Image capturing system, image capturing device and electronic device

Abstract

An image capturing system includes six lenses. The six lenses are sequentially arranged along an optical path from an object side to an image side as a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The six lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction. The fourth lens has a positive refractive power. The object side surface of the fourth lens is concave at a vicinity of an optical axis, and the image side surface of the fourth lens is convex at the vicinity of the optical axis. At least one surface of the object side surface and the image side surface of at least one lens in the image capturing system has at least one inflection point. When certain conditions are met, the image capturing system can simultaneously meet the requirements of wide angle, miniaturization, large imaging area and high imaging quality. An image capturing device having the image capturing system and an electronic device having the image capturing device are also disclosed.

Description

Technical Field

[0001] The present invention relates to an image capturing system assembly, an image capturing device, and an electronic device, particularly an image capturing system assembly and an image capturing device suitable for electronic devices. Background Technology

[0002] With advancements in semiconductor technology, the performance of electronic image sensors has improved, and pixels can be made smaller. As a result, optical lenses with high image quality have become an indispensable component.

[0003] With the rapid advancement of technology, electronic devices equipped with optical lenses are being used in a wider range of applications, leading to more diverse requirements for these lenses. Since existing optical lenses often struggle to achieve a balance between image quality, sensitivity, aperture size, size, and viewing angle, this invention provides an optical lens that meets these needs. Summary of the Invention

[0004] This invention provides an image capturing system assembly, an image acquisition device, and an electronic device. The image capturing system assembly includes six lenses arranged sequentially from the object side to the image side along the optical path. Under certain conditions, the image capturing system assembly provided by this invention can simultaneously meet the requirements of wide viewing angle, miniaturization, large imaging surface, and high image quality.

[0005] This invention provides an image capturing system assembly comprising six lenses. The six lenses, arranged sequentially from the object side to the image side along the optical path, are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. Each of the six lenses has an object-side surface facing the object side and an image-side surface facing the image side. The image-side surface of the second lens is convex near the optical axis. The fourth lens has positive refractive power; its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. The object-side surface of the sixth lens is convex near the optical axis, and its image-side surface is concave near the optical axis. At least one lens in the image capturing system assembly has at least one inflection point on at least one of its object-side and image-side surfaces. The Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the thickness of the first lens along the optical axis is CT1, the thickness of the second lens along the optical axis is CT2, the thickness of the third lens along the optical axis is CT3, the thickness of the fourth lens along the optical axis is CT4, the distance between the first and second lenses along the optical axis is T12, the distance between the third and fourth lenses along the optical axis is T34, half of the maximum field of view in the image capturing system group is HFOV, and the radius of curvature of the image-side surface of the second lens is R4, which satisfies the following conditions:

[0006] 1.2 <V4 / V5<7.0;

[0007] 3.5 < (CT1 + CT2) / T12 < 9.0;

[0008] (CT3 + CT4) / T34 < 6.5;

[0009] 52.0 degrees < HFOV < 80.0 degrees; and

[0010] -7.0 < R4 / CT2 < -1.6.

[0011] The present invention further provides an image capturing system group, including six lenses. The six lenses are, in order from the object side to the image side along the optical path, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens. The six lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction. The second lens has a positive refractive power, and the image side surface of the second lens is convex near the optical axis. The fourth lens has a positive refractive power, the object side surface of the fourth lens is concave near the optical axis, and the image side surface of the fourth lens is convex near the optical axis. The image side surface of the sixth lens is concave near the optical axis. At least one surface of the object side surface and the image side surface of at least one lens in the image capturing system group has at least one inflection point. The Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, the distance between the first lens and the second lens on the optical axis is T12, the distance between the third lens and the fourth lens on the optical axis is T34, half of the maximum viewing angle in the image capturing system group is HFOV, the focal length of the image capturing system group is f, the radius of curvature of the object side surface of the first lens is R1, the radius of curvature of the image side surface of the first lens is R2, and they satisfy the following conditions:

[0012] 1.2 < V4 / V5 < 7.0;

[0013] 2.5 < (CT1 + CT2) / T12 < 9.0;

[0014] (CT3 + CT4) / T34 < 5.5;

[0015] 52.0 degrees < HFOV < 80.0 degrees; and

[0016] |f / R1| + |f / R2| < 1.5.

[0017] The present invention further provides an image capturing system group, which includes six lenses. The six lenses are, in order from the object side to the image side along the optical path, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The six lenses respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction. The second lens has a positive refractive power. The fourth lens has a positive refractive power. The object-side surface of the fourth lens is concave near the optical axis, and the image-side surface of the fourth lens is convex near the optical axis. The object-side surface of the sixth lens is convex near the optical axis. At least one surface of the object-side surface and the image-side surface of at least one lens in the image capturing system group has at least one inflection point. The Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, the distance between the first lens and the second lens on the optical axis is T12, the distance between the third lens and the fourth lens on the optical axis is T34, half of the maximum viewing angle of the image capturing system group is HFOV, the focal length of the image capturing system group is f, and the radius of curvature of the object-side surface of the first lens is R1, which satisfies the following conditions:

[0018] 1.2 < V4 / V5 < 7.0;

[0019] 3.5 < (CT1 + CT2) / T12 < 9.0;

[0020] (CT3 + CT4) / T34 < 5.0;

[0021] 52.0 degrees < HFOV < 80.0 degrees; and

[0022] |f / R1| < 0.90.

[0023] The present invention provides an imaging device, which includes the aforementioned image capturing system group and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the image capturing system group.

[0024] The present invention provides an electronic device, which includes the aforementioned imaging device.

[0025] When V4 / V5 satisfies the above conditions, the fourth lens and the fifth lens can cooperate with each other, which helps to correct aberrations such as chromatic aberration.

[0026] When (CT1 + CT2) / T12 satisfies the above conditions, the first lens and the second lens can cooperate with each other, which helps to compress the volume of the object side end of the image capturing system group and increase the viewing angle.

[0027] When (CT3 + CT4) / T34 satisfies the above conditions, the third lens and the fourth lens can cooperate with each other, which helps to balance the volume distribution of the object side end and the image side end of the image capturing system group.

[0028] When HFOV meets the above conditions, it can enable the image capturing system to have a wide field of view and avoid excessive distortion that would make image processing too difficult.

[0029] When R4 / CT2 meets the above conditions, the surface shape of the second lens can be adjusted, which helps to compress the volume of the image acquisition system assembly at the object side.

[0030] When |f / R1|+|f / R2| meet the above conditions, the surface shape and refractive power of the first lens can be adjusted, which helps to increase the viewing angle and correct aberrations.

[0031] When |f / R1| meets the above conditions, the surface shape and refractive power of the first lens can be adjusted, which helps to compress the outer diameter of the image capturing system assembly at the object side.

[0032] The foregoing description of the invention and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of the invention, and to provide a further explanation of the claims. Attached Figure Description

[0033] Figure 1 A schematic diagram of an image-capturing device according to a first embodiment of the present invention is shown.

[0034] Figure 2 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the first embodiment.

[0035] Figure 3 A schematic diagram of an image-capturing device according to a second embodiment of the present invention is shown.

[0036] Figure 4 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the second embodiment.

[0037] Figure 5 A schematic diagram of an image-capturing device according to a third embodiment of the present invention is shown.

[0038] Figure 6 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the third embodiment.

[0039] Figure 7 A schematic diagram of an image-capturing device according to a fourth embodiment of the present invention is shown.

[0040] Figure 8 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fourth embodiment.

[0041] Figure 9 A schematic diagram of an image-capturing device according to a fifth embodiment of the present invention is shown.

[0042] Figure 10From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fifth embodiment.

[0043] Figure 11 A schematic diagram of an image-capturing device according to a sixth embodiment of the present invention is shown.

[0044] Figure 12 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the sixth embodiment.

[0045] Figure 13 A schematic diagram of an image-capturing device according to a seventh embodiment of the present invention is shown.

[0046] Figure 14 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the seventh embodiment.

[0047] Figure 15 A schematic diagram of an imaging device according to the eighth embodiment of the present invention is shown.

[0048] Figure 16 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eighth embodiment.

[0049] Figure 17 A perspective schematic diagram of an imaging device according to a ninth embodiment of the present invention is shown.

[0050] Figure 18 A perspective view of one side of an electronic device according to a tenth embodiment of the present invention is shown.

[0051] Figure 19 Draw Figure 18 A three-dimensional diagram of the other side of the electronic device.

[0052] Figure 20 Draw Figure 18 System block diagram of an electronic device.

[0053] Figure 21 A perspective view of one side of an electronic device according to the eleventh embodiment of the present invention is shown.

[0054] Figure 22 A perspective view of one side of an electronic device according to the twelfth embodiment of the present invention is shown.

[0055] Figure 23 A schematic diagram illustrating parameters YS, Y11, Yc51, Yc52, Yc61, Y62, Yc62, and partial inversion points and critical points of the lens according to the first embodiment of the present invention is shown.

[0056] Figure 24 A schematic diagram illustrating an arrangement of an optical path reversing element in an image capturing system according to the present invention is shown.

[0057] Figure 25 A schematic diagram illustrating another configuration of an optical path reversing element according to the present invention in an image capturing system assembly is shown.

[0058] Figure 26 A schematic diagram illustrating one configuration of two optical path deflection elements according to the present invention in an image capturing system assembly is shown.

[0059] [Symbol Explanation]

[0060] 1,2,3,4,5,6,7,8,100,100a,100b,100c,100d,100e,100f,100g,100h,100i,100j,100k,100m,100n,100p: Image capturing device

[0061] 101: Imaging Lens

[0062] 102: Drive unit

[0063] 103: Electronic photosensitive element

[0064] 104: Image Stabilization Module

[0065] 200, 300, 400: Electronic devices

[0066] 201, 301, 401: Flash module

[0067] 202: Focusing Assist Module

[0068] 203: Image Signal Processor

[0069] 204: Display Module

[0070] 205: Image Software Processor

[0071] 206: Subject

[0072] C: Critical point

[0073] P: Inversion point

[0074] OA1: First optical axis

[0075] OA2: Second optical axis

[0076] OA3: Third optical axis

[0077] LF: Optical path switching element

[0078] LF1: First optical path switching element

[0079] LF2: Second optical path switching element

[0080] LG: Lens Group

[0081] ST: Aperture

[0082] S1, S2, S3: Aperture

[0083] E1: First lens

[0084] E2: Second lens

[0085] E3: Third Lens

[0086] E4: Fourth Lens

[0087] E5: Fifth Lens

[0088] E6: Sixth Lens

[0089] E7: Filter element

[0090] IMG: Imaging Surface

[0091] IS: Electronic photosensitive element

[0092] YS: Aperture radius

[0093] Y11: Maximum effective radius of the object-side surface of the first lens

[0094] Y62: Maximum effective radius of the image-side surface of the sixth lens

[0095] Yc51: The perpendicular distance between the concave critical point on the object-side surface of the fifth lens and the optical axis.

[0096] Yc52: The perpendicular distance between the convex critical point of the image-side surface of the fifth lens and the optical axis.

[0097] Yc61: The perpendicular distance between the concave critical point on the object-side surface of the sixth lens and the optical axis.

[0098] Yc62: The perpendicular distance between the convex critical point of the image-side surface of the sixth lens and the optical axis. Detailed Implementation

[0099] The image capturing system assembly includes six lenses, which are arranged sequentially from the object side to the image side along the optical path as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. Each of the six lenses has an object-side surface facing the object side and an image-side surface facing the image side.

[0100] The second lens may have positive refractive power; thereby, it helps to reduce the volume of the object-side portion of the image capturing system assembly. The image-side surface of the second lens may be convex near the optical axis; thereby, the surface shape and refractive power of the second lens can be adjusted, which helps to reduce the volume of the object-side portion of the image capturing system assembly.

[0101] The fourth lens has a positive refractive power; thereby, it helps to compress the volume at the image side end of the imaging system. The object side surface of the fourth lens is concave near the optical axis; thereby, the traveling direction of light can be adjusted, which helps to compress the outer diameter at the object side end of the imaging system. The image side surface of the fourth lens is convex near the optical axis; thereby, the traveling direction of light can be adjusted, which helps to increase the imaging surface.

[0102] The object side surface of the sixth lens may be convex near the optical axis; thereby, the surface shape of the sixth lens can be adjusted, which helps to correct aberrations. The image side surface of the sixth lens may be concave near the optical axis; thereby, it helps to adjust the back focal length within an appropriate range.

[0103] In the imaging system group disclosed in the present invention, at least one surface of at least one of the object side surface and the image side surface of at least one lens has at least one inflection point. Thereby, the degree of change of the lens surface can be increased, which helps to correct aberrations and compress the volume of the lens. Among them, there may also be at least two lenses in the imaging system group, and at least one surface of at least one of their respective object side surfaces and image side surfaces has at least one inflection point. Among them, there may also be at least three lenses in the imaging system group, and at least one surface of at least one of their respective object side surfaces and image side surfaces has at least one inflection point. Please refer to Figure 23 , a schematic diagram showing the inflection points P of the second lens E2, the fourth lens E4, the fifth lens E5, and the sixth lens E6 in the first embodiment of the present invention is shown. Figure 23 The inflection points P of the second lens E2, the fourth lens E4, the fifth lens E5, and the sixth lens E6 in the first embodiment of the present invention are shown as an exemplary illustration. However, in other embodiments of the present invention, each lens may have one or more inflection points.

[0104] The object side surface of the fifth lens may have at least one concave critical point off the axis; thereby, the traveling direction of light can be adjusted, which helps to increase the imaging surface. The image side surface of the fifth lens may have at least one convex critical point off the axis; thereby, the surface shape of the fifth lens can be adjusted, which helps to correct off-axis aberrations such as image curvature. Among them, the vertical distance between the concave critical point of the object side surface of the fifth lens and the optical axis is Yc51, and the vertical distance between the convex critical point of the image side surface of the fifth lens and the optical axis is Yc52. The object side surface of the fifth lens may have at least one concave critical point off the axis and the image side surface of the fifth lens may have at least one convex critical point off the axis, satisfying the following condition: 0.70 < Yc52 / Yc51 < 1.4; thereby, the surface shape of the fifth lens can be adjusted, which helps to increase the field of view and improve the image quality. Please refer to Figure 23 , a schematic diagram showing the parameters Yc51, Yc52, and some critical points C of the fifth lens E5 off the axis in the first embodiment of the present invention is shown.

[0105] The object-side surface of the sixth lens may have at least one concave critical point off the axis; thereby, the direction of light incident on the sixth lens can be adjusted, which helps to reduce the surface reflection of wide-field light. The image-side surface of the sixth lens may have at least one convex critical point off the axis; thereby, the incident angle of light on the imaging surface can be adjusted, which helps to improve the response efficiency of the electronic photosensitive element. Among them, the vertical distance between the concave critical point of the object-side surface of the sixth lens and the optical axis is Yc61, and the vertical distance between the convex critical point of the image-side surface of the sixth lens and the optical axis is Yc62. The object-side surface of the sixth lens may have at least one concave critical point off the axis and the image-side surface of the sixth lens may have at least one convex critical point off the axis, satisfying the following condition: 1.0 < Yc62 / Yc61 < 2.0; thereby, the surface shape of the sixth lens can be adjusted, which helps to improve the image quality around the imaging surface. Please refer to Figure 23 , which shows a schematic diagram of the parameters Yc61, Yc62 and the critical point C of the sixth lens E6 off the axis according to the first embodiment of the present invention. Figure 23 The partial critical points C of the fifth lens E5 and the sixth lens E6 off the axis in the first embodiment of the present invention are shown as an exemplary illustration. However, in this embodiment and other embodiments of the present invention, each lens may have one or more critical points off the axis.

[0106] The Abbe number of the fourth lens is V4, and the Abbe number of the fifth lens is V5, which satisfy the following condition: 1.2 < V4 / V5 < 7.0. Thereby, the fourth lens and the fifth lens can cooperate with each other, which helps to correct aberrations such as chromatic aberration. Among them, the following condition may also be satisfied: 1.7 < V4 / V5 < 6.0. Among them, the following condition may also be satisfied: 2.2 < V4 / V5 < 5.5. Among them, the following condition may also be satisfied: 2.7 < V4 / V5 < 5.0.

[0107] The thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, and the distance between the first and second lenses on the optical axis is T12, satisfying the following conditions: 2.5 < (CT1 + CT2) / T12 or (CT1 + CT2) / T12 < 9.0. This allows the first and second lenses to work together, helping to compress the volume of the object-side components of the image capturing system and increase the viewing angle. Alternatively, the following conditions may also be satisfied: 3.0 < (CT1 + CT2) / T12. Alternatively, the following conditions may also be satisfied: 3.5 < (CT1 + CT2) / T12. Alternatively, the following conditions may also be satisfied: 4.0 < (CT1 + CT2) / T12. Alternatively, the following conditions may also be satisfied: (CT1 + CT2) / T12 < 8.0. Alternatively, the following conditions may also be satisfied: (CT1 + CT2) / T12 < 7.0. The following conditions can also be met: 2.5 < (CT1 + CT2) / T12 < 9.0. Alternatively, the following conditions can be met: 3.5 < (CT1 + CT2) / T12 < 9.0. Alternatively, the following conditions can be met: 3.0 < (CT1 + CT2) / T12 < 8.0. Alternatively, the following condition can be met: 4.0 < (CT1 + CT2) / T12 < 7.0.

[0108] The thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, and the distance between the third and fourth lenses on the optical axis is T34, satisfying the following conditions: 1.0 < (CT3 + CT4) / T34 or (CT3 + CT4) / T34 < 6.5. This allows the third and fourth lenses to work together, helping to balance the volume distribution of the image acquisition system assembly at the object-side and image-side ends. Alternatively, the following conditions may also be satisfied: 1.4 < (CT3 + CT4) / T34. Alternatively, the following conditions may also be satisfied: 1.7 < (CT3 + CT4) / T34. Alternatively, the following conditions may also be satisfied: 2.0 < (CT3 + CT4) / T34. Alternatively, the following conditions may also be satisfied: (CT3 + CT4) / T34 < 6.0. Alternatively, the following conditions may also be satisfied: (CT3 + CT4) / T34 < 5.5. Alternatively, the following conditions may also be satisfied: (CT3 + CT4) / T34 < 5.0. The following conditions can also be met: (CT3+CT4) / T34<4.5. The following conditions can also be met: (CT3+CT4) / T34<4.0. The following conditions can also be met: 1.0<(CT3+CT4) / T34<6.0. The following conditions can also be met: 1.7<(CT3+CT4) / T34<5.0. The following conditions can also be met: 2.0<(CT3+CT4) / T34<4.5.

[0109] Half of the maximum viewing angle in the image capture system group is HFOV, which satisfies the following conditions: 52.0 degrees < HFOV < 80.0 degrees. Thereby, the image capture system group can have the characteristic of a wide viewing angle and can avoid excessive distortion that may lead to excessive difficulty in image processing. Among them, the following conditions can also be satisfied: 54.5 degrees < HFOV < 70.0 degrees.

[0110] The radius of curvature of the image-side surface of the second lens is R4, and the thickness of the second lens on the optical axis is CT2, which can satisfy the following conditions: -7.0 < R4 / CT2 < -1.6. Thereby, the surface shape of the second lens can be adjusted, which helps to compress the volume of the image capture system group at the object side end. Among them, the following conditions can also be satisfied: -6.0 < R4 / CT2 < -1.9. Among them, the following conditions can also be satisfied: -5.0 < R4 / CT2 < -2.2.

[0111] The focal length of the image capture system group is f, the radius of curvature of the object-side surface of the first lens is R1, and the radius of curvature of the image-side surface of the first lens is R2, which can satisfy the following conditions: |f / R1| + |f / R2| < 1.5. Thereby, the surface shape and refractive power of the first lens can be adjusted, which helps to increase the viewing angle and correct aberrations. Among them, the following conditions can also be satisfied: |f / R1| + |f / R2| < 1.2. Among them, the following conditions can also be satisfied: |f / R1| + |f / R2| < 0.90. Among them, the following conditions can also be satisfied: |f / R1| + |f / R2| < 0.70.

[0112] The focal length of the image capture system group is f, the radius of curvature of the object-side surface of the first lens is R1, which can satisfy the following conditions: |f / R1| < 0.90. Thereby, the surface shape and refractive power of the first lens can be adjusted, which helps to compress the outer diameter of the image capture system group at the object side end. Among them, the following conditions can also be satisfied: |f / R1| < 0.75. Among them, the following conditions can also be satisfied: |f / R1| < 0.60. Among them, the following conditions can also be satisfied: |f / R1| < 0.45.

[0113] The Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, and the Abbe number of the fifth lens is V5, which can satisfy the following conditions: 2.8 < (V2 + V4) / (V3 + V5) < 6.0. Thereby, the material configuration of the lens can be adjusted to correct aberrations.

[0114] The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum imaging height of the image capture system group is ImgH (which can be half of the total length of the diagonal of the effective sensing area of the electronic photosensitive element), which can satisfy the following conditions: 1.0 < TL / ImgH < 2.0. Thereby, a balance can be achieved between compressing the total length and increasing the imaging surface.

[0115] The entrance pupil diameter of the image capture system group is EPD, and the maximum effective radius of the object side surface of the first lens is Y11, which can satisfy the following condition: 1.8 < EPD / Y11 < 2.2. Thereby, it helps to achieve a balance between increasing the aperture and compressing the outer diameter of the object side end of the image capture system group. Please refer to Figure 23 , which shows a schematic diagram of the parameter Y11 in the first embodiment of the present invention.

[0116] The radius of curvature of the object side surface of the sixth lens is R11, and the radius of curvature of the image side surface of the sixth lens is R12, which can satisfy the following condition: 2.0 < (R11 + R12) / (R11 - R12). Thereby, the surface shape of the sixth lens can be adjusted, which helps to correct aberration. Among them, the following condition can also be satisfied: 2.5 < (R11 + R12) / (R11 - R12) < 14.

[0117] The focal length of the image capture system group is f, the focal length of the fifth lens is f5, and the focal length of the sixth lens is f6, which can satisfy the following condition: -2.0 < f / f5 + f / f6 < 0. Thereby, the refractive power distribution of the image side end of the image capture system group can be balanced, which helps to correct aberration. Among them, the following condition can also be satisfied: -1.2 < f / f5 + f / f6 < -0.45.

[0118] The radius of curvature of the object side surface of the fifth lens is R9, the radius of curvature of the image side surface of the fifth lens is R10, the radius of curvature of the object side surface of the sixth lens is R11, and the radius of curvature of the image side surface of the sixth lens is R12, which can satisfy the following condition: |R11 / R9| + |R12 / R10| < 0.50. Thereby, the fifth lens and the sixth lens can cooperate with each other to correct aberration.

[0119] The Abbe number of the first lens is V1, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the Abbe number of the sixth lens is V6, the Abbe number of the i-th lens is Vi, the refractive index of the first lens is N1, the refractive index of the second lens is N2, the refractive index of the third lens is N3, the refractive index of the fourth lens is N4, the refractive index of the fifth lens is N5, the refractive index of the sixth lens is N6, the refractive index of the i-th lens is Ni, and at least one lens in the image capture system group can satisfy the following condition: 5.0 < Vi / Ni < 11, where i = 1, 2, 3, 4, 5, 6. Thereby, the material distribution can be adjusted, which helps to compress the volume and correct aberration.

[0120] The thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, and the thickness of the sixth lens on the optical axis is CT6. The distance between the fourth lens and the fifth lens on the optical axis is T45, and the distance between the fifth lens and the sixth lens on the optical axis is T56, which can satisfy the following condition: 3.3 < (CT4 + CT5 + CT6) / (T45 + T56) < 50. Thereby, the lens distribution at the image side end of the image capture system group can be adjusted, which helps to compress the total length.

[0121] The F-number of the image capture system group is Fno, which can satisfy the following condition: 1.4 < Fno < 2.4. Thereby, a balance can be achieved between illuminance and depth of field.

[0122] Half of the maximum viewing angle in the image capture system group is HFOV, the maximum effective radius of the object side surface of the first lens is Y11, and the maximum effective radius of the image side surface of the sixth lens is Y62, which can satisfy the following condition: 5.0 < tan(HFOV) × Y62 / Y11. Thereby, the traveling direction of light can be adjusted, which helps to achieve a balance between the viewing angle and the volume distribution. Among them, the following condition can also be satisfied: 5.5 < tan(HFOV) × Y62 / Y11 < 15. Among them, the following condition can also be satisfied: 6.0 < tan(HFOV) × Y62 / Y11 < 10. Please refer to Figure 23 , a schematic diagram showing the parameters Y11 and Y62 in the first embodiment of the present invention is illustrated.

[0123] The radius of curvature of the object side surface of the fourth lens is R7, and the focal length of the fourth lens is f4, which can satisfy the following condition: -1.3 < R7 / f4 < -0.40. Thereby, the surface shape and refractive power of the fourth lens can be adjusted, which helps to compress the volume. Among them, the following condition can also be satisfied: -1.0 < R7 / f4 < -0.55.

[0124] The Abbe number of the fifth lens is V5, and the Abbe number of the sixth lens is V6, which can satisfy the following condition: 20.0 < V5 + V6 < 65.0. Thereby, the fifth lens and the sixth lens can cooperate with each other, which helps to correct chromatic aberration. Among them, the following condition can also be satisfied: 30.0 < V5 + V6 < 60.0.

[0125] The maximum effective radius of the object side surface of the first lens is Y11, and the maximum effective radius of the image side surface of the sixth lens is Y62, which can satisfy the following condition: 3.4 < Y62 / Y11 < 5.0. Thereby, the traveling direction of light can be adjusted, which helps to compress the outer diameter of the image capture system group at the object side end and increase the imaging surface.

[0126] The image capture system group disclosed by the present invention further includes an aperture. The aperture radius is YS, and the maximum effective radius of the object-side surface of the first lens is Y11, which can satisfy the following condition: 0.90 < YS / Y11 < 1.1. Thereby, it helps to achieve a balance between increasing the aperture and compressing the outer diameter of the image capture system group at the object side end. Please refer to Figure 23 , which shows a schematic diagram of the parameters YS and Y11 in the first embodiment of the present invention.

[0127] The focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the third lens is f3, which can satisfy the following condition: |f2 / f1| + |f2 / f3| < 1.0. Thereby, the refractive power distribution of the image capture system group at the object side end can be adjusted, which helps to correct aberrations. Among them, the following condition can also be satisfied: |f2 / f1| + |f2 / f3| < 0.70.

[0128] The curvature radius of the object-side surface of the fourth lens is R7, and the curvature radius of the image-side surface of the fourth lens is R8, which can satisfy the following condition: 1.0 < (R7 + R8) / (R7 - R8) < 6.0. Thereby, the surface shape of the fourth lens can be adjusted, which helps to balance the volume distribution of the image capture system group at the object side end and the image side end. Among them, the following condition can also be satisfied: 1.7 < (R7 + R8) / (R7 - R8) < 4.8. Among them, the following condition can also be satisfied: 2.3 < (R7 + R8) / (R7 - R8) < 3.6.

[0129] Each technical feature in the image capture system group disclosed by the above present invention can be combined and configured to achieve the corresponding effects.

[0130] In the image capture system group disclosed by the present invention, the material of the lens can be glass or plastic. If the material of the lens is glass, the freedom degree of the refractive power configuration of the image capture system group can be increased, and the influence of the external environmental temperature change on imaging can be reduced, and the glass lens can be made by techniques such as grinding or molding. If the lens material is plastic, the production cost can be effectively reduced. In addition, a spherical surface or an aspherical surface (ASP) can be set on the lens surface. Among them, the spherical lens can reduce the manufacturing difficulty, and if an aspherical surface is set on the lens surface, more control variables can be obtained thereby to eliminate aberrations, reduce the number of lenses, and effectively reduce the total length of the image capture system group of the present invention. Further, the aspherical surface can be made by methods such as plastic injection molding or molding of glass lenses.

[0131] In the image capture system group disclosed by the present invention, if the lens surface is an aspherical surface, it means that all or a part of the optically effective area of the lens surface is an aspherical surface.

[0132] In the image capturing system group disclosed in this invention, additives can be selectively added to any (or more) lens materials to produce light absorption or light interference effects, thereby changing the lens's transmittance for specific wavelengths of light and reducing stray light and color shift. For example, the additives may have the function of filtering out light in the 600 nm to 800 nm wavelength range to help reduce excess red or infrared light; or they may filter out light in the 350 nm to 450 nm wavelength range to reduce excess blue or ultraviolet light. Therefore, the additives can prevent specific wavelengths of light from interfering with imaging. Furthermore, the additives can be uniformly mixed into plastic and manufactured into lenses using injection molding technology. Additionally, the additives can also be deposited on the lens surface as a coating to provide the aforementioned effects.

[0133] In the image capturing system group disclosed in this invention, if the lens surface is convex and the position of the convex surface is not defined, it means that the convex surface can be located near the optical axis of the lens surface; if the lens surface is concave and the position of the concave surface is not defined, it means that the concave surface can be located near the optical axis of the lens surface. If the refractive power or focal length of the lens is not defined in its region, it means that the refractive power or focal length of the lens can be the refractive power or focal length of the lens near the optical axis.

[0134] In the image capturing system assembly disclosed in this invention, the inflection point of the lens surface refers to the boundary point where the curvature of the lens surface changes from positive to negative. The critical point of the lens surface refers to the point of tangency on the tangent line between a plane perpendicular to the optical axis and the lens surface, and the critical point is not located on the optical axis.

[0135] In the image capturing system group disclosed in this invention, the imaging surface of the image capturing system group can be a plane or a curved surface with any curvature, depending on the corresponding electronic photosensitive element, especially a curved surface with a concave surface facing the object side.

[0136] In the image capturing system assembly disclosed in this invention, one or more imaging correction elements (such as planar elements) can be selectively disposed between the lens closest to the imaging surface and the imaging surface in the imaging optical path to achieve the effect of correcting image curvature (such as image warping). The optical properties of the imaging correction element, such as curvature, thickness, refractive index, position, and surface type (convex or concave, spherical or aspherical, diffractive surface, and Fresnel surface, etc.), can be adjusted according to the requirements of the imaging device. Generally, a preferred configuration of the imaging correction element is to place a thin plano-concave element with a concave surface in the object-side direction near the imaging surface.

[0137] In the image capturing system assembly disclosed in this invention, at least one element with a deflecting optical path function, such as a prism or a mirror, can be selectively disposed between the subject and the imaging surface in the imaging optical path. This provides a higher degree of spatial flexibility in the spatial configuration of the image capturing system assembly, allowing the thinner and lighter electronic device to be independent of the overall optical length of the image capturing system assembly. For further explanation, please refer to... Figure 24 and Figure 25 ,in Figure 24 A schematic diagram illustrating an arrangement of an optical path reversing element according to the present invention in an image capturing system assembly is shown. Figure 25 A schematic diagram illustrating another configuration of an optical path reversing element according to the present invention in an image capturing system assembly is shown. Figure 24 and Figure 25 As shown, the image capturing system assembly can travel along the optical path from the subject (not shown) to the imaging plane IMG, and sequentially includes a first optical axis OA1, an optical path deflection element LF, and a second optical axis OA2, wherein the optical path deflection element LF can be configured as follows: Figure 24 The system shown is positioned between the lens group LG of the subject and the image capturing system assembly, or as... Figure 25 The image shown is positioned between the lens group LG and the imaging plane IMG of the image capturing system assembly. Please also refer to... Figure 26 A schematic diagram illustrating an arrangement of two optical path deflection elements according to the present invention in an image capturing system assembly is shown, such as... Figure 26 As shown, the image capturing system assembly can also travel along the optical path from the subject (not shown) to the imaging surface IMG, and sequentially includes a first optical axis OA1, a first optical path reversing element LF1, a second optical axis OA2, a second optical path reversing element LF2, and a third optical axis OA3. The first optical path reversing element LF1 is positioned between the subject and the lens group LG of the image capturing system assembly, and the second optical path reversing element LF2 is positioned between the lens group LG of the image capturing system assembly and the imaging surface IMG. Furthermore, the direction of light travel along the first optical axis OA1 can be as follows: Figure 26 The direction shown is the same as the direction of light travel along the third optical axis OA3. The image capturing system assembly may also be optionally configured with more than three optical path deflection elements. This invention is not limited to the type, number, and position of the optical path deflection elements disclosed in the accompanying drawings.

[0138] The image capturing system assembly disclosed in this invention may include at least one aperture stop, which may be located before the first lens, between the lenses, or after the last lens. The aperture stop may be of the type such as a glare stop or a field stop, and may be used to reduce stray light and help improve image quality.

[0139] In the image capturing system assembly disclosed in this invention, the aperture can be configured as 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 allows for a longer distance between the exit pupil and the imaging plane, resulting in a telecentric effect and increasing the efficiency of image reception by the CCD or CMOS sensor. A center aperture helps to expand the field of view of the image capturing system assembly.

[0140] This invention may appropriately incorporate a variable aperture element, which can be a mechanical component or a light-regulating element, and whose aperture size and shape can be controlled electrically or by electrical signals. The mechanical component may include movable parts such as a blade assembly or a shielding plate; the light-regulating element may include a filter element, an electrochromic material, a liquid crystal layer, or other shielding material. This variable aperture element can enhance image adjustment capabilities by controlling the amount of light entering the image or the exposure time. Furthermore, this variable aperture element can also be the aperture of this invention, allowing image quality, such as depth of field or exposure speed, to be adjusted by changing the aperture value.

[0141] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0142] <First Embodiment>

[0143] Please refer to Figures 1 to 2 ,in Figure 1 A schematic diagram of an image-capturing device according to a first embodiment of the present invention is shown. Figure 2 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the first embodiment. Figure 1 It is known that the image capturing device 1 includes an image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture stop S1, an aperture ST, a first lens E1, an aperture stop S2, a second lens E2, an aperture stop S3, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system assembly includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the lenses.

[0144] The first lens E1 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. Both of its surfaces are aspherical.

[0145] The second lens E2 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, and its object-side surface has a point of inflection.

[0146] The third lens E3 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 flat near the optical axis. Both of its surfaces are aspherical.

[0147] The fourth lens E4 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. Both of its surfaces are aspherical. Its object-side surface has a point of inflection, and its image-side surface also has a point of inflection.

[0148] 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 concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has three inflection points, and its image-side surface has two inflection points. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0149] The sixth lens 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. Its object-side surface has two inflection points, and its image-side surface has one inflection point. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0150] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging surface IMG. It does not affect the focal length of the image capturing system group.

[0151] The equations for the aspherical surfaces of the above lenses are expressed as follows:

[0152]

[0153] X: The displacement parallel to the optical axis from the intersection of the aspherical surface and the optical axis to a point on the aspherical surface at a distance Y from the optical axis;

[0154] Y: The perpendicular distance between a point on the aspherical curve and the optical axis;

[0155] R: Radius of curvature;

[0156] k: cone coefficient; and

[0157] Ai: The i-th order aspherical coefficient.

[0158] In the image capturing system group of the first embodiment, the focal length of the image capturing system group is f, the aperture value of the image capturing system group is Fno, and half of the maximum field of view in the image capturing system group is HFOV, with the following values: f = 2.80 mm, Fno = 1.98, HFOV = 55.1 degrees.

[0159] The Abbe number of the second lens E2 is V2, the Abbe number of the third lens E3 is V3, the Abbe number of the fourth lens E4 is V4, and the Abbe number of the fifth lens E5 is V5, which satisfies the following condition: (V2+V4) / (V3+V5)=2.96.

[0160] The Abbe number of the fourth lens E4 is V4, and the Abbe number of the fifth lens E5 is V5, which satisfies the following condition: V4 / V5 = 2.88.

[0161] The Abbe number of the fifth lens E5 is V5, and the Abbe number of the sixth lens E6 is V6, which satisfies the following condition: V5 + V6 = 56.9.

[0162] The Abbe number of the first lens E1 is V1, and the refractive index of the first lens E1 is N1, which satisfies the following condition: V1 / N1 = 36.30.

[0163] The Abbe number of the second lens E2 is V2, and the refractive index of the second lens E2 is N2, which satisfies the following condition: V2 / N2 = 36.26.

[0164] The Abbe number of the third lens E3 is V3, and the refractive index of the third lens E3 is N3, which satisfies the following condition: V3 / N3 = 10.90.

[0165] The Abbe number of the fourth lens E4 is V4, and the refractive index of the fourth lens E4 is N4, which satisfies the following condition: V4 / N4 = 36.26.

[0166] The Abbe number of the fifth lens E5 is V5, and the refractive index of the fifth lens E5 is N5, which satisfies the following condition: V5 / N5 = 11.65.

[0167] The Abbe number of the sixth lens E6 is V6, and the refractive index of the sixth lens E6 is N6, which satisfies the following condition: V6 / N6 = 23.91.

[0168] The thickness of the first lens E1 on the optical axis is CT1, the thickness of the second lens E2 on the optical axis is CT2, 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+CT2) / T12=4.26. 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.

[0169] The thickness of the third lens E3 on the optical axis is CT3, the thickness of the fourth lens E4 on the optical axis is CT4, and the distance between the third lens E3 and the fourth lens E4 on the optical axis is T34, which satisfies the following condition: (CT3+CT4) / T34=2.12.

[0170] The thickness of the fourth lens E4 on the optical axis is CT4, the thickness of the fifth lens E5 on the optical axis is CT5, the thickness of the sixth lens E6 on the optical axis is CT6, the distance between the fourth lens E4 and the fifth lens E5 on the optical axis is T45, and the distance between the fifth lens E5 and the sixth lens E6 on the optical axis is T56. They satisfy the following condition: (CT4+CT5+CT6) / (T45+T56)=22.90.

[0171] The distance on the optical axis from the object-side surface of the first lens E1 to the imaging plane IMG is TL, and the maximum imaging height of the image capturing system group is ImgH, which satisfies the following condition: TL / ImgH=1.57.

[0172] The radius of curvature of the object-side surface of the fourth lens E4 is R7, and the radius of curvature of the image-side surface of the fourth lens E4 is R8, which satisfies the following condition: (R7+R8) / (R7-R8)=3.34.

[0173] The radius of curvature of the object-side surface of the sixth lens E6 is R11, and the radius of curvature of the image-side surface of the sixth lens E6 is R12, which satisfies the following condition: (R11+R12) / (R11-R12)=11.20.

[0174] The radius of curvature of the object-side surface of the fifth lens E5 is R9, the radius of curvature of the image-side surface of the fifth lens E5 is R10, the radius of curvature of the object-side surface of the sixth lens E6 is R11, and the radius of curvature of the image-side surface of the sixth lens E6 is R12. They satisfy the following condition: |R11 / R9|+|R12 / R10|=0.21.

[0175] The radius of curvature of the image-side surface of the second lens E2 is R4, and the thickness of the second lens E2 on the optical axis is CT2, which satisfies the following condition: R4 / CT2=-3.29.

[0176] The radius of curvature of the object-side surface of the fourth lens E4 is R7, and the focal length of the fourth lens E4 is f4, which satisfies the following condition: R7 / f4=-0.62.

[0177] The focal length of the image capturing system group is f, and the radius of curvature of the object-side surface of the first lens E1 is R1, which satisfies the following condition: |f / R1|=0.15.

[0178] The focal length of the image capturing system group is f, the radius of curvature of the object-side surface of the first lens E1 is R1, and the radius of curvature of the image-side surface of the first lens E1 is R2, which satisfies the following condition: |f / R1|+|f / R2|=0.56.

[0179] The focal length of the first lens E1 is f1, the focal length of the second lens E2 is f2, and the focal length of the third lens E3 is f3. They satisfy the following condition: |f2 / f1|+|f2 / f3|=0.62.

[0180] The focal length of the image capturing system group is f, the focal length of the fifth lens E5 is f5, and the focal length of the sixth lens E6 is f6. They satisfy the following condition: f / f5 + f / f6 = -0.68.

[0181] The entrance pupil diameter of the image capturing system group is EPD, and the maximum effective radius of the object-side surface of the first lens E1 is Y11, which satisfies the following condition: EPD / Y11=1.99.

[0182] Half of the maximum field of view in the image capturing system group is HFOV. The maximum effective radius of the object-side surface of the first lens E1 is Y11, and the maximum effective radius of the image-side surface of the sixth lens E6 is Y62. They satisfy the following condition: tan(HFOV)×Y62 / Y11=5.22.

[0183] The maximum effective radius of the object-side surface of the first lens E1 is Y11, and the maximum effective radius of the image-side surface of the sixth lens E6 is Y62, which satisfies the following condition: Y62 / Y11=3.64.

[0184] The aperture radius of the aperture ST is YS, and the maximum effective radius of the object-side surface of the first lens E1 is Y11, which satisfies the following condition: YS / Y11=0.99.

[0185] The vertical distance between the concave critical point on the object-side surface of the fifth lens E5 and the optical axis is Yc51, and the vertical distance between the convex critical point on the image-side surface of the fifth lens E5 and the optical axis is Yc52. They satisfy the following condition: Yc52 / Yc51=1.09.

[0186] The vertical distance between the concave critical point on the object-side surface of the sixth lens E6 and the optical axis is Yc61, and the vertical distance between the convex critical point on the image-side surface of the sixth lens E6 and the optical axis is Yc62. They satisfy the following condition: Yc62 / Yc61=1.47.

[0187] Please refer to Table 1 and Table 2 below.

[0188]

[0189]

[0190] Table 1 is... Figure 1 The first embodiment provides detailed structural data, where the units for radius of curvature, thickness, and focal length are millimeters (mm), and surfaces 0 to 19 sequentially represent surfaces from the object side to the image side. Table 2 shows the aspherical data in the first embodiment, where k is the cone coefficient in the aspherical curve equation, and A4 to A30 represent the 4th to 30th order aspherical coefficients of each surface. Furthermore, the tables for the following embodiments are corresponding schematic diagrams and aberration curves for each embodiment. The definitions of the data in the tables are the same as those in Tables 1 and 2 of the first embodiment, and will not be repeated here.

[0191] <Second Embodiment>

[0192] Please refer to Figures 3 to 4 ,in Figure 3 A schematic diagram of an image-capturing device according to a second embodiment of the present invention is shown. Figure 4 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the second embodiment. Figure 3 It is known that the image capturing device 2 includes an image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture stop S1, an aperture ST, a first lens E1, an aperture stop S2, a second lens E2, an aperture stop S3, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system assembly includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the lenses.

[0193] 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 convex near the optical axis. Both surfaces are aspherical, and its object-side surface has a point of inflection.

[0194] The second lens E2 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, and its object-side surface has a point of inflection.

[0195] The third lens E3 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. Both surfaces are aspherical, and its image-side surface has two inflection points.

[0196] The fourth lens E4 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. Both of its surfaces are aspherical. Its object-side surface has a point of inflection, and its image-side surface also has a point of inflection.

[0197] 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 surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has two inflection points. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0198] 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 surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has two inflection points. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0199] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging surface IMG. It does not affect the focal length of the image capturing system group.

[0200] Please refer to Table 3 and Table 4 below.

[0201]

[0202]

[0203]

[0204] In the second embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0205]

[0206]

[0207] <Third Embodiment>

[0208] Please refer to Figures 5 to 6 ,in Figure 5 A schematic diagram of an image-capturing device according to a third embodiment of the present invention is shown. Figure 6 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the third embodiment. Figure 5It is known that the image capturing device 3 includes an image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture stop S1, an diaphragm ST, a first lens E1, an aperture stop S2, a second lens E2, an aperture stop S3, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system assembly includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the lenses.

[0209] The first lens E1 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. Both of its surfaces are aspherical.

[0210] The second lens E2 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, and its object-side surface has a point of inflection.

[0211] The third lens E3 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 of its surfaces are aspherical.

[0212] The fourth lens E4 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. Both of its surfaces are aspherical. Its object-side surface has a point of inflection, and its image-side surface also has a point of inflection.

[0213] The fifth lens E5 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. Its object-side surface has one inflection point, and its image-side surface has two inflection points. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0214] 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 surfaces are aspherical. Its object-side surface has four inflection points, its image-side surface has one inflection point, its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0215] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging surface IMG. It does not affect the focal length of the image capturing system group.

[0216] Please refer to Table 5 and Table 6 below.

[0217]

[0218]

[0219]

[0220] In the third embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0221]

[0222]

[0223] <Fourth Embodiment>

[0224] Please refer to Figures 7 to 8 ,in Figure 7 A schematic diagram of an image-capturing device according to a fourth embodiment of the present invention is shown. Figure 8 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fourth embodiment. Figure 7 It is known that the image capturing device 4 includes an image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture stop S1, an diaphragm ST, a first lens E1, an aperture stop S2, a second lens E2, an aperture stop S3, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system assembly includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the lenses.

[0225] The first lens E1 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. Both of its surfaces are aspherical.

[0226] The second lens E2 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, and its object-side surface has a point of inflection.

[0227] The third lens E3 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 concave near the optical axis. Both of its surfaces are aspherical, and its image-side surface has a point of inflection.

[0228] The fourth lens E4 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. Both of its surfaces are aspherical. Its object-side surface has a point of inflection, and its image-side surface also has a point of inflection.

[0229] 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 surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has two inflection points. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0230] 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 surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has one inflection point. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0231] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging surface IMG. It does not affect the focal length of the image capturing system group.

[0232] Please refer to Tables 7 and 8 below.

[0233]

[0234]

[0235]

[0236] In the fourth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0237]

[0238] <Fifth Embodiment>

[0239] Please refer to Figures 9 to 10 ,in Figure 9 A schematic diagram of an image-capturing device according to a fifth embodiment of the present invention is shown. Figure 10 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fifth embodiment. Figure 9It is known that the image capturing device 5 includes an image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture stop S1, an diaphragm ST, a first lens E1, an aperture stop S2, a second lens E2, an aperture stop S3, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system assembly includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the lenses.

[0240] 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 convex near the optical axis. Both surfaces are aspherical, and its object-side surface has a point of inflection.

[0241] The second lens E2 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, and its object-side surface has a point of inflection.

[0242] The third lens E3 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 of its surfaces are aspherical.

[0243] The fourth lens E4 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. Both of its surfaces are aspherical. Its object-side surface has a point of inflection, and its image-side surface also has a point of inflection.

[0244] 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 of its surfaces are aspherical. Its object-side surface has three inflection points, and its image-side surface has three inflection points. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0245] 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 surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has two inflection points. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0246] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging surface IMG. It does not affect the focal length of the image capturing system group.

[0247] Please refer to Tables 9 and 10 below.

[0248]

[0249]

[0250]

[0251]

[0252] In the fifth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0253]

[0254] <Sixth Embodiment>

[0255] Please refer to Figures 11 to 12 ,in Figure 11 A schematic diagram of an image-capturing device according to a sixth embodiment of the present invention is shown. Figure 12 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the sixth embodiment. Figure 11 It is known that the image capturing device 6 includes an image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture stop S1, an diaphragm ST, a first lens E1, an aperture stop S2, a second lens E2, an aperture stop S3, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system assembly includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the lenses.

[0256] The first lens E1 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. Both of its surfaces are aspherical.

[0257] The second lens E2 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 of its surfaces are aspherical, and its object-side surface has a point of inflection.

[0258] The third lens E3 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 of its surfaces are aspherical.

[0259] The fourth lens E4 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. Both of its surfaces are aspherical. Its object-side surface has a point of inflection, and its image-side surface also has a point of inflection.

[0260] 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 surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has three inflection points. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0261] 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 surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has one inflection point. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0262] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging surface IMG. It does not affect the focal length of the image capturing system group.

[0263] Please refer to Table 11 and Table 12 below.

[0264]

[0265]

[0266]

[0267]

[0268] In the sixth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0269]

[0270] <Seventh Embodiment>

[0271] Please refer to Figures 13 to 14 ,in Figure 13 A schematic diagram of an image-capturing device according to a seventh embodiment of the present invention is shown. Figure 14 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the seventh embodiment. Figure 13It is known that the image capturing device 7 includes an image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture stop S1, an diaphragm ST, a first lens E1, a second lens E2, an aperture stop S2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system assembly includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the lenses.

[0272] The first lens E1 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 concave near the optical axis. Both of its surfaces are aspherical, and its image-side surface has a point of inflection.

[0273] The second lens E2 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 of its surfaces are aspherical.

[0274] The third lens E3 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 concave near the optical axis. Both of its surfaces are aspherical, and its image-side surface has a point of inflection.

[0275] The fourth lens E4 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. Both of its surfaces are aspherical. Its object-side surface has a point of inflection, and its image-side surface also has a point of inflection.

[0276] 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 concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has three inflection points, and its image-side surface has four inflection points. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0277] 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 surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has one inflection point. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0278] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging surface IMG. It does not affect the focal length of the image capturing system group.

[0279] Please refer to Tables 13 and 14 below.

[0280]

[0281]

[0282]

[0283]

[0284] In the seventh embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0285]

[0286] <Eighth Embodiment>

[0287] Please refer to Figures 15 to 16 ,in Figure 15 A schematic diagram of an image-capturing device according to an eighth embodiment of the present invention is shown. Figure 16 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eighth embodiment. Figure 15 It is known that the image capturing device 8 includes an image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture stop S1, an diaphragm ST, a first lens E1, an aperture stop S2, a second lens E2, an aperture stop S3, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The image capturing system assembly includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the lenses.

[0288] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is flat near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical.

[0289] The second lens E2 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. Both of its surfaces are aspherical.

[0290] The third lens E3 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 of its surfaces are aspherical. Its object-side surface has a point of inflection, and its image-side surface also has a point of inflection.

[0291] The fourth lens E4 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. Both of its surfaces are aspherical. Its object-side surface has a point of inflection, and its image-side surface also has a point of inflection.

[0292] The fifth lens E5 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 of its surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has four inflection points. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0293] 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 surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has two inflection points. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0294] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging surface IMG. It does not affect the focal length of the image capturing system group.

[0295] Please refer to Tables 15 and 16 below.

[0296]

[0297]

[0298]

[0299]

[0300] In the eighth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0301]

[0302] <Ninth Embodiment>

[0303] Please refer to Figure 17This diagram illustrates a perspective view of an image-capturing device according to a ninth embodiment of the present invention. In this embodiment, the image-capturing device 100 is a camera module. The image-capturing device 100 includes an imaging lens 101, a driving device 102, an electronic photosensitive element 103, and an image stabilization module 104. The imaging lens 101 includes the image capturing system group described in the first embodiment, a lens barrel (not otherwise labeled) for carrying the image capturing system group, and a support device (Holder Member, not otherwise labeled). The imaging lens 101 can also be configured with the image capturing system group of other embodiments described above, and the present invention is not limited thereto. The image-capturing device 100 uses the imaging lens 101 to focus light to generate an image, and cooperates with the driving device 102 to focus the image, finally imaging it on the electronic photosensitive element 103 and outputting it as image data.

[0304] The driving device 102 may have an auto-focus function, and its driving method can use a driving system such as a voice coil motor (VCM), micro-electro-mechanical systems (MEMS), piezoelectric systems, and shape memory alloys. The driving device 102 enables the imaging lens 101 to achieve a better imaging position, allowing clear images to be captured of the subject at different object distances. In addition, the image capturing device 100 is equipped with a high-sensitivity and low-noise electronic image sensor 103 (such as CMOS or CCD) located on the imaging surface of the image capturing system assembly, which can truly present the good image quality of the image capturing system assembly.

[0305] The image stabilization module 104 may be, for example, an accelerometer, a gyroscope, or a Hall effect sensor. The drive unit 102 may work in conjunction with the image stabilization module 104 to form an optical image stabilization (OIS) device. By adjusting the changes in different axes of the imaging lens 101, it can compensate for the blurry image caused by shaking during shooting, or use image compensation technology in the imaging software to provide electronic image stabilization (EIS) function, further improving the image quality of shooting in dynamic and low-light scenes.

[0306] <Tenth Embodiment>

[0307] Please refer to Figures 18 to 20 ,in Figure 18 A perspective view of one side of an electronic device according to a tenth embodiment of the present invention is shown. Figure 19 Draw Figure 18A three-dimensional diagram of the other side of the electronic device, and Figure 20 Draw Figure 18 System block diagram of an electronic device.

[0308] In this embodiment, the electronic device 200 is a smartphone. The electronic device 200 includes, according to the ninth embodiment, image capturing devices 100, 100a, 100b, 100c, and 100d, a flash module 201, a focus assist module 202, an image signal processor 203, a display module 204, and an image software processor 205. Image capturing devices 100 and 100a are both located on the same side of the electronic device 200 and are both single-focus. The focus assist module 202 may employ a laser rangefinder or a Time-of-Flight (ToF) module, but the present invention is not limited thereto. Image capturing devices 100b, 100c, and 100d, along with display module 204, are all located on the other side of electronic device 200. Display module 204 can serve as a user interface, allowing image capturing devices 100b, 100c, and 100d to function as front-facing cameras for selfies; however, this invention is not limited to this. Furthermore, image capturing devices 100a, 100b, 100c, and 100d can all include the image capturing system assembly of this invention and can all have a similar structural configuration to image capturing device 100. Specifically, each of image capturing devices 100a, 100b, 100c, and 100d can include an imaging lens, a driving device, an electronic photosensitive element, and an image stabilization module. The imaging lenses of imaging devices 100a, 100b, 100c and 100d may each include, for example, an optical lens group of the image capturing system group of the present invention, a lens barrel for carrying the optical lens group and a support device.

[0309] Image capturing device 100 is a wide-angle image capturing device, image capturing device 100a is an ultra-wide-angle image capturing device, image capturing device 100b is a wide-angle image capturing device, image capturing device 100c is an ultra-wide-angle image capturing device, and image capturing device 100d is a time-of-flight ranging image capturing device. In this embodiment, image capturing devices 100 and 100a have different viewing angles, allowing the electronic device 200 to provide different magnifications to achieve optical zoom shooting effects. Additionally, image capturing device 100d can acquire depth information of the image. The above-described electronic device 200 is exemplified by including multiple image capturing devices 100, 100a, 100b, 100c, and 100d, but the number and configuration of the image capturing devices are not intended to limit the invention.

[0310] When the user photographs the subject 206, the electronic device 200 uses the image capturing device 100 or image capturing device 100a to focus the light, activates the flash module 201 for supplemental lighting, and uses the subject distance information of the subject 206 provided by the focus assist module 202 for fast focusing. Furthermore, the image signal processor 203 performs image optimization processing to further improve the image quality produced by the image capturing system. The focus assist module 202 can use an infrared or laser focus assist system to achieve fast focusing. In addition, the electronic device 200 can also use the image capturing devices 100b, 100c, or 100d for shooting. The display module 204 can use a touch screen, combined with the diverse functions of the image software processor 205 for image capturing and image processing (or can use a physical shooting button). The image processed by the image software processor 205 can be displayed on the display module 204.

[0311] <Eleventh Embodiment>

[0312] Please refer to Figure 21 A perspective view of one side of an electronic device according to the eleventh embodiment of the present invention is shown.

[0313] In this embodiment, the electronic device 300 is a smartphone. The electronic device 300 includes, according to the ninth embodiment, an image capturing device 100, an image capturing device 100e, an image capturing device 100f, a flash module 301, a focus assist module, an image signal processor, a display module, and an image software processor (not shown). Image capturing devices 100, 100e, and 100f are all located on the same side of the electronic device 300, while the display module is located on the other side. Furthermore, image capturing devices 100e and 100f can both include the image capturing system assembly of the present invention and can both have a similar structural configuration to image capturing device 100, which will not be described in detail here.

[0314] Image capturing device 100 is a wide-angle image capturing device, image capturing device 100e is a telephoto image capturing device, and image capturing device 100f is an ultra-wide-angle image capturing device. In this embodiment, image capturing devices 100, 100e, and 100f have different viewing angles, allowing the electronic device 300 to provide different magnifications to achieve optical zoom shooting effects. Furthermore, image capturing device 100e is a telephoto image capturing device with an optical path deflection element configuration, so that the total length of image capturing device 100e is not limited by the thickness of the electronic device 300. The optical path deflection element configuration of image capturing device 100e can, for example, have a similar... Figures 24 to 26 The structure can be referred to the aforementioned corresponding structure. Figures 24 to 26The description of the above-described electronic device 300 is given as an example, which includes multiple image capturing devices 100, 100e, and 100f, but the number and configuration of the image capturing devices are not intended to limit the present invention. When a user photographs a subject, the electronic device 300 uses image capturing device 100, image capturing device 100e, or image capturing device 100f to focus the light and capture the image, activates the flash module 301 to provide supplementary lighting, and performs subsequent processing in a manner similar to the aforementioned embodiments, which will not be described in detail here.

[0315] <Twelfth Embodiment>

[0316] Please refer to Figure 22 A perspective view of one side of an electronic device according to the twelfth embodiment of the present invention is shown.

[0317] In this embodiment, the electronic device 400 is a smartphone. The electronic device 400 includes, according to the ninth embodiment, image capturing devices 100g, 100h, 100i, 100j, 100k, 100m, 100n, and 100p, a flash module 401, a focus assist module, an image signal processor, a display module, and an image software processor (not shown). Image capturing devices 100g, 100h, 100i, 100j, 100k, 100m, 100n, and 100p are all located on the same side of the electronic device 400, while the display module is located on the other side of the electronic device 400. Furthermore, the image capturing devices 100g, 100h, 100i, 100j, 100k, 100m, 100n, and 100p can all include the image capturing system group of the present invention and can all have a structural configuration similar to that of the image capturing device 100, which will not be described in detail here.

[0318] Image capturing device 100 is a wide-angle image capturing device, image capturing device 100g is a telephoto image capturing device, image capturing device 100h is a telephoto image capturing device, image capturing device 100i is a wide-angle image capturing device, image capturing device 100j is an ultra-wide-angle image capturing device, image capturing device 100k is an ultra-wide-angle image capturing device, image capturing device 100m is a telephoto image capturing device, image capturing device 100n is a telephoto image capturing device, and image capturing device 100p is a time-of-flight ranging image capturing device. In this embodiment, image capturing devices 100, 100g, 100h, 100i, 100j, 100k, 100m, and 100n have different viewing angles, allowing the electronic device 400 to provide different magnifications to achieve an optical zoom shooting effect. Furthermore, the image capturing device 100g and the image capturing device 100h can be telescopic image capturing devices configured with optical path deflection elements. The optical path deflection element configuration of the image capturing device 100g and the image capturing device 100h can, for example, have a similar... Figures 24 to 26 The structure can be referred to the aforementioned corresponding structure. Figures 24 to 26 The description of the image acquisition device 100p will not be repeated here. Additionally, the image acquisition device 100p can acquire depth information of the image. The electronic device 400 described above is exemplified by including multiple image acquisition devices 100, 100g, 100h, 100i, 100j, 100k, 100m, 100n, and 100p, but the number and configuration of the image acquisition devices are not intended to limit the invention. When a user photographs a subject, the electronic device 400 uses image acquisition devices 100, 100g, 100h, 100i, 100j, 100k, 100m, 100n, or 100p to focus light and acquire an image, activates the flash module 401 for supplemental lighting, and performs subsequent processing in a manner similar to the aforementioned embodiments, which will not be repeated here.

[0319] The image capturing device of the present invention is not limited to application in smartphones. It can also be applied to mobile focusing systems as needed, and features excellent aberration correction and good image quality. For example, the image capturing device can be widely used in electronic devices such as 3D image capture, digital cameras, mobile devices, tablet computers, smart TVs, network monitoring equipment, dashcams, reversing cameras, multi-lens devices, recognition systems, motion-sensing game consoles, and wearable devices. The aforementioned electronic devices are merely illustrative examples of practical applications of the present invention and do not limit the scope of application of the image capturing device of the present invention.

[0320] Although the present invention has been disclosed above with reference to the preferred embodiments described above, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be determined by the claims of this specification.

Claims

1. An image capturing system, comprising: The six lenses sequentially include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens along an optical path from an object side to an image side, and each of the six lenses has an object side surface facing the object side direction and an image side surface facing the image side direction; Wherein, the total number of lenses in the image capturing system group is six, the second lens image side surface is convex at the vicinity of the optical axis, the fourth lens has positive refractive power, the fourth lens object side surface is concave at the vicinity of the optical axis, the fourth lens image side surface is convex at the vicinity of the optical axis, the sixth lens object side surface is convex at the vicinity of the optical axis, the sixth lens image side surface is concave at the vicinity of the optical axis, and at least one surface of the object side surface and the image side surface of at least one lens in the image capturing system group has at least one inflection point; Wherein, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, the interval distance of the first lens and the second lens on the optical axis is T12, the interval distance of the third lens and the fourth lens on the optical axis is T34, half of the maximum viewing angle of the image capturing system group is HFOV, and the radius of curvature of the second lens image side surface is R4, which satisfy the following conditions: 1.7 < V4 / V5 < 6.0; 3.5 < (CT1+CT2) / T12 < 9.0; (CT3+CT4) / T34 < 6.5; 54.5 degrees < HFOV < 70.0 degrees; and -7.0 < R4 / CT2 < -1.

6.

2. The image capturing system set of claim 1, wherein The Abbe number of the fourth lens is V4, and the Abbe number of the fifth lens is V5, which satisfy the following conditions: 2.2 < V4 / V5 < 5.

5.

3. The image capture system set of claim 1, wherein The thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, and the interval distance of the first lens and the second lens on the optical axis is T12, which satisfy the following conditions: 4.0 < (CT1+CT2) / T12 < 7.

0.

4. The image capturing system set of claim 1, wherein The thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, the interval distance of the third lens and the fourth lens on the optical axis is T34, and the radius of curvature of the second lens image side surface is R4, which satisfy the following conditions: 1.0 < (CT3+CT4) / T34 < 6.0; and -6.0 < R4 / CT2 < -1.

9.

5. The image capture system set of claim 1, wherein The Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, and the Abbe number of the fifth lens is V5, which satisfy the following conditions: 2.8 < (V2+V4) / (V3+V5) < 6.

0.

6. The image capturing system set of claim 1, wherein A distance on the optical axis from the first lens object side surface to an image plane is TL, a maximum image height of the image capturing system group is ImgH, an entrance pupil diameter of the image capturing system group is EPD, a maximum effective radius of the first lens object side surface is Y11, and the following conditions are satisfied: 1.0 < TL / ImgH < 2.0; and 1.8 < EPD / Y11 < 2.

2.

7. The image capturing system set of claim 1, wherein A curvature radius of the sixth lens object side surface is R11, a curvature radius of the sixth lens image side surface is R12, a focal length of the image capturing system group is f, a focal length of the fifth lens is f5, and a focal length of the sixth lens is f6, and the following conditions are satisfied: 2.0 < (R11+R12) / (R11-R12); and -2.0 < f / f5+f / f6 < 0.

8. The image capture system set of claim 1, wherein, A curvature radius of the fifth lens object side surface is R9, a curvature radius of the fifth lens image side surface is R10, a curvature radius of the sixth lens object side surface is R11, and a curvature radius of the sixth lens image side surface is R12, and the following condition is satisfied: |R11 / R9|+|R12 / R10| < 0.

50.

9. The image capture system set of claim 1, wherein, A perpendicular distance between a concave critical point of the sixth lens object side surface and the optical axis is Yc61, a perpendicular distance between a convex critical point of the sixth lens image side surface and the optical axis is Yc62, and the following condition is satisfied: 1.0 < Yc62 / Yc61 < 2.

0.

10. An image capture system comprising: An image capturing system group includes six lenses, which are sequentially arranged along an optical path from an object side to an image side as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, and the six lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction; wherein the total number of lenses in the image capturing system group is six, the second lens has positive refractive power, the second lens image side surface is convex near the optical axis, the fourth lens has positive refractive power, the fourth lens object side surface is concave near the optical axis, the fourth lens image side surface is convex near the optical axis, the sixth lens image side surface is concave near the optical axis, and at least one lens in the image capturing system group has at least one inflection point on at least one of the object side surface and the image side surface. wherein an Abbe number of the fourth lens is V4, an Abbe number of the fifth lens is V5, a thickness of the first lens on the optical axis is CT1, a thickness of the second lens on the optical axis is CT2, a thickness of the third lens on the optical axis is CT3, a thickness of the fourth lens on the optical axis is CT4, a separation distance of the first lens and the second lens on the optical axis is T12, a separation distance of the third lens and the fourth lens on the optical axis is T34, a half of a maximum view angle of the image capturing system group is HFOV, a focal length of the image capturing system group is f, a radius of curvature of a subject side surface of the first lens is R1, and a radius of curvature of an image side surface of the first lens is R2, and the following conditions are satisfied: 1.2 < V4 / V5 < 7.0; 3.0 < (CT1+CT2) / T12 < 8.0; (CT3+CT4) / T34 < 5.5; 52.0 degrees < HFOV < 80.0 degrees; and |f / R1| + |f / R2| < 0.

90.

11. The image capture system set of claim 10, wherein, an Abbe number of the fourth lens is V4, and an Abbe number of the fifth lens is V5, and the following conditions are satisfied: 1.7 < V4 / V5 < 6.0; wherein an Abbe number of the first lens is V1, an Abbe number of the second lens is V2, an Abbe number of the third lens is V3, an Abbe number of the sixth lens is V6, an Abbe number of the i-th lens is Vi, a refractive index of the first lens is N1, a refractive index of the second lens is N2, a refractive index of the third lens is N3, a refractive index of the fourth lens is N4, a refractive index of the fifth lens is N5, a refractive index of the sixth lens is N6, and a refractive index of the i-th lens is Ni, and at least one lens of the image capturing system group satisfies the following condition: 5.0 < Vi / Ni < 11, where i = 1, 2, 3, 4, 5, 6.

12. The image capturing system set of claim 10, wherein a thickness of the first lens on the optical axis is CT1, a thickness of the second lens on the optical axis is CT2, a separation distance of the first lens and the second lens on the optical axis is T12, a focal length of the image capturing system group is f, a radius of curvature of a subject side surface of the first lens is R1, and a radius of curvature of an image side surface of the first lens is R2, and the following conditions are satisfied: 4.0 < (CT1+CT2) / T12 < 7.0; and |f / R1| + |f / R2| < 0.

70.

13. The image capture system set of claim 10, wherein a thickness of the third lens on the optical axis is CT3, a thickness of the fourth lens on the optical axis is CT4, a thickness of the fifth lens on the optical axis is CT5, a thickness of the sixth lens on the optical axis is CT6, a separation distance of the third lens and the fourth lens on the optical axis is T34, a separation distance of the fourth lens and the fifth lens on the optical axis is T45, and a separation distance of the fifth lens and the sixth lens on the optical axis is T56, and the following conditions are satisfied: 1.7 < (CT3+CT4) / T34 < 5.0; and 3.3 < (CT4+CT5+CT6) / (T45+T56) < 50.

14. The image capturing system set of claim 10, wherein, a half of a maximum view angle in the image capturing system is HFOV, an aperture value of the image capturing system is Fno, and the image capturing system satisfies the following conditions: 54.5 degrees < HFOV < 70.0 degrees; and 1.4 < Fno < 2.

4.

15. The image capture system set of claim 10, wherein, a half of a maximum view angle in the image capturing system is HFOV, a maximum effective radius of the first lens object side surface is Y11, and a maximum effective radius of the sixth lens image side surface is Y62, and the image capturing system satisfies the following condition: 5.0 < tan(HFOV) x Y62 / Y11.

16. The image capture system set of claim 10, wherein, a radius of curvature of the fourth lens object side surface is R7, and a focal length of the fourth lens is f4, and the image capturing system satisfies the following condition: -1.3 < R7 / f4 < -0.

40.

17. The image capture system set of claim 10, wherein, a perpendicular distance between a concave critical point of the fifth lens object side surface and an optical axis is Yc51, a perpendicular distance between a convex critical point of the fifth lens image side surface and the optical axis is Yc52, the fifth lens object side surface has at least one concave critical point at an off-axis position, the fifth lens image side surface has at least one convex critical point at an off-axis position, and the image capturing system satisfies the following condition: 0.70 < Yc52 / Yc51 < 1.

4.

18. An image pickup device, characterized by comprising: comprising: the image capturing system according to claim 10; and an electronic photosensitive element disposed on an imaging surface of the image capturing system.

19. An electronic device, comprising: comprising: the image capturing apparatus according to claim 18.

20. An image capture system comprising: comprising six lenses, which are sequentially arranged along an optical path from an object side to an image side as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, and each of the six lenses has an object side surface facing the object side direction and an image side surface facing the image side direction; wherein a total number of lenses in the image capturing system is six, the second lens has positive refractive power, the fourth lens has positive refractive power, the fourth lens object side surface is concave near an optical axis, the fourth lens image side surface is convex near the optical axis, the sixth lens object side surface is convex near the optical axis, and at least one of the lenses in the image capturing system has at least one inflection point on at least one of the object side surface and the image side surface; wherein an Abbe number of the fourth lens is V4, an Abbe number of the fifth lens is V5, a thickness of the first lens on the optical axis is CT1, a thickness of the second lens on the optical axis is CT2, a thickness of the third lens on the optical axis is CT3, a thickness of the fourth lens on the optical axis is CT4, a separation distance between the first lens and the second lens on the optical axis is T12, a separation distance between the third lens and the fourth lens on the optical axis is T34, a half of a maximum view angle in the image capturing system is HFOV, a focal length of the image capturing system is f, a focal length of the first lens is f1, a focal length of the second lens is f2, a focal length of the third lens is f3, and a radius of curvature of the first lens object side surface is R1, and the image capturing system satisfies the following conditions: 1.2 < V4 / V5 < 7.0; 3.5 < (CT1+CT2) / T12 < 9.0; (CT3+CT4) / T34 < 5.0; 52.0 degrees < HFOV < 80.0 degrees; |f / R1| < 0.90; and |f2 / f1| + |f2 / f3| < 1.

0.

21. The image capture system set of claim 20, wherein, the Abbe number of the fourth lens is V4 and the Abbe number of the fifth lens is V5, which satisfy the following condition: 1.7 < V4 / V5 < 6.

0.

22. The image capture system set of claim 20, wherein, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, and the interval distance of the first lens and the second lens on the optical axis is T12, which satisfy the following condition: 4.0 < (CT1+CT2) / T12 < 7.

0.

23. The image capture system set of claim 20, wherein the thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, the interval distance of the third lens and the fourth lens on the optical axis is T34, the Abbe number of the fifth lens is V5, and the Abbe number of the sixth lens is V6, which satisfy the following conditions: 2.0 < (CT3+CT4) / T34 < 4.5; and 20.0 < V5+V6 < 65.

0.

24. The image capture system set of claim 20, wherein, the half of the maximum view angle of the image capturing system set is HFOV, the focal length of the image capturing system set is f, and the radius of curvature of the object side surface of the first lens is R1, which satisfy the following conditions: 54.5 degrees < HFOV < 70.0 degrees; and |f / R1| < 0.

75.

25. The image capture system set of claim 24, wherein, further comprising an aperture, wherein the maximum effective radius of the object side surface of the first lens is Y11, the maximum effective radius of the image side surface of the sixth lens is Y62, and the aperture radius of the aperture is YS, which satisfy the following conditions: 3.4 < Y62 / Y11 < 5.0; and 0.90 < YS / Y11 < 1.

1.

26. The image capture system set of claim 20, wherein, the focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the third lens is f3, which satisfy the following condition: |f2 / f1| + |f2 / f3| < 0.

70.

27. The image capture system set of claim 20, wherein, at least one of the object side surface and the image side surface of each lens in the image capturing system set has at least one inflection point; wherein the radius of curvature of the object side surface of the fourth lens is R7 and the radius of curvature of the image side surface of the fourth lens is R8, which satisfy the following condition: 1.0 < (R7+R8) / (R7-R8) < 6.0.

Images