Imaging lens assembly, camera module and electronic device

Abstract

An imaging lens assembly includes a first plastic lens and a second plastic lens arranged along an optical axis. The first plastic lens includes, in order from a paraxial region to a periphery, a first optically effective portion, a first reduced portion, and a first peripheral portion. The object side surface and the image side surface of the first reduced portion each have a roughened surface. The first peripheral portion is configured to abut and assemble with an adjacent element. The second plastic lens is disposed on the image side of the first plastic lens. The second plastic lens includes, in order from a paraxial region to a periphery, a second optically effective portion, a second reduced portion, and a second peripheral portion. The object side surface and the image side surface of the second reduced portion each have a roughened surface. The second peripheral portion is configured to abut and assemble with an adjacent element. When certain conditions are met, the imaging lens assembly can simultaneously meet the requirements of miniaturization, good optical performance, and high imaging quality. A camera module having the imaging lens assembly and an electronic device having the camera module are also disclosed.

Description

Technical Field

[0001] This invention relates to an imaging lens assembly, a camera module, and an electronic device, particularly an imaging lens assembly and camera module suitable for electronic devices. Background Technology

[0002] With advancements in semiconductor technology, the performance of electronic image sensors has improved, allowing pixels to reach smaller sizes. Therefore, optical lenses with high image quality have become an indispensable component. Furthermore, with the rapid development of technology, mobile devices equipped with optical lenses are being used in a wider range of applications, leading to more diverse requirements for these lenses.

[0003] In recent years, electronic products have been trending towards thinner and lighter designs. However, traditional optical lenses can no longer simultaneously meet the demands of miniaturization and high image quality. Modern imaging devices often feature autofocus, optical image stabilization, and zoom capabilities. However, to achieve these functions, the structure of the imaging device has become relatively complex, and its size has increased accordingly, thus increasing the overall size of the electronic device. Furthermore, in the manufacturing process of optical lenses, lens elements are prone to manufacturing tolerances, affecting the dimensional accuracy of the effective optical part of the lens element. This, in turn, affects the overall optical performance of the optical system, reducing the optical performance of the final product. Summary of the Invention

[0004] In view of the above-mentioned problems, the present invention discloses an imaging lens group, a camera module and an electronic device, which helps to improve the dimensional accuracy of the effective optical part of the lens, enhance the optical performance of the overall optical system, and make the optical performance of the actual product closer to the design simulation value.

[0005] This invention provides an imaging lens assembly comprising a first plastic lens and a second plastic lens. The optical axis of the imaging lens assembly passes through the first and second plastic lenses. The first plastic lens, from its paraxial position to its peripheral position, sequentially comprises a first optically effective portion, a first reduced portion, and a first peripheral portion. Both the object-side and image-side surfaces of the first reduced portion have at least one roughened surface. The first peripheral portion is used for abutment assembly with adjacent elements. The second plastic lens is disposed on the image side of the first plastic lens, and from its paraxial position to its peripheral position, the second plastic lens sequentially comprises a second optically effective portion, a second reduced portion, and a second peripheral portion. Both the object-side and image-side surfaces of the second reduced portion have at least one roughened surface. The second peripheral portion is used for abutment assembly with adjacent elements. The imaging lens assembly further comprises a glass lens, which is disposed corresponding to one of the first and second plastic lenses. Wherein, the center thickness of the first optical effective part is CT1, the center thickness of the second optical effective part is CT2, the minimum thickness of the first reduction part is ET1m, the edge thickness of the first optical effective part is ET1, the minimum thickness of the second reduction part is ET2m, the edge thickness of the second optical effective part is ET2, the peripheral thickness of the glass lens is PTG, and the center thickness of the glass lens is CTG, which satisfies the following conditions:

[0006] CT1 ≤ 0.33 mm;

[0007] CT2 ≤ 0.33 mm;

[0008] ET1m / ET1≤1.0;

[0009] ET2m / ET2≤1.0; and

[0010] 0.12≤PTG / CTG≤1.05.

[0011] The present invention also provides an imaging lens assembly comprising a first plastic lens and a second plastic lens. The optical axis of the imaging lens assembly passes through the first plastic lens and the second plastic lens. The first plastic lens, from its paraxial position to its peripheral position, sequentially comprises a first optically effective portion, a first reduced portion, and a first peripheral portion. Both the object-side surface and the image-side surface of the first reduced portion have at least one roughened surface. The first peripheral portion is used for abutment assembly with adjacent elements. The second plastic lens is disposed on the image side of the first plastic lens, and the second plastic lens, from its paraxial position to its peripheral position, sequentially comprises a second optically effective portion, a second reduced portion, and a second peripheral portion. Both the object-side surface and the image-side surface of the second reduced portion have at least one roughened surface. The second peripheral portion is used for abutment assembly with adjacent elements. Wherein, the center thickness of the first optical effective part is CT1, the center thickness of the second optical effective part is CT2, the minimum thickness of the first reduction part is ET1m, the edge thickness of the first optical effective part is ET1, the minimum thickness of the second reduction part is ET2m, the edge thickness of the second optical effective part is ET2, the release force of the roughened surface of the first reduction part is Fr1, the release force of the first optical effective part is Fs1, the release force of the roughened surface of the second reduction part is Fr2, and the release force of the second optical effective part is Fs2, which satisfy the following conditions:

[0012] CT1 ≤ 0.33 mm;

[0013] CT2 ≤ 0.33 mm;

[0014] ET1m / ET1≤1.0;

[0015] ET2m / ET2≤1.0;

[0016] 1.5≤Fr1 / Fs1≤25; and

[0017] 1.5≤Fr2 / Fs2≤25.

[0018] The present invention provides a camera module comprising an electronic photosensitive element and the aforementioned imaging lens group. The electronic photosensitive element is disposed on the imaging surface of the imaging lens group.

[0019] The present invention provides an electronic device comprising the aforementioned camera module.

[0020] According to the imaging lens group, camera module, and electronic device disclosed in this invention, the optical performance of the overall optical system is improved by configuring at least two corresponding plastic lenses whose reduced portions have roughened surfaces. Furthermore, by providing roughened surfaces on both the object side and image side of the reduced portions, the dimensional accuracy of the effective optical portion can be improved, making the optical performance of the actual product closer to the design simulation values.

[0021] In one embodiment, by configuring a glass lens, the overall imaging lens group can have more stable optical image quality.

[0022] When CT1 or CT2 meets the above conditions, a roughened surface can be provided in the reduction section to provide manufacturability for thinning of high-precision plastic lenses, thereby achieving miniaturization of the overall lens module.

[0023] When ET1m / ET1 or ET2m / ET2 meet the above conditions, the structural strength of the plastic lens can be improved.

[0024] When the PTG / CTG meets the above conditions, by configuring glass lenses, the overall imaging lens group can have more stable optical image quality.

[0025] When Fr1 / Fs1 or Fr2 / Fs2 meets the above conditions, using roughened surfaces to increase the release force of the plastic lens can provide stability when the plastic lens leaves the mold.

[0026] The foregoing description of the invention and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of the invention, and to provide a further explanation of the claims. Attached Figure Description

[0027] Figure 1 An exploded perspective view of the imaging lens group and lens barrel according to the first embodiment of the present invention is shown.

[0028] Figure 2 Draw Figure 1 An exploded view of the imaging lens group and the other side of the lens barrel.

[0029] Figure 3 A cross-sectional schematic diagram of the imaging lens assembly and lens barrel according to a first embodiment of the present invention is shown.

[0030] Figure 4 Draw Figure 3 An exploded view of the glass lens, the first plastic lens, the second plastic lens, and the third plastic lens.

[0031] Figure 5 Draw Figure 3 An exploded view of the first and second plastic lenses.

[0032] Figure 6 Draw Figure 3 A magnified schematic diagram of the central region EL1.

[0033] Figure 7 A cross-sectional schematic diagram of the imaging lens assembly and lens barrel according to a second embodiment of the present invention is shown.

[0034] Figure 8Draw Figure 7 An exploded view of the fourth plastic lens, the first plastic lens, the third plastic lens, and the second plastic lens.

[0035] Figure 9 A cross-sectional schematic diagram of the imaging lens assembly and lens barrel according to a third embodiment of the present invention is shown.

[0036] Figure 10 Draw Figure 9 An exploded view of the third plastic lens, the first plastic lens, and the second plastic lens.

[0037] Figure 11 A cross-sectional schematic diagram of the imaging lens assembly and lens barrel according to a fourth embodiment of the present invention is shown.

[0038] Figure 12 Draw Figure 11 An exploded view of the first glass lens, the first plastic lens, the second plastic lens, and the second glass lens.

[0039] Figure 13 A perspective view of one side of an electronic device according to a fifth embodiment of the present invention is shown.

[0040] Figure 14 Draw Figure 13 A three-dimensional diagram of the other side of the electronic device.

[0041] Figure 15 A schematic diagram illustrating the image captured by the ultra-wide-angle camera module.

[0042] Figure 16 A schematic diagram illustrating the image captured by a high-resolution camera module.

[0043] Figure 17 A schematic diagram illustrating the image captured by a telephoto camera module.

[0044] Figure 18 A perspective view of one side of an electronic device according to a sixth embodiment of the present invention is shown.

[0045] Figure 19 A perspective schematic diagram of an electronic device according to a seventh embodiment of the present invention is shown.

[0046] Figure 20 Draw Figure 19 A side view of the electronic device.

[0047] Figure 21 Draw Figure 19 A top view of the electronic device.

[0048] [Symbol Explanation]

[0049] 5, 6, 7: Electronic devices

[0050] 50a, 50b, 50c, 60, 60a, 60b, 60c, 60d, 60e, 60f, 60g, 60h, 70: Camera modules

[0051] 51, 61: Flash module

[0052] 52: Focusing Assist Module

[0053] 53: Image Signal Processor

[0054] 54: Display Module

[0055] 1, 1b, 1c, 1d: Imaging lens group

[0056] 9,9b,9c,9d: Lens tube

[0057] E1, E1b, E1c, E1d: First plastic lens

[0058] E11, E11b, E11c, E11d: First optical effective part

[0059] E1F, E1Fb, E1Fc, E1Fd: Object-side optical effective surfaces of the first optical effective part

[0060] E1R, E1Rb, E1Rc, E1Rd: Image-side optical effective surfaces of the first optical effective part

[0061] E12, E12b, E12c, 12d: First reduction section

[0062] R1F, R1Fb, R1Fc, R1Fd: Object-side surfaces of the first reduction section

[0063] R1R, R1Rb, R1Rc, R1Rd: Image-side surfaces of the first reduction section

[0064] E13, E13b, E13c, E13d: First outer perimeter

[0065] P1Fb, P1Fc: Object-side surfaces of the first outer periphery

[0066] P1R, P1Rb, P1Rc, P1Rd: Image-side surface of the first outer periphery

[0067] E2, E2b, E2c, E2d: Second plastic lens

[0068] E21, E21b, E21c, E21d: Second optical effective part

[0069] E2F, E2Fb, E2Fc, E2Fd: Object-side optical effective surfaces of the second optical effective part

[0070] E2R, E2Rb, E2Rc, E2Rd: Image-side optical effective surface of the second optical effective part

[0071] E22, E22b, E22c, E22d: Second Reduction Section

[0072] R2F, R2Fb, R2Fc, R2Fd: Object-side surfaces of the second reduction section

[0073] R2R, R2Rb, R2Rc, R2Rd: Image-side surfaces of the second reduction section

[0074] E23, E23b, E23c, E23d: Second outer periphery

[0075] P2F, P2Fb, P2Fc, P2Fd: Object-side surfaces of the second outer periphery

[0076] P2R: Image-side surface of the second outer periphery

[0077] E3, E3b, E3c: Third plastic lens

[0078] P3F, P3Fb: Object-side surfaces at the periphery of the third plastic lens

[0079] P3Rb, P3Rc: Image-side surfaces at the periphery of the third plastic lens

[0080] E4b: Fourth Plastic Lens

[0081] P4Rb: Image-side surface at the periphery of the fourth plastic lens

[0082] GL: Glass lens

[0083] GLE: Optical effective part of a glass lens

[0084] GLF: Object-side optical effective surface of the optically effective part of a glass lens.

[0085] GLR: Image-side optical effective surface of the optically effective part of a glass lens

[0086] GL1d: First glass lens

[0087] GL2d: Second glass lens

[0088] AS1, AS1b, AS1c, AS1d: First concentric structures

[0089] AS2, AS2b, AS2c, AS2d: Second concentric structures

[0090] AS3, AS3b, AS3c: Third pair of central structures

[0091] AS4b: Fourth pair of concentric structures

[0092] RS: Roughened surface

[0093] OA: Optical Axis

[0094] CT1: Center thickness of the first optical effective part

[0095] CT2: Center thickness of the second optical effective part

[0096] ET1: Edge thickness of the first optical effective part

[0097] ET2: Edge thickness of the second optical effective part

[0098] ET1m: Minimum thickness of the first reduction section

[0099] ET2m: Minimum thickness of the second reduction section

[0100] PTG: Peripheral thickness of a glass lens

[0101] CTG: Center Thickness of Glass Lens Detailed Implementation

[0102] The following detailed description of the features and advantages of the present invention in the embodiments is sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly. Based on the disclosure of this specification, the claims, and the accompanying drawings, any person skilled in the art can easily understand the related objects and advantages of the present invention. The following embodiments further illustrate the points of the present invention in detail, but are not intended to limit the scope of the present invention in any way.

[0103] This invention provides an imaging lens assembly comprising a first plastic lens and a second plastic lens. The optical axis of the imaging lens assembly passes through the first and second plastic lenses, and the second plastic lens is disposed on the image side of the first plastic lens. The first plastic lens sequentially comprises a first optically effective portion, a first reduced portion, and a first peripheral portion from its paraxial portion to its periphery. The object-side and image-side surfaces of the first reduced portion both have at least one roughened surface, and the first peripheral portion is used for abutment assembly with adjacent elements. The second plastic lens sequentially comprises a second optically effective portion, a second reduced portion, and a second peripheral portion from its paraxial portion to its periphery. The object-side and image-side surfaces of the second reduced portion both have at least one roughened surface, and the second peripheral portion is used for abutment assembly with adjacent elements. The optically effective portion of the plastic lens is the portion through which imaging light rays pass, and the optically effective portion may include an object-side optically effective surface facing the object side and an image-side optically effective surface facing the image side. The outer periphery is where the plastic lens and adjacent components are assembled, and the reduced portion connects the optically active part to the outer periphery. The roughened surface may appear as a white, hazy substance, clearly distinguishable from a transparent, smooth surface.

[0104] The center thickness of the first optically effective portion is CT1, which satisfies the following condition: CT1 ≤ 0.33 mm. This utilizes the roughened surface of the reduction section to provide manufacturability for high-precision thinning of the plastic lens, thereby achieving miniaturization of the overall lens module. Alternatively, it may also satisfy the following condition: CT1 ≤ 0.3 mm. The center thickness of the optically effective portion is the distance along the optical axis from the object-side optically effective surface to the image-side optically effective surface. Please refer to... Figure 4 The diagram illustrates a parameter CT1 according to the first embodiment of the present invention, wherein the center thickness CT1 of the first optical effective part E11 is the distance on the optical axis OA from the object-side optical effective surface E1F to the image-side optical effective surface E1R of the first optical effective part E11.

[0105] The center thickness of the second optical effective section is CT2, which satisfies the following condition: CT2 ≤ 0.33 mm. This allows for the provision of a roughened surface in the reduction section, providing manufacturability for high-precision thin plastic lenses, thereby achieving miniaturization of the overall lens module. Alternatively, the following condition can also be satisfied: CT2 ≤ 0.3 mm. Please refer to... Figure 4 The diagram illustrates a parameter CT2 according to the first embodiment of the present invention, wherein the center thickness CT2 of the second optical effective part E21 is the distance on the optical axis OA from the object-side optical effective surface E2F to the image-side optical effective surface E2R of the second optical effective part E21.

[0106] The minimum thickness of the first reduction section is ET1m, and the edge thickness of the first optically effective section is ET1, which satisfies the following condition: ET1m / ET1≤1.0. This improves the structural strength of the first plastic lens. The edge thickness of the optically effective section is the distance from the outermost periphery of the object-side optically effective surface to the outermost periphery of the image-side optically effective surface. Please refer to... Figure 4 The diagram illustrates parameters ET1m and ET1 according to the first embodiment of the present invention, wherein the edge thickness ET1 of the first optical effective part E11 is the distance from the outermost periphery of the object-side optical effective surface E1F of the first optical effective part E11 to the outermost periphery of the image-side optical effective surface E1R.

[0107] The minimum thickness of the second reduction section is ET2m, and the edge thickness of the second optical effective section is ET2, which satisfies the following condition: ET2m / ET2≤1.0. This improves the structural strength of the second plastic lens. Please refer to... Figure 4 The diagram illustrates parameters ET2m and ET2 according to the first embodiment of the present invention, wherein the edge thickness ET2 of the second optical effective part E21 is the distance from the outermost periphery of the object-side optical effective surface E2F of the second optical effective part E21 to the outermost periphery of the image-side optical effective surface E2R.

[0108] The imaging lens assembly disclosed in this invention improves the overall optical performance of the optical system by configuring at least two corresponding plastic lenses whose reduced portions have roughened surfaces. Furthermore, by providing roughened surfaces on both the object and image sides of the reduced portions, the dimensional accuracy of the effective optical portion can be improved, making the optical performance of the actual product closer to the design simulation values.

[0109] The imaging lens assembly may further include a glass lens, which is correspondingly disposed with one of the first plastic lens and the second plastic lens. By configuring the glass lens, the overall imaging lens assembly can achieve more stable optical image quality. The glass lens can be a molded glass lens. The peripheral thickness of the glass lens is PTG, and the central thickness is CTG, which can satisfy the following condition: 0.12 ≤ PTG / CTG ≤ 1.05. The glass lens has an effective optical portion through which imaging light passes, and the effective optical portion may include an object-side optically effective surface facing the object side and an image-side optically effective surface facing the image side. The central thickness of the glass lens is the distance along the optical axis from the object-side optically effective surface to the image-side optically effective surface. The peripheral thickness of the glass lens is the thickness of the area of ​​the glass lens used for support in the direction parallel to the optical axis. Please refer to... Figure 4The diagram illustrates parameters PTG and CTG according to the first embodiment of the present invention, wherein the center thickness CTG of the glass lens GL is the distance from the object-side optical effective surface GLF to the image-side optical effective surface GLR of the glass lens GL on the optical axis OA, and the peripheral thickness PTG of the glass lens GL is the thickness of the area where the glass lens GL and the first plastic lens E1 abut in the direction parallel to the optical axis OA.

[0110] The release force of the roughened surface of the first reduction section is Fr1, and the release force of the first optically effective section is Fs1, which satisfies the following condition: 1.5 ≤ Fr1 / Fs1 ≤ 25. Therefore, by using the roughened surface to increase the release force of the plastic lens, the stability of the plastic lens when it leaves the mold can be provided. Furthermore, the stability of the plastic lens molding can be further improved by adjusting the release forces of the roughened surface and the optically effective section, resulting in more stable optical image quality of the overall imaging lens group. The release force Fr1 of the roughened surface of the first reduction section can refer to the release force Fr1_o of the roughened surface of the object-side surface of the first reduction section and / or the release force Fr1_i of the roughened surface of the image-side surface of the first reduction section. The release force Fr1_i of the roughened surface of the image-side surface of the first reduction section and the release force Fs1 of the first optically effective section satisfy the following condition: 5 ≤ Fr1_i / Fs1 ≤ 25. In this way, the roughened surface on the image side of the reduction section provides a larger release force, which can reduce stress accumulation during lens demolding.

[0111] The release force of the roughened surface of the second reduction section is Fr2, and the release force of the second optical effective section is Fs2, which satisfies the following condition: 1.5 ≤ Fr2 / Fs2 ≤ 25. Therefore, by using the roughened surface to increase the release force of the plastic lens, the stability of the plastic lens when it leaves the mold can be provided. Furthermore, the stability of the plastic lens molding can be further improved by adjusting the release forces of the roughened surface and the optical effective section, resulting in more stable optical image quality of the overall imaging lens group. The release force Fr2 of the roughened surface of the second reduction section can refer to the release force Fr2_o of the roughened surface of the object-side surface of the second reduction section and / or the release force Fr2_i of the roughened surface of the image-side surface of the second reduction section. The release force Fr2_i of the roughened surface of the image-side surface of the second reduction section and the release force Fs2 of the second optical effective section satisfy the following condition: 5 ≤ Fr2_i / Fs2 ≤ 25. In this way, the roughened surface on the image side of the reduction section provides a larger release force, which can reduce stress accumulation during lens demolding.

[0112] In one embodiment, an additional light-absorbing layer or an anti-reflective layer may be provided on the roughened surface, but the present invention is not limited thereto.

[0113] The first outer periphery may have a first alignment structure, and the second outer periphery may have a second alignment structure, with the first and second alignment structures corresponding to each other so that the centers of the first and second plastic lenses are aligned. This improves the assembly efficiency of the overall imaging lens group and maintains high image quality.

[0114] The imaging lens assembly may further include a third plastic lens, wherein the third plastic lens has a third alignment structure, and the third alignment structure is correspondingly arranged with one of the first alignment structure and the second alignment structure, so that the first plastic lens, the second plastic lens, and the third plastic lens are all centered. This facilitates the alignment of multiple lenses during assembly and provides assembly stability.

[0115] According to the imaging lens assembly disclosed in this invention, a glass lens can be disposed on the object side of the first plastic lens. This reduces the negative impact of differences in ambient temperature and humidity on the image quality of the imaging lens assembly.

[0116] According to the imaging lens assembly disclosed in this invention, a glass lens can be disposed on the image side of the second plastic lens. This reduces optical aberrations in the overall imaging lens assembly.

[0117] The roughened surfaces of the object-side surface and the image-side surface of the first reduction section are respectively provided in a direction parallel to the optical axis. This reduces the probability of non-imaging rays being generated between the lenses of the imaging lens group.

[0118] The total number of lenses in the imaging lens group is N, which can satisfy the following condition: N≥5. Therefore, an imaging lens group with high optical resolution can be provided for multi-lens optical imaging systems.

[0119] This invention provides a camera module comprising the aforementioned imaging lens group and an electronic photosensitive element. The electronic photosensitive element is disposed on the imaging surface of the imaging lens group. Depending on the corresponding electronic photosensitive element, the imaging surface can be a plane or a curved surface with any curvature, particularly a curved surface with a concave surface facing the object side.

[0120] The present invention provides an electronic device comprising the aforementioned camera module.

[0121] The various technical features in the imaging lens group of the present invention can be combined and configured to achieve the corresponding effects.

[0122] In the imaging lens assembly disclosed in this invention, the glass lens increases the degree of freedom in configuring the refractive power of the imaging lens assembly and reduces the influence of external environmental temperature changes on imaging. Furthermore, the glass lens can be manufactured using techniques such as grinding or molding. Plastic lenses can effectively reduce production costs. In addition, spherical or aspherical surfaces can be provided on the lens surface. Spherical lenses reduce manufacturing difficulty, while aspherical surfaces provide more controllable variables to reduce aberrations, decrease the number of lenses, and effectively reduce the overall length of the imaging lens assembly of this invention. Further, aspherical surfaces can be manufactured using methods such as plastic injection molding or molding glass lenses. If the lens surface is aspherical, it means that all or part of the optically effective area of ​​the lens surface is aspherical.

[0123] In the imaging lens assembly disclosed in this invention, additives can be selectively added to any (or more) lens materials to produce light absorption or interference effects, thereby altering the lens's transmittance for specific wavelengths of light and reducing stray light and color shift. For example, the additives may filter out light in the 600 nm to 800 nm wavelength range to help reduce excess red or infrared light; or they may filter out light in the 350 nm to 450 nm wavelength range to reduce excess blue or ultraviolet light. Therefore, the additives can prevent specific wavelengths of light from interfering with imaging. Furthermore, the additives can be uniformly mixed into plastic and manufactured into lenses using injection molding technology. Additionally, the additives can also be deposited on the lens surface as a coating to provide the aforementioned effects.

[0124] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0125] <First Embodiment>

[0126] Please refer to Figures 1 to 6 ,in Figure 1 An exploded perspective view of the imaging lens group and lens barrel according to the first embodiment of the present invention is shown. Figure 2 Draw Figure 1 An exploded view of the imaging lens group and the other side of the lens barrel. Figure 3 A cross-sectional schematic diagram of the imaging lens assembly and lens barrel according to a first embodiment of the present invention is shown. Figure 4 Draw Figure 3 An exploded view of the glass lens, the first plastic lens, the second plastic lens, and the third plastic lens. Figure 5 Draw Figure 3 An exploded view of the first and second plastic lenses, and Figure 6 Draw Figure 3 A magnified schematic diagram of the central region EL1.

[0127] An imaging lens group 1 is disposed within the lens barrel 9, and the imaging lens group 1 includes multiple optical elements, including multiple lenses and other elements such as, but not limited to, apertures, diaphragms, light shields, spacers, and fixing rings (unlabeled). The optical axis OA of the imaging lens group 1 passes through the lenses, and the multiple lenses include a glass lens GL, a first plastic lens E1, a second plastic lens E2, and a third plastic lens E3 arranged along the optical axis OA.

[0128] The first plastic lens E1 sequentially comprises a first optically effective portion E11, a first reduction portion E12, and a first peripheral portion E13 from its paraxial portion to its periphery. The first optically effective portion E11 is the portion through which imaging light passes, and includes an object-side optically effective surface E1F facing the object side and an image-side optically effective surface E1R facing the image side. The first reduction portion E12 connects the first optically effective portion E11 and the first peripheral portion E13, and both the object-side surface R1F and the image-side surface R1R of the first reduction portion E12 have a roughened surface RS. The first peripheral portion E13 is used for abutment assembly with adjacent elements, and the image-side surface P1R of the first peripheral portion E13 has a first concentric structure AS1. In this embodiment, the first peripheral portion E13 is used for abutment assembly with the periphery of the glass lens GL, the second peripheral portion E23 of the second plastic lens E2, and the inner surface of the lens barrel 9.

[0129] A second plastic lens E2 is disposed on the image side of the first plastic lens E1, and the second plastic lens E2 sequentially includes a second optically effective portion E21, a second reduction portion E22, and a second peripheral portion E23 from its paraxial portion to its peripheral portion. The second optically effective portion E21 is the portion through which imaging light passes, and the second optically effective portion E21 includes an object-side optically effective surface E2F facing the object side and an image-side optically effective surface E2R facing the image side. The second reduction portion E22 connects the second optically effective portion E21 and the second peripheral portion E23, and both the object-side surface R2F and the image-side surface R2R of the second reduction portion E22 have a roughened surface RS. The second peripheral portion E23 is used for abutment assembly with adjacent elements, and both the object-side surface P2F and the image-side surface P2R of the second peripheral portion E23 have a second concentric structure AS2. In this embodiment, the second outer peripheral portion E23 is used to abut and assemble with the first outer peripheral portion E13 of the first plastic lens E1, the periphery of the third plastic lens E3, and the inner surface of the lens barrel 9.

[0130] The third plastic lens E3 is disposed corresponding to the second plastic lens E2, and the third plastic lens E3 is disposed on the image side of the second plastic lens E2. The object-side surface P3F of the third plastic lens E3 at its periphery has a third concentric structure AS3.

[0131] A glass lens GL is disposed corresponding to a first plastic lens E1, and the glass lens GL is disposed on the object side of the first plastic lens E1. The glass lens GL has an optically effective portion GLE through which imaging light passes, and the optically effective portion GLE includes an object-side optically effective surface GLF facing the object side direction and an image-side optically effective surface GLR facing the image side direction.

[0132] In this embodiment, the first aligning structure AS1 on the image-side surface P1R of the first outer peripheral portion E13 corresponds to the second aligning structure AS2 on the object-side surface P2F of the second outer peripheral portion E23, so that the centers of the first plastic lens E1 and the second plastic lens E2 are aligned. Furthermore, the third aligning structure AS3 on the third plastic lens E3 corresponds to the second aligning structure AS2 on the image-side surface P2R of the second outer peripheral portion E23, so that the centers of the first plastic lens E1, the second plastic lens E2, and the third plastic lens E3 are all aligned.

[0133] The roughened surface RS of the object-side surface R1F of the first reduction section E12 and the roughened surface RS of the image-side surface R1R of the first reduction section E12 are respectively arranged in a direction parallel to the optical axis OA.

[0134] In this embodiment, the roughened surface RS on the first reduction portion E12 and the second reduction portion E22 may appear as a white, hazy layer. Furthermore, a light-absorbing layer or an anti-reflective layer may be additionally provided on the roughened surface RS, but the present invention is not limited thereto.

[0135] The center thickness of the first optical effective part E11 is CT1, which satisfies the following condition: CT1 = 0.25 mm.

[0136] The center thickness of the second optical effective part E21 is CT2, which satisfies the following condition: CT2 = 0.28 mm.

[0137] The minimum thickness of the first reduction section E12 is ET1m, and the edge thickness of the first optical effective section E11 is ET1, which satisfies the following conditions: ET1m = 0.289 mm; ET1 = 0.316 mm; and ET1m / ET1 = 0.915.

[0138] The minimum thickness of the second reduction section E22 is ET2m, and the edge thickness of the second optical effective section E21 is ET2, which satisfy the following conditions: ET2m = 0.411 mm; ET2 = 0.467 mm; and ET2m / ET2 = 0.880.

[0139] The peripheral thickness of the glass lens GL is PTG, and the center thickness of the glass lens GL is CTG, which satisfy the following conditions: PTG = 0.4 mm; CTG = 1.078 mm; and PTG / CTG = 0.371.

[0140] The release force of the roughened surface RS of the first reduction section E12 is Fr1, the release force of the roughened surface RS of the object-side surface R1F of the first reduction section E12 is Fr1_o, the release force of the roughened surface RS of the image-side surface R1R of the first reduction section E12 is Fr1_i, and the release force of the first optical effective section E11 is Fs1, which satisfies the following conditions: Fr1_o / Fs1=6.5; and Fr1_i / Fs1=9.3.

[0141] The release force of the roughened surface RS of the second reduction section E22 is Fr2, the release force of the roughened surface RS of the object-side surface R2F of the second reduction section E22 is Fr2_o, the release force of the roughened surface RS of the image-side surface R2R of the second reduction section E22 is Fr2_i, and the release force of the second optical effective section E21 is Fs2, which satisfy the following conditions: Fr2_o / Fs2=6.6; and Fr2_i / Fs2=16.0.

[0142] The total number of lenses in imaging lens group 1 is N, which satisfies the following condition: N = 7.

[0143] <Second Embodiment>

[0144] Please refer to Figure 7 and Figure 8 ,in Figure 7 A cross-sectional schematic diagram of the imaging lens assembly and lens barrel according to a second embodiment of the present invention is shown, and Figure 8 Draw Figure 7 An exploded view of the fourth plastic lens, the first plastic lens, the third plastic lens, and the second plastic lens.

[0145] An imaging lens group 1b is disposed within the lens barrel 9b, and the imaging lens group 1b includes multiple optical elements, including multiple lenses and other elements such as, but not limited to, apertures, diaphragms, light shields, spacers, and fixing rings (unlabeled). The optical axis OA of the imaging lens group 1b passes through the lenses, and the multiple lenses include a fourth plastic lens E4b, a first plastic lens E1b, a third plastic lens E3b, and a second plastic lens E2b arranged along the optical axis OA.

[0146] The first plastic lens E1b sequentially comprises a first optically effective portion E11b, a first reduction portion E12b, and a first peripheral portion E13b from its paraxial portion to its periphery. The first optically effective portion E11b is the portion through which imaging light passes, and includes an object-side optically effective surface E1Fb facing the object side and an image-side optically effective surface E1Rb facing the image side. The first reduction portion E12b connects the first optically effective portion E11b and the first peripheral portion E13b, and both the object-side surface R1Fb and the image-side surface R1Rb of the first reduction portion E12b have a roughened surface RS. The first peripheral portion E13b is used for abutment assembly with adjacent elements, and both the object-side surface P1Fb and the image-side surface P1Rb of the first peripheral portion E13b have a first concentric structure AS1b. In this embodiment, the first outer peripheral portion E13b is used to abut and assemble with the periphery of the fourth plastic lens E4b, the periphery of the third plastic lens E3b, and the inner surface of the lens barrel 9b.

[0147] A second plastic lens E2b is disposed on the image side of the first plastic lens E1b, and the second plastic lens E2b sequentially includes a second optically effective portion E21b, a second reduction portion E22b, and a second peripheral portion E23b from its paraxial portion to its peripheral portion. The second optically effective portion E21b is the portion through which imaging light passes, and the second optically effective portion E21b includes an object-side optically effective surface E2Fb facing the object side and an image-side optically effective surface E2Rb facing the image side. The second reduction portion E22b connects the second optically effective portion E21b and the second peripheral portion E23b, and both the object-side surface R2Fb and the image-side surface R2Rb of the second reduction portion E22b have a roughened surface RS. The second peripheral portion E23b is used for abutment assembly with adjacent elements, and the object-side surface P2Fb of the second peripheral portion E23b has a second concentric structure AS2b. In this embodiment, the second outer peripheral portion E23b is used to abut and assemble with the periphery of the third plastic lens E3b and the inner surface of the lens barrel 9b.

[0148] The third plastic lens E3b is disposed correspondingly to the first plastic lens E1b and the second plastic lens E2b, and is positioned between the first plastic lens E1b and the second plastic lens E2b. The object-side surface P3Fb and the image-side surface P3Rb of the third plastic lens E3b at its periphery both have a third centered structure AS3b.

[0149] The fourth plastic lens E4b is disposed corresponding to the first plastic lens E1b, and the fourth plastic lens E4b is disposed on the object side of the first plastic lens E1b. The fourth plastic lens E4b has a fourth centered structure AS4b on its image-side surface P4Rb at its periphery.

[0150] In this embodiment, the third aligning structure AS3b on the third plastic lens E3b is respectively disposed corresponding to the first aligning structure AS1b on the image-side surface P1Rb of the first outer peripheral portion E13b and the second aligning structure AS2b on the object-side surface P2Fb of the second outer peripheral portion E23b, so that the first plastic lens E1b, the second plastic lens E2b, and the third plastic lens E3b are all centered. Furthermore, the fourth aligning structure AS4b on the fourth plastic lens E4b is corresponding to the first aligning structure AS1b on the object-side surface P1Fb of the first outer peripheral portion E13b, so that the first plastic lens E1b, the second plastic lens E2b, the third plastic lens E3b, and the fourth plastic lens E4b are all centered.

[0151] The roughened surface RS of the object-side surface R1Fb of the first reduction section E12b and the roughened surface RS of the image-side surface R1Rb of the first reduction section E12b are respectively arranged in a direction parallel to the optical axis OA.

[0152] In this embodiment, the roughened surface RS on the first reduction portion E12b and the second reduction portion E22b may appear as a white, hazy layer. Furthermore, a light-absorbing layer or an anti-reflective layer may be additionally provided on the roughened surface RS, but the present invention is not limited thereto.

[0153] The center thickness of the first optical effective part E11b is CT1, which satisfies the following condition: CT1 = 0.285 mm.

[0154] The center thickness of the second optical effective part E21b is CT2, which satisfies the following condition: CT2 = 0.295 mm.

[0155] The minimum thickness of the first reduction section E12b is ET1m, and the edge thickness of the first optical effective section E11b is ET1, which satisfies the following conditions: ET1m = 0.309 mm; ET1 = 0.448 mm; and ET1m / ET1 = 0.690.

[0156] The minimum thickness of the second reduction section E22b is ET2m, and the edge thickness of the second optical effective section E21b is ET2, which satisfies the following conditions: ET2m = 0.321 mm; ET2 = 0.415 mm; and ET2m / ET2 = 0.773.

[0157] The release force of the roughened surface RS of the first reduction section E12b is Fr1, the release force of the roughened surface RS of the object-side surface R1Fb of the first reduction section E12b is Fr1_o, the release force of the roughened surface RS of the image-side surface R1Rb of the first reduction section E12b is Fr1_i, and the release force of the first optical effective section E11b is Fs1, which satisfies the following conditions: Fr1_o / Fs1=3.1; and Fr1_i / Fs1=5.2.

[0158] The release force of the roughened surface RS of the second reduction section E22b is Fr2, the release force of the roughened surface RS of the object-side surface R2Fb of the second reduction section E22b is Fr2_o, the release force of the roughened surface RS of the image-side surface R2Rb of the second reduction section E22b is Fr2_i, and the release force of the second optical effective section E21b is Fs2, which satisfies the following conditions: Fr2_o / Fs2=6.6; and Fr2_i / Fs2=7.7.

[0159] The total number of lenses in imaging lens group 1b is N, which satisfies the following condition: N = 8.

[0160] <Third Embodiment>

[0161] Please refer to Figure 9 and Figure 10 ,in Figure 9 A cross-sectional schematic diagram of the imaging lens assembly and lens barrel according to a third embodiment of the present invention is shown, and Figure 10 Draw Figure 9 An exploded view of the third plastic lens, the first plastic lens, and the second plastic lens.

[0162] An imaging lens group 1c is disposed within a lens barrel 9c, and the imaging lens group 1c includes multiple optical elements, including multiple lenses and other elements such as, but not limited to, apertures, stoppers, light shields, spacers, and fixing rings (unlabeled). The optical axis OA of the imaging lens group 1c passes through the lenses, and the multiple lenses include a third plastic lens E3c, a first plastic lens E1c, and a second plastic lens E2c arranged along the optical axis OA.

[0163] The first plastic lens E1c sequentially comprises a first optically effective portion E11c, a first reduction portion E12c, and a first peripheral portion E13c from its paraxial portion to its periphery. The first optically effective portion E11c is the portion through which imaging light passes, and includes an object-side optically effective surface E1Fc facing the object side and an image-side optically effective surface E1Rc facing the image side. The first reduction portion E12c connects the first optically effective portion E11c and the first peripheral portion E13c, and both the object-side surface R1Fc and the image-side surface R1Rc of the first reduction portion E12c have a roughened surface RS. The first peripheral portion E13c is used for abutment assembly with adjacent elements, and both the object-side surface P1Fc and the image-side surface P1Rc of the first peripheral portion E13c have a first concentric structure AS1c. In this embodiment, the first outer peripheral portion E13c is used to abut and assemble with the periphery of the third plastic lens E3c, the second outer peripheral portion E23c of the second plastic lens E2c, and the inner surface of the lens barrel 9c.

[0164] A second plastic lens E2c is disposed on the image side of the first plastic lens E1c, and the second plastic lens E2c sequentially includes a second optically effective portion E21c, a second reduction portion E22c, and a second peripheral portion E23c from its paraxial portion to its peripheral portion. The second optically effective portion E21c is the portion through which imaging light passes, and the second optically effective portion E21c includes an object-side optically effective surface E2Fc facing the object side and an image-side optically effective surface E2Rc facing the image side. The second reduction portion E22c connects the second optically effective portion E21c and the second peripheral portion E23c, and both the object-side surface R2Fc and the image-side surface R2Rc of the second reduction portion E22c have a roughened surface RS. The second peripheral portion E23c is used for abutment assembly with adjacent elements, and the object-side surface P2Fc of the second peripheral portion E23c has a second concentric structure AS2c. In this embodiment, the second outer peripheral portion E23c is used to abut and assemble with the first outer peripheral portion E13c of the first plastic lens E1c and the inner surface of the lens barrel 9c.

[0165] The third plastic lens E3c is disposed corresponding to the first plastic lens E1c, and the third plastic lens E3c is disposed on the object side of the first plastic lens E1c. The third plastic lens E3c has a third centered structure AS3c on its image-side surface P3Rc at its periphery.

[0166] In this embodiment, the first aligning structure AS1c of the image-side surface P1Rc of the first outer peripheral portion E13c corresponds to the second aligning structure AS2c of the object-side surface P2Fc of the second outer peripheral portion E23c, so that the centers of the first plastic lens E1c and the second plastic lens E2c are aligned. Furthermore, the third aligning structure AS3c on the third plastic lens E3c corresponds to the first aligning structure AS1c of the object-side surface P1Fc of the first outer peripheral portion E13c, so that the centers of the first plastic lens E1c, the second plastic lens E2c, and the third plastic lens E3c are all aligned.

[0167] The roughened surface RS of the object-side surface R1Fc of the first reduction section E12c and the roughened surface RS of the image-side surface R1Rc of the first reduction section E12c are respectively arranged in a direction parallel to the optical axis OA.

[0168] In this embodiment, the roughened surface RS on the first reduction portion E12c and the second reduction portion E22c may appear as a white, hazy layer. Furthermore, a light-absorbing layer or an anti-reflective layer may be additionally provided on the roughened surface RS, but the present invention is not limited thereto.

[0169] The center thickness of the first optical effective part E11c is CT1, which satisfies the following condition: CT1 = 0.278 mm.

[0170] The center thickness of the second optical effective part E21c is CT2, which satisfies the following condition: CT2 = 0.24 mm.

[0171] The minimum thickness of the first reduction section E12c is ET1m, and the edge thickness of the first optical effective section E11c is ET1, which satisfies the following conditions: ET1m = 0.286 mm; ET1 = 0.39 mm; and ET1m / ET1 = 0.733.

[0172] The minimum thickness of the second reduction section E22c is ET2m, and the edge thickness of the second optical effective section E21c is ET2, which satisfies the following conditions: ET2m = 0.243 mm; ET2 = 0.272 mm; and ET2m / ET2 = 0.893.

[0173] The release force of the roughened surface RS of the first reduction section E12c is Fr1, the release force of the roughened surface RS of the object-side surface R1Fc of the first reduction section E12c is Fr1_o, the release force of the roughened surface RS of the image-side surface R1Rc of the first reduction section E12c is Fr1_i, and the release force of the first optical effective section E11c is Fs1, which satisfies the following conditions: Fr1_o / Fs1=4.7; and Fr1_i / Fs1=19.4.

[0174] The release force of the roughened surface RS of the second reduction section E22c is Fr2, the release force of the roughened surface RS of the object-side surface R2Fc of the second reduction section E22c is Fr2_o, the release force of the roughened surface RS of the image-side surface R2Rc of the second reduction section E22c is Fr2_i, and the release force of the second optical effective section E21c is Fs2, which satisfies the following conditions: Fr2_o / Fs2=7.2; and Fr2_i / Fs2=9.3.

[0175] The total number of lenses in the imaging lens group 1c is N, which satisfies the following condition: N = 7.

[0176] <Fourth Embodiment>

[0177] Please refer to Figure 11 and Figure 12 ,in Figure 11 A cross-sectional schematic diagram of the imaging lens assembly and lens barrel according to a fourth embodiment of the present invention is shown, and Figure 12 Draw Figure 11 An exploded view of the first glass lens, the first plastic lens, the second plastic lens, and the second glass lens.

[0178] An imaging lens group 1d is disposed within a lens barrel 9d, and the imaging lens group 1d includes multiple optical elements, including multiple lenses and other elements such as, but not limited to, apertures, diaphragms, light shields, spacers, and retaining rings (unlabeled). The optical axis OA of the imaging lens group 1d passes through the lenses, and the multiple lenses include a first glass lens GL1d, a first plastic lens E1d, a second plastic lens E2d, and a second glass lens GL2d arranged along the optical axis OA.

[0179] The first plastic lens E1d, from its paraxial portion to its periphery, sequentially comprises a first optically effective portion E11d, a first reduction portion E12d, and a first peripheral portion E13d. The first optically effective portion E11d is the portion through which imaging light passes, and includes an object-side optically effective surface E1Fd facing the object side and an image-side optically effective surface E1Rd facing the image side. The first reduction portion E12d connects the first optically effective portion E11d and the first peripheral portion E13d, and both the object-side surface R1Fd and the image-side surface R1Rd of the first reduction portion E12d have a roughened surface RS. The first peripheral portion E13d is used for abutment assembly with adjacent elements, and the image-side surface P1Rd of the first peripheral portion E13d has a first concentric structure AS1d. In this embodiment, the first outer peripheral portion E13d is used to abut and assemble with the second outer peripheral portion E23d of the second plastic lens E2d and the inner surface of the lens barrel 9d.

[0180] A second plastic lens E2d is disposed on the image side of the first plastic lens E1d, and the second plastic lens E2d sequentially includes a second optically effective portion E21d, a second reduction portion E22d, and a second peripheral portion E23d from its paraxial portion to its peripheral portion. The second optically effective portion E21d is the portion through which imaging light passes, and the second optically effective portion E21d includes an object-side optically effective surface E2Fd facing the object side and an image-side optically effective surface E2Rd facing the image side. The second reduction portion E22d connects the second optically effective portion E21d and the second peripheral portion E23d, and both the object-side surface R2Fd and the image-side surface R2Rd of the second reduction portion E22d have a roughened surface RS. The second peripheral portion E23d is used for abutment assembly with adjacent elements, and the object-side surface P2Fd of the second peripheral portion E23d has a second concentric structure AS2d. In this embodiment, the second outer peripheral portion E23d is used to abut and assemble with the first outer peripheral portion E13d of the first plastic lens E1d and the inner surface of the lens barrel 9d.

[0181] The first glass lens GL1d is disposed correspondingly to the first plastic lens E1d, and the first glass lens GL1d is disposed on the object side of the first plastic lens E1d. The first glass lens GL1d has an optically effective part through which imaging light passes, and the optically effective part includes an object-side optically effective surface facing the object side direction and an image-side optically effective surface facing the image side direction.

[0182] The second glass lens GL2d is disposed correspondingly to the second plastic lens E2d, and the second glass lens GL2d is disposed on the image side of the second plastic lens E2d. The second glass lens GL2d has an optically effective part through which imaging light passes, and the optically effective part includes an object-side optically effective surface facing the object side direction and an image-side optically effective surface facing the image side direction.

[0183] In this embodiment, the first aligning structure AS1d of the image-side surface P1Rd of the first outer peripheral portion E13d and the second aligning structure AS2d of the object-side surface P2Fd of the second outer peripheral portion E23d are correspondingly arranged so that the centers of the first plastic lens E1d and the second plastic lens E2d are aligned.

[0184] The roughened surface RS of the object-side surface R1Fd of the first reduction section E12d and the roughened surface RS of the image-side surface R1Rd of the first reduction section E12d are respectively arranged in a direction parallel to the optical axis OA.

[0185] In this embodiment, the roughened surface RS on the first reduction portion E12d and the second reduction portion E22d may appear as a white, hazy layer. Furthermore, a light-absorbing layer or an anti-reflective layer may be additionally provided on the roughened surface RS, but the present invention is not limited thereto.

[0186] The center thickness of the first optical effective part E11d is CT1, which satisfies the following condition: CT1 = 0.25 mm.

[0187] The center thickness of the second optical effective part E21d is CT2, which satisfies the following condition: CT2 = 0.28 mm.

[0188] The minimum thickness of the first reduction section E12d is ET1m, and the edge thickness of the first optical effective section E11d is ET1, which satisfies the following conditions: ET1m = 0.289 mm; ET1 = 0.316 mm; and ET1m / ET1 = 0.915.

[0189] The minimum thickness of the second reduction section E22d is ET2m, and the edge thickness of the second optical effective section E21d is ET2, which satisfy the following conditions: ET2m = 0.411 mm; ET2 = 0.467 mm; and ET2m / ET2 = 0.880.

[0190] The peripheral thickness of the first glass lens GL1d is PTG, and the center thickness of the first glass lens GL1d is CTG, which satisfy the following conditions: PTG = 0.4 mm; CTG = 1.078 mm; and PTG / CTG = 0.371.

[0191] The peripheral thickness of the second glass lens GL2d is PTG, and the center thickness of the second glass lens GL2d is CTG, which satisfy the following conditions: PTG = 0.45 mm; CTG = 0.887 mm; and PTG / CTG = 0.507.

[0192] The release force of the roughened surface RS of the first reduction section E12d is Fr1, the release force of the roughened surface RS of the object-side surface R1Fd of the first reduction section E12d is Fr1_o, the release force of the roughened surface RS of the image-side surface R1Rd of the first reduction section E12d is Fr1_i, and the release force of the first optical effective section E11d is Fs1, which satisfies the following conditions: Fr1_o / Fs1=7.7; and Fr1_i / Fs1=16.0.

[0193] The release force of the roughened surface RS of the second reduction section E22d is Fr2, the release force of the roughened surface RS of the object-side surface R2Fd of the second reduction section E22d is Fr2_o, the release force of the roughened surface RS of the image-side surface R2Rd of the second reduction section E22d is Fr2_i, and the release force of the second optical effective section E21d is Fs2, which satisfies the following conditions: Fr2_o / Fs2=2.8; and Fr2_i / Fs2=9.3.

[0194] The total number of lenses in the imaging lens group 1d is N, which satisfies the following condition: N = 7.

[0195] <Fifth Embodiment>

[0196] Please refer to Figure 13 and Figure 14 ,in Figure 13 A perspective view of one side of an electronic device according to a fifth embodiment of the present invention is shown, and Figure 14 Draw Figure 13 A three-dimensional diagram of the other side of the electronic device.

[0197] In this embodiment, the electronic device 5 is a smartphone. The electronic device 5 includes multiple camera modules, a flash module 51, a focus assist module 52, an image signal processor 53, a display module (user interface) 54, and an image software processor (not shown).

[0198] These camera modules include an ultra-wide-angle camera module 50a, a high-resolution camera module 50b, and a telephoto camera module 50c. At least one of the camera modules 50a, 50b, and 50c includes the imaging lens group of the present invention and an electronic photosensitive element, with the electronic photosensitive element disposed on the imaging surface of the imaging lens group.

[0199] The ultra-wide-angle camera module 50a has the ability to capture multiple scenes. Figure 15 A schematic diagram illustrating images captured by the ultra-wide-angle camera module 50a.

[0200] The high-resolution camera module 50b features high resolution and low distortion. The high-resolution camera module 50b can further capture… Figure 15 A portion of the image. Figure 16 A schematic diagram illustrating images captured by a high-resolution camera module 50b.

[0201] The telephoto camera module 50c features high magnification. The telephoto camera module 50c can further capture... Figure 16 A portion of the image. Figure 17 This diagram illustrates an image captured by a telephoto camera module 50c. The maximum field of view (FOV) of the camera module corresponds to... Figure 17 From that perspective.

[0202] When the user photographs a subject, the electronic device 5 uses the ultra-wide-angle camera module 50a, the high-resolution camera module 50b, or the telephoto camera module 50c to focus the light and capture an image. It also activates the flash module 51 for supplemental lighting and uses the subject distance information provided by the focus assist module 52 for rapid focusing. Furthermore, the image signal processor 53 performs image optimization processing to further improve the image quality produced by the camera module, while also providing zoom functionality. The focus assist module 52 can employ an infrared or laser focus assist system to achieve rapid focusing. The display module 54 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 54.

[0203] <Sixth Embodiment>

[0204] Please refer to Figure 18 A perspective view of one side of an electronic device according to a sixth embodiment of the present invention is shown.

[0205] In this embodiment, the electronic device 6 is a smartphone. The electronic device 6 includes camera modules 60, 60a, 60b, 60c, 60d, 60e, 60f, 60g, and 60h, a flash module 61, an image signal processor, a display device, and an image software processor (not shown). Camera modules 60, 60a, 60b, 60c, 60d, 60e, 60f, 60g, and 60h are all disposed on the same side of the electronic device 6, while the display device is disposed on the other side. At least one of the camera modules 60, 60a, 60b, 60c, 60d, 60e, 60f, 60g, and 60h includes the imaging lens group of the present invention and an electronic photosensitive element, with the electronic photosensitive element disposed on the imaging surface of the imaging lens group.

[0206] Camera module 60 is a telephoto camera module, camera module 60a is a telephoto camera module, camera module 60b is a telephoto camera module, camera module 60c is a telephoto camera module, camera module 60d is a wide-angle camera module, camera module 60e is a wide-angle camera module, camera module 60f is an ultra-wide-angle camera module, camera module 60g is an ultra-wide-angle camera module, and camera module 60h is a Time-of-Flight (ToF) camera module. In this embodiment, camera modules 60, 60a, 60b, 60c, 60d, 60e, 60f, and 60g have different viewing angles, allowing the electronic device 6 to provide different magnifications to achieve optical zoom shooting effects. Furthermore, camera modules 60 and 60a are telephoto camera modules with light-shifting elements. Additionally, camera module 60h can acquire depth information of the image. The electronic device 6 described above includes multiple camera modules 60, 60a, 60b, 60c, 60d, 60e, 60f, 60g, and 60h as an example, but the number and configuration of the camera modules are not intended to limit the present invention. When the user photographs the subject, the electronic device 6 uses camera modules 60, 60a, 60b, 60c, 60d, 60e, 60f, 60g, or 60h to focus light and capture an image, activates the flash module 61 for supplemental lighting, and performs subsequent processing in a manner similar to the aforementioned embodiments, which will not be described in detail here.

[0207] <Seventh Embodiment>

[0208] Please refer to Figures 19 to 21 ,in Figure 19 A perspective schematic diagram of an electronic device according to a fourth embodiment of the present invention is shown. Figure 20 Draw Figure 19 A side view of the electronic device, and Figure 21 Draw Figure 19 A top view of the electronic device.

[0209] In this embodiment, the electronic device 7 is a car. The electronic device 7 includes a plurality of automotive camera modules 70, and at least one of these camera modules 70 includes an imaging lens group of the present invention and an electronic photosensitive element, with the electronic photosensitive element disposed on the imaging surface of the imaging lens group. The camera module 70 can be used, for example, in a panoramic driving assistance system, a dashcam, and a reversing camera.

[0210] like Figure 19As shown, the camera module 70 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 an image processing software to provide images of the driver's blind spots, allowing the driver to monitor the surroundings of the vehicle for easier driving and parking.

[0211] like Figure 20 As shown, the camera module 70 can be installed, for example, below the left and right rearview mirrors respectively, wherein the viewing angle of the camera module 70 can be 40 degrees to 90 degrees, to capture image information within the range of the left and right lanes.

[0212] like Figure 21 As shown, the camera module 70 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.

[0213] The imaging lens group and camera module of this invention are not limited to applications in smartphones, panoramic driving assistance systems, dashcams, and reversing cameras. They can be applied to various mobile focusing systems as needed, offering both excellent aberration correction and good image quality. For example, the imaging lens group and camera module can be widely used in electronic devices such as 3D image capture, digital cameras, mobile devices, tablet computers, smart TVs, network monitoring equipment, multi-lens devices, recognition systems, motion-sensing game consoles, and wearable devices. The aforementioned electronic devices are merely illustrative examples of practical applications of this invention and do not limit the scope of application of the imaging lens group and camera module.

[0214] While the present invention has been disclosed above with reference to the foregoing embodiments, these embodiments are not intended to limit the invention. Any modifications and refinements made without departing from the spirit and scope of the invention are within the scope of patent protection of the present invention. For a description of the scope of protection defined in the present invention, please refer to the appended claims.

Claims

1. An imaging lens assembly, characterized in that, Include: A first plastic lens, wherein an optical axis of the imaging lens group passes through the first plastic lens, and the first plastic lens comprises, from its paraxial portion to its peripheral portion, the following: First optical effective part; A first reduction portion, wherein both the object-side surface and the image-side surface have at least one roughened surface; and A first outer periphery is used for assembling with adjacent components; as well as A second plastic lens is disposed on the image side of the first plastic lens, the optical axis passes through the second plastic lens, and the second plastic lens comprises, from its paraxial portion to its peripheral portion, the following components in sequence: A second optical effective part; A second reduction portion, wherein both the object-side surface and the image-side surface have at least one roughened surface; and A second outer periphery is used for assembling with adjacent components; The imaging lens group further includes a glass lens, and the glass lens is disposed in correspondence with one of the first plastic lens and the second plastic lens; The roughened surface of the first reduction portion has a white, hazy appearance, and the roughened surface of the second reduction portion also has a white, hazy appearance. Wherein, the center thickness of the first optical effective part is CT1, the center thickness of the second optical effective part is CT2, the minimum thickness of the first reduction part is ET1m, the edge thickness of the first optical effective part is ET1, the minimum thickness of the second reduction part is ET2m, the edge thickness of the second optical effective part is ET2, the peripheral thickness of the glass lens is PTG, and the center thickness of the glass lens is CTG, which satisfies the following conditions: CT1 ≤ 0.33 mm; CT2 ≤ 0.33 mm; ET1m / ET1 ≤ 1.0; ET2m / ET2 ≤ 1.0; and 0.12 ≤ PTG / CTG ≤ 1.

05.

2. The imaging lens assembly according to claim 1, characterized in that, The center thickness of the first optical effective part is CT1, which satisfies the following condition: CT1 ≤ 0.3 mm.

3. The imaging lens assembly according to claim 1, characterized in that, The center thickness of the second optical effective part is CT2, which satisfies the following condition: CT2 ≤ 0.3 mm.

4. The imaging lens assembly according to claim 1, characterized in that, The first outer peripheral portion has a first alignment structure, and the second outer peripheral portion has a second alignment structure, and the first alignment structure and the second alignment structure are correspondingly arranged so that the centers of the first plastic lens and the second plastic lens are aligned.

5. The imaging lens assembly according to claim 4, characterized in that, It also includes a third plastic lens, wherein the third plastic lens has a third alignment structure, and the third alignment structure is configured to correspond to one of the first alignment structure and the second alignment structure, so that the first plastic lens, the second plastic lens and the third plastic lens are all centered.

6. The imaging lens assembly according to claim 1, characterized in that, The glass lens is disposed on the object side of the first plastic lens.

7. The imaging lens assembly according to claim 1, characterized in that, The glass lens is disposed on the image side of the second plastic lens.

8. The imaging lens assembly according to claim 1, characterized in that, The at least one roughened surface of the object-side surface of the first reduction portion and the at least one roughened surface of the image-side surface of the first reduction portion are respectively disposed in a direction parallel to the optical axis.

9. The imaging lens assembly according to claim 1, characterized in that, The total number of lenses in the imaging lens group is N, which satisfies the following condition: N ≥ 5。 10. An imaging lens assembly, characterized in that, Include: A first plastic lens, wherein an optical axis of the imaging lens group passes through the first plastic lens, and the first plastic lens comprises, from its paraxial portion to its peripheral portion, the following: First optical effective part; A first reduction portion, wherein both the object-side surface and the image-side surface have at least one roughened surface; and A first outer periphery is used for assembling with adjacent components; as well as A second plastic lens is disposed on the image side of the first plastic lens, the optical axis passes through the second plastic lens, and the second plastic lens comprises, from its paraxial portion to its peripheral portion, the following components in sequence: A second optical effective part; A second reduction portion, wherein both the object-side surface and the image-side surface have at least one roughened surface; and A second outer periphery is used for assembling with adjacent components; The roughened surface of the first reduction portion has a white, hazy appearance, and the roughened surface of the second reduction portion also has a white, hazy appearance. Wherein, the center thickness of the first optically effective part is CT1, the center thickness of the second optically effective part is CT2, the minimum thickness of the first reduction part is ET1m, the edge thickness of the first optically effective part is ET1, the minimum thickness of the second reduction part is ET2m, the edge thickness of the second optically effective part is ET2, the release force of the roughened surface of the first reduction part is Fr1, the release force of the first optically effective part is Fs1, the release force of the roughened surface of the second reduction part is Fr2, and the release force of the second optically effective part is Fs2, which satisfies the following conditions: CT1 ≤ 0.33 mm; CT2 ≤ 0.33 mm; ET1m / ET1 ≤ 1.0; ET2m / ET2 ≤ 1.0; 1.5 ≤ Fr1 / Fs1 ≤ 25; and 1.5 ≤ Fr2 / Fs2 ≤ 25.

11. The imaging lens assembly according to claim 10, characterized in that, The release force of the at least one roughened surface on the image-side surface of the first reduction portion is Fr1_i, and the release force of the first optically effective portion is Fs1, which satisfies the following conditions: 5 ≤ Fr1_i / Fs1 ≤ 25.

12. The imaging lens assembly according to claim 10, characterized in that, The release force of the at least one roughened surface on the image-side surface of the second reduction portion is Fr2_i, and the release force of the second optically effective portion is Fs2, which satisfy the following conditions: 5 ≤ Fr2_i / Fs2 ≤ 25.

13. The imaging lens assembly according to claim 10, characterized in that, The center thickness of the first optical effective part is CT1, which satisfies the following condition: CT1 ≤ 0.3 mm.

14. The imaging lens assembly according to claim 10, characterized in that, The center thickness of the second optical effective part is CT2, which satisfies the following condition: CT2 ≤ 0.3 mm.

15. The imaging lens assembly according to claim 10, characterized in that, The first outer peripheral portion has a first alignment structure, and the second outer peripheral portion has a second alignment structure, and the first alignment structure and the second alignment structure are correspondingly arranged so that the centers of the first plastic lens and the second plastic lens are aligned.

16. The imaging lens assembly according to claim 15, characterized in that, It also includes a third plastic lens, wherein the third plastic lens has a third alignment structure, and the third alignment structure is configured to correspond to one of the first alignment structure and the second alignment structure, so that the first plastic lens, the second plastic lens and the third plastic lens are all centered.

17. The imaging lens assembly according to claim 10, characterized in that, The at least one roughened surface of the object-side surface of the first reduction portion and the at least one roughened surface of the image-side surface of the first reduction portion are respectively disposed in a direction parallel to the optical axis.

18. The imaging lens assembly according to claim 10, characterized in that, The total number of lenses in the imaging lens group is N, which satisfies the following condition: N ≥ 5。 19. A camera module, characterized in that, Include: The imaging lens group according to claim 10; and An electronic photosensitive element is disposed on an imaging surface of the imaging lens group.

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

Images