Imaging lens, camera module and electronic device

Abstract

The invention discloses an imaging lens which comprises a lens barrel element and an imaging lens group arranged on the lens barrel element. The imaging lens group includes, in order from an object side to an image side, a first imaging lens element, a spacer element, and a second imaging lens element. The second object-side bearing surface of the spacer element corresponds to the first image-side bearing surface of the first imaging lens element. The third object-side bearing surface of the second imaging lens element corresponds to the second image-side bearing surface of the spacer element. The lens barrel element and the spacer element together form a buffer structure, and the buffer structure is farther from the optical axis than the first image-side bearing surface. The buffer structure comprises a first gap and a second gap. The first gap and the third object-side bearing surface are at least partially overlapped in a direction parallel to the optical axis. An order difference exists between the first gap and the second gap, and the second gap is closer to the optical axis than the first gap. The invention further discloses a camera module with the imaging lens and an electronic device with the camera module.

Description

[0001] This application is a divisional application. The original application was filed on October 27, 2021; the application number is 202111253134.0; and the invention title is: Imaging Lens, Camera Module and Electronic Device. Technical Field

[0002] This invention relates to an imaging lens, a camera module, and an electronic device, particularly an imaging lens and camera module suitable for electronic devices. Background Technology

[0003] With advancements in semiconductor technology, the performance of electronic image sensors has improved, allowing pixels to reach smaller sizes. Therefore, optical lenses with high image quality have become an indispensable component. Furthermore, with the rapid development of technology, mobile devices equipped with optical lenses are being used in a wider range of applications, leading to more diverse requirements for these lenses.

[0004] In recent years, electronic products have been trending towards thinner and lighter designs. However, traditional optical lenses can no longer simultaneously meet the demands of miniaturization and high image quality. Modern imaging devices often feature autofocus, optical image stabilization, and zoom capabilities. However, to achieve these functions, the structure of the imaging device has become relatively complex, and its size has increased accordingly, thus increasing the overall size of the electronic device. In the manufacturing process of optical lenses, there are assembly tolerances when assembling lens elements into the lens barrel, which can easily lead to warping issues. This results in uneven and skewed assembly of the lens elements, reducing the yield rate of the optical lens. Summary of the Invention

[0005] In view of the above-mentioned problems, the present invention discloses an imaging lens, camera module and electronic device that helps to prevent component skew and warping, thereby reducing optical aberrations and providing higher optical specifications.

[0006] This invention provides an imaging lens, comprising a lens barrel element and an imaging lens group. The imaging lens group is disposed on the lens barrel element and sequentially includes a first imaging lens element, a spacer element, and a second imaging lens element from the object side to the image side. The first imaging lens element has a first image-side bearing surface. The spacer element has a second object-side bearing surface and a second image-side bearing surface, wherein the second object-side bearing surface corresponds to the first image-side bearing surface. The second imaging lens element has a third object-side bearing surface, and the third object-side bearing surface corresponds to the second image-side bearing surface. The lens barrel element and the spacer element together form a buffer structure, and the buffer structure is farther from the optical axis of the imaging lens than the first image-side bearing surface. The buffer structure includes a first gap and a second gap, wherein the first gap and the third object-side bearing surface overlap at least partially in a direction parallel to the optical axis, there is a step difference between the first gap and the second gap, and the second gap is closer to the optical axis than the first gap. The inner diameter of the first gap is Φg1, the outer diameter of the first image-side bearing surface is Φo1, and the outer diameter of the second image-side bearing surface is Φo2. They satisfy the following condition: 0.3 < (Φg1-Φo1) / (Φo2-Φo1) < 0.9.

[0007] The present invention provides a camera module comprising the aforementioned imaging lens and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the imaging lens.

[0008] The present invention provides an electronic device comprising the aforementioned camera module.

[0009] According to the imaging lens, camera module, and electronic device disclosed in this invention, by using a buffer structure in conjunction with the assembly configuration of imaging lens elements and spacer elements, it is possible to prevent the elements from tilting or warping and maintain the spacing between each imaging lens element, thereby reducing optical aberrations and making the actual imaging quality of the imaging lens closer to the design value, thus providing higher optical specifications.

[0010] The foregoing description of the disclosure and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of the present invention, and to provide a further explanation of the scope of the patent application of the present invention. Attached Figure Description

[0011] Figure 1 A three-dimensional cross-sectional schematic diagram of an imaging lens according to a first embodiment of the present invention is shown.

[0012] Figure 2 Draw Figure 1 An enlarged schematic diagram of region EL1.

[0013] Figure 3 Draw Figure 2 A magnified diagram of region EL2.

[0014] Figure 4 Draw Figure 1 A cross-sectional schematic diagram of the imaging lens.

[0015] Figure 5 Draw Figure 1 An enlarged schematic diagram of region EL3.

[0016] Figure 6 Draw Figure 5 An enlarged schematic diagram of region EL4.

[0017] Figure 7 Draw Figure 5 An enlarged schematic diagram of region EL5.

[0018] Figure 8 A cross-sectional schematic diagram of an imaging lens according to a second embodiment of the present invention is shown.

[0019] Figure 9 Draw Figure 8 An enlarged schematic diagram of region EL6.

[0020] Figure 10 Draw Figure 8 A partial three-dimensional schematic diagram of the spacer element and its strip-shaped groove structure at the middle arrow PA.

[0021] Figure 11 A cross-sectional schematic diagram of an imaging lens according to a third embodiment of the present invention is shown.

[0022] Figure 12 Draw Figure 11 An enlarged schematic diagram of region EL7.

[0023] Figure 13 A cross-sectional schematic diagram of an imaging lens according to a fourth embodiment of the present invention is shown.

[0024] Figure 14 Draw Figure 13 An enlarged schematic diagram of region EL8.

[0025] Figure 15 A cross-sectional schematic diagram of an imaging lens according to a fifth embodiment of the present invention is shown.

[0026] Figure 16 Draw Figure 15 An enlarged schematic diagram of region EL9.

[0027] Figure 17 A perspective view of one side of an electronic device according to a sixth embodiment of the present invention is shown.

[0028] Figure 18 Draw Figure 17 A three-dimensional diagram of the other side of the electronic device.

[0029] Figure 19 A schematic diagram illustrating the image captured by the ultra-wide-angle camera module.

[0030] Figure 20 A schematic diagram illustrating the image captured by a high-resolution camera module.

[0031] Figure 21 A schematic diagram illustrating the image captured by a telephoto camera module.

[0032] Figure 22 A perspective view of one side of an electronic device according to a seventh embodiment of the present invention is shown.

[0033] Figure 23 A perspective schematic diagram of an electronic device according to an eighth embodiment of the present invention is shown.

[0034] Figure 24 Draw Figure 23 A partial schematic diagram of an electronic device.

[0035] Figure 25 Draw Figure 23 A side view of the electronic device.

[0036] Figure 26 Draw Figure 23 A top view of the electronic device.

[0037] [Symbol Explanation]

[0038] 1,1b,1c,1d,1e: Imaging lenses

[0039] 10, 10b, 10c, 10d, 10e: Lens tube elements

[0040] 20, 20b, 20c, 20d, 20e: Imaging lens group

[0041] 21, 21b, 21c, 21d, 21e: First imaging lens element

[0042] 211, 211b, 211c, 211d, 211e: First image side bearing surface

[0043] 23, 23b, 23c, 23d, 23e: Spacer elements

[0044] 231, 231b, 231c, 231d, 231e: Second side bearing surface

[0045] 233, 233b, 233c, 233d, 233e: Second image side bearing surface

[0046] 235b: Strip-shaped groove structure

[0047] 25, 25b, 25c, 25d, 25e: Second imaging lens elements

[0048] 251, 251b, 251c, 251d, 251e: Third-party side bearing surface

[0049] 255, 255b, 255c, 255d, 255e: Marker structure

[0050] 30, 30b, 30c, 30d, 30e: Buffer structure

[0051] 31, 31b, 31c, 31d, 31e: First gap

[0052] 32, 32b, 32c, 32d, 32e: Second gap

[0053] 6,7,8: Electronic devices

[0054] 60a, 60b, 60c, 70z, 70a, 70b, 70c, 70d, 70e, 70f, 70g, 70h, 80: Camera modules

[0055] 61,71: Flash module

[0056] 62: Focusing Assist Module

[0057] 63: Image Signal Processor

[0058] 64: Display Module

[0059] LAL1, LAL2: Light-absorbing coatings

[0060] VG: V-shaped groove

[0061] SS: Light-blocking sheet

[0062] OL: Optical Axis

[0063] g1: Width of the first gap

[0064] g2: Width of the second gap

[0065] Φg1: Inner diameter of the first gap

[0066] Φo1: Outer diameter of the first image side bearing surface

[0067] Φo2: Outer diameter of the second image side bearing surface

[0068] Φi1: Inner diameter of the first image side bearing surface Detailed Implementation

[0069] The following detailed description of the features and advantages of the present invention in the embodiments is sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly. Based on the disclosure of this specification, the scope of the claims, and the accompanying drawings, any person skilled in the art can easily understand the related objectives and advantages of the present invention. The following embodiments further illustrate the viewpoints of the present invention in detail, but are not intended to limit the scope of the present invention in any way.

[0070] This invention provides an imaging lens comprising a lens barrel element and an imaging lens group. The imaging lens group is disposed on the lens barrel element and sequentially comprises a first imaging lens element, a spacer element, and a second imaging lens element from the object side to the image side. The first imaging lens element has a first image-side bearing surface. The spacer element has a second object-side bearing surface and a second image-side bearing surface, wherein the second object-side bearing surface of the spacer element corresponds to the first image-side bearing surface of the first imaging lens element. The second imaging lens element has a third object-side bearing surface, and the third object-side bearing surface corresponds to the second image-side bearing surface of the spacer element.

[0071] The lens barrel element and the spacer element together form a buffer structure, and the buffer structure is farther away from the optical axis of the imaging lens than the first image-side bearing surface of the first imaging lens element. The buffer structure includes a first gap and a second gap, wherein the first gap and the third object-side bearing surface of the second imaging lens element overlap at least partially in a direction parallel to the optical axis, there is a step difference between the first gap and the second gap, and the second gap is closer to the optical axis than the first gap.

[0072] The imaging lens disclosed in this invention, through the assembly and configuration of a buffer structure, imaging lens elements, and spacer elements, can prevent the elements from tilting or warping and maintain the spacing between each imaging lens element, thereby reducing optical aberrations and making the actual imaging quality of the imaging lens closer to the design value, thus providing higher optical specifications.

[0073] In some embodiments, the spacer element can be a plastic spacer element integrally manufactured by injection molding, which has better elasticity and lighter weight, reducing manufacturing costs and improving mass production. The plastic spacer element may have at least one injection mark. Alternatively, the plastic spacer element may have at least two injection marks; this provides higher dimensional accuracy. The plastic spacer element may also contain a liquid crystal polymer, which provides better elasticity and thus higher molding efficiency. The plastic spacer element may also contain glass fibers, allowing the elasticity of the spacer element to be controlled by adjusting the glass fiber doping ratio; this provides better mechanical strength and reduces the likelihood of permanent deformation. A suitable glass fiber doping ratio is approximately between 5% and 45%, and the glass fibers can be long or short fibers depending on the molding requirements. The plastic spacer element may further have multiple strip groove structures, which extend from the second object-side bearing surface to the second image-side bearing surface, and the strip groove structures are regularly arranged around the optical axis; thereby, the efficiency of eliminating stray light can be improved.

[0074] In some embodiments, the spacer element can be a metal spacer element, which has better rigidity and can improve assembly precision control. The metal spacer element may have a V-shaped groove recessed along the direction away from the optical axis; thereby reducing the probability of generating non-imaging rays.

[0075] A light-shielding plate may be provided on at least one of the second object-side bearing surface and the second image-side bearing surface of the spacer element. In this way, a light-shielding plate can be provided on the bearing surface according to the light-shielding requirements.

[0076] The second imaging lens element may include a marking structure. The marking structure is an annular pointed protrusion surrounding the optical axis, and the marking structure is closer to the optical axis than the third object-side bearing surface of the second imaging lens element; thereby, the marking structure can be used to identify the area of ​​the third object-side bearing surface. The marking structure may be a demolding structure formed on the second imaging lens element after demolding of the molding die used to manufacture the second imaging lens element; thereby, the surface accuracy of the third object-side bearing surface can be effectively controlled to balance the pressure applied to the bearing surface during assembly. The marking structure has an included angle in its cross-section, and the angle of the included angle may be between 80 degrees and 100 degrees. For example, in actual manufacturing, a 90-degree included angle is used, but the present invention is not limited thereto.

[0077] The width of the first gap is g1, and the width of the second gap is g2, which satisfy the following condition: 0.01 ≤ g1 / g2 ≤ 0.9. This reduces the probability of interference between the lens elements and the spacer elements. Please refer to... Figure 6The diagram illustrates parameters g1 and g2 according to the first embodiment of the present invention.

[0078] The inner diameter of the first gap is Φg1, the outer diameter of the first image-side bearing surface is Φo1, and the outer diameter of the second image-side bearing surface is Φo2. This satisfies the following condition: 0.3 < (Φg1-Φo1) / (Φo2-Φo1) < 0.9. This improves the supporting force of the spacer element. Please refer to... Figure 4 The diagram illustrates parameters Φg1, Φo1, and Φo2 according to the first embodiment of the present invention.

[0079] The width of the first gap is g1, which can satisfy the following conditions: g1 ≤ 12 micrometers (μm); thereby, the allowable range of assembly force can be increased by setting the narrow gap between the lens element and the spacer element. Alternatively, it can satisfy the following condition: g1 ≤ 8 μm; thereby, deformation of the spacer element due to excessive assembly force can be prevented. Alternatively, it can satisfy the following condition: g1 ≤ 4.5 μm; thereby, better buffering effect can be provided while maintaining controllable molding precision. The first gap can be a gap of uniform width, while the second gap can be a structure of non-uniform width, but the present invention is not limited thereto.

[0080] The outer diameter of the first image-side bearing surface is Φo1, and the outer diameter of the second image-side bearing surface is Φo2. These dimensions satisfy the following condition: 0.50 < Φo1 / Φo2 < 0.90. This improves the product assembly qualification rate.

[0081] The width of the first gap is g1, the inner diameter of the first image-side bearing surface is Φi1, and the inner diameter of the first gap is Φg1. These conditions must satisfy: 0.5 ≤ 1000×g1 / (Φg1-Φi1) ≤ 15. This further improves the strength of the assembled structure. Please refer to... Figure 4 A schematic diagram of parameter Φi1 according to the first embodiment of the present invention is shown.

[0082] A light-absorbing coating may be provided on the first image-side bearing surface of the first imaging lens element, and the light-absorbing coating is in solid contact with the spacer element. In this way, assembly accuracy can be ensured while avoiding large-angle reflected light from the first image-side bearing surface.

[0083] The third object-side bearing surface of the second imaging lens element may be provided with a light-absorbing coating, and the light-absorbing coating has solid contact with the spacer element. In this way, assembly accuracy can be ensured while avoiding large-angle reflected light from the third object-side bearing surface.

[0084] The present invention provides a camera module comprising the aforementioned imaging lens and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the imaging lens.

[0085] The present invention provides an electronic device comprising the aforementioned camera module.

[0086] The various technical features in the imaging lens of the present invention can be combined and configured to achieve the corresponding effects.

[0087] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0088] <First Embodiment>

[0089] Please refer to Figures 1 to 7 ,in Figure 1 A three-dimensional cross-sectional schematic diagram of an imaging lens according to a first embodiment of the present invention is shown. Figure 2 Draw Figure 1 An enlarged schematic diagram of region EL1, Figure 3 Draw Figure 2 An enlarged schematic diagram of region EL2. Figure 4 Draw Figure 1 A cross-sectional schematic diagram of the imaging lens. Figure 5 Draw Figure 1 An enlarged schematic diagram of region EL3. Figure 6 Draw Figure 5 An enlarged schematic diagram of region EL4, and Figure 7 Draw Figure 5 An enlarged schematic diagram of region EL5.

[0090] The imaging lens 1 includes a lens barrel element 10 and an imaging lens group 20, wherein the imaging lens group 20 is disposed on the lens barrel element 10, and the imaging lens group 20 includes a first imaging lens element 21, a spacer element 23 and a second imaging lens element 25 in sequence from the object side to the image side.

[0091] The first imaging lens element 21 has a first image-side bearing surface 211. The spacer element 23 has a second object-side bearing surface 231 and a second image-side bearing surface 233, wherein the second object-side bearing surface 231 of the spacer element 23 corresponds to the first image-side bearing surface 211 of the first imaging lens element 21. The second imaging lens element 25 has a third object-side bearing surface 251, and the third object-side bearing surface 251 corresponds to the second image-side bearing surface 233 of the spacer element 23.

[0092] The lens barrel element 10 and the spacer element 23 together form a buffer structure 30, and the buffer structure 30 is farther away from the optical axis OL of the imaging lens 1 than the first image-side bearing surface 211 of the first imaging lens element 21. The buffer structure 30 includes a first gap 31 and a second gap 32, wherein the first gap 31 and the third object-side bearing surface 251 of the second imaging lens element 25 overlap at least partially in a direction parallel to the optical axis OL, there is a step difference between the first gap 31 and the second gap 32, and the second gap 32 is closer to the optical axis OL than the first gap 31.

[0093] The spacer element 23 is a plastic spacer element, which may be integrally formed by injection molding and may have at least one injection mark. In addition, the plastic spacer element may, for example, contain liquid crystal polymer or glass fiber.

[0094] The second imaging lens element 25 includes a marking structure 255, which may be a demolding structure formed on the second imaging lens element 25 after the molding die used to manufacture the second imaging lens element 25 is demolded. The marking structure 255 is an annular pointed protrusion surrounding the optical axis OL, and the marking structure 255 is closer to the optical axis OL than the third object-side bearing surface 251 of the second imaging lens element 25.

[0095] The width of the first gap 31 is g1, and the width of the second gap 32 is g2, which satisfy the following conditions: g1 = 0.005 mm; g2 = 0.03 mm; and g1 / g2 = 0.167.

[0096] The inner diameter of the first gap 31 is Φg1, the outer diameter of the first image-side bearing surface 211 is Φo1, and the outer diameter of the second image-side bearing surface 233 is Φo2. These conditions satisfy the following: Φg1 = 8.89 mm; Φo1 = 7.321 mm; Φo2 = 9.66 mm; and (Φg1-Φo1) / (Φo2-Φo1) = 0.671.

[0097] The width of the first gap 31 is g1, which satisfies the following condition: g1 = 5 μm.

[0098] The outer diameter of the first image-side bearing surface 211 is Φo1, and the outer diameter of the second image-side bearing surface 233 is Φo2, which satisfy the following conditions: Φo1 = 7.321 mm; Φo2 = 9.66 mm; and Φo1 / Φo2 = 0.758.

[0099] The width of the first gap 31 is g1, the inner diameter of the first image-side bearing surface 211 is Φi1, and the inner diameter of the first gap 31 is Φg1, which satisfy the following conditions: g1 = 0.005 mm; Φg1 = 8.89 mm; Φi1 = 6.712 mm; and 1000×g1 / (Φg1-Φi1) = 2.3.

[0100] <Second Embodiment>

[0101] Please refer to Figures 8 to 10 ,in Figure 8 A cross-sectional schematic diagram of an imaging lens according to a second embodiment of the present invention is shown. Figure 9 Draw Figure 8 An enlarged schematic diagram of region EL6, and Figure 10 Draw Figure 8 A partial three-dimensional schematic diagram of the spacer element and its strip-shaped groove structure at the middle arrow PA.

[0102] The imaging lens 1b includes a lens barrel element 10b and an imaging lens group 20b, wherein the imaging lens group 20b is disposed on the lens barrel element 10b, and the imaging lens group 20b includes a first imaging lens element 21b, a spacer element 23b and a second imaging lens element 25b in sequence from the object side to the image side.

[0103] The first imaging lens element 21b has a first image-side bearing surface 211b. The spacer element 23b has a second object-side bearing surface 231b and a second image-side bearing surface 233b, wherein the second object-side bearing surface 231b of the spacer element 23b corresponds to the first image-side bearing surface 211b of the first imaging lens element 21b. The second imaging lens element 25b has a third object-side bearing surface 251b, and the third object-side bearing surface 251b corresponds to the second image-side bearing surface 233b of the spacer element 23b.

[0104] Lens barrel element 10b and spacer element 23b together form a buffer structure 30b, and the buffer structure 30b is farther away from the optical axis OL of the imaging lens 1b than the first image-side bearing surface 211b of the first imaging lens element 21b. The buffer structure 30b includes a first gap 31b and a second gap 32b, wherein the first gap 31b and the third object-side bearing surface 251b of the second imaging lens element 25b overlap at least partially in a direction parallel to the optical axis OL, there is a step difference between the first gap 31b and the second gap 32b, and the second gap 32b is closer to the optical axis OL than the first gap 31b.

[0105] The spacer element 23b is a plastic spacer element, which can be integrally formed by injection molding and may have at least one injection mark. Furthermore, the plastic spacer element may, for example, contain liquid crystal polymer or glass fiber. In this embodiment, the spacer element 23b has a plurality of strip-shaped groove structures 235b extending from the second object-side bearing surface 231b to the second image-side bearing surface 233b, and the strip-shaped groove structures 235b are regularly arranged around the optical axis OL.

[0106] The second imaging lens element 25b includes a marking structure 255b, which may be a demolding structure formed on the second imaging lens element 25b after demolding of the molding die used to manufacture the second imaging lens element 25b. The marking structure 255b is an annular pointed protrusion surrounding the optical axis OL, and the marking structure 255b is closer to the optical axis OL than the third object-side bearing surface 251b of the second imaging lens element 25b.

[0107] The width of the first gap 31b is g1, and the width of the second gap 32b is g2, which satisfy the following conditions: g1 = 0.003 mm; g2 = 0.162 mm; and g1 / g2 = 0.019. In this embodiment, the second gap 32b has a non-uniform width structure.

[0108] The inner diameter of the first gap 31b is Φg1, the outer diameter of the first image-side bearing surface 211b is Φo1, and the outer diameter of the second image-side bearing surface 233b is Φo2. These conditions satisfy the following: Φg1 = 8.894 mm; Φo1 = 7.321 mm; Φo2 = 9.66 mm; and (Φg1-Φo1) / (Φo2-Φo1) = 0.673.

[0109] The width of the first gap 31b is g1, which satisfies the following condition: g1 = 3 μm.

[0110] The outer diameter of the first image-side bearing surface 211b is Φo1, and the outer diameter of the second image-side bearing surface 233b is Φo2, which satisfy the following conditions: Φo1 = 7.321 mm; Φo2 = 9.66 mm; and Φo1 / Φo2 = 0.758.

[0111] The width of the first gap 31b is g1, the inner diameter of the first image-side bearing surface 211b is Φi1, and the inner diameter of the first gap 31b is Φg1, which satisfy the following conditions: g1 = 0.003 mm; Φg1 = 8.894 mm; Φi1 = 6.712 mm; and 1000×g1 / (Φg1-Φi1) = 1.4.

[0112] <Third Embodiment>

[0113] Please refer to Figure 11 and Figure 12 ,in Figure 11 A cross-sectional schematic diagram of an imaging lens according to a third embodiment of the present invention is shown, and Figure 12 Draw Figure 11 An enlarged schematic diagram of region EL7.

[0114] The imaging lens 1c includes a lens barrel element 10c and an imaging lens group 20c, wherein the imaging lens group 20c is disposed on the lens barrel element 10c, and the imaging lens group 20c includes a first imaging lens element 21c, a spacer element 23c and a second imaging lens element 25c in sequence from the object side to the image side.

[0115] The first imaging lens element 21c has a first image-side bearing surface 211c. The spacer element 23c has a second object-side bearing surface 231c and a second image-side bearing surface 233c, wherein the second object-side bearing surface 231c of the spacer element 23c corresponds to the first image-side bearing surface 211c of the first imaging lens element 21c. The second imaging lens element 25c has a third object-side bearing surface 251c, and the third object-side bearing surface 251c corresponds to the second image-side bearing surface 233c of the spacer element 23c.

[0116] Lens barrel element 10c and spacer element 23c together form a buffer structure 30c, and the buffer structure 30c is farther away from the optical axis OL of the imaging lens 1c than the first image-side bearing surface 211c of the first imaging lens element 21c. The buffer structure 30c includes a first gap 31c and a second gap 32c, wherein the first gap 31c and the third object-side bearing surface 251c of the second imaging lens element 25c overlap at least partially in a direction parallel to the optical axis OL, there is a step difference between the first gap 31c and the second gap 32c, and the second gap 32c is closer to the optical axis OL than the first gap 31c.

[0117] The spacer element 23c is a plastic spacer element, which may be integrally formed by injection molding and may have at least one injection mark. Furthermore, the plastic spacer element may, for example, contain liquid crystal polymer or glass fiber. In this embodiment, a light-shielding sheet SS is provided on the second object-side bearing surface 231c of the spacer element 23c.

[0118] The second imaging lens element 25c includes a marking structure 255c, which may be a demolding structure formed on the second imaging lens element 25c after the molding die used to manufacture the second imaging lens element 25c is demolded. The marking structure 255c is an annular pointed protrusion surrounding the optical axis OL, and the marking structure 255c is closer to the optical axis OL than the third object-side bearing surface 251c of the second imaging lens element 25c.

[0119] The width of the first gap 31c is g1, and the width of the second gap 32c is g2, which satisfy the following conditions: g1 = 0.01 mm; g2 = 0.047 mm; and g1 / g2 = 0.213.

[0120] The inner diameter of the first gap 31c is Φg1, the outer diameter of the first image-side bearing surface 211c is Φo1, and the outer diameter of the second image-side bearing surface 233c is Φo2. These conditions satisfy the following: Φg1 = 8.88 mm; Φo1 = 7.321 mm; Φo2 = 9.66 mm; and (Φg1-Φo1) / (Φo2-Φo1) = 0.667.

[0121] The width of the first gap 31c is g1, which satisfies the following condition: g1 = 10 μm.

[0122] The outer diameter of the first image-side bearing surface 211c is Φo1, and the outer diameter of the second image-side bearing surface 233c is Φo2, which satisfy the following conditions: Φo1 = 7.321 mm; Φo2 = 9.66 mm; and Φo1 / Φo2 = 0.758.

[0123] The width of the first gap 31c is g1, the inner diameter of the first image-side bearing surface 211c is Φi1, and the inner diameter of the first gap 31c is Φg1, which satisfy the following conditions: g1 = 0.01 mm; Φg1 = 8.88 mm; Φi1 = 6.712 mm; and 1000×g1 / (Φg1-Φi1) = 4.6.

[0124] <Fourth Embodiment>

[0125] Please refer to Figure 13 and Figure 14 ,in Figure 13 A cross-sectional schematic diagram of an imaging lens according to a fourth embodiment of the present invention is shown, and Figure 14 Draw Figure 13 An enlarged schematic diagram of region EL8.

[0126] The imaging lens 1d includes a lens barrel element 10d and an imaging lens group 20d, wherein the imaging lens group 20d is disposed on the lens barrel element 10d, and the imaging lens group 20d includes a first imaging lens element 21d, a spacer element 23d and a second imaging lens element 25d in sequence from the object side to the image side.

[0127] The first imaging lens element 21d has a first image-side bearing surface 211d. The spacer element 23d has a second object-side bearing surface 231d and a second image-side bearing surface 233d, wherein the second object-side bearing surface 231d of the spacer element 23d corresponds to the first image-side bearing surface 211d of the first imaging lens element 21d. The second imaging lens element 25d has a third object-side bearing surface 251d, and the third object-side bearing surface 251d corresponds to the second image-side bearing surface 233d of the spacer element 23d.

[0128] Lens barrel element 10d and spacer element 23d together form a buffer structure 30d, and the buffer structure 30d is farther away from the optical axis OL of the imaging lens 1d than the first image-side bearing surface 211d of the first imaging lens element 21d. The buffer structure 30d includes a first gap 31d and a second gap 32d, wherein the first gap 31d and the third object-side bearing surface 251d of the second imaging lens element 25d overlap at least partially in a direction parallel to the optical axis OL, there is a step difference between the first gap 31d and the second gap 32d, and the second gap 32d is closer to the optical axis OL than the first gap 31d.

[0129] In this embodiment, the spacer element 23d is a metal spacer element. In addition, a light-shielding sheet SS is provided on the second object-side bearing surface 231d of the spacer element 23d.

[0130] The second imaging lens element 25d includes a marking structure 255d, which may be a demolding structure formed on the second imaging lens element 25d after demolding of the molding die used to manufacture the second imaging lens element 25d. The marking structure 255d is an annular pointed protrusion surrounding the optical axis OL, and the marking structure 255d is closer to the optical axis OL than the third object-side bearing surface 251d of the second imaging lens element 25d.

[0131] The width of the first gap 31d is g1, and the width of the second gap 32d is g2, which satisfy the following conditions: g1 = 0.01 mm; g2 = 0.045 mm; and g1 / g2 = 0.222.

[0132] The inner diameter of the first gap 31d is Φg1, the outer diameter of the first image-side bearing surface 211d is Φo1, and the outer diameter of the second image-side bearing surface 233d is Φo2. These conditions satisfy the following: Φg1 = 8.88 mm; Φo1 = 7.321 mm; Φo2 = 9.66 mm; and (Φg1-Φo1) / (Φo2-Φo1) = 0.667.

[0133] The width of the first gap 31d is g1, which satisfies the following condition: g1 = 10 μm.

[0134] The outer diameter of the first image-side bearing surface 211d is Φo1, and the outer diameter of the second image-side bearing surface 233d is Φo2, which satisfy the following conditions: Φo1 = 7.321 mm; Φo2 = 9.66 mm; and Φo1 / Φo2 = 0.758.

[0135] The width of the first gap 31d is g1, the inner diameter of the first image-side bearing surface 211d is Φi1, and the inner diameter of the first gap 31d is Φg1, which satisfy the following conditions: g1 = 0.01 mm; Φg1 = 8.88 mm; Φi1 = 6.712 mm; and 1000×g1 / (Φg1-Φi1) = 4.6.

[0136] <Fifth Embodiment>

[0137] Please refer to Figure 15 and Figure 16 ,in Figure 15 A cross-sectional schematic diagram of an imaging lens according to a fifth embodiment of the present invention is shown, and Figure 16 Draw Figure 15 An enlarged schematic diagram of region EL9.

[0138] The imaging lens 1e includes a lens barrel element 10e and an imaging lens group 20e, wherein the imaging lens group 20e is disposed on the lens barrel element 10e, and the imaging lens group 20e includes a first imaging lens element 21e, a spacer element 23e and a second imaging lens element 25e in sequence from the object side to the image side.

[0139] The first imaging lens element 21e has a first image-side bearing surface 211e. The spacer element 23e has a second object-side bearing surface 231e and a second image-side bearing surface 233e, wherein the second object-side bearing surface 231e of the spacer element 23e corresponds to the first image-side bearing surface 211e of the first imaging lens element 21e. The second imaging lens element 25e has a third object-side bearing surface 251e, and the third object-side bearing surface 251e corresponds to the second image-side bearing surface 233e of the spacer element 23e.

[0140] The lens barrel element 10e and the spacer element 23e together form a buffer structure 30e, and the buffer structure 30e is farther away from the optical axis OL of the imaging lens 1e than the first image-side bearing surface 211e of the first imaging lens element 21e. The buffer structure 30e includes a first gap 31e and a second gap 32e, wherein the first gap 31e and the third object-side bearing surface 251e of the second imaging lens element 25e overlap at least partially in a direction parallel to the optical axis OL, there is a step difference between the first gap 31e and the second gap 32e, and the second gap 32e is closer to the optical axis OL than the first gap 31e.

[0141] In this embodiment, the spacer element 23e is a metal spacer element, and the spacer element 23e has a V-shaped groove VG recessed in a direction away from the optical axis OL.

[0142] The second imaging lens element 25e includes a marking structure 255e, which may be a demolding structure formed on the second imaging lens element 25e after demolding of the molding die used to manufacture the second imaging lens element 25e. The marking structure 255e is an annular pointed protrusion surrounding the optical axis OL, and the marking structure 255e is closer to the optical axis OL than the third object-side bearing surface 251e of the second imaging lens element 25e.

[0143] In this embodiment, a light-absorbing coating LAL1 is provided on the first image-side bearing surface 211e of the first imaging lens element 21e, and the light-absorbing coating LAL1 is in solid contact with the spacer element 23e. In addition, a light-absorbing coating LAL2 is also provided on the third object-side bearing surface 251e of the second imaging lens element 25e, and the light-absorbing coating LAL2 is in solid contact with the spacer element 23e.

[0144] The width of the first gap 31e is g1, and the width of the second gap 32e is g2, which satisfy the following conditions: g1 = 0.003 mm; g2 = 0.036 mm; and g1 / g2 = 0.083.

[0145] The inner diameter of the first gap 31e is Φg1, the outer diameter of the first image-side bearing surface 211e is Φo1, and the outer diameter of the second image-side bearing surface 233e is Φo2. These conditions satisfy the following: Φg1 = 8.3 mm; Φo1 = 6.636 mm; Φo2 = 9.04 mm; and (Φg1-Φo1) / (Φo2-Φo1) = 0.692.

[0146] The width of the first gap 31e is g1, which satisfies the following condition: g1 = 3 μm.

[0147] The outer diameter of the first image-side bearing surface 211e is Φo1, and the outer diameter of the second image-side bearing surface 233e is Φo2, which satisfy the following conditions: Φo1 = 6.636 mm; Φo2 = 9.04 mm; and Φo1 / Φo2 = 0.734.

[0148] The width of the first gap 31e is g1, the inner diameter of the first image-side bearing surface 211e is Φi1, and the inner diameter of the first gap 31e is Φg1, which satisfy the following conditions: g1 = 0.003 mm; Φg1 = 8.3 mm; Φi1 = 6.205 mm; and 1000×g1 / (Φg1-Φi1) = 1.4.

[0149] <Sixth Embodiment>

[0150] Please refer to Figure 17 and Figure 18 ,in Figure 17 A perspective view of one side of an electronic device according to a sixth embodiment of the present invention is shown, and Figure 18 Draw Figure 17 A three-dimensional diagram of the other side of the electronic device.

[0151] In this embodiment, the electronic device 6 is a smartphone. The electronic device 6 includes multiple camera modules, a flash module 61, a focus assist module 62, an image signal processor 63, a display module (user interface) 64, and an image software processor (not shown).

[0152] These camera modules include an ultra-wide-angle camera module 60a, a high-resolution camera module 60b, and a telephoto camera module 60c. At least one of the camera modules 60a, 60b, and 60c includes an imaging lens of the present invention and an electronic photosensitive element, with the electronic photosensitive element disposed on the imaging surface of the imaging lens.

[0153] The ultra-wide-angle camera module 60a has the ability to capture multiple scenes. Figure 19 A schematic diagram illustrating images captured by the ultra-wide-angle camera module 60a.

[0154] The high-resolution camera module 60b features high resolution and low distortion. The high-resolution camera module 60b can further capture… Figure 19 A portion of the image. Figure 20 A schematic diagram illustrating images captured by a high-resolution camera module 60b.

[0155] The telephoto camera module 60c features high magnification. The telephoto camera module 60c can further capture... Figure 20 A portion of the image. Figure 21 A schematic diagram illustrating image capture using a telephoto camera module 60c is shown. The maximum field of view (FOV) of the camera module corresponds to... Figure 21 From that perspective.

[0156] When the user photographs a subject, the electronic device 6 uses the ultra-wide-angle camera module 60a, the high-resolution camera module 60b, or the telephoto camera module 60c to focus the light and capture an image. It then activates the flash module 61 for supplemental lighting and uses the subject distance information provided by the focus assist module 62 for rapid focusing. The image signal processor 63 further optimizes the image to improve the image quality produced by the camera module and provides zoom functionality. The focus assist module 62 can use an infrared or laser focus assist system to achieve rapid focusing. The display module 64 can be a touchscreen with touch functionality, allowing manual adjustment of the shooting angle. This enables switching between different camera modules and utilizes the diverse functions of the image software processor for image capture and processing (or a physical shooting button can be used). The image processed by the image software processor is then displayed on the display module 64.

[0157] <Seventh Embodiment>

[0158] Please refer to Figure 22 A perspective view of one side of an electronic device according to a seventh embodiment of the present invention is shown.

[0159] In this embodiment, the electronic device 7 is a smartphone. The electronic device 7 includes camera modules 70z, 70a, 70b, 70c, 70d, 70e, 70f, 70g, and 70h, a flash module 71, an image signal processor, a display device, and an image software processor (not shown). Camera modules 70z, 70a, 70b, 70c, 70d, 70e, 70f, 70g, and 70h are all disposed on the same side of the electronic device 7, while the display device is disposed on the other side. At least one of the camera modules 70z, 70a, 70b, 70c, 70d, 70e, 70f, 70g, and 70h includes an imaging lens and an electronic photosensitive element, with the electronic photosensitive element disposed on the imaging surface of the imaging lens.

[0160] Camera module 70z is a telephoto camera module, camera module 70a is a telephoto camera module, camera module 70b is a telephoto camera module, camera module 70c is a telephoto camera module, camera module 70d is a wide-angle camera module, camera module 70e is a wide-angle camera module, camera module 70f is an ultra-wide-angle camera module, camera module 70g is an ultra-wide-angle camera module, and camera module 70h is a time-of-flight (ToF) camera module. In this embodiment, camera modules 70z, 70a, 70b, 70c, 70d, 70e, 70f, and 70g have different viewing angles, allowing the electronic device 7 to provide different magnifications to achieve optical zoom shooting effects. Furthermore, camera modules 70z and 70a are telephoto camera modules with light-shifting elements. Additionally, camera module 70h can acquire depth information of the image. The electronic device 7 described above includes multiple camera modules 70z, 70a, 70b, 70c, 70d, 70e, 70f, 70g, and 70h as an example, but the number and configuration of the camera modules are not intended to limit the present invention. When a user photographs a subject, the electronic device 7 uses camera modules 70z, 70a, 70b, 70c, 70d, 70e, 70f, 70g, or 70h to focus light and capture an image, activates the flash module 71 for supplemental lighting, and performs subsequent processing in a manner similar to the aforementioned embodiments, which will not be described in detail here.

[0161] <Eighth Embodiment>

[0162] Please refer to Figures 23 to 26 ,in Figure 23 A perspective schematic diagram of an electronic device according to an eighth embodiment of the present invention is shown. Figure 24 Draw Figure 23 A partial schematic diagram of an electronic device. Figure 25 Draw Figure 23 A side view of the electronic device, and Figure 26 Draw Figure 23 A top view of the electronic device.

[0163] In this embodiment, the electronic device 8 is a car. The electronic device 8 includes a plurality of automotive camera modules 80, and these camera modules 80 respectively include, for example, the imaging lenses of the present invention, which can be applied, for example, to a panoramic driving assistance system, a driving recorder, and a reversing camera.

[0164] like Figure 23 and Figure 24As shown, the camera module 80 can be installed, for example, below the left and right rearview mirrors, in front of the vehicle, and behind the vehicle, to capture images around the car. The images can be combined into a panoramic view by the image software processor, providing images of the driver's blind spots, allowing the driver to control the situation around the vehicle, which is beneficial for driving and parking.

[0165] like Figure 25 As shown, the camera module 80 can be installed, for example, below the left and right rearview mirrors respectively, wherein the viewing angle of the camera module 80 can be 40 degrees to 90 degrees, to capture image information within the range of the left and right lanes.

[0166] like Figure 26 As shown, the camera module 80 can also be installed, for example, inside the mirrors of the left and right rearview mirrors and inside the front and rear windshields, thereby helping the driver obtain information about the external space outside the cockpit, providing more perspectives to reduce blind spots and improve driving safety.

[0167] The imaging lens and camera module of this invention are not limited to applications in smartphones, panoramic driving assistance systems, dashcams, and reversing cameras. They can be applied to various mobile focusing systems as needed, offering both excellent aberration correction and good image quality. For example, the imaging lens and camera module can be used in a wide range of electronic devices, including 3D image capture, digital cameras, mobile devices, tablet computers, smart TVs, network monitoring equipment, multi-lens devices, recognition systems, motion-sensing game consoles, and wearable devices. The aforementioned electronic devices are merely illustrative examples of practical applications of this invention and do not limit the scope of application of the imaging lens and camera module.

[0168] While the present invention has been disclosed above with reference to the foregoing embodiments, these embodiments are not intended to limit the invention. Any modifications and refinements made without departing from the spirit and scope of the invention are within the scope of patent protection of the present invention. For a description of the scope of protection defined in the appended claims, please refer to the appended claims.

Claims

1. An imaging lens, characterized in that, Include: One lens tube element; and An imaging lens group is disposed on the lens barrel element, the imaging lens group comprising, from the object side to the image side, the following in sequence: A first imaging lens element having a first image-side bearing surface; A spacer element having a second object-side bearing surface and a second image-side bearing surface, the second object-side bearing surface corresponding to the first image-side bearing surface; and A second imaging lens element having a third object-side bearing surface, the third object-side bearing surface corresponding to the second image-side bearing surface; The lens barrel element and the spacer element together form a buffer structure, the buffer structure being farther away from the optical axis of the imaging lens from the first image-side bearing surface, and the buffer structure comprising: A first gap, wherein the first gap and the third object-side bearing surface at least partially overlap in a direction parallel to the optical axis; and A second gap, wherein there is a first-order difference between the first gap and the second gap, and the second gap is closer to the optical axis than the first gap; Wherein, the inner diameter of the first gap is Φg1, the outer diameter of the first image-side bearing surface is Φo1, and the outer diameter of the second image-side bearing surface is Φo2, which satisfy the following conditions: 0.3 < (Φg1-Φo1) / (Φo2-Φo1) < 0.

9.

2. The imaging lens according to claim 1, characterized in that, The inner diameter of the first gap is Φg1, the outer diameter of the first image-side bearing surface is Φo1, and the outer diameter of the second image-side bearing surface is Φo2, which satisfy the following conditions: 0.3 < (Φg1-Φo1) / (Φo2-Φo1) ≤ 0.

692.

3. The imaging lens according to claim 1, characterized in that, The width of the first gap is g1, which satisfies the following condition: g1 ≤ 12 micrometers.

4. The imaging lens according to claim 3, characterized in that, The width of the first gap is g1, which satisfies the following condition: g1 ≤ 4.5 micrometers.

5. The imaging lens according to claim 1, characterized in that, The width of the first gap is g1, and the width of the second gap is g2, which satisfy the following conditions: 0.01 ≤ g1 / g2 ≤ 0.

9.

6. The imaging lens according to claim 5, characterized in that, The width of the first gap is g1, and the width of the second gap is g2, which satisfy the following conditions: 0.019 ≤ g1 / g2 ≤ 0.

222.

7. The imaging lens according to claim 1, characterized in that, The outer diameter of the first image-side bearing surface is Φo1, and the outer diameter of the second image-side bearing surface is Φo2, which satisfy the following conditions: 0.50 < Φo1 / Φo2 < 0.

90.

8. The imaging lens according to claim 7, characterized in that, The outer diameter of the first image-side bearing surface is Φo1, and the outer diameter of the second image-side bearing surface is Φo2, which satisfy the following conditions: 0.50 < Φo1 / Φo2 ≤ 0.

758.

9. The imaging lens according to claim 1, characterized in that, The width of the first gap is g1, the inner diameter of the first image-side bearing surface is Φi1, and the inner diameter of the first gap is Φg1, which satisfy the following conditions: 0.5 ≤ 1000×g1 / (Φg1-Φi1) ≤ 15.

10. The imaging lens according to claim 9, characterized in that, The width of the first gap is g1, the inner diameter of the first image-side bearing surface is Φi1, and the inner diameter of the first gap is Φg1, which satisfy the following conditions: 1.4 ≤ 1000×g1 / (Φg1-Φi1) ≤ 4.

6.

11. The imaging lens according to claim 1, characterized in that, The first image-side bearing surface is provided with a light-absorbing coating, and the light-absorbing coating is in physical contact with the spacer element.

12. The imaging lens according to claim 1, characterized in that, The third object side bearing surface is provided with a light-absorbing coating, and the light-absorbing coating is in solid contact with the spacer element.

13. The imaging lens according to claim 1, characterized in that, The second imaging lens element includes a marking structure, which is an annular pointed protrusion that surrounds the optical axis and is closer to the optical axis than the third object-side bearing surface.

14. The imaging lens according to claim 13, characterized in that, The marking structure is a demolding structure formed on the second imaging lens element after the molding die used to manufacture the second imaging lens element is demolded.

15. The imaging lens according to claim 1, characterized in that, The spacer element is a plastic spacer element, which is integrally formed by injection molding, and the spacer element has at least two injection marks.

16. The imaging lens according to claim 15, characterized in that, The spacer element further has multiple strip-shaped groove structures, which extend from the second object-side bearing surface to the second image-side bearing surface, and the strip-shaped groove structures are regularly arranged around the optical axis.

17. The imaging lens according to claim 1, characterized in that, The spacer element is a metal spacer element, and the spacer element has a V-shaped groove recessed in a direction away from the optical axis.

18. The imaging lens according to claim 1, characterized in that, The spacer element is a metal spacer element, and a light-shielding sheet is provided on at least one of the second object-side bearing surface and the second image-side bearing surface.

19. A camera module, characterized in that, Include: The imaging lens according to claim 1; and An electronic photosensitive element is disposed on an imaging surface of the imaging lens.

20. An electronic device, characterized in that, Include: The camera module according to claim 19.

Images