Imaging lens assembly and imaging lens module

Abstract

An imaging lens assembly and an imaging lens module, the imaging lens assembly includes a bichromatic molded lens element. The bichromatic molded lens element includes a transparent portion, a light-absorbing portion, and a step structure. The transparent portion sequentially includes an optically effective region and a transparent peripheral region from the center to the periphery, wherein an optical axis of the imaging lens assembly passes through the optically effective region, and the transparent peripheral region surrounds the optically effective region. The light-absorbing portion surrounds the optically effective region and is disposed on the object side of the transparent peripheral region, and includes an object end surface and an outer inclined surface. The object end surface faces the object side of the light-absorbing portion. The outer inclined surface extends from the object end surface to the image side of the light-absorbing portion and gradually moves away from the optical axis. The step structure connects a first outer diameter surface of the light-absorbing portion and a second outer diameter surface of the transparent portion. In this way, the light shielding efficiency is improved.

Description

[0001] This application is a divisional application of the patent application with the application date of June 30, 2020, the application number of 202010607569.X, and the invention title of "Imaging Lens Group and Imaging Lens Module". Technical Field

[0002] The present disclosure relates to an imaging lens group and an imaging lens module, and particularly to an imaging lens group and an imaging lens module applied to a portable electronic device. Background Art

[0003] In recent years, portable electronic devices have developed rapidly, such as smart electronic devices, tablet computers, etc., which have flooded into modern people's lives. The imaging lens modules and their imaging lens groups installed on portable electronic devices have also developed vigorously. However, with the progress of technology, users' requirements for the quality of imaging lens groups are getting higher and higher. Therefore, developing an imaging lens group that combines miniaturization, easy manufacturing, and good imaging effects has become an important and urgent problem in the industry. Summary of the Invention

[0004] The present disclosure provides an imaging lens group and an imaging lens module, which replace the front end of the plastic lens barrel of the imaging lens module through a two-color molded lens, providing the feasibility of its miniaturization.

[0005] According to an embodiment of the present disclosure, an imaging lens group is provided, which includes a two-color molded lens element. The two-color molded lens element includes a transparent part, a light absorption part, and a step difference structure. The transparent part sequentially includes an optically effective area and a transparent outer periphery area from the center to the periphery. An optical axis of the imaging lens group passes through the optically effective area, and the transparent outer periphery area surrounds the optically effective area. The light absorption part surrounds the optically effective area and is disposed on the object side of the transparent outer periphery area, and includes an object end face and an outer inclined surface. The object end face faces the object side of the light absorption part. The outer inclined surface extends from the object end face to the image side of the light absorption part and gradually moves away from the optical axis. The step difference structure connects a first outer diameter surface of the light absorption part and a second outer diameter surface of the transparent part. The distance from the object end face to the step difference structure is Ld, the diameter of the first outer diameter surface is ψD, the diameter of a minimum opening of the light absorption part is ψd, and the focal length of the imaging lens group is f, which satisfies the following conditions: 0.6 < Ld / ((ψD - ψd) / 2) < 2.5; and 1.15 < f / ψd < 2.80.

[0006] For the imaging lens group according to the above-mentioned embodiment, where the diameter of the first outer diameter surface is ψD and the outer diameter of the object end face is ψo, it can satisfy the following conditions: 0.40 < ψo / ψD < 0.75.

[0007] According to the imaging lens assembly of the embodiment described above, the center thickness of the optically effective area is CT, and the distance from the image-side center of the optically effective area to the object end face is FT, which can satisfy the following condition: 1.0 <FT / CT<1.2。

[0008] According to the imaging lens assembly of the embodiment described above, the center thickness of the optically effective area is CT, and the minimum thickness of the transparent peripheral area is ETmin, which can satisfy the following condition: ETmin / CT < 0.35. Additionally, it can satisfy the following condition: ETmin / CT ≤ 0.25.

[0009] According to the imaging lens group of the embodiment described above, the distance from the object end face to the step structure is Ld, which can satisfy the following condition: 0.5mm <Ld<2.0mm。

[0010] According to the imaging lens assembly of the embodiment described above, the dual-color molded lens element may further include at least a slit structure, the slit structure extending from the light-absorbing portion to the transparent peripheral region.

[0011] According to one embodiment of this disclosure, an imaging lens module is provided, comprising an imaging lens group as described in the preceding embodiment and a plastic lens barrel. The minimum opening of the light-absorbing portion of the bichromatic molded lens element of the imaging lens group includes a pointed minimum opening and two tapered surfaces. The pointed minimum opening forms an aperture of the imaging lens module. The tapered surfaces taper from the object side and image side of the light-absorbing portion toward the pointed minimum opening, respectively.

[0012] According to the imaging lens module of the embodiment described above, the optically effective area may include an object-side surface and an image-side surface, one of which is an aspherical surface.

[0013] According to the imaging lens module of the embodiment described above, the outer diameter of the object-side surface is ψY, and the diameter of the minimum opening of the light-absorbing part is ψd, which can satisfy the following condition: 0.7 < ψd / ψY ≤ 1.

[0014] According to the imaging lens module of the embodiment described above, the distance from the tip minimum aperture to the object side of the transparent part along the direction parallel to the optical axis is d1, and the distance from the tip minimum aperture to the image side of the transparent part along the direction parallel to the optical axis is d2, which can satisfy the following condition: 0≤d1 / (d1+d2)<0.8.

[0015] According to the imaging lens module of the embodiment described above, the light absorption section may include at least one light-absorbing structure, which is composed of a plurality of strip-shaped grooves, and the strip-shaped grooves are arranged in at least one of the following ways: arranged in a circumferential direction and arranged around the optical axis of the imaging lens group.

[0016] An imaging lens module according to the embodiment described in the previous paragraph, wherein the extinction structure can be disposed on at least one of the tapered surfaces.

[0017] An imaging lens module according to the embodiment described in the previous paragraph, wherein the plastic lens barrel can include a top surface facing the object side of the imaging lens module, and the object end face is located on the object side of the top surface. The distance from the object end face to the top surface is Lo, which can satisfy the following condition: 0.3 mm < Lo < 1.5 mm.

[0018] An imaging lens module according to the embodiment described in the previous paragraph, wherein the imaging lens group can further include an imaging lens element. The imaging lens element is disposed on the image side of the two-color molded lens element. The two-color molded lens element can include an axial connection structure. The axial connection structure is located in the transparent peripheral region and corresponds to the imaging lens element. The axial connection structure can include an annular plane and an inclined conical surface. The annular plane and the inclined conical surface are used for axial connection with the imaging lens element.

[0019] According to an embodiment of the present disclosure, an imaging lens module is provided, which includes an imaging lens group and a plastic lens barrel. The imaging lens group includes a two-color molded lens element, wherein the two-color molded lens element includes a transparent portion and a light absorption portion. The transparent portion sequentially includes an optically effective region and a transparent peripheral region from the center to the periphery. An optical axis of the imaging lens group passes through the optically effective region, and the transparent peripheral region surrounds the optically effective region. The light absorption portion surrounds the optically effective region and is disposed on the object side of the transparent peripheral region, and includes an object end face and an outer inclined surface. The object end face faces the object side, and the outer inclined surface extends from the object end face toward the image side of the light absorption portion and gradually远离 the optical axis. The plastic lens barrel is used to load the imaging lens group and includes a top surface, wherein the top surface faces the object side of the imaging lens module. The object end face is located on the object side of the top surface. The distance from the object end face to the top surface is Lo, the focal length of the imaging lens group is f, and the diameter of a minimum opening of the light absorption portion is ψd, which satisfy the following conditions: 0.3 mm < Lo < 1.5 mm; and 1.15 < f / ψd < 2.80.

[0020] An imaging lens module according to the embodiment described in the previous paragraph, wherein the minimum aperture of the plastic lens barrel is ψb, and the outer diameter of the object end face is ψo, which can satisfy the following condition: 0.5 < ψo / ψb ≤ 0.95.

[0021] An imaging lens module according to the embodiment described in the previous paragraph, wherein the central thickness of the optically effective region is CT, and the distance from the image-side center of the optically effective region to the object end face is FT, which can satisfy the following condition: 1.0 < FT / CT < 1.2.

[0022] An imaging lens module according to the embodiment described in the previous paragraph, wherein the focal length of the imaging lens group is f, and the diameter of the minimum opening of the light absorption portion is ψd, which can satisfy the following condition: 1.45 ≤ f / ψd ≤ 2.50.

[0023] According to the imaging lens module of the embodiment described above, the imaging lens group may further include an imaging lens element. The imaging lens element is disposed on the image side of the dual-color molding lens element. The dual-color molding lens element may include an axial connection structure. The axial connection structure is located in the transparent peripheral area and corresponds to the imaging lens element. The axial connection structure may include a ring plane and a conical surface. The ring plane and the conical surface are used to axially connect with the imaging lens element.

[0024] According to the imaging lens module of the embodiment described above, the center thickness of the optically effective area is CT, and the minimum thickness of the transparent peripheral area is ETmin, which can satisfy the following condition: ETmin / CT < 0.35. Additionally, it can satisfy the following condition: ETmin / CT ≤ 0.25. Attached Figure Description

[0025] Figure 1A A perspective view of the imaging lens module according to the first embodiment of the present invention is shown;

[0026] Figure 1B Draw Figure 1A A schematic diagram of the imaging lens module in the first embodiment;

[0027] Figure 1C Draw Figure 1A A partial cross-sectional view of the imaging lens module in the first embodiment;

[0028] Figure 1D Draw Figure 1A A schematic diagram of the object side of the dual-color molded lens element in the first embodiment;

[0029] Figure 1E Draw Figure 1A A perspective view of the dual-color molded lens element in the first embodiment;

[0030] Figure 1F Draw Figure 1A Another perspective view of the dual-color molded lens element in the first embodiment;

[0031] Figure 1G Draw Figure 1A A cross-sectional schematic diagram of the dual-color molded lens element in the first embodiment;

[0032] Figure 1H Draw Figure 1A A schematic diagram of the parameters of the dual-color molded lens element in the first embodiment;

[0033] Figure 1I Draw Figure 1A Another parameter diagram of the dual-color molded lens element in the first embodiment;

[0034] Figure 2AA schematic diagram of an imaging lens module according to a second embodiment of the present invention is shown;

[0035] Figure 2B Draw Figure 2A A schematic diagram of the object side of the dual-color molded lens element in the second embodiment;

[0036] Figure 2C Draw Figure 2A A schematic diagram of the parameters of the dual-color molded lens element in the second embodiment;

[0037] Figure 2D Draw Figure 2A Another parameter diagram of the dual-color molded lens element in the second embodiment;

[0038] Figure 3A A schematic diagram of an imaging lens module according to a third embodiment of the present invention is shown;

[0039] Figure 3B Draw Figure 3A A schematic diagram of the object side of the dual-color molded lens element in the third embodiment;

[0040] Figure 3C Draw Figure 3A A schematic diagram of the parameters of the dual-color molded lens element in the third embodiment;

[0041] Figure 3D Draw Figure 3A Another parameter diagram of the dual-color molded lens element in the third embodiment;

[0042] Figure 4A A schematic diagram of an imaging lens module according to a fourth embodiment of the present invention is shown;

[0043] Figure 4B Draw Figure 4A A schematic diagram of the object side of the dual-color molded lens element in the fourth embodiment;

[0044] Figure 4C Draw Figure 4A A schematic diagram of the parameters of the two-color molded lens element in the fourth embodiment;

[0045] Figure 4D Draw Figure 4A Another parameter diagram of the dual-color molded lens element in the fourth embodiment;

[0046] Figure 5A A schematic diagram of an imaging lens module according to a fifth embodiment of the present invention is shown;

[0047] Figure 5B Draw Figure 5A A schematic diagram of the object side of the dual-color molded lens element in the fifth embodiment;

[0048] Figure 5C Draw Figure 5A A schematic diagram of the parameters of the two-color molded lens element in the fifth embodiment;

[0049] Figure 5D Draw Figure 5A Another parameter diagram of the dual-color molded lens element in the fifth embodiment;

[0050] Figure 6A A schematic diagram of an electronic device according to the sixth embodiment of this disclosure is shown;

[0051] Figure 6B Drawing according to Figure 6A Block diagram of the electronic device in the sixth embodiment;

[0052] Figure 6C Drawing according to Figure 6A A schematic diagram of a selfie scene in the sixth embodiment; and

[0053] Figure 6D Drawing according to Figure 6A A schematic diagram of the images captured in the sixth embodiment.

[0054] [Symbol Explanation]

[0055] 10, 20, 30, 40, 50, 61: Imaging lens module

[0056] 11,21,31,41,51: Two-color molded lens elements

[0057] 12,22,32,42,52: Plastic lens barrel

[0058] 12a, 22a, 32a, 42a, 52a: Top surface

[0059] 13,14,15,16,17,23,24,25,26,27,33,34,35,36,37,43,44,45,53,54,55: Imaging lens elements

[0060] 110, 210, 310, 410, 510: Transparent areas

[0061] 111,211,311,411,511: Effective optical area

[0062] 112,212,312,412,512: Transparent outer perimeter area

[0063] 113,213,313,413,513: Second outer diameter surface

[0064] 114, 214, 314, 414, 514: Object-side surface

[0065] 115, 215, 315, 415, 515: Image-side surface

[0066] 120, 220, 320, 420, 520: Light Absorption Section

[0067] 121,221,321,421,521: End face of the object

[0068] 122,222,322,422,522: External bevel

[0069] 123,223,323,423,523: Minimum opening

[0070] 124,224,324,424,524: First outer diameter surface

[0071] 125, 325, 425, 525: Extinction structure

[0072] 126,226,326,426,526: Side bearing surface

[0073] 127, 227, 327, 427, 527: Minimum aperture at the tip

[0074] 128, 228, 328, 428, 528: tapered surfaces

[0075] 129: Strip-shaped groove

[0076] 130, 230, 330, 430, 530: Step structure

[0077] 140, 240, 340, 440, 540: Cutting structure

[0078] 150, 250, 350: Axial connection structure

[0079] 151,251,351: Circular plane

[0080] 152,252,352: Inclined cone surface

[0081] 60: Electronic devices

[0082] 61a: Imaging lens group

[0083] 61b: Electronic photosensitive element

[0084] 62: User Interface

[0085] 63: Imaging signal processing element

[0086] 64: Optical anti-shake component

[0087] 65: Sensing element

[0088] 66: Flash module

[0089] 67: Focusing Assist Module

[0090] X: Optical axis

[0091] Ld: Distance from the end face of the object to the stepped structure

[0092] ψD: Diameter of the first outer diameter surface

[0093] ψd: Diameter of the minimum opening of the light-absorbing part

[0094] ψo: Outer diameter of the object's end face

[0095] FT: Distance from the image-side center of the optically effective region to the object-side surface

[0096] CT: Center thickness of the optically effective region

[0097] ETmin: Minimum thickness of the transparent outer perimeter region

[0098] ψY: Outer diameter of the object's side surface

[0099] d1: The distance from the object side of the transparent portion to the object side surface along the direction parallel to the optical axis, where the minimum aperture at the tip is located.

[0100] d2: The distance from the minimum aperture at the tip to the image side of the transparent part along the direction parallel to the optical axis.

[0101] Lo: Distance from the end face to the top face of the object

[0102] ψb: Minimum aperture of the plastic lens barrel

[0103] f: Focal length of the imaging lens group Detailed Implementation

[0104] This disclosure provides an imaging lens assembly including a dichroic molded lens element. The dichroic molded lens element includes a transparent portion and a light-absorbing portion. The transparent portion sequentially includes an optically effective area and a transparent peripheral area from its center to its periphery. An optical axis of the imaging lens assembly passes through the optically effective area, and the transparent peripheral area surrounds the optically effective area. The light-absorbing portion surrounds the optically effective area and is disposed on the object side of the transparent peripheral area, and includes an object end face and an outer bevel. The object end face faces the object side of the light-absorbing portion, and the outer bevel extends from the object end face towards the image side of the light-absorbing portion and gradually moves away from the optical axis. This provides a dichroic molded lens element with a small-head structure, providing feasibility for miniaturization of the imaging lens module. Furthermore, the object end face and the outer bevel can replace the peripheral light-shielding function of conventional lens barrels, thereby simplifying the structural complexity of the lens barrel and preventing collisions and interference between the dichroic molded lens element and the lens barrel during assembly.

[0105] The imaging lens assembly also includes a step structure that connects a first outer diameter surface of the light-absorbing section to a second outer diameter surface of the transparent section. This simplifies the mold design for injection molding and improves the stability of dimensional accuracy. Specifically, the step structure can be positioned on the light-absorbing section or on the transparent peripheral area, depending on the mold design and injection method.

[0106] Specifically, the two-color molded lens element can be integrally manufactured by two-stage injection molding. First, the transparent part is formed by the first injection, and then the light-absorbing part is formed by the second injection. The light-absorbing part and the transparent outer periphery of the transparent part are tightly bonded during molding, but the molding order is not limited to this. The transparent part can be made of transparent plastic, and the light-absorbing part can be made of black plastic. The light-absorbing part can absorb non-imaging light.

[0107] The outer bevel forms an angle with the optical axis (not shown in the figure), and the angle can be between 1 degree and 40 degrees to provide the draft angle during molding, but is not limited to this angle range.

[0108] The minimum opening of the light-absorbing section includes a pointed minimum opening and two tapered surfaces. The pointed minimum opening contacts the optically effective area and forms an aperture of the imaging lens module. The tapered surfaces taper from the object side and image side of the light-absorbing section towards the pointed minimum opening. Specifically, the pointed minimum opening is the aperture of the imaging lens module, which can be used to control the amount of light entering the imaging lens module, and the diameter of the pointed minimum opening is the same as the diameter of the minimum opening of the light-absorbing section. Furthermore, the aperture design can be optimized by controlling the precision of the mold, allowing the aperture to be directly concentrically set with the optically effective area after the bichromatic molded lens element is formed. Therefore, unlike the traditional method of using assembled light-blocking elements as apertures in lenses, the configuration described in this disclosure directly avoids assembly tolerances.

[0109] The two-color molded lens element may further include at least one slit structure, which extends from the light-absorbing portion to the transparent peripheral area. Specifically, the surface properties of the slit structure are different from the surface of its surrounding area, and the shape of the slit structure is not specific. This provides a matching mold design for secondary injection molding, simplifying the process and increasing production capacity. More specifically, the surface of the slit structure may be transparent plastic, black plastic, partially transparent plastic and partially black plastic, or a mixture of transparent plastic and black plastic, but is not limited to these.

[0110] The optically effective region may include an object-side surface and an image-side surface, one of which is aspherical. This provides high-precision light refraction and reduces optical aberrations. Furthermore, because the minimum aperture at the tip is in contact with the object-side surface of the optically effective region, the extent of the object-side surface of the optically effective region can be directly defined.

[0111] The light absorption portion may include at least one extinction structure, which is composed of a plurality of strip-shaped grooves, and the strip-shaped grooves are arranged in a circumferential direction and / or arranged around the optical axis of the imaging lens group. Thereby, the ability of the light absorption portion to absorb stray light can be enhanced, and the molding feasibility can be maintained. Specifically, through the way that the strip-shaped grooves are arranged around the optical axis of the imaging lens group, the extinction structure is arranged at the connection between the transparent portion and the light absorption portion. Thereby, the plastics formed by secondary injection molding can be more tightly joined.

[0112] The extinction structure may be arranged on at least one of the tapered surfaces. Specifically, the extinction structure may be arranged on the object-side or image-side tapered surface of the smallest opening at the tip. Specifically, high-intensity stray light is likely to be generated around the smallest opening at the tip, so the tapered surface needs to have a high-efficiency light absorption ability. Therefore, by arranging the extinction structure on the tapered surface, the efficiency of eliminating stray light around the smallest opening at the tip can be improved.

[0113] Furthermore, the light absorption portion may have a barb design. Thereby, the plastics formed by secondary injection molding can be more tightly joined.

[0114] The imaging lens group may further include an imaging lens element, and the imaging lens element is arranged on the image side of the two-color molded lens element. Specifically, the two-color molded lens element is arranged on the outermost object side of the imaging lens group. The two-color molded lens element may further include an axial connection structure, and the axial connection structure is located in the transparent peripheral area and corresponds to the imaging lens element, and the axial connection structure may include an annular plane and an inclined conical surface, and the annular plane and the inclined conical surface are used for axially connecting with the imaging lens element. Specifically, the axial connection structure is used to center-align the two-color molded lens element and its adjacent imaging lens element along the direction parallel to the optical axis, that is, the center positions are all located on the optical axis. Thereby, the coaxiality between the two-color molded lens element and the imaging lens element is increased, and the assembly efficiency is improved.

[0115] The distance from the object end face to the step difference structure is Ld, the diameter of the first outer diameter surface is ψD, and the diameter of a smallest opening of the light absorption portion is ψd, and they satisfy the following conditions: 0.6 < Ld / ((ψD - ψd) / 2) < 2.5. Thereby, the light absorption portion can exert a higher light shielding efficiency. Furthermore, it may satisfy the following conditions: 0.8 < Ld / ((ψD - ψd) / 2) < 2.2. Thereby, the light absorption portion has a higher proportion range of light shielding efficiency.

[0116] The diameter of the first outer diameter surface is ψD, and the outer diameter of the object end face is ψo, and they may satisfy the following conditions: 0.40 < ψo / ψD < 0.75. Thereby, there is a better light shielding effect under the miniaturized structure.

[0117] The central thickness of the optical effective area is CT, and the distance from the image-side center of the optical effective area to the object end face is FT, which can satisfy the following conditions: 1.0 < FT / CT < 1.2. Thereby, under the condition of maintaining the optical specifications, a structural design that can effectively prevent mechanism interference can be achieved.

[0118] The central thickness of the optical effective area is CT, and the minimum thickness of the transparent peripheral area is ETmin, which can satisfy the following conditions: ETmin / CT < 0.35. Specifically, the peripheral narrowing structure can improve the problem of uneven plastic filling during injection molding and enhance the molding yield. Furthermore, it can satisfy the following conditions: ETmin / CT ≤ 0.25. Specifically, at a specific ratio, the flow rate and flow direction of the plastic in the narrowing structure will be more stable, and the probability of stray light generation in the transparent peripheral area will be reduced.

[0119] The distance from the object end face to the step structure is Ld, which can satisfy the following conditions: 0.5 mm < Ld < 2.0 mm. Thereby, a large range of light shielding can be provided to prevent non-imaging light in the peripheral area from entering the imaging system of the imaging lens group.

[0120] The outer diameter of the object-side surface is ψY, and the diameter of the minimum opening of the light absorption part is ψd, which can satisfy the following conditions: 0.7 < ψd / ψY ≤ 1. Thereby, the probability of internal surface reflection between the two-color molded lens element and the imaging lens element can be reduced.

[0121] The distance from the minimum opening of the tip along the direction parallel to the optical axis to the object-side surface of the transparent part is d1, and the distance from the minimum opening of the tip along the direction parallel to the optical axis to the image-side surface of the transparent part is d2, which can satisfy the following conditions: 0 ≤ d1 / (d1 + d2) < 0.8. Specifically, in traditional optical designs, the aperture light shielding position is designed outside the lens and is at least a specific distance away from the optical mirror surface, while the minimum opening of the tip in the present disclosure can be attached to the object-side surface of the transparent part or buried in the transparent part. Thereby, a more flexible design solution for the aperture position in optical design can be provided.

[0122] Each of the technical features in the imaging lens group of the present disclosure can be combined and configured to achieve the corresponding effects.

[0123] The present disclosure provides an imaging lens module, including the aforementioned imaging lens group and a plastic lens barrel, wherein the plastic lens barrel loads the imaging lens group. Furthermore, the light absorption part may further include an object-side bearing surface, which faces the object side and is farther away from the optical axis than the outer inclined surface, and is used for bearing and assembling with the plastic lens barrel. Thereby, the minimum opening of the tip can replace the opening light shielding of the plastic lens barrel, thereby simplifying the opening structure of the plastic lens barrel and reducing the manufacturing cost of the plastic lens barrel.

[0124] The plastic lens barrel includes a top surface, where the top surface faces the object side of the imaging lens module, and the object end surface of the light absorption part is located on the object side of the top surface. Further, both the object end surface and the top surface are substantially perpendicular to the optical axis.

[0125] The two-color molded lens element may further include an axial connection structure corresponding to the plastic lens barrel, and the axial connection structure corresponding to the plastic lens barrel is located in the light absorption part. Thereby, the two-color molded lens element and the plastic lens barrel are centered and aligned along the direction parallel to the optical axis.

[0126] The distance from the object end surface to the top surface is Lo, which satisfies the following condition: 0.3 mm < Lo < 1.5 mm. Thereby, the small head structure is not limited by the spatial configuration of the plastic lens barrel, achieving the design of pushing forward the two-color molded lens element.

[0127] The minimum aperture of the plastic lens barrel is ψb, and the outer diameter of the object end surface is ψo, which can satisfy the following condition: 0.5 < ψo / ψb ≤ 0.95. Thereby, it can effectively prevent collisions during assembly and maintain the structural integrity of the two-color molded lens element.

[0128] The focal length of the imaging lens group is f, and the diameter of the minimum opening of the light absorption part is ψd, which can satisfy the following condition: 1.15 < f / ψd < 2.80. Thereby, under the design of miniaturization of the imaging lens module, high-standard optical quality can be maintained. Further, it can satisfy the following condition: 1.45 ≤ f / ψd ≤ 2.50. Thereby, within a suitable range can be configured while maintaining the balance between the optical quality and miniaturization of the imaging lens module.

[0129] According to the above embodiments, specific embodiments are proposed below and will be described in detail with reference to the accompanying drawings.

[0130] <First Embodiment>

[0131] Please refer to Figures 1A to 1C , Figure 1A , which shows a perspective view of the imaging lens module 10 in the first embodiment of the present invention. Figure 1B shows Figure 1A a schematic diagram of the imaging lens module 10 in the first embodiment. Figure 1C shows Figure 1A a partial cross-sectional view of the imaging lens module 10 in the first embodiment. As can be seen from Figures 1A to 1C , the imaging lens module 10 includes an imaging lens group (not labeled in the figure) and a plastic lens barrel 12. The imaging lens group includes a two-color molded lens element 11. The plastic lens barrel 12 houses the imaging lens group, and the plastic lens barrel includes a top surface 12a, where the top surface 12a faces the object side of the imaging lens module

[0132] Furthermore, the imaging lens group also includes an imaging lens element disposed on the image side of the dichroic molding lens element 11. In the first embodiment, the imaging lens group includes, from the object side to the image side, the dichroic molding lens element 11, and imaging lens elements 13, 14, 15, 16, and 17, wherein the dichroic molding lens element 11 is disposed on the object side of the imaging lens group. Moreover, the number, structure, surface shape, and other optical characteristics of the imaging lens elements can be configured according to different imaging requirements, and other optical elements can be provided as needed, without limitation.

[0133] Figure 1D Draw Figure 1A A schematic diagram of the object side of the dual-color molded lens element 11 in the first embodiment. Figure 1E Draw Figure 1A A perspective view of the dual-color molded lens element 11 in the first embodiment. Figure 1F Draw Figure 1A Another perspective view of the dual-color molded lens element 11 in the first embodiment. Figure 1G Draw Figure 1A A cross-sectional schematic diagram of the two-color molded lens element 11 in the first embodiment. Figures 1D to 1G It is known that the two-color molded lens element 11 includes a transparent part 110, a light-absorbing part 120 and a step structure 130.

[0134] Specifically, the dual-color molded lens element 11 can be integrally manufactured by two injection molding processes. First, the transparent portion 110 is formed by a first injection molding process, followed by a second injection molding process to form the light-absorbing portion 120. The light-absorbing portion 120 and the transparent peripheral area 112 of the transparent portion 110 are tightly bonded during molding, but the molding order is not limited to this. The transparent portion 110 can be made of transparent plastic, and the light-absorbing portion 120 can be made of black plastic. The light-absorbing portion 120 absorbs non-imaging light. Therefore, this disclosure provides a dual-color molded lens element 11 with a small-head structure, providing feasibility for miniaturizing the imaging lens module 10.

[0135] The transparent portion 110 includes, from its center to its periphery, an optically effective region 111 and a transparent peripheral region 112, wherein an optical axis X of the imaging lens group passes through the optically effective region 111, and the transparent peripheral region 112 surrounds the optically effective region 111. Furthermore, an imaging ray (not shown) of the imaging lens group passes through the optically effective region 111.

[0136] The light-absorbing section 120 surrounds the optically effective area 111 and is disposed on the object side of the transparent peripheral area 112. It includes an object end face 121, an outer bevel 122, and a minimum opening 123. The object end face 121 faces the object side, and the outer bevel 122 extends from the object end face 121 toward the image side of the light-absorbing section 120 and gradually moves away from the optical axis X. In this way, the object end face 121 and the outer bevel 122 can replace the peripheral light-shielding function of the plastic lens barrel 12, thereby simplifying the structural complexity of the plastic lens barrel 12. It can also prevent collisions and interference between the bicolor molded lens elements 11, imaging lens elements 13, 14, 15, 16, 17 and the plastic lens barrel 12 during assembly.

[0137] Furthermore, the object end face 121 is located on the object side of the top surface 12a, and both the object end face 121 and the top surface 12a are substantially perpendicular to the optical axis X. The outer bevel 122 forms an angle with the optical axis X (not shown in the figure), and the angle can be between 1 degree and 40 degrees to provide the draft angle during molding, but is not limited to this angle range.

[0138] Depend on Figure 1C and Figure 1G It is understood that the stepped structure 130 connects a first outer diameter surface 124 of the light-absorbing portion 120 and a second outer diameter surface 113 of the transparent portion 110. This simplifies the mold design for injection molding and improves the stability of dimensional accuracy. Specifically, the stepped structure 130 can be positioned on the light-absorbing portion 120 or on the transparent peripheral area 112, depending on different mold designs and injection methods. In the first embodiment, the stepped structure 130 is located on the light-absorbing portion 120.

[0139] Depend on Figures 1D to 1G It is understood that the dual-color molded lens element 11 may further include at least one slit structure. In the first embodiment, the number of slit structures 140 is two, but this is not a limitation. The slit structure 140 extends from the light-absorbing portion 120 to the transparent peripheral area 112. Specifically, the surface properties of the slit structure 140 are different from the surface of its surrounding area, and the shape of the slit structure 140 is not specific. In the first embodiment, the slit structure 140 is rectangular, but this is not a limitation. This provides a matching mold design for secondary injection molding, which simplifies the process and increases production capacity. In detail, the surface of the slit structure 140 may be transparent plastic, black plastic, partially transparent plastic and partially black plastic, or a mixture of transparent plastic and black plastic, but this is not a limitation.

[0140] The minimum opening 123 of the light absorbing section 120 includes a pointed minimum opening 127 and two tapered surfaces 128. The pointed minimum opening 127 is in contact with the optical effective area 111 and forms an aperture of the imaging lens module. The tapered surfaces 128 taper from the object side and the image side of the light absorbing section 120 toward the pointed minimum opening 127.

[0141] Specifically, the minimum aperture 127 at the tip is the aperture of the imaging lens module 10, which can be used to control the amount of light entering the imaging lens module 10, and the diameter of the minimum aperture 127 at the tip is the same as the diameter of the minimum aperture 123 of the light-absorbing part 120. Therefore, the minimum aperture 127 at the tip can replace the light-blocking opening of the plastic lens barrel 12, thereby simplifying the opening structure of the plastic lens barrel 12 and reducing the manufacturing cost of the plastic lens barrel 12.

[0142] Furthermore, the aperture design, through precise mold control, allows the aperture to be directly concentrically positioned with the optically effective area 111 after the bicolor molded lens element 11 is formed. Therefore, unlike the traditional method of using an assembled light-blocking element as the aperture in lenses, the configuration described in this disclosure directly avoids assembly tolerances.

[0143] Depend on Figures 1A to 1D and Figure 1G It is understood that the light-absorbing portion 120 includes at least one extinction structure. In the first embodiment, the number of extinction structures 125 is two. The extinction structure 125 is composed of a plurality of strip-shaped grooves 129, and the strip-shaped grooves 129 are arranged in at least one of the following ways: either arranged in a circumferential direction or surrounding the optical axis X of the imaging lens group. This enhances the ability of the light-absorbing portion 120 to absorb stray light and maintains molding feasibility. In the first embodiment, the strip-shaped grooves 129 of the extinction structure 125 near the object side of the dual-color molding lens element 11 are arranged in a circumferential direction, while the strip-shaped grooves 129 of the extinction structure 125 near the image side of the dual-color molding lens element 11 surround the optical axis X of the imaging lens group, but are not limited thereto. Specifically, the extinction structure 125 is disposed at the connection between the transparent portion 110 and the light-absorbing portion 120 by surrounding the optical axis X of the imaging lens group with the strip-shaped grooves 129. This allows for a tighter bond between the plastics produced by secondary injection molding.

[0144] The light-extinguishing structure 125 can be disposed on at least one of the tapered surfaces 128. Specifically, in the first embodiment, the light-extinguishing structure 125 near the object side of the dichroic molded lens element 11 is disposed on the tapered surface 128 on the object side of the minimum aperture 127. In detail, high-intensity stray light is easily generated around the minimum aperture 127, therefore the tapered surface 128 needs to have a high light absorption efficiency. Therefore, by disposing the light-extinguishing structure 125 on the tapered surface 128, the efficiency of eliminating stray light around the minimum aperture 127 can be improved.

[0145] Furthermore, by Figure 1B It is understood that the light-absorbing part 120 also includes an object-side bearing surface 126, which faces the object side and is farther away from the optical axis X than the outer inclined surface 122, for bearing and assembling with the plastic lens barrel 12.

[0146] The optically effective region 111 includes an object-side surface 114 and an image-side surface 115, one of which is aspherical. In the first embodiment, both the object-side surface 114 and the image-side surface 115 are aspherical. This provides high-precision light refraction force and reduces optical aberrations. In the first embodiment, the minimum aperture 127 at the tip is in contact with the object-side surface 114 of the optically effective region 111, thus directly defining the extent of the object-side surface 114 of the optically effective region 111.

[0147] In detail, traditional optical designs typically place the aperture shading position outside the lens and maintain a specific distance from the optical mirror. However, the minimum aperture 127 disclosed herein can be attached to the object-side surface 114 of the transparent portion 110, or it can be embedded within the transparent portion 110. In the first embodiment, the minimum aperture 127 is attached to the object-side surface 114 of the transparent portion 110, but this is not a limitation.

[0148] Depend on Figure 1B It is understood that the dual-color molded lens element 11 also includes an axial connection structure 150, which is located in the transparent peripheral region 112 and corresponds to the imaging lens element 13. Specifically, the dual-color molded lens element 11 is connected to the imaging lens element 13 through the axial connection structure 150.

[0149] In detail, the axial connection structure 150 of the dichroic molding lens element 11 includes a ring plane 151 and a conical surface 152, which are used to axially connect with the imaging lens element 13. Specifically, the axial connection structure 150 aligns the dichroic molding lens element 11 and its adjacent imaging lens element 13 along the direction parallel to the optical axis X, meaning their centers are both located on the optical axis X. This increases the coaxiality between the dichroic molding lens element 11 and the imaging lens element 13 and improves assembly efficiency.

[0150] Figure 1H Draw Figure 1A A schematic diagram of the parameters of the two-color molded lens element 11 in the first embodiment. Figure 1I Draw Figure 1A Another parameter diagram of the bicolor molded lens element 11 in the first embodiment. Figure 1B , Figure 1H and Figure 1IIt can be seen that the distance from the object end face 121 to the step structure 130 is Ld, the diameter of the first outer diameter surface 124 is ψD, the diameter of the minimum opening 123 of the light absorption part 120 is ψd, the outer diameter of the object end face 121 is ψo, the center thickness of the optical effective area 111 is CT, the distance from the image side center of the optical effective area 111 to the object end face 121 is FT, the minimum thickness of the transparent peripheral area 112 is ETmin, the outer diameter of the object side surface 114 is ψY, the distance from the minimum opening 127 at the tip along the direction parallel to the optical axis X to the object side of the transparent part 110 to the object side surface 114 is d1, the distance from the minimum opening 127 at the tip along the direction parallel to the optical axis X to the image side of the transparent part 110 to the image side surface 115 is d2, the distance from the object end face 121 to the top surface 12a is Lo, the minimum aperture of the plastic lens barrel 12 is ψb, and the focal length of the imaging lens group is f. The parameters satisfy the conditions in Table 1 below.

[0151]

[0152] It is worth mentioning that in the first embodiment, ψd=ψY.

[0153] <Second Embodiment>

[0154] Please refer to Figure 2A , Figure 2A A schematic diagram of the imaging lens module 20 according to a second embodiment of the present invention is shown. Figure 2A As can be seen, the imaging lens module 20 includes an imaging lens group (not shown) and a plastic lens barrel 22. The imaging lens group includes a dichroic molded lens element 21. The plastic lens barrel 22 mounts the imaging lens group and includes a top surface 22a, wherein the top surface 22a faces the object side of the imaging lens module 20.

[0155] Furthermore, the imaging lens group also includes an imaging lens element disposed on the image side of the dichroic molding lens element 21. In the second embodiment, the imaging lens group includes, from the object side to the image side, a dichroic molding lens element 21, and imaging lens elements 23, 24, 25, 26, and 27, wherein the dichroic molding lens element 21 is disposed on the outermost object side of the imaging lens group. Moreover, the number, structure, surface shape, and other optical characteristics of the imaging lens elements can be configured according to different imaging requirements, and other optical elements can be provided as needed, without limitation.

[0156] Figure 2B Draw Figure 2A A schematic diagram of the object side of the dual-color molded lens element 21 in the second embodiment. Figure 2C Draw Figure 2A A schematic diagram of the parameters of the two-color molded lens element 21 in the second embodiment. Figure 2D Draw Figure 2AAnother parameter diagram of the dual-color molded lens element 21 in the second embodiment. Figures 2B to 2D It is known that the two-color molded lens element 21 includes a transparent part 210, a light-absorbing part 220 and a step structure 230.

[0157] Specifically, the dual-color molded lens element 21 can be integrally manufactured by two injection molding processes. First, the transparent portion 210 is formed by a first injection molding process, followed by a second injection molding process to form the light-absorbing portion 220. The light-absorbing portion 220 and the transparent peripheral area 212 of the transparent portion 210 are tightly bonded during molding, but the molding order is not limited to this. The transparent portion 210 can be made of transparent plastic, and the light-absorbing portion 220 can be made of black plastic. The light-absorbing portion 220 absorbs non-imaging light. Therefore, this disclosure provides a dual-color molded lens element 21 with a small-head structure, providing feasibility for miniaturizing the imaging lens module 20.

[0158] The transparent portion 210 includes, from its center to its periphery, an optically effective region 211 and a transparent peripheral region 212. An optical axis X of the imaging lens group passes through the optically effective region 211, and the transparent peripheral region 212 surrounds the optically effective region 211. Furthermore, an imaging ray (not shown) of the imaging lens group passes through the optically effective region 211.

[0159] The light-absorbing section 220 surrounds the optically effective area 211 and is disposed on the object side of the transparent peripheral area 212. It includes an object end face 221, an outer bevel 222, and a minimum opening 223. The object end face 221 faces the object side, and the outer bevel 222 extends from the object end face 221 toward the image side of the light-absorbing section 220 and gradually moves away from the optical axis X. In this way, the object end face 221 and the outer bevel 222 can replace the peripheral light-shielding function of the plastic lens barrel 22, thereby simplifying the structural complexity of the plastic lens barrel 22. It can also prevent collisions and interference between the bicolor molded lens elements 21, imaging lens elements 23, 24, 25, 26, 27 and the plastic lens barrel 22 during assembly.

[0160] Furthermore, the object end face 221 is located on the object side of the top surface 22a, and both the object end face 221 and the top surface 22a are substantially perpendicular to the optical axis X. The outer bevel 222 forms an angle with the optical axis X (not shown in the figure), and the angle can be between 1 degree and 40 degrees to provide the draft angle during molding, but is not limited to this angle range.

[0161] Depend on Figure 2C and Figure 2DIt is understood that the step structure 230 connects a first outer diameter surface 224 of the light-absorbing portion 220 and a second outer diameter surface 213 of the transparent portion 210. This simplifies the mold design for injection molding and improves the stability of dimensional accuracy. Specifically, the step structure 230 can be positioned on the light-absorbing portion 220 or on the transparent peripheral area 212, depending on different mold designs and injection methods. In the second embodiment, the step structure 230 is located on the light-absorbing portion 220.

[0162] Depend on Figures 2B to 2C It is understood that the dual-color molded lens element 21 may further include at least one slit structure. In the second embodiment, the number of slit structures 240 is one, but not limited thereto. The slit structure 240 extends from the light-absorbing portion 220 to the transparent peripheral area 212. Specifically, the surface properties of the slit structure 240 are different from the surface of its surrounding area, and the shape of the slit structure 240 is not specific. In the second embodiment, the slit structure 240 is rectangular, but not limited thereto. This provides a matching mold design for secondary injection molding, which simplifies the process and increases production capacity. In detail, the surface of the slit structure 240 may be transparent plastic, black plastic, partially transparent plastic and partially black plastic, or a mixture of transparent plastic and black plastic, but is not limited thereto.

[0163] The minimum opening 223 of the light absorption section 220 includes a pointed minimum opening 227 and two tapered surfaces 228. The pointed minimum opening 227 is in contact with the optical effective area 211 and forms an aperture of the imaging lens module. The tapered surfaces 228 taper from the object side and the image side of the light absorption section 220 toward the pointed minimum opening 227.

[0164] Specifically, the minimum aperture 227 at the tip is the aperture of the imaging lens module 20, which can be used to control the amount of light entering the imaging lens module 20, and the diameter of the minimum aperture 227 at the tip is the same as the diameter of the minimum aperture 223 of the light-absorbing part 220. Therefore, the minimum aperture 227 at the tip can replace the light-blocking opening of the plastic lens barrel 22, thereby simplifying the opening structure of the plastic lens barrel 22 and reducing its manufacturing cost.

[0165] Furthermore, the aperture design, through precise mold control, allows the aperture to be directly concentrically positioned with the optically effective area 211 after the bicolor molded lens element 21 is formed. Therefore, unlike the traditional method of using an assembled light-blocking element as the aperture in lenses, the configuration described in this disclosure directly avoids assembly tolerances.

[0166] Furthermore, by Figure 2A It is known that the light-absorbing part 220 also includes an object-side bearing surface 226, which faces the object side and is farther away from the optical axis X than the outer inclined surface 222, for bearing and assembling with the plastic lens barrel 22.

[0167] The optically effective region 211 includes an object-side surface 214 and an image-side surface 215, one of which is aspherical. In the second embodiment, both the object-side surface 214 and the image-side surface 215 are aspherical. This provides high-precision light refraction force and reduces optical aberrations. In the second embodiment, the minimum aperture 227 at the tip is in contact with the object-side surface 214 of the optically effective region 211, so the extent of the object-side surface 214 of the optically effective region 211 can be directly defined.

[0168] In detail, traditional optical designs typically place the aperture shading position outside the lens and maintain a specific distance from the optical mirror. However, the minimum aperture 227 disclosed herein can be attached to the object-side surface 214 of the transparent portion 210, or it can be embedded within the transparent portion 210. In the second embodiment, the minimum aperture 227 is attached to the object-side surface 214 of the transparent portion 210, but this is not a limitation.

[0169] Depend on Figure 2A It is understood that the dual-color molded lens element 21 also includes an axial connection structure, which is located in the transparent peripheral region 212 and corresponds to the imaging lens element 23. In the second embodiment, the dual-color molded lens element 21 includes two axial connection structures 250, which are located in the transparent peripheral region 212 and the light-absorbing part 220, respectively. The axial connection structure 250 located in the transparent peripheral region 212 corresponds to the imaging lens element 23, while the axial connection structure 250 located in the light-absorbing part 220 corresponds to the plastic lens barrel 22. Specifically, the dual-color molded lens element 21 is connected to the imaging lens element 23 and the plastic lens barrel 22 respectively through the axial connection structures 250. In detail, the axial connection structure 250 located in the transparent peripheral region 212 includes an annular plane 251 and an oblique conical surface 252, which are used to axially connect with the imaging lens element 23. In detail, the axial connection structure 250 located in the transparent peripheral area 212 is used to align the center of the dichroic molded lens element 21 and its adjacent imaging lens element 23 along the direction parallel to the optical axis X, that is, their centers are both located on the optical axis X. Meanwhile, the axial connection structure 250 located in the light-absorbing section 220 is used to align the center of the dichroic molded lens element 21 and the plastic lens barrel 22 along the direction parallel to the optical axis X. This increases the coaxiality between the dichroic molded lens element 21 and the imaging lens element 23 and improves assembly efficiency.

[0170] Depend on Figure 2A , Figure 2C and Figure 2DIt can be seen that the distance from the object end face 221 to the step structure 230 is Ld, the diameter of the first outer diameter surface 224 is ψD, the diameter of the minimum opening 223 of the light absorption part 220 is ψd, the outer diameter of the object end face 221 is ψo, the center thickness of the optical effective area 211 is CT, the distance from the image side center of the optical effective area 211 to the object end face 221 is FT, the minimum thickness of the transparent peripheral area 212 is ETmin, the outer diameter of the object side surface 214 is ψY, the distance from the minimum opening 227 at the tip along the direction parallel to the optical axis X to the object side of the transparent part 210 to the object side surface 214 is d1, the distance from the minimum opening 227 at the tip along the direction parallel to the optical axis X to the image side of the transparent part 210 to the image side surface 215 is d2, the distance from the object end face 221 to the top surface 22a is Lo, the minimum aperture of the plastic lens barrel 22 is ψb, and the focal length of the imaging lens group is f. The parameters satisfy the conditions in Table 2 below.

[0171]

[0172]

[0173] It is worth mentioning that in the second embodiment, ψd = ψY.

[0174] <Third Embodiment>

[0175] Please refer to Figure 3A , Figure 3A A schematic diagram of the imaging lens module 30 according to a third embodiment of the present invention is shown. Figure 3A As can be seen, the imaging lens module 30 includes an imaging lens group (not shown) and a plastic lens barrel 32. The imaging lens group includes a dichroic molded lens element 31. The plastic lens barrel 32 mounts the imaging lens group and includes a top surface 32a, wherein the top surface 32a faces the object side of the imaging lens module 30.

[0176] Furthermore, the imaging lens group also includes an imaging lens element, which is disposed on the image side of the dichroic molding lens element 31. In the third embodiment, the imaging lens group includes, from the object side to the image side, a dichroic molding lens element 31, and imaging lens elements 33, 34, 35, 36, and 37, wherein the dichroic molding lens element 31 is disposed on the object side of the imaging lens group. Moreover, the number, structure, surface shape, and other optical characteristics of the imaging lens elements can be configured according to different imaging requirements, and other optical elements can be provided as needed, without limitation.

[0177] Figure 3B Draw Figure 3A A schematic diagram of the object side of the dual-color molded lens element 31 in the third embodiment. Figure 3C Draw Figure 3A A schematic diagram of the parameters of the dual-color molded lens element 31 in the third embodiment. Figure 3DDraw Figure 3A Another parameter diagram of the dual-color molded lens element 31 in the third embodiment. Figures 3B to 3D It is known that the two-color molded lens element 31 includes a transparent part 310, a light-absorbing part 320 and a step structure 330.

[0178] Specifically, the dual-color molded lens element 31 can be integrally manufactured by two injection molding processes. First, the transparent portion 310 is formed by a first injection molding process, followed by a second injection molding process to form the light-absorbing portion 320. The light-absorbing portion 320 and the transparent peripheral area 312 of the transparent portion 310 are tightly bonded during molding, but the molding sequence is not limited to this. The transparent portion 310 can be made of transparent plastic, and the light-absorbing portion 320 can be made of black plastic. The light-absorbing portion 320 absorbs non-imaging light. Therefore, this disclosure provides a dual-color molded lens element 31 with a small-head structure, providing feasibility for miniaturizing the imaging lens module 30.

[0179] The transparent portion 310 includes, from its center to its periphery, an optically effective region 311 and a transparent peripheral region 312. An optical axis X of the imaging lens group passes through the optically effective region 311, and the transparent peripheral region 312 surrounds the optically effective region 311. Furthermore, an imaging ray (not shown) of the imaging lens group passes through the optically effective region 311.

[0180] The light-absorbing section 320 surrounds the optically effective area 311 and is disposed on the object side of the transparent peripheral area 312. It includes an object end face 321, an outer bevel 322, and a minimum opening 323. The object end face 321 faces the object side, and the outer bevel 322 extends from the object end face 321 toward the image side of the light-absorbing section 320 and gradually moves away from the optical axis X. In this way, the object end face 321 and the outer bevel 322 can replace the peripheral light-shielding function of the plastic lens barrel 32, thereby simplifying the structural complexity of the plastic lens barrel 32. It can also prevent collisions and interference between the bicolor molded lens element 31, the imaging lens elements 33, 34, 35, 36, 37 and the plastic lens barrel 32 during assembly.

[0181] Furthermore, the object end face 321 is located on the object side of the top surface 32a, and both the object end face 321 and the top surface 32a are substantially perpendicular to the optical axis X. The outer bevel 322 forms an angle with the optical axis X (not shown in the figure), and the angle can be between 1 degree and 40 degrees to provide the draft angle during molding, but is not limited to this angle range.

[0182] Depend on Figure 3C and Figure 3DIt is understood that the stepped structure 330 connects a first outer diameter surface 324 of the light-absorbing part 320 and a second outer diameter surface 313 of the transparent part 310. This simplifies the mold design for injection molding and improves the stability of dimensional accuracy. Specifically, the stepped structure 330 can be positioned on the light-absorbing part 320 or on the transparent peripheral area 312, depending on different mold designs and injection methods. In the third embodiment, the stepped structure 330 is located on the transparent peripheral area 312.

[0183] Depend on Figures 3B to 3C It is understood that the dual-color molded lens element 31 may further include at least one slit structure. In the third embodiment, the number of slit structures 340 is one, but not limited thereto. The slit structure 340 extends from the light-absorbing portion 320 to the transparent peripheral area 312. Specifically, the surface properties of the slit structure 340 are different from the surface of its surrounding area, and the shape of the slit structure 340 is not specific. In the third embodiment, the slit structure 340 is rectangular, but not limited thereto. This provides a matching mold design for secondary injection molding, which simplifies the process and increases production capacity. In detail, the surface of the slit structure 340 may be transparent plastic, black plastic, partially transparent plastic and partially black plastic, or a mixture of transparent plastic and black plastic, but is not limited thereto.

[0184] The minimum opening 323 of the light absorption section 320 includes a pointed minimum opening 327 and two tapered surfaces 328. The pointed minimum opening 327 is in contact with the optical effective area 311 and forms an aperture of the imaging lens module. The tapered surfaces 328 taper from the object side and the image side of the light absorption section 320 toward the pointed minimum opening 327.

[0185] Specifically, the minimum aperture 327 at the tip is the aperture of the imaging lens module 30, which can be used to control the amount of light entering the imaging lens module 30, and the diameter of the minimum aperture 327 at the tip is the same as the diameter of the minimum aperture 323 of the light-absorbing part 320. Therefore, the minimum aperture 327 at the tip can replace the light-blocking opening of the plastic lens barrel 32, thereby simplifying the opening structure of the plastic lens barrel 32 and reducing its manufacturing cost.

[0186] Furthermore, the aperture design, through precise mold control, allows the aperture to be directly concentrically positioned with the optically effective area 311 after the bicolor molded lens element 31 is formed. Therefore, unlike the traditional method of using an assembled light-blocking element as the aperture in lenses, the configuration described in this disclosure directly avoids assembly tolerances.

[0187] Depend on Figures 3A to 3DIt is understood that the light-absorbing section 320 includes at least one light-extinguishing structure. In the third embodiment, the number of light-extinguishing structures 325 is one. The light-extinguishing structure 325 consists of a plurality of strip-shaped grooves (not shown in the figure), and the strip-shaped grooves are arranged in at least one of the following ways: either arranged in a circumferential direction or arranged around the optical axis X of the imaging lens group. This enhances the ability of the light-absorbing section 320 to absorb stray light and maintains molding feasibility. In the third embodiment, the strip-shaped grooves of the light-extinguishing structure 325 of the light-absorbing section 320 are arranged in a circumferential direction, but are not limited thereto. This allows for a tighter bond in the secondary injection-molded plastic.

[0188] The extinction structure 325 can be disposed on at least one of the tapered surfaces 328. Specifically, in the third embodiment, the extinction structure 325 is disposed on the tapered surface 328 on the object side of the minimum aperture 327. In detail, high-intensity stray light is easily generated around the minimum aperture 327, therefore the tapered surface 328 needs to have a high light absorption efficiency. Therefore, by disposing the extinction structure 325 on the tapered surface 328, the efficiency of eliminating stray light around the minimum aperture 327 can be improved.

[0189] Furthermore, by Figure 3A It is understood that the light-absorbing part 320 also includes an object-side bearing surface 326, which faces the object side and is farther away from the optical axis X than the outer inclined surface 322, for bearing and assembling with the plastic lens barrel 32.

[0190] The optically effective region 311 includes an object-side surface 314 and an image-side surface 315, one of which is aspherical. In the third embodiment, both the object-side surface 314 and the image-side surface 315 are aspherical. This provides high-precision light refraction force and reduces optical aberrations.

[0191] In detail, traditional optical designs typically place the aperture shading position outside the lens and maintain a certain distance from the optical mirror. However, the minimum aperture 327 disclosed herein can be attached to the object-side surface 314 of the transparent portion 310, or it can be embedded within the transparent portion 310. In the third embodiment, the minimum aperture 327 is embedded within the transparent portion 310, but this is not a limitation.

[0192] Depend on Figure 3A It is understood that the dual-color molded lens element 31 also includes an axial connection structure 350, which is located in the transparent peripheral region 312 and corresponds to the imaging lens element 33. Specifically, the dual-color molded lens element 31 is connected to the imaging lens element 33 through the axial connection structure 350.

[0193] In detail, the axial connection structure 350 includes a ring plane 351 and a tapered surface 352, which are used to axially connect with the imaging lens element 33. Specifically, the axial connection structure 350 aligns the dichroic molding lens element 31 and its adjacent imaging lens element 33 along the direction parallel to the optical axis X, meaning their centers are both located on the optical axis X. This increases the coaxiality between the dichroic molding lens element 31 and the imaging lens element 33 and improves assembly efficiency.

[0194] Depend on Figure 3A , Figure 3C and Figure 3D It can be seen that the distance from the object end face 321 to the step structure 330 is Ld, the diameter of the first outer diameter surface 324 is ψD, the diameter of the minimum opening 323 of the light absorption part 320 is ψd, the outer diameter of the object end face 321 is ψo, the center thickness of the optical effective area 311 is CT, the distance from the image side center of the optical effective area 311 to the object end face 321 is FT, the minimum thickness of the transparent peripheral area 312 is ETmin, the outer diameter of the object side surface 314 is ψY, the distance from the minimum opening 327 at the tip along the direction parallel to the optical axis X to the object side of the transparent part 310 to the object side surface 314 is d1, the distance from the minimum opening 327 at the tip along the direction parallel to the optical axis X to the image side of the transparent part 310 to the image side surface 315 is d2, the distance from the object end face 321 to the top surface 32a is Lo, the minimum aperture of the plastic lens barrel 32 is ψb, and the focal length of the imaging lens group is f. The parameters satisfy the conditions in Table 3 below.

[0195]

[0196] <Fourth Embodiment>

[0197] Please refer to Figure 4A , Figure 4A A schematic diagram of an imaging lens module 40 according to a fourth embodiment of the present invention is shown. Figure 4A As can be seen, the imaging lens module 40 includes an imaging lens group (not shown) and a plastic lens barrel 42. The imaging lens group includes a dichroic molded lens element 41. The plastic lens barrel 42 mounts the imaging lens group and includes a top surface 42a, wherein the top surface 42a faces the object side of the imaging lens module 40.

[0198] Furthermore, the imaging lens group also includes an imaging lens element, which is disposed on the image side of the dichroic molding lens element 41. In the fourth embodiment, the imaging lens group includes, from the object side to the image side, a dichroic molding lens element 41, imaging lens elements 43, 44, and 45, wherein the dichroic molding lens element 41 is disposed on the outermost object side of the imaging lens group. Moreover, the number, structure, surface shape, and other optical characteristics of the imaging lens elements can be configured according to different imaging requirements, and other optical elements can be provided as needed, without limitation.

[0199] Figure 4B Draw Figure 4A A schematic diagram of the object side of the dual-color molded lens element 41 in the fourth embodiment. Figure 4C Draw Figure 4A A schematic diagram of the parameters of the two-color molded lens element 41 in the fourth embodiment. Figure 4D Draw Figure 4A Another parameter diagram of the dual-color molded lens element 41 in the fourth embodiment. (From...) Figures 4B to 4D It is known that the dual-color molded lens element 41 includes a transparent portion 410, a light-absorbing portion 420, and a step structure 430.

[0200] Specifically, the dual-color molded lens element 41 can be integrally manufactured by two injection molding processes. First, the transparent portion 410 is formed by a first injection molding process, followed by a second injection molding process to form the light-absorbing portion 420. The light-absorbing portion 420 and the transparent peripheral area 412 of the transparent portion 410 are tightly bonded during molding, but the molding sequence is not limited to this. The transparent portion 410 can be made of transparent plastic, and the light-absorbing portion 420 can be made of black plastic. The light-absorbing portion 420 absorbs non-imaging light. Therefore, this disclosure provides a dual-color molded lens element 41 with a small-head structure, providing feasibility for miniaturizing the imaging lens module 40.

[0201] The transparent portion 410 includes, from its center to its periphery, an optically effective region 411 and a transparent peripheral region 412. An optical axis X of the imaging lens group passes through the optically effective region 411, and the transparent peripheral region 412 surrounds the optically effective region 411. Furthermore, an imaging ray (not shown) of the imaging lens group passes through the optically effective region 411.

[0202] The light-absorbing section 420 surrounds the optically effective area 411 and is disposed on the object side of the transparent peripheral area 412. It includes an object end face 421, an outer bevel 422, and a minimum opening 423. The object end face 421 faces the object side, and the outer bevel 422 extends from the object end face 421 toward the image side of the light-absorbing section 420 and gradually moves away from the optical axis X. In this way, the object end face 421 and the outer bevel 422 can replace the peripheral light-shielding function of the plastic lens barrel 42, thereby simplifying the structural complexity of the plastic lens barrel 42. It can also prevent collisions and interference between the bicolor molded lens element 41, the imaging lens elements 43, 44, 45 and the plastic lens barrel 42 during assembly.

[0203] Furthermore, the object end face 421 is located on the object side of the top surface 42a, and both the object end face 421 and the top surface 42a are substantially perpendicular to the optical axis X. The outer bevel 422 forms an angle with the optical axis X (not shown in the figure), and the angle can be between 1 degree and 40 degrees to provide the draft angle during molding, but is not limited to this angle range.

[0204] Depend on Figure 4C and Figure 4D It is understood that the stepped structure 430 connects a first outer diameter surface 424 of the light-absorbing portion 420 and a second outer diameter surface 413 of the transparent portion 410. This simplifies the mold design for injection molding and improves the stability of dimensional accuracy. Specifically, the stepped structure 430 can be positioned on the light-absorbing portion 420 or on the transparent peripheral area 412, depending on different mold designs and injection methods. In the fourth embodiment, the stepped structure 430 is located on the light-absorbing portion 420.

[0205] Depend on Figures 4B to 4C It is understood that the dual-color molded lens element 41 may further include at least one slit structure. In the fourth embodiment, the number of slit structures 440 is one, but not limited thereto. The slit structure 440 extends from the light-absorbing portion 420 to the transparent peripheral area 412. Specifically, the surface properties of the slit structure 440 are different from the surface of its surrounding area, and the shape of the slit structure 440 is not specific. In the fourth embodiment, the slit structure 440 is rectangular, but not limited thereto. This provides a matching mold design for secondary injection molding, which simplifies the process and increases production capacity. In detail, the surface of the slit structure 440 may be transparent plastic, black plastic, partially transparent plastic and partially black plastic, or a mixture of transparent plastic and black plastic, but is not limited thereto.

[0206] The minimum opening 423 of the light absorption section 420 includes a pointed minimum opening 427 and two tapered surfaces 428. The pointed minimum opening 427 is in contact with the optical effective area 411 and forms an aperture of the imaging lens module. The tapered surfaces 428 taper from the object side and the image side of the light absorption section 420 toward the pointed minimum opening 427.

[0207] Specifically, the minimum aperture 427 at the tip is the aperture of the imaging lens module 40, which can be used to control the amount of light entering the imaging lens module 40, and the diameter of the minimum aperture 427 at the tip is the same as the diameter of the minimum aperture 423 of the light-absorbing part 420. Therefore, the minimum aperture 427 at the tip can replace the light-blocking opening of the plastic lens barrel 42, thereby simplifying the opening structure of the plastic lens barrel 42 and reducing its manufacturing cost.

[0208] Furthermore, the aperture design, through precise mold control, allows the aperture to be directly concentrically positioned with the optically effective area 411 after the bicolor molded lens element 41 is formed. Therefore, unlike the traditional method of using an assembled light-blocking element as the aperture in lenses, the configuration described in this disclosure directly avoids assembly tolerances.

[0209] Depend on Figures 4A to 4D It is understood that the light-absorbing section 420 includes at least one light-extinguishing structure. In the fourth embodiment, the number of light-extinguishing structures 425 is one. The light-extinguishing structure 425 consists of a plurality of strip-shaped grooves (not shown in the figure), and the strip-shaped grooves are arranged in at least one of the following ways: either arranged in a circumferential direction or arranged around the optical axis X of the imaging lens group. This enhances the ability of the light-absorbing section 420 to absorb stray light and maintains molding feasibility. In the fourth embodiment, the strip-shaped grooves of the light-extinguishing structure 425 of the light-absorbing section 420 are arranged in a circumferential direction, but are not limited thereto. This allows for a tighter bond in the secondary injection-molded plastic.

[0210] In the fourth embodiment, the light-absorbing part 420 may have a barb design. This allows for a tighter bond between the secondary injection-molded plastic parts.

[0211] The extinction structure 425 can be disposed on at least one of the tapered surfaces 428. Specifically, in the fourth embodiment, the extinction structure 425 is disposed on the image-side of the tapered surface 428 of the minimum aperture 427. In detail, high-intensity stray light is easily generated around the minimum aperture 427, therefore the tapered surface 428 needs to have a high light absorption efficiency. Therefore, by disposing the extinction structure 425 on the tapered surface 428, the efficiency of eliminating stray light around the minimum aperture 427 can be improved.

[0212] Furthermore, by Figure 4AIt is known that the light-absorbing part 420 also includes an object-side bearing surface 426, which faces the object side and is farther away from the optical axis X than the outer inclined surface 422, for bearing and assembling with the plastic lens barrel 42.

[0213] The optically effective region 411 includes an object-side surface 414 and an image-side surface 415, one of which is aspherical. In the fourth embodiment, both the object-side surface 414 and the image-side surface 415 are aspherical. This provides high-precision light refraction force and reduces optical aberrations.

[0214] In detail, traditional optical designs typically place the aperture shading position outside the lens and maintain a specific distance from the optical mirror. However, the minimum aperture 427 disclosed herein can be attached to the object-side surface 414 of the transparent portion 410, or it can be embedded within the transparent portion 410. In the fourth embodiment, the minimum aperture 427 is embedded within the transparent portion 410, but this is not a limitation.

[0215] Depend on Figure 4A , Figure 4C and Figure 4D It can be seen that the distance from the object end face 421 to the step structure 430 is Ld, the diameter of the first outer diameter surface 424 is ψD, the diameter of the minimum opening 423 of the light absorption part 420 is ψd, the outer diameter of the object end face 421 is ψo, the center thickness of the optical effective area 411 is CT, the distance from the image side center of the optical effective area 411 to the object end face 421 is FT, the minimum thickness of the transparent peripheral area 412 is ETmin, the outer diameter of the object side surface 414 is ψY, the distance from the minimum opening 427 at the tip along the direction parallel to the optical axis X to the object side of the transparent part 410 to the object side surface 414 is d1, the distance from the minimum opening 427 at the tip along the direction parallel to the optical axis X to the image side of the transparent part 410 to the image side surface 415 is d2, the distance from the object end face 421 to the top surface 42a is Lo, the minimum aperture of the plastic lens barrel 42 is ψb, and the focal length of the imaging lens group is f. The parameters satisfy the conditions in Table 4 below.

[0216]

[0217] <Fifth Embodiment>

[0218] Please refer to Figure 5A , Figure 5A A schematic diagram of an imaging lens module 50 according to a fifth embodiment of the present invention is shown. Figure 5A As can be seen, the imaging lens module 50 includes an imaging lens group (not shown) and a plastic lens barrel 52. The imaging lens group includes a dichroic molded lens element 51. The plastic lens barrel 52 mounts the imaging lens group and includes a top surface 52a, wherein the top surface 52a faces the object side of the imaging lens module 50.

[0219] Furthermore, the imaging lens group also includes an imaging lens element, which is disposed on the image side of the dichroic molding lens element 51. In the fifth embodiment, the imaging lens group includes, from the object side to the image side, a dichroic molding lens element 51, imaging lens elements 53, 54, and 55, wherein the dichroic molding lens element 51 is disposed on the object side of the imaging lens group. Moreover, the number, structure, surface shape, and other optical characteristics of the imaging lens elements can be configured according to different imaging requirements, and other optical elements can be provided as needed, without limitation.

[0220] Figure 5B Draw Figure 5A A schematic diagram of the object side of the dual-color molded lens element 51 in the fifth embodiment. Figure 5C Draw Figure 5A A schematic diagram of the parameters of the two-color molded lens element 51 in the fifth embodiment. Figure 5D Draw Figure 5A Another parameter diagram of the dual-color molded lens element 51 in the fifth embodiment. (From...) Figures 5B to 5D It is known that the two-color molded lens element 51 includes a transparent part 510, a light-absorbing part 520 and a step structure 530.

[0221] Specifically, the dual-color molded lens element 51 can be integrally manufactured by two injection molding processes. First, the transparent portion 510 is formed by a first injection molding process, followed by a second injection molding process to form the light-absorbing portion 520. The light-absorbing portion 520 and the transparent peripheral area 512 of the transparent portion 510 are tightly bonded during molding, but the molding order is not limited to this. The transparent portion 510 can be made of transparent plastic, and the light-absorbing portion 520 can be made of black plastic. The light-absorbing portion 520 absorbs non-imaging light. Therefore, this disclosure provides a dual-color molded lens element 51 with a small-head structure, providing feasibility for miniaturizing the imaging lens module 50.

[0222] The transparent portion 510 includes, from its center to its periphery, an optically effective region 511 and a transparent peripheral region 512. An optical axis X of the imaging lens group passes through the optically effective region 511, and the transparent peripheral region 512 surrounds the optically effective region 511. Furthermore, an imaging ray (not shown) of the imaging lens group passes through the optically effective region 511.

[0223] The light-absorbing section 520 surrounds the optically effective area 511 and is disposed on the object side of the transparent peripheral area 512. It includes an object end face 521, an outer bevel 522, and a minimum opening 523. The object end face 521 faces the object side, and the outer bevel 522 extends from the object end face 521 toward the image side of the light-absorbing section 520 and gradually moves away from the optical axis X. In this way, the object end face 521 and the outer bevel 522 can replace the peripheral light-shielding function of the plastic lens barrel 52, thereby simplifying the structural complexity of the plastic lens barrel 52. It can also prevent collisions and interference between the bicolor molded lens elements 51, imaging lens elements 53, 54, 55 and the plastic lens barrel 52 during assembly.

[0224] Furthermore, the object end face 521 is located on the object side of the top surface 52a, and both the object end face 521 and the top surface 52a are substantially perpendicular to the optical axis X. The outer bevel 522 forms an angle with the optical axis X (not shown in the figure), and the angle can be between 1 degree and 40 degrees to provide the draft angle during molding, but is not limited to this angle range.

[0225] Depend on Figure 5C and Figure 5D It is understood that the stepped structure 530 connects a first outer diameter surface 524 of the light-absorbing portion 520 and a second outer diameter surface 513 of the transparent portion 510. This simplifies the mold design for injection molding and improves the stability of dimensional accuracy. Specifically, the stepped structure 530 can be positioned on the light-absorbing portion 520 or on the transparent peripheral area 512, depending on different mold designs and injection methods. In the fifth embodiment, the stepped structure 530 is located on the light-absorbing portion 520.

[0226] Depend on Figures 5B to 5C It is understood that the dual-color molded lens element 51 may further include at least one slit structure. In the fifth embodiment, the number of slit structures 540 is two, but not limited thereto. The slit structure 540 extends from the light-absorbing portion 520 to the transparent peripheral area 512. Specifically, the surface properties of the slit structure 540 are different from the surface of its surrounding area, and the shape of the slit structure 540 is not specific. In the fifth embodiment, the slit structure 540 is rectangular, but not limited thereto. This provides a matching mold design for secondary injection molding, which simplifies the process and increases production capacity. In detail, the surface of the slit structure 540 may be transparent plastic, black plastic, partially transparent plastic and partially black plastic, or a mixture of transparent plastic and black plastic, but is not limited thereto.

[0227] The minimum opening 523 of the light absorption section 520 includes a pointed minimum opening 527 and two tapered surfaces 528. The pointed minimum opening 527 is in contact with the optical effective area 511 and forms an aperture of the imaging lens module. The tapered surfaces 528 taper from the object side and the image side of the light absorption section 520 toward the pointed minimum opening 527.

[0228] Specifically, the minimum aperture 527 at the tip is the aperture of the imaging lens module 50, which can be used to control the amount of light entering the imaging lens module 50, and the diameter of the minimum aperture 527 at the tip is the same as the diameter of the minimum aperture 523 of the light-absorbing part 520. Therefore, the minimum aperture 527 at the tip can replace the light-blocking opening of the plastic lens barrel 52, thereby simplifying the opening structure of the plastic lens barrel 52 and reducing the manufacturing cost of the plastic lens barrel 52.

[0229] Furthermore, the aperture design, through precise mold control, allows the aperture to be directly concentrically positioned with the optically effective area 511 after the bicolor molded lens element 51 is formed. Therefore, unlike the traditional method of using an assembled light-blocking element as the aperture in lenses, the configuration described in this disclosure directly avoids assembly tolerances.

[0230] Depend on Figures 5A to 5D It is understood that the light-absorbing section 520 includes at least one light-extinguishing structure. In the fifth embodiment, the number of light-extinguishing structures 525 is one. The light-extinguishing structure 525 consists of a plurality of strip-shaped grooves (not shown in the figure), and the strip-shaped grooves are arranged in at least one of the following ways: either arranged in a circumferential direction or arranged around the optical axis X of the imaging lens group. This enhances the ability of the light-absorbing section 520 to absorb stray light and maintains molding feasibility. In the fifth embodiment, the strip-shaped grooves of the light-absorbing section 520's light-extinguishing structure 525 are arranged around the optical axis X of the imaging lens group, but are not limited thereto. This allows for a tighter bond in the secondary injection-molded plastic.

[0231] Furthermore, by Figure 5A It is understood that the light-absorbing part 520 also includes an object-side bearing surface 526, which faces the object side and is farther away from the optical axis X than the outer inclined surface 522, for bearing and assembling with the plastic lens barrel 52.

[0232] The optically effective region 511 includes an object-side surface 514 and an image-side surface 515, one of which is aspherical. In the fifth embodiment, both the object-side surface 514 and the image-side surface 515 are aspherical. This provides high-precision light refraction force and reduces optical aberrations.

[0233] In detail, traditional optical designs typically place the aperture shading position outside the lens and maintain a certain distance from the optical mirror. However, the minimum aperture 527 disclosed herein can be attached to the object-side surface 514 of the transparent portion 510, or it can be embedded within the transparent portion 510. In the fifth embodiment, the minimum aperture 527 is embedded within the transparent portion 510, but this is not a limitation.

[0234] Depend on Figure 5A , Figure 5C and Figure 5D It can be seen that the distance from the object end face 521 to the step structure 530 is Ld, the diameter of the first outer diameter surface 524 is ψD, the diameter of the minimum opening 523 of the light absorption part 520 is ψd, the outer diameter of the object end face 521 is ψo, the center thickness of the optical effective area 511 is CT, the distance from the image side center of the optical effective area 511 to the object end face 521 is FT, the minimum thickness of the transparent peripheral area 512 is ETmin, the outer diameter of the object side surface 514 is ψY, the distance from the minimum opening 527 at the tip along the direction parallel to the optical axis X to the object side of the transparent part 510 to the object side surface 514 is d1, the distance from the minimum opening 527 at the tip along the direction parallel to the optical axis X to the image side of the transparent part 510 to the image side surface 515 is d2, the distance from the object end face 521 to the top surface 52a is Lo, the minimum aperture of the plastic lens barrel 52 is ψb, and the focal length of the imaging lens group is f. The parameters satisfy the conditions in Table 5 below.

[0235]

[0236] <Sixth Embodiment>

[0237] Figure 6A A schematic diagram of the electronic device 60 according to the sixth embodiment of this disclosure is shown. Figure 6B Drawing according to Figure 6A A block diagram of the electronic device 60 in the sixth embodiment. Figure 6A and Figure 6B As can be seen, the electronic device 60 is a smartphone and includes an imaging lens module 61, wherein the imaging lens module 61 includes an imaging lens group 61a, an electronic photosensitive element 61b, and a plastic lens barrel (not shown). In the sixth embodiment, the imaging lens module 61 is disposed in the area on the side of the user interface 62, and the electronic photosensitive element 61b is disposed on the imaging surface of the imaging lens module 61 (not shown). The user interface 62 may be a touch screen or a display screen, and is not limited thereto. The imaging lens module 61 may be any of the aforementioned first to fifth embodiments, but the present disclosure is not limited thereto.

[0238] Furthermore, the user enters the shooting mode through the user interface 62 of the electronic device 60. At this time, the imaging lens module 61 gathers the imaging light onto the electronic photosensitive element 61b and outputs the relevant electronic signal of the image to the image signal processing element (ISP) 63.

[0239] Depending on the camera specifications of the electronic device 60, the electronic device 60 may further include an optical image stabilization component 64, which may be an OIS image stabilization feedback device. Furthermore, the electronic device 60 may also include at least one auxiliary optical element (not otherwise labeled) and at least one sensing element 65. In the sixth embodiment, the auxiliary optical element is a flash module 66 and a focus assist module 67. The flash module 66 can be used to compensate for color temperature, and the focus assist module 67 may be an infrared rangefinder, a laser focus module, etc. The sensing element 65 may have the function of sensing physical momentum and kinetic energy, such as an accelerometer, gyroscope, or Hall effect element, to sense the shaking and tremors caused by the user's hand or the external environment. This facilitates the performance of the autofocus function and optical image stabilization component 64 configured in the imaging lens module 61 of the electronic device 60, resulting in good image quality. This helps the electronic device 60 according to the present disclosure to have multiple shooting modes, such as optimized Selfie, low-light HDR (High Dynamic Range) imaging, and high-resolution 4K video recording. In addition, the user can directly view the camera's shooting screen from the touch screen and manually operate the framing on the touch screen to achieve a WYSIWYG autofocus function.

[0240] In addition, the electronic device 60 may also include, but is not limited to, a display unit, a control unit, a storage unit, a random access memory (RAM), a read-only memory (ROM), or a combination thereof.

[0241] Figure 6C Drawing according to Figure 6A A schematic diagram of a selfie scene in the sixth embodiment. Figure 6D Drawing according to Figure 6A A schematic diagram of the images captured in the sixth embodiment. Figures 6A to 6D It is understood that both the imaging lens module 61 and the user interface 62 face the user. When taking a selfie or live streaming, the user can simultaneously view the captured image and operate the interface, and obtain an image after shooting. Figure 6D The images captured. Therefore, the imaging lens module 61, in conjunction with the content disclosed herein, can provide a better shooting experience.

[0242] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. An imaging lens assembly, characterized in that, Comprising: A two-color molded lens element, comprising: A transparent portion, sequentially comprising from the center to the periphery: An optically effective area through which an optical axis of the imaging lens group passes; and a transparent outer periphery area surrounding the optically effective area; A light absorbing portion surrounding the optically effective area and disposed on the object side of the transparent outer periphery area, and comprising: An object end face facing the object side of the light absorbing portion; and An outer inclined surface extending from the object end face toward the image side of the light absorbing portion and gradually moving away from the optical axis; and A step difference structure connecting a first outer diameter surface of the light absorbing portion and a second outer diameter surface of the transparent portion; Wherein, the distance from the object end face to the step difference structure is Ld, the diameter of the first outer diameter surface is ψD, the diameter of a minimum opening of the light absorbing portion is ψd, and the focal length of the imaging lens group is f, which satisfy the following conditions: 0.6 < Ld / ((ψD - ψd) / 2) < 2.5; and 1.15 < f / ψd < 2.

80.

2. The imaging lens assembly according to claim 1, characterized in that, The diameter of the first outer diameter surface is ψD, and the outer diameter of the object end face is ψo, which satisfy the following conditions: 0.40 < ψo / ψD < 0.

75.

3. The imaging lens assembly according to claim 1, characterized in that, The central thickness of the optically effective area is CT, and the distance from the image side center of the optically effective area to the object end face is FT, which satisfy the following conditions: 1.0 < FT / CT < 1.

2.

4. The imaging lens assembly according to claim 1, characterized in that, The central thickness of the optically effective area is CT, and the minimum thickness of the transparent outer periphery area is ETmin, which satisfy the following conditions: ETmin / CT < 0.

35.

5. The imaging lens assembly according to claim 4, characterized in that, The central thickness of the optically effective area is CT, and the minimum thickness of the transparent outer periphery area is ETmin, which satisfy the following conditions: ETmin / CT ≤ 0.

25.

6. The imaging lens assembly according to claim 1, characterized in that, The distance from the object end face to the step difference structure is Ld, which satisfy the following conditions: 0.5 mm < Ld < 2.0 mm.

7. The imaging lens assembly according to claim 1, characterized in that, The two-color molded lens element further comprises at least one notch structure extending from the light absorbing portion to the transparent outer periphery area.

8. An imaging lens module, characterized in that, Comprising: The imaging lens group as described in claim 1; and A plastic lens barrel loading the imaging lens group; Wherein, the minimum opening of the light absorbing portion of the two-color molded lens element of the imaging lens group comprises: A tip minimum opening forming an aperture of the imaging lens module; and Two tapered surfaces respectively tapering from the object side and the image side of the light absorbing portion toward the tip minimum opening.

9. The imaging lens module according to claim 8, characterized in that, The optically effective area comprises an object side surface and an image side surface, and one of the object side surface and the image side surface is an aspherical surface.

10. The imaging lens module according to claim 9, characterized in that, The outer diameter of the object side surface is ψY, and the diameter of the minimum opening of the light absorbing portion is ψd, which satisfy the following conditions: 0.7 < ψd / ψY ≤ 1.

11. The imaging lens module according to claim 9, characterized in that, The distance from the tip minimum opening along the direction parallel to the optical axis to the object side surface of the transparent portion is d1, and the distance from the tip minimum opening along the direction parallel to the optical axis to the image side surface of the transparent portion is d2, which satisfy the following conditions: 0 ≤ d1 / (d1 + d2) < 0.

8.

12. The imaging lens module according to claim 8, characterized in that, The light absorption part includes at least one extinction structure, and the at least one extinction structure is composed of a plurality of strip-shaped grooves, and the strip-shaped grooves are arranged in a circumferential direction and are arranged in at least one of the ways of surrounding with the optical axis of the imaging lens group as the center.

13. The imaging lens module according to claim 12, characterized in that, The at least one extinction structure is disposed on at least one of the two tapered surfaces.

14. The imaging lens module according to claim 8, characterized in that, The plastic lens barrel includes a top surface facing the object side of the imaging lens module, and the object end surface is located on the object side of the top surface. The distance from the object end surface to the top surface is Lo, which satisfies the following conditions: 0.3mm < Lo < 1.5mm.

15. The imaging lens module according to claim 8, characterized in that, The imaging lens group further includes an imaging lens element, and the imaging lens element is disposed on the image side of the two-color molded lens element. The two-color molded lens element includes an axial connection structure, and the axial connection structure is located in the transparent peripheral area and corresponds to the imaging lens element. The axial connection structure includes an annular plane and an inclined conical surface, and the annular plane and the inclined conical surface are used for axial connection with the imaging lens element.

16. An imaging lens module, characterized in that, Comprising: An imaging lens group, comprising: A two-color molded lens element, comprising: A transparent part, which sequentially includes from the center to the periphery: An optically effective area, and an optical axis of the imaging lens group passes through the optically effective area; and A transparent peripheral area surrounding the optically effective area; A light absorption part surrounding the optically effective area, disposed on the object side of the transparent peripheral area, and comprising: An object end surface facing the object side; and An outer inclined surface extending from the object end surface to the image side of the light absorption part and gradually away from the optical axis; and A plastic lens barrel for loading the imaging lens group, and comprising: A top surface facing the object side of the imaging lens module; Wherein, the object end surface is located on the object side of the top surface, the distance from the object end surface to the top surface is Lo, the focal length of the imaging lens group is f, and the diameter of a minimum opening of the light absorption part is ψd, which satisfies the following conditions: 0.3mm < Lo < 1.5mm; and 1.15 < f / ψd < 2.

80.

17. The imaging lens module according to claim 16, characterized in that, The minimum aperture of the plastic lens barrel is ψb, and the outer diameter of the object end surface is ψo, which satisfies the following conditions: 0.5 < ψo / ψb ≤ 0.

95.

18. The imaging lens module according to claim 16, characterized in that, The central thickness of the optically effective area is CT, and the distance from the image side center of the optically effective area to the object end surface is FT, which satisfies the following conditions: 1.0 < FT / CT < 1.

2.

19. The imaging lens module according to claim 16, characterized in that, The focal length of the imaging lens group is f, and the diameter of the minimum opening of the light absorption part is ψd, which satisfies the following conditions: 1.45 ≤ f / ψd ≤ 2.

50.

20. The imaging lens module according to claim 16, characterized in that, The imaging lens group further includes an imaging lens element, and the imaging lens element is disposed on the image side of the two-color molded lens element. The two-color molded lens element includes an axial connection structure, and the axial connection structure is located in the transparent peripheral area and corresponds to the imaging lens element. The axial connection structure includes an annular plane and an inclined conical surface, and the annular plane and the inclined conical surface are used for axial connection with the imaging lens element.

21. The imaging lens module according to claim 16, characterized in that, The central thickness of the optically effective area is CT, and the minimum thickness of the transparent peripheral area is ETmin, which satisfies the following conditions: ETmin / CT < 0.

35.

22. The imaging lens module according to claim 21, characterized in that, The central thickness of the optically effective area is CT, and the minimum thickness of the transparent peripheral area is ETmin, which satisfies the following conditions: ETmin / CT≤0.25.

Images