Optical lens, camera module and electronic device

Abstract

An optical lens (36), a camera module (30) and an electronic device (01). The optical lens (36) comprises a first fixed lens group (361), a second fixed lens group (362), an image stabilization lens group (363) and a focusing lens group (364) which are arranged in the direction of the optical axis (360) of the optical lens (36). The first fixed lens group (361), the second fixed lens group (362), the image stabilization lens group (363) and the focusing lens group (364) each comprise at least one lens having a focal power. The second fixed lens group (362), the image stabilization lens group (363) and the focusing lens group (364) are all located on the image side of the first fixed lens group (361), and at least one of the image stabilization lens group (363) and the focusing lens group (364) is located between the first fixed lens group (361) and the second fixed lens group (362). The optical lens (36) can reduce the size of the camera module (30), thus facilitating the lighter and thinner design of the electronic device (01); moreover, the distortion and curvature of field thereof can also be corrected, thus helping to improve imaging quality.

Description

Optical lenses, camera modules and electronic devices

[0001] This application claims priority to Chinese Patent Application No. 202410817110.0, filed with the State Intellectual Property Office of China on June 21, 2024, entitled "Optical Lens, Camera Module and Electronic Device", and Chinese Patent Application No. 202410817110.0, filed with the State Intellectual Property Office of China on July 26, 2024, entitled "Fixed Optical Components, Periscope Camera Module and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of photography and videography technology, and more particularly to an optical lens, a camera module, and an electronic device. Background Technology

[0003] As people's demand for electronic devices (such as mobile phones, tablets, and smartwatches) increases year by year, these devices have acquired more functions. For example, electronic devices generally have photography and video recording functions, which are achieved based on camera modules.

[0004] With the development of photography and videography technology, camera modules have generally begun to have adjustable focus and image stabilization functions, making them suitable for various shooting scenarios. However, existing camera modules are relatively large, taking up a lot of internal space in electronic devices, which is not conducive to the thinning and lightening of electronic devices. Summary of the Invention

[0005] This application provides an optical lens, a camera module, and an electronic device to solve the problem of the large size of existing camera modules.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0007] This application provides an optical lens, including a first fixed lens group, a second fixed lens group, an image stabilization lens group, and a focusing lens group arranged along the optical axis of the optical lens.

[0008] Each of the first fixed lens group, the second fixed lens group, the image stabilization lens group, and the focusing lens group includes at least one lens with optical power. The second fixed lens group, the image stabilization lens group, and the focusing lens group are all located on the image side of the first fixed lens group, and at least one of the image stabilization lens group and the focusing lens group is located between the first fixed lens group and the second fixed lens group.

[0009] The optical lens provided in the first aspect of this application, by separately setting up an image stabilization lens group and a focusing lens group, allows the driving component to only drive the image stabilization lens group to move during image stabilization compensation and during focusing. In other words, compared to driving the entire optical lens, the driving force required to drive a single image stabilization lens group and a single focusing lens group is smaller, thus reducing the load on the driving component. This means that a smaller driving component can be used, which helps to reduce the size of the camera module. Furthermore, the optical lens also includes a first fixed lens group and a second fixed lens group. The first fixed lens group can concentrate light, thereby reducing the aperture of other lens groups on the image side of the first fixed lens group, which helps to reduce the size of the optical lens. The second fixed lens group can compensate for aberrations in the optical lens to a certain extent, correcting distortion and field curvature, which helps to improve image quality.

[0010] In some implementations, the optical lens also includes a light-deflecting component located on the image side of the first fixed lens group. This light-deflecting component can be a mirror, a reflecting prism, or similar device. In this way, the light-deflecting component can bend and fold the optical axis of the lens, meaning it can convert the thickness of the optical lens into its length. This allows the optical lens to achieve a telephoto effect while maintaining a relatively small thickness, contributing to the thinner and lighter design of electronic devices.

[0011] In some implementations, the first fixed lens group includes a reflecting prism and at least one lens with optical power. This structure allows the reflecting prism to alter the direction of light; for example, this optical lens can be used in a periscope camera module.

[0012] In some implementations, at least one of the image stabilization lens group, the focusing lens group, and the second fixed lens group contains a cemented doublet lens. Cemented doublet lenses have less light energy loss and can also correct spherical aberration, coma, and chromatic aberration to a certain extent, thereby improving image quality.

[0013] In some implementations, the optical lens also includes an infrared filter, located on the image side of the last lens element. Using an infrared filter effectively filters out infrared light, allowing only visible light to enter, thereby improving image quality and sharpness. Furthermore, it prevents infrared light from generating heat on the surface of the optical components, thus avoiding any impact on image quality and sharpness from infrared light.

[0014] In some implementations, the optical lens also includes an aperture stop located on the object side of the first fixed lens group. Alternatively, the aperture stop extends around the object side of the first fixed lens. This arrangement allows for improved image sharpness, control of the image space, and control of the image plane's brightness. Furthermore, by adjusting the size of the aperture stop, a larger entrance pupil diameter can be obtained, resulting in a larger aperture and diffraction limit without changing the focal length of the optical lens, thus improving the image quality of the optical lens.

[0015] In some implementations, the optical lens satisfies the following relationship: 0.4 < CT MAX / TTL < 0.7. Where TTL is the total optical length of the lens along its own optical axis. CT MAX It is the maximum distance between any two adjacent elements in the four elements of the first fixed lens group, the second fixed lens group, the image stabilization lens group, and the focusing lens group, along the direction of extension of the optical axis of the lens.

[0016] The above relationship is achieved by controlling the CT scan. MAX A TTL value higher than the lower limit of 0.4 ensures sufficient space between adjacent lens groups in the optical lens for installing light-deflecting components, which helps reduce the size of the optical lens. (Controlling CT) MAX A / TTL value less than the upper limit of 0.7 is beneficial to ensuring the imaging quality of the optical system.

[0017] In some implementations, the optical lens satisfies the following relationship: 0.4 < EFL / TTL < 0.8. Where EFL is the system focal length of the optical lens.

[0018] The above relationship limits the range of the ratio of the system focal length to the total length of the optical lens, which is beneficial to improving the resolution of the optical lens.

[0019] In some implementations, the optical lens satisfies the following relationship: 3.1 < FNO < 4.5. Where FNO is the aperture value of the optical lens.

[0020] The above relationship limits the aperture value range of the optical lens, which helps to ensure that the optical lens has high image quality while also having a small size and good light intake performance.

[0021] In some implementations, the optical lens satisfies the following relationship: 0.1 < F1 / EFL < 1. Where F1 is the focal length of the first fixed lens group.

[0022] The above relationship limits the range of the ratio between the focal length of the first fixed lens group and the focal length of the optical lens system, thereby reasonably allocating the optical power of the first fixed lens group, making it easier to control the direction of light after entering the first fixed lens group and to converge the light, which is beneficial to reducing the aperture size of subsequent lens groups.

[0023] In some implementations, the optical lens satisfies the following relationship: EFL AF / EFL < 0.6. Where EFL AF This is the focal length of the focusing lens group.

[0024] The above relationship limits the range of the ratio between the focal length of the focusing lens group and the focal length of the optical lens system, thereby rationally allocating the optical power of the focusing lens group, which can reduce the travel of the focusing lens group when moving to focus, and also reduce the tolerance sensitivity of the focusing lens group.

[0025] In some implementations, the optical lens satisfies the following relationship: -4 < EFL OIS / EFL < 4. Where EFL OIS The focal length of the image stabilization lens group.

[0026] The above relationship limits the range of the ratio between the focal length of the image stabilization lens group and the focal length of the optical lens system, thereby reasonably allocating the optical power of the image stabilization lens group, which can reduce the movement of the image stabilization lens group when performing image stabilization compensation, and also reduce the tolerance sensitivity of the image stabilization lens group.

[0027] In some implementations, the optical lens satisfies the following relationship: 0.01 < CT AF / TTL < 0.2. Wherein, CT AF It is the center thickness of the focusing lens group along the optical axis of the lens.

[0028] The above relationship limits the range of the ratio of the center thickness of the focusing lens group to the total optical length of the optical lens, which is beneficial to reduce the overall length of the focusing lens group, that is, to reduce the size of the focusing lens group, thereby reducing the load on the voice coil motor and improving the life and response speed of the voice coil motor.

[0029] In some implementations, the optical lens satisfies the following relationship: 0.01 < CT OIS / TTL < 0.2. Wherein, CT OIS The thickness of the image stabilization lens group is the center thickness along the optical axis of the lens.

[0030] The above relationship limits the range of the ratio of the center thickness of the image stabilization lens group to the total optical length of the optical lens, which is beneficial to reduce the overall length of the image stabilization lens group, that is, to reduce the size of the image stabilization lens group, thereby reducing the load on the drive components and improving the lifespan and response speed of the drive components.

[0031] In some implementations, the optical lens satisfies the following relationship: 2.5 < CT MAX / EPD < 4.5. Where EPD is the entrance pupil diameter of the optical lens.

[0032] The above relationship limits the range of the ratio of the maximum center distance between two adjacent lens groups in an optical lens to the entrance pupil diameter, so as to facilitate the addition of light deflection components (such as mirrors, reflecting prisms, etc.) between these two lens groups, while also ensuring the amount of light entering the optical lens.

[0033] This application provides a fixed optical component. It is understood that, in some cases, the first fixed lens group described above can be this fixed optical component.

[0034] A fixed optical component is used in a periscope camera module. The fixed optical component includes a prism and a fixed lens. The fixed lens is disposed on the image side of the prism and is a plastic lens with optical power. At least one of the object side of the fixed lens and the image side of the prism is provided with a first adhesive area. A first adhesive is disposed in the first adhesive area, and the fixed lens and the prism are connected through the first adhesive.

[0035] The fixed optical component provided in this application embodiment is applied to a periscope camera module. Since a fixed lens, which is a plastic lens with optical power, is bonded to the image side of the prism via a first adhesive, the fixed optical component possesses optical power and thus has the refractive power to deflect light. This allows more light to enter the periscope camera module using this fixed optical component, effectively increasing the light intake and expanding the field of view. Because the fixed lens is a plastic lens, it is easy to design aspherical surfaces, facilitating manufacturing. Since the fixed lens and prism are connected via the first adhesive, assembly of the prism and fixed lens is convenient, resulting in high assembly efficiency and stability.

[0036] In some implementations, the first adhesive region includes a first surface and a second surface, the first surface being perpendicular to the optical axis, the second surface being located at the end of the first surface close to the optical axis, and the second surface being inclined relative to the first surface.

[0037] In some implementations, the angle formed between the first surface and the second surface is an obtuse angle.

[0038] In some implementations, the fixed lens has an effective mirror area and an edge area, with the edge area surrounding the outer region of the effective mirror area, and the first adhesive area being disposed on the edge area of ​​the object side of the fixed lens.

[0039] In some implementations, the first adhesive region is an annular groove coaxial with the fixed lens.

[0040] In some implementations, there are multiple fixed lenses, which are arranged sequentially and connected along the object-to-image side. A second adhesive region is provided between two adjacent fixed lenses, and a second adhesive is provided in the second adhesive region. The two adjacent fixed lenses are connected by the second adhesive.

[0041] In some implementations, there are two fixed lenses, namely a first lens and a second lens. The second lens is located on the image side of the first lens. The first lens has negative optical power, and the second lens has positive optical power.

[0042] In some implementations, one of two adjacent fixed lenses is provided with a recess and the other with a protrusion, at least a portion of the structure of the recess is located within the recess, and the recess and the protrusion define a second adhesive-containing area.

[0043] In some implementations, the recess includes a third and a fourth connected surface, and the protrusion has a fifth and a sixth connected surface. The third and fifth surfaces are spaced apart from each other, and the fourth and sixth surfaces are in contact. The third, fourth, and fifth surfaces enclose a second adhesive-containing area.

[0044] In some implementations, the fixed optical assembly further includes a first lens barrel having a receiving cavity and a first opening and a second opening communicating with the receiving cavity. A prism is mounted in the receiving cavity, with the object side of the prism facing the first opening and the image side of the prism facing the second opening. A fixed lens passes at least partially through the second opening and is connected to the prism.

[0045] The second aspect of this application provides another fixed optical component for a periscope camera module. In some implementations, the fixed optical component includes a first lens barrel, a second lens barrel, a prism, and a fixed lens. The fixed lens is disposed on the image side of the prism. The prism is installed inside the first lens barrel, and the fixed lens is installed inside the second lens barrel. At least one of the second lens barrel and the fixed lens is connected to at least one of the first lens barrel and the prism.

[0046] The fixed optical component provided in this application embodiment is applied to a periscope camera module. Since a fixed lens, which is a plastic lens with optical power, is bonded to the image side of the prism via a first adhesive, the fixed optical component possesses optical power and thus has the refractive power to deflect light. This allows more light to enter the periscope camera module using the fixed optical component, effectively increasing the light intake and expanding the field of view. Because the fixed lens is a plastic lens, it is easy to design aspherical surfaces, facilitating manufacturing. Since at least one of the second lens barrel and the fixed lens is connected to at least one of the first lens barrel and the prism, the assembly of the prism and the fixed lens is convenient, resulting in high assembly efficiency and stability.

[0047] In some implementations, the first lens barrel and the second lens barrel are integrally formed to constitute an integrally formed component.

[0048] In some implementations, one of the first and second lens barrels is provided with a limiting structure, which is located between the fixed lens and the prism.

[0049] In some implementations, a pressure ring is installed inside the second lens barrel. The pressure ring is located on the image side of the fixed lens and is used to confine the fixed lens inside the second lens barrel.

[0050] In some implementations, the first lens barrel has a receiving cavity, and a first opening and a second opening communicating with the receiving cavity. The prism is installed in the receiving cavity, with the object side of the prism facing the first opening and the image side of the prism facing the second opening. The second lens barrel extends into the second opening and is bonded to the image side of the prism.

[0051] In some implementations, a third adhesive-containing area and a first adhesive-blocking structure are provided on the side of the second lens tube facing the prism, with the third adhesive-containing area located on the side of the first adhesive-blocking structure away from the optical axis.

[0052] In some implementations, a fourth adhesive region is formed between the image side of the first lens barrel and the object side of the second lens barrel.

[0053] In some implementations, the first lens barrel has a receiving cavity, a first opening and a second opening communicating with the receiving cavity, a prism is installed in the receiving cavity, the object side of the prism is opposite to the first opening and the image side of the prism is opposite to the second opening; the second lens barrel has a body part and a positioning part, the positioning part is located on the object side of the body part and inside the second opening, and the fourth adhesive-containing area is located between the body part and the image side of the first lens barrel.

[0054] In some implementations, a fifth adhesive-containing area is provided on the side of the first lens tube facing the prism, and the prism is bonded to the first lens tube.

[0055] This application provides a camera module, which includes a substrate, an image sensor, and the aforementioned optical lens.

[0056] The image sensor is mounted on a substrate and has an imaging surface. The optical lens is electrically connected to the substrate, and the image side of the optical lens faces the imaging surface of the image sensor.

[0057] In some implementations, the optical lens satisfies the following relationship: 0.4 < CT MAX / TTL < 0.7. Where TTL is the total optical length of the lens along its own optical axis; CT MAX It is the maximum value of the distance between any two adjacent elements in the five components of the first fixed lens group, the second fixed lens group, the image stabilization lens group, the focusing lens group, and the image sensor, along the direction of extension of the optical axis of the optical lens.

[0058] In some implementations, the optical lens satisfies the following relationship: 2.5 < CT MAX / EPD < 4.5. Where EPD is the entrance pupil diameter of the optical lens; CT MAX It is the maximum value of the distance between any two adjacent elements in the five components of the first fixed lens group, the second fixed lens group, the image stabilization lens group, the focusing lens group, and the image sensor, along the direction of extension of the optical axis of the optical lens.

[0059] This application provides an electronic device, which includes a housing, a motherboard, and the aforementioned camera module. Both the motherboard and the camera module are housed within the housing, and the camera module is electrically connected to the motherboard. Attached Figure Description

[0060] Figure 1 is a schematic diagram of the overall structure of the electronic device provided in an embodiment of this application;

[0061] Figure 2 is an exploded view of the electronic device in Figure 1;

[0062] Figure 3 is a structural schematic diagram of a camera module provided in an embodiment of this application;

[0063] Figure 4 is an exploded view of the camera module in Figure 3;

[0064] Figure 5 is a schematic diagram showing the relative positions of the lens module and the image sensor;

[0065] Figure 6 is a schematic diagram of the structure of an optical lens provided in an embodiment of this application;

[0066] Figure 7 is a schematic diagram of another optical lens provided in an embodiment of this application;

[0067] Figure 8 is a structural schematic diagram of another optical lens provided in an embodiment of this application;

[0068] Figure 9 is a schematic diagram of the structure of another optical lens provided in an embodiment of this application;

[0069] Figure 10 is a schematic diagram of the structure of another optical lens provided in an embodiment of this application;

[0070] Figure 11 is a schematic diagram of the structure of another optical lens provided in an embodiment of this application;

[0071] Figure 12 is a schematic diagram of the optical lens provided in Example 1;

[0072] Figure 13 is a graph of the astigmatism field after light passes through the optical lens in Example 1.

[0073] Figure 14 shows the distortion curve of light after passing through the optical lens in Example 1;

[0074] Figure 15 is a schematic diagram of the optical lens provided in Example 2;

[0075] Figure 16 is a graph of the astigmatism field after the light passes through the optical lens in Example 2.

[0076] Figure 17 shows the distortion curve of light after passing through the optical lens in Example 2;

[0077] Figure 18 is a graph of the astigmatism field after light passes through the optical lens in Example 3;

[0078] Figure 19 shows the distortion curve of light after passing through the optical lens in Example 3;

[0079] Figure 20 is a graph of the astigmatism field after the light passes through the optical lens in Example 4.

[0080] Figure 21 shows the distortion curve of light after passing through the optical lens in Example 4;

[0081] Figure 22 is a schematic diagram of the optical lens provided in Example 5;

[0082] Figure 23 is a graph of the astigmatism field after the light passes through the optical lens in Example 5.

[0083] Figure 24 is a distortion curve of light after passing through the optical lens in Example 5;

[0084] Figure 25 is a schematic diagram of the optical lens provided in Example 6;

[0085] Figure 26 is a graph of the astigmatism curve after light passes through the optical lens in Example 6;

[0086] Figure 27 shows the distortion curve of light after passing through the optical lens in Example 6;

[0087] Figure 28 is a schematic diagram of the structure of the electronic device provided in an embodiment of this application;

[0088] Figure 29 is a cross-sectional view at point AA in Figure 28;

[0089] Figure 30 is a schematic diagram of the structure of the fixed optical component provided in the first embodiment of this application;

[0090] Figure 31 is an enlarged view of point B in Figure 30;

[0091] Figure 32 is a schematic diagram of the structure of the first lens in the fixed optical assembly provided in the first embodiment of this application;

[0092] Figure 33 is a schematic diagram of the structure of the second lens in the fixed optical assembly provided in the first embodiment of this application;

[0093] Figure 34 is a second structural schematic diagram of the fixed optical component provided in the first embodiment of this application;

[0094] Figure 35 is a schematic diagram of the structure of the first lens barrel in the fixed optical assembly provided in the first embodiment of this application;

[0095] Figure 36 is a second schematic diagram of the structure of the first lens barrel in the fixed optical assembly provided in the first embodiment of this application;

[0096] Figure 37 is a schematic diagram of the structure of the fixed optical component provided in the first embodiment of this application;

[0097] Figure 38 is a schematic diagram of the fixed optical component with a chamfered lens provided in the first embodiment of this application;

[0098] Figure 39 is a schematic diagram of the structure of the fixed optical component provided in the second embodiment of this application;

[0099] Figure 40 is a schematic diagram of the structure of the fixed optical component provided in the second embodiment of this application;

[0100] Figure 41 is a cross-sectional view at CC in Figure 40;

[0101] Figure 42 is a schematic diagram of the integrally formed component of the first lens barrel and the second lens barrel in the fixed optical assembly provided in the second embodiment of this application;

[0102] Figure 43 is a schematic diagram of the integrally formed component of the first lens barrel and the second lens barrel in the fixed optical assembly provided in the second embodiment of this application;

[0103] Figure 44 is an exploded view of the fixed optical assembly provided in the second embodiment of this application;

[0104] Figure 45 is a schematic diagram of the structure of the fixed optical component provided in the third embodiment of this application;

[0105] Figure 46 is an exploded view of the fixed optical assembly provided in the third embodiment of this application;

[0106] Figure 47 is a second structural schematic diagram of the fixed optical component provided in the third embodiment of this application;

[0107] Figure 48 is a cross-sectional view at point DD in Figure 47;

[0108] Figure 49 is a cross-sectional view of EE in Figure 47;

[0109] Figure 50 is a schematic diagram of the structure of the fixed optical component provided in the fourth embodiment of this application;

[0110] Figure 51 is an exploded view of the fixed optical assembly provided in the fourth embodiment of this application;

[0111] Figure 52 is a second structural schematic diagram of the fixed optical component provided in the fourth embodiment of this application;

[0112] Figure 53 is an enlarged view of point F in Figure 52;

[0113] Figure 54 is a cross-sectional view at point GG in Figure 52;

[0114] Figure 55 is a structural schematic diagram of the periscope camera module provided in the fifth embodiment of this application. Detailed Implementation

[0115] To make the purpose, technical solution, and advantages of this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0116] In the description of this application, it should be clarified that the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," and "horizontal," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are merely for the convenience of describing this application, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this application. Similarly, the term "quantity" should not be construed as a limitation of this application.

[0117] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0118] For ease of understanding, the technical terms used in this application will be explained and described below.

[0119] The object side and the object-side surface are defined by the lens / lens group. The side where the subject is located is the object side, and the surface of the lens / lens group that is closer to the object side can be called the object-side surface.

[0120] The image side and the image-side surface are defined by the lens / lens group. The side where the image of the subject is located is called the image side, and the surface of the lens / lens group that is closer to the image side can be called the image-side surface.

[0121] Focal length, also known as focal length, is a measure of the convergence or divergence of light in an optical system. It refers to the perpendicular distance from the optical center of a lens or lens group to the focal plane when a distant object is focused into a sharp image. From a practical perspective, it can be understood as the distance from the center of the lens to the film plane. For prime lenses, the position of their optical center remains constant; for zoom lenses, changes in the lens's optical center result in changes in the focal length.

[0122] Aperture is a device used to control the amount of light passing through the lens and entering the imaging plane inside the camera body; it is usually located inside the lens. Aperture size is expressed as F / number.

[0123] The aperture F-number is a relative value derived from the lens's focal length and the diameter of the light passing through it (the reciprocal of the relative aperture). A smaller F-number allows more light to enter the lens in the same unit of time. A larger F-number results in a shallower depth of field, blurring the background and creating an effect similar to a telephoto lens.

[0124] Optical power is equal to the difference between the convergence of the image-side beam and the convergence of the object-side beam; it characterizes the ability of an optical system to deflect light rays. When the refractive index of air is approximately assumed to be 1, optical power is generally expressed as the reciprocal of the image-side focal length.

[0125] A lens with positive optical power has a positive focal length and has the effect of converging light.

[0126] A lens with negative optical power has a negative focal length and has the effect of diverging light.

[0127] Total track length (TTL) refers to the total length from the center of the object side of the first lens to the center of the image side of the last lens, and is the main factor that determines the height of the camera module.

[0128] The optical axis is the direction in which light rays travel through an optical system, and is referenced to the principal ray at the center of the field of view. For symmetrical transmission systems, it generally coincides with the rotation center line of the optical system.

[0129] The focal point is the point where parallel light rays converge after being refracted by a lens or lens group.

[0130] The Abbe number, also known as the dispersion coefficient, is the ratio of the difference in refractive index of an optical material at different wavelengths, representing the degree of dispersion of the material.

[0131] The entrance pupil is the common entrance for light beams emitted from all points on the surface of an object.

[0132] The entrance pupil diameter is the effective aperture that restricts the incident light beam.

[0133] An aperture diaphragm is a device used to control the amount of light passing through the lens and entering the sensor inside the camera body; it is usually located inside the lens.

[0134] Field curvature, also known as image field bending, is a phenomenon in optical systems where the intersection of the entire light beam does not coincide with the ideal image point. Although a clear image point can be obtained at each specific point, the entire image plane is a curved surface. This makes it impossible to see the entire image plane clearly during microscopic examination, causing difficulties for observation and photography.

[0135] Distortion, also known as distortion, is the degree of distortion in the image formed by an optical system relative to the object itself. Distortion occurs due to the spherical aberration of the aperture; the height of the intersection point between the principal ray from different fields of view and the Gaussian image plane is not equal to the ideal image height, and this difference is the distortion. Therefore, distortion only changes the imaging position of an off-axis object point on the ideal plane, causing distortion in the image shape, but it does not affect the image's sharpness.

[0136] A cemented doublet lens is a lens formed by cementing two lenses together, with the radii of curvature of the cemented surfaces being equal, or one of the surfaces being flat. This type of combined lens, formed by two lenses, is an effective method for achieving short focal lengths, high magnification, and good image quality.

[0137] Telephoto lenses, also known as telescopic lenses or telephoto lenses, are essential for photographing distant objects. They effectively capture details of distant scenes and can photograph subjects that are difficult to approach. Especially in wildlife photography, a suitable telephoto lens can provide photographers with numerous creative opportunities. However, due to their long focal length, telephoto lenses require significant axial space for optical path adjustments, resulting in an excessively large overall optical length. This makes it difficult to miniaturize the lens design, thus hindering the trend towards thinner and lighter mobile electronic devices.

[0138] Based on this, embodiments of this application provide an electronic device. Specifically, the electronic device can be a portable electronic device or other types of electronic devices. For example, the electronic device can be a mobile phone, tablet personal computer, laptop computer, personal digital assistant (PDA), monitor, camera, personal computer, laptop computer, wearable device, etc. For ease of explanation, the following description uses a mobile phone as an example.

[0139] Please refer to Figures 1 and 2. Figure 1 is a schematic diagram of the overall structure of the electronic device 01 provided in this embodiment, and Figure 2 is an exploded view of the electronic device 01 in Figure 1. As can be seen from the above, in this embodiment, the electronic device 01 is a mobile phone, and the electronic device 01 can have an approximately rectangular plate-like structure. The electronic device 01 may include a display module 10, a housing 20, a camera module 30, a motherboard 40, and a camera decorative cover 50.

[0140] For ease of description below, an XYZ coordinate system is established, defining the width direction of electronic device 01 as the X-axis, the length direction of electronic device 01 as the Y-axis, and the thickness direction of electronic device 01 as the Z-axis. Therefore, this application does not impose any special limitations on these aspects. It is understood that Figures 1 and 2 only schematically illustrate some components included in electronic device 10, and the actual shape, size, position, and construction of these components are not limited by Figures 1 and 2. In some other examples, electronic device 10 may not include the camera decorative cover 50.

[0141] The aforementioned display module 10 is used to display images, videos, etc. The display module 10 may include a light-transmitting cover 11 and a display screen 12 (also known as a display panel), with the light-transmitting cover 11 and the display screen 12 stacked together. The material of the light-transmitting cover 11 includes, but is not limited to, glass. For example, the light-transmitting cover 11 can be a common light-transmitting cover to protect the display screen from damage caused by external forces and to provide dust protection. Alternatively, the light-transmitting cover 11 can also be a touch-sensitive cover to enable the electronic device 01 to have touch functionality, thus making it more convenient for users. Therefore, this application does not specifically limit the material of the light-transmitting cover 11.

[0142] Furthermore, the aforementioned display screen 12 can be a flexible display screen or a rigid display screen. For example, the aforementioned display screen 12 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini light-emitting diode display screen, a micro light-emitting diode display screen, a micro organic light-emitting diode display screen, a quantum dot light-emitting diode (QLED) display screen, a liquid crystal display (LCD), etc.

[0143] The aforementioned housing 20 is used to protect the electronic components inside the electronic device 01. The housing 20 may include a rear cover 21 and a frame 22. The rear cover 21 is located on the side of the display screen 12 away from the light-transmitting cover plate 11 and is stacked with the light-transmitting cover plate 11 and the display screen 12. The frame 22 is located between the light-transmitting cover plate 11 and the rear cover 21. The frame 22 is fixed to the rear cover 21. The light-transmitting cover plate 11 is fixed to the frame 22, so that the light-transmitting cover plate 11, the rear cover 21, and the frame 22 form an internal cavity for the electronic device 01, within which the display screen 12, the motherboard 40, and the camera module 30 are all housed.

[0144] The aforementioned motherboard 40 is used to set up the electronic components of the electronic device 10 and to realize the electrical connection between the electronic components. For example, the electronic components may be control chips (e.g., system-on-chip, SOC), graphics processing units (GPUs), universal flash storage (UFS), earpieces, flash modules, and the aforementioned camera module 30, etc.

[0145] The aforementioned camera module 30 is used to capture video or images. The camera module 30 can be either upright or periscope-style. For example, please refer to Figures 3 and 4. Figure 3 is a schematic diagram of the structure of a camera module 30 provided in an embodiment of this application. Figure 4 is an exploded view of the camera module 30 in Figure 3.

[0146] The camera module 30 may include a substrate 31, an image sensor 32, a lens module 34, and a housing 35. The housing 35 is fixed to the substrate 31, and the lens module 34 is located inside the housing 35 and electrically connected to the substrate 31. The image sensor 32 is disposed on the substrate 31 and has an imaging surface 32a. One end of the flexible printed circuit board 33 (FPC) is electrically connected to the substrate 31, and the other end of the flexible printed circuit board 33 is used for electrical connection to the aforementioned mainboard 40.

[0147] For example, the camera module 30 can be a telephoto camera, meaning its lens module 34 is a telephoto lens with a focal length greater than that of a standard lens. Therefore, the camera module 30 can capture images of distant objects or scenes, broadening the shooting scenarios for the electronic device 01 and improving the user experience.

[0148] The camera module 30 has an object-side side and an image-side side. The object-side side can be the object-side side of the lens module 34 inside the camera module 30, and the image-side side can be the image-side side of the lens module 34 inside the camera module 30. The object-side side of the lens module 34 faces the rear cover 21, and the image-side side of the lens module 34 faces the imaging surface 32a of the image sensor 32. The rear cover 21 has a mounting notch (not shown in Figure 2), and the camera decorative cover 50 (as shown in Figure 2) is fixed in the mounting notch. The camera decorative cover 50 has a light-transmitting window. The object side of the lens module 34 faces the light-transmitting window, allowing external light to pass through the light-transmitting window and enter the lens module 34 from the object side. Then, it exits from the image side of the lens module 34 and illuminates the image sensor 32. The image sensor 32 then converts the received light signal into a digital signal and outputs it to a digital signal processor (DSP) for image signal enhancement and compression optimization. Finally, it is transmitted to the display screen 12 shown in Figure 2 to display the image.

[0149] It should be noted that in the aforementioned camera module 30, the optical axis of the lens module 34 (dashed line in Figure 4) can be parallel to the thickness direction (i.e., the Z-axis direction) of the aforementioned electronic device 01, and the distribution direction of the substrate 31 and the flexible circuit board 33 can be parallel to the width direction (i.e., the X-axis direction) of the electronic device 01. The direction perpendicular to these two directions in the camera module 30 is parallel to the length direction (i.e., the Y-axis direction) of the electronic device 01. It is understood that the aforementioned arrangement of the camera module 30 is merely an example; the camera module 30 can also be arranged within the housing of the electronic device 01 in other ways.

[0150] Furthermore, the camera module 30 of the aforementioned electronic device 01 can also achieve autofocus (AF) and optical image stabilization (OIS), thereby enabling the camera module 30 to be suitable for various shooting scenarios. Specifically, the camera module 30 may also include a driving component (not shown in FIG. 4), which is disposed within the housing 35. For example, the driving component may be a voice coil motor (VCM).

[0151] The driving component is connected to the lens module 34. Please refer to Figure 5, which is a schematic diagram of the relative positions of the lens module 34 and the image sensor 32 (parallel to the XZ plane). The driving component can drive the lens module 34 to move along the Z-axis, thereby adjusting the distance between the lens module 34 and the imaging surface 32a of the image sensor 32, so that the light emitted from the lens module 34 is focused on the imaging surface 32a, achieving autofocus. The driving component can also drive the lens module 34 to move in a direction perpendicular to the Z-axis (i.e., parallel to the XY plane) to compensate for camera shake during shooting, thereby achieving optical image stabilization.

[0152] However, since the driving component moves the entire lens module 34 along the Z-axis when focusing, the rated load of the driving component is large. To meet the load requirements, a large driving component is generally used, which increases the size of the camera module 30 and is not conducive to the thinning and lightening of the electronic device 01.

[0153] Similarly, when performing image stabilization compensation, the driving component pushes the entire lens module 34 to move in a direction perpendicular to the Z-axis (parallel to the XY plane). This requires the driving component to have a large rated load. In order to meet the load requirements, a larger driving component is generally used, which increases the size of the camera module 30 and is not conducive to the thinning and lightening of the electronic device 01.

[0154] Furthermore, due to the large size of the telephoto lens, the driving components of the camera module 30 need to have a large stroke when focusing on the lens module 34. This results in a further increase in the overall size of the camera module 30, which also affects the focusing accuracy and consequently the performance of the camera module 30.

[0155] To address the aforementioned issues, this application provides an optical lens 36, which can be applied to the camera module 30 described above. Please refer to Figure 6, which is a structural schematic diagram (parallel to the XZ plane) of an optical lens 36 provided in this application embodiment. The optical lens 36 includes a first fixed lens group 361, a second fixed lens group 362, an image stabilization lens group 363, and a focusing lens group 364 arranged along the optical axis 360 of the optical lens 36.

[0156] In this configuration, the second fixed lens group 362, the image stabilization lens group 363, and the focusing lens group 364 are all located on the image side of the first fixed lens group 361, with at least one of the image stabilization lens group 363 and the focusing lens group 364 located between the first fixed lens group 361 and the second fixed lens group 362. For example, in Figure 6, the first fixed lens group 361, the image stabilization lens group 363, the focusing lens group 364, and the second fixed lens group 362 are arranged sequentially along the optical axis 360 of the optical lens 36.

[0157] Furthermore, the first fixed lens group 361 includes at least one lens with optical power. The second fixed lens group 362 includes at least one lens with optical power. The image stabilization lens group 363 includes at least one lens with optical power. The focusing lens group 364 includes at least one lens with optical power. Thus, the lenses of the optical lens 36 are divided into multiple lens groups for achieving different functions.

[0158] In this way, by setting up separate image stabilization lens group 363 and focusing lens group 364, the driving component only needs to move the image stabilization lens group 363 during image stabilization compensation and the focusing component only needs to move the image stabilization lens group 363 during focusing. That is, compared to moving the entire optical lens 36, the driving force required to drive a single image stabilization lens group 363 and a single focusing lens group 364 is less, thus placing a lower load on the driving component. This means that a smaller driving component can be used, which helps to reduce the size of the camera module 30.

[0159] In addition, the optical lens 36 also includes a first fixed lens group 361 and a second fixed lens group 362. The first fixed lens group 361 can concentrate light rays, thereby reducing the aperture of other lens groups on the image side of the first fixed lens group 361, which helps to reduce the size of the optical lens 36. The second fixed lens group 362 can compensate for aberrations of the optical lens 36 to a certain extent, correct its distortion and field curvature, which helps to improve image quality.

[0160] In some possible implementations, please continue to refer to Figure 6. The first fixed lens group 361 may consist of a plurality of spaced lenses, at least one of which has optical power. For example, the first fixed lens group 361 in Figure 6 includes a first lens 36a and a second lens 36b, both of which have optical power. The first lens 36a and the second lens 36b can be used to converge light rays, that is, the optical axis 360 of the optical lens 36 extends in one direction, so that the optical lens 36 can be applied to a vertical camera module 30.

[0161] In some possible implementations, please refer to Figure 7, which is a schematic diagram of another optical lens 36 provided in an embodiment of this application (parallel to the XZ plane). The first fixed lens group 361 may include a reflecting prism 3653 and at least one lens with optical power. For example, the first fixed lens group 361 in Figure 7 includes a first lens 36a, a second lens 36b, and a reflecting prism 3653, both of which have optical power. The first lens 36a is disposed on the object side of the reflecting prism 3653, and the second lens 36b is located on the image side of the reflecting prism 3653. With this structure, the first fixed lens group 361 can concentrate light through the first lens 36a, and the reflecting prism 3653 enables the first fixed lens group 361 to change the propagation direction of light, that is, the optical axis 360 of the optical lens 36 is changed by the reflecting prism 3653, so that the optical lens 36 can be applied to the periscope camera module 30. The second lens 36b can further concentrate the light rays reflected by the reflecting prism 3653.

[0162] The subsequent lens groups can further refract the light, thereby further adjusting the propagation path of the light to concentrate the light, which helps to reduce the size of the subsequent lens groups.

[0163] In some possible implementations, at least one of the image stabilization lens group 363, the focusing lens group 364, and the second fixed lens group 362 contains a cemented doublet lens. For example, referring to Figure 7, the focusing lens group 364 in Figure 7 consists of two lenses, a third lens 36c and a fourth lens 36d. The image-side surface of the third lens 36c and the object-side surface of the fourth lens 36d are both spherical with equal radii of curvature. The image-side surface of the third lens 36c and the object-side surface of the fourth lens 36d are bonded together by a light-transmitting adhesive. This design minimizes light energy loss when light passes through the cemented doublet lens, and the cemented doublet lens can also correct spherical aberration, coma, and chromatic aberration to a certain extent, thereby improving image quality.

[0164] To further reduce the size of the optical lens 36, please refer to Figure 8, which is a schematic diagram of another optical lens 36 provided in this application embodiment (parallel to the XZ plane). The optical lens 36 may also include a light-deflecting component 365. The light-deflecting component 365 is located on the image side of the first fixed lens group 361. In this way, the light-deflecting component 365 can bend and fold the optical axis 360 of the optical lens 36. That is, the light-deflecting component 365 can convert the thickness of the optical lens 36 along the Z-axis into a length parallel to the XY plane, allowing the optical lens 36 to achieve a telephoto effect while maintaining a small thickness, which is beneficial for the thinning and lightening of the electronic device 01.

[0165] It is understandable that the light deflection component 365 can be set as one or multiple components can be set in the optical path of the optical lens 36. The appropriate component can be selected according to actual needs. This allows for more flexible setting of the relative positions of the first fixed lens group 361, the image stabilization lens group 363, the focusing lens group 364, and the image sensor 32 (i.e., the imaging surface 32a), thereby increasing the applicable scenarios of the optical lens 36.

[0166] The light-deflecting component 365 can be a reflector, a reflecting prism, etc., and this application does not make any special limitations on it.

[0167] For example, please refer to Figure 8. The optical lens in Figure 8 is equivalent to the optical lens in Figure 6 above, with the addition of a light-deflecting component 365. The light-deflecting component 365 is a reflecting prism, located on the object side of the first fixed lens group 361. Light rays enter the light-deflecting component 365 along the Z-axis, and after reflection, enter the first fixed lens group 361 along the X-axis.

[0168] For example, please refer to Figure 9, which is a structural schematic diagram (parallel to the XZ plane) of another optical lens 36 provided in an embodiment of this application. The optical lens in Figure 9 is equivalent to adding a light-deflecting component 365 to the optical lens in Figure 6 above. The light-deflecting component 365 is located between the image-stabilizing lens group 363 and the focusing lens group 364, and consists of a first mirror 3651 and a second mirror 3652. Light emitted from the image-stabilizing lens group 363 is first reflected by the first mirror 3651 to the second mirror 3652, and then reflected by the second mirror 3652 to the focusing lens group 364.

[0169] For example, please refer to Figure 10, which is a schematic diagram of another optical lens 36 provided in an embodiment of this application. The optical lens in Figure 10 is equivalent to adding a light-deflecting component 365 to the optical lens in Figure 7 above. The light-deflecting component 365 consists of a first mirror 3651 and a second mirror 3652, and is located between the image stabilization lens group 363 and the focusing lens group 364.

[0170] Light rays enter the first lens 36a of the first fixed lens group 361 along the Z-axis direction, and then, after being reflected by the reflecting prism 3653, travel along the X-axis direction from the second lens 36b to the first reflector 3651 of the light-transforming component 365. After being reflected by the first reflector 3651 to the second reflector 3652, and then reflected by the second reflector 3652, travel along the Y-axis direction to the third lens 36c of the focusing lens group 364.

[0171] For example, please refer to Figure 11, which is a structural schematic diagram of another optical lens 36 provided in an embodiment of this application. The optical lens in Figure 11 is equivalent to adding two light-reflecting components 365 to the optical lens in Figure 6 above, namely a first light-reflecting component 365a and a second light-reflecting component 365b. The first light-reflecting component 365a is a reflecting prism, which is disposed on the object side of the first fixed lens group 361. The second light-reflecting component 365b consists of a first mirror 3651 and a second mirror 3652, and is located between the image stabilizing lens group 363 and the focusing lens group 364.

[0172] Light rays enter the first light-reflecting component 365a along the Z-axis. After being reflected by the first light-reflecting component 365a, they enter the first fixed lens group 361 along the X-axis, and are then refracted by the first fixed lens group 361 into the image-stabilizing lens group 363. The light rays emitted from the image-stabilizing lens group 363 are first reflected by the first mirror 3651 of the second light-reflecting component 365b onto the second mirror 3652, and then reflected by the second mirror 3652 into the focusing lens group 364 along the Z-axis.

[0173] In some possible implementations, please continue to refer to Figures 6 through 11. The optical lens 36 may also include an infrared filter 366. The infrared filter 366 is located on the image side of the last lens in the optical lens 36. For example, in Figure 10, the infrared filter 366 is located between the second fixed lens group 362 and the imaging surface 32a. Using the infrared filter 366 can effectively filter out infrared light, allowing only visible light to enter the imaging surface 32a, thereby improving image quality and sharpness. Furthermore, it can prevent infrared light from generating heat on the imaging surface 32a, thus avoiding the impact of infrared light on image quality and sharpness.

[0174] In some possible embodiments, the optical lens 36 may also include an aperture stop (not shown in Figures 6 to 11). The aperture stop may be disposed on the object side of the first fixed lens group 361. Alternatively, the aperture stop may extend around the object side of the first fixed lens group 361, for example, the aperture stop may be at the edge of the object side of the first lens 36a in the first fixed lens group 361. With this configuration, the aperture stop can improve the sharpness of the image, control the range of the image object space, and control the brightness of the image plane. Furthermore, by adjusting the size of the aperture stop, a larger entrance pupil diameter can be obtained, thereby achieving a larger aperture and diffraction limit value without changing the focal length of the optical lens 36, which is beneficial for improving the image quality of the optical lens 36.

[0175] In some possible implementations, the optical lens 36 satisfies the following relationship: 0.4 < CT MAX / TTL < 0.7. For example, CT MAXThe value of / TTL can be 0.41, 0.43, 0.45, 0.46, 0.471, 0.48, 0.5, 0.511, 0.526, 0.532, 0.54, 0.542, 0.551, 0.56, 0.57, 0.59, 0.6, 0.62, 0.621, 0.65, 0.68, 0.683, 0.692, etc.

[0176] Where TTL stands for the total optical length of the 3636 optical lens. CT MAX It is the maximum value of the distance between any two adjacent elements in the five elements of the first fixed lens group 361, the second fixed lens group 362, the image stabilization lens group 363, the focusing lens group 364, and the image sensor 32, along the direction of extension of the optical axis 360 of the optical lens 36.

[0177] The above relationship is achieved by controlling the CT scan. MAX A / TTL value higher than the lower limit of 0.4 ensures sufficient space between adjacent lens groups in the optical lens 36 for installing the light deflector 365. (Controlling CT) MAX A / TTL value less than the upper limit of 0.8 is beneficial to ensuring the imaging quality of the optical system.

[0178] In some possible implementations, the optical lens 36 also satisfies the following relationship: 0.4 < EFL / TTL < 0.8. For example, the value of EFL / TTL can be 0.41, 0.45, 0.485, 0.51, 0.52, 0.526, 0.531, 0.535, 0.54, 0.57, 0.58, 0.595, 0.6, 0.61, 0.65, 0.68, 0.691, 0.7, 0.705, 0.71, 0.73, 0.75, 0.77, 0.78, 0.795, etc.

[0179] Where EFL is the system focal length of optical lens 36. The above relationship limits the range of the ratio of system focal length to total length of optical lens 36, which is beneficial to improving the resolving power of optical lens 36.

[0180] In some possible implementations, the optical lens 36 also satisfies the following relationship: 3.1 < FNO < 4.5. For example, the value of FNO can be 3.2, 3.22, 3.28, 3.35, 3.4, 3.43, 3.46, 3.5, 3.59, 3.6, 3.67, 3.72, 3.77, 3.82, 3.9, 3.98, 4, 4.1, 4.2, 4.3, 4.31, 4.4, 4.45, 4.49, etc. Where FNO is the aperture value of the optical lens 36.

[0181] The above relationship limits the aperture value range of the optical lens 36, which helps to ensure that the optical lens 36 has high imaging quality while also having a small size and good light intake performance.

[0182] In some possible implementations, the optical lens 36 satisfies the following relationship: 0.1 < F1 / EFL < 1. For example, the value of f1 / EFL can be 0.11, 0.132, 0.153, 0.16, 0.167, 0.2, 0.241, 0.25, 0.27, 0.3, 0.35, 0.4, 0.41, 0.42, 0.43, 0.452, 0.475, 0.59, 0.61, 0.7, 0.71, 0.75, 0.8, 0.802, 0.85, 0.89, 0.9, 0.91, 0.94, 0.971, 0.988, etc. Where F1 is the focal length of the first fixed lens group 361.

[0183] The above relationship limits the range of the ratio between the focal length of the first fixed lens group 361 and the focal length of the optical lens 36 system, thereby reasonably allocating the optical power of the first fixed lens group 361, making it easier to control the direction of light after entering the first fixed lens group 361 and to converge the light, which is beneficial to reducing the aperture size of subsequent lens groups.

[0184] In some possible implementations, the optical lens 36 also satisfies the following relationship: EFL AF / EFL < 0.6. For example, EFL AF The value of / EFL can be 0.05, 0.1, 0.13, 0.157, 0.18, 0.2, 0.22, 0.28, 0.291, 0.3, 0.311, 0.335, 0.4, 0.42, 0.45, 0.5, 0.53, 0.543, 0.57, 0.59, etc. Among them, EFL... AF This is the focal length of the focusing lens group 364.

[0185] The above relationship limits the range of the ratio between the focal length of the focusing lens group 364 and the focal length of the optical lens system 36, thereby reasonably allocating the optical power of the focusing lens group 364, which can reduce the travel of the focusing lens group 364 when moving to focus, and also reduce the tolerance sensitivity of the focusing lens group 364.

[0186] In some possible implementations, the optical lens 36 also satisfies the following relationship: -4 < EFL OIS / EFL < 4. For example, EFL OISThe / EFL value can be -3.9, -3.65, -3.1, -2.85, -2.3, -2.11, -2, -1.9, -1.8, -1.5, -1.4, -1.22, -1.1, -1.069, -1, -0.9, -0.787, -0.712, -0.5, 0, 0.5, 0.8, 1, 1.254, 1.456, 1.6, 1.8, 1.85, 1.9, 2, 2.11, 2.3, 2.85, 3.1, 3.65, 3.95, etc. Among them, EFL... OIS The focal length of the image-stabilized lens group is 363.

[0187] The above relationship limits the range of the ratio between the focal length of the image stabilization lens group 363 and the focal length of the optical lens system 36, thereby reasonably allocating the optical power of the image stabilization lens group 363, which can reduce the movement of the image stabilization lens group 363 when performing image stabilization compensation, and also reduce the tolerance sensitivity of the image stabilization lens group 363.

[0188] In some possible implementations, the optical lens 36 also satisfies the following relationship: 0.01 < CT AF / TTL < 0.2. For example, CT AF The / TTL value can be 0.02, 0.04, 0.05, 0.06, 0.08, 0.09, 0.1, 0.115, 0.122, 0.131, 0.135, 0.138, 0.14, 0.142, 0.144, 0.15, 0.156, 0.159, 0.16, 0.168, 0.17, 0.174, 0.179, 0.194, etc. Among them, CT... AF The center thickness of the focusing lens group 364 is located along the optical axis 360 of the optical lens 36.

[0189] The above relationship limits the range of the ratio between the center thickness of the focusing lens group 364 and the total optical length of the optical lens 36, which is beneficial to reduce the overall length of the focusing lens group 364, that is, to reduce the size of the focusing lens group 364, thereby reducing the load on the voice coil motor and improving the life and response speed of the voice coil motor.

[0190] In some possible implementations, the optical lens 36 also satisfies the following relationship: 0.01 < CT OIS / TTL < 0.2. For example, CT OISThe / TTL value can be 0.015, 0.02, 0.03, 0.049, 0.05, 0.06, 0.08, 0.089, 0.95, 0.1, 0.117, 0.126, 0.13, 0.135, 0.138, 0.14, 0.1491, 0.1495, 0.151, 0.156, 0.159, 0.165, 0.169, 0.17, 0.173, 0.179, 0.18, 0.19, etc. Among them, CT... OIS The center thickness of the image stabilization lens group 363 in the direction of the extended optical axis 360 of the optical lens 36.

[0191] The above relationship limits the range of the ratio between the center thickness of the image stabilization lens group 363 and the total optical length of the optical lens 36, which is beneficial to reduce the overall length of the image stabilization lens group 363, that is, to reduce the size of the image stabilization lens group 363, thereby reducing the load on the drive components and improving the lifespan and response speed of the drive components.

[0192] In some possible implementations, the optical lens 36 also satisfies the following relationship: 2.5 < CT MAX / EPD < 4.5. For example, CT. MAX The / EPD value can be 2.53, 2.6, 2.65, 2.683, 2.7, 2.75, 2.8, 2.917, 3, 3.1, 3.128, 3.22, 3.24, 3.255, 3.27, 2.29, 3.3, 3.311, 3.324, 3.34, 3.36, 3.365, 3.38, 3.4, 3.422, 3.45, 3.8, 4, 4.15, 4.34, 4.49, etc. Here, EPD represents the entrance pupil diameter of the optical lens 36.

[0193] The above relationship limits the range of the ratio of the maximum center distance between two adjacent lens groups in the optical lens 36 to the entrance pupil diameter, so as to add a light deflection component 365 (such as a mirror, a reflecting prism, etc.) between the two lens groups, thereby further reducing the size of the optical lens 36.

[0194] It is understandable that the aforementioned center thickness and the distance between two adjacent lens groups are based on the point through which the optical axis 360 passes. That is, the distance through which the optical axis 360 passes through the lens group is the center thickness of the lens group, and the length of the optical axis 360 between two adjacent lens groups is the distance between the two adjacent lens groups.

[0195] Based on this, the following is an example of a camera module 30 that uses the above-mentioned optical lens 36 (all optical lenses 36 satisfy the above relationship).

[0196] Example 1

[0197] Example 1 of this application provides a camera module 30, which includes an optical lens 36. Please refer to Figure 12, which is a schematic diagram of the structure of the optical lens 36 provided in Example 1. The optical lens 36 includes a first fixed lens group 361, an image stabilization lens group 363, a focusing lens group 364, a second fixed lens group 362, and an infrared filter 366, which are sequentially distributed along the optical axis 360 of the optical lens 36.

[0198] The first fixed lens group 361 comprises three lenses: a first lens 36a, a second lens 36b, and a third lens 36c. The first lens 36a has an object-side surface S1 and an image-side surface S2, and the edge of the object-side surface S1 of the first lens 36a serves as the aperture stop of the optical lens 36. The second lens 36b has an object-side surface S3 and an image-side surface S4. The third lens 36c has an object-side surface S5 and an image-side surface S6.

[0199] The image stabilization lens group 363 comprises two lenses, namely a fourth lens 36d and a fifth lens 36e. The fourth lens 36d and the fifth lens 36e are cemented together to form a cemented doublet lens. In this case, the fourth lens 36d has an object-side surface S7, and the fifth lens 36e has an image-side surface S9. The image-side surface of the fourth lens 36d and the object-side surface of the fifth lens 36e are cemented together to form a shared cementing surface S8.

[0200] The focusing lens group 364 has only one lens, namely the sixth lens 36f, which has an object side surface S10 and an image side surface S11.

[0201] The second fixed lens group 362 includes two lenses, namely the seventh lens 36g and the eighth lens 36h. The seventh lens 36g and the eighth lens 36h are cemented together to form a cemented doublet lens. At this time, the seventh lens 36g has an object-side surface S12, the eighth lens 36h has an image-side surface S14, and the image-side surface of the seventh lens 36g and the object-side surface of the eighth lens 36h are cemented together to form a common cementing surface S13.

[0202] The infrared filter 366 has an object side surface S15 and an image side surface S16.

[0203] Table 1a below shows the design parameters for each lens and filter 366 in Example 1, as follows:

[0204] Table 1a

[0205] The sagitta of the aspherical surface in each of the above lens groups can be calculated using the following formula:

[0206] Where Z is the sag of the aspherical surface, r is the radial coordinate of the aspherical surface, c is the curvature of the sphere at a fixed point on the aspherical surface, K is the quadratic surface constant, and A i Let A1 be the i-th order aspherical constant. Table 1b below gives the coefficients k, A2, A4, A6, A8, A10, A12, A14, A16, and A18 that can be used for the aspherical surface types of each lens group in Example 1.

[0207] Table 1b

[0208] Table 1c below shows the basic parameters of the optical lens 36 in Example 1, as follows:

[0209] Table 1c

[0210] Additionally, in Example 1, the maximum value CT of the distance between any two adjacent elements among the five components—the first fixed lens group 361, the second fixed lens group 362, the image stabilization lens group 363, the focusing lens group 364, and the image sensor 32—extending along the optical axis 360 of the optical lens 36. MAX It is 36.040 mm. That is, in this example, CT MAX The distance is the center of the image side surface S9 of the fifth lens 36e in the image stabilization lens group 363 to the center of the object side surface S10 of the sixth lens 36f in the focusing lens group 364.

[0211] The focal length (EFL) of the focusing lens group 364 AF The focal length is 19.249mm. The image-stabilized lens group 363 has an EFL focal length of... OIS It is -27.925mm.

[0212] The focal length F1 of the first fixed lens group 361 is 36.768mm.

[0213] The center thickness CT of the focusing lens group 364 along the optical axis 360 of the optical lens 36 AF It is 2.258 mm. That is, in this example, CT AF It is the distance from the center of the object side surface S10 to the center of the image side surface S11 of the sixth lens 36f in the focusing lens group 364.

[0214] The center thickness CT of the image stabilization lens group 363 along the optical axis 360 of the optical lens 36 OIS It is 1.919 mm. That is, in this example, CT OIS The distance is the distance from the center of the object side surface S7 of the fourth lens 36d in the image-stabilizing lens group 363 to the center of the image side surface S9 of the fifth lens 36e.

[0215] The total optical length (TTL) of the optical lens 36 is 65.754 mm. That is, in this example, TTL is the distance from the center of the object side surface S1 of the first lens 36a in the first fixed lens group 361 to the center of the image side surface S16 of the infrared filter 366.

[0216] Based on the values ​​of the above parameters, it can be calculated that in this example:

[0217] CT MAX / TTL = 0.569; F1 / EFL = 0.869; EFL AF / EFL = 0.458; EFL OIS / EFL = -0.628;

[0218] CT AF / TTL=0.023; CT OIS / TTL=0.039; EFL / TTL=0.700; CT MAX / EPD=3.072.

[0219] As can be seen, the values ​​of all the conditional expressions in this example are within the aforementioned limits.

[0220] Please refer to Figure 13, which shows the astigmatism curve after light passes through the optical lens 36 in Example 1. The horizontal axis represents the focus shift, the vertical axis represents the image height, and the reference wavelength of the light is 546 nm. The solid line X represents the focus shift curve in the meridional direction, and the dashed line Y represents the focus shift curve in the sagittal direction. As can be seen from Figure 13, the focus shifts in both the meridional and sagittal directions are controlled within the range of -0.01 mm to 0. The meridional and sagittal curves are quite similar, meaning that the optical lens 36 in Example 1 has low astigmatism, enabling it to focus most of the light onto the correct focus point, resulting in a clearer and sharper image.

[0221] Please refer to Figure 14, which is a distortion curve of light after passing through the optical lens 36 in Example 1. The horizontal axis represents the distortion rate, the vertical axis represents the image height, and the reference wavelength of the light is 546 nm. As can be seen from Figure 14, the distortion rate is controlled within the range of -2% to 0, meaning that the image captured by the optical lens 36 in Example 1 has a small degree of distortion and low distortion.

[0222] Example 2

[0223] Example 2 of this application provides a camera module 30, which includes an optical lens 36. Please refer to Figure 15, which is a schematic diagram of the structure of the optical lens 36 provided in Example 2. The optical lens 36 includes a first fixed lens group 361, an image stabilization lens group 363, a focusing lens group 364, a second fixed lens group 362, and an infrared filter 366, which are sequentially distributed along the optical axis 360 of the optical lens 36.

[0224] The first fixed lens group 361 comprises three lenses: a first lens 36a, a second lens 36b, and a third lens 36c. The first lens 36a has an object-side surface S1 and an image-side surface S2, and the edge of the object-side surface S1 of the first lens 36a serves as the aperture stop of the optical lens 36. The second lens 36b has an object-side surface S3 and an image-side surface S4. The third lens 36c has an object-side surface S5 and an image-side surface S6.

[0225] The image stabilization lens group 363 comprises two lenses, namely a fourth lens 36d and a fifth lens 36e. The fourth lens 36d and the fifth lens 36e are cemented together to form a cemented doublet lens. In this case, the fourth lens 36d has an object-side surface S7, and the fifth lens 36e has an image-side surface S9. The image-side surface of the fourth lens 36d and the object-side surface of the fifth lens 36e are cemented together to form a shared cementing surface S8.

[0226] The focusing lens group 364 comprises two lenses, namely the sixth lens 36f and the seventh lens 36g. The sixth lens 36f and the seventh lens 36g are cemented together to form a cemented doublet lens. At this time, the sixth lens 36f has an object-side surface S10, the seventh lens 36g has an image-side surface S12, and the object-side surface of the sixth lens 36f is cemented together with the image-side surface of the fifth lens 36e to form a shared cementing surface S11.

[0227] The second fixed lens group 362 includes two lenses, namely the eighth lens 36h and the ninth lens 36i. The eighth lens 36h and the ninth lens 36i are cemented together to form a cemented doublet lens. At this time, the eighth lens 36h has an object-side surface S13, and the ninth lens 36i has an image-side surface S15. The image-side surface of the eighth lens 36h and the object-side surface of the ninth lens 36i are cemented together to form a common cementing surface S14.

[0228] The infrared filter 366 has an object side surface S16 and an image side surface S17.

[0229] Table 2a below shows the design parameters for each lens and infrared filter 366 in Example 2, as follows:

[0230] Table 2a

[0231] The sagitta of the aspherical surface in each of the above lens groups can be calculated using the following formula:

[0232] Where Z is the sag of the aspherical surface, r is the radial coordinate of the aspherical surface, c is the curvature of the sphere at a fixed point on the aspherical surface, K is the quadratic surface constant, and A i Let A1 be the i-th order aspherical constant. Table 2b below gives the coefficients k, A2, A4, A6, A8, A10, A12, A14, A16, and A18 that can be used for the aspherical surface types of each lens group in Example 2.

[0233] Table 2b

[0234] Table 2c below shows the basic parameters of the optical lens 36 in Example 2, as follows:

[0235] Table 2c

[0236] Additionally, in Example 2, the maximum value CT of the distance between any two adjacent elements among the five components—the first fixed lens group 361, the second fixed lens group 362, the image stabilization lens group 363, the focusing lens group 364, and the image sensor 32—extending along the optical axis 360 of the optical lens 36. MAX It is 37.3825 mm. That is, in this example, CT MAX The distance is the center of the image side surface S9 of the fifth lens 36e in the image stabilization lens group 363 to the center of the object side surface S10 of the sixth lens 36f in the focusing lens group 364.

[0237] The focal length (EFL) of the focusing lens group 364 AF The focal length (EFL) of the 363mm image-stabilized lens group is 21.066mm. OIS The focal length (F1) is -28.907mm. The focal length (F1) of the first fixed lens group 361 is 39.963mm.

[0238] The center thickness CT of the focusing lens group 364 along the optical axis 360 of the optical lens 36 AF It is 1.526 mm. That is, in this example, CT AF It is the distance from the center of the object side surface S10 of the sixth lens 36f in the focusing lens group 364 to the center of the image side surface S12 of the seventh lens 36g.

[0239] The center thickness CT of the image stabilization lens group 363 along the optical axis 360 of the optical lens 36 OIS It is 2.595mm. That is, in this example, CT OIS The distance is the distance from the center of the object side surface S7 of the fourth lens 36d in the image-stabilizing lens group 363 to the center of the image side surface S9 of the fifth lens 36e.

[0240] The total optical length (TTL) of the optical lens 36 is 65.754 mm. That is, in this example, TTL is the distance from the center of the object side surface S1 of the first lens 36a in the first fixed lens group 361 to the center of the image side surface S17 of the infrared filter 366.

[0241] Based on the values ​​of the parameters mentioned above, it can be calculated that in this example,

[0242] CT MAX / TTL = 0.569; F1 / EFL = 0.869; EFL AF / EFL = 0.458; EFL OIS / EFL = -0.628;

[0243] CT AF / TTL=0.023; CT OIS / TTL=0.039; EFL / TTL=0.700; CT MAX / EPD=3.072.

[0244] As can be seen, the values ​​of all the conditional expressions in this example are within the aforementioned limits.

[0245] Please refer to Figure 16, which shows the astigmatism curves after light passes through the optical lens 36 in Example 2. The horizontal axis represents the focus shift, the vertical axis represents the image height, and the reference wavelength of the light is 546 nm. The solid line X represents the focus shift curve in the meridional direction, and the dashed line Y represents the focus shift curve in the sagittal direction. As can be seen from Figure 16, the focus shift in the meridional direction is controlled within the range of -0.01 mm to 0.005 mm, and the focus shift in the sagittal direction is controlled within the range of -0.02 mm to 0.005 mm. The meridional and sagittal curves are quite close, meaning that the astigmatism of the optical lens 36 in Example 2 is relatively small, enabling most of the light to converge at the correct focus point, resulting in a clearer and sharper image.

[0246] Please refer to Figure 17, which is a distortion curve of light after passing through the optical lens 36 in Example 2. The horizontal axis represents the distortion rate, the vertical axis represents the image height, and the reference wavelength of the light is 546 nm. As can be seen from Figure 17, the distortion rate is controlled within the range of -2% to 0, meaning that the image captured by the optical lens 36 in Example 2 has a small degree of distortion and low distortion.

[0247] Example 3

[0248] Please refer back to Figure 15. The structure of the optical lens 36 in the camera module 30 provided in Example 3 of this application is the same as that in Example 2 above, except that the design parameters of the lens and infrared filter 366 are slightly different, which will not be described again here.

[0249] Table 3a below shows the design parameters for each lens and infrared filter 366 in Example 3, as follows:

[0250] Table 3a

[0251] The sagitta of the aspherical surface in each of the above lens groups can be calculated using the following formula:

[0252] Where Z is the sag of the aspherical surface, r is the radial coordinate of the aspherical surface, c is the curvature of the sphere at a fixed point on the aspherical surface, K is the quadratic surface constant, and A i Let A1 be the i-th order aspherical constant. Table 3b below gives the coefficients k, A2, A4, A6, A8, A10, A12, A14, A16, and A18 that can be used for the aspherical surface types of each lens group in Example 3.

[0253] Table 3b

[0254] Table 3c below shows the basic parameters of the optical lens 36 in Example 3, as follows:

[0255] Table 3c

[0256] Additionally, in Example 3, the maximum value CT of the distance between any two adjacent elements among the five components—the first fixed lens group 361, the second fixed lens group 362, the image stabilization lens group 363, the focusing lens group 364, and the image sensor 32—extending along the optical axis 360 of the optical lens 36. MAX It is 38.819mm.

[0257] The focal length (EFL) of the focusing lens group 364 AF The focal length (EFL) of the 363mm image-stabilized lens group is 17.661mm. OIS The focal length F1 of the first fixed lens group 361 is -34.991mm. The focal length F1 of the first fixed lens group 361 is 40.636mm. The center thickness CT of the focusing lens group 364 along the optical axis 360 of the optical lens 36 is... AF The thickness is 3.299mm. The center thickness CT of the image stabilization lens group 363 along the optical axis 360 of the optical lens 36 is [missing information]. OIS The optical length is 1.400mm. The total optical length (TTL) of the optical lens 36 is 66.330mm.

[0258] Based on the values ​​of the parameters mentioned above, it can be calculated that in this example,

[0259] CT MAX / TTL = 0.586; F1 / EFL = 0.856; EFL AF / EFL=0.372; EFL OIS / EFL = -0.737;

[0260] CT AF / TTL=0.050; CT OIS / TTL = 0.021; EFL / TTL = 0.716; CT MAX / EPD=3.089.

[0261] As can be seen, the values ​​of all the conditional expressions in this example are within the aforementioned limits.

[0262] Please refer to Figure 18, which shows the astigmatism curves after light passes through the optical lens 36 in Example 3. The horizontal axis represents the focus shift, the vertical axis represents the image height, and the reference wavelength of the light is 546 nm. The solid line X represents the focus shift curve in the meridional direction, and the dashed line Y represents the focus shift curve in the sagittal direction. As can be seen from Figure 18, the focus shift in both the meridional and sagittal directions is controlled within the range of -0.02 mm to 0. The meridional and sagittal curves are quite close, meaning that the optical lens 36 in Example 3 has low astigmatism, enabling it to focus most of the light onto the correct focus point, resulting in a clearer and sharper image.

[0263] Referring to Figure 19, which is a distortion curve of light after passing through the optical lens 36 in Example 3, the horizontal axis represents the distortion rate, the vertical axis represents the image height, and the reference wavelength of the light is 546 nm. As can be seen from Figure 19, the distortion rate is controlled within the range of -2% to 0, meaning that the image captured by the optical lens 36 in Example 3 has a small degree of distortion and low distortion.

[0264] Example 4

[0265] Please refer back to Figure 15. The structure of the optical lens 36 in the camera module 30 provided in Example 4 of this application is the same as that in Example 2 above, except that the design parameters of the lens and infrared filter 366 are slightly different, which will not be described again here.

[0266] Table 4a below shows the design parameters for each lens and infrared filter 366 in Example 4, as follows:

[0267] Table 4a

[0268] The sagitta of the aspherical surface in each of the above lens groups can be calculated using the following formula:

[0269] Where Z is the sag of the aspherical surface, r is the radial coordinate of the aspherical surface, c is the curvature of the sphere at a fixed point on the aspherical surface, K is the quadratic surface constant, and Ai Let A1 be the i-th order aspherical constant. Table 4b below gives the coefficients k, A2, A4, A6, A8, A10, A12, A14, A16, and A18 that can be used for the aspherical surface types of each lens group in Example 4.

[0270] Table 4b

[0271] Table 4c below shows the basic parameters of the optical lens 36 in Example 4, as follows:

[0272] Table 4c

[0273] Additionally, in Example 4, the maximum value CT of the distance between any two adjacent elements among the five components—the first fixed lens group 361, the second fixed lens group 362, the image stabilization lens group 363, the focusing lens group 364, and the image sensor 32—extends along the optical axis 360 of the optical lens 36. MAX It is 38.531mm.

[0274] The focal length (EFL) of the focusing lens group 364 AF The focal length (EFL) of the 363mm image-stabilized lens group is 17.688mm. OIS The focal length F1 of the first fixed lens group 361 is -36.079mm. The focal length F1 of the first fixed lens group 361 is 38.987mm. The center thickness CT of the focusing lens group 364 along the optical axis 360 of the optical lens 36 is... AF The thickness is 3.221mm. The center thickness CT of the image stabilization lens group 363 along the optical axis 360 of the optical lens 36 is [missing information]. OIS It is 1.550mm. The total optical length (TTL) of the optical lens 36 is 66.180mm.

[0275] Based on the values ​​of the above parameters, it can be calculated that in this example, CT... MAX / TTL = 0.582; F1 / EFL = 0.821; EFL AF / EFL=0.372; EFL OIS / EFL = -0.760; CT AF / TTL=0.049; CT OIS / TTL = 0.023; EFL / TTL = 0.718; CT MAX / EPD=2.990.

[0276] As can be seen, the values ​​of all the conditional expressions in this example are within the aforementioned limits.

[0277] Please refer to Figure 20, which shows the astigmatism curve after light passes through the optical lens 36 in Example 4. The horizontal axis represents the focus shift, the vertical axis represents the image height, and the reference wavelength of the light is 546 nm. The solid line X represents the focus shift curve in the meridional direction, and the dashed line Y represents the focus shift curve in the sagittal direction. As can be seen from Figure 20, the focus shift in the meridional direction is controlled within the range of -0.008 mm to 0, and the focus shift in the sagittal direction is controlled within the range of -0.008 mm to 0.004 mm. The meridional and sagittal curves are quite close, meaning that the astigmatism of the optical lens 36 in Example 4 is relatively small, enabling it to focus most of the light onto the correct focus point, resulting in a clearer and sharper image.

[0278] Please refer to Figure 21, which is a distortion curve of light after passing through the optical lens 36 in Example 4. The horizontal axis represents the distortion rate, the vertical axis represents the image height, and the reference wavelength of the light is 546 nm. As can be seen from Figure 21, the distortion rate is controlled within the range of -2% to 0, meaning that the image captured by the optical lens 36 in Example 4 has a small degree of distortion and low distortion.

[0279] Example 5

[0280] Example 5 of this application provides a camera module 30, which includes an optical lens 36. Please refer to Figure 22, which is a schematic diagram of the structure of the optical lens 36 provided in Example 5. The optical lens 36 includes a first fixed lens group 361, an image stabilization lens group 363, a focusing lens group 364, a second fixed lens group 362, and an infrared filter 366, which are sequentially distributed along the optical axis 360 of the optical lens 36.

[0281] The first fixed lens group 361 comprises two lenses, namely a first lens 36a and a second lens 36b. The first lens 36a has an object-side surface S1 and an image-side surface S2, and the edge of the object-side surface S1 of the first lens 36a serves as the aperture stop of the optical lens 36. The second lens 36b has an object-side surface S3 and an image-side surface S4.

[0282] The image stabilization lens group 363 comprises two lenses: a third lens 36c and a fourth lens 36d. The third lens 36c has an object-side surface S5 and an image-side surface S6. The fourth lens 36d has an object-side surface S7 and an image-side surface S8.

[0283] The focusing lens group 364 comprises two lenses, namely the fifth lens 36e and the sixth lens 36f. The fifth lens 36e has an object-side surface S9 and an image-side surface S10. The sixth lens 36f has an object-side surface S11 and an image-side surface S12.

[0284] The second fixed lens group 362 has only one lens, namely the seventh lens 36g, which has an object side surface S13 and an image side surface S14.

[0285] The infrared filter 366 has an object side surface S15 and an image side surface S16.

[0286] Table 5a below shows the design parameters for each lens and infrared filter 366 in Example 5, as follows:

[0287] Table 5a

[0288] The sagitta of the aspherical surface in each of the above lens groups can be calculated using the following formula:

[0289] Where Z is the sag of the aspherical surface, r is the radial coordinate of the aspherical surface, c is the curvature of the sphere at a fixed point on the aspherical surface, K is the quadratic surface constant, and A i Let A1 be the i-th order aspherical constant. Table 5b below gives the coefficients k, A2, A4, A6, A8, A10, A12, A14, and A16 that can be used for the aspherical surface types of each lens group in Example 5.

[0290] Table 5b

[0291] Table 5c below shows the basic parameters of the optical lens 36 in Example 5, as follows:

[0292] Table 5c

[0293] Additionally, in Example 5, the maximum value CT of the distance between any two adjacent elements among the five components—the first fixed lens group 361, the second fixed lens group 362, the image stabilization lens group 363, the focusing lens group 364, and the image sensor 32—extending along the optical axis 360 of the optical lens 36. MAX It is 39.229 mm. That is, in this example, CT MAX The distance is the center of the image side surface S8 of the fourth lens 36d in the image stabilization lens group 363 to the center of the object side surface S9 of the fifth lens 36e in the focusing lens group 364.

[0294] The focal length (EFL) of the focusing lens group 364 AF The focal length is 22.743mm. The image-stabilized lens group has a focal length of 363 EFL. OIS The focal length is 101.252mm. The focal length F1 of the first fixed lens group 361 is 40.210mm.

[0295] The center thickness CT of the focusing lens group 364 along the optical axis 360 of the optical lens 36 AFIt is 3.564 mm. That is, in this example, CT AF It is the distance from the center of the object side surface S9 of the fifth lens 36e in the focusing lens group 364 to the center of the image side surface S12 of the sixth lens 36f.

[0296] The center thickness CT of the image stabilization lens group 363 along the optical axis 360 of the optical lens 36 OIS It is 2.929 mm. That is, in this example, CT OIS The distance is the distance from the center of the object side surface S5 of the third lens 36c in the image stabilization lens group 363 to the center of the image side surface S8 of the fourth lens 36d.

[0297] The total optical length (TTL) of the optical lens 36 is 68.178 mm. That is, in this example, TTL is the distance from the center of the object side surface S1 of the first lens 36a in the first fixed lens group 361 to the center of the image side surface S16 of the infrared filter 366.

[0298] Based on the values ​​of the parameters mentioned above, it can be calculated that in this example,

[0299] CT MAX / TTL = 0.575; F1 / EFL = 0.856; EFL AF / EFL = 0.484; EFL OIS / EFL = 2.155;

[0300] CT AF / TTL=0.052; CT OIS / TTL = 0.043; EFL / TTL = 0.689; CT MAX / EPD = 2.672.

[0301] As can be seen, the values ​​of all the conditional expressions in this example are within the aforementioned limits.

[0302] Please refer to Figure 23, which shows the astigmatism curve after light passes through the optical lens 36 in Example 5. The horizontal axis represents the focus shift, the vertical axis represents the image height, and the reference wavelength of the light is 546 nm. The solid line X represents the focus shift curve in the meridional direction, and the dashed line Y represents the focus shift curve in the sagittal direction. As can be seen from Figure 23, the focus shift in the meridional direction is controlled within the range of -0.016 mm to 0.008 mm, and the focus shift in the sagittal direction is controlled within the range of -0.02 mm to 0. The meridional and sagittal curves are quite close, meaning that the optical lens 36 in Example 5 has low astigmatism, enabling it to focus most of the light onto the correct focus point, resulting in a clearer and sharper image.

[0303] Please refer to Figure 24, which is a distortion curve of light after passing through the optical lens 36 in Example 5. The horizontal axis represents the distortion rate, the vertical axis represents the image height, and the reference wavelength of the light is 546 nm. As can be seen from Figure 24, the distortion rate is controlled within the range of -2% to 0.4%, meaning that the image captured by the optical lens 36 in Example 5 has a small degree of distortion and low distortion.

[0304] Example 6

[0305] Example 6 of this application provides a camera module 30, which includes an optical lens 36. Please refer to Figure 25, which is a schematic diagram of the structure of the optical lens 36 provided in Example 6. The optical lens 36 includes a first fixed lens group 361, an image stabilization lens group 363, a focusing lens group 364, a second fixed lens group 362, and an infrared filter 366, which are sequentially distributed along the optical axis 360 of the optical lens 36.

[0306] The first fixed lens group 361 comprises three lenses: a first lens 36a, a second lens 36b, and a third lens 36c. The first lens 36a and the second lens 36b are cemented together to form a cemented doublet lens, and the second lens 36b and the third lens 36c are also cemented together to form a cemented doublet lens. In this case, the first lens 36a has an object-side surface S1, and the edge of the object-side surface S1 of the first lens 36a serves as the aperture stop of the optical lens 36. The image-side surface of the first lens 36a is cemented with the object-side surface of the second lens 36b to form a shared cementing surface S2. The image-side surface of the second lens 36b is cemented with the object-side surface of the third lens 36c to form a shared cementing surface S3. The third lens 36c has an image-side surface S4.

[0307] The image stabilization lens group 363 comprises two lenses, namely the fourth lens 36d and the fifth lens 36e. The fourth lens 36d has an object-side surface S5 and an image-side surface S6. The fifth lens 36e has an object-side surface S7 and an image-side surface S8.

[0308] The focusing lens group 364 comprises two lenses, namely the sixth lens 36f and the seventh lens 36g. The sixth lens 36f has an object-side surface S9 and an image-side surface S10. The seventh lens 36g has an object-side surface S11 and an image-side surface S12.

[0309] The second fixed lens group 362 has only one lens, namely the eighth lens 36h, which has an object side surface S13 and an image side surface S14.

[0310] The infrared filter 366 has an object side surface S15 and an image side surface S16.

[0311] Table 6a below shows the design parameters for each lens and infrared filter 366 in Example 6, as follows:

[0312] Table 6a

[0313] The sagitta of the aspherical surface in each of the above lens groups can be calculated using the following formula:

[0314] Where Z is the sag of the aspherical surface, r is the radial coordinate of the aspherical surface, c is the curvature of the sphere at a fixed point on the aspherical surface, K is the quadratic surface constant, and A i Let A1 be the i-th order aspherical constant. Table 6b below gives the coefficients k, A2, A4, A6, A8, A10, A12, A14, and A16 that can be used for the aspherical surface types of each lens group in Example 6.

[0315] Table 6b

[0316] Table 6c below shows the basic parameters of the optical lens 36 in Example 6, as follows:

[0317] Table 6c

[0318] Additionally, in Example 6, the maximum value CT of the distance between any two adjacent elements of the five components—the first fixed lens group 361, the second fixed lens group 362, the image stabilization lens group 363, the focusing lens group 364, and the image sensor 32—extends along the optical axis 360 of the optical lens 36. MAX It is 49.793 mm. That is, in this example, CT MAX The distance is the center of the image side surface S8 of the fifth lens 36e in the image stabilization lens group 363 to the center of the object side surface S9 of the sixth lens 36f in the focusing lens group 364.

[0319] The focal length (EFL) of the focusing lens group 364 AF The focal length is 23.093mm. The image-stabilized lens group has a focal length of 363 EFL. OIS The focal length is 125.124mm. The focal length F1 of the first fixed lens group 361 is 46.715mm.

[0320] The center thickness CT of the focusing lens group 364 along the optical axis 360 of the optical lens 36 AF It is 3.724 mm. That is, in this example, CT AF It is the distance from the center of the object side surface S9 of the sixth lens 36f in the focusing lens group 364 to the center of the image side surface S12 of the seventh lens 36g.

[0321] The center thickness CT of the image stabilization lens group 363 along the optical axis 360 of the optical lens 36 OIS It is 1.648 mm. That is, in this example, CT... OISThe distance is the distance from the center of the object side surface S5 of the fourth lens 36d in the image stabilization lens group 363 to the center of the image side surface S8 of the fifth lens 36e.

[0322] The total length (TTL) of the optical lens 36 along its own optical axis 360 is 77.139 mm. That is, in this example, TTL is the distance from the center of the object side surface S1 of the first lens 36a in the first fixed lens group 361 to the center of the image side surface S16 of the infrared filter 366.

[0323] Based on the values ​​of the above parameters, it can be calculated that in this example, CT... MAX / TTL = 0.646; F1 / EFL = 0.953; EFL AF / EFL = 0.471; EFL OIS / EFL = 2.553; CT AF / TTL=0.048; CT OIS / TTL = 0.021; EFL / TTL = 0.635; CT MAX / EPD=4.263.

[0324] It is evident that the values ​​of all conditional expressions in this practical example are within the aforementioned limits.

[0325] Please refer to Figure 26, which shows the astigmatism curves after light passes through the optical lens 36 in Example 6. The horizontal axis represents the focus shift, the vertical axis represents the image height, and the reference wavelength of the light is 546 nm. The solid line X represents the focus shift curve in the meridional direction, and the dashed line Y represents the focus shift curve in the sagittal direction. As can be seen from Figure 26, the focus shift in the meridional direction is controlled within the range of -0.2 mm to 0.02 mm, and the focus shift in the sagittal direction is controlled within the range of -0.03 mm to -0.01 mm. The meridional and sagittal curves are quite close, meaning that the optical lens 36 in Example 6 has low astigmatism, enabling it to focus most of the light onto the correct focus point, resulting in a clearer and sharper image.

[0326] Please refer to Figure 27, which is a distortion curve of light after passing through the optical lens 36 in Example 6. The horizontal axis represents the distortion rate, the vertical axis represents the image height, and the reference wavelength of the light is 546 nm. As can be seen from Figure 27, the distortion rate is controlled within the range of -2% to 3%, meaning that the image captured by the optical lens 36 in Example 6 has a relatively small degree of distortion.

[0327] As shown in Figures 28 and 29, this embodiment of the application provides an electronic device 1, including a housing 20 and a periscope camera module 10. The periscope camera module 10 is mounted on the housing 20 and includes a fixed optical component 100 and a photosensitive element 300, with the photosensitive element 300 disposed on the image side of the fixed optical component 100. In this embodiment, the thickness direction of the electronic device 1 is the Z-axis direction, the length direction of the electronic device 1 is the X-axis direction, and the width direction of the electronic device 1 is the Y-axis direction.

[0328] Electronic device 1 includes a housing 20, a display screen 30, and a periscope camera module 10. As shown in FIG29, in some embodiments, the housing 20 includes a frame 21 and a back cover 22. The frame 21 and the back cover 22 can be integrally formed or assembled into an integral structure. The display screen 30 and the back cover 22 are respectively mounted on both sides of the frame 21, together enclosing an accommodating space, in which the periscope camera module 10 is housed.

[0329] In some embodiments, the electronic device 1 further includes a processor (not shown), which is housed within a receiving space. The processor is communicatively connected to the periscope camera module 10. The processor acquires image data from the periscope camera module 10, processes the image data, and then transmits the processed signal to a display. The communication connection between the periscope camera module 10 and the processor can include data transmission via electrical connections such as wiring, or via coupling. It is understood that the periscope camera module 10 and the processor can also be connected via other methods capable of data transmission.

[0330] In this embodiment, a camera hole is provided on the rear cover 22, and the periscope camera module 10 collects light through the camera hole. The periscope camera module 10 serves as the rear camera of the electronic device 1. Specifically, the periscope camera module 10 in this application can be installed in the upper left corner, the upper middle, or the upper right corner of the back of the electronic device 1, etc., without specific limitations.

[0331] In addition to being installed on the back of the electronic device 1 and used as a rear camera, the periscope camera module 10 can also be used as a front camera of the electronic device 1, without any specific limitation.

[0332] Of course, the periscope camera module 10 can be directly mounted on the electronic device 1, or it can be detachably connected to the electronic device 1 via an auxiliary component, which facilitates the assembly and disassembly of the periscope camera module 10. The auxiliary component can rotate or move relative to the electronic device 1, and the auxiliary component and the electronic device 1 can be detachably connected by screws, snaps, or other means, without any specific limitations.

[0333] In some embodiments, the periscope camera module 10 includes a fixed optical component 100, an adjustable optical component 200, and a photosensitive element 300, wherein the adjustable optical component 200 is located on the image side of the fixed optical component 100, and the photosensitive element 300 is located on the image side of the fixed optical component 100.

[0334] The periscope camera module 10 works as follows: light reflected from the subject passes through the fixed optical component 100 and the adjustable optical component 200 to generate an optical image, which is then projected onto the photosensitive surface of the photosensitive element 300. The photosensitive element 300 converts the optical image into an electrical signal, i.e., an analog image signal, and transmits it to the processor. It can be understood that the photosensitive element 300 is essentially the same as the image sensor 32 in the aforementioned embodiment, and the photosensitive surface of the photosensitive element 300 is equivalent to the imaging surface 32a of the sensor 32.

[0335] The periscope camera module 10 can effectively reduce the longitudinal dimension of the fixed optical component 100 along the optical axis. When the periscope camera module 10 is placed in the housing 20, it occupies only the space along the thickness direction of the electronic device 1, thus making it more suitable for use in thin electronic devices 1. The periscope camera module 10 mainly utilizes the refraction principle of lenses for imaging, that is, light from the scene passes through the fixed optical component 100 to form a clear image on the focal plane, and the image of the scene is recorded by the photosensitive element 300 located on the focal plane.

[0336] First Embodiment

[0337] As shown in Figures 30 and 31, this embodiment provides a fixed optical component 100, which is applied to a periscope camera module 10. The fixed optical component 100 includes a prism L1 and a fixed lens. The fixed lens is disposed on the image side of the prism L1 and is a plastic lens with optical power. At least one of the object side of the fixed lens and the image side of the prism L1 is provided with a first adhesive-containing area 111. A first adhesive is disposed in the first adhesive-containing area 111. The fixed lens and the prism L1 are connected through the first adhesive.

[0338] In this embodiment, the surface of each lens closest to the object side is the object side surface, and the surface of each lens closest to the image side is the image side surface.

[0339] Prism L1 is used to deflect light rays. Prism L1 includes an object-side surface, a reflecting surface, and an image-side surface. Light rays from the object-side surface, which are to be photographed, can enter prism L1 along the optical axis O from the object-side surface. The light rays entering prism L1 can be reflected by the reflecting surface. The reflecting surface is used to reflect the light rays incident from the object-side surface to the image-side surface. The light rays exit from the image-side surface of prism L1 along the optical axis O, thereby achieving light deflection. For example, light rays can be incident into prism L1 along the thickness direction of electronic device 1. After being deflected by prism L1, the light rays can propagate along the length or width direction of electronic device 1, thereby allowing the fixed optical component 100 to occupy a smaller space in the thickness direction of electronic device 1.

[0340] The reflecting surface of prism L1 is a plane. The object-side surface of prism L1 can be curved or a plane, and the image-side surface of prism L1 can be curved or a plane. The curved surface can be spherical or aspherical. Prism L1 has optical power when at least one of its object-side and image-side surfaces is curved. Prism L1 does not have optical power when both its object-side and image-side surfaces are planes.

[0341] Prism L1 can be made of glass or plastic.

[0342] In Figure 30, the number of fixed lenses can be one, two, or more. When there is only one fixed lens, it is referred to as the first lens L2. The first lens L2 is bonded to the image side of the prism L1 by a first adhesive. The first adhesive is disposed in the first adhesive-containing area 111, and the first adhesive can be formed by curing an adhesive liquid.

[0343] It is understood that in some possible implementations, the fixed optical component 100 may serve as the first fixed lens group 361 in the foregoing embodiments, or the fixed optical component 100 may serve as a partial structure of the first fixed lens group 361. For example, when the number of fixed lenses is one (i.e., the fixed lens is referred to as the first lens L2), the first fixed lens group 361 may serve as a partial structure of the first fixed lens group 361 in FIG. 7 or FIG. 10, wherein the prism L1 of the first fixed lens group 361 is equivalent to the reflecting prism 3653 of the first fixed lens group 361, and the first lens L2 of the first fixed lens group 361 is equivalent to the second lens 36b of the first fixed lens group 361.

[0344] The first adhesive-receiving area 111 can be a planar structure or a grooved structure. For example, when the first adhesive-receiving area 111 is a planar structure, the planar structure is a planar region for applying the adhesive. When the first adhesive-receiving area 111 is a grooved structure, compared to a planar structure, the grooved structure can accommodate more adhesive, thereby forming a relatively thicker first adhesive body to provide better bonding.

[0345] In Figures 30 to 32, the first adhesive-containing area 111 is a groove structure, and the first adhesive-containing area 111 is disposed on the fixed lens. In Figures 30 to 32, the first adhesive-containing area 111 is disposed on the object side of the first lens L2.

[0346] Understandably, in other embodiments, the first adhesive-receiving area 111 may also be provided on the image-side surface of the prism L1. Alternatively, groove structures may be provided on the image-side surface of the prism L1 and the object-side surface of the first lens L2, with the two groove structures engaging and communicating to jointly form the first adhesive-receiving area 111.

[0347] The fixed optical component 100 provided in this embodiment is applied to a periscope camera module 10. Since a fixed lens, which is a plastic lens with optical power, is bonded to the image side of the prism L1 via a first adhesive, the fixed optical component 100 possesses optical power and thus has the refractive power to deflect light. This allows more light to enter the periscope camera module 10, effectively increasing the amount of light received and expanding the field of view. Because the fixed lens is a plastic lens, it is easy to design aspherical surfaces, facilitating manufacturing. Since the fixed lens and prism L1 are connected via the first adhesive, assembly of the prism L1 and the fixed lens is convenient, resulting in high assembly efficiency and stability.

[0348] When the fixed optical component 100 is applied to the periscope camera module 10, the periscope camera module 10 may be equipped with an image stabilization structure. The image stabilization structure is connected to the fixed optical component 100, and the image stabilization structure can drive the fixed optical component 100 to move in a direction perpendicular to the optical axis to perform image stabilization. In this type of periscope camera module 10, since the fixed optical component 100 uses a fixed lens made of plastic, it is relatively lightweight and requires relatively less driving force, which facilitates improved driving response speed and more effective image stabilization.

[0349] Since the first lens L2 and the prism L1 are bonded together by a first adhesive, the process of connecting the first lens L2 and the prism L1 only requires applying adhesive and bonding. The operation is simple, convenient, efficient and easy to operate.

[0350] Since the first lens L2 and the prism L1 are bonded together by the first adhesive, there is no need to add other auxiliary connection structures, thereby reducing the weight of the fixed optical component 100 and reducing the assembly difficulty.

[0351] As shown in Figures 31 and 32, in some implementations, the first adhesive-containing area 111 includes a first surface 111a and a second surface 111b. The first surface 111a is perpendicular to the optical axis, and the second surface 111b is located at the end of the first surface 111a near the optical axis, and the second surface 111b is inclined relative to the first surface 111a. In this configuration, because the first surface 111a and the second surface 111b are inclined relative to each other, the first adhesive-containing area 111 is a tank structure rather than a simple planar structure, thereby allowing the first adhesive-containing area 111 to accommodate more first adhesive.

[0352] Furthermore, the end of the second surface 111b away from the optical axis is connected to the first surface 111a, and the end of the second surface 111b close to the optical axis is in contact with the image side of the prism L1. During the process of filling the first adhesive area 111 with adhesive to form the first colloid, the second surface 111b plays a blocking role for the adhesive, so as to a certain extent prevent the adhesive from entering the area of ​​the image side of the prism L1 that is closer to the optical axis.

[0353] As shown in Figures 31 and 32, in some implementations, the angle formed between the first surface 111a and the second surface 111b is an obtuse angle. In this configuration, during the filling of the first adhesive region 111 with adhesive, the second surface 111b acts as a guide for the adhesive, causing it to flow towards the image-side surface of the prism L1. Furthermore, in this configuration, the thickness of the adhesive in the optical axis direction gradually decreases from the direction away from the optical axis to the direction closer to the optical axis. That is, the second surface 111b acts as a barrier for the adhesive, thus preventing it from entering the region closer to the optical axis on the image-side surface of the prism L1 to a certain extent.

[0354] As shown in Figure 32, in some implementations, the fixed lens (the fixed lens shown in Figure 32 is the first lens L2) has an effective mirror area 121 and an edge area 122. The edge area 122 surrounds the outer region of the effective mirror area 121, and a first adhesive-coated area 111 is disposed on the object-side side of the fixed lens in the edge area 122. In the fixed lens, the effective mirror area 121 is used for light transmission, and the edge area 122 is used for assembly. By placing the first adhesive-coated area 111 in the edge area 122, the fixed lens can have a relatively more sufficient effective mirror area 121.

[0355] As shown in Figure 33, in some implementations, the first adhesive-containing area 111 is an annular groove coaxial with the fixed lens (the fixed lens shown in Figure 33 is the first lens L2). In this configuration, since the first adhesive is located in the first adhesive-containing area 111, the first adhesive formed within the annular first adhesive-containing area 111 is also annular. The first adhesive is located around the outer peripheral edge of the object-side surface of the fixed lens, thereby improving the connection strength between the fixed lens (the fixed lens shown in Figure 33 is the first lens L2) and the prism L1.

[0356] As shown in Figures 30 and 31, in some implementations, there are multiple fixed lenses arranged sequentially and connected along the object-to-image side. A second adhesive region 112 is provided between two adjacent fixed lenses, and a second adhesive is disposed within the second adhesive region 112. The two adjacent fixed lenses are connected by the second adhesive. For example, the number of fixed lenses can be 2, 3, 4, etc.

[0357] The number of fixed lenses is multiple, and the focal lengths of the multiple fixed lenses are different, so that the combined focal length of the prism L1 and the multiple fixed lenses is different, in order to adapt to the periscope camera module 10 with different needs.

[0358] Adjacent lenses are connected by a second adhesive, making the assembly process simpler and more convenient. The second adhesive is disposed within the second adhesive-containing area 112, and can be formed by curing an adhesive liquid.

[0359] The second adhesive-containing area 112 can be a planar structure or a grooved structure. For example, when the second adhesive-containing area 112 is a planar structure, the planar structure is a planar region for applying the adhesive. When the second adhesive-containing area 112 is a grooved structure, compared to the planar structure, the grooved structure can accommodate more adhesive, thereby forming a relatively thicker first adhesive body to provide better bonding.

[0360] As shown in Figure 31, in some implementations, there are two fixed lenses, namely the first lens L2 and the second lens L3. The second lens L3 is located on the image side of the first lens L2. The first lens L2 has negative optical power, and the second lens L3 has positive optical power.

[0361] In Figure 31, the second adhesive-containing area 112 is a groove structure, and the second adhesive-containing area 112 is located between the first lens L2 and the second lens L3.

[0362] Understandably, in other embodiments, a groove structure may be provided only on the image-side surface of the first lens L2, and the object-side surface of the second lens L3 may be engaged with the opening of the groove structure, so that the groove structure forms the second adhesive-receiving area 112. Alternatively, a groove structure may be provided only on the object-side surface of the second lens L3, and the image-side surface of the first lens L2 may be engaged with the opening of the groove structure, so that the groove structure forms the second adhesive-receiving area 112. Alternatively, groove structures may be provided on both the object-side surface of the second lens L3 and the image-side surface of the first lens L2, and the two groove structures may be engaged and connected to form the second adhesive-receiving area 112.

[0363] As shown in Figures 31 and 32, in some implementations, one of two adjacent fixed lenses has a recess 123 and the other has a protrusion 124. At least a portion of the structure of the recess 123 is located within the recess 123, and the recess 123 and the protrusion 124 define a second adhesive-containing area 112. In this configuration, a portion of the structure of the protrusion 124 extends into the recess 123. The cooperation between the protrusion 124 and the recess 123 allows the two adjacent fixed lenses to be relatively positioned in a direction perpendicular to the optical axis, improving the connection stability between the two adjacent fixed lenses. As shown in Figure 31, the protrusion 124 is provided on the second lens L3, and as shown in Figure 32, the recess 123 is provided on the first lens L2.

[0364] Understandably, in other embodiments, the protrusion 124 may be disposed on the first lens L2, and the recess 123 may be disposed on the second lens L3.

[0365] In some configurations, the protrusion 124 is disposed in the edge region 122 of the fixed lens, and the recess 123 is disposed in the edge region 122 of the fixed lens. As shown in FIG31, the protrusion 124 is disposed in the edge region 122 of the second lens L3, and as shown in FIG32, the recess 123 is disposed in the edge region 122 of the first lens L2.

[0366] As shown in Figure 32, in some implementations, the recess 123 includes a third surface 123a and a fourth surface 123b that are relatively inclined and connected, as shown in Figure 31. The protrusion 124 has a fifth surface 124a and a sixth surface 124b that are relatively inclined and connected. The third surface 123a and the fifth surface 124a are spaced apart from each other, and the fourth surface 123b and the sixth surface 124b are in contact. The third surface 123a, the fourth surface 123b, and the fifth surface 124a surround and form a second adhesive-containing area 112. In this configuration, the third surface 123a, the fourth surface 123b, and the fifth surface 124a all serve as guides for the adhesive. Since the fourth surface 123b is in contact with the sixth surface 124b, it serves as a stop for the adhesive.

[0367] In one specific example, the recess 123 is an annular groove structure, and the protrusion 124 is an annular bump structure (as shown in Figure 33). When the recess 123 is located on the image side and the protrusion 124 is located on the object side, the diameters of the fourth surface 123b and the sixth surface 124b gradually decrease from the object side to the image side. Furthermore, the maximum diameter of the fourth surface 123b is greater than the maximum diameter of the sixth surface 124b. This allows the fourth surface 123b to act as a limiting element for the protrusion 124 during assembly. The difference between the maximum diameters of the fourth and sixth surfaces 123b can be used to control the gap between the third surface 123a and the fifth surface 124a, forming a second adhesive region 112 of a certain thickness at this gap. This allows the thickness of the second adhesive to be controlled according to the required bonding strength.

[0368] As shown in Figures 34 to 36, in some implementations, the fixed optical assembly 100 further includes a first lens barrel 130, which has a receiving cavity 131 and a first opening 132 and a second opening 133 communicating with the receiving cavity 131. A prism L1 is installed in the receiving cavity 131, with the object side of the prism L1 facing the first opening 132 and the image side of the prism L1 facing the second opening 133. A fixed lens (shown as the first lens L2) passes at least partially through the second opening 133 and is connected to the prism L1.

[0369] The first lens tube 130 serves to shield and protect the prism L1. It covers the outer side of the prism L1, ensuring that only the object side and image side of the prism L1 are exposed. The first lens tube 130 also facilitates the mounting of the prism L1 to the designated position on the underwater camera module, enabling connection operations. The first lens tube 130 can be made of plastic, making it relatively lightweight and reducing the overall weight of the fixed optical assembly 100.

[0370] The first opening 132 is used to allow the prism L1 to enter the receiving cavity 131 and to allow light to be incident on the object-side surface of the prism L1. The area of ​​the first opening 132 may be larger than the area of ​​the object-side surface of the prism L1 to facilitate the insertion of the prism L1 into the receiving cavity 131 through the first opening 132. The second opening 133 is used to connect the image-side surface of the prism L1 to the object-side surface of the fixed lens and to allow light to exit from the image-side surface of the prism L1. The area of ​​the second opening 133 is smaller than the area of ​​the image-side surface of the prism L1 to prevent the prism L1 from leaving the receiving cavity 131 through the second opening 133. Exemplarily, the first lens barrel 130 includes a partition portion located in at least a portion of the area outside the second opening 133 away from the optical axis, and the partition portion is used to limit and stop the prism L1.

[0371] The prism L1 and the first lens barrel 130 can be bonded together. For example, the inner wall of the accommodating cavity 131 can be provided with a dispensing groove containing adhesive liquid, and the prism L1 and the first lens barrel 130 are connected by the adhesive liquid.

[0372] The prism L1 and the first lens barrel 130 can be connected by a snap-fit ​​connection. For example, a limiting member can be provided within the first opening 132. This limiting member is connected to the first lens barrel 130 and blocks a portion of the first opening 132, making the exposed area of ​​the first opening 132 smaller than the area of ​​the object side of the prism L1. Thus, the limiting member effectively limits the prism L1, securing it within the receiving cavity 131. It is worth noting that during the assembly process of fixing the optical component 100, the prism L1 is first placed in the receiving cavity 131, and then the limiting member is connected to the first lens barrel 130. The connection between the limiting member and the first lens barrel 130 can be achieved through adhesive bonding, snap-fit ​​connection, bolt connection, etc.

[0373] As shown in Figure 37, the fixed lens provided in this embodiment can be a non-chamfered lens. As shown in Figure 38, the fixed lens provided in this embodiment can also be a chamfered lens. A chamfered lens is one in which a portion of the edge region 122 of the fixed lens is cut off, thereby increasing the proportion of the effective mirror area 121 of the fixed lens, reducing the volume of the fixed lens, and thus reducing the volume of the fixed optical assembly 100. As shown in Figure 38, the opposite sides of the fixed lens in the Z-axis direction are respectively chamfered, and the chamfering direction is perpendicular to the Z-axis direction. This chamfering treatment reduces the size of the fixed lens in the Z-axis direction, thereby making the thickness of the fixed optical assembly 100 smaller, which can be adapted to electronic devices 1 with smaller thickness.

[0374] It is worth noting that a light-shielding coating may be provided on the image side of prism L1, and the light-shielding coating is applied to the area of ​​the image side of prism L1 that is not opposite to the fixed lens.

[0375] Second Embodiment

[0376] As shown in Figures 39 to 54, this application provides another fixed optical component 100 for periscope camera module 10. In some implementations, the fixed optical component 100 includes a first lens barrel 130, a second lens barrel 140, a prism L1, and a fixed lens. The fixed lens is disposed on the image side of the prism L1. The prism L1 is installed inside the first lens barrel 130, and the fixed lens is installed inside the second lens barrel 140. At least one of the second lens barrel 140 and the fixed lens is connected to at least one of the first lens barrel 130 and the prism L1.

[0377] The number of fixed lenses can be one or more. When there is only one fixed lens, it is the first lens L2. When there are multiple fixed lenses, the fixed lens closest to the prism L1 is the first lens L2. At least one of the second lens barrel 140 and the fixed lens is connected to at least one of the first lens barrel 130 and the prism L1, that is, at least one of the second lens barrel 140 and the first lens L2 is connected to at least one of the first lens barrel 130 and the prism L1, including at least the following configuration:

[0378] The second lens tube 140 is connected to the first lens tube 130; the second lens tube 140 is not connected to the prism L1, and the first lens L2 is not connected to the first lens tube 130, and the first lens L2 is not connected to the prism L1.

[0379] The first lens L2 is connected to the first lens barrel 130; the first lens L2 is not connected to the prism L1, the second lens barrel 140 is not connected to the first lens barrel 130, and the second lens barrel 140 is not connected to the prism L1.

[0380] The second lens tube 140 is connected to the prism L1; the second lens tube 140 is not connected to the first lens tube 130, the first lens L2 is not connected to the first lens tube 130, and the first lens L2 is not connected to the prism L1.

[0381] The first lens L2 is connected to the prism L1; the first lens L2 is not connected to the first lens barrel 130, the second lens barrel 140 is not connected to the first lens barrel 130, and the second lens barrel 140 is not connected to the prism L1.

[0382] The second lens tube 140 is connected to the first lens tube 130 and the second lens tube 140 is connected to the prism L1; the first lens L2 is not connected to the prism L1 and the first lens tube 130.

[0383] The first lens L2 is connected to the first lens barrel 130 and the first lens L2 is connected to the prism L1; the second lens barrel 140 is not connected to the first lens barrel 130 and the second lens barrel 140 is not connected to the prism L1.

[0384] The second lens barrel 140 is connected to the first lens barrel 130, and the first lens L2 is connected to the first lens barrel 130; the second lens barrel 140 is not connected to the prism L1, and the first lens L2 is not connected to the prism L1.

[0385] The second lens barrel 140 is connected to the first lens barrel 130, and the first lens L2 is connected to the prism L1; the second lens barrel 140 is not connected to the prism L1, and the first lens L2 is not connected to the first lens barrel 130.

[0386] The second lens tube 140 is connected to the first lens tube 130 and the prism L1 respectively, and the first lens L2 is connected to the first lens tube 130; the first lens L2 is not connected to the prism L1.

[0387] The second lens barrel 140 is connected to the first lens barrel 130 and the prism L1 respectively, and the first lens L2 is connected to the prism L1; the first lens L2 is not connected to the first lens barrel 130.

[0388] The second lens barrel 140 is connected to the first lens barrel 130, and the first lens L2 is connected to both the first lens barrel 130 and the prism L1; the second lens barrel 140 is not connected to the prism L1.

[0389] The second lens barrel 140 is connected to the prism L1, and the first lens L2 is connected to both the first lens barrel 130 and the prism L1; the second lens barrel 140 is not connected to the first lens barrel 130.

[0390] The second lens barrel 140 is connected to the first lens barrel 130 and the prism L1, and the first lens L2 is connected to the first lens barrel 130 and the prism L1.

[0391] The connection between the first lens barrel 130 and the second lens barrel 140 can be achieved through any combination of bolt connections, adhesive bonding, snap-fit ​​connections, and strap connections. The connection between the lens barrel (first lens barrel 130 or second lens barrel 140) and the first lens L2 can be adhesive bonding or snap-fit. The connection between the lens barrel (first lens barrel 130 or second lens barrel 140) and the prism L1 can also be adhesive bonding or snap-fit. The connection between the first lens L2 and the prism L1 can be adhesive bonding. The connection method between the first lens L2 and the prism L1 can be the same as that in the first embodiment. When there are multiple fixed lenses, each fixed lens can be connected to the second lens barrel 140, and the fixed lenses and the second lens barrel 140 can be connected by snap-fit ​​or adhesive bonding. Adjacent fixed lenses can be connected, and the connection method between adjacent fixed lenses can be the same as that between adjacent fixed lenses in the first embodiment.

[0392] In some embodiments, the fixed lens may adopt the same structure as the fixed lens in the first embodiment. One of the two adjacent fixed lenses is provided with a recess 123 and the other is provided with a protrusion 124. The cooperation between the protrusion 124 and the recess 123 serves as a limiting function. Adhesive may be applied to the second adhesive-containing area 112 formed between the protrusion 124 and the recess 123, or no adhesive may be applied.

[0393] The fixed optical component 100 provided in this embodiment is applied to a periscope camera module 10. Since a fixed lens, which is a plastic lens with optical power, is bonded to the image side of the prism L1 via a first adhesive, the fixed optical component 100 possesses optical power and thus has the refractive power to deflect light. This allows more light to enter the periscope camera module 10, effectively increasing the amount of light received and expanding the field of view. Because the fixed lens is a plastic lens, it is easy to design aspherical surfaces, facilitating manufacturing. Since at least one of the second lens barrel 140 and the fixed lens is connected to at least one of the first lens barrel 130 and the prism L1, the assembly of the prism L1 and the fixed lens is convenient, resulting in high assembly efficiency and stability.

[0394] Third Embodiment

[0395] As shown in Figures 39 to 44, the embodiments of this application are modified based on the second embodiment. In this embodiment, the first lens barrel 130 and the second lens barrel 140 are an integral structure.

[0396] This application provides another fixed optical component 100 for periscope camera module 10. In some implementations, the fixed optical component 100 includes a first lens barrel 130, a second lens barrel 140, a prism L1, and a fixed lens. The fixed lens is disposed on the image side of the prism L1. The prism L1 is installed inside the first lens barrel 130, and the fixed lens is installed inside the second lens barrel 140. The first lens barrel 130 and the second lens barrel 140 are integrally formed to constitute an integrally formed component.

[0397] Both the first lens barrel 130 and the second lens barrel 140 can be made of plastic, and the first lens barrel 130 and the second lens barrel 140 can be formed into an integral component by injection molding. Since the first lens barrel 130 and the second lens barrel 140 are integrally molded, there is no need to connect the first lens barrel 130 and the second lens barrel 140, which simplifies the assembly process of fixing the optical component 100.

[0398] The first lens barrel 130 and the second lens barrel 140 are integrally formed to form an integral component, which protects both the prism L1 and the fixed lens.

[0399] The number of fixed lenses can be one or more. When there is only one fixed lens, it is the first lens L2. When there are multiple fixed lenses, the fixed lens closest to the prism L1 is the first lens L2. In Figure 41, there are two fixed lenses. The fixed lens closest to the prism L1 is the first lens L2, and the fixed lens furthest from the prism L1 is the second lens L3.

[0400] As shown in Figure 41, in some implementations, one of the first lens barrel 130 and the second lens barrel 140 is provided with a limiting structure 150, which is located between the fixed lens (first lens L2) and the prism L1.

[0401] It is worth noting that the limiting structure 150 is located in the area opposite to the edge region 122 of the fixed lens. The limiting structure 150 can be connected to the integral structure formed by the first lens barrel 130 and the second lens barrel 140, or the limiting structure 150, the first lens barrel 130 and the second lens barrel 140 can be integrally formed to constitute an integrally formed component.

[0402] The limiting structure 150 serves to limit both the prism L1 and the fixed lens. The two sides of the limiting structure 150 are the prism L1 and the fixed lens, respectively. The limiting structure 150 contacts the image side of the prism L1, thereby limiting the movement of the prism L1 towards the fixed lens along the optical axis. The limiting structure 150 also contacts the image side of the fixed lens, thereby limiting the movement of the fixed lens towards the prism L1 along the optical axis.

[0403] For example, as shown in Figures 42 and 43, the limiting structure 150, the first lens barrel 130, and the second lens barrel 140 are integrally formed to constitute an integrally formed component.

[0404] As shown in Figures 41 and 44, in some implementations, a retaining ring 160 is installed inside the second lens barrel 140. The retaining ring 160 is located on the image side of the fixed lens and is used to confine the fixed lens within the second lens barrel 140. The retaining ring 160 is connected to the second lens barrel 140.

[0405] The pressure ring 160 and the second lens barrel 140 can be bonded together. For example, an adhesive groove can be provided in the edge region 122 of the pressure ring 160 away from the optical axis on the image side.

[0406] In one configuration, the limiting structure 150 and the pressure ring 160 limit the fixed lens in the optical axis direction from both sides of the fixed lens, thereby fixing the fixed lens into the second lens barrel 140.

[0407] In some implementations, as shown in Figures 41 and 43, a fifth adhesive-receiving area 115 is provided on the side of the first lens barrel 130 facing the prism L1, and the prism L1 is bonded to the first lens barrel 130. The fifth adhesive-receiving area 115 can be located in the inner wall of the receiving cavity 131, closer to the image side. The provision of the fifth adhesive-receiving area 115 provides a larger adhesive-receiving area between the prism L1 and the inner wall of the receiving cavity 131, thereby improving the fixation stability between the prism L1 and the first lens barrel 130. The fifth adhesive-receiving area 115 is a groove structure. It is worth noting that the connection method of providing the fifth adhesive-receiving area 115 on the side of the first lens barrel 130 facing the prism L1 and bonding the prism L1 to the first lens barrel 130 can also be applied to the first embodiment.

[0408] In a specific example, as shown in Figure 41, two lenses are fixed, namely a first lens L2 and a second lens L3. The first lens barrel 130 has a receiving cavity 131, and a first opening 132 and a second opening 133 communicating with the receiving cavity 131. A prism L1 is installed in the receiving cavity 131, with the object-side surface of the prism L1 facing the first opening 132 and the image-side surface of the prism L1 facing the second opening 133. The second opening 133 communicates with the inner cavity of the second lens barrel 140. During installation, the prism L1 enters the receiving cavity 131 through the first opening 132. The edge region 122 of the image-side surface of the prism L1 contacts the limiting structure 150, which limits the prism L1 within the receiving cavity 131. The prism L1 is connected to the first lens barrel 130 through the adhesive in the fifth adhesive region 115. In one method of fixing lenses, a first lens L2 enters the inner cavity of the second lens barrel 140 through the image-side opening. The first lens L2 contacts the limiting structure 150, which limits the first lens L2 within the inner cavity of the second lens barrel 140. A second lens L3 enters the inner cavity of the second lens barrel 140 through the image-side opening. The edge region 122 of the second lens L3 contacts the edge region 122 of the first lens L2, which limits the second lens L3 within the inner cavity of the second lens barrel 140. A retaining ring 160 enters the inner cavity of the second lens barrel 140 through the image-side opening. The retaining ring 160 contacts the edge region 122 of the image-side surface of the second lens L3, connecting the retaining ring 160 to the second lens barrel 140. Thus, the first lens L2 and the second lens L3 are fixed within the inner cavity of the second lens barrel 140 through the retaining ring 160 and the limiting structure 150. In another method of fixing the lens, the first lens L2 and the second lens L3 are first bonded together. Then, the first lens L2 and the second lens L3 are entered into the inner cavity of the second lens barrel 140 through the image-side opening. The first lens L2 contacts the limiting structure 150. The pressure ring 160 enters the inner cavity of the second lens barrel 140 through the image-side opening. The pressure ring 160 contacts the edge area 122 of the image-side surface of the second lens L3. The pressure ring 160 is connected to the second lens barrel 140, thereby fixing the first lens L2 and the second lens L3 into the inner cavity of the second lens barrel 140 through the pressure ring 160 and the limiting structure 150.

[0409] Fourth embodiment

[0410] As shown in Figures 45 to 49, the embodiments of this application are modified based on the second embodiment. In this embodiment, the second lens tube 140 is bonded to the prism L1.

[0411] This application provides another fixed optical component 100 for use in a periscope camera module 10. In some implementations, it includes a first lens barrel 130, a second lens barrel 140, a prism L1, and a fixed lens. The fixed lens is disposed on the image side of the prism L1. The prism L1 is installed inside the first lens barrel 130, and the fixed lens is installed inside the second lens barrel 140. The first lens barrel 130 has a receiving cavity 131, and a first opening 132 and a second opening 133 communicating with the receiving cavity 131. The prism L1 is installed inside the receiving cavity 131, with the object side of the prism L1 facing the first opening 132 and the image side of the prism L1 facing the second opening 133. The second lens barrel 140 extends into the second opening 133 and is bonded to the image side of the prism L1.

[0412] In this embodiment, the first lens barrel 130 and the second lens barrel 140 are separate structures, and the first lens barrel 130 and the second lens barrel 140 are manufactured independently. In this arrangement, making the first lens barrel 130 and the second lens barrel 140 separate structures makes the structures of the first lens barrel 130 and the second lens barrel 140 relatively simpler and easier to manufacture, reducing the manufacturing difficulty.

[0413] In this embodiment, the second lens barrel 140 extends into the second opening 133, and the inner wall of the second opening 133 contacts the outer wall of the second lens barrel 140. The second opening 133 serves to limit the second lens barrel 140 in the direction perpendicular to the optical axis and facilitates the positioning of the second lens barrel 140 during the assembly process.

[0414] The fixed lens can be installed in the second lens barrel 140 by snap-fit ​​or adhesive bonding. Alternatively, a limiting structure 150 and a pressure ring 160 can be connected to the second lens barrel 140. The limiting structure 150 is connected to the object side of the second lens barrel 140 to limit the fixed lens on the object side. After the fixed lens is installed in the second lens barrel 140, the pressure ring 160 is installed on the image side of the fixed lens and connected to the second lens barrel 140.

[0415] In this embodiment, the second lens barrel 140 is opposite to and bonded to the prism L1. On the one hand, the second lens barrel 140 provides protection and light shielding for the area outside the image side of the prism L1 and the fixed lens. On the other hand, the relative area between the second lens barrel 140 and the prism L1 is relatively large, and the area available for applying adhesive is relatively large, thereby making the connection strength between the second lens barrel 140 and the prism L1 relatively strong.

[0416] In one configuration, a first opening 132 allows the prism L1 to enter the receiving cavity 131 and allows light to be incident on the object-side surface of the prism L1. The area of ​​the first opening 132 may be larger than the area of ​​the object-side surface of the prism L1 to facilitate the insertion of the prism L1 into the receiving cavity 131 via the first opening 132. A second opening 133 allows the image-side surface of the prism L1 to connect with the object-side surface of the fixed lens and allows light to exit from the image-side surface of the prism L1. The area of ​​the second opening 133 is smaller than the area of ​​the image-side surface of the prism L1 to prevent the prism L1 from leaving the receiving cavity 131 via the second opening 133. Exemplarily, the first lens barrel 130 includes a partition located in at least a portion of the area outside the second opening 133 away from the optical axis, and the partition is used to limit and stop the prism L1.

[0417] In some implementations, the second lens barrel 140 has a third adhesive-containing area 113 and a first adhesive-blocking structure 141 on the side facing the prism L1. The third adhesive-containing area 113 is located on the side of the first adhesive-blocking structure 141 away from the optical axis. The first adhesive-blocking structure 141 is used to prevent the adhesive from flowing towards the fixed lens, thereby reducing the contact between the adhesive and the fixed lens.

[0418] As shown in Figure 46, the first adhesive-blocking structure 141 can be an annular structure protruding towards the prism L1 from the side of the second lens barrel 140 facing the prism L1. In this configuration, the area outside the first adhesive-blocking structure 141 (away from the optical axis direction) can be used to form the third adhesive-receiving area 113, thereby making the area in the second lens barrel 140 available for adhesive application relatively larger, which is beneficial to improving the connection strength between the second lens barrel 140 and the first lens barrel 130.

[0419] In some implementations, one of the first lens barrel 130 and the second lens barrel 140 may be provided with a limiting structure (not shown in Figures 45 to 49, but refer to Figure 41 of the third embodiment for the relative arrangement of the limiting structure with respect to the prism L1 and the first lens L2), and the limiting structure is located between the fixed lens (first lens L2) and the prism L1.

[0420] It is worth noting that the limiting structure is located in the area opposite to the edge region 122 of the fixed lens. The limiting structure can be connected to the first lens barrel 130, or the limiting structure and the first lens barrel 130 can be integrally formed to form an integral component; the limiting structure can also be connected to the second lens barrel 140, or the limiting structure and the second lens barrel 140 can be integrally formed to form an integral component. The limiting structure can also be located between the first lens barrel 130 and the second lens barrel 140, and the limiting structure can be connected to both the first lens barrel 130 and the second lens barrel 140.

[0421] In some implementations, a fifth adhesive-containing area (not shown in Figures 45 to 49) is provided on the side of the first lens barrel 130 facing the prism L1, and the prism L1 is bonded to the first lens barrel 130. The arrangement and position of the fifth adhesive-containing area can be the same as those of the fifth adhesive-containing area (see fifth adhesive-containing area 115 in Figure 41) in the third embodiment.

[0422] In some implementations, there are two fixed lenses, namely a first lens L2 and a second lens L3. The second lens L3 is located on the image side of the first lens L2. The first lens L2 has negative optical power, and the second lens L3 has positive optical power.

[0423] Fifth embodiment

[0424] As shown in Figures 50 to 54, the embodiments of this application are modified based on the second embodiment. In this embodiment, the first lens barrel 130 and the second lens barrel 140 are bonded together.

[0425] This application provides a fixed optical component 100 for use in a periscope camera module 10. In some implementations, the fixed optical component 100 includes a first lens barrel 130, a second lens barrel 140, a prism L1, and a fixed lens. The fixed lens is disposed on the image side of the prism L1. The prism L1 is installed inside the first lens barrel 130, and the fixed lens is installed inside the second lens barrel 140. A fourth adhesive region 114 is formed between the image side of the first lens barrel 130 and the object side of the second lens barrel 140.

[0426] The fourth adhesive-containing area 114 can be a planar structure or a grooved structure. For example, when the fourth adhesive-containing area 114 is a planar structure, the planar structure is a planar area for applying adhesive. When the fourth adhesive-containing area 114 is a grooved structure, compared to a planar structure, the grooved structure can accommodate more adhesive to provide a better bonding effect.

[0427] In this embodiment, the first lens barrel 130 and the second lens barrel 140 are separate structures, and the first lens barrel 130 and the second lens barrel 140 are manufactured independently. In this arrangement, making the first lens barrel 130 and the second lens barrel 140 separate structures makes the structures of the first lens barrel 130 and the second lens barrel 140 relatively simpler and easier to manufacture, reducing the manufacturing difficulty.

[0428] As shown in Figures 51 and 52, in some implementations, the first lens barrel 130 has a receiving cavity 131, and a first opening 132 and a second opening 133 communicating with the receiving cavity 131. The prism L1 is installed in the receiving cavity 131, with the object side of the prism L1 facing the first opening 132 and the image side of the prism L1 facing the second opening 133. The second lens barrel 140 has a body portion 142 and a positioning portion 143. The positioning portion 143 is located on the object side of the body portion 142 and is located in the second opening 133. The fourth adhesive receiving area 114 is located between the body portion 142 and the image side of the first lens barrel 130.

[0429] In this configuration, the positioning part 143 is located within the second opening 133. The inner wall of the second opening 133 serves to limit the positioning part 143 perpendicular to the optical axis and facilitates the positioning of the second lens barrel 140 during assembly. The main body 142 is bonded to the first lens barrel 130, resulting in a relatively large distance between the fourth adhesive-containing area 114 and the prism L1, as well as a relatively large distance between it and the fixed lens. The positioning part 143 acts as a barrier to the adhesive within the fourth adhesive-containing area 114.

[0430] In some implementations, a fifth adhesive-containing area (not shown in Figures 50 to 54) is provided on the side of the first lens barrel 130 facing the prism L1, and the prism L1 is bonded to the first lens barrel 130. The arrangement and position of the fifth adhesive-containing area can be the same as those of the fifth adhesive-containing area (see fifth adhesive-containing area 115 in Figure 41) in the third embodiment.

[0431] In some implementations, one of the first lens barrel 130 and the second lens barrel 140 is provided with a limiting structure (not shown in Figures 50 to 54, but refer to Figure 41 of the third embodiment for the relative arrangement of the limiting structure with respect to the prism L1 and the first lens L2), and the limiting structure is located between the fixed lens (first lens L2) and the prism L1.

[0432] It is worth noting that the limiting structure is located in the area opposite to the edge region 122 of the fixed lens. The limiting structure can be connected to the first lens barrel 130, or the limiting structure and the first lens barrel 130 can be integrally formed to form an integral component; the limiting structure can also be connected to the second lens barrel 140, or the limiting structure and the second lens barrel 140 can be integrally formed to form an integral component. The limiting structure can also be located between the first lens barrel 130 and the second lens barrel 140, and the limiting structure can be connected to both the first lens barrel 130 and the second lens barrel 140.

[0433] The fixed lens can be installed in the second lens barrel 140 by snap-fit ​​or adhesive bonding. Alternatively, a limiting structure and a pressure ring (not shown in Figures 50 to 54, but refer to Figure 41 of the third embodiment for the relative positions of the pressure ring 160 and the second lens L3) can be connected to the second lens barrel 140. The limiting structure is connected to the object side of the second lens barrel 140 to limit the fixed lens on the object side. After the fixed lens is installed in the second lens barrel 140, the pressure ring is installed on the image side of the fixed lens and connected to the second lens barrel 140.

[0434] In some implementations, there are two fixed lenses, namely a first lens L2 and a second lens L3. The second lens L3 is located on the image side of the first lens L2. The first lens L2 has negative optical power, and the second lens L3 has positive optical power.

[0435] Sixth Embodiment

[0436] As shown in Figures 29 and 55, this application embodiment provides a periscope camera module 10, including a fixed optical component 100, an adjustable optical component 200 and a photosensitive element 300 arranged sequentially from the object side to the image side. The adjustable optical component 200 is movable relative to the photosensitive element along the optical axis. The fixed optical component 100 is the fixed optical component 100 provided in any of the above embodiments.

[0437] Since the periscope camera module 10 includes the aforementioned fixed optical component 100, it possesses at least all the beneficial effects of the fixed optical component 100, which will not be elaborated further here.

[0438] The adjustable optical module includes one or more lenses, at least one of which is capable of moving laterally along the optical axis to approach or move away from the photosensitive element 300, thereby achieving zoom.

[0439] The photosensitive element 300 (also known as an image sensor) is a semiconductor chip containing hundreds of thousands to millions of photodiodes on its surface, which generate electrical charges when exposed to light. The photosensitive element 300 can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) device. A CCD is made of a highly sensitive semiconductor material that converts light into electrical charges. A CCD consists of many photosensitive units, typically measured in megapixels. When the surface of the photosensitive element 300 is illuminated, each photosensitive unit reflects an electrical charge onto the component; the signals generated by all the photosensitive units are added together to form a complete image.

[0440] The periscope camera module 10 may further include a filter 400, which may be located between the adjustable optical component 200 and the photosensitive element 300, allowing light to pass through the adjustable optical component 200 and illuminate the photosensitive surface of the photosensitive element 300. The filter 400 is used to filter out unwanted wavelengths in the light, preventing the photosensitive element 300 from producing false colors or ripples, thereby improving its effective resolution and color reproduction. Specifically, the filter 400 may be an infrared filter 400. In this embodiment, the filter 400 is an independent component, but the filter 400 structure may also be omitted. Filtering can be achieved by attaching a filter film layer or using a filter material to at least one surface of one of the lenses or prisms L1 of the fixed optical component 100. No specific limitations are imposed here.

[0441] The periscope camera module 10 may also include an aperture 500, which helps to improve the imaging quality of the periscope camera module 10. The aperture 500 may be located on the object side of the prism L1.

[0442] In one specific embodiment, as shown in FIG55, the periscope camera module 10 includes a fixed optical component 100, an adjustable optical component 200, and a photosensitive element 300 arranged sequentially from the object side to the image side. The fixed optical component 100 can be any of the fixed optical components 100 provided in the above embodiments. The fixed optical component 100 includes a prism L1, a first lens, and a second lens. The adjustable optical component 200 includes a third lens, a fourth lens, and a fifth lens. The periscope camera module 10 also includes an aperture 500 and a filter 400. The prism L1 has an object-side surface, a reflecting surface, and an image-side surface. The aperture 500 is disposed on the object-side surface of the prism L1. The filter 400 is disposed between the fifth lens and the photosensitive element 300.

[0443] The side of each lens facing the object side is called the object side, and the side facing the image side is called the image side. Both the object side and the image side, which bulge towards the image side at the optical axis, are called convex surfaces. Both the object side and the image side, which bulge towards the image side at the optical axis, are called concave surfaces.

[0444] The object-side surface E11 of prism L1 is convex, and the image-side surface E12 is flat. Prism L1 has positive optical power.

[0445] The object-side surface E21 of the first lens L2 is concave, and the image-side surface E22 is a concave surface that is close to a plane. The first lens L2 has negative optical power.

[0446] The object-side surface E31 of the second lens L3 is a convex surface that is close to a plane, and the image-side surface E32 is a convex surface. The second lens L3 has positive optical power.

[0447] The object-side surface E41 of the third lens L4 is a concave surface that is close to a plane, and the image-side surface E42 is a concave surface. The third lens L4 has negative optical power.

[0448] The object-side surface E51 of the fourth lens L5 is convex, and the image-side surface E52 is concave. The fourth lens L5 has negative optical power.

[0449] The object-side surface E61 of the fifth lens L6 is convex, and the image-side surface E62 is concave. The fifth lens L6 has negative optical power.

[0450] Specifically, there are minute gaps between the first lens L2 and the prism L1, and between the first lens L2 and the second lens L3. There is a relatively large gap between the second lens L3 and the third lens L4. The image-side surface of the third lens L4 is cemented to the object-side surface of the fourth lens L5, meaning there is no gap between the third lens L4 and the fourth lens L5. There is a relatively small gap between the fourth lens L5 and the fifth lens L6. There is a relatively large gap between the fifth lens L6 and the photosensitive element 300.

[0451] The following section presents the parameters of the periscope camera module 10 in this embodiment, including its radius of curvature, thickness, refractive index, and Abbe number, based on the main parameters of the periscope camera module 10 described above. The spacing includes the thickness of the lens itself and the distance between lenses, as well as the dispersion coefficient, i.e., the Abbe number.

[0452] It should be noted that the radius of curvature in Table 7a refers to the radius of curvature of the object side or image side of the lens corresponding to each surface number, along the optical axis. "Infinite" in the "radius of curvature" parameter series means that the object side or image side of the lens is a plane. The first value in the "thickness" parameter series for each lens is the thickness of the lens along the optical axis, and the second value is the distance along the optical axis from the image side of the lens to the object side of the next lens. A distance of 0 indicates that the two surfaces are glued or bonded together. The value of the aperture stop (STO) in the "thickness" parameter series is the distance along the optical axis from the center of the aperture stop (STO) to the object side of the next lens. Since the aperture stop (STO) is located on the object side of the prism L1 in this embodiment, the thickness of the aperture stop (STO) is 0.

[0453] In Table 7a, f is the effective focal length of the periscope camera module 10, which is equal to the EFL value of the periscope camera module 10; TTL is the total optical length, which refers to the distance from the first surface of the periscope camera module 10 to the image plane. In this embodiment, the effective focal length f of the periscope camera module 10 is 48.12 mm, the aperture FNO is 4.24, the field of view FOV is 8°, and the total optical length TTL of the periscope camera module 10 is 51.5818 mm.

[0454] Table 7a

[0455] Tables 7b and 7c both show the aspherical coefficients of the lenses in the first embodiment. The aspherical surfaces of the fixed optical assembly 100 in the following embodiments can be defined using, but are not limited to, the following aspherical curve equations:

[0456] Where Z represents the distance from a point on the aspherical surface to the vertex of the aspherical surface along the optical axis; r represents the distance from a point on the aspherical surface to the optical axis; c represents the central curvature of the aspherical surface; k represents the conic coefficient; a i Let represent the coefficients of the i-th order aspherical higher-order terms.

[0457] Table 7b

[0458] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0459] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

An optical lens, characterized in that, The optical lens comprises a first fixed lens group, a second fixed lens group, an image stabilization lens group, and a focusing lens group arranged along the optical axis of the lens, wherein: The first fixed lens group, the second fixed lens group, the image stabilization lens group, and the focusing lens group each contain at least one lens with optical power. The second fixed lens group, the image stabilization lens group, and the focusing lens group are all located on the image side of the first fixed lens group, and at least one of the image stabilization lens group and the focusing lens group is located between the first fixed lens group and the second fixed lens group. The optical lens according to claim 1 is characterized in that, The optical lens further includes at least one light-deflecting component, which is located on the image side of the first fixed lens group. The optical lens according to claim 1 or 2 is characterized in that, At least one of the image stabilization lens group, the focusing lens group, and the second fixed lens group contains a cemented doublet lens. The optical lens according to any one of claims 1 to 3 is characterized in that, The optical lens further includes an aperture stop, which is disposed on the object side of the first fixed lens group; or, the aperture stop extends around the object side of the first fixed lens group. The optical lens according to any one of claims 1 to 4 is characterized in that, The optical lens satisfies the following relationship: 0.4<CT MAX / TTL<0.7;2.5<CT MAX / EPD<4.5; Wherein, TTL is the total optical length of the optical lens along its own optical axis; EPD is the entrance pupil diameter of the optical lens; CT MAX It is the maximum value of the distance between any two adjacent elements in the four elements of the first fixed lens group, the second fixed lens group, the image stabilization lens group, and the focusing lens group, along the direction of extension of the optical axis of the optical lens. The optical lens according to any one of claims 1 to 5 is characterized in that, The optical lens satisfies the following relationship: 0.4 < EFL / TTL < 0.8; Wherein, EFL is the system focal length of the optical lens; TTL is the total optical length of the optical lens along its own optical axis. The optical lens according to any one of claims 1 to 6 is characterized in that, The optical lens satisfies the following relationship: 0.1 < F1 / EFL < 1; Wherein, F1 is the focal length of the first fixed lens group; EFL is the system focal length of the optical lens. The optical lens according to any one of claims 1 to 7 is characterized in that, The optical lens satisfies the following relationship: EFL AF / EFL<0.6; Among them, EFL AF The focal length of the focusing lens group is denoted as EFL; the system focal length of the optical lens is denoted as EFL. The optical lens according to any one of claims 1 to 8 is characterized in that, The optical lens satisfies the following relationship: -4<EFL OIS / EFL<4; Among them, EFL OIS is the focal length of the image stabilization lens group; EFL is the system focal length of the optical lens. The optical lens according to any one of claims 1 to 9 is characterized in that, The optical lens satisfies the following relationship: 0.01<CT AF / TTL<0.2; Among them, CT AF The center thickness of the focusing lens group is the thickness along the optical axis of the optical lens; TTL is the total optical length of the optical lens along its own optical axis. The optical lens according to any one of claims 1 to 10 is characterized in that, The optical lens satisfies the following relationship: 0.01<CT OIS / TTL<0.2; Among them, CT OIS The center thickness of the image stabilization lens group is the thickness along the optical axis of the optical lens; TTL is the total optical length of the optical lens along its own optical axis. The optical lens according to any one of claims 1 to 11 is characterized in that, The first fixed lens group is a fixed optical assembly, which includes a prism and a fixed lens. The fixed lens is disposed on the image side of the prism and is a plastic lens with optical power. At least one of the object side of the fixed lens and the image side of the prism is provided with a first adhesive-containing area. A first adhesive is disposed in the first adhesive-containing area, and the fixed lens and the prism are connected through the first adhesive. The optical lens according to claim 12 is characterized in that, The first adhesive region includes a first surface and a second surface. The first surface is perpendicular to the optical axis, and the second surface is located at the end of the first surface close to the optical axis, and the second surface is inclined relative to the first surface. The optical lens according to claim 12 is characterized in that, The number of fixed lenses is multiple, and the multiple fixed lenses are arranged sequentially and connected along the object to image side. A second adhesive region is provided between two adjacent fixed lenses, and a second adhesive is provided in the second adhesive region. The two adjacent fixed lenses are connected through the second adhesive. The optical lens according to claim 14 is characterized in that, The number of fixed lenses is two, namely a first lens and a second lens. The second lens is located on the image side of the first lens. The first lens has negative optical power, and the second lens has positive optical power. The optical lens according to claim 14 is characterized in that, One of the two adjacent fixed lenses is provided with a recess and the other is provided with a protrusion. At least a portion of the structure of the recess is located within the recess, and the recess and the protrusion define the second adhesive-containing area. The optical lens according to claim 16 is characterized in that, The recessed portion includes a third surface and a fourth surface that are relatively inclined and connected, and the protruding portion has a fifth surface and a sixth surface that are relatively inclined and connected. The third surface and the fifth surface are spaced apart from each other, and the fourth surface is in contact with the sixth surface. The third surface, the fourth surface and the fifth surface surround to form the second adhesive region. A camera module, characterized in that, include: substrate; An image sensor is disposed on the substrate, and the image sensor has an imaging surface; An optical lens is the optical lens according to any one of claims 1 to 17, wherein the lens module is electrically connected to the substrate, and the image side of the optical lens faces the imaging surface. The camera module according to claim 18 is characterized in that, The optical lens satisfies the following relationship: 0.4<CT MAX / TTL<0.7;2.5<CT MAX / EPD<4.5; Wherein, TTL is the total optical length of the optical lens along its own optical axis; EPD is the entrance pupil diameter of the optical lens; CT MAX It is the maximum value of the distance between any two adjacent elements in the optical lens along the optical axis extension direction of the five elements: the first fixed lens group, the second fixed lens group, the image stabilization lens group, the focusing lens group, and the image sensor. An electronic device, characterized in that, include: shell; The motherboard is housed within the casing; The camera module is the camera module as described in claim 18 or 19, wherein the camera module is disposed within the housing and is electrically connected to the motherboard.

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