Variable light through hole module, imaging lens module, camera module and electronic device

Abstract

The invention discloses an imaging lens module which comprises an imaging lens, a variable light through hole module, a first spacer and a second spacer. The variable light through hole module is arranged between an object side lens group and an image side lens group of the imaging lens and comprises a light shielding sheet group, a plurality of fixed shafts, a movable piece and a driving mechanism. At least two anti-dazzling screens of the anti-dazzling screen group are stacked around the optical axis and form a light through hole. And the fixed shaft and the movable piece are respectively arranged corresponding to the anti-dazzling screen group. The driving mechanism is used for driving the movable piece to rotate in the circumferential direction, so that the anti-dazzling screen set can move relative to the fixed shaft, and the aperture size of the light through hole is adjusted. The fixing shaft is arranged on the first distance piece. The second spacer and the first spacer are correspondingly arranged and are coupled with each other to form an internal space for accommodating the variable light through hole module. The second spacer carries the object-side lens group and is in physical contact therewith. The invention further discloses a camera module with the imaging lens module and an electronic device with the camera module.

Description

Technical Field

[0001] The present disclosure relates to a variable aperture module, an imaging lens module, a camera module and an electronic device, and in particular to a variable aperture module, an imaging lens module and a camera module suitable for an electronic device. Background Art

[0002] As semiconductor process technology becomes more sophisticated, the performance of electronic photosensitive elements has been improved, and pixels can reach a smaller size. Therefore, optical lenses with high imaging quality have become an indispensable part. In addition, with the rapid development of technology, the application range of mobile devices equipped with optical lenses has become wider, and the requirements for optical lenses have also become more diverse.

[0003] In recent years, micro camera modules have been applied to more fields, such as portable devices such as smart phones and sports cameras, as well as head-mounted devices such as augmented reality (AR), virtual reality (VR), or drones. In addition, the hardware of micro camera modules is constantly updated, such as using larger photosensitive elements and using imaging lenses with better image quality. The larger photosensitive elements can bring better imaging quality to users, but will make the background blurred. An existing variable aperture module can be used to adjust the degree of background blur and control the amount of light entering the imaging lens. However, due to the limitation of volume, it is not easy for the camera module to realize the functionality of the variable aperture module. Specifically, the existing variable aperture module design will have some problems when applied to the micro camera module, such as the shading blades are easily damaged due to the reduction in size, the weight is too heavy, the requirements for accuracy (such as the dimensional accuracy of the aperture aperture and the accuracy of the aperture position) cannot be met, and the module miniaturization cannot be taken into account. Summary of the invention

[0004] In view of the above-mentioned problems, the present disclosure discloses a variable aperture module, an imaging lens module, a camera module and an electronic device, which are helpful to simplify the structure of the optical lens, reduce the volume and maintain good imaging quality at the same time.

[0005] The present disclosure provides an imaging lens module, which includes an imaging lens, a variable light aperture module, a first spacer and a second spacer. The imaging lens includes an object side lens group and an image side lens group, and an optical axis of the imaging lens passes through the object side lens group and the image side lens group. The variable light aperture module is arranged between the object side lens group and the image side lens group, and the variable light aperture module includes a light shielding plate group, multiple fixed shafts, a movable member and a driving mechanism. The light shielding plate group includes at least two light shielding plates, which are stacked on each other along a circumferential direction around the optical axis and jointly form a light through hole, and the optical axis of the imaging lens passes through the light through hole. The fixed shaft is arranged corresponding to the light shielding plate group, and the movable member is arranged corresponding to the light shielding plate group. The driving mechanism is used to drive the movable member to rotate along the circumferential direction so that the light shielding plate group can move relative to the fixed shaft to adjust the aperture size of the light through hole. The fixed shaft is arranged on the first spacer. The second spacer is arranged corresponding to the first spacer. The first spacer and the second spacer are coupled to each other and form an internal space together, and the internal space accommodates the variable aperture module. Preferably, the second spacer carries the object side lens group and is in physical contact with the object side lens group.

[0006] The present disclosure further provides an imaging lens module, which includes an imaging lens, a variable light aperture module, a first spacer and a second spacer. The imaging lens includes an object side lens group and an image side lens group, and an optical axis of the imaging lens passes through the object side lens group and the image side lens group. The variable light aperture module is disposed between the object side lens group and the image side lens group, and the variable light aperture module includes a light shielding plate group, a plurality of fixed shafts, a movable member and a driving mechanism. The light shielding plate group includes at least two light shielding plates, which are stacked on each other along a circumferential direction surrounding the optical axis and jointly form a light through hole, and the optical axis of the imaging lens passes through the light through hole. The fixed shaft is disposed correspondingly to the light shielding plate group, and the movable member is disposed correspondingly to the light shielding plate group. The driving mechanism is used to drive the movable member to rotate along the circumferential direction so that the light shielding plate group can move relative to the fixed shaft to adjust the aperture size of the light through hole. The fixed shaft is disposed on the first spacer. The second spacer is disposed correspondingly to the first spacer. The first spacer and the second spacer are coupled to each other and form an internal space together, and the internal space accommodates the variable aperture module. Preferably, the first spacer carries the image side lens group and is in physical contact with the image side lens group.

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

[0008] The present disclosure provides an electronic device, which includes the aforementioned camera module.

[0009] According to the variable aperture module, imaging lens module, camera module and electronic device disclosed in the present disclosure, by configuring the variable aperture module in the imaging lens module, the aperture size of the aperture can be adjusted to correspond to shooting environments with different light intake requirements to improve the imaging quality. In addition, by configuring the above-mentioned spacer, fixed axis, lens group and variable aperture module, the space utilization rate of the imaging lens module can be improved, the module can be miniaturized, and the lens group can be aligned with the optical axis to ensure the assembly quality.

[0010] The above description of the contents of the present disclosure and the following description of the embodiments are used to demonstrate and explain the spirit and principle of the present disclosure, and to provide further explanation of the claims of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0012] Figure 2 Draw Figure 1 A partially exploded schematic diagram of an imaging lens module.

[0013] Figure 3 Draw Figure 2 Schematic diagram of further decomposition of the imaging lens module.

[0014] Figure 4 Draw Figure 3 Schematic diagram of a partial explosion of the imaging lens module.

[0015] Figure 5 Draw Figure 3 Another partial exploded schematic diagram of the imaging lens module.

[0016] Figure 6 Draw Figure 1 Another exploded schematic diagram of the imaging lens module.

[0017] Figure 7 Draw Figure 3 A bottom-up schematic diagram of movable parts and magnets in an imaging lens module.

[0018] Figure 8 Draw Figure 1 A cross-sectional schematic diagram of an imaging lens module and a partial enlarged schematic diagram thereof.

[0019] Fig. 9 Draw Figure 1 Schematic diagram of a top view of an imaging lens module.

[0020] Fig.10 Draw Fig. 9 A schematic cross-sectional view of the imaging lens module along the 10-10 cross-sectional line.

[0021] Fig.11 Draw Fig. 9 A schematic cross-sectional view of an imaging lens module with a filter element and an electronic photosensitive element along the 10-10 section line.

[0022] Fig.12 A schematic top view of some components of the variable aperture module of the imaging lens module according to the first embodiment of the present disclosure when the variable aperture module is in a maximum aperture state is shown.

[0023] Fig.13 Draw Fig.11 Schematic diagram of the light-clearing hole in the imaging lens module being in the maximum aperture state.

[0024] Fig.14 A schematic top view of some components of the variable aperture module of the imaging lens module according to the first embodiment of the present disclosure when the variable aperture module is in a minimum aperture state is shown.

[0025] Fig.15 Draw Fig.11 Schematic diagram of the light-clearance hole in the imaging lens module being in the minimum aperture state.

[0026] Fig.16 Draw Fig. 9 A schematic cross-sectional view of the imaging lens module along the cross-sectional line 16-16.

[0027] Fig.17 Draw Fig. 9 A schematic cross-sectional view of an imaging lens module with a filter element and an electronic photosensitive element along the 16-16 section line.

[0028] Fig.18 A cross-sectional schematic diagram and a partial enlarged schematic diagram of an imaging lens module in accordance with another embodiment of the present disclosure, which is equipped with a filter element and an electronic photosensitive element, are shown.

[0029] Fig.19 A cross-sectional schematic diagram of an imaging lens module in accordance with another embodiment of the present disclosure, coupled with a filter element and an electronic photosensitive element, is shown.

[0030] Fig. 20 A three-dimensional schematic diagram of an electronic device according to a second embodiment of the present disclosure is shown.

[0031] Fig.21 Draw Fig. 20 A three-dimensional schematic diagram of the other side of the electronic device.

[0032] Fig. 22 Draw Fig. 20 A system block diagram of an electronic device.

[0033] Fig.23 Draw Fig. 20Schematic diagram of an image captured by an electronic device using a wide-viewing angle miniature camera module.

[0034] Fig.24 Draw Fig. 20 Schematic diagram of an image captured by an electronic device using a camera module including a variable aperture module in a state where the aperture value is 1.4.

[0035] Fig.25 Draw Fig. 20 Schematic diagram of an image captured by an electronic device using a camera module including a variable aperture module at an aperture value of 5.6.

[0036]

Explanation of symbols

[0037] 1,1b,1c: Imaging lens module

[0038] 2,2b: Imaging lens

[0039] 21,21b,21c: Object side lens group

[0040] 22: Image side lens group

[0041] 210,211,211b,220,221: Lens

[0042] 2111: Object side surface

[0043] 2212,2112b: Image side surface

[0044] 23: Filter element

[0045] 24b: Infrared light cut-off coating

[0046] 3: Retaining ring element

[0047] 4: First spacer

[0048] 40: Notch structure

[0049] 5,5c: Second spacer

[0050] 50: Raised structure

[0051] 6: Variable aperture module

[0052] 60: shading film set

[0053] 600: Shading film

[0054] G1: Long groove

[0055] 61: Fixed shaft

[0056] 62: Movable parts

[0057] 620: Connecting protrusion

[0058] 63:Fixed hole element

[0059] 630: Center opening

[0060] 64: Rolling parts

[0061] 65: Printed Circuit Board

[0062] 66: Driving mechanism

[0063] 661: Coil

[0064] 662:Magnet

[0065] 9c: O-ring

[0066] IS: Electronic photosensitive element

[0067] OA: Optical Axis

[0068] D1: Circumferential direction

[0069] LPH: Light hole

[0070] PT: Channel

[0071] 7: Electronic devices

[0072] 70a, 70b, 70c, 70d, 70e: Camera module

[0073] 72: Flash module

[0074] 73: Focus assist module

[0075] 74: Single chip system

[0076] 75: Display device

[0077] 751: Zoom control key

[0078] 752: Focus and photo taking button

[0079] 753: Video playback button

[0080] 754: Camera module switch button

[0081] 755: Integrated menu button

[0082] 77:Biometric Sensor

[0083] 78: Circuit Board

[0084] 781: Connector

[0085] 79: Electronic components

[0086] 82: Tip light

[0087] OBJ: Object

[0088] Lm: The length of each magnet along the circumferential direction

[0089] Dm: Maximum outer diameter of movable part

[0090] T: The distance between the object side lens group and the image side lens group SD: The distance between the light aperture and the image side surface of the most image side lens in the image side lens group along the direction parallel to the optical axis

[0091] TD: The distance between the object side surface of the most object side lens and the image side surface of the most image side lens in the object side lens group along the direction parallel to the optical axis DETAILED DESCRIPTION

[0092] The detailed features and advantages of the present disclosure are described in detail in the following embodiments, and the contents are sufficient to enable any person skilled in the relevant art to understand the technical content of the present disclosure and implement it accordingly. According to the contents disclosed in this specification, the claims and the drawings, any person skilled in the art can easily understand the relevant purposes and advantages of the present disclosure. The following examples further illustrate the concept of the present disclosure in detail, but do not limit the scope of the present disclosure in any way.

[0093] The present disclosure provides an imaging lens module, which includes an imaging lens, a variable aperture module, a first spacer and a second spacer. The imaging lens includes an object side lens group and an image side lens group, and an optical axis of the imaging lens passes through the object side lens group and the image side lens group.

[0094] The variable light-through hole module is arranged between the object side lens group and the image side lens group, and the variable light-through hole module includes a shading plate group, a plurality of fixed shafts, a movable part and a driving mechanism. The shading plate group includes at least two shading plates, which are stacked on each other along a circumferential direction around the optical axis and together form a light-through hole with an adjustable aperture size, and the optical axis of the imaging lens passes through the light-through hole. The fixed shaft is arranged corresponding to the shading plate group, and the movable part is arranged corresponding to the shading plate group. The driving mechanism is used to drive the movable part to rotate along the circumferential direction so that the shading plate group can be moved relative to the fixed shaft to adjust the aperture size of the light-through hole. The object side lens group may be, for example, one or more lenses located on the object side of the variable light-through hole module, and the image side lens group may be, for example, one or more lenses located on the image side of the variable light-through hole module. In addition, the present disclosure is not limited to the number of lenses in a single lens group.

[0095] The fixed axis is disposed on the first spacer, and the second spacer is correspondingly disposed with the first spacer. Wherein, the first spacer and the second spacer are coupled to each other and jointly form an inner space, and the inner space accommodates the variable aperture module. Wherein, the first spacer can be disposed on the image side of the variable aperture module, and the optical axis can pass through the center of the first spacer, but the present disclosure is not limited thereto. Wherein, the second spacer can be disposed on the object side of the variable aperture module, and the optical axis passes through the center of the second spacer, but the present disclosure is not limited thereto. Wherein, the first spacer and the second spacer can be made of plastic, metal, or a mixture of plastic and metal respectively, but the present disclosure is not limited thereto.

[0096] In one embodiment, the second spacer can carry the object-side lens group and be in physical contact with the object-side lens group. Thereby, the object-side lens group can be aligned with the optical axis to ensure the assembly quality.

[0097] In another embodiment, the first spacer can carry the image-side lens group and be in physical contact with the image-side lens group. Thereby, the image-side lens group can be aligned with the optical axis to ensure the assembly quality.

[0098] The imaging lens module disclosed in the present disclosure can adjust the aperture size of the aperture corresponding to the shooting environment with different light input requirements by configuring the variable aperture module in the imaging lens module, so as to improve the imaging quality. In addition, through the configuration among the above-mentioned spacer, fixed axis, lens group, and variable aperture module, the space utilization rate of the imaging lens module can be improved, and the module miniaturization can be achieved.

[0099] The lens group distance between the object-side lens group and the image-side lens group is T, and the area difference between the maximum aperture and the minimum aperture of the aperture is ΔA, which can satisfy the following condition: 0.1 < T / √ΔA < 0.9. Thereby, the variable aperture module has a better shading effect ratio range. Please refer to Fig.11 , which shows a schematic diagram of the lens group distance T between the object-side lens group 21 and the image-side lens group 22 according to the first embodiment of the present disclosure. Please also refer to Fig.12 and Fig.14 , which respectively show partial element top views of the variable aperture module of the imaging lens module according to the first embodiment of the present disclosure in the maximum aperture state and the minimum aperture state. Among them, the maximum aperture area of the aperture LPH is A1 (corresponding to Fig.12 ), the minimum aperture area of the aperture LPH is A2 (corresponding to Fig.14 ), and the area difference ΔA between the maximum aperture and the minimum aperture of the aperture LPH is ΔA = A1 - A2.

[0100] The maximum viewing angle of the imaging lens module is FOV, which can meet the following conditions: 85 degrees < FOV < 210 degrees. Thereby, it can meet the shooting requirements of the ultra-wide-angle imaging lens. Among them, the maximum viewing angle (FOV) of the imaging lens module can be, for example, 157.9 degrees, 179.3 degrees, 198 degrees, etc., and the present disclosure is not limited thereto.

[0101] The variable aperture module may further include at least one rolling element, a fixed hole element, and a printed circuit board (PCB). Among them, the rolling element can be disposed between the first spacer and the movable member, and when the driving mechanism drives the movable member to rotate in the circumferential direction, the rolling element provides the movable member with a rotational freedom relative to the first spacer. The fixed hole element is disposed between the object-side lens group and the image-side lens group, and the fixed hole element is adjacent to the light-shielding sheet group to define a fixed aperture value. And the printed circuit board is correspondingly disposed with the driving mechanism and electrically connected to the driving mechanism. Thereby, taking into account the driving efficiency and the optical performance, it is a better configuration. Among them, the printed circuit board can also be a flexible printed circuit (FPC), but the present disclosure is not limited thereto.

[0102] The fixed hole element may include a central opening, and the optical axis of the imaging lens passes through the central opening. Among them, there may be no other optical lenses between the central opening of the fixed hole element and the light-passing hole formed by the light-shielding sheet group.

[0103] The first spacer may include a notch structure, and the notch structure can allow the printed circuit board to pass through, so that the printed circuit board can be electrically connected to an external device (circuit).

[0104] The second spacer may include a protrusion structure, and the protrusion structure is disposed opposite to the notch structure of the first spacer. Among them, the notch structure and the protrusion structure are disposed opposite to each other and form a channel therebetween, and the channel can allow the printed circuit board to pass through. Thereby, by disposing the notch structure and the protrusion structure opposite to each other to form a channel for the flat printed circuit board to pass through the channel, the design complexity of the printed circuit board can be reduced. Please refer to Figure 8 , which shows a schematic diagram of the channel PT formed between the notch structure 40 and the protrusion structure 50 according to the first embodiment of the present disclosure.

[0105] The driving mechanism may include at least one coil and at least one magnet. Among them, the coil is disposed on the printed circuit board, and the magnet is disposed on the movable member. Thereby, it is a configuration with better driving efficiency of the driving mechanism.

[0106] The rolling elements and magnets can be arranged circumferentially, and the magnets are adjacent to the rolling elements on both the clockwise and counterclockwise sides. Thereby, the movable member rotates more stably and balanced relative to the first spacer.

[0107] The length of each magnet in the circumferential direction is Lm, and the maximum outer diameter of the movable member is Dm, which can satisfy the following condition: 0.1 < Lm / Dm < 0.8. Thereby, compared with the conventional two-stage variable aperture, the stepless continuous variable aperture can perform multi-stage fine adjustment on the light input amount of the lens to improve the optical design margin. Among them, in some embodiments, using elongated magnets is beneficial to achieve the function of stepless continuous variable aperture. Please refer to Figure 7 , which shows a schematic diagram of the length Lm of one of the magnets 662 in the circumferential direction D1 and the maximum outer diameter Dm of the movable member 62 according to the first embodiment of the present disclosure.

[0108] The distance along the optical axis direction between the light passing hole and the image side surface of one of the most image side lenses in the image side lens group is SD, and the distance along the optical axis direction between the object side surface of one of the most object side lenses in the object side lens group and the image side surface of the most image side lens is TD, which can satisfy the following condition: 0 < SD / TD < 0.9. Thereby, the variable light passing hole module has a better shading effect ratio range. Please refer to Fig.11 , which shows a schematic diagram of the parameters SD and TD according to the first embodiment of the present disclosure.

[0109] The imaging lens may further include an infrared cut coating, and the infrared cut coating is disposed on a surface of one of the lenses in the object side lens group. Thereby, the infrared cut coating can filter out excess infrared light and make the imaging picture clear. One surface of the lens may be one of the object side surface and the image side surface of the lens.

[0110] One of the lenses in the image side lens group can be made of an infrared cut material. Thereby, the infrared cut material can filter out excess infrared light and make the imaging picture clear.

[0111] The imaging lens module disclosed in the present disclosure may further include a retainer and an O-ring. The retainer is disposed on the object side of the imaging lens, and the retainer is in physical contact with the most object-side lens in the object-side lens group. In addition, the O-ring may be disposed between the retainer and the second spacer or between the object-side lens group and the second spacer, so that the configuration of the O-ring can prevent external moisture and dust from entering the imaging lens. In this way, the environmental adaptability and durability of the imaging lens module are improved.

[0112] The present disclosure provides a camera module, which includes the aforementioned imaging lens module and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the imaging lens module.

[0113] The present disclosure provides an electronic device, which includes the aforementioned camera module.

[0114] The various technical features of the imaging lens module disclosed above can be configured in combination to achieve corresponding effects.

[0115] According to the above implementation modes, specific embodiments are proposed below and described in detail with reference to the accompanying drawings.

[0116] <First Embodiment>

[0117] Please refer to Figures 1 to 17 ,in Figure 1 A three-dimensional schematic diagram of an imaging lens module according to a first embodiment of the present disclosure is shown. Figure 2 Draw Figure 1 A partially exploded schematic diagram of the imaging lens module. Figure 3 Draw Figure 2 A further decomposition diagram of the imaging lens module, Figure 4 Draw Figure 3 A partial exploded schematic diagram of the imaging lens module. Figure 5 Draw Figure 3 Another partial exploded schematic diagram of the imaging lens module, Figure 6 Draw Figure 1 Another exploded schematic diagram of the imaging lens module, Figure 7 Draw Figure 3 A bottom view of the movable parts and magnets in the imaging lens module. Figure 8 Draw Figure 1 A cross-sectional schematic diagram of an imaging lens module and a partial enlarged schematic diagram thereof, Fig. 9 Draw Figure 1 A top view schematic diagram of an imaging lens module, Fig.10 Draw Fig. 9 A schematic cross-sectional view of the imaging lens module along the 10-10 cross-sectional line, Fig.11 Draw Fig. 9A schematic cross-sectional view of the imaging lens module with filter elements and electronic photosensitive elements along the 10-10 section line. Fig.12 A schematic top view of some components of the variable aperture module of the imaging lens module according to the first embodiment of the present disclosure when the variable aperture module is in a maximum aperture state is shown. Fig.13 Draw Fig.11 Schematic diagram of the light hole in the imaging lens module when it is in the maximum aperture state. Fig.14 A schematic top view of some components of the variable aperture module of the imaging lens module according to the first embodiment of the present disclosure when the variable aperture module is in the minimum aperture state is shown. Fig.15 Draw Fig.11 Schematic diagram of the light hole in the imaging lens module when it is in the minimum aperture state. Fig.16 Draw Fig. 9 A schematic cross-sectional view of the imaging lens module along the cross-sectional line 16-16, and Fig.17 Draw Fig. 9 A schematic cross-sectional view of an imaging lens module with a filter element and an electronic photosensitive element along the 16-16 section line.

[0118] The imaging lens module 1 includes an imaging lens 2 , a fixing ring element 3 , a first spacer 4 , a second spacer 5 and a variable aperture module 6 .

[0119] The imaging lens 2 includes an object side lens group 21, an image side lens group 22 and a filter element 23. The object side lens group 21 is located on the object side of the image side lens group 22, and the filter element 23 is located between the image side lens group 22 and an electronic photosensitive element IS. In addition, an optical axis OA of the imaging lens 2 passes through the object side lens group 21, the image side lens group 22 and the filter element 23, so that the object side lens group 21, the image side lens group 22 and the filter element 23 are arranged in sequence from the object side to the image side along the optical axis OA. Figure 4 and Figure 5 As shown, the object side lens group 21 includes a plurality of lenses 210 and 211, and the image side lens group 22 includes a plurality of lenses 220 and 221. The filter element 23 may be, for example, blue glass.

[0120] The fixing ring element 3 is disposed on the object side of the imaging lens 2 , and the fixing ring element 3 is in physical contact with the most object side lens 211 in the object side lens group 21 .

[0121] The first spacer 4 and the second spacer 5 are correspondingly arranged, and the first spacer 4 and the second spacer 5 are coupled to each other and form an internal space together to accommodate the variable aperture module 6. The first spacer 4 carries the image side lens group 22 and is in physical contact with the image side lens group 22, and the second spacer 5 carries the object side lens group 21 and is in physical contact with the object side lens group 21.

[0122] The variable aperture module 6 is disposed between the object side lens group 21 and the image side lens group 22, and the variable aperture module 6 is accommodated in the internal space formed by the first spacer 4 and the second spacer 5. The first spacer 4 is located on the image side of the variable aperture module 6, the second spacer 5 is located on the object side of the variable aperture module 6, and the optical axis OA passes through the center of the first spacer 4 and the center of the second spacer 5.

[0123] The variable aperture module 6 includes a light shielding sheet set 60 , six fixed shafts 61 , a movable member 62 , a fixed aperture element 63 , four rolling members 64 , a printed circuit board 65 and a driving mechanism 66 .

[0124] The light shielding sheet set 60 includes six light shielding sheets 600 , and the light shielding sheets 600 are stacked on each other along a circumferential direction D1 surrounding the optical axis OA and together form a light through hole LPH with an adjustable aperture size, wherein the optical axis OA passes through the light through hole LPH.

[0125] The fixed shaft 61 is disposed on the first spacer 4 and is disposed corresponding to the shading sheet set 60. Specifically, the shading sheets 600 of the shading sheet set 60 are rotatably disposed on the fixed shaft 61, so that the shading sheets 600 of the shading sheet set 60 can pivot relative to the fixed shaft 61.

[0126] The movable member 62 is disposed corresponding to the light shielding sheet group 60. Specifically, the movable member 62 has six connecting protrusions 620, which are slidably disposed in the six long grooves G1 of the light shielding sheet 600, respectively, so that when the driving mechanism 66 drives the movable member 62 to rotate along the circumferential direction D1, the movable member 62 drives the light shielding sheet 600 of the light shielding sheet group 60 to pivot relative to the fixed shaft 61 to adjust the aperture size of the light passing hole LPH.

[0127] The fixed aperture element 63 is disposed between the object side lens group 21 and the image side lens group 22, and the fixed aperture element 63 is disposed adjacent to the light shielding plate group 60. In addition, the fixed aperture element 63 includes a central opening 630, and the optical axis OA passes through the central opening 630. There is no other optical lens between the central opening 630 of the fixed aperture element 63 and the light through hole LPH formed by the light shielding plate group 60.

[0128] The rolling member 64 is disposed between the first spacer 4 and the movable member 62 , so that when the driving mechanism 66 drives the movable member 62 to rotate along the circumferential direction D1 , the rolling member 64 provides the movable member 62 with a degree of rotational freedom relative to the first spacer 4 .

[0129] The printed circuit board 65 is attached to the first spacer 4. The printed circuit board 65 is correspondingly arranged with the driving mechanism 66 and is electrically connected to the driving mechanism 66. The driving mechanism 66 is used to drive the movable part 62 to rotate along the circumferential direction D1. Specifically, the driving mechanism 66 includes two coils 661 and two magnets 662, wherein the coils 661 are arranged on the printed circuit board 65, and the magnets 662 are arranged on the movable part 62. Through the driving magnetic force generated between the coils 661 and the magnets 662 of the driving mechanism 66, the driving mechanism 66 can move the light shielding plate group 60 relative to the fixed shaft 61 to adjust the aperture size of the light-transmitting hole LPH. Fig.12 and Fig.13 As shown in FIG. 1 , when the variable light aperture module 6 is in the maximum aperture state, the light aperture LPH has the maximum aperture. Fig.14 and Fig.15 As shown in FIG. 1 , when the variable light aperture module 6 is in the minimum aperture state, the light aperture LPH has the minimum aperture. Fig.12 and Fig.14 In order to clearly illustrate the state of the light passage hole LPH, only some components of the imaging lens module 1 are illustrated, and some components disposed on the object side of the variable light passage hole module 6 are omitted.

[0130] like Figure 6 and Figure 7 As shown, in this embodiment, the rolling element 64 and the magnet 662 are arranged along the circumferential direction D1, and the magnet 662 is adjacent to the rolling element 64 on both sides in the clockwise direction and the counterclockwise direction.

[0131] like Figures 3 to 6 and Figure 8 As shown, the first spacer 4 includes two notch structures 40, and the second spacer 5 includes two protrusion structures 50, and the protrusion structures 50 are respectively arranged opposite to the notch structures 40. A passage PT is formed between the corresponding notch structures 40 and protrusion structures 50 for the printed circuit board 65 to pass through.

[0132] like Fig.12 and Fig.14 As shown, when the variable light hole module 6 is in the maximum aperture state, the maximum aperture area of ​​the light hole LPH is A1; when the variable light hole module 6 is in the minimum aperture state, the minimum aperture area of ​​the light hole LPH is A2; the area difference between the maximum aperture and the minimum aperture of the light hole LPH is ΔA, which satisfies the following conditions: A1 = 7.50 mm 2 ; A2 = 0.39 mm 2 ; and ΔA = A1-A2 = 7.11 mm 2 .

[0133] like Fig.11 Please refer to the following Fig.12 and Fig.14 The lens group distance between the object-side lens group 21 and the image-side lens group 22 is T, and the area difference between the maximum aperture and the minimum aperture of the light passing hole LPH is ΔA, which satisfies the following conditions: T = 1.79 mm; And

[0134] The maximum viewing angle of the imaging lens module 1 is FOV, which satisfies the following conditions: 85 degrees < FOV < 210 degrees.

[0135] As Figure 7 shown, the length of each magnet 662 along the circumferential direction D1 is Lm, and the maximum outer diameter of the movable member 62 is Dm, which satisfies the following conditions: Lm = 3.2 mm; Dm = 11.84 mm; and Lm / Dm = 0.27.

[0136] As Fig.11 shown, the distance along the parallel optical axis OA between the light passing hole LPH and the image-side surface 2212 of the most image-side lens 221 in the image-side lens group 22 is SD, and the distance along the parallel optical axis OA between the object-side surface 2111 of the most object-side lens 211 in the object-side lens group 21 and the image-side surface 2212 of the most image-side lens 221 in the image-side lens group 22 is TD, which satisfies the following conditions: SD = 5.73 mm; TD = 9.84 mm; and SD / TD = 0.58.

[0137] It should be noted that the present disclosure is not limited to the number of the foregoing fixed shafts 61, rolling members 64, and light-shielding sheets 600. In other embodiments, the number of fixed shafts may be, for example, more or less than six and correspond to the number of light-shielding sheets, and the number of rolling members may also be, for example, more or less than four.

[0138] The present disclosure is not limited to the configuration of the foregoing imaging lens module 1. For example, please refer to Fig.18 , which is a cross-sectional schematic diagram of an imaging lens module combined with a filter element and an electronic photosensitive element according to another embodiment of the present disclosure and a partial enlarged schematic diagram thereof. In another embodiment of the present disclosure, the imaging lens module 1b is similar to the foregoing imaging lens module 1, and the same or similar reference numerals are used to denote the same elements. The functions and effects of each element are the same as those of the foregoing, and will not be described herein again. The imaging lens 2b of the imaging lens module 1b further includes an infrared cut-off coating 24b, and the infrared cut-off coating 24b is disposed on the image-side surface 2112b of the most object-side lens 211b of the object-side lens group 21b.

[0139] For another example, please refer to Fig.19, which illustrates a cross-sectional schematic diagram of an imaging lens module in accordance with another embodiment of the present disclosure, with a filter element and an electronic photosensitive element. In another embodiment of the present disclosure, the imaging lens module 1c is similar to the aforementioned imaging lens module 1, and the same or similar reference numerals are used to represent the same elements. The functions and effects of each element are the same as those described above, and are not described in detail here. The imaging lens module 1c further includes an O-ring 9c, and the O-ring 9c is disposed between the object-side lens group 21c and the second spacer 5c.

[0140] <Second Embodiment>

[0141] Please refer to Figure 20 to Figure 22 ,in Fig. 20 A three-dimensional schematic diagram of an electronic device according to a second embodiment of the present disclosure is shown. Fig.21 Draw Fig. 20 A three-dimensional schematic diagram of the other side of the electronic device, and Fig. 22 Draw Fig. 20 A system block diagram of an electronic device.

[0142] In the present embodiment, the electronic device 7 is a mobile device, wherein the mobile device may be a computer, a smart phone, a smart wearable device, an aerial camera, or a vehicle-used image recording and display instrument, etc., and the present disclosure is not limited thereto. The electronic device 7 includes a camera module 70a, a camera module 70b, a camera module 70c, a camera module 70d, a camera module 70e, a flash module 72, a focus assist module 73, an image signal processor (Image Signal Processor), a display device 75, an image software processor, and a biometric sensor 77. Among them, the camera module 70a, for example, includes the imaging lens module 1 and the electronic photosensitive element of the first embodiment, and the electronic photosensitive element is disposed on the imaging surface of the imaging lens module 1. The camera module 70b is a wide-angle camera module, the camera module 70c is a macro camera module, and the camera module 70e is a time of flight (ToF) camera module. In other embodiments, the camera module 70a may, for example, include the imaging lens module of other embodiments of the present disclosure, and the present disclosure is not limited thereto. In addition, the camera module 70b, the camera module 70c, the camera module 70d, and the camera module 70e may also include, for example, the imaging lens modules of other embodiments of the present disclosure described above.

[0143] The camera modules 70a, 70b and 70c are all disposed on the same side of the electronic device 7. The camera modules 70d, 70e and the display device 75 are all disposed on the other side of the electronic device 7, and the display device 75 can be a user interface, so that the camera modules 70d and 70e can be used as front lenses to provide a selfie function, but the present disclosure is not limited thereto.

[0144] The camera modules 70a, 70b and 70c of this embodiment have different viewing angles, so that the electronic device 7 can provide different magnifications to achieve an optical zoom shooting effect. For example, the camera module 70b has a wider maximum viewing angle, and the image it captures can refer to Fig.23 , which shows a schematic diagram of an image captured by the electronic device 7 using a wide-viewing angle camera module, wherein the captured image includes the entire church, surrounding buildings and people on the square. Fig.23 The image has a larger viewing angle and depth of field, but is often accompanied by greater distortion. The image captured by the camera module 70a at a smaller aperture value can be referred to Fig.24 , and the images captured at larger aperture values ​​can be referred to Fig.25 . Fig.24 A schematic diagram of an image captured by the electronic device 7 using a camera module including a variable aperture module at an aperture value of 1.4 is shown, and Fig.25 FIG. 1 shows a schematic diagram of an image captured by the electronic device 7 using a camera module including a variable aperture module at an aperture value of 5.6, wherein the captured image includes a flock of birds flying in front of the church. Fig.24 As shown in FIG. 1 , when the variable aperture module of the camera module 70a provides a larger aperture, the electronic photosensitive element receives more light, but the background is more blurred. Fig.25 As shown, when the variable aperture module of the camera module 70a provides a smaller aperture, the electronic photosensitive element obtains less light but can obtain a clearer background. Fig.24 and Fig.25 The image has a smaller viewing angle and depth of field, so that the camera module 70a can be used to shoot moving targets. The lens driver drives the lens group to quickly and continuously automatically focus on the target, so that the target object will not be blurred due to being far away from the focus position; when taking an image, the camera module 70a can further perform optical zoom on the shooting subject to obtain a clearer image. In addition, the camera module 70e can obtain the depth information of the image. The above-mentioned electronic device 7 is taken as an example of including multiple camera modules, but the number and configuration of the camera modules are not used to limit the present disclosure.

[0145] When the user takes a picture of the object OBJ, the electronic device 7 uses the camera module 70a, the camera module 70b or the camera module 70c to focus and take an image, activates the flash module 72 for fill light, and uses the object distance information of the object OBJ provided by the focus auxiliary module 73 for fast focusing, and the image signal processor performs image optimization processing to further improve the image quality produced by the lens group. The focus auxiliary module 73 can use an infrared or laser focus auxiliary system to achieve fast focusing.

[0146] In addition, the electronic device 7 can also use the camera module 70d or the camera module 70e to shoot. When the camera module 70d or the camera module 70e is shooting, a prompt light 82 can be illuminated to remind the user that the electronic device 7 is shooting. The display device 75 can use a touch screen or a physical shooting button of a zoom control key 751 and a focus and shooting button 752, and cooperate with the diverse functions of the image software processor to perform image shooting and image processing. The image processed by the image software processor can be displayed on the display device 75. The user can also replay the previously shot image through the image playback button 753 of the display device 75, and can also select a suitable camera module to shoot through the camera module switching button 754, and can also adjust the appropriate shooting conditions for the current shooting scene through the integrated menu button 755.

[0147] Furthermore, the electronic device 7 further includes a circuit board 78, and the circuit board 78 carries a plurality of electronic components 79. The camera module 70a, the camera module 70b, the camera module 70c, the camera module 70d, and the camera module 70e are electrically connected to the electronic component 79 via a connector 781 on the circuit board 78, wherein the electronic component 79 may include a signal transmitting module, and the image may be transmitted to other electronic devices or cloud storage via the signal transmitting module. The signal transmitting module may be a wireless network technology (Wireless Fidelity, WiFi) module, a Bluetooth module, an infrared module, a network service module, or an integrated module of the above-mentioned multiple signal transmissions, and the present disclosure is not limited thereto.

[0148] The electronic component 79 may also include a storage unit, a random access memory to store image signals, a gyroscope, and a position locator to facilitate navigation or positioning of the electronic device 7. In this embodiment, the image signal processor, the image software processor, and the random access memory are integrated into a single chip system 74, but the present disclosure is not limited to this configuration. In some other embodiments, the electronic component may also be integrated into a camera module or may also be disposed on one of a plurality of circuit boards. In addition, the biometric sensor 77 may provide functions such as powering on and unlocking the electronic device 7.

[0149] The variable aperture module, imaging lens module and camera module disclosed in the present invention are not limited to application in smart phones. The variable aperture module, imaging lens module and camera module can be applied to mobile focus systems according to needs, and have the characteristics of excellent aberration correction and good imaging quality. For example, the variable aperture module, imaging lens module and camera module can be widely used in electronic devices such as three-dimensional (3D) image capture, digital cameras, mobile devices, tablet computers, smart TVs, network monitoring equipment, driving recorders, reversing imaging devices, multi-lens devices, identification systems, somatosensory game consoles and wearable devices. The aforementioned electronic devices are only exemplary examples of the actual application of the present invention, and do not limit the scope of application of the variable aperture module, imaging lens module and camera module disclosed in the present invention.

[0150] Although the present disclosure is disclosed in the above embodiments, these embodiments are not intended to limit the present disclosure. Any changes and modifications made without departing from the spirit and scope of the present disclosure are within the scope of patent protection of the present disclosure. Please refer to the attached claims for the scope of protection defined by the present disclosure.

Claims

1. An imaging lens module, characterized in that: Comprising: An imaging lens, comprising an object-side lens group and an image-side lens group, and an optical axis of the imaging lens passes through the object-side lens group and the image-side lens group; A variable aperture module, disposed between the object-side lens group and the image-side lens group, the variable aperture module comprising: A light-shielding sheet group, comprising at least two light-shielding sheets, the at least two light-shielding sheets are stacked with each other along a circumferential direction around the optical axis and jointly form an aperture, and the optical axis passes through the aperture; A plurality of fixed shafts, correspondingly arranged with the light-shielding sheet group; A movable member, correspondingly arranged with the light-shielding sheet group; And A driving mechanism, configured to drive the movable member to rotate along the circumferential direction, so that the light-shielding sheet group is movable relative to the fixed shafts to adjust an aperture size of the aperture; A first spacer, on which the fixed shafts are disposed; And A second spacer, correspondingly arranged with the first spacer; Wherein, the first spacer and the second spacer are coupled to each other and jointly form an internal space, and the internal space accommodates the variable aperture module; and Wherein, the second spacer mounts the object-side lens group and is in physical contact with the object-side lens group.

2. The imaging lens module according to claim 1, characterized in that: A lens group spacing between the object-side lens group and the image-side lens group is T, and an area difference between a maximum aperture and a minimum aperture of the aperture is ΔA, which satisfies the following condition:

3. The imaging lens module according to claim 1, characterized in that: A maximum viewing angle of the imaging lens module is FOV, which satisfies the following condition: 85 degrees < FOV < 210 degrees.

4. The imaging lens module according to claim 1, characterized in that: The variable aperture module further comprises: At least one rolling member, disposed between the first spacer and the movable member, and when the driving mechanism drives the movable member to rotate along the circumferential direction, the at least one rolling member provides the movable member with a rotational freedom relative to the first spacer; A fixed hole element, disposed between the object-side lens group and the image-side lens group, and the fixed hole element is adjacently arranged with the light-shielding sheet group; and A printed circuit board, correspondingly arranged with the driving mechanism and electrically connected to the driving mechanism.

5. The imaging lens module according to claim 4, characterized in that: The fixed hole element comprises a central opening, and the optical axis passes through the central opening.

6. The imaging lens module according to claim 1, characterized in that: The first spacer comprises a notch structure.

7. The imaging lens module according to claim 6, characterized in that: The second spacer comprises a protruding structure, and the protruding structure is oppositely arranged with the notch structure.

8. The imaging lens module according to claim 4, characterized in that: The driving mechanism comprises: At least one coil, disposed on the printed circuit board; and At least one magnet, disposed on the movable member.

9. The imaging lens module according to claim 8, characterized in that: The at least one rolling member and the at least one magnet are arranged along the circumferential direction, and the at least one magnet is adjacent to the at least one rolling member on both sides in the clockwise direction and the counterclockwise direction.

10. The imaging lens module according to claim 8, characterized in that: A length of each of the at least one magnet along the circumferential direction is Lm, and a maximum outer diameter of the movable member is Dm, which satisfies the following condition: 0.1 < Lm / Dm < 0.

8.

11. The imaging lens module according to claim 1, characterized in that: The first spacer mounts the image-side lens group and is in physical contact with the image-side lens group.

12. The imaging lens module according to claim 1, characterized in that: The distance along the direction parallel to the optical axis between the light passing hole and an image side surface of a most image side lens among the image side lens groups is SD, and the distance along the direction parallel to the optical axis between an object side surface of a most object side lens among the object side lens groups and the image side surface of the most image side lens is TD, which satisfies the following condition: 0 < SD / TD < 0.

9.

13. The imaging lens module according to claim 1, characterized in that: The imaging lens further includes: An infrared light cut-off coating disposed on a surface of one of the lenses in the object side lens group.

14. The imaging lens module according to claim 1, characterized in that: One of the lenses in the image side lens group is made of an infrared light cut-off material.

15. The imaging lens module according to claim 1, wherein: It further includes: A fixing ring element disposed on the object side of the imaging lens, and the fixing ring element is in physical contact with a most object side lens among the object side lens groups; and An O-ring disposed between the object side lens group and the second spacer.

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

17. An electronic device, characterized in that: It includes: The camera module according to claim 16.

18. An imaging lens module, characterized in that: It includes: An imaging lens including an object side lens group and an image side lens group, and an optical axis of the imaging lens passes through the object side lens group and the image side lens group; A variable aperture module disposed between the object side lens group and the image side lens group, and the variable aperture module includes: A light shielding sheet group including at least two light shielding sheets, the at least two light shielding sheets are stacked with each other along a circumferential direction around the optical axis and jointly form a light passing hole, and the optical axis passes through the light passing hole; A plurality of fixed shafts correspondingly disposed with the light shielding sheet group; A movable member correspondingly disposed with the light shielding sheet group; And A driving mechanism for driving the movable member to rotate along the circumferential direction, so that the light shielding sheet group is movable relative to the fixed shafts to adjust the aperture size of the light passing hole; A first spacer on which the fixed shafts are disposed; And A second spacer correspondingly disposed with the first spacer; Wherein, the first spacer and the second spacer are coupled to each other and jointly form an internal space, and the internal space accommodates the variable aperture module; and Wherein, the first spacer loads the image side lens group and is in physical contact with the image side lens group.

19. The imaging lens module according to claim 18, characterized in that: The lens group distance between the object side lens group and the image side lens group is T, and the area difference between the maximum aperture and the minimum aperture of the light passing hole is ΔA, which satisfies the following condition:

20. The imaging lens module according to claim 18, wherein: The maximum viewing angle of the imaging lens module is FOV, which satisfies the following condition: 85 degrees < FOV < 210 degrees.

21. The imaging lens module according to claim 18, wherein: The variable aperture module further includes: At least one rolling member disposed between the first spacer and the movable member, and when the driving mechanism drives the movable member to rotate along the circumferential direction, the at least one rolling member provides the movable member with a rotational freedom relative to the first spacer; A fixed hole element disposed between the object side lens group and the image side lens group, and the fixed hole element is disposed adjacent to the light shielding sheet group; and A printed circuit board is arranged corresponding to the driving mechanism and is electrically connected to the driving mechanism.

22. The imaging lens module according to claim 21, characterized in that: The fixing hole element includes a central opening, and the optical axis passes through the central opening.

23. The imaging lens module according to claim 18, characterized in that: The first spacer includes a notch structure.

24. The imaging lens module according to claim 23, characterized in that: The second spacer includes a protrusion structure, and the protrusion structure is arranged opposite to the notch structure.

25. The imaging lens module according to claim 21, characterized in that: The driving mechanism comprises: at least one coil disposed on the printed circuit board; and At least one magnet is disposed on the movable part.

26. The imaging lens module according to claim 25, characterized in that: The at least one rolling element and the at least one magnet are arranged along the circumferential direction, and both sides of the at least one magnet in the clockwise direction and the counterclockwise direction are adjacent to the at least one rolling element.

27. The imaging lens module according to claim 25, characterized in that: The length of each of the at least one magnet along the circumferential direction is Lm, and the maximum outer diameter of the movable part is Dm, which satisfies the following conditions: 0.1 <Lm / Dm<0.8。 28. The imaging lens module according to claim 18, wherein: The distance between the light-through hole and an image-side surface of a most image-side lens in the image-side lens group along a direction parallel to the optical axis is SD, and the distance between an object-side surface of a most object-side lens in the object-side lens group and the image-side surface of the most image-side lens along a direction parallel to the optical axis is TD, which satisfies the following conditions: 0 <SD / TD<0.9。 29. The imaging lens module according to claim 18, wherein: The imaging lens further comprises: An infrared light cut-off coating is disposed on a surface of one of the lenses of the object-side lens group.

30. The imaging lens module according to claim 18, wherein: One of the lenses of the image side lens group is made of infrared light cutoff material.

31. The imaging lens module according to claim 18, wherein: Further including: a fixing ring element, disposed on the object side of the imaging lens, and the fixing ring element is in physical contact with a most object side lens in the object side lens group; and An O-ring is disposed between the object-side lens group and the second spacer.

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