Imaging lens and electronic device

Abstract

An imaging lens and an electronic device, the imaging lens has an optical axis and includes a lens element, a reflective element and a light-shielding element, and the optical axis passes through the lens element. The reflective element is disposed on an object side or an image side of the lens element, and includes a first reflective surface. The light-shielding element is opaque, the light-shielding element is disposed corresponding to the lens element or the reflective element, and the light-shielding element includes a first light-shielding surface and a plurality of protruding structures. The first light-shielding surface is disposed between the lens element and the reflective element. The protruding structures are disposed on the first light-shielding surface and arranged in a two-dimensional array, and the protruding structures are integrally formed with the first light-shielding surface. In this way, it helps to weaken stray light.

Description

Technical Field

[0001] This disclosure relates to an imaging lens, and more particularly to an imaging lens used in electronic devices. Background Technology

[0002] In recent years, portable electronic devices have developed rapidly, such as smart electronic devices and tablet computers, which have become ubiquitous in modern life. Imaging lenses mounted on these devices have also flourished. However, as technology advances, users' demands for the quality of imaging lenses are increasing. Therefore, developing an imaging lens that can reduce stray light has become an important and urgent problem for the industry. Utility Model Content

[0003] This disclosure provides an imaging lens and electronic device that reduces stray light through a first light-shielding surface of a light-shielding element and a raised structure.

[0004] According to one embodiment of this disclosure, an imaging lens is provided, having an optical axis and including a lens element, a reflective element, and a light-shielding element, with the optical axis passing through the lens element. The reflective element is disposed on an object side or an image side of the lens element and includes a first reflective surface. The first reflective surface is used to deflect the optical axis. The light-shielding element is opaque and is disposed corresponding to the lens element or the reflective element, and includes a first light-shielding surface and a plurality of protruding structures. The first light-shielding surface is disposed between the lens element and the reflective element. The protruding structures are disposed on the first light-shielding surface and arranged in a two-dimensional array, the protruding structures are integrally formed with the first light-shielding surface, and a cross-section at the bottom of each protruding structure is circular, wherein each protruding structure extends from the bottom in a direction away from the first light-shielding surface and forms an arc surface at the top of each protruding structure. In a cross-section coinciding with the optical axis, the first light-shielding surface and the optical axis have a first included angle, θa, which satisfies the following condition: 0.86 <sinθa≤1。

[0005] The imaging lens according to the embodiment described above, wherein the first included angle is θa, satisfies the following condition: 0.96 <sinθa≤1。

[0006] According to the imaging lens of the embodiment described above, the first angle between the first light-blocking surface and the optical axis can vary with the distance between the first light-blocking surface and the optical axis.

[0007] According to the imaging lens of the embodiment described above, the first light-shielding surface faces the reflective element, the first light-shielding surface may include a reverse oblique portion, and the reverse oblique portion gradually moves away from the reflective element in a direction away from the optical axis.

[0008] According to the imaging lens of the embodiment described above, the first included angle is located between the anti-oblique portion and the optical axis, and the first included angle is θa, which can satisfy the following condition: -0.5≤cosθa<0.

[0009] According to the imaging lens of the embodiment described above, the protruding structures are arranged in an array facing away from the optical axis. On a cross-section aligning with the optical axis, the top of the protruding structure closest to the optical axis is used as a reference point. Along the direction perpendicular to the optical axis, the distance between the reference point and the optical axis is X. Along the direction parallel to the optical axis, the distance between the reference point and the reflecting element or lens element facing the first light-shielding surface is Y. This distance satisfies the following condition: 0.03 <Y / X<0.76。

[0010] The imaging lens according to the embodiment described above may further be arranged in an array along the direction surrounding the optical axis.

[0011] According to the imaging lens of the embodiment described above, the height of each protruding structure is H, which can satisfy the following condition: 6μm <H<102μm。

[0012] According to the imaging lens of the embodiment described above, the height of each protrusion structure is H, and on the cross section of the coincident optical axis, the height difference between any two adjacent protrusion structures is ΔH, which can satisfy the following condition: 0.05 < ΔH / H < 0.55.

[0013] According to the imaging lens of the embodiment described above, in the cross section of the coincident optical axis, the height difference between any two adjacent convex structures is ΔH, which can satisfy the following condition: 1.5μm<ΔH<29μm.

[0014] In the imaging lens according to the embodiment described above, the distance between any two adjacent protrusions in the protrusion structure can be greater than the height of each protrusion structure.

[0015] According to the imaging lens of the embodiment described above, the light-shielding element may further include a second light-shielding surface, which may include a plurality of strip structures arranged in an array along the direction surrounding the optical axis, and the cross-section of each strip structure is triangular.

[0016] According to the imaging lens of the embodiment described above, in the cross-section of the coincident optical axis, the second light-blocking surface and the optical axis have a second included angle, θb, which satisfies the following condition: 0.5 <cosθb<1。

[0017] The imaging lens according to the embodiment described above may further include a second reflective surface for reflexing the optical axis.

[0018] According to the imaging lens of the embodiment described above, the reflecting element may further include an incident surface and an exit surface, with the optical axis entering the reflecting element from the incident surface and exiting the reflecting element from the exit surface. The incident surface and the exit surface may be the same surface.

[0019] The imaging lens according to the embodiment described above may have at least two lens elements, and the distance between the lens elements may be variable.

[0020] According to one embodiment of this disclosure, an imaging lens is provided, having an optical axis and including a lens element, a reflective element, and a light-shielding element, with the optical axis passing through the lens element. The reflective element is disposed on an object side or an image side of the lens element and includes a first reflective surface. The first reflective surface is used to deflect the optical axis. The light-shielding element is opaque and is disposed corresponding to the lens element or the reflective element, and includes a first light-shielding surface and a plurality of protruding structures. The first light-shielding surface is disposed between the lens element and the reflective element. The protruding structures are disposed on the first light-shielding surface and arranged in a two-dimensional array, the protruding structures are integrally formed with the first light-shielding surface, and each protruding structure extends from a bottom in a direction away from the first light-shielding surface. In a cross-section coinciding with the optical axis, the first light-shielding surface and the optical axis have a first included angle, θa, which satisfies the following condition: 0.86 <sinθa≤1。

[0021] The imaging lens according to the embodiment described above, wherein the first included angle is θa, satisfies the following condition: 0.96 <sinθa≤1。

[0022] According to the imaging lens of the embodiment described above, the first angle between the first light-blocking surface and the optical axis can vary with the distance between the first light-blocking surface and the optical axis.

[0023] According to the imaging lens of the embodiment described above, the first light-shielding surface faces the reflective element, the first light-shielding surface may include a reverse oblique portion, and the reverse oblique portion gradually moves away from the reflective element in a direction away from the optical axis.

[0024] According to the imaging lens of the embodiment described above, the first included angle is located between the anti-oblique portion and the optical axis, and the first included angle is θa, which can satisfy the following condition: -0.5≤cosθa<0.

[0025] According to the imaging lens of the embodiment described above, the protruding structures are arranged in an array facing away from the optical axis. On a cross-section aligning with the optical axis, the top of the protruding structure closest to the optical axis is used as a reference point. Along the direction perpendicular to the optical axis, the distance between the reference point and the optical axis is X. Along the direction parallel to the optical axis, the distance between the reference point and the reflecting element or lens element facing the first light-shielding surface is Y. This distance satisfies the following condition: 0.03 <Y / X<0.76。

[0026] The imaging lens according to the embodiment described above may further be arranged in an array along the direction surrounding the optical axis.

[0027] According to the imaging lens of the embodiment described above, the height of each protruding structure is H, which can satisfy the following condition: 6μm <H<102μm。

[0028] According to the imaging lens of the embodiment described above, the height of each protrusion structure is H, and on the cross section of the coincident optical axis, the height difference between any two adjacent protrusion structures is ΔH, which can satisfy the following condition: 0.05 < ΔH / H < 0.55.

[0029] According to the imaging lens of the embodiment described above, in the cross section of the coincident optical axis, the height difference between any two adjacent convex structures is ΔH, which can satisfy the following condition: 1.5μm<ΔH<29μm.

[0030] In the imaging lens according to the embodiment described above, the distance between any two adjacent protrusions in the protrusion structure can be greater than the height of each protrusion structure.

[0031] According to the imaging lens of the embodiment described above, the light-shielding element may further include a second light-shielding surface, which may include a plurality of strip structures arranged in an array along the direction surrounding the optical axis, and the cross-section of each strip structure is triangular.

[0032] According to the imaging lens of the embodiment described above, in the cross-section of the coincident optical axis, the second light-blocking surface and the optical axis have a second included angle, θb, which satisfies the following condition: 0.5 <cosθb<1。

[0033] The imaging lens according to the embodiment described above may further include a second reflective surface for reflexing the optical axis.

[0034] According to the imaging lens of the embodiment described above, the reflecting element may further include an incident surface and an exit surface, with the optical axis entering the reflecting element from the incident surface and exiting the reflecting element from the exit surface. The incident surface and the exit surface may be the same surface.

[0035] According to one embodiment of this disclosure, an imaging lens is provided, having an optical axis and including an optical element, a photosensitive element, and a light-shielding element. The optical element is light-transmitting, and the optical axis passes through the optical element. The photosensitive element is used to sense light, and is correspondingly disposed with respect to the optical element. The light-shielding element is opaque, and is disposed corresponding to either the optical element or the photosensitive element, and includes a first light-shielding surface and a plurality of protruding structures. The first light-shielding surface is disposed between the optical element and the photosensitive element. The protruding structures are disposed on the first light-shielding surface and arranged in a two-dimensional array, the protruding structures are integrally formed with the first light-shielding surface, and a cross-section at the bottom of each protruding structure is circular, wherein each protruding structure extends from the bottom in a direction away from the first light-shielding surface, and forms an arc surface at the top of each protruding structure. In a cross-section coinciding with the optical axis, the first light-shielding surface and the optical axis have a first included angle, θa, which satisfies the following condition: 0.86 <sinθa≤1。

[0036] The imaging lens according to the embodiment described above, wherein the first included angle is θa, satisfies the following condition: 0.96 <sinθa≤1。

[0037] According to the imaging lens of the embodiment described above, the first angle between the first light-blocking surface and the optical axis can vary with the distance between the first light-blocking surface and the optical axis.

[0038] According to the imaging lens of the embodiment described above, the first light-shielding surface faces the optical element, the first light-shielding surface may include a reverse oblique portion, and the reverse oblique portion gradually moves away from the optical element in a direction away from the optical axis.

[0039] According to the imaging lens of the embodiment described above, the first included angle is located between the anti-oblique portion and the optical axis, and the first included angle is θa, which can satisfy the following condition: -0.5≤cosθa<0.

[0040] According to the imaging lens of the embodiment described above, the protruding structures are arranged in an array facing away from the optical axis. On a cross-section aligning with the optical axis, the top of the protruding structure closest to the optical axis is used as a reference point. Along the direction perpendicular to the optical axis, the distance between the reference point and the optical axis is X. Along the direction parallel to the optical axis, the distance between the reference point and the optical element facing the first light-shielding surface is Y2, which satisfies the following condition: 0.03 <Y2 / X<0.76。

[0041] The imaging lens according to the embodiment described above may further be arranged in an array along the direction surrounding the optical axis.

[0042] According to the imaging lens of the embodiment described above, the height of each protruding structure is H, which can satisfy the following condition: 6μm <H<102μm。

[0043] According to the imaging lens of the embodiment described above, the height of each protrusion structure is H, and on the cross section of the coincident optical axis, the height difference between any two adjacent protrusion structures is ΔH, which can satisfy the following condition: 0.05 < ΔH / H < 0.55.

[0044] In the imaging lens according to the embodiment described above, the distance between any two adjacent protrusions in the protrusion structure can be greater than the height of each protrusion structure.

[0045] According to the imaging lens of the embodiment described above, the light-shielding element may further include a second light-shielding surface, which may include a plurality of strip structures arranged in an array along the direction surrounding the optical axis, and the cross-section of each strip structure is triangular.

[0046] According to the imaging lens of the embodiment described above, in the cross-section of the coincident optical axis, the second light-blocking surface and the optical axis have a second included angle, θb, which satisfies the following condition: 0.5 <cosθb<1。

[0047] According to one embodiment of this disclosure, an imaging lens is provided, having an optical axis and including a lens element and a light-shielding element, with the optical axis passing through the lens element. The light-shielding element is opaque, disposed corresponding to the lens element, and includes a first light-shielding surface and a plurality of protruding structures. The first light-shielding surface faces an image-side direction and is disposed adjacent to the lens element. The protruding structures are disposed on the first light-shielding surface and arranged in a two-dimensional array, the protruding structures being integrally formed with the first light-shielding surface, and a circular cross-section at the bottom of each protruding structure, wherein each protruding structure extends from the bottom in a direction away from the first light-shielding surface, and forms an arc surface at the top of each protruding structure. In a cross-section coinciding with the optical axis, the first light-shielding surface and the optical axis have a first included angle, θa, which satisfies the following condition: 0.86 <sinθa≤1。

[0048] The imaging lens according to the embodiment described above, wherein the first included angle is θa, satisfies the following condition: 0.96 <sinθa≤1。

[0049] According to the imaging lens of the embodiment described above, the first angle between the first light-blocking surface and the optical axis can vary with the distance between the first light-blocking surface and the optical axis.

[0050] According to the imaging lens of the embodiment described above, the first light-shielding surface faces the lens element, the first light-shielding surface may include a reverse oblique portion, and the reverse oblique portion gradually moves away from the lens element in a direction away from the optical axis.

[0051] According to the imaging lens of the embodiment described above, the first included angle is located between the anti-oblique portion and the optical axis, and the first included angle is θa, which can satisfy the following condition: -0.5≤cosθa<0.

[0052] According to the imaging lens of the embodiment described above, the protruding structures are arranged in an array facing away from the optical axis. On a cross-section aligning with the optical axis, taking the top of the protruding structure closest to the optical axis as a reference point, the distance between the reference point and the optical axis in the direction perpendicular to the optical axis is X, and the distance between the reference point and the lens element facing the first light-shielding surface in the direction parallel to the optical axis is Y. This satisfies the following condition: 0.03 <Y / X<0.76。

[0053] The imaging lens according to the embodiment described above may further be arranged in an array along the direction surrounding the optical axis.

[0054] According to the imaging lens of the embodiment described above, the height of each protruding structure is H, which can satisfy the following condition: 6μm <H<102μm。

[0055] According to the imaging lens of the embodiment described above, the height of each protrusion structure is H, and on the cross section of the coincident optical axis, the height difference between any two adjacent protrusion structures is ΔH, which can satisfy the following condition: 0.05 < ΔH / H < 0.55.

[0056] According to the imaging lens of the embodiment described above, in the cross section of the coincident optical axis, the height difference between any two adjacent convex structures is ΔH, which can satisfy the following condition: 1.5μm<ΔH<29μm.

[0057] In the imaging lens according to the embodiment described above, the distance between any two adjacent protrusions in the protrusion structure can be greater than the height of each protrusion structure.

[0058] According to the imaging lens of the embodiment described above, the light-shielding element may further include a second light-shielding surface, which may include a plurality of strip structures arranged in an array along the direction surrounding the optical axis, and the cross-section of each strip structure is triangular.

[0059] According to the imaging lens of the embodiment described above, in the cross-section of the coincident optical axis, the second light-blocking surface and the optical axis have a second included angle, θb, which satisfies the following condition: 0.5 <cosθb<1。

[0060] According to one embodiment of the present disclosure, an electronic device is provided, including an imaging lens as described in the foregoing embodiments. Attached Figure Description

[0061] Figure 1AA schematic diagram of an imaging lens in a first embodiment according to the first embodiment of the present disclosure is shown;

[0062] Figure 1B Drawing according to Figure 1A A partial enlarged view of the imaging lens in the first embodiment of the first implementation;

[0063] Figure 1C Drawing according to Figure 1A A perspective view of the lens element and the light-shielding element in the first embodiment of the first implementation;

[0064] Figure 1D Drawing according to Figure 1A A partially enlarged view of the light-shielding element in the first embodiment of the first implementation;

[0065] Figure 1E Drawing according to Figure 1D A schematic diagram of the light-shielding element in the first embodiment of the first implementation;

[0066] Figure 1F Drawing according to Figure 1E A cross-sectional view of the light-shielding element along section line 1F-1F in the first embodiment of the first implementation;

[0067] Figure 1G A partially enlarged view of the light-shielding element in a second embodiment according to the first embodiment of this disclosure is shown;

[0068] Figure 1H Drawing according to Figure 1G A cross-sectional view of the light-shielding element in the second embodiment of the first implementation;

[0069] Figure 1I A partially enlarged view of the imaging lens in a third embodiment of the first embodiment according to this disclosure is shown;

[0070] Figure 1J Drawing according to Figure 1I A schematic diagram of the photosensitive element and the light-blocking element in the third embodiment of the first embodiment;

[0071] Figure 2A A schematic diagram of an imaging lens in the first embodiment of the second embodiment according to this disclosure is shown;

[0072] Figure 2B Drawing according to Figure 2A A partial enlarged view of the imaging lens in the first embodiment of the second implementation;

[0073] Figure 2C Drawing according to Figure 2A A partial perspective view of the imaging lens in the first embodiment of the second implementation;

[0074] Figure 2D A schematic diagram illustrating an imaging lens in a second embodiment according to the second embodiment of this disclosure;

[0075] Figure 2E Drawing according to Figure 2D A perspective view of the lens element and the light-shielding element in the second embodiment of the second implementation;

[0076] Figure 3A A schematic diagram of an imaging lens in the first embodiment of the third embodiment according to this disclosure is shown;

[0077] Figure 3B Drawing according to Figure 3A A partially enlarged view of the light-shielding element in the first embodiment of the third implementation;

[0078] Figure 4A A schematic diagram of an electronic device according to the fourth embodiment of this disclosure is shown;

[0079] Figure 4B Drawing according to Figure 4A Another schematic diagram of the electronic device in the fourth embodiment;

[0080] Figure 4C Drawing according to Figure 4A A schematic diagram of an image captured by an electronic device in the fourth embodiment;

[0081] Figure 4D Drawing according to Figure 4A Another image diagram captured by the electronic device in the fourth embodiment;

[0082] Figure 4E Drawing according to Figure 4A Another image diagram captured by the electronic device in the fourth embodiment;

[0083] Figure 5 A schematic diagram of an electronic device according to the fifth embodiment of this disclosure is shown;

[0084] Figure 6A A schematic diagram of the vehicle tool according to the sixth embodiment of this disclosure is shown;

[0085] Figure 6B Drawing according to Figure 6A Another schematic diagram of the vehicle tools in the sixth embodiment; and

[0086] Figure 6C Drawing according to Figure 6A Another schematic diagram of the vehicle tool in the sixth embodiment.

[0087] [Symbol Explanation]

[0088] 10,20: Electronic devices

[0089] 11: User Interface

[0090] 12,21: Ultra-wide-angle imaging lens

[0091] 13: High-resolution imaging lens

[0092] 14, 23, 24: Telephoto Imaging Lens

[0093] 15: Imaging signal processing element

[0094] 22: Wide-angle imaging lens

[0095] 25: Flash module

[0096] 26: TOF Module

[0097] 30: Vehicles and Tools

[0098] 100, 200, 300, 31: Imaging lens

[0099] 101,201: First telescope tube

[0100] 102, 202: Second lens tube

[0101] 103: Third tube

[0102] 110, 110a, 110b, 210a, 210b, 210c, 210d, 210e, 210f, 310a, 310b: Lens elements; 120, 220: Reflective elements

[0103] 121,221: First reflecting surface

[0104] 122: Second reflecting surface

[0105] 123: Third reflecting surface

[0106] 130, 140, 160, 230, 240, 330: Light-shielding elements

[0107] 131,141,161,231,241,331: First light-blocking surface

[0108] 132,142,162,232,242,332: Protruding structures

[0109] 133, 134, 143, 144: Reverse oblique part

[0110] 135, 136, 145: Second light-shielding surface

[0111] 137, 147: Strip-like structure

[0112] 150: Photosensitive element

[0113] 2201: Incident surface

[0114] 2202: Exit surface

[0115] B: Reference point

[0116] H, H2: Height

[0117] ΔH: Height difference

[0118] I1, I2, I3, I4: External space information

[0119] IMG: Imaging surface

[0120] X, X2, Y, Y2: Spacing

[0121] X’: Optical axis

[0122] θ: Viewing angle

[0123] θa, θa1, θa2, θa3: First included angle

[0124] θb1, θb2: Second included angle Detailed implementation manners

[0125] The present disclosure provides an imaging lens having an optical axis and including a lens element and a light-shielding element, and the optical axis passes through the lens element. The light-shielding element is light-impervious, and the light-shielding element includes a first light-shielding surface and a plurality of convex structures. The convex structures are disposed on the first light-shielding surface and arranged in a two-dimensional array form. The convex structures are integrally formed with the first light-shielding surface, and each convex structure extends and protrudes away from the first light-shielding surface from a bottom. Among them, on a cross-section coinciding with the optical axis, there is a first included angle between the first light-shielding surface and the optical axis, and the first included angle is θa, which satisfies the following condition: 0.86 < sinθa ≤ 1. Specifically, the two-dimensional array form can be a linear array, a curved array, a circular array, etc., and the convex structures arranged in the two-dimensional array form can form a light trap structure. Thereby, it helps to weaken stray light. When the first included angle satisfies the condition, it is beneficial for stray light to enter the convex structures and the stray light is weakened between the convex structures, which helps to improve the forming quality of the convex structures. Furthermore, the first included angle is θa, which can satisfy the following condition: 0.96 < sinθa ≤ 1.

[0126] The light-shielding element can be disposed corresponding to the lens element. The first light-shielding surface of the light-shielding element faces an image side direction, and the first light-shielding surface and the lens element can be adjacently disposed.

[0127] Furthermore, the imaging lens may further include a reflection element. The reflection element may be disposed on an object side or an image side of the lens element, and may include a first reflection surface. The first reflection surface may be used to deflect the optical axis. In addition, the light shielding element may be disposed corresponding to the lens element or the reflection element, and the first light shielding surface may be disposed between the lens element and the reflection element.

[0128] Furthermore, a cross-section of the bottom of each convex structure may be circular. Each convex structure extends and protrudes away from the first light shielding surface from the bottom, and an arc surface is formed at a top of each convex structure. Thereby, the circular cross-section of the bottom of each convex structure can weaken stray light between the convex structures.

[0129] A first included angle between the first light shielding surface and the optical axis may vary with the distance from the optical axis. Thereby, it helps to improve the influence of stray light with various incident directions. Specifically, the first included angle between the first light shielding surface and the optical axis is not a fixed value.

[0130] Furthermore, the first light shielding surface faces the reflection element. The first light shielding surface may include an inclined portion, and the inclined portion gradually moves away from the reflection element in a direction away from the optical axis. Thereby, it helps to guide stray light outside the reflection element.

[0131] The first included angle is between the inclined portion and the optical axis. The first included angle is θa, and it may satisfy the following condition: -0.5 ≤ cosθa < 0.

[0132] The convex structures are arranged in an array in a direction away from the optical axis. On a cross-section coinciding with the optical axis, taking the top of the convex structure closest to the optical axis as a reference point, in a direction perpendicular to the optical axis, the distance between the reference point and the optical axis is X, and in a direction parallel to the optical axis, the distance between the reference point and the reflection element or the lens element towards which the first light shielding surface faces is Y, and it may satisfy the following condition: 0.03 < Y / X < 0.76. When the setting position of the convex structure satisfies this condition, it helps to make stray light enter the light trap structure formed by the convex structures arranged in a two-dimensional array form, thereby enhancing the effect of weakening stray light.

[0133] Furthermore, the convex structures may be further arranged in an array along a direction surrounding the optical axis. Thereby, the convex structures arranged in a two-dimensional array form help to weaken stray light incident from different directions, and can enhance the effect of the light trap structure in destroying stray light.

[0134] The height of each convex structure is H, and it may satisfy the following condition: 6μm < H < 102μm. Thereby, the light trap structure can have sufficient ability to capture stray light. Specifically, when the first light shielding surface is an inclined surface, the height is calculated based on the central axis of each convex structure.

[0135] The height of each convex structure is H. On the cross-section coinciding with the optical axis, the height difference between any two adjacent convex structures is ΔH, which can satisfy the following conditions: 0.05 < ΔH / H < 0.55. Specifically, an appropriate height difference ratio helps to capture stray light.

[0136] On the cross-section coinciding with the optical axis, the height difference between any two adjacent convex structures is ΔH, which can satisfy the following conditions: 1.5 μm < ΔH < 29 μm. Specifically, a moderate height difference helps to make stray light enter between the convex structures. Thereby, the stray light can be attenuated by the convex structures.

[0137] The spacing distance between any two adjacent convex structures can be greater than the height of each convex structure. Thereby, it helps to make the stray light reflect between the convex structures, and then attenuate the stray light. Specifically, the spacing distance between adjacent convex structures is calculated based on the central axis.

[0138] The light-shielding element may further include a second light-shielding surface. The second light-shielding surface may include a plurality of strip structures. The strip structures are arranged in an array along the direction around the optical axis, and the cross-section of each strip structure is triangular. Thereby, it helps to attenuate different forms of stray light.

[0139] On the cross-section coinciding with the optical axis, there is a second included angle θb between the second light-shielding surface and the optical axis. The second included angle can satisfy the following conditions: 0.5 < cosθb < 1. Specifically, when the second included angle between the second light-shielding surface and the optical axis is small, it is not easy to arrange the convex structures. Therefore, the strip structures can be used to avoid the generation of stray light on the second light-shielding surface. Specifically, the combination of the inclined part and the second light-shielding surface can form a structure similar to a groove. Moreover, the design of the combination of the light-shielding element with the inclined part and the second light-shielding surface makes it easier to design the bearing mechanism for the light-shielding element to be lapped with other elements.

[0140] The reflecting element may further include a second reflecting surface, which is used to turn the optical axis again. Thereby, it is beneficial to compress the volume of the imaging lens.

[0141] The reflecting element may further include an incident surface and an exit surface. The optical axis enters the reflecting element from the incident surface and leaves the reflecting element from the exit surface. Among them, the incident surface and the exit surface can be the same surface. Thereby, it is beneficial to compress the volume of the imaging lens.

[0142] The number of lens elements can be at least two, and the distance between the lens elements can be variable. Thereby, the imaging lens can have the ability to change the shooting focal length.

[0143] The present disclosure provides an imaging lens having an optical axis and including an optical element, a photosensitive element, and a light-shielding element. The optical element is light-transmissive, and the optical axis passes through the optical element. The photosensitive element is used for sensing light, and the photosensitive element is disposed corresponding to the optical element. The light-shielding element is light-impervious, the light-shielding element is disposed corresponding to the optical element or the photosensitive element, and the light-shielding element includes a first light-shielding surface and a plurality of convex structures. The first light-shielding surface is disposed between the optical element and the photosensitive element. The convex structures are disposed on the first light-shielding surface and arranged in a two-dimensional array form. The convex structures are integrally formed with the first light-shielding surface, and a cross-section of a bottom of each convex structure is circular. Each convex structure extends and protrudes away from the first light-shielding surface from the bottom, and an arc surface is formed at a top of each convex structure. Among them, on a cross-section coinciding with the optical axis, there is a first included angle between the first light-shielding surface and the optical axis. The first included angle is θa, which satisfies the following condition: 0.86 < sinθa ≤ 1. Specifically, the photosensitive element can also be displaced relative to the optical element. Thereby, functions of optical focusing or optical anti-shake can be achieved. In addition, the two-dimensional array form can be a linear array, a curved array, a circular array, etc., and the convex structures arranged in the two-dimensional array form can form a light trap structure. Thereby, it helps to weaken stray light. When the first included angle satisfies the condition, it is beneficial for stray light to enter the convex structures, and the stray light is weakened between the convex structures, which helps to improve the molding quality of the convex structures. Furthermore, the first included angle is θa, which can satisfy the following condition: 0.96 < sinθa ≤ 1.

[0144] The first included angle between the first light-shielding surface and the optical axis can vary with the distance from the optical axis. Thereby, it helps to improve the influence of stray light with various incident directions. Specifically, the first included angle between the first light-shielding surface and the optical axis is not a fixed value.

[0145] Furthermore, the first light-shielding surface faces the optical element. The first light-shielding surface can include an inclined portion, and the inclined portion gradually moves away from the optical element in a direction away from the optical axis. Thereby, it helps to guide the stray light outside the reflecting element.

[0146] The first included angle is between the inclined portion and the optical axis. The first included angle is θa, which can satisfy the following condition: -0.5 ≤ cosθa < 0.

[0147] The convex structures are arranged in an array form in a direction away from the optical axis. On a cross-section coinciding with the optical axis, taking the top of the convex structure closest to the optical axis as a reference point, in a direction perpendicular to the optical axis, the distance between the reference point and the optical axis is X, and in a direction parallel to the optical axis, the distance between the reference point and the optical element facing the first light-shielding surface is Y2, which can satisfy the following condition: 0.03 < Y2 / X < 0.76. When the setting position of the convex structures satisfies this condition, it helps to make the stray light enter the light trap structure formed by the convex structures arranged in the two-dimensional array form, thereby enhancing the effect of weakening the stray light.

[0148] The convex structures can be further arranged in an array along the direction around the optical axis. Thereby, the convex structures arranged in a two-dimensional array contribute to weakening the stray light incident from different directions, and can enhance the effect of the light trap structure in destroying the stray light.

[0149] The height of each convex structure is H, which can satisfy the following condition: 6 μm < H < 102 μm. Thereby, the light trap structure can have sufficient stray light capturing ability. Specifically, when the first light shielding surface is an inclined surface, the height is calculated based on the central axis of each convex structure.

[0150] The height of each convex structure is H. On the cross-section coinciding with the optical axis, the height difference between any two adjacent convex structures is ΔH, which can satisfy the following condition: 0.05 < ΔH / H < 0.55. Specifically, an appropriate height difference ratio helps to capture the stray light.

[0151] The spacing distance between any two adjacent convex structures can be greater than the height of each convex structure. Thereby, it helps to reflect the stray light between the convex structures, and further weakens the stray light. Specifically, the spacing distance between adjacent convex structures is calculated based on the central axis.

[0152] The light shielding element may further include a second light shielding surface. The second light shielding surface may include a plurality of strip structures, which are arranged in an array along the direction around the optical axis, and the cross-section of each strip structure is triangular. Thereby, it helps to weaken different forms of stray light.

[0153] On the cross-section coinciding with the optical axis, there is a second included angle θb between the second light shielding surface and the optical axis, which can satisfy the following condition: 0.5 < cosθb < 1. Specifically, when the second included angle between the second light shielding surface and the optical axis is small, it is not easy to arrange the convex structures. Therefore, the strip structures can be used to avoid the generation of stray light on the second light shielding surface. Specifically, the combination of the anti-slope portion and the second light shielding surface can form a structure similar to a groove. Furthermore, the light shielding element with an anti-slope portion and the second light shielding surface are designed in combination, making it easier to design a bearing mechanism for the light shielding element to搭接 with other elements.

[0154] Each technical feature in the imaging lens module of the above disclosure can be combined and configured to achieve the corresponding effects.

[0155] The present disclosure provides an electronic device, including the aforementioned imaging lens.

[0156] According to the above embodiments, specific embodiments are proposed below and will be described in detail with reference to the accompanying drawings.

[0157] <First Embodiment>

[0158] Please refer to Figure 1A 、 Figure 1B and Figure 1C , Figure 1A A schematic diagram illustrating the imaging lens 100 in the first embodiment according to the first embodiment of this disclosure is shown. Figure 1B Drawing according to Figure 1A A partially enlarged view of the imaging lens 100 in the first embodiment of the first implementation. Figure 1C Drawing according to Figure 1A A perspective view of the lens element 110b and the light-shielding element 130 in the first embodiment of the first implementation. Figures 1A to 1C As can be seen, the imaging lens 100 has an optical axis X' and includes multiple lens elements 110a, 110, 110b, a reflective element 120, and a light-shielding element 130, with the optical axis X' passing through the lens elements 110a, 110, and 110b. The lens elements 110a, 110, and 110b are respectively disposed along the optical axis X' from the object side to the image side of the imaging lens 100 in the first lens barrel 101 and the second lens barrel 102. The light-shielding element 130 is disposed on the image side of the second lens barrel 102, and the reflective element 120 is disposed on the image side of the lens element 110b and includes at least one reflective surface. Specifically, the reflective element 120 is disposed between the lens elements 110a, 110, and 110b and the imaging surface IMG via the third lens barrel 103. Furthermore, the distance between the lens elements 110a, 110, and 110b is variable. In detail, lens element 110a is a ground glass lens, lens element 110b is a plastic lens, light-shielding element 130 is a fixing ring, and the remaining lens elements 110 can be configured as ground glass lenses or plastic lenses as needed, but are not limited thereto.

[0159] The reflecting surface of the reflecting element 120 can be a first reflecting surface 121, a second reflecting surface 122, and a third reflecting surface 123, all of which are used to deflect the optical axis X'. More specifically, the first reflecting surface 121 is used for the first deflection of the optical axis X', the third reflecting surface 123 is used for the second deflection of the optical axis X', and the second reflecting surface 122 is used for the third deflection of the optical axis X'. The reflecting element 120 may also include an incident surface (not shown) and an exit surface (not shown). The optical axis X' enters the reflecting element 120 through the incident surface and exits the reflecting element 120 through the exit surface. The incident surface and the exit surface are the same surface, and the third reflecting surface 123 is coplanar with both the incident surface and the exit surface.

[0160] The light-shielding element 130 is opaque and is disposed corresponding to the reflective element 120. The light-shielding element 130 includes a first light-shielding surface 131 and a plurality of protruding structures 132. The first light-shielding surface 131 is disposed between the lens element 110b and the reflective element 120.

[0161] Depend on Figure 1BIt can be seen that the protruding structures 132 are arranged in an array in a direction away from the optical axis X'. On the cross section coinciding with the optical axis X', the top of the protruding structure 132 closest to the optical axis X' is taken as a reference point B. Along the direction perpendicular to the optical axis X', the distance between the reference point B and the optical axis X' is X. Along the direction parallel to the optical axis X', the distance between the reference point B and the reflective element 120 facing the first light-shielding surface 131 is Y. In the first embodiment of the first implementation, X = 1.51 mm, Y = 0.26 mm, and Y / X = 0.17.

[0162] The height of each protrusion 132 is H. On a cross-section along the coincident optical axis X', the height difference between any two adjacent protrusions 132 is ΔH. In the first embodiment of the first implementation, H = 30 μm, ΔH = 3.5 μm, and ΔH / H = 0.12. Furthermore, the spacing between any two adjacent protrusions 132 can be greater than the height H of each protrusion 132. Specifically, the spacing between adjacent protrusions 132 is calculated with respect to the central axis.

[0163] Please refer to Figure 1D , Figure 1E and Figure 1F , Figure 1D Drawing according to Figure 1A A partially enlarged view of the light-shielding element 130 in the first embodiment of the first implementation. Figure 1E Drawing according to Figure 1D A schematic diagram of the light-shielding element 130 in the first embodiment of the first implementation. Figure 1F Drawing according to Figure 1E A cross-sectional view of the light-shielding element 130 along section line 1F-1F in the first embodiment of the first implementation. Figure 1B , Figures 1D to 1E It is understood that the protruding structures 132 are disposed on the first light-shielding surface 131 and arranged in a two-dimensional array. The protruding structures 132 are integrally formed with the first light-shielding surface 131, and a cross-section of the bottom of each protruding structure 132 is circular. Each protruding structure 132 extends from the bottom in a direction away from the first light-shielding surface 131 and forms an arc surface at the top of each protruding structure 132. Furthermore, the protruding structures 132 can be arranged in an array along the direction surrounding the optical axis X'. Specifically, the two-dimensional array can be a linear array, a curved array, a circular array, etc., and the protruding structures 132 arranged in a two-dimensional array can form a light trap structure, but are not limited thereto.

[0164] Depend on Figure 1B and Figure 1FIt can be seen that on a cross section of the coincident optical axis X', the first light-shielding surface 131 has a first included angle with the optical axis X', the first included angle being θa1, θa2, and θa3. In the first embodiment of the first implementation, θa1 = 85°, θa2 = 110°, θa3 = 110°, and sinθa1 = 0.996, sinθa2 = 0.94, sinθa3 = 0.94, cosθa2 = -0.342, and cosθa3 = -0.342. Furthermore, the first included angles θa1, θa2, and θa3 between the first light-shielding surface 131 and the optical axis X' can vary with different distances from the optical axis X'.

[0165] Furthermore, the first light-shielding surface 131 faces the reflective element 120, and the first light-shielding surface 131 may include two anti-oblique portions 133 and 134, and the anti-oblique portions 133 and 134 gradually move away from the reflective element 120 in a direction away from the optical axis X'.

[0166] The light-shielding element 130 may further include two second light-shielding surfaces 135 and 136. The second light-shielding surfaces 135 and 136 may include a plurality of strip structures 137. The strip structures 137 are arranged in an array along the direction surrounding the optical axis X', and the cross-section of each strip structure 137 is triangular. Furthermore, on the cross-section of the coincident optical axis X', the second light-shielding surfaces 135 and 136 have a second included angle with the optical axis X'. The second included angle is θb1 and θb2. In the first embodiment of the first implementation, θb1 = 3.6°, θb2 = 30°, and cosθb1 = 0.998 and cosθb2 = 0.866.

[0167] Please refer to Figure 1G and Figure 1H , Figure 1G A partially enlarged view of the light-shielding element 140 in the second embodiment according to the first embodiment of this disclosure is shown. Figure 1H Drawing according to Figure 1G A cross-sectional view of the light-shielding element 140 in the second embodiment of the first embodiment. The structure, position, and connection relationship between the second embodiment of the first embodiment and the first embodiment of the first embodiment are the same or similar. The difference is that the light-shielding element 140 in the second embodiment of the first embodiment includes a first light-shielding surface 141 and a plurality of protruding structures 142, wherein the first light-shielding surface 141 may include two anti-oblique portions 143 and 144. Furthermore, the light-shielding element 140 may also include a second light-shielding surface 145, which may include a plurality of strip structures 147. The strip structures 147 are arranged in an array along the direction surrounding the optical axis X', and the cross-section of each strip structure 147 is triangular. In detail, the protruding structures 142 of the light-shielding element 140 may be further disposed on the first light-shielding surface 141 on the anti-oblique portion 143 and the first light-shielding surface 141 between the second light-shielding surface 145 and the anti-oblique portion 143.

[0168] The second embodiment of the first implementation is identical to the first embodiment of the first implementation in terms of the structure and configuration of the remaining components, and will not be described again here.

[0169] Please refer to Figure 1I and Figure 1J , Figure 1I A partially enlarged view of the imaging lens 100 in the third embodiment of the first embodiment according to this disclosure is shown. Figure 1J Drawing according to Figure 1I A schematic diagram of the photosensitive element 150 and the light-blocking element 160 in the third embodiment of the first embodiment. Figure 1I and Figure 1J It is understood that the structure, position, and connection relationship of the third embodiment of the first embodiment are the same or similar to those of the first embodiment of the first embodiment. The difference lies in that a photosensitive element 150 of the imaging lens 100 of the third embodiment of the first embodiment is disposed in a light-shielding element 160 and corresponds to a reflective element 120, and the light-shielding element 160 corresponds to the reflective element 120. In detail, the reflective element 120 is light-transmitting, and the photosensitive element 150 is used to sense light. The light-shielding element 160 includes a first light-shielding surface 161 and a plurality of protruding structures 162. The first light-shielding surface 161 is disposed between the reflective element 120 and the photosensitive element 150. The protruding structures 162 are disposed on the first light-shielding surface 161 and arranged in a two-dimensional array. The protruding structures 162 are integrally formed with the first light-shielding surface 161, and a cross-section of the bottom of each protruding structure 162 is circular. Each protruding structure 162 extends from the bottom in a direction away from the first light-shielding surface 161 and forms an arc surface at the top of each protruding structure 162. Furthermore, the protruding structures 162 can be arranged in an array along the direction surrounding the optical axis X'. Specifically, the light-shielding element 160 is a photosensitive element base, but is not limited thereto.

[0170] Depend on Figure 1I It can be seen that on a cross section of the coincident optical axis X', the first light-shielding surface 161 and the optical axis X' have a first included angle, θa. In the third embodiment of the first implementation, θa = 90° and sinθa = 1. Furthermore, the first included angle θa between the first light-shielding surface 161 and the optical axis X' can vary with the distance between them and the optical axis X'.

[0171] The protruding structures 162 are arranged in an array facing away from the optical axis X'. On a cross-section coinciding with the optical axis X', the top of the protruding structure 162 closest to the optical axis X' is used as a reference point B. Along the direction perpendicular to the optical axis X', the distance between reference point B and the optical axis X' is X2. Along the direction parallel to the optical axis X', the distance between reference point B and the reflective element 120 facing the first light-shielding surface 161 is Y2. In the third embodiment of the first implementation, X2 = 2.3 mm, Y2 = 1.32 mm, and Y2 / X2 = 0.57. Furthermore, the height of each protruding structure 162 is H2. In the third embodiment of the first implementation, H2 = 85 μm. Moreover, the spacing between any two adjacent protruding structures 162 can be greater than the height H2 of the protruding structure 162. Specifically, the spacing between adjacent protruding structures 162 is calculated with respect to the central axis.

[0172] The structure and configuration of the remaining components in the third embodiment of the first embodiment are the same as those in the first embodiment of the first embodiment, and will not be described again here.

[0173] <Second Implementation Method>

[0174] Please refer to Figure 2A , Figure 2B and Figure 2C , Figure 2A A schematic diagram illustrating the imaging lens 200 in the first embodiment of the second embodiment according to this disclosure is shown. Figure 2B Drawing according to Figure 2A A partially enlarged view of the imaging lens 200 in the first embodiment of the second implementation. Figure 2C Drawing according to Figure 2A A partial perspective view of the imaging lens 200 in the first embodiment of the second implementation. Figures 2A to 2CAs can be seen, the imaging lens 200 has an optical axis X' and includes multiple lens elements 210a, 210b, 210c, 210d, 210e, 210f, a reflective element 220, and a light-blocking element 230, with the optical axis X' passing through the lens elements 210a, 210b, 210c, 210d, 210e, and 210f. The lens elements 210a, 210b, 210c, 210d, 210e, and 210f are respectively disposed on the first lens barrel 201 and the second lens barrel 202 along the optical axis X' from the object side to the image side of the imaging lens 200. The reflective element 220 is disposed on the object side of the lens element 210a and includes a first reflective surface 221. The first reflective surface 221 is used to deflect the optical axis X'. The reflecting element 220 may further include an incident surface 2201 and an exit surface 2202. The optical axis X' enters the reflecting element 220 through the incident surface 2201 and exits the reflecting element 220 through the exit surface 2202. Furthermore, the imaging surface IMG is located on the image side of the lens element 210f. Specifically, the lens element 210a is a molded glass lens, while the other lens elements 110b, 210c, 210d, 110e, and 210f can be configured as ground glass lenses or plastic lenses as needed. The light-shielding element 230 is a reflective element support, but is not limited thereto. Furthermore, the distances between the lens elements 210a, 210b, 210c, 210d, 210e, and 210f are variable.

[0175] The light-shielding element 230 is opaque and is disposed corresponding to the lens element 210a. The light-shielding element 230 includes a first light-shielding surface 231 and a plurality of protruding structures 232. The first light-shielding surface 231 is disposed between the lens element 210a and the reflective element 220.

[0176] Depend on Figure 2B and Figure 2C It can be seen that the protruding structure 232 is disposed on the first light-shielding surface 231 and arranged in a two-dimensional array. The protruding structure 232 is integrally formed with the first light-shielding surface 231, and each protruding structure 232 extends from a bottom toward a direction away from the first light-shielding surface 231.

[0177] On a cross section of the coincident optical axis X', the first light-shielding surface 231 and the optical axis X' have a first included angle, θa, wherein, in the first embodiment of the second implementation, θa = 90° and sinθa = 1. Furthermore, the first included angle θa between the first light-shielding surface 231 and the optical axis X' can vary with different distances from the optical axis X'.

[0178] The protruding structures 232 are arranged in an array facing away from the optical axis X'. On a cross-section coinciding with the optical axis X', the top of the protruding structure 232 closest to the optical axis X' is used as a reference point B. Along the direction perpendicular to the optical axis X', the distance between reference point B and the optical axis X' is X. Along the direction parallel to the optical axis X', the distance between reference point B and the lens element 210a facing the first light-shielding surface 231 is Y. In the first embodiment of the second implementation, X = 2.44 mm, Y = 1.56 mm, and Y / X = 0.64. Furthermore, the height of each protruding structure 232 is H. In the first embodiment of the second implementation, H = 40 μm. Moreover, the spacing between any two adjacent protruding structures 232 can be greater than the height H of each protruding structure 232. Specifically, the spacing between adjacent protruding structures 232 is calculated with respect to the central axis.

[0179] Please refer to Figure 2D and Figure 2E , Figure 2D A schematic diagram illustrating the imaging lens 200 in a second embodiment according to the second embodiment of this disclosure is shown. Figure 2E Drawing according to Figure 2D A perspective view of the lens element 210d and the light-shielding element 240 in the second embodiment of the second implementation. Figure 2D and Figure 2E It is understood that the second embodiment of the second implementation has the same or similar structure, position, and connection relationship as the first embodiment of the second implementation. The difference is that the lens elements 210d, 210e, and 210f of the imaging lens 200 in the second embodiment of the second implementation are disposed in the light-shielding element 240. Specifically, the light-shielding element 240 may be a lens barrel, but is not limited thereto.

[0180] The light-shielding element 240 is opaque and includes a first light-shielding surface 241 and a plurality of protruding structures 242. The first light-shielding surface 241 is disposed between the lens element 210c and the lens element 210d.

[0181] The protruding structures 242 are disposed on the first light-shielding surface 241 and arranged in a two-dimensional array. The protruding structures 242 are integrally formed with the first light-shielding surface 241, and a cross-section of the bottom of each protruding structure 242 is circular. Each protruding structure 242 extends from the bottom in a direction away from the first light-shielding surface 241 and forms an arc surface at the top of each protruding structure 242. The protruding structures 242 can be further arranged in an array along the direction surrounding the optical axis X'. Specifically, the protruding structures 242 arranged in a two-dimensional array can form a light trap structure, but are not limited thereto.

[0182] The protruding structures 242 are arranged in an array facing away from the optical axis X'. On the cross-section coinciding with the optical axis X', the top of the protruding structure 242 closest to the optical axis X' is used as a reference point B. Along the direction perpendicular to the optical axis X', the distance between reference point B and the optical axis X' is X. Along the direction parallel to the optical axis X', the distance between reference point B and the lens element 210c facing the first light-shielding surface 241 is Y. In the second embodiment of the second implementation, X = 2.51 mm, Y = 1.29 mm, and Y / X = 0.51. The height of each protruding structure 242 is H. On the cross-section coinciding with the optical axis X', the height difference between any two adjacent protruding structures 242 is ΔH. In the second embodiment of the second implementation, H = 40 μm, ΔH = 10 μm, and ΔH / H = 0.25. The spacing between any two adjacent protruding structures 242 can be greater than the height H of each protruding structure 242. Specifically, the spacing between adjacent protrusions 242 is calculated with respect to the central axis.

[0183] On a cross section of the coincident optical axis X', the first light-shielding surface 241 and the optical axis X' have a first included angle, θa. In the second embodiment of the second implementation, θa = 90° and sinθa = 1. The first included angle θa between the first light-shielding surface 241 and the optical axis X' can vary with different distances from the optical axis X'.

[0184] The second embodiment of the second implementation is identical to the first embodiment of the second implementation in terms of the structure and configuration of the remaining components, and will not be described again here.

[0185] <Third Implementation Method>

[0186] Please refer to Figure 3A and Figure 3B , Figure 3A A schematic diagram illustrating the imaging lens 300 in the first embodiment according to the third embodiment of this disclosure is shown. Figure 3B Drawing according to Figure 3A A partially enlarged view of the light-shielding element 330 in the first embodiment of the third implementation. Figure 3A and Figure 3B As can be seen, the imaging lens 300 has an optical axis X' and includes multiple lens elements 310a, 310b and a light-shielding element 330, and the optical axis X' passes through the lens elements 310a, 310b. The lens elements 310a, 310b are disposed on the light-shielding element 330 along the optical axis X' from the object side to the image side of the imaging lens 300.

[0187] The light-shielding element 330 is opaque and includes a first light-shielding surface 331 and a plurality of protruding structures 332. The first light-shielding surface 331 faces an image-side direction and is disposed adjacent to the lens element 310a. The protruding structures 332 are disposed on the first light-shielding surface 331 and arranged in a two-dimensional array. The protruding structures 332 are integrally formed with the first light-shielding surface 331, and a cross-section of the bottom of each protruding structure 332 is circular. Each protruding structure 332 extends from the bottom in a direction away from the first light-shielding surface 331 and forms an arc surface at the top of each protruding structure 332. Furthermore, the protruding structures 332 can be further arranged in an array along the direction surrounding the optical axis X'.

[0188] On a cross section of the coincident optical axis X', the first light-shielding surface 331 and the optical axis X' have a first included angle, θa. In the first embodiment of the third implementation, θa = 65° and sinθa = 0.906. The first included angle θa between the first light-shielding surface 331 and the optical axis X' can vary with different distances from the optical axis X'.

[0189] The protruding structures 332 are arranged in an array facing away from the optical axis X'. On the cross-section coinciding with the optical axis X', the top of the protruding structure 332 closest to the optical axis X' is used as a reference point B. Along the direction perpendicular to the optical axis X', the distance between reference point B and the optical axis X' is X. Along the direction parallel to the optical axis X', the distance between reference point B and the lens element 310a facing the first light-shielding surface 331 is Y. In the first embodiment of the third implementation, X = 2.58 mm, Y = 0.15 mm, and Y / X = 0.06. The height of each protruding structure 332 is H. On the cross-section coinciding with the optical axis X', the height difference between any two adjacent protruding structures 332 is ΔH. In the first embodiment of the third implementation, H = 40 μm, ΔH = 20 μm, and ΔH / H = 0.5. The spacing between any two adjacent protruding structures 332 can be greater than the height H of each protruding structure 332.

[0190] <Fourth Implementation Method>

[0191] Please refer to Figure 4A and Figure 4B , Figure 4A A schematic diagram of the electronic device 10 according to the fourth embodiment of this disclosure is shown. Figure 4B Drawing according to Figure 4A Another schematic diagram of the electronic device 10 in the fourth embodiment. Figure 4A and Figure 4BAs can be seen, the electronic device 10 is a smartphone, which includes an imaging lens and a user interface 11. More specifically, the imaging lens is an ultra-wide-angle imaging lens 12, a high-resolution imaging lens 13, and a telephoto imaging lens 14, and the user interface 11 is a touch screen, but this is not a limitation. Specifically, each imaging lens can be an imaging lens provided by any of the aforementioned first to third embodiments, but this disclosure is not limited thereto.

[0192] The user enters the shooting mode through the user interface 11, which displays the screen and allows manual adjustment of the shooting angle to switch between different imaging lenses. At this time, the imaging lens gathers the imaging light onto the electronic image sensor and outputs electronic signals related to the image to the image signal processor (ISP) 15.

[0193] Depend on Figure 4B As can be seen, depending on the camera specifications of the electronic device 10, the electronic device 10 may also include an optical image stabilization component (not shown). Furthermore, the electronic device 10 may also include at least one focus assist module (not shown) and at least one sensing element (not shown). The focus assist module may be a color temperature compensation flash module (not shown), an infrared rangefinder, a laser focus module, etc. The sensing element may have the function of sensing physical momentum and kinetic energy, such as an accelerometer, gyroscope, or Hall effect element, to sense the shaking and tremors caused by the user's hand or the external environment. This facilitates the performance of the autofocus function and optical image stabilization component in the imaging lens of the electronic device 10, resulting in good image quality. This helps the electronic device 10 according to this disclosure to have multiple shooting modes, such as optimized Selfie, low-light HDR (High Dynamic Range) imaging, and high-resolution 4K video recording. In addition, users can directly view the camera's shooting screen through the user interface 11 and manually operate the framing range on the user interface 11 to achieve the WYSIWYG autofocus function.

[0194] Furthermore, the imaging lens, optical image stabilization component, sensing element, and focus assist module can be mounted on a flexible printed circuit board (FPC) (not shown), and electrically connected to the imaging signal processing element 15 and other related components via a connector (not shown) to execute the shooting process. Current electronic devices, such as smartphones, tend to be thinner and lighter. By mounting the imaging lens and related components on a flexible printed circuit board and then using a connector to integrate the circuitry onto the mainboard of the electronic device, the design and circuit layout requirements within the limited space of the electronic device can be met, providing greater flexibility. This also allows for more flexible control of the imaging lens's autofocus function through the device's touchscreen. In the fourth embodiment, the electronic device 10 may include multiple sensing elements and multiple focus assist modules. The sensing elements and focus assist modules are mounted on the flexible printed circuit board and at least one other flexible printed circuit board (not shown), and electrically connected to the imaging signal processing element 15 and other related components via corresponding connectors to execute the shooting process. In other embodiments (not shown), the sensing element and auxiliary optical element may also be mounted on the motherboard of the electronic device or other types of carrier boards, depending on the mechanical design and circuit layout requirements.

[0195] Furthermore, the electronic device 10 may further include, but is not limited to, a display unit, a control unit, a storage unit, random access memory (RAM), read-only memory (ROM), or a combination thereof.

[0196] Figure 4C Drawing according to Figure 4A A schematic diagram of an image captured by the electronic device 10 in the fourth embodiment. Figure 4C It can be seen that the ultra-wide-angle imaging lens 12 can capture images of a larger range and has the function of accommodating more scenery.

[0197] Figure 4D Drawing according to Figure 4A A schematic diagram of another image captured by the electronic device 10 in the fourth embodiment. Figure 4D It can be seen that the high-pixel imaging lens 13 can capture images within a certain range and also has high pixel count, with high resolution and low distortion.

[0198] Figure 4E Drawing according to Figure 4A A schematic diagram of another image captured by the electronic device 10 in the fourth embodiment. Figure 4E It is known that the telephoto imaging lens 14 has a high magnification function, which can capture images at a distance and magnify them to a high degree.

[0199] Depend on Figures 4C to 4EIt is understood that by using imaging lenses with different focal lengths for framing and combining them with image processing technology, the electronic device 10 can achieve the function of zooming.

[0200] <Fifth Implementation Method>

[0201] Figure 5 A schematic diagram of the electronic device 20 according to the fifth embodiment of this disclosure is shown. Figure 5 As can be seen, the electronic device 20 is a smartphone, and the electronic device 20 includes an imaging lens. More specifically, the imaging lens is an ultra-wide-angle imaging lens 21, a wide-angle imaging lens 22, telephoto imaging lenses 23 and 24, and a TOF module (Time-Of-Flight) 26. The TOF module 26 can also be other types of imaging lenses, and is not limited to this configuration. Specifically, each imaging lens can be an imaging lens provided by any of the aforementioned first to third embodiments, but this disclosure is not limited thereto.

[0202] Furthermore, the telephoto imaging lens 24 is used to deflect the optical path, but the content of this disclosure is not limited thereto.

[0203] Depending on the camera specifications of the electronic device 20, the electronic device 20 may also include an optical image stabilization component (not shown). Furthermore, the electronic device 20 may also include at least one focus assist module (not shown) and at least one sensing element (not shown). The focus assist module may be a color temperature compensated flash module 25, an infrared rangefinder, a laser focus module, etc. The sensing element may have the function of sensing physical momentum and kinetic energy, such as an accelerometer, gyroscope, or Hall effect element, to sense the shaking and tremors caused by the user's hand or the external environment. This is beneficial to the autofocus function and optical image stabilization component configured in the imaging lens of the electronic device 20, so as to obtain good image quality and help the electronic device 20 according to the present disclosure to have multiple shooting modes, such as optimized Selfie, low light HDR (High Dynamic Range) imaging, and high resolution 4K video recording.

[0204] Furthermore, the structure and arrangement of the remaining components in the fifth embodiment are the same as those in the fourth embodiment, and will not be described again here.

[0205] <Sixth Implementation Method>

[0206] Please refer to Figures 6A to 6C , Figure 6A A schematic diagram of the vehicle tool 30 according to the sixth embodiment of this disclosure is shown. Figure 6B Drawing according to Figure 6AAnother schematic diagram of the vehicle tool 30 in the sixth embodiment. Figure 6C Drawing according to Figure 6A Another schematic diagram of the vehicle tool 30 in the sixth embodiment. Figures 6A to 6C As can be seen, the electronic device (not shown in the figure) is applied to the vehicle tool 30, and the electronic device includes an imaging lens 31. In the sixth embodiment, the number of imaging lenses 31 is six, and the imaging lenses 31 are vehicle imaging lenses. Specifically, each imaging lens can be an imaging lens provided by any of the aforementioned first to third embodiments, but this disclosure is not limited thereto.

[0207] From 6A diagram to Figure 6C It is known that the two imaging lenses 31 are located below the left and right rearview mirrors respectively, and are used to capture image information at a viewing angle θ. Specifically, the viewing angle θ can satisfy the following condition: 40 degrees < θ < 90 degrees. In this way, image information within the range of the left and right side lanes can be captured.

[0208] From 6A diagram to Figure 6C It is understood that the other two imaging lenses 31 can be installed inside the vehicle tool 30 to help the driver obtain information about the external space outside the cockpit, such as external space information I1, I2, I3, and I4, but are not limited thereto. Specifically, the two imaging lenses 31 are respectively installed near the rearview mirror and near the rear window. Furthermore, the imaging lenses 31 can also be installed on the non-mirror surfaces of the left and right rearview mirrors of the vehicle tool 30, but are not limited thereto.

[0209] The imaging lenses 31 can be positioned at the front and rear of the vehicle tool 30, specifically below the left and right rearview mirrors. This provides a wider field of view, reducing blind spots and improving driving safety. Furthermore, positioning the imaging lenses 31 around the vehicle tool 30 helps identify road conditions outside the vehicle tool 30, facilitating the implementation of autonomous driving assistance functions.

[0210] Although the present invention has been disclosed above with reference to embodiments and examples, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An imaging lens having an optical axis, characterized in that, Include: A lens element through which the optical axis passes; A reflecting element, disposed on an object side or an image side of the lens element, and comprising: A first reflecting surface, the first reflecting surface being used to deflect the optical axis; and A light-shielding element, the light-shielding element being opaque, the light-shielding element being disposed opposite to the lens element or the reflective element, and the light-shielding element comprising: A first light-shielding surface is disposed between the lens element and the reflective element; and Multiple protruding structures are disposed on the first light-shielding surface and arranged in a two-dimensional array. The multiple protruding structures are integrally formed with the first light-shielding surface, and a cross-section of a bottom of each protruding structure is circular. Each protruding structure extends from the bottom in a direction away from the first light-shielding surface and forms an arc surface at a top of each protruding structure. In a cross-section coinciding with the optical axis, the first light-blocking surface and the optical axis have a first included angle, θa, which satisfies the following condition: 0.86 <sinθa≤1。 2. The imaging lens as described in claim 1, characterized in that, The first included angle is θa, which satisfies the following condition: 0.96 <sinθa≤1。 3. The imaging lens as described in claim 1, characterized in that, The first angle between the first light-shielding surface and the optical axis varies with the distance between them and the optical axis.

4. The imaging lens as described in claim 3, characterized in that, The first light-shielding surface faces the reflective element, and the first light-shielding surface includes an anti-oblique portion, which gradually moves away from the reflective element in a direction away from the optical axis.

5. The imaging lens as described in claim 4, characterized in that, The first included angle is located between the anti-oblique portion and the optical axis, and the first included angle is θa, which satisfies the following condition: -0.5≤cosθa<0.

6. The imaging lens as described in claim 1, characterized in that, The plurality of protruding structures are arranged in an array toward a direction away from the optical axis; In the cross-section coinciding with the optical axis, the top of the protruding structure closest to the optical axis is used as a reference point. The distance between this reference point and the optical axis is X along the direction perpendicular to the optical axis, and the distance between this reference point and the reflective element or lens element facing the first light-shielding surface is Y along the direction parallel to the optical axis. This satisfies the following condition: 0.03 <Y / X<0.76。 7. The imaging lens as described in claim 6, characterized in that, The plurality of protruding structures are further arranged in an array along the direction surrounding the optical axis.

8. The imaging lens as described in claim 1, characterized in that, The height of each of these protruding structures is H, and it satisfies the following condition: 6μm <H<102μm。 9. The imaging lens as described in claim 8, characterized in that, The height of each of the protruding structures is H. On the cross-section coinciding with the optical axis, the height difference between any two adjacent protruding structures is ΔH, which satisfies the following condition: 0.05 < ΔH / H < 0.

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10. The imaging lens as described in claim 9, characterized in that, On the cross-section coinciding with the optical axis, the height difference between any two adjacent protrusions among the plurality of protrusions is ΔH, which satisfies the following condition: 1.5μm < ΔH < 29μm.

11. The imaging lens as described in claim 8, characterized in that, The distance between any two adjacent protrusions in the plurality of protrusions is greater than the height of each protrusion.

12. The imaging lens as described in claim 1, characterized in that, The light-shielding element also includes: A second light-shielding surface comprising a plurality of strip structures arranged in an array along a direction surrounding the optical axis, wherein the cross-section of each strip structure is triangular.

13. The imaging lens as described in claim 12, characterized in that, On the cross-section coinciding with the optical axis, the second light-shielding surface and the optical axis have a second included angle, θb, which satisfies the following condition: 0.5 <cosθb<1。 14. The imaging lens as described in claim 1, characterized in that, The reflective element also includes: A second reflecting surface is used to further deflect the optical axis.

15. The imaging lens as described in claim 14, characterized in that, The reflective element also includes: An incident surface, through which the optical axis enters the reflective element; and One exit surface from which the optical axis exits the reflective element; The incident surface and the exit surface are the same surface.

16. The imaging lens as described in claim 1, characterized in that, The number of lens elements is at least two, and the distance between the at least two lens elements is variable.

17. An imaging lens having an optical axis, characterized in that, Include: A lens element through which the optical axis passes; A reflecting element, disposed on an object side or an image side of the lens element, and comprising: A first reflecting surface, the first reflecting surface being used to deflect the optical axis; and A light-shielding element, the light-shielding element being opaque, the light-shielding element being disposed opposite to the lens element or the reflective element, and the light-shielding element comprising: A first light-shielding surface is disposed between the lens element and the reflective element; and Multiple protruding structures are disposed on the first light-shielding surface and arranged in a two-dimensional array. The multiple protruding structures are integrally formed with the first light-shielding surface, and each of the protruding structures extends from a bottom in a direction away from the first light-shielding surface. In a cross-section coinciding with the optical axis, the first light-blocking surface and the optical axis have a first included angle, θa, which satisfies the following condition: 0.86 <sinθa≤1。 18. The imaging lens as described in claim 17, characterized in that, The first included angle is θa, which satisfies the following condition: 0.96 <sinθa≤1。 19. The imaging lens as described in claim 17, characterized in that, The first angle between the first light-shielding surface and the optical axis varies with the distance between them and the optical axis.

20. The imaging lens as described in claim 19, characterized in that, The first light-shielding surface faces the reflective element, and the first light-shielding surface includes an anti-oblique portion, which gradually moves away from the reflective element in a direction away from the optical axis.

21. The imaging lens as described in claim 20, characterized in that, The first included angle is located between the anti-oblique portion and the optical axis, and the first included angle is θa, which satisfies the following condition: -0.5≤cosθa<0.

22. The imaging lens as described in claim 17, characterized in that, The plurality of protruding structures are arranged in an array toward a direction away from the optical axis; In the cross-section coinciding with the optical axis, the top of the protruding structure closest to the optical axis is used as a reference point. The distance between this reference point and the optical axis is X along the direction perpendicular to the optical axis, and the distance between this reference point and the reflective element or lens element facing the first light-shielding surface is Y along the direction parallel to the optical axis. This satisfies the following condition: 0.03 <Y / X<0.76。 23. The imaging lens as described in claim 22, characterized in that, The plurality of protruding structures are further arranged in an array along the direction surrounding the optical axis.

24. The imaging lens as described in claim 17, characterized in that, The height of each of these protruding structures is H, and it satisfies the following condition: 6μm <H<102μm。 25. The imaging lens as described in claim 24, characterized in that, The height of each of the protruding structures is H. On the cross-section coinciding with the optical axis, the height difference between any two adjacent protruding structures is ΔH, which satisfies the following condition: 0.05 < ΔH / H < 0.

55.

26. The imaging lens as described in claim 25, characterized in that, On the cross-section coinciding with the optical axis, the height difference between any two adjacent protrusions among the plurality of protrusions is ΔH, which satisfies the following condition: 1.5μm < ΔH < 29μm.

27. The imaging lens as described in claim 24, characterized in that, The distance between any two adjacent protrusions in the plurality of protrusions can be greater than the height of each protrusion.

28. The imaging lens as described in claim 17, characterized in that, The light-shielding element also includes: A second light-shielding surface comprising a plurality of strip structures arranged in an array along a direction surrounding the optical axis, wherein the cross-section of each strip structure is triangular.

29. The imaging lens as described in claim 28, characterized in that, On the cross-section coinciding with the optical axis, the second light-shielding surface and the optical axis have a second included angle, θb, which satisfies the following condition: 0.5 <cosθb<1。 30. The imaging lens as described in claim 17, characterized in that, The reflective element also includes: A second reflecting surface is used to further deflect the optical axis.

31. The imaging lens as described in claim 30, characterized in that, The reflective element also includes: An incident surface, through which the optical axis enters the reflective element; and One exit surface from which the optical axis exits the reflective element; The incident surface and the exit surface are the same surface.

32. An imaging lens, characterized in that, It has an optical axis and includes: An optical element that is light-transmitting, and the optical axis passes through the optical element; A photosensitive element for sensing light, and the photosensitive element is correspondingly disposed with respect to the optical element; and A light-shielding element, the light-shielding element being opaque, the light-shielding element being disposed corresponding to the optical element or the photosensitive element, and the light-shielding element comprising: A first light-shielding surface is disposed between the optical element and the photosensitive element; and Multiple protruding structures are disposed on the first light-shielding surface and arranged in a two-dimensional array. The multiple protruding structures are integrally formed with the first light-shielding surface, and a cross-section of a bottom of each protruding structure is circular. Each protruding structure extends from the bottom in a direction away from the first light-shielding surface and forms an arc surface at a top of each protruding structure. In a cross-section coinciding with the optical axis, the first light-blocking surface and the optical axis have a first included angle, θa, which satisfies the following condition: 0.86 <sinθa≤1。 33. The imaging lens as described in claim 32, characterized in that, The first included angle is θa, which satisfies the following condition: 0.96 <sinθa≤1。 34. The imaging lens as described in claim 32, characterized in that, The first angle between the first light-shielding surface and the optical axis varies with the distance between them and the optical axis.

35. The imaging lens as described in claim 34, characterized in that, The first light-shielding surface faces the optical element, and the first light-shielding surface includes an anti-oblique portion, which gradually moves away from the optical element in a direction away from the optical axis.

36. The imaging lens as described in claim 35, characterized in that, The first included angle is located between the anti-oblique portion and the optical axis, and the first included angle is θa, which satisfies the following condition: -0.5≤cosθa<0.

37. The imaging lens as described in claim 32, characterized in that, The plurality of protruding structures are arranged in an array toward a direction away from the optical axis; In the cross-section coinciding with the optical axis, the top of the protruding structure closest to the optical axis is used as a reference point. Along the direction perpendicular to the optical axis, the distance between the reference point and the optical axis is X. Along the direction parallel to the optical axis, the distance between the reference point and the optical element facing the first light-shielding surface is Y2. This satisfies the following conditions: 0.03 <Y2 / X<0.76。 38. The imaging lens as described in claim 37, characterized in that, The plurality of protruding structures are further arranged in an array along the direction surrounding the optical axis.

39. The imaging lens as described in claim 32, characterized in that, The height of each of these protruding structures is H, and it satisfies the following condition: 6μm <H<102μm。 40. The imaging lens as described in claim 39, characterized in that, The height of each of the protruding structures is H. On the cross-section coinciding with the optical axis, the height difference between any two adjacent protruding structures is ΔH, which satisfies the following condition: 0.05 < ΔH / H < 0.

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41. The imaging lens as described in claim 39, characterized in that, The distance between any two adjacent protrusions in the plurality of protrusions is greater than the height of each protrusion.

42. The imaging lens as described in claim 32, characterized in that, The light-shielding element also includes: A second light-shielding surface comprising a plurality of strip structures arranged in an array along a direction surrounding the optical axis, wherein the cross-section of each strip structure is triangular.

43. The imaging lens as described in claim 42, characterized in that, On the cross-section coinciding with the optical axis, the second light-shielding surface and the optical axis have a second included angle, θb, which satisfies the following condition: 0.5 <cosθb<1。 44. An imaging lens having an optical axis, characterized in that, Include: A lens element through which the optical axis passes; and A light-shielding element, which is opaque, is disposed opposite to the lens element, and the light-shielding element comprises: A first light-shielding surface, the first light-shielding surface facing an image side direction, and the first light-shielding surface being disposed adjacent to the lens element; and Multiple protruding structures are disposed on the first light-shielding surface and arranged in a two-dimensional array. The multiple protruding structures are integrally formed with the first light-shielding surface, and a cross-section of a bottom of each protruding structure is circular. Each protruding structure extends from the bottom in a direction away from the first light-shielding surface and forms an arc surface at a top of each protruding structure. In a cross-section coinciding with the optical axis, the first light-blocking surface and the optical axis have a first included angle, θa, which satisfies the following condition: 0.86 <sinθa≤1。 45. The imaging lens as described in claim 44, characterized in that, The first included angle is θa, which satisfies the following condition: 0.96 <sinθa≤1。 46. ​​The imaging lens as described in claim 44, characterized in that, The first angle between the first light-shielding surface and the optical axis varies with the distance between them and the optical axis.

47. The imaging lens as described in claim 46, characterized in that, The first light-shielding surface faces the lens element, and the first light-shielding surface includes a reverse oblique portion, which gradually moves away from the lens element in a direction away from the optical axis.

48. The imaging lens as described in claim 47, characterized in that, The first included angle is located between the anti-oblique portion and the optical axis, and the first included angle is θa, which satisfies the following condition: -0.5≤cosθa<0.

49. The imaging lens as described in claim 44, characterized in that, The plurality of protruding structures are arranged in an array toward a direction away from the optical axis; In the cross-section coinciding with the optical axis, the top of the protruding structure closest to the optical axis is used as a reference point. The distance between this reference point and the optical axis is X along the direction perpendicular to the optical axis, and the distance between this reference point and the lens element facing the first light-shielding surface is Y along the direction parallel to the optical axis. This satisfies the following conditions: 0.03 <Y / X<0.76。 50. The imaging lens as described in claim 49, characterized in that, The plurality of protruding structures are further arranged in an array along the direction surrounding the optical axis.

51. The imaging lens as described in claim 44, characterized in that, The height of each of these protruding structures is H, and it satisfies the following condition: 6μm <H<102μm。 52. The imaging lens as described in claim 51, characterized in that, The height of each of the protruding structures is H. On the cross-section coinciding with the optical axis, the height difference between any two adjacent protruding structures is ΔH, which satisfies the following condition: 0.05 < ΔH / H < 0.

55.

53. The imaging lens as described in claim 52, characterized in that, On the cross-section coinciding with the optical axis, the height difference between any two adjacent protrusions among the plurality of protrusions is ΔH, which satisfies the following condition: 1.5μm < ΔH < 29μm.

54. The imaging lens as described in claim 51, characterized in that, The distance between any two adjacent protrusions in the plurality of protrusions is greater than the height of each protrusion.

55. The imaging lens as described in claim 44, characterized in that, The light-shielding element may also include: A second light-shielding surface may include multiple strip structures, which are arranged in an array along the direction surrounding the optical axis, and the cross-section of each strip structure is triangular.

56. The imaging lens as described in claim 55, characterized in that, On the cross-section coinciding with the optical axis, the second light-shielding surface and the optical axis have a second included angle, θb, which satisfies the following condition: 0.5 <cosθb<1。 57. An electronic device, characterized in that, Include: The imaging lens as described in claim 1, 17, 32 or 44.

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