Imaging lens, imaging lens module and electronic device

Abstract

The invention discloses an imaging lens, an imaging lens module and an electronic device. The imaging lens comprises a plurality of lens elements, a light path turning element and a sheet-shaped shading element. The lens element defines an optical axis. The light path turning element is used for turning the optical axis, the light path turning element comprises an optical surface, and imaging light of the imaging lens is totally reflected at least once on the optical surface. The sheet-shaped shading element and the light path turning element are correspondingly arranged, and the sheet-shaped shading element comprises a first surface, a second surface and a microstructure layer. The first surface is disposed facing the optical surface. The second surface is opposite to the first surface. The microstructure layer is at least arranged on the first surface, and the microstructure layer enables protrusions to be formed on the first surface. An air gap is formed in at least part of the area between the microstructure layer and the optical surface. Therefore, stray light can be blocked to avoid stray light reflection.

Description

Technical Field

[0001] The present disclosure relates to an imaging lens and an imaging lens module, and more particularly to an imaging lens and an imaging lens module applied to a portable electronic device. Background Art

[0002] In recent years, portable electronic devices have developed rapidly, such as smart electronic devices and tablet computers, which have become part of modern people's lives. Imaging lens modules and imaging lenses installed on portable electronic devices have also developed rapidly. However, as technology becomes more and more advanced, users have higher and higher requirements for the quality of imaging lenses. Therefore, developing an imaging lens that can block stray light has become an important and urgent problem in the industry. Summary of the invention

[0003] The present disclosure provides an imaging lens, an imaging lens module and an electronic device, which help block stray light by combining an air gap with specific surface properties to prevent the stray light from reflecting back to an optical path turning element or an optical element.

[0004] According to one embodiment of the present disclosure, an imaging lens is provided, comprising a plurality of lens elements, an optical path turning element, and a sheet-like shading element. The lens element defines an optical axis. The optical path turning element is used to turn the optical axis, and the optical path turning element comprises an optical surface, wherein the imaging light of the imaging lens undergoes at least one total reflection on the optical surface. The sheet-like shading element is disposed corresponding to the optical path turning element, and the sheet-like shading element comprises a first surface, a second surface, and a microstructure layer. The first surface is disposed facing the optical surface. The second surface is disposed relative to the first surface. The microstructure layer is disposed at least on the first surface, and the microstructure layer forms a protrusion on the first surface. At least a portion of the area between the microstructure layer and the optical surface has an air gap. The surface of the microstructure layer is measured according to the ISO25178 standard, and the number of peaks per square millimeter of the microstructure layer is Ypd; the surface of the microstructure layer is measured according to the ISO25178 standard to obtain an equivalent straight line and a load area ratio curve, 0% to 100% of the equivalent straight line corresponds to the load area ratio curve to define a core height, and the portion of the load area ratio curve higher than the core height is a protruding peak portion, and the load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1, which satisfies the following conditions: 20000 (1 / mm 2 )≤Ypd≤110000(1 / mm 2 ); and 17%≤Ymr1≤45%.

[0005] According to the imaging lens of the embodiment described in the previous paragraph, the surface of the microstructure layer is measured according to the ISO25178 standard. The load area ratio separating the core part and the protruding peak part in the load area ratio curve is Ymr1, which can meet the following conditions: 17%≤Ymr1≤25%.

[0006] According to the imaging lens of the embodiment described in the preceding paragraph, the average height of the protruding peak portion is Aph, which can satisfy the following conditions: 2.0 μm ≤ Aph ≤ 40.1 μm. In addition, it can satisfy the following conditions: 2.0 μm ≤ Aph ≤ 21.2 μm. In addition, it can satisfy the following conditions: 5.4 μm ≤ Aph ≤ 19.2 μm. In addition, it can satisfy the following conditions: 7.3 μm ≤ Aph ≤ 14.5 μm.

[0007] According to the imaging lens of the embodiment described in the previous paragraph, the surface of the microstructure layer is measured according to the ISO25178 standard, and the number of peaks of the microstructure layer that are greater than the height of the core and greater than 4 μm is Hpq, which can meet the following conditions: 2≤Hpq≤400. In addition, it can meet the following conditions: 40≤Hpq≤210.

[0008] According to the imaging lens of the embodiment described in the previous paragraph, the height of the air gap is Ha, which can meet the following conditions: 1 μm <Ha<102μm。

[0009] The imaging lens according to the embodiment described in the previous paragraph may further include an adhesive element, wherein the adhesive element is disposed on at least one of the first surface and the second surface, and the adhesive element forms an air gap in at least a portion of the area between the microstructure layer and the optical surface.

[0010] According to the imaging lens of the embodiment described in the preceding paragraph, the thickness of the sheet-shaped light shielding element is TL, which can meet the following conditions: 10 μm <TL<170μm。

[0011] According to the imaging lens of the embodiment described in the preceding paragraph, the thickness of the adhesive element is TA, which can satisfy the following conditions: 3 μm <TA<105μm。

[0012] According to the imaging lens of the embodiment described in the previous paragraph, the thickness difference of the adhesive element as a whole may be less than 10 μm.

[0013] According to the imaging lens of the embodiment described in the previous paragraph, the sheet-shaped shading element may further include a nanostructure layer. The nanostructure layer is disposed on the surface of the microstructure layer, and the nanostructure layer may include a plurality of nanoparticles, wherein the nanoparticles are stacked and the number of the nanoparticles decreases in a direction away from the sheet-shaped shading element.

[0014] According to an embodiment of the present disclosure, an imaging lens is provided, comprising a plurality of lens elements, an optical path turning element and a sheet-like shading element. The lens element defines an optical axis. The optical path turning element is used to turn the optical axis, and the optical path turning element comprises an optical surface, wherein the imaging light of the imaging lens undergoes at least one total reflection on the optical surface. The sheet-like shading element is arranged corresponding to the optical path turning element, and the sheet-like shading element comprises a first surface, a second surface and a microstructure layer. The first surface is arranged facing the optical surface. The second surface is arranged relative to the first surface. The microstructure layer is at least arranged on the first surface, and the microstructure layer forms a protrusion on the first surface. At least a portion of the area between the microstructure layer and the optical surface has an air gap. A surface of the microstructure layer is measured according to the ISO25178 standard, and the number of wave peaks per square millimeter of the microstructure layer is Ypd, which satisfies the following conditions: 20000 (1 / mm 2 )≤Ypd≤110000(1 / mm 2 ). The surface of the microstructure layer is measured according to the ISO25178 standard to obtain an equivalent straight line and a load area ratio curve, 0% to 100% of the equivalent straight line corresponds to the load area ratio curve to define a core height, the portion of the load area ratio curve higher than the core height is a protruding peak portion, and the average height of the protruding peak portion is Aph; the surface of the microstructure layer is measured according to the ISO25178 standard, the number of peak vertices of the microstructure layer greater than the core height and greater than 4μm is Hpq, and at least one of the following conditions is satisfied: 2.0μm≤Aph≤40.1μm; 2≤Hpq≤400.

[0015] According to the imaging lens of the embodiment described in the previous paragraph, the average height of the protruding peak portion is Aph, which can satisfy the following condition: 2.0 μm≤Aph≤21.2 μm.

[0016] According to the imaging lens of the embodiment described in the preceding paragraph, the surface of the microstructure layer is measured according to the ISO25178 standard, the number of peaks of the microstructure layer that are greater than the core and greater than 4 μm is Hpq; the average height of the protruding peaks is Aph, and at least one of the following conditions is satisfied: 2≤Hpq≤400; 5.4μm≤Aph≤19.2μm. In addition, at least one of the following conditions is satisfied: 5.4μm≤Aph≤19.2μm; 40≤Hpq≤210.

[0017] According to the imaging lens of the embodiment described in the preceding paragraph, the surface of the microstructure layer is measured according to the ISO25178 standard, and the load area ratio of the core part and the protruding peak part in the load area ratio curve is Ymr1, which can meet the following conditions: 17%≤Ymr1≤30%. The number of peaks of the microstructure layer that are greater than the core part and greater than 4μm is Hpq; the average height of the protruding peak part is Aph, and at least one of the following conditions is met: 40≤Hpq≤210; 7.3μm≤Aph≤14.5μm.

[0018] In the imaging lens according to the embodiment described in the preceding paragraph, the load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1; the average height of the protruding peak portion is Aph; the number of peak vertices of the microstructure layer that is greater than the height of the core portion and greater than 4 μm is Hpq, which simultaneously satisfies the following conditions: 17%≤Ymr1≤25%; 7.3 μm≤Aph≤14.5 μm; and 40≤Hpq≤210.

[0019] According to the imaging lens of the embodiment described in the previous paragraph, the height of the air gap is Ha, which can meet the following conditions: 1 μm <Ha<102μm。

[0020] The imaging lens according to the embodiment described in the previous paragraph may further include an adhesive element, wherein the adhesive element is disposed on at least one of the first surface and the second surface, and the adhesive element forms an air gap in at least a portion of the area between the microstructure layer and the optical surface.

[0021] According to the imaging lens of the embodiment described in the preceding paragraph, the thickness of the sheet-shaped light shielding element is TL, which can meet the following conditions: 10 μm <TL<170μm。

[0022] According to the imaging lens of the embodiment described in the preceding paragraph, the thickness of the adhesive element is TA, which can satisfy the following conditions: 3 μm <TA<105μm。

[0023] According to the imaging lens of the embodiment described in the previous paragraph, the thickness difference of the adhesive element as a whole may be less than 10 μm.

[0024] According to the imaging lens of the embodiment described in the previous paragraph, the sheet-shaped shading element may further include a nanostructure layer. The nanostructure layer is disposed on the surface of the microstructure layer, and the nanostructure layer may include a plurality of nanoparticles, wherein the nanoparticles are stacked and the number of the nanoparticles decreases in a direction away from the sheet-shaped shading element.

[0025] According to an embodiment of the present disclosure, an imaging lens is provided, comprising an optical element and a sheet-shaped shading element. The sheet-shaped shading element is arranged corresponding to the optical element, and the sheet-shaped shading element comprises a first surface, a second surface and a microstructure layer. The first surface is arranged facing the optical element. The second surface is arranged relative to the first surface. The microstructure layer is at least arranged on the first surface, and the microstructure layer forms a protrusion on the first surface. At least a part of the area between the microstructure layer and the optical element has an air gap. A surface of the microstructure layer is measured according to the ISO25178 standard, and the number of peak vertices per square millimeter of the microstructure layer is Ypd; the surface of the microstructure layer is measured according to the ISO25178 standard to obtain an equivalent straight line and a load area ratio curve, 0% to 100% of the equivalent straight line corresponds to the load area ratio curve to define a core height, the portion of the load area ratio curve higher than the core height is a protruding peak portion, and the load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1, which satisfies the following conditions: 20000 (1 / mm 2 )≤Ypd≤110000(1 / mm 2 ); and 17%≤Ymr1≤45%.

[0026] According to the imaging lens of the embodiment described in the previous paragraph, the surface of the microstructure layer is measured according to the ISO25178 standard, and the load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1, which can meet the following conditions: 17%≤Ymr1≤25%.

[0027] According to the imaging lens of the embodiment described in the preceding paragraph, the average height of the protruding peaks is Aph, which can satisfy the following conditions: 2.0 μm ≤ Aph ≤ 21.2 μm. In addition, it can satisfy the following conditions: 5.4 μm ≤ Aph ≤ 19.2 μm. In addition, it can satisfy the following conditions: 7.3 μm ≤ Aph ≤ 14.5 μm.

[0028] According to the imaging lens of the embodiment described in the previous paragraph, the surface of the microstructure layer is measured according to the ISO25178 standard, and the number of peaks of the microstructure layer that are greater than the height of the core and greater than 4 μm is Hpq, which can meet the following conditions: 2≤Hpq≤400. In addition, it can meet the following conditions: 40≤Hpq≤210.

[0029] According to the imaging lens of the embodiment described in the previous paragraph, the height of the air gap is Ha, which can meet the following conditions: 1 μm <Ha<102μm。

[0030] The imaging lens according to the embodiment described in the previous paragraph may further include an adhesive element, wherein the adhesive element is disposed on at least one of the first surface and the second surface, and the adhesive element forms an air gap in at least a portion of the area between the microstructure layer and the optical element.

[0031] According to the imaging lens of the embodiment described in the preceding paragraph, the thickness of the sheet-shaped light shielding element is TL, which can meet the following conditions: 10 μm <TL<170μm。

[0032] According to the imaging lens of the embodiment described in the preceding paragraph, the thickness of the adhesive element is TA, which can satisfy the following conditions: 3 μm <TA<105μm。

[0033] According to the imaging lens of the embodiment described in the previous paragraph, the thickness difference of the adhesive element as a whole may be less than 10 μm.

[0034] According to the imaging lens of the embodiment described in the previous paragraph, the first surface may include a planar portion, the planar portion is smoother than other areas of the first surface, and the planar portion is in physical contact with the optical element.

[0035] According to the imaging lens of the embodiment described in the previous paragraph, the sheet-shaped shading element may further include a nanostructure layer. The nanostructure layer is disposed on the surface of the microstructure layer, and the nanostructure layer may include a plurality of nanoparticles, wherein the nanoparticles are stacked and the number of the nanoparticles decreases in a direction away from the sheet-shaped shading element.

[0036] According to an embodiment of the present disclosure, an imaging lens is provided, comprising an optical element and a sheet-like shading element. The sheet-like shading element is arranged corresponding to the optical element, and the sheet-like shading element comprises a first surface, a second surface and a microstructure layer. The first surface is arranged facing the optical element. The second surface is arranged relative to the first surface. The microstructure layer is at least arranged on the first surface, and the microstructure layer forms a protrusion on the first surface. At least a portion of the area between the microstructure layer and the optical element has an air gap. A surface of the microstructure layer is measured according to the ISO25178 standard, and the number of peak vertices per square millimeter of the microstructure layer is Ypd, which satisfies the following conditions: 20000 (1 / mm 2 )≤Ypd≤110000(1 / mm 2 ). The surface of the microstructure layer is measured according to the ISO25178 standard to obtain an equivalent straight line and a load area ratio curve, 0% to 100% of the equivalent straight line corresponds to the load area ratio curve to define a core height, the portion of the load area ratio curve higher than the core height is a protruding peak portion, and the average height of the protruding peak portion is Aph; the surface of the microstructure layer is measured according to the ISO25178 standard, the number of peak vertices of the microstructure layer greater than the core height and greater than 4μm is Hpq, and at least one of the following conditions is satisfied: 2.0μm≤Aph≤40.1μm; 2≤Hpq≤400.

[0037] According to the imaging lens of the embodiment described in the previous paragraph, the average height of the protruding peaks is Aph, which can satisfy the following condition: 2.0 μm≤Aph≤21.2 μm.

[0038] According to the imaging lens of the embodiment described in the preceding paragraph, the surface of the microstructure layer is measured according to the ISO25178 standard, the number of peaks of the microstructure layer that are greater than the core and greater than 4 μm is Hpq; the average height of the protruding peaks is Aph, and at least one of the following conditions is satisfied: 2≤Hpq≤400; 5.4μm≤Aph≤19.2μm. In addition, at least one of the following conditions is satisfied: 5.4μm≤Aph≤19.2μm; 40≤Hpq≤210.

[0039] According to the imaging lens of the embodiment described in the preceding paragraph, the surface of the microstructure layer is measured according to the ISO25178 standard, and the load area ratio of the core part and the protruding peak part in the load area ratio curve is Ymr1, which satisfies the following conditions: 17%≤Ymr1≤30%. The number of peaks of the microstructure layer that are greater than the core part and greater than 4μm is Hpq; the average height of the protruding peak part is Aph, and at least one of the following conditions is satisfied: 40≤Hpq≤210; 7.3μm≤Aph≤14.5μm.

[0040] In the imaging lens according to the embodiment described in the preceding paragraph, the load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1; the average height of the protruding peak portion is Aph; the number of peak vertices of the microstructure layer that is greater than the height of the core portion and greater than 4 μm is Hpq, which simultaneously satisfies the following conditions: 17%≤Ymr1≤25%; 7.3 μm≤Aph≤14.5 μm; and 40≤Hpq≤210.

[0041] According to the imaging lens of the embodiment described in the previous paragraph, the height of the air gap is Ha, which can meet the following conditions: 1 μm <Ha<102μm。

[0042] The imaging lens according to the embodiment described in the previous paragraph may further include an adhesive element, wherein the adhesive element is disposed on at least one of the first surface and the second surface, and the adhesive element forms an air gap in at least a portion of the area between the microstructure layer and the optical element.

[0043] According to the imaging lens of the embodiment described in the preceding paragraph, the thickness of the sheet-shaped light shielding element is TL, which can meet the following conditions: 10 μm <TL<170μm。

[0044] According to the imaging lens of the embodiment described in the preceding paragraph, the thickness of the adhesive element is TA, which can satisfy the following conditions: 3 μm <TA<105μm。

[0045] According to the imaging lens of the embodiment described in the previous paragraph, the thickness difference of the adhesive element as a whole may be less than 10 μm.

[0046] According to the imaging lens of the embodiment described in the previous paragraph, the first surface may include a planar portion. The planar portion is smoother than other areas of the first surface, and the planar portion is in physical contact with the optical element.

[0047] According to the imaging lens of the embodiment described in the previous paragraph, the sheet-shaped shading element may further include a nanostructure layer. The nanostructure layer is disposed on the surface of the microstructure layer, and the nanostructure layer may include a plurality of nanoparticles, wherein the nanoparticles are stacked and the number of the nanoparticles decreases in a direction away from the sheet-shaped shading element.

[0048] According to an embodiment of the present disclosure, an imaging lens module is provided, comprising an imaging lens as described in the above embodiment and an electronic photosensitive element. The electronic photosensitive element is disposed on an imaging surface of the imaging lens module and is used to receive imaging light from the imaging lens.

[0049] According to an embodiment of the present disclosure, an electronic device is provided, comprising an imaging lens module as described in the above embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1A A schematic diagram illustrating an imaging lens module according to a first embodiment of the present disclosure;

[0051] Figure 1B Draw according to Figure 1A An exploded view of the imaging lens in the first embodiment;

[0052] Figure 1C Draw according to Figure 1A A schematic diagram of a light path turning element and a sheet-shaped light shielding element in the first embodiment;

[0053] Figure 1D Draw according to Figure 1A A schematic diagram of a sheet-shaped shading element in the first embodiment;

[0054] Figure 1E Draw according to Figure 1A A schematic diagram of an optical path turning element in the first embodiment;

[0055] Figure 1F Draw according to Figure 1E A schematic cross-sectional view of a sheet-shaped shading element in the first embodiment;

[0056] Figure 1G Draw according to Figure 1F A schematic cross-sectional view of a nanostructure layer in the first embodiment;

[0057] Figure 2AA schematic diagram illustrating an imaging lens module according to a second embodiment of the present disclosure;

[0058] Figure 2B Draw according to Figure 2A A partial enlarged view of the imaging lens module in the second embodiment;

[0059] Figure 2C Draw according to Figure 2B A schematic cross-sectional view of a sheet-shaped shading element in a second embodiment;

[0060] Figure 2D Draw according to Figure 2A A schematic diagram of the installation of the fixing ring and the sheet-shaped shading element in the second embodiment;

[0061] Figure 2E Draw according to Figure 2A A schematic diagram of a fixing ring and a sheet-shaped shading element in a second embodiment;

[0062] Figure 3A A schematic diagram illustrating an imaging lens module according to a third embodiment of the present disclosure;

[0063] Figure 3B Draw according to Figure 3A A partial enlarged view of the imaging lens module in the third embodiment;

[0064] Figure 3C Draw according to Figure 3B A schematic cross-sectional view of a sheet-shaped shading element in a third embodiment;

[0065] Figure 3D Draw according to Figure 3A A partial cross-sectional view of an imaging lens in a third embodiment;

[0066] Figure 3E Draw according to Figure 3A A partial exploded view of the imaging lens in the third embodiment;

[0067] Figure 4A A schematic diagram illustrating an imaging lens module according to a fourth embodiment of the present disclosure;

[0068] Figure 4B Draw according to Figure 4A A partial enlarged view of the imaging lens module in the fourth embodiment;

[0069] Figure 4C Draw according to Figure 4A Another enlarged view of a portion of the imaging lens module in the fourth embodiment;

[0070] Figure 4D Draw according to Figure 4A Another enlarged view of a portion of the imaging lens module in the fourth embodiment;

[0071] Figure 4E Draw according to Figure 4C A schematic diagram of a sheet-shaped shading element in a fourth embodiment;

[0072] Figure 5A A schematic diagram illustrating an electronic device according to a fifth embodiment of the present disclosure;

[0073] Figure 5B Draw according to Figure 5A Another schematic diagram of the electronic device in the fifth embodiment;

[0074] Figure 5C Draw according to Figure 5B A schematic diagram of an image captured by an electronic device in a fifth embodiment;

[0075] Figure 5D Draw according to Figure 5B A schematic diagram of another image captured by the electronic device in the fifth embodiment;

[0076] Figure 5E Draw according to Figure 5B A schematic diagram of another image captured by the electronic device in the fifth embodiment;

[0077] Figure 6 A schematic diagram illustrating an electronic device according to a sixth embodiment of the present disclosure;

[0078] Fig. 7A A schematic diagram showing a vehicle tool according to a seventh embodiment of the present disclosure;

[0079] Figure 7B Draw according to Fig. 7A Another schematic diagram of the vehicle tool in the seventh embodiment; and

[0080] Figure 7C Draw according to Fig. 7A Another schematic diagram of the vehicle tool in the seventh embodiment.

[0081]

Explanation of symbols

[0082] 10,20,30,40: Imaging lens module

[0083] 11,21,31,41: Electronic photosensitive elements

[0084] 100,710: Imaging lens

[0085] 111,211,311: Lens elements

[0086] 112,212,312,412: Lens tube

[0087] 113,213:Assembly components

[0088] 120, 220, 320, 420a, 420b, 420c: Sheet-shaped shading element

[0089] 121, 221, 321, 421a, 421b, 421c: first surface

[0090] 122,222,322,422a,422b,422c: Second surface

[0091] 123,223,323,423b: Microstructure layer

[0092] 123a: Fixed layer

[0093] 123b, 223b, 323b: micron particles

[0094] 124,224,324: coating layer

[0095] 125,225,325: core material

[0096] 126: Nanostructured layer

[0097] 130,230: Optical path turning element

[0098] 130a, 230a: Reflective surface

[0099] 131,231: Optical surfaces

[0100] 140,240,340,440: adhesive element

[0101] 214: Fixed ring

[0102] 313,411a,411b,411c,411d,411e,411f,411g,413: Optical components

[0103] 450: plane part

[0104] 50,60: Electronic devices

[0105] 521: User Interface

[0106] 522,611,612: Ultra-wide-angle imaging lens

[0107] 523: High-pixel imaging lens

[0108] 524,615,616,617,618: Telephoto lenses

[0109] 525: Imaging signal processing element

[0110] 620: Flash module

[0111] 613,614: Wide-angle imaging lens

[0112] 619:TOF module

[0113] 70: Vehicle Tools

[0114] G, G1, G2, G3: Air gap

[0115] IMG: Imaging surface

[0116] L: Imaging light

[0117] P: Nanoparticles

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

[0119] θ: viewing angle

[0120] Ha: Height of air gap

[0121] TA: Thickness of adhesive element

[0122] TL: thickness of the sheet shading element DETAILED DESCRIPTION

[0123] The present disclosure provides an imaging lens, which includes a sheet-shaped light shielding element, wherein the sheet-shaped light shielding element includes a first surface, a second surface and a microstructure layer, wherein the second surface is disposed opposite to the first surface, and the microstructure layer is disposed at least on the first surface, and the microstructure layer forms a convexity on the first surface. A surface of the microstructure layer is measured according to the ISO25178 standard, and the number of peaks per square millimeter of the microstructure layer is Ypd, which satisfies the following conditions: 20000 (1 / mm 2 )≤Ypd≤110000(1 / mm 2 ).

[0124] Thus, protrusions can be formed on the first surface by mixing micron particles into the microstructure layer, and micron particles of various particle sizes can be used to adjust the surface properties. Further, the protrusions can be spherical or conical, the material of the micron particles can be silicon oxide, titanium oxide, carbon black or acrylic resin, and the protrusions can be arranged regularly or irregularly, but are not limited thereto.

[0125] Furthermore, the calculation method of the individual values ​​of Ypd can correspond to the peak density (Spd) in ISO25178, which can roughly reflect the number of peaks on the surface of the microstructure layer per unit area, and can also roughly reflect the coarseness of the protruding particles. When the conditions are met, the number and coarseness of the protruding particles can be maintained in a moderate range. In addition, it can meet the following conditions: 20000 (1 / mm 2 )≤Ypd≤80000(1 / mm2 ).

[0126] The imaging lens may further include a plurality of lens elements and an optical path turning element, wherein the lens element defines an optical axis, the optical path turning element is used to turn the optical axis, the optical path turning element includes an optical surface, and the imaging light of the imaging lens undergoes at least one total reflection on the optical surface. Further, the sheet-like shading element is disposed correspondingly to the optical path turning element, the first surface is disposed facing the optical surface, and at least a portion of the area between the microstructure layer and the optical surface has an air gap. Since the optical surface easily allows stray light to pass through the optical path turning element, the combination of the air interlayer and the specific surface properties helps to block the stray light to avoid the stray light being reflected back to the optical path turning element. Furthermore, the material of the optical path turning element may be glass or plastic, but is not limited thereto.

[0127] Alternatively, the imaging lens may further include an optical element, wherein the sheet-shaped light shielding element is disposed correspondingly to the optical element, the first surface is disposed facing the optical element, and at least a portion of the area between the microstructure layer and the optical element has an air gap. Specifically, the optical element may be a glass lens, a plastic lens, a glass optical path turning element, a plastic optical path turning element, a fixing ring, a spacer ring, a lens barrel, and other elements applied to the imaging lens, but is not limited thereto.

[0128] The surface of the microstructure layer is measured according to the ISO25178 standard to obtain an equivalent straight line and a load area ratio curve. The 0% to 100% of the equivalent straight line corresponds to the load area ratio curve to define the height of a core portion. The portion of the load area ratio curve that is higher than the height of the core portion is a protruding peak portion. The load area ratio that separates the core portion and the protruding peak portion in the load area ratio curve is Ymr1, which can meet the following conditions: 17%≤Ymr1≤45%. Specifically, the calculation method of the individual values ​​of Ymr1 can correspond to the load area ratio (Smr1) that separates the protruding peak portion and the core portion in ISO25178, which can roughly reflect the percentage of the area occupied by the relatively high peak relative to the total analysis area, wherein the load area ratio curve is also called Abbott-Firestone Curve or Bearing Area Curve. In addition, it can meet the following conditions: 17%≤Ymr1≤30%. In addition, it can meet the following conditions: 17%≤Ymr1≤25%.

[0129] The surface of the microstructure layer is measured according to the ISO25178 standard to obtain an equivalent straight line and a load area ratio curve. The 0% to 100% of the equivalent straight line corresponds to the load area ratio curve to define the height of a core portion. The portion of the load area ratio curve higher than the height of the core portion is a protruding peak portion, and the average height of the protruding peak portion is Aph. The surface of the microstructure layer is measured according to the ISO25178 standard. The number of peak vertices of the microstructure layer greater than the height of the core portion and greater than 4 μm is Hpq, and at least one of the following conditions is satisfied: 2.0 μm ≤ Aph ≤ 40.1 μm; 2 ≤ Hpq ≤ 400. In addition, at least one of the following conditions is satisfied: 2.0 μm ≤ Aph ≤ 21.2 μm; 5 ≤ Hpq ≤ 300. In addition, at least one of the following conditions is satisfied: 2 ≤ Hpq ≤ 400; 5.4 μm ≤ Aph ≤ 19.2 μm. In addition, at least one of the following conditions is satisfied: 5.4 μm ≤ Aph ≤ 19.2 μm; 40 ≤ Hpq ≤ 210. In addition, at least one of the following conditions is satisfied: 40 ≤ Hpq ≤ 210; 7.3 μm ≤ Aph ≤ 14.5 μm.

[0130] Furthermore, the calculation method of the individual value of Aph can correspond to the height of the protruding peak (Spk) in ISO25178, which can roughly reflect the height difference between the relatively high protruding particles and other particles in the protrusions on the microstructure layer. When the value of Aph is high, it means that there are some protruding particles with a higher protrusion degree on the microstructure layer, which helps to improve the interception efficiency of stray light. In addition, the calculation method of the individual value of Hpq can be achieved by setting the measurement threshold of the instrument (greater than the core height and greater than 4μm) and generating the measurement value through the calculation of the instrument. However, in some cases, such as when the size of the microstructure is too large, the instrument will produce a reading error. At this time, the number of peak vertices can also be directly calculated through the photo. Hpq can roughly reflect the number of peak vertices with a relatively high protrusion degree on the microstructure layer. When Hpq is maintained at a moderate number, it helps to form a light trap structure, so that the stray light is weakened in the light trap.

[0131] Specifically, the microstructure layer needs to consider multiple surface parameters. For example, when one of the conditions is not met, there is still a chance to meet other conditions to supplement the ability to eliminate stray light, and when more conditions are met, it helps to improve its performance in eliminating stray light. According to experimental speculation, the number of peaks, the height of the protrusions, and the density of the protrusions in the microstructure layer will affect the ability to eliminate stray light. When the parameter conditions are maintained within a specific range, it helps to reduce stray light in the air gap.

[0132] The imaging lens may further include an adhesive element, wherein the adhesive element is disposed on at least one of the first surface and the second surface, and the adhesive element forms an air gap in at least a portion of the area between the microstructure layer and the optical surface or in at least a portion of the area between the microstructure layer and the optical element. In this way, the arrangement position of the sheet-like shading element does not need to be limited by the structural design of the adjacent optical element, which helps to improve the design freedom of the imaging lens. Specifically, the adhesive element is used to fix the sheet-like shading element on other optical elements.

[0133] The sheet-like shading element may further include a nanostructure layer, wherein the nanostructure layer is disposed on the surface of the microstructure layer, and the nanostructure layer includes a plurality of nanoparticles. Specifically, the nanoparticles are stacked, and the number of the nanoparticles decreases in the direction away from the sheet-like shading element. This helps to maintain a low reflectivity while having a microstructure layer of a larger size. Specifically, the decreasing number of nanoparticles helps to form a gradient refractive index to reduce the reflectivity, and the above-mentioned surface properties are more likely to produce a plane at the peak of the microstructure layer to increase the reflectivity.

[0134] The first surface may include a plane portion, wherein the plane portion is smoother than other areas of the first surface, and the plane portion is in physical contact with the optical element. This helps to improve assembly accuracy. Specifically, the plane portion can be formed by controlling the setting range of the microstructure layer, or the microstructure layer in a partial area can be compacted by a stamping process to form a smoother area.

[0135] The microstructure layer may further include a fixing layer, wherein the fixing layer covers the micron particles to fix the micron particles on the first surface, so that protrusions are formed on the first surface.

[0136] The average height of the protruding peaks is Aph, which may satisfy the following conditions: 2.0 μm ≤ Aph ≤ 40.1 μm. In addition, it may satisfy the following conditions: 2.0 μm ≤ Aph ≤ 21.2 μm. In addition, it may satisfy the following conditions: 5.4 μm ≤ Aph ≤ 19.2 μm. In addition, it may satisfy the following conditions: 7.3 μm ≤ Aph ≤ 14.5 μm.

[0137] The surface of the microstructure layer is measured according to ISO25178 standard. The number of peaks of the microstructure layer that are greater than the height of the core and greater than 4 μm is Hpq, which can meet the following conditions: 2≤Hpq≤400. In addition, it can meet the following conditions: 5≤Hpq≤300. In addition, it can meet the following conditions: 40≤Hpq≤210.

[0138] Alternatively, the load area ratio that separates the core part from the protruding peak part in the load area ratio curve is Ymr1; the average height of the protruding peak part is Aph; the number of peak vertices where the microstructure layer is greater than the height of the core part and greater than 4 μm is Hpq, which can simultaneously satisfy the following conditions: 17% ≤ Ymr1 ≤ 25%; 7.3 μm ≤ Aph ≤ 14.5 μm; and 40 ≤ Hpq ≤ 210.

[0139] The height of the air gap is Ha, which can satisfy the following conditions: 1 μm < Ha < 102 μm. The air gap can prevent the microstructure layer from contacting the optical surface, thereby reducing damage to the microstructure layer, and stray light can interact with the microstructure layer in the air gap, weakening the stray light in the air gap. Furthermore, the air gap can be formed by a viscous element or mechanism assembly, and the height of the air gap can be a variable value, where the height of the air gap can be affected by the undulation of the microstructure layer and the position change of the sheet-shaped light-shielding element.

[0140] The thickness of the sheet-shaped light-shielding element is TL, which can satisfy the following conditions: 10 μm < TL < 170 μm. A thicker sheet-shaped light-shielding element helps to prevent the sheet-shaped light-shielding element from bending and affecting the light-shielding position.

[0141] The thickness of the viscous element is TA, which can satisfy the following conditions: 3 μm < TA < 105 μm. Thereby, it helps to form an air gap, and an appropriate thickness can provide better adhesion.

[0142] The overall thickness difference of the viscous element can be less than 10 μm. Thereby, it helps to keep the height of the air gap stable.

[0143] Specifically, the parameters used in this disclosure are measured using VK-X3100. Among them, the measurement magnification for the parameter Ypd is 480 times, the objective lens is 20 times, the measurement size is 1024×768, the analysis area is 500 μm×500 μm, and the measurement spacing is 0.5 μm; the measurement magnification for the parameter Ymr1 is 480 times, the objective lens is 20 times, the measurement size is 1024×768, the analysis area is 500 μm×500 μm, and the measurement spacing is 0.5 μm; the measurement magnification for the parameter Aph is 2400 times, the objective lens is 100 times, the measurement size is 1024×768, the analysis area is 100 μm×100 μm, and the measurement spacing is 0.2 μm; the measurement magnification for the parameter Hpq is 2400 times, the objective lens is 100 times, the measurement size is 1024×768, the analysis area is 100 μm×100 μm, and the measurement spacing is 0.2 μm. Furthermore, for each parameter, the values in at least five different regions on the microstructure layer need to be measured, and their average values are calculated as the basis for conditional judgment.

[0144] The various technical features of the imaging lens disclosed above can be combined and configured to achieve corresponding effects.

[0145] The present disclosure provides an imaging lens module, comprising the aforementioned imaging lens and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the imaging lens module, and the electronic photosensitive element is used to receive imaging light from the imaging lens.

[0146] The present disclosure provides an electronic device including the aforementioned imaging lens module.

[0147] According to the above implementation modes, specific embodiments are proposed below and described in detail with reference to the accompanying drawings.

[0148] <First embodiment>

[0149] Please refer to Figure 1A , which is a schematic diagram of an imaging lens module 10 according to the first embodiment of the present disclosure. Figure 1A It can be seen that the imaging lens module 10 includes an imaging lens 100 (indicated at Figure 1B ) and an electronic photosensitive element 11, wherein the electronic photosensitive element 11 is disposed on an imaging surface IMG of the imaging lens module 10, and the electronic photosensitive element 11 is used to receive the imaging light L of the imaging lens 100.

[0150] Please refer to Figure 1B , which is drawn according to Figure 1A An exploded view of the imaging lens 100 in the first embodiment. Figure 1A and Figure 1B It can be seen that the imaging lens 100 includes a plurality of lens elements 111, a sheet-shaped light shielding element 120 and an optical path turning element 130, wherein the lens element 111 defines an optical axis (not shown), the sheet-shaped light shielding element 120 and the optical path turning element 130 are disposed correspondingly, and the optical path turning element 130 is used to turn the optical axis. Specifically, the optical path turning element 130 folds the optical path, thereby reducing the volume of the imaging lens 100. Furthermore, the imaging lens 100 is a telephoto lens, and the material of the optical path turning element 130 can be glass or plastic, but is not limited thereto.

[0151] Depend on Figure 1A and Figure 1B It can be known that the imaging lens 100 may further include a lens barrel 112 and an assembly element 113 , wherein the lens barrel 112 is used to accommodate the lens element 111 and the light path turning element 130 , and the assembly element 113 is used to fix the light path turning element 130 .

[0152] Please refer to Figure 1C to Figure 1F ,in Figure 1C Draw according to Figure 1AA schematic diagram of the light path turning element 130 and the sheet-shaped light shielding element 120 in the first embodiment, Figure 1D Draw according to Figure 1A A schematic diagram of a sheet-shaped shading element 120 in the first embodiment, Figure 1E Draw according to Figure 1A A schematic diagram of the light path turning element 130 in the first embodiment, Figure 1F Draw according to Figure 1E A schematic cross-sectional view of the sheet-shaped shading element 120 in the first embodiment. Figure 1A , Figure 1C , Figure 1D , Figure 1E and Figure 1F It can be seen that the optical path turning element 130 includes an optical surface 131, wherein the imaging light L of the imaging lens 100 is totally reflected at least once on the optical surface 131. The sheet-shaped light shielding element 120 includes a first surface 121, a second surface 122, and a microstructure layer 123, wherein the first surface 121 is disposed facing the optical surface 131, the second surface 122 is disposed opposite to the first surface 121, and the microstructure layer 123 is disposed on the first surface 121. The microstructure layer 123 forms a protrusion on the first surface 121, and at least a portion of the area between the microstructure layer 123 and the optical surface 131 has an air gap G.

[0153] In detail, the optical surface 131 allows stray light to easily pass through the optical path turning element 130, and the combination of the air gap G and the specific surface properties helps to block the stray light to prevent the stray light from being reflected back to the optical path turning element 130. Furthermore, the air gap G can prevent the microstructure layer 123 from contacting the optical surface 131, thereby reducing damage to the microstructure layer 123, and the stray light can interact with the microstructure layer 123 in the air gap G, so that the stray light is weakened in the air gap G.

[0154] Depend on Figure 1C to Figure 1E It can be seen that the imaging lens 100 may further include an adhesive element 140, wherein the adhesive element 140 is disposed on the first surface 121, and the adhesive element 140 forms an air gap G in at least a portion of the area between the microstructure layer 123 and the optical surface 131. In this way, the arrangement position of the sheet-like light shielding element 120 does not need to be limited by the structural design of the adjacent optical element (i.e., the optical path turning element 130), which helps to improve the design freedom of the imaging lens 100. Specifically, the adhesive element 140 is used to fix the sheet-like light shielding element 120 on the optical path turning element 130, and the air gap G can be formed by the adhesive element 140.

[0155] Depend on Figure 1EIt can be seen that the optical path turning element 130 has three reflective surfaces 130 a , wherein two of the reflective surfaces 130 a reflect light by coating, and another one of the reflective surfaces 130 a reflects light by the principle of total optical reflection.

[0156] Depend on Figure 1F It can be known that the sheet-like shading element 120 may further include two cladding layers 124 and a core material 125 , wherein the core material 125 is disposed between the cladding layers 124 , and the cladding layers 124 are connected to the first surface 121 and the second surface 122 respectively.

[0157] Please refer to Figure 1G , which is drawn according to Figure 1F A schematic cross-sectional view of the nanostructure layer 126 in the first embodiment. Figure 1F and Figure 1G It can be seen that the sheet-like shading element 120 may further include a nanostructure layer 126, wherein the nanostructure layer 126 is disposed on the surface of the microstructure layer 123, and the nanostructure layer 126 includes a plurality of nanoparticles P, wherein the nanoparticles P are stacked, and the number of the nanoparticles P decreases in a direction away from the sheet-like shading element 120. This helps to maintain a low reflectivity while having a microstructure layer of a larger size. Specifically, the decreasing number of nanoparticles P helps to form a gradient refractive index to reduce the reflectivity.

[0158] Depend on Figure 1G It can be seen that the microstructure layer 123 may further include a fixing layer 123a, wherein the protrusions of the microstructure layer 123 may be formed by micron particles 123b, and the fixing layer 123a is coated on the surface of the micron particles 123b, and the fixing layer 123a covers the micron particles 123b to fix the micron particles 123b on the first surface 121. Further, the micron particles 123b may be mixed into the microstructure layer 123 to form protrusions on the first surface 121, and micron particles 123b of various particle sizes may be used to adjust the surface properties, wherein the protrusions may be spherical or conical, and the material of the micron particles 123b may be silicon oxide, titanium oxide, carbon black or acrylic resin, and the protrusions may be regularly arranged or irregularly arranged, but are not limited thereto.

[0159] Depend on Figure 1E It can be seen that the height of the air gap G is Ha, the thickness of the sheet-shaped light shielding element 120 is TL, and the thickness of the adhesive element 140 is TA, and the parameters satisfy the conditions in Table 1. Furthermore, the thickness difference of the adhesive element 140 as a whole can be less than 10 μm.

[0160]

[0161] Furthermore, a surface of the microstructure layer 123 is measured according to the ISO25178 standard, and the number of peaks per square millimeter of the microstructure layer 123 is Ypd; the surface of the microstructure layer 123 is measured according to the ISO25178 standard to obtain an equivalent straight line and a load area ratio curve, 0% to 100% of the equivalent straight line corresponds to the load area ratio curve to define a core height, the portion of the load area ratio curve higher than the core height is a protruding peak portion, and the load area ratio separating the core and the protruding peak portion in the load area ratio curve is Ymr1; the average height of the protruding peak portion is Aph; the surface of the microstructure layer 123 is measured according to the ISO25178 standard, and the number of peaks of the microstructure layer 123 greater than the core height and greater than 4μm is Hpq, and the parameters meet the conditions of Table 2 below. It must be noted that samples 1 to 24 represent the values ​​of twenty-four microstructure layers, and samples 1 to 24 can all be applied to the first embodiment.

[0162]

[0163]

[0164] It must be pointed out that Figure 1C and Figure 1D The point distribution range in is the distribution range of the microstructure layer 123, and Figure 1E to Figure 1G For the convenience of illustrating the configuration, the component thickness, structure size and structure shape are not drawn completely according to the actual proportion.

[0165] <Second embodiment>

[0166] Please refer to Figure 2A , which is a schematic diagram of an imaging lens module 20 according to a second embodiment of the present disclosure. Figure 2A It can be known that the imaging lens module 20 includes an imaging lens (not shown) and an electronic photosensitive element 21, wherein the electronic photosensitive element 21 is disposed on an imaging surface IMG of the imaging lens module 20, and the electronic photosensitive element 21 is used to receive imaging light L of the imaging lens.

[0167] The imaging lens includes a plurality of lens elements 211, a sheet-shaped light shielding element 220 and an optical path turning element 230, wherein the lens element 211 defines an optical axis (not shown), the sheet-shaped light shielding element 220 and the optical path turning element 230 are disposed correspondingly, and the optical path turning element 230 is used to turn the optical axis. Specifically, the optical path is folded by the optical path turning element 230, thereby reducing the volume of the imaging lens.

[0168] The optical path turning element 230 has three reflecting surfaces 230 a , wherein two of the reflecting surfaces 230 a reflect light by coating, and the other one of the reflecting surfaces 230 a reflects light by the principle of total optical reflection.

[0169] The imaging lens may further include a lens barrel 212 and an assembly element 213 , wherein the lens barrel 212 is used to accommodate the lens element 211 and the light path turning element 230 , and the assembly element 213 is used to fix the light path turning element 230 .

[0170] Please refer to Figure 2B and Figure 2C ,in Figure 2B Draw according to Figure 2A A partial enlarged view of the imaging lens module 20 in the second embodiment, Figure 2C Draw according to Figure 2B A schematic cross-sectional view of a sheet-shaped shading element 220 in the second embodiment. FIG. 2A to FIG. 2C It can be seen that the light path turning element 230 includes an optical surface 231, wherein the imaging light L of the imaging lens is totally reflected at least once on the optical surface 231. The sheet-shaped light shielding element 220 includes a first surface 221, a second surface 222, and a microstructure layer 223, wherein the first surface 221 is disposed facing the optical surface 231, the second surface 222 is disposed opposite to the first surface 221, and the microstructure layer 223 is disposed on the first surface 221. The microstructure layer 223 forms a protrusion on the first surface 221, and at least a portion of the area between the microstructure layer 223 and the optical surface 231 has an air gap G.

[0171] In detail, the optical surface 231 allows stray light to easily pass through the optical path turning element 230, and the combination of the air gap G and the specific surface properties helps to block the stray light to prevent the stray light from being reflected back to the optical path turning element 230. Furthermore, the air gap G can prevent the microstructure layer 223 from contacting the optical surface 231, thereby reducing damage to the microstructure layer 223, and the stray light can interact with the microstructure layer 223 in the air gap G, so that the stray light is weakened in the air gap G.

[0172] Please refer to Figure 2D and Figure 2E ,in Figure 2D Draw according to Figure 2A The second embodiment is a schematic diagram of the installation of the fixing ring 214 and the sheet-shaped shading element 220. Figure 2E Draw according to Figure 2A A schematic diagram of the fixing ring 214 and the sheet-shaped shading element 220 in the second embodiment. Figure 2B , Figure 2D and Figure 2EIt can be seen that the imaging lens may further include an adhesive element 240, wherein the adhesive element 240 is disposed on the second surface 222. In this way, the location of the sheet-like light shielding element 220 does not need to be limited by the mechanism design of the adjacent optical element (i.e., the fixing ring 214), which helps to improve the design freedom of the imaging lens. Specifically, the adhesive element 240 is used to fix the sheet-like light shielding element 220 on the fixing ring 214.

[0173] Depend on Figure 2C It can be known that the sheet-like shading element 220 may further include a coating layer 224 and a core material 225 , wherein the core material 225 is disposed between the microstructure layer 223 and the coating layer 224 , and the coating layer 224 is connected to the second surface 222 .

[0174] The protrusions of the microstructure layer 223 may be formed by micron particles 223b, and the micron particles 223b are located on the first surface 221. Specifically, the micron particles 223b may be mixed into the microstructure layer 223 to form protrusions on the first surface 221, and micron particles 223b of various particle sizes may be used to adjust the surface properties, wherein the protrusions may be spherical or conical, and the material of the micron particles 223b may be silicon oxide, titanium oxide, carbon black or acrylic resin, and the protrusions may be regularly arranged or irregularly arranged, but are not limited thereto.

[0175] Depend on Figure 2B It can be seen that the height of the air gap G is Ha, the thickness of the sheet-like shading element 220 is TL, and the thickness of the adhesive element 240 is TA. The parameters satisfy the conditions in Table 3 below.

[0176]

[0177]

[0178] Furthermore, the parameters Ypd, Ymr1, Aph, and Hpq of samples 1 to 24 in Table 2 can be applied to the second embodiment.

[0179] It must be pointed out that Figure 2B and Figure 2C For the convenience of illustrating the configuration, the component thickness, structure size and structure shape are not drawn completely according to the actual proportion.

[0180] <Third embodiment>

[0181] Please refer to Figure 3A , which is a schematic diagram of an imaging lens module 30 according to a third embodiment of the present disclosure. Figure 3AIt can be seen that the imaging lens module 30 includes an imaging lens (not shown) and an electronic photosensitive element 31, wherein the electronic photosensitive element 31 is disposed on an imaging surface IMG of the imaging lens module 30, and the electronic photosensitive element 31 is used to receive imaging light L of the imaging lens.

[0182] Please refer to Figure 3B and Figure 3C ,in Figure 3B Draw according to Figure 3A A partial enlarged view of the imaging lens module 30 in the third embodiment, Figure 3C Draw according to Figure 3B A schematic cross-sectional view of a sheet-shaped shading element 320 in the third embodiment. FIG. 3A to FIG. 3C It can be seen that the imaging lens includes a plurality of lens elements 311, an optical element 313 and a sheet-shaped light shielding element 320, wherein the lens element 311 defines an optical axis (not shown), and the sheet-shaped light shielding element 320 is disposed corresponding to the optical element 313. In the third embodiment, the optical element 313 is a spacer ring, and one of the lens elements 311 that contacts the sheet-shaped light shielding element 320 is a molded glass lens.

[0183] Please refer to Figure 3D and Figure 3E ,in Figure 3D Draw according to Figure 3A A partial cross-sectional view of the imaging lens in the third embodiment, Figure 3E Draw according to Figure 3A Partial exploded view of the imaging lens in the third embodiment. Figure 3A , Figure 3D and Figure 3E It can be known that the imaging lens may further include a lens barrel 312 , wherein the lens barrel 312 is used to accommodate the lens element 311 , the optical element 313 and the sheet-shaped light shielding element 320 .

[0184] Depend on Figure 3B and Figure 3C It can be seen that the sheet-like shading element 320 includes a first surface 321, a second surface 322 and two microstructure layers 323, wherein the first surface 321 is arranged facing the optical element 313, the second surface 322 is arranged relative to the first surface 321, the microstructure layer 323 is arranged on the first surface 321 and the second surface 322, the microstructure layer 323 forms protrusions on the first surface 321 and the second surface 322, and at least a partial area between the microstructure layer 323 and the optical element 313 has an air gap G.

[0185] Depend on Figure 3B , Figure 3D and Figure 3EIt can be seen that the imaging lens may further include an adhesive element 340, wherein the adhesive element 340 is disposed on the first surface 321, and the adhesive element 340 forms an air gap G in at least a portion of the area between the microstructure layer 323 and the optical element 313. The adhesive element 340 can make the arrangement position of the sheet-like light-shielding element 320 not necessarily limited by the structural design of the adjacent optical element (i.e., the optical element 313), which helps to improve the design freedom of the imaging lens. Specifically, the adhesive element 340 is used to fix the sheet-like light-shielding element 320 on the optical element 313.

[0186] Depend on Figure 3C It can be known that the sheet-like shading element 320 may further include a coating layer 324 and a core material 325 , wherein the core material 325 is disposed between the microstructure layer 323 and the coating layer 324 , and the coating layer 324 is connected to the first surface 321 .

[0187] The protrusions of the microstructure layer 323 may be formed by micron particles 323b, and the micron particles 323b are located on the first surface 321 and the second surface 322. Specifically, the micron particles 323b may be mixed into the microstructure layer 323 to form protrusions on the first surface 321 and the second surface 322, and micron particles 323b of various particle sizes may be used to adjust the surface properties, wherein the protrusions may be spherical or conical, and the material of the micron particles 323b may be silicon oxide, titanium oxide, carbon black or acrylic resin, and the protrusions may be arranged regularly or irregularly, but are not limited thereto.

[0188] Depend on Figure 3B It can be seen that the height of the air gap G is Ha, the thickness of the sheet-like shading element 320 is TL, and the thickness of the adhesive element 340 is TA. The parameters satisfy the conditions in Table 4 below.

[0189]

[0190] Furthermore, the parameters Ypd, Ymr1, Aph, and Hpq of samples 1 to 24 in Table 2 can be applied to the third embodiment.

[0191] It must be pointed out that Figure 3D and Figure 3E The dotted distribution range in is the distribution range of the microstructure layer 323, and Figure 3B and Figure 3C For the convenience of illustrating the configuration, the component thickness, structure size and structure shape are not drawn completely according to the actual proportion.

[0192] <Fourth embodiment>

[0193] Please refer to Figure 4A , which is a schematic diagram of an imaging lens module 40 according to a fourth embodiment of the present disclosure. Figure 4AIt can be seen that the imaging lens module 40 includes an imaging lens (not shown) and an electronic photosensitive element 41, wherein the electronic photosensitive element 41 is disposed on an imaging surface IMG of the imaging lens module 40, and the electronic photosensitive element 41 is used to receive imaging light L of the imaging lens.

[0194] Please refer to FIG. 4B to FIG. 4D ,in Figure 4B Draw according to Figure 4A A partial enlarged view of the imaging lens module 40 in the fourth embodiment, Figure 4C Draw according to Figure 4A Another enlarged view of a portion of the imaging lens module 40 in the fourth embodiment, Figure 4D Draw according to Figure 4A Another enlarged view of a portion of the imaging lens module 40 in the fourth embodiment. FIG. 4A to FIG. 4D It can be seen that the imaging lens includes a plurality of optical elements 411a, 411b, 411c, 411d, 411e, 411f, 411g, 413 and a plurality of sheet-shaped shading elements 420a, 420b, 420c, wherein the sheet-shaped shading element 420a is disposed correspondingly to the optical elements 411a and 411b, the sheet-shaped shading element 420b is disposed correspondingly to the optical elements 411c and 411d, and the sheet-shaped shading element 420c is disposed correspondingly to the optical elements 411g and 413. In the fourth embodiment, the optical elements 411a, 411d, 411g are plastic lenses, and the optical element 413 is a spacer ring.

[0195] The imaging lens may further include a lens barrel 412, wherein the lens barrel 412 is used to accommodate the optical elements 411a, 411b, 411c, 411d, 411e, 411f, 411g, 413 and the sheet-like light shielding elements 420a, 420b, 420c.

[0196] Depend on Figure 4B It can be seen that the sheet-like shading element 420a includes a first surface 421a, a second surface 422a and a microstructure layer (not shown in the figure), wherein the first surface 421a is arranged facing the optical element 411a, the second surface 422a is arranged relative to the first surface 421a, the microstructure layer is at least arranged on the first surface 421a, the microstructure layer forms a protrusion on the first surface 421a, and at least a partial area between the microstructure layer and the optical element 411a has an air gap G1.

[0197] The imaging lens may further include an adhesive element 440, wherein the adhesive element 440 is disposed on the first surface 421a, and the adhesive element 440 forms an air gap G1 in at least a portion of the area between the microstructure layer and the optical element 411a. The adhesive element 440 allows the arrangement position of the sheet-like light shielding element 420a to be free from being restricted by the structural design of the adjacent optical element (i.e., the optical element 411a), thereby helping to increase the design freedom of the imaging lens. Specifically, the adhesive element 440 is used to fix the sheet-like light shielding element 420a on the optical element 411a.

[0198] Please refer to Figure 4E , which is drawn according to Figure 4C Schematic diagram of a sheet-shaped shading element 420b in the fourth embodiment. Figure 4C and Figure 4E It can be seen that the sheet-like shading element 420b includes a first surface 421b, a second surface 422b and a microstructure layer 423b, wherein the first surface 421b is arranged facing the optical element 411d, the second surface 422b is arranged relative to the first surface 421b, the microstructure layer 423b is at least arranged on the first surface 421b, the microstructure layer 423b forms a protrusion on the first surface 421b, and at least a partial area between the microstructure layer 423b and the optical element 411d has an air gap G2.

[0199] Specifically, the air gap G2 can be formed by the assembly of the optical elements 411c and 411d. By the interlocking assembly of the optical elements 411c and 411d, an installation space can be formed between the optical elements 411c and 411d, so that the air gap G2 will be formed when the sheet-shaped light shielding element 420b is installed therein.

[0200] Furthermore, the first surface 421b may include a plane portion 450, wherein the plane portion 450 is smoother than other areas of the first surface 421b, and the plane portion 450 is in physical contact with the optical element 411d, and Figure 4C The dotted line in the figure indicates the range of the plane portion 450. This helps to improve the assembly accuracy. Further, the plane portion 450 can be formed by controlling the setting range of the microstructure layer 423b, or the microstructure layer 423b in a partial area can be compacted by a stamping process to form a smoother area.

[0201] Depend on Figure 4DIt can be seen that the sheet-like shading element 420c includes a first surface 421c, a second surface 422c and a microstructure layer (not shown in the figure), wherein the first surface 421c is arranged facing the optical element 411g, the second surface 422c is arranged relative to the first surface 421c, the microstructure layer is at least arranged on the first surface 421c, the microstructure layer forms a protrusion on the first surface 421c, and at least a partial area between the microstructure layer and the optical element 411g has an air gap G3.

[0202] Specifically, through Figure 4D The installation method in the embodiment is loose during installation, that is, the sheet-like shading element 420c may slightly shake in the installation space, and the height of the air gap G3 will change with the position change of the sheet-like shading element 420c.

[0203] Depend on FIG. 4B to FIG. 4D It can be seen that the height of the air gaps G1, G2, and G3 is Ha, the thickness of the sheet-like shading elements 420a, 420b, and 420c is TL, and the thickness of the adhesive element 440 is TA. The parameters meet the conditions in Table 5 below.

[0204]

[0205] Furthermore, the parameters Ypd, Ymr1, Aph, and Hpq of samples 1 to 24 in Table 2 can be applied to the fourth embodiment.

[0206] It must be pointed out that Figure 4E The dotted distribution range in is the distribution range of the microstructure layer 423b, and FIG. 4B to FIG. 4D For the convenience of illustrating the configuration, the component thickness, structure size and structure shape are not drawn completely according to the actual proportion.

[0207] <Fifth embodiment>

[0208] Please refer to Figure 5A and Figure 5B ,in Figure 5A FIG. 5 is a schematic diagram showing an electronic device 50 according to a fifth embodiment of the present disclosure. Figure 5B Draw according to Figure 5A Another schematic diagram of the electronic device 50 in the fifth embodiment. Figure 5A and Figure 5BIt can be seen that the electronic device 50 is a smart phone, and the electronic device 50 may have a wireless communication function. The electronic device 50 includes an imaging lens module, and the imaging lens module includes an imaging lens and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the imaging lens module, and the electronic photosensitive element is used to receive imaging light from the imaging lens. Further, the imaging lens is an ultra-wide-angle imaging lens 522, a high-pixel imaging lens 523, and a telephoto imaging lens 524, and the user interface 521 is a touch screen, but is not limited thereto. Specifically, the imaging lens may be any imaging lens in the aforementioned first to fourth embodiments, but the present disclosure is not limited thereto.

[0209] The user interface 521 has a touch function, and the user can enter the shooting mode through the user interface 521, wherein the user interface 521 is used to display the picture, and can be used to manually adjust the shooting angle to switch different imaging lenses. At this time, the imaging lens collects imaging light on the electronic photosensitive element and outputs electronic signals related to the image to the imaging signal processing element (Image Signal Processor, ISP) 525.

[0210] Depend on Figure 5B It can be seen that, in response to the camera specifications of the electronic device 50, the electronic device 50 may further include an optical image stabilization component (not shown in the figure), and further, the electronic device 50 may further include at least one focus auxiliary module (not shown in the figure) and at least one sensor element (not shown in the figure). The focus auxiliary module may be a flash module that compensates for color temperature, an infrared ranging element, a laser focus module, etc. The sensor element may have the function of sensing physical momentum and actuation energy, such as an accelerometer, a gyroscope, and a Hall Effect Element to sense the shaking and jitter imposed by the user's hand or the external environment, thereby facilitating the automatic focus function and the optical image stabilization component configured in the imaging lens of the electronic device 50 to obtain good imaging quality, and helping the electronic device 50 according to the present disclosure to have multiple modes of shooting functions, such as optimized Selfie, low-light HDR (High Dynamic Range, high dynamic range imaging), high-resolution 4K (4K Resolution) video recording, etc. In addition, the user can directly view the shooting picture of the camera through the user interface 521 and manually operate the framing range on the user interface 521 to achieve a what-you-see-is-what-you-get auto-focus function.

[0211] Further, the imaging lens, optical image stabilization component, sensor element and focus auxiliary module can be arranged on a flexible printed circuit board (Flexible Printed Circuitboard, FPC) (not shown), and electrically connected to the imaging signal processing element 525 and other related elements through a connector (not shown) to execute the shooting process. Current electronic devices such as smart phones have a trend of being thin and light. The imaging lens and related elements are arranged on a flexible printed circuit board, and the circuit is integrated to the main board of the electronic device by using a connector. This can meet the requirements of the mechanism design and circuit layout of the limited space inside the electronic device and obtain a greater margin, and also make the automatic focus function of its imaging lens more flexibly controlled through the touch screen of the electronic device. In the fifth embodiment, the electronic device 50 can include a plurality of sensor elements and a plurality of focus auxiliary modules, and the sensor elements and the focus auxiliary modules are arranged on the flexible printed circuit board and at least one other flexible printed circuit board (not shown), and electrically connected to the imaging signal processing element 525 and other related elements through corresponding connectors to execute the shooting process. In other embodiments (not shown), the sensor element and the auxiliary optical element may also be disposed on a mainboard or other types of carrier boards of the electronic device according to the requirements of the mechanism design and circuit layout.

[0212] In addition, the electronic device 50 may further include but is not limited to a display unit (Display), a control unit (ControlUnit), a storage unit (StorageUnit), a random access memory (RAM), a read-only storage unit (ROM) or a combination thereof.

[0213] Figure 5C Draw according to Figure 5B A schematic diagram of an image captured by an electronic device 50 in the fifth embodiment. Figure 5C It can be seen that the ultra-wide-angle imaging lens 522 can capture images in a larger range and has the function of accommodating more scenery.

[0214] Figure 5D Draw according to Figure 5B A schematic diagram of another image captured by the electronic device 50 in the fifth embodiment. Figure 5D It can be seen that the high-pixel imaging lens 523 can capture images within a certain range and have high pixels, and has the function of high resolution and low deformation.

[0215] Figure 5E Draw according to Figure 5B A schematic diagram of another image captured by the electronic device 50 in the fifth embodiment. Figure 5E It can be seen that the telephoto imaging lens 524 has a high magnification function and can capture distant images and magnify them to a high magnification.

[0216] Depend on FIG. 5C to FIG. 5EIt can be seen that by framing with imaging lenses having different focal lengths and in combination with image processing technology, the zoom function can be implemented in the electronic device 50 .

[0217] <Sixth embodiment>

[0218] Please refer to Figure 6 , which is a schematic diagram of an electronic device 60 according to a sixth embodiment of the present disclosure. Figure 6 It can be seen that the electronic device 60 is a smart phone, and the electronic device 60 includes an imaging lens module, and the imaging lens module includes an imaging lens and an electronic photosensitive element, wherein the electronic photosensitive element is arranged on an imaging surface of the imaging lens module, and the electronic photosensitive element is used to receive imaging light from the imaging lens. Further, the imaging lens is an ultra-wide-angle imaging lens 611, 612, a wide-angle imaging lens 613, 614, a telephoto imaging lens 615, 616, 617, 618 and a TOF module (Time-Of-Flight: time-of-flight ranging module) 619, and the TOF module 619 can also be other types of imaging lenses, and is not limited to this configuration. Specifically, the imaging lens can be any imaging lens in the aforementioned first embodiment to the fourth embodiment, but the present disclosure is not limited thereto.

[0219] Furthermore, the telephoto imaging lenses 617 and 618 are used to bend the light path, but the present disclosure is not limited thereto.

[0220] In response to the camera specifications of the electronic device 60, the electronic device 60 may further include an optical image stabilization component (not shown in the figure), and further, the electronic device 60 may further include at least one focus auxiliary module (not shown in the figure) and at least one sensor element (not shown in the figure). The focus auxiliary module may be a flash module 620 that compensates for color temperature, an infrared ranging element, a laser focus module, etc. The sensor element may have the function of sensing physical momentum and actuation energy, such as an accelerometer, a gyroscope, and a Hall Effect Element to sense the shaking and jitter imposed by the user's hand or the external environment, thereby facilitating the automatic focus function and the optical image stabilization component configured in the imaging lens of the electronic device 60 to obtain good imaging quality, and helping the electronic device 60 according to the present disclosure to have multiple modes of shooting functions, such as optimized Selfie, low-light HDR (High Dynamic Range, high dynamic range imaging), high-resolution 4K (4K Resolution) video recording, etc.

[0221] In addition, the structures and configurations of the remaining elements of the sixth embodiment are the same as those of the fifth embodiment, and will not be further described herein.

[0222] <Seventh embodiment>

[0223] Please refer to FIG. 7A to FIG. 7C,in Fig. 7A A schematic diagram of a vehicle tool 70 according to a seventh embodiment of the present disclosure is shown. Figure 7B Draw according to Fig. 7A Another schematic diagram of the vehicle tool 70 in the seventh embodiment, Figure 7C Draw according to Fig. 7A Another schematic diagram of the vehicle tool 70 in the seventh embodiment. FIG. 7A to FIG. 7C It can be seen that the electronic device (not shown) is applied to the vehicle tool 70, and the electronic device includes an imaging lens module, and the imaging lens module includes an imaging lens 710. In the seventh embodiment, the number of the imaging lenses 710 is six, and the imaging lenses 710 are vehicle imaging lenses, and the imaging lenses 710 can be any imaging lens in the first to fourth embodiments, but the present disclosure is not limited thereto.

[0224] Depend on Fig. 7A and Figure 7B It can be seen that the two imaging lenses 710 are respectively located below the left and right rearview mirrors and are used to capture image information of a viewing angle θ. Specifically, the viewing angle θ can satisfy the following condition: 40 degrees < θ < 90 degrees. In this way, image information within the left and right lanes can be captured.

[0225] Depend on Figure 7B It can be seen that the other two of the imaging lenses 710 can be disposed in the space inside the vehicle tool 70. Specifically, the two imaging lenses 710 are disposed near the position of the interior rearview mirror and near the rear window, respectively. Furthermore, the imaging lenses 710 can be disposed on the non-mirror surface of the left and right rearview mirrors of the vehicle tool 70, respectively, but the present invention is not limited thereto.

[0226] Depend on Figure 7C It can be seen that two of the imaging lenses 710 can be set at the front and rear ends of the vehicle tool 70. The configuration of the imaging lenses 710 at the front and rear ends of the vehicle tool 70 and below the left and right rearview mirrors can help the driver obtain external space information outside the cockpit, such as external space information I1, I2, I3, and I4, but not limited to this. In this way, more viewing angles can be provided to reduce blind spots, thereby helping to improve driving safety. Furthermore, by setting the imaging lenses 710 around the vehicle tool 70, it is helpful to identify road condition information outside the vehicle tool 70, so as to help realize the function of automatic assisted driving.

[0227] Although the present invention has been disclosed as above by means of implementation modes and examples, they are not intended to limit the present invention. Any person having ordinary knowledge in the technical field may make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the definition of the attached claims.

Claims

1. An imaging lens, characterized in that: Include: a plurality of lens elements, the plurality of lens elements defining an optical axis; An optical path turning element, used to turn the optical axis, and the optical path turning element comprises: an optical surface, on which the imaging light of the imaging lens undergoes at least one total reflection; and A sheet-shaped shading element is disposed corresponding to the light path turning element, and the sheet-shaped shading element comprises: a first surface disposed facing the optical surface; a second surface disposed opposite to the first surface; and a microstructure layer, at least disposed on the first surface, the microstructure layer forming protrusions on the first surface; Wherein, at least a portion of the area between the microstructure layer and the optical surface has an air gap; Wherein, a surface of the microstructure layer is measured according to the ISO25178 standard, and the number of peak vertices per square millimeter of the microstructure layer is Ypd; the surface of the microstructure layer is measured according to the ISO25178 standard to obtain an equivalent straight line and a load area ratio curve, 0% to 100% of the equivalent straight line corresponds to the load area ratio curve to define a core height, and the portion of the load area ratio curve higher than the height of the core is a protruding peak portion, and the load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1, which satisfies the following conditions: 20000(1 / mm 2 )≤Ypd≤110000(1 / mm 2 );as well as 17%≤Ymr1≤45%.

2. The imaging lens according to claim 1, wherein: The surface of the microstructure layer is measured according to ISO25178 standard. The load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1, which satisfies the following conditions: 17%≤Ymr1≤25%.

3. The imaging lens according to claim 2, wherein: The average height of the protruding peak is Aph, which satisfies the following conditions: 2.0μm≤Aph≤40.1μm.

4. The imaging lens according to claim 3, wherein: The average height of the protruding peak is Aph, which satisfies the following conditions: 2.0μm≤Aph≤21.2μm.

5. The imaging lens according to claim 4, wherein: The average height of the protruding peak is Aph, which satisfies the following conditions: 5.4μm≤Aph≤19.2μm.

6. The imaging lens according to claim 5, wherein: The average height of the protruding peak is Aph, which satisfies the following conditions: 7.3μm≤Aph≤14.5μm.

7. The imaging lens according to claim 4, wherein: The surface of the microstructure layer is measured according to ISO25178 standard. The number of peaks of the microstructure layer that are greater than the height of the core and greater than 4 μm is Hpq, which satisfies the following conditions: 2≤Hpq≤400.

8. The imaging lens according to claim 7, wherein: The surface of the microstructure layer is measured according to ISO25178 standard. The number of peaks of the microstructure layer that are greater than the height of the core and greater than 4 μm is Hpq, which satisfies the following conditions: 40≤Hpq≤210.

9. The imaging lens according to claim 1, wherein: The height of the air gap is Ha, which satisfies the following conditions: 1μm <Ha<102μm。 10. The imaging lens according to claim 9, wherein: Also includes: An adhesive element is disposed on at least one of the first surface and the second surface, and the adhesive element forms the air gap in at least a portion of the area between the microstructure layer and the optical surface.

11. The imaging lens according to claim 9, wherein: The thickness of the sheet-like shading element is TL, which satisfies the following conditions: 10μm <TL<170μm。 12. The imaging lens according to claim 10, wherein: The thickness of the adhesive element is TA, which satisfies the following conditions: 3μm <TA<105μm。 13. The imaging lens according to claim 12, wherein: The thickness of the adhesive element as a whole varies by less than 10 μm.

14. The imaging lens according to claim 1, wherein: The sheet-like shading element further comprises: A nanostructure layer is disposed on the surface of the microstructure layer, and the nanostructure layer comprises a plurality of nanoparticles, wherein the plurality of nanoparticles are stacked and the number of the plurality of nanoparticles decreases in a direction away from the sheet-shaped shading element.

15. An imaging lens, characterized in that: Include: a plurality of lens elements, the plurality of lens elements defining an optical axis; An optical path turning element, used to turn the optical axis, and the optical path turning element comprises: an optical surface, on which the imaging light of the imaging lens undergoes at least one total reflection; and A sheet-shaped shading element is disposed corresponding to the light path turning element, and the sheet-shaped shading element comprises: a first surface disposed facing the optical surface; a second surface disposed opposite to the first surface; and a microstructure layer, at least disposed on the first surface, the microstructure layer forming protrusions on the first surface; Wherein, at least a portion of the area between the microstructure layer and the optical surface has an air gap; A surface of the microstructure layer is measured according to ISO25178 standard, and the number of peaks per square millimeter of the microstructure layer is Ypd, which satisfies the following conditions: 20000(1 / mm 2 )≤Ypd≤110000(1 / mm 2 ); The surface of the microstructure layer is measured according to the ISO25178 standard to obtain an equivalent straight line and a load area ratio curve, 0% to 100% of the equivalent straight line corresponds to the load area ratio curve to define a core height, the portion of the load area ratio curve higher than the core height is a protruding peak portion, and the average height of the protruding peak portion is Aph; the surface of the microstructure layer is measured according to the ISO25178 standard, the number of peak vertices of the microstructure layer greater than the core height and greater than 4μm is Hpq, and at least one of the following conditions is satisfied: 2.0μm≤Aph≤40.1μm; 2≤Hpq≤400.

16. The imaging lens according to claim 15, wherein: The average height of the protruding peak is Aph, which satisfies the following conditions: 2.0μm≤Aph≤21.2μm.

17. The imaging lens according to claim 16, wherein: The surface of the microstructure layer is measured according to ISO25178 standard, the number of peaks of the microstructure layer greater than the height of the core portion and greater than 4 μm is Hpq; the average height of the protruding peak portion is Aph, and at least one of the following conditions is satisfied: 2≤Hpq≤400; 5.4μm≤Aph≤19.2μm.

18. The imaging lens according to claim 17, wherein: The average height of the protruding peak portion is Aph; the number of peaks of the microstructure layer greater than the height of the core portion and greater than 4 μm is Hpq, and at least one of the following conditions is satisfied: 5.4μm≤Aph≤19.2μm; 40≤Hpq≤210.

19. The imaging lens according to claim 18, wherein: The surface of the microstructure layer is measured according to ISO25178 standard. The load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1, which satisfies the following conditions: 17%≤Ymr1≤30%; The number of peaks of the microstructure layer that are greater than the height of the core and greater than 4 μm is Hpq; the average height of the protruding peaks is Aph, and at least one of the following conditions is satisfied: 40≤Hpq≤210; 7.3μm≤Aph≤14.5μm.

20. The imaging lens according to claim 19, wherein: The load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1; the average height of the protruding peak portion is Aph; the number of peak vertices of the microstructure layer that is greater than the height of the core portion and greater than 4 μm is Hpq, which simultaneously satisfies the following conditions: 17%≤Ymr1≤25%; 7.3 μm ≤ Aph ≤ 14.5 μm; and 40≤Hpq≤210.

21. The imaging lens according to claim 15, wherein: The height of the air gap is Ha, which satisfies the following conditions: 1μm <Ha<102μm。 22. The imaging lens according to claim 21, wherein: Also includes: An adhesive element is disposed on at least one of the first surface and the second surface, and the adhesive element forms the air gap in at least a portion of the area between the microstructure layer and the optical surface.

23. The imaging lens according to claim 21, wherein: The thickness of the sheet-like shading element is TL, which satisfies the following conditions: 10μm <TL<170μm。 24. The imaging lens according to claim 22, wherein: The thickness of the adhesive element is TA, which satisfies the following conditions: 3μm <TA<105μm。 25. The imaging lens according to claim 24, wherein: The thickness of the adhesive element as a whole varies by less than 10 μm.

26. The imaging lens according to claim 15, wherein: The sheet-like shading element further comprises: A nanostructure layer is disposed on the surface of the microstructure layer, and the nanostructure layer comprises a plurality of nanoparticles, wherein the plurality of nanoparticles are stacked and the number of the plurality of nanoparticles decreases in a direction away from the sheet-shaped shading element.

27. An imaging lens, characterized in that: Include: an optical element; and A sheet-shaped shading element is arranged corresponding to the optical element, and the sheet-shaped shading element comprises: a first surface disposed facing the optical element; a second surface disposed opposite to the first surface; and a microstructure layer, at least disposed on the first surface, the microstructure layer forming protrusions on the first surface; Wherein, at least a portion of the area between the microstructure layer and the optical element has an air gap; Wherein, a surface of the microstructure layer is measured according to the ISO25178 standard, and the number of peak vertices per square millimeter of the microstructure layer is Ypd; the surface of the microstructure layer is measured according to the ISO25178 standard to obtain an equivalent straight line and a load area ratio curve, 0% to 100% of the equivalent straight line corresponds to the load area ratio curve to define a core height, and the portion of the load area ratio curve higher than the height of the core is a protruding peak portion, and the load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1, which satisfies the following conditions: 20000(1 / mm 2 )≤Ypd≤110000(1 / mm 2 );as well as 17%≤Ymr1≤45%.

28. The imaging lens according to claim 27, wherein: The surface of the microstructure layer is measured according to ISO25178 standard. The load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1, which satisfies the following conditions: 17%≤Ymr1≤25%.

29. The imaging lens according to claim 28, wherein: The average height of the protruding peak is Aph, which satisfies the following conditions: 2.0μm≤Aph≤21.2μm.

30. The imaging lens according to claim 29, wherein: The average height of the protruding peak is Aph, which satisfies the following conditions: 5.4μm≤Aph≤19.2μm.

31. The imaging lens according to claim 30, wherein: The average height of the protruding peak is Aph, which satisfies the following conditions: 7.3μm≤Aph≤14.5μm.

32. The imaging lens according to claim 29, wherein: The surface of the microstructure layer is measured according to ISO25178 standard. The number of peaks of the microstructure layer that are greater than the height of the core and greater than 4 μm is Hpq, which satisfies the following conditions: 2≤Hpq≤400.

33. The imaging lens according to claim 32, wherein: The surface of the microstructure layer is measured according to ISO25178 standard. The number of peaks of the microstructure layer that are greater than the height of the core and greater than 4 μm is Hpq, which satisfies the following conditions: 40≤Hpq≤210.

34. The imaging lens according to claim 27, wherein: The height of the air gap is Ha, which satisfies the following conditions: 1μm <Ha<102μm。 35. The imaging lens according to claim 34, wherein: Also includes: An adhesive element is disposed on at least one of the first surface and the second surface, and the adhesive element forms the air gap in at least a portion of the area between the microstructure layer and the optical element.

36. The imaging lens according to claim 34, wherein: The thickness of the sheet-like shading element is TL, which satisfies the following conditions: 10μm <TL<170μm。 37. The imaging lens according to claim 35, wherein: The thickness of the adhesive element is TA, which satisfies the following conditions: 3μm <TA<105μm。 38. The imaging lens according to claim 37, wherein: The thickness of the adhesive element as a whole varies by less than 10 μm.

39. The imaging lens according to claim 27, wherein: The first surface includes a plane portion, the plane portion is smoother than other areas of the first surface, and the plane portion is in physical contact with the optical element.

40. The imaging lens according to claim 27, wherein: The sheet-like shading element further comprises: A nanostructure layer is disposed on the surface of the microstructure layer, and the nanostructure layer comprises a plurality of nanoparticles, wherein the plurality of nanoparticles are stacked and the number of the plurality of nanoparticles decreases in a direction away from the sheet-shaped shading element.

41. An imaging lens, characterized in that: Include: an optical element; and A sheet-shaped shading element is arranged corresponding to the optical element, and the sheet-shaped shading element comprises: a first surface disposed facing the optical element; a second surface disposed opposite to the first surface; and a microstructure layer, at least disposed on the first surface, the microstructure layer forming protrusions on the first surface; Wherein, at least a portion of the area between the microstructure layer and the optical element has an air gap; A surface of the microstructure layer is measured according to ISO25178 standard, and the number of peaks per square millimeter of the microstructure layer is Ypd, which satisfies the following conditions: 20000(1 / mm 2 )≤Ypd≤110000(1 / mm 2 ); The surface of the microstructure layer is measured according to the ISO25178 standard to obtain an equivalent straight line and a load area ratio curve, 0% to 100% of the equivalent straight line corresponds to the load area ratio curve to define a core height, the portion of the load area ratio curve higher than the core height is a protruding peak portion, and the average height of the protruding peak portion is Aph; the surface of the microstructure layer is measured according to the ISO25178 standard, the number of peak vertices of the microstructure layer greater than the core height and greater than 4μm is Hpq, and at least one of the following conditions is satisfied: 2.0μm≤Aph≤40.1μm; 2≤Hpq≤400.

42. The imaging lens according to claim 41, wherein: The average height of the protruding peak is Aph, which satisfies the following conditions: 2.0μm≤Aph≤21.2μm.

43. The imaging lens according to claim 42, wherein: The surface of the microstructure layer is measured according to ISO25178 standard, the number of peaks of the microstructure layer greater than the height of the core portion and greater than 4 μm is Hpq; the average height of the protruding peak portion is Aph, and at least one of the following conditions is satisfied: 2≤Hpq≤400; 5.4μm≤Aph≤19.2μm.

44. The imaging lens according to claim 43, wherein: The average height of the protruding peak portion is Aph; the number of peaks of the microstructure layer greater than the height of the core portion and greater than 4 μm is Hpq, and at least one of the following conditions is satisfied: 5.4μm≤Aph≤19.2μm; 40≤Hpq≤210.

45. The imaging lens according to claim 44, wherein: The surface of the microstructure layer is measured according to ISO25178 standard. The load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1, which satisfies the following conditions: 17%≤Ymr1≤30%; The number of peaks of the microstructure layer that are greater than the height of the core and greater than 4 μm is Hpq; the average height of the protruding peaks is Aph, and at least one of the following conditions is satisfied: 40≤Hpq≤210; 7.3μm≤Aph≤14.5μm.

46. ​​The imaging lens according to claim 45, wherein: The load area ratio separating the core portion and the protruding peak portion in the load area ratio curve is Ymr1; the average height of the protruding peak portion is Aph; the number of peak vertices of the microstructure layer that is greater than the height of the core portion and greater than 4 μm is Hpq, which simultaneously satisfies the following conditions: 17%≤Ymr1≤25%; 7.3 μm ≤ Aph ≤ 14.5 μm; and 40≤Hpq≤210.

47. The imaging lens according to claim 41, wherein: The height of the air gap is Ha, which satisfies the following conditions: 1μm <Ha<102μm。 48. The imaging lens according to claim 47, wherein: Also includes: An adhesive element is disposed on at least one of the first surface and the second surface, and the adhesive element forms the air gap in at least a portion of the area between the microstructure layer and the optical element.

49. The imaging lens according to claim 47, wherein: The thickness of the sheet-like shading element is TL, which satisfies the following conditions: 10μm <TL<170μm。 50. The imaging lens according to claim 48, wherein: The thickness of the adhesive element is TA, which satisfies the following conditions: 3μm <TA<105μm。 51. The imaging lens according to claim 50, wherein: The thickness of the adhesive element as a whole varies by less than 10 μm.

52. The imaging lens of claim 41, wherein: The first surface includes a plane portion, the plane portion is smoother than other areas of the first surface, and the plane portion is in physical contact with the optical element.

53. The imaging lens of claim 41, wherein: The sheet-like shading element further comprises: A nanostructure layer is disposed on the surface of the microstructure layer, and the nanostructure layer comprises a plurality of nanoparticles, wherein the plurality of nanoparticles are stacked and the number of the plurality of nanoparticles decreases in a direction away from the sheet-shaped shading element.

54. An imaging lens module, characterized in that: Include: The imaging lens of claim 1, 15, 27 or 41; and An electronic photosensitive element is disposed on an imaging surface of the imaging lens module and is used for receiving imaging light of the imaging lens.

55. An electronic device, characterized in that: Include: An imaging lens module as claimed in claim 54.

Images