Imaging lens, imaging lens module and electronic device

Abstract

The utility model 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 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, tablet computers, etc., which have flooded into modern people's lives. The imaging lens modules and their imaging lenses mounted on portable electronic devices have also developed vigorously. However, with the increasing progress of technology, users' requirements for the quality of imaging lenses are getting higher and higher. Therefore, developing an imaging lens that can block stray light has become an important and urgent problem in the industry. Summary of the Utility Model

[0003] The present disclosure provides an imaging lens, an imaging lens module, and an electronic device. By the combination of an air gap and specific surface properties, it is helpful to block stray light to prevent the stray light from being reflected back to the optical path turning element or the optical element.

[0004] According to an embodiment of the present disclosure, an imaging lens includes a plurality of lens elements, an optical path turning element, and a sheet-shaped light-shielding element. The lens elements define an optical axis. The optical path turning element is used to turn the optical axis, and the optical path turning element includes an optical surface, where at least one total reflection of the imaging light of the imaging lens occurs on the optical surface. The sheet-shaped light-shielding element is correspondingly arranged with the optical path turning element, and the sheet-shaped light-shielding element includes a first surface, a second surface, and a microstructure layer. The first surface faces the optical surface. The second surface is opposite to the first surface. The microstructure layer is at least provided on the first surface, and the microstructure layer forms protrusions on the first surface. There is an air gap in at least a part of the region between the microstructure layer and the optical surface. Let one surface of the microstructure layer be measured according to the ISO25178 standard, and the number of peak vertices per square millimeter of the microstructure layer is Ypd; let the surface of the microstructure layer be 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 height of a core part defined by the load area ratio curve. The part of the load area ratio curve higher than the height of the core part is a protruding peak part. The load area ratio that separates the core part from the protruding peak part 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] For the imaging lens according to the embodiment described in the previous paragraph, when the surface of the microstructured layer is measured according to the ISO 25178 standard, the load area ratio that separates the core part and the protruding peak part in the load area ratio curve is Ymr1, which can satisfy the following condition: 17% ≤ Ymr1 ≤ 25%.

[0006] For the imaging lens according to the embodiment described in the previous paragraph, wherein the average height of the protruding peak part is Aph, which can satisfy the following conditions: 2.0 μm ≤ Aph ≤ 40.1 μm. Additionally, it can satisfy the following conditions: 2.0 μm ≤ Aph ≤ 21.2 μm. Additionally, it can satisfy the following conditions: 5.4 μm ≤ Aph ≤ 19.2 μm. Additionally, it can satisfy the following conditions: 7.3 μm ≤ Aph ≤ 14.5 μm.

[0007] For the imaging lens according to the embodiment described in the previous paragraph, when the surface of the microstructured layer is measured according to the ISO 25178 standard, the number of peak vertices of the microstructured layer that are higher than the core part and higher than 4 μm is Hpq, which can satisfy the following conditions: 2 ≤ Hpq ≤ 400. Additionally, it can satisfy the following conditions: 40 ≤ Hpq ≤ 210.

[0008] For the imaging lens according to the embodiment described in the previous paragraph, wherein the height of the air gap is Ha, which can satisfy the following condition: 1 μm < Ha < 102 μm.

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

[0010] For the imaging lens according to the embodiment described in the previous paragraph, wherein the thickness of the sheet-shaped light-shielding element is TL, which can satisfy the following condition: 10 μm < TL < 170 μm.

[0011] For the imaging lens according to the embodiment described in the previous paragraph, wherein the thickness of the viscous element is TA, which can satisfy the following condition: 3 μm < TA < 105 μm.

[0012] For the imaging lens according to the embodiment described in the previous paragraph, the overall thickness difference of the viscous element can be less than 10 μm.

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

[0014] According to an embodiment of the present disclosure, an imaging lens is provided, which includes a plurality of lens elements, an optical path turning element, and a sheet-shaped light shielding element. The lens elements define an optical axis. The optical path turning element is used to turn the optical axis, and the optical path turning element includes an optical surface, where the imaging light of the imaging lens undergoes at least one total reflection on the optical surface. The sheet-shaped light shielding element is correspondingly arranged with the optical path turning element, and the sheet-shaped light shielding element includes a first surface, a second surface, and a microstructure layer. The first surface faces the optical surface. The second surface is arranged opposite to the first surface. The microstructure layer is at least arranged on the first surface, and the microstructure layer forms protrusions on the first surface. There is an air gap in at least a part of the region between the microstructure layer and the optical surface. When a surface of the microstructure layer is measured according to the ISO25178 standard, 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 ). When the surface of the microstructure layer is measured according to the ISO25178 standard, an equivalent straight line and a load area ratio curve are obtained. The 0% to 100% of the equivalent straight line corresponds to the height of a core part defined by the load area ratio curve. The part of the load area ratio curve higher than the height of the core part is a protruding peak part, and the average height of the protruding peak part is Aph; when 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 part 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.

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

[0016] For the imaging lens according to the embodiment described in the previous paragraph, when 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 part and greater than 4 μm is Hpq; the average height of the protruding peak part is Aph, and 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.

[0017] An imaging lens according to the embodiment described in the previous paragraph, wherein the surface of the microstructure layer is measured according to the ISO25178 standard, and the load area ratio Ymr1 that separates the core part and the protruding peak part in the load area ratio curve satisfies the following conditions: 17% ≤ Ymr1 ≤ 30%. The number of peak vertices of the microstructure layer that are higher than the core part and higher than 4 μm 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; 7.3 μm ≤ Aph ≤ 14.5 μm.

[0018] An imaging lens according to the embodiment described in the previous paragraph, wherein the load area ratio Ymr1 that separates the core part and the protruding peak part in the load area ratio curve; the average height of the protruding peak part is Aph; the number of peak vertices of the microstructure layer that are higher than the core part and higher 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] An imaging lens according to the embodiment described in the previous paragraph, wherein the height of the air gap is Ha, which satisfies the following conditions: 1 μm < Ha < 102 μm.

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

[0021] An imaging lens according to the embodiment described in the previous paragraph, wherein the thickness of the sheet-shaped light-shielding element is TL, which satisfies the following conditions: 10 μm < TL < 170 μm.

[0022] An imaging lens according to the embodiment described in the previous paragraph, wherein the thickness of the viscous element is TA, which satisfies the following conditions: 3 μm < TA < 105 μm.

[0023] An imaging lens according to the embodiment described in the previous paragraph, wherein the overall thickness difference of the viscous element is less than 10 μm.

[0024] An imaging lens according to the embodiment described in the previous paragraph, wherein the sheet-shaped light-shielding 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 nanoparticles decreases in a direction away from the sheet-shaped light-shielding element.

[0025] According to an embodiment of the present disclosure, an imaging lens is provided, which includes an optical element and a sheet-shaped light-shielding element. The sheet-shaped light-shielding element is disposed corresponding to the optical element, and the sheet-shaped light-shielding element includes a first surface, a second surface, and a microstructure layer. The first surface faces the optical element. The second surface is disposed opposite to the first surface. The microstructure layer is at least disposed on the first surface, and the microstructure layer forms protrusions on the first surface. There is an air gap in at least a part of the region between the microstructure layer and the optical element. Measuring one surface of the microstructure layer according to the ISO25178 standard, the number of peak vertices per square millimeter of the microstructure layer is Ypd; measuring the surface of the microstructure layer according to the ISO25178 standard, an equivalent straight line and a load area ratio curve are obtained. The 0% to 100% of the equivalent straight line corresponds to the height of a core part defined by the load area ratio curve. The part of the load area ratio curve higher than the height of the core part is a protruding peak part. The load area ratio separating the core part and the protruding peak part 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] For the imaging lens according to the embodiment described in the previous paragraph, wherein measuring the surface of the microstructure layer 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 satisfy the following conditions: 17% ≤ Ymr1 ≤ 25%.

[0027] For the imaging lens according to the embodiment described in the previous paragraph, wherein the average height of the protruding peak part is Aph, which can satisfy the following conditions: 2.0 μm ≤ Aph ≤ 21.2 μm. Additionally, it can satisfy the following conditions: 5.4 μm ≤ Aph ≤ 19.2 μm. Additionally, it can satisfy the following conditions: 7.3 μm ≤ Aph ≤ 14.5 μm.

[0028] For the imaging lens according to the embodiment described in the previous paragraph, wherein measuring the surface of the microstructure layer according to the ISO25178 standard, the number of peak vertices of the microstructure layer greater than the height of the core part and greater than 4 μm is Hpq, which can satisfy the following conditions: 2 ≤ Hpq ≤ 400. Additionally, it can satisfy the following conditions: 40 ≤ Hpq ≤ 210.

[0029] For the imaging lens according to the embodiment described in the previous paragraph, wherein the height of the air gap is Ha, which can satisfy the following conditions: 1 μm < Ha < 102 μm.

[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 part of the region between the microstructure layer and the optical element.

[0031] An imaging lens according to the embodiment described in the previous paragraph, wherein the thickness of the sheet-shaped light-shielding element is TL, which can satisfy the following conditions: 10 μm < TL < 170 μm.

[0032] An imaging lens according to the embodiment described in the previous paragraph, wherein the thickness of the adhesive element is TA, which can satisfy the following conditions: 3 μm < TA < 105 μm.

[0033] An imaging lens according to the embodiment described in the previous paragraph, wherein the overall thickness difference of the adhesive element can be less than 10 μm.

[0034] An imaging lens according to the embodiment described in the previous paragraph, wherein the first surface may include a flat portion, the flat portion is smoother than other regions of the first surface, and the flat portion is in physical contact with the optical element.

[0035] An imaging lens according to the embodiment described in the previous paragraph, wherein the sheet-shaped light-shielding 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 nanoparticles decreases in a direction away from the sheet-shaped light-shielding element.

[0036] An imaging lens is provided according to an embodiment of the present disclosure, including an optical element and a sheet-shaped light-shielding element. The sheet-shaped light-shielding element is disposed corresponding to the optical element, and the sheet-shaped light-shielding element includes a first surface, a second surface, and a microstructure layer. The first surface faces the optical element. The second surface is disposed opposite to the first surface. The microstructure layer is disposed at least on the first surface, and the microstructure layer forms protrusions on the first surface. There is an air gap in at least a part of the region between the microstructure layer and the optical element. Let a surface of the microstructure layer be 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 ). Let the surface of the microstructure layer be 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 height of a core part defined by the load area ratio curve. The part of the load area ratio curve higher than the height of the core part is a protruding peak part, and the average height of the protruding peak part is Aph; Let the surface of the microstructure layer be measured according to the ISO25178 standard, and the number of peak vertices of the microstructure layer greater than the height of the core part and greater than 4 μm is Hpq. At least one of the following conditions is satisfied: 2.0 μm ≤ Aph ≤ 40.1 μm; 2 ≤ Hpq ≤ 400.

[0037] An imaging lens according to the embodiment described in the previous paragraph, wherein the average height of the protruding peak portion is Aph, which can satisfy the following conditions: 2.0 μm ≤ Aph ≤ 21.2 μm.

[0038] An imaging lens according to the embodiment described in the previous paragraph, wherein the surface of the microstructured layer is measured according to the ISO 25178 standard, and the number of peak vertices of the microstructured layer that are higher than the core portion and higher 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; 5.4 μm ≤ Aph ≤ 19.2 μm. Additionally, at least one of the following conditions is satisfied: 5.4 μm ≤ Aph ≤ 19.2 μm; 40 ≤ Hpq ≤ 210.

[0039] An imaging lens according to the embodiment described in the previous paragraph, wherein the load area ratio curve that separates the core portion and the protruding peak portion of the microstructured layer is Ymr1, which satisfies the following conditions: 17% ≤ Ymr1 ≤ 30%. The number of peak vertices of the microstructured layer that are higher than the core portion and higher 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: 40 ≤ Hpq ≤ 210; 7.3 μm ≤ Aph ≤ 14.5 μm.

[0040] An imaging lens according to the embodiment described in the previous paragraph, wherein the load area ratio curve that separates the core portion and the protruding peak portion is Ymr1; the average height of the protruding peak portion is Aph; the number of peak vertices of the microstructured layer that are higher than the core portion and higher 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] An imaging lens according to the embodiment described in the previous paragraph, wherein the height of the air gap is Ha, which can satisfy the following conditions: 1 μm < Ha < 102 μm.

[0042] An imaging lens according to the embodiment described in the previous paragraph may further include a viscous element, wherein the viscous element is disposed on at least one of the first surface and the second surface, and the viscous element forms an air gap in at least a partial region between the microstructured layer and the optical element.

[0043] An imaging lens according to the embodiment described in the previous paragraph, wherein the thickness of the sheet-shaped light-shielding element is TL, which can satisfy the following conditions: 10 μm < TL < 170 μm.

[0044] An imaging lens according to the embodiment described in the previous paragraph, wherein the thickness of the viscous element is TA, which can satisfy the following conditions: 3 μm < TA < 105 μm.

[0045] An imaging lens according to the embodiment described in the previous paragraph, wherein the overall thickness difference of the viscous element can be less than 10 μm.

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

[0047] An imaging lens according to the embodiment described in the previous paragraph, wherein the sheet-shaped light-shielding 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 nanoparticles decreases in a direction away from the sheet-shaped light-shielding element.

[0048] An imaging lens module according to an embodiment of the present disclosure includes an imaging lens as described in the foregoing embodiments and an electronic photosensitive element. The electronic photosensitive element is disposed on an imaging surface of the imaging lens module, and the electronic photosensitive element is configured to receive imaging light of the imaging lens.

[0049] An electronic device according to an embodiment of the present disclosure includes an imaging lens module as described in the foregoing embodiments. Description of the Drawings

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

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

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

[0053] Figure 1D Shown in accordance with Figure 1A A schematic diagram of the sheet-shaped light-shielding element according to the first embodiment;

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

[0055] Figure 1F Shown in accordance with Figure 1E A cross-sectional schematic diagram of the sheet-shaped light-shielding element according to the first embodiment;

[0056] Figure 1G Shown in accordance with Figure 1F A cross-sectional schematic diagram of the nanostructure layer according to the first embodiment;

[0057] Figure 2ASchematic diagram showing an imaging lens module according to the second embodiment of the present disclosure;

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

[0059] Figure 2C Showing according to Figure 2B Cross-sectional schematic diagram of the sheet-shaped light-shielding element in the second embodiment;

[0060] Figure 2D Showing according to Figure 2A Installation schematic diagram of the fixing ring and the sheet-shaped light-shielding element in the second embodiment;

[0061] Figure 2E Showing according to Figure 2A Schematic diagram of the fixing ring and the sheet-shaped light-shielding element in the second embodiment;

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

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

[0064] Figure 3C Showing according to Figure 3B Cross-sectional schematic diagram of the sheet-shaped light-shielding element in the third embodiment;

[0065] Figure 3D Showing according to Figure 3A Partial cross-sectional view of the imaging lens in the third embodiment;

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

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

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

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

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

[0071] Figure 4E Showing a schematic diagram of a sheet-shaped light-shielding element according to Figure 4C the fourth embodiment;

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

[0073] Figure 5B Showing a schematic diagram of an electronic device according to Figure 5A another schematic diagram of the electronic device according to the fifth embodiment;

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

[0075] Figure 5D Showing a schematic diagram of an electronic device according to Figure 5B another schematic diagram of an image captured by the electronic device according to the fifth embodiment;

[0076] Figure 5E Showing a schematic diagram of an electronic device according to Figure 5B another schematic diagram of an image captured by the electronic device according to the fifth embodiment;

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

[0078] Figure 7A Showing a schematic diagram of a vehicle tool according to the seventh embodiment of the present disclosure;

[0079] Figure 7B Showing a schematic diagram of a vehicle tool according to Figure 7A another schematic diagram of the vehicle tool according to the seventh embodiment; and

[0080] Figure 7C Showing a schematic diagram of a vehicle tool according to Figure 7A another schematic diagram of the vehicle tool according to the seventh embodiment.

[0081] [Symbol Description]

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

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

[0084] 100, 710: Imaging lens

[0085] 111, 211, 311: Lens element

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

[0087] 113, 213: Assembly element

[0088] 120, 220, 320, 420a, 420b, 420c: Sheet-like light-shielding 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: Fixing layer

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

[0094] 124, 224, 324: Coating layer

[0095] 125, 225, 325: Core material

[0096] 126: Nanostructure layer

[0097] 130, 230: Optical path turning element

[0098] 130a, 230a: Reflective surface

[0099] 131, 231: Optical surface

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

[0101] 214: Fixing ring

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

[0103] 450: Flat portion

[0104] 50, 60: Electronic device

[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 imaging lens

[0109] 525: Imaging signal processing element

[0110] 620: Flashlight module

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

[0112] 619: TOF module

[0113] 70: Vehicle tool

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

[0115] IMG: Imaging surface

[0116] L: Imaging light ray

[0117] P: Nanoparticle

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

[0119] θ: Viewing angle

[0120] Ha: Height of air gap

[0121] TA: Thickness of viscous element

[0122] TL: Thickness of sheet-shaped light-shielding element Detailed implementation manners

[0123] The present disclosure provides an imaging lens, which includes a sheet-shaped light-shielding element. The sheet-shaped light-shielding element includes a first surface, a second surface, and a microstructure layer. The second surface is disposed opposite to the first surface, and the microstructure layer is disposed at least on the first surface. The microstructure layer forms protrusions on the first surface. Let one surface of the microstructure layer be measured according to the ISO25178 standard. 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 ).

[0124] Thereby, by mixing micron particles into the microstructure layer, protrusions can be formed on the first surface, 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 regularly arranged or irregularly arranged, but are not limited thereto.

[0125] Furthermore, the calculation method of the individual value of Ypd can correspond to the peak vertex density (Spd) in ISO25178, which can roughly reflect the number of peak vertices on the surface of the microstructure layer per unit area and can also roughly reflect the thickness of the protrusion particles. When the conditions are satisfied, the number and thickness of the protrusion particles can be maintained in a moderate range. In addition, it can satisfy 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. Among them, the lens elements define an optical axis, and 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-shaped light-shielding element is arranged corresponding to the optical path turning element, the first surface is arranged facing the optical surface, and there is an air gap in at least part of the region between the microstructure layer and the optical surface. Since the optical surface easily allows stray light to escape from the optical path turning element, the combination of the air sandwich layer and the specific surface properties helps to block the stray light to prevent the stray light from reflecting back into the optical path turning element. Moreover, the material of the optical path turning element can be glass or plastic, but is not limited thereto.

[0127] Alternatively, the imaging lens may further include an optical element. Among them, the sheet-shaped light-shielding element is arranged corresponding to the optical element, the first surface is arranged facing the optical element, and there is an air gap in at least part of the region between the microstructure layer and the optical element. Specifically, the optical element can be an element applied to the imaging lens such as 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, etc., but is not limited thereto.

[0128] Measure the surface of the microstructure layer according to the ISO25178 standard to obtain an equivalent straight line and a bearing area ratio curve. The 0% to 100% of the equivalent straight line corresponds to the height of a core part defined by the bearing area ratio curve. The part of the bearing area ratio curve higher than the height of the core part is a protruding peak part. The bearing area ratio that separates the core part and the protruding peak part in the bearing area ratio curve is Ymr1, which can satisfy the following conditions: 17% ≤ Ymr1 ≤ 45%. Specifically, the calculation method of the individual value of Ymr1 can correspond to the bearing area ratio (Smr1) for separating the protruding peak part and the core part in ISO25178, which can roughly reflect the percentage of the area occupied by relatively high peaks in the total analysis area. Among them, the bearing area ratio curve is also called the Abbott-Firestone Curve or the Bearing Area Curve. In addition, it can satisfy the following conditions: 17% ≤ Ymr1 ≤ 30%. In addition, it can satisfy the following conditions: 17% ≤ Ymr1 ≤ 25%.

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

[0130] Furthermore, the calculation method of the individual value of Aph can correspond to the height of the protruding peak part (Spk) in ISO25178, which can roughly reflect the height difference between the relatively high protruding particles and other particles on the microstructure layer. When the value of Aph is high, it means that there are some protruding particles with a relatively high degree of protrusion on the microstructure layer, which helps to improve the interception efficiency of stray light. Moreover, the calculation method of the individual value of Hpq can be obtained by setting the measurement threshold of the instrument (greater than the height of the core part 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, it will cause the instrument to produce reading errors. 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 degree of protrusion on the microstructure layer. When Hpq is maintained at a moderate number, it helps to form a light trap structure and weaken the stray light in the light trap.

[0131] Specifically, the microstructure layer needs to comprehensively consider multiple surface parameters. For example, when one of the conditions is not satisfied, there is still a chance to make up for the ability to eliminate stray light by satisfying other conditions. And when more conditions are satisfied, it helps to improve its performance in eliminating stray light. According to the experiment speculation, the number of peak vertices, the height of the protrusion, and the density of the protrusion of the microstructure layer will all affect the ability to eliminate stray light. When the parameter conditions are maintained within a specific range, it helps to weaken the stray light in the air gap.

[0132] The imaging lens may further include a viscous element, where the viscous element is disposed on at least one of the first surface and the second surface, and the viscous element forms an air gap in at least a partial region between the microstructure layer and the optical surface or at least a partial region between the microstructure layer and the optical element. Thereby, the setting position of the sheet-shaped light-shielding element does not have to be limited by the mechanical design of adjacent optical elements, which helps to improve the design freedom of the imaging lens. Specifically, the viscous element is used to fix the sheet-shaped light-shielding element to other optical elements.

[0133] The sheet-shaped light-shielding element may further include a nanostructure layer, where the nanostructure layer is disposed on the surface of the microstructure layer, and the nanostructure layer includes a plurality of nanoparticles. Further, the nanoparticles are stacked, and the number of nanoparticles decreases in a direction away from the sheet-shaped light-shielding element. Thereby, it helps to maintain a low reflectivity while having a microstructure layer with a relatively large size. Specifically, the decreasing number of nanoparticles helps to form a gradient refractive index to reduce the reflectivity, and the above surface properties are more likely to generate a flat surface at the peaks of the microstructure layer to increase the reflectivity.

[0134] The first surface may include a planar portion, where the planar portion is smoother than other regions of the first surface, and the planar portion is in physical contact with the optical element. Thereby, it helps to improve the assembly accuracy. Specifically, the planar portion can be formed by controlling the setting range of the microstructure layer, or a part of the microstructure layer in a region can be compacted by a stamping process to form a smoother region.

[0135] The microstructure layer may further include a fixing layer, where the fixing layer coats the micron particles to fix the micron particles to the first surface, causing the first surface to form protrusions.

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

[0137] Let the surface of the microstructure layer be measured according to the ISO25178 standard. The number of peak vertices of the microstructure layer that are higher than the core portion and higher than 4 μm is Hpq, which may satisfy the following conditions: 2 ≤ Hpq ≤ 400. Additionally, it may satisfy the following conditions: 5 ≤ Hpq ≤ 300. Additionally, it may satisfy the following conditions: 40 ≤ Hpq ≤ 210.

[0138] Alternatively, the load area ratio separating 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 higher than the core part and higher 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. Through the air gap, contact between the microstructure layer and the optical surface can be avoided, 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 avoid bending of the sheet-shaped light-shielding element 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 a proper thickness can provide better adhesion.

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

[0143] Specifically, the parameters used in this disclosure are measured using VK-X3100. Among them, the measurement magnification of 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 of 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 of 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 of 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 value is calculated as the basis for conditional judgment.

[0144] Each technical feature in the imaging lens of the above disclosure can be combined and configured to achieve the corresponding effects.

[0145] The present disclosure provides an imaging lens module, including 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 the imaging light of the imaging lens.

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

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

[0148] <First Embodiment>

[0149] Please refer to Figure 1A , which shows a schematic diagram of the imaging lens module 10 according to the first embodiment of the present disclosure. As can be seen from Figure 1A , the imaging lens module 10 includes an imaging lens 100 (labeled in 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 shows an exploded view of the imaging lens 100 according to Figure 1A the first embodiment. As can be seen from Figure 1A and Figure 1B , 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. The lens elements 111 define an optical axis (not labeled in the figure). The sheet-shaped light-shielding element 120 and the optical path turning element 130 are correspondingly disposed, and the optical path turning element 130 is used to turn the optical axis. Specifically, the optical path is folded by the optical path turning element 130 to reduce 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] As can be seen from Figure 1A and Figure 1B , the imaging lens 100 may further include a lens barrel 112 and an assembly element 113. The lens barrel 112 is used to accommodate the lens elements 111 and the optical path turning element 130, and the assembly element 113 is used to fix the optical path turning element 130.

[0152] Please refer to Figures 1C to 1F , wherein Figure 1C shows Figure 1ASchematic diagram of the optical path turning element 130 and the sheet-shaped light-shielding element 120 in the first embodiment Figure 1D Illustrating in accordance with Figure 1A Schematic diagram of the sheet-shaped light-shielding element 120 in the first embodiment Figure 1E Illustrating in accordance with Figure 1A Schematic diagram of the optical path turning element 130 in the first embodiment Figure 1F Illustrating in accordance with Figure 1E Cross-sectional schematic diagram of the sheet-shaped light-shielding element 120 in the first embodiment. It can be seen from Figure 1A , Figure 1C , Figure 1D , Figure 1E and Figure 1F that the optical path turning element 130 includes an optical surface 131, where the imaging light L of the imaging lens 100 undergoes at least one total internal reflection 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. The first surface 121 faces the optical surface 131, the second surface 122 is disposed opposite to the first surface 121, the microstructure layer 123 is disposed on the first surface 121, the microstructure layer 123 forms protrusions on the first surface 121, and there is an air gap G in at least a part of the region between the microstructure layer 123 and the optical surface 131.

[0153] Specifically, the optical surface 131 is likely to allow stray light to escape from the optical path turning element 130. Through the combination of the air gap G and specific surface properties, it helps to block the stray light to prevent the stray light from reflecting back into the optical path turning element 130. Furthermore, through the air gap G, contact between the microstructure layer 123 and the optical surface 131 can be avoided, 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 attenuated in the air gap G.

[0154] It can be seen from Figures 1C to 1E that the imaging lens 100 may further include an adhesive element 140, where 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 part of the region between the microstructure layer 123 and the optical surface 131. Thereby, the setting position of the sheet-shaped light-shielding element 120 does not have to be limited by the mechanical design of adjacent optical elements (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-shaped 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] It can be seen from Figure 1EIt can be known that the optical path turning element 130 has three reflecting surfaces 130a, where two of the reflecting surfaces 130a reflect light through coating, and the other one of the reflecting surfaces 130a reflects light through the principle of total internal reflection.

[0156] It can be known from Figure 1F that the sheet-shaped light-shielding element 120 may further include two coating layers 124 and a core material 125, where the core material 125 is disposed between the coating layers 124, and the coating layers 124 are respectively connected to the first surface 121 and the second surface 122.

[0157] Please refer to Figure 1G , which shows a cross-sectional schematic diagram of the nanostructure layer 126 in accordance with Figure 1F the first embodiment. It can be known from Figure 1F and Figure 1G that the sheet-shaped light-shielding element 120 may further include a nanostructure layer 126, where the nanostructure layer 126 is disposed on the surface of the microstructure layer 123, and the nanostructure layer 126 includes a plurality of nanoparticle P, where the nanoparticle P are stacked, and the number of the nanoparticle P decreases in a direction away from the sheet-shaped light-shielding element 120. Thereby, it is helpful to maintain a low reflectivity while having a microstructure layer with a relatively large size. Specifically, the decreasing number of the nanoparticle P helps to form a gradient refractive index to reduce the reflectivity.

[0158] It can be known from Figure 1G that the microstructure layer 123 may further include a fixing layer 123a, where the protrusions of the microstructure layer 123 are 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, by mixing the micron particles 123b in the microstructure layer 123, the first surface 121 can be formed with protrusions, and micron particles 123b with various particle sizes can be used to adjust the surface properties, where the protrusions can be spherical or conical, the material of the micron particles 123b can be silicon oxide, titanium oxide, carbon black or acrylic resin, and the protrusions can be regularly arranged or irregularly arranged, but not limited thereto.

[0159] It can be known from Figure 1E 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 below. Furthermore, the overall thickness difference of the adhesive element 140 can be less than 10 μm.

[0160]

[0161] Furthermore, measure one surface of the microstructure layer 123 according to the ISO25178 standard. The number of peak vertices per square millimeter of the microstructure layer 123 is Ypd. Measure the surface of the microstructure layer 123 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 height of a core part defined by the load area ratio curve. The part of the load area ratio curve higher than the height of the core part is a protruding peak part. 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. Measure the surface of the microstructure layer 123 according to the ISO25178 standard. The number of peak vertices of the microstructure layer 123 that is greater than the height of the core part and greater than 4 μm is Hpq. The parameters satisfy the conditions in 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 noted that Figure 1C and Figure 1D the dot distribution range in is the distribution range of the microstructure layer 123, and Figures 1E to 1G in, for the convenience of showing the configuration situation, the element thickness, structure size, and structure shape are not drawn exactly according to the actual ratio.

[0165] <Second Embodiment>

[0166] Please refer to Figure 2A which shows a schematic diagram of the imaging lens module 20 according to the second embodiment of the present disclosure. As can be seen from Figure 2A the imaging lens module 20 includes an imaging lens (not shown) and an electronic photosensitive element 21. 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 the 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. The lens elements 211 define an optical axis (not shown). The sheet-shaped light-shielding element 220 and the optical path turning element 230 are correspondingly disposed, 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 to reduce the volume of the imaging lens.

[0168] The optical path turning element 230 has three reflecting surfaces 230a. Two of the reflecting surfaces 230a reflect light through coating, and the other reflecting surface 230a reflects light through the principle of total internal reflection.

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

[0170] Please refer to Figure 2B and Figure 2C , wherein Figure 2B illustrates a partially enlarged view of the imaging lens module 20 according to Figure 2A the second embodiment, Figure 2C illustrates a cross-sectional schematic view of the sheet-shaped light shielding element 220 according to Figure 2B the second embodiment. As can be seen from Figures 2A to 2C , the optical path turning element 230 includes an optical surface 231, and at least one total internal reflection of the imaging light L of the imaging lens occurs 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. The first surface 221 is disposed facing the optical surface 231, the second surface 222 is disposed opposite to the first surface 221, the microstructure layer 223 is disposed on the first surface 221, the microstructure layer 223 forms protrusions on the first surface 221, and at least a partial region between the microstructure layer 223 and the optical surface 231 has an air gap G.

[0171] Specifically, the optical surface 231 is likely to allow stray light to escape from the optical path turning element 230. Through the combination of the air gap G and specific surface properties, it helps to block the stray light to prevent the stray light from reflecting back into the optical path turning element 230. Furthermore, through the air gap G, contact between the microstructure layer 223 and the optical surface 231 can be avoided, thereby reducing damage to the microstructure layer 223, and the stray light can interact with the microstructure layer 223 in the air gap G, weakening the stray light in the air gap G.

[0172] Please refer to Figure 2D and Figure 2E , wherein Figure 2D illustrates an installation schematic diagram of the fixing ring 214 and the sheet-shaped light shielding element 220 according to Figure 2A the second embodiment, Figure 2E illustrates a schematic diagram of the fixing ring 214 and the sheet-shaped light shielding element 220 according to Figure 2A the second embodiment. As can be seen from Figure 2B , Figure 2D and Figure 2EIt can be known that the imaging lens may further include a viscous element 240, and the viscous element 240 is disposed on the second surface 222. Thereby, the setting position of the sheet-shaped light-shielding element 220 does not have 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 viscous element 240 is used to fix the sheet-shaped light-shielding element 220 on the fixing ring 214.

[0173] From Figure 2C It can be known that the sheet-shaped light-shielding element 220 may further include a coating layer 224 and a core material 225, wherein the core material 225 is disposed between the micro-structure layer 223 and the coating layer 224, and the coating layer 224 is connected to the second surface 222.

[0174] The protrusions of the micro-structure layer 223 can be formed by micron particles 223b, and the micron particles 223b are located on the first surface 221. Further, by mixing the micron particles 223b into the micro-structure layer 223, the first surface 221 can be formed with protrusions, and various particle sizes of micron particles 223b can be used to adjust the surface properties. The protrusions can be spherical or conical. The material of the micron particles 223b can be silicon oxide, titanium oxide, carbon black or acrylic resin, and the protrusions can be regularly arranged or irregularly arranged, but are not limited thereto.

[0175] From Figure 2B It can be known that the height of the air gap G is Ha, the thickness of the sheet-shaped light-shielding element 220 is TL, and the thickness of the viscous element 240 is TA, and 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 noted that Figure 2B And Figure 2C In order to conveniently illustrate the configuration situation, the element thickness, structure size, and structure shape are not drawn completely according to the actual ratio.

[0180] <Third Embodiment>

[0181] Please refer to Figure 3A , which shows a schematic diagram of the imaging lens module 30 according to the third embodiment of the present disclosure. From Figure 3AIt can be known that the imaging lens module 30 includes an imaging lens (not shown in the figure) and an electronic photosensitive element 31. 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 the imaging light L of the imaging lens.

[0182] Please refer to Figure 3B and Figure 3C , wherein Figure 3B shows a partially enlarged view of the imaging lens module 30 in accordance with Figure 3A the third embodiment, Figure 3C and shows a schematic cross-sectional view of the sheet-shaped light-shielding element 320 in accordance with Figure 3B the third embodiment. It can be known from Figures 3A to 3C that the imaging lens includes a plurality of lens elements 311, an optical element 313, and a sheet-shaped light-shielding element 320. The lens elements 311 define an optical axis (not shown in the figure), and the sheet-shaped light-shielding element 320 and the optical element 313 are correspondingly disposed. In the third embodiment, the optical element 313 is a spacer ring, and the 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 , wherein Figure 3D shows a partial cross-sectional view of the imaging lens in accordance with Figure 3A the third embodiment, Figure 3E and shows a partial exploded view of the imaging lens in accordance with Figure 3A the third embodiment. It can be known from Figure 3A , Figure 3D and Figure 3E that the imaging lens may further include a lens barrel 312, and the lens barrel 312 is used to accommodate the lens elements 311, the optical element 313, and the sheet-shaped light-shielding element 320.

[0184] It can be known from Figure 3B and Figure 3C that the sheet-shaped light-shielding element 320 includes a first surface 321, a second surface 322, and two microstructure layers 323. The first surface 321 faces the optical element 313, the second surface 322 is disposed opposite to the first surface 321, the microstructure layers 323 are disposed on the first surface 321 and the second surface 322, the microstructure layers 323 form protrusions on the first surface 321 and the second surface 322, and there is an air gap G in at least a part of the region between the microstructure layers 323 and the optical element 313.

[0185] It can be known from Figure 3B , Figure 3D and Figure 3EIt can be known that the imaging lens may further include an adhesive element 340, where 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 partial area between the microstructured layer 323 and the optical element 313. By means of the adhesive element 340, the setting position of the sheet-shaped light-shielding element 320 does not have to be limited by the mechanical 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-shaped light-shielding element 320 on the optical element 313.

[0186] It can be known from Figure 3C that the sheet-shaped light-shielding element 320 may further include a coating layer 324 and a core material 325, where the core material 325 is disposed between the microstructured layer 323 and the coating layer 324, and the coating layer 324 is connected to the first surface 321.

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

[0188] It can be known from Figure 3B that the height of the air gap G is Ha, the thickness of the sheet-shaped light-shielding element 320 is TL, and the thickness of the adhesive element 340 is TA, and 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 noted that Figure 3D and Figure 3E the dot distribution range in Figure 3B and Figure 3C is the distribution range of the microstructured layer 323, and for the convenience of showing the configuration in

[0192] <Fourth Embodiment>

[0193] Please refer to Figure 4A , which shows a schematic diagram of the imaging lens module 40 according to the fourth embodiment of the present disclosure. It can be known from Figure 4AIt can be known that the imaging lens module 40 includes an imaging lens (not shown in the figure) and an electronic photosensitive element 41. 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 the imaging light L of the imaging lens.

[0194] Please refer to Figures 4B to 4D , in which Figure 4B shows a partial enlarged view of the imaging lens module 40 according to Figure 4A the fourth embodiment, Figure 4C shows a partial enlarged view of the imaging lens module 40 according to Figure 4A another part of the fourth embodiment of the imaging lens module 40, Figure 4D shows a partial enlarged view of the imaging lens module 40 according to Figure 4A another part of the fourth embodiment of the imaging lens module 40. It can be known from Figures 4A to 4D that the imaging lens includes a plurality of optical elements 411a, 411b, 411c, 411d, 411e, 411f, 411g, 413 and a plurality of sheet-shaped light-shielding elements 420a, 420b, 420c. The sheet-shaped light-shielding element 420a is correspondingly disposed with the optical elements 411a, 411b, the sheet-shaped light-shielding element 420b is correspondingly disposed with the optical elements 411c, 411d, and the sheet-shaped light-shielding element 420c is correspondingly disposed with the optical elements 411g, 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, and the lens barrel 412 is used to accommodate the optical elements 411a, 411b, 411c, 411d, 411e, 411f, 411g, 413 and the sheet-shaped light-shielding elements 420a, 420b, 420c.

[0196] It can be known from Figure 4B that the sheet-shaped light-shielding element 420a includes a first surface 421a, a second surface 422a and a microstructure layer (not shown in the figure). The first surface 421a faces the optical element 411a, the second surface 422a is disposed opposite to the first surface 421a, the microstructure layer is at least disposed on the first surface 421a, the microstructure layer forms protrusions on the first surface 421a, and at least a part of the region 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, where 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 partial area between the microstructure layer and the optical element 411a. Through the adhesive element 440, the setting position of the sheet-shaped light-shielding element 420a does not have to be limited by the mechanism design of the adjacent optical element (i.e., the optical element 411a), which helps to improve the design freedom of the imaging lens. Specifically, the adhesive element 440 is used to fix the sheet-shaped light-shielding element 420a on the optical element 411a.

[0198] Please refer to Figure 4E , which shows a schematic diagram of the sheet-shaped light-shielding element 420b according to Figure 4C the fourth embodiment. As can be seen from Figure 4C and Figure 4E , the sheet-shaped light-shielding element 420b includes a first surface 421b, a second surface 422b, and a microstructure layer 423b, where the first surface 421b faces the optical element 411d, the second surface 422b is disposed opposite to the first surface 421b, the microstructure layer 423b is disposed at least on the first surface 421b, the microstructure layer 423b forms protrusions 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 between the optical elements 411c and 411d. Through the fitting and assembly between the optical elements 411c and 411d, an installation space can be formed between the optical elements 411c and 411d, so that when the sheet-shaped light-shielding element 420b is installed therein, an air gap G2 will be formed.

[0200] Furthermore, the first surface 421b may include a flat portion 450, where the flat portion 450 is smoother than other areas of the first surface 421b, the flat portion 450 is in physical contact with the optical element 411d, and Figure 4C the range of the flat portion 450 is indicated by a dotted line in

[0201] As can be seen from Figure 4DIt can be known that the sheet-shaped light-shielding element 420c includes a first surface 421c, a second surface 422c, and a microstructure layer (not shown in the figure). The first surface 421c faces the optical element 411g, the second surface 422c is disposed opposite to the first surface 421c, the microstructure layer is disposed at least on the first surface 421c, the microstructure layer forms protrusions on the first surface 421c, and there is an air gap G3 in at least a part of the region between the microstructure layer and the optical element 411g.

[0202] Specifically, when installed by the installation method in Figure 4D , it is loosely assembled, that is, the sheet-shaped light-shielding element 420c can slightly shake in the installation space, and the height of the air gap G3 will change with the change of the position of the sheet-shaped light-shielding element 420c.

[0203] It can be known from Figures 4B to 4D that the heights of the air gaps G1, G2, and G3 are Ha, the thicknesses of the sheet-shaped light-shielding elements 420a, 420b, and 420c are TL, and the thickness of the adhesive element 440 is TA, and the parameters satisfy 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 noted that Figure 4E the dot distribution range in Figures 4B to 4D is the distribution range of the microstructure layer 423b, and in

[0207] <Fifth Embodiment>

[0208] Please refer to Figure 5A and Figure 5B , where Figure 5A shows a schematic diagram of the electronic device 50 according to the fifth embodiment of the present disclosure, Figure 5B shows Figure 5A another schematic diagram of the electronic device 50 according to the fifth embodiment. It can be known from Figure 5A and Figure 5BIt can be known that the electronic device 50 is a smart phone. The electronic device 50 can 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. The electronic photosensitive element is disposed on an imaging surface of the imaging lens module, and the electronic photosensitive element is used to receive the imaging light of 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 can be any of the imaging lenses in the foregoing 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. The user interface 521 is used to display a picture and can be used to manually adjust the shooting angle to switch different imaging lenses. At this time, the imaging lens converges the imaging light on the electronic photosensitive element and outputs an electronic signal related to the image to an Image Signal Processor (ISP) 525.

[0210] It can be known from Figure 5B that according 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). Further, the electronic device 50 may further include at least one focusing assistance module (not labeled in the figure) and at least one sensing element (not shown in the figure). The focusing assistance module can be a flash module for compensating color temperature, an infrared ranging element, a laser focusing module, etc. The sensing element can have the function of sensing physical momentum and actuation energy, such as an accelerometer, a gyroscope, a Hall Effect Element, to sense the shaking and jitter applied by the user's hand or the external environment, thereby facilitating the automatic focusing function of the imaging lens configuration in the electronic device 50 and the performance of the optical image stabilization component, so as to obtain good imaging quality, and helping the electronic device 50 according to the present disclosure to have various shooting functions, such as optimized selfies, low-light HDR (High Dynamic Range) imaging, high-resolution 4K (4K Resolution) video recording, etc. In addition, the user can directly visually see the shooting picture of the camera through the user interface 521 and manually operate the viewing range on the user interface 521 to achieve the automatic focusing function of what you see is what you get.

[0211] Furthermore, the imaging lens, the optical image stabilization component, the sensing element, and the focus assist module can be disposed on a flexible printed circuit board (FPC) (not shown in the figure), and electrically connected to related components such as the imaging signal processing element 525 through a connector (not shown in the figure) to execute the shooting process. Current electronic devices such as smartphones tend to be thin and light. Configuring the imaging lens and related components on the flexible printed circuit board and then integrating the circuits to the main board of the electronic device using the connector can meet the mechanical design and circuit layout requirements of the limited space inside the electronic device and obtain a greater margin, and also enables the autofocus function of its imaging lens to be more flexibly controlled through the touch screen of the electronic device. In the fifth embodiment, the electronic device 50 can include a plurality of sensing elements and a plurality of focus assist modules. The sensing elements and the focus assist modules are disposed on the flexible printed circuit board and at least one other flexible printed circuit board (not shown in the figure), and are electrically connected to related components such as the imaging signal processing element 525 through corresponding connectors to execute the shooting process. In other embodiments (not shown in the figure), the sensing elements and the auxiliary optical elements can also be disposed on the main board of the electronic device or other forms of carrier boards according to the mechanical design and circuit layout requirements.

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

[0213] Figure 5C Illustrated in accordance with Figure 5B A schematic diagram of an image captured by the electronic device 50 in the fifth embodiment. As Figure 5C can be seen, a wider range of images can be captured with the ultra-wide-angle imaging lens 522, which has the function of accommodating more scenery.

[0214] Figure 5D Illustrated in accordance with Figure 5B Another schematic diagram of an image captured by the electronic device 50 in the fifth embodiment. As Figure 5D can be seen, images with a certain range and high pixels can be captured with the high-pixel imaging lens 523, which has the functions of high resolution and low distortion.

[0215] Figure 5E Illustrated in accordance with Figure 5B Another schematic diagram of an image captured by the electronic device 50 in the fifth embodiment. As Figure 5E can be seen, the telephoto imaging lens 524 has a high magnification function, and can capture distant images and magnify them to a high magnification.

[0216] As Figures 5C to 5EIt can be known that by using imaging lenses with different focal lengths for framing and combining with image processing technology, the zoom function can be achieved in the electronic device 50.

[0217] <Sixth Embodiment>

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

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

[0220] According 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). Further, the electronic device 60 may further include at least one focus assist module (not labeled in the figure) and at least one sensing element (not shown in the figure). The focus assist module can be a flash module 620 for compensating color temperature, an infrared distance measuring element, a laser focus module, etc. The sensing element can have the function of sensing physical momentum and actuation energy, such as an accelerometer, a gyroscope, a Hall Effect Element, to sense the shaking and jitter applied by the user's hand or the external environment, thereby facilitating the automatic focus function of the imaging lens configuration in the electronic device 60 and the performance of the optical image stabilization component, so as to obtain good imaging quality, and help the electronic device 60 according to the present disclosure to have various shooting functions, such as optimized selfies, low-light HDR (High Dynamic Range) imaging, high-resolution 4K (4K Resolution) video recording, etc.

[0221] In addition, the structures and configuration relationships of the remaining components in the sixth embodiment and the fifth embodiment are the same, and will not be described in detail herein.

[0222] <Seventh Embodiment>

[0223] Please refer to Figures 7A to 7C, wherein Figure 7A FIG. shows a schematic diagram of the vehicle tool 70 according to the seventh embodiment of the present disclosure. Figure 7B FIG. shows according to Figure 7A Another schematic diagram of the vehicle tool 70 in the seventh embodiment. Figure 7C FIG. shows according to Figure 7A Another schematic diagram of the vehicle tool 70 in the seventh embodiment. As can be seen from Figures 7A to 7C An electronic device (not shown in the figure) is applied to the vehicle tool 70. 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. The imaging lenses 710 are vehicle-mounted imaging lenses, and the imaging lenses 710 can be any one of the imaging lenses in the foregoing first to fourth embodiments, but the present disclosure is not limited thereto.

[0224] As can be seen from Figure 7A and Figure 7B two of the 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. Thereby, the image information within the range of the left and right adjacent lanes can be captured.

[0225] As can be seen from Figure 7B two of the imaging lenses 710 can be disposed in the space inside the vehicle tool 70. Specifically, the two imaging lenses 710 are respectively disposed at positions close to the interior rearview mirror and positions close to the rear window. Furthermore, the other two imaging lenses 710 can be respectively disposed on the non-mirror surfaces of the left and right rearview mirrors of the vehicle tool 70, but not limited thereto.

[0226] As can be seen from Figure 7C two more of the imaging lenses 710 can be disposed at the front end and the rear end positions of the vehicle tool 70. Among them, through the configuration of the imaging lenses 710 at the front end and the rear end of the vehicle tool 70 and below the left and right rearview mirrors, it helps the driver to obtain external space information outside the cockpit, such as external space information I1, I2, I3, I4, but not limited thereto. Thereby, more viewing angles can be provided to reduce blind spots, which in turn helps to improve driving safety. Furthermore, by disposing the imaging lenses 710 around the vehicle tool 70, it helps to identify the road condition information outside the vehicle tool 70, which helps to realize the function of automatic assisted driving.

[0227] Although the present utility model has been disclosed above in embodiments and examples, it is not intended to limit the present utility model. Any person having ordinary knowledge in the technical field can make some modifications and refinements without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to that defined by the appended 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 of 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 of 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 of 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 of 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 of 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