Lens module and electronic equipment

Abstract

The utility model relates to a lens module and electronic equipment. The lens module comprises an object plane end, an image plane end, a first lens group, a second lens group and a third lens group which are arranged along an optical axis direction, a first lens group located between the object plane end and the image plane end; a second lens group located between the first lens group and the image plane end; and the third lens group is positioned between the first lens group and the second lens group and can move between the first lens group and the second lens group along the optical axis direction so as to change the focal length of the lens module. According to the embodiment of the invention, the continuous zooming function of the lens module can be better realized, and the experience feeling of a user for shooting by using the electronic equipment where the lens module is located is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of electronic devices, and in particular, to a lens module and an electronic device. BACKGROUND

[0002] With the rapid development of electronic products, in order to obtain good shooting images in different shooting distances, electronic devices such as mobile phones need to be equipped with zoomable cameras. However, the cameras currently used in mobile phones are all fixed focal length lenses, such as long focal length, wide angle or ultra-wide angle multiple fixed focus lenses used in combination to achieve zoom function, and there is no continuous optical zoom lens like a single-lens reflex camera. CONTENT OF THE UTILITY MODEL

[0003] In order to overcome the problems in the related art, the present disclosure provides a lens module and an electronic device, which can better realize the continuous zoom function of the lens module and improve the user experience of using the electronic device with the lens module for shooting.

[0004] According to a first aspect of an embodiment of the present disclosure, a lens module is provided, comprising at least:

[0005] a subject plane end, an image plane end, a first lens group, a second lens group and a third lens group arranged along an optical axis direction;

[0006] the first lens group is located between the subject plane end and the image plane end;

[0007] the second lens group is located between the first lens group and the image plane end;

[0008] the third lens group is located between the first lens group and the second lens group and can move along the optical axis direction between the first lens group and the second lens group to change the focal length of the lens module.

[0009] In some embodiments, the second lens group is movably arranged between the third lens group and the image plane end and can move along the optical axis direction between the third lens group and the image plane end;

[0010] wherein the second lens group and the third lens group can move to change the focal length of the lens module.

[0011] In some embodiments, the distance between the third lens group and the second lens group is negatively correlated with the focal length of the lens module, and the distance between the second lens group and the image plane end is positively correlated with the focal length of the lens module.

[0012] In some embodiments, the distance between the third lens group and the second lens group ranges from 0.08 mm to 5.64 mm, and the distance between the second lens group and the image plane end ranges from 0.05 mm to 7.03 mm.

[0013] In some embodiments, when the distance between the first lens group and the third lens group ranges from 4.15 mm to 4.55 mm, the distance between the third lens group and the second lens group ranges from 5.24 mm to 5.64 mm, and the distance between the second lens group and the image plane end ranges from 0.05 mm to 0.35 mm, the lens module is in a wide-angle state.

[0014] In some embodiments, when the distance between the first lens group and the third lens group ranges from 4.56 mm to 4.96 mm, the distance between the third lens group and the second lens group ranges from 1.34 mm to 1.74 mm, and the distance between the second lens group and the image plane end ranges from 3.43 mm to 3.83 mm, the lens module is in a medium-long focus state.

[0015] In some embodiments, when the distance between the first lens group and the third lens group ranges from 2.73 mm to 3.13 mm, the distance between the third lens group and the second lens group ranges from 0.08 mm to 0.38 mm, and the distance between the second lens group and the image plane end ranges from 6.63 mm to 7.03 mm, the lens module is in a long focus state.

[0016] In some embodiments, the first lens group is a fixed lens group, the third lens group includes at least two lenses, and the second lens group includes at least two lenses.

[0017] When the third lens group is movable, the at least two lenses in the third lens group are movable along the optical axis between the first lens group and the second lens group.

[0018] When the second lens group is movable, the at least two lenses in the second lens group are movable along the optical axis between the third lens group and the image plane end.

[0019] In some embodiments, the first lens group includes a first lens, the at least two lenses in the third lens group include a second lens, a third lens, and a fourth lens arranged in sequence from the object plane end to the image plane end, and the at least two lenses in the second lens group include a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens arranged in sequence from the object plane end to the image plane end.

[0020] The first lens, the fourth lens, the eighth lens and the ninth lens are all meniscus lenses, the second lens is a plano-convex lens, the fifth lens and the sixth lens are both double-convex lenses, the third lens and the seventh lens are both double-concave lenses, and the tenth lens is a chevron lens; the first lens, the fourth lens and the fifth lens are all curved towards the image plane end, the ninth lens and the tenth lens are both curved towards the object plane end, and the convex surface of the second lens faces the image plane end; and / or,

[0021] The first lens, the third lens, the fifth lens, the sixth lens, the eighth lens and the tenth lens are all high Abbe number rate materials, and the second lens, the fourth lens, the seventh lens and the ninth lens are all high refractive index materials.

[0022] In some embodiments, the first lens comprises a first surface facing the object plane end and a second surface facing the image plane end.

[0023] The sum of the radii of curvature of the second surface and the first surface is a first radius of curvature, and the difference between the radius of curvature of the second surface and the radius of curvature of the first surface is a second radius of curvature; the ratio of the first radius of curvature to the second radius of curvature ranges from 2 to 5.

[0024] In some embodiments, the at least two lenses in the first lens group, the third lens group and the second lens group are all aspherical lenses.

[0025] In some embodiments, at least one lens in the first lens group, the third lens group and the second lens group is made of plastic, or at least one lens in the first lens group, the third lens group and the second lens group is made of glass.

[0026] In some embodiments, the focal length of the lens module ranges from 28 mm to 72 mm.

[0027] In some embodiments, the ratio of the focal length of the third lens group to the focal length of the second lens group ranges from -2 to -1.7.

[0028] In some embodiments, when the lens module is in a wide-angle state, the aperture value of the lens module is less than or equal to 1.8;

[0029] When the lens module is in a medium-long focal state, the aperture value of the lens module is less than or equal to 2.5;

[0030] When the lens module is in a long focal state, the aperture value of the lens module is less than or equal to 3.5.

[0031] In some embodiments, the imaging height of the lens module is greater than or equal to 12 mm.

[0032] In some embodiments, the ratio between the total optical length of the lens module and the imaging height of the lens module is less than or equal to 1.37.

[0033] According to a second aspect of the embodiments of the present disclosure, an electronic device is provided, at least comprising the lens module according to the first aspect.

[0034] The technical solutions provided by the embodiments of the present disclosure can include the following beneficial effects:

[0035] The lens module provided by the embodiments of the present disclosure comprises: an object plane end, an image plane end, a first lens group, a second lens group and a third lens group arranged along the optical axis direction; the first lens group is located between the object plane end and the image plane end; the second lens group is located between the first lens group and the image plane end; and the third lens group is located between the first lens group and the second lens group and can move along the optical axis direction between the first lens group and the second lens group to change the focal length of the lens module.

[0036] In this way, by sequentially arranging the first lens group, the third lens group and the second lens group between the object plane end and the image plane end arranged along the optical axis direction in the lens module, and by enabling the third lens group to move along the optical axis direction between the first lens group and the second lens group, the focal length of the lens module can be changed by changing the distance between the first lens group and the third lens group and the distance between the third lens group and the second lens group, so that the continuous zoom function of the lens module can be better realized, and the experience of using the electronic device in which the lens module is located to take photos can be improved.

[0037] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0039] Figure 1 is a structural schematic diagram of a lens module according to an exemplary embodiment Figure 1 .

[0040] Figure 2a is a structural schematic diagram of a lens module in a wide-angle state according to an exemplary embodiment.

[0041] Figure 2bFig. 6 is a structural schematic diagram of a lens module in a long-focus state according to an exemplary embodiment.

[0042] Figure 2c Fig. 7 is a structural schematic diagram of a lens module in a long-focus state according to an exemplary embodiment.

[0043] Figure 3a Fig. 8 is a distortion curve diagram of a lens module in a wide-angle state according to an exemplary embodiment.

[0044] Figure 3b Fig. 9 is a distortion curve diagram of a lens module in a medium-long-focus state according to an exemplary embodiment.

[0045] Figure 3c Fig. 10 is a distortion curve diagram of a lens module in a long-focus state according to an exemplary embodiment.

[0046] Figure 4a Fig. 11 is a spherical aberration curve diagram of a lens module in a wide-angle state according to an exemplary embodiment.

[0047] Figure 4b Fig. 12 is a spherical aberration curve diagram of a lens module in a medium-long-focus state according to an exemplary embodiment.

[0048] Figure 4c Fig. 13 is a spherical aberration curve diagram of a lens module in a long-focus state according to an exemplary embodiment.

[0049] Figures 5a-5c Fig. 14 is a diffraction modulation schematic diagram of a lens module in different states according to an exemplary embodiment.

[0050] Figure 6 Fig. 15 is a structural schematic diagram of a conventional lens module according to an exemplary embodiment.

[0051] Figure 7 Fig. 16 is a structural block diagram of an electronic device according to an exemplary embodiment.

[0052] Figures 1-6 Reference numerals:

[0053] 10-lens module, 11-object plane end, 12-image plane end, 13-first lens group, 14-second lens group, 15-third lens group, F-optical axis direction, 131-first lens, 151-second lens, 152-third lens, 153-fourth lens, 141-fifth lens, 142-sixth lens, 143-seventh lens, 144-eighth lens, 145-ninth lens, 146-tenth lens, 20-traditional lens module, 21-light guide element, 22-first group of lenses, 23-second group of lenses, 24-third group of lenses, 25-imaging plane. DETAILED DESCRIPTION

[0054] The exemplary embodiments will be described in detail hereinbelow with reference to the drawings. In the following description, the same numbers are used to denote the same or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not meant to represent all embodiments consistent with the present disclosure. Rather, they are merely examples of structures consistent with some aspects of the present disclosure as detailed in the appended claims.

[0055] The technical solutions provided by the various embodiments of the present disclosure are described in detail below in conjunction with the drawings.

[0056] In the related art, the camera used in the current mobile phone is a fixed focal length lens. For example, a zoom function is achieved by using multiple fixed focus lenses such as long focal, wide angle, or ultra-wide angle lenses in combination. There is no continuous optical zoom lens like a single-lens reflex camera.

[0057] Based on this, the embodiments of the present disclosure provide a lens module. Figure 1 is a structural schematic of a lens module according to an exemplary embodiment Figure 1 As shown in Figure 1 The lens module 10 can include:

[0058] An object plane end 11, an image plane end 12, a first lens group 13, a second lens group 14, and a third lens group 15 arranged along an optical axis direction F;

[0059] The first lens group 13 is located between the object plane end 11 and the image plane end 12.

[0060] The second lens group 14 is located between the first lens group 13 and the image plane end 12.

[0061] The third lens group 15 is located between the first lens group 13 and the second lens group 14 and is movable along the optical axis direction F between the first lens group 13 and the second lens group 14 to change the focal length of the lens module 10.

[0062] In the embodiments of the present disclosure, the lens module can be an optical lens used for realizing zoom function in an electronic device; and the electronic device can be a smart phone, a tablet computer, various wearable devices, a virtual reality (VR) device, a monitoring device, a vehicle-mounted device, a smart home device, or any device with a camera function.

[0063] Here, the object plane end can refer to an end of the lens module facing a photographed object, the image plane end can refer to an end of the lens module facing a camera sensor, i.e., an imaging end, and the optical axis direction can refer to a central axis direction along which light passes through the lens module.

[0064] The first lens group, the third lens group, and the second lens group can be lens groups arranged in sequence between the object plane end and the image plane end in the lens module. The first lens group can include at least one lens, for example, 1 lens or 2 lenses, etc. The third lens group can also include at least one lens, for example, 2 lenses, 3 lenses, or 4 lenses, etc. The second lens group can also include at least one lens, for example, 5 lenses, 6 lenses, or 7 lenses, etc. The embodiments of the present disclosure do not limit this.

[0065] It can be understood that the first lens group, the third lens group, and the second lens group can be arranged in sequence between the object plane end and the image plane end along the optical axis direction, and the third lens group can move between the first lens group and the second lens group along the optical axis direction. The optical axis direction can be perpendicular to the surface of each lens in the first lens group, the third lens group, and the second lens group.

[0066] That is, the electronic device in which the lens module is located can change the distance between the first lens group and the third lens group and the distance between the third lens group and the second lens group by controlling the third lens group to move between the first lens group and the second lens group along the optical axis direction, so as to change the focal length of the lens module, thereby realizing the continuous zoom function of the lens module.

[0067] It should be noted that, in the embodiments of the present disclosure, the focal length of the lens module can be changed by controlling the third lens group to move between the first lens group and the second lens group along the optical axis direction; or the focal length of the lens module can also be changed by controlling the second lens group to move between the third lens group and the image plane end along the optical axis direction, and controlling the third lens group to move between the first lens group and the second lens group along the optical axis direction, and the embodiments of the present disclosure do not limit this.

[0068] In some embodiments, as shown in FIG. 1, the second lens group 14 is movably arranged between the third lens group 15 and the image plane end 12, and can move between the third lens group 15 and the image plane end 12 along the optical axis direction F. Figure 1 ​

[0069] The second lens group 14 and the third lens group 15 are both movable to change the focal length of the lens module 10.

[0070] In this way, by setting the second lens group and the third lens group to be both movable along the optical axis direction between the object plane end and the image plane end, the interval between the first lens group and the third lens group, the interval between the third lens group and the second lens group, and the interval between the second lens group and the image plane end can be changed to change the focal length of the lens module, so that the continuous zoom function of the lens module can be effectively realized, and the experience of the user using the electronic device with the lens module to take a photo can be better improved.

[0071] Here, the third lens group and the second lens group are both movably arranged between the first lens group and the image plane end; at this time, the third lens group is movable along the optical axis direction between the first lens group and the second lens group, and the second lens group is movable along the optical axis direction between the third lens group and the image plane end, and the focal length of the lens module is changed by controlling the movement of the two lens groups.

[0072] It can be understood that the electronic device with the lens module can change the interval between the first lens group and the third lens group and the interval between the third lens group and the second lens group by controlling the third lens group to move along the optical axis direction between the first lens group and the second lens group, and can control the second lens group to move along the optical axis direction between the third lens group and the image plane end to change the interval between the third lens group and the second lens group and the interval between the second lens group and the image plane end, so that the focal length of the lens module can be changed, and the continuous zoom function of the lens module can be realized.

[0073] In some embodiments, the interval between the third lens group and the second lens group is negatively correlated with the focal length of the lens module, and the interval between the second lens group and the image plane end is positively correlated with the focal length of the lens module.

[0074] In this way, by controlling the interval between the third lens group and the second lens group and the interval between the second lens group and the image plane end to change the focal length of the lens module, the continuous zoom function of the lens module can be further effectively realized, and the experience of the user using the electronic device with the lens module to take a photo can be improved.

[0075] In the embodiments of the present disclosure, the interval between the third lens group and the second lens group can be the interval between the image side surface of a lens in the third lens group closest to the second lens group and the object side surface of a lens in the second lens group closest to the third lens group. The interval between the second lens group and the image plane end can be the interval between the image side surface of a lens in the second lens group closest to the image plane end and the image plane end. Here, the image side surface can refer to the side of the lens facing the image plane end, and the object side surface can refer to the side of the lens facing the object plane end.

[0076] Here, the interval between the third lens group and the second lens group is negatively correlated with the focal length of the lens module, which can be understood as that the larger the interval between the third lens group and the second lens group, the smaller the focal length of the lens module; or the smaller the interval between the third lens group and the second lens group, the larger the focal length of the lens module. The interval between the second lens group and the image plane end is positively correlated with the focal length of the lens module, which can be understood as that the larger the interval between the second lens group and the image plane end, the larger the focal length of the lens module; or the smaller the interval between the second lens group and the image plane end, the smaller the focal length of the lens module.

[0077] In some embodiments, the interval between the first lens group and the third lens group can be in a non-linear relationship, that is, the first lens group and the third lens group move in a non-linear manner. For example, when the lens module is transformed from the wide-angle state to the medium-long focal state, the interval between the first lens group and the third lens group can increase; and when the lens module is transformed from the medium-long focal state to the long focal state, the interval between the first lens group and the third lens group can decrease.

[0078] For example, during the transformation of the lens module from the wide-angle state to the long focal state, that is, when the focal length of the lens module gradually increases, the interval between the third lens group and the second lens group gradually decreases, the interval between the second lens group and the image plane end gradually increases, and the interval between the first lens group and the third lens group can first increase and then decrease, etc.

[0079] It should be noted that, due to the limited internal space of the electronic device in which the lens module is located, the movable space of the third lens group and the second lens group is also limited, that is, the interval between the first lens group and the third lens group is within a first preset range, the interval between the third lens group and the second lens group is within a second preset range, and the interval between the second lens group and the image plane end is within a third preset range; for example, the first preset range can be 2.73 millimeters (mm) to 4.96 mm, the second preset range can be 0.08 mm to 5.64 mm, and the third preset range can be 0.05 mm to 7.03 mm, etc.

[0080] In some embodiments, the interval between the third lens group and the second lens group ranges from 0.08 mm to 5.64 mm, and the interval between the second lens group and the image plane end ranges from 0.05 mm to 7.03 mm.

[0081] In this way, by setting the interval between the third lens group and the second lens group to range from 0.08 mm to 5.64 mm, and the interval between the second lens group and the image plane end to range from 0.05 mm to 7.03 mm, the continuous zoom function of the lens module can be effectively realized, and the moving space of the first lens group, the third lens group, and the second lens group can be further reduced, so that the miniaturization of the lens module can be better achieved.

[0082] For example, when the lens module is in the wide-angle state, the interval between the first lens group and the third lens group can be 4.35 mm, the interval between the third lens group and the second lens group can be 5.44 mm, and the interval between the second lens group and the image plane end can be 0.15 mm; when the lens module is in the medium-long focus state, the interval between the first lens group and the third lens group can be 4.76 mm, the interval between the third lens group and the second lens group can be 1.54 mm, and the interval between the second lens group and the image plane end can be 3.63 mm; when the lens module is in the long focus state, the interval between the first lens group and the third lens group can be 2.93 mm, the interval between the third lens group and the second lens group can be 0.18 mm, and the interval between the second lens group and the image plane end can be 6.83 mm, and the like.

[0083] In the embodiments of the present disclosure, the focal length of the lens module can be the equivalent focal length of the combination of each lens group in the first lens group, the third lens group, and the second lens group; for example, the equivalent focal length of the lens module can be 30 mm, 50 mm, or 70 mm, and the like.

[0084] In some embodiments, the focal length of the lens module ranges from 28 mm to 72 mm. In this way, by setting the focal length of the combination of each lens group in the first lens group, the third lens group, and the second lens group of the lens module to range from 28 mm to 72 mm, the continuous zoom function of the lens module from 1 to 3 times, i.e., from the wide-angle state to the long focus state, can be better achieved, and the design requirements of large base and large aperture can be better met.

[0085] Here, the large base can refer to the size of the image sensor of the camera in the electronic device in which the lens module is located; the large-size image sensor can have stronger photosensitivity and can capture more light, thereby exhibiting better imaging effects in low-light environments. The large aperture can refer to the size of the aperture of the lens module; the large aperture can capture more light to ensure the brightness and clarity of the picture.

[0086] It should be noted that the focal number (Focal number, FNO), that is, the F value, can refer to the ratio of the focal length of the lens module to the entrance pupil diameter; wherein the smaller the F value, the larger the entrance pupil diameter, that is, the larger the aperture, which can represent that the larger the light aperture of the lens module, the stronger the light transmission capability, and the lens module can capture more light under the same illumination condition.

[0087] For example, assuming that the standard focal length of the lens module is 25 mm, when the equivalent focal length of the lens module is 28 mm, the lens module realizes a zoom function of 28 / 25 = 1.12, which is approximately equal to 1 times; or when the equivalent focal length of the lens module is 50 mm, the lens module realizes a zoom function of 50 / 25 = 2 times; or when the equivalent focal length of the lens module is 72 mm, the lens module realizes a zoom function of 72 / 25 = 2.88, which is approximately equal to 3 times, and the like.

[0088] In some embodiments, the ratio of the focal length of the third lens group to the focal length of the second lens group ranges from -2 to -1.7. In this way, by setting the first lens group, the third lens group and the second lens group of the lens module, such that the ratio of the focal length of the third lens group to the focal length of the second lens group is within the range of -2 to -1.7, the structure of the lens module can be made more compact, so as to realize the miniaturization of the electronic device in which the lens module is located.

[0089] Here, the focal length of the third lens group can refer to the equivalent focal length of the combination of lenses in the third lens group, and the focal length of the second lens group can refer to the equivalent focal length of the combination of lenses in the second lens group.

[0090] It can be understood that, since the third lens group and the second lens group can move along the optical axis direction, the focal length of the third lens group and the focal length of the second lens group can both change, and the ratio of the focal length of the third lens group to the focal length of the second lens group is within the range of -2 to -1.7, so that the focal length of the lens module can be changed by the position change of the third lens group and the second lens group.

[0091] The embodiments of the present disclosure provide a lens module, which comprises: an object plane end, an image plane end, a first lens group, a second lens group and a third lens group arranged along an optical axis direction; the first lens group is located between the object plane end and the image plane end; the second lens group is located between the first lens group and the image plane end; the third lens group is located between the first lens group and the second lens group and can move along the optical axis direction between the first lens group and the second lens group to change the focal length of the lens module.

[0092] Therefore, the first lens group, the third lens group and the second lens group are sequentially arranged between the object plane end and the image plane end arranged along the optical axis direction in the lens module, and the third lens group is movable along the optical axis direction between the first lens group and the second lens group, so that the focal length of the lens module can be changed by changing the distance between the first lens group and the third lens group and the distance between the third lens group and the second lens group, thereby better realizing the continuous zoom function of the lens module and improving the experience of the user in using the electronic device in which the lens module is arranged to take a photo.

[0093] Figure 2a is a structural schematic view of a lens module in a wide-angle state according to an example embodiment, Figure 2b is a structural schematic view of a lens module in a medium-long focal state according to an example embodiment, Figure 2c is a structural schematic view of a lens module in a long focal state according to an example embodiment.

[0094] As shown in Figures 2a-2c , when the distance between the first lens group and the third lens group is in a range of 4.15 mm to 4.55 mm, the distance between the third lens group and the second lens group is in a range of 5.24 mm to 5.64 mm, and the distance between the second lens group and the image plane end is in a range of 0.05 mm to 0.35 mm, the lens module is in a wide-angle state;

[0095] when the distance between the first lens group and the third lens group is in a range of 4.56 mm to 4.96 mm, the distance between the third lens group and the second lens group is in a range of 1.34 mm to 1.74 mm, and the distance between the second lens group and the image plane end is in a range of 3.43 mm to 3.83 mm, the lens module is in a medium-long focal state;

[0096] when the distance between the first lens group and the third lens group is in a range of 2.73 mm to 3.13 mm, the distance between the third lens group and the second lens group is in a range of 0.08 mm to 0.38 mm, and the distance between the second lens group and the image plane end is in a range of 6.63 mm to 7.03 mm, the lens module is in a long focal state.

[0097] Therefore, by controlling the distance between the first lens group and the third lens group, the distance between the third lens group and the second lens group, and the distance between the second lens group and the image plane end to be in different ranges respectively, the lens module can be controlled to be in different focal lengths, thereby better realizing the continuous zoom function of the lens module and effectively improving the experience of the user in using the electronic device in which the lens module is arranged to take a photo.

[0098] In the embodiments of the present disclosure, when the lens module is in a wide-angle state, the focal length range of the lens module can be 24mm to 38mm; at this time, the angle of view range of the lens module can be 60 to 84 degrees, the focal length of the lens module is short, the angle of view is large, and the depth of field is long, so that a large area of scenery can be shot within a short shooting distance. When the lens module is in a medium-long focal state, the focal length range of the lens module can be 40mm to 55mm; at this time, the angle of view of the lens module is small, the field of view is narrow, and the depth of field is short; the medium-long focal lens has the function of "zooming in", which can bring the distant scenery close to the picture. When the lens module is in a long focal state, the focal length range of the lens module can be more than 70mm; at this time, the angle of view of the lens module is small, the spatial range of the shot scenery is small, and the depth of field is short.

[0099] It can be understood that when the interval range between the first lens group and the third lens group is 4.15mm to 4.55mm, the interval between the third lens group and the second lens group is in the range of 5.24mm to 5.64mm, and the interval between the second lens group and the image plane end is in the range of 0.05mm to 0.35mm, the lens module can be in a wide-angle state; when the interval range between the first lens group and the third lens group is 4.56mm to 4.96mm, the interval between the third lens group and the second lens group is in the range of 1.34mm to 1.74mm, and the interval between the second lens group and the image plane end is in the range of 3.43mm to 3.83mm, the lens module can be in a medium-long focal state; when the interval range between the first lens group and the third lens group is 2.73mm to 3.13mm, the interval between the third lens group and the second lens group is in the range of 0.08mm to 0.38mm, and the interval between the second lens group and the image plane end is in the range of 6.63mm to 7.03mm, the lens module can be in a long focal state.

[0100] It should be noted that when the interval range between the third lens group and the second lens group is 1.74mm to 5.24mm, and the interval range between the second lens group and the image plane end is 0.35mm to 3.43mm, the lens module can be in a medium focal state; when the interval range between the third lens group and the second lens group is 0.38mm to 1.34mm, and the interval range between the second lens group and the image plane end is 3.83mm to 6.63mm, the lens module can be in a medium-long focal-long focal state.

[0101] In some embodiments, as shown in FIGS. 1 to 3, the first lens group 13 is a fixed lens group; the third lens group 15 includes at least two lenses, and the second lens group 14 includes at least two lenses. Figure 1 Figures 2a-2c In some embodiments, as shown in FIGS. 1 to 3, the first lens group 13 is a fixed lens group; the third lens group 15 includes at least two lenses, and the second lens group 14 includes at least two lenses.

[0102] ​At least two lenses in the third lens group 15 are movable along the optical axis direction F between the first lens group 13 and the second lens group 14 when the third lens group 15 is movable.

[0103] At least two lenses in the second lens group 14 are movable along the optical axis direction F between the third lens group 15 and the image plane end 12 when the second lens group 14 is movable.

[0104] In this way, by setting the first lens group as a fixed lens group, and setting at least two lenses in the third lens group and the second lens group respectively, and at least two lenses in the third lens group are movable along the optical axis direction between the first lens group and the second lens group, and at least two lenses in the second lens group are movable along the optical axis direction between the third lens group and the image plane end, the focal length of the lens module can be changed by changing the distance between the first lens group and the third lens group, the distance between the third lens group and the second lens group, and the distance between the second lens group and the image plane end, so that the continuous zoom function of the lens module can be effectively realized, and the experience of the user using the electronic device with the lens module for shooting can be improved.

[0105] In the embodiments of the present disclosure, the first lens group can be a fixed lens group, that is, the distance between the first lens group and the object plane end and the distance between the first lens group and the image plane end are fixed and unchanged. At least two lenses in the third lens group can be arranged in sequence along the optical axis direction between the first lens group and the second lens group, and the third lens group has a distance between adjacent two lenses; at least two lenses in the second lens group can be arranged in sequence along the optical axis direction between the third lens group and the image plane end, and the second lens group has a distance between adjacent two lenses.

[0106] It should be noted that, when the third lens group is movable, the distance between any two lenses in the third lens group can remain unchanged; when the second lens group is movable, the distance between any two lenses in the second lens group can also remain unchanged. Alternatively, when the third lens group is movable, the distance between adjacent two lenses in the first lens group can change; when the second lens group is movable, the distance between adjacent two lenses in the second lens group can also change, and the embodiments of the present disclosure do not make any limitation.

[0107] In some embodiments, as shown in FIG. 1, Figures 2a-2c The first lens group 13 includes a first lens 131, at least two lenses in the third lens group 15 include a second lens 151, a third lens 152 and a fourth lens 153 arranged in sequence from the object plane end 11 to the image plane end 12, and at least two lenses in the second lens group 14 include a fifth lens 141, a sixth lens 142, a seventh lens 143, an eighth lens 144, a ninth lens 145 and a tenth lens 146 arranged in sequence from the object plane end 11 to the image plane end 12;

[0108] The first lens 131, the fourth lens 153, the eighth lens 144 and the ninth lens 145 are all meniscus lenses, the second lens 151 is a plano-convex lens, the fifth lens 141 and the sixth lens 142 are both double-convex lenses, the third lens 152 and the seventh lens 143 are both double-concave lenses, and the tenth lens 146 is a chevron lens; the first lens 131, the fourth lens 153 and the eighth lens 144 are all curved towards the image plane end 12, the ninth lens 145 and the tenth lens 146 are both curved towards the object plane end 11, and the convex surface of the second lens 151 faces the image plane end 12; and / or,

[0109] The first lens 131, the third lens 152, the fifth lens 141, the sixth lens 142, the eighth lens 144 and the tenth lens 146 are all high Abbe number rate materials, and the second lens 151, the fourth lens 153, the seventh lens 143 and the ninth lens 145 are all high refractive index materials.

[0110] In this way, one lens can be arranged in the first lens group, three lenses can be arranged in the third lens group in sequence from the object plane end to the image plane end, and six lenses can be arranged in the second lens group in sequence from the object plane end to the image plane end, and the first lens, the fourth lens, the eighth lens and the ninth lens are all meniscus lenses, the second lens is a plano-convex lens, the fifth lens and the sixth lens are both double-convex lenses, the third lens and the seventh lens are both double-concave lenses, and the tenth lens is a chevron lens, and the first lens, the fourth lens and the eighth lens are all curved towards the image plane end, the ninth lens and the tenth lens are both curved towards the object plane end, and the convex surface of the second lens faces the image plane end, so that the focal length of the lens module can be changed by changing the distance between the first lens group and the third lens group, the distance between the third lens group and the second lens group, and the distance between the second lens group and the image plane end, to achieve the continuous zoom function of the lens module, and effectively improve the user experience of using the electronic device with the lens module.

[0111] In addition, by arranging the first lens, the third lens, the fifth lens, the sixth lens, the eighth lens and the tenth lens to be high Abbe number rate materials, the dispersion of light in the lens module can be better reduced, and the imaging quality of the lens module can be improved; and by arranging the second lens, the fourth lens, the seventh lens and the ninth lens to be high refractive index materials, the refractive index of the lens module can be improved while the weight and volume of the lens module are reduced, and the portability and comfort of the lens module are improved.

[0112] In the embodiments of the present disclosure, the first lens group can include a first lens, the third lens group can include a second lens, a third lens and a fourth lens, and the second lens group can include a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens.

[0113] Here, the order in which the lenses are sequentially arranged along the optical axis between the object plane and the image plane can be: first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, eighth lens, ninth lens, and tenth lens. The second, third, and fourth lenses can be relatively fixed, meaning the distance between any two lenses in the third lens group can remain constant; similarly, the fifth, sixth, seventh, eighth, ninth, and tenth lenses can also be relatively fixed, meaning the distance between any two lenses in the second lens group can also remain constant.

[0114] It is understandable that the electronic device containing the lens module can control the movement of the second, third, and fourth lenses as a whole, as well as the fifth, sixth, seventh, eighth, ninth, and tenth lenses, between the object plane and the image plane to change the distance between the first and second lenses, the distance between the fourth and fifth lenses, and the distance between the tenth lens and the image plane, thereby changing the focal length of the lens module, such as changing from a wide-angle state to a telephoto state.

[0115] Table 1

[0116] D1 D2 D3 Wide angle state 4.35 5.44 0.15 Medium tele state 4.76 1.54 3.63 Tele state 2.93 0.18 6.83

[0117] In Table 1, D1 can refer to the distance between the first lens and the second lens, D2 can refer to the distance between the fourth lens and the fifth lens, and D3 can refer to the distance between the tenth lens and the image plane.

[0118] For example, such as Figure 2a As shown in Table 1, when the lens module 10 is in wide-angle mode, the distance between the first lens 131 and the second lens 151 can be in the range of 4.15mm to 4.55mm. For example, the distance between the first lens 131 and the second lens 151 can be 4.35mm; the distance between the fourth lens 153 and the fifth lens 141 can be in the range of 5.24mm to 5.64mm. For example, the distance between the fourth lens 153 and the fifth lens 141 can be 5.44mm; the distance between the tenth lens 146 and the image plane end 12 can be in the range of 0.05mm to 0.35mm. For example, the distance between the tenth lens 146 and the image plane end 12 can be 0.15mm.

[0119] like Figure 2bAs shown in Table 1, when the lens module 10 is in a medium-long focal length state, the distance between the first lens 131 and the second lens 151 can be in the range of 4.56mm to 4.96mm. For example, the distance between the first lens 131 and the second lens 151 can be 4.76mm; the distance between the fourth lens 153 and the fifth lens 141 can be in the range of 1.34mm to 1.74mm. For example, the distance between the fourth lens 153 and the fifth lens 141 can be 1.54mm; and the distance between the tenth lens 146 and the image plane end 12 can be in the range of 3.43mm to 3.83mm. For example, the distance between the tenth lens 146 and the image plane end 12 can be 3.63mm.

[0120] like Figure 2c As shown in Table 1, when the lens module 10 is in telephoto mode, the distance between the first lens 131 and the second lens 151 can be in the range of 2.73mm to 3.13mm. For example, the distance between the first lens 131 and the second lens 151 can be 2.93mm; the distance between the fourth lens 153 and the fifth lens 141 can be in the range of 0.08mm to 0.38mm. For example, the distance between the fourth lens 153 and the fifth lens 141 can be 0.18mm; the distance between the tenth lens 146 and the image plane end 12 can be in the range of 6.63mm to 7.03mm. For example, the distance between the tenth lens 146 and the image plane end 12 can be 6.83mm.

[0121] In this embodiment of the disclosure, a crescent-shaped lens can refer to a lens with one side being convex and the other side being concave; a plano-convex lens can refer to a lens with one side being flat and the other side being convex; a biconvex lens can refer to a lens with both sides being convex; a biconcave lens can refer to a lens with both sides being concave; and a bow-shaped lens can refer to a lens whose overall shape is bow-shaped.

[0122] Here, the first, fourth, eighth, and ninth lenses can all be meniscus lenses, with the first, fourth, and eighth lenses curved towards the image plane, and the ninth lens curved towards the object plane. That is, the object-side surfaces of the first, fourth, and eighth lenses can all be convex, and the image-side surfaces of the first, fourth, and eighth lenses can all be concave, while the object-side surface of the ninth lens can be concave and the image-side surface of the ninth lens can be convex. The second lens can be a plano-convex lens, with its object-side surface being flat and its image-side surface being convex, meaning the convex surface of the second lens faces towards the image plane.

[0123] It can be understood that the high Abbe number material can refer to a small dispersion of the corresponding lens, that is, the refractive ability of the lens to light rays of different wavelengths is close, which can reduce the chromatic aberration of the lens module. The Abbe number, also known as the dispersion coefficient, is an important indicator for measuring the dispersion ability of the lens material.

[0124] Here, the high refractive index material can determine the degree of deflection of light when entering from one medium to another medium. The high refractive index material can refer to a greater degree of deflection of light when passing through the lens, thereby allowing the design of thinner and lighter lenses.

[0125] In some embodiments, the first lens includes a first surface towards the object plane end and a second surface towards the image plane end.

[0126] The sum of the curvature radius of the second surface and the curvature radius of the first surface is a first curvature radius, and the difference between the curvature radius of the second surface and the curvature radius of the first surface is a second curvature radius; the ratio of the first curvature radius to the second curvature radius ranges from 2 to 5.

[0127] In this way, by setting the sum of the curvature radius of the second surface and the curvature radius of the first surface of the first lens, and the difference between the curvature radius of the second surface and the curvature radius of the first surface, that is, the ratio of the first curvature radius to the second curvature radius ranges from 2 to 5, the lens module can reach an optimal balance state during zooming, which is beneficial to achieve a larger zoom range, improve the imaging quality of the lens module, shorten the total optical length of the lens module, reduce the volume of the lens module, and realize the miniaturization of the electronic device where the lens module is located.

[0128] In the embodiments of the present disclosure, the first surface can be an object side surface of the first lens towards the object plane end, and the second surface can be an image side surface of the first lens towards the image plane end.

[0129] The first curvature radius can be obtained by adding the curvature radius of the second surface and the curvature radius of the first surface, and the second curvature radius can be obtained by subtracting the curvature radius of the first surface from the curvature radius of the second surface.

[0130] Here, the curvature radius can be used to describe the bending degree of the lens surface; the size of the curvature radius can affect the refraction and focusing ability of the lens to light. For a convex lens, its surface protrudes outward, and the curvature radius is positive; for a concave lens, its surface is concave inward, and the curvature radius is negative. For example, the curvature radius of the first surface can refer to the bending degree of the first surface of the first lens, and the curvature radius of the second surface can refer to the bending degree of the second surface of the first lens.

[0131] For example, the above lens module can satisfy the relationship: 2 < (R2+R1) / (R2-R1) < 5; where R1 is the curvature radius of the first surface, and R2 is the curvature radius of the second surface.

[0132] In some embodiments, the at least two lenses in the first lens group, the third lens group and the at least two lenses in the second lens group are all aspherical lenses. In this way, by setting the at least two lenses in the first lens group, the third lens group and the at least two lenses in the second lens group as aspherical lenses, on the one hand, the aberration of the spherical lenses can be significantly reduced to provide clearer and more accurate imaging effect; on the other hand, the lenses can be made thinner and lighter to make the electronic device smaller.

[0133] Here, the aspherical lens can be a special designed optical lens, and the surface or any cross section of the aspherical lens is not in the shape of a sphere. The aspherical lens is characterized in that the radius of curvature from the center to the edge changes continuously with the increase of the height, and this change enables the aspherical lens to correct optical aberrations such as spherical aberration, coma, astigmatism and distortion more effectively.

[0134] In the embodiments of the present disclosure, the object side of the at least two lenses in the first lens group, the third lens group and the at least two lenses in the second lens group can be set as aspherical, and the image side of the at least two lenses in the first lens group, the third lens group and the at least two lenses in the second lens group can also be set as aspherical. The radius of curvature of the aspherical lens from the center to the edge changes continuously with the increase of the height, and this change enables the aspherical lens to correct optical aberrations such as spherical aberration, chromatic aberration and distortion more effectively, thereby improving the flexibility and optimization space of the radius of curvature of the object side and the image side of the lenses in the first lens group, the third lens group and the second lens group.

[0135] In some embodiments, at least one lens in the first lens group, the third lens group and the second lens group is made of plastic, or at least one lens in the first lens group, the third lens group and the second lens group is made of glass.

[0136] In this way, by setting at least one lens in the first lens group, the third lens group and the second lens group to be made of plastic, or at least one lens in the first lens group, the third lens group and the second lens group to be made of glass, the light transmittance of the lens module can be improved to improve the imaging effect of the lens module.

[0137] In the embodiments of the present disclosure, when the lens in the first lens group is made of plastic, at least one lens in the third lens group and the second lens group is made of plastic, or each lens in the third lens group and the second lens group is made of glass; when the lens in the first lens group is made of glass, at least one lens in the third lens group and the second lens group is made of glass, or each lens in the third lens group and the second lens group is made of plastic.

[0138] For example, in the case that the first lens group includes the first lens, the third lens group includes the second lens to the fourth lens, and the second lens group includes the fifth lens to the tenth lens, the first lens to the tenth lens can all be made of plastic or glass; or, one of the first lens to the tenth lens can be made of glass and the other nine lenses can be made of plastic; or, two of the first lens to the tenth lens can be made of glass and the other eight lenses can be made of plastic; or, three of the first lens to the tenth lens can be made of glass and the other seven lenses can be made of plastic; and so on.

[0139] Table 2

[0140]

[0141] For example, as shown in Table 2 above, the object side surface of the first lens, i.e., the surface with surface number 1, and the image side surface of the first lens, i.e., the surface with surface number 2, can both be aspherical surfaces, and the curvature radius of the object side surface of the first lens can be -15.53 mm and the curvature radius of the image side surface of the first lens can be -27.31 mm; the thickness of the first lens along the optical axis can be 1.4 mm, and the distance between the image side surface of the first lens and the object side surface of the second lens can be D1 in Table 1 above. Similarly, the object side surface of the fourth lens, i.e., the surface with surface number 7, and the image side surface of the fourth lens, i.e., the surface with surface number 8, can both be aspherical surfaces, and the curvature radius of the object side surface of the fourth lens can be 5.19 mm and the curvature radius of the image side surface of the fourth lens can be 3.32 mm; the thickness of the fourth lens along the optical axis can be 0.60 mm, and the distance between the image side surface of the fourth lens and the object side surface of the fifth lens can be D2 in Table 1 above.

[0142] Similarly, the object side surface of the tenth lens, i.e., the surface with surface number 19, and the image side surface of the tenth lens, i.e., the surface with surface number 20, can both be aspherical surfaces, and the curvature radius of the object side surface of the tenth lens can be -15.56 mm and the curvature radius of the image side surface of the tenth lens can be 9.19 mm; the thickness of the tenth lens along the optical axis can be 0.59 mm, and the distance between the image side surface of the tenth lens and the image plane end can be D3 in Table 1 above.

[0143] In some embodiments, when the lens module is in the wide-angle state, the aperture value of the lens module is less than or equal to 1.8;

[0144] When the lens module is in the medium-long focal state, the aperture value of the lens module is less than or equal to 2.5;

[0145] When the lens module is in the long focal state, the aperture value of the lens module is less than or equal to 3.5.

[0146] In this way, by setting the first lens group, the third lens group and the second lens group in the lens module, the aperture value of the lens module is less than or equal to 1.8 when the lens module is in the wide-angle state, the aperture value of the lens module is less than or equal to 2.5 when the lens module is in the medium-long focus state, and the aperture value of the lens module is less than or equal to 3.5 when the lens module is in the long focus state, so that the design requirement of large aperture can be better met, and the experience of the user in using the electronic device with the lens module to take a photo is improved without losing the imaging quality of the lens module.

[0147] In the embodiments of the present disclosure, the aperture value of the lens module can refer to the aperture coefficient FNO of the lens module, that is, the F value; the smaller the aperture value is, the larger the entrance pupil diameter is, that is, the larger the aperture is, which can represent that the larger the light aperture of the lens module is, and the stronger the light transmission capability is, so as to meet the design requirement of large aperture of the lens module and improve the imaging brightness and clarity of the lens module.

[0148] Here, when the focal length of the lens module changes to the focal length range corresponding to the wide-angle state, for example, the focal length of the lens module changes to 30 mm, the FNO of the lens module is less than or equal to 1.8; when the focal length of the lens module changes to the focal length range corresponding to the medium-long focus state, for example, the focal length of the lens module changes to 50 mm, the FNO of the lens module is less than or equal to 2.5; and when the focal length of the lens module changes to the focal length range corresponding to the long focus state, for example, the focal length of the lens module changes to 70 mm, the FNO of the lens module is less than or equal to 3.5.

[0149] In some embodiments, the imaging height of the lens module is greater than or equal to 12 mm. In this way, by setting the first lens group, the third lens group and the second lens group in the lens module, the imaging height of the lens module can be greater than or equal to 12 mm, so that the design requirement of large bottom can be met, and the shooting experience of the user in the process of using the large bottom to take a photo is improved without losing the pixels and imaging quality of the lens module.

[0150] In the embodiments of the present disclosure, the imaging height of the lens module can refer to the image height after the light passes through the lens module and is imaged on the image sensor.

[0151] Here, the size of the image sensor of the camera in the electronic device with the lens module is large, that is, large bottom, and the imaging height of the corresponding lens module in the image sensor is also large; for example, the imaging height of the lens module in the image sensor is greater than or equal to 12 mm, so that more light can be captured, and better imaging effect can be achieved in a low-light environment.

[0152] In some embodiments, the ratio between the total optical length of the lens module and the imaging height of the lens module is less than or equal to 1.37. Thus, by configuring the first lens group, the third lens group, and the second lens group in the lens module, the ratio between the total optical length of the lens module and the imaging height of the lens module can be made less than or equal to 1.37, thereby enabling better miniaturization of the lens module.

[0153] In this embodiment of the disclosure, the total track length (TTL) of the lens module can refer to the distance between the object side of the first lens in the lens module and the image plane of the lens module.

[0154] It is understandable that the ratio between the total optical length of the lens module and the imaging height of the lens module can be used to characterize the space occupied by the lens module in the electronic device. That is, the smaller the ratio between the total optical length of the lens module and the imaging height of the lens module, the more miniaturized the lens module can be.

[0155] For example, such as Figure 3a As shown, Figure 3a A distortion curve is shown when the lens module is in wide-angle mode. The horizontal axis of the curve represents the distortion parameters when the lens module is in wide-angle mode, and the vertical axis represents the imaging height when the lens module is in wide-angle mode. Figure 3b As shown, Figure 3b The diagram illustrates a distortion curve when the lens module is in a medium-telephoto mode. The horizontal axis of the curve represents the distortion parameters when the lens module is in this mode, and the vertical axis represents the imaging height. Figure 3c As shown, Figure 3c A distortion curve is shown when the lens module is in telephoto mode. The horizontal axis of the distortion curve represents the distortion parameters when the lens module is in telephoto mode, and the vertical axis represents the imaging height when the lens module is in telephoto mode.

[0156] like Figure 4a As shown, Figure 4a The diagram illustrates a spherical aberration curve when the lens module is in wide-angle mode. The horizontal axis of the curve represents the focal length of the lens module in wide-angle mode, and the vertical axis represents the longitudinal spherical aberration. Figure 4a It can reflect the level of optical distortion of the lens when it is in wide-angle mode; Figure 4a The curves with different shapes can represent the mapping relationship between the focal length and longitudinal spherical aberration of the lens module under different wavelengths of incident light in wide-angle mode. For example... Figure 4b As shown, Figure 4bA spherical aberration curve diagram of the lens module in the medium-long focal state is shown, the abscissa of the spherical aberration curve diagram identifies the focal length of the lens module in the medium-long focal state, and the ordinate identifies the longitudinal spherical aberration of the lens module in the medium-long focal state, Figure 4b The optical distortion level of the lens in the medium-long focal state can be reflected. Figure 4b The curves identified by different shapes in the medium-long focal state can be the mapping relationship between the focal length and the longitudinal spherical aberration of the lens module under different wavelengths of incident light rays in the medium-long focal state. As Figure 4c shown, Figure 4c A spherical aberration curve diagram of the lens module in the long focal state is shown, the abscissa of the spherical aberration curve diagram identifies the focal length of the lens module in the long focal state, and the ordinate identifies the longitudinal spherical aberration of the lens module in the long focal state, Figure 4c The optical distortion level of the lens in the long focal state can be reflected. Figure 4c The curves identified by different shapes in the long focal state can be the mapping relationship between the focal length and the longitudinal spherical aberration of the lens module under different wavelengths of incident light rays in the long focal state.

[0157] As Figures 5a-5c shown, Figure 5a A diffraction modulation schematic diagram of the lens module in the wide-angle state is shown, Figure 5b A diffraction modulation schematic diagram of the lens module in the medium-long focal state is shown, Figure 5c A diffraction modulation schematic diagram of the lens module in the long focal state is shown. Figures 5a-5c The lines identified by different shapes in the medium-long focal state can refer to the mapping relationship between the spatial frequency and the diffraction modulation transfer function (MTF) of the lens module under different fields of view or different imaging heights of the lens module. The spatial frequency is a parameter for describing the speed of spatial variation of light intensity in an image, and the MTF is an index for measuring the ability of the lens module to transfer various frequency sine objects. From Figures 5a-5c It can be seen from the medium-long focal state that the imaging performance and quality of the lens module are different under different fields of view or different imaging heights of the lens module.

[0158] In the related art, as Figure 6As shown, the conventional lens module 20 can include, in order from the object side to the image side, i.e., the imaging surface 25, a light guide element 21, a first lens group 22, a second lens group 23, and a third lens group 24; wherein the first lens group 22 can include two lenses, the second lens group 23 can include three lenses, and the third lens group 24 can include two lenses. The conventional lens module 20 achieves an optimal balance state during zooming by limiting the relationship between the radii of curvature of the lenses, which is conducive to achieving a large zoom ratio to realize continuous zooming design from the mid focal point to the long focal point; and the conventional lens module 20 can meet 3≤FNO≤5, which does not meet the current design requirements for large base and large aperture optical lenses.

[0159] Based on this, the lens module provided by the embodiments of the present disclosure can sequentially arrange a first lens group, a third lens group, and a second lens group between the object surface end and the image surface end arranged along the optical axis direction in the lens module, and the third lens group can move along the optical axis direction between the first lens group and the second lens group, so as to change the focal length of the lens module by changing the distance between the first lens group and the third lens group and the distance between the third lens group and the second lens group, thereby better realizing the continuous zooming function of the lens module from the wide-angle state to the long focal state, improving the user experience of using the electronic device in which the lens module is located to take pictures; and while meeting the design requirements of large base and large aperture, the miniaturization of the lens module can be better realized.

[0160] The electronic device provided by the embodiments of the present disclosure can at least include the lens module provided by the above-mentioned embodiments of the present disclosure.

[0161] The electronic device can include a mobile phone, a tablet computer, a smart watch, a digital camera, a head-mounted display device (HMD), and the like, and the embodiments of the present disclosure are not limited thereto.

[0162] In the embodiments of the present disclosure, the electronic device can further include a housing and an image sensor located in the housing, and the lens module can be located in the housing, and the image surface end of the lens module is connected to the image sensor, i.e., light can be imaged in the image sensor through the lens module.

[0163] The electronic device provided by the embodiment of the present disclosure can sequentially arrange the first lens group, the third lens group and the second lens group between the object plane end and the image plane end arranged along the optical axis direction in the lens module, and the third lens group can move between the first lens group and the second lens group, so that the focal length of the lens module can be changed by changing the distance between the first lens group and the third lens group and the distance between the third lens group and the second lens group, thereby better realizing the continuous zoom function of the lens module and improving the experience of the user using the electronic device for shooting.

[0164] Figure 7 is a structural block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 700 can be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, etc.

[0165] Referring to Figure 6 , the electronic device 700 can include one or more of the following components: a processing component 702, a memory 704, a power supply component 706, a multimedia component 708, an audio component 710, an input / output (I / O) interface 712, a sensor component 714, and a communication component 716.

[0166] The processing component 702 usually controls the overall operation of the electronic device 700, such as operations associated with display, telephone call, data communication, camera operation and recording operation. The processing component 702 can include one or more processors 720 to execute instructions to complete all or part of the steps of the above-mentioned methods. In addition, the processing component 702 can include one or more modules to facilitate interaction between the processing component 702 and other components. For example, the processing component 702 can include a multimedia module to facilitate interaction between the multimedia component 708 and the processing component 702.

[0167] The memory 704 is configured to store various types of data to support operations of the electronic device 700. Examples of such data include at least one of instructions for any application or method operating on the electronic device 700, contact data, phonebook data, messages, pictures, and videos. The memory 704 can be implemented by any type of volatile or nonvolatile memory, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, a magnetic disc, or an optical disc.

[0168] The power component 706 supplies power to various components of the electronic device 700. The power component 706 can include at least one of a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 700.

[0169] The multimedia component 708 includes a screen providing an output interface between the electronic device 700 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes the touch panel, the screen can be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense a touch, a slide, and a gesture on the touch panel. The touch sensor can not only sense a boundary of a touching or a sliding action, but also detect duration and pressure related to the touching or sliding action. In some embodiments, the multimedia component 708 includes a front camera and / or a back camera. When the electronic device 700 is in an operation mode, such as a photographing mode or a video mode, the front camera and / or the back camera can receive external multimedia data. Each of the front camera and the back camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0170] The audio component 710 is configured to output and / or input audio signals. For example, the audio component 710 includes a microphone (MIC) that is configured to receive an external audio signal when the electronic device 700 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 704 or transmitted via the communication component 716. In some embodiments, the audio component 710 also includes a speaker for outputting audio signals.

[0171] The I / O interface 712 provides an interface between the processing component 702 and peripheral interface modules, which can include a keyboard, a click wheel, buttons, and so on. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0172] The sensor component 714 includes one or more sensors for providing status assessments of various aspects of the electronic device 700. For example, the sensor component 714 can detect an open / closed position of the electronic device 700, relative positioning of components, such as a display and a keypad of the electronic device 700, a change in position of the electronic device 700 or a component of the electronic device 700, presence or absence of user contact with the electronic device 700, orientation or acceleration / deceleration of the electronic device 700, and temperature changes of the electronic device 700. The sensor component 714 can include a proximity sensor configured to detect presence of a nearby object without any physical touch. The sensor component 714 can also include a light sensor, such as a complementary metal oxide semiconductor (CMOS) or charge coupled device (CCD) image sensor, utilized in an imaging application. In some embodiments, the sensor component 714 can further include at least one of an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, and a temperature sensor.

[0173] The communication component 716 is configured to facilitate wired or wireless communication between the electronic device 700 and other devices. The electronic device 700 can access a wireless network based on a communication standard, such as Wi-Fi, 4G, 5G, or a combination thereof. In an example embodiment, the communication component 716 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an example embodiment, the communication component 716 also includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0174] In example embodiments, the electronic device 700 can be implemented with one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, or other electronic elements.

[0175] It is also noted that the terms "comprise", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0176] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

[0177] It should be understood that the present disclosure is not limited to the precise structures as herein described and illustrated in the drawings, and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A lens module, characterized in that, The lens module comprises: a subject plane end, an image plane end, a first lens group, a second lens group and a third lens group arranged along an optical axis direction; the first lens group is located between the subject plane end and the image plane end; the second lens group is located between the first lens group and the image plane end; the third lens group is located between the first lens group and the second lens group and can move along the optical axis direction between the first lens group and the second lens group to change the focal length of the lens module.

2. The lens module according to claim 1, wherein, the second lens group is movably arranged between the third lens group and the image plane end and can move along the optical axis direction between the third lens group and the image plane end; wherein the second lens group and the third lens group can move to change the focal length of the lens module.

3. The lens module according to claim 2, wherein, The distance between the third lens group and the second lens group is negatively correlated with the focal length of the lens module, and the distance between the second lens group and the image plane end is positively correlated with the focal length of the lens module.

4. The lens module according to claim 3, wherein, The distance between the third lens group and the second lens group ranges from 0.08 mm to 5.64 mm, and the distance between the second lens group and the image plane end ranges from 0.05 mm to 7.03 mm.

5. The lens module according to claim 3, wherein, When the distance between the first lens group and the third lens group ranges from 4.15 mm to 4.55 mm, the distance between the third lens group and the second lens group ranges from 5.24 mm to 5.64 mm, and the distance between the second lens group and the image plane end ranges from 0.05 mm to 0.35 mm, the lens module is in a wide-angle state; When the distance between the first lens group and the third lens group ranges from 4.56 mm to 4.96 mm, the distance between the third lens group and the second lens group ranges from 1.34 mm to 1.74 mm, and the distance between the second lens group and the image plane end ranges from 3.43 mm to 3.83 mm, the lens module is in a medium-long focus state; When the distance between the first lens group and the third lens group ranges from 2.73 mm to 3.13 mm, the distance between the third lens group and the second lens group ranges from 0.08 mm to 0.38 mm, and the distance between the second lens group and the image plane end ranges from 6.63 mm to 7.03 mm, the lens module is in a long focus state. 6.The lens module according to any one of claims 1-5, wherein, The first lens group is a fixed lens group; the third lens group comprises at least two lenses, and the second lens group comprises at least two lenses; When the third lens group moves, the at least two lenses in the third lens group can move along the optical axis direction between the first lens group and the second lens group; When the second lens group moves, the at least two lenses in the second lens group can move along the optical axis direction between the third lens group and the image plane end.

7. The lens module according to claim 6, wherein, The first lens group comprises a first lens, the at least two lenses in the third lens group comprise a second lens, a third lens and a fourth lens arranged in sequence from the object side to the image side, and the at least two lenses in the second lens group comprise a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens arranged in sequence from the object side to the image side; The first lens, the fourth lens, the eighth lens and the ninth lens are all meniscus lenses, the second lens is a plano-convex lens, the fifth lens and the sixth lens are both double-convex lenses, the third lens and the seventh lens are both double-concave lenses, and the tenth lens is a lens with an arch shape; the first lens, the fourth lens and the eighth lens are all curved towards the image side, the ninth lens and the tenth lens are both curved towards the object side, and the convex surface of the second lens faces the image side; And / or, The first lens, the third lens, the fifth lens, the sixth lens, the eighth lens and the tenth lens are all high-Abbe-number-rate materials, and the second lens, the fourth lens, the seventh lens and the ninth lens are all high-refractive-index materials.

8. The lens module according to claim 7, wherein, The first lens comprises a first surface facing the object side and a second surface facing the image side; The sum of the radii of curvature of the second surface and the first surface is a first radius of curvature, and the difference between the radius of curvature of the second surface and the radius of curvature of the first surface is a second radius of curvature; the ratio of the first radius of curvature to the second radius of curvature ranges from 2 to 5. 9.The lens module according to claim 6, wherein, The first lens group, the at least two lenses in the third lens group and the at least two lenses in the second lens group are all aspherical lenses. 10.The lens module according to claim 6, wherein, At least one lens in the first lens group, the third lens group and the second lens group is made of plastic, or at least one lens in the first lens group, the third lens group and the second lens group is made of glass. 11.The lens module according to any one of claims 1-5, wherein, The focal length range of the lens module is 28 mm to 72 mm. 12.The lens module according to any one of claims 1-5, wherein, The ratio of the focal length of the third lens group to the focal length of the second lens group ranges from -2 to -1.

7. 13.The lens module according to any one of claims 1-5, wherein, When the lens module is in a wide-angle state, the aperture value of the lens module is less than or equal to 1.8; When the lens module is in a medium-long focal state, the aperture value of the lens module is less than or equal to 2.5; When the lens module is in a long focal state, the aperture value of the lens module is less than or equal to 3.

5. 14.The lens module according to any one of claims 1-5, wherein, The imaging height of the lens module is greater than or equal to 12 mm.

15. The lens module according to claim 14, wherein, The ratio between the total optical length of the lens module and the imaging height of the lens module is less than or equal to 1.

37.

16. An electronic device, comprising: Comprise: The lens module according to any one of claims 1 to 15.

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