging system according to an exemplary embodiment of the present disclosure.

[0464] Table 39

[0465]

[0466]

[0467]

[0468] The optical imaging system according to the exemplary embodiment of the present disclosure described above has the effect of improving low-light image capturing performance.

[0469] Although specific examples have been shown and described above, it will be apparent after understanding the present disclosure 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 are understood in a descriptive sense only and not for limiting purposes. The description of the features or aspects in each example should be considered to be applicable to similar features or aspects in other examples. If the described techniques are performed in a different order, and / or if the components in the described system, architecture, device or circuit are replaced or supplemented in a different manner and / or by other components or their equivalents, appropriate results can still be achieved. Therefore, the scope of the present disclosure is not limited by specific embodiments, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be understood to be included in the present disclosure.

Claims

1. An optical imaging system, characterized in that: The optical imaging system comprises: A first lens group includes at least one lens arranged in the direction of a first optical axis; a second lens group including at least one lens arranged in a direction of a second optical axis perpendicular to the first optical axis; and a prism disposed between the first lens group and the second lens group and configured to convert a path of light from a direction of the first optical axis to a direction of the second optical axis, Among them, the conditional expression 0.20 is satisfied <d(LG1P) / d(PLG2)<0.60, Wherein, d(LG1P) is the distance from the image side surface of the lens disposed closest to the image side in the first lens group to the incident surface of the prism on the first optical axis, and d(PLG2) is the distance from the exit surface of the prism to the object side surface of the lens disposed closest to the object side in the second lens group on the second optical axis.

2. The optical imaging system according to claim 1, characterized in that: The first lens group includes a first lens having positive refractive power, and the second lens group includes a second lens having positive refractive power, a third lens having negative refractive power, a fourth lens having refractive power, a fifth lens having positive refractive power, and a sixth lens having negative refractive power.

3. The optical imaging system according to claim 1, characterized in that: Satisfies the conditional expression 0.70mm -1 ≤Fno / dP1<1.00mm -1 , Wherein, Fno is the F number of the optical imaging system, and dP1 is the distance from the incident surface of the prism to the reflecting surface of the prism on the first optical axis.

4. The optical imaging system according to claim 1, characterized in that: Satisfies the conditional expression 0.95≤fLG1 / fLG2≤3.50, Wherein, fLG1 is the focal length of the first lens group, and fLG2 is the focal length of the second lens group.

5. The optical imaging system according to claim 1, characterized in that: Satisfy the conditional expression 2.20≤Fno<3.20, Wherein, Fno is the F number of the optical imaging system.

6. The optical imaging system according to claim 1, characterized in that: Satisfies the conditional expression 8.00mm <dLG12<11.00mm, Among them, dLG12 is the distance from the image side surface of the lens disposed closest to the image side in the first lens group to the object side surface of the lens disposed closest to the object side in the second lens group.

7. The optical imaging system according to claim 1, characterized in that: Satisfies the conditional expression 0.10≤f / fLG1<0.60, Wherein, f is the total focal length of the optical imaging system, and fLG1 is the focal length of the first lens group.

8. The optical imaging system according to claim 1, characterized in that: Satisfies the conditional expression 0.50≤f / fLG2<0.95, Wherein, f is the total focal length of the optical imaging system, and fLG2 is the focal length of the second lens group.

9. The optical imaging system according to claim 1, characterized in that: Satisfies the conditional expression 0.20 <dLG2 / OAL≤0.40, Wherein, dLG2 is the distance on the second optical axis from the object side surface of the lens disposed closest to the object side in the second lens group to the image side surface of the lens disposed closest to the image side in the second lens group, and OAL is the sum of the distance on the first optical axis from the object side surface of the lens disposed closest to the object side in the first lens group to the reflective surface of the prism and the distance on the second optical axis from the reflective surface of the prism to the image plane.

10. An optical imaging system, characterized in that The optical imaging system comprises: A first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens are arranged in order from the object side toward the image side; and a prism disposed between the first lens and the second lens to convert the path of the incident light from the direction of the first optical axis to the direction of the second optical axis, Among them, the conditional expression is satisfied 8.00mm <dLG12<11.00mm, Wherein, dLG12 is the distance from the image side surface of the first lens to the object side surface of the second lens.

11. The optical imaging system according to claim 10, characterized in that: The third lens has negative refractive power, and both the object-side surface and the image-side surface of the third lens have a concave shape.

12. The optical imaging system according to claim 10, characterized in that: Satisfies the conditional expression 17.00mm <R1+R2<30.00mm, Wherein, R1 is the curvature radius of the object-side surface of the first lens, and R2 is the curvature radius of the image-side surface of the first lens.

13. The optical imaging system according to claim 10, characterized in that: The fourth lens has negative refractive power and a concave image-side surface.

14. The optical imaging system according to claim 10, characterized in that: Satisfies the conditional expression 0.20 <dLG2 / OAL≤0.40, Wherein, dLG2 is the distance from the object side surface of the second lens to the image side surface of the sixth lens on the second optical axis, and OAL is the sum of the distance from the object side surface of the first lens to the reflective surface of the prism on the first optical axis and the distance from the reflective surface of the prism to the image plane on the second optical axis.

15. The optical imaging system according to claim 10, characterized in that: Satisfying the conditional expression 0.20≤OAL1 / OAL2≤0.35, Wherein, OAL1 is the distance from the object side surface of the first lens to the reflection surface of the prism on the first optical axis, and OAL2 is the distance from the reflection surface of the prism to the image plane on the second optical axis.

16. The optical imaging system according to claim 10, characterized in that: The first lens constitutes a first lens group, and the second to sixth lenses constitute a second lens group, and Among them, the conditional expression 0.95≤fLG1 / fLG2≤3.50 is satisfied. Wherein, fLG1 is the focal length of the first lens group, and fLG2 is the focal length of the second lens group.

17. The optical imaging system according to claim 10, characterized in that: Satisfies the conditional expression 1.25 <ODL1 / PSi<1.60, Wherein, ODL1 is half of the outer diameter of the first lens, and PSi is half of the length of the incident surface of the prism in a direction perpendicular to the first optical axis.

18. An optical imaging system, characterized in that The optical imaging system comprises: A first lens group includes a first lens having refractive power; a second lens group including, arranged in sequence from the object side toward the image side, a second lens having refractive power, a third lens having negative refractive power, a fourth lens having refractive power, a fifth lens having refractive power, and a sixth lens having negative refractive power; and A prism is disposed between the first lens and the second lens to convert a path of incident light from a direction of a first optical axis to a direction of a second optical axis.

19. The optical imaging system according to claim 18, characterized in that: The third lens has a concave object-side surface.

20. The optical imaging system according to claim 18, characterized in that: Satisfying the conditional expression 0.20≤OAL1 / OAL2≤0.35, Wherein, OAL1 is the distance from the object side surface of the first lens to the reflection surface of the prism on the first optical axis, and OAL2 is the distance from the reflection surface of the prism to the image plane on the second optical axis.

Images