Optical image capturing lens, image capturing device and electronic device

Abstract

The invention discloses an optical image capturing lens, an image capturing device and an electronic device. The optical image capturing lens comprises five lenses. The five lenses are sequentially a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object side to the image side along an optical path. Each of the five lenses has an object-side surface facing the object-side direction and an image-side surface facing the image-side direction. The first lens element has an image-side surface being concave in a paraxial region thereof. The second lens element has an object-side surface being concave in a paraxial region thereof. The third lens element has an object-side surface being concave in a paraxial region thereof. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. At least one surface of at least one lens in the optical image capturing lens has at least one critical point at an off-axis position. When specific conditions are met, the optical image capturing lens can meet the requirements of wide viewing angle, miniaturization and high imaging quality at the same time. The image capturing device is provided with an optical image capturing lens, and the electronic device is provided with the image capturing device.

Description

Technical Field

[0001] The present disclosure relates to an optical imaging lens, an imaging device, and an electronic device, and particularly to an optical imaging lens and an imaging device suitable for an electronic device. Background Art

[0002] With the continuous improvement of semiconductor process technology, the performance of electronic photosensitive elements has been improved, and the pixel size can reach a smaller size. Therefore, an optical lens with high imaging quality has become an indispensable part.

[0003] With the rapid development of technology, the application scope of electronic devices equipped with optical lenses is more extensive, and the requirements for optical lenses are also more diverse. Since it is difficult for conventional optical lenses to balance the requirements of imaging quality, sensitivity, aperture size, volume, or viewing angle, the present disclosure provides an optical lens to meet the requirements. Summary of the Invention

[0004] The present disclosure provides an optical imaging lens, an imaging device, and an electronic device. Among them, the optical imaging lens includes five lenses arranged in sequence from the object side to the image side along the optical path. When specific conditions are met, the optical imaging lens provided by the present disclosure can simultaneously meet the requirements of wide viewing angle, miniaturization, and high imaging quality.

[0005] The present disclosure provides an optical imaging lens, including five lenses. The five lenses are, in sequence from the object side to the image side along the optical path, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction. Preferably, the first lens has a positive refractive power. Preferably, the object side surface of the first lens is convex near the optical axis. Preferably, the image side surface of the first lens is concave near the optical axis. Preferably, the object side surface of the second lens is concave near the optical axis. Preferably, the object side surface of the third lens is concave near the optical axis. Preferably, the fourth lens has a positive refractive power. Preferably, the object side surface of the fourth lens is convex near the optical axis. Preferably, the image side surface of the fourth lens is concave near the optical axis. Preferably, the object side surface of the fifth lens is convex near the optical axis. Preferably, at least one surface of at least one lens in the optical imaging lens has at least one critical point at the off-axis position. The radius of curvature of the image side surface of the first lens is R2, the radius of curvature of the object side surface of the second lens is R3, the radius of curvature of the object side surface of the third lens is R5, and the thickness of the third lens on the optical axis is CT3, which preferably satisfies the following conditions:

[0006] R3 / R2 < -1.1; and

[0007] -25 < R5 / CT3 < -5.0.

[0008] The present disclosure further provides an optical imaging lens, which includes five lenses. The five 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, and a fifth lens. The five lenses respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction. Preferably, the image-side surface of the first lens is concave near the optical axis. Preferably, the object-side surface of the second lens is concave near the optical axis. Preferably, the object-side surface of the third lens is concave near the optical axis. Preferably, the fourth lens has a positive refractive power. Preferably, the object-side surface of the fourth lens is convex near the optical axis. Preferably, the image-side surface of the fourth lens is concave near the optical axis. Preferably, the image-side surface of the fifth lens is concave near the optical axis. Preferably, at least one surface of at least one lens in the optical imaging lens has at least one critical point off the axis. The radius of curvature of the image-side surface of the first lens is R2, the radius of curvature of the object-side surface of the second lens is R3, the radius of curvature of the object-side surface of the third lens is R5, and the thickness of the third lens on the optical axis is CT3, which preferably satisfies the following conditions:

[0009] R3 / R2 < -1.1; and

[0010] -16 < R5 / CT3 < -5.0.

[0011] The present disclosure provides an imaging device, which includes the foregoing optical imaging lens and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the optical imaging lens.

[0012] The present disclosure provides an electronic device, which includes the foregoing imaging device.

[0013] When R3 / R2 satisfies the above conditions, the surface shapes of the first lens and the second lens can be cooperated with each other to correct aberrations.

[0014] When R5 / CT3 satisfies the above conditions, the surface shape of the third lens can be adjusted, which helps to balance the volume distribution of the object side end and the image side end of the optical imaging lens.

[0015] The above description of the content of the present disclosure and the following description of the embodiments are used to demonstrate and explain the spirit and principle of the present disclosure, and provide a further explanation of the claims of the present disclosure. Description of the Drawings

[0016] Figure 1 Schematic diagram of an imaging device according to a first embodiment of the present disclosure.

[0017] Figure 2 From left to right are the spherical aberration, astigmatism, and distortion curves of the first embodiment.

[0018] Figure 3 Schematic diagram of an imaging device according to a second embodiment of the present disclosure.

[0019] Figure 4 From left to right are the spherical aberration, astigmatism, and distortion curves of the second embodiment in sequence.

[0020] Figure 5 Schematic diagram of an imaging device according to the third embodiment of the present disclosure is shown.

[0021] Figure 6 From left to right are the spherical aberration, astigmatism, and distortion curves of the third embodiment in sequence.

[0022] Figure 7 Schematic diagram of an imaging device according to the fourth embodiment of the present disclosure is shown.

[0023] Figure 8 From left to right are the spherical aberration, astigmatism, and distortion curves of the fourth embodiment in sequence.

[0024] Figure 9 Schematic diagram of an imaging device according to the fifth embodiment of the present disclosure is shown.

[0025] Figure 10 From left to right are the spherical aberration, astigmatism, and distortion curves of the fifth embodiment in sequence.

[0026] Figure 11 Schematic diagram of an imaging device according to the sixth embodiment of the present disclosure is shown.

[0027] Figure 12 From left to right are the spherical aberration, astigmatism, and distortion curves of the sixth embodiment in sequence.

[0028] Figure 13 Schematic diagram of an imaging device according to the seventh embodiment of the present disclosure is shown.

[0029] Figure 14 From left to right are the spherical aberration, astigmatism, and distortion curves of the seventh embodiment in sequence.

[0030] Figure 15 Schematic perspective view of an imaging device according to the eighth embodiment of the present disclosure is shown.

[0031] Figure 16 Schematic perspective view of one side of an electronic device according to the ninth embodiment of the present disclosure is shown.

[0032] Figure 17 Shown is Figure 16 Schematic perspective view of the other side of the electronic device.

[0033] Figure 18 Shown is Figure 16 System block diagram of the electronic device.

[0034] Figure 19Schematic diagram showing one side of an electronic device according to the tenth embodiment of the present disclosure.

[0035] Figure 20 Schematic perspective view showing one side of an electronic device according to the eleventh embodiment of the present disclosure.

[0036] Figure 21 Schematic diagram showing critical points on the lens surface and parameters ET3, Y11, Y51, Y52, Yc41, Yc42, Yc51, and Yc52 in the first embodiment of the present disclosure.

[0037] Figure 22 Schematic diagram showing a configuration relationship of an optical path turning element in an optical imaging lens according to the present disclosure.

[0038] Figure 23 Schematic diagram showing another configuration relationship of an optical path turning element in an optical imaging lens according to the present disclosure.

[0039] Figure 24 Schematic diagram showing a configuration relationship of two optical path turning elements in an optical imaging lens according to the present disclosure.

[0040] [Symbol Description]

[0041] 1, 2, 3, 4, 5, 6, 7, 100, 100a, 100b, 100c, 100d, 100e, 100f, 100i, 100j, 100k, 100m, 100n, 100p, 100q, 100r: Imaging device

[0042] 101: Imaging lens

[0043] 102: Driving device

[0044] 103: Electronic photosensitive element

[0045] 104: Image stabilization module

[0046] 200, 300, 400: Electronic device

[0047] 201, 301, 401: Flashlight module

[0048] 202: Focus assist module

[0049] 203: Image signal processor

[0050] 204: Display module

[0051] 205: Image software processor

[0052] 206: Object

[0053] OA1: The first optical axis

[0054] OA2: The second optical axis

[0055] OA3: The third optical axis

[0056] LF, LF1, LF2: Reflective element

[0057] LG: Lens group

[0058] ST: Aperture

[0059] S1, S2: Diaphragm

[0060] E1: The first lens

[0061] E2: The second lens

[0062] E3: The third lens

[0063] E4: The fourth lens

[0064] E5: The fifth lens

[0065] E6: Filter element

[0066] IMG: Imaging surface

[0067] IS: Electronic photosensitive element

[0068] C: Critical point

[0069] ET3: The distance parallel to the optical axis from the position of the maximum effective radius of the object side surface of the third lens to the position of the maximum effective radius of the image side surface of the third lens

[0070] Y11: The maximum effective radius of the object side surface of the first lens

[0071] Y51: The maximum effective radius of the object side surface of the fifth lens

[0072] Y52: The maximum effective radius of the image side surface of the fifth lens

[0073] Yc41: The vertical distance between the concave critical point of the object side surface of the fourth lens and the optical axis

[0074] Yc42: The vertical distance between the convex critical point of the image side surface of the fourth lens and the optical axis

[0075] Yc51: The vertical distance between the concave critical point of the object side surface of the fifth lens and the optical axis

[0076] Yc52: The vertical distance between the convex critical point of the image side surface of the fifth lens and the optical axis Detailed implementation mode

[0077] The optical imaging lens includes five lenses, and the five 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, and a fifth lens. Among them, the five lenses respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction.

[0078] The first lens may have a positive refractive power; thereby, it helps to compress the volume at the object-side end of the optical imaging lens. The object-side surface of the first lens may be convex near the optical axis; thereby, it helps to increase the viewing angle. The image-side surface of the first lens is concave near the optical axis; thereby, the surface shape of the first lens can be adjusted, which helps to correct aberrations such as astigmatism.

[0079] The second lens may have a negative refractive power; thereby, it can balance the refractive power distribution at the object-side end of the optical imaging lens to correct aberrations such as spherical aberration. The object-side surface of the second lens is concave near the optical axis; thereby, it helps to increase the viewing angle and compress the outer diameter at the object-side end of the optical imaging lens.

[0080] The object-side surface of the third lens is concave near the optical axis; thereby, it helps to balance the volume distribution between the object-side end and the image-side end of the optical imaging lens. The image-side surface of the third lens may be convex near the optical axis; thereby, the traveling direction of the light can be adjusted, which helps to reduce surface reflection.

[0081] The fourth lens has a positive refractive power; thereby, it helps to compress the volume at the image-side end of the optical imaging lens. The object-side surface of the fourth lens is convex near the optical axis; thereby, the fourth lens can cooperate with the third lens to correct aberrations. The image-side surface of the fourth lens is concave near the optical axis; thereby, the surface shape and refractive power of the fourth lens can be adjusted to correct aberrations.

[0082] The object-side surface of the fifth lens may be convex near the optical axis; thereby, it helps to compress the length at the image-side end of the optical imaging lens. The image-side surface of the fifth lens may be concave near the optical axis; thereby, it helps to compress the length of the back focal length.

[0083] At least one of the five lenses of the optical imaging lens has at least one critical point off-axis. Specifically, among the first lens to the fifth lens, one or more lenses have at least one critical point off-axis, and for the single lens having at least one critical point off-axis, it means that at least one of the object-side surface and the image-side surface of this single lens has at least one critical point off-axis; thereby, the degree of change of the lens surface can be increased, which helps to compress the volume and improve the image quality. Among them, at least two of the five lenses of the optical imaging lens may each have at least one critical point off-axis. Please refer to Figure 21 , a schematic diagram showing the critical point C on the lens surface in the first embodiment of the present disclosure is illustrated. In Figure 21Among them, the image-side surface of the first lens E1, the image-side surface of the second lens E2, the image-side surface of the third lens E3, and the image-side surface of the fifth lens E5 each have a critical point C at an off-axis position, and the object-side surface of the third lens E3, the object-side surface and the image-side surface of the fourth lens E4, and the object-side surface of the fifth lens E5 each have two critical points C at an off-axis position. Figure 21 The first embodiment of the present disclosure is illustrated as an example. However, in other embodiments of the present disclosure, each lens may have one or more critical points at an off-axis position.

[0084] The object-side surface of the fourth lens may have at least one concave critical point at an off-axis position; thereby, the traveling direction of light can be adjusted, which helps to balance the volume distribution of the object-side end and the image-side end of the optical imaging lens. Among them, the image-side surface of the fourth lens may have at least one convex critical point at an off-axis position; thereby, the traveling direction of light can be adjusted, which helps to increase the imaging surface. Among them, the vertical distance between the concave critical point of the object-side surface of the fourth lens and the optical axis is Yc41, and the vertical distance between the convex critical point of the image-side surface of the fourth lens and the optical axis is Yc42. And the object-side surface of the fourth lens may have at least one concave critical point at an off-axis position and the image-side surface of the fourth lens may have at least one convex critical point at an off-axis position satisfying the following condition: 0.70 < Yc41 / Yc42 < 1.2; thereby, the surface shape of the fourth lens can be adjusted, which helps to correct off-axis aberrations such as image curvature. Please refer to Figure 21 , which shows a schematic diagram of the concave critical point C at an off-axis position of the object-side surface of the fourth lens E4, the convex critical point C at an off-axis position of the image-side surface of the fourth lens E4, and the parameters Yc41 and Yc42 in the first embodiment of the present disclosure. As Figure 21 shown, the object-side surface of the fourth lens E4 has a convex critical point C and a concave critical point C at an off-axis position, and the image-side surface of the fourth lens E4 also has a convex critical point C and a concave critical point C at an off-axis position.

[0085] The object-side surface of the fifth lens may have at least one concave critical point off the axis; thereby, the incident angle of light on the fifth lens can be adjusted, which helps to reduce surface reflection. Among them, the maximum effective radius of the object-side surface of the fifth lens is Y51, 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 object-side surface of the fifth lens may have at least one concave critical point off the axis that satisfies the following condition: 0.20 < Yc51 / Y51 < 0.60; thereby, the surface shape of the fifth lens can be adjusted to further improve the image quality. Among them, the image-side surface of the fifth 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 increase the illuminance of light in the wide field of view. Among them, the vertical distance between the convex critical point of the image-side surface of the fifth lens and the optical axis is Yc52, the maximum effective radius of the image-side surface of the fifth lens is Y52, and the image-side surface of the fifth lens may have at least one convex critical point off the axis that satisfies the following condition: 0.30 < Yc52 / Y52 < 0.70; thereby, the surface shape of the fifth lens can be adjusted to further improve the image quality. Please refer to Figure 21 , a schematic diagram showing the concave critical point C off the axis of the object-side surface of the fifth lens E5, the convex critical point C off the axis of the image-side surface of the fifth lens E5, and the parameters Y51, Y52, Yc51, and Yc52 in the first embodiment of the present disclosure. As Figure 21 shown, the object-side surface of the fifth lens E5 has a convex critical point C and a concave critical point C off the axis, and the image-side surface of the fifth lens E5 has a convex critical point C off the axis.

[0086] The radius of curvature of the image-side surface of the first lens is R2, and the radius of curvature of the object-side surface of the second lens is R3, which may satisfy the following conditions: -9.0 < R3 / R2 or R3 / R2 < -1.1. Thereby, the surface shapes of the first lens and the second lens can be matched with each other to correct aberration. Among them, the following conditions may also be satisfied: -8.0 < R3 / R2. Among them, the following conditions may also be satisfied: -7.0 < R3 / R2. Among them, the following conditions may also be satisfied: -6.0 < R3 / R2. Among them, the following conditions may also be satisfied: -5.12 ≤ R3 / R2. Among them, the following conditions may also be satisfied: R3 / R2 < -1.2. Among them, the following conditions may also be satisfied: R3 / R2 < -1.3. Among them, the following conditions may also be satisfied: R3 / R2 ≤ -1.39. Among them, the following conditions may also be satisfied: -9.0 < R3 / R2 < -1.2. Among them, the following conditions may also be satisfied: -5.12 ≤ R3 / R2 ≤ -1.39.

[0087] The thickness of the third lens on the optical axis is CT3, and the radius of curvature of the object-side surface of the third lens is R5, which can satisfy the following conditions: -25 < R5 / CT3 or R5 / CT3 < -5.0. Thereby, the surface shape of the third lens can be adjusted, which helps to balance the volume distribution of the object-side end and the image-side end of the optical imaging lens. Among them, the following conditions can also be satisfied: -20 < R5 / CT3. Among them, the following conditions can also be satisfied: -16 < R5 / CT3. Among them, the following conditions can also be satisfied: -14 < R5 / CT3. Among them, the following conditions can also be satisfied: -12.14 ≤ R5 / CT3. Among them, the following conditions can also be satisfied: R5 / CT3 < -5.5. Among them, the following conditions can also be satisfied: R5 / CT3 < -6.0. Among them, the following conditions can also be satisfied: R5 / CT3 ≤ -6.57. Among them, the following conditions can also be satisfied: -25 < R5 / CT3 < -5.0. Among them, the following conditions can also be satisfied: -20 < R5 / CT3 < -5.0. Among them, the following conditions can also be satisfied: -16 < R5 / CT3 < -5.0. Among them, the following conditions can also be satisfied: -12.14 ≤ R5 / CT3 ≤ -6.57.

[0088] 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, and the thickness of the fifth lens on the optical axis is CT5, which can satisfy the following conditions: 1.0 < (CT1 + CT2 + CT4 + CT5) / CT3 < 4.5. Thereby, the lens distribution can be adjusted, which helps to compress the volume of the optical imaging lens. Among them, the following conditions can also be satisfied: 1.5 < (CT1 + CT2 + CT4 + CT5) / CT3 < 4.0. Among them, the following conditions can also be satisfied: 2.0 < (CT1 + CT2 + CT4 + CT5) / CT3 < 3.5.

[0089] The thickness of the third lens on the optical axis is CT3, and the distance parallel to the optical axis from the position of the maximum effective radius of the object-side surface of the third lens to the position of the maximum effective radius of the image-side surface of the third lens is ET3, which can satisfy the following conditions: 1.3 < CT3 / ET3 < 2.4. Thereby, the surface shape of the third lens can be adjusted, which helps to balance the volume distribution of the object-side end and the image-side end of the optical imaging lens. Please refer to Figure 21 , a schematic diagram showing the parameter ET3 in the first embodiment of the present disclosure is illustrated.

[0090] The radius of curvature of the image-side surface of the fourth lens is R8, and the radius of curvature of the object-side surface of the fifth lens is R9, which can satisfy the following conditions: 6.5 < R8 / R9 < 14. Thereby, the surface shapes of the fourth lens and the fifth lens can be cooperated with each other, which helps to correct aberration.

[0091] The combined focal length of the first lens and the second lens is f12, and the combined focal length of the third lens, the fourth lens, and the fifth lens is f345, which can satisfy the following conditions: 0.25 < f12 / f345 < 2.5. Thereby, the refractive power distribution of the optical imaging lens can be adjusted, which helps to reduce sensitivity. Among them, the following conditions can also be satisfied: 0.50 < f12 / f345 < 1.9.

[0092] The focal length of the second lens is f2, and the focal length of the fourth lens is f4, which can satisfy the following conditions: f2 / f4 < -0.80. Thereby, the refractive power distribution of the optical imaging lens can be adjusted to correct aberration. Among them, the following conditions can also be satisfied: -4.0 < f2 / f4 < -1.1. Among them, the following conditions can also be satisfied: -3.0 < f2 / f4 < -1.3.

[0093] The radius of curvature of the object side surface of the third lens is R5, the radius of curvature of the image side surface of the third lens is R6, and the focal length of the third lens is f3, which can satisfy the following conditions: (|R5| + |R6|) / |f3| < 0.60. Thereby, the surface shape and refractive power of the third lens can be adjusted to correct aberration. Among them, the following conditions can also be satisfied: (|R5| + |R6|) / |f3| < 0.48. Among them, the following conditions can also be satisfied: (|R5| + |R6|) / |f3| < 0.36.

[0094] Half of the maximum viewing angle of the optical imaging lens is HFOV, which can satisfy the following conditions: 42.0 degrees < HFOV < 51.0 degrees. Thereby, it helps to increase the viewing angle and can avoid aberrations such as distortion caused by too large a viewing angle.

[0095] 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 fifth lens is Y52, which can satisfy the following conditions: 2.7 < Y52 / Y11 < 4.0. Thereby, the traveling direction of light can be adjusted, which helps to balance the viewing angle size, imaging surface size, and volume distribution. Please refer to Figure 21 , which shows a schematic diagram of the parameters Y11 and Y52 in accordance with the first embodiment of the present disclosure.

[0096] The Abbe number of the first lens is V1, and the Abbe number of the second lens is V2, which can satisfy the following conditions: 2.85 < V1 / V2 < 4.50. Thereby, the materials of the first lens and the second lens can be cooperated with each other to correct chromatic aberration.

[0097] 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 optical imaging lens 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: 1.1 < TL / ImgH < 1.5. Thereby, a balance can be achieved between compressing the total length and increasing the imaging surface.

[0098] The aperture value (F-number) of the optical imaging lens is Fno, which can satisfy the following conditions: 1.5 < Fno < 2.5. Thereby, a balance can be achieved between illuminance and depth of field. Among them, the following conditions can also be satisfied: 1.7 < Fno < 2.3.

[0099] 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 second lens and the third lens on the optical axis is T23, and the distance between the third lens and the fourth lens on the optical axis is T34, which can satisfy the following conditions: 4.0 < (CT2 + CT3 + CT4) / (T23 + T34) < 15. Thereby, the lens distribution can be adjusted, which helps to compress the volume of the optical imaging lens. Among them, the following conditions can also be satisfied: 4.5 < (CT2 + CT3 + CT4) / (T23 + T34) < 13.

[0100] The thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, which can satisfy the following conditions: 1.1 < CT3 / CT4 < 3.5. Thereby, the third lens and the fourth lens can cooperate with each other, which helps to balance the volume distribution at the image side end of the optical imaging lens. Among them, the following conditions can also be satisfied: 1.3 < CT3 / CT4 < 2.9. Among them, the following conditions can also be satisfied: 1.5 < CT3 / CT4 < 2.3.

[0101] The focal length of the third lens is f3, the focal length of the fourth lens is f4, and the focal length of the fifth lens is f5, which can satisfy the following conditions: 0 < f4 / (|f3| + |f5|) < 0.12. Thereby, it helps to balance the refractive power distribution of the optical imaging lens.

[0102] 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 the focal length of the first lens is f1, which can satisfy the following conditions: 1.0 < (R1 + R2) / f1 < 2.3. Thereby, the surface shape and refractive power of the first lens can be adjusted to compress the outer diameter at the object side end of the optical imaging lens.

[0103] The radius of curvature of the object side surface of the fourth lens is R7, the radius of curvature of the image side surface of the fourth lens is R8, which can satisfy the following conditions: -3.0 < (R7 + R8) / (R7 - R8) < -1.4. Thereby, the surface shape of the fourth lens can be adjusted to correct aberration.

[0104] The radius of curvature of the object side surface of the second lens is R3, and the focal length of the second lens is f2, which can satisfy the following conditions: 0 < R3 / f2 < 6.0. Thereby, the surface shape and refractive power of the second lens can be adjusted to correct aberration. Among them, the following conditions can also be satisfied: 0.30 < R3 / f2 < 4.5.

[0105] The maximum effective radius of the image-side surface of the fifth lens is Y52, and the radius of curvature of the image-side surface of the fifth lens is R10, which can satisfy the following condition: 3.5 < Y52 / R10 < 4.5. Thereby, the surface shape of the fifth lens can be adjusted, which helps to correct off-axis aberration.

[0106] All the technical features in the optical imaging lens disclosed in the present disclosure can be combined and configured to achieve the corresponding effects.

[0107] In the optical imaging lens disclosed in the present disclosure, the material of the lens can be glass or plastic. If the material of the lens is glass, the degree of freedom of the refractive power configuration of the optical imaging lens 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 provided on the lens surface. Among them, the spherical lens can reduce the manufacturing difficulty, and if an aspherical surface is provided on the lens surface, more control variables can be obtained thereby to reduce aberration, reduce the number of lenses, and effectively reduce the total length of the optical imaging lens disclosed in the present disclosure. Further, the aspherical surface can be made by methods such as plastic injection molding or molding of glass lenses.

[0108] In the optical imaging lens disclosed in the present disclosure, 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.

[0109] In the optical imaging lens disclosed in the present disclosure, additives can be selectively added to any (or more) lens materials to produce light absorption or light interference effects, so as to change the transmittance of the lens to light in a specific wavelength band, thereby reducing stray light and chromatic aberration. For example: the additive can have the function of filtering light in the wavelength band of 600 nm to 800 nm in the system, which helps to reduce redundant red light or infrared light; or it can filter light in the wavelength band of 350 nm to 450 nm to reduce redundant blue light or ultraviolet light. Therefore, the additive can avoid the interference of light in a specific wavelength band on imaging. In addition, the additive can be uniformly mixed in the plastic and made into a lens by injection molding technology. In addition, the additive can also be disposed on the coating on the lens surface to provide the above effects.

[0110] In the optical imaging lens disclosed in the present disclosure, if the lens surface is a convex surface 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 a concave surface 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 does not define its regional position, 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.

[0111] In the optical imaging lens disclosed in the present disclosure, the critical point on the lens surface refers to the tangent point on the tangent line where the plane perpendicular to the optical axis is tangent to the lens surface, and the critical point is not located on the optical axis.

[0112] In the optical imaging lens disclosed in the present disclosure, the imaging surface of the optical imaging lens can be a plane or a curved surface with any curvature according to the corresponding electronic photosensitive element, especially a curved surface with a concave surface facing the object side.

[0113] In the optical imaging lens disclosed in the present disclosure, one or more imaging correction elements (such as flat-field elements, etc.) can be selectively arranged between the lens closest to the imaging surface on the imaging optical path and the imaging surface to achieve the effect of correcting the image (such as image curvature, etc.). The optical properties of the imaging correction element, such as curvature, thickness, refractive index, position, surface type (convex or concave, spherical or aspherical, diffractive surface, Fresnel surface, etc.), can be adjusted according to the requirements of the imaging device. Generally speaking, a better configuration of the imaging correction element is to arrange a thin plano-concave element with a concave surface facing the object side near the imaging surface.

[0114] In the optical imaging lens disclosed in the present disclosure, at least one element with the function of turning the optical path can also be selectively arranged between the object to be photographed and the imaging surface on the imaging optical path, such as a prism or a mirror, etc. Among them, the prism surface or the mirror surface can be a plane, a spherical surface, an aspherical surface or a free-form surface, etc., to provide a higher elastic spatial configuration for the optical imaging lens, so that the thinning of the electronic device is not restricted by the total optical length of the optical imaging lens. For further description, please refer to Figure 22 and Figure 23 , where Figure 22 shows a schematic diagram of a configuration relationship of an optical path turning element in an optical imaging lens according to the present disclosure, and Figure 23 shows another schematic diagram of a configuration relationship of an optical path turning element in an optical imaging lens according to the present disclosure. As shown in Figure 22 and Figure 23 , the optical imaging lens can have a first optical axis OA1, an optical path turning element LF and a second optical axis OA2 in sequence along the optical path from the object to be photographed (not shown) to the imaging surface IMG. Among them, the optical path turning element LF can be arranged as shown in Figure 22 between the object to be photographed and the lens group LG of the optical imaging lens, or as shown in Figure 23 between the lens group LG of the optical imaging lens and the imaging surface IMG. In addition, please refer to Figure 24 , which shows a schematic diagram of a configuration relationship of two optical path turning elements in an optical imaging lens according to the present disclosure. As shown in Figure 24As shown, the optical imaging lens can also follow the optical path from the object (not shown) to the imaging surface IMG, and sequentially have a first optical axis OA1, a first optical path turning element LF1, a second optical axis OA2, a second optical path turning element LF2, and a third optical axis OA3. Among them, the first optical path turning element LF1 is disposed between the object and the lens group LG of the optical imaging lens, and the second optical path turning element LF2 is disposed between the lens group LG of the optical imaging lens and the imaging surface IMG. And the traveling direction of the light on the first optical axis OA1 can be as Figure 24 shown, and the traveling direction of the light on the third optical axis OA3 is the same direction. The optical imaging lens can also be selectively configured with more than three optical path turning elements. The present disclosure is not limited to the types, quantities, and positions of the optical path turning elements disclosed in the drawings.

[0115] In the optical imaging lens disclosed in the present disclosure, at least one aperture stop can be provided, which can be located in front of the first lens, between each lens, or behind the last lens. The types of the aperture stop such as a glare stop or a field stop can be used to reduce stray light and help improve the image quality.

[0116] In the optical imaging lens disclosed in the present disclosure, the aperture can be configured as a front aperture or a middle aperture. Among them, the front aperture means that the aperture is disposed between the object and the first lens, and the middle aperture means that the aperture is disposed between the first lens and the imaging surface. If the aperture is a front aperture, it can make the exit pupil have a longer distance from the imaging surface, making it have a telecentric effect, and can increase the efficiency of the CCD or CMOS of the electronic photosensitive element to receive images. If it is a middle aperture, it helps to expand the field of view angle of the optical imaging lens.

[0117] The present disclosure can appropriately set a variable aperture element. The variable aperture element can be a mechanical component or a light control element, and its aperture size and shape can be controlled by electricity or an electrical signal. The mechanical component can include movable parts such as a blade group and a shielding plate. The light control element can include shielding materials such as a filter element, an electrochromic material, and a liquid crystal layer. The variable aperture element can strengthen the image adjustment ability by controlling the light incident amount or exposure time of the image. In addition, the variable aperture element can also be the aperture of the present disclosure, and can adjust the image quality, such as the depth of field or the exposure speed, by changing the aperture value.

[0118] One or more optical elements can be appropriately placed in the present disclosure to limit the form of light passing through the optical imaging lens. The optical elements can be a filter, a polarizer, etc., but the present disclosure is not limited thereto. Moreover, the optical elements can be a single-piece element, a composite component, or presented in the form of a thin film, etc., but the present disclosure is not limited thereto. The optical elements can be placed at the object side, the image side, or between the lenses of the optical imaging lens to control the passage of specific forms of light, thereby meeting the application requirements.

[0119] In the optical imaging lens disclosed in the present disclosure, it may include at least one optical lens, an optical element, or a carrier, and at least one surface thereof has a low-reflection layer, and the low-reflection layer can effectively reduce the stray light generated by the reflection of light at the interface. The low-reflection layer can be disposed in the non-effective area of the object-side surface or the image-side surface of the optical lens, or the connection surface between the object-side surface and the image-side surface; the optical element can be a light-shielding element, an annular spacer element, a lens barrel element, a cover glass, a blue glass, a filter element (Filter, Color filter), an optical path turning element (reflection element), a prism, or a mirror, etc.; the carrier can be a lens group lens mount, a microlens disposed on the photosensitive element, the periphery of the photosensitive element substrate, or a glass sheet for protecting the photosensitive element, etc.

[0120] In the optical imaging lens disclosed in the present disclosure, the object side and the image side are determined according to the optical axis direction, and moreover, the data on the optical axis is calculated along the optical axis, and when the optical axis is turned by an optical path turning element, the data on the optical axis is also calculated along the optical axis.

[0121] According to the above embodiments, specific embodiments are proposed below and will be described in detail with reference to the accompanying drawings.

[0122] <First Embodiment>

[0123] Please refer to Figures 1 to 2 , in which Figure 1 FIG. shows a schematic diagram of an imaging device according to the first embodiment of the present disclosure, Figure 2 and the spherical aberration, astigmatism, and distortion curves of the first embodiment are shown in sequence from left to right. As can be seen from Figure 1 , the imaging device 1 includes an optical imaging lens (not labeled separately) and an electronic photosensitive element IS. The optical imaging lens sequentially includes an aperture ST, a first lens E1, a diaphragm S1, a second lens E2, a diaphragm S2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element (Filter) E6, and an imaging surface IMG along the optical path from the object side to the image side. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other interpolated lenses between the lenses.

[0124] The first lens E1 has a positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical, and its image-side surface has a convex critical point off the axis.

[0125] The second lens E2 has a 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 convex critical point off the axis.

[0126] The third lens E3 has a 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 convex critical point and a concave critical point off the axis, and its image-side surface has a concave critical point off the axis.

[0127] The fourth lens E4 has a 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 of its surfaces are aspherical. Its object-side surface has a convex critical point and a concave critical point off the axis, and its image-side surface has a convex critical point and a concave critical point off the axis.

[0128] The fifth lens E5 has a 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 convex critical point and a concave critical point off the axis, and its image-side surface has a convex critical point off the axis.

[0129] The filter element E6 is made of glass. It is disposed between the fifth lens E5 and the imaging surface IMG and does not affect the focal length of the optical imaging lens.

[0130] The aspherical curve equations of the above lenses are expressed as follows:

[0131]

[0132] X: The displacement parallel to the optical axis from the intersection point of the aspherical surface and the optical axis to the point on the aspherical surface that is at a distance Y from the optical axis;

[0133] Y: The perpendicular distance from the point on the aspherical curve to the optical axis;

[0134] R: The radius of curvature;

[0135] k: The conic coefficient; and

[0136] Ai: The i-th order aspherical coefficient.

[0137] In the optical imaging lens of the first embodiment, the focal length of the optical imaging lens is f, the aperture value of the optical imaging lens is Fno, and half of the maximum viewing angle of the optical imaging lens is HFOV. The numerical values are as follows: f = 2.59 millimeters (mm), Fno = 1.99, HFOV = 45.0 degrees (deg.).

[0138] The Abbe number of the first lens E1 is V1, and the Abbe number of the second lens E2 is V2, which satisfy the following condition: V1 / V2 = 3.37.

[0139] 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, 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 thickness of the fifth lens E5 on the optical axis is CT5, which satisfy the following condition: (CT1 + CT2 + CT4 + CT5) / CT3 = 2.61.

[0140] The thickness of the second lens E2 on the optical axis is CT2, 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, the distance between the second lens E2 and the third lens E3 on the optical axis is T23, and the distance between the third lens E3 and the fourth lens E4 on the optical axis is T34, which satisfy the following condition: (CT2 + CT3 + CT4) / (T23 + T34) = 7.90. In this embodiment, the distance between two adjacent lenses on the optical axis refers to the distance on the optical axis between two adjacent mirror surfaces of the two adjacent lenses.

[0141] The thickness of the third lens E3 on the optical axis is CT3, and the thickness of the fourth lens E4 on the optical axis is CT4, which satisfy the following condition: CT3 / CT4 = 1.79.

[0142] The thickness of the third lens E3 on the optical axis is CT3, and the distance parallel to the optical axis from the position of the maximum effective radius of the object side surface of the third lens E3 to the position of the maximum effective radius of the image side surface of the third lens E3 is ET3, which satisfy the following condition: CT3 / ET3 = 1.70.

[0143] The distance from the object side surface of the first lens E1 to the imaging surface IMG on the optical axis is TL, and the maximum imaging height of the optical imaging lens is ImgH, which satisfy the following condition: TL / ImgH = 1.40.

[0144] The radius of curvature of the object side surface of the third lens E3 is R5, the radius of curvature of the image side surface of the third lens E3 is R6, and the focal length of the third lens E3 is f3, which satisfy the following condition: (|R5| + |R6|) / |f3| = 0.29.

[0145] The radius of curvature of the object-side surface of the first lens E1 is R1, the radius of curvature of the image-side surface of the first lens E1 is R2, and the focal length of the first lens E1 is f1, which satisfies the following condition: (R1 + R2) / f1 = 1.72.

[0146] The radius of curvature of the object-side surface of the fourth lens E4 is R7, 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) = -1.78.

[0147] The radius of curvature of the object-side surface of the second lens E2 is R3, and the focal length of the second lens E2 is f2, which satisfies the following condition: R3 / f2 = 1.03.

[0148] The radius of curvature of the image-side surface of the first lens E1 is R2, and the radius of curvature of the object-side surface of the second lens E2 is R3, which satisfies the following condition: R3 / R2 = -1.90.

[0149] The radius of curvature of the object-side surface of the third lens E3 is R5, and the thickness of the third lens E3 on the optical axis is CT3, which satisfies the following condition: R5 / CT3 = -10.66.

[0150] The radius of curvature of the image-side surface of the fourth lens E4 is R8, and the radius of curvature of the object-side surface of the fifth lens E5 is R9, which satisfies the following condition: R8 / R9 = 10.17.

[0151] The combined focal length of the first lens E1 and the second lens E2 is f12, and the combined focal length of the third lens E3, the fourth lens E4, and the fifth lens E5 is f345, which satisfies the following condition: f12 / f345 = 1.15.

[0152] The focal length of the second lens E2 is f2, and the focal length of the fourth lens E4 is f4, which satisfies the following condition: f2 / f4 = -1.67.

[0153] The focal length of the third lens E3 is f3, the focal length of the fourth lens E4 is f4, and the focal length of the fifth lens E5 is f5, which satisfies the following condition: f4 / (|f3| + |f5|) = 0.10.

[0154] The maximum effective radius of the image-side surface of the fifth lens E5 is Y52, and the radius of curvature of the image-side surface of the fifth lens E5 is R10, which satisfies the following condition: Y52 / R10 = 3.96.

[0155] 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 fifth lens E5 is Y52, which satisfies the following condition: Y52 / Y11 = 3.22.

[0156] The vertical distance between the concave critical point on the object side surface of the fourth lens E4 and the optical axis is Yc41, and the vertical distance between the convex critical point on the image side surface of the fourth lens E4 and the optical axis is Yc42, which satisfy the following condition: Yc41 / Yc42 = 0.90.

[0157] 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 maximum effective radius of the object side surface of the fifth lens E5 is Y51, which satisfy the following condition: Yc51 / Y51 = 0.37.

[0158] The vertical distance between the convex critical point on the image side surface of the fifth lens E5 and the optical axis is Yc52, and the maximum effective radius of the image side surface of the fifth lens E5 is Y52, which satisfy the following condition: Yc52 / Y52 = 0.48.

[0159] Please refer to Table 1A and Table 1B below for reference.

[0160] Table 1A

[0161]

[0162] Table 1B

[0163]

[0164]

[0165] Table 1A is Figure 1 The detailed structural data of the first embodiment, where the unit of the radius of curvature, thickness, and focal length is millimeter (mm), and the surfaces from 0 to 16 represent the surfaces from the object side to the image side in sequence. Table 1B is the aspherical data in the first embodiment, where k is the conic coefficient in the aspherical curve equation, and A4 to A28 represent the 4th to 28th order aspherical coefficients of each surface. In addition, the tables of the following embodiments correspond to the schematic diagrams and aberration curves of each embodiment, and the definitions of the data in the tables are the same as those in Table 1A and Table 1B of the first embodiment, and will not be elaborated here.

[0166] <Second Embodiment>

[0167] Please refer to Figures 3 to 4 , where Figure 3 is a schematic diagram of an imaging device according to the second embodiment of the present disclosure, Figure 4 from left to right are the spherical aberration, astigmatism, and distortion curves of the second embodiment. From Figure 3It can be known that the imaging device 2 includes an optical imaging lens (not otherwise labeled) and an electronic photosensitive element IS. The optical imaging lens sequentially includes an aperture ST, a first lens E1, a diaphragm S1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6, and an imaging surface IMG along the optical path from the object side to the image side. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other interpolated lenses between the lenses.

[0168] The first lens E1 has a positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical, and its image-side surface has a convex critical point off the axis.

[0169] The second lens E2 has a negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical, and its image-side surface has a convex critical point off the axis.

[0170] The third lens E3 has a negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both of its surfaces are aspherical, its object-side surface has a convex critical point off the axis, and its image-side surface has a concave critical point off the axis.

[0171] The fourth lens E4 has a positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical, its object-side surface has a concave critical point off the axis, and its image-side surface has a convex critical point off the axis.

[0172] The fifth lens E5 has a negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical, its object-side surface has a convex critical point and a concave critical point off the axis, and its image-side surface has a convex critical point off the axis.

[0173] The filter element E6 is made of glass and is disposed between the fifth lens E5 and the imaging surface IMG, and does not affect the focal length of the optical imaging lens.

[0174] Please refer to Table 2A and Table 2B below for reference.

[0175] Table 2A

[0176]

[0177] Table 2B

[0178]

[0179]

[0180] In the second embodiment, the aspheric curve equation is expressed in the same form as in the first embodiment. In addition, all the definitions described in Table 2C below are the same as those in the first embodiment and will not be elaborated here.

[0181] Table 2C

[0182]

[0183] <Third Embodiment>

[0184] Please refer to Figures 5 to 6 , wherein Figure 5 FIG. shows a schematic diagram of an imaging device according to the third embodiment of the present disclosure. Figure 6 From left to right are the spherical aberration, astigmatism, and distortion curves of the third embodiment. As can be seen from Figure 5 , the imaging device 3 includes an optical imaging lens (not labeled separately) and an electronic photosensitive element IS. The optical imaging lens sequentially includes an aperture ST, a first lens E1, a diaphragm S1, a second lens E2, a diaphragm S2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6, and an imaging surface IMG along the optical path from the object side to the image side. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other interpolated lenses between the lenses.

[0185] The first lens E1 has a positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspheric, and its image-side surface has a convex critical point at the off-axis position.

[0186] The second lens E2 has a negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspheric, and its image-side surface has a convex critical point at the off-axis position.

[0187] The third lens E3 has a negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both of its surfaces are aspheric, and its object-side surface has a convex critical point and a concave critical point at the off-axis position.

[0188] The fourth lens E4 has a positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspheric, its object-side surface has a convex critical point and a concave critical point at the off-axis position, and its image-side surface has a convex critical point and a concave critical point at the off-axis position.

[0189] The fifth lens E5 has a 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 convex critical point and a concave critical point off the axis, and its image-side surface has a convex critical point off the axis.

[0190] The filter element E6 is made of glass and is disposed between the fifth lens E5 and the imaging surface IMG, and does not affect the focal length of the optical imaging lens.

[0191] Please refer to Table 3A and Table 3B below.

[0192] Table 3A

[0193]

[0194] Table 3B

[0195]

[0196]

[0197]

[0198] In the third embodiment, the curve equation of the aspherical surface is expressed in the same form as that of the first embodiment. In addition, the definitions described in Table 3C below are the same as those in the first embodiment and will not be elaborated here.

[0199] Table 3C

[0200]

[0201] <Fourth Embodiment>

[0202] Please refer to Figures 7 to 8 , wherein Figure 7 FIG. shows a schematic diagram of an imaging device according to the fourth embodiment of the present disclosure. Figure 8 From left to right are the spherical aberration, astigmatism, and distortion curves of the fourth embodiment. As can be seen from Figure 7 , the imaging device 4 includes an optical imaging lens (not labeled separately) and an electronic photosensitive element IS. The optical imaging lens sequentially includes an aperture ST, a first lens E1, a diaphragm S1, a second lens E2, a diaphragm S2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6, and an imaging surface IMG along the optical path from the object side to the image side. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other interpolated lenses between the lenses.

[0203] The first lens E1 has a positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, and both of its surfaces are aspherical surfaces.

[0204] The second lens E2 has a negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical surfaces, and its image-side surface has a convex critical point at the off-axis position.

[0205] The third lens E3 has a positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both of its surfaces are aspherical surfaces, and its object-side surface has a convex critical point and a concave critical point at the off-axis position.

[0206] The fourth lens E4 has a positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical surfaces, its object-side surface has a convex critical point and a concave critical point at the off-axis position, and its image-side surface has a convex critical point and a concave critical point at the off-axis position.

[0207] The fifth lens E5 has a positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical surfaces, its object-side surface has a convex critical point and a concave critical point at the off-axis position, and its image-side surface has a convex critical point at the off-axis position.

[0208] The material of the filter element E6 is glass. It is disposed between the fifth lens E5 and the imaging surface IMG and does not affect the focal length of the optical imaging lens.

[0209] Please refer to Table 4A and Table 4B below for reference.

[0210] Table 4A

[0211]

[0212] Table 4B

[0213]

[0214]

[0215] In the fourth embodiment, the curve equation of the aspherical surface is expressed in the same form as that in the first embodiment. In addition, the definitions described in Table 4C below are the same as those in the first embodiment and will not be elaborated here.

[0216] Table 4C

[0217]

[0218] <Fifth Embodiment>

[0219] Please refer to Figures 9 to 10 , where Figure 9 FIG. shows a schematic diagram of an imaging device according to the fifth embodiment of the present disclosure, Figure 10 from left to right are the spherical aberration, astigmatism, and distortion curves of the fifth embodiment. It can be seen from Figure 9 that the imaging device 5 includes an optical imaging lens (not labeled separately) and an electronic photosensitive element IS. The optical imaging lens sequentially includes an aperture ST, a first lens E1, a diaphragm S1, a second lens E2, a diaphragm S2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6, and an imaging surface IMG along the optical path from the object side to the image side. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other interpolated lenses between the lenses.

[0220] The first lens E1 has a positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical, and its image-side surface has a convex critical point at the off-axis position.

[0221] The second lens E2 has a negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both of its surfaces are aspherical, and its image-side surface has a convex critical point and a concave critical point at the off-axis position.

[0222] The third lens E3 has a negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both of its surfaces are aspherical, and its object-side surface has a convex critical point and a concave critical point at the off-axis position.

[0223] The fourth lens E4 has a positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical, its object-side surface has a concave critical point at the off-axis position, and its image-side surface has a convex critical point and a concave critical point at the off-axis position.

[0224] The fifth lens E5 has a negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical, its object-side surface has a convex critical point and a concave critical point at the off-axis position, and its image-side surface has a convex critical point at the off-axis position.

[0225] The filter element E6 is made of glass and is disposed between the fifth lens E5 and the imaging surface IMG, and does not affect the focal length of the optical imaging lens.

[0226] Please refer to Table 5A and Table 5B below for reference.

[0227] Table 5A

[0228]

[0229]

[0230] Table 5B

[0231]

[0232]

[0233] In the fifth embodiment, the curve equation of the aspherical surface is expressed in the same form as that of the first embodiment. In addition, the definitions described in Table 5C below are the same as those in the first embodiment and will not be elaborated here.

[0234] Table 5C

[0235]

[0236] <Sixth Embodiment>

[0237] Please refer to Figures 11 to 12 , wherein Figure 11 shows a schematic diagram of an imaging device according to the sixth embodiment of the present disclosure. Figure 12 From left to right are the spherical aberration, astigmatism, and distortion curves of the sixth embodiment. As can be seen from Figure 11 , the imaging device 6 includes an optical imaging lens (not labeled separately) and an electronic photosensitive element IS. The optical imaging lens sequentially includes an aperture ST, a first lens E1, a diaphragm S1, a second lens E2, a diaphragm S2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6, and an imaging surface IMG along the optical path from the object side to the image side. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other interpolated lenses between the lenses.

[0238] The first lens E1 has a 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 of its surfaces are aspherical surfaces.

[0239] The second lens E2 has a 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 surfaces, and its image-side surface has a convex critical point at the off-axis position.

[0240] The third lens E3 has a 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, and its object-side surface has a convex critical point and a concave critical point off the axis.

[0241] The fourth lens E4 has a 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 of its surfaces are aspherical. Its object-side surface has a convex critical point and a concave critical point off the axis, and its image-side surface has a convex critical point and a concave critical point off the axis.

[0242] The fifth lens E5 has a 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 of its surfaces are aspherical. Its object-side surface has a convex critical point and a concave critical point off the axis, and its image-side surface has a convex critical point off the axis.

[0243] The filter element E6 is made of glass. It is disposed between the fifth lens E5 and the imaging surface IMG and does not affect the focal length of the optical imaging lens.

[0244] Please refer to Table 6A and Table 6B below.

[0245] Table 6A

[0246]

[0247]

[0248] Table 6B

[0249]

[0250]

[0251] In the sixth embodiment, the curve equation of the aspherical surface is expressed in the form of the first embodiment. In addition, the definitions described in Table 6C below are the same as those in the first embodiment and will not be elaborated here.

[0252] Table 6C

[0253]

[0254] <The seventh embodiment>

[0255] Please refer to Figures 13 to 14 , wherein Figure 13 shows a schematic diagram of the imaging device according to the seventh embodiment of the present disclosure. Figure 14 From left to right are the spherical aberration, astigmatism, and distortion curves of the seventh embodiment. Figure 13It can be known that the imaging device 7 includes an optical imaging lens (not otherwise labeled) and an electronic photosensitive element IS. The optical imaging lens sequentially includes an aperture ST, a first lens E1, a diaphragm S1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6, and an imaging surface IMG along the optical path from the object side to the image side. Among them, the electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other interpolated lenses between the lenses.

[0256] The first lens E1 has a positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical, and its image-side surface has a convex critical point off the axis.

[0257] The second lens E2 has a negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical, and its image-side surface has a convex critical point off the axis.

[0258] The third lens E3 has a negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, both of its surfaces are aspherical, and its object-side surface has a convex critical point and a concave critical point off the axis.

[0259] The fourth lens E4 has a positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical, its object-side surface has a concave critical point off the axis, and its image-side surface has a convex critical point and a concave critical point off the axis.

[0260] The fifth lens E5 has a negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is concave near the optical axis, both of its surfaces are aspherical, its object-side surface has a convex critical point and a concave critical point off the axis, and its image-side surface has a convex critical point off the axis.

[0261] The material of the filter element E6 is glass. It is disposed between the fifth lens E5 and the imaging surface IMG and does not affect the focal length of the optical imaging lens.

[0262] Please refer to Table 7A and Table 7B below for reference.

[0263] Table 7A

[0264]

[0265]

[0266] Table 7B

[0267]

[0268]

[0269] In the seventh embodiment, the curve equation of the aspherical surface is expressed in the same form as that in the first embodiment. In addition, the definitions described in Table 7C below are the same as those in the first embodiment and will not be elaborated here.

[0270] Table 7C

[0271]

[0272] <Eighth Embodiment>

[0273] Please refer to Figure 15 , which shows a three-dimensional schematic diagram of an imaging device according to the eighth embodiment of the present disclosure. In this embodiment, the imaging device 100 is a camera module. The imaging 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 optical imaging lens of the first embodiment above, a lens barrel (not separately labeled) for carrying the optical imaging lens, and a support device (Holder Member, not separately labeled). The imaging lens 101 can also be configured with the optical imaging lenses of the other embodiments above, and the present disclosure is not limited thereto. The imaging device 100 uses the imaging lens 101 to collect light to generate an image, cooperates with the driving device 102 to perform image focusing, and finally forms an image on the electronic photosensitive element 103 and can output it as image data.

[0274] The driving device 102 can have an auto-focus function, and its driving method can use driving systems such as a voice coil motor (VCM), a micro electro-mechanical systems (MEMS), a piezoelectric system, and a shape memory alloy. The driving device 102 can enable the imaging lens 101 to obtain a better imaging position, and can provide clear images for the object to be photographed in different object distance states. In addition, the imaging device 100 is equipped with an electronic photosensitive element 103 with good sensitivity and low noise (such as CMOS, CCD) disposed on the imaging surface of the optical imaging lens, which can truly present the good imaging quality of the optical imaging lens.

[0275] The image stabilization module 104 is, for example, an accelerometer, a gyroscope, or a Hall Effect Sensor. The driving device 102 and the image stabilization module 104 can together serve as an optical image stabilization (OIS) device, which compensates for the blurred images caused by shaking during shooting by adjusting the changes of the imaging lens 101 in different axial directions, or provides an electronic image stabilization (EIS) function by using the image compensation technology in the image software, further improving the imaging quality in dynamic and low-light scenarios.

[0276] <The Ninth Embodiment>

[0277] Please refer to Figures 16 to 18 , wherein Figure 16 FIG. shows a three-dimensional schematic diagram of one side of an electronic device according to the ninth embodiment of the present disclosure. Figure 17 FIG. shows Figure 16 a three-dimensional schematic diagram of the other side of the electronic device of Figure 18 FIG. shows Figure 16 a system block diagram of the electronic device of

[0278] In this embodiment, the electronic device 200 is a smart phone. The electronic device 200 includes the imaging device 100 of the eighth embodiment, the imaging devices 100a, 100b, 100c, 100d, a flash module 201, a focus assist module 202, an image signal processor 203 (Image Signal Processor), a display module 204, and an image software processor 205. The imaging device 100 and the imaging device 100a are both disposed on the same side of the electronic device 200 and are both single-focus. The focus assist module 202 can adopt a laser rangefinder or a time-of-flight (ToF) module, but the present disclosure is not limited thereto. The imaging devices 100b, 100c, 100d and the display module 204 are all disposed on the other side of the electronic device 200, and the display module 204 can be a user interface, so that the imaging devices 100b, 100c and 100d can be used as front cameras to provide a self-shooting function, but the present disclosure is not limited thereto. Moreover, the imaging devices 100a, 100b, 100c and 100d can all include the optical imaging lens of the present disclosure and can all have a structural configuration similar to that of the imaging device 100. Specifically, each of the imaging devices 100a, 100b, 100c and 100d can include an imaging lens, a driving device, an electronic photosensitive element and an image stabilization module, and can each include an optical path turning element as an element for turning the optical path. Among them, the imaging lenses of the imaging devices 100a, 100b, 100c and 100d can each include, for example, the optical imaging lens of the present disclosure, a lens barrel for carrying the optical imaging lens, and a support device.

[0279] The imaging device 100 is a wide-angle imaging device, the imaging device 100a is an ultra-wide-angle imaging device, the imaging device 100b is a wide-angle imaging device, the imaging device 100c is an ultra-wide-angle imaging device, and the imaging device 100d is a time-of-flight imaging device. The imaging devices 100, 100a, 100b and 100c of this embodiment have different viewing angles, so that the electronic device 200 can provide different magnification ratios to achieve the shooting effect of optical zoom. In addition, the imaging device 100d can obtain the depth information of the image. Among them, the above-mentioned imaging devices can all have an optical path turning configuration, which can, for example, have a structure similar to Figures 22 to 24 and can refer to the corresponding Figures 22 to 24 description, which will not be elaborated herein. The above electronic device 200 takes the example of including multiple imaging devices 100, 100a, 100b, 100c, 100d, but the number and configuration of the imaging devices are not used to limit the present disclosure.

[0280] When the user takes a picture of the object 206, the electronic device 200 uses the image capturing device 100 or the image capturing device 100a to focus and capture the image, activates the flash module 201 for fill light, and uses the object distance information of the object 206 provided by the focus assist module 202 for rapid focusing, and the image signal processor 203 performs image optimization processing to further improve the image quality produced by the optical imaging lens. The focus assist module 202 can use an infrared or laser focus assist system to achieve rapid focusing. In addition, the electronic device 200 can also use the image capturing device 100b, the image capturing device 100c, or the image capturing device 100d for shooting. The display module 204 can use a touch screen to cooperate with the diverse functions of the image software processor 205 to perform image shooting and image processing (or a physical shooting button can be used for shooting). The image processed by the image software processor 205 can be displayed on the display module 204.

[0281] <Tenth Embodiment>

[0282] Please refer to Figure 19 , which is a schematic diagram of one side of an electronic device according to the tenth embodiment of the present disclosure.

[0283] In the present embodiment, the electronic device 300 is a smart phone. The electronic device 300 includes the imaging device 100, the imaging device 100e, the imaging device 100f, the flash module 301, the focus auxiliary module, the image signal processor, the display module and the image software processor (not shown) of the eighth embodiment. The imaging device 100, the imaging device 100e and the imaging device 100f are all arranged on the same side of the electronic device 300, and the display module is arranged on the other side of the electronic device 300. Moreover, the imaging device 100e and the imaging device 100f can both include the optical imaging lens disclosed in the present invention and can both have a similar structural configuration as the imaging device 100, which will not be described in detail here.

[0284] The imaging device 100 is a wide-angle imaging device, the imaging device 100e is an ultra-wide-angle imaging device, and the imaging device 100f is a telephoto imaging device with a light path turn. The imaging devices 100, 100e, and 100f of this embodiment have different viewing angles, so that the electronic device 300 can provide different magnifications to achieve an optical zoom shooting effect. The light path turn configuration of the imaging device 100f can have, for example, a similar Figures 22 to 24 The structure of Figures 22 to 24The description thereof will not be repeated herein. The above electronic device 300 takes the example of including a plurality of imaging devices 100, 100e, and 100f, but the number and configuration of the imaging devices are not intended to limit the present disclosure. When the user takes a picture of a subject, the electronic device 300 uses the imaging device 100, the imaging device 100e, or the imaging device 100f to collect light and take an image, activates the flash module 301 to perform fill light, and performs subsequent processing in a manner similar to the foregoing embodiments, which will not be repeated herein.

[0285] <Eleventh Embodiment>

[0286] Please refer to Figure 20 , which shows a perspective view of one side of an electronic device according to the eleventh embodiment of the present disclosure.

[0287] In this embodiment, the electronic device 400 is a smart phone. The electronic device 400 includes the imaging devices 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q, 100r, the flash module 401, the focus assist module, the image signal processor, the display module, and an image software processor (not shown) of the eighth embodiment. The imaging devices 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r are all disposed on the same side of the electronic device 400, and the display module is disposed on the other side of the electronic device 400. Moreover, the imaging devices 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r may all include the optical imaging lens of the present disclosure and may all have a structural configuration similar to that of the imaging device 100, which will not be repeated herein.

[0288] The imaging device 100 is a wide-angle imaging device, the imaging device 100i is a telephoto imaging device with a turning optical path, the imaging device 100j is a telephoto imaging device with a turning optical path, the imaging device 100k is a wide-angle imaging device, the imaging device 100m is an ultra-wide-angle imaging device, the imaging device 100n is an ultra-wide-angle imaging device, the imaging device 100p is a telephoto imaging device, the imaging device 100q is a telephoto imaging device, and the imaging device 100r is a time-of-flight ranging imaging device. The imaging devices 100, 100i, 100j, 100k, 100m, 100n, 100p and 100q of this embodiment have different viewing angles, so that the electronic device 400 can provide different magnifications to achieve an optical zoom shooting effect. In addition, the imaging device 100r can obtain depth information of the image. Figures 22 to 24 The structure of Figures 22 to 24 The electronic device 400 is taken as an example including a plurality of imaging devices 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r, but the number and configuration of the imaging devices are not intended to limit the present disclosure. When a user photographs a subject, the electronic device 400 utilizes the imaging device 100, the imaging device 100i, the imaging device 100j, the imaging device 100k, the imaging device 100m, the imaging device 100n, the imaging device 100p, the imaging device 100q, or the imaging device 100r to focus light and capture an image, activates the flash module 401 for fill light, and performs subsequent processing in a manner similar to the aforementioned embodiment, which is not described in detail here.

[0289] The imaging device disclosed herein is not limited to being used in smart phones. The imaging device can be applied to mobile focus systems as required, and has the characteristics of excellent aberration correction and good imaging quality. For example, the imaging device can be widely used in electronic devices such as three-dimensional (3D) image capture, digital cameras, mobile products, tablet computers, smart TVs, network monitoring equipment, driving recorders, reversing imaging devices, multi-lens devices, identification systems, somatosensory game consoles, drones, wearable products, and portable image recorders. The aforementioned electronic devices are only exemplary examples of the actual application of the present disclosure, and do not limit the scope of application of the imaging device disclosed herein.

[0290] Although the present disclosure is disclosed as above with the aforementioned preferred embodiments, it is not intended to limit the present disclosure. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the scope of patent protection of the present disclosure shall be based on that defined in the claims attached to this specification.

Claims

1. An optical imaging lens, characterized in that, it comprises five lenses, and the five 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 and a fifth lens, and the five lenses respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction; wherein, the first lens has a positive refractive power, the object-side surface of the first lens is convex near the optical axis, the image-side surface of the first lens is concave near the optical axis, the object-side surface of the second lens is concave near the optical axis, the object-side surface of the third lens is concave near the optical axis, the fourth lens has a positive refractive power, the object-side surface of the fourth lens is convex near the optical axis, the image-side surface of the fourth lens is concave near the optical axis, the object-side surface of the fifth lens is convex near the optical axis, and at least one surface of at least one lens in the optical imaging lens has at least one critical point at an off-axis position; wherein, the radius of curvature of the image-side surface of the first lens is R2, the radius of curvature of the object-side surface of the second lens is R3, the radius of curvature of the object-side surface of the third lens is R5, and the thickness of the third lens on the optical axis is CT3, and they satisfy the following conditions: R3 / R2 < -1.1; and -25 < R5 / CT3 < -5.

0.

2. The optical imaging lens according to claim 1, characterized in that, the radius of curvature of the image-side surface of the first lens is R2, the radius of curvature of the object-side surface of the second lens is R3, the radius of curvature of the object-side surface of the third lens is R5, and the thickness of the third lens on the optical axis is CT3, and they satisfy the following conditions: -9.0 < R3 / R2 < -1.2; and -20 < R5 / CT3 < -5.

0.

3. The optical imaging lens according to claim 2, characterized in that, the radius of curvature of the image-side surface of the first lens is R2, the radius of curvature of the object-side surface of the second lens is R3, the radius of curvature of the object-side surface of the third lens is R5, and the thickness of the third lens on the optical axis is CT3, and they satisfy the following conditions: -5.12 ≤ R3 / R2 ≤ -1.39; and -12.14 ≤ R5 / CT3 ≤ -6.

57.

4. The optical imaging lens according to claim 1, characterized in that, 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, and the thickness of the fifth lens on the optical axis is CT5, and they satisfy the following conditions: 1.0 < (CT1 + CT2 + CT4 + CT5) / CT3 < 4.

5.

5. The optical imaging lens according to claim 1, characterized in that, the thickness of the third lens on the optical axis is CT3, and the distance parallel to the optical axis from the maximum effective radius position of the object-side surface of the third lens to the maximum effective radius position of the image-side surface of the third lens is ET3, and they satisfy the following conditions: 1.3 < CT3 / ET3 < 2.

4.

6. The optical imaging lens according to claim 1, characterized in that, The radius of curvature of the image-side surface of the fourth lens is R8, and the radius of curvature of the object-side surface of the fifth lens is R9, which satisfy the following conditions: 6.5 < R8 / R9 < 14.

7. The optical imaging lens according to claim 1, characterized in that, the combined focal length of the first lens and the second lens is f12, and the combined focal length of the third lens, the fourth lens and the fifth lens is f345, which satisfy the following conditions: 0.25 < f12 / f345 < 2.

5.

8. The optical imaging lens according to claim 1, characterized in that, the second lens has a negative refractive power; wherein, the focal length of the second lens is f2, and the focal length of the fourth lens is f4, which satisfy the following conditions: f2 / f4 < -0.

80.

9. The optical imaging lens according to claim 1, characterized in that, the image-side surface of the third lens is convex near the optical axis; wherein, the radius of curvature of the object-side surface of the third lens is R5, the radius of curvature of the image-side surface of the third lens is R6, and the focal length of the third lens is f3, which satisfy the following conditions: (|R5| + |R6|) / |f3| < 0.

60.

10. The optical imaging lens according to claim 1, characterized in that, the vertical distance between the concave critical point of the object-side surface of the fourth lens and the optical axis is Yc41, and the vertical distance between the convex critical point of the image-side surface of the fourth lens and the optical axis is Yc42. The object-side surface of the fourth lens has at least one concave critical point off the axis, and the image-side surface of the fourth lens has at least one convex critical point off the axis, which satisfy the following conditions: 0.70 < Yc41 / Yc42 < 1.

2.

11. The optical imaging lens according to claim 1, characterized in that, half of the maximum viewing angle of the optical imaging lens 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 fifth lens is Y52, which satisfy the following conditions: 42.0 degrees < HFOV < 51.0 degrees; and 2.7 < Y52 / Y11 < 4.0; wherein, the vertical distance between the concave critical point of the object-side surface of the fifth lens and the optical axis is Yc51, the maximum effective radius of the object-side surface of the fifth lens is Y51, and the object-side surface of the fifth lens has at least one concave critical point off the axis, which satisfy the following conditions: 0.20 < Yc51 / Y51 < 0.

60.

12. An imaging device, characterized in that, comprising: the optical imaging lens according to claim 1; and an electronic photosensitive element disposed on an imaging surface of the optical imaging lens.

13. An electronic device, characterized in that, comprising: the imaging device according to claim 12.

14. An optical imaging lens, characterized in that, comprising five lenses, and the five lenses are sequentially the first lens, the second lens, the third lens, the fourth lens and the fifth lens along the optical path from the object side to the image side, and the five lenses respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction; Wherein, the image-side surface of the first lens is concave near the optical axis, the object-side surface of the second lens is concave near the optical axis, the object-side surface of the third lens is concave near the optical axis, the fourth lens has a positive refractive power, the object-side surface of the fourth lens is convex near the optical axis, the image-side surface of the fourth lens is concave near the optical axis, the image-side surface of the fifth lens is concave near the optical axis, and at least one surface of at least one lens in the optical imaging lens has at least one critical point off the axis; Wherein, the radius of curvature of the image-side surface of the first lens is R2, the radius of curvature of the object-side surface of the second lens is R3, the radius of curvature of the object-side surface of the third lens is R5, and the thickness of the third lens on the optical axis is CT3, which satisfies the following conditions: R3 / R2 < -1.1; and -16 < R5 / CT3 < -5.

0.

15. The optical imaging lens according to claim 14, characterized in that the Abbe number of the first lens is V1, the Abbe number of the second lens is V2, the distance from the object-side surface of the first lens to an imaging surface on the optical axis is TL, the maximum imaging height of the optical imaging lens is ImgH, and the F-number of the optical imaging lens is Fno, which satisfies the following conditions: 2.85 < V1 / V2 < 4.50; 1.1 < TL / ImgH < 1.5; and 1.5 < Fno < 2.

5.

16. The optical imaging lens according to claim 14, characterized in that 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 second lens and the third lens on the optical axis is T23, and the distance between the third lens and the fourth lens on the optical axis is T34, which satisfies the following conditions: 4.0 < (CT2 + CT3 + CT4) / (T23 + T34) < 15.

17. The optical imaging lens according to claim 14, characterized in that the thickness of the third lens on the optical axis is CT3, and the thickness of the fourth lens on the optical axis is CT4, which satisfies the following conditions: 1.1 < CT3 / CT4 < 3.

5.

18. The optical imaging lens according to claim 14, characterized in that the focal length of the third lens is f3, the focal length of the fourth lens is f4, and the focal length of the fifth lens is f5, which satisfies the following conditions: 0 < f4 / (|f3| + |f5|) < 0.

12.

19. The optical imaging lens according to claim 14, characterized in that the first lens has a positive refractive power, and the object-side surface of the first lens is convex near the optical axis; Wherein, 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, the radius of curvature of the object-side surface of the fourth lens is R7, the radius of curvature of the image-side surface of the fourth lens is R8, and the focal length of the first lens is f1, which satisfies the following conditions: 1.0 < (R1 + R2) / f1 < 2.3; and -3.0 < (R7 + R8) / (R7 - R8) < -1.4。 20. The optical imaging lens according to claim 14, characterized in that, the second lens has a negative refractive power; wherein, the radius of curvature of the object side surface of the second lens is R3, the focal length of the second lens is f2, and they satisfy the following conditions: 0 < R3 / f2 < 6.

0.

21. The optical imaging lens according to claim 14, characterized in that, the maximum effective radius of the image side surface of the fifth lens is Y52, the radius of curvature of the image side surface of the fifth lens is R10, and they satisfy the following conditions: 3.5 < Y52 / R10 < 4.5; wherein, the perpendicular distance between the convex critical point of the image side surface of the fifth lens and the optical axis is Yc52, and the image side surface of the fifth lens has at least one convex critical point at the off-axis position satisfying the following conditions: 0.30 < Yc52 / Y52 < 0.70.

Images