Imaging lens assembly and electronic device

Abstract

An imaging lens assembly (100) having an optical axis (X') and comprising: a lens element (110b), wherein the optical axis (X') passes through the lens element (110b); a reflective element (120) arranged on an object side or an image side of the lens element (110b), and comprising: a first reflective surface (121) configured to fold the optical axis (X'); and a light-blocking element (130), wherein the light-blocking element (130) is opaque, the light-blocking element (130) is arranged corresponding to the lens element (110b) or the reflective element (120), and the light-blocking element (130) comprises: a first light-blocking surface (131) disposed between the lens element (110b) and the reflective element (120); and a plurality of protruding structures (132) arranged on the first light-blocking surface (131) and arranged in a two-dimensional array, wherein the protruding structures (132) and the first light-blocking surface (131) are formed integrally, a section of a bottom of each of the protruding structures (132) is circular, and each of the protruding structures (132) protrudes from the bottom in a direction away from the first light-blocking surface (131) such that an arc surface is formed on a tip of each of the protruding structures (132); wherein, on a section coinciding with the optical axis (X'), a first angle (θa2) is formed between the first light-blocking surface (131) and the optical axis (X'), the first angle (θa2) is θa and the following condition is satisfied: 0.86 < sin θ ≤ 1.

Description

BACKGROUNDTechnical field

[0001] The present disclosure relates to an imaging lens assembly. More specifically, the present disclosure relates to an imaging lens assembly applicable to portable electronic devices. Description of the state of the art

[0002] In recent years, wearable electronic devices have developed rapidly. For example, smart electronic devices and tablets have entered modern life, and imaging lens arrays mounted on wearable electronic devices have also proven successful. However, with technological advancements, the quality requirements for imaging lens arrays are becoming increasingly stringent. Therefore, an imaging lens array capable of reducing stray light must be developed. SUMMARY

[0003] According to one aspect of the present disclosure, an imaging lens assembly has an optical axis and includes a lens element, a reflective element, and a light-blocking element. 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 first reflective surface is configured to fold the optical axis. The light-blocking element is opaque, the light-blocking element is disposed corresponding to the lens element or the reflective element, and the light-blocking element includes a first light-blocking surface and a plurality of protruding structures. The first light-blocking surface is disposed between the lens element and the reflective element.The protruding structures are arranged on the first light-blocking surface and arranged in a two-dimensional array. The protruding structures and the first light-blocking surface are integrally formed. A section of a bottom of each of the protruding structures is circular, and each of the protruding structures protrudes from the bottom in a direction away from the first light-blocking surface such that an arc surface is formed on a tip of each of the protruding structures. On a section coincident with the optical axis, a first angle is formed between the first light-blocking surface and the optical axis. When the first angle is θa, the following condition is satisfied: 0.86 < sin θa ≤ 1.

[0004] According to the imaging lens arrangement of the previous aspect, when the first angle is θa, the following condition is satisfied: 0.96 < sin θa ≤ 1.

[0005] According to the imaging lens assembly of the preceding aspect, the first angle formed between the first light-blocking surface and the optical axis changes with a distance from the optical axis.

[0006] According to the imaging lens assembly of the preceding aspect, the first light-blocking surface faces the reflective element, the first light-blocking surface includes a backward inclined portion, and the backward inclined portion gradually moves away from the reflective element in a direction away from the optical axis.

[0007] According to the imaging lens assembly of the preceding aspect, the first angle is formed between the backward inclined portion and the optical axis. When the first angle is θa, the following condition is satisfied: -0.5 ≤ cos θa < 0.

[0008] According to the imaging lens assembly of the preceding aspect, the protruding structures are arranged in an array in a direction away from the optical axis. On the section coinciding with the optical axis, the tip of one of the protruding structures closest to the optical axis is taken as a reference point. When a distance between the reference point and the optical axis and in a direction perpendicular to the optical axis is X, and a distance between the reference point and the reflective element or between the reference point and the lens element facing the first light-blocking surface and in a direction parallel to the optical axis is Y, the following condition is satisfied: 0.03 < Y / X < 0.76.

[0009] According to the imaging lens assembly of the preceding aspect, the protruding structures are further arranged in an array in a direction surrounding the optical axis.

[0010] According to the imaging lens assembly of the preceding aspect, when a height of each of the protruding structures is H, the following condition is satisfied: 6 µm < H < 102 µm.

[0011] According to the imaging lens assembly of the preceding aspect, when the height of each of the protruding structures is H and a height difference between adjacent two of the protruding structures on the section coinciding with the optical axis is ΔH, the following condition is satisfied: 0.05 < ΔH / H < 0.55.

[0012] According to the imaging lens assembly of the preceding aspect, when the height difference between adjacent two of the protruding structures on the section coinciding with the optical axis is ΔH, the following condition is satisfied: 1.5 μm < ΔH < 29 μm.

[0013] According to the imaging lens assembly of the preceding aspect, a distance between adjacent two of the protruding structures is greater than the height of each of the protruding structures.

[0014] According to the imaging lens assembly of the preceding aspect, the light-blocking element further comprises a second light-blocking surface. The second light-blocking surface comprises a plurality of stripe structures, the stripe structures are arranged in an array in a direction surrounding the optical axis, and a cross-section of each of the stripe structures is triangular.

[0015] According to the imaging lens assembly of the preceding aspect, on the section coinciding with the optical axis, a second angle is formed between the second light-blocking surface and the optical axis. When the second angle is θb, the following condition is satisfied: 0.5 < cos θb < 1.

[0016] According to the imaging lens assembly of the preceding aspect, the reflective element further comprises a second reflective surface configured to refold the optical axis.

[0017] According to the imaging lens assembly of the preceding aspect, the reflective element further comprises an incident surface and an exit surface. The optical axis enters the reflective element through the incident surface. The optical axis exits the reflective element through the exit surface. The incident surface and the exit surface are the same surface.

[0018] According to the imaging lens assembly of the preceding aspect, a number of the lens elements is at least two and a distance between the at least two lens elements is variable.

[0019] According to one aspect of the present disclosure, an imaging lens assembly has an optical axis and includes a lens element, a reflective element, and a light-blocking element. 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 first reflective surface is configured to fold the optical axis. The light-blocking element is opaque, the light-blocking element is disposed corresponding to the lens element or the reflective element, and the light-blocking element includes a first light-blocking surface and a plurality of protruding structures. The first light-blocking surface is disposed between the lens element and the reflective element.The protruding structures are arranged on the first light-blocking surface and arranged in a two-dimensional array. The protruding structures and the first light-blocking surface are integrally formed, and each of the protruding structures protrudes from a bottom in a direction away from the first light-blocking surface. On a section coinciding with the optical axis, a first angle is formed between the first light-blocking surface and the optical axis. When the first angle is θa, the following condition is satisfied: 0.86 < sin θa ≤ 1.

[0020] According to the imaging lens arrangement of the previous aspect, when the first angle is θa, the following condition is satisfied: 0.96 < sin θa ≤ 1.

[0021] According to the imaging lens assembly of the preceding aspect, the first angle formed between the first light-blocking surface and the optical axis changes with a distance from the optical axis.

[0022] According to the imaging lens assembly of the preceding aspect, the first light-blocking surface faces the reflective element, the first light-blocking surface includes a backward inclined portion, and the backward inclined portion gradually moves away from the reflective element in a direction away from the optical axis.

[0023] According to the imaging lens assembly of the preceding aspect, the first angle is formed between the backward inclined portion and the optical axis. When the first angle is θa, the following condition is satisfied: -0.5 ≤ cos θa < 0.

[0024] According to the imaging lens assembly of the preceding aspect, the protruding structures are arranged in an array in a direction away from the optical axis. On the section coinciding with the optical axis, a tip of one of the protruding structures closest to the optical axis is taken as a reference point. When a distance between the reference point and the optical axis and in a direction perpendicular to the optical axis is X, and a distance between the reference point and the reflective element or between the reference point and the lens element facing the first light-blocking surface and in a direction parallel to the optical axis is Y, the following condition is satisfied: 0.03 < Y / X < 0.76.

[0025] According to the imaging lens assembly of the preceding aspect, the protruding structures are further arranged in an array in a direction surrounding the optical axis.

[0026] According to the imaging lens assembly of the preceding aspect, when a height of each of the protruding structures is H, the following condition is satisfied: 6 µm < H < 102 µm.

[0027] According to the imaging lens assembly of the preceding aspect, when the height of each of the protruding structures is H and a height difference between adjacent two of the protruding structures on the section coinciding with the optical axis is ΔH, the following condition is satisfied: 0.05 < ΔH / H < 0.55.

[0028] According to the imaging lens assembly of the preceding aspect, when the height difference between adjacent two of the protruding structures on the section coinciding with the optical axis is ΔH, the following condition is satisfied: 1.5 μm < ΔH < 29 μm.

[0029] According to the imaging lens assembly of the preceding aspect, a distance between adjacent two of the protruding structures is greater than the height of each of the protruding structures.

[0030] According to the imaging lens assembly of the preceding aspect, the light-blocking element further comprises a second light-blocking surface. The second light-blocking surface comprises a plurality of stripe structures, the stripe structures are arranged in an array in a direction surrounding the optical axis, and a cross-section of each of the stripe structures is triangular.

[0031] According to the imaging lens assembly of the preceding aspect, on the section coinciding with the optical axis, a second angle is formed between the second light-blocking surface and the optical axis. When the second angle is θb, the following condition is satisfied: 0.5 < cos θb < 1.

[0032] According to the imaging lens assembly of the preceding aspect, the reflective element further comprises a second reflective surface configured to refold the optical axis.

[0033] According to the imaging lens assembly of the preceding aspect, the reflective element further comprises an incident surface and an exit surface. The optical axis enters the reflective element through the incident surface. The optical axis exits the reflective element through the exit surface. The incident surface and the exit surface are the same surface.

[0034] According to one aspect of the present disclosure, an imaging lens assembly has an optical axis and includes an optical element, an image sensor, and a light-blocking element. The optical element is transparent to light, and the optical axis passes through the optical element. The image sensor is configured to detect light and is arranged corresponding to the optical element. The light-blocking element is opaque, the light-blocking element is arranged corresponding to one of the optical element and the image sensor, and the light-blocking element includes a first light-blocking surface and a plurality of protruding structures. The first light-blocking surface is arranged between the optical element and the image sensor.The protruding structures are arranged on the first light-blocking surface and arranged in a two-dimensional array. The protruding structures and the first light-blocking surface are integrally formed. A section of a bottom of each of the protruding structures is circular, and each of the protruding structures protrudes from the bottom in a direction away from the first light-blocking surface such that an arc surface is formed on a tip of each of the protruding structures. On a section coincident with the optical axis, a first angle is formed between the first light-blocking surface and the optical axis. When the first angle is θa, the following condition is satisfied: 0.86 < sin θa ≤ 1.

[0035] According to the imaging lens arrangement of the previous aspect, when the first angle is θa, the following condition is satisfied: 0.96 < sin θa ≤ 1.

[0036] According to the imaging lens assembly of the preceding aspect, the first angle formed between the first light-blocking surface and the optical axis changes with a distance from the optical axis.

[0037] According to the imaging lens assembly of the preceding aspect, the first light-blocking surface faces the optical element, the first light-blocking surface includes a backward inclined portion, and the backward inclined portion gradually moves away from the optical element in a direction away from the optical axis.

[0038] According to the imaging lens assembly of the preceding aspect, the first angle is formed between the backward inclined portion and the optical axis. When the first angle is θa, the following condition is satisfied: -0.5 ≤ cos θa < 0.

[0039] According to the imaging lens assembly of the preceding aspect, the protruding structures are arranged in an array in a direction away from the optical axis. On the section coinciding with the optical axis, the tip of one of the protruding structures closest to the optical axis is taken as a reference point. When a distance between the reference point and the optical axis and in a direction perpendicular to the optical axis is X, and a distance between the reference point and the optical element facing the first light-blocking surface and in a direction parallel to the optical axis is Y2, the following condition is satisfied: 0.03 < Y2 / X < 0.76.

[0040] According to the imaging lens assembly of the preceding aspect, the protruding structures are further arranged in an array in a direction surrounding the optical axis.

[0041] According to the imaging lens assembly of the preceding aspect, when a height of each of the protruding structures is H, the following condition is satisfied: 6 µm < H < 102 µm.

[0042] According to the imaging lens assembly of the preceding aspect, when the height of each of the protruding structures is H and a height difference between adjacent two of the protruding structures on the section coinciding with the optical axis is ΔH, the following condition is satisfied: 0.05 < ΔH / H < 0.55.

[0043] According to the imaging lens assembly of the preceding aspect, a distance between adjacent two of the protruding structures is greater than the height of each of the protruding structures.

[0044] According to the imaging lens assembly of the preceding aspect, the light-blocking element further comprises a second light-blocking surface. The second light-blocking surface comprises a plurality of stripe structures, the stripe structures are arranged in an array in a direction surrounding the optical axis, and a cross-section of each of the stripe structures is triangular.

[0045] According to the imaging lens assembly of the preceding aspect, on the section coinciding with the optical axis, a second angle is formed between the second light-blocking surface and the optical axis. When the second angle is θb, the following condition is satisfied: 0.5 < cos θb < 1.

[0046] According to one aspect of the present disclosure, an imaging lens assembly has an optical axis and includes a lens element and a light-blocking element. The optical axis passes through the lens element. The light-blocking element is opaque, the light-blocking element is arranged correspondingly to the lens element, and the light-blocking element includes a first light-blocking surface and a plurality of protruding structures. The first light-blocking surface faces an image side and is arranged adjacent to the lens element.The protruding structures are arranged on the first light-blocking surface and arranged in a two-dimensional array. The protruding structures and the first light-blocking surface are integrally formed. A section of a bottom of each of the protruding structures is circular, and each of the protruding structures protrudes from the bottom in a direction away from the first light-blocking surface such that an arc surface is formed on a tip of each of the protruding structures. On a section coincident with the optical axis, a first angle is formed between the first light-blocking surface and the optical axis. When the first angle is θa, the following condition is satisfied: 0.86 < sin θa ≤ 1.

[0047] According to the imaging lens arrangement of the previous aspect, when the first angle is θa, the following condition is satisfied: 0.96 < sin θa ≤ 1.

[0048] According to the imaging lens assembly of the preceding aspect, the first angle formed between the first light-blocking surface and the optical axis changes with a distance from the optical axis.

[0049] According to the imaging lens assembly of the preceding aspect, the first light-blocking surface faces the lens element, the first light-blocking surface includes a backward inclined portion, and the backward inclined portion gradually moves away from the lens element in a direction away from the optical axis.

[0050] According to the imaging lens assembly of the preceding aspect, the first angle is formed between the backward inclined portion and the optical axis. When the first angle is θa, the following condition is satisfied: -0.5 ≤ cos θa < 0.

[0051] According to the imaging lens assembly of the preceding aspect, the protruding structures are arranged in an array in a direction away from the optical axis. On the section coinciding with the optical axis, the tip of one of the protruding structures closest to the optical axis is taken as a reference point. When a distance between the reference point and the optical axis and in a direction perpendicular to the optical axis is X, and a distance between the reference point and the lens element facing the first light-blocking surface and in a direction parallel to the optical axis is Y, the following condition is satisfied: 0.03 < Y / X < 0.76.

[0052] According to the imaging lens assembly of the preceding aspect, the protruding structures are further arranged in an array in a direction surrounding the optical axis.

[0053] According to the imaging lens assembly of the preceding aspect, when a height of each of the protruding structures is H, the following condition is satisfied: 6 µm < H < 102 µm.

[0054] According to the imaging lens assembly of the preceding aspect, when the height of each of the protruding structures is H and a height difference between adjacent two of the protruding structures on the section coinciding with the optical axis is ΔH, the following condition is satisfied: 0.05 < ΔH / H < 0.55.

[0055] According to the imaging lens assembly of the preceding aspect, when the height difference between adjacent two of the protruding structures on the section coinciding with the optical axis is ΔH, the following condition is satisfied: 1.5 μm < ΔH < 29 μm.

[0056] According to the imaging lens assembly of the preceding aspect, a distance between adjacent two of the protruding structures is greater than the height of each of the protruding structures.

[0057] According to the imaging lens assembly of the preceding aspect, the light-blocking element further comprises a second light-blocking surface. The second light-blocking surface comprises a plurality of stripe structures, the stripe structures are arranged in an array in a direction surrounding the optical axis, and a cross-section of each of the stripe structures is triangular.

[0058] According to the imaging lens assembly of the preceding aspect, on the section coinciding with the optical axis, a second angle is formed between the second light-blocking surface and the optical axis. When the second angle is θb, the following condition is satisfied: 0.5 < cos θb < 1.

[0059] According to one aspect of the present disclosure, an electronic device includes the imaging lens assembly of any of the foregoing aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The present disclosure will be better understood by reading the following detailed description of the embodiment with reference to the accompanying drawings as follows: Fig. 1A is a schematic view of an imaging lens assembly according to the first example of the first embodiment of the present disclosure. Fig. Fig. 1B is a partially enlarged view of the imaging lens assembly according to the first example of the first embodiment in Fig. 1A. Fig. 1C is a three-dimensional view of a lens element and a light-blocking element according to the first example of the first embodiment in Fig. 1A. Fig. 1D is a partially enlarged view of the light-blocking member according to the first example of the first embodiment in Fig. 1A. Fig. 1E is a schematic view of the light-blocking element according to the first example of the first embodiment in Fig. 1D. Fig. Fig. 1F is a cross-sectional view of the light-blocking element taken along a section line 1F-1F according to the first example of the first embodiment in Fig. 1E. Fig. 1G is a partially enlarged view of a light-blocking member according to the second example of the first embodiment of the present disclosure. Fig. 1H is a cross-sectional view of the light-blocking member according to the second example of the first embodiment in Fig. 1G. Fig. 1I is a partially enlarged view of the imaging lens assembly according to the third example of the first embodiment of the present disclosure. Fig. 1J is a schematic view of an image sensor and a light-blocking element according to the third example of the first embodiment in Fig. 1I. Fig. 2A is a schematic view of an imaging lens assembly according to the first example of the second embodiment of the present disclosure. Fig. Fig. 2B is a partially enlarged view of the imaging lens assembly according to the first example of the second embodiment in Fig. 2A. Fig. 2C is a partial three-dimensional view of the imaging lens assembly according to the first example of the second embodiment in Fig. 2A. Fig. 2D is a schematic view of the imaging lens assembly according to the second example of the second embodiment of the present disclosure. Fig. 2E is a three-dimensional view of the lens element and a light-blocking element according to the second example of the second embodiment in Fig. 2D. Fig. 3A is a schematic view of an imaging lens assembly according to the first example of the third embodiment of the present disclosure. Fig. 3B is a partially enlarged view of a light-blocking member according to the first example of the third embodiment in Fig. 3A. Fig. 4A is a schematic view of an electronic device according to the fourth embodiment of the present disclosure. Fig. Fig. 4B is another schematic view of the electronic device according to the fourth embodiment in Fig. 4A. Fig. Fig. 4C is a schematic view of an image transmitted via the electronic device according to the fourth embodiment in Fig. 4A was recorded. Fig. Fig. 4D is a schematic view of another image transmitted via the electronic device according to the fourth embodiment in Fig. 4A was recorded. Fig. Fig. 4E is a schematic view of another image displayed on the electronic device according to the fourth embodiment in Fig. 4A was recorded. Fig. 5 is a schematic view of an electronic device according to the fifth embodiment of the present disclosure. Fig. 6A is a schematic view of a vehicle instrument according to the sixth embodiment of the present disclosure. Fig. Fig. 6B is another schematic view of the vehicle instrument according to the sixth embodiment in Fig. 6A. Fig. 6C is another schematic view of the vehicle instrument according to the sixth embodiment in Fig. 6A. DETAILED DESCRIPTION

[0061] The present disclosure provides an imaging lens assembly. The imaging lens assembly has an optical axis and includes a lens element and a light-blocking element, and the optical axis passes through the lens element. The light-blocking element is opaque, and the light-blocking element includes a first light-blocking surface and a plurality of protruding structures. The protruding structures are arranged on the first light-blocking surface and configured in a two-dimensional array. The protruding structures and the first light-blocking surface are integrally formed, with each of the protruding structures protruding from a bottom in a direction away from the first light-blocking surface.On a section coinciding with the optical axis, a first angle is formed between the first light-blocking surface and the optical axis. When the first angle is θa, the following condition is satisfied: 0.86 < sin θa ≤ 1. Specifically, the two-dimensional array can be a linear array, a curved array, a circular array, etc., and a light trapping structure can be formed by the protruding structures provided in the two-dimensional array. Therefore, it is beneficial for reducing stray light. When the first angle satisfies the condition, it is beneficial for the stray light entering the protruding structures, so that the stray light between the protruding structures is reduced, and it is beneficial for improving the shape quality of the protruding structures. Furthermore, when the first angle is θa, the following condition is satisfied: 0.96 < sin θa ≤ 1.

[0062] The light-blocking element may be arranged corresponding to the lens element, the first light-blocking surface of the light-blocking element may face an image side, and the first light-blocking surface may be arranged adjacent to the lens element.

[0063] Furthermore, the imaging lens assembly may further comprise a reflective element. The reflective element may be disposed on an object side or an image side of the lens element and may comprise a first reflective surface. The first reflective surface is configured to fold the optical axis. Furthermore, the light-blocking element may be disposed corresponding to the lens element or the reflective element, and the first light-blocking surface may be disposed between the lens element and the reflective element.

[0064] Furthermore, a section of the bottom of each of the protruding structures may be circular, and each of the protruding structures protrudes from the bottom in a direction away from the first light-blocking surface such that an arc surface is formed on a tip of each of the protruding structures. Therefore, if the section of the bottom of each of the protruding structures is circular, it is beneficial for reducing stray light between the protruding structures.

[0065] The first angle formed between the first light-blocking surface and the optical axis can vary with distance from the optical axis. Therefore, it is beneficial for reducing the effects caused by stray light from different incident directions. In particular, the first angle formed between the first light-blocking surface and the optical axis is not constant.

[0066] Furthermore, the first light-blocking surface faces the reflective element. The first light-blocking surface may include a backward-sloping portion, and the backward-sloping portion gradually moves away from the reflective element in a direction away from the optical axis. Therefore, it is favorable for directing stray light to the outside of the reflective element.

[0067] The first angle is formed between the backward inclined portion and the optical axis, when the first angle is θa, the following condition can be satisfied: -0.5 ≤ cos θa < 0.

[0068] The protruding structures are arranged in an array in a direction away from the optical axis. On the section coincident with the optical axis, the tip of one of the protruding structures closest to the optical axis is taken as a reference point. When a distance between the reference point and the optical axis and in a direction perpendicular to the optical axis is X, and a distance between the reference point and the reflective element or between the reference point and the lens element facing the first light-blocking surface and in a direction parallel to the optical axis is Y, the following condition can be satisfied: 0.03 < Y / X < 0.76.When the arrangement of the protruding structures satisfies the condition, it is favorable for the stray light to enter the light trap structure formed by the protruding structures arranged in the two-dimensional array, so that the effect of reducing the stray light can be improved.

[0069] Furthermore, the protruding structures can be arranged in an array in a direction surrounding the optical axis. Therefore, it is advantageous to reduce stray light incident from various directions by means of the protruding structures arranged in the two-dimensional array and to improve the effect of the light trapping structure in destroying stray light.

[0070] When the height of each protruding structure is H, the following condition can be satisfied: 6 µm < H < 102 µm. Therefore, the light trapping structure has sufficient ability to trap the scattered light. Specifically, when the first light-blocking surface is an inclined surface, the height of each protruding structure is calculated according to a central axis of each protruding structure.

[0071] When the height of each of the protruding structures is H and the height difference between adjacent two of the protruding structures on the section coinciding with the optical axis is ΔH, the following condition can be satisfied: 0.05 < ΔH / H < 0.55. Specifically, a reasonable ratio of the height difference to the height is favorable for trapping stray light.

[0072] If the height difference between adjacent two protruding structures on the section coinciding with the optical axis is ΔH, the following condition can be met: 1.5 µm < ΔH < 29 µm. In particular, a reasonable height difference is favorable for the stray light entering the protruding structures. Therefore, the stray light can be reduced by the protruding structures.

[0073] The distance between adjacent two protruding structures may be greater than the height of each protruding structure. Therefore, it is favorable for scattered light reflected between the protruding structures, thereby reducing the scattered light. Specifically, the distance between adjacent two protruding structures is calculated according to the center axes of the adjacent two protruding structures.

[0074] The light-blocking element may further comprise a second light-blocking surface. The second light-blocking surface may comprise a plurality of striped structures. The striped structures are arranged in an array in a direction surrounding the optical axis, and a cross section of each of the striped structures is triangular. Therefore, it is advantageous for reducing various types of stray light.

[0075] On the section coinciding with the optical axis, a second angle is formed between the second light-blocking surface and the optical axis. When the second angle is θa, the following condition can be satisfied: 0.5 < cos θb < 1. Specifically, when the second angle formed between the second light-blocking surface and the optical axis is too small to arrange the protruding structures, the stripe structures are beneficial for preventing the generation of stray light on the second light-blocking surface. In particular, the combination of the backward inclined portion and the second light-blocking surface can form a groove-like structure.Furthermore, the light-blocking member having the backward inclined portion with the second light-blocking surface can be designed so that a stop mechanism of the light-blocking member can be easily designed to abut against other members.

[0076] The reflective element may further comprise a second reflective surface configured to refold the optical axis. Therefore, it is beneficial for densifying the volume of the imaging lens assembly.

[0077] The reflective element may further comprise an incident surface and an exit surface, wherein the optical axis enters the reflective element through the incident surface and the optical axis exits the reflective element through the exit surface, wherein the incident surface and the exit surface are the same surface. Therefore, it is advantageous for densifying the volume of the imaging lens assembly.

[0078] The number of lens elements can be at least two, and the distance between two lens elements can be varied. Therefore, it is advantageous for the imaging lens assembly to have the ability to change the recording focal length.

[0079] The present disclosure provides an imaging lens assembly. The imaging lens assembly has an optical axis and includes an optical element, an image sensor, and a light-blocking element. The optical element is transparent to light, and the optical axis passes through the optical element. The image sensor is configured to detect light and is arranged corresponding to the optical element. The light-blocking element is opaque to light, the light-blocking element is arranged corresponding to one of the optical element and the image sensor, and the light-blocking element includes a first light-blocking surface and a plurality of protruding structures. The first light-blocking surface is arranged between the optical element and the image sensor.The protruding structures are arranged on the first light-blocking surface and arranged in a two-dimensional array. The protruding structures and the first light-blocking surface are integrally formed, and a section of a bottom of each of the protruding structures is circular. Each of the protruding structures protrudes from the bottom in a direction away from the first light-blocking surface such that an arc surface is formed on a tip of each of the protruding structures. On a section coincident with the optical axis, a first angle is formed between the first light-blocking surface and the optical axis. When the first angle is θa, the following condition is satisfied: 0.86 < sin θa ≤ 1.In particular, the image sensor can be moved relative to the optical element, thereby achieving the functions of optical focusing and optical image stabilization. Furthermore, the two-dimensional array can be a linear array, a curved array, a circular array, etc., and a light trap structure can be formed by the protruding structures provided in the two-dimensional array. Therefore, it is beneficial for reducing stray light. When the first angle satisfies the condition, it is favorable for stray light entering the protruding structures, reducing stray light between the protruding structures, and it is beneficial for improving the shape quality of the protruding structures. Furthermore, when the first angle is θa, the following condition can be satisfied: 0.96 < sin θa ≤ 1.

[0080] The first angle formed between the first light-blocking surface and the optical axis can vary with distance from the optical axis. Therefore, it is beneficial for reducing the effects caused by stray light from different incident directions. In particular, the first angle formed between the first light-blocking surface and the optical axis is not constant.

[0081] Furthermore, the first light-blocking surface faces the optical element. The first light-blocking surface may include a backward inclined portion, and the backward inclined portion gradually moves away from the optical element in a direction away from the optical axis. Therefore, it is favorable for directing stray light to the outside of the reflective element.

[0082] The first angle is formed between the backward inclined portion and the optical axis, when the first angle is θa, the following condition can be satisfied: -0.5 ≤ cos θa < 0.

[0083] The protruding structures are arranged in an array in a direction away from the optical axis. On the section coinciding with the optical axis, the tip of one of the protruding structures closest to the optical axis is taken as a reference point. When a distance between the reference point and the optical axis and in a direction perpendicular to the optical axis is X, and a distance between the reference point and the optical element facing the first light-blocking surface and in a direction parallel to the optical axis is Y2, the following condition can be satisfied: 0.03 < Y2 / X < 0.76. When the arrangement of the protruding structures satisfies the condition, it is favorable for the stray light to enter the light trap structure formed by the protruding structures arranged in the two-dimensional array, so the effect of reducing stray light can be improved.

[0084] The protruding structures can also be arranged in an array in a direction surrounding the optical axis. Therefore, it is advantageous to reduce stray light incident from various directions by means of the protruding structures arranged in the two-dimensional array and to improve the effect of the light trapping structure in destroying stray light.

[0085] When the height of each protruding structure is H, the following condition can be satisfied: 6 µm < H < 102 µm. Therefore, the light trapping structure has sufficient ability to trap the scattered light. Specifically, when the first light-blocking surface is an inclined surface, the height of each protruding structure is calculated according to a central axis of each protruding structure.

[0086] When the height of each of the protruding structures is H and the height difference between adjacent two of the protruding structures on the section coinciding with the optical axis is ΔH, the following condition can be satisfied: 0.05 < ΔH / H < 0.55. Specifically, a reasonable ratio of the height difference to the height is favorable for trapping stray light.

[0087] The distance between adjacent two protruding structures is greater than the height of each protruding structure. Therefore, it is favorable for scattered light to be reflected between the protruding structures, thereby reducing the scattered light. Specifically, the distance between adjacent two protruding structures is calculated according to the center axes of the adjacent two protruding structures.

[0088] The light-blocking element may further comprise a second light-blocking surface. The second light-blocking surface may comprise a plurality of striped structures. The striped structures are arranged in an array in a direction surrounding the optical axis, and a cross-section of each of the striped structures is triangular. Therefore, it is advantageous for reducing various types of stray light.

[0089] On the section coinciding with the optical axis, a second angle is formed between the second light-blocking surface and the optical axis. When the second angle is θa, the following condition can be satisfied: 0.5 < cos θb < 1. Specifically, when the second angle formed between the second light-blocking surface and the optical axis is too small to arrange the protruding structures, the stripe structures are beneficial for preventing the generation of stray light on the second light-blocking surface. In particular, the combination of the backward inclined portion and the second light-blocking surface can form a groove-like structure.Furthermore, the light-blocking member having the backward inclined portion with the second light-blocking surface can be designed so that a stop mechanism of the light-blocking member can be easily designed to abut against other members.

[0090] Each of the above-mentioned features of the imaging lens arrangement can be used in various combinations to achieve the corresponding effects.

[0091] The present disclosure provides an electronic device including the aforementioned imaging lens assembly.

[0092] According to the above-mentioned embodiment, specific examples are provided and illustrated via figures. <Erste Ausführungsform>

[0093] Fig. 1A is a schematic view of an imaging lens assembly 100 according to the first example of the first embodiment of the present disclosure, Fig. Fig. 1B is a partially enlarged view of the imaging lens assembly 100 according to the first example of the first embodiment in Fig. 1A, and Fig. Fig. 1C is a three-dimensional view of a lens element 110b and a light-blocking element 130 according to the first example of the first embodiment in Fig. 1A. In Fig. 1A to Fig. 1C, the imaging lens assembly 100 has an optical axis X' and includes a plurality of lens elements 110a, 110, 110b, a reflective element 120, and a light-blocking element 130. The optical axis X' extends through the lens elements 110a, 110, 110b. The lens elements 110a, 110, 110b are each arranged in a first lens barrel 101 and a second lens barrel 102 and along the optical axis X' from an object side of the imaging lens assembly 100 to an image side of the imaging lens assembly 100. The light-blocking element 130 is arranged on a side of the second lens barrel 102 closest to the image. The reflective element 120 is arranged on an image side of the lens element 110b and includes at least one reflective surface. In particular, the reflective element 120 is arranged between the lens elements 110a, 110, 110b and an image surface IMG through a third lens barrel 103.Furthermore, a distance between two of the lens elements 110a, 110, 110b is variable. Specifically, the lens element 110a may be a ground glass lens element, the lens element 110b may be a plastic lens element, the light-blocking element 130 may be a holder, and the other lens element 110 may be a ground glass lens element or a plastic lens element, depending on requirements, but they are not limited thereto.

[0094] The reflective surfaces of the reflective element 120 may be a first reflective surface 121, a second reflective surface 122, and a third reflective surface 123, and all of the reflective surfaces 121, 122, 123 are configured to fold the optical axis X'. Furthermore, the first reflective surface 121 is configured to fold the optical axis X' a first time, the third reflective surface 123 is configured to fold the optical axis X' a second time, and the second reflective surface 122 is configured to fold the optical axis X' a third time.The reflective element 120 may further include an incident surface (the reference numeral of which has been omitted) and an exit surface (the reference numeral of which has been omitted), the optical axis X' enters the reflective element 120 through the incident surface and the optical axis X' exits the reflective element 120 through the exit surface, wherein the incident surface and the exit surface are the same surface and the third reflective surface 123, the incident surface and the exit surface are coplanar.

[0095] The light-blocking element 130 is opaque, the light-blocking element 130 is arranged corresponding to the reflective element 120, and the light-blocking element 130 includes a first light-blocking surface 131 and a plurality of protruding structures 132. The first light-blocking surface 131 is arranged between the lens element 110b and the reflective element 120.

[0096] In Fig. 1B, the protruding structures 132 are arranged in an array in a direction away from the optical axis X'. On a section coincident with the optical axis X', a tip of one of the protruding structures 132 closest to the optical axis X' is taken as a reference point B, a distance between the reference point B and the optical axis X' and in a direction perpendicular to the optical axis X' is X, and a distance between the reference point B and the reflective element 120 facing the first light-blocking surface 131 and in a direction parallel to the optical axis X' is Y. In the first example of the first embodiment, X = 1.51 mm, Y = 0.26 mm, and Y / X = 0.17.

[0097] A height of each of the protruding structures 132 is H, and a height difference between adjacent two of the protruding structures 132 on the section coinciding with the optical axis X' is ΔH. In the first example of the first embodiment, H = 30 μm, ΔH = 3.5 μm, and ΔH / H = 0.12. Further, a distance between adjacent two of the protruding structures 132 is greater than the height H of each of the protruding structures 132. Specifically, the distance between adjacent two of the protruding structures 132 is calculated according to center axes of the adjacent two of the protruding structures 132.

[0098] Fig. 1D is a partially enlarged view of the light-blocking member 130 according to the first example of the first embodiment in Fig. 1A, Fig. 1E is a schematic view of the light-blocking element 130 according to the first example of the first embodiment in Fig. 1D and Fig. Fig. 1F is a cross-sectional view of the light-blocking element 130 taken along a section line 1F-1F according to the first example of the first embodiment in Fig. 1E. In Fig. 1B, Fig. 1D to Fig. 1E, the protruding structures 132 are arranged on the first light-blocking surface 131 and configured in a two-dimensional array. The protruding structures 132 and the first light-blocking surface 131 are integrally formed. A section of a bottom of each of the protruding structures 132 is circular, and each of the protruding structures 132 protrudes from the bottom in a direction away from the first light-blocking surface 131 such that an arc surface is formed on the tip of each of the protruding structures 132. Furthermore, the protruding structures 132 may be further configured in an array in a direction surrounding the optical axis X'. Specifically, the two-dimensional array may be a linear array, a curved array, a circular array, etc.and a light trap structure can be formed by means of the protruding structures 132 arranged in the two-dimensional array, but they are not limited thereto.

[0099] In Fig. 1B and Fig. 1F, on the section coinciding with the optical axis X', first angles are formed between the first light-blocking surface 131 and the optical axis X', and the first angles are θa1, θa2, and θa3. In the first example of the first embodiment, θa1 = 85°, θa2 = 110°, θa3 = 110°, and sinθa1 = 0.996, sinθa2 = 0.94, sinθa3 = 0.94, cosθa2 = -0.342, cosθa3 = -0.342. Furthermore, the first angles θa1, θa2, and θa3 formed between the first light-blocking surface 131 and the optical axis X' may change with a distance from the optical axis X'.

[0100] Further, the first light-blocking surface 131 faces the reflective element 120, the first light-blocking surface 131 may include two backward inclined portions 133, 134, and the backward inclined portions 133, 134 gradually move away from the reflective element 120 in a direction away from the optical axis X'.

[0101] The light-blocking element 130 may further include two second light-blocking surfaces 135, 136. The second light-blocking surfaces 135, 136 may include a plurality of stripe structures 137. The stripe structures 137 are arranged in an array in a direction surrounding the optical axis X', and a cross section of each of the stripe structures 137 is triangular. Furthermore, on the section coinciding with the optical axis X', second angles are formed between the second light-blocking surfaces 135, 136 and the optical axis X'. The second angles are θb1, θb2. In the first example of the first embodiment, θb1 = 3.6°, θb2 = 30°, and cosθb1 = 0.998, cosθb2 = 0.866.

[0102] Fig. 1G is a partially enlarged view of a light-blocking member 140 according to the second example of the first embodiment of the present disclosure, and Fig. 1H is a cross-sectional view of the light-blocking member 140 according to the second example of the first embodiment in Fig. 1G. The structures, positions, and connection relationships of the elements according to the second example of the first embodiment are the same as or similar to the elements according to the first example of the first embodiment. The difference is that the light-blocking element 140 according to the second example of the first embodiment includes first light-blocking surfaces 141 and a plurality of protruding structures 142. The first light-blocking surfaces 141 may further include two backward inclined portions 143, 144. Moreover, the light-blocking element 140 may further include a second light-blocking surface 145. The second light-blocking surface 145 may include a plurality of stripe structures 147. The stripe structures 147 are arranged in an array in a direction surrounding the optical axis X', and a cross section of each of the stripe structures 147 is triangular.Specifically, the protruding structures 142 of the light-blocking member 140 may be further disposed on one of the first light-blocking surfaces 141 on the rearwardly inclined portion 143 and on the other of the first light-blocking surfaces 141 between the second light-blocking surface 145 and the rearwardly inclined portion 143.

[0103] The structures, positions, and connection relationships of the other elements according to the second example of the first embodiment are the same as the elements according to the first example of the first embodiment and will not be described again here.

[0104] Fig. 1I is a partially enlarged view of the imaging lens assembly 100 according to the third example of the first embodiment of the present disclosure, and Fig. Fig. 1J is a schematic view of an image sensor 150 and a light-blocking element 160 according to the third example of the first embodiment in Fig. 11. In Fig. 1I and Fig. 1J, the structures, positions, and connection relationships of the elements according to the third example of the first embodiment are the same as or similar to the elements according to the first example of the first embodiment. The difference is that the image sensor 150 of the imaging lens assembly 100 according to the third example of the first embodiment is arranged in a light-blocking element 160 and corresponds to the reflective element 120, and the light-blocking element 160 corresponds to the reflective element 120. Specifically, the reflective element 120 is light-transmitting, and the image sensor 150 is configured to detect light. The light-blocking element 160 includes a first light-blocking surface 161 and a plurality of protruding structures 162. The first light-blocking surface 161 is arranged between the reflective element 120 and the image sensor 150.The protruding structures 162 are arranged on the first light-blocking surface 161 and arranged in a two-dimensional array. The protruding structures 162 and the first light-blocking surface 161 are integrally formed, and a section of a bottom of each of the protruding structures 162 is circular. Each of the protruding structures 162 protrudes from the bottom in a direction away from the first light-blocking surface 161 such that an arc surface is formed on a tip of each of the protruding structures 162. Further, the protruding structures 162 may be arranged in an array in a direction surrounding the optical axis X'. In particular, the light-blocking element 160 may be an image sensor base, but is not limited thereto.

[0105] In Fig. 1I, on a section coinciding with the optical axis X', a first angle is formed between the first light-blocking surface 161 and the optical axis X', and the first angle is θa. In the third example of the first embodiment, θa = 90° and sinθa = 1. Furthermore, the first angles θa formed between the first light-blocking surface 161 and the optical axis X' may change with a distance from the optical axis X'.

[0106] The protruding structures 162 are arranged in an array in a direction away from the optical axis X'. On the section coincident with the optical axis X', a tip of one of the protruding structures 162 closest to the optical axis X' is taken as a reference point B, a distance between the reference point B and the optical axis X' and in a direction perpendicular to the optical axis X' is X2, and a distance between the reference point B and the reflective element 120, which the first light-blocking surface 161 faces, and in a direction parallel to the optical axis X' is Y2. In the third example of the first embodiment, X2 = 2.3 mm, Y2 = 1.32 mm, and Y2 / X2 = 0.57. Moreover, a height of each of the protruding structures 162 is H2. In the third example of the first embodiment, H2 = 85 µm.Further, a distance between adjacent two of the protruding structures 162 is greater than the height H2 of each of the protruding structures 162. Specifically, the distance between adjacent two of the protruding structures 162 is calculated according to center axes of the adjacent two of the protruding structures 162.

[0107] The structures, positions, and connection relationships of the other elements according to the third example of the first embodiment are the same as the elements according to the first example of the first embodiment and will not be described again here. <Zweite Ausführungsform>

[0108] Fig. 2A is a schematic view of an imaging lens assembly 200 according to the first example of the second embodiment of the present disclosure, Fig. 2B is an enlarged partial view of the imaging lens assembly 200 according to the first example of the second embodiment in Fig. 2A and Fig. 2C is a partial three-dimensional view of the imaging lens assembly 200 according to the first example of the second embodiment in Fig. 2A. In the Fig. 2A to 2C, the imaging lens assembly 200 has an optical axis X' and includes a plurality of lens elements 210a, 210b, 210c, 210d, 210e, 210f, a reflective element 220, and a light-blocking element 230, and the optical axis X' passes through the lens elements 210a, 210b, 210c, 210d, 210e, 210f. The lens elements 210a, 210b, 210c, 210d, 210e, 210f are arranged in a first lens barrel 201 and a second lens barrel 202, respectively, and along the optical axis X' from an object side of the imaging lens assembly 200 to an image side of the imaging lens assembly 200. The reflective element 220 is arranged on an object side of the lens element 210a and includes a first reflective surface 221. The first reflective surface 221 is configured to fold the optical axis X'.The reflective element 220 may further include an incident surface 2201 and an exit surface 2202. The optical axis X' enters the reflective element 220 through the incident surface 2201, and the optical axis X' exits the reflective element 220 through the exit surface 2202. Furthermore, an image surface IMG is located on an image side of the lens element 210f. Specifically, the lens element 210a may be a molded glass lens element; the other lens elements 210b, 210c, 210d, 210e, 210f may independently be a ground glass lens element or a plastic lens element according to requirements; and the light-blocking element 230 may be a holder for a reflective element, but are not limited thereto. Furthermore, a distance between two of the lens elements 210a, 210b, 210c, 210d, 210e, 210f is variable.

[0109] The light-blocking element 230 is opaque, the light-blocking element 230 is arranged corresponding to the lens element 210a, and the light-blocking element 230 includes a first light-blocking surface 231 and a plurality of protruding structures 232. The first light-blocking surface 231 is arranged between the lens element 210a and the reflective element 220.

[0110] In Fig. 2B and Fig. 2C, the protruding structures 232 are arranged on the first light-blocking surface 231 and arranged in a two-dimensional array, the protruding structures 232 and the first light-blocking surface 231 are integrally formed, and each of the protruding structures 232 protrudes from a bottom in a direction away from the first light-blocking surface 231.

[0111] On a section coinciding with the optical axis X', a first angle is formed between the first light-blocking surface 231 and the optical axis X', and the first angle is θa. In the first example of the second embodiment, θa = 90° and sin θa = 1. Furthermore, the first angle θa formed between the first light-blocking surface 231 and the optical axis X' may change with a distance from the optical axis X'.

[0112] The protruding structures 232 are arranged in an array in a direction away from the optical axis X'. On the section coincident with the optical axis X', a tip of one of the protruding structures 232 closest to the optical axis X' is taken as a reference point B, a distance between the reference point B and the optical axis X' and in a direction perpendicular to the optical axis X' is X, and a distance between the reference point B and the lens element 210a, which the first light-blocking surface 231 faces, and in a direction parallel to the optical axis X' is Y. In the first example of the second embodiment, X = 2.44 mm, Y = 1.56 mm, and Y / X = 0.64. Moreover, a height of each of the protruding structures 232 is H. In the first example of the second embodiment, H2 = 40 µm.Further, a distance between adjacent two of the protruding structures 232 is greater than the height H of each of the protruding structures 232. Specifically, the distance between adjacent two of the protruding structures 232 is calculated according to center axes of the adjacent two of the protruding structures 232.

[0113] Fig. 2D is a schematic view of the imaging lens assembly 200 according to the second example of the second embodiment of the present disclosure and Fig. Fig. 2E is a three-dimensional view of the lens element 210d and a light-blocking element 240 according to the second example of the second embodiment in Fig. 2D. In Fig. 2D and Fig. 2E, the structures, positions, and connection relationships of the elements according to the second example of the second embodiment are the same as or similar to the elements according to the first example of the second embodiment. The difference is that the lens elements 210d, 210e, 210f of the imaging lens assembly 200 according to the second example of the second embodiment are arranged in the light-blocking element 240. In particular, the light-blocking element 240 may be a tube, but is not limited thereto.

[0114] The light-blocking element 240 is opaque, and the light-blocking element 240 includes a first light-blocking surface 241 and a plurality of protruding structures 242. The first light-blocking surface 241 is disposed between the lens element 210c and the lens element 210d.

[0115] The protruding structures 242 are arranged on the first light-blocking surface 241 and arranged in a two-dimensional array. The protruding structures 242 and the first light-blocking surface 241 are integrally formed. A section of a bottom of each of the protruding structures 242 is circular. Each of the protruding structures 242 protrudes from the bottom in a direction away from the first light-blocking surface 241 such that an arc surface is formed on a tip of each of the protruding structures 242. The protruding structures 242 may further be arranged in an array in a direction surrounding the optical axis X'. In particular, a light trapping structure may be formed by the protruding structures 242 arranged in the two-dimensional array, but is not limited thereto.

[0116] The protruding structures 242 are arranged in an array in a direction away from the optical axis X'. On the section coinciding with the optical axis X', the tip of one of the protruding structures 242 closest to the optical axis X' is taken as a reference point B, a distance between the reference point B and the optical axis X' and in a direction perpendicular to the optical axis X' is X, and a distance between the reference point B and the lens element 210c, to which the first light-blocking surface 241 faces, and in a direction parallel to the optical axis X' is Y. In the second example of the second embodiment, X = 2.51 mm, Y = 1.29 mm, and Y / X = 0.51. Moreover, a height of each of the protruding structures 242 is H, and a height difference between adjacent two of the protruding structures 242 on the section coinciding with the optical axis is ΔH.In the second example of the second embodiment, H = 40 µm, ΔH = 10 µm, and ΔH / H = 0.25. A distance between adjacent two of the protruding structures 242 is greater than the height H of each of the protruding structures 242. Specifically, the distance between adjacent two of the protruding structures 242 is calculated according to the center axes of the adjacent two of the protruding structures 242.

[0117] On the section coinciding with the optical axis X', a first angle is formed between the first light-blocking surface 241 and the optical axis X', and the first angle is θa. In the second example of the second embodiment, θa = 90° and sinθa = 1. The first angle θa formed between the first light-blocking surface 241 and the optical axis X' may vary with a distance from the optical axis X'.

[0118] The structures, positions, and connection relationships of the other elements according to the second example of the second embodiment are the same as the elements according to the first example of the second embodiment and will not be described again here. <Dritte Ausführungsform>

[0119] Fig. 3A is a schematic view of an imaging lens assembly 300 according to the first example of the third embodiment of the present disclosure and Fig. 3B is a partially enlarged view of a light-blocking member 330 according to the first example of the third embodiment in Fig. 3A. In Fig. 3A and Fig. 3B, the imaging lens assembly 300 has an optical axis X' and includes a plurality of lens elements 310a, 310b and a light-blocking element 330. The optical axis X' extends through the lens elements 310a, 310b. The lens elements 310a, 310b are arranged in the light-blocking element 330 and along the optical axis X' from an object side of the imaging lens assembly 300 to an image side of the imaging lens assembly 300.

[0120] The light-blocking element 330 is opaque, and the light-blocking element 330 includes a first light-blocking surface 331 and a plurality of protruding structures 332. The first light-blocking surface 331 faces an image side, and the first light-blocking surface 331 is disposed adjacent to the lens element 310a. The protruding structures 332 are arranged on the first light-blocking surface 331 and configured in a two-dimensional array. The protruding structures 332 and the first light-blocking surface 331 are integrally formed. A section of a bottom of each of the protruding structures 332 is circular, and each of the protruding structures 332 protrudes from the bottom in a direction away from the first light-blocking surface 331 such that an arc surface is formed on a tip of each of the protruding structures 332.Moreover, the protruding structures 332 may be further arranged in an array in a direction surrounding the optical axis X'.

[0121] On a section coinciding with the optical axis X', a first angle is formed between the first light-blocking surface 331 and the optical axis X', and the first angle is θa. In the first example of the third embodiment, θa = 65° and sinθa = 0.906. Furthermore, the first angle θa formed between the first light-blocking surface 331 and the optical axis X' may vary with a distance from the optical axis X'.

[0122] The protruding structures 332 are arranged in an array in a direction away from the optical axis X'. On the section coinciding with the optical axis X', the tip of one of the protruding structures 332 closest to the optical axis X' is taken as a reference point B, a distance between the reference point B and the optical axis X' and in a direction perpendicular to the optical axis X' is X, and a distance between the reference point B and the lens element 310a, to which the first light-blocking surface 331 faces, and in a direction parallel to the optical axis X' is Y. In the first example of the third embodiment, X = 2.58 mm, Y = 0.15 mm, and Y / X = 0.06. A height of each of the protruding structures 332 is H, and a height difference between adjacent two of the protruding structures 332 on the section coinciding with the optical axis is ΔH.In the first example of the third embodiment, H = 40 µm, ΔH = 20 µm, and ΔH / H = 0.5. A distance between adjacent two of the protruding structures 332 is greater than the height H of each of the protruding structures 332. <Vierte Ausführungsform>

[0123] Fig. 4A is a schematic view of an electronic device 10 according to the fourth embodiment of the present disclosure and Fig. Fig. 4B is another schematic view of the electronic device 10 according to the fourth embodiment in Fig. 4A. In Fig. 4A and Fig. 4B, the electronic device 10 is a smartphone, and the electronic device 10 includes imaging lens assemblies and a user interface 11. The imaging lens assemblies are an ultra-wide-angle imaging lens assembly 12, a high-resolution imaging lens assembly 13, and a telephoto imaging lens assembly 14, and the user interface 11 is a touchscreen, but the present disclosure is not limited thereto. Specifically, the imaging lens assembly may be the imaging lens assembly according to any of the aforementioned first embodiment to third embodiment, but the present disclosure is not limited thereto.

[0124] A user enters a capture mode via the user interface 11, where the user interface 11 is configured to display an image, and the capture angle can be manually adjusted to switch to different imaging lens arrays. At this time, the imaging light is collected onto an image sensor via the imaging lens array, and an electronic signal representing an image is output to an image signal processor (ISP) 15.

[0125] In Fig. 4B, the electronic device 10 may further include an optical image stabilization mechanism (not shown) to meet a camera specification of the electronic device 10. Furthermore, the electronic device 10 may further include at least one focus assist module (not shown) and at least one sensing element (not shown). The focus assist module may be a flash module (not shown) for compensating color temperature, an infrared ranging component, a laser focus module, and so on. The sensing element may include physical momentum and kinetic energy sensing functions, such as an accelerator, a gyroscope, or a Hall effect element, to detect vibrations or image instabilities applied by the user's hands or external environments.Accordingly, the imaging lens assembly of the electronic device 10 equipped with an autofocus mechanism and the optical image stabilization mechanism can be improved to achieve better image quality. Furthermore, the electronic device 10 according to the present disclosure can have a multi-mode shooting function, such as taking optimized selfies, HDR (High Dynamic Range) shooting in low-light conditions, recording in 4K resolution, and so on. Furthermore, the user can visually view an image captured by the camera via the user interface 11 and manually operate the image browsing area on the user interface 11 to achieve the "what you see is what you get" autofocus function.

[0126] Furthermore, the imaging lens assembly, the optical image stabilization mechanism, the detection element, and the focus assist module can be arranged on a flexible printed circuit board (FPC) (not shown) and electrically connected to the image signal processor 15 and other related components via a connector (not shown) to perform a capturing process. Since current electronic devices, such as smartphones, tend to be compact, firstly, arranging the camera module and related components on the flexible printed circuit board and secondly integrating their circuitry into the main board of the electronic device via the connector can meet the mechanical design and circuit layout requirements of the limited space within the electronic device and obtain more flexibility.The autofocus function of the imaging lens assembly can also be controlled more flexibly via the touchscreen of the electronic device. According to the fourth embodiment, the electronic device 10 may include a plurality of sensing elements and a plurality of focus assist modules. The sensing elements and the focus assist modules are arranged on the flexible printed circuit board and at least one other flexible printed circuit board (not shown) and are electrically connected to the image signal processor 15 and other associated components via corresponding connectors to perform the imaging process. In other embodiments (not shown), the sensing elements and the focus assist modules may also be arranged on the main board of the electronic device or on other types of carrier boards, depending on mechanical design and circuit layout requirements.

[0127] Furthermore, the electronic device 10 may further include, but is not limited to, a display, a control unit, a storage unit, a random access memory (RAM), a read-only memory (ROM), or the combination thereof.

[0128] Fig. Fig. 4C is a schematic view of an image transmitted via the electronic device 10 according to the fourth embodiment in Fig. 4A was recorded. In Fig. 4C, the larger area of ​​the image can be captured via the ultra-wide-angle imaging lens array 12, and the ultra-wide-angle imaging lens array 12 has the function of capturing a larger area of ​​the scene.

[0129] Fig. Fig. 4D is a schematic view of another image transmitted via the electronic device 10 according to the fourth embodiment in Fig. 4A was recorded. In Fig. 4D, the image of the specific area can be captured with the high resolution via the high-resolution imaging lens array 13, and the high-resolution imaging lens array 13 has the function of high resolution and low deformation.

[0130] Fig. Fig. 4E is a schematic view of another image transmitted via the electronic device 10 according to the fourth embodiment in Fig. 4A was recorded. In Fig. 4E, the telephoto lens imaging lens assembly 14 has the magnification function of high magnification, and the distant image can be captured and magnified at high magnification via the telephoto lens imaging lens assembly 14.

[0131] In Fig. 4C to 4E, the zoom function can be obtained via the electronic device 10 when the scene is captured via the imaging lens array with different focal lengths in cooperation with the image processing function. <Fünfte Ausführungsform>

[0132] Fig. 5 is a schematic view of an electronic device 20 according to the fifth embodiment of the present disclosure. In Fig. 5, the electronic device 20 is a smartphone that includes imaging lens assemblies. Furthermore, the imaging lens assemblies are ultra-wide-angle imaging lens assemblies 21, wide-angle imaging lens assemblies 22, telephoto imaging lens assemblies 23, 24, and a time-of-flight (TOF) module 26. The TOF module 26 may be another type of imaging lens assembly, and the assembly is not limited thereto. Specifically, the imaging lens assembly may be the imaging lens assembly according to any of the aforementioned first embodiment to third embodiment, but the present disclosure is not limited thereto.

[0133] Furthermore, the telephoto imaging lens assemblies 24 are configured to fold the light, but the present disclosure is not so limited.

[0134] To meet a specification of the camera module of the electronic device 20, the electronic device 20 may further include an optical image stabilization mechanism (not shown). Furthermore, the electronic device 20 may include at least one focus assist module (not shown) and at least one sensing element (not shown). The focus assist module may be a flash module 25 for compensating color temperature, an infrared ranging component, a laser focus module, and so on. The sensing element may have functions for sensing physical momentum and kinetic energy, such as an accelerator, a gyroscope, or a Hall effect element to detect vibrations or image instabilities applied by the user's hands or external environments.Accordingly, the imaging lens assembly of the electronic device 20 equipped with an autofocus mechanism and the optical image stabilization mechanism can be improved to achieve better image quality. Furthermore, the electronic device 20 according to the present disclosure can have a multi-mode shooting function, such as capturing optimized selfies, capturing HDR (High Dynamic Range) images in low-light conditions, recording in 4K resolution, and so on.

[0135] Furthermore, all other component structures and arrangements according to the fifth embodiment are the same as the component structures and arrangements according to the fourth embodiment and will not be described again here. <Sechste Ausführungsform>

[0136] Fig. 6A is a schematic view of a vehicle instrument 30 according to the sixth embodiment of the present disclosure, Fig. Fig. 6B is another schematic view of the vehicle instrument 30 according to the sixth embodiment in Fig. 6A and Fig. Fig. 6C is another schematic view of the vehicle instrument 30 according to the sixth embodiment in Fig. 6A. In Fig. 6A to Fig. 6C, an electronic device (not shown) is mounted on the vehicle instrument 30, and the electronic device includes imaging lens arrays 31. In the sixth embodiment, a number of the imaging lens arrays 31 is six, the imaging lens arrays 31 are vehicle imaging lens arrays, and the structures of the imaging lens array may be the imaging lens array according to any one of the aforementioned first embodiment to third embodiment, but the present disclosure is not limited thereto.

[0137] In Fig. 6A to Fig. 6C, two of the imaging lens assemblies 31 are arranged under a left rearview mirror and a right rearview mirror, respectively, to capture the image information at a viewing angle θ. Specifically, the viewing angle θ can satisfy the following condition: 40 degrees < θ < 90 degrees. Therefore, the image information can be captured within a left lane and a right lane.

[0138] In the Fig.6A to 6C, two more of the imaging lens assemblies 31 may be arranged in an interior of the vehicle instrument 30. Therefore, it is convenient for the driver to obtain the information about the exterior space, such as the exterior space information I1, I2, I3, I4, but the present disclosure is not limited thereto. Specifically, the other two of the imaging lens assemblies 31 are arranged near a rearview mirror and near a rear window in the vehicle instrument 30, respectively. Furthermore, the imaging lens assemblies 31 may be arranged on the non-reflective surfaces of the left rearview mirror and the right rearview mirror, respectively, but the present disclosure is not limited thereto.

[0139] The other two imaging lens assemblies 31 can be arranged at a front end and a rear end of the vehicle instrument 30, respectively, and are arranged below the left rearview mirror and the right rearview mirror. Therefore, wider viewing angles can be provided to reduce the blind spot, thus improving driving safety. Furthermore, by arranging the imaging lens assemblies 31 around the vehicle instrument 30, it is helpful to recognize traffic information from the vehicle instrument 30, which is beneficial for performing an autopilot driving function.

Claims

[1] An imaging lens assembly (100) having an optical axis (X') and comprising: a lens element (110b), wherein the optical axis (X') passes through the lens element (110b); a reflective element (120) arranged on an object side or an image side of the lens element (110b), and comprising: a first reflective surface (121) configured to fold the optical axis (X'); and a light-blocking element (130), wherein the light-blocking element (130) is opaque, the light-blocking element (130) is arranged corresponding to the lens element (110b) or the reflective element (120), and the light-blocking element (130) comprises: a first light-blocking surface (131) disposed between the lens element (110b) and the reflective element (120); and a plurality of protruding structures (132) arranged on the first light-blocking surface (131) and arranged in a two-dimensional array, wherein the protruding structures (132) and the first light-blocking surface (131) are formed integrally, a section of a bottom of each of the protruding structures (132) is circular, and each of the protruding structures (132) protrudes from the bottom in a direction away from the first light-blocking surface (131) such that an arc surface is formed on a tip of each of the protruding structures (132); wherein, on a section coinciding with the optical axis (X'), a first angle (θa2) is formed between the first light-blocking surface (131) and the optical axis (X'), the first angle (θa2) is θa and the following condition is satisfied: 0.86 <sinθ≤1. [2] The imaging lens assembly (100) of claim 1, wherein the first angle (θa1) is θa and the following condition is satisfied: 0.96 <sinθa≤1. [3] The imaging lens assembly (100) of claim 1, wherein the first angle (θa2) formed between the first light-blocking surface (131) and the optical axis (X') changes with a distance from the optical axis (X'). [4] The imaging lens assembly (100) according to claim 3, wherein the first light-blocking surface (131) faces the reflective element (120), the first light-blocking surface (131) includes a rearwardly inclined portion (133), and the rearwardly inclined portion (133) gradually moves away from the reflective element (120) in a direction away from the optical axis (X'). [5] The imaging lens assembly (100) according to claim 4, wherein the first angle (θa2) is formed between the rearwardly inclined portion (133) and the optical axis (X'), the first angle (θa2) is θa, and the following condition is satisfied: −0.5≤cosθa<0. [6] The imaging lens assembly (100) of claim 1, wherein the protruding structures (132) are arranged in an array in a direction away from the optical axis (X'); wherein, on the section coinciding with the optical axis (X'), the tip of one of the protruding structures (132) closest to the optical axis (X') is taken as a reference point (B), a distance between the reference point (B) and the optical axis (X') and in a direction perpendicular to the optical axis (X') is X, a distance between the reference point (B) and the reflective element (120) or between the reference point (B) and the lens element (110b) facing the first light-blocking surface (131) and in a direction parallel to the optical axis (X') is Y, and the following condition is satisfied: 0.03 <Y / X<0,76. [7] The imaging lens assembly (100) of claim 6, wherein the protruding structures (132) are further arranged in an array in a direction surrounding the optical axis (X'). [8] The imaging lens assembly (100) of claim 1, wherein a height (H) of each of the protruding structures (132) is H and the following condition is satisfied: 6 μm <H<102 μm. [9] The imaging lens assembly (100) according to claim 8, wherein the height (H) of each of the protruding structures (132) is H, a height difference (ΔH) between adjacent two of the protruding structures (132) on the section coinciding with the optical axis (X') is ΔH, and the following condition is satisfied: 0.05<ΔH / H<0.

55. [10] The imaging lens assembly (100) of claim 9, wherein the height difference (ΔH) between adjacent two of the protruding structures (132) on the section coinciding with the optical axis (X') is ΔH and the following condition is satisfied: 1.5 μm<ΔH<29 μm. [11] The imaging lens assembly (100) of claim 8, wherein a distance between adjacent two of the protruding structures (132) is greater than the height (H) of each of the protruding structures (132). [12] The imaging lens assembly (100) of claim 1, wherein the light-blocking element (130) further comprises: a second light-blocking surface (135), wherein the second light-blocking surface (135) comprises a plurality of stripe structures (137), the stripe structures (137) are arranged in an array in a direction surrounding the optical axis (X'), and a cross section of each of the stripe structures (137) is triangular. [13] The imaging lens assembly (100) according to claim 12, wherein, on the section coinciding with the optical axis (X'), a second angle (θb1) is formed between the second light-blocking surface (135) and the optical axis (X'), the second angle (θb1) is θa, and the following condition is satisfied: 0.5 <cosθb<1. [14] The imaging lens assembly (100) of claim 1, wherein the reflective element (120) further comprises: a second reflective surface (122) configured to refold the optical axis (X'). [15] The imaging lens assembly (100) of claim 14, wherein the reflective element (120) further comprises: an incident surface, wherein the optical axis (X') enters the reflective element (120) through the incident surface; and an exit surface, wherein the optical axis (X') exits the reflective element (120) through the exit surface; where the incident surface and the exit surface are the same surface. [16] The imaging lens assembly (100) of claim 1, wherein a number of said lens elements (110a, 110, 110b) is at least two and a distance between said at least two lens elements (110a, 110, 110b) is variable. [17] An imaging lens assembly (100) having an optical axis (X') and comprising: a lens element (110b), wherein the optical axis (X') passes through the lens element (110b); a reflective element (120) arranged on an object side or an image side of the lens element (110b), and comprising: a first reflective surface (121) configured to fold the optical axis (X'); and a light-blocking element (130), wherein the light-blocking element (130) is opaque, the light-blocking element (130) is arranged corresponding to the lens element (110b) or the reflective element (120), and the light-blocking element (130) comprises: a first light-blocking surface (131) disposed between the lens element (110b) and the reflective element (120); and a plurality of protruding structures (132) arranged on the first light-blocking surface (131) and arranged in a two-dimensional array, wherein the protruding structures (132) and the first light-blocking surface (131) are integrally formed and each of the protruding structures (132) protrudes from a bottom in a direction away from the first light-blocking surface (131); wherein, on a section coinciding with the optical axis (X'), a first angle (θa2) is formed between the first light-blocking surface (131) and the optical axis (X'), the first angle (θa2) is θa and the following condition is satisfied: 0.86 <sinθa≤1. [18] Imaging lens assembly (100) according to claim 17, wherein the first angle (θa1) is θa and the following condition is satisfied: 0.96 <sinθa≤1. [19] The imaging lens assembly (100) of claim 17, wherein the first angle (θa2) formed between the first light-blocking surface (131) and the optical axis (X') changes with a distance from the optical axis (X'). [20] The imaging lens assembly (100) of claim 19, wherein the first light-blocking surface (131) faces the reflective element (120), the first light-blocking surface (131) includes a rearwardly inclined portion (133), and the rearwardly inclined portion (133) gradually moves away from the reflective element (120) in a direction away from the optical axis (X'). [21] The imaging lens assembly (100) according to claim 20, wherein the first angle (θa2) is formed between the rearwardly inclined portion (133) and the optical axis (X'), the first angle (θa2) is θa, and the following condition is satisfied: −0.5≤cosθa<0. [22] The imaging lens assembly (100) according to claim 17, wherein the protruding structures (132) are arranged in an array in a direction away from the optical axis (X'); wherein, on the section coinciding with the optical axis (X'), a tip of one of the protruding structures (132) closest to the optical axis (X') is taken as a reference point (B), a distance between the reference point (B) and the optical axis (X') and in a direction perpendicular to the optical axis (X') is X, a distance between the reference point (B) and the reflective element (120) or between the reference point (B) and the lens element (110b) facing the first light-blocking surface (131) and in a direction parallel to the optical axis (X') is Y, and the following condition is satisfied: 0.03 <Y / X<0,76. [23] The imaging lens assembly (100) of claim 22, wherein the protruding structures (132) are further arranged in an array in a direction surrounding the optical axis (X'). [24] The imaging lens assembly (100) of claim 17, wherein a height (H) of each of the protruding structures (132) is H and the following condition is met: 6 μm <H<102 μm [25] The imaging lens assembly (100) according to claim 24, wherein the height (H) of each of the protruding structures (132) is H, a height difference (ΔH) between adjacent two of the protruding structures (132) on the section coinciding with the optical axis (X') is ΔH, and the following condition is satisfied: 0.05<ΔH / H<0.

55. [26] The imaging lens assembly (100) of claim 25, wherein the height difference (ΔH) between adjacent two of the protruding structures (132) on the section coinciding with the optical axis (X') is ΔH and the following condition is satisfied: 1.5 μm<ΔH<29 μm. [27] The imaging lens assembly (100) of claim 24, wherein a distance between adjacent two of the protruding structures (132) is greater than the height (H) of each of the protruding structures (132). [28] The imaging lens assembly (100) of claim 17, wherein the light-blocking element (130) further comprises: a second light-blocking surface (135), wherein the second light-blocking surface (135) comprises a plurality of stripe structures (137), the stripe structures (137) are arranged in an array in a direction surrounding the optical axis (X'), and a cross section of each of the stripe structures (137) is triangular. [29] The imaging lens assembly (100) according to claim 28, wherein, on the section coinciding with the optical axis (X'), a second angle (θb1) is formed between the second light-blocking surface (135) and the optical axis (X'), the second angle (θb1) is θa, and the following condition is satisfied: 0.5 <cosθb<1. [30] The imaging lens assembly (100) of claim 17, wherein the reflective element (120) further comprises: a second reflective surface (122) configured to refold the optical axis (X'). [31] The imaging lens assembly (100) of claim 30, wherein the reflective element (120) further comprises: an incident surface, wherein the optical axis (X') enters the reflective element (120) through the incident surface; and an exit surface, wherein the optical axis (X') exits the reflective element (120) through the exit surface; where the incident surface and the exit surface are the same surface. [32] An imaging lens assembly (100) having an optical axis (X') and comprising: an optical element (120), wherein the optical element (120) is transparent to light and the optical axis (X') passes through the optical element (120); an image sensor (150) configured to detect light and arranged corresponding to the optical element (120); and a light-blocking element (160), wherein the light-blocking element (160) is opaque, the light-blocking element (160) is arranged corresponding to the optical element (120) or the image sensor (150), and the light-blocking element (160) comprises: a first light-blocking surface (161) disposed between the optical element (120) and the image sensor (150); and a plurality of protruding structures (162) arranged on the first light-blocking surface (161) and arranged in a two-dimensional array, wherein the protruding structures (162) and the first light-blocking surface (161) are formed integrally, a section of a bottom of each of the protruding structures (162) is circular, and each of the protruding structures (162) protrudes from the bottom in a direction away from the first light-blocking surface (161) such that an arc surface is formed on a tip of each of the protruding structures (162); wherein, on a section coinciding with the optical axis (X'), a first angle (θa) is formed between the first light-blocking surface (161) and the optical axis (X'), the first angle (θa2) is θa and the following condition is satisfied: 0.86 <sinθa≤1. [33] Imaging lens assembly (100) according to claim 32, wherein the first angle (θa) is θa and the following condition is met: 0.96 <sinθa≤1. [34] The imaging lens assembly (100) of claim 32, wherein the first angle (θa2) formed between the first light-blocking surface (131) and the optical axis (X') changes with a distance from the optical axis (X'). [35] The imaging lens assembly (100) of claim 34, wherein the first light-blocking surface (131) faces the optical element (120), the first light-blocking surface (131) includes a rearwardly inclined portion (133), and the rearwardly inclined portion (133) gradually moves away from the optical element (120) in a direction away from the optical axis (X'). [36] The imaging lens assembly (100) according to claim 35, wherein the first angle (θa2) is formed between the rearwardly inclined portion (133) and the optical axis (X'), the first angle (θa2) is θa, and the following condition is satisfied: −0.5≤cosθa<0. [37] The imaging lens assembly (100) according to claim 32, wherein the protruding structures (162) are arranged in an array in a direction away from the optical axis (X'); wherein, on the section coinciding with the optical axis (X'), the tip of one of the protruding structures (162) closest to the optical axis (X') is taken as a reference point (B), a distance between the reference point (B) and the optical axis (X') and in a direction perpendicular to the optical axis (X') is X, a distance between the reference point (B) and the optical element (120) facing the first light-blocking surface (161) and in a direction parallel to the optical axis (X') is Y2, and the following condition is satisfied: 0.03 <Y2 / X<0,76. [38] The imaging lens assembly (100) of claim 37, wherein the protruding structures (132) are further arranged in an array in a direction surrounding the optical axis (X'). [39] The imaging lens assembly (100) of claim 32, wherein a height (H) of each of the protruding structures (132) is H and the following condition is met: 6 μm <H<102 μm. [40] The imaging lens assembly (100) according to claim 39, wherein the height (H) of each of the protruding structures (132) is H, a height difference (ΔH) between adjacent two of the protruding structures (132) on the section coinciding with the optical axis (X') is ΔH, and the following condition is satisfied: 0.05<ΔH / H<0.

55. [41] The imaging lens assembly (100) of claim 39, wherein a distance between adjacent two of the protruding structures (132) is greater than the height (H) of each of the protruding structures (132). [42] The imaging lens assembly (100) of claim 32, wherein the light-blocking element (130) further comprises: a second light-blocking surface (135), wherein the second light-blocking surface (135) comprises a plurality of stripe structures (137), the stripe structures (137) are arranged in an array in a direction surrounding the optical axis (X'), and a cross section of each of the stripe structures (137) is triangular. [43] The imaging lens assembly (100) according to claim 42, wherein, on the section coinciding with the optical axis (X'), a second angle (θb1) is formed between the second light-blocking surface (135) and the optical axis (X'), the second angle (θb1) is θa, and the following condition is satisfied: 0.5 <cosθb<1. [44] An imaging lens assembly (300) having an optical axis (X') and comprising: a lens element (310a), wherein the optical axis (X') passes through the lens element (310a); a light-blocking element (330), wherein the light-blocking element (330) is opaque, the light-blocking element (330) is arranged corresponding to the lens element (310b), and the light-blocking element (330) comprises: a first light-blocking surface (331) facing an image side and disposed adjacent to the lens element (310a); and a plurality of protruding structures (332) arranged on the first light-blocking surface (331) and arranged in a two-dimensional array, wherein the protruding structures (332) and the first light-blocking surface (331) are formed integrally, a section of a bottom of each of the protruding structures (332) is circular, and each of the protruding structures (332) protrudes from the bottom in a direction away from the first light-blocking surface (331) such that an arc surface is formed on a tip of each of the protruding structures (332); wherein, on a section coinciding with the optical axis (X'), a first angle (θa) is formed between the first light-blocking surface (331) and the optical axis (X'), the first angle (θa2) is θa and the following condition is satisfied: 0.86 <sinθa≤1. [45] Imaging lens assembly (100) according to claim 44, wherein the first angle (θa1) is θa and the following condition is met: 0.96 <sinθa≤1. [46] The imaging lens assembly (100) of claim 44, wherein the first angle (θa2) formed between the first light-blocking surface (131) and the optical axis (X') changes with a distance from the optical axis (X'). [47] The imaging lens assembly (300) of claim 46, wherein the first light-blocking surface (331) faces the lens element (310a), the first light-blocking surface (331) includes a rearwardly inclined portion, and the rearwardly inclined portion gradually moves away from the lens element (310a) in a direction away from the optical axis (X'). [48] ​​The imaging lens assembly (100) according to claim 47, wherein the first angle (θa2) is formed between the rearwardly inclined portion (133) and the optical axis (X'), the first angle (θa2) is θa, and the following condition is satisfied: −0.5≤cosθa<0. [49] The imaging lens assembly (300) according to claim 44, wherein the protruding structures (332) are arranged in an array in a direction away from the optical axis (X'); wherein, on the section coinciding with the optical axis (X'), the tip of one of the protruding structures (332) closest to the optical axis (X') is taken as a reference point (B), a distance between the reference point (B) and the optical axis (X') and in a direction perpendicular to the optical axis (X') is X, a distance between the reference point (B) and the lens element (310a) facing the first light-blocking surface (331) and in a direction parallel to the optical axis (X') is Y, and the following condition is satisfied: 0.03 <Y / X<0,76. [50] The imaging lens assembly (300) of claim 49, wherein the protruding structures (332) are further arranged in an array in a direction surrounding the optical axis (X'). [51] The imaging lens assembly (300) of claim 44, wherein a height (H) of each of the protruding structures (332) is H and the following condition is met: 6 μm <H<102 μm. [52] The imaging lens assembly (300) of claim 51, wherein the height (H) of each of the protruding structures (332) is H, a height difference (ΔH) between adjacent two of the protruding structures (332) on the section coinciding with the optical axis (X') is ΔH, and the following condition is satisfied: 0.05<ΔH / H<0.

55. [53] The imaging lens assembly (300) of claim 52, wherein the height difference (ΔH) between adjacent two of the protruding structures (332) on the section coinciding with the optical axis (X') is ΔH and the following condition is satisfied: 1.5 μm<ΔH<29 μm. [54] The imaging lens assembly (300) of claim 51, wherein a distance between adjacent two of the protruding structures (332) is greater than the height (H) of each of the protruding structures (332). [55] The imaging lens assembly (100) of claim 44, wherein the light-blocking element (130) further comprises: a second light-blocking surface (135), wherein the second light-blocking surface (135) comprises a plurality of stripe structures (137), the stripe structures (137) are arranged in an array in a direction surrounding the optical axis (X'), and a cross section of each of the stripe structures (137) is triangular. [56] The imaging lens assembly (100) according to claim 55, wherein, on the section coinciding with the optical axis (X'), a second angle (θb1) is formed between the second light-blocking surface (135) and the optical axis (X'), the second angle (θb1) is θa, and the following condition is satisfied: 0.5 <cosθb<1. [57] Electronic device (10) comprising: the imaging lens assembly (100) of claim 1. [58] Electronic device (10) comprising: the imaging lens assembly (100) of claim 17. [59] Electronic device (10) comprising: the imaging lens assembly (100) of claim 32. [60] Electronic device (10) comprising: the imaging lens assembly (300) of claim 44.

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