Imaging lens, camera module and electronic device

Abstract

The utility model discloses an imaging lens, containing a lens, a lens barrel, an arm part, a support element and a maintaining element. The lens has an optical axis. The lens barrel contains the lens. The arm part is arranged on the side of the lens barrel away from the optical axis. The arm part extends in the direction away from the optical axis. The support element has a first contact surface. The first contact surface overlaps and contacts the arm part in the direction parallel to the optical axis. The maintaining element is fixed to the support element. The maintaining element has a second contact surface. The second contact surface overlaps and contacts the arm part in the direction parallel to the optical axis. The second contact surface is opposite to the first contact surface. The arm part is arranged between the support element and the maintaining element. The support element and the maintaining element are different materials. The first contact surface and the second contact surface surround the optical axis. The first contact surface and the second contact surface do not overlap in the direction parallel to the optical axis. The utility model also discloses a camera module with the above-mentioned imaging lens and an electronic device with the camera module.

Description

Technical Field

[0001] This utility model relates to an imaging lens, a camera module, and an electronic device, and in particular to an imaging lens suitable for camera modules and electronic devices. Background Technology

[0002] With the rapid advancement of technology, high-quality optical lenses have become an indispensable component. Furthermore, the applications of electronic devices equipped with optical lenses are expanding, leading to more diverse requirements for these lenses.

[0003] However, in recent years, traditional optical lenses have struggled to meet the high optical quality demands of diversified electronic products. In particular, the dimensional accuracy and temperature tolerance of existing optical lenses may not be sufficient to meet the increasingly stringent market requirements for optical quality. Therefore, improving the mechanisms used to move optical lenses to meet the high specifications of today's electronic devices has become a crucial issue in this field. Utility Model Content

[0004] In view of the above-mentioned problems, this utility model discloses an imaging lens, camera module and electronic device that helps to overcome the temperature effect and maintain optical quality over a wider range of ambient temperatures.

[0005] An embodiment of this utility model discloses an imaging lens comprising at least one lens, a lens barrel, an arm, a support element, and a holding element. The at least one lens has an optical axis. The lens barrel houses the at least one lens. The arm is disposed on the side of the lens barrel away from the optical axis. The arm extends in a direction away from the optical axis. The support element has a first contact surface. The first contact surface overlaps with and contacts the arm in a direction parallel to the optical axis. The holding element is fixed to the support element. The holding element has a second contact surface. The second contact surface overlaps with and contacts the arm in a direction parallel to the optical axis. The second contact surface is located on the opposite side of the first contact surface. The arm is disposed between the support element and the holding element. The support element and the holding element are made of different materials. The first and second contact surfaces surround the optical axis. The first and second contact surfaces do not overlap in a direction parallel to the optical axis. The coefficient of thermal expansion of the support element is α-holder, and the coefficient of thermal expansion of the holding element is α-retainer, which satisfies the following condition: α-retainer < α-holder. Wherein, the distance between the side of the first contact surface closest to the second contact surface and the optical axis is D-1tocenter, and the distance between the side of the second contact surface closest to the first contact surface and the optical axis is D-2tocenter, which satisfies the following condition: 0.05 cm ≤ |D-1tocenter-D-2tocenter| ≤ 1.8 cm.

[0006] Another embodiment of this utility model discloses a camera module comprising the aforementioned imaging lens and a photosensitive element assembly. The photosensitive element assembly includes an electronic photosensitive element. The electronic photosensitive element is disposed on the image side of the imaging lens. A support element for the imaging lens is fixed to the photosensitive element assembly.

[0007] Another embodiment of this utility model discloses a camera module comprising a lens group, a lens barrel, an arm, an electronic photosensitive element, a support element, and a holding element. The lens group has multiple lenses. These lenses are arranged along an optical axis. The lens barrel carries the lens group. The arm extends from the lens barrel in a direction away from the optical axis. The electronic photosensitive element is disposed on the image side of the lens group. The support element is provided for the lens barrel to align with the electronic photosensitive element. The support element has a first contact surface. The first contact surface surrounds the optical axis and contacts the arm. The holding element is fixed to the support element to fix the lens barrel to the support element. The holding element has a second contact surface. The second contact surface surrounds the optical axis and contacts the arm so that the arm always remains in contact with the first contact surface. The arm is disposed between the support element and the holding element. One of the arm, support element, and holding element is made of a material different from the other two. The first contact surface and the second contact surface do not overlap in a direction parallel to the optical axis. The distance between the side of the first contact surface closest to the second contact surface and the optical axis is D-1tocenter, and the distance between the side of the second contact surface closest to the first contact surface and the optical axis is D-2tocenter. They satisfy the following condition: 0.05 cm ≤ |D-1tocenter-D-2tocenter| ≤ 1.8 cm.

[0008] Another embodiment of this utility model discloses a camera module comprising a lens group, a lens barrel, an arm, an electronic photosensitive element, a support element, and a holding element. The lens group has multiple lenses. These lenses are arranged along an optical axis. The lens barrel carries the lens group. The arm extends from the lens barrel in a direction away from the optical axis. The electronic photosensitive element is disposed on the image side of the lens group. The support element is used to align the lens barrel with the electronic photosensitive element. The support element includes a base and a support element carrier. The support element carrier is disposed on the base. The support element carrier has a first contact surface. The first contact surface surrounds the optical axis and contacts the arm, and the support element carrier carries the lens barrel through the first contact surface. The holding element is fixed to the support element to fix the lens barrel to the support element. The holding element has a second contact surface and a fixing portion. The second contact surface surrounds the optical axis and contacts the arm. The holding element is mounted to the base through the fixing portion. The arm is disposed between the support element and the holding element. One of the arm, support element, and holding element is made of a material different from the other two. The first contact surface and the second contact surface do not overlap in the direction parallel to the optical axis.

[0009] Another embodiment of this utility model discloses a camera module comprising multiple lenses, a lens barrel, an arm, an electronic photosensitive element, a support element, and a holding element. The lenses are arranged along an optical axis. The lens barrel has a barrel wall surrounding the lenses. The arm extends from the barrel wall of the lens barrel in a direction away from the optical axis. The arm has a top surface facing the object side and a bottom surface facing the image side. The electronic photosensitive element is disposed on the image side of the lens barrel. The support element is provided for the lens barrel. The support element includes a base and a support element carrier. The base has a bottom and an annular sidewall. The bottom has a bottom surface facing the arm. The annular sidewall extends from the bottom surface of the bottom towards the arm. The annular sidewall has an annular top surface facing the arm and an annular inner surface facing the lens barrel. The support element carrier is connected to the base. The support element carrier has a reinforcing element and an extension. The reinforcing element includes a first abutment, a connecting portion, and a second abutment. The first abutment abuts against the annular top surface. A connecting portion extends from the first abutment portion in a direction away from the arm portion. A second abutment portion connects to the connecting portion. The second abutment portion is farther from the arm portion than the first abutment portion. An extension portion has a first end portion connected to the second abutment portion and a second end portion extending from the first end portion toward the arm portion. The second end portion contacts the bottom surface of the arm and forms a first contact surface. A holding element is fixed to a support element. The holding element abuts against the top surface of the arm and forms a second contact surface. The length of the inner surface of the ring in the direction parallel to the optical axis is L-toruinsidesurface, and the length of the bottom surface in the direction parallel to the optical axis is L-downsidesurface, which satisfies the following condition: L-toruinsidesurface > L-downsidesurface.

[0010] Another embodiment of the present invention discloses an electronic device that includes the above-described camera module.

[0011] According to the imaging lens, camera module, and electronic device disclosed in the above embodiments, the support element and the holding element can deform to different degrees at different temperatures, generating torque on the arm. This causes the arm to bend slightly and controllably, precisely providing displacement of the at least one lens and the lens barrel in the optical axis direction. This compensates for the difference in back focal length caused by environmental changes, allowing the imaging lens to maintain good optical imaging.

[0012] The above description of the present utility model and the following description of the embodiments are used to demonstrate and explain the principle of the present utility model, and to provide a further explanation of the scope of the patent application of the present utility model. Attached Figure Description

[0013] Figure 1 This is a side cross-sectional view of the imaging lens according to the first embodiment of the present invention.

[0014] Figure 2 yes Figure 1 A magnified schematic diagram of the AA region of the imaging lens.

[0015] Figure 3 yes Figure 1 A magnified diagram of the BB region of the imaging lens.

[0016] Figure 4 This is a side cross-sectional view of the imaging lens according to the second embodiment of the present invention.

[0017] Figure 5 yes Figure 4 A magnified schematic diagram of the CC region of the imaging lens.

[0018] Figure 6 This is a side cross-sectional view of the imaging lens according to the third embodiment of the present invention.

[0019] Figure 7 yes Figure 6 A magnified schematic diagram of the DD region of the imaging lens.

[0020] Figure 8 This is a side cross-sectional view of the imaging lens according to the fourth embodiment of the present invention.

[0021] Figure 9 yes Figure 8 A magnified schematic diagram of the EE region of the imaging lens.

[0022] Figure 10 This is a side cross-sectional view of the imaging lens according to the fifth embodiment of the present invention.

[0023] Figure 11 yes Figure 10 A magnified schematic diagram of the FF region of the imaging lens.

[0024] Figure 12 This is a side cross-sectional view of the imaging lens according to the sixth embodiment of the present invention.

[0025] Figure 13 yes Figure 12 A magnified schematic diagram of the GG region of the imaging lens.

[0026] Figure 14 yes Figure 12 A schematic diagram showing the corresponding component settings of the imaging lens.

[0027] Figure 15 yes Figure 12 A schematic diagram showing the corresponding setup of another component of the imaging lens.

[0028] Figure 16This is a schematic diagram illustrating the corresponding arrangement of components of the imaging lens according to the seventh embodiment of the present invention.

[0029] Figure 17 yes Figure 16 A schematic diagram showing the corresponding setup of another component of the imaging lens.

[0030] Figure 18 This is a side cross-sectional view of the imaging lens according to the eighth embodiment of the present invention.

[0031] Figure 19 yes Figure 18 A magnified schematic diagram of the HH region of the imaging lens.

[0032] Figure 20 yes Figure 19 An exploded view of the imaging lens.

[0033] Figure 21 yes Figure 19 Another exploded view of the imaging lens.

[0034] Figure 22 This is a schematic diagram illustrating the corresponding arrangement of components of the imaging lens according to the ninth embodiment of the present invention.

[0035] Figure 23 yes Figure 22 A schematic diagram showing the corresponding setup of another component of the imaging lens.

[0036] Figure 24 This is a perspective view of an electronic device according to the tenth embodiment of the present invention.

[0037] Figure 25 A perspective view of one side of an electronic device according to the eleventh embodiment of the present invention is shown.

[0038] Figure 26 Draw Figure 25 A three-dimensional diagram of the other side of the electronic device.

[0039] Figure 27 A schematic diagram illustrating the image captured by the ultra-wide-angle camera module.

[0040] Figure 28 A schematic diagram illustrating the image captured by a high-resolution camera module.

[0041] Figure 29 A schematic diagram illustrating the image captured by a telephoto camera module.

[0042] Figure 30 A perspective view of one side of an electronic device according to the twelfth embodiment of the present invention is shown.

[0043] Figure 31 A perspective view of an electronic device according to the thirteenth embodiment of this utility model is shown.

[0044] Figure 32 Draw Figure 31 A side view of the electronic device.

[0045] Figure 33 Draw Figure 31 A top-view diagram of the electronic device.

[0046] [Symbol Explanation]

[0047] 1, 2, 3, 4, 5, 6, 7, 8, 9, 100a, 100b, 200a, 200b, 200c, 200d, 300a, 300b, 300c, 300d, 300e, 300f, 300g, 300h, 300i, 400a: Camera modules

[0048] 10, 20, 30, 40, 50, 60, 80: Imaging lenses

[0049] 11, 21, 31, 41, 51, 61, 81: Lenses

[0050] 111, 211, 311, 411, 511, 611, 711, 811, 911: Optical axis

[0051] 12, 22, 32, 42, 52, 62, 72, 82, 92: Lens tube

[0052] 621, 821: Cylinder wall

[0053] 13, 23, 33, 43, 53, 63, 73, 83, 93: Arm area

[0054] 631, 831: Top surface of the arm

[0055] 632, 832: Bottom surface of the arm

[0056] 43a, 53a, 63a, 83a: Bending surfaces

[0057] 73b: Descending surface

[0058] 83c: Platform

[0059] 14, 24, 34, 44, 54, 64, 84: Supporting elements

[0060] 840a: Base

[0061] 8401: Bottom

[0062] 8401a: Bottom surface

[0063] 8402: Circumferential sidewall

[0064] 8402a: Top surface of the torus

[0065] 8402b: Inner surface of the ring

[0066] 840b: Support element carrier

[0067] 141, 241, 341, 441, 541, 641, 741, 841, 941: First contact surface

[0068] 142, 342, 442, 542, 642, 842: First gap surface

[0069] 843: Third contact surface

[0070] 844: Fourth contact surface

[0071] 6406, 8406: Reinforcing components

[0072] 8406a: First support section

[0073] 8406b: Connecting part

[0074] 8406c: Second closest part

[0075] 8407: Extension

[0076] 8407a: First end

[0077] 8407b: Second end

[0078] 14a, 24a, 44a: Inner surface

[0079] 15, 25, 35, 45, 55, 65, 85: Holding elements; 151, 251, 351, 451, 551, 651, 751, 851, 951: Second contact surfaces; 252, 352: Second gap surfaces.

[0080] 15a, 25a, 35a, 45a, 55a, 65a, 85a: Fixed part

[0081] 26, 56: Connecting elements

[0082] 57: Gap element

[0083] 1a, 2a, 3a, 4a, 5a, 6a, 8a: Photosensitive element group

[0084] CR: Carrier board

[0085] FC: Filter element carrier

[0086] FT: Filter element

[0087] IS: Electronic photosensitive element

[0088] 100, 200, 300, 400: Electronic devices

[0089] 201, 301: Flash module

[0090] 202: Focusing Assist Module

[0091] 203: Image Signal Processor

[0092] 204: Display modules AA, BB, CC, DD, EE, FF, GG, HH: Areas

[0093] AD: Colloid

[0094] AG: Air gap

[0095] LH: Light-transmitting aperture

[0096] SC: Bolt

[0097] α-arm: Coefficient of thermal expansion of the arm; α-arm25: Coefficient of thermal expansion of the arm at 25°C; α-barrel: Coefficient of thermal expansion of the barrel; α-barrel25: Coefficient of thermal expansion of the barrel at 25°C; α-extension: Coefficient of thermal expansion of the extension; α-extension25: Coefficient of thermal expansion of the extension at 25°C.

[0098] α-holder: Coefficient of thermal expansion of the supporting element

[0099] α-holder25: Coefficient of thermal expansion of the support element at 25℃

[0100] α-holder50: Coefficient of thermal expansion of the support element at 50℃

[0101] α-retainer: the coefficient of thermal expansion of the retaining element

[0102] α-retainer25: Coefficient of thermal expansion of the retainer element at 25°C

[0103] D-1tocenter: The distance between the side of the first contact surface closest to the second contact surface and the optical axis.

[0104] D-2tocenter: The distance between the side of the second contact surface closest to the first contact surface and the optical axis.

[0105] D-armtotop: Distance between the arm and the object-side end of the lens barrel.

[0106] D-armtodown: Distance between the arm and the image-side end of the lens barrel

[0107] G-holder: The distance between the first gap surface and the arm in a direction parallel to the optical axis.

[0108] G-retainer: The distance between the second gap surface and the arm in a direction parallel to the optical axis.

[0109] L-2tomount: The distance between the second contact surface and the fixing part in a direction parallel to the optical axis.

[0110] L-holder: The length of the first contact surface on a cross-section parallel to the optical axis.

[0111] L-retainer: The length of the second contact surface on a section parallel to the optical axis.

[0112] T-arm: The thickness of the arm in the direction parallel to the optical axis between the first contact surface and the second contact surface.

[0113] T-barrel: The thickness of the lens barrel in the direction parallel to the optical axis.

[0114] T-bend: Minimum thickness of the arm at the bend surface in a direction parallel to the optical axis.

[0115] L-toruinsidesurface: The length of the inner surface of the ring in the direction parallel to the optical axis.

[0116] L-downsidesurface: The length of the bottom surface in the direction parallel to the optical axis. Detailed Implementation

[0117] The following detailed description of the features and advantages of this utility model in the embodiments is sufficient to enable any person skilled in the art to understand the technical content of this utility model 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 this utility model. The following embodiments further illustrate the viewpoints of this utility model in detail, but are not intended to limit the scope of this utility model in any way.

[0118] This utility model provides a camera module, which includes an imaging lens and a photosensitive element group.

[0119] An imaging lens includes at least one lens, a lens barrel, an arm, a support element, and a holding element. The number of the at least one lens may be multiple, and these lenses form a lens group.

[0120] The at least one lens has an optical axis. The at least one lens is disposed along the optical axis. A lens barrel houses (or carries) the at least one lens. The at least one lens may comprise a plastic lens and a glass lens. This improves optical quality and reduces the impact of the environment on the imaging lens. Furthermore, the glass lens may have a low coefficient of thermal expansion, maintaining optical quality even under environmental changes. In one embodiment, the lens barrel may have a barrel wall surrounding the at least one lens.

[0121] The arm is positioned on the side of the lens barrel furthest from the optical axis. The arm can be fixed to this side using methods such as locking, structural assembly, adhesive application, or welding. Alternatively, the arm can be integrally molded with the lens barrel to reduce the risk of assembly misalignment, improve the yield rate, increase the structural strength between the arm and the lens barrel, and simplify the manufacturing process. However, this invention is not limited to the fixing methods between the arm and the lens barrel. The arm extends from the lens barrel in a direction furthest from the optical axis. In a lens barrel with a wall, the arm can extend from the wall of the lens barrel in a direction furthest from the optical axis. The distance between the arm and the object-side end of the lens barrel can be less than the distance between the arm and the image-side end of the lens barrel. This allows for a reduction in the height of the imaging lens, thereby miniaturizing the camera module. This design allows the arm to be positioned close to the object-side end, providing sufficient space on the image-side side of the arm to provide a support element of a certain length. Furthermore, when the support element has sufficient length, it provides a better expansion effect. The arm may have a top surface facing the object side and a bottom surface facing the image side.

[0122] A support element is fixed to the photosensitive element assembly. This maintains the distance between the imaging lens and the photosensitive element within a specific range and reduces assembly tolerances between the imaging lens and the photosensitive element assembly, thereby improving optical imaging stability. The support element can be fixed to the photosensitive element assembly by means such as locking, structural assembly, adhesive application, or welding. However, this invention is not limited to the fixing means between the support element and the photosensitive element assembly. The support element can be provided with a lens barrel so that the lens barrel corresponds to the photosensitive element. The lens barrel can be fixed to the support element. The support element has a first contact surface. The first contact surface overlaps and contacts the arm portion in a direction parallel to the optical axis.

[0123] Furthermore, the support element may include a base and a support element carrier. The base has a bottom and an annular sidewall. The bottom has a bottom surface facing the arm. The annular sidewall extends from the bottom surface of the bottom towards the arm, and the annular sidewall has an annular top surface facing the arm and an annular inner surface facing the lens barrel. The support element carrier is disposed (or connected) to the base. The support element carrier has the aforementioned first contact surface and a third contact surface. The support element carrier carries the lens barrel through the first contact surface. The support element carrier contacts the base through the third contact surface.

[0124] The support element may have a reinforcing element and an extension. The reinforcing element may overlap with the first contact surface in a direction parallel to the optical axis. This prevents the support element from deforming when the first contact surface is subjected to pressure. The reinforcing element may be made of metal, ceramic, or a composite material containing glass fiber. The reinforcing element may include a first abutment, a connecting portion, and a second abutment. The first abutment abuts against the top surface of the ring. The connecting portion extends from the first abutment in a direction away from the arm. The second abutment connects to the connecting portion. The second abutment is further away from the arm than the first abutment. The reinforcing element may be located between the extension and the ring sidewall. This increases the structural strength of the first and second abutments.

[0125] The extension has a first end connected to the second abutment and a second end extending from the first end toward the arm. The first end contacts the reinforcing element and forms a fourth contact surface, wherein the fourth contact surface is farther away from the arm than the third contact surface. The second end contacts the bottom surface of the arm and forms the aforementioned first contact surface. The extension may be made of a plastic material. The extension has a coefficient of thermal expansion that varies with temperature. The extension is used to move the first contact surface of the support element in a direction parallel to the optical axis. The support element carrier may have the reinforcing element and the support element.

[0126] The retaining element is fixed to the supporting element. The retaining element can be fixed to the supporting element by means such as locking, structural assembly, dispensing, or welding. Note that when the supporting element and the retaining element are fixed by locking, a specific torque can be applied to lock them together, thereby ensuring the connection and mobility between the elements. However, this invention is not limited to the fixing means between the retaining element and the supporting element. The retaining element has a second contact surface. The second contact surface overlaps with and contacts the arm portion in a direction parallel to the optical axis. The second contact surface is located on the opposite side of the first contact surface. The second contact surface ensures that the arm portion and the first contact surface remain in contact at all times. The retaining element reliably abuts against the top surface of the arm and forms the aforementioned second contact surface.

[0127] In the imaging lens, an arm is positioned between the support element and the holding element, and one of the arm, support element, and holding element is made of a different material than the other two. This allows the arm on the outer side of the lens barrel to bend and deform in response to temperature changes, forming a compensation mechanism to overcome temperature effects and enabling the imaging lens to maintain optical quality over a wider range of ambient temperatures. The support element and the holding element are made of different materials.

[0128] In the imaging lens, the first contact surface and the second contact surface surround the optical axis, and the first contact surface and the second contact surface do not overlap in the direction parallel to the optical axis. Therefore, when the ambient temperature changes, one of the first contact surface and the second contact surface can act as a fulcrum, and the arm as a lever arm, allowing the at least one lens and lens barrel to move along the optical axis, thereby compensating for the effects of heat on the imaging lens. The first contact surface and the second contact surface can surround the optical axis, for example, in a completely encircling, C-shaped, or multiple arc-shaped arrangements. However, this invention is not limited to the arrangement of the first contact surface and the second contact surface surrounding the optical axis.

[0129] The above configuration allows the support and holding elements to deform to different degrees at different temperatures, generating torque on the arm and causing a small, controllable bend. This precisely provides the displacement of the at least one lens and the lens barrel along the optical axis. This compensates for the difference in back focal length caused by environmental changes, ensuring the imaging lens maintains good optical imaging.

[0130] Please note that the lens barrel, arm, support element, and holding element may be made of plastic, for example, but this invention is not limited to this.

[0131] The imaging lens disclosed in this invention may further include a connecting element. The connecting element may be formed on the arm. The connecting element may surround the optical axis and form a light-passing aperture. The light-passing aperture may be located at the aperture position of the imaging lens. In this way, the connecting element can connect the support element and the lens barrel, preventing the arm from affecting the lens when bent, thereby improving optical performance.

[0132] According to the camera module disclosed in this utility model, its photosensitive element assembly includes an electronic photosensitive element. The electronic photosensitive element is disposed on the image side of the imaging lens. The photosensitive element assembly may also include components such as a carrier plate, a filter element, and a filter element carrier, but this utility model is not limited thereto.

[0133] The coefficient of thermal expansion of the support element is α-holder, and the coefficient of thermal expansion of the retaining element is α-retainer, both satisfying the condition: α-retainer < α-holder. This maintains the arrangement of the lens barrel, support element, and retaining element, thereby preserving optical quality. Note that the support and retaining elements are not limited to having a positive coefficient of thermal expansion (i.e., thermal expansion and contraction), but may also have a negative coefficient of thermal expansion (i.e., thermal contraction and expansion), or a variable coefficient of thermal expansion exhibiting different expansion characteristics over different temperature ranges. Please note that unless otherwise specified, the coefficients of thermal expansion of each element are measured under standard conditions at one atmosphere and 25°C.

[0134] The distance between the side of the first contact surface closest to the second contact surface and the optical axis is D⁻¹tocenter, and the distance between the side of the second contact surface closest to the first contact surface and the optical axis is D⁻²tocenter. These distances satisfy the following condition: 0.05 cm ≤ |D⁻¹tocenter - D⁻²tocenter| ≤ 1.8 cm. This maintains the stability of the assembly within a specific range. Alternatively, the following conditions may also be satisfied: 0.1 cm ≤ |D⁻¹tocenter - D⁻²tocenter| ≤ 1.8 cm. And also, the following condition may be satisfied: 0.2 cm ≤ |D⁻¹tocenter - D⁻²tocenter| ≤ 1.8 cm.

[0135] The distance between the side of the first contact surface closest to the second contact surface and the optical axis is D⁻¹tocenter, and the distance between the side of the second contact surface closest to the first contact surface and the optical axis is D⁻²tocenter. This distance satisfies the following condition: 0.01 ≤ |D⁻¹tocenter - D⁻²tocenter| / (D⁻¹tocenter + D⁻²tocenter) ≤ 0.145. This provides a sufficient lever arm to move the at least one lens and the lens barrel.

[0136] The coefficient of thermal expansion of the support element is α-holder25 at 25°C and α-holder50 at 50°C, satisfying the following condition: 1.01 ≤ α-holder50 / α-holder25 ≤ 3.63. This allows for optimization within a specific ambient temperature range, thereby optimizing optical quality.

[0137] The coefficient of thermal expansion of the support element is α-holder, and the coefficient of thermal expansion of the retaining element is α-retainer, which can satisfy the following condition: 30ppm / ℃ < α-holder - α-retainer < 240ppm / ℃. In this way, the arrangement relationship between the lens barrel, support element, and retaining element can be maintained under a specific coefficient of thermal expansion, thereby maintaining optical quality.

[0138] The coefficient of thermal expansion of the extension is α-extension, and the coefficient of thermal expansion of the retaining element at 25°C is α-retainer25, which can meet the following conditions: 30ppm / °C≤α-extension-α-retainer25≤240ppm / °C.

[0139] The coefficient of thermal expansion of the retaining element is α-retainer, and the coefficient of thermal expansion of the arm is α-arm, which satisfies the following condition: α-retainer ≤ α-arm. This strengthens the fixation of the lens barrel to the supporting element.

[0140] The coefficient of thermal expansion of the retaining element is α-retainer, that of the arm is α-arm, that of the lens barrel is α-barrel, and that of the support element is α-holder. These coefficients must satisfy the following condition: α-retainer < α-arm ≤ α-barrel < α-holder. This ensures the secure connection between the elements.

[0141] The coefficient of thermal expansion of the lens barrel at 25℃ is α-barrel25, and the coefficient of thermal expansion of the retaining element at 25℃ is α-retainer25. They can satisfy the following condition: α-retainer25 < α-barrel25.

[0142] The thickness of the arm portion between the first and second contact surfaces in the direction parallel to the optical axis is T-arm, which can satisfy the following conditions: 0.15 cm ≤ T-arm ≤ 1.5 cm. This allows the arm portion to have both bending characteristics and sufficient support, thereby ensuring production feasibility. Alternatively, it can also satisfy the following conditions: 0.25 cm ≤ T-arm ≤ 1.5 cm. Alternatively, it can also satisfy the following conditions: 0.25 cm ≤ T-arm ≤ 1.2 cm. Alternatively, it can also satisfy the following conditions: 0.35 cm ≤ T-arm ≤ 1.5 cm. Alternatively, it can also satisfy the following conditions: 0.35 cm ≤ T-arm ≤ 1.2 cm. Alternatively, it can also satisfy the following conditions: 0.35 cm ≤ T-arm ≤ 0.75 cm.

[0143] The arm portion may have a bent surface. The bent surface may be closer to the optical axis than the first contact surface and the second contact surface. The minimum thickness of the arm portion at the bent surface in the direction parallel to the optical axis is T-bend, and the thickness of the arm portion between the first and second contact surfaces in the direction parallel to the optical axis is T-arm, which can satisfy the following condition: 0.333≤T-bend / T-arm≤0.885. This allows control over the degree of deformation of the lens barrel caused by the bending of the arm portion, thereby maintaining optical quality. The thickness of the arm portion in the direction parallel to the optical axis may gradually increase from the bent surface toward the first contact surface. The arm portion may also have a plateau surface. The plateau surface is perpendicular to the optical axis and closer to the optical axis than the bent surface. The thickness of the arm portion at the plateau surface in the direction parallel to the optical axis is greater than the thickness of the arm portion at the bent surface in the direction parallel to the optical axis.

[0144] The minimum thickness of the arm portion at the bend surface in the direction parallel to the optical axis is T-bend, which can satisfy the following condition: 0.15 cm ≤ T-bend ≤ 1 cm.

[0145] The thickness of the arm portion between the first and second contact surfaces in the direction parallel to the optical axis is T-arm, and the thickness of the lens barrel in the direction parallel to the optical axis is T-barrel, which can satisfy the following condition: 0.035≤T-arm / T-barrel≤0.18. This ensures assembly stability.

[0146] The support element may further have a first gap surface. The first gap surface may face the arm. The first gap surface may be adjacent to the first contact surface. The first gap surface may be spaced apart from the arm. The distance between the first gap surface and the arm in the direction parallel to the optical axis is G-holder, which may satisfy the following condition: 0.01 cm ≤ G-holder ≤ 0.4 cm. This avoids the risk of failure to reset after the ambient temperature recovers, thereby ensuring the stability and reliability of the mechanism. The gap formed between the spaced first gap surface and the arm corresponds to the second contact surface in the direction parallel to the optical axis. The imaging lens may further include a gap element. The gap element may be disposed between the first gap surface and the arm, and the gap element may contact the first gap surface and the arm. This allows the gap element to provide functions such as buffering, elastic force, and sealing, optimizing the bending process of the arm, thereby further ensuring the stability and reliability of the mechanism.

[0147] The retaining element may further have a second gap surface. This second gap surface may be adjacent to the second contact surface. The second gap surface may be spaced apart from the arm portion. The distance between the second gap surface and the arm portion in a direction parallel to the optical axis is G-retainer, which satisfies the following condition: 0.01 cm ≤ G-retainer ≤ 0.4 cm. This avoids the risk of failure to reset after the ambient temperature returns to normal, thereby ensuring the stability and reliability of the mechanism.

[0148] The maintaining element may further include a fixing part. The fixing part can be fixed to the supporting element. The maintaining element can be connected to the supporting element via the fixing part. The maintaining element can be mounted on the base of the supporting element via the fixing part. The third contact surface may be closer to the arm than the fixing part. The thickness of the arm in the direction parallel to the optical axis between the first and second contact surfaces is T-arm, and the distance between the second contact surface and the fixing part in the direction parallel to the optical axis is L-2tomount, which can satisfy the following condition: 0.042≤T-arm / L-2tomount≤0.775. This allows for sufficient variation margin between the supporting element and the maintaining element in the optical axis, thereby ensuring the effectiveness of the temperature compensation mechanism.

[0149] The length of the first contact surface in a cross-section parallel to the optical axis is L-holder, and the length of the second contact surface in a cross-section parallel to the optical axis is L-retainer, which can satisfy the following condition: 0.2 < L-retainer / L-holder < 5. Thereby, the stability of the force on the arm can be appropriately improved.

[0150] The length of the inner surface of the ring in the direction parallel to the optical axis is L-toruinsidesurface, and the length of the bottom surface in the direction parallel to the optical axis is L-downsidesurface, which can satisfy the following condition: L-toruinsidesurface > L-downsidesurface.

[0151] In the imaging lens, the support element may further have an inner surface. The inner surface may face the optical axis. An air gap may be formed between the inner surface and the lens barrel. The air gap overlaps the at least one lens in a direction perpendicular to the optical axis. Thereby, while avoiding the deformation of the lens due to pressure, the lens has the freedom of movement in the optical axis direction, thereby ensuring the optical quality. Among them, the air gap may further be formed between the arm and the support element.

[0152] In the imaging lens, the coefficients of thermal expansion (CTE, coefficient of thermal expansion) of the lens barrel, the support element and the maintaining element may be taken from the values in Table 1 and Table 2 below. Among them, the definitions of α-barrel, α-holder25, α-holder and α-retainer are the same as those above and will not be elaborated here.

[0153]

[0154] In Table 1 and Table 2, the lens barrel, the support element and the maintaining element are all made of plastic materials. In addition, the arm may also have the same coefficient of thermal expansion as the lens barrel.

[0155] Please note that in the present invention, if the ambient temperature of the coefficient of thermal expansion is not specifically mentioned, the values are all measured at an ambient temperature of 25°C. Specifically, in general, the definition of α-barrel can be equivalent to the definition of α-barrel25, the definition of α-holder can be equivalent to the definition of α-holder25, the definition of α-retainer can be equivalent to the definition of α-retainer25, the definition of α-arm can be equivalent to the definition of α-arm25 "the coefficient of thermal expansion of the arm at 25°C", and the definition of α-extension can be equivalent to the definition of α-extension25 "the coefficient of thermal expansion of the extension at 25°C".

[0156] The various technical features in the imaging lens and camera module of this utility model can be combined and configured to achieve the corresponding effects.

[0157] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0158] <First Embodiment>

[0159] Please refer to Figures 1 to 3 ,in Figure 1 This is a side cross-sectional view of the imaging lens according to the first embodiment of the present invention. Figure 2 yes Figure 1 A magnified schematic diagram of the AA region of the imaging lens, and Figure 3 yes Figure 1 A magnified diagram of the BB region of the imaging lens.

[0160] This embodiment provides a camera module 1, which includes an imaging lens 10 and a photosensitive element group 1a.

[0161] The imaging lens 10 includes multiple lenses 11, a lens barrel 12, an arm 13, a support element 14, and a holding element 15. The lenses 11 form a lens group (unless otherwise labeled).

[0162] Lens 11 has an optical axis 111. Lens 11 is disposed along optical axis 111. Lens barrel 12 houses (or supports) lens 11. Please note that the number and shape of lenses 11 in the drawings are for illustrative purposes only, and some outlines are omitted to avoid obscuring the focus of this invention. This invention is not limited to the number and shape of lenses 11 shown in the drawings.

[0163] The arm portion 13 is disposed on the side of the lens barrel 12 away from the optical axis 111. The arm portion 13 extends from the lens barrel 12 in a direction away from the optical axis 111. In this embodiment, the arm portion 13 is integrally formed with the lens barrel 12, and in... Figure 1 The boundary between the arm portion 13 and the lens barrel 12 is defined by a dashed line. In this embodiment, the distance between the object-side end of the arm portion 13 and the lens barrel 12 is less than the distance between the image-side end of the arm portion 13 and the lens barrel 12.

[0164] The support element 14 has a first contact surface 141. The first contact surface 141 overlaps with and contacts the arm portion 13 in a direction parallel to the optical axis 111.

[0165] The holding element 15 is fixed to the support element 14 by structural assembly. The holding element 15 has a second contact surface 151. The second contact surface 151 overlaps with and contacts the arm portion 13 in a direction parallel to the optical axis 111. The second contact surface 151 is located on the opposite side of the first contact surface 141. The holding element 15 abuts against the arm portion 13 through the second contact surface 151, so that the arm portion 13 and the first contact surface 141 always remain in contact.

[0166] In the imaging lens 10, the arm 13 is disposed between the support element 14 and the holding element 15. The support element 14 and the holding element 15 are made of different materials. The first contact surface 141 and the second contact surface 151 surround the optical axis 111, and the first contact surface 141 and the second contact surface 151 do not overlap in the direction parallel to the optical axis 111.

[0167] The photosensitive element assembly 1a includes a carrier plate CR and an electronic photosensitive element IS. The carrier plate CR is fixed to the support element 14 by dispensing adhesive AD. The electronic photosensitive element IS is disposed on the carrier plate CR and located on the image side of the imaging lens 10.

[0168] The coefficient of thermal expansion of the lens barrel 12 is α-barrel, the coefficient of thermal expansion of the arm 13 is α-arm, the coefficient of thermal expansion of the support element 14 is α-holder, the coefficient of thermal expansion of the support element 14 at 25℃ is α-holder25, the coefficient of thermal expansion of the support element 14 at 50℃ is α-holder50, and the coefficient of thermal expansion of the retaining element 15 is α-retainer. These coefficients satisfy the following conditions: α-retainer < α-holder; 1.01 ≤ α-holder50 / α-holder25 ≤ 3.63; 30 ppm / ℃ < α-holder - α-retainer < 240 ppm / ℃; α-retainer ≤ α-arm; and α-retainer < α-arm ≤ α-barrel < α-holder. Among these, α-barrel, α-holder, α-holder25, α-holder50, and α-retainer can be taken from the values ​​in Tables 1 and 2 above, and α-arm can be equal to α-barrel.

[0169] The coefficient of thermal expansion of the lens barrel 12 at 25℃ is α-barrel25, and the coefficient of thermal expansion of the retaining element 15 at 25℃ is α-retainer25. They satisfy the following condition: α-retainer25 < α-barrel25.

[0170] The distance between the side of the first contact surface 141 closest to the second contact surface 151 and the optical axis 111 is D-1tocenter, and the distance between the side of the second contact surface 151 closest to the first contact surface 141 and the optical axis 111 is D-2tocenter, which satisfy the following conditions: D-1tocenter = 6.45 cm; D-2tocenter = 6.7 cm; |D-1tocenter - D-2tocenter| = 0.25 cm; and |D-1tocenter - D-2tocenter| / (D-1tocenter + D-2tocenter) = 0.019.

[0171] The distance between the arm 13 and the object-side end of the lens tube 12 is D-armtotop, and the distance between the arm 13 and the image-side end of the lens tube 12 is D-armtodown, which satisfy the following conditions: D-armtotop = 0.67 cm; D-armtodown = 5.98 cm; and D-armtotop <D-armtodown。

[0172] The thickness of the lens barrel 12 in the direction parallel to the optical axis 111 is T-barrel, and the thickness of the arm portion 13 in the direction parallel to the optical axis 111 between the first contact surface 141 and the second contact surface 151 is T-arm, which satisfies the following conditions: T-barrel = 7.15 cm; T-arm = 0.5 cm; and T-arm / T-barrel = 0.0699.

[0173] The support element 14 further includes a first gap surface 142. The first gap surface 142 faces the arm portion 13. The first gap surface 142 is adjacent to the first contact surface 141. The first gap surface 142 is spaced apart from the arm portion 13. The distance between the first gap surface 142 and the arm portion 13 in the direction parallel to the optical axis 111 is G-holder, which satisfies the following condition: G-holder = 0.015 cm. The gap formed between the spaced first gap surface 142 and the arm portion 13 corresponds to the second contact surface 151 in the direction parallel to the optical axis 111.

[0174] The holding element 15 further includes a fixing portion 15a. The fixing portion 15a is fixed to the supporting element 14, such that the holding element 15 is connected to the supporting element 14 through the fixing portion 15a, wherein the fixing portion 15a and the supporting element 14 are, for example, correspondingly concave and convex. The thickness of the arm portion 13 in the direction parallel to the optical axis 111 between the first contact surface 141 and the second contact surface 151 is T-arm, and the distance between the second contact surface 151 and the fixing portion 15a in the direction parallel to the optical axis 111 is L-2tomount, which satisfies the following conditions: T-arm = 0.5 cm; L-2tomount = 2.5 cm; and T-arm / L-2tomount = 0.2.

[0175] The length of the first contact surface 141 on the cross section parallel to the optical axis 111 is L-holder, and the length of the second contact surface 151 on the cross section parallel to the optical axis 111 is L-retainer, which satisfy the following conditions: L-holder = 0.35 cm; L-retainer = 0.35 cm; and L-retainer / L-holder = 1.

[0176] The support element 14 further has an inner surface 14a. The inner surface 14a faces the optical axis 111. An air gap AG is formed between the inner surface 14a and the lens barrel 12. The air gap AG overlaps the lens 11 in a direction perpendicular to the optical axis 111.

[0177] <Second Embodiment>

[0178] Please refer to Figures 4 to 5 ,in Figure 4 This is a side sectional view of the imaging lens according to the second embodiment of the present invention, and Figure 5 yes Figure 4 A magnified schematic diagram of the CC region of the imaging lens.

[0179] This embodiment provides a camera module 2, which includes an imaging lens 20 and a photosensitive element group 2a.

[0180] The imaging lens 20 includes multiple lenses 21, a lens barrel 22, an arm 23, a support element 24, a holding element 25, and a connecting element 26. The lenses 21 form a lens group (unless otherwise labeled).

[0181] Lens 21 has an optical axis 211. Lens 21 is disposed along optical axis 211. Lens tube 22 houses (or supports) lens 21. Please note that the number and shape of lenses 21 in the drawings are for illustrative purposes only, and some outlines are omitted to avoid obscuring the focus of this invention. This invention is not limited to the number and shape of lenses 21 shown in the drawings.

[0182] Arm 23 is disposed on the side of lens barrel 22 away from optical axis 211. Arm 23 extends from lens barrel 22 in a direction away from optical axis 211. In this embodiment, arm 23 is disposed on lens barrel 22 by means of connecting element 26 formed on arm 23 through structural assembly, wherein the fixing points of connecting element 26 and lens barrel 22 are, for example, correspondingly concave and convex, and the fixing points of connecting element 26 and lens barrel 22 are further strengthened on the object side by dispensing adhesive AD. In this embodiment, the distance between arm 23 and the object-side end of lens barrel 22 is less than the distance between arm 23 and the image-side end of lens barrel 22.

[0183] The support element 24 has a first contact surface 241. The first contact surface 241 overlaps with and contacts the arm portion 23 in a direction parallel to the optical axis 211.

[0184] The holding element 25 is fixed to the support element 24 by structural assembly. The holding element 25 has a second contact surface 251. The second contact surface 251 overlaps with and contacts the arm portion 23 in a direction parallel to the optical axis 211. The second contact surface 251 is located on the opposite side of the first contact surface 241. The holding element 25 abuts against the arm portion 23 through the second contact surface 251, so that the arm portion 23 and the first contact surface 241 are always in contact.

[0185] In the imaging lens 20, the arm 23 is disposed between the support element 24 and the holding element 25. The support element 24 and the holding element 25 are made of different materials. The first contact surface 241 and the second contact surface 251 surround the optical axis 211, and the first contact surface 241 and the second contact surface 251 do not overlap in the direction parallel to the optical axis 211.

[0186] The photosensitive element assembly 2a includes a carrier plate CR, an electronic photosensitive element IS, a filter element carrier FC, and a filter element FT. The electronic photosensitive element IS is disposed on the carrier plate CR and located on the image side of the imaging lens 20. The filter element carrier FC is disposed on the carrier plate CR and fixed to the support element 24 by dispensing adhesive AD. The filter element FT is disposed on the filter element carrier FC and located on the object side of the electronic photosensitive element IS.

[0187] The coefficient of thermal expansion of the lens barrel 22 is α-barrel, the coefficient of thermal expansion of the arm 23 is α-arm, the coefficient of thermal expansion of the support element 24 is α-holder, the coefficient of thermal expansion of the support element 24 at 25℃ is α-holder25, the coefficient of thermal expansion of the support element 24 at 50℃ is α-holder50, and the coefficient of thermal expansion of the retaining element 25 is α-retainer. These coefficients satisfy the following conditions: α-retainer < α-holder; 1.01 ≤ α-holder50 / α-holder25 ≤ 3.63; 30 ppm / ℃ < α-holder - α-retainer < 240 ppm / ℃; α-retainer ≤ α-arm; and α-retainer < α-arm ≤ α-barrel < α-holder. Among these, α-barrel, α-holder, α-holder25, α-holder50, and α-retainer can be taken from the values ​​in Tables 1 and 2 above, and α-arm can be equal to α-barrel.

[0188] The coefficient of thermal expansion of the lens barrel 22 at 25℃ is α-barrel25, and the coefficient of thermal expansion of the retaining element 25 at 25℃ is α-retainer25, which satisfies the following condition: α-retainer25 < α-barrel25.

[0189] The distance between the side of the first contact surface 241 closest to the second contact surface 251 and the optical axis 211 is D-1tocenter, and the distance between the side of the second contact surface 251 closest to the first contact surface 241 and the optical axis 211 is D-2tocenter, which satisfy the following conditions: D-1tocenter = 5.6 cm; D-2tocenter = 6.489 cm; |D-1tocenter - D-2tocenter| = 0.889 cm; and |D-1tocenter - D-2tocenter| / (D-1tocenter + D-2tocenter) = 0.0735.

[0190] The distance between the arm 23 and the object-side end of the lens tube 22 is D-armtotop, and the distance between the arm 23 and the image-side end of the lens tube 22 is D-armtodown, which satisfy the following conditions: D-armtotop = 0.67 cm; D-armtodown = 5.98 cm; and D-armtotop <D-armtodown。

[0191] The thickness of the lens barrel 22 in the direction parallel to the optical axis 211 is T-barrel, and the thickness of the arm portion 23 in the direction parallel to the optical axis 211 between the first contact surface 241 and the second contact surface 251 is T-arm, which satisfies the following conditions: T-barrel = 6.245 cm; T-arm = 0.45 cm; and T-arm / T-barrel = 0.0721.

[0192] The retaining element 25 further has a second gap surface 252. The second gap surface 252 is adjacent to the second contact surface 251. The second gap surface 252 is spaced apart from the arm portion 23. The distance between the second gap surface 252 and the arm portion 23 in the direction parallel to the optical axis 211 is G-retainer, which satisfies the following condition: G-retainer = 0.02 cm.

[0193] The holding element 25 further includes a fixing portion 25a. The fixing portion 25a is fixed to the support element 24, such that the holding element 25 is connected to the support element 24 through the fixing portion 25a, wherein the fixing portion 25a and the support element 24 are fixed to each other, for example, in a corresponding snap-fit ​​manner. The thickness of the arm portion 23 in the direction parallel to the optical axis 211 between the first contact surface 241 and the second contact surface 251 is T-arm, and the distance between the second contact surface 251 and the fixing portion 25a in the direction parallel to the optical axis 211 is L-2tomount, which satisfies the following conditions: T-arm = 0.45 cm; L-2tomount = 5.42 cm; and T-arm / L-2tomount = 0.083.

[0194] The length of the first contact surface 241 on the cross section parallel to the optical axis 211 is L-holder, and the length of the second contact surface 251 on the cross section parallel to the optical axis 211 is L-retainer, which satisfy the following conditions: L-holder = 0.73 cm; L-retainer = 0.56 cm; and L-retainer / L-holder = 0.767.

[0195] The support element 24 further has an inner surface 24a. The inner surface 24a faces the optical axis 211. An air gap AG is formed between the inner surface 24a and the lens barrel 22. The air gap AG overlaps with the lens 21 in a direction perpendicular to the optical axis 211.

[0196] <Third Embodiment>

[0197] Please refer to Figures 6 to 7 ,in Figure 6 This is a side sectional view of the imaging lens according to the third embodiment of the present invention, and Figure 7 yes Figure 6A magnified schematic diagram of the DD region of the imaging lens.

[0198] This embodiment provides a camera module 3, which includes an imaging lens 30 and a photosensitive element group 3a.

[0199] The imaging lens 30 includes multiple lenses 31, a lens barrel 32, an arm 33, a support element 34, and a holding element 35. The lenses 31 form a lens group (unless otherwise labeled).

[0200] Lens 31 has an optical axis 311. Lens 31 is disposed along optical axis 311. Lens tube 32 houses (or supports) lens 31. Please note that the number and shape of lenses 31 in the drawings are for illustrative purposes only, and some outlines are omitted to avoid obscuring the focus of this invention. This invention is not limited to the number and shape of lenses 31 shown in the drawings.

[0201] The arm portion 33 is disposed on the side of the lens barrel 32 away from the optical axis 311. The arm portion 33 extends from the lens barrel 32 in a direction away from the optical axis 311. In this embodiment, the arm portion 33 is integrally formed with the lens barrel 32, and in... Figure 6 The boundary between the arm portion 33 and the lens barrel 32 is defined by a dashed line. In this embodiment, the distance between the object-side end of the arm portion 33 and the lens barrel 32 is less than the distance between the image-side end of the arm portion 33 and the lens barrel 32.

[0202] The support element 34 is used to fix the lens barrel 32 so that the lens barrel 32 corresponds to the photosensitive element group 3a. The support element 34 has a first contact surface 341. The first contact surface 341 overlaps with and contacts the arm portion 33 in a direction parallel to the optical axis 311.

[0203] The holding element 35 is fixed to the support element 34 by structural assembly. The holding element 35 has a second contact surface 351. The second contact surface 351 overlaps with and contacts the arm portion 33 in a direction parallel to the optical axis 311. The second contact surface 351 is located on the opposite side of the first contact surface 341. The holding element 35 abuts against the arm portion 33 through the second contact surface 351, so that the arm portion 33 and the first contact surface 341 are always in contact.

[0204] In the imaging lens 30, the arm 33 is disposed between the support element 34 and the holding element 35. The support element 34 and the holding element 35 are made of different materials. The first contact surface 341 and the second contact surface 351 surround the optical axis 311, and the first contact surface 341 and the second contact surface 351 do not overlap in the direction parallel to the optical axis 311.

[0205] The photosensitive element assembly 3a includes a carrier plate CR and an electronic photosensitive element IS. The carrier plate CR is fixed to the support element 34 by bolts SC. The electronic photosensitive element IS is disposed on the carrier plate CR and located on the image side of the imaging lens 30.

[0206] The coefficient of thermal expansion of the lens barrel 32 is α-barrel, the coefficient of thermal expansion of the arm 33 is α-arm, the coefficient of thermal expansion of the support element 34 is α-holder, the coefficient of thermal expansion of the support element 34 at 25℃ is α-holder25, the coefficient of thermal expansion of the support element 34 at 50℃ is α-holder50, and the coefficient of thermal expansion of the retaining element 35 is α-retainer. These coefficients satisfy the following conditions: α-retainer < α-holder; 1.01 ≤ α-holder50 / α-holder25 ≤ 3.63; 30 ppm / ℃ < α-holder - α-retainer < 240 ppm / ℃; α-retainer ≤ α-arm; and α-retainer < α-arm ≤ α-barrel < α-holder. Among these, α-barrel, α-holder, α-holder25, α-holder50, and α-retainer can be taken from the values ​​in Tables 1 and 2 above, and α-arm can be equal to α-barrel.

[0207] The coefficient of thermal expansion of the lens barrel 32 at 25℃ is α-barrel25, and the coefficient of thermal expansion of the retaining element 35 at 25℃ is α-retainer25, which satisfies the following condition: α-retainer25 < α-barrel25.

[0208] The distance between the side of the first contact surface 341 closest to the second contact surface 351 and the optical axis 311 is D-1tocenter, and the distance between the side of the second contact surface 351 closest to the first contact surface 341 and the optical axis 311 is D-2tocenter, which satisfy the following conditions: D-1tocenter = 6.6 cm; D-2tocenter = 6 cm; |D-1tocenter - D-2tocenter| = 0.6 cm; and |D-1tocenter - D-2tocenter| / (D-1tocenter + D-2tocenter) = 0.0476.

[0209] The distance between the arm 33 and the object-side end of the lens tube 32 is D-armtotop, and the distance between the arm 33 and the image-side end of the lens tube 32 is D-armtodown, which satisfy the following conditions: D-armtotop = 0.67 cm; D-armtodown = 5.98 cm; and D-armtotop <D-armtodown。

[0210] The thickness of the lens barrel 32 in the direction parallel to the optical axis 311 is T-barrel, and the thickness of the arm portion 33 in the direction parallel to the optical axis 311 between the first contact surface 341 and the second contact surface 351 is T-arm, which satisfies the following conditions: T-barrel = 7.15 cm; T-arm = 0.5 cm; and T-arm / T-barrel = 0.0699.

[0211] The support element 34 further has a first gap surface 342. The first gap surface 342 faces the arm portion 33. The first gap surface 342 is adjacent to the first contact surface 341. The first gap surface 342 is spaced apart from the arm portion 33. The distance between the first gap surface 342 and the arm portion 33 in a direction parallel to the optical axis 311 is G-holder, which satisfies the following condition: G-holder = 0.015 cm.

[0212] The retaining element 35 further has a second gap surface 352. The second gap surface 352 is adjacent to the second contact surface 351. The second gap surface 352 is spaced apart from the arm portion 33. The distance between the second gap surface 352 and the arm portion 33 in the direction parallel to the optical axis 311 is G-retainer, which satisfies the following condition: G-retainer = 0.015 cm.

[0213] The holding element 35 further includes a fixing portion 35a. The fixing portion 35a is fixed to the supporting element 34, such that the holding element 35 is connected to the supporting element 34 through the fixing portion 35a, wherein the fixing portion 35a and the supporting element 34 are, for example, correspondingly concave and convex. The thickness of the arm portion 33 in the direction parallel to the optical axis 311 between the first contact surface 341 and the second contact surface 351 is T-arm, and the distance between the second contact surface 351 and the fixing portion 35a in the direction parallel to the optical axis 311 is L-2tomount, which satisfy the following conditions: T-arm = 0.5 cm; L-2tomount = 0.91 cm; and T-arm / L-2tomount = 0.549.

[0214] The length of the first contact surface 341 on the cross section parallel to the optical axis 311 is L-holder, and the length of the second contact surface 351 on the cross section parallel to the optical axis 311 is L-retainer, which satisfy the following conditions: L-holder = 0.45 cm; L-retainer = 2 cm; and L-retainer / L-holder = 4.44.

[0215] <Fourth Embodiment>

[0216] Please refer to Figures 8 to 9 ,in Figure 8This is a side sectional view of the imaging lens according to the fourth embodiment of the present invention, and Figure 9 yes Figure 8 A magnified schematic diagram of the EE region of the imaging lens.

[0217] This embodiment provides a camera module 4, which includes an imaging lens 40 and a photosensitive element group 4a.

[0218] The imaging lens 40 includes multiple lenses 41, a lens barrel 42, an arm 43, a support element 44, and a holding element 45. The lenses 41 form a lens group (unless otherwise labeled).

[0219] Lens 41 has an optical axis 411. Lens 41 is disposed along optical axis 411. Lens tube 42 houses (or supports) lens 41. Please note that the number and shape of lenses 41 in the drawings are for illustrative purposes only, and some outlines are omitted to avoid obscuring the focus of this invention. This invention is not limited to the number and shape of lenses 41 shown in the drawings.

[0220] The arm portion 43 is disposed on the side of the lens barrel 42 away from the optical axis 411. The arm portion 43 extends from the lens barrel 42 in a direction away from the optical axis 411. In this embodiment, the arm portion 43 is integrally formed with the lens barrel 42, and in... Figure 8 The boundary between the arm portion 43 and the lens barrel 42 is defined by a dotted line. In this embodiment, the distance between the object-side ends of the arm portion 43 and the lens barrel 42 is less than the distance between the image-side ends of the arm portion 43 and the lens barrel 42.

[0221] The support element 44 has a first contact surface 441. The first contact surface 441 overlaps with and contacts the arm portion 43 in a direction parallel to the optical axis 411.

[0222] The retaining element 45 is fixed to the supporting element 44 by structural assembly, and the fixation is reinforced by adhesive AD. The retaining element 45 has a second contact surface 451. The second contact surface 451 overlaps with and contacts the arm portion 43 in a direction parallel to the optical axis 411. The second contact surface 451 is located on the opposite side of the first contact surface 441. The retaining element 45 abuts against the arm portion 43 through the second contact surface 451, so that the arm portion 43 and the first contact surface 441 are always in contact.

[0223] In the imaging lens 40, the arm 43 is disposed between the support element 44 and the holding element 45. The support element 44 and the holding element 45 are made of different materials. The first contact surface 441 and the second contact surface 451 surround the optical axis 411, and the first contact surface 441 and the second contact surface 451 do not overlap in the direction parallel to the optical axis 411.

[0224] The photosensitive element assembly 4a includes a carrier plate CR, an electronic photosensitive element IS, a filter element carrier FC, and a filter element FT. The carrier plate CR is fixed to the support element 44 by dispensing adhesive AD. The electronic photosensitive element IS is disposed on the carrier plate CR and located on the image side of the imaging lens 40. The filter element carrier FC is disposed on the carrier plate CR. The filter element FT is disposed on the filter element carrier FC and located on the object side of the electronic photosensitive element IS.

[0225] The coefficient of thermal expansion of the lens barrel 42 is α-barrel, the coefficient of thermal expansion of the arm 43 is α-arm, the coefficient of thermal expansion of the support element 44 is α-holder, the coefficient of thermal expansion of the support element 44 at 25℃ is α-holder25, the coefficient of thermal expansion of the support element 44 at 50℃ is α-holder50, and the coefficient of thermal expansion of the retaining element 45 is α-retainer. These coefficients satisfy the following conditions: α-retainer < α-holder; 1.01 ≤ α-holder50 / α-holder25 ≤ 3.63; 30 ppm / ℃ < α-holder - α-retainer < 240 ppm / ℃; α-retainer ≤ α-arm; and α-retainer < α-arm ≤ α-barrel < α-holder. Among these, α-barrel, α-holder, α-holder25, α-holder50, and α-retainer can be taken from the values ​​in Tables 1 and 2 above, and α-arm can be equal to α-barrel.

[0226] The coefficient of thermal expansion of the lens barrel 42 at 25℃ is α-barrel25, and the coefficient of thermal expansion of the retaining element 45 at 25℃ is α-retainer25. They satisfy the following condition: α-retainer25 < α-barrel25.

[0227] The distance between the side of the first contact surface 441 closest to the second contact surface 451 and the optical axis 411 is D-1tocenter, and the distance between the side of the second contact surface 451 closest to the first contact surface 441 and the optical axis 411 is D-2tocenter, which satisfy the following conditions: D-1tocenter = 5.84 cm; D-2tocenter = 6.4 cm; |D-1tocenter - D-2tocenter| = 0.56 cm; and |D-1tocenter - D-2tocenter| / (D-1tocenter + D-2tocenter) = 0.0458.

[0228] The distance between the arm 43 and the object-side end of the lens tube 42 is D-armtotop, and the distance between the arm 43 and the image-side end of the lens tube 42 is D-armtodown, which satisfy the following conditions: D-armtotop = 0.67 cm; D-armtodown = 5.98 cm; and D-armtotop <D-armtodown。

[0229] The thickness of the lens barrel 42 in the direction parallel to the optical axis 411 is T-barrel, and the thickness of the arm portion 43 in the direction parallel to the optical axis 411 between the first contact surface 441 and the second contact surface 451 is T-arm, which satisfies the following conditions: T-barrel = 7.15 cm; T-arm = 0.65 cm; and T-arm / T-barrel = 0.0910.

[0230] The arm portion 43 has a bent surface 43a. The bent surface 43a is closer to the optical axis 411 than the first contact surface 441 and the second contact surface 451. The minimum thickness of the arm portion 43 at the bent surface 43a in the direction parallel to the optical axis 411 is T-bend, and the thickness of the arm portion 43 between the first contact surface 441 and the second contact surface 451 in the direction parallel to the optical axis 411 is T-arm, which satisfies the following conditions: T-bend = 0.5 cm; T-arm = 0.65 cm; and T-bend / T-arm = 0.769. The thickness of the arm portion 43 in the direction parallel to the optical axis 411 gradually increases from the bent surface 43a toward the first contact surface 441.

[0231] The support element 44 further has a first gap surface 442. The first gap surface 442 faces the arm portion 43. The first gap surface 442 is adjacent to the first contact surface 441. The first gap surface 442 and the arm portion 43 are spaced apart. The distance between the first gap surface 442 and the arm portion 43 in the direction parallel to the optical axis 411 is G-holder, which satisfies the following condition: G-holder = 0.017 cm. The gap formed between the spaced first gap surface 442 and the arm portion 43 corresponds to the second contact surface 451 in the direction parallel to the optical axis 411.

[0232] The holding element 45 further includes a fixing portion 45a. The fixing portion 45a is fixed to the supporting element 44, such that the holding element 45 is connected to the supporting element 44 through the fixing portion 45a, wherein the fixing portion 45a and the supporting element 44 are fixed to each other, for example, in a corresponding snap-fit ​​manner. The thickness of the arm portion 43 in the direction parallel to the optical axis 411 between the first contact surface 441 and the second contact surface 451 is T-arm, and the distance between the second contact surface 451 and the fixing portion 45a in the direction parallel to the optical axis 411 is L-2tomount, which satisfies the following conditions: T-arm = 0.65 cm; L-2tomount = 2.66 cm; and T-arm / L-2tomount = 0.244.

[0233] The length of the first contact surface 441 on the cross section parallel to the optical axis 411 is L-holder, and the length of the second contact surface 451 on the cross section parallel to the optical axis 411 is L-retainer, which satisfy the following conditions: L-holder = 0.67 cm; L-retainer = 0.45 cm; and L-retainer / L-holder = 0.672.

[0234] The support element 44 further has an inner surface 44a. The inner surface 44a faces the optical axis 411. An air gap AG is formed between the inner surface 44a and the lens barrel 42. The air gap AG overlaps the lens 41 in a direction perpendicular to the optical axis 411. The air gap AG is also formed between the arm portion 43 and the support element 44.

[0235] <Fifth Embodiment>

[0236] Please refer to Figures 10 to 11 ,in Figure 10 This is a side sectional view of the imaging lens according to the fifth embodiment of the present invention, and Figure 11 yes Figure 10 A magnified schematic diagram of the FF region of the imaging lens.

[0237] This embodiment provides a camera module 5, which includes an imaging lens 50 and a photosensitive element group 5a.

[0238] The imaging lens 50 includes multiple lenses 51, a lens barrel 52, an arm 53, a support element 54, a holding element 55, and a connecting element 56. The lenses 51 form a lens group (unless otherwise labeled).

[0239] Lens 51 has an optical axis 511. Lens 51 is disposed along optical axis 511. Lens barrel 52 houses (or supports) lens 51. Please note that the number and shape of lenses 51 in the drawings are for illustrative purposes only, and some outlines are omitted to avoid obscuring the focus of this invention. This invention is not limited to the number and shape of lenses 51 shown in the drawings.

[0240] An arm portion 53 is disposed on the side of the lens barrel 52 away from the optical axis 511. The arm portion 53 extends from the lens barrel 52 in a direction away from the optical axis 511. In this embodiment, the arm portion 53 is disposed on the lens barrel 22 by dispensing adhesive AD through a connecting element 56 formed on the arm portion 53. In this embodiment, the distance between the arm portion 53 and the object-side end of the lens barrel 52 is less than the distance between the arm portion 53 and the image-side end of the lens barrel 52.

[0241] The support element 54 is used to fix the lens barrel 52 so that the lens barrel 52 corresponds to the photosensitive element group 5a. The support element 54 has a first contact surface 541. The first contact surface 541 overlaps with and contacts the arm portion 53 in a direction parallel to the optical axis 511.

[0242] The holding element 55 is fixed to the support element 54 by structural assembly. The holding element 55 has a second contact surface 551. The second contact surface 551 overlaps with and contacts the arm portion 53 in a direction parallel to the optical axis 511. The second contact surface 551 is located on the opposite side of the first contact surface 541. The holding element 55 abuts against the arm portion 53 through the second contact surface 551, so that the arm portion 53 and the first contact surface 541 always remain in contact.

[0243] Connecting element 56 surrounds optical axis 511 and forms a light-passing aperture LH. The light-passing aperture LH is located at the aperture position of imaging lens 50.

[0244] In the imaging lens 50, the arm 53 is disposed between the support element 54 and the holding element 55. The support element 54 and the holding element 55 are made of different materials. The first contact surface 541 and the second contact surface 551 surround the optical axis 511, and the first contact surface 541 and the second contact surface 551 do not overlap in the direction parallel to the optical axis 511.

[0245] The photosensitive element assembly 5a includes a carrier plate CR, an electronic photosensitive element IS, and a filter element FT. A support element 54 passes through the carrier plate CR. The electronic photosensitive element IS is disposed on the carrier plate CR and located on the image side of the imaging lens 50. The filter element FT is located on the object side of the electronic photosensitive element IS.

[0246] The coefficient of thermal expansion of the lens barrel 52 is α-barrel, the coefficient of thermal expansion of the arm 53 is α-arm, the coefficient of thermal expansion of the support element 54 is α-holder, the coefficient of thermal expansion of the support element 54 at 25℃ is α-holder25, the coefficient of thermal expansion of the support element 54 at 50℃ is α-holder50, and the coefficient of thermal expansion of the retaining element 55 is α-retainer. These coefficients satisfy the following conditions: α-retainer < α-holder; 1.01 ≤ α-holder50 / α-holder25 ≤ 3.63; 30 ppm / ℃ < α-holder - α-retainer < 240 ppm / ℃; α-retainer ≤ α-arm; and α-retainer < α-arm ≤ α-barrel < α-holder. Among these, α-barrel, α-holder, α-holder25, α-holder50, and α-retainer can be taken from the values ​​in Tables 1 and 2 above, and α-arm can be equal to α-barrel.

[0247] The coefficient of thermal expansion of the lens barrel 52 at 25℃ is α-barrel25, and the coefficient of thermal expansion of the retaining element 55 at 25℃ is α-retainer25. They satisfy the following condition: α-retainer25 < α-barrel25.

[0248] The distance between the side of the first contact surface 541 closest to the second contact surface 551 and the optical axis 511 is D-1tocenter, and the distance between the side of the second contact surface 551 closest to the first contact surface 541 and the optical axis 511 is D-2tocenter, which satisfy the following conditions: D-1tocenter = 6.55 cm; D-2tocenter = 6.85 cm; |D-1tocenter - D-2tocenter| = 0.3 cm; and |D-1tocenter - D-2tocenter| / (D-1tocenter + D-2tocenter) = 0.0224.

[0249] The distance between the arm 53 and the object-side end of the lens tube 52 is D-armtotop, and the distance between the arm 53 and the image-side end of the lens tube 52 is D-armtodown, which satisfy the following conditions: D-armtotop = 0.67 cm; D-armtodown = 5.965 cm; and D-armtotop <D-armtodown。

[0250] The thickness of the lens barrel 52 in the direction parallel to the optical axis 511 is T-barrel, and the thickness of the arm portion 53 in the direction parallel to the optical axis 511 between the first contact surface 541 and the second contact surface 551 is T-arm, which satisfies the following conditions: T-barrel = 6.49 cm; T-arm = 0.515 cm; and T-arm / T-barrel = 0.0794.

[0251] The arm portion 53 has a bent surface 53a. The bent surface 53a is closer to the optical axis 511 than the first contact surface 541 and the second contact surface 551. The minimum thickness of the arm portion 53 at the bent surface 53a in the direction parallel to the optical axis 511 is T-bend, and the thickness of the arm portion 53 between the first contact surface 541 and the second contact surface 551 in the direction parallel to the optical axis 511 is T-arm, which satisfies the following conditions: T-bend = 0.3 cm; T-arm = 0.515 cm; and T-bend / T-arm = 0.583. The thickness of the arm portion 53 in the direction parallel to the optical axis 511 gradually increases from the bent surface 53a toward the first contact surface 541.

[0252] The support element 54 further includes a first gap surface 542. The first gap surface 542 faces the arm portion 53. The first gap surface 542 is adjacent to the first contact surface 541. The first gap surface 542 is spaced apart from the arm portion 53. The distance between the first gap surface 542 and the arm portion 53 in the direction parallel to the optical axis 511 is G-holder, which satisfies the following condition: G-holder = 0.2 cm. The gap formed between the spaced first gap surface 542 and the arm portion 53 corresponds to the second contact surface 551 in the direction parallel to the optical axis 511. The imaging lens 50 also includes a gap element 57. The gap element 57 is disposed between the first gap surface 542 and the arm portion 53, and the gap element 57 contacts the first gap surface 542 and the arm portion 53.

[0253] The holding element 55 further includes a fixing portion 55a. The fixing portion 55a is fixed to the supporting element 54, such that the holding element 55 is connected to the supporting element 54 through the fixing portion 55a, wherein the fixing portion 55a and the supporting element 54 are, for example, correspondingly concave and convex. The thickness of the arm portion 53 in the direction parallel to the optical axis 511 between the first contact surface 541 and the second contact surface 551 is T-arm, and the distance between the second contact surface 551 and the fixing portion 55a in the direction parallel to the optical axis 511 is L-2tomount, which satisfies the following conditions: T-arm = 0.515 cm; L-2tomount = 3.33 cm; and T-arm / L-2tomount = 0.155.

[0254] The length of the first contact surface 541 on the cross section parallel to the optical axis 511 is L-holder, and the length of the second contact surface 551 on the cross section parallel to the optical axis 511 is L-retainer, which satisfy the following conditions: L-holder = 0.45 cm; L-retainer = 0.2 cm; and L-retainer / L-holder = 0.444.

[0255] <Sixth Embodiment>

[0256] Please refer to Figures 12 to 15 ,in Figure 12 This is a side cross-sectional view of the imaging lens according to the sixth embodiment of the present invention. Figure 13 yes Figure 12 A magnified diagram of the GG region of the imaging lens. Figure 14 yes Figure 12 A schematic diagram showing the corresponding component settings of the imaging lens, and Figure 15 yes Figure 12 A schematic diagram showing the corresponding setup of another component of the imaging lens.

[0257] This embodiment provides a camera module 6, which includes an imaging lens 60 and a photosensitive element group 6a.

[0258] The imaging lens 60 includes multiple lenses 61, a lens barrel 62, an arm 63, a support element 64, and a holding element 65. The lenses 61 form a lens group (unless otherwise labeled).

[0259] Lens 61 has an optical axis 611. Lens 61 is disposed along optical axis 611. Lens barrel 62 houses (or carries) lens 61. Alternatively, lens barrel 62 has a barrel wall 621, and the barrel wall 621 surrounds lens 61. Note that the number and shape of lenses 61 in the accompanying drawings are for illustrative purposes only, and some outlines have been omitted to avoid obscuring the focus of this case.

[0260] This invention is not limited to the number and shape of the lenses 61 shown in the accompanying drawings.

[0261] An arm portion 63 is disposed on the side of the lens barrel 62 away from the optical axis 611. The arm portion 63 extends from the barrel wall 621 of the lens barrel 62 in a direction away from the optical axis 611. In this embodiment, the arm portion 63 is integrally formed with the lens barrel 62 and... Figure 12 The boundary between the arm portion 63 and the lens barrel 62 is defined by a dotted line. In this embodiment, the distance between the object-side ends of the arm portion 63 and the lens barrel 62 is less than the distance between the image-side ends of the arm portion 63 and the lens barrel 62. The arm portion 63 has a top surface 631 facing the object side and a bottom surface 632 facing the image side.

[0262] A support element 64 is fixedly disposed on the barrel wall 621 of the lens barrel 62 so that the lens barrel 62 corresponds to the photosensitive element assembly 6a. The support element 64 has a first contact surface 641. The first contact surface 641 overlaps with and contacts the arm portion 63 in a direction parallel to the optical axis 611. Please refer to... Figure 15 This is a schematic diagram showing the first contact surface 641 and the arm portion 63 overlapping and correspondingly arranged, wherein the first contact surface 641 completely surrounds the optical axis 611. Please note. Figure 15 Only the portion of the support element 64 forming the first contact surface 641 is shown in the figure to highlight the corresponding arrangement between the elements.

[0263] The support element 64 has a reinforcing element 6406. The reinforcing element 6406 overlaps with the first contact surface 641 in a direction parallel to the optical axis 611.

[0264] The retaining element 65 is fixed to the supporting element 64 by structural assembly, and the fixing relationship is reinforced by adhesive AD. The retaining element 65 has a second contact surface 651. The second contact surface 651 overlaps with and contacts the arm portion 63 in a direction parallel to the optical axis 611. Please refer to... Figure 14 This is a schematic diagram showing the second contact surface 651 and the arm portion 63 overlapping and correspondingly arranged, wherein the second contact surface 651 completely surrounds the optical axis 611. Please note. Figure 14 Only the portion of the retaining element 65 forming the second contact surface 651 is shown in the diagram to highlight the corresponding arrangement between the elements. Please refer to... Figure 12 and Figure 13 The second contact surface 651 is located on the opposite side of the first contact surface 641. The holding element 65 abuts against the arm portion 63 via the second contact surface 651, so that the arm portion 63 and the first contact surface 641 are always in contact. Furthermore, the holding element 65 abuts against the top surface 631 of the arm and forms the second contact surface 651.

[0265] In the imaging lens 60, the arm 63 is disposed between the support element 64 and the holding element 65. One of the arm 63, the support element 64 and the holding element 65 is made of a material different from the other two. The first contact surface 641 and the second contact surface 651 surround the optical axis 611, and the first contact surface 641 and the second contact surface 651 do not overlap in the direction parallel to the optical axis 611.

[0266] The photosensitive element assembly 6a includes a carrier plate CR, an electronic photosensitive element IS, and a filter element FT. The carrier plate CR is fixed to the support element 64 by dispensing adhesive AD. The electronic photosensitive element IS is disposed on the carrier plate CR and located on the image side of the imaging lens 60. The filter element FT is located on the object side of the electronic photosensitive element IS.

[0267] The coefficient of thermal expansion of the lens barrel 62 is α-barrel, the coefficient of thermal expansion of the arm 63 is α-arm, the coefficient of thermal expansion of the support element 64 is α-holder, the coefficient of thermal expansion of the support element 64 at 25℃ is α-holder25, the coefficient of thermal expansion of the support element 64 at 50℃ is α-holder50, and the coefficient of thermal expansion of the retaining element 65 is α-retainer. These coefficients satisfy the following conditions: α-retainer < α-holder; 1.01 ≤ α-holder50 / α-holder25 ≤ 3.63; 30 ppm / ℃ < α-holder - α-retainer < 240 ppm / ℃; α-retainer ≤ α-arm; and α-retainer < α-arm ≤ α-barrel < α-holder. Among these, α-barrel, α-holder, α-holder25, α-holder50, and α-retainer can be taken from the values ​​in Tables 1 and 2 above, and α-arm can be equal to α-barrel.

[0268] The thermal expansion coefficient of the lens barrel 62 at 25℃ is α-barrel25, and the thermal expansion coefficient of the retaining element 65 at 25℃ is α-retainer25, which satisfies the following condition: α-retainer25 < α-barrel25.

[0269] The distance between the side of the first contact surface 641 closest to the second contact surface 651 and the optical axis 611 is D-1tocenter, and the distance between the side of the second contact surface 651 closest to the first contact surface 641 and the optical axis 611 is D-2tocenter, which satisfy the following conditions: D-1tocenter = 5.07 cm; D-2tocenter = 5.6 cm; |D-1tocenter - D-2tocenter| = 0.53 cm; and |D-1tocenter - D-2tocenter| / (D-1tocenter + D-2tocenter) = 0.0497.

[0270] The distance between the arm 63 and the object-side end of the lens barrel 62 is D-armtotop, and the distance between the arm 63 and the image-side end of the lens barrel 62 is D-armtodown, which satisfy the following conditions: D-armtotop = 0.455 cm; D-armtodown = 5.15 cm; and D-armtotop <D-armtodown。

[0271] The thickness of the lens barrel 62 in the direction parallel to the optical axis 611 is T-barrel, and the thickness of the arm 63 in the direction parallel to the optical axis 611 between the first contact surface 641 and the second contact surface 651 is T-arm, which satisfies the following conditions: T-barrel = 6.255 cm; T-arm = 0.65 cm; and T-arm / T-barrel = 0.104.

[0272] The arm portion 63 has a bent surface 63a. The bent surface 63a is closer to the optical axis 611 than the first contact surface 641 and the second contact surface 651. The minimum thickness of the arm portion 63 at the bent surface 63a in the direction parallel to the optical axis 611 is T-bend, and the thickness of the arm portion 63 between the first contact surface 641 and the second contact surface 651 in the direction parallel to the optical axis 611 is T-arm, which satisfies the following conditions: T-bend = 0.3 cm; T-arm = 0.65 cm; and T-bend / T-arm = 0.462. The thickness of the arm portion 63 in the direction parallel to the optical axis 611 gradually increases from the bent surface 63a toward the first contact surface 641.

[0273] The support element 64 further includes a first gap surface 642. The first gap surface 642 faces the arm portion 63. The first gap surface 642 is adjacent to the first contact surface 641. The first gap surface 642 is spaced apart from the arm portion 63. The distance between the first gap surface 642 and the arm portion 63 in the direction parallel to the optical axis 611 is G-holder, which satisfies the following condition: G-holder = 0.35 cm. The gap formed between the spaced first gap surface 642 and the arm portion 63 corresponds to the second contact surface 651 in the direction parallel to the optical axis 611.

[0274] The holding element 65 further includes a fixing portion 65a. The fixing portion 65a is fixed to the supporting element 64, such that the holding element 65 is connected to the supporting element 64 through the fixing portion 65a, wherein the fixing portion 65a and the supporting element 64 are, for example, correspondingly concave and convex. The thickness of the arm portion 63 in the direction parallel to the optical axis 611 between the first contact surface 641 and the second contact surface 651 is T-arm, and the distance between the second contact surface 651 and the fixing portion 65a in the direction parallel to the optical axis 611 is L-2tomount, which satisfies the following conditions: T-arm = 0.65 cm; L-2tomount = 3.18 cm; and T-arm / L-2tomount = 0.204.

[0275] The length of the first contact surface 641 on the cross section parallel to the optical axis 611 is L-holder, and the length of the second contact surface 651 on the cross section parallel to the optical axis 611 is L-retainer, which satisfy the following conditions: L-holder = 0.25 cm; L-retainer = 0.23 cm; and L-retainer / L-holder = 0.92.

[0276] In this embodiment, the first contact surface 641 and the second contact surface 651 each completely surround the optical axis 611. However, this invention is not limited thereto. Please refer to the seventh embodiment.

[0277] <Seventh Embodiment>

[0278] Please refer to Figures 16 to 17 ,in Figure 16 This is a schematic diagram illustrating the corresponding arrangement of components of the imaging lens according to the seventh embodiment of the present invention, and Figure 17 yes Figure 16 A schematic diagram showing the corresponding setup of another component of the imaging lens.

[0279] This embodiment provides a camera module 7, which is similar to the camera module 6 of the sixth embodiment. Therefore, the description of features that are the same or similar to those of camera module 7 and camera module 6 will be omitted.

[0280] In this embodiment, the arm portion 73 has two step structures (not shown) on the side near the image-side end of the lens barrel 72. Each step structure has a descending surface 73b. Support elements (not labeled) are spaced apart from the arm portion 73 at the descending surface 73b, such that the first contact surfaces 741 are arranged in an arc around the optical axis 711, as shown below. Figure 17 As shown.

[0281] In this embodiment, the arm portion 73, on the side near the object-side end of the lens barrel 72, still overlaps with the second contact surface 751 of the holding element (not otherwise labeled) in a direction parallel to the optical axis 711, such that the second contact surface 751 completely surrounds the optical axis 711, as shown below. Figure 16 As shown.

[0282] Please note Figure 16 and Figure 17 Only the portion of the support element forming the first contact surface 741 and the portion of the holding element forming the second contact surface 751 are shown in the figure to highlight the corresponding arrangement between the elements.

[0283] <Eighth Embodiment>

[0284] Please refer to Figures 18 to 21 ,in Figure 18This is a side cross-sectional view of the imaging lens according to the eighth embodiment of the present invention. Figure 19 yes Figure 18 A magnified schematic diagram of the HH region of the imaging lens. Figure 20 yes Figure 19 An exploded view of the imaging lens, and Figure 21 yes Figure 19 Another exploded view of the imaging lens.

[0285] This embodiment provides a camera module 8, which includes an imaging lens 80 and a photosensitive element group 8a.

[0286] The imaging lens 80 includes multiple lenses 81, a lens barrel 82, an arm 83, a support element 84, and a holding element 85. The lenses 81 form a lens group (unless otherwise labeled).

[0287] Lens 81 has an optical axis 811. Lens 81 is positioned along the optical axis 811. Lens barrel 82 houses (or supports) lens 81. Alternatively, lens barrel 82 has a barrel wall 821 that surrounds lens 81. Note that the number and shape of lenses 81 in the accompanying drawings are for illustrative purposes only, and some outlines have been omitted to avoid obscuring the focus of this discussion.

[0288] This invention is not limited to the number and shape of the lenses 81 shown in the accompanying drawings.

[0289] An arm portion 83 is disposed on the side of the lens barrel 82 away from the optical axis 811. The arm portion 83 extends from the barrel wall 821 of the lens barrel 82 in a direction away from the optical axis 811. In this embodiment, the arm portion 83 is integrally formed with the lens barrel 82 and... Figure 12 The boundary between the arm portion 83 and the lens barrel 82 is defined by a dotted line. In this embodiment, the distance between the object-side end of the arm portion 83 and the lens barrel 82 is less than the distance between the image-side end of the arm portion 83 and the lens barrel 82. The arm portion 83 has a top surface 831 facing the object side and a bottom surface 832 facing the image side.

[0290] The support element 84 is fixedly disposed on the barrel wall 821 of the lens barrel 82 so that the lens barrel 82 corresponds to the photosensitive element assembly 8a. The support element 84 has a first contact surface 841. The first contact surface 841 overlaps with and contacts the arm portion 83 in a direction parallel to the optical axis 811, wherein the first contact surface 841 completely surrounds the optical axis 811.

[0291] Specifically, the support element 84 includes a base 840a and a support element carrier 840b. The base 840a has a bottom 8401 and an annular sidewall 8402. The bottom 8401 has a bottom surface 8401a facing the arm portion 83. The annular sidewall 8402 extends from the bottom surface 8401a of the bottom 8401 toward the arm portion 83, and the annular sidewall 8402 has an annular top surface 8402a facing the arm portion 83 and an annular inner surface 8402b facing the lens barrel 82.

[0292] The support element carrier 840b is disposed (or connected) on the base 840a. The support element carrier 840b has the aforementioned first contact surface 841. The support element carrier 840b supports the lens barrel 82 through the first contact surface 841 and the arm portion 83.

[0293] Specifically, the support element carrier 840b has a reinforcing element 8406 and an extension 8407. The reinforcing element 8406 overlaps with the first contact surface 841 in a direction parallel to the optical axis 811. The reinforcing element 8406 includes a first abutting portion 8406a, a connecting portion 8406b, and a second abutting portion 8406c. The first abutting portion 8406a has a third contact surface 843. The first abutting portion 8406a abuts against the ring top surface 8402a of the ring sidewall 8402 via the third contact surface 843. The connecting portion 8406b extends from the first abutting portion 8406a in a direction away from the arm portion 83. The second abutting portion 8406c connects to the connecting portion 8406b. The second abutting portion 8406c is farther from the arm portion 83 than the first abutting portion 8406a. The reinforcing element 8406 is located between the extension 8407 and the ring sidewall 8402.

[0294] The extension 8407 has a first end portion 8407a connected to the second abutment portion 8406c and a second end portion 8407b extending from the first end portion 8407a toward the arm portion 83. The first end portion 8407a contacts the reinforcing element 8406 and forms a fourth contact surface 844, which is further away from the arm portion 83 than the third contact surface 843. The second end portion 8407b contacts the bottom surface 832 of the arm and forms the aforementioned first contact surface 841. The extension 8407 is used to move the first contact surface 841 of the support element 84 along a direction parallel to the optical axis 811.

[0295] The retaining element 85 is fixed to the supporting element 84 by structural assembly, and the fixation is reinforced by adhesive AD. The retaining element 85 has a second contact surface 851. The second contact surface 851 overlaps with and contacts the arm portion 83 in a direction parallel to the optical axis 811, wherein the second contact surface 851 completely surrounds the optical axis 811. The second contact surface 851 is located on the opposite side of the first contact surface 841. The retaining element 85 abuts against the arm portion 83 through the second contact surface 851, so that the arm portion 83 and the first contact surface 841 are always in contact. Furthermore, the retaining element 85 abuts against the top surface 831 of the arm and forms the second contact surface 851.

[0296] In the imaging lens 80, the arm 83 is disposed between the support element 84 and the holding element 85. One of the arm 83, the support element 84 and the holding element 85 is made of a material different from the other two. The first contact surface 841 and the second contact surface 851 surround the optical axis 811, and the first contact surface 841 and the second contact surface 851 do not overlap in the direction parallel to the optical axis 811.

[0297] The photosensitive element assembly 8a includes a carrier plate CR, an electronic photosensitive element IS, and a filter element FT. The carrier plate CR is fixed to the support element 84 by dispensing adhesive AD. The electronic photosensitive element IS is disposed on the carrier plate CR and located on the image side of the imaging lens 80. The filter element FT is located on the object side of the electronic photosensitive element IS.

[0298] The coefficient of thermal expansion of the lens barrel 82 is α-barrel, the coefficient of thermal expansion of the arm 83 is α-arm, the coefficient of thermal expansion of the support element 84 is α-holder, the coefficient of thermal expansion of the support element 84 at 25℃ is α-holder25, the coefficient of thermal expansion of the support element 84 at 50℃ is α-holder50, and the coefficient of thermal expansion of the retaining element 85 is α-retainer. These coefficients satisfy the following conditions: α-retainer < α-holder; 1.01 ≤ α-holder50 / α-holder25 ≤ 3.63; 30 ppm / ℃ < α-holder - α-retainer < 240 ppm / ℃; α-retainer ≤ α-arm; and α-retainer < α-arm ≤ α-barrel < α-holder. Among these, α-barrel, α-holder, α-holder25, α-holder50, and α-retainer can be taken from the values ​​in Tables 1 and 2 above, and α-arm can be equal to α-barrel.

[0299] The coefficient of thermal expansion of the lens barrel 82 at 25℃ is α-barrel25, and the coefficient of thermal expansion of the retaining element 85 at 25℃ is α-retainer25. They satisfy the following condition: α-retainer25 < α-barrel25.

[0300] The coefficient of thermal expansion of the extension 8407 is α-extension, and the coefficient of thermal expansion of the retaining element 85 at 25°C is α-retainer25, which satisfies the following condition: 30ppm / °C ≤ α-extension - α-retainer25 ≤ 240ppm / °C.

[0301] The distance between the side of the first contact surface 841 closest to the second contact surface 851 and the optical axis 811 is D-1tocenter, and the distance between the side of the second contact surface 851 closest to the first contact surface 841 and the optical axis 811 is D-2tocenter, which satisfy the following conditions: D-1tocenter = 5.07 cm; D-2tocenter = 5.6 cm; |D-1tocenter - D-2tocenter| = 0.53 cm; and |D-1tocenter - D-2tocenter| / (D-1tocenter + D-2tocenter) = 0.0497.

[0302] The distance between the arm 83 and the object-side end of the lens tube 82 is D-armtotop, and the distance between the arm 83 and the image-side end of the lens tube 82 is D-armtodown, which satisfy the following conditions: D-armtotop = 0.455 cm; D-armtodown = 5.15 cm; and D-armtotop <D-armtodown。

[0303] The thickness of the lens barrel 82 in the direction parallel to the optical axis 811 is T-barrel, and the thickness of the arm portion 83 in the direction parallel to the optical axis 811 between the first contact surface 841 and the second contact surface 851 is T-arm, which satisfies the following conditions: T-barrel = 6.255 cm; T-arm = 0.65 cm; and T-arm / T-barrel = 0.104.

[0304] The arm portion 83 has a bent surface 83a. The bent surface 83a is closer to the optical axis 811 than the first contact surface 841 and the second contact surface 851. The minimum thickness of the arm portion 83 at the bent surface 83a in the direction parallel to the optical axis 811 is T-bend, and the thickness of the arm portion 83 between the first contact surface 841 and the second contact surface 851 in the direction parallel to the optical axis 811 is T-arm, which satisfy the following conditions: T-bend = 0.3 cm; T-arm = 0.65 cm; and T-bend / T-arm = 0.462. The thickness of the arm portion 83 in the direction parallel to the optical axis 811 gradually increases from the bent surface 83a toward the first contact surface 841. The arm portion 83 further has a platform surface 83c. The platform surface 83c is perpendicular to the optical axis 811 and closer to the optical axis 811 than the bent surface 83a. The thickness of the arm portion 83 at the platform surface 83c along the direction parallel to the optical axis 811 is greater than the thickness of the arm portion 83 at the bending surface 83a along the direction parallel to the optical axis 811.

[0305] The first abutment portion 8406a of the support element 84 further has a first gap surface 842. The first gap surface 842 faces the arm portion 83. The first gap surface 842 is adjacent to the first contact surface 841. The first gap surface 842 is spaced apart from the arm portion 83. The distance between the first gap surface 842 and the arm portion 83 in the direction parallel to the optical axis 811 is G-holder, which satisfies the following condition: G-holder = 0.1 cm. The gap formed between the spaced first gap surface 842 and the arm portion 83 corresponds to the second contact surface 851 in the direction parallel to the optical axis 811.

[0306] The holding element 85 further includes a fixing portion 85a. The fixing portion 85a is fixed to the supporting element 84, such that the holding element 85 is connected to the supporting element 84 through the fixing portion 85a, wherein the fixing portion 85a and the supporting element 84 are, for example, correspondingly concave and convex. The thickness of the arm portion 83 in the direction parallel to the optical axis 811 between the first contact surface 841 and the second contact surface 851 is T-arm, and the distance between the second contact surface 851 and the fixing portion 85a in the direction parallel to the optical axis 811 is L-2tomount, which satisfies the following conditions: T-arm = 0.65 cm; L-2tomount = 3.18 cm; and T-arm / L-2tomount = 0.204.

[0307] The length of the first contact surface 841 on the cross section parallel to the optical axis 811 is L-holder, and the length of the second contact surface 851 on the cross section parallel to the optical axis 811 is L-retainer, which satisfy the following conditions: L-holder = 0.25 cm; L-retainer = 0.2378 cm; and L-retainer / L-holder = 0.951.

[0308] The length of the inner surface 8402b in the direction parallel to the optical axis 811 is L-toruinsidesurface, and the length of the bottom surface 8401a in the direction parallel to the optical axis 811 is L-downsidesurface. They satisfy the following condition: L-toruinsidesurface>L-downsidesurface.

[0309] In this embodiment, the first contact surface 841 and the second contact surface 851 each completely surround the optical axis 811. However, this invention is not limited thereto. Please refer to the ninth embodiment.

[0310] <Ninth Embodiment>

[0311] Please refer to Figures 22 to 23 ,in Figure 22 This is a schematic diagram illustrating the corresponding arrangement of components of the imaging lens according to the ninth embodiment of the present invention, and Figure 23 yes Figure 22 A schematic diagram showing the corresponding setup of another component of the imaging lens.

[0312] This embodiment provides a camera module 9, which is similar to the camera module 8 of the eighth embodiment. Therefore, the description of features that are the same or similar to those of camera module 9 and camera module 8 will be omitted.

[0313] In this embodiment, there are four arms 93. The arms 93 are evenly distributed on the side of the lens barrel 92 away from the optical axis 911 in the direction surrounding the optical axis 911, such that the first contact surface 941... Figure 23 As shown, each element is arranged in an arc around the optical axis 911, such that the second contact surface 951 is as follows: Figure 22 As shown, each of them surrounds the optical axis 911 in an arc-shaped arrangement.

[0314] Please note Figure 22 and Figure 23 Only the portion of the support element (unlabeled) forming the first contact surface 941 and the portion of the retaining element (unlabeled) forming the second contact surface 951 are shown in the figure to highlight the corresponding arrangement between the elements.

[0315] <Tenth Embodiment>

[0316] Please refer to Figure 24 This is a perspective view of an electronic device according to the tenth embodiment of the present invention.

[0317] This embodiment provides an electronic device 100, which is an unmanned aerial vehicle (UAV). The electronic device 100 includes a side camera module 100a and a front camera module 100b. The side camera module 100a and the front camera module 100b each include one of the camera modules 1 to 9 of this invention to provide reliable shooting optical quality and shooting environment tolerance for the electronic device 100.

[0318] <Eleventh Embodiment>

[0319] Please refer to Figure 25 and Figure 26 ,in Figure 25 A perspective view of one side of an electronic device according to the eleventh embodiment of the present invention is shown, and Figure 26 Draw Figure 25 A three-dimensional diagram of the other side of the electronic device.

[0320] In this embodiment, the electronic device 200 is a smartphone. The electronic device 200 includes multiple camera modules, a flash module 201, a focus assist module 202, an image signal processor 203, a display module (user interface) 204, and an image software processor (not shown).

[0321] These camera modules include an ultra-wide-angle camera module 200a, a high-resolution camera module 200b, a telephoto camera module 200c, and a telephoto camera module 200d. Camera module 200b includes one of the camera modules 1 to 9 of this invention, but this invention is not limited thereto. At least one of camera modules 200a, 200c, and 200d may also include one of the camera modules 1 to 9 of this invention.

[0322] The ultra-wide-angle camera module 200a has the ability to capture multiple scenes. Figure 27 A schematic diagram illustrating images captured by the ultra-wide-angle camera module 200a.

[0323] The high-resolution camera module 200b features high resolution and low distortion. The high-resolution camera module 200b can further capture… Figure 27 A portion of the image. Figure 28 A schematic diagram illustrating images captured by a high-resolution camera module 200b.

[0324] The telephoto camera module 200c and telephoto camera module 200d have high magnification capabilities. The telephoto camera module 200c or telephoto camera module 200d can further capture... Figure 28 A portion of the image. Figure 29 A schematic diagram illustrating the image captured by telephoto camera module 200c or telephoto camera module 200d.

[0325] When the user photographs a subject, the electronic device 200 uses an ultra-wide-angle camera module 200a, a high-resolution camera module 200b, a telephoto camera module 200c, or a telephoto camera module 200d to focus the light for image capture. It activates the flash module 201 for supplemental lighting and uses the subject distance information provided by the focus assist module 202 for rapid focusing. The image signal processor 203 then performs image optimization processing to further improve the image quality produced by the camera module, while also providing zoom functionality. The focus assist module 202 can employ an infrared or laser focus assist system to achieve rapid focusing. The display module 204 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 can be performed using a physical shooting button). The image processed by the image software processor is then displayed on the display module 204.

[0326] <Twelfth Embodiment>

[0327] Please refer to Figure 30 The diagram shows a perspective view of one side of an electronic device according to the twelfth embodiment of the present invention.

[0328] In this embodiment, the electronic device 300 is a smartphone. The electronic device 300 includes camera modules 300a, 300b, 300c, 300d, 300e, 300f, 300g, 300h, and 300i, a flash module 301, an image signal processor, a display device, and an image software processor (not shown). Camera modules 300a, 300b, 300c, 300d, 300e, 300f, 300g, 300h, and 300i are all located on the same side of the electronic device 300, while the display device is located on the other side. Camera module 300e includes one of the camera modules 1 to 9 of this invention, but this invention is not limited thereto. At least one of the camera modules 300a, 300b, 300c, 300d, 300f, 300g, 300h, and 300i may include one of the camera modules 1 to 9 of this utility model.

[0329] Camera module 300a is a telephoto camera module, camera module 300b is a telephoto camera module, camera module 300c is a telephoto camera module, camera module 300d is a telephoto camera module, camera module 300e is a wide-angle camera module, camera module 300f is a wide-angle camera module, camera module 300g is an ultra-wide-angle camera module, camera module 300h is a Time of Flight (ToF) camera module, and camera module 300i is an ultra-wide-angle camera module. In this embodiment, camera modules 300i, 300a, 300b, 300c, 300d, 300e, 300f, and 300g have different viewing angles, allowing the electronic device 300 to provide different magnifications to achieve optical zoom shooting effects. Furthermore, camera modules 300a and 300b are telephoto camera modules with light-shifting elements. Additionally, camera module 300h is capable of acquiring depth information of the image. The aforementioned electronic device 300 is exemplified by including multiple camera modules 300a, 300b, 300c, 300d, 300e, 300f, 300g, 300h, and 300i, but the number and configuration of camera modules are not intended to limit this invention. When a user photographs a subject, the electronic device 300 utilizes camera modules 300a, 300b, 300c, 300d, 300e, 300f, 300g, 300h, or 300i to focus light and capture an image, activates the flash module 301 for supplemental lighting, and performs subsequent processing in a manner similar to the aforementioned embodiments, which will not be elaborated upon here.

[0330] <Thirteenth Embodiment>

[0331] Please refer to Figures 31 to 33 ,in Figure 31 A perspective view of an electronic device according to the thirteenth embodiment of this utility model is shown. Figure 32 Draw Figure 31 A side view of the electronic device, and Figure 33 Draw Figure 31 A top-view diagram of the electronic device.

[0332] In this embodiment, the electronic device 400 is a car. The electronic device 400 includes a plurality of automotive camera modules 400a, and these camera modules 400a respectively include one of the camera modules 1 to 9 of this utility model, which can be applied, for example, to a panoramic driving assistance system, a driving recorder, and a reversing camera.

[0333] like Figure 31As shown, the camera module 400a can be installed, for example, around the vehicle body to capture images of the car's surroundings, helping to identify road conditions outside the vehicle and thus enabling automated driving assistance functions. Furthermore, the images can be combined into a panoramic view using image software processors, providing images of the driver's blind spots, allowing the driver to monitor the surroundings of the vehicle for easier driving and parking.

[0334] like Figure 32 As shown, the camera module 400a can be installed, for example, below the left and right rearview mirrors respectively. The viewing angle of the camera module 400a can be 40 degrees to 90 degrees to capture image information within the range of the left and right lanes.

[0335] like Figure 33 As shown, the camera module 400a can also be installed, for example, below 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.

[0336] The camera module of this invention is not limited to applications in unmanned aerial vehicles, smartphones, panoramic driving assistance systems, dashcams, and reversing cameras. It can be applied to various mobile focusing systems as needed, and features excellent aberration correction and good image quality. For example, the camera module can be widely used in 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 camera module.

[0337] Although the present invention has been disclosed above with reference to the foregoing embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be determined by the claims appended to this specification.

Claims

1. An imaging lens, characterized in that, Include: At least one lens having an optical axis; A lens barrel that houses at least one lens; An arm is disposed on the side of the lens barrel away from the optical axis, wherein the arm extends in a direction away from the optical axis; A support element having a first contact surface, wherein the first contact surface overlaps and contacts the arm portion in a direction parallel to the optical axis; and A holding element is fixed to the support element, wherein the holding element has a second contact surface that overlaps with and contacts the arm in a direction parallel to the optical axis, and the second contact surface is located on the opposite side of the first contact surface. The arm is located between the support element and the holding element; The supporting element and the maintaining element are made of different materials; The first contact surface and the second contact surface surround the optical axis, and the first contact surface and the second contact surface do not overlap in a direction parallel to the optical axis. The coefficient of thermal expansion of the support element is α-holder, and the coefficient of thermal expansion of the retaining element is α-retainer, which satisfy the following conditions: α-retainer < α-holder; Wherein, the distance between the side of the first contact surface closest to the second contact surface and the optical axis is D-1tocenter, and the distance between the side of the second contact surface closest to the first contact surface and the optical axis is D-2tocenter, which satisfies the following condition: 0.05 cm ≤ |D-1tocenter-D-2tocenter| ≤ 1.8 cm.

2. The imaging lens according to claim 1, characterized in that, The distance between the side of the first contact surface closest to the second contact surface and the optical axis is D-1tocenter, and the distance between the side of the second contact surface closest to the first contact surface and the optical axis is D-2tocenter, satisfying the following condition: 0.01≤|D-1tocenter-D-2tocenter| / (D-1tocenter+D-2tocenter)≤0.

145.

3. The imaging lens according to claim 1, characterized in that, The coefficient of thermal expansion of the support element is α-holder25 at 25℃ and α-holder50 at 50℃, satisfying the following conditions: 1.01≤α-holder50 / α-holder25≤3.

63.

4. The imaging lens according to claim 1, characterized in that, The coefficient of thermal expansion of the support element is α-holder, and the coefficient of thermal expansion of the retaining element is α-retainer, which satisfy the following conditions: 30ppm / ℃<α-holder-α-retainer<240ppm / ℃.

5. The imaging lens according to claim 1, characterized in that, The coefficient of thermal expansion of the retaining element is α-retainer, and the coefficient of thermal expansion of the arm is α-arm, which satisfy the following conditions: α-retainer≤α-arm.

6. The imaging lens according to claim 1, characterized in that, The coefficient of thermal expansion of the retaining element is α-retainer, the coefficient of thermal expansion of the arm is α-arm, the coefficient of thermal expansion of the lens barrel is α-barrel, and the coefficient of thermal expansion of the support element is α-holder, which satisfies the following conditions: α-retainer<α-arm≤α-barrel<α-holder.

7. The imaging lens according to claim 1, characterized in that, The thickness of the arm portion between the first contact surface and the second contact surface in a direction parallel to the optical axis is T-arm, which satisfies the following condition: 0.15 cm ≤ T-arm ≤ 1.5 cm.

8. The imaging lens according to claim 1, characterized in that, The arm has a bent surface, and the bent surface is closer to the optical axis than the first contact surface and the second contact surface; Wherein, the minimum thickness of the arm portion at the bending surface along the direction parallel to the optical axis is T-bend, and the thickness of the arm portion between the first contact surface and the second contact surface in the direction parallel to the optical axis is T-arm, which satisfies the following conditions: 0.333≤T-bend / T-arm≤0.

885.

9. The imaging lens according to claim 1, characterized in that, The thickness of the arm portion between the first contact surface and the second contact surface in the direction parallel to the optical axis is T-arm, and the thickness of the lens barrel in the direction parallel to the optical axis is T-barrel, satisfying the following conditions: 0.035≤T-arm / T-barrel≤0.

18.

10. The imaging lens according to claim 1, characterized in that, The support element further has a first gap surface, which is adjacent to the first contact surface and is spaced apart from the arm portion; The distance between the first gap surface and the arm in a direction parallel to the optical axis is G-holder, which satisfies the following condition: 0.01 cm ≤ G-holder ≤ 0.4 cm.

11. The imaging lens according to claim 10, characterized in that, It also includes a gap element, wherein the gap element is disposed between the first gap surface and the arm portion, and the gap element contacts the first gap surface and the arm portion.

12. The imaging lens according to claim 1, characterized in that, The retaining element further has a second gap surface, which is adjacent to the second contact surface and is spaced apart from the arm portion; The distance between the second gap surface and the arm in a direction parallel to the optical axis is G-retainer, which satisfies the following condition: 0.01 cm ≤ G-retainer ≤ 0.4 cm.

13. The imaging lens according to claim 1, characterized in that, The retaining element further includes a fixing portion, which is fixed to the supporting element; The thickness of the arm portion between the first contact surface and the second contact surface in a direction parallel to the optical axis is T-arm, and the distance between the second contact surface and the fixing portion in a direction parallel to the optical axis is L-2tomount, satisfying the following conditions: 0.042≤T-arm / L-2tomount≤0.

775.

14. The imaging lens according to claim 1, characterized in that, The support element has an inner surface facing the optical axis, and an air gap is formed between the inner surface and the lens barrel. The air gap overlaps the at least one lens in a direction perpendicular to the optical axis.

15. The imaging lens according to claim 1, characterized in that, The arm is integrally formed with the lens barrel.

16. The imaging lens according to claim 1, characterized in that, The distance between the arm and the object-side end of the lens barrel is less than the distance between the arm and the image-side end of the lens barrel.

17. The imaging lens according to claim 1, characterized in that, It also includes a connecting element formed on the arm, the connecting element surrounding the optical axis and forming a light-transmitting hole, and the light-transmitting hole being located at the aperture position of the imaging lens.

18. The imaging lens according to claim 1, characterized in that, The length of the second contact surface in a section parallel to the optical axis is L-retainer, and the length of the first contact surface in a section parallel to the optical axis is L-holder, which satisfies the following condition: 0.2 <L-retainer / L-holder<5。 19. The imaging lens according to claim 1, characterized in that, The at least one lens comprises a plastic lens and a glass lens.

20. A camera module, characterized in that, Include: The imaging lens according to claim 1; and A photosensitive element group, including an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the image side of the imaging lens; The supporting element of the imaging lens is fixed to the photosensitive element group.

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

22. A camera module, characterized in that, Include: A lens group having multiple lenses, wherein the lenses are arranged along an optical axis; A lens barrel that carries the lens group; One arm extends from the lens tube in a direction away from the optical axis; An electronic photosensitive element is disposed on the image side of the lens group; A support element for the lens barrel to be positioned so that the lens barrel corresponds to the electronic photosensitive element, wherein the support element has a first contact surface that surrounds the optical axis and contacts the arm portion; and A holding element is fixed to the support element to fix the lens barrel to the support element, wherein the holding element has a second contact surface, and the second contact surface surrounds the optical axis and contacts the arm so that the arm always remains in contact with the first contact surface; The arm is located between the support element and the holding element; One of the arm, the support element, and the holding element is made of a material different from the other two. Wherein, the first contact surface and the second contact surface do not overlap in the direction parallel to the optical axis; Wherein, the distance between the side of the first contact surface closest to the second contact surface and the optical axis is D-1tocenter, and the distance between the side of the second contact surface closest to the first contact surface and the optical axis is D-2tocenter, which satisfies the following condition: 0.05 cm ≤ |D-1tocenter-D-2tocenter| ≤ 1.8 cm.

23. The camera module according to claim 22, characterized in that, The distance between the side of the first contact surface closest to the second contact surface and the optical axis is D-1tocenter, and the distance between the side of the second contact surface closest to the first contact surface and the optical axis is D-2tocenter, satisfying the following condition: 0.01≤|D-1tocenter-D-2tocenter| / (D-1tocenter+D-2tocenter)≤0.

145.

24. The camera module according to claim 22, characterized in that, The support element has an extension for moving the first contact surface of the support element in a direction parallel to the optical axis. The coefficient of thermal expansion of the extension is α-extension, and the coefficient of thermal expansion of the retaining element at 25°C is α-retainer25, which satisfies the following conditions: 30ppm / ℃≤α-extension-α-retainer25≤240ppm / ℃.

25. The camera module according to claim 22, characterized in that, The support element has an extension for moving the first contact surface of the support element in a direction parallel to the optical axis, and the extension has a coefficient of thermal expansion that varies with temperature. The coefficient of thermal expansion of the support element at 25℃ is α-holder25, and the coefficient of thermal expansion of the support element at 50℃ is α-holder50, satisfying the following conditions: 1.01≤α-holder50 / α-holder25≤3.

63.

26. The camera module according to claim 22, characterized in that, The coefficient of thermal expansion of the lens barrel at 25°C is α-barrel25, and the coefficient of thermal expansion of the retaining element at 25°C is α-retainer25, which satisfy the following conditions: α-retainer25 < α-barrel25.

27. The camera module according to claim 22, characterized in that, The thickness of the arm portion between the first contact surface and the second contact surface in a direction parallel to the optical axis is T-arm, which satisfies the following condition: 0.15 cm ≤ T-arm ≤ 1.5 cm.

28. The camera module according to claim 22, characterized in that, The arm has a bent surface, and the bent surface is closer to the optical axis than the first contact surface and the second contact surface; Wherein, the minimum thickness of the arm portion at the bending surface along the direction parallel to the optical axis is T-bend, and the thickness of the arm portion between the first contact surface and the second contact surface in the direction parallel to the optical axis is T-arm, which satisfies the following conditions: 0.333≤T-bend / T-arm≤0.

885.

29. The camera module according to claim 28, characterized in that, The arm portion further has a platform surface that is perpendicular to the optical axis and closer to the optical axis than the bending surface, and the thickness of the arm portion on the platform surface in a direction parallel to the optical axis is greater than the thickness of the arm portion on the bending surface in a direction parallel to the optical axis.

30. The camera module according to claim 22, characterized in that, The arm has a bent surface that is closer to the optical axis than the first contact surface and the second contact surface, and the thickness of the arm gradually increases from the bent surface toward the first contact surface in a direction parallel to the optical axis. The minimum thickness of the arm portion at the bending surface along a direction parallel to the optical axis is T-bend, which satisfies the following condition: 0.15 cm ≤ T-bend ≤ 1 cm.

31. The camera module according to claim 22, characterized in that, The support element further has a first gap surface, which is adjacent to the first contact surface and is spaced apart from the arm portion; The distance between the first gap surface and the arm in a direction parallel to the optical axis is G-holder, which satisfies the following condition: 0.01 cm ≤ G-holder ≤ 0.4 cm.

32. The camera module according to claim 31, characterized in that, It also includes a gap element, wherein the gap element is disposed between the first gap surface and the arm portion.

33. The camera module according to claim 22, characterized in that, The retaining element further includes a fixing portion, and the retaining element is connected to the supporting element through the fixing portion; The thickness of the arm portion between the first contact surface and the second contact surface in a direction parallel to the optical axis is T-arm, and the distance between the second contact surface and the fixing portion in a direction parallel to the optical axis is L-2tomount, satisfying the following conditions: 0.042≤T-arm / L-2tomount≤0.

775.

34. The camera module according to claim 22, characterized in that, The support element further includes a reinforcing element, which overlaps with the first contact surface in a direction parallel to the optical axis.

35. The camera module according to claim 22, characterized in that, The support element includes: A base; and A support element carrier is disposed on the base, wherein the support element carrier has a first contact surface and a third contact surface, and the support element carrier contacts the base through the third contact surface; The supporting element has a fixing part, and the supporting element is mounted to the base through the fixing part; The third contact surface is closer to the arm than the fixed part.

36. The camera module according to claim 22, characterized in that, The length of the second contact surface in a section parallel to the optical axis is L-retainer, and the length of the first contact surface in a section parallel to the optical axis is L-holder, which satisfies the following condition: 0.2 <L-retainer / L-holder<5。 37. An electronic device, characterized in that, Include: The camera module according to claim 22.

38. A camera module, characterized in that, Include: A lens group having multiple lenses, wherein the lenses are arranged along an optical axis; A lens barrel that carries the lens group; One arm extends from the lens tube in a direction away from the optical axis; An electronic photosensitive element is disposed on the image side of the lens group; A support element for the lens barrel to be positioned so that the lens barrel corresponds to the electronic photosensitive element, wherein the support element comprises: A base; and A support element carrier is disposed on the base, wherein the support element carrier has a first contact surface, the first contact surface surrounds the optical axis and contacts the arm, and the support element carrier supports the lens barrel through the first contact surface; and A retaining element is fixed to the supporting element to fix the lens barrel to the supporting element, wherein the retaining element has a second contact surface and a fixing part, the second contact surface surrounds the optical axis and contacts the arm, and the retaining element is mounted to the base through the fixing part; The arm is located between the support element and the holding element; One of the arm, the support element, and the holding element is made of a material different from the other two. The first contact surface and the second contact surface do not overlap in a direction parallel to the optical axis.

39. The camera module according to claim 38, characterized in that, The distance between the side of the first contact surface closest to the second contact surface and the optical axis is D-1tocenter, and the distance between the side of the second contact surface closest to the first contact surface and the optical axis is D-2tocenter, satisfying the following condition: 0.01≤|D-1tocenter-D-2tocenter| / (D-1tocenter+D-2tocenter)≤0.

145.

40. The camera module according to claim 38, characterized in that, The support element carrier has an extension; The coefficient of thermal expansion of the extension is α-extension, and the coefficient of thermal expansion of the retaining element at 25°C is α-retainer25, which satisfies the following conditions: 30ppm / ℃≤α-extension-α-retainer25≤240ppm / ℃.

41. The camera module according to claim 38, characterized in that, The coefficient of thermal expansion of the lens barrel at 25°C is α-barrel25, and the coefficient of thermal expansion of the retaining element at 25°C is α-retainer25, which satisfy the following conditions: α-retainer25 < α-barrel25.

42. The camera module according to claim 38, characterized in that, The thickness of the arm portion between the first contact surface and the second contact surface in a direction parallel to the optical axis is T-arm, which satisfies the following condition: 0.15 cm ≤ T-arm ≤ 1.5 cm.

43. The camera module according to claim 38, characterized in that, The arm has a bent surface, and the bent surface is closer to the optical axis than the first contact surface and the second contact surface; Wherein, the minimum thickness of the arm portion at the bending surface along the direction parallel to the optical axis is T-bend, and the thickness of the arm portion between the first contact surface and the second contact surface in the direction parallel to the optical axis is T-arm, which satisfies the following conditions: 0.333≤T-bend / T-arm≤0.

885.

44. The camera module according to claim 43, characterized in that, The arm portion further has a platform surface that is perpendicular to the optical axis and closer to the optical axis than the bending surface, and the thickness of the arm portion on the platform surface in a direction parallel to the optical axis is greater than the thickness of the arm portion on the bending surface in a direction parallel to the optical axis.

45. The camera module according to claim 38, characterized in that, The arm has a bent surface that is closer to the optical axis than the first contact surface and the second contact surface, and the thickness of the arm gradually increases from the bent surface toward the first contact surface in a direction parallel to the optical axis. The minimum thickness of the arm portion at the bending surface along a direction parallel to the optical axis is T-bend, which satisfies the following condition: 0.15 cm ≤ T-bend ≤ 1 cm.

46. ​​The camera module according to claim 38, characterized in that, The support element further has a first gap surface, which is adjacent to the first contact surface and is spaced apart from the arm portion; The distance between the first gap surface and the arm in a direction parallel to the optical axis is G-holder, which satisfies the following condition: 0.01 cm ≤ G-holder ≤ 0.4 cm.

47. The camera module according to claim 46, characterized in that, It also includes a gap element, wherein the gap element is disposed between the first gap surface and the arm portion.

48. The camera module according to claim 38, characterized in that, The thickness of the arm portion between the first contact surface and the second contact surface in a direction parallel to the optical axis is T-arm, and the distance between the second contact surface and the fixing portion in a direction parallel to the optical axis is L-2tomount, satisfying the following conditions: 0.042≤T-arm / L-2tomount≤0.

775.

49. The camera module according to claim 38, characterized in that, The support element carrier further includes a reinforcing element, and the reinforcing element overlaps with the first contact surface in a direction parallel to the optical axis.

50. The camera module according to claim 38, characterized in that, The length of the second contact surface in a section parallel to the optical axis is L-retainer, and the length of the first contact surface in a section parallel to the optical axis is L-holder, which satisfies the following condition: 0.2 <L-retainer / L-holder<5。 51. An electronic device, characterized in that, Include: The camera module according to claim 38.

52. A camera module, characterized in that, Include: Multiple lenses are arranged along a single optical axis; A lens barrel having a barrel wall surrounding the lenses; An arm extends from the tube wall of the lens barrel in a direction away from the optical axis, wherein the arm has a top surface facing the object side and a bottom surface facing the image side; An electronic photosensitive element is disposed on the image side of the lens barrel; A support element for mounting the lens barrel, wherein the support element comprises: A base having a bottom and an annular sidewall, wherein the bottom has a bottom surface facing the arm, the annular sidewall extends from the bottom surface of the bottom toward the arm, and the annular sidewall has an annular top surface facing the arm and an annular inner surface facing the lens barrel; and A support element carrier is connected to the base, wherein the support element carrier has: A reinforcing element includes a first abutment portion, a connecting portion, and a second abutment portion, wherein the first abutment portion abuts against the top surface of the ring, the connecting portion extends from the first abutment portion in a direction away from the arm portion, and the second abutment portion connects to the connecting portion and is further away from the arm portion than the first abutment portion; and An extension having a first end portion connected to the second abutment portion and a second end portion extending from the first end portion toward the arm portion, wherein the second end portion contacts the bottom surface of the arm and forms a first contact surface; and A retaining element is fixed to the supporting element, wherein the retaining element abuts against the top surface of the arm and forms a second contact surface; Wherein, the length of the inner surface of the ring in the direction parallel to the optical axis is L-toruinsidesurface, and the length of the bottom surface in the direction parallel to the optical axis is L-downsidesurface, which satisfies the following condition: L-toruinsidesurface>L-downsidesurface.

53. The camera module according to claim 52, characterized in that, The distance between the side of the first contact surface closest to the second contact surface and the optical axis is D-1tocenter, and the distance between the side of the second contact surface closest to the first contact surface and the optical axis is D-2tocenter, satisfying the following condition: 0.05 cm ≤ |D-1tocenter-D-2tocenter| ≤ 1.8 cm.

54. The camera module according to claim 52, characterized in that, The support element carrier has a third contact surface, through which the support element carrier contacts the base. The first end of the extension contacts the reinforcing element and forms a fourth contact surface, and the fourth contact surface is farther away from the arm than the third contact surface.

55. The camera module according to claim 52, characterized in that, The reinforcing element is located between the extension and the ring sidewall.

56. The camera module according to claim 52, characterized in that, The support element has a first gap surface facing the arm portion, the first gap surface being adjacent to the first contact surface, and the first gap surface being spaced apart from the arm portion.

57. The camera module according to claim 56, characterized in that, It also includes a gap element, wherein the gap element is disposed on the first gap surface.

58. An electronic device, characterized in that, Include: The camera module according to claim 52.

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