Optical lens, camera module and electronic equipment

Abstract

The invention relates to the field of optical lenses, in particular to an optical lens, a camera module and electronic equipment. The optical lens comprises an adjustable focal length assembly and a fixed focal length assembly which are arranged along a first direction; the adjustable focal length assembly comprises at least one adjustable focal length lens, the fixed focal length assembly comprises at least one shape fixed lens, the focal length of the optical lens of the electronic equipment is adjusted by adjusting the focal length of the adjustable focal length assembly, and different shooting requirements are met. Therefore, various shooting requirements can be realized only by using one group of lenses, and compared with a scheme in which multiple groups of lenses are needed in some schemes, the occupied area of the electronic equipment can be effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of optical lenses, and in particular to an optical lens, a camera module and an electronic device. Background Art

[0002] In recent years, the shooting function has become an essential function of many electronic devices (such as smart phones), and the lens that realizes the shooting function has become one of the essential components of electronic devices. In order to meet the different shooting needs of users, electronic devices often need to be equipped with lenses of different focal lengths, and each lens is installed in a different position of the electronic device, such as vertical arrangement or horizontal arrangement, etc., and the housing of the electronic device can be provided with a light hole corresponding to each lens, so as to facilitate the use of each lens for shooting. For example, in order to meet the needs of users to shoot outdoor scenery and other long-range scenes, general electronic devices need to be equipped with a wide-angle lens with a focal length of about 24-35mm. In order to meet the needs of users to shoot close-up scenes, it is generally necessary to carry a main camera lens with a focal length of about 35mm-70mm. This will result in more lens modules, which will take up a large amount of space in the electronic device. Summary of the Invention

[0003] In order to solve the problem that the lens modules are too numerous and occupy a large space in the electronic device, the embodiments of the present application provide an optical lens, a camera module and an electronic device.

[0004] In a first aspect, an embodiment of the present application provides an optical lens, comprising an adjustable focal length component and a fixed focal length component arranged along a first direction;

[0005] The adjustable focus component includes at least one adjustable focus lens, the fixed focus component includes at least one shape-fixed lens, and when the at least one adjustable focus lens is in a first shape, the optical lens composed of the adjustable focus component and the fixed focus component has a first focal length, and the first focal length corresponds to the focal length of the first type of lens; when the at least one adjustable focus lens is in a second shape, the optical lens composed of the adjustable focus component and the fixed focus component has a second focal length, and the second focal length corresponds to the focal length of the second type of lens.

[0006] In this way, multiple shooting needs can be achieved with only one set of lenses. Compared with some solutions that require the use of multiple sets of lenses, it can effectively reduce the area occupied by the electronic device.

[0007] In a possible implementation of the first aspect above, the first type of lens includes a main camera lens, and the second type of lens includes a wide-angle lens.

[0008] In a possible implementation of the first aspect, the focal length of the adjustable-focus lens changes based on an applied voltage, and the focal length of the fixed-focus component is the focal length of the first type of lens; when at least one adjustable-focus lens is in a state where no voltage is applied, the at least one adjustable-focus lens is in a first shape, and the optical lens composed of the adjustable-focus component and the fixed-focus component has a first focal length, wherein the first shape is a planar shape; when at least one adjustable-focus lens is in a state where a first voltage is applied, the at least one adjustable-focus lens is in a second shape, and the optical lens composed of the adjustable-focus component and the fixed-focus component has a second focal length, wherein the second shape is a non-planar shape;

[0009] In a possible implementation of the first aspect above, the adjustable focus lens is a liquid lens, the shape of the liquid lens changes based on the applied voltage, and the focal length of the fixed focus component is the focal length of the second type of lens; when at least one adjustable focus lens is in a second voltage applied state, at least one adjustable focus lens is in a first shape, and the optical lens composed of the adjustable focus component and the fixed focus component has a first focal length, wherein the first shape is a non-planar shape; when at least one adjustable focus lens is in a non-voltage applied state, at least one adjustable focus lens is in a second shape, and the optical lens composed of the adjustable focus component and the fixed focus component has a second focal length, and the second shape is a planar shape.

[0010] In a possible implementation of the first aspect above, the fixed focal length assembly includes at least four solid-state lenses, wherein the first lens pointing from the image side to the object side of the at least four solid-state lenses has a negative optical focal length, and the second lens has a positive optical focal length.

[0011] In a possible implementation of the first aspect, the half field angle of the optical lens satisfies the following formula:

[0012] |HFOV1-HFOV2|>7

[0013] Among them, HFOV1 is the half field of view angle of the optical lens when the adjustable focus component is in the state of applying voltage; HFOV2 is the half field of view angle of the optical lens when the adjustable focus component is in the state of not applying voltage.

[0014] When |HFOV1-HFOV2|>7, it is beneficial for the electronic device to have different field of view angles in different states, which can meet different shooting requirements.

[0015] In a possible implementation of the first aspect above, the focal length of the optical lens satisfies the following formula:

[0016] f1 / f2>1.05

[0017] Wherein, f1 is the focal length of the optical lens when the adjustable focus component is in a voltage-applied state; f2 is the focal length of the optical lens when the adjustable focus component is in a voltage-unapplied state.

[0018] When f1 / f2 > 1.05 is satisfied, the optical lens can achieve a sufficient optical zoom ratio, enabling a single lens to meet the shooting requirements of different focal lengths and reducing costs.

[0019] In a possible implementation of the above first aspect, the focal length of the optical lens satisfies the following formula:

[0020] fa / f2 > 28

[0021] Where, fa is the focal length of the adjustable focus lens when the adjustable focus component is in the voltage-applied state; f2 is the focal length of the optical lens when the adjustable focus component is in the non-voltage-applied state.

[0022] When fa / f2 > 28 is satisfied, it is beneficial to adjust the system light, and the optical lens can have the ability to change the field angle when powered on.

[0023] In a possible implementation of the above first aspect, the optical lens satisfies the following formula: [[ID= nineteen]]

[0024] 1.4 < TTL / f2 < 2.7

[0025] Where, TTL is the distance from the object side surface of the first fixed shape lens along the object side to image side direction in the fixed focus component to the imaging surface corresponding to the optical lens on the optical axis, f2 is the focal length of the optical lens when the adjustable focus component is in the non-voltage-applied state; among them, the first fixed shape lens is the first fixed shape lens in the optical lens along the object side to image side direction.

[0026] When 1.4 < TTL / f2 < 2.7 is satisfied, it is beneficial for the optical imaging system to have good telephoto characteristics, and at the same time, it can better reduce the total length of the system to achieve miniaturization of the module.

[0027] In a possible implementation of the above first aspect, the optical lens satisfies the following formula:

[0028] [[ID=3 twenty]]1.0 < f1 / EPD1 < 2.5 <\

[0029] Where, f1 is the focal length of the optical lens when the adjustable focus component is in the voltage-applied state; EPD1 is the entrance pupil diameter of the optical lens when the adjustable focus component is in the voltage-applied state.

[0030] When 1.0 < f1 / EPD1 < 2.5 is satisfied, the optical lens can have an appropriate aperture size during the zoom process, avoiding reducing the imaging quality and helping to improve the illuminance of the imaging surface.

[0031] In a possible implementation of the above first aspect, |fl / fl - 1| satisfies the following formula:

[0032] |fl / fl-1| < 3.1

[0033] Where, f1 is the focal length of the first shape-fixed lens in the optical lens along the direction from the image side to the object side, and fl-1 is the focal length of the second shape-fixed lens in the optical lens along the direction from the image side to the object side.

[0034] When |fl / fl-1| < 3.1 is satisfied, it is beneficial to reasonably distribute the optical power of the last two lenses of the optical lens, enabling the light to be deflected reasonably before entering the image plane, thereby reducing the incident angle, correcting the system aberration, and improving the system imaging quality.

[0035] In a possible implementation of the above first aspect, the optical lens satisfies the following formula:

[0036] Imgh / TTL < 0.8

[0037] Where, Imgh is half of the diagonal length of the effective pixel area of the electronic photosensitive element on the imaging surface corresponding to the optical lens, and TTL is the distance from the object side surface of the first shape-fixed lens in the fixed focal length component along the direction from the object side to the image side to the imaging surface corresponding to the optical lens on the optical axis.

[0038] When Imgh / TTL < 0.8 is satisfied, it is beneficial to reduce the overall size of the optical lens while ensuring that the captured image has high pixels.

[0039] In a possible implementation of the above first aspect, the optical lens satisfies the following formula:

[0040] -2 < R21 / R22 * CT2 < 0

[0041] Where, R21 is the radius of curvature of the object side surface of the first shape-fixed lens in the fixed focal length component along the direction from the object side to the image side, R22 is the radius of curvature of the image side surface of the second shape-fixed lens in the fixed focal length component along the direction from the object side to the image side, and CT2 is the central thickness of the second shape-fixed lens in the fixed focal length component along the direction from the object side to the image side in the optical axis direction.

[0042] When -2 < R21 / R22 * CT2 < 0 is satisfied, the shape of the second shape-fixed lens along the direction from the object side to the image side can be effectively controlled, enabling the light passing through the first shape-fixed lens along the direction from the object side to the image side to be well transitioned to the subsequent lens group, correcting the aberration introduced by the first shape-fixed lens, and improving the imaging quality. [[ID=三十三]]<00000八十八>[[ID=三十四]]在上述第一方面一种可能的实现中,光学镜头满足以下公式:[[ID=三十五]]<00000八十九>[[ID=三十六]]<00000九十>[[ID=三十七]]0 < AT12 / ATL < 3[[ID=三十八]]<00000九十一>

[0045] Among them, AT12 is the distance between the first shape-fixed lens and the second shape-fixed lens on the optical axis in the fixed focal length component along the object side pointing to the image side, and ATL is the distance between the first shape-fixed lens and the second shape-fixed lens on the optical axis in the fixed focal length component along the image side pointing to the object side.

[0046] When 0 < AT12 / ATL < 3 is satisfied, by controlling the lens gap within a reasonable range, the field curvature of the inner and outer fields of the optical lens can be effectively guaranteed, and thus the off-axis field of the optical lens has good imaging quality.

[0047] In a possible implementation of the above first aspect, the optical lens satisfies the following formula:

[0048] 1.5 < (CT2 + CT3) / CTL < 3.7

[0049] Among them, CT2 is the central thickness of the second shape-fixed lens in the fixed focal length component along the object side pointing to the image side in the optical axis direction, CT3 is the central thickness of the third shape-fixed lens in the fixed focal length component along the object side pointing to the image side in the optical axis direction, and CTL is the central thickness of the first shape-fixed lens in the fixed focal length component along the image side pointing to the object side in the optical axis direction.

[0050] When 1.5 < (CT2 + CT3) / CTL < 3.7 is satisfied, by matching the central thickness of the second shape-fixed lens, the central thickness of the third shape-fixed lens, and the central thickness of the last shape-fixed lens along the object side pointing to the image side, it is beneficial to reduce the thickness sensitivity of the camera module and is beneficial to correcting the chromatic aberration of the optical camera module.

[0051] In a second aspect, an embodiment of the present application provides a camera module, including the optical lens according to any one of the first aspect.

[0052] In a third aspect, an embodiment of the present application provides an electronic device, including the camera module according to any one of the second aspect.

[0053] In a possible implementation of the above third aspect, the housing of the electronic device is provided with a protective lens, and the protective lens is used to protect the optical lens, and the protective lens is the first lens in the optical lens along the object side pointing to the image side. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1A A schematic diagram of the back of an electronic device is shown according to the present application;

[0055] Figure 1B A partial structural schematic diagram of an electronic device is shown according to the present application;

[0056] Figure 2A According to the first embodiment of the present application, a schematic structural diagram of the optical lens 10 in a powered-on state (a state where voltage is applied) is shown;

[0057] Figure 2B According to the first embodiment of the present application, a schematic structural diagram of the optical lens 10 in a power-off state (a state where no voltage is applied) is shown;

[0058] Figure 2C According to the first embodiment of the present application, a schematic diagram comparing the chromatic aberration correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0059] Figure 2D According to the first embodiment of the present application, a schematic diagram comparing the astigmatism correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0060] Figure 2E According to the first embodiment of the present application, a schematic diagram comparing the distortion correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0061] Figure 3A According to the second embodiment of the present application, a schematic structural diagram of the optical lens 10 in a powered-on state (a state where voltage is applied) is shown;

[0062] Figure 3B According to the second embodiment of the present application, a schematic structural diagram of the optical lens 10 in a power-off state (a state where no voltage is applied) is shown;

[0063] Figure 3C According to the second embodiment of the present application, a schematic diagram comparing the chromatic aberration correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0064] Figure 3D According to the second embodiment of the present application, a schematic diagram comparing the astigmatism correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0065] Figure 3E According to the second embodiment of the present application, a schematic diagram comparing the distortion correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0066] Figure 4A According to the third embodiment of the present application, a schematic structural diagram of the optical lens 10 in a powered-on state (a state where voltage is applied) is shown;

[0067] Figure 4B According to the third embodiment of the present application, a schematic structural diagram of the optical lens 10 in a power-off state (a state where no voltage is applied) is shown;

[0068] Figure 4CAccording to the third embodiment of the present application, a schematic diagram comparing the chromatic aberration correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0069] Figure 4D According to the third embodiment of the present application, a schematic diagram comparing the astigmatism correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0070] Figure 4E According to the third embodiment of the present application, a schematic diagram comparing the distortion correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0071] Figure 5A According to the fourth embodiment of the present application, a schematic structural diagram of the optical lens 10 in a powered-on state (a state in which voltage is applied) is shown;

[0072] Figure 5B According to the fourth embodiment of the present application, a schematic structural diagram of the optical lens 10 in a power-off state (a state where no voltage is applied) is shown;

[0073] Figure 5C According to the fourth embodiment of the present application, a schematic diagram comparing the chromatic aberration correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0074] Figure 5D According to the fourth embodiment of the present application, a schematic diagram comparing the astigmatism correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0075] Figure 5E According to the fourth embodiment of the present application, a schematic diagram comparing the distortion correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0076] Figure 6A According to the fifth embodiment of the present application, a schematic structural diagram of the optical lens 10 in a powered-on state (a state in which voltage is applied) is shown;

[0077] Figure 6B According to the fifth embodiment of the present application, a schematic structural diagram of the optical lens 10 in a power-off state (a state where no voltage is applied) is shown;

[0078] Figure 6C According to the fifth embodiment of the present application, a schematic diagram comparing the chromatic aberration correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0079] Figure 6D According to the fifth embodiment of the present application, a schematic diagram comparing the astigmatism correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0080] Figure 6EAccording to the fifth embodiment of the present application, a schematic diagram comparing the distortion correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0081] Figure 7A According to the sixth embodiment of the present application, a schematic structural diagram of the optical lens 10 in a powered-on state (a state where voltage is applied) is shown;

[0082] Figure 7B According to the sixth embodiment of the present application, a schematic structural diagram of the optical lens 10 in a power-off state (a state where no voltage is applied) is shown;

[0083] Figure 7C According to the sixth embodiment of the present application, a schematic diagram comparing the chromatic aberration correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0084] Figure 7D According to the sixth embodiment of the present application, a schematic diagram comparing the astigmatism correction performance of the optical lens 10 in the power-on state and the power-off state is shown;

[0085] Figure 7E According to the sixth embodiment of the present application, a schematic diagram comparing the distortion correction performance of the optical lens 10 in the power-on state and the power-off state is shown. DETAILED DESCRIPTION

[0086] Embodiments of the present application provide an optical lens, a camera module, and an electronic device.

[0087] For ease of understanding, the technical terms involved in this application are explained and described below.

[0088] Liquid lens, an optical element made of liquid wrapped in an elastic film, can be driven by voltage to change the shape of the liquid, thereby changing the radius of curvature of the lens and then changing the focal length of the lens. The liquid can be composed of a variety of media with different refractive indices.

[0089] Focal length: When light parallel to the principal optical axis passes through a single lens, the light converges to a point called the focus. The distance from the focus to the center of the lens (i.e., the optical center) is called the focal length.

[0090] The following uses two lenses as an example to explain how to calculate the focal length of a lens assembly. The focal length of the lens module consisting of the first lens and the second lens satisfies the following formula:

[0091]

[0092] Wherein, f is the focal length of the lens module consisting of the first lens and the second lens, f1 is the focal length of the first lens, f2 is the focal length of the second lens, and d is the distance between the center of the first lens and the center of the second lens.

[0093] It can be understood that in the camera module, if the distance between the lenses is relatively small, which can be approximately regarded as 0, the camera

[0094]

[0095] The focal length of the lens module composed of the first lens and the second lens in the imaging module satisfies the following formula:

[0096] It can be seen from the above formula that the focal length of the lens module is related to the focal length of each lens.

[0097] Aperture, also known as F-number (FNO), is a relative value calculated by dividing the focal length of a lens by the diameter of its entrance pupil (the inverse of the relative aperture). The smaller the aperture, the more light enters the image per unit time. The smaller the aperture, the smaller the depth of field, and the background in the photo will be blurred.

[0098] Total track length (TTL) refers to the total length from the object side of the lens closest to the object side of the optical lens to the imaging surface, and is the main factor in determining the height of the camera.

[0099] Image focal length (EFL), the effective focal length of an optical lens, is the distance from the center of the lens to the image focus.

[0100] The dispersion coefficient, also known as the Abbe number, is an index used to indicate the dispersion ability of a transparent medium. Generally speaking, the larger the refractive index of the medium, the smaller the Abbe number and the more severe the dispersion; conversely, the smaller the refractive index of the medium, the larger the Abbe number and the less severe the dispersion.

[0101] The object side, with the lens as the boundary, is the side where the scene to be imaged is located.

[0102] The image side is the side where the image of the scene to be imaged is located, with the lens as the boundary.

[0103] Image height (ImgH) is half the diagonal length of the effective pixel area on the photosensitive chip, that is, the image height of the imaging surface.

[0104] Entrance Pupil Diameter (EPD) refers to the ratio of the focal length of an optical lens to the aperture F value.

[0105] In optical instruments, the field of view (FOV) is the angle between the two edges of the maximum range through which the image of the measured object can pass through the lens, with the lens as the vertex. The size of the field of view determines the field of view of the optical instrument. The larger the field of view, the larger the field of view and the smaller the optical magnification.

[0106] Half field of view (HFOV), half of the field of view.

[0107] Aberration refers to the deviation between the imaging result in an actual optical system and the ideal imaging condition. Aberrations include field curvature, astigmatism, distortion, chromatic aberration, etc.

[0108] The technical solutions in the embodiments of the present application will be described clearly and in detail below with reference to the accompanying drawings.

[0109] It can be understood that the electronic devices mentioned in the embodiments of the present application can be mobile phones, digital tablets, laptops, cameras, video recorders, cameras, smart TVs, network monitoring equipment, somatosensory game consoles, driving recorders, reversing development devices, wearable electronic devices, small drones, three-dimensional image capture devices or other forms of devices with photo or video functions.

[0110] As mentioned above, in order to meet the different shooting needs of users, electronic devices often need to be equipped with lens modules of different focal lengths, which is understandable. The following uses mobile phone 100 as an example to introduce the partial structure of an electronic device equipped with a main camera lens module and a wide-angle lens module.

[0111] See also Figure 1A , Figure 1A 1 is a schematic diagram of the back of a mobile phone 100 shown in this application. Mobile phone 100 includes a main camera lens module (not shown), a wide-angle lens module (not shown), and a housing 10. Housing 10 is provided with a vertically arranged light hole 11 and a light hole 12. The light incident side of the main camera lens module is arranged opposite to the light hole 11 of the housing 10 so that light can enter the main camera lens module through the light hole 11. The light incident side of the wide-angle lens module is arranged opposite to the light hole 12 of the housing 10 so that light can enter the wide-angle lens module through the light hole 12.

[0112] It can be understood that the above-mentioned electronic device including a main camera lens module and a wide-angle lens module is only an exemplary illustration. In some schemes, the electronic device can also be equipped with an ultra-wide-angle lens module, a telephoto lens module, etc. In this way, the lens module will occupy a larger volume of the electronic device.

[0113] In order to solve the problem that the lens modules mentioned above are relatively large and occupy a large space in the electronic device, an embodiment of the present application provides an optical lens that can meet multiple shooting requirements through one lens module. The lens module in the present application can be composed of an adjustable focus component and a fixed focus component, wherein the adjustable focus component is composed of one or more adjustable focus lenses, and the adjustable focus lenses can be liquid lenses, T-lens (T-type lens) lenses or other lenses with adjustable focal lengths. The fixed focus component is composed of one or more lenses with fixed shapes. In this way, the focal length of the optical lens of the electronic device can be adjusted by adjusting the focal length of the adjustable focus component to meet different shooting requirements. For example, in different shooting scenarios, the shape of the liquid lens in the adjustable focus assembly can be made into different shapes by applying voltage, so that the focal length of the adjustable focus assembly is different, and the focal length of the entire optical lens meets different shooting requirements. For example, if the shooting scene requires the use of a wide-angle lens, the focal length of the entire optical lens is made to meet the focal length of the wide-angle lens; if the shooting scene requires the use of a main camera lens, the focal length of the entire optical lens is made to meet the focal length of the main camera lens.

[0114] In this way, multiple shooting needs can be achieved with only one set of lenses. Compared with some solutions that require the use of multiple sets of lenses, it can effectively reduce the area occupied by the electronic device.

[0115] The one or more adjustable focus lenses of the adjustable focus assembly and the one or more fixed-shape lenses of the fixed focus assembly are arranged along a first thickness direction. The first direction may be from the object side to the image side. When the optical lens is installed in an electronic device, the first direction may be the thickness direction of the electronic device.

[0116] It is understood that the electronic device can apply different voltages to each adjustable focus lens in the adjustable focus assembly, so that each adjustable focus lens has a different shape, so that the focal length corresponding to the adjustable focus assembly is different, and further make the focal length of the optical lens conform to the focal length of different types of lenses, such as the main camera lens, wide-angle lens, telephoto lens, etc.

[0117] For example, in some embodiments, the at least one adjustable focus lens is in a first shape, and the optical lens composed of the adjustable focus component and the fixed focus component has a first focal length, the first focal length corresponding to the focal length of a first type of lens, and the first type of lens includes a primary camera lens;

[0118] At least one adjustable focus lens is in the second shape, and the optical lens composed of the adjustable focus component and the fixed focus component has a second focal length, which corresponds to the focal length of a second type of lens, and the second type of lens includes a wide-angle lens.

[0119] In some embodiments, the focal length of the fixed focal length assembly can correspond to the focal length of any type of lens.

[0120] For example, when the focal length of the fixed focus component matches the focal length of the main camera lens module, and each adjustable focus lens is in a state where no voltage is applied, each adjustable focus lens is in a first shape, and the optical lens composed of the adjustable focus component and the fixed focus component has a first focal length, wherein the first shape is a planar shape; when the adjustable focus lens is in a state where a first voltage is applied, at least one adjustable focus lens is in a second shape, and the optical lens composed of the adjustable focus component and the fixed focus component has a second focal length, wherein the second shape is a non-planar shape;

[0121] It will be appreciated that in some embodiments, different voltages may be applied to each adjustable focus lens in the adjustable focus assembly, so that each adjustable focus lens has a different non-planar shape. For example, the optical parameters of each adjustable focus lens may differ, such as different focal lengths, thicknesses, refractive indices, etc. That is, the first voltage mentioned in this application may refer to a group of different voltages, a group of the same voltages, or a single voltage, and the second voltage may refer to a group of different voltages, a group of the same voltages, or a single voltage. A non-planar shape may refer to any shape with a focal length other than zero, such as a convex or concave shape.

[0122] That is, when the main camera lens is required to shoot, the adjustable focus assembly can be controlled to be in a power-off state (i.e., no voltage is applied), so that the adjustable focus lenses of the adjustable focus assembly are all flat lenses. At this time, the focal length of the adjustable focus assembly is 0, and the focal length of the optical lens is the focal length of the main camera lens. When other types of lenses are required to shoot, a preset voltage (e.g., a first voltage) is applied to the adjustable focus lenses in the adjustable focus assembly to change the focal length of the adjustable focus assembly, thereby making the combined focal length of the adjustable focus assembly and the fixed focus assembly conform to the focal length of the other types of lenses. For example, when a wide-angle lens is required to shoot, a preset voltage is applied to each adjustable focus lens in the adjustable focus assembly to make each adjustable focus lens of the adjustable focus assembly any non-flat shape set according to actual needs, or a combination of flat and non-flat shapes, etc., so that the focal length of the adjustable focus assembly changes, thereby making the combined focal length of the adjustable focus assembly and the fixed focus assembly conform to the focal length of the wide-angle lens.

[0123] For example, when the focal length of the fixed focal length component matches the focal length of the wide-angle lens module, when at least one adjustable focal length lens is in a second voltage applied state, at least one adjustable focal length lens is in a first shape, and the optical lens composed of the adjustable focal length component and the fixed focal length component has a first focal length, wherein the first shape is a non-planar shape; when each adjustable focal length lens is in a no voltage applied state, each adjustable focal length lens is in a second shape, and the optical lens composed of the adjustable focal length component and the fixed focal length component has a second focal length, and the second shape is a planar shape.

[0124] That is, when a wide-angle lens is required for shooting, the adjustable focus assembly can be controlled to be in a power-off state (i.e., no voltage is applied), and the adjustable focus lenses of the adjustable focus assembly are all plane-shaped lenses. At this time, the focal length of the adjustable focus assembly is 0, and the focal length of the optical lens is the focal length of the wide-angle lens. When other types of lenses are required for shooting, a preset voltage is applied to the adjustable focus lenses in the adjustable focus assembly, so that the focal length of the adjustable focus assembly changes, and then the combined focal length of the adjustable focus assembly and the fixed focus assembly conforms to the focal length of other types of lenses. For example, when the main camera lens is required for shooting, a preset voltage (such as a second voltage) is applied to the adjustable focus lenses in the adjustable focus assembly, so that each adjustable focus lens of the adjustable focus assembly is any non-planar shape set according to actual needs, or a combination of planar shapes and non-planar shapes, etc., so that the focal length of the adjustable focus assembly changes, and then the combined focal length of the adjustable focus assembly and the fixed focus assembly conforms to the focal length of the main camera lens.

[0125] It should be noted that the non-planar shape of the adjustable focus lens mentioned in the embodiments of the present application may refer to a shape in which at least one of the surfaces of the adjustable focus lens is non-planar and has a certain curvature, and the focal length of the adjustable focus lens is not zero. The planar shape of the adjustable focus lens mentioned in the embodiments of the present application may refer to a shape in which all surfaces of the adjustable focus lens are planar and the focal length of the adjustable focus lens is zero.

[0126] The following uses mobile phone 100 as an example to introduce some structures of an electronic device equipped with the optical lens mentioned in this application.

[0127] Figure 1B A partial structural diagram of a mobile phone 100 equipped with the optical lens mentioned in this application is shown.

[0128] See also Figure 1B , Figure 1B 1 is a schematic diagram of the back of a mobile phone 100 shown in this application. The mobile phone 100 includes the optical lens (not shown) mentioned in this application and a housing 20. The housing 20 is provided with a light hole 21. The light incident side of the optical lens is arranged opposite to the light hole 21 of the housing 20 so that light can enter the optical lens through the light hole 21.

[0129] The structure of the camera module 1 and the setting of related optical parameters are described in detail below with reference to the accompanying drawings.

[0130] refer to Figure 2AThe camera module includes an optical lens 10 and a photosensitive element 20. Light from the scene passes through the optical lens 10 to form a clear image on the imaging surface, and the image of the scene is recorded by the photosensitive element 20 located on the imaging surface. The imaging surface refers to the plane where the image of the scene is located after the scene is imaged by the optical lens 10. The optical lens 10 includes a plurality of lenses arranged in sequence from the object side to the image side, and the lenses cooperate to form an image with a better imaging effect. The object side refers to the side where the photographed scene is located, and the image side refers to the side where the imaging surface is located.

[0131] The camera module 1 may further include an infrared filter 30, which may be fixed to the circuit board and located between the optical lens 10 and the photosensitive element 20. It is understood that the light passing through the optical lens 10 is irradiated onto the infrared filter 30 and is transmitted to the photosensitive element 20 through the infrared filter 30.

[0132] The optical lens 10 includes an adjustable focus component and a fixed focus component, and the adjustable focus component and the fixed focus component are arranged along a first direction; the adjustable focus component includes one or more adjustable focus lenses; when the adjustable focus component is in a powered-on state, the focal length of the optical lens 10 composed of the adjustable focus component and the fixed focus component is a first focal length; when the adjustable focus component is in a powered-off state, the focal length of the optical lens 10 composed of the adjustable focus component and the fixed focus component is a second focal length, and the second focal length is the same as the focal length of the fixed focus component.

[0133] Optionally, the adjustable focus assembly may include one or two adjustable focus lenses, and the fixed focus assembly may further include at least four lenses, wherein the second lens on the image side in the second lens group has positive focal power, and the first lens on the image side has negative focal power.

[0134] For example, Figure 2A As shown, the adjustable focal length assembly may include a first adjustable focal length lens H1, and the fixed focal length assembly may include four lenses: a first lens L1, a second lens L2, a third lens L3, and a fourth lens L4.

[0135] In other optional embodiments, the adjustable focus component may include an adjustable focus lens, and the fixed focus component may include six lenses.

[0136] In other optional embodiments, the adjustable focus component may include an adjustable focus lens, and the fixed focus component may include five lenses.

[0137] In other optional embodiments, the adjustable focus component may include an adjustable focus lens, and the fixed focus component may include seven lenses.

[0138] In other optional embodiments, the adjustable focus assembly may include two adjustable focus lenses, and the fixed focus assembly may include six lenses.

[0139] It can be understood that the above-mentioned settings of each lens module are only exemplary and can be set to other settings according to actual needs, which is not limited in this application.

[0140] In the embodiment of the present application, the adjustable focus assembly plays a core zoom role. The present application satisfies different shooting requirements by limiting the focal length of at least one lens surface in the adjustable focus assembly.

[0141] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0142] |HFOV1-HFOV2|≥7

[0143] Among them, HFOV1 is the half field of view angle of the optical lens when the adjustable focus component is in the state of applying voltage; HFOV2 is the half field of view angle of the optical lens when the adjustable focus component is in the state of not applying voltage.

[0144] It can be understood that when |HFOV1-HFOV2|≥7, it is beneficial for the electronic device to have different field of view angles in different states and to meet different shooting requirements.

[0145] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0146] f1 / f2>1.05

[0147] Wherein, f1 is the focal length of the optical lens when the adjustable focus component is in a voltage-applied state; f2 is the focal length of the optical lens when the adjustable focus component is in a voltage-unapplied state.

[0148] It can be understood that when f1 / f2>1.05, the optical lens can achieve a sufficient optical zoom ratio, enabling one lens to meet the shooting needs of different focal lengths and reduce costs.

[0149] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0150] fa / f2>28

[0151] Wherein, fa is the focal length of the adjustable focus lens when the adjustable focus component is in a voltage-applied state; f2 is the focal length of the optical lens when the adjustable focus component is in a non-voltage-applied state.

[0152] It can be understood that when fa / f2>28 is satisfied, it is beneficial to adjust the system light and can enable the optical lens 10 to have the ability to change the field of view angle when powered on.

[0153] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0154] 1.4 < TTL / f2 < 2.7

[0155] Wherein, TTL is the distance from the object side surface of the first shape-fixed lens along the direction from the object side to the image side in the fixed focal length component to the imaging surface corresponding to the optical lens on the optical axis, and f2 is the focal length of the optical lens when the adjustable focal length component is in the non-applied voltage state; wherein, the first shape-fixed lens is the first shape-fixed lens in the optical lens along the direction from the object side to the image side.

[0156] When 1.4 < TTL / f2 < 2.7 is satisfied, it is beneficial to enable the optical imaging system to have good telephoto characteristics, and at the same time, it is better to reduce the total length of the system to achieve miniaturization of the module.

[0157] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0158] 1.0 < f1 / EPD1 < 2.5

[0159] Wherein, f1 is the focal length of the optical lens when the adjustable focal length component is in the applied voltage state; EPD1 is the entrance pupil diameter of the optical lens when the adjustable focal length component is in the applied voltage state.

[0160] It can be understood that when 1.0 < f1 / EPD1 < 2.5 is satisfied, the optical lens can have an appropriate aperture size during the zooming process, avoid reducing the imaging quality, and help to improve the illuminance of the imaging surface.

[0161] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0162] |fl / fl-1| < 3.1

[0163] Wherein, fl is the focal length of the first shape-fixed lens in the optical lens along the direction from the image side to the object side, and fl-1 is the focal length of the second shape-fixed lens in the optical lens along the direction from the image side to the object side.

[0164] It can be understood that when |fl / fl-1| < 3.1 is satisfied, it is beneficial to reasonably distribute the optical power of the last two lenses of the optical lens, and the light can be reasonably deflected before entering the image plane to reduce the incident angle, correct the system aberration, and improve the system imaging quality.

[0165] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0166] Imgh / TTL < 0.8

[0167] Where, Imgh is half of the diagonal length of the effective pixel area of the electronic photosensitive element on the imaging surface corresponding to the optical lens, and TTL is the distance from the object side surface of the first fixed-shaped lens along the object side to image side direction in the fixed focal length component to the imaging surface corresponding to the optical lens on the optical axis.

[0168] When Imgh / TTL < 0.8 is satisfied, it is beneficial to reduce the overall size of the optical lens while ensuring that the captured image has high pixels.

[0169] According to some embodiments, the optical lens 10 satisfies the following relational expression:

[0170] -2 < R21 / R22 * CT2 < 0

[0171] Where, R21 is the radius of curvature of the object side surface in the fixed focal length component, R22 is the radius of curvature of the image side surface of the second fixed-shaped lens along the object side to image side direction in the fixed focal length component, and CT2 is the central thickness of the second fixed-shaped lens along the object side to image side direction in the fixed focal length component in the optical axis direction.

[0172] When -2 < R21 / R22 * CT2 < 0 is satisfied, the shape of the second fixed-shaped lens along the object side to image side direction can be effectively controlled, enabling the light passing through the first fixed-shaped lens along the object side to image side direction to transition well to the subsequent lens groups, correcting the aberration introduced by the first fixed-shaped lens, and improving the imaging quality.

[0173] According to some embodiments, the optical lens 10 satisfies the following relational expression:

[0174] 0 < AT12 / ATL < 3

[0175] Where, AT12 is the distance between the first fixed-shaped lens and the second fixed-shaped lens along the object side to image side direction in the fixed focal length component on the optical axis, and ATL is the distance between the first fixed-shaped lens and the second fixed-shaped lens along the image side to object side direction in the fixed focal length component on the optical axis.

[0176] When 0 < AT12 / ATL < 3 is satisfied, by controlling the lens gap within a reasonable range, the field curvature of the inner and outer fields of the optical lens can be effectively ensured, and thus the off-axis field of the optical lens has good imaging quality.

[0177] According to some embodiments, the optical lens 10 satisfies the following relational expression:

[0178] 1.5 < (CT2 + CT3) / CTL < 3.7

[0179] Among them, CT2 is the center thickness of the second shape-fixed lens in the fixed focal length assembly along the object side pointing to the image side in the optical axis direction, CT3 is the center thickness of the third shape-fixed lens in the fixed focal length assembly along the object side pointing to the image side in the optical axis direction, and CTL is the center thickness of the first shape-fixed lens in the fixed focal length assembly along the image side pointing to the object side in the optical axis direction.

[0180] When 1.5<(CT2+CT3) / CTL<3.7 is satisfied, by matching the center thickness of the second shape-fixed lens pointing from the object side to the image side, the center thickness of the third shape-fixed lens, and the center thickness of the last shape-fixed lens, it is beneficial to reduce the thickness sensitivity of the camera module and correct the chromatic aberration of the optical camera module.

[0181] It is understood that the above-mentioned different limitations on different parameters of the optical lens 10 can exist independently of each other or can be combined with each other. When all the above-mentioned limiting values ​​are combined with each other, the optical lens 10 can have better imaging quality.

[0182] I understand. Figure 2A Only some components of the camera module 1 are shown schematically, and the actual shape, size and structure of these components are not affected by the actual shape, size and structure of the camera module 1. Figure 2A limited.

[0183] The optical lens 10 provided in this application is described in detail below in conjunction with Examples 1 to 6. The focal length of the fixed-focus component in Examples 1 to 6 corresponds to the focal length of a wide-angle lens. Furthermore, in Examples 1 to 6, the adjustable-focus lens is described as a liquid lens, and the fixed-shape lens is a lens. It should be noted that the adjustable-focus lens can be a liquid lens, a T-lens lens, or other lenses with adjustable focal lengths, and this application does not limit this.

[0184] Example 1

[0185] Figure 2A The schematic diagram of the structure of the optical lens 10 in the power-on state (voltage applied state) in Example 1 of the present application is shown. The optical lens 10 includes an adjustable focus component and a fixed focus component. Specifically, the adjustable focus component and the fixed focus component are arranged in sequence from the object side to the image side, wherein the adjustable focus component includes a first liquid lens H1, and the fixed focus component may include a first lens L1, a second lens L2, a third lens L3 and a fourth lens L4. Figure 2A As can be seen from FIG, in the power-on state, the first liquid lens H1 is in a non-planar shape.

[0186] Figure 2BFIG. 1 shows a schematic diagram of the structure of the optical lens 10 in the power-off state (no voltage applied) in Example 1 of the present application. Figure 2B As shown, in the power-off state, the first liquid lens H1 is in a flat shape. The focal length of the optical lens 10 is the same as the focal length of the fixed focal length component.

[0187] The optical design parameters of the optical lens 10 in the first embodiment of the present application are shown in Table 1, wherein Table 1 shows the surface type of each surface of each lens in the optical lens, the Y radius in the power-on state and the power-off state, the thickness of each surface, the refractive index of each surface, the Abbe number of each surface, the focal length of the adjustable focal length assembly, the focal length of each lens in the fixed focal length assembly, etc.

[0188] Table 1 Optical design parameters of the optical lens 10 in the first embodiment

[0189]

[0190]

[0191] In Table 1, the meanings of the symbols are as follows:

[0192] S1: first surface of the first liquid lens; S2: second surface of the first liquid lens; S3: third surface of the first liquid lens; S4: fourth surface of the first liquid lens; S5: fifth surface of the first liquid lens; S7: object-side surface of the first lens L1; S8: image-side surface of the first lens L1; S9: object-side surface of the second lens L2; ​​S10: image-side surface of the second lens L2; ​​S11: object-side surface of the third lens L3; S12: image-side surface of the third lens L3; S13: object-side surface of the fourth lens L4; S14: image-side surface of the fourth lens L4; S15: object-side surface of the infrared cut-off filter; S16: image-side surface of the infrared cut-off filter.

[0193] It can also be seen from Table 1 that when the adjustable focus assembly is in the power-on state (voltage applied state), the image side focal length EFL1 of the optical lens 10 is 2.40, the aperture value FNO1 is 1.97, the half field angle HFOV1 is 42°, and the total optical length TTL is 3.12; when the adjustable focus assembly is in the power-off state (no voltage applied state), the image side focal length EFL2 of the optical lens 10 is 2.07, the aperture value FNO2 is 1.98, and the half field angle HFOV2 is 51°.

[0194] The aspheric coefficients of the optical lens 10 in the first embodiment of the present application are shown in Table 2.

[0195] Table 2 Aspheric coefficients of the optical lens 10 in the first embodiment

[0196]

[0197]

[0198] Wherein, K represents the conic coefficient in the aspheric curve equation, and A4, A6, A8, A10, A12, A14, A16, and A18 represent the 4th, 6th, 8th, 10th, 12th, 14th, 16th, and 18th order aspheric coefficients of each surface. Surface numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14 correspond to the lens surfaces S1, S2, S3, S4, S5, stop, S7, S8, S9, S10, S11, S12, S13, and S14, respectively. It should be noted that the parameters in the table are expressed in scientific notation. In this application, symbols such as K, A4, A6, A8, A10, A12, A14, A16, and A18, unless otherwise explained, have the same meaning as herein and will not be repeated.

[0199] In the embodiment of the present application, the object-side surface of the first lens element L1 is convex at the near optical axis, and the image-side surface is concave at the near optical axis; the object-side surface of the second lens element L2 is concave at the near optical axis, and the image-side surface is convex at the near optical axis; the object-side surface of the third lens element L3 is concave at the near optical axis, and the image-side surface is convex at the near optical axis; the object-side surface of the fourth lens element L4 is convex at the near optical axis, and the image-side surface is concave at the near optical axis.

[0200] The refractive power of the first lens L1 is positive, the refractive power of the second lens L2 is negative, the refractive power of the third lens L3 is positive, and the refractive power of the fourth lens L4 is negative.

[0201] In the embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the half field of view angle HFOV1 = 42°, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the half field of view angle HFOV2 = 51°, |HFOV1-HFOV2| = 9°.

[0202] In an embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the focal length of the optical lens f1 = 2.4; when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens f2 = 2.07, and f1 / f2 = 1.16.

[0203] In the embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the focal length of the adjustable focus lens fa = 367.26, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens f2 = 2.07, fa / f2 = 177.42.

[0204] In the embodiment of the present application, when the adjustable focus assembly is in the power-on state (voltage is applied), the distance TTL on the optical axis from the object side of the first shape-fixed lens (i.e., the first lens L1) pointing from the object side to the image side to the corresponding imaging surface of the optical lens is 3.12. When the adjustable focus assembly is in the power-off state (no voltage is applied), the focal length f2 of the optical lens is 2.07, and TTL / f2 is 1.51.

[0205] In the embodiment of the present application, when the adjustable focus component is in the power-on state (voltage applied state), the focal length f1 of the optical lens is 2.4, and when the adjustable focus component is in the voltage applied state, the entrance pupil diameter EPD1 of the optical lens is 1.22, and f1 / EPD1 is 1.97.

[0206] In this embodiment of the present application, when the adjustable focus assembly is powered on (voltage is applied), the focal length f1 of the first shape-fixed lens element (i.e., the fourth lens element L4) pointing from the image side toward the object side has a focal length f1=-3.8, the focal length f1-1 of the second shape-fixed lens element (i.e., the third lens element L3) pointing from the image side toward the object side has a focal length f1-1=2.45, and |fl / fl-1|=1.55.

[0207] In the embodiment of the present application, half of the diagonal length of the effective pixel area of ​​the electronic photosensitive element on the imaging surface corresponding to the optical lens, Imgh=2.4, the distance from the object side of the first shape-fixed lens (i.e., the first lens L1) pointing along the object side to the image side to the imaging surface corresponding to the optical lens on the optical axis, TTL=3.12, and Imgh / TTL=0.77.

[0208] In the embodiment of the present application, R21 / R22*CT2=-0.68, where R21 is the radius of curvature of the object side surface of the first shape-fixed lens element (i.e., the first lens element L1) in the fixed focal length assembly, which is directed from the object side to the image side; R22 is the radius of curvature of the image side surface of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side; and CT2 is the center thickness of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side, along the optical axis.

[0209] In the embodiment of the present application, the distance AT12 between the first shape-fixed lens element (i.e., the first lens L1) and the second shape-fixed lens element (i.e., the second lens element L2) along the object side toward the image side on the optical axis is equal to 0.21. The distance ATL between the first shape-fixed lens element (i.e., the fourth lens element L4) and the second shape-fixed lens element (i.e., the third lens element L3) along the image side toward the object side in the fixed focal length assembly along the optical axis is equal to 0.41. AT12 / ATL is equal to 0.51.

[0210] In this embodiment of the present application, (CT2+CT3) / CTL=2.38, where CT2 is the center thickness of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side, along the optical axis; CT3 is the center thickness of the third shape-fixed lens element (i.e., the third lens element L3) in the fixed focal length assembly, which is directed from the object side to the image side, along the optical axis; and CTL is the center thickness of the first shape-fixed lens element (i.e., the fourth lens element L4) in the fixed focal length assembly, which is directed from the image side to the object side, along the optical axis.

[0211] Figure 2C 、 Figure 2D 、 Figure 2E The optical performance of the optical lens 10 of the first embodiment is shown. Figure 2C 、 Figure 2D 、 Figure 2E The left figure in the figure represents the optical performance of the optical lens 10 in the power-on state (the state in which voltage is applied), and the right figure represents the optical performance of the optical lens 10 in the power-off state (the state in which voltage is not applied).

[0212] Figure 2C The figure shows the axial chromatic aberration of light with wavelengths of 470nm, 510nm, 555nm, 610nm, and 650nm respectively when passing through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state) in the first embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Figure 2C As can be seen from the comparison between the middle left and right figures, in this embodiment, the axial chromatic aberration of the optical lens 10 in the power-on state (the state with voltage applied) and the power-off state (the state without voltage applied) is controlled within a very small range.

[0213] Figure 2D The diagram shows the astigmatism of the light with a wavelength of 555 nm in the first embodiment when it passes through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state). The solid line is the astigmatism of the light with a wavelength of 555 nm after passing through the optical lens 10 in the meridional direction, and the dotted line is the astigmatism of the light with a wavelength of 555 nm after passing through the optical lens 10 in the sagittal direction. The ordinate is the image height, and the abscissa represents the astigmatism values ​​in the meridional direction (dotted line) and sagittal direction (solid line), and the unit is millimeters. Figure 2D As can be seen from the comparison between the left and right figures, in this embodiment, the astigmatism of the optical lens 10 in the power-on state (the state with voltage applied) and the power-off state (the state without voltage applied) is controlled within a very small range.

[0214] Figure 2EThe figure shows the distortion of light with a wavelength of 555nm in the first embodiment when it passes through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state). The ordinate is the image height, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Figure 2E As can be seen from the comparison between the left and right figures, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range in the power-on state (the state in which voltage is applied) and the power-off state (the state in which no voltage is applied).

[0215] Example 2

[0216] Figure 3A The schematic diagram of the structure of the optical lens 10 in the power-on state (the state of applying voltage) in Example 2 of the present application is shown. The optical lens 10 includes an adjustable focus component and a fixed focus component. Specifically, the adjustable focus component and the fixed focus component are arranged in sequence from the object side to the image side, wherein the adjustable focus component includes a first liquid lens H1, and the fixed focus component may include a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. Figure 3A As can be seen from FIG, in the power-on state, the first liquid lens H1 is in a non-planar shape.

[0217] Figure 3B FIG. 1 shows a schematic diagram of the structure of the optical lens 10 in the power-off state (no voltage applied) in Example 2 of the present application. Figure 3B As shown, in the power-off state, the first liquid lens H1 is in a flat shape. The focal length of the optical lens 10 is the same as the focal length of the fixed focal length component.

[0218] The optical design parameters of the optical lens 10 in the second embodiment of the present application are as follows:

[0219] Table 3 Optical design parameters of the optical lens 10 in the second embodiment

[0220]

[0221]

[0222] In Table 3 above, the meanings of the symbols are as follows:

[0223] S1: first surface of the first liquid lens; S2: second surface of the first liquid lens; S3: third surface of the first liquid lens; S4: fourth surface of the first liquid lens; S5: fifth surface of the first liquid lens; S7: object-side surface of the first lens L1; S8: image-side surface of the first lens L1; S9: object-side surface of the second lens L2; ​​S10: image-side surface of the second lens L2; ​​S11: object-side surface of the third lens L3; S12: image-side surface of the third lens L3; S13: object-side surface of the fourth lens L4; S14: image-side surface of the fourth lens L4; S15: object-side surface of the fifth lens L5;

[0224] S16: image-side surface of fifth lens L5; S17: object-side surface of sixth lens L6; S18: image-side surface of sixth lens L6; S19: object-side surface of infrared cut filter; S20: image-side surface of infrared cut filter.

[0225] In addition, it can be seen from Table 3 that when the adjustable focus assembly is in the power-on state (voltage applied state), the image side focal length EFL1 of the optical lens 10 is 2.93, the aperture value FNO1 is 2.25, the half field angle HFOV1 is 46°, and the total optical length TTL is 6.51; when the adjustable focus assembly is in the power-off state (no voltage applied state), the image side focal length EFL2 of the optical lens 10 is 2.71, the aperture value FNO2 is 2.29, and the half field angle HFOV2 is 53°.

[0226] Table 4-1 Aspheric coefficients of the optical lens 10 in the second embodiment

[0227]

[0228]

[0229] Table 4-2 Aspheric coefficients of the optical lens 10 in the second embodiment

[0230]

[0231]

[0232] Where K represents the conic coefficient in the aspheric curve equation, and A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 represent the 4th, 6th, 8th, 10th, 12th, 14th, 16th, 20th, 22nd, 24th, 26th, 28th, and 30th order aspheric coefficients of each surface. Surface numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, and 18 correspond to the lens surfaces S1, S2, S3, S4, S5, stop, S7, S8, S9, S10, S11, S12, S13, S14, S15, S16, S17, and S18, respectively.

[0233] In this embodiment of the present application, the object-side surface of the first lens element L1 is concave near the optical axis, and the image-side surface is convex near the optical axis; the object-side surface of the second lens element L2 is convex near the optical axis, and the image-side surface is convex near the optical axis; the object-side surface of the third lens element L3 is convex near the optical axis, and the image-side surface is concave near the optical axis; the object-side surface of the fourth lens element L4 is convex near the optical axis, and the image-side surface is concave near the optical axis; the object-side surface of the fifth lens element L5 is concave near the optical axis, and the image-side surface is convex near the optical axis; and the object-side surface of the sixth lens element L6 is convex near the optical axis, and the image-side surface is concave near the optical axis.

[0234] The focal power of the first lens L1 is negative, the focal power of the second lens L2 is positive, the focal power of the third lens L3 is negative, the focal power of the fourth lens L4 is negative, the focal power of the fifth lens L5 is positive, and the focal power of the sixth lens L6 is negative.

[0235] In the embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the half field of view angle HFOV1 = 46°, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the half field of view angle HFOV2 = 53°, and |HFOV1-HFOV2| = 7°.

[0236] In the embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the focal length of the optical lens f1 = 2.93, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens f2 = 2.71, f1 / f2 = 1.08.

[0237] In an embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the focal length of the adjustable focus lens fa=106.02, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens f2=2.71, fa / f2=39.12.

[0238] In an embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the distance TTL from the object side surface of the first shape-fixed lens pointing from the object side to the image side to the imaging surface corresponding to the optical lens on the optical axis is 6.51. When the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens is f2=2.71, and TTL / f2=2.40.

[0239] In the embodiment of the present application, when the adjustable focus component is in the power-on state (voltage applied state), the focal length f1 of the optical lens is 2.93, and when the adjustable focus component is in the voltage applied state, the entrance pupil diameter EPD1 of the optical lens is 1.3, and f1 / EPD1 is 2.25.

[0240] In this embodiment of the present application, when the adjustable focus assembly is powered on (voltage is applied), the focal length f1 of the first shape-fixed lens element (i.e., the sixth lens element L6) pointing from the image side toward the object side has a focal length f1=-2.13, the focal length f1-1 of the second shape-fixed lens element (i.e., the fifth lens element L5) pointing from the image side toward the object side has a focal length f1-1=1.48, and |fl / fl-1|=1.44.

[0241] In the embodiment of the present application, half of the diagonal length of the effective pixel area of ​​the electronic photosensitive element on the imaging surface corresponding to the optical lens, Imgh=3.35, the distance from the object side of the first shape-fixed lens (i.e., the first lens L1) pointing along the object side to the image side to the imaging surface corresponding to the optical lens on the optical axis, TTL=6.51, and Imgh / TTL=0.51.

[0242] In the embodiment of the present application, R21 / R22*CT2=-0.18, where R21 is the radius of curvature of the object side surface of the first shape-fixed lens element (i.e., the first lens element L1) in the fixed focal length assembly, which is directed from the object side to the image side; R22 is the radius of curvature of the image side surface of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side; and CT2 is the center thickness of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side, along the optical axis.

[0243] In this embodiment of the present application, the distance AT12 between the first shape-fixed lens element (i.e., the first lens L1) and the second shape-fixed lens element (i.e., the second lens element L2) along the object side toward the image side on the optical axis is 0.1, and the distance ATL between the first shape-fixed lens element (i.e., the sixth lens element L6) and the second shape-fixed lens element (i.e., the fifth lens element L5) along the image side toward the object side in the fixed focal length assembly along the optical axis is 0.05, and AT12 / ATL is 2.00.

[0244] In this embodiment of the present application, (CT2+CT3) / CTL=1.95, where CT2 is the center thickness along the optical axis of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side; CT3 is the center thickness along the optical axis of the third shape-fixed lens element (i.e., the third lens element L3) in the fixed focal length assembly, which is directed from the object side to the image side; and CTL is the center thickness along the optical axis of the first shape-fixed lens element (i.e., the sixth lens element L6) in the fixed focal length assembly, which is directed from the image side to the object side.

[0245] Figure 3C 、 Figure 3D 、 Figure 3E The optical performance of the optical lens 10 of the second embodiment is shown, wherein the left figure represents the optical performance of the optical lens 10 in the power-on state (the state in which voltage is applied), and the right figure represents the optical performance of the optical lens 10 in the power-off state (the state in which voltage is not applied).

[0246] Figure 3C The figure shows the axial chromatic aberration of light with wavelengths of 470nm, 510nm, 555nm, 610nm, and 650nm respectively when passing through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state) in the second embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Figure 3C As can be seen from the comparison between the middle left and right figures, in this embodiment, the axial chromatic aberration of the optical lens 10 in the power-on state (the state with voltage applied) and the power-off state (the state without voltage applied) is controlled within a very small range.

[0247] Figure 3D The figure shows the astigmatism of the light with a wavelength of 555nm in the second embodiment when it passes through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state). The solid line is the astigmatism of the light with a wavelength of 555nm passing through the optical lens 10 in the meridional direction, and the dotted line is the astigmatism of the light with a wavelength of 555nm passing through the optical lens 10 in the sagittal direction. The ordinate is the image height angle, and the abscissa represents the astigmatism values ​​in the meridional direction (dotted line) and sagittal direction (solid line), and the unit is millimeter. Figure 3D As can be seen from the comparison between the left and right figures, in this embodiment, the astigmatism of the optical lens 10 in the power-on state (the state with voltage applied) and the power-off state (the state without voltage applied) is controlled within a very small range.

[0248] Figure 3EThe figure shows the distortion of light with a wavelength of 555nm in the second embodiment when it passes through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state). The ordinate is the image height, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Figure 3E As can be seen from the comparison between the left and right figures, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range in the power-on state (the state in which voltage is applied) and the power-off state (the state in which no voltage is applied).

[0249] Therefore, by applying voltage to the adjustable optical lens 10, the focal length of the adjustable optical lens module is changed, so that the combined focal length of the adjustable optical lens module and the main camera lens module conforms to the focal length of the wide-angle lens, thereby meeting the demand for using a wide-angle lens.

[0250] Example 3

[0251] Figure 4A The schematic diagram of the structure of the optical lens 10 in the power-on state (voltage applied state) in Example 3 of the present application is shown. The optical lens 10 includes an adjustable focus component and a fixed focus component. Specifically, the adjustable focus component and the fixed focus component are arranged in sequence from the object side to the image side, wherein the adjustable focus component includes a first liquid lens H1, and the fixed focus component may include a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5. Figure 4A As can be seen from FIG, in the power-on state, the first liquid lens H1 is in a non-planar shape.

[0252] Figure 4B FIG. 3 shows a schematic diagram of the structure of the optical lens 10 in the power-off state (no voltage applied) in Example 3 of the present application. Figure 4B As shown, in the power-off state, the first liquid lens H1 is in a flat shape. The focal length of the optical lens 10 is the same as the focal length of the fixed focal length component.

[0253] The optical design parameters of the optical lens 10 in the third embodiment of the present application are as follows:

[0254] Table 5 Optical design parameters of the optical lens 10 in the third embodiment

[0255]

[0256]

[0257] In Table 5 above, the meanings of the symbols are as follows:

[0258] S1: first surface of the first liquid lens; S2: second surface of the first liquid lens; S3: third surface of the first liquid lens; S4: fourth surface of the first liquid lens; S5: fifth surface of the first liquid lens; S6: object-side surface of the first lens L1; S7: image-side surface of the first lens L1; S9: object-side surface of the second lens L2; ​​S10: image-side surface of the second lens L2; ​​S11: object-side surface of the third lens L3; S12: image-side surface of the third lens L3; S13: object-side surface of the fourth lens L4; S14: image-side surface of the fourth lens L4; S15: object-side surface of the fifth lens L5; S16: image-side surface of the fifth lens L5; S17: object-side surface of the infrared cut-off filter; S18: image-side surface of the infrared cut-off filter.

[0259] In addition, it can be seen from Table 5 that when the adjustable focus assembly is in the power-on state (voltage applied state), the image side focal length EFL1 of the optical lens 10 is 1.47, the aperture value FNO1 is 2.14, the half field of view angle HFOV1 is 56°, and the total optical length TTL is 3.71; when the adjustable focus assembly is in the power-off state (no voltage applied state), the image side focal length EFL2 of the optical lens 10 is 1.4, the aperture value FNO2 is 2.14, and the half field of view angle HFOV2 is 65°.

[0260] Table 6-1 Aspheric coefficients of the optical lens 10 in the third embodiment

[0261]

[0262]

[0263] Table 6-2 Aspheric coefficients of the optical lens 10 in the third embodiment

[0264]

[0265]

[0266] Where K represents the conic coefficient in the aspheric curve equation, and A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 represent the 4th, 6th, 8th, 10th, 12th, 14th, 16th, 20th, 22nd, 24th, 26th, 28th, and 30th order aspheric coefficients of each surface. Surface numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, and 16 correspond to the lens surfaces S1, S2, S3, S4, S5, S6, S7, stop, S9, S10, S11, S12, S13, S14, S15, and S16, respectively.

[0267] In this embodiment of the present application, the object-side surface of the first lens element L1 is concave near the optical axis, and the image-side surface is concave near the optical axis; the object-side surface of the second lens element L2 is convex near the optical axis, and the image-side surface is convex near the optical axis; the object-side surface of the third lens element L3 is concave near the optical axis, and the image-side surface is concave near the optical axis; the object-side surface of the fourth lens element L4 is convex near the optical axis, and the image-side surface is convex near the optical axis. The object-side surface of the fifth lens element L5 is convex near the optical axis, and the image-side surface is concave near the optical axis.

[0268] The focal power of the first lens L1 is negative, the focal power of the second lens L2 is positive, the focal power of the third lens L3 is negative, the focal power of the fourth lens L4 is positive, and the focal power of the fifth lens L5 is negative.

[0269] In the embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the half field of view angle HFOV1 = 56°, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the half field of view angle HFOV2 = 65°, |HFOV1-HFOV2| = 9°.

[0270] In an embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the focal length of the optical lens f1 = 1.47; when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens f2 = 1.4, and f1 / f2 = 1.05.

[0271] In an embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the focal length of the adjustable focus lens fa = 3048.45, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens f2 = 1.4, fa / f2 = 2177.46.

[0272] In an embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the distance TTL from the object side surface of the first shape-fixed lens pointing from the object side to the image side to the imaging surface corresponding to the optical lens on the optical axis is 3.17. When the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens is f2=1.4, and TTL / f2=2.65.

[0273] In the embodiment of the present application, when the adjustable focus component is in the power-on state (voltage applied state), the focal length f1 of the optical lens is 1.47, and when the adjustable focus component is in the voltage applied state, the entrance pupil diameter EPD1 of the optical lens is 0.69, and f1 / EPD1 is 2.14.

[0274] In this embodiment of the present application, when the adjustable focus assembly is powered on (voltage is applied), the focal length f1 of the first shape-fixed lens element (i.e., the fifth lens element L5) pointing from the image side toward the object side has a focal length f1=-3.86, the focal length f1-1 of the second shape-fixed lens element (i.e., the fourth lens element L4) pointing from the image side toward the object side has a focal length f1-1=1.6, and |fl / fl-1|=2.41.

[0275] In the embodiment of the present application, half of the diagonal length of the effective pixel area of ​​the electronic photosensitive element on the imaging surface corresponding to the optical lens, Imgh=1.8, the distance from the object side of the first shape-fixed lens (i.e., the first lens L1) pointing along the object side to the image side to the imaging surface corresponding to the optical lens on the optical axis, TTL=3.71, and Imgh / TTL=0.49.

[0276] In the embodiment of the present application, R21 / R22*CT2=-0.41, where R21 is the radius of curvature of the object side surface of the first shape-fixed lens element (i.e., the first lens L1) in the fixed focal length assembly, which is directed from the object side to the image side; R22 is the radius of curvature of the image side surface of the second shape-fixed lens element (i.e., the second lens L2) in the fixed focal length assembly, which is directed from the object side to the image side; and CT2 is the center thickness of the second shape-fixed lens element (i.e., the second lens L2) in the fixed focal length assembly, which is directed from the object side to the image side, along the optical axis.

[0277] In the embodiment of the present application, the distance AT12 between the first shape-fixed lens element (i.e., the first lens L1) and the second shape-fixed lens element (i.e., the second lens element L2) along the object side toward the image side on the optical axis is 0.18, and the distance ATL between the first shape-fixed lens element (i.e., the fifth lens element L5) and the second shape-fixed lens element (i.e., the fourth lens element L4) along the image side toward the object side in the fixed focal length assembly along the optical axis is 0.16, and AT12 / ATL is 1.13.

[0278] In this embodiment of the present application, (CT2+CT3) / CTL=1.67, where CT2 is the center thickness of the second shape-fixed lens element (i.e., the second lens L2) in the fixed focal length assembly, which is directed from the object side to the image side, along the optical axis; CT3 is the center thickness of the third shape-fixed lens element (i.e., the third lens L3) in the fixed focal length assembly, which is directed from the object side to the image side, along the optical axis; and CTL is the center thickness of the first shape-fixed lens element (i.e., the fifth lens L5) in the fixed focal length assembly, which is directed from the image side to the object side, along the optical axis.

[0279] Figure 4C 、 Figure 4D 、 Figure 4EThe optical performance of the optical lens 10 of the third embodiment is shown, wherein the left figure represents the optical performance of the optical lens 10 in the power-on state (the state in which voltage is applied), and the right figure represents the optical performance of the optical lens 10 in the power-off state (the state in which voltage is not applied).

[0280] Figure 4C The figure shows the axial chromatic aberration of light with wavelengths of 470nm, 510nm, 555nm, 610nm, and 650nm respectively when passing through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state) in the third embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Figure 4C As can be seen from the comparison between the middle left and right figures, in this embodiment, the axial chromatic aberration of the optical lens 10 in the power-on state (the state with voltage applied) and the power-off state (the state without voltage applied) is controlled within a very small range.

[0281] Figure 4D The diagram shows the astigmatism of the light with a wavelength of 555 nm in the third embodiment when it passes through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state). The solid line is the astigmatism of the light with a wavelength of 555 nm after passing through the optical lens 10 in the meridional direction, and the dotted line is the astigmatism of the light with a wavelength of 555 nm after passing through the optical lens 10 in the sagittal direction. The ordinate is the image height, and the abscissa represents the astigmatism values ​​in the meridional direction (dotted line) and sagittal direction (solid line), and the unit is millimeters. Figure 4D As can be seen from the comparison between the left and right figures, in this embodiment, the astigmatism of the optical lens 10 in the power-on state (the state with voltage applied) and the power-off state (the state without voltage applied) is controlled within a very small range.

[0282] Figure 4E The figure shows the distortion of light with a wavelength of 555nm in the third embodiment when it passes through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state). The ordinate is the image height, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Figure 4E As can be seen from the comparison between the left and right figures, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range in the power-on state (the state in which voltage is applied) and the power-off state (the state in which no voltage is applied).

[0283] Therefore, by applying voltage to the adjustable optical lens 10, the focal length of the adjustable optical lens module is changed, so that the combined focal length of the adjustable optical lens module and the main camera lens module conforms to the focal length of the wide-angle lens, thereby meeting the demand for using a wide-angle lens.

[0284] Example 4

[0285] Figure 5A The schematic diagram of the structure of the optical lens 10 in the power-on state (voltage applied state) in Example 4 of the present application is shown. The optical lens 10 includes an adjustable focus component and a fixed focus component. Specifically, the adjustable focus component and the fixed focus component are arranged in sequence from the object side to the image side, wherein the adjustable focus component includes a first liquid lens H1, and the fixed focus component may include a first lens L1, a second lens L2, a third lens, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. Figure 5A As can be seen from FIG, in the power-on state, the first liquid lens H1 is in a non-planar shape.

[0286] Figure 5B FIG. 4 shows a schematic diagram of the structure of the optical lens 10 in the power-off state (no voltage applied) in Example 4 of the present application. Figure 5B As shown, in the power-off state, the first liquid lens H1 is in a flat shape. The focal length of the optical lens 10 is the same as the focal length of the fixed focal length component.

[0287] The optical design parameters of the optical lens 10 in the fourth embodiment of the present application are as follows:

[0288] Table 7 Optical design parameters of the optical lens 10 in the fourth embodiment

[0289]

[0290]

[0291] In Table 7 above, the meanings of the symbols are as follows:

[0292] S1: first surface of the first liquid lens; S2: second surface of the first liquid lens; S3: third surface of the first liquid lens; S4: fourth surface of the first liquid lens; S5: fifth surface of the first liquid lens; S6: object-side surface of the first lens L1; S7: image-side surface of the first lens L1; S8: object-side surface of the second lens L2; ​​S9: image-side surface of the second lens L2; ​​S11: object-side surface of the third lens L3; S12: image-side surface of the third lens L3 Surface; S13: object-side surface of the fourth lens L4; S14: image-side surface of the fourth lens L4; S15: object-side surface of the fifth lens L5; S16: image-side surface of the fifth lens L5; S17: object-side surface of the sixth lens L6; S18: image-side surface of the sixth lens L6; S19: object-side surface of the seventh lens L7; S20: image-side surface of the seventh lens L7; S21: object-side surface of the infrared cut-off filter; S22: image-side surface of the infrared cut-off filter.

[0293] In addition, it can be seen from Table 5 that when the adjustable focus assembly is in the power-on state (voltage applied state), the image side focal length EFL1 of the optical lens 10 is 4.36, the aperture value FNO1 is 1.85, the half field angle HFOV1 is 44°, and the total optical length TTL is 7.48; when the adjustable focus assembly is in the power-off state (no voltage applied state), the image side focal length EFL2 of the optical lens 10 is 4.19, the aperture value FNO2 is 1.86, and the half field angle HFOV2 is 51°.

[0294] Table 8-1 Aspheric coefficients of the optical lens 10 in the fourth embodiment

[0295]

[0296]

[0297] Table 8-2 Aspheric coefficients of the optical lens 10 in the fourth embodiment

[0298]

[0299]

[0300] Where K represents the conic coefficient in the aspheric curve equation, and A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 represent the 4th, 6th, 8th, 10th, 12th, 14th, 16th, 20th, 22nd, 24th, 26th, 28th, and 30th order aspheric coefficients of each surface. Surface numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20 correspond to the lens surfaces S1, S2, S3, S4, S5, S6, S7, S8, S9, stop, S11, S12, S13, S14, S15, S16, S17, S18, S19, and S20, respectively.

[0301] In this embodiment of the present application, the object-side surface of the first lens element L1 is concave near the optical axis, and the image-side surface is convex near the optical axis; the object-side surface of the second lens element L2 is convex near the optical axis, and the image-side surface is concave near the optical axis; the object-side surface of the third lens element L3 is concave near the optical axis, and the image-side surface is convex near the optical axis; the object-side surface of the fourth lens element L4 is concave near the optical axis, and the image-side surface is convex near the optical axis. The object-side surface of the fifth lens element L5 is concave near the optical axis, and the image-side surface is convex near the optical axis. The object-side surface of the sixth lens element L6 is convex near the optical axis, and the image-side surface is concave near the optical axis. The object-side surface of the seventh lens element L7 is convex near the optical axis, and the image-side surface is concave near the optical axis.

[0302] The focal power of the first lens L1 is negative, the focal power of the second lens L2 is positive, the focal power of the third lens L3 is positive, the focal power of the fourth lens L4 is negative, the focal power of the fifth lens L5 is negative, the focal power of the sixth lens L6 is positive, and the focal power of the seventh lens L7 is negative.

[0303] In the embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the half field of view angle HFOV1 = 44°, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the half field of view angle HFOV2 = 51°, and |HFOV1-HFOV2| = 7°.

[0304] In an embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the focal length of the optical lens f1 = 4.36; when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens f2 = 4.19, and f1 / f2 = 1.05.

[0305] In an embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the focal length of the adjustable focus lens fa = 1985.8, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens f2 = 4.19, fa / f2 = 473.94.

[0306] In the embodiment of the present application, when the adjustable focus assembly is in the power-on state (voltage is applied), the distance TTL on the optical axis from the object side of the first shape-fixed lens (i.e., the first lens L1) pointing from the object side to the image side to the corresponding imaging surface of the optical lens is 7.48. When the adjustable focus assembly is in the power-off state (no voltage is applied), the focal length f2 of the optical lens is 4.19, and TTL / f2 is 1.79.

[0307] In the embodiment of the present application, when the adjustable focus component is in the power-on state (voltage applied state), the focal length f1 of the optical lens is 4.36, and when the adjustable focus component is in the voltage applied state, the entrance pupil diameter EPD1 of the optical lens is 2.36, and f1 / EPD1 is 1.85.

[0308] In this embodiment of the present application, when the adjustable focus assembly is powered on (voltage is applied), the focal length f1 of the first shape-fixed lens pointing from the image side toward the object side is -15, the focal length f1-1 of the second shape-fixed lens pointing from the image side toward the object side (i.e., the sixth lens L6) is 5.25, and |f1 / f1-1| is 2.86.

[0309] In the embodiment of the present application, half of the diagonal length of the effective pixel area of ​​the electronic photosensitive element on the imaging surface corresponding to the optical lens is Imgh=1=4.8, and the distance from the object side of the first shape-fixed lens (i.e., the first lens L1) pointing along the object side to the image side to the imaging surface corresponding to the optical lens on the optical axis is TTL=7.48, and Imgh / TTL=0.64.

[0310] In the embodiment of the present application, R21 / R22*CT2=-1.09, where R21 is the radius of curvature of the object side surface of the first shape-fixed lens element (i.e., the first lens element L1) in the fixed focal length assembly, which is directed from the object side to the image side; R22 is the radius of curvature of the image side surface of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side; and CT2 is the center thickness of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side, along the optical axis.

[0311] In the embodiment of the present application, the distance AT12 between the first shape-fixed lens element (i.e., the first lens L1) and the second shape-fixed lens element (i.e., the second lens element L2) along the object side toward the image side on the optical axis is equal to 0.05. The distance ATL between the first shape-fixed lens element (i.e., the seventh lens element L7) and the second shape-fixed lens element (i.e., the sixth lens element L6) along the image side toward the object side in the fixed focal length assembly along the optical axis is equal to 0.5. AT12 / ATL=0.10.

[0312] In this embodiment of the present application, (CT2+CT3) / CTL=2.03, where CT2 is the center thickness along the optical axis of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side; CT3 is the center thickness along the optical axis of the third shape-fixed lens element (i.e., the third lens element L3) in the fixed focal length assembly, which is directed from the object side to the image side; and CTL is the center thickness along the optical axis of the first shape-fixed lens element (i.e., the seventh lens element L7) in the fixed focal length assembly, which is directed from the image side to the object side.

[0313] Figure 5C 、 Figure 5D 、 Figure 5E The optical performance of the optical lens 10 of the fourth embodiment is shown, wherein the left figure represents the optical performance of the optical lens 10 in the power-on state (the state in which voltage is applied), and the right figure represents the optical performance of the optical lens 10 in the power-off state (the state in which voltage is not applied).

[0314] Figure 5CThe figure shows the axial chromatic aberration of light with wavelengths of 470nm, 510nm, 555nm, 610nm, and 650nm respectively when passing through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state) in the fourth embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Figure 5C As can be seen from the comparison between the middle left and right figures, in this embodiment, the axial chromatic aberration of the optical lens 10 in the power-on state (the state with voltage applied) and the power-off state (the state without voltage applied) is controlled within a very small range.

[0315] Figure 5D The figure shows the astigmatism of the light with a wavelength of 555 nm in the fourth embodiment when it passes through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state). The solid line is the astigmatism of the light with a wavelength of 555 nm after passing through the optical lens 10 in the meridional direction, and the dotted line is the astigmatism of the light with a wavelength of 555 nm after passing through the optical lens 10 in the sagittal direction. The ordinate is the image height, and the abscissa represents the astigmatism values ​​in the meridional direction (dotted line) and sagittal direction (solid line), and the unit is millimeter. Figure 5D As can be seen from the comparison between the left and right figures, in this embodiment, the astigmatism of the optical lens 10 in the power-on state (the state with voltage applied) and the power-off state (the state without voltage applied) is controlled within a very small range.

[0316] Figure 5E The figure shows the distortion of light with a wavelength of 555nm in the fourth embodiment when it passes through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state). The ordinate is the image height, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Figure 5E As can be seen from the comparison between the left and right figures, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range in the power-on state (the state in which voltage is applied) and the power-off state (the state in which no voltage is applied).

[0317] Therefore, by applying voltage to the adjustable optical lens 10, the focal length of the adjustable optical lens module is changed, so that the combined focal length of the adjustable optical lens module and the main camera lens module conforms to the focal length of the wide-angle lens, thereby meeting the demand for using a wide-angle lens.

[0318] Example 5

[0319] Figure 6AThe schematic diagram of the structure of the optical lens 10 in the power-on state (the state of applying voltage) in Example 5 of the present application is shown. The optical lens 10 includes an adjustable focus component and a fixed focus component. Specifically, the adjustable focus component and the fixed focus component are arranged in sequence from the object side to the image side, wherein the adjustable focus component includes a first liquid lens H1 and a second liquid lens H2, and the fixed focus component may include a first lens L1, a second lens L2, a third lens, a fourth lens L4, a fifth lens L5, and a sixth lens L6. Figure 6A It can be seen from FIG that in the power-on state, both the first liquid lens H1 and the second liquid lens H2 are non-planar.

[0320] Figure 6B FIG. 5 shows a schematic diagram of the structure of the optical lens 10 in the power-off state (no voltage applied) in Example 5 of the present application. Figure 6B As shown, in the power-off state, the first liquid lens H1 and the second liquid lens H2 are both planar. The focal length of the optical lens 10 is the same as the focal length of the fixed focal length component.

[0321] The optical design parameters of the optical lens 10 in the fifth embodiment of the present application are as follows:

[0322] Table 9 Optical design parameters of the optical lens 10 in the fifth embodiment

[0323]

[0324] In Table 9 above, the meanings of the symbols are as follows:

[0325] S1: first surface of the first liquid lens; S2: second surface of the first liquid lens; S3: air gap between the first liquid lens H1 and the second liquid lens H2; S4: first surface of the second liquid lens; S5: second surface of the second liquid lens; S6: third surface of the second liquid lens; S7: fourth surface of the second liquid lens; S9: object-side surface of the first lens L1; S10: image-side surface of the first lens L1; S11: object-side surface of the second lens L2; ​​S12: image-side surface of the second lens L2; ​​S13: object-side surface of the third lens L3; S14: image-side surface of the third lens L3; S15: object-side surface of the fourth lens L4; S16: image-side surface of the fourth lens L4; S17: object-side surface of the fifth lens L5;

[0326] S18: image-side surface of fifth lens L5; S19: object-side surface of sixth lens L6; S20: image-side surface of sixth lens L6; S21: object-side surface of infrared cut filter; S22: image-side surface of infrared cut filter.

[0327] Furthermore, Table 9 shows that when the adjustable focus assembly is powered on (voltage applied), the image-side focal length EFL1 of the optical lens 10 is 2.44, the aperture value FNO1 is 2.18, the half-field angle HFOV1 is 45°, and the total optical length TTL is 4.87. When the adjustable focus assembly is powered off (no voltage applied), the image-side focal length EFL2 of the optical lens 10 is 2.20, the aperture value FNO2 is 2.19, and the half-field angle HFOV2 is 52°.

[0328] Table 10-1 Aspheric coefficients of the optical lens 10 in the fifth embodiment

[0329]

[0330]

[0331] Table 10-2 Aspheric coefficients of the optical lens 10 in the fifth embodiment

[0332]

[0333]

[0334] Where K represents the conic coefficient in the aspheric curve equation, and A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 represent the 4th, 6th, 8th, 10th, 12th, 14th, 16th, 20th, 22nd, 24th, 26th, 28th, and 30th order aspheric coefficients of each surface. Surface numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20 correspond to the lens surfaces S1, S2, S3, S4, S5, S6, S7, stop, S9, S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, and S20, respectively.

[0335] In this embodiment of the present application, the object-side surface of the first lens element L1 is concave near the optical axis, and the image-side surface is convex near the optical axis; the object-side surface of the second lens element L2 is concave near the optical axis, and the image-side surface is convex near the optical axis; the object-side surface of the third lens element L3 is convex near the optical axis, and the image-side surface is concave near the optical axis; the object-side surface of the fourth lens element L4 is concave near the optical axis, and the image-side surface is concave near the optical axis. The object-side surface of the fifth lens element L5 is concave near the optical axis, and the image-side surface is convex near the optical axis; and the object-side surface of the sixth lens element L6 is concave near the optical axis, and the image-side surface is convex near the optical axis.

[0336] The focal power of the first lens L1 is positive, the focal power of the second lens L2 is positive, the focal power of the third lens L3 is negative, the focal power of the fourth lens L4 is negative, the focal power of the fifth lens L5 is positive, and the focal power of the sixth lens L6 is negative.

[0337] In the embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the half field of view angle HFOV1 = 45°, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the half field of view angle HFOV2 = 52°, |HFOV1-HFOV2| = 7°.

[0338] In an embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the focal length of the optical lens f1 = 2.44; when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens f2 = 2.2, and f1 / f2 = 1.11.

[0339] In an embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the focal length of the adjustable focus lens fa=62.42, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens f2=2.2, fa / f2=28.37.

[0340] In the embodiment of the present application, when the adjustable focus assembly is in the power-on state (voltage is applied), the distance TTL on the optical axis from the object side of the first shape-fixed lens (i.e., the first lens L1) pointing from the object side to the image side to the corresponding imaging surface of the optical lens is 4.87. When the adjustable focus assembly is in the power-off state (no voltage is applied), the focal length f2 of the optical lens is 2.2, and TTL / f2 is 2.21.

[0341] In the embodiment of the present application, when the adjustable focus component is in the power-on state (voltage applied state), the focal length f1 of the optical lens is 2.44, and when the adjustable focus component is in the voltage applied state, the entrance pupil diameter EPD1 of the optical lens is 1.12, and f1 / EPD1 is 2.18.

[0342] In this embodiment of the present application, when the adjustable focus assembly is powered on (voltage is applied), the focal length f1 of the first shape-fixed lens element (i.e., the sixth lens element L6) pointing from the image side toward the object side has a focal length f1=-4.17, the focal length f1-1 of the second shape-fixed lens element (i.e., the fifth lens element L5) pointing from the image side toward the object side has a focal length f1-1=1.37, and |fl / fl-1|=3.04.

[0343] In the embodiment of the present application, half of the diagonal length of the effective pixel area of ​​the electronic photosensitive element on the imaging surface corresponding to the optical lens is Imgh=1=3.32, and the distance from the object side of the first shape-fixed lens (i.e., the first lens L1) pointing along the object side to the image side to the imaging surface corresponding to the optical lens on the optical axis is TTL=4.87, and Imgh / TTL=0.68.

[0344] In the embodiment of the present application, R21 / R22*CT2=0.10, where R21 is the radius of curvature of the object side surface of the first shape-fixed lens element (i.e., the first lens element L1) in the fixed focal length assembly, which is directed from the object side to the image side; R22 is the radius of curvature of the image side surface of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side; and CT2 is the center thickness of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side, along the optical axis.

[0345] In this embodiment of the present application, the distance AT12 between the first shape-fixed lens element (i.e., the first lens L1) and the second shape-fixed lens element (i.e., the second lens element L2) along the object side toward the image side on the optical axis is 0.08. The distance ATL between the first shape-fixed lens element (i.e., the sixth lens element L6) and the second shape-fixed lens element (i.e., the fifth lens element L5) along the image side toward the object side in the fixed focal length assembly along the optical axis is 0.07, and AT12 / ATL is 1.14.

[0346] In this embodiment of the present application, (CT2+CT3) / CTL=2.21, where CT2 is the center thickness along the optical axis of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side; CT3 is the center thickness along the optical axis of the third shape-fixed lens element (i.e., the third lens element L3) in the fixed focal length assembly, which is directed from the object side to the image side; and CTL is the center thickness along the optical axis of the first shape-fixed lens element (i.e., the sixth lens element L6) in the fixed focal length assembly, which is directed from the image side to the object side.

[0347] Figure 6C 、 Figure 6D 、 Figure 6E The optical performance of the optical lens 10 of the fifth embodiment is shown, wherein the left figure represents the optical performance of the optical lens 10 in the power-on state (the state in which voltage is applied), and the right figure represents the optical performance of the optical lens 10 in the power-off state (the state in which voltage is not applied).

[0348] Figure 6CThe figure shows the axial chromatic aberration of light with wavelengths of 470nm, 510nm, 555nm, 610nm, and 650nm respectively when passing through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state) in the fifth embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Figure 5C As can be seen from the comparison between the middle left and right figures, in this embodiment, the axial chromatic aberration of the optical lens 10 in the power-on state (the state with voltage applied) and the power-off state (the state without voltage applied) is controlled within a very small range.

[0349] Figure 6D The diagram shows the astigmatism of the light with a wavelength of 555 nm in the fifth embodiment when it passes through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state). The solid line is the astigmatism of the light with a wavelength of 555 nm after passing through the optical lens 10 in the meridional direction, and the dotted line is the astigmatism of the light with a wavelength of 555 nm after passing through the optical lens 10 in the sagittal direction. The ordinate is the image height, and the abscissa represents the astigmatism values ​​in the meridional direction (dotted line) and sagittal direction (solid line), and the unit is millimeters. Figure 5D As can be seen from the comparison between the left and right figures, in this embodiment, the astigmatism of the optical lens 10 in the power-on state (the state with voltage applied) and the power-off state (the state without voltage applied) is controlled within a very small range.

[0350] Figure 6E The figure shows the distortion of light with a wavelength of 555nm in the fifth embodiment when it passes through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state). The ordinate is the image height, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Figure 5E As can be seen from the comparison between the left and right figures, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range in the power-on state (the state in which voltage is applied) and the power-off state (the state in which no voltage is applied).

[0351] Therefore, by applying voltage to the adjustable optical lens 10, the focal length of the adjustable optical lens module is changed, so that the combined focal length of the adjustable optical lens module and the main camera lens module conforms to the focal length of the wide-angle lens, thereby meeting the demand for using a wide-angle lens.

[0352] Example 6

[0353] Figure 7AThe figure shows a schematic diagram of the structure of the optical lens 10 in the power-on state (the state of applying voltage) in Example 6 of the present application. The optical lens 10 includes an adjustable focus component and a fixed focus component. Specifically, the adjustable focus component and the fixed focus component are arranged in sequence from the object side to the image side, wherein the adjustable focus component includes a first liquid lens H1 and a second liquid lens H2, and the fixed focus component may include a first lens L1, a second lens L2, a third lens, a fourth lens L4, a fifth lens L5, and a sixth lens L6. Figure 6A It can be seen from FIG that in the power-on state, both the first liquid lens H1 and the second liquid lens H2 are non-planar.

[0354] Figure 7B FIG. 1 shows a schematic diagram of the structure of the optical lens 10 in the power-off state (no voltage applied) in Example 6 of the present application. Figure 7B As shown, in the power-off state, the first liquid lens H1 and the second liquid lens H2 are both planar. The focal length of the optical lens 10 is the same as the focal length of the fixed focal length component.

[0355] The optical design parameters of the optical lens 10 in the sixth embodiment of the present application are as follows:

[0356] Table 11 Optical design parameters of the optical lens 10 in the sixth embodiment

[0357]

[0358]

[0359] In Table 11 above, the meanings of the symbols are as follows:

[0360] S1: first surface of the first liquid lens; S2: second surface of the first liquid lens; S3: air gap between the first liquid lens H1 and the second liquid lens H2; S4: first surface of the second liquid lens; S5: second surface of the second liquid lens; S6: third surface of the second liquid lens; S7: fourth surface of the second liquid lens; S9: object-side surface of the first lens L1; S10: image-side surface of the first lens L1; S11: object-side surface of the second lens L2; S12: image-side surface of second lens L2; ​​S13: object-side surface of third lens L3; S14: image-side surface of third lens L3; S15: object-side surface of fourth lens L4; S16: image-side surface of fourth lens L4; S17: object-side surface of fifth lens L5; S18: image-side surface of fifth lens L5; S19: object-side surface of sixth lens L6; S20: image-side surface of sixth lens L6; S21: object-side surface of infrared cut-off filter; S22: image-side surface of infrared cut-off filter.

[0361] Furthermore, Table 11 shows that when the adjustable focus assembly is powered on (voltage applied), the image-side focal length EFL1 of the optical lens 10 is 2.58, the aperture value FNO1 is 2.29, the half-field angle HFOV1 is 45°, and the total optical length TTL is 4.92. When the adjustable focus assembly is powered off (no voltage applied), the image-side focal length EFL2 of the optical lens 10 is 2.40, the aperture value FNO2 is 2.32, and the half-field angle HFOV2 is 52°.

[0362] Table 12-1 Aspheric coefficients of the optical lens 10 in the sixth embodiment

[0363]

[0364]

[0365] Table 12-2 Aspheric coefficients of the optical lens 10 in the sixth embodiment

[0366]

[0367]

[0368] Where K represents the conic coefficient in the aspheric curve equation, and A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 represent the 4th, 6th, 8th, 10th, 12th, 14th, 16th, 20th, 22nd, 24th, 26th, 28th, and 30th order aspheric coefficients of each surface. Surface numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20 correspond to the lens surfaces S1, S2, S3, S4, S5, S6, S7, stop, S9, S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, and S20, respectively.

[0369] In this embodiment of the present application, the object-side surface of the first lens element L1 is concave near the optical axis, and the image-side surface is convex near the optical axis; the object-side surface of the second lens element L2 is concave near the optical axis, and the image-side surface is convex near the optical axis; the object-side surface of the third lens element L3 is convex near the optical axis, and the image-side surface is concave near the optical axis; the object-side surface of the fourth lens element L4 is concave near the optical axis, and the image-side surface is convex near the optical axis. The object-side surface of the fifth lens element L5 is concave near the optical axis, and the image-side surface is convex near the optical axis; and the object-side surface of the sixth lens element L6 is concave near the optical axis, and the image-side surface is convex near the optical axis.

[0370] The focal power of the first lens L1 is positive, the focal power of the second lens L2 is positive, the focal power of the third lens L3 is negative, the focal power of the fourth lens L4 is negative, the focal power of the fifth lens L5 is positive, and the focal power of the sixth lens L6 is negative.

[0371] In the embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the half field of view angle HFOV1 = 45°, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the half field of view angle HFOV2 = 52°, |HFOV1-HFOV2| = 7°.

[0372] In an embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the focal length of the optical lens f1 = 2.58; when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens f2 = 2.24f1 / f2 = 1.08.

[0373] In the embodiment of the present application, when the adjustable focus component is in the power-on state (the state in which voltage is applied), the focal length of the adjustable focus lens fa = 73.47, and when the adjustable focus component is in the power-off state (the state in which voltage is not applied), the focal length of the optical lens f2 = 2.4, fa / f2 = 30.61.

[0374] In the embodiment of the present application, when the adjustable focus assembly is in the power-on state (voltage is applied), the distance TTL on the optical axis from the object side of the first shape-fixed lens (i.e., the first lens L1) pointing from the object side to the image side to the corresponding imaging surface of the optical lens is 4.92. When the adjustable focus assembly is in the power-off state (no voltage is applied), the focal length f2 of the optical lens is 2.4, and TTL / f2 is 2.05.

[0375] In the embodiment of the present application, when the adjustable focus component is in the power-on state (voltage applied state), the focal length f1 of the optical lens is 2.58, and when the adjustable focus component is in the voltage applied state, the entrance pupil diameter EPD1 of the optical lens is 1.13, and f1 / EPD1 is 2.29.

[0376] In this embodiment of the present application, when the adjustable focus assembly is powered on (voltage is applied), the focal length f1 of the first shape-fixed lens element (i.e., the sixth lens element L6) pointing from the image side toward the object side has a focal length f1=-2.03, the focal length f1-1 of the second shape-fixed lens element (i.e., the fifth lens element L5) pointing from the image side toward the object side has a focal length f1-1=1.27, and |fl / fl-1|=1.60.

[0377] In the embodiment of the present application, half of the diagonal length of the effective pixel area of ​​the electronic photosensitive element on the imaging surface corresponding to the optical lens Imgh=1=3.32, the distance from the object side of the first shape-fixed lens (i.e., the first lens L1) pointing along the object side to the image side to the imaging surface corresponding to the optical lens on the optical axis TTL=4.92, Imgh / TTL=0.67.

[0378] In the embodiment of the present application, R21 / R22*CT2=0.00, where R21 is the radius of curvature of the object side surface of the first shape-fixed lens element (i.e., the first lens element L1) in the fixed focal length assembly, which is directed from the object side to the image side; R22 is the radius of curvature of the image side surface of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side; and CT2 is the center thickness of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side, along the optical axis.

[0379] In this embodiment of the present application, the distance AT12 between the first shape-fixed lens element (i.e., the first lens L1) and the second shape-fixed lens element (i.e., the second lens element L2) along the object side toward the image side on the optical axis is 0.06, and the distance ATL between the first shape-fixed lens element (i.e., the sixth lens element L6) and the second shape-fixed lens element (i.e., the fifth lens element L5) along the image side toward the object side in the fixed focal length assembly along the optical axis is 0.05, and AT12 / ATL is 1.20.

[0380] In this embodiment of the present application, (CT2+CT3) / CTL=2.43, where CT2 is the center thickness along the optical axis of the second shape-fixed lens element (i.e., the second lens element L2) in the fixed focal length assembly, which is directed from the object side to the image side; CT3 is the center thickness along the optical axis of the third shape-fixed lens element (i.e., the third lens element L3) in the fixed focal length assembly, which is directed from the object side to the image side; and CTL is the center thickness along the optical axis of the first shape-fixed lens element (i.e., the sixth lens element L6) in the fixed focal length assembly, which is directed from the image side to the object side.

[0381] Figure 7C 、 Figure 7D 、 Figure 7E The optical performance of the optical lens 10 of the sixth embodiment is shown, wherein the left figure represents the optical performance of the optical lens 10 in the power-on state (the state in which voltage is applied), and the right figure represents the optical performance of the optical lens 10 in the power-off state (the state in which voltage is not applied).

[0382] Figure 7CThe figure shows the axial chromatic aberration of light with wavelengths of 470nm, 510nm, 555nm, 610nm, and 650nm respectively when passing through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state) in the sixth embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Figure 7C As can be seen from the comparison between the middle left and right figures, in this embodiment, the axial chromatic aberration of the optical lens 10 in the power-on state (the state with voltage applied) and the power-off state (the state without voltage applied) is controlled within a very small range.

[0383] Figure 7D The figure shows the astigmatism of the light with a wavelength of 555nm in the sixth embodiment when it passes through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state). The solid line is the astigmatism of the light with a wavelength of 555nm passing through the optical lens 10 in the meridional direction, and the dotted line is the astigmatism of the light with a wavelength of 555nm passing through the optical lens 10 in the sagittal direction. The ordinate is the image height, and the abscissa represents the astigmatism values ​​in the meridional direction (dotted line) and sagittal direction (solid line), and the unit is millimeter. Figure 7D As can be seen from the comparison between the left and right figures, in this embodiment, the astigmatism of the optical lens 10 in the power-on state (the state with voltage applied) and the power-off state (the state without voltage applied) is controlled within a very small range.

[0384] Figure 7E The figure shows the distortion of light with a wavelength of 555nm in the sixth embodiment when it passes through the optical lens 10 in the power-on state (voltage applied state) and the power-off state (no voltage applied state). The ordinate is the image height, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Figure 7E As can be seen from the comparison between the left and right figures, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range in the power-on state (the state in which voltage is applied) and the power-off state (the state in which no voltage is applied).

[0385] Therefore, by applying voltage to the adjustable optical lens 10, the focal length of the adjustable optical lens module is changed, so that the combined focal length of the adjustable optical lens module and the main camera lens module conforms to the focal length of the wide-angle lens, thereby meeting the demand for using a wide-angle lens.

[0386] The following is a summary description of the parameters in Examples 1 to 6 of the present application.

[0387] The parameters of the optical lens 10 in the above-mentioned Examples 1 to 6 are shown in Table 13-1 and Table 13-2.

[0388] Table 13-1 Key indicators of optical lenses

[0389]

[0390]

[0391] Table 13-2 Key indicators of optical lenses

[0392]

[0393] The meanings of HFOV1 and the like in Table 13-1 and Table 13-2 are the same as those mentioned above, and the parameters in Table 13-1 and Table 13-2 have been described in Examples 1 to 6 and will not be repeated here.

[0394] In summary, the optical lens provided in this application can achieve multiple shooting needs with only one set of lenses. Compared with some solutions that require the use of multiple sets of lenses, it can effectively reduce the area occupied by electronic equipment.

[0395] Correspondingly, an embodiment of the present application also provides an electronic device, including a shell, a processor and the above-mentioned camera module, the camera module is arranged on the front and / or back of the shell, the camera module is used to transmit image data to the processor, and the processor is used to process the image data.

[0396] In some embodiments, the housing of the electronic device is provided with a protective lens, which is used to protect the optical lens. The protective lens is the first lens in the optical lens pointing from the object side to the image side. It can be understood that using the first lens in the adjustable focal length assembly as a protective lens can save the cost of the electronic device.

[0397] In the accompanying drawings, some structural or method features may be shown in a particular arrangement and / or order. However, it should be understood that such a particular arrangement and / or order is not required. Rather, in some embodiments, these features may be illustrated in a manner and / or order different from that shown in the illustrative drawings. In addition, the inclusion of structural or method features in a particular drawing does not mean that all embodiments need to include such features. In some embodiments, these features may not be included, or they may be combined with other features.

[0398] The embodiments of the present application are described in detail above with reference to the accompanying drawings. However, the application of the technical solution of the present application is not limited to the various applications mentioned in the embodiments of the present patent. Various structures and variations can be easily implemented with reference to the technical solution of the present application to achieve the various beneficial effects mentioned herein. Various changes made within the knowledge of ordinary technicians in this field without departing from the purpose of the present application should fall within the scope of coverage of the patent application.

Claims

1. An optical lens, characterized in that: include: An adjustable focus assembly and a fixed focus assembly arranged along a first direction; The adjustable focus assembly includes at least one adjustable focus lens, the fixed focus assembly includes at least one shape-fixed lens, and The at least one adjustable focus lens is in a first shape, and the optical lens composed of the adjustable focus component and the fixed focus component has a first focal length, and the first focal length corresponds to the focal length of a first type of lens; When the at least one adjustable focus lens is in the second shape, the optical lens composed of the adjustable focus component and the fixed focus component has a second focal length, and the second focal length corresponds to the focal length of a second type of lens.

2. The optical lens according to claim 1, wherein: The first type of lens includes a main camera lens, and the second type of lens includes a wide-angle lens.

3. The optical lens according to claim 2, wherein: The focal length of the adjustable focus lens changes based on an applied voltage, and the focal length of the fixed focus assembly is the focal length of the first type of lens; When the at least one adjustable focus lens is in a state where no voltage is applied, the at least one adjustable focus lens is in a first shape, the optical lens composed of the adjustable focus component and the fixed focus component has a first focal length, wherein the first shape is a planar shape; When the at least one adjustable focus lens is in a first voltage state, the at least one adjustable focus lens is in a second shape, and the optical lens composed of the adjustable focus component and the fixed focus component has a second focal length, wherein the second shape is a non-planar shape.

4. The optical lens according to claim 2, wherein: The adjustable focus lens is a liquid lens, the shape of the liquid lens changes based on the applied voltage, and the focal length of the fixed focus component is the focal length of the second type of lens; When the at least one adjustable focus lens is in a second voltage applied state, the at least one adjustable focus lens is in a first shape, the optical lens composed of the adjustable focus component and the fixed focus component has a first focal length, wherein the first shape is a non-planar shape; When the at least one adjustable focus lens is in a state where no voltage is applied, the at least one adjustable focus lens is in a second shape, the optical lens composed of the adjustable focus component and the fixed focus component has a second focal length, and the second shape is a planar shape.

5. The optical lens according to claim 1, wherein: The fixed focal length assembly includes at least four solid lenses, wherein the first lens of the at least four solid lenses pointing from the image side to the object side has a negative optical focal length, and the second lens has a positive optical focal length.

6. The optical lens according to any one of claims 1 to 5, characterized in that: The half field angle of the optical lens satisfies the following formula: |HFOV1-HFOV2|>7 Wherein, HFOV1 is the half field of view angle of the optical lens when the adjustable focus component is in a voltage-applied state; HFOV2 is the half field of view angle of the optical lens when the adjustable focus component is in a non-voltage-applied state.

7. The optical lens according to any one of claims 1 to 5, wherein: The focal length of the optical lens satisfies the following formula: f1 / f2>1.05 Wherein, f1 is the focal length of the optical lens when the adjustable focus component is in a voltage-applied state; f2 is the focal length of the optical lens when the adjustable focus component is in a voltage-unapplied state.

8. The optical lens according to any one of claims 1 to 5, wherein: The focal length of the optical lens satisfies the following formula: fa / f2>28 Among them, fa is the focal length of the adjustable focus lens when the adjustable focus component is in a voltage-applied state; f2 is the focal length of the optical lens when the adjustable focus component is in a non-voltage-applied state.

9. The optical lens according to any one of claims 1 to 5, wherein: The optical lens satisfies the following formula: 1.4 <TTL / f2<2.7 Among them, TTL is the distance on the optical axis from the object side of the first shape-fixed lens pointing from the object side to the image side in the fixed focal length assembly to the imaging surface corresponding to the optical lens, and f2 is the focal length of the optical lens when the adjustable focal length assembly is in a state of no voltage applied; wherein, the first shape-fixed lens is the first shape-fixed lens in the optical lens pointing from the object side to the image side.

10. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens satisfies the following formula: 1.0 <f1 / EPD1<2.5 Wherein, f1 is the focal length of the optical lens when the adjustable focus component is in a voltage-applied state; EPD1 is the entrance pupil diameter of the optical lens when the adjustable focus component is in a voltage-applied state.

11. The optical lens according to any one of claims 1 to 5, characterized in that: |fl / fl-1| satisfies the following formula: |fl / fl-1|<3.1 Among them, f1 is the focal length of the first shape-fixed lens in the optical lens, which is directed from the image side to the object side, and fl-1 is the focal length of the second shape-fixed lens in the optical lens, which is directed from the image side to the object side.

12. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens satisfies the following formula: Imgh / TTL<0.8 Among them, Imgh is half of the diagonal length of the effective pixel area of ​​the electronic photosensitive element on the imaging surface corresponding to the optical lens, and TTL is the distance on the optical axis from the object side of the first shape fixed lens pointing from the object side to the image side in the fixed focal length component to the imaging surface corresponding to the optical lens.

13. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens satisfies the following formula: -2 <R21 / R22*CT2<0 Among them, R21 is the curvature radius of the object side of the first shape-fixed lens in the fixed focal length assembly, which is directed from the object side to the image side; R22 is the curvature radius of the image side of the second shape-fixed lens in the fixed focal length assembly, which is directed from the object side to the image side; CT2 is the center thickness of the second shape-fixed lens in the fixed focal length assembly, which is directed from the object side to the image side, in the optical axis direction.

14. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens satisfies the following formula: 0 <AT12 / ATL<3 Among them, AT12 is the distance between the first shape-fixed lens and the second shape-fixed lens on the optical axis along the object side pointing to the image side in the fixed focal length assembly, and ATL is the distance between the first shape-fixed lens and the second shape-fixed lens on the optical axis along the image side pointing to the object side in the fixed focal length assembly.

15. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens satisfies the following formula: 1.5<(CT2+CT3) / CTL<3.7 Among them, CT2 is the center thickness of the second shape-fixed lens in the fixed focal length assembly along the object side pointing to the image side in the optical axis direction, CT3 is the center thickness of the third shape-fixed lens in the fixed focal length assembly along the object side pointing to the image side in the optical axis direction, and CTL is the center thickness of the first shape-fixed lens in the fixed focal length assembly along the image side pointing to the object side in the optical axis direction.

16. A camera module, characterized in that: The optical lens comprises the optical lens according to any one of claims 1 to 15.

17. An electronic device, characterized in that: Including the camera module described in claim 16.

18. The electronic device according to claim 17, wherein: The housing of the electronic device is provided with a protective lens, which is used to protect the optical lens. The protective lens is the first lens in the optical lens pointing from the object side to the image side.

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