Image capturing optical system, image capturing device and electronic device

Abstract

An image capturing optical system, an image capturing device and an electronic device, the image capturing optical system including an image capturing optical lens respectively corresponding to a first mode and a second mode. The image capturing optical lens includes, in order from an object side to an image side, an object-side lens group and a common lens group, where the object-side lens group is a first-mode object-side lens group or a second-mode object-side lens group, and the common lens group includes, in order, a middle lens group and a last lens group. When the image capturing optical lens is in a first mode, the first mode object-side lens group and the common lens group are sequentially arranged along the path direction of an optical path; when the image capturing optical lens is in a second mode, the second mode object-side lens group and the common lens group are sequentially arranged along the path direction of the light path. When specific conditions are met, the use freedom degree of the module space can be improved.

Description

Technical Field

[0001] The present disclosure relates to an imaging optical system and an imaging device, and more particularly to a miniaturized imaging optical system and an imaging device for use in electronic devices. Background Art

[0002] As semiconductor processing technology continues to improve, the performance of electronic photosensitive components has increased, allowing for even smaller pixel sizes. Consequently, optical lenses with high imaging quality have become indispensable. Furthermore, with the rapid advancement of technology, the application range of electronic devices equipped with optical lenses has expanded, and the requirements for optical lenses have also become more diverse. Because previous optical lenses have struggled to strike a balance between image quality, sensitivity, aperture size, size, and viewing angle, the present invention provides an optical lens with high imaging quality to meet these requirements.

[0003] In recent years, electronic products have been driven by a desire for thinner and lighter designs. Consequently, traditional photographic lenses struggle to simultaneously meet the demands for high specifications and miniaturization, particularly for large aperture or telephoto lenses. Existing telephoto lens technology is gradually failing to meet these demands (due to excessive overall length, small aperture, insufficient quality, or inability to miniaturize). Consequently, solutions require different optical characteristics or configurations with optical axis deflections. Due to the thickness limitations of electronic devices, some optical lenses incorporate cuts in the barrel or lens element to reduce the single-axis length, helping to save module space. Furthermore, reflective elements can be used to provide different optical path orientations in the system, giving the lens greater flexibility in its use and demonstrating the telephoto capabilities of long focal lengths. Summary of the Invention

[0004] The imaging optical system, imaging device, and electronic device provided by the present disclosure, through the design of sharing a portion of the lens group and the combined use of reflective elements, help to improve the freedom of use of module space.

[0005] According to the present disclosure, an imaging optical system is provided, which includes an imaging optical lens and at least two openings, corresponding to a first mode and a second mode respectively. The imaging optical lens includes an object side lens group, a first optical path deflection element, and a common lens group in sequence from the object side to the image side, wherein the object side lens group is a first mode object side lens group or a second mode object side lens group, and the common lens group includes an intermediate lens group and a last lens group in sequence. In the first mode, the imaging optical lens receives light from one of the openings, and includes the first mode object side lens group, the first optical path deflection element, and the common lens group in sequence along the direction of the optical path; in the second mode, the imaging optical lens receives light from the other opening, and includes the second mode object side lens group, the first optical path deflection element, and the common lens group in sequence along the direction of the optical path. The first optical path deflection element moves along the optical path to switch the imaging optical lens between the first mode and the second mode. The first mode object-side lens group, the second mode object-side lens group, the intermediate lens group, and the final lens group each include at least one lens, each lens having an object-side surface facing the object side and an image-side surface facing the image side. Preferably, at least two of the lenses in the imaging optical lens are made of plastic.

[0006] According to the present disclosure, an imaging device is provided, comprising the aforementioned imaging optical system and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the imaging optical system.

[0007] According to the present disclosure, an electronic device is provided, comprising the aforementioned imaging device.

[0008] According to the present disclosure, an imaging optical system is provided, comprising an imaging optical lens corresponding to a first mode and a second mode respectively. The imaging optical lens comprises an object side lens group and a common lens group in sequence from the object side to the image side, wherein the object side lens group is a first mode object side lens group or a second mode object side lens group, and the common lens group comprises an intermediate lens group and a last lens group in sequence. When the imaging optical lens is in the first mode, the first mode object side lens group and the common lens group are in sequence along the direction of the optical path; when the imaging optical lens is in the second mode, the second mode object side lens group and the common lens group are in sequence along the direction of the optical path. The first mode object side lens group, the second mode object side lens group, the intermediate lens group and the last lens group all comprise at least one lens, and each lens has an object side surface facing the object side and an image side surface facing the image side. Preferably, at least two of the lenses in the imaging optical lens are made of plastic. Preferably, the total number of lenses in the first mode object-side lens group is at most two, the total number of lenses in the second mode object-side lens group is at most two, and the total number of lenses in the shared lens group is six. The six lenses are, in order, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The center thickness of the first lens is CT1, the center thickness of the fifth lens is CT5, and the distance between the first and second lenses on the optical axis is T12, which preferably satisfies the following condition: 1.60 < (CT1 + T12) / CT5 < 11.0.

[0009] When (CT1+T12) / CT5 meets the above conditions, the configuration of the shared lens group can be adjusted to balance the direction of light in different fields of view during movement, which is beneficial to improving the assembly yield of the imaging optical lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1A A schematic diagram illustrating a first state of an imaging device in a first mode according to a first embodiment of the present disclosure is shown;

[0011] Figure 1B Drawing in accordance with Figure 1A A schematic diagram of the imaging device of the first embodiment in the second state of the first mode;

[0012] Figure 1C Drawing in accordance with Figure 1A A schematic diagram of the imaging device of the first embodiment in the third state of the first mode;

[0013] Figure 1D A schematic diagram illustrating a first state of an imaging device in a second mode according to a first embodiment of the present disclosure;

[0014] Figure 2A From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the first embodiment in the first state of the first mode;

[0015] Figure 2B From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the first embodiment in the second state of the first mode;

[0016] Figure 2C From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the first embodiment in the third state of the first mode;

[0017] Figure 2D From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the first embodiment in the first state of the second mode;

[0018] Figure 3A A schematic diagram illustrating a first state of an imaging device in a first mode according to a second embodiment of the present disclosure is shown;

[0019] Figure 3B Drawing in accordance with Figure 3A A schematic diagram of the imaging device of the second embodiment in the second state of the first mode;

[0020] Figure 3C Drawing in accordance with Figure 3A A schematic diagram of the imaging device of the second embodiment in the third state of the first mode;

[0021] Figure 3D A schematic diagram illustrating an imaging device in a first state of a second mode according to a second embodiment of the present disclosure;

[0022] Figure 4A From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the second embodiment in the first state of the first mode;

[0023] Figure 4B From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the second embodiment in the second state of the first mode;

[0024] Figure 4C From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the second embodiment in the third state of the first mode;

[0025] Figure 4D From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the second embodiment in the first state of the second mode;

[0026] Figure 5A A schematic diagram illustrating a first state of an imaging device in a first mode according to a third embodiment of the present disclosure;

[0027] Figure 5B Drawing in accordance with Figure 5AA schematic diagram of the imaging device of the third embodiment in the second state of the first mode;

[0028] Figure 5C Drawing in accordance with Figure 5A A schematic diagram of the imaging device of the third embodiment in the third state of the first mode;

[0029] Figure 5D A schematic diagram illustrating an imaging device in a first state of a second mode according to a third embodiment of the present disclosure;

[0030] Figure 5E Drawing in accordance with Figure 5D A schematic diagram of the imaging device of the third embodiment in the second state of the second mode;

[0031] Figure 6A From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the third embodiment in the first state of the first mode;

[0032] Figure 6B From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the third embodiment in the second state of the first mode;

[0033] Figure 6C From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the third embodiment in the third state of the first mode;

[0034] Figure 6D From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the third embodiment in the first state of the second mode;

[0035] Figure 6E From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the third embodiment in the second state of the second mode;

[0036] Figure 7A A schematic diagram illustrating a first state of an imaging device in a first mode according to a fourth embodiment of the present disclosure is shown;

[0037] Figure 7B Drawing in accordance with Figure 7A A schematic diagram of the imaging device of the fourth embodiment in the second state of the first mode;

[0038] Figure 7C Drawing in accordance with Figure 7A A schematic diagram of the imaging device of the fourth embodiment in the third state of the first mode;

[0039] Figure 7D A schematic diagram illustrating an imaging device in a first state of a second mode according to a fourth embodiment of the present disclosure;

[0040] Figure 8A From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the fourth embodiment in the first state of the first mode;

[0041] Figure 8B From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the fourth embodiment in the second state of the first mode;

[0042] Figure 8C From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the fourth embodiment in the third state of the first mode;

[0043] Figure 8D From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the fourth embodiment in the first state of the second mode;

[0044] Figure 9A A schematic diagram illustrating a first state of an imaging device in a first mode according to a fifth embodiment of the present disclosure is shown;

[0045] Figure 9B Drawing in accordance with Figure 9A A schematic diagram of the imaging device of the fifth embodiment in the second state of the first mode;

[0046] Figure 9C A schematic diagram illustrating an imaging device in a first state of a second mode according to a fifth embodiment of the present disclosure;

[0047] Figure 10A From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the fifth embodiment in the first state of the first mode;

[0048] Figure 10B From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the fifth embodiment in the second state of the first mode;

[0049] Figure 10C From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the fifth embodiment in the first state of the second mode;

[0050] Figure 11A A schematic diagram illustrating a first state of an imaging device in a first mode according to a sixth embodiment of the present disclosure is shown;

[0051] Figure 11B Drawing in accordance with Figure 11A A schematic diagram of the imaging device of the sixth embodiment in the second state of the first mode;

[0052] Figure 11C A schematic diagram illustrating an imaging device in a first state of a second mode according to a sixth embodiment of the present disclosure;

[0053] Figure 11D Drawing in accordance with Figure 11C A schematic diagram of the imaging device of the sixth embodiment in the second state of the second mode;

[0054] Figure 12A From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the sixth embodiment in the first state of the first mode;

[0055] Figure 12B From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the sixth embodiment in the second state of the first mode;

[0056] Figure 12C From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the sixth embodiment in the first state of the second mode;

[0057] Figure 12D From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device of the sixth embodiment in the second state of the second mode;

[0058] Figure 13A Drawing in accordance with Figure 1A A schematic diagram of the inflection point and critical point of the first state of the imaging device in the first mode in the first embodiment;

[0059] Figure 13B Drawing in accordance with Figure 1D A schematic diagram of the inflection point and critical point of the first state of the second mode of the imaging device in the first embodiment;

[0060] Figure 13C Drawing in accordance with Figure 1A A schematic diagram of parameters of a first state of a first mode of an imaging device in a first embodiment;

[0061] Figure 13D Drawing in accordance with Figure 1D A schematic diagram of parameters of a first state of the second mode of the imaging device in the first embodiment;

[0062] Figure 14A A schematic diagram of switching between a first mode and a second mode of an imaging optical system in an imaging device of the present disclosure;

[0063] Figure 14B Another schematic diagram of switching between the first mode and the second mode of the imaging optical system in the imaging device of the present disclosure;

[0064] Figure 14C Another schematic diagram of switching between the first mode and the second mode of the imaging optical system in the imaging device of the present disclosure;

[0065] Figure 14DAnother schematic diagram of switching between the first mode and the second mode of the imaging optical system in the imaging device of the present disclosure;

[0066] Figure 15A A schematic diagram of a non-circular aperture of an imaging optical system in an imaging device of the present disclosure;

[0067] Figure 15B A schematic diagram of another non-circular aperture of the imaging optical system in the imaging device of the present disclosure;

[0068] Figure 16A A schematic diagram of a non-circular lens of an imaging optical system in an imaging device of the present disclosure;

[0069] Figure 16B A schematic diagram of another non-circular lens in the imaging optical system of the imaging device of the present disclosure;

[0070] Figure 17 FIG2 is a perspective diagram illustrating an imaging device according to a seventh embodiment of the present disclosure;

[0071] Figure 18A A schematic diagram illustrating one side of an electronic device according to an eighth embodiment of the present disclosure;

[0072] Figure 18B Drawing in accordance with Figure 18A A schematic diagram of the other side of the electronic device;

[0073] Figure 18C Drawing in accordance with Figure 18A System diagram of the electronic device;

[0074] Figure 19 A schematic diagram illustrating one side of an electronic device according to a ninth embodiment of the present disclosure;

[0075] Figure 20 A schematic diagram illustrating one side of an electronic device according to a tenth embodiment of the present disclosure;

[0076] Figure 21A A schematic diagram illustrating one side of an electronic device according to an eleventh embodiment of the present disclosure; and

[0077] Figure 21B Drawing in accordance with Figure 21A Schematic diagram of the other side of the electronic device.

[0078]

Explanation of symbols

[0079] 200, 300, 400, 500: Electronic devices

[0080] 1,2,3,4,5,6,100,110,120,130,140,310,320,330,410,420,430,440,450,460,470,480,490,510,520,530,540: Imaging device

[0081] 101: Imaging Lens

[0082] 102: driving device group

[0083] 104: Image stabilization module

[0084] 201, 301, 401: Flash module

[0085] 202: Focus assist module

[0086] 203: Image Signal Processor

[0087] 204,504: User Interface

[0088] 205: Image Software Processor

[0089] 206: Subject

[0090] IS,103: Electronic photosensitive element

[0091] S1, S2, S3, S4: aperture

[0092] A11, A21, A22: Lens

[0093] E1: First lens

[0094] E2: Second lens

[0095] E3: The third lens

[0096] E4: The fourth lens

[0097] E5: Fifth lens

[0098] E6: Sixth lens

[0099] E7: Filter element

[0100] IP: Inflection Point

[0101] CP: critical point

[0102] IMG: Imaging surface

[0103] H1, H2: opening

[0104] GA: Object side lens group

[0105] GA1: First mode object side lens group

[0106] GA2: Second mode object side lens group

[0107] GA3: The third mode object side lens group

[0108] GA Move: Object side lens group movement direction

[0109] GB: Shared lens group

[0110] GB Move: Common lens group moving direction

[0111] Gm: Middle lens group

[0112] Gn: Final lens group

[0113] P1: First optical path turning element

[0114] P2: Second optical path turning element

[0115] OA1: first optical axis

[0116] OA2: Second optical axis

[0117] OA3: Third optical axis

[0118] OA4: Fourth optical axis

[0119] X: long axis

[0120] Y: short axis

[0121] Ra: Effective radius of the major axis

[0122] Rb: Effective radius of minor axis

[0123] ImgH1: Maximum image height of the imaging optical lens in the first mode

[0124] ImgH2: Maximum image height of the imaging optical lens in the second mode

[0125] CT1: Center thickness of the first lens

[0126] CT5: Center thickness of the fifth lens

[0127] CT6: Center thickness of the sixth lens

[0128] CTmax: Maximum lens center thickness

[0129] T12: The distance between the first lens and the second lens on the optical axis

[0130] TGAB: The distance on the optical axis between the lens surface closest to the image side of the object-side lens group and the lens surface closest to the object side of the shared lens group

[0131] DGA: The distance on the optical axis between the lens surface closest to the object side of the object side lens group and the lens surface closest to the image side of the object side lens group.

[0132] DGB: The distance on the optical axis from the lens surface closest to the object side to the lens surface closest to the image side in the shared lens group

[0133] TLmax: The maximum distance from the lens surface closest to the object side to the imaging plane on the optical axis

[0134] YGAR1min: The minimum optical effective radius of the lens surface closest to the object side DETAILED DESCRIPTION

[0135] The present disclosure provides an imaging optical system including an imaging optical lens corresponding to a first mode and a second mode. The imaging optical lens comprises, in order from the object side to the image side, an object-side lens group and a common lens group. The object-side lens group can be either a first-mode object-side lens group or a second-mode object-side lens group. The common lens group comprises, in order, an intermediate lens group and a final lens group. In the first mode, the imaging optical lens comprises, in order, the first-mode object-side lens group and the common lens group along the optical path. In the second mode, the imaging optical lens comprises, in order, the second-mode object-side lens group and the common lens group along the optical path.

[0136] The imaging optical system may further include at least two apertures, corresponding to a first mode and a second mode, respectively. In the first mode, the imaging optical lens receives light from one of the at least two apertures, and sequentially along the optical path includes a first-mode object-side lens group, a first optical path deflection element, and a shared lens group. In the second mode, the imaging optical lens receives light from the other of the at least two apertures, and sequentially along the optical path includes a second-mode object-side lens group, a first optical path deflection element, and a shared lens group. This allows for at least two different imaging modes, with a common lens group used across the different modes, thereby reducing the number of lenses, significantly improving the utilization rate of individual lenses, and increasing the freedom of module space usage.

[0137] Furthermore, the imaging optical lens may further comprise, from the object side to the image side, an object-side lens group, a first optical path deflection element, and a common lens group. The first object-side lens group, the second object-side lens group, the intermediate lens group, and the final lens group all comprise at least one lens, each having an object-side surface facing the object side and an image-side surface facing the image side. This configuration of at least two lens groups allows for a balance between different imaging modes, size, object distance range, image quality, and assembly ease.

[0138] The first optical path deflection element can be moved along the optical path, enabling the imaging optical lens to switch between a first mode and a second mode. Alternatively, the first optical path deflection element can be rotated or moved along the optical path to switch between the first and second modes. By arranging a common optical path deflection element between different modes, different lens groups can be connected by movement of the optical path deflection element to switch between different modes, providing the imaging optical system with diverse optical path directions and greater flexibility in lens usage.

[0139] The maximum total number of lenses in the first mode's object-side lens group is two, the maximum total number of lenses in the second mode's object-side lens group is three, and the total number of lenses in the shared lens group is six. Furthermore, the maximum total number of lenses in the first mode's object-side lens group is two, the maximum total number of lenses in the second mode's object-side lens group is two, and the total number of lenses in the shared lens group is six. This configuration, by limiting the number of lenses, allows the imaging optical system to achieve a balance between size and image quality.

[0140] At least one of the first and second modes has multiple shooting states, allowing for shooting at object distances greater than 1000mm and within 350mm, or greater than 1000mm and within 250mm. This allows the imaging optical lens to capture images at different object distances, facilitating applications such as long-range and close-up photography.

[0141] The first and second object-side lens groups are both fixed relative to the final lens group, while the intermediate lens group is movable along the optical path relative to the final lens group. This facilitates achieving focusing effects in different modes and at different object distances, while simplifying the optical design and mechanical complexity.

[0142] The six lenses in the aforementioned shared lens group are, in order, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The fourth lens has negative refractive power. This helps balance the overall refractive power of the imaging optical system, balancing the convergence and divergence of light, and improving the quality of light collection across the entire field of view.

[0143] The image-side surface of the second lens is concave, which helps to receive light in different modes and states and balance the spherical aberration of the imaging optical system.

[0144] The image-side surface of the third lens is convex, which effectively converges light during focusing and helps balance the overall length of the imaging optical system.

[0145] The lens closest to the imaging surface of the imaging optical lens has at least one inflection point, thereby adjusting the angle and position of the light incident on the imaging surface to facilitate correction of astigmatism and distortion.

[0146] At least one lens in the imaging optical lens has at least one critical point. Thereby, the degree of change on the lens surface can be enhanced, which helps to compress the volume and improve the image quality.

[0147] The fifth lens has at least one inflection point. Thereby, the amount of surface shape change of the common lens can be increased, the traveling direction of light can be balanced, and at the same time, the range of the back focal length can be controlled to correct the image surface curvature.

[0148] When the object distance is set to the shooting state of infinity, when the imaging optical lens switches between the first mode and the second mode, the moving distance of the first light path turning element relative to the last lens group along the light path is TPM12, and the length along the optical axis inside the first light path turning element is CTP1, which satisfies the following condition: 0.65 < TPM12 / CTP1 < 2.70. Thereby, the moving amount of the light path turning element during the mode switching can be controlled to adjust the spatial configuration of the lens group, so that the imaging optical lens can provide stable image quality during the mode switching and focusing processes. Furthermore, it can satisfy the following condition: 0.90 < TPM12 / CTP1 < 2.20.

[0149] The maximum image height of the imaging optical lens in the first mode is ImgH1, and the maximum image height of the imaging optical lens in the second mode is ImgH2, which satisfies the following condition: 1.50 < ImgH1 / ImgH2 < 3.00. Thereby, it can be ensured that there are certain specification differences between different modes to expand the application range.

[0150] In the first mode and the second mode, when the object distance is set to the shooting state of infinity, the values obtained by dividing the overall focal length of the imaging optical lens by the focal lengths of the three lenses closest to the imaging surface respectively, and the sum of the three values is ΣPGn, which satisfies the following condition: -5.00 < ΣPGn < 1.80. Thereby, the refractive power at the rear end of the imaging optical system can be controlled within a reasonable range, which is beneficial to balancing the overall refractive power distribution of the imaging optical system and adjusting the back focal length. Furthermore, it can satisfy the following condition: -4.00 < ΣPGn < -0.50. Furthermore, it can satisfy the following condition: -3.80 < ΣPGn < -0.80.

[0151] The focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the fourth lens is f4, which satisfies the following condition: 0.80 < (|f1| + |f2|) / |f4| < 2.0. Thereby, the refractive power configuration in the common lens group can be adjusted, which helps to balance the image quality in different modes and different shooting states. Furthermore, it can satisfy the following condition: 0.90 < (|f1| + |f2|) / |f4| < 1.80.

[0152] The focal length of the first lens is f1, and the focal length of the fourth lens is f4, which satisfy the following conditions: -1.20 < f1 / f4 < 0.00. Thereby, the refractive powers of the first lens and the fourth lens can be coordinated with each other, which helps to balance the image quality when the imaging optical system focuses on distant and near objects. Furthermore, it can satisfy the following conditions: -1.00 < f1 / f4 < -0.20. Furthermore, it can satisfy the following conditions: -0.85 ≤ f1 / f4 ≤ -0.67.

[0153] The central thickness of the first lens is CT1, and the central thickness of the fifth lens is CT5. The distance between the first lens and the second lens on the optical axis is T12, which satisfy the following conditions: 1.60 < (CT1 + T12) / CT5 < 11.0. Thereby, the configuration of the common lens group can be adjusted to balance the light paths of different fields of view during the movement, and it is beneficial to improve the assembly yield of the imaging optical lens. Furthermore, it can satisfy the following conditions: 1.80 < (CT1 + T12) / CT5 < 7.50. Furthermore, it can satisfy the following conditions: 2.63 ≤ (CT1 + T12) / CT5 ≤ 4.24.

[0154] In the single mode of the imaging optical lens, the distance between the lens surface of the object-side lens group closest to the image side and the lens surface of the common lens group closest to the object side on the optical axis is TGAB, and in the common lens group, the distance from the lens surface closest to the object side to the lens surface closest to the image side on the optical axis is DGB, which satisfy the following conditions: 0.75 < TGAB / DGB < 4.0. Thereby, the volume of the common lens group can be used to assist in adjusting the appropriate lens group spacing, which is beneficial to the light path folding in different modes. Furthermore, it can satisfy the following conditions: 0.80 < TGAB / DGB < 3.60. Furthermore, it can satisfy the following conditions: 0.96 ≤ TGAB / DGB ≤ 3.04.

[0155] The distance between the first lens and the second lens on the optical axis is T12, and the focal length of the fourth lens is f4, which satisfy the following conditions: 0.08 < |10 × T12 / f4| < 1.50. Thereby, the distance between the first lens and the second lens and the refractive power of the fourth lens can be coordinated with each other, which helps to correspond to the imaging modes of different specifications of the imaging optical lens. Furthermore, it can satisfy the following conditions: 0.08 < |10 × T12 / f4| < 1.00. Furthermore, it can satisfy the following conditions: 0.15 ≤ |10 × T12 / f4| ≤ 0.30.

[0156] In a single mode of the imaging optical lens, the distance on the optical axis from the lens surface closest to the object side of the object-side lens group to the lens surface closest to the image side of the object-side lens group is DGA, which satisfies the following condition: DGA < 4.50 mm. Thereby, the length of the object-side end of the imaging optical lens can be effectively compressed to accommodate a wider range of applications. Furthermore, it can satisfy the following condition: 1.00 mm < DGA < 3.80 mm.

[0157] In all modes and all states of the imaging optical lens, the maximum value of the distance on the optical axis from the lens surface closest to the object side to the imaging surface is TLmax, which satisfies the following condition: TLmax < 80 mm. Thereby, the total length can be controlled to increase the module space of the electronic device. Furthermore, it can satisfy the following conditions: 15 mm < TLmax < 60 mm. Furthermore, it can satisfy the following conditions: 20 mm < TLmax < 50 mm. Furthermore, it can satisfy the following conditions: 25 mm < TLmax < 45 mm.

[0158] Among the central thicknesses of all the lenses of the imaging optical lens, the maximum central thickness value of the lens is CTmax, which satisfies the following condition: CTmax < 3.0 mm. Thereby, it helps to reduce the space required by the lens group and effectively improves the space utilization rate. Furthermore, it can satisfy the following condition: 1.0 mm < CTmax < 2.5 mm.

[0159] In all modes and all states of the imaging optical lens, the minimum value of the optical effective radius of the lens surface closest to the object side is YGAR1min, which satisfies the following condition: 3.80 mm < YGAR1min. Thereby, the light incident area can be adjusted according to the specifications of different modes to ensure sufficient brightness for imaging. Furthermore, it can satisfy the following conditions: 4.00 mm < YGAR1min < 6.00 mm.

[0160] The central thickness of the first lens is CT1, and the central thickness of the sixth lens is CT6, which satisfies the following condition: 0.35 < CT1 / CT6 < 2.20. Thereby, the central thickness of the first lens and the central thickness of the sixth lens can be balanced, which helps to reduce sensitivity and manufacturing tolerances. Furthermore, it can satisfy the following conditions: 0.60 < CT1 / CT6 < 1.80. Furthermore, it can satisfy the following conditions: 0.86 ≤ CT1 / CT6 ≤ 1.46.

[0161] In a single mode of the imaging optical lens, the distance on the optical axis from the lens surface of the object-side lens group closest to the object side to the lens surface of the object-side lens group closest to the image side is DGA. In the first mode and the second mode, the central thickness of the first lens is CT1, which satisfies the following condition: 0.90 < DGA / CT1 < 3.00. Thereby, the ratio between the distance of the object-side lens group on the optical axis and the central thickness of the first lens can be controlled, which helps to compress the volume of the object-side end of the imaging optical lens and takes into account the process limitations of the first lens. Furthermore, it can satisfy the following condition: 1.00 < DGA / CT1 < 2.50.

[0162] The refractive index of the fifth lens at the d-line is N5, which satisfies the following condition: 1.20 ≤ N5 ≤ 1.65. Thereby, the refractive index of the material of the fifth lens can be adjusted to help balance the situation of light rays in different fields of view passing through the fifth lens at different wavelengths, different modes and different shooting states. Furthermore, it can satisfy the following condition: 1.30 ≤ N5 ≤ 1.64. Furthermore, it can satisfy the following condition: 1.40 ≤ N5 ≤ 1.62.

[0163] The refractive index of the first lens at the d-line is N1, the refractive index of the fifth lens at the d-line is N5, the Abbe number of the first lens is V1, and the Abbe number of the fifth lens is V5, which satisfies the following condition: 0.20 < 10×(N1 / V1 + N5 / V5) < 1.35. Thereby, the material configuration of the first lens and the fifth lens can be adjusted, which helps to correct chromatic aberration in various modes and when shooting at multiple object distances, thereby improving the imaging quality. Furthermore, it can satisfy the following condition: 0.35 < 10×(N1 / V1 + N5 / V5) < 1.25. Furthermore, it can satisfy the following condition: 0.50 < 10×(N1 / V1 + N5 / V5) < 1.20. Furthermore, it can satisfy the following condition: 0.50 < 10×(N1 / V1 + N5 / V5) < 1.40.

[0164] The focal length of the first lens is f1, the focal length of the third lens is f3, and the focal length of the fourth lens is f4, which satisfies the following condition: 0.60 < |f1 / f3| + |f1 / f4| < 3.00. Thereby, the refractive power of the third lens and the fourth lens can be assisted in adjustment by the first lens, which helps to coordinate with the overall design in different modes and different shooting states to balance the light path direction. Furthermore, it can satisfy the following condition: 0.90 < |f1 / f3| + |f1 / f4| < 2.80. Furthermore, it can satisfy the following condition: 1.20 < |f1 / f3| + |f1 / f4| < 2.7,

[0165] At least two of the lenses in the imaging optical lens are made of plastic. This improves the yield rate and manufacturing speed of the aspheric design, and helps reduce weight and production costs. Furthermore, at least three of the lenses can be made of plastic. Furthermore, at least four of the lenses can be made of plastic.

[0166] There are no other lenses between the shared lens group and the imaging plane, or there are no other lenses between the last lens group and the imaging plane, thereby helping to reduce the overall size and complexity of the imaging device and the space required for the imaging optical lens.

[0167] Finally, a second optical path deflection element is provided between the lens group and the imaging surface, thereby providing different optical path directions for the imaging optical system, improving space utilization, and contributing to the miniaturization of the imaging optical lens.

[0168] The lens closest to the object side of the imaging optical lens is a positive lens, which helps to compress the volume, control the shooting angle and increase the amount of light entering.

[0169] The lens closest to the object side of the shared lens group is a positive lens, which helps to receive light passing through the object side lens group in various modes and reduce the volume of the entire imaging optical system.

[0170] The first mode and the second mode share the same electronic photosensitive element (sensor), thereby enhancing the functionality of the shared element between different modes.

[0171] The lens closest to the imaging surface of the imaging optical lens is a negative lens. This helps to balance the incident angle of light on the imaging surface during the mobile focusing process and control the back focus length.

[0172] The first light path turning element and the second light path turning element are both prisms, thereby using prisms helps to reduce the difficulty of assembly.

[0173] Adjacent lenses in the imaging optical lens have air spacing along the optical axis. This helps increase the freedom of optical design and allows for aberration correction through more control parameters, improving focusing quality.

[0174] The imaging optical lens consists only of an object-side lens group and a common lens group. This simplifies the design complexity, facilitates assembly of the imaging optical lens, and improves manufacturing yield.

[0175] The middle lens group consists of a positive lens, a negative lens, and another positive lens in sequence. This helps balance the refractive power of the shared lens group, balancing image quality during movement and reducing sensitivity during focus movement.

[0176] The final lens group includes a negative lens and another lens in sequence. This provides a sufficient number of lenses and an appropriate lens configuration, allowing the imaging optical system to maintain an appropriate back focal length while correcting off-axis aberrations.

[0177] The maximum field of view (FOV) of the first mode and the second mode differ by at least 2.0 times or more. This allows the viewing angle and incident light volume of the imaging optical system to be adjusted for different application conditions, helping to provide a variety of depths of field to achieve different image presentation effects.

[0178] It must be noted that in the present disclosure, the imaging optical lens may include at least one optical path turning element, which may be a reflective element, such as a prism or a reflector, which can make the spatial configuration more flexible. The optical path turning element can be set between the object and the imaging surface, which is beneficial to compressing the volume of the imaging optical lens. The light path can be reflected at least once through the optical path turning element, and the angle between the reflecting surface (normal) and the optical axis is not limited to 45 degrees, and can have other angles according to the requirements of spatial configuration. The angle between the optical axis vector near the object end and the optical axis vector near the image end can be any angle, and is not limited to 0 degrees, 90 degrees or 180 degrees. In addition, in order to reduce the occupied volume, the length and width of the reflector can be unequal, the length, width and height of the prism can be unequal, and the surface shape of the optical path turning element can be based on the requirements of optical design, and can be a plane, a spherical surface, an aspherical surface or a free-form surface, but is not limited thereto. The optical path turning element can be composed of more than one prism according to design requirements. The prism can be made of materials such as glass or plastic depending on design requirements. When the optical deflection element is a single prism, it can reflect light once, twice, or three times or more, and can also have a refractive power. The optical deflection element can be movable or rotatable to switch modes of the imaging optical lens, but this is not a limitation. The imaging optical lens can optionally be equipped with three or more optical deflection elements. This disclosure is not limited to the type, number, and location of the optical deflection elements shown in the accompanying drawings.

[0179] Please refer to Figure 14A , which is a schematic diagram of the switching between the first mode and the second mode of the imaging optical system in the imaging device of the present disclosure. Figure 14AAs shown, when the imaging optical lens is in the first mode (Mode1), the imaging optical lens can be arranged along the optical path from the subject (not shown) to the imaging surface IMG, and has an opening H1, a first mode object side lens group GA1, a first optical path turning element P1, a common lens group GB and a second optical path turning element P2 in sequence. Light can be directed from the subject along the first optical axis OA1, the second optical axis OA2 and the third optical axis OA3 to the imaging surface IMG. When the imaging optical lens is in the second mode (Mode2), the imaging optical lens can be arranged along the optical path from the subject (not shown) to the imaging surface IMG, and has an opening H2, a second mode object side lens group GA2, a first optical path turning element P1, a common lens group GB and a second optical path turning element P2 in sequence. Light can be directed from the subject along the fourth optical axis OA4, the second optical axis OA2 and the third optical axis OA3 to the imaging surface IMG. Figure 14A In the imaging optical system shown, the imaging optical lens is switched between the first mode and the second mode by moving the first optical path turning element P1 along the second optical axis OA2.

[0180] Please refer to Figure 14B , which is another switching diagram of the first mode and the second mode of the imaging optical system in the imaging device of the present disclosure. Figure 14B As shown, when the imaging optical lens is in the first mode (Mode1), the imaging optical lens can be arranged along the optical path from the subject (not shown) to the imaging surface IMG, and has an opening H1, a first mode object side lens group GA1, a first optical path turning element P1, a common lens group GB and a second optical path turning element P2 in sequence. Light can be directed from the subject along the first optical axis OA1, the second optical axis OA2 and the third optical axis OA3 to the imaging surface IMG. When the imaging optical lens is in the second mode (Mode2), the imaging optical lens can be arranged along the optical path from the subject (not shown) to the imaging surface IMG, and has an opening H2, a second mode object side lens group GA2, a first optical path turning element P1, a common lens group GB and a second optical path turning element P2 in sequence. Light can be directed from the subject along the fourth optical axis OA4, the second optical axis OA2 and the third optical axis OA3 to the imaging surface IMG. Figure 14B In the imaging optical system shown, the imaging optical lens is switched between the first mode and the second mode by rotating the first optical path turning element P1.

[0181] Please refer to Figure 14C , which is another switching diagram of the first mode and the second mode of the imaging optical system in the imaging device of the present disclosure. Figure 14CAs shown, the imaging optical lens can follow the optical path from the object (not shown) to the imaging surface IMG, and has an opening H1, an object side lens group GA and a common lens group GB in sequence. Light can reach the imaging surface IMG from the object along the direction of the first optical axis OA1. Figure 14C In the illustrated imaging optical system, the object-side lens group GA may include a first-mode object-side lens group GA1, a second-mode object-side lens group GA2, a third-mode object-side lens group GA3, and object-side lens groups of other modes (not shown). Any of the first-mode object-side lens group GA1, the second-mode object-side lens group GA2, the third-mode object-side lens group GA3, and object-side lens groups of other modes may move along an object-side lens group movement direction (GA Move) to reach the first optical axis OA1, thereby switching the imaging optical lens between different modes.

[0182] Please refer to Figure 14D , which is another switching diagram of the first mode and the second mode of the imaging optical system in the imaging device of the present disclosure. Figure 14D As shown, when the imaging optical lens is in the first mode (Mode1), the imaging optical lens can be taken from the object (not shown) to the imaging surface IMG along the optical path, and has an opening H1, a first mode object side lens group GA1 and a common lens group GB in sequence, and light can be taken from the object to the imaging surface IMG along the direction of the first optical axis OA1. When the imaging optical lens is in the second mode (Mode2), the imaging optical lens can be taken from the object (not shown) to the imaging surface IMG along the optical path, and has an opening H2, a second mode object side lens group GA2 and a common lens group GB in sequence, and light can be taken from the object to the imaging surface IMG along the direction of the second optical axis OA2. Figure 14D In the imaging optical system shown, the common lens group GB moves along a common lens group moving direction (GB Move) to reach the first optical axis OA1 or the second optical axis OA2 , so that the imaging optical lens switches between the first mode and the second mode.

[0183] In the present disclosure, the imaging optical lens may also have three or more modes.

[0184] In this disclosure, the object distance refers to the distance on the optical axis from the object to the object-side surface of the imaging optical lens closest to the object side lens. When the object distance is greater than 10,000 mm, it is considered to be an infinite object distance shooting state.

[0185] In the imaging optical system provided herein, a critical point is defined as a point on the lens surface that intersects a plane perpendicular to the optical axis, excluding the point of intersection with the optical axis. An inflection point is defined as a point where the curvature of the lens surface changes from positive to negative. In this disclosure, inflection points and critical points are calculated only within the region of each lens' maximum effective optical diameter.

[0186] In the present disclosure, some components can be driven by a driving device to instantly compensate for image tilt and achieve an optical image stabilization (OIS) function.

[0187] In the present disclosure, at least one element may have a non-circular optically effective area.

[0188] Please refer to Figure 15A as well as Figure 15B ,in Figure 15A This is a schematic diagram of a non-circular aperture of the imaging optical system in the imaging device of the present disclosure. Figure 15B This is a schematic diagram of another non-circular aperture of the imaging optical system in the imaging device disclosed herein. Figure 15A As shown, the shape of the aperture can be an ellipse, which has a major axis X and a minor axis Y. The aperture has a major axis effective radius Ra on the major axis X and a minor axis effective radius Rb on the minor axis Y, and the major axis effective radius Ra and the minor axis effective radius Rb are not equal. Figure 15B As shown, the shape of the aperture can be roughly elliptical, having a major axis X and a minor axis Y, and having cut edges on both sides of the minor axis Y. The aperture has a major axis effective radius Ra on the major axis X and a minor axis effective radius Rb on the minor axis Y, and the major axis effective radius Ra is not equal to the minor axis effective radius Rb.

[0189] Please refer to Figure 16A and Figure 16B ,in Figure 16A This is a schematic diagram of a non-circular lens in the imaging optical system of the imaging device of the present disclosure. Figure 16B This is a schematic diagram of another non-circular lens in the imaging optical system of the imaging device disclosed herein. Figure 16A As shown, the shape of the lens can be substantially elliptical, having a major axis X and a minor axis Y, and having cut edges on both sides of the minor axis Y. Figure 16B As shown, the shape of the lens may be an octagon having a major axis X and a minor axis Y, and two pairs of opposite sides of the octagon fall on the major axis X and the minor axis Y respectively.

[0190] In the present disclosure, the movable elements in the imaging optical lens (lens group, electronic photosensitive element and optical path turning element, but not limited to this) can be driven by a driving device to have tilt or movement perpendicular to the optical axis, but are not limited to the disclosed driving method.

[0191] The present disclosure provides an imaging device comprising an imaging optical system and an electronic photosensitive element as described above, wherein the electronic photosensitive element is disposed on the imaging surface of the imaging optical system. By designing a shared portion of the lens group in the imaging optical system and combining it with a reflective element, a variety of combinations within the lens group are provided, further increasing the freedom of use of the module space, so that the telephoto lens can be configured in various application devices to exhibit the effects of multiple lenses or even different types of lenses, and by moving and combining within the lens group, the possibility of reducing the number of lenses can be achieved. Furthermore, by designing the shared portion of the lens group in groups, the utilization rate of the single lens is further increased, enabling the imaging optical lens to adjust the focal length in shooting modes of different specifications, while taking into account high imaging quality in both long-range and close-range shooting, which helps to increase the freedom of shooting of the imaging optical lens. Preferably, the imaging device may further include a lens barrel, a support device, or a combination thereof.

[0192] In the present disclosure, the imaging device can be applied to a telescopic imaging device with an optical path deflection element. Its driving device group can have functions such as zoom or auto-focus, and its driving method can use a driving system such as a screw, a voice coil motor (VCM), a spring type, or a ball type.

[0193] The present disclosure provides an electronic device comprising the aforementioned imaging device, thereby improving imaging quality. Preferably, the aforementioned electronic device may further comprise a control unit, a display unit, a storage unit, a random access memory, or a combination thereof.

[0194] The various technical features of the imaging optical system disclosed above can be configured in combination to achieve corresponding effects.

[0195] The imaging optical system provided by the present disclosure can be made of glass or plastic. If the lens is made of glass, the freedom of configuration of the refractive power of the imaging optical system can be increased, and the glass lens can be made using techniques such as grinding or molding. If the lens is made of plastic, the production cost can be effectively reduced. In addition, a spherical surface or an aspherical surface (ASP) can be set on the mirror surface, wherein the spherical lens can reduce the difficulty of manufacturing, and if the aspherical surface is set on the mirror surface, more control variables can be obtained to eliminate aberrations, reduce the number of lenses, and effectively reduce the total length of the imaging optical system of the present disclosure, and the aspherical surface can be made by methods such as plastic injection molding or molded glass lenses.

[0196] In the imaging optical system provided by the present disclosure, additives can be selectively added to any (or more) lens materials to produce light absorption or light interference effects, thereby changing the transmittance of the lens for light in a specific wavelength band, thereby reducing stray light and color deviation. For example, the additive can have the function of filtering out light in the 600nm to 800nm ​​wavelength band in the system to reduce excess red light or infrared light; or it can filter out light in the 350nm to 450nm wavelength band to reduce blue light or ultraviolet light in the system. Therefore, the additive can prevent light in a specific wavelength band from interfering with imaging. In addition, the additive can be evenly mixed in plastic and made into a lens using injection molding technology. In addition, the additive can also be configured as a coating on the surface of the lens to provide the above-mentioned effects.

[0197] In the imaging optical system provided by the present disclosure, if the lens surface is aspherical, it means that the entire optically effective area of ​​the lens surface or a portion thereof is aspherical.

[0198] In the imaging optical system provided by the present disclosure, if the lens surface is convex and the position of the convex surface is undefined, it means that the lens surface may be convex at the near optical axis; if the lens surface is concave and the position of the concave surface is undefined, it means that the lens surface may be concave at the near optical axis. In the imaging optical system provided by the present disclosure, if the lens has positive or negative refractive power, or the focal length of the lens, it refers to the refractive power or focal length of the lens at the near optical axis.

[0199] The imaging surface of the imaging optical system provided by the present disclosure can be a flat surface or a curved surface with any curvature, depending on the corresponding electronic photosensitive element, particularly a curved surface with a concave surface facing the object side. Furthermore, the imaging optical system of the present disclosure can optionally include one or more imaging correction elements (such as flattening elements) between the lens closest to the imaging surface in the imaging light path and the imaging surface to achieve an image correction effect (such as image curvature). The optical properties of the imaging correction element, such as curvature, thickness, refractive index, position, and surface shape (convex or concave, spherical or aspherical, diffractive surface, Fresnel surface, etc.), can be adjusted to meet the requirements of the imaging device. Generally speaking, a preferred imaging correction element configuration is to place a thin plano-concave element with a concave surface facing the object side near the imaging surface.

[0200] In addition, in the imaging optical system provided by the present disclosure, at least one aperture stop, such as an aperture stop, a glare stop, or a field stop, can be provided as needed to help reduce stray light and improve image quality.

[0201] In the imaging optical system provided by this disclosure, the aperture configuration can be either a front aperture or a center aperture. A front aperture means the aperture is positioned between the subject and the first lens, while a center aperture means the aperture is positioned between the first lens and the imaging plane. A front aperture creates a longer distance between the exit pupil and the imaging plane of the imaging optical system, creating a telecentric effect and increasing the efficiency of the image reception by the CCD or CMOS electronic sensor. A center aperture helps expand the field of view of the imaging optical system, giving it the advantages of a wide-angle lens.

[0202] The present disclosure may appropriately provide a variable aperture element, which may be a mechanical component or a light control element that can control the size and shape of the aperture electrically or with electrical signals. The mechanical component may include movable parts such as a blade assembly and a shielding plate; the light control element may include a filter element, an electrochromic material, a liquid crystal layer and other shielding materials. The variable aperture element can enhance the image adjustment capability by controlling the amount of light entering the image or the exposure time. In addition, the variable aperture element may also be the aperture of the present disclosure, which can adjust the image quality, such as the depth of field or the exposure speed, by changing the aperture value.

[0203] The present disclosure may employ one or more optical elements to restrict the pattern of light passing through the imaging optical system. These optical elements may be, but are not limited to, filters, polarizers, and other optical elements. Furthermore, these optical elements may be monolithic, composite, or thin-film. These optical elements may be positioned at the object end, image end, or between lenses of the imaging optical system to control the transmission of specific light patterns, thereby meeting application requirements.

[0204] The imaging optical system disclosed in the present disclosure may include at least one optical lens, optical element, or carrier, at least one surface of which has a low-reflection layer, and the low-reflection layer can effectively reduce stray light generated by light reflection at the interface. The low-reflection layer can be disposed on an inactive area of ​​the object-side or image-side surface of the optical lens, or on a connecting surface between the object-side surface and the image-side surface; the optical element can be a light-shielding element, an annular spacer element, a lens barrel element, flat glass (cover glass), blue glass, a filter element (filter, color filter), an optical path turning element, a prism, or a mirror; the carrier can be a lens assembly mount, a micro lens disposed on a photosensitive element, the periphery of a photosensitive element substrate, or a glass sheet used to protect the photosensitive element.

[0205] The imaging optical system provided by the present disclosure can also be widely applied in electronic devices such as three-dimensional (3D) image capture, digital cameras, mobile products, digital tablets, smart TVs, network monitoring equipment, somatosensory game consoles, driving recorders, reversing imaging devices, wearable products, and drones.

[0206] Specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0207] <First Embodiment - First Mode>

[0208] Please refer to Figure 1A as well as Figure 2A ,in Figure 1A FIG2 is a schematic diagram illustrating a first state of an imaging device 1 in a first mode according to a first embodiment of the present disclosure. Figure 2A From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 1 of the first embodiment in the first state of the first mode. Figure 1A As can be seen, the imaging device 1 of the first embodiment includes an imaging optical lens (not separately labeled) and an electronic photosensitive element IS. In a first mode, the imaging optical lens comprises, from the object side to the image side of the optical path, an aperture S1, a first-mode object-side lens group GA1, a first optical path deflection element P1, a common lens group GB, a second optical path deflection element P2, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging optical lens, and no other lenses are located between the common lens group GB and the imaging surface IMG.

[0209] The first mode object side lens group GA1 includes lens A11, which has positive refractive power and is made of plastic. Its object side surface near the optical axis is convex, and its image side surface near the optical axis is concave, and both are aspherical. Figure 13A , which is drawn according to Figure 1A Schematic diagram of the inflection point IP and critical point CP of the first state of the first mode of the imaging device 1 in the first embodiment. The object side surface of the lens A11 includes an inflection point IP (marked at Figure 13A ), the image side surface of lens A11 includes an inflection point IP (marked at Figure 13A ) and a critical point CP (marked at Figure 13A ).

[0210] The first light path turning element P1 and the second light path turning element P2 are both prisms, and are both made of glass.

[0211] The shared lens group GB comprises, from the object side to the image side of the optical path, an aperture S2, a first lens E1, a second lens E2, an aperture S3, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An air gap is provided between any two adjacent lenses of these six lenses (E1, E2, E3, E4, E5, E6) on the optical axis, and there are no intervening lenses between these six lenses. The shared lens group GB comprises, in order, an intermediate lens group Gm and a final lens group Gn. The first lens E1, the second lens E2, the third lens E3, and the fourth lens E4 belong to the intermediate lens group Gm, and the fifth lens E5 and the sixth lens E6 belong to the final lens group Gn.

[0212] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both are aspherical. In addition, the object-side surface of the first lens E1 includes an inflection point IP (marked at Figure 13A ), the image-side surface of the first lens E1 includes an inflection point IP (marked at Figure 13A ).

[0213] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both are aspherical. In addition, the object-side surface of the second lens E2 includes an inflection point IP (marked at Figure 13A ) and a critical point CP (marked at Figure 13A ), the image-side surface of the second lens E2 includes an inflection point IP (marked at Figure 13A ).

[0214] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both are aspherical. In addition, the object-side surface of the third lens E3 includes an inflection point IP (marked at Figure 13A ) and a critical point CP (marked at Figure 13A ).

[0215] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both are aspherical. In addition, the object-side surface of the fourth lens E4 includes two inflection points IP (marked on Figure 13A ), the image-side surface of the fourth lens E4 includes an inflection point IP (marked at Figure 13A ).

[0216] The fifth lens E5 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both are aspherical. In addition, the object-side surface of the fifth lens E5 includes an inflection point IP (marked at Figure 13A ) and a critical point CP (marked at Figure 13A ), the image-side surface of the fifth lens E5 includes an inflection point IP (marked at Figure 13A ) and a critical point CP (marked at Figure 13A ).

[0217] The sixth lens E6 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both are aspherical. In addition, the object-side surface of the sixth lens E6 includes an inflection point IP (marked at Figure 13A ) and a critical point CP (marked at Figure 13A ), the image-side surface of the sixth lens E6 includes an inflection point IP (marked at Figure 13A ) and a critical point CP (marked at Figure 13A ).

[0218] The filter element E7 is made of glass and is disposed between the second optical path turning element P2 and the imaging surface IMG without affecting the focal length of the imaging optical lens.

[0219] The curve equations of the aspheric surfaces of the above lenses are expressed as follows:

[0220]

[0221] ;in:

[0222] X: The displacement parallel to the optical axis from the intersection of the aspheric surface and the optical axis to the point on the aspheric surface that is Y away from the optical axis;

[0223] Y: The vertical distance between the point on the aspheric curve and the optical axis;

[0224] R: radius of curvature;

[0225] k: cone coefficient; and

[0226] Ai: i-th order aspheric coefficient.

[0227] In the imaging optical lens of the first embodiment, the first mode may include a first state, a second state, and a third state. The optical properties of each state are described below one by one.

[0228] In the imaging optical lens of the first embodiment, in the first state of the first mode, the focal length of the imaging optical lens is fM1-1, the aperture value (f-number) of the imaging optical lens is FnoM1-1, half of the maximum field of view angle in the imaging optical lens is HFOVM1-1, and the maximum field of view angle in the imaging optical lens is FOVM1-1, and its values ​​are as follows: fM1-1 = 18.61 mm; FnoM1-1 = 1.93; HFOVM1-1 = 15.3 degrees; and FOVM1-1 = 30.6 degrees.

[0229] In the imaging optical lens of the first embodiment, in the first state of the first mode, the object distance of the imaging optical lens is infinite.

[0230] In the imaging optical lens of the first embodiment, in the first state of the first mode, the distance between the object and the aperture S1 on the optical axis is D0, the distance between the first optical path deflection element P1 and the aperture S2 on the optical axis is D1, and the distance between the fourth lens element E4 and the fifth lens element E5 on the optical axis is D2. These conditions satisfy: D0 = ∞; D1 = 4.258 mm; and D2 = 0.250 mm. It should be noted that in other embodiments, the actual meanings of D0, D1, and D2 are described in the following table.

[0231] Please refer to Figure 13C , which is drawn according to Figure 1A Schematic diagram of parameters of the first state of the first mode of the imaging device 1 according to the first embodiment. In the imaging optical lens of the first embodiment, in the first state of the first mode, the distance on the optical axis from the lens surface closest to the object side of the first-mode object-side lens group GA1 to the lens surface closest to the image side of the first-mode object-side lens group GA1 is DGA (i.e., DGA1), which satisfies the following condition: DGA = 1.70 mm.

[0232] In the imaging optical lens of the first embodiment, in the first state of the first mode, the distance on the optical axis from the lens surface closest to the object side of the first-mode object-side lens group GA1 to the lens surface closest to the image side of the first-mode object-side lens group GA1 is DGA, and the center thickness of the first lens E1 is CT1, which satisfies the following condition: DGA / CT1=1.26.

[0233] In the imaging optical lens of the first embodiment, in the first state of the first mode, the distance on the optical axis between the lens surface of the first-mode object-side lens group GA1 closest to the image side and the lens surface of the common lens group GB closest to the object side is TGAB. In the common lens group GB, the distance on the optical axis between the lens surface closest to the object side and the lens surface closest to the image side is DGB, which satisfies the following condition: TGAB / DGB=1.68.

[0234] In the imaging optical lens of the first embodiment, in the first state of the first mode, when the object distance is set to the shooting state of infinity, the overall focal length of the imaging optical lens is divided by the focal lengths of the three lenses closest to the imaging surface IMG, and the sum of the three values ​​is ΣPGn, which satisfies the following condition: ΣPGn=-3.47.

[0235] Please refer to Figure 1B as well as Figure 2B ,in Figure 1B Drawing in accordance with Figure 1AA schematic diagram of the imaging device 1 of the first embodiment in the second state of the first mode, Figure 2B From left to right, the spherical aberration, astigmatism, and distortion curves of the imaging device 1 of the first embodiment in the second state of the first mode are shown. In the imaging optical lens of the first embodiment, in the second state of the first mode, the focal length of the imaging optical lens is fM1-2, the aperture value of the imaging optical lens is FnoM1-2, half of the maximum field of view of the imaging optical lens is HFOVM1-2, and the maximum field of view of the imaging optical lens is FOVM1-2, with the following values: fM1-2 = 18.01 mm; FnoM1-2 = 1.97; HFOVM1-2 = 15.1 degrees; and FOVM1-2 = 30.2 degrees.

[0236] In the imaging optical lens of the first embodiment, in the second state of the first mode, the object distance of the imaging optical lens is 800.000 mm.

[0237] In the imaging optical lens of the first embodiment, in the second state of the first mode, the distance between the object and the aperture S1 on the optical axis is D0, the distance between the first optical path deflection element P1 and the aperture S2 on the optical axis is D1, and the distance between the fourth lens element E4 and the fifth lens element E5 on the optical axis is D2, which satisfies the following conditions: D0 = 800.000 mm; D1 = 4.079 mm; and D2 = 0.429 mm.

[0238] In the imaging optical lens of the first embodiment, in the second state of the first mode, the distance on the optical axis from the lens surface of the first-mode object-side lens group GA1 closest to the object side to the lens surface of the first-mode object-side lens group GA1 closest to the image side is DGA (i.e., DGA1), which satisfies the following condition: DGA=1.70mm.

[0239] In the imaging optical lens of the first embodiment, in the second state of the first mode, the distance on the optical axis from the lens surface closest to the object side of the first-mode object-side lens group GA1 to the lens surface closest to the image side of the first-mode object-side lens group GA1 is DGA, and the center thickness of the first lens E1 is CT1, which satisfies the following condition: DGA / CT1=1.26.

[0240] In the imaging optical lens of the first embodiment, in the second state of the first mode, the distance on the optical axis between the lens surface of the first-mode object-side lens group GA1 closest to the image side and the lens surface of the common lens group GB closest to the object side is TGAB. In the common lens group GB, the distance on the optical axis between the lens surface closest to the object side and the lens surface closest to the image side is DGB, which satisfies the following condition: TGAB / DGB=1.61.

[0241] Please refer to Figure 1C as well as Figure 2C ,in Figure 1C Drawing in accordance with Figure 1A A schematic diagram of the imaging device 1 of the first embodiment in the third state of the first mode, Figure 2C From left to right, the spherical aberration, astigmatism, and distortion curves of the imaging device 1 of the first embodiment in the third state of the first mode are shown. In the imaging optical lens of the first embodiment, in the third state of the first mode, the focal length of the imaging optical lens is fM1-3, the aperture value of the imaging optical lens is FnoM1-3, half of the maximum field of view of the imaging optical lens is HFOVM1-3, and the maximum field of view of the imaging optical lens is FOVM1-3, with the following values: fM1-3 = 16.43 mm; FnoM1-3 = 2.14; HFOVM1-3 = 14.5 degrees; and FOVM1-3 = 29.0 degrees.

[0242] In the imaging optical lens of the first embodiment, in the third state of the first mode, the object distance of the imaging optical lens is 200.000 mm.

[0243] In the imaging optical lens of the first embodiment, in the third state of the first mode, the distance between the object and the aperture S1 on the optical axis is D0, the distance between the first optical path deflection element P1 and the aperture S2 on the optical axis is D1, and the distance between the fourth lens element E4 and the fifth lens element E5 on the optical axis is D2, which satisfies the following conditions: D0 = 200.000 mm; D1 = 3.560 mm; and D2 = 0.948 mm.

[0244] In the imaging optical lens of the first embodiment, in the third state of the first mode, the distance on the optical axis from the lens surface closest to the object side of the first mode object-side lens group GA1 to the lens surface closest to the image side of the first mode object-side lens group GA1 is DGA (i.e., DGA1), which satisfies the following condition: DGA=1.70mm.

[0245] In the imaging optical lens of the first embodiment, in the third state of the first mode, the distance on the optical axis from the lens surface closest to the object side of the first-mode object-side lens group GA1 to the lens surface closest to the image side of the first-mode object-side lens group GA1 is DGA, and the center thickness of the first lens E1 is CT1, which satisfies the following condition: DGA / CT1=1.26.

[0246] In the imaging optical lens of the first embodiment, in the third state of the first mode, the distance on the optical axis between the lens surface closest to the image side of the object-side lens group GA1 of the first mode and the lens surface closest to the object side of the common lens group GB is TGAB. In the common lens group GB, the distance on the optical axis from the lens surface closest to the object side to the lens surface closest to the image side is DGB, which satisfies the following condition: TGAB / DGB=1.44.

[0247] Please refer to Table 1A and Table 1B below.

[0248]

[0249]

[0250]

[0251] Table 1A is Figure 1A Detailed structural data for the first embodiment in the first mode is provided, with the units of curvature radius, thickness, and focal length being mm. Surfaces 0-24 represent surfaces from the object side to the image side, respectively, and the refractive index is the refractive index measured at a reference wavelength. Table 1B shows the aspheric surface data for the first embodiment in the first mode, where k represents the conic coefficient in the aspheric curve equation, and A4-A28 represent the 4th-28th order aspheric coefficients for each surface. Furthermore, the tables below provide schematic diagrams and aberration curves corresponding to each embodiment in different modes. The definitions of the data in the tables are the same as those in Tables 1A and 1B of the first embodiment and are not further elaborated here.

[0252] It should be noted that the aperture position is not disclosed in Table 1A because it can be adjusted depending on the object distance. In other words, the imaging optical lens can have different object distances between different states. In the first mode of the first embodiment, the aperture position in the first state is surface 6, the aperture position in the second state is surface 6, and the aperture position in the third state is surface 11.

[0253] <First Embodiment - Second Mode>

[0254] Please refer to Figure 1D as well as Figure 2D ,in Figure 1D FIG2 is a schematic diagram showing the first state of the imaging device 1 in the second mode according to the first embodiment of the present disclosure. Figure 2D From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 1 of the first embodiment in the first state of the second mode. Figure 1D As can be seen, the imaging device 1 of the first embodiment includes an imaging optical lens (not separately labeled) and an electronic photosensitive element IS. In the second mode, the imaging optical lens comprises, from the object side to the image side of the optical path, an aperture S1, a second-mode object-side lens group GA2, a first optical path deflection element P1, a common lens group GB, a second optical path deflection element P2, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging optical lens, and no other lenses are located between the common lens group GB and the imaging surface IMG.

[0255] The second object-side lens group GA2 includes lens A21 and lens A22 in order from the object side to the image side of the optical path. There is an air gap between lens A21 and lens A22 on the optical axis, and there is no other lens inserted between lens A21 and lens A22.

[0256] Lens A21 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, and both are aspherical. Figure 13B , which is drawn according to Figure 1D Schematic diagram of the inflection point IP and critical point CP of the first state of the second mode of the imaging device 1 in the first embodiment. The object side surface of the lens A21 includes an inflection point IP (marked at Figure 13B ) and a critical point CP (marked at Figure 13B ), the image side surface of lens A21 includes an inflection point IP (marked at Figure 13B ) and a critical point CP (marked at Figure 13B ).

[0257] Lens A22 has negative refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both are aspherical. In addition, the object-side surface of lens A22 includes an inflection point IP (marked at Figure 13B ) and a critical point CP (marked at Figure 13B ), the image side surface of lens A22 includes an inflection point IP (marked at Figure 13B ) and a critical point CP (marked at Figure 13B ).

[0258] The first light path turning element P1 and the second light path turning element P2 are both prisms, and are both made of glass.

[0259] The shared lens group GB comprises, from the object side to the image side of the optical path, an aperture S2, a first lens E1, a second lens E2, an aperture S3, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An air gap is provided between any two adjacent lenses of these six lenses (E1, E2, E3, E4, E5, E6) on the optical axis, and there are no intervening lenses between these six lenses. The shared lens group GB comprises, in order, an intermediate lens group Gm and a final lens group Gn. The first lens E1, the second lens E2, the third lens E3, and the fourth lens E4 belong to the intermediate lens group Gm, and the fifth lens E5 and the sixth lens E6 belong to the final lens group Gn.

[0260] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical.

[0261] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both are aspherical. In addition, the object-side surface of the second lens E2 includes an inflection point IP (marked at Figure 13B ), the image-side surface of the second lens E2 includes an inflection point IP (marked at Figure 13B ).

[0262] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both are aspherical. In addition, the object-side surface of the third lens E3 includes an inflection point IP (marked at Figure 13B ).

[0263] The fourth lens element E4 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both are aspherical. In addition, the image-side surface of the fourth lens element E4 includes an inflection point IP (marked at Figure 13B ).

[0264] The fifth lens E5 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both are aspherical. In addition, the object-side surface of the fifth lens E5 includes an inflection point IP (marked at Figure 13B ), the image-side surface of the fifth lens E5 includes an inflection point IP (marked at Figure 13B ) and a critical point CP (marked at Figure 13B ).

[0265] The sixth lens E6 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both are aspherical. In addition, the object-side surface of the sixth lens E6 includes an inflection point IP (marked at Figure 13B ) and a critical point CP (marked at Figure 13B ), the image-side surface of the sixth lens E6 includes an inflection point IP (marked at Figure 13B ).

[0266] The filter element E7 is made of glass and is disposed between the second optical path turning element P2 and the imaging surface IMG without affecting the focal length of the imaging optical lens.

[0267] Please refer to Table 2A and Table 2B below.

[0268]

[0269]

[0270]

[0271]

[0272] It should be noted that the aperture position is not disclosed in Table 2A because the aperture position can be adjusted according to the object distance. That is, the imaging optical lens can have different object distances between different states. In the second mode of the first embodiment, the aperture position in the first state is surface 8.

[0273] In the second mode of the first embodiment, the curve equation of the aspheric surface is expressed in the same manner as in the first mode of the first embodiment. Furthermore, the parameters labeled "M2-1" in the table below represent the parameters in the "first state of the second mode" (subsequently, the code M1-1 represents the first state of the first mode, M1-2 represents the second state of the first mode, and so on). "DGA2" is the DGA value of the object-side lens group GA2 in the second mode. The definitions of the remaining parameters are the same as those for the first mode of the first embodiment and are not further detailed here.

[0274] The following data in Table 2C can be derived by combining Table 2A and Table 2B:

[0275]

[0276]

[0277] Furthermore, with reference Figure 13C as well as Figure 13D ,in Figure 13D Drawing in accordance with Figure 1D Schematic diagram of parameters of the first state of the second mode of the imaging device 1 in the first embodiment. The imaging optical lens of the first embodiment can also meet the following conditions:

[0278] In the imaging optical lens of the first embodiment, when the object distance is set to the shooting state of infinity, when the imaging optical lens switches between the first mode and the second mode, the movement distance of the first optical path turning element P1 along the optical path relative to the last lens group Gn is TPM12, and the length along the optical axis inside the first optical path turning element P1 is CTP1, which satisfies the following condition: TPM12 / CTP1=1.44.

[0279] In the imaging optical lens of the first embodiment, the maximum image height of the imaging optical lens in the first mode is ImgH1, which can be half of the total diagonal length of the effective sensing area of ​​the electronic photosensitive element. The maximum image height of the imaging optical lens in the second mode is ImgH2, which can be half of the total diagonal length of the effective sensing area of ​​the electronic photosensitive element, which satisfies the following condition: ImgH1 / ImgH2=2.02.

[0280] In the imaging optical lens of the first embodiment, the focal length of the first lens E1 is f1, the focal length of the second lens E2 is f2, the focal length of the third lens E3 is f3, and the focal length of the fourth lens E4 is f4, which satisfy the following conditions: (|f1|+|f2|) / |f4|=1.76; f1 / f4=-0.85; and |f1 / f3|+|f1 / f4|=2.51.

[0281] In the imaging optical lens of the first embodiment, the refractive index of the first lens element E1 at the d-line is N1, the refractive index of the fifth lens element E5 at the d-line is N5, the Abbe number of the first lens element E1 is V1, and the Abbe number of the fifth lens element E5 is V5, which satisfy the following condition: 10×(N1 / V1+N5 / V5)=0.55.

[0282] In the imaging optical lens of the first embodiment, in all modes and all states, the maximum value of the distance between the lens surface closest to the object side and the imaging surface IMG on the optical axis is TLmax, which satisfies the following condition: TLmax=38.98 mm.

[0283] In the imaging optical lens of the first embodiment, among the center thicknesses of all lenses in the imaging optical lens, the maximum lens center thickness value is CTmax, which satisfies the following condition: CTmax=1.70 mm.

[0284] In the imaging optical lens of the first embodiment, in all modes and all states, the minimum optical effective radius of the lens surface closest to the object side is YGAR1min, which satisfies the following condition: YGAR1min=4.47 mm.

[0285] In the imaging optical lens of the first embodiment, the distance between the first lens element E1 and the second lens element E2 on the optical axis is T12. In this embodiment, the distance between two adjacent lenses on the optical axis refers to the distance between two adjacent mirror surfaces of the two adjacent lenses on the optical axis. The focal length of the fourth lens element E4 is f4, which satisfies the following condition: |10×T12 / f4|=0.30.

[0286] In the imaging optical lens of the first embodiment, the center thickness of the first lens E1 is CT1, and the center thickness of the sixth lens E6 is CT6, which satisfy the following condition: CT1 / CT6=1.46.

[0287] In the imaging optical lens of the first embodiment, the center thickness of the first lens E1 is CT1, the center thickness of the fifth lens E5 is CT5, and the distance between the first lens E1 and the second lens E2 on the optical axis is T12, which satisfies the following condition: (CT1+T12) / CT5=4.24.

[0288] In the imaging optical lens of the first embodiment, the refractive index N5 of the fifth lens element E5 at the d-line satisfies the following condition: N5=1.54.

[0289] <Second Embodiment - First Mode>

[0290] Please refer to Figure 3A as well as Figure 4A ,in Figure 3A FIG2 is a schematic diagram illustrating a first state of an imaging device 2 in a first mode according to a second embodiment of the present disclosure. Figure 4A From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 2 of the second embodiment in the first state of the first mode. Figure 3A As can be seen, the imaging device 2 of the second embodiment includes an imaging optical lens (not separately labeled) and an electronic photosensitive element IS. In a first mode, the imaging optical lens comprises, from the object side to the image side of the optical path, an aperture S1, a first-mode object-side lens group GA1, a first optical path deflection element P1, a common lens group GB, a second optical path deflection element P2, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging optical lens, and no other lenses are located between the common lens group GB and the imaging surface IMG.

[0291] The first object-side lens group GA1 includes lens A11, which has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of lens A11 includes an inflection point.

[0292] The first light path turning element P1 and the second light path turning element P2 are both prisms, and are both made of glass.

[0293] The shared lens group GB comprises, from the object side to the image side of the optical path, the first lens E1, the second lens E2, the third lens E3, the aperture S2, the fourth lens E4, the aperture S3, the fifth lens E5, and the sixth lens E6. An air gap is provided on the optical axis between any two adjacent lenses among these six lenses (E1, E2, E3, E4, E5, E6), and there are no other lenses interposed between these six lenses. The shared lens group GB comprises, in order, an intermediate lens group Gm and a final lens group Gn. The first lens E1, the second lens E2, and the third lens E3 belong to the intermediate lens group Gm, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 belong to the final lens group Gn.

[0294] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the first lens E1 includes an inflection point, and the image-side surface of the first lens E1 includes three inflection points and a critical point.

[0295] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical.

[0296] The third lens element E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0297] The fourth lens element, E4, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the fourth lens element, E4, includes an inflection point and a critical point, while the image-side surface of the fourth lens element, E4, also includes an inflection point and a critical point.

[0298] The fifth lens element, E5, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element, E5, has two inflection points and two critical points, while the image-side surface of the fifth lens element, E5, also has two inflection points and one critical point.

[0299] The sixth lens element, E6, has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the sixth lens element, E6, has two inflection points, and the image-side surface of the sixth lens element, E6, has one inflection point and a critical point.

[0300] The filter element E7 is made of glass and is disposed between the second optical path turning element P2 and the imaging surface IMG without affecting the focal length of the imaging optical lens.

[0301] Please refer to Table 3A and Table 3B below.

[0302]

[0303]

[0304]

[0305]

[0306] It should be noted that the aperture position is not disclosed in Table 3A because it can be adjusted depending on the object distance. In other words, the imaging optical lens can have different object distances between different states. In the first mode of the second embodiment, the aperture position in the first state is surface 1, the aperture position in the second state is surface 12, and the aperture position in the third state is surface 12.

[0307] In the first mode of the second embodiment, the curve equation of the aspheric surface is expressed in the same form as the first mode of the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first and second modes of the first embodiment and are not repeated here.

[0308] Coordinate Reference Figure 3B 、 Figure 3C 、 Figure 4B as well as Figure 4C ,in Figure 3B Drawing in accordance with Figure 3A A schematic diagram of the imaging device 2 of the second embodiment in the second state of the first mode, Figure 3C Drawing in accordance with Figure 3A A schematic diagram of the imaging device 2 of the second embodiment in the third state of the first mode, Figure 4B From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 2 of the second embodiment in the second state of the first mode. Figure 4C From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device 2 of the second embodiment in the third state of the first mode. The following data in Table 3C can be derived by combining Table 3A and Table 3B:

[0309]

[0310] <Second Embodiment - Second Mode>

[0311] Please refer to Figure 3D as well as Figure 4D ,in Figure 3D FIG2 is a schematic diagram showing the first state of the imaging device 2 in the second mode according to the second embodiment of the present disclosure. Figure 4D From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 2 of the second embodiment in the first state of the second mode. Figure 3D As can be seen, the imaging device 2 of the second embodiment includes an imaging optical lens (not separately labeled) and an electronic photosensitive element IS. In the second mode, the imaging optical lens comprises, from the object side to the image side of the optical path, an aperture S1, a second-mode object-side lens group GA2, a first optical path deflection element P1, a common lens group GB, a second optical path deflection element P2, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging optical lens, and no other lenses are located between the common lens group GB and the imaging surface IMG.

[0312] The second object-side lens group GA2 includes lens A21 and lens A22 in order from the object side to the image side of the optical path. There is an air gap between lens A21 and lens A22 on the optical axis, and there is no other lens inserted between lens A21 and lens A22.

[0313] Lens A21 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Furthermore, the image-side surface of lens A21 includes two inflection points and two critical points.

[0314] Lens A22 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of lens A22 includes an inflection point and a critical point, while the image-side surface of lens A22 also includes an inflection point and a critical point.

[0315] The first light path turning element P1 and the second light path turning element P2 are both prisms, and are both made of glass.

[0316] The shared lens group GB comprises, from the object side to the image side of the optical path, the first lens E1, the second lens E2, the third lens E3, the aperture S2, the fourth lens E4, the aperture S3, the fifth lens E5, and the sixth lens E6. An air gap is provided on the optical axis between any two adjacent lenses among these six lenses (E1, E2, E3, E4, E5, E6), and there are no other lenses interposed between these six lenses. The shared lens group GB comprises, in order, an intermediate lens group Gm and a final lens group Gn. The first lens E1, the second lens E2, and the third lens E3 belong to the intermediate lens group Gm, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 belong to the final lens group Gn.

[0317] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the first lens E1 includes an inflection point, and the image-side surface of the first lens E1 includes two inflection points and a critical point.

[0318] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical.

[0319] The third lens element E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0320] The fourth lens element, E4, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the fourth lens element, E4, includes an inflection point and a critical point, while the image-side surface of the fourth lens element, E4, also includes an inflection point and a critical point.

[0321] The fifth lens element, E5, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element, E5, has two inflection points and a critical point, while the image-side surface of the fifth lens element, E5, also has one inflection point and a critical point.

[0322] The sixth lens element, E6, has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the sixth lens element, E6, includes an inflection point, and the image-side surface of the sixth lens element, E6, also includes an inflection point.

[0323] The filter element E7 is made of glass and is disposed between the second optical path turning element P2 and the imaging surface IMG without affecting the focal length of the imaging optical lens.

[0324] Please refer to Table 4A and Table 4B below.

[0325]

[0326]

[0327]

[0328]

[0329] It should be noted that the aperture position is not disclosed in Table 4A because the aperture position can be adjusted according to the object distance. That is, the imaging optical lens can have different object distances between different states. In the second mode of the second embodiment, the aperture position in the first state is surface 1.

[0330] In the second mode of the second embodiment, the curve equation of the aspheric surface is expressed in the same form as the first mode of the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first and second modes of the first embodiment and are not repeated here.

[0331] The following data in Table 4C can be derived by combining Table 4A and Table 4B:

[0332]

[0333]

[0334] Furthermore, the imaging optical lens of the second embodiment can also satisfy the following conditions in Table 4D:

[0335]

[0336] <Third Embodiment - First Mode>

[0337] Please refer to Figure 5A as well as Figure 6A ,in Figure 5A FIG. 1 is a schematic diagram illustrating a first state of an imaging device 3 in a first mode according to a third embodiment of the present disclosure. Figure 6A From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 3 of the third embodiment in the first state of the first mode. Figure 5A As can be seen, the imaging device 3 of the third embodiment includes an imaging optical lens (not separately labeled) and an electronic photosensitive element IS. In a first mode, the imaging optical lens comprises, from the object side to the image side of the optical path, an aperture S1, a first-mode object-side lens group GA1, a first optical path deflection element P1, a common lens group GB, a second optical path deflection element P2, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging optical lens, with no other lenses between the common lens group GB and the imaging surface IMG.

[0338] The first object-side lens group GA1 includes lens A11, which has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of lens A11 includes an inflection point.

[0339] The first light path turning element P1 and the second light path turning element P2 are both prisms, and are both made of glass.

[0340] The shared lens group GB comprises, from the object side to the image side of the optical path, the first lens E1, the second lens E2, the third lens E3, the aperture S2, the fourth lens E4, the aperture S3, the fifth lens E5, and the sixth lens E6. An air gap is provided on the optical axis between any two adjacent lenses among these six lenses (E1, E2, E3, E4, E5, E6), and there are no other lenses interposed between these six lenses. The shared lens group GB comprises, in order, an intermediate lens group Gm and a final lens group Gn. The first lens E1, the second lens E2, and the third lens E3 belong to the intermediate lens group Gm, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 belong to the final lens group Gn.

[0341] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the first lens E1 includes an inflection point, and the image-side surface of the first lens E1 includes three inflection points and a critical point.

[0342] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical.

[0343] The third lens element E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0344] The fourth lens element, E4, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the fourth lens element, E4, includes an inflection point and a critical point, while the image-side surface of the fourth lens element, E4, also includes an inflection point and a critical point.

[0345] The fifth lens element, E5, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element, E5, has two inflection points and a critical point, while the image-side surface of the fifth lens element, E5, also has two inflection points and a critical point.

[0346] The sixth lens element, E6, has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the sixth lens element, E6, has two inflection points, and the image-side surface of the sixth lens element, E6, has one inflection point and a critical point.

[0347] The filter element E7 is made of glass and is disposed between the second optical path turning element P2 and the imaging surface IMG without affecting the focal length of the imaging optical lens.

[0348] Please refer to Table 5A and Table 5B below.

[0349]

[0350]

[0351]

[0352] It should be noted that the aperture position is not disclosed in Table 5A because it can be adjusted depending on the object distance. That is, the imaging optical lens can have different object distances between different states. In the first mode of the third embodiment, the aperture position in the first state is surface 1, the aperture position in the second state is surface 12, and the aperture position in the third state is surface 12.

[0353] In the first mode of the third embodiment, the curve equation of the aspheric surface is expressed in the same form as the first mode of the first embodiment. In addition, the definitions of the parameters in the following table are the same as those of the first and second modes of the first embodiment and are not repeated here.

[0354] Coordinate Reference Figure 5B 、 Figure 5C 、 Figure 6B as well as Figure 6C ,in Figure 5B Drawing in accordance with Figure 5A A schematic diagram of the imaging device 3 of the third embodiment in the second state of the first mode, Figure 5C Drawing in accordance with Figure 5A A schematic diagram of the imaging device 3 of the third embodiment in the third state of the first mode, Figure 6B From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 3 of the third embodiment in the second state of the first mode. Figure 6C From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device 3 of the third embodiment in the third state of the first mode. The following data in Table 5C can be derived by combining Table 5A and Table 5B:

[0355]

[0356] <Third Embodiment - Second Mode>

[0357] Please refer to Figure 5D as well as Figure 6D ,in Figure 5D FIG. 1 is a schematic diagram illustrating the first state of the imaging device 3 in the second mode according to the third embodiment of the present disclosure. Figure 6D From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 3 of the third embodiment in the first state of the second mode. Figure 5D As can be seen, the imaging device 3 of the third embodiment includes an imaging optical lens (not separately labeled) and an electronic photosensitive element IS. In the second mode, the imaging optical lens comprises, from the object side to the image side of the optical path, an aperture S1, a second-mode object-side lens group GA2, a first optical path deflection element P1, a common lens group GB, a second optical path deflection element P2, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging optical lens, and no other lenses are located between the common lens group GB and the imaging surface IMG.

[0358] The second object-side lens group GA2 includes lens A21 and lens A22 in order from the object side to the image side of the optical path. There is an air gap between lens A21 and lens A22 on the optical axis, and there is no other lens inserted between lens A21 and lens A22.

[0359] Lens A21 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. In addition, the image-side surface of lens A21 includes an inflection point and a critical point.

[0360] Lens A22 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of lens A22 includes an inflection point and a critical point, while the image-side surface of lens A22 also includes an inflection point and a critical point.

[0361] The first light path turning element P1 and the second light path turning element P2 are both prisms, and are both made of glass.

[0362] The shared lens group GB comprises, from the object side to the image side of the optical path, the first lens E1, the second lens E2, the third lens E3, the aperture S2, the fourth lens E4, the aperture S3, the fifth lens E5, and the sixth lens E6. An air gap is provided on the optical axis between any two adjacent lenses among these six lenses (E1, E2, E3, E4, E5, E6), and there are no other lenses interposed between these six lenses. The shared lens group GB comprises, in order, an intermediate lens group Gm and a final lens group Gn. The first lens E1, the second lens E2, and the third lens E3 belong to the intermediate lens group Gm, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 belong to the final lens group Gn.

[0363] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the first lens E1 includes an inflection point, and the image-side surface of the first lens E1 includes two inflection points and a critical point.

[0364] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical.

[0365] The third lens element E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0366] The fourth lens element, E4, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the fourth lens element, E4, includes an inflection point and a critical point, while the image-side surface of the fourth lens element, E4, also includes an inflection point and a critical point.

[0367] The fifth lens element, E5, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element, E5, has two inflection points and a critical point, while the image-side surface of the fifth lens element, E5, also has one inflection point and a critical point.

[0368] The sixth lens element, E6, has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the sixth lens element, E6, includes an inflection point, and the image-side surface of the sixth lens element, E6, also includes an inflection point.

[0369] The filter element E7 is made of glass and is disposed between the second optical path turning element P2 and the imaging surface IMG without affecting the focal length of the imaging optical lens.

[0370] Please refer to Table 6A and Table 6B below.

[0371]

[0372]

[0373]

[0374]

[0375] It should be noted that the aperture position is not disclosed in Table 6A because it can be adjusted depending on the object distance. In other words, the imaging optical lens can have different object distances between different states. In the second mode of the third embodiment, the aperture position in the first state is surface 1, and the aperture position in the second state is surface 1.

[0376] In the second mode of the third embodiment, the curve equation of the aspheric surface is expressed in the same form as the first mode of the first embodiment. In addition, the definitions of the parameters in the following table are the same as those of the first and second modes of the first embodiment and are not repeated here.

[0377] Coordinate Reference Figure 5E as well as Figure 6E ,in Figure 5E Drawing in accordance with Figure 5D A schematic diagram of the imaging device 3 of the third embodiment in the second state of the second mode, Figure 6E From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 3 of the third embodiment in the second state of the second mode.

[0378] Table 6B can be used to extrapolate the following data in Table 6C:

[0379]

[0380] Furthermore, the imaging optical lens of the third embodiment can also satisfy the following conditions in Table 6D:

[0381]

[0382]

[0383] <Fourth Embodiment - First Mode>

[0384] Please refer to Figure 7A as well as Figure 8A ,in Figure 7A FIG. 1 is a schematic diagram illustrating a first state of an imaging device 4 in a first mode according to a fourth embodiment of the present disclosure. Figure 8A From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 4 of the fourth embodiment in the first state of the first mode. Figure 7A As can be seen, the imaging device 4 of the fourth embodiment includes an imaging optical lens (not separately labeled) and an electronic photosensitive element IS. In the first mode, the imaging optical lens comprises, from the object side to the image side of the optical path, an aperture S1, a first-mode object-side lens group GA1, a first optical path deflection element P1, a common lens group GB, a second optical path deflection element P2, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging optical lens, and no other lenses are located between the common lens group GB and the imaging surface IMG.

[0385] The first object-side lens group GA1 includes lens A11, which has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of lens A11 includes an inflection point.

[0386] The first light path turning element P1 and the second light path turning element P2 are both prisms, and are both made of glass.

[0387] The shared lens group GB comprises, from the object side to the image side of the optical path, an aperture S2, a first lens E1, a second lens E2, an aperture S3, a third lens E3, a fourth lens E4, an aperture S4, a fifth lens E5, and a sixth lens E6. An air gap is provided between any two adjacent lenses of these six lenses (E1, E2, E3, E4, E5, E6) on the optical axis, and there are no other lenses interposed between these six lenses. The shared lens group GB comprises, in order, an intermediate lens group Gm and a final lens group Gn. The first lens E1, the second lens E2, and the third lens E3 belong to the intermediate lens group Gm, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 belong to the final lens group Gn.

[0388] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the first lens E1 includes an inflection point, and the image-side surface of the first lens E1 includes two inflection points and a critical point.

[0389] The second lens element E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes two inflection points.

[0390] The third lens element E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0391] The fourth lens element, E4, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the fourth lens element, E4, includes an inflection point and a critical point, while the image-side surface of the fourth lens element, E4, also includes an inflection point and a critical point.

[0392] The fifth lens element, E5, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element, E5, has two inflection points and two critical points, while the image-side surface of the fifth lens element, E5, also has two inflection points and one critical point.

[0393] The sixth lens element, E6, has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, while its image-side surface is concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the sixth lens element, E6, has two inflection points, while its image-side surface has three inflection points and a critical point.

[0394] The filter element E7 is made of glass and is disposed between the second optical path turning element P2 and the imaging surface IMG without affecting the focal length of the imaging optical lens.

[0395] Please refer to Table 7A and Table 7B below.

[0396]

[0397]

[0398]

[0399]

[0400] It should be noted that the aperture position is not disclosed in Table 7A because it can be adjusted depending on the object distance. In other words, the imaging optical lens can have different object distances between different states. In the first mode of the fourth embodiment, the aperture position in the first state is surface 1, the aperture position in the second state is surface 6, and the aperture position in the third state is surface 6.

[0401] In the first mode of the fourth embodiment, the curve equation of the aspheric surface is expressed in the same form as that of the first mode of the first embodiment. In addition, the definitions of the parameters in the following table are the same as those of the first and second modes of the first embodiment and are not repeated here.

[0402] Coordinate Reference Figure 7B 、 Figure 7C 、 Figure 8B as well as Figure 8C ,in Figure 7B Drawing in accordance with Figure 7A A schematic diagram of the imaging device 4 of the fourth embodiment in the second state of the first mode, Figure 7C Drawing in accordance with Figure 7A A schematic diagram of the imaging device 4 of the fourth embodiment in the third state of the first mode, Figure 8B From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 4 of the fourth embodiment in the second state of the first mode. Figure 8C From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device 4 of the fourth embodiment in the third state of the first mode. The following data in Table 7C can be derived by combining Table 7A and Table 7B:

[0403]

[0404]

[0405] <Fourth Embodiment - Second Mode>

[0406] Please refer to Figure 7D as well as Figure 8D ,in Figure 7D FIG. 1 is a schematic diagram illustrating the image capturing device 4 in the first state of the second mode according to the fourth embodiment of the present disclosure. Figure 8D From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 4 of the fourth embodiment in the first state of the second mode. Figure 7D As can be seen, the imaging device 4 of the fourth embodiment includes an imaging optical lens (not separately labeled) and an electronic photosensitive element IS. In the second mode, the imaging optical lens comprises, from the object side to the image side of the optical path, an aperture S1, a second-mode object-side lens group GA2, a first optical path deflection element P1, a common lens group GB, a second optical path deflection element P2, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging optical lens, and no other lenses are located between the common lens group GB and the imaging surface IMG.

[0407] The second object-side lens group GA2 includes lens A21 and lens A22 in order from the object side to the image side of the optical path. There is an air gap between lens A21 and lens A22 on the optical axis, and there is no other lens inserted between lens A21 and lens A22.

[0408] Lens A21 has positive refractive power and is made of glass. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of lens A21 includes an inflection point and a critical point, and the image-side surface of lens A21 also includes an inflection point and a critical point.

[0409] Lens A22 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is also concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of lens A22 has three inflection points and two critical points, while the image-side surface of lens A22 has two inflection points and one critical point.

[0410] The first light path turning element P1 and the second light path turning element P2 are both prisms, and are both made of glass.

[0411] The shared lens group GB comprises, from the object side to the image side of the optical path, an aperture S2, a first lens E1, a second lens E2, an aperture S3, a third lens E3, a fourth lens E4, an aperture S4, a fifth lens E5, and a sixth lens E6. An air gap is provided between any two adjacent lenses of these six lenses (E1, E2, E3, E4, E5, E6) on the optical axis, and there are no other lenses interposed between these six lenses. The shared lens group GB comprises, in order, an intermediate lens group Gm and a final lens group Gn. The first lens E1, the second lens E2, and the third lens E3 belong to the intermediate lens group Gm, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 belong to the final lens group Gn.

[0412] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the first lens E1 includes an inflection point, and the image-side surface of the first lens E1 includes two inflection points and a critical point.

[0413] The second lens element E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes two inflection points.

[0414] The third lens element E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0415] The fourth lens element, E4, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the fourth lens element, E4, includes an inflection point and a critical point, while the image-side surface of the fourth lens element, E4, also includes an inflection point and a critical point.

[0416] The fifth lens element, E5, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the fifth lens element, E5, includes an inflection point and a critical point, while the image-side surface of the fifth lens element, E5, also includes an inflection point and a critical point.

[0417] The sixth lens element, E6, has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the sixth lens element, E6, includes an inflection point, and the image-side surface of the sixth lens element, E6, also includes an inflection point.

[0418] The filter element E7 is made of glass and is disposed between the second optical path turning element P2 and the imaging surface IMG without affecting the focal length of the imaging optical lens.

[0419] Please refer to Table 8A and Table 8B below.

[0420]

[0421]

[0422]

[0423]

[0424]

[0425] It should be noted that the aperture position is not disclosed in Table 8A because the aperture position can be adjusted according to the object distance. That is, the imaging optical lens can have different object distances between different states. In the second mode of the fourth embodiment, the aperture position in the first state is surface 1.

[0426] In the second mode of the fourth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first mode of the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first and second modes of the first embodiment and are not repeated here.

[0427] The following data in Table 8C can be derived by combining Table 8A and Table 8B:

[0428]

[0429]

[0430] Furthermore, the imaging optical lens of the fourth embodiment can also satisfy the following conditions in Table 8D:

[0431]

[0432] <Fifth Embodiment - First Mode>

[0433] Please refer to Figure 9A as well as Figure 10A ,in Figure 9A FIG. 1 is a schematic diagram illustrating an imaging device 5 in a first state of a first mode according to a fifth embodiment of the present disclosure. Figure 10A From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 5 of the fifth embodiment in the first state of the first mode. Figure 9A As can be seen, the imaging device 5 of the fifth embodiment includes an imaging optical lens (not separately labeled) and an electronic photosensitive element IS. In a first mode, the imaging optical lens comprises, from the object side to the image side of the optical path, an aperture S1, a first-mode object-side lens group GA1, a first optical path deflection element P1, a common lens group GB, a second optical path deflection element P2, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging optical lens, and no other lenses are located between the common lens group GB and the imaging surface IMG.

[0434] The first object-side lens group GA1 includes lens A11, which has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of lens A11 includes an inflection point.

[0435] The first light path turning element P1 and the second light path turning element P2 are both prisms, and are both made of glass.

[0436] The shared lens group GB comprises, from the object side to the image side of the optical path, the first lens E1, the second lens E2, the third lens E3, the aperture S2, the fourth lens E4, the aperture S3, the fifth lens E5, and the sixth lens E6. An air gap is provided on the optical axis between any two adjacent lenses among these six lenses (E1, E2, E3, E4, E5, E6), and there are no other lenses interposed between these six lenses. The shared lens group GB comprises, in order, an intermediate lens group Gm and a final lens group Gn. The first lens E1, the second lens E2, and the third lens E3 belong to the intermediate lens group Gm, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 belong to the final lens group Gn.

[0437] The first lens element E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the first lens element E1 has two inflection points, and the image-side surface of the first lens element E1 has three inflection points and three critical points.

[0438] The second lens element E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 has two inflection points, and the image-side surface of the second lens element E2 has one inflection point.

[0439] The third lens element E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0440] The fourth lens element, E4, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the fourth lens element, E4, includes an inflection point and a critical point, while the image-side surface of the fourth lens element, E4, also includes an inflection point and a critical point.

[0441] The fifth lens element, E5, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element, E5, has two inflection points and a critical point, while the image-side surface of the fifth lens element, E5, also has two inflection points and a critical point.

[0442] The sixth lens element, E6, has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the sixth lens element, E6, has two inflection points, and the image-side surface of the sixth lens element, E6, has one inflection point and a critical point.

[0443] The filter element E7 is made of glass and is disposed between the second optical path turning element P2 and the imaging surface IMG without affecting the focal length of the imaging optical lens.

[0444] Please refer to Table 9A and Table 9B below.

[0445]

[0446]

[0447]

[0448] It should be noted that the aperture position is not disclosed in Table 9A because it can be adjusted depending on the object distance. In other words, the imaging optical lens can have different object distances between different states. In the first mode of the fifth embodiment, the aperture position in the first state is surface 1, and the aperture position in the second state is surface 12.

[0449] In the first mode of the fifth embodiment, the curve equation of the aspheric surface is expressed in the same form as that of the first mode of the first embodiment. In addition, the definitions of the parameters in the following table are the same as those of the first and second modes of the first embodiment and are not repeated here.

[0450] Coordinate Reference Figure 9B as well as Figure 10B ,in Figure 9B Drawing in accordance with Figure 9A A schematic diagram of the imaging device 5 of the fifth embodiment in the second state of the first mode, Figure 10B From left to right, the spherical aberration, astigmatism, and distortion curves of the imaging device 5 of the fifth embodiment in the second state of the first mode are shown. The following data in Table 9C can be derived by combining Table 9A and Table 9B:

[0451]

[0452] <Fifth Embodiment-Second Mode>

[0453] Please refer to Figure 9C as well as Figure 10C ,in Figure 9C FIG. 1 is a schematic diagram illustrating the imaging device 5 in the first state of the second mode according to the fifth embodiment of the present disclosure. Figure 10C From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 5 of the fifth embodiment in the first state of the second mode. Figure 9C As can be seen, the imaging device 5 of the fifth embodiment includes an imaging optical lens (not separately labeled) and an electronic photosensitive element IS. In the second mode, the imaging optical lens comprises, from the object side to the image side of the optical path, an aperture S1, a second-mode object-side lens group GA2, a first optical path deflection element P1, a common lens group GB, a second optical path deflection element P2, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging optical lens, and no other lenses are located between the common lens group GB and the imaging surface IMG.

[0454] The second object-side lens group GA2 includes lens A21 and lens A22 in order from the object side to the image side of the optical path. There is an air gap between lens A21 and lens A22 on the optical axis, and there is no other lens inserted between lens A21 and lens A22.

[0455] Lens A21 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the image-side surface of lens A21 includes three inflection points and a critical point.

[0456] Lens A22 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of lens A22 includes five inflection points, while the image-side surface of lens A22 includes one inflection point and a critical point.

[0457] The first light path turning element P1 and the second light path turning element P2 are both prisms, and are both made of glass.

[0458] The shared lens group GB comprises, from the object side to the image side of the optical path, the first lens E1, the second lens E2, the third lens E3, the aperture S2, the fourth lens E4, the aperture S3, the fifth lens E5, and the sixth lens E6. An air gap is provided on the optical axis between any two adjacent lenses among these six lenses (E1, E2, E3, E4, E5, E6), and there are no other lenses interposed between these six lenses. The shared lens group GB comprises, in order, an intermediate lens group Gm and a final lens group Gn. The first lens E1, the second lens E2, and the third lens E3 belong to the intermediate lens group Gm, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 belong to the final lens group Gn.

[0459] The first lens element E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the first lens element E1 includes an inflection point, and the image-side surface of the first lens element E1 includes three inflection points and two critical points.

[0460] The second lens element E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 has two inflection points, and the image-side surface of the second lens element E2 has one inflection point.

[0461] The third lens element E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0462] The fourth lens element, E4, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the fourth lens element, E4, includes an inflection point and a critical point, while the image-side surface of the fourth lens element, E4, also includes an inflection point and a critical point.

[0463] The fifth lens element, E5, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the fifth lens element, E5, includes an inflection point and a critical point, while the image-side surface of the fifth lens element, E5, also includes an inflection point and a critical point.

[0464] The sixth lens element, E6, has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the sixth lens element, E6, includes an inflection point, and the image-side surface of the sixth lens element, E6, also includes an inflection point.

[0465] The filter element E7 is made of glass and is disposed between the second optical path turning element P2 and the imaging surface IMG without affecting the focal length of the imaging optical lens.

[0466] Please refer to Table 10A and Table 10B below.

[0467]

[0468]

[0469]

[0470]

[0471] It should be noted that the aperture position is not disclosed in Table 10A because the aperture position can be adjusted according to the object distance. That is, the imaging optical lens can have different object distances between different states. In the second mode of the fifth embodiment, the aperture position in the first state is surface 1.

[0472] In the second mode of the fifth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first mode of the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first and second modes of the first embodiment and are not repeated here.

[0473] The following data in Table 10C can be derived by combining Table 10A and Table 10B:

[0474]

[0475]

[0476] Furthermore, the imaging optical lens of the fifth embodiment can also satisfy the following conditions in Table 10D:

[0477]

[0478] <Sixth Embodiment - First Mode>

[0479] Please refer to Figure 11A as well as Figure 12A ,in Figure 11A FIG. 1 is a schematic diagram illustrating a first state of an imaging device 6 in a first mode according to a sixth embodiment of the present disclosure. Figure 12AFrom left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 6 of the sixth embodiment in the first state of the first mode. Figure 11A As can be seen, the imaging device 6 of the sixth embodiment includes an imaging optical lens (not separately labeled) and an electronic photosensitive element IS. In a first mode, the imaging optical lens comprises, from the object side to the image side of the optical path, an aperture S1, a first-mode object-side lens group GA1, a first optical path deflection element P1, a common lens group GB, a second optical path deflection element P2, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging optical lens, and no other lenses are located between the common lens group GB and the imaging surface IMG.

[0480] The first object-side lens group GA1 includes lens A11, which has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of lens A11 includes an inflection point.

[0481] The first light path turning element P1 and the second light path turning element P2 are both prisms, and are both made of glass.

[0482] The shared lens group GB comprises, from the object side to the image side of the optical path, the first lens E1, the second lens E2, the third lens E3, the aperture S2, the fourth lens E4, the aperture S3, the fifth lens E5, and the sixth lens E6. An air gap is provided on the optical axis between any two adjacent lenses among these six lenses (E1, E2, E3, E4, E5, E6), and there are no other lenses interposed between these six lenses. The shared lens group GB comprises, in order, an intermediate lens group Gm and a final lens group Gn. The first lens E1, the second lens E2, and the third lens E3 belong to the intermediate lens group Gm, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 belong to the final lens group Gn.

[0483] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the first lens E1 includes an inflection point, and the image-side surface of the first lens E1 includes three inflection points and a critical point.

[0484] The second lens element E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes two inflection points.

[0485] The third lens element E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0486] The fourth lens element, E4, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the fourth lens element, E4, includes an inflection point and a critical point, while the image-side surface of the fourth lens element, E4, also includes an inflection point and a critical point.

[0487] The fifth lens element, E5, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element, E5, has two inflection points and a critical point, while the image-side surface of the fifth lens element, E5, also has two inflection points and a critical point.

[0488] The sixth lens element, E6, has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the sixth lens element, E6, has two inflection points, and the image-side surface of the sixth lens element, E6, has one inflection point and a critical point.

[0489] The filter element E7 is made of glass and is disposed between the second optical path turning element P2 and the imaging surface IMG without affecting the focal length of the imaging optical lens.

[0490] Please refer to Table 11A and Table 11B below.

[0491]

[0492]

[0493]

[0494]

[0495] It should be noted that the aperture position is not disclosed in Table 11A because it can be adjusted depending on the object distance. In other words, the imaging optical lens can have different object distances between different states. In the first mode of the sixth embodiment, the aperture position in the first state is surface 1, and the aperture position in the second state is surface 12.

[0496] In the first mode of the sixth embodiment, the curve equation of the aspheric surface is expressed in the same form as that of the first mode of the first embodiment. In addition, the definitions of the parameters in the following table are the same as those of the first and second modes of the first embodiment and are not repeated here.

[0497] Coordinate Reference Figure 11B as well as Figure 12B ,in Figure 11B Drawing in accordance with Figure 11A A schematic diagram of the imaging device 6 of the sixth embodiment in the second state of the first mode, Figure 12BFrom left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device 6 of the sixth embodiment in the second state of the first mode. The following data in Table 11C can be derived by combining Table 11A and Table 11B:

[0498]

[0499] <Sixth Embodiment - Second Mode>

[0500] Please refer to Figure 11C as well as Figure 12C ,in Figure 11C FIG. 1 is a schematic diagram illustrating the image capturing device 6 in the first state of the second mode according to the sixth embodiment of the present disclosure. Figure 12C From left to right are the spherical aberration, astigmatism and distortion curves of the imaging device 6 of the sixth embodiment in the first state of the second mode. Figure 11C As can be seen, the imaging device 6 of the sixth embodiment includes an imaging optical lens (not separately labeled) and an electronic photosensitive element IS. In the second mode, the imaging optical lens comprises, from the object side to the image side of the optical path, an aperture S1, a second-mode object-side lens group GA2, a first optical path deflection element P1, a common lens group GB, a second optical path deflection element P2, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging optical lens, and no other lenses are located between the common lens group GB and the imaging surface IMG.

[0501] The second object-side lens group GA2 includes lens A21 and lens A22 in order from the object side to the image side of the optical path. There is an air gap between lens A21 and lens A22 on the optical axis, and there is no other lens inserted between lens A21 and lens A22.

[0502] Lens A21 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. In addition, the image-side surface of lens A21 includes an inflection point and a critical point.

[0503] Lens A22 has negative refractive power and is made of glass. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, and both are spherical.

[0504] The first light path turning element P1 and the second light path turning element P2 are both prisms, and are both made of glass.

[0505] The shared lens group GB comprises, from the object side to the image side of the optical path, the first lens E1, the second lens E2, the third lens E3, the aperture S2, the fourth lens E4, the aperture S3, the fifth lens E5, and the sixth lens E6. An air gap is provided on the optical axis between any two adjacent lenses among these six lenses (E1, E2, E3, E4, E5, E6), and there are no other lenses interposed between these six lenses. The shared lens group GB comprises, in order, an intermediate lens group Gm and a final lens group Gn. The first lens E1, the second lens E2, and the third lens E3 belong to the intermediate lens group Gm, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 belong to the final lens group Gn.

[0506] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the first lens E1 includes an inflection point, and the image-side surface of the first lens E1 includes two inflection points and a critical point.

[0507] The second lens element E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes two inflection points.

[0508] The third lens element E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0509] The fourth lens element, E4, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the fourth lens element, E4, includes an inflection point and a critical point, while the image-side surface of the fourth lens element, E4, also includes an inflection point and a critical point.

[0510] The fifth lens element, E5, has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, while its image-side surface is convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element, E5, has two inflection points and a critical point, while the image-side surface of the fifth lens element, E5, also has one inflection point and a critical point.

[0511] The sixth lens element, E6, has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Additionally, the object-side surface of the sixth lens element, E6, includes an inflection point, and the image-side surface of the sixth lens element, E6, also includes an inflection point.

[0512] The filter element E7 is made of glass and is disposed between the second optical path turning element P2 and the imaging surface IMG without affecting the focal length of the imaging optical lens.

[0513] Please refer to Table 12A and Table 12B below.

[0514]

[0515]

[0516]

[0517]

[0518] It should be noted that the aperture position is not disclosed in Table 12A because it can be adjusted depending on the object distance. In other words, the imaging optical lens can have different object distances between different states. In the second mode of the sixth embodiment, the aperture position in the first state is surface 1, and the aperture position in the second state is surface 1.

[0519] In the second mode of the sixth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first mode of the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first and second modes of the first embodiment and are not repeated here.

[0520] Coordinate Reference Figure 11D as well as Figure 12D ,in Figure 11D Drawing in accordance with Figure 11C A schematic diagram of the imaging device 6 of the sixth embodiment in the second state of the second mode, Figure 12D From left to right are the spherical aberration, astigmatism, and distortion curves of the imaging device 6 of the sixth embodiment in the second state of the second mode. The following data in Table 12C can be derived by combining Table 12A and Table 12B:

[0521]

[0522]

[0523] Furthermore, the imaging optical lens of the sixth embodiment can also satisfy the following conditions in Table 12D:

[0524]

[0525] <Seventh embodiment>

[0526] Please refer to Figure 17 , which illustrates a perspective schematic diagram of an imaging device 100 according to the seventh embodiment of the present disclosure. Figure 17As can be seen, the imaging device 100 of the seventh embodiment is a camera module. The imaging device 100 includes an imaging lens 101, a driving device assembly 102, and an electronic photosensitive element 103. The imaging lens 101 includes the imaging system lens assembly of the present disclosure and a lens barrel (not separately labeled) that supports the imaging system lens assembly. The imaging device 100 uses the imaging lens 101 to focus light and capture an object, and cooperates with the driving device assembly 102 to focus the image. Finally, the image is formed on the electronic photosensitive element 103 and the image data is output.

[0527] The driver assembly 102 can be an autofocus module, and its driving method can use a drive system such as a voice coil motor, micro-electromechanical system, piezoelectric system, or memory alloy. The driver assembly 102 can enable the imaging system lens assembly to achieve an optimal imaging position, providing clear images of the subject at various object distances.

[0528] The imaging device 100 may be equipped with an electronic photosensitive element 103 (such as a CMOS or CCD) with high sensitivity and low noise, disposed on the imaging surface of the imaging system lens assembly, thereby truly presenting the excellent imaging quality of the imaging system lens assembly. Furthermore, the imaging device 100 may further include an image stabilization module 104, which may be a kinetic energy sensing element such as an accelerometer, a gyroscope, or a Hall Effect Sensor. In the seventh embodiment, the image stabilization module 104 is a gyroscope, but the present invention is not limited thereto. By adjusting the different axial directions of the imaging system lens assembly to compensate for image blur caused by shaking at the moment of shooting, the image quality of dynamic and low-light scenes is further improved, and advanced image compensation functions such as optical image stabilization (OIS) and electronic image stabilization (EIS) are provided.

[0529] <Eighth Embodiment>

[0530] Please refer to Figure 18A 、 Figure 18B and Figure 18C ,in Figure 18A A schematic diagram illustrating one side of an electronic device 200 according to an eighth embodiment of the present disclosure is shown. Figure 18B Drawing in accordance with Figure 18A A schematic diagram of the other side of the electronic device 200, Figure 18C Drawing in accordance with Figure 18A Schematic diagram of the system of the electronic device 200. Figure 18A 、 Figure 18B and Figure 18CAs can be seen, the electronic device 200 of the eighth embodiment is a smartphone. The electronic device 200 includes imaging devices 100, 110, 120, 130, and 140, a flash module 201, a focus assist module 202, an image signal processor 203 (ISP), a user interface 204, and an image software processor 205. The imaging devices 120, 130, and 140 serve as front-facing lenses. When a user photographs a subject 206 via the user interface 204, the electronic device 200 uses the imaging devices 100, 110, 120, 130, and 140 to focus and capture the image. The flash module 201 is activated for fill light, and the object distance information provided by the focus assist module 202 is used for rapid focusing. Furthermore, the image signal processor 203 and the image software processor 205 perform image optimization processing to further enhance the image quality produced by the imaging lens. The focus assist module 202 may use an infrared or laser focus assist system to achieve fast focusing. The user interface 204 may use a touch screen or a physical capture button to perform image capture and image processing in conjunction with the various functions of the image processing software.

[0531] At least one of the imaging devices 100, 110, 120, 130, and 140 in the eighth embodiment may include the imaging system lens group of the present disclosure, and may be the same as or have a similar structure to the imaging device 100 in the aforementioned seventh embodiment, and will not be described in detail here. In detail, the imaging devices 100 and 110 in the eighth embodiment may be a wide-angle imaging device and an ultra-wide-angle imaging device, respectively, or may be a wide-angle imaging device and a telephoto imaging device, respectively, and the imaging devices 120, 130, and 140 may be a wide-angle imaging device, an ultra-wide-angle imaging device, and a TOF module (Time-Of-Flight; time-of-flight ranging module), respectively, but are not limited to this configuration. In addition, the connection relationship between the imaging devices 110, 120, 130, and 140 and other components can be the same as Figure 18C The imaging device 100 shown in FIG. 1 is the same as that shown in FIG. 1 , or is adaptively adjusted according to the type of imaging device, and is not further illustrated or described in detail herein.

[0532] Ninth embodiment

[0533] Please refer to Figure 19 , which is a schematic diagram illustrating a side of an electronic device 300 according to a ninth embodiment of the present disclosure. The electronic device 300 of the ninth embodiment is a smart phone, and includes imaging devices 310 , 320 , 330 and a flash module 301 .

[0534] The electronic device 300 of the ninth embodiment may include the same or similar elements as those in the aforementioned eighth embodiment, and the connection relationship between the imaging devices 310, 320, 330 and other elements may also be the same or similar to that disclosed in the eighth embodiment, which will not be described in detail here. The imaging devices 310, 320, 330 in the ninth embodiment may all include the imaging system lens group of the present disclosure, and may all be the same as or have a similar structure to the imaging device 100 in the aforementioned seventh embodiment, which will not be described in detail here. In detail, the imaging device 310 may be an ultra-wide-angle imaging device, the imaging device 320 may be a wide-angle imaging device, the imaging device 330 may be a telephoto imaging device (which may include an optical path turning element), or may be another type of imaging device, and is not limited to this configuration.

[0535] <Tenth embodiment>

[0536] Please refer to Figure 20 , which is a schematic diagram illustrating a side of an electronic device 400 according to a tenth embodiment of the present disclosure. The electronic device 400 of the tenth embodiment is a smartphone, and includes imaging devices 410 , 420 , 430 , 440 , 450 , 460 , 470 , 480 , 490 and a flash module 401 .

[0537] The electronic device 400 of the tenth embodiment may include the same or similar components as those of the aforementioned eighth embodiment, and the connection relationship between the imaging devices 410, 420, 430, 440, 450, 460, 470, 480, 490 and the flash module 401 and other components may also be the same or similar as disclosed in the eighth embodiment, and will not be further described here. The imaging devices 410, 420, 430, 440, 450, 460, 470, 480, 490 of the tenth embodiment may all include the imaging system lens assembly of the present disclosure, and may all have the same or similar structures as the imaging device 100 of the aforementioned seventh embodiment, and will not be further described here.

[0538] In detail, the imaging devices 410 and 420 can be ultra-wide-angle imaging devices, respectively; the imaging devices 430 and 440 can be wide-angle imaging devices, respectively; the imaging devices 450 and 460 can be telephoto imaging devices, respectively; the imaging devices 470 and 480 can be telephoto imaging devices (which can include optical path turning elements), respectively; the imaging device 490 can be a TOF module, or can be another type of imaging device, and is not limited to this configuration.

[0539] <Eleventh Embodiment>

[0540] Please refer to Figure 21A as well as Figure 21B ,in Figure 21A A schematic diagram illustrating one side of an electronic device 500 according to an eleventh embodiment of the present disclosure is shown. Figure 21B Drawing in accordance with Figure 21A Schematic diagram of the other side of the electronic device 500. Figure 21A as well as Figure 21B It can be seen that the electronic device 500 of the eleventh embodiment is a smart phone, and the electronic device 500 includes imaging devices 510 , 520 , 530 , 540 and a user interface 504 .

[0541] The electronic device 500 of the eleventh embodiment may include the same or similar components as those of the aforementioned eighth embodiment, and the connections between the imaging devices 510, 520, 530, 540 and the user interface 504 and other components may also be the same or similar as those disclosed in the eighth embodiment, and will not be further described here. Specifically, the imaging device 510 may capture images corresponding to a non-circular opening on the outer side of the electronic device, while the imaging devices 520, 530, and 540 may respectively be a telephoto imaging device, a wide-angle imaging device, and an ultra-wide-angle imaging device, or may be other types of imaging devices, and are not limited to this configuration.

[0542] Although the present disclosure has been disclosed above in the form of implementation methods, it is not intended to limit the present disclosure. Anyone skilled in the art may make various changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the appended claims.

Claims

1. An imaging optical system, characterized in that: It includes an imaging optical lens and at least two openings, corresponding to a first mode and a second mode respectively; The imaging optical lens comprises, in order from the object side to the image side, an object side lens group, a first optical path deflection element, and a common lens group, wherein the object side lens group is a first mode object side lens group or a second mode object side lens group, and the common lens group comprises, in order, an intermediate lens group and a final lens group; The imaging optical lens receives light from one of the at least two openings in the first mode, and includes, in order along the direction of the optical path, the first mode object-side lens group, the first optical path deflection element, and the common lens group; The imaging optical lens receives light from the other of the at least two openings in the second mode, and includes, in order along the direction of the optical path, the second mode object-side lens group, the first optical path deflection element, and the common lens group; Wherein, the first optical path turning element moves along the optical path to switch the imaging optical lens between the first mode and the second mode; The first mode object side lens group, the second mode object side lens group, the intermediate lens group, and the final lens group each include at least one lens, and each lens has an object side surface facing the object side and an image side surface facing the image side; Wherein, at least two of the lenses in the imaging optical lens are made of plastic.

2. The imaging optical system according to claim 1, wherein: At least one of the first mode and the second mode has multiple shooting states, and the multiple shooting states are respectively performed at an object distance of more than 1000 mm and an object distance of less than 350 mm. The lens of the imaging optical lens closest to an imaging surface has at least one inflection point.

3. The imaging optical system according to claim 1, wherein: There is no other lens between the common lens group and an imaging plane; when the object distance is set to a shooting state of infinity, when the imaging optical lens switches between the first mode and the second mode, the movement distance of the first optical path turning element relative to the last lens group along the optical path is TPM12, and the length of the first optical path turning element along the optical axis is CTP1, which satisfies the following conditions: 0.65 <TPM12 / CTP1<2.70。 4. The imaging optical system according to claim 1, wherein: The maximum image height of the imaging optical lens in the first mode is ImgH1, and the maximum image height of the imaging optical lens in the second mode is ImgH2, which meets the following conditions: 1.50 <ImgH1 / ImgH2<3.00。 5. The imaging optical system according to claim 1, wherein: There is another second optical path turning element between the last lens group and an imaging plane. The total number of lenses in the first mode object side lens group is at most two, the total number of lenses in the second mode object side lens group is at most three, and the total number of lenses in the shared lens group is six.

6. The imaging optical system according to claim 3, wherein: The lens closest to the object side of the imaging optical lens is a positive lens, the lens closest to the object side of the shared lens group is a positive lens, and the maximum field angle of view of the first mode differs from that of the second mode by at least 2.0 times or more.

7. The imaging optical system according to claim 1, wherein: The first mode object side lens group and the second mode object side lens group are both fixed relative to the last lens group, and the intermediate lens group moves along the optical path relative to the last lens group.

8. The imaging optical system according to claim 1, wherein: In the first mode and the second mode, when the object distance is set to a shooting state of infinity, the overall focal length of the imaging optical lens is divided by the focal lengths of the three lenses closest to an imaging plane, and the sum of the three values ​​is ΣPGn, which satisfies the following conditions: -5.00<ΣPGn<1.

80.

9. The imaging optical system according to claim 1, wherein: The first mode and the second mode share the same electronic photosensitive element, and the lens of the imaging optical lens closest to an imaging surface is a negative lens.

10. The imaging optical system according to claim 1, wherein: At least one lens in the imaging optical lens has at least one critical point; in a single mode, the distance on the optical axis between the lens surface of the object-side lens group closest to the object side and the lens surface of the object-side lens group closest to the image side is DGA, which satisfies the following conditions: DGA<4.50mm.

11. The imaging optical system according to claim 1, wherein: At least three of the lenses in the imaging optical lens are made of plastic; in all modes and all states of the imaging optical lens, the maximum distance between the lens surface closest to the object side and an imaging plane on the optical axis is TLmax; among the center thicknesses of all the lenses in the imaging optical lens, the maximum lens center thickness is CTmax; and in all modes and all states of the imaging optical lens, the minimum optical effective radius of the lens surface closest to the object side is YGAR1min, which satisfies the following conditions: TLmax<80mm; CTmax <3.0 mm; and 3.80mm <YGAR1min。 12. The imaging optical system according to claim 5, wherein: The first light path turning element and the second light path turning element are both prisms, and adjacent lenses in the imaging optical lens have an air gap on the optical axis.

13. An imaging device, characterized in that: Include: The imaging optical system according to claim 1; and An electronic photosensitive element is arranged on an imaging surface of the imaging optical system.

14. An electronic device, characterized in that: Include: The imaging device according to claim 13.

15. An imaging optical system, characterized in that: It includes an imaging optical lens, corresponding to a first mode and a second mode respectively; The imaging optical lens comprises, in order from the object side to the image side, an object side lens group and a common lens group, wherein the object side lens group is a first mode object side lens group or a second mode object side lens group, and the common lens group comprises, in order, an intermediate lens group and a final lens group; Wherein, when the imaging optical lens is in the first mode, the first mode object side lens group and the common lens group are sequentially arranged along the direction of the optical path; When the imaging optical lens is in the second mode, the second mode object side lens group and the common lens group are sequentially arranged along the direction of the optical path; The first mode object side lens group, the second mode object side lens group, the intermediate lens group, and the final lens group each include at least one lens, and each lens has an object side surface facing the object side and an image side surface facing the image side; Wherein, at least two of the lenses in the imaging optical lens are made of plastic; The total number of lenses in the first mode object-side lens group is at most two, the total number of lenses in the second mode object-side lens group is at most two, the total number of lenses in the shared lens group is six, and the six lenses are, in order, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; The center thickness of the first lens is CT1, the center thickness of the fifth lens is CT5, and the distance between the first lens and the second lens on the optical axis is T12, which meets the following conditions: 1.60<(CT1+T12) / CT5<11.

0.

16. The imaging optical system according to claim 15, wherein: The lens closest to the object side of the imaging optical lens is a positive lens, the fourth lens has negative refractive power, and the image side surface of the second lens is a concave surface.

17. The imaging optical system according to claim 15, wherein: The imaging optical lens comprises only the object-side lens group and the common lens group; in a single mode, the distance on the optical axis between the lens surface of the object-side lens group closest to the image side and the lens surface of the common lens group closest to the object side is TGAB, and the distance on the optical axis between the lens surface closest to the object side and the lens surface closest to the image side in the common lens group is DGB, which satisfies the following conditions: 0.75 <TGAB / DGB<4.0。 18. The imaging optical system according to claim 15, wherein: The refractive index of the fifth lens at the d-line is N5, the focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the fourth lens is f4, which satisfies the following conditions: 1.20≤N5≤1.65; and 0.80<(|f1|+|f2|) / |f4|<2.

0.

19. The imaging optical system according to claim 15, wherein: The center thickness of the first lens is CT1, and the center thickness of the sixth lens is CT6, which meet the following conditions: 0.35 <CT1 / CT6<2.20。 20. The imaging optical system according to claim 16, wherein: In the single mode of the imaging optical lens, the distance on the optical axis from the lens surface of the object-side lens group closest to the object side to the lens surface of the object-side lens group closest to the image side is DGA. In the first mode and the second mode, the center thickness of the first lens is CT1, which satisfies the following conditions: 0.90 <DGA / CT1<3.00。 21. The imaging optical system according to claim 16, wherein: The lens of the imaging optical lens closest to an imaging plane has at least one inflection point, and the intermediate lens group sequentially includes a positive lens, a negative lens and another positive lens.

22. The imaging optical system according to claim 16, wherein: The last lens group includes, in sequence, a negative lens and another lens, and no other lens is between the last lens group and an image plane; the fifth lens has at least one inflection point; the refractive index of the first lens at d-line is N1, the refractive index of the fifth lens at d-line is N5, the Abbe number of the first lens is V1, and the Abbe number of the fifth lens is V5, which satisfy the following conditions: 0.20<10×(N1 / V1+N5 / V5)<1.

35.

23. The imaging optical system according to claim 15, wherein: A first optical path turning element is provided between the object side lens group and the common lens group. The first optical path turning element switches the lens between the first mode and the second mode by rotating or moving along the optical path.

24. The imaging optical system according to claim 23, wherein: The distance between the first lens and the second lens on the optical axis is T12, the focal length of the first lens is f1, and the focal length of the fourth lens is f4, which satisfies the following conditions: 0.08<|10×T12 / f4|<1.50; and -1.20 <f1 / f4<0.00。 25. The imaging optical system according to claim 15, wherein: At least one of the first mode and the second mode has a plurality of shooting states, and the plurality of shooting states are respectively for shooting at an object distance of 1000 mm or more and an object distance of 250 mm or less.

26. The imaging optical system according to claim 25, wherein: The image side surface of the third lens is convex; the first mode object side lens group and the second mode object side lens group are both fixed relative to the last lens group, and the intermediate lens group moves along the optical path relative to the last lens group.

27. The imaging optical system according to claim 15, wherein: The maximum field of view angles of the first mode and the second mode differ by at least 2.0 times or more.

28. The imaging optical system according to claim 15, wherein: The center thickness of the first lens is CT1, the center thickness of the fifth lens is CT5, and the center thickness of the sixth lens is CT6. The distance between the first lens and the second lens on the optical axis is T12. In the single mode of the imaging optical lens, the distance on the optical axis between the lens surface of the object-side lens group closest to the image side and the lens surface of the shared lens group closest to the object side is TGAB. In the shared lens group, the distance on the optical axis from the lens surface closest to the object side to the lens surface closest to the image side is DGB. The focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the fourth lens is f4. The refractive index of the first lens at d-line is N1, the refractive index of the fifth lens at d-line is N5, the Abbe number of the first lens is V1, and the Abbe number of the fifth lens is V5, which satisfies the following conditions: 2.63≤(CT1+T12) / CT5≤4.24; 0.96≤TGAB / DGB≤3.04; 0.90<(|f1|+|f2|) / |f4|<1.80; 0.86≤CT1 / CT6≤1.46; 0.15≤|10×T12 / f4|≤0.30; -0.85≤f1 / f4≤-0.67; as well as 0.50<10×(N1 / V1+N5 / V5)<1.

20.

29. The imaging optical system according to claim 15, wherein: The refractive index of the first lens at the d-line is N1, the refractive index of the fifth lens at the d-line is N5, the Abbe number of the first lens is V1, the Abbe number of the fifth lens is V5, the focal length of the first lens is f1, the focal length of the third lens is f3, and the focal length of the fourth lens is f4, which satisfy the following conditions: 0.50 < 10 × (N1 / V1 + N5 / V5) < 1.40; and 0.60<|f1 / f3|+|f1 / f4|<3.00.

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