Optical lens, camera lens and electronic device

Abstract

The application relates to the technical field of cameras, and provides an optical lens, a camera and electronic equipment, which can solve the problem of poor imaging quality of a camera in the related art when a photographer's hand shakes. The optical lens comprises a front lens group and a rear lens group arranged in the direction from an object side to an image side; the front lens group comprises a first light path turning element and at least one positive lens located on the object side of the first light path turning element, the at least one positive lens has a first optical axis, the rear lens group has a second optical axis, the first light path turning element has a first reflection surface; the second optical axis comprises an optical axis segment, an end point of the optical axis segment is located on the first reflection surface, and the optical axis segment extends to the image side of the first reflection surface; the front lens group is an anti-shake compensation lens group and can swing around a first rotation center axis; the first rotation center axis intersects the optical axis segment or is located close to the optical axis segment. The application can be used on electronic equipment such as mobile phones.

Description

[0001] This application is a divisional application of the patent application filed on August 28, 2023, with application number 202311092486.1 and entitled "Optical Lens, Camera and Electronic Device". Technical Field

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

[0003] Currently, cameras have become an important component of electronic devices such as mobile phones and tablets, allowing users to easily capture photos and meet their photography needs. With the development of electronic technology, the market demand for cameras with good image quality is increasing. Therefore, improving camera image quality has become an important issue in the industry.

[0004] In one type of camera lens, when taking a picture, the photographer's hand inevitably shakes, causing the light entering the camera to be projected onto the photosensitive element at a point that deviates from its normal position. This results in a drift in the image plane of the camera, making the image blurry and reducing the image quality of the camera. Summary of the Invention

[0005] Embodiments of this application provide an optical lens, a camera, and an electronic device to solve the problem of poor image quality in cameras when the photographer's hand shakes.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solutions: In a first aspect, embodiments of this application provide an optical lens, including a front lens group and a rear lens group arranged along the direction from the object side to the image side; the front lens group includes a first optical path deflection element and at least one positive lens located on the object side of the first optical path deflection element, the at least one positive lens having a first optical axis, the rear lens group having a second optical axis, the first optical path deflection element having a first reflective surface, the angle between the first reflective surface and the first optical axis and the angle between the first reflective surface and the second optical axis being both acute angles; the second optical axis includes an optical axis segment, the endpoint of the optical axis segment being located on the first reflective surface, and the optical axis segment extending towards the image side of the first reflective surface; the front lens group is an image stabilization compensation lens group and is oscillable about a first rotation center axis; the first rotation center axis is perpendicular to both the first optical axis and the second optical axis, and the first rotation center axis intersects with or is located near the optical axis segment.

[0007] In this embodiment of the optical lens, when the electronic device takes a picture through the camera and the electronic device experiences slight shaking in a direction parallel to the first and second optical axes, the front lens group oscillates around the first rotation center axis to compensate for image drift on the image plane caused by the shaking of the electronic device, thus ensuring image quality even in a shaking environment. Simultaneously, during the image stabilization compensation process, the rotation of the front lens group around the first rotation center axis reduces the loss of MTF (Mean Transmission Frequency) of the optical lens, thereby improving the image sharpness of the optical lens.

[0008] In some embodiments, the first rotation center axis is located on the image side of the first reflecting surface, and the first rotation center axis passes through an intersection point or is located near the intersection point; wherein, the intersection point is the intersection of a first straight line and the optical axis segment, the first straight line being parallel to the first optical axis and intersecting the bottom edge of the first reflecting surface. This configuration can reduce the MTF loss of the optical lens, thereby further improving the imaging sharpness of the optical lens.

[0009] In some embodiments, the front lens group can swing about a second rotation center axis; the second rotation center axis coincides with the second optical axis; or, the second rotation center axis is parallel to the second optical axis, and the second rotation center axis is located close to the second optical axis. This configuration can compensate for image drift caused by shaking of the electronic device in a direction perpendicular to the second optical axis, thereby ensuring image quality even in shaking environments.

[0010] In some embodiments, the front lens group can swing about a second rotation center axis; the second rotation center axis coincides with the first optical axis; or, the second rotation center axis is parallel to the first optical axis and is located close to the first optical axis. This configuration can compensate for image drift caused by shaking of the electronic device in a direction perpendicular to the first optical axis, thus ensuring image quality even in shaking environments.

[0011] In some embodiments, the first optical path deflection element is a reflector. This configuration reduces the load on the drive unit as the front lens assembly oscillates around its rotation center.

[0012] In some embodiments, the first optical path deflection element is a prism having a first light-incident surface and a first light-outcrystal surface. The first light-incident surface is disposed facing the side where the at least one positive lens is located, and the first light-outcrystal surface is disposed facing the side where the rear lens group is located. Among the at least one positive lens, the positive lens adjacent to the prism is disposed at a distance from the first light-incident surface. This arrangement is beneficial for correcting aberrations in optical lenses.

[0013] In some embodiments, in the at least one positive lens, there is an air gap between the positive lens adjacent to the prism and the first incident surface.

[0014] In some embodiments, the rear lens group includes a first lens group and a second lens group, the first lens group being located between the front lens group and the second lens group along the second optical axis, the second lens group being fixed in position relative to the front lens group, and the first lens group being a focusing lens group that can move relative to the front lens group along the second optical axis.

[0015] In some embodiments, the focusing sensitivity parameter of the optical lens is sens = [1 - (fg01 / fg0)]. 2 (f / fg01) 2 Where f is the effective focal length of the optical lens, fg0 is the effective focal length of the front lens group, and fg01 is the combined focal length of the front lens group and the first lens group; the focus sensitivity parameter sens satisfies: sens ≥ 1.7. This configuration not only shortens the focusing stroke of the optical lens and reduces the size of the focusing motor, but also facilitates the miniaturization of the camera.

[0016] In some embodiments, sens satisfies: sens ≥ 2.3. This setting is beneficial for further shortening the focusing distance of the optical lens.

[0017] In some embodiments, when the optical lens is focused on a distant object, sens satisfies: 2.3 ≤ sens ≤ 3. This setting not only helps to shorten the focusing time of the optical lens on a distant object, but also ensures the focusing accuracy of the optical lens when focusing on a distant object.

[0018] In some embodiments, the front lens group and the first lens group both have positive optical power, and the second lens group has negative optical power. This configuration ensures that the sensor gradually decreases as the optical lens switches from focusing on a near-field scene to focusing on a distant-field scene, and gradually increases as the optical lens switches from focusing on a distant-field scene to focusing on a near-field scene; and also reduces aberrations in the optical lens.

[0019] In some embodiments, the first lens group includes a first lens, a second lens, and a third lens along the object-to-image direction. The first and third lenses both have positive optical power, and the second lens has either positive or negative optical power. A gap exists between adjacent lenses of the first, second, and third lenses. The second lens group also includes a fourth and a fifth lens along the object-to-image direction. Both the fourth and fifth lenses have negative optical power, and a gap exists between them. This arrangement is beneficial for correcting aberrations in the optical lens.

[0020] In some embodiments, the second lens includes a positive lens and a negative lens spaced apart. This arrangement is beneficial for correcting aberrations in the optical lens.

[0021] In some embodiments, an air gap exists between a positive lens and a negative lens in the second lens.

[0022] In some embodiments, the fifth lens includes a positive lens and a negative lens spaced apart. This arrangement is beneficial for correcting aberrations in the optical lens.

[0023] In some embodiments, an air gap exists between a positive lens and a negative lens in the fifth lens.

[0024] In some embodiments, the optical lens further includes a second optical path deflection element disposed on the image side of the rear lens group. The second optical path deflection element has a second reflective surface, and the angle between the second reflective surface and the optical axis of the lens is an acute angle. This configuration can reduce the space occupied by the optical lens inside the electronic device; at the same time, it is beneficial to control the size of the photosensitive surface (i.e., the image plane) of the photosensitive element in the direction parallel to the second optical axis.

[0025] In some embodiments, the second optical path deflection element is a reflector.

[0026] In some embodiments, the second optical path deflection element is a prism with a second light-incident surface and a second light-outceasing surface. The second light-incident surface is disposed on the side where the rear lens group is located, and the second light-outceasing surface is located on one side of the second optical axis. This arrangement is beneficial for improving the imaging quality of the optical lens.

[0027] Secondly, embodiments of this application provide a camera, including a photosensitive element and the optical lens described in the first aspect, wherein the photosensitive element is disposed on the image side of the optical lens.

[0028] The beneficial effects of the camera module in this embodiment are the same as those of the optical lens in the first aspect, and will not be repeated here.

[0029] Thirdly, embodiments of this application provide an electronic device, including a housing and the camera described in the second aspect, wherein the camera is mounted on the housing.

[0030] The beneficial effects of the electronic device in this embodiment are the same as those of the camera module in the second aspect, and will not be repeated here.

[0031] In some embodiments, the electronic device is a mobile phone. Attached Figure Description

[0032] Figure 1a A schematic diagram illustrating the definitions of the image-side principal plane and image-side principal point of an optical system; Figure 1b A schematic diagram illustrating the definition of object-side principal planes and object-side principal points in an optical system; Figure 1c A schematic diagram illustrating the definitions of object distance and image distance in an optical system; Figure 1d A schematic diagram of the optical system of a camera in related technologies; Figure 2 This is a schematic diagram of the back of an electronic device (mobile phone) in some embodiments of this application; Figure 3 for Figure 2 A cross-sectional view of the electronic equipment in the picture; Figure 4 This is a schematic diagram of the optical system of the camera in the first embodiment of this application; Figure 5a for Figure 4 A schematic diagram of the first type of image stabilization compensation motion of the front lens group in the image; Figure 5b Schematic diagram 1 showing the range for setting the position of the first rotation center axis in the front lens group; Figure 5c for Figure 4 A schematic diagram of the second type of image stabilization compensation motion of the front lens group; Figure 5d A diagram illustrating the range for setting the position of the first rotation center axis in the front lens group. Figure 2 ; Figure 5e for Figure 4 A schematic diagram of the third type of image stabilization compensation motion of the front lens group; Figure 5f Schematic diagram 1 showing the range for setting the position of the second rotation center axis in the front lens group; Figure 5g for Figure 4 A schematic diagram of the fourth type of image stabilization compensation motion of the front lens group; Figure 5h A diagram illustrating the range for setting the position of the second rotation center axis in the front lens group. Figure 2 ; Figure 6 for Figure 4 A simplified diagram of the focusing principle of the camera's optical system is shown. Figure 7 This is a schematic diagram of the optical system of the camera in the second embodiment of this application; Figure 8 This is a schematic diagram of the optical system of the camera in the third embodiment of this application; Figure 9 This is a schematic diagram of the optical system of the camera in the fourth embodiment of this application; Figure 10a for Figure 9 A schematic diagram of the first type of image stabilization compensation motion of the front lens group in the image; Figure 10b for Figure 9 A schematic diagram of the second type of image stabilization compensation motion of the front lens group; Figure 10c for Figure 9 A schematic diagram of the third type of image stabilization compensation motion of the front lens group; Figure 10d for Figure 9 A schematic diagram of the fourth type of image stabilization compensation motion of the front lens group; Figure 11 This is a schematic diagram of the optical system of the camera in the fifth embodiment of this application; Figure 12 This is a schematic diagram of the optical system of the camera in the sixth embodiment of this application; Figure 13 This is an optical path diagram of the camera's optical system in the seventh embodiment of this application; Figure 14 This is a simulation diagram of the optical system of the camera in the seventh embodiment of this application when the object distance is infinity; Figure 15 This is a simulation diagram of the optical system of the camera in the seventh embodiment of this application at an object distance of 100mm; Figure 16 This is an optical path diagram of the camera's optical system in the eighth embodiment of this application; Figure 17 This is a simulation diagram of the optical system of the camera in the eighth embodiment of this application when the object distance is infinity; Figure 18 This is a simulation diagram of the optical system of the camera in the eighth embodiment of this application at an object distance of 100mm; Figure 19 This is an optical path diagram of the camera's optical system in the ninth embodiment of this application; Figure 20 This is a simulation diagram of the optical system of the camera in the ninth embodiment of this application when the object distance is infinity; Figure 21 This is a simulation diagram of the optical system of the camera in the ninth embodiment of this application at an object distance of 100mm; Figure 22 This is an optical path diagram of the camera's optical system in the tenth embodiment of this application; Figure 23 This is a simulation diagram of the optical system of the camera in the tenth embodiment of this application when the object distance is infinity; Figure 24 This is a simulation diagram of the optical system of the camera in the tenth embodiment of this application at an object distance of 100mm; Figure 25 This is an optical path diagram of the camera's optical system in the eleventh embodiment of this application; Figure 26 This is a simulation diagram of the optical system of the camera in the eleventh embodiment of this application when the object distance is infinity; Figure 27 This is a simulation diagram of the optical system of the camera in the eleventh embodiment of this application at an object distance of 50mm. Detailed Implementation

[0033] The technical terms used in the embodiments of this application are explained and described below.

[0034] Optical power, expressed as the reciprocal of the image-side focal length (approximately assuming the refractive index of air is 1), characterizes the ability of an optical lens to deflect light. Lenses or lens groups with positive optical power have a positive focal length and converge light rays. Lenses or lens groups with negative optical power have a negative focal length and diverge light rays.

[0035] A positive lens, also known as a converging lens or convex lens, is a lens that is thicker in the middle and thinner at the edges. Convex lenses have the function of converging light rays. Convex lenses are classified into biconvex, plano-convex, and concave-convex (or positive meniscus) types.

[0036] A negative lens, also known as a diverging lens or concave lens, is a lens that is thin in the middle and thick at the edges. Concave lenses diverge light. They come in various forms, including biconcave, plano-concave, and convex-concave.

[0037] The optical axis refers to the axis of symmetry of an optical system. For example, the optical axis of an optical lens is the axis that passes through the center of each optical element of the optical lens. The optical axis also refers to the center line of a light beam (light column). The optical properties of the light beam do not change when it rotates around this axis.

[0038] The object-side surface is defined by the lens; the side where the object is located is called the object-side surface, and the surface of the lens closest to the object-side is called the object-side surface.

[0039] The image side surface is the side where the image of the object is located, with the lens as the boundary. The surface of the lens closest to the image side is called the image side surface.

[0040] Focal length is a measure of the convergence or divergence of light in an optical system. It refers to the distance from the optical center of a lens to the focal point where parallel light converges. Focal length is divided into image-side focal length and object-side focal length. Image-side focal length is the distance from the image-side principal plane to the image-side focal point; similarly, object-side focal length is the distance from the object-side principal plane to the object-side focal point. In the embodiments of this application, the focal length, effective focal length (EFL), and combined focal length all refer to image-side focal length.

[0041] The principal plane of a lens (lens group), also known as the principal plane, includes the image-side principal plane and the object-side principal plane. When parallel light shines on the lens (lens group), after refraction, the light rays pass through the focal point on the image side. After refraction, the light rays are extended backward and intersect the incident light rays at a point. The plane perpendicular to the optical axis through this point is the image-side principal plane. The point where the image-side principal plane intersects the optical axis of the lens is the image-side principal point. Similarly, light rays emitted from the object-side focal point become parallel after refraction by the lens. The extended incident light rays intersect the parallel light rays at a point. The plane perpendicular to the optical axis through this point is the object-side principal plane. The point where the object-side principal plane intersects the optical axis of the lens is the object-side principal point.

[0042] like Figure 1a As shown, AB is an incident ray parallel to the optical axis. After passing through the optical system, the outgoing ray E'F' intersects the optical axis at F'. According to the imaging theory of ideal optical systems, F' is the image point of the object point on the infinity axis, called the image-side focal point. Extending the incident ray AB and the outgoing ray E'F' in opposite directions, the two rays must intersect at a point, let this point be Q'. Draw a plane perpendicular to the optical axis through Q', intersecting the optical axis at point H'. Then H' is called the image-side principal point, the Q'H' plane is called the image-side principal plane, and the distance from the principal point H' to the focal point F' is called the image-side focal length.

[0043] like Figure 1b As shown, F is called the object-side focal point. Let the extension of the incident ray emitted from the focal point F intersect the extension of the corresponding outgoing ray parallel to the optical axis at point Q. Draw a plane perpendicular to the optical axis through point Q and intersect the optical axis at point H. Point H is called the object-side principal point of the optical system, and the QH plane is called the object-side principal plane. The distance from the object-side principal point H to the object-side focal point F is called the object-side focal length of the optical system.

[0044] Object distance, such as Figure 1c As shown, the distance from the object plane to the object principal plane of the optical system is represented by the English letter U; the optical system can be a single lens or a lens group formed by multiple lenses.

[0045] Image distance, such as Figure 1c As shown, V represents the distance from the image plane to the principal plane of the image system; the optical system can be a single lens or a lens group consisting of multiple lenses.

[0046] Focusing, specifically, refers to adjusting the position of the lens group (i.e., the focusing lens group) in the optical lens to control the image distance, so that the image plane of the optical lens falls on the photosensitive element, thereby making the image of the optical lens as clear as possible.

[0047] Internal focusing (IF) refers to the process where an optical lens moves an internal focusing lens group to achieve focusing, while the total length (TTL) of the optical lens remains constant during focusing.

[0048] Focusing travel refers to the distance the focusing lens group moves during the focusing process of an optical lens. For example, when an optical lens switches from focusing on a distant scene to focusing on a close-up scene, the distance the focusing lens group moves along the optical axis is the focusing travel.

[0049] The image plane is located on the image side of all lenses in an optical lens, and is the surface on which light rays pass through each lens in the optical lens in sequence to form an image.

[0050] MTF (Modulation Transfer Function) is the ratio of contrast on the image plane to contrast on the object plane; that is, MTF represents the transfer of contrast. MTF = M / m; M = (Imax - Imin) / (Imax + Imin); where Imax is the maximum light intensity on the object plane and Imin is the minimum light intensity on the object plane; m = (imax - imin) / (imax + imin), where imax is the maximum light intensity on the image plane and imin is the minimum light intensity on the image plane. MTF is a quantitative description of the sharpness of an optical lens, specifically a quantitative description of the sharpness of the image formed by the optical lens (including both resolution and sharpness). MTF values ​​satisfy 0 ≤ MTF ≤ 1.

[0051] An aperture stop is a physical object in an optical system that limits the beam of light. An aperture stop can be the edge of a lens, a frame, or a specially designed perforated screen. The function of an aperture stop can be twofold: to limit the beam of light or to limit the size of the field of view (imaging range). The aperture stop that limits the beam of light the most in an optical system is called the aperture stop, and the aperture stop that limits the field of view (size) the most is called the field stop.

[0052] The pupil is the image of the aperture stop. The image formed by the optical system in front of the aperture stop is called the entrance pupil, or simply the entrance pupil; the diameter of the entrance pupil is the same as the diameter of the entrance pupil.

[0053] Relative aperture is the ratio of the entrance pupil diameter D to the image-side focal length. f The ratio of ˊ is denoted as RA, that is, RA = D / f ˊ.

[0054] The F-number (Fno or F / #) is the reciprocal of the relative aperture, i.e., F = f The smaller the F-number, the larger the aperture and the shallower the depth of field; conversely, the larger the F-number, the smaller the aperture and the greater the depth of field.

[0055] Total track length (TTL) refers to the total length from the surface of the optical lens closest to the object side to the image plane.

[0056] ImgH (Image Height) represents half the diagonal length of the effective photosensitive area on the image sensor, also known as the image height.

[0057] 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.

[0058] Aberration is the deviation between the image formed by an uncorrected optical system and the image formed by an ideal optical system. Aberrations include spherical aberration, coma, field curvature, astigmatism, distortion, and chromatic aberration.

[0059] Spherical aberration is a wide beam aberration. When a concentric beam of light emitted from an on-axis point passes through an optical system, it is no longer concentric. Light rays at different incident heights intersect the optical axis at different positions after passing through the system, resulting in varying degrees of deviation from the paraxial image point (ideal image point). This deviation is called axial spherical aberration, or simply spherical aberration. Due to spherical aberration, the image point on the Gaussian image plane is no longer a point, but a circular spot of confusion. The radius of this spot of confusion is called transverse spherical aberration.

[0060] Coma is an aberration of off-axis points with wide beams. In an optical system with coma, the image point formed by an off-axis object point on the ideal image plane is like a comet-shaped spot of light. The narrow beams close to the principal ray intersect the principal ray to form a bright spot, while the image points formed by beams of different apertures far from the principal ray are different rings far from the principal ray. Therefore, this imaging defect is called coma.

[0061] Chromatic aberration (CA) occurs when optical materials have different refractive indices for different wavelengths of light. Therefore, light rays of different colors passing through the same aperture intersect the optical axis at different points. Similarly, light rays of different colors passing through different apertures also intersect the optical axis at different points. This results in the image of an object point appearing as a colored diffuse spot at any position on the image plane. The difference in the imaging position and size between various colors of light is called chromatic aberration. There are two types of chromatic aberration: axial chromatic aberration and transverse chromatic aberration.

[0062] Axial chromatic aberration: The difference in the imaging position of two colors of light at a point on the axis is called positional chromatic aberration, also known as axial chromatic aberration.

[0063] Transverse chromatic aberration: The same medium has different refractive indices for different colors of light. Therefore, for off-axis object points, the transverse magnification of different colors of light is not equal. This difference is called transverse chromatic aberration, also known as magnification chromatic aberration.

[0064] Distortion, also known as distortion, is the difference between the height of the intersection point between the principal ray of different fields of view and the Gaussian image plane after passing through the optical lens and the ideal image height.

[0065] Field curvature is used to describe the difference along the optical axis between the position of the sharpest image point after rays from the off-center field of view pass through the optical lens group and the position of the sharpest image point in the central field of view. When field curvature exists, image points beyond the paraxial region on the Gaussian plane become blurred, and the image of a planar object becomes a curved surface of rotation, and a perfect image of the object plane cannot be obtained at the image plane.

[0066] Astigmatism is the axial distance between the meridional and sagittal image points of a narrow beam of light that do not coincide.

[0067] The meridional plane is the plane formed by the principal ray emitted from an object point outside the principal axis of an optical system and the principal axis of the optical system. Rays lying within the meridional plane are collectively called meridional beams. The point formed by a meridional beam is called a meridional image point. The image plane containing the meridional image point is called the meridional image plane.

[0068] The sagittal plane is a plane passing through the principal ray emitted from an object point located outside the principal axis of the optical system and perpendicular to the meridional plane. Rays lying within the sagittal plane are collectively called sagittal beams. The point formed by the sagittal beam is called the sagittal image point. The image plane containing the sagittal image point is called the sagittal image plane.

[0069] The technical solutions in some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0070] like Figure 1d As shown, Figure 1d A schematic diagram of the optical system of a camera in related technology is shown. The camera includes an optical lens 01 and a photosensitive element 02. The optical lens 01 is a telephoto lens and includes a front lens group G0, a first lens group G1, and a second lens group G2 along the object-to-image direction. The front lens group G0 includes a light path deflection element 011 and a positive lens 012 located on the object side of the light path deflection element 011. The light path deflection element 011 is a prism. The light beam emitted from the scene being photographed is imaged onto the photosensitive surface of the photosensitive element 02 after passing through the front lens group G0, the first lens group G1, and the second lens group G2.

[0071] However, when taking photos handheld, the photographer's hand will inevitably shake, causing the light entering the camera to be projected onto the photosensitive element 02 at a point that deviates from its normal position. This results in a drift in the image plane of the camera, making the image blurry and reducing the image quality of the camera.

[0072] To address this, this application provides an optical lens, a camera, and an electronic device. By configuring the front lens group of the optical lens to be able to swing around a rotational central axis (i.e., nodding motion), it is possible to compensate for the image drift caused by the shaking of the electronic device, thereby ensuring that the camera can maintain image stability in a shaking environment.

[0073] The electronic devices in this application embodiment can be mobile phones, tablets, laptops, wearable devices (such as smartwatches), or other electronic devices with cameras. The following uses a mobile phone as an example to specifically describe the electronic devices in this application embodiment. Other types of electronic devices can be set up with reference to the structure of the mobile phone embodiment, and will not be described in detail here.

[0074] like Figures 2-4 As shown, Figure 2 This is a schematic diagram of the back of an electronic device (mobile phone) in some embodiments of this application. Figure 3 for Figure 2 A cross-sectional view of the electronic device in the diagram. Figure 4 This is a schematic diagram of the optical system of the camera 100 in the first embodiment of this application. The electronic device includes a housing 200, a display screen 300, and a camera 100, which is mounted on the housing 200.

[0075] In some embodiments, such as Figure 3 As shown, the housing 200 includes a middle frame 210 (also called a front shell or front frame) and a rear cover 220 (also called a battery cover). The display screen 300 and the rear cover 220 are respectively mounted on opposite sides of the middle frame 210. The rear cover 220 and the middle frame 210 form a first receiving space 230. The camera 100 is a rear-facing camera and is disposed in the first receiving space 230. The light inlet of the camera 100 is positioned opposite to the camera window 221 provided on the rear cover 220 to ensure that the camera 100 can receive the light emitted by the subject outside the housing 200.

[0076] The camera window 221 can be directly mounted on the back cover 220; for example... Figure 3 As shown, the camera window 221 can also be disposed on the camera decorative piece 222. Specifically, the camera decorative piece 222 is disposed on the back cover 220. One side of the camera decorative piece 222 has an opening, and a protective cover plate 223 is provided at the opening. The light-transmitting area of ​​the protective cover plate 223 is the camera window 221. Figure 3As shown, the camera decorative piece 222 can be integrated with the back cover 220, but it is not limited to this; the camera decorative piece 222 can also be designed separately from the back cover 220.

[0077] The display screen 300 and the middle frame 210 form a second accommodating space 240. The second accommodating space 240 is used to house electronic components such as the motherboard 400. The motherboard 400 is connected to the display screen 300 and the camera 100 via flexible circuit boards. The motherboard 400 is equipped with a processor (not shown in the figure). The processor is used to acquire image data from the camera 100, process the image data, and then transmit the processed signal to the display screen 300.

[0078] The mid-frame 210 and the back cover 220 can be detachably connected or be an integral structure; no specific limitation is made here. The display screen 300 can be an LCD screen or an OLED (Organic Light-Emitting Diode) screen; no specific limitation is made here.

[0079] The camera 100 in this embodiment can be installed in the upper left corner, upper middle, or upper right corner of the back of the electronic device, without specific limitation. In addition to being installed on the back of the electronic device as a rear camera, the camera 100 can also be used as a front camera.

[0080] In some embodiments, such as Figure 3 and Figure 4 As shown, the camera 100 includes an optical lens 10, a photosensitive element 20, and a filter 30. The photosensitive element 20 is located on the image side of the optical lens 10. The filter 30 is located between the optical lens 10 and the photosensitive element 20, allowing light to pass through the optical lens 10 and illuminate the photosensitive surface of the photosensitive element 20.

[0081] The optical lens 10 mainly uses the refraction principle of the lens to form an image. That is, the light of the subject passes through the optical lens 10 and forms a clear image on the focal plane of the optical lens 10. The image of the subject is recorded by the photosensitive element 20 located at the focal plane. The photosensitive element 20 converts the optical image into an electrical signal and transmits it to the processor. The processor transmits the electrical signal to the display screen 300 to display the image of the subject on the display screen 300.

[0082] The photosensitive element 20 (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 20 can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) device; no specific limitation is made here.

[0083] The filter 30 is used to filter out unwanted wavelengths of light, preventing the photosensitive element 20 from producing false colors or ripples, thereby improving its effective resolution and color reproduction. In some embodiments, such as Figure 3 As shown, filter 30 is an infrared filter 30.

[0084] Among them, such as Figure 3 As shown, the filter 30 can be set independently, or the filter 30 can be attached to the surface of one of the lenses or prisms of the optical lens 10 to achieve filtering. No specific limitation is made here.

[0085] In some embodiments, such as Figure 3 As shown, the camera 100 includes a camera housing 40, an optical lens 10, a photosensitive element 20, and a filter 30 disposed inside the camera housing 40.

[0086] like Figure 4 As shown, the optical lens 10 includes a front lens group G0 and a rear lens group G10 arranged along the direction from the object side to the image side. The front lens group includes a first optical path reversing element 14 and a positive lens L01 located on the object side of the first optical path reversing element 14. The first optical path reversing element 14 has a first reflecting surface 141, which is used to reflect the light beam passing through the positive lens L01 to the rear lens group G10. The positive lens L01 has a first optical axis 11, and the rear lens group G10 has a second optical axis 12. The second optical axis 12 includes an optical axis segment 121, the endpoint O1 of which is located on the first reflecting surface 141, and the optical axis segment 121 extends toward the image side of the first reflecting surface 141 (e.g., ...). Figure 4 The optical axis segment 121 shown extends to the right side of the first reflecting surface 141.

[0087] like Figure 4 and Figure 5a As shown, Figure 5a for Figure 4The diagram illustrates the first type of image stabilization compensation motion of the front lens group G0. The front lens group G0 is an image stabilization compensation lens group and can swing (i.e., nodding) around the first rotation center axis m. The first rotation center axis m is perpendicular to both the first optical axis 11 and the second optical axis 12, and intersects with the optical axis segment 121. That is, the projection point of the first rotation center axis m onto the first plane 2 is located on the optical axis segment 121, and the first plane 2 is the plane determined by the first optical axis 11 and the second optical axis 12. Here, "perpendicular" refers to both absolute perpendicularity and approximate perpendicularity, such as a deviation within 1°.

[0088] Of course, besides intersecting with the optical axis segment 121, the first rotation center axis m can also be located close to the optical axis segment 121. Specifically, for example... Figure 5b As shown, the projection point of the first rotation center axis m on the first plane 2 is within the region 181 (including the boundary) defined by the straight line k1, the straight line k2 and the semicircular arc p1p2.

[0089] Wherein, lines k1 and k2 are both parallel to the second optical axis 12. Line k1 is positioned closer to the positive lens L01, and line k2 is positioned further away from the positive lens L01. Line k1 intersects the first reflecting surface 141 at point p1. The distances from lines k1 and k2 to the second optical axis 12 are both 3 mm. The radius of the semicircular arc p1p2 is 3 mm. One end of region 181 ( Figure 5b The left end of region 181 is bounded by the semicircular arc p1p2, and the other end of region 181 is ( Figure 5b The right end of the optical lens 10 can extend to the surface of the element furthest from the front lens group G0, for example... Figure 4 The second reflective surface 151 of the second optical path deflection element 15 (which will be described in detail later).

[0090] By setting the front lens group G0 as an image stabilization compensation lens group and allowing it to swing around the first rotation center axis m, when the electronic device takes a picture through the camera and the electronic device shakes slightly in a direction parallel to the first plane 2, the swing of the front lens group G0 around the first rotation center axis m can compensate for the image drift on the image plane caused by the shaking of the electronic device. This allows the camera to maintain image quality even in a shaking environment, thereby realizing the OIS (Optical Image Stabilization) function of the camera.

[0091] Meanwhile, compared to the scheme where the front lens group G0 only includes the first optical path deflection element 14 and the first optical path deflection element 14 swings, in the embodiment of this application, the front lens group G0 swings together the first optical path deflection element 14 and at least one positive lens on the object side around the first rotation center axis m. In this way, during the process of the front lens group G0 rotating around the first rotation center axis m for image stabilization compensation, the loss of MTF of the optical lens 10 can be reduced, thereby improving the imaging clarity of the optical lens 10.

[0092] In some embodiments, such as Figure 5a As shown, the first rotation center axis m passes through the end point O1 of the optical axis segment 121 located on the first reflecting surface 141.

[0093] In some embodiments, such as Figure 5c As shown, Figure 5c for Figure 4 The diagram illustrates the second type of image stabilization compensation motion of the front lens group G0. The first rotation center axis m is located on the image side of the first reflecting surface 141, and passes through the intersection point O2. Intersection point O2 is the intersection of the first straight line k3 and the optical axis segment 121. The first straight line k3 is parallel to the first optical axis 11 and intersects the bottom edge 1411 of the first reflecting surface 141. With this configuration, during the image stabilization compensation process of the front lens group G0 rotating around the first rotation center axis m, the loss of MTF in the optical lens 10 can be reduced, thereby further improving the image sharpness of the optical lens 10.

[0094] Wherein, the bottom edge 1411 of the first reflecting surface 141 is the edge line of the first reflecting surface 141 away from the positive lens L01, or the bottom edge 1411 of the first reflecting surface 141 is the edge line of the first reflecting surface 141 closer to the rear lens group G10. The first straight line k3 intersects the bottom edge 1411 of the first reflecting surface 141 at point O5, intersects the object-side surface of the positive lens L01 at point O4, and the first optical axis 11 intersects the object-side surface of the positive lens L01 at point O3. Points O1, O2, O3, O4, and O5 are all located within the first plane 2.

[0095] Of course, the first rotation center axis m can also be located near the intersection point O2, that is, the projection point of the first rotation center axis m on the first plane 2 is located near the intersection point O2. This setting can also reduce the MTF loss of the optical lens 10.

[0096] Specifically, the first rotation center axis m is located near the intersection point O2, meaning that: Figure 5dAs shown, the projection point of the first rotation center axis m on the first plane 2 is located within the region 182 (including the boundary) defined by the straight line dg, the straight line ef, the straight line fg and the semicircular arc de. The straight lines dg and ef are parallel to the second optical axis 12, the straight line fg is perpendicular to the optical axis segment 121, the distance from the straight lines dg and ef to the optical axis segment 121 is 3mm, and the radius of the semicircular arc de is 3mm.

[0097] The length of the aforementioned straight line dg can be within 20mm.

[0098] Furthermore, the length of the straight line dg can also be within 10mm.

[0099] In some embodiments, such as Figure 5e As shown, Figure 5e for Figure 4 The diagram illustrates the third type of image stabilization compensation motion of the front lens group G0. The front lens group G0 can swing around the second rotation center axis n (i.e., head-shaking motion), which coincides with the second optical axis 12. With this configuration, the swing of the front lens group G0 around the second rotation center axis n can compensate for the image drift caused by shaking of the electronic device in the direction perpendicular to the second optical axis 12, thus ensuring image quality even in shaky environments.

[0100] Of course, the second rotation center axis n can also be parallel to the second optical axis 12, with the second rotation center axis n located close to the second optical axis 12. Specifically, for example... Figure 5f As shown, the second rotation center axis n is located within the first space 183 (including the boundary). The first space 183 is a cylindrical space with the second optical axis 12 as the center axis and a radius r of 3 mm.

[0101] In some embodiments, such as Figure 5g As shown, Figure 5f for Figure 4 The diagram illustrates the fourth type of image stabilization compensation motion of the front lens group G0. The front lens group G0 can swing around the second rotation center axis n (i.e., head-shaking motion), which coincides with the first optical axis 11. With this configuration, the swing of the front lens group G0 around the second rotation center axis n can compensate for the image drift caused by shaking of the electronic device in the direction perpendicular to the first optical axis 11, thus ensuring image quality even in shaky environments.

[0102] Of course, the second rotation center axis n can also be parallel to the first optical axis 11, with the second rotation center axis n located close to the first optical axis 11. Specifically, for example... Figure 5h As shown, the second rotation center axis n is located within the second space 184 (including the boundary), and the second space 184 is a cylindrical space with the first optical axis 11 as the center axis and a radius r of 3 mm.

[0103] In this embodiment, the front lens group G0 can swing around the first rotation center axis m and the second rotation center axis n, respectively. This configuration allows the front lens group G0 to compensate for image drift caused by jitter in multiple directions of the electronic device, thus making the camera's imaging more stable. Furthermore, the front lens group G0 can also swing around either the first rotation center axis m or the second rotation center axis n.

[0104] In some embodiments, such as Figure 3 As shown, the positive lens L01 on the object side of the first optical path deflection element 14 is located in the third receiving space 224 enclosed by the camera decoration 222, and there is a gap between the positive lens L01 and the camera decoration 222 to prevent interference between the positive lens L01 and the camera decoration 222 when the front lens group G0 swings around the first rotation center axis m and the second rotation center axis n.

[0105] Of course, in addition to setting one positive lens, multiple positive lenses can be set on the object side of the first optical path deflection element 14, and all the positive lenses are located in the third accommodating space 224.

[0106] In some embodiments, such as Figure 4 As shown, the rear lens group G10 includes a first lens group G1 and a second lens group G2. The first lens group G1 is located between the front lens group G0 and the second lens group G2. The first lens group G1 is a focusing lens group and can move relative to the front lens group G0 along the second optical axis 12. Specifically, along the second optical axis 12, the positions of the second lens group G2 and the front lens group G0 are relatively fixed. During focusing, the distance between the second lens group G2 and the front lens group G0 on the second optical axis 12 remains constant.

[0107] The focusing sensitivity parameter sens of the optical lens 10 satisfies: sens≥1.7.

[0108] Focus sensitivity parameter sens = [1 - (fg01 / fg0)] 2 (f / fg01) 2 Equation (1); Where f is the effective focal length of the optical lens 10, fg0 is the effective focal length of the front lens group G0, and fg01 is the combined focal length of the front lens group G0 and the first lens group G1.

[0109] By setting the sensor value to ≥ 1.7, the focusing stroke of the optical lens 10 can be shortened, reducing the size of the focusing motor and thus facilitating the miniaturization of the camera.

[0110] To facilitate understanding of the relationship between the focus sensitivity parameter sens and the focus travel, the definition of sens and the derivation of equation (1) are explained below: like Figure 6 As shown, Figure 6 for Figure 4 The diagram shows the focusing principle of the camera's optical system. Figure 6 The light path in the example is illustrated by taking the paths of two light rays emitted from an object point on one axis of the scene.

[0111] Let the initial object distance of the scene captured by optical lens 10 be U, and the initial image distance be V. For example... Figure 6 As shown in (b), when the positions of the front lens group G0, the first lens group G1, and the second lens group G2 remain unchanged, the change in object distance is ΔU, which is the absolute value of the difference between the target object distance and the initial object distance. The corresponding change in image distance is ΔV. Figure 6 As shown in (c), during the focusing process, the positions of the front lens group G0 and the second lens group G2 of the optical lens 10 remain unchanged, the object distance changes by ΔU, and the moving distance (i.e., focusing stroke) of the first lens group G1 is ΔX, so that the position of the image plane I remains unchanged.

[0112] Sens is defined as: Sens = △V / △X (Equation 2); Based on Newton's formula, the relationship between the object distance, image distance, and effective focal length of the optical lens 10 satisfies: 1 / U + 1 / V = 1 / f (Equation 3); like Figure 6 As shown in (a) and (b), when the subject moves to the right by △U, the positions of the front lens group G0, the first lens group G1, and the second lens group G2 remain unchanged, and the image plane I (i.e. the focal plane) of the optical lens 10 moves to the right by △V. 1 / (U-△U) +1 / (V+△V)=1 / f; △V / △U=(V / U) 2 ≈(f / U) 2 Wherein, (V / U) 2 ≈(f / U) 2 The condition is that the absolute value of the object distance to the photographed scene is much greater than the absolute value of the focal length, that is, |U|>>|f|.

[0113] It can be concluded that the image plane I of optical lens 10 shifts to the right by ΔV = ΔU(f / U). 2 (Equation 4); like Figure 6 As shown in (b), when the subject moves ΔU to the right, the object distance from the subject to the principal plane of the front lens group G0 is U0. The positions of the front lens group G0, the first lens group G1, and the second lens group G2 remain unchanged. The distance that the image m2 formed by the system composed of the front lens group G0 and the first lens group G1 moves to the right is: △U(fg01 / U01) 2 =△U(fg0 / U0) 2 (fg1 / U1) 2 (Equation 5); Where U1 represents the distance from the image m1 of the photographed object after passing through the front lens group G0 to the principal surface of the first lens group G1; U01 represents the distance from the object surface of the photographed object to the principal surface of the combined system of the front lens group G0 and the first lens group G1. Figure 6 As shown in (c), when the subject moves to the right by △U, the positions of the front lens group G0, the second lens group G2 and the image plane I of the optical system remain unchanged, while the first lens group G1 moves to the left by △X. The image m1 formed by the front lens group G0 of the photographed scene is shifted to the right by an amount of ΔU(fg0 / U0). 2 ; The image m2 formed by m1 through the first lens group G1 remains stationary, that is: [△U(fg0 / U0) 2 +△X]·(fg1 / U1) 2 -△X=0 (Equation 6); Assuming the object distance (absolute value) of the photographed scene is much greater than the focal length (absolute value), we assume U0≈U01≈U; from equations 2 to 6, we can obtain: Sens=△V / △X=[1-(fg01 / fg0)] 2 (f / fg01) 2 ; As can be seen from the formula for sens, the size of sens is related to fg01, fg0, and f.

[0114] As shown in Equation 2, the focusing sensitivity parameter Sens represents the change in image distance caused by the movement of the focusing lens group per unit distance. The larger the Sens parameter, the greater the change in image distance caused by the movement of the focusing lens group per unit distance. During focusing, with a constant change in image distance, a larger Sens parameter results in a smaller focusing travel distance ΔX; conversely, a smaller Sens parameter results in a larger focusing travel distance ΔX. The physical meaning of the Sens parameter value is to characterize the scheme of using the first lens group G1 as the focusing lens group using a physical parameter (e.g.,...). Figure 4 The focusing distance of the scheme (i.e., the internal focusing scheme) is compared to the focusing distance of the scheme where the front lens group G0, the first lens group G1, and the second lens group G2 move as a group for focusing. The advantage of the scheme where the first lens group G1 is the focusing lens group is that it has a shorter focusing distance than the scheme where the front lens group G0, the first lens group G1, and the second lens group G2 move as a group for focusing. Typically, the sensor value of the scheme where the first lens group G1 is the focusing lens group is greater than or equal to 1.

[0115] In some embodiments, sens satisfies: sens ≥ 2.3. This setting is beneficial for further shortening the focusing distance of the optical lens.

[0116] In some embodiments, when the optical lens 10 is focused on a distant scene, sens satisfies: 2.3 ≤ sens ≤ 3. This setting not only helps to shorten the focusing distance of the optical lens 10 when focusing on a distant scene, but also ensures the focusing accuracy of the optical lens 10 when focusing on a distant scene, thereby improving the imaging quality and focusing efficiency of the camera when shooting distant scenes.

[0117] Among them, focusing accuracy and sensor are related. If the sensor is set too high, the change in image distance caused by the movement of the focusing lens group by a unit distance will be too large, which will reduce the focusing accuracy and make it difficult for the image plane I of the optical lens 10 to be adjusted to the position of the photosensitive surface of the photosensitive element 20.

[0118] In some embodiments, such as Figure 4 As shown, the front lens group G0 and the first lens group G1 both have positive optical power, while the second lens group G2 has negative optical power.

[0119] With this configuration, as the optical lens 10 switches from focusing on a close-up to focusing on a distant scene, the sensor decreases. In other words, the closer the focus point of the optical lens 10 is to the distant scene, the greater the change in image distance caused by the first lens group G1 moving a unit distance. This helps to improve the focusing accuracy of the optical lens 10 when focusing on a distant scene.

[0120] During the process of switching from focusing on a distant scene to focusing on a close scene, the sensor increases. That is, the closer the focus point of the optical lens 10 is to the close scene, the greater the change in image distance caused by the first lens group G1 moving a unit distance. This helps to shorten the focusing time of the optical lens 10 on the close scene, thereby improving the focusing efficiency of the camera when shooting close scenes.

[0121] Furthermore, by setting the optical power of the front lens group G0 to positive, the front lens group G0 focuses the light beam, reducing its diameter, which in turn helps to reduce the diameters of the first lens group G1 and the second lens group G2. By setting the optical power of the first lens group G1 and the second lens group G2 in a combination of positive and negative values, some aberrations can be canceled out, thereby reducing the aberrations of the optical lens 10 and ensuring the imaging quality of the optical lens 10.

[0122] In some embodiments, such as Figure 4 As shown, the first optical path deflection element 14 is a reflector. Compared to a prism, setting the first optical path deflection element 14 as a reflector makes the reflector lighter, and the load on the drive device can be reduced during the oscillation of the front lens group G0 around the rotation center point P.

[0123] The reflector includes a mirror body and a reflective film covering one side of the mirror body. The mirror body can be made of glass, but is not limited to this; other materials are also acceptable. The reflective film can be a metallic film, such as a silver film, aluminum film, or gold film; alternatively, a high-reflectivity dielectric film can be used to achieve ultra-high reflectivity.

[0124] In some embodiments, such as Figure 4 As shown, the angle between the first reflecting surface 141 and the second optical axis 12, and the angle between the first reflecting surface 141 and the first optical axis 11 are both 45°. However, this is not the only limitation; the angle between the first reflecting surface 141 and the second optical axis 12, and the angle between the first reflecting surface 141 and the first optical axis 11 can be set to other angles according to actual needs.

[0125] In some embodiments, such as Figure 4 As shown, the first lens group G1 includes a first lens L11, a second lens L14, and a third lens L15 along the object-to-image direction. All three lenses—L11, L14, and L15—have positive optical power, and there is a gap between adjacent lenses. This arrangement not only increases the number of lens surfaces in the first lens group G1, increasing the design freedom of the first lens group G1 and facilitating the correction of aberrations in the optical lens 10, but also avoids having an excessive number of lenses in the first lens group G1, thereby reducing the weight of the optical lens 10.

[0126] Of course, the second lens L14 described above can also have a negative optical power. With this configuration, the optical powers of the lenses in the first lens group G1 are arranged in a positive-negative-positive combination, which is more conducive to correcting the aberrations of the optical lens 10. In some embodiments, such as... Figure 4 As shown, the second lens group G2 includes a fourth lens L21 and a fifth lens L24 along the object-to-image direction. Both the fourth lens L21 and the fifth lens L24 have negative optical power, and there is a gap between them. This arrangement not only increases the number of lens surfaces in the second lens group G2, increasing the design freedom of the second lens group G2 and facilitating the correction of aberrations in the optical lens 10, but also avoids having too many lenses in the second lens group G2, thereby helping to balance the optical power of the optical lens 10 and reduce its weight.

[0127] The first lens group G1 is not limited to the above structure, and may contain more than 4 lenses; the second lens group G2 is not limited to the above structure, and may contain more than 3 lenses.

[0128] In some embodiments, such as Figure 4As shown, the optical lens 10 also includes a first fixing cylinder 41, a first lens group G1 is disposed in the first fixing cylinder 41, and a spacer ring 51 is provided between adjacent pairs of the first lens L11, the second lens L14 and the third lens L15. A limiting flange 411 is provided at one end of the first fixing cylinder 41, and a pressure ring 52 is provided at the other end. The limiting flange 411 and the pressure ring 52 restrict the first lens group G1 within the first fixing cylinder 41.

[0129] In some embodiments, such as Figure 4 As shown, at least one of the first lens L11, the second lens L14, and the third lens L15 has a light-shielding ring 53 at its edge to eliminate stray light at the edge of the first lens group G1. The light-shielding ring 53 may be located at the edge of the second lens L14.

[0130] In some embodiments, such as Figure 4 As shown, the optical lens 10 also includes a second fixing cylinder 42, the second lens group G2 is disposed in the second fixing cylinder 42, and a spacer ring 51 is provided between the fourth lens L21 and the fifth lens L24.

[0131] In some embodiments, such as Figure 4 As shown, at least one of the fourth lens L21 and the fifth lens L24 is provided with a light-shielding ring 53 at its edge to eliminate stray light at the edge of the second lens group G2. For example, the light-shielding ring 53 can be provided at the edges of the fourth lens L21 and the fifth lens L24 respectively.

[0132] In some embodiments, such as Figure 4 As shown, the optical lens 10 also includes a second optical path deflection element 15, which is disposed on the image side of the focusing lens group (specifically on the image side of the second lens group G2). The second optical path deflection element 15 has a second reflecting surface 151, which is used to reflect the light beam passing through the rear lens group G10 toward one side of the second optical axis 12. At this time, the optical lens 10 has three optical axes, namely the first optical axis 11, the second optical axis 12, and the second optical axis 13. The second optical axis 13 and the second optical axis 12 intersect on the second reflecting surface 151. The photosensitive element 20 and the second optical path deflection element 15 are arranged along the second optical axis 13.

[0133] By setting the second optical path deflection element 15, the optical path of the optical lens 10 can be folded to reduce the size of the optical lens 10 along the second optical axis 12, thereby reducing the space occupied by the optical lens 10 inside the electronic device. At the same time, it is beneficial to control the size of the photosensitive surface (i.e., image plane) of the photosensitive element 20 in the direction parallel to the second optical axis 12, so the photosensitive surface of the photosensitive element 20 can be designed to be larger, reducing the space occupied by the photosensitive element 20 in the thickness direction of the electronic device.

[0134] In some embodiments, such as Figure 4 As shown, the second optical path deflection element 15 is a prism and has a second light-incident surface 152 and a second light-exit surface 153. The second light-incident surface 152 is positioned towards the side where the rear lens group G10 is located, and the second light-exit surface 153 is located on one side of the second optical axis 12 (e.g., Figure 4 The second light-emitting surface 153 shown is located below the second optical axis 12. By setting the second optical path deflection element 15 as a prism, the second reflecting surface 151 is located inside the prism, which is less affected by external interference (such as dust) and has less light energy loss, thereby improving the imaging quality of the optical lens 10.

[0135] The prism can be made of light-transmitting materials such as glass and resin, without any specific limitations.

[0136] In some embodiments, such as Figure 4 As shown, the second light path deflection element 15 is a right-angled triangular prism, the second light-incident surface 152 and the second light-outcrystal surface 153 are the right-angled faces of the right-angled triangular prism, and the second reflecting surface 151 is the inclined surface of the right-angled triangular prism. In addition to a right-angled triangular prism, the second light path deflection element 15 can also be set as a prism of other shapes.

[0137] In some embodiments, such as Figure 4 As shown, the angle between the second reflecting surface 151 and the second optical axis 12 is 45°, at which point the second optical axis 12 is perpendicular to the second optical axis 13. However, this is not the only limitation; the angle between the second reflecting surface 151 and the second optical axis 12 can be set to other angles according to actual needs.

[0138] like Figure 7 As shown, Figure 7 This is a schematic diagram of the optical system of the camera in the second embodiment of this application. Figure 7 The optical lens 10 shown is Figure 4 The main difference of the optical lens 10 shown is: Figure 7 The first optical path deflection element 14 in the middle has two positive lenses on its object side, as described in detail below: Two positive lenses, namely positive lens L01 and positive lens L02, are provided on the object side of the first optical path reversing element 14. By providing two positive lenses on the object side of the first optical path reversing element 14, the design freedom of the front lens group G0 is increased, which is beneficial for correcting the aberrations of the optical lens 10.

[0139] Of course, the number of positive lenses set on the object side of the first optical path turning element 14 is not limited to two; it can also be more than two, such as three, four, or five lenses, depending on actual needs.

[0140] As for Figure 7 For details on the settings of the other components shown, please refer to [reference needed]. Figure 4 The settings will not be elaborated on here.

[0141] like Figure 8 As shown, Figure 8 This is a schematic diagram of the optical system of the camera in the third embodiment of this application. Figure 8 The optical lens 10 shown is Figure 4 The main difference of the optical lens 10 shown is: Figure 8 The optical lens 10 in the middle does not have a second optical path deflection element 15. Thus, the optical lens 10 has two optical axes, namely the second optical axis 12 and the first optical axis 11. The photosensitive element 20 and the optical lens 10 are arranged along the second optical axis 12.

[0142] As for Figure 8 For details on the settings of the other components shown, please refer to [reference needed]. Figure 4 The settings will not be elaborated on here.

[0143] like Figure 9 As shown, Figure 9 This is a schematic diagram of the optical system of the camera in the fourth embodiment of this application. Figure 9 The optical lens 10 shown is Figure 4 The main difference of the optical lens 10 shown is: Figure 4 The first optical path deflection element 14 in the middle is a reflector. Figure 9 The first optical path deflection element 14 is a prism, as described below: like Figure 9 As shown, the first optical path deflection element 14 is a prism and has a first light-incident surface 142 and a first light-exiting surface 143. The first light-incident surface 142 is disposed on the side where the positive lens L01 is located, and the first light-exiting surface 143 is disposed on the side where the rear lens group G10 is located.

[0144] The prism can be made of light-transmitting materials such as glass and resin, without any specific limitations.

[0145] In some embodiments, such as Figure 9 As shown, the first optical path deflection element 14 is a right-angled triangular prism, with the first light-incident surface 142 and the first light-outcrystal surface 143 being the right-angled faces of the prism, and the first reflecting surface 141 being the inclined surface of the prism. Besides a right-angled triangular prism, the first optical path deflection element 14 can also be configured as a prism of other shapes.

[0146] In some embodiments, such as Figure 9 As shown, the angle between the first reflecting surface 141 and the second optical axis 12 is 45°, at which point the second optical axis 12 is perpendicular to the first optical axis 11. However, this is not a limitation; the angle between the first reflecting surface 141 and the second optical axis 12 can be set to other angles according to actual needs.

[0147] In some embodiments, such as Figure 9 As shown, in at least one positive lens of the front lens group G0, the positive lens adjacent to the prism is separated from the first light-incident surface 142, that is, the positive lens L01 is separated from the first light-incident surface 142.

[0148] Compared to designing the image-side surface of the positive lens L01 as a plane and attaching it to the first light-incident surface 142, setting the positive lens L01 apart from the first light-incident surface 142 can increase the number of lens surfaces in the front lens group G0, increase the design freedom of the front lens group G0, and thus help to correct the aberrations of the optical lens 10.

[0149] In some embodiments, such as Figure 9 As shown, there is an air gap between the positive lens L01 and the first incident surface 142. Of course, the space between the positive lens L01 and the first incident surface 142 can be other media besides air, such as nitrogen, transparent adhesive layer, etc., which are not specifically limited here.

[0150] In some embodiments, such as Figure 10a As shown, Figure 10a for Figure 9 The diagram shows the first type of image stabilization compensation motion of the front lens group G0. The front lens group G0 can swing (i.e., nodding motion) around the first rotation center axis m to compensate for the image drift caused by the jitter of the electronic device.

[0151] In some embodiments, such as Figure 10a As shown, the first rotation center axis m passes through the end point O1 of the optical axis segment 121 located on the first reflecting surface 141.

[0152] In some embodiments, such as Figure 10b As shown, Figure 10b for Figure 9 The diagram shows the second type of image stabilization compensation motion of the front lens group G0. The first rotation center axis m passes through the intersection point O2, which is the intersection of the first straight line k3 and the edge line of the first reflecting surface 141 near the rear lens group G10, and is parallel to the first optical axis 11.

[0153] Of course, the first rotation center axis m can also be located near the intersection point O2. For details on the location near the intersection point O2, please refer to... Figure 5d The settings are described in the documentation and will not be repeated here.

[0154] Among them, such as Figure 10b As shown, the intersection point O2 is located on the first light-emitting surface 143. Of course, it is not limited to this; the intersection point O2 can also be located inside the prism.

[0155] In some embodiments, such as Figure 10c As shown, Figure 10c for Figure 9 The diagram shows the third type of image stabilization compensation motion of the front lens group G0. The front lens group G0 can swing around the second rotation center axis n (i.e., head-shaking motion), and the second rotation center axis n coincides with the second optical axis 12.

[0156] Of course, the second rotation center axis n can also be parallel to the second optical axis 12, with the second rotation center axis n located close to the second optical axis 12. For details on the location close to the second optical axis 12, please refer to... Figure 5f The settings are described in the documentation and will not be repeated here.

[0157] In some embodiments, such as Figure 10d As shown, Figure 10d for Figure 9 The diagram shows the fourth type of image stabilization compensation motion of the front lens group G0. The front lens group G0 can swing around the second rotation center axis n, which coincides with the first optical axis 11.

[0158] Of course, the second rotation center axis n can also be parallel to the first optical axis 11, with the second rotation center axis n located close to the first optical axis 11. The specific location close to the first optical axis 11 can be found in [reference needed]. Figure 5h The settings are described in the documentation and will not be repeated here.

[0159] As for Figure 9 For details on the settings of the other components shown, please refer to [reference needed]. Figure 4 The settings will not be elaborated on here.

[0160] like Figure 11 As shown, Figure 11 This is a schematic diagram of the optical system of the camera in the fifth embodiment of this application. Figure 11 The optical lens 10 shown is Figure 9 The main difference between the optical lens 10 shown is: Figure 11 The number of positive lenses disposed on the object side of the first optical path deflection element 14 of the optical lens 10 varies, as detailed below: The first optical path turning element 14 has two positive lenses on its object side, namely positive lens L01 and positive lens L02. Positive lens L02 is located between positive lens L01 and the first light-incident surface 142, and positive lens L02 is separated from the first light-incident surface 142.

[0161] Of course, the number of positive lenses set on the object side of the first optical path turning element 14 is not limited to two; there can be more than two, such as three, four, or five lenses, depending on the actual needs.

[0162] As for Figure 11 For details on the settings of the other components shown, please refer to [reference needed]. Figure 9 The settings will not be elaborated on here.

[0163] like Figure 12 As shown, Figure 12 This is a schematic diagram of the optical system of the camera in the sixth embodiment of this application. Figure 12 The optical lens 10 shown is Figure 9 The main difference between the optical lens 10 shown is: Figure 12 The optical lens 10 in the middle does not have a second optical path deflection element 15. Thus, the optical lens 10 has two optical axes, namely the first optical axis 11 and the second optical axis 12. The photosensitive element 20 and the optical lens 10 are arranged along the second optical axis 12.

[0164] As for Figure 12 For details on the settings of the other components shown, please refer to [reference needed]. Figure 9 The settings will not be elaborated on here.

[0165] like Figure 13 As shown, Figure 13 This is an optical path diagram of the camera's optical system in the seventh embodiment of this application. Figure 13 The optical lens 10 shown is Figure 4 The main difference between the optical lenses 10 shown is that the configuration of the first lens group G1 is different, as described below: The second lens L14 includes a positive lens L12 and a negative lens L13 arranged at intervals. This arrangement is equivalent to splitting the second lens L14 into a positive lens L12 and a negative lens L13, which helps to increase the number of lens surfaces in the first lens group G1, increases the degree of freedom in the design of the first lens group G1, and thus helps to correct the aberrations of the optical lens 10.

[0166] Specifically, when the optical power of the second lens L14 is positive, the combined optical power of the positive lens L12 and the negative lens L13 is positive; when the optical power of the second lens L14 is negative, the combined optical power of the positive lens L12 and the negative lens L13 is negative.

[0167] Among them, such as Figure 13 As shown, the negative lens L12 can be positioned between the first lens L11 and the positive lens L13, but it is not limited to this. The negative lens L12 can also be positioned between the positive lens L13 and the third lens L15.

[0168] In some embodiments, such as Figure 13 As shown, there is an air gap between the positive lens L12 and the negative lens L13. Of course, the medium between the positive lens L12 and the negative lens L13 is not limited to air; it can also be other media, such as nitrogen or a gel layer.

[0169] The following section will analyze the specific parameters and simulation results. Figure 13 The optical system of the camera shown is described in detail.

[0170] As shown in Tables 7.1 and 7.2, Table 7.1 shows some key parameters of the optical system of the camera in the seventh embodiment of this application, and Table 7.2 shows the aspherical coefficients of each surface of the optical system of the camera in the seventh embodiment of this application.

[0171] Table 7.1

[0172] In the table, the units for the parameters of radius of curvature, thickness, and light transmission radius are all mm. OBJ represents the object surface, with the object distance set to 1e+18 mm at infinity and 100 mm at macro. STO represents the stop, which is located between the first optical path deflection element 14 and the first lens group G0 to limit the size of the light transmission aperture and control the amount of light entering the optical system.

[0173] S1 represents the object-side surface of the positive lens L01, and S2 represents the image-side surface of the positive lens L01. MIRROR represents the first optical path reversing element 14, which is a reflector with light-reversing function. S5 represents the object-side surface of the first lens L11, and S6 represents the image-side surface of the first lens L11. S7 represents the object-side surface of the negative lens L12, and S8 represents the image-side surface of the negative lens L12. S9 represents the object-side surface of the positive lens L13, and S10 represents the image-side surface of the positive lens L13. S11 represents the object-side surface of the third lens L15, and S12 represents the image-side surface of the third lens L15. S13 represents the object-side surface of the fourth lens L21, and S14 represents the image-side surface of the fourth lens L21. S15 represents the object-side surface of the fifth lens L24, and S16 represents the image-side surface of the fifth lens L24. PRISM represents the second optical path deflection element 15, which is a prism with three surfaces S17, S18, and S19. S17 is the second incident surface 152 near the object side, S18 is the second reflecting surface 151, and S19 is the second emitting surface 153 near the image side. IRCF represents the filter 30, which is an infrared filter. S20 is the object-side surface of the filter 30, and S21 is the image-side surface S22 of the filter 30. IMA represents the image plane IMAGE, which can be the photosensitive surface of the photosensitive element 20.

[0174] In the table, the surface number S is in the "Thickness" parameter column. n The corresponding numerical value means surface number S n Surface to surface number S n+1 The distance of the surface along the optical axis; the rule for the sign of the thickness parameter is as follows: Starting with S... n The vertex of the surface (the intersection with the optical axis) is the origin for calculation, Sn+1 The vertex of a surface is positive if it's on the left, negative if it's on the right, positive if it's at the bottom, and negative if it's at the top. The radii of curvature in the table are the radii of curvature of the corresponding surface number along the optical axis; the sign rules for the radius of curvature parameter are as follows: starting with S... n The vertex of the surface is the origin of the calculation. A value of left-hand center is positive, right-hand center is negative, bottom center is positive, and top center is negative. A radius of curvature of INF indicates that the surface corresponding to this parameter is a plane with an infinite radius of curvature.

[0175] The thickness parameter "-2.800" of the aperture represents the distance on the optical axis between the object-side surface S5 of the first lens L11 and the aperture STOP when the object distance is 1e+18 mm; the thickness parameter "-1.613" of the aperture represents the distance on the optical axis between the object-side surface S5 of the first lens L11 and the aperture STOP when the object distance is 100 mm; the thickness parameter "-0.450" of the third lens L15 represents the distance on the optical axis between the image-side surface S12 of the third lens L15 and the object-side surface S13 of the fourth lens L21 when the object distance is 1e+18 mm; the thickness parameter "-1.637" of the third lens L15 represents the distance on the optical axis between the image-side surface S12 of the third lens L15 and the object-side surface S13 of the fourth lens L21 when the object distance is 100 mm.

[0176] The interpretation of the rules for the positive and negative signs in front of the radius of curvature and thickness parameters in Table 7.1 above applies not only to Table 7.1, but also to the other tables below.

[0177] As can be seen from Table 7.1, in the seventh embodiment of this application, when the object distance of the camera lens 10 is switched from infinity (distant view) to macro 100mm (close view), the focusing stroke of the focusing lens group (i.e. the first lens group G1) is 1.187mm.

[0178] In some embodiments, the aspherical surface in the optical lens 1 can be defined using the following aspherical curve equation: ; Where z is the relative distance between a point on the aspherical surface at a distance r from the optical axis and the tangent plane at the intersection point on the optical axis; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; K is the cone coefficient; A i For the i-th order aspherical coefficients, see Table 7.2 for details.

[0179] Table 7.2

[0180] As shown in Tables 7.3 and 7.4, Table 7.3 shows some other key parameters of the optical system of the camera in the seventh embodiment of this application, and Table 7.4 shows the focal length and sens value of the optical system of the camera in the seventh embodiment of this application when the object distance is infinity.

[0181] Table 7.3

[0182] Table 7.4 Object Distance: INIFINIITY

[0183] Wherein, f1 is the focal length of the positive lens L01, f2 is the focal length of the first lens L11, f3 is the focal length of the negative lens L12, f4 is the focal length of the positive lens L13, f5 is the focal length of the third lens L15, f6 is the focal length of the fourth lens L21, f7 is the focal length of the fifth lens L24, f34 is the combined focal length of the negative lens L12 and the positive lens L13, f is the effective focal length of the optical lens 10, fg0 is the effective focal length of the front lens group G0, fg1 is the effective focal length of the first lens group G1, fg2 is the effective focal length of the second lens group G2, and fg01 is the combined focal length of the front lens group G0 and the first lens group G1.

[0184] like Figure 14 and Figure 15 As shown, Figure 14 This is a simulation diagram of the optical system of the camera in the seventh embodiment of this application at an object distance of infinity. Figure 15 This is a simulation diagram of the optical system of the camera in the seventh embodiment of this application at an object distance of 100mm. Figure 14 and Figure 15 The diagram shows the axial spherical aberration curve, astigmatism and field curvature curves at various image heights, and optical distortion curves of the optical lens 10. The axial spherical aberration curves include those corresponding to different wavelengths of the system (656.2725 nm, 587.5618 nm, and 486.1327 nm are shown in the diagram). Physically, these curves represent the deviation of light of a corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. Figure 14 and Figure 15 The values ​​are all relatively small, indicating that the axial spherical aberration correction of optical lens 10 is relatively good. The astigmatism curve is used to illustrate the deviation of the convergence point of the fine beam from the ideal imaging plane in different fields of view. x represents the sagittal beam, and y represents the meridional beam; the horizontal axis represents the deviation along the optical axis, and the vertical axis represents the corresponding field of view. When a value in a certain field of view is too large, the image quality of that field of view is poor or there are higher-order aberrations. Figure 14 and Figure 15 The field curvature in both directions shown is small, indicating that the system has good depth of focus. The distortion diagram is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. Figure 14 and Figure 15 The deviation shown is small, ensuring that the image is not significantly distorted. Therefore, the optical system of the camera in the seventh embodiment of this application achieves low light aberration control and obtains clear image quality through reasonable surface shape and air gap design.

[0185] like Figure 16 As shown, Figure 16 This is an optical path diagram of the camera's optical system in the eighth embodiment of this application. Figure 16 The optical lens 10 shown is Figure 13 The main difference between the optical lens 10 shown is: Figure 16 The first optical path deflection element 14 in the middle has two positive lenses on its object side, namely positive lens L01 and positive lens L02.

[0186] The following section will analyze the specific parameters and simulation results. Figure 16 The optical system of the camera shown is described in detail.

[0187] As shown in Tables 8.1 and 8.2, Table 8.1 shows some key parameters of the optical system of the camera in the eighth embodiment of this application, and Table 8.2 shows the aspherical coefficients of each surface of the optical system of the camera in the eighth embodiment of this application.

[0188] Table 8.1

[0189] The meanings of the symbols in Table 8.1 above are explained as follows: In the table, the units for the parameters of radius of curvature, thickness, and light transmission radius are all mm. OBJ represents the object surface; the object distance is set to 1e+18 mm at infinity and 100 mm at macro. STO represents the stop, which limits the size of the light transmission aperture and controls the amount of light entering the optical system.

[0190] S1 represents the object-side surface of positive lens L01, and S2 represents the image-side surface of positive lens L01. S3 represents the object-side surface of positive lens L02, and S4 represents the image-side surface of positive lens L02. MIRROR represents the first optical path reversing element 14, which is a reflector with light reversal function. S7 represents the object-side surface of first lens L11, and S8 represents the image-side surface of first lens L11. S9 represents the object-side surface of negative lens L12, and S10 represents the image-side surface of negative lens L12. S11 represents the object-side surface of positive lens L13, and S12 represents the image-side surface of positive lens L13. S13 represents the object-side surface of third lens L15, and S14 represents the image-side surface of third lens L15. S15 represents the object-side surface of fourth lens L21, and S16 represents the image-side surface of fourth lens L21. S17 represents the object-side surface of the fifth lens L24, and S18 represents the image-side surface of the fifth lens L24. PRISM represents the second optical path deflection element 15, which is a prism with three surfaces S19, S20, and S21. S19 is the second incident surface 152 near the object side, S20 is the second reflecting surface 151, and S21 is the second emitting surface 153 near the image side. IRCF represents the filter 30, which is an infrared filter. S22 is the object-side surface of the filter 30, and S23 is the image-side surface S22 of the filter 30. IMA represents the image plane IMAGE.

[0191] The radius of curvature of 1.00E+18 indicates that the surface corresponding to this parameter is a plane with an infinite radius of curvature; the aperture thickness parameter "-2.769" represents the distance on the optical axis between the object-side surface S7 of the first lens L11 and the aperture when the object distance is 1e+18 mm; the aperture thickness parameter "-1.575" represents the distance on the optical axis between the object-side surface S7 of the first lens L11 and the aperture when the object distance is 100 mm; the thickness parameter "-0.450" of the third lens L15 represents the distance on the optical axis between the image-side surface S14 of the third lens L15 and the object-side surface S15 of the fourth lens L21 when the object distance is 1e+18 mm; the thickness parameter "-1.644" of the third lens L15 represents the distance on the optical axis between the image-side surface S14 of the third lens L15 and the object-side surface S15 of the fourth lens L21 when the object distance is 100 mm.

[0192] As can be seen from Table 8.1, in the camera of the eighth embodiment of this application, when the object distance of the photographed scene is switched from infinity (distant view) to macro 100mm (close view), the focusing stroke of the focusing lens group (i.e. the first lens group G1) is 1.194mm.

[0193] Table 8.2

[0194] As shown in Tables 8.3 and 8.4, Table 8.3 shows some other key parameters of the optical system of the camera in the eighth embodiment of this application, and Table 8.4 shows the focal length and sens value of the optical system of the camera in the eighth embodiment of this application when the object distance is infinity.

[0195] Table 8.3

[0196] Table 8.4 Object Distance: INIFIINITY

[0197] Wherein, f1 is the focal length of positive lens L01, f2 is the focal length of positive lens L02, f3 is the focal length of first lens L11, f4 is the focal length of negative lens L12, f5 is the focal length of positive lens L13, f6 is the focal length of third lens L15, f7 is the focal length of fourth lens L21, f8 is the focal length of fifth lens L24, f12 is the combined focal length of positive lenses L01 and L02, f45 is the combined focal length of negative lens L12 and positive lens L13, f is the effective focal length of optical lens 10, fg0 is the effective focal length of front lens group G0, fg1 is the effective focal length of first lens group G1, fg2 is the effective focal length of second lens group G2, and fg01 is the combined focal length of front lens group G0 and first lens group G1.

[0198] like Figure 17 and Figure 18 As shown, Figure 17 This is a simulation diagram of the optical system of the camera in the eighth embodiment of this application at an infinity object distance. Figure 18 This is a simulation diagram of the optical system of the camera in the eighth embodiment of this application at an object distance of 100mm. Figure 17 and Figure 18 The axial spherical aberration curve, astigmatism and field curvature curves at various image heights, and optical distortion curves of the optical lens 10 are shown. The axial spherical aberration curves include those corresponding to different wavelengths of the system (656.2725 nm, 587.5618 nm, and 486.1327 nm are shown in the illustration). Physically, these curves represent the deviation of light of a corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. Figure 17 and Figure 18 The values ​​are all relatively small, indicating that the axial spherical aberration correction of optical lens 10 is relatively good. The astigmatism curve is used to illustrate the deviation of the convergence point of the fine beam from the ideal imaging plane in different fields of view. x represents the sagittal beam, and y represents the meridional beam; the horizontal axis represents the deviation along the optical axis, and the vertical axis represents the corresponding field of view. When a value in a certain field of view is too large, the image quality of that field of view is poor or there are higher-order aberrations. Figure 17 and Figure 18 The field curvature in both directions shown is small, indicating that the system has good depth of focus. The distortion diagram is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. Figure 17 and Figure 18 The deviation shown is small, ensuring that the image is not significantly distorted. Therefore, the optical system of the camera in the eighth embodiment of this application achieves low light aberration control and obtains clear image quality through reasonable surface shape and air gap design.

[0199] like Figure 19 As shown, Figure 19 This is an optical path diagram of the optical system of the camera in the ninth embodiment of this application. Figure 19 The optical lens 10 shown is Figure 13 The main difference between the optical lens 10 shown is: Figure 19 The first optical path deflection element 14 is a prism.

[0200] The following section will analyze the specific parameters and simulation results. Figure 19 The optical system of the camera shown is described in detail.

[0201] As shown in Tables 9.1 and 9.2, Table 9.1 shows some key parameters of the optical system of the camera in the ninth embodiment of this application, and Table 9.2 shows the aspherical coefficients of each surface of the optical system of the camera in the ninth embodiment of this application.

[0202] Table 9.1

[0203] The meanings of the symbols in Table 9.1 above are explained as follows: In the table, the units for the parameters of radius of curvature, thickness, and light transmission radius are all mm. OBJ represents the object surface. In the object distance state at infinity, the object distance is set to 1e+18 mm, and in the macro state, the object distance is set to 100 mm.

[0204] S1 represents the object-side surface of the positive lens L01, and S2 represents the image-side surface of the positive lens L01. PRISM1 represents the first optical path deflection element 14, which is a prism with light-reflecting function. It has three surfaces S3, S4, and S5, where S3 is the first light-incident surface 142 near the object side, S4 is the first reflecting surface 141, and S5 is the first light-exit surface 143 near the image side. S6 represents the object-side surface of the first lens L11, and S7 represents the image-side surface of the first lens L11. STO represents the stop, which limits the size of the light-passing aperture and affects the amount of light entering the optical system. STO is located on the object-side surface S6 of the L11 lens. S8 represents the object-side surface of the negative lens L12, and S9 represents the image-side surface of the negative lens L12. S10 represents the object-side surface of the positive lens L13, and S11 represents the image-side surface of the positive lens L13. S12 represents the object-side surface of the third lens L15, and S13 represents the image-side surface of the third lens L15. S14 represents the object-side surface of the fourth lens L21, and S15 represents the image-side surface of the fourth lens L21. S16 represents the object-side surface of the fifth lens L24, and S17 represents the image-side surface of the fifth lens L24. PRISM2 represents the second optical path deflection element 15, which is a prism with three surfaces S18, S19, and S20. S18 is the second light-incident surface 152 near the object side, S19 is the second reflecting surface 151, and S20 is the second light-outcrowding surface 153 near the image side. IRCF represents the filter 30, which is an infrared filter. S21 is the object-side surface of the filter 30, and S22 is the image-side surface S22 of the filter 30. IMA represents the image plane IMAGE.

[0205] The thickness parameter "-3.817" of surface S5 represents the distance on the optical axis between the object-side surface S6 of the first lens L11 and the S5 surface of the prism when the object distance is 1e+18 mm; the thickness parameter "-2.401" of surface S5 represents the distance on the optical axis between the object-side surface S6 of the first lens L11 and the S5 surface of the prism when the object distance is 100 mm; the thickness parameter "-1.019" of third lens L15 represents the distance on the optical axis between the image-side surface S13 of third lens L15 and the object-side surface S14 of fourth lens L21 when the object distance is 1e+18 mm; the thickness parameter "-2.436" of third lens L15 represents the distance on the optical axis between the image-side surface S13 of third lens L15 and the object-side surface S14 of fourth lens L21 when the object distance is 100 mm.

[0206] As can be seen from Table 9.1, in the ninth embodiment of this application, when the object distance of the camera lens 10 is switched from infinity (distant view) to macro 100mm (close view), the focusing stroke of the focusing lens group (i.e. the first lens group G1) is 1.416mm.

[0207] Table 9.2

[0208] As shown in Tables 9.3 and 9.4, Table 9.3 shows some other key parameters of the optical system of the camera in the ninth embodiment of this application, and Table 9.4 shows the focal length and sens value of the optical system of the camera in the ninth embodiment of this application at an object distance of infinity.

[0209] Table 9.3

[0210] Table 9.4 Object Distance: INIFINIITY

[0211] Wherein, f1 is the focal length of the positive lens L01, f2 is the focal length of the first lens L11, f3 is the focal length of the negative lens L12, f4 is the focal length of the positive lens L13, f5 is the focal length of the third lens L15, f6 is the focal length of the fourth lens L21, f7 is the focal length of the fifth lens L24, f34 is the combined focal length of the negative lens L12 and the positive lens L13, f is the effective focal length of the optical lens 10, fg0 is the effective focal length of the front lens group G0, fg1 is the effective focal length of the first lens group G1, fg2 is the effective focal length of the second lens group G2, and fg01 is the combined focal length of the front lens group G0 and the first lens group G1.

[0212] like Figure 20 and Figure 21 As shown, Figure 20 This is a simulation diagram of the optical system of the camera in the ninth embodiment of this application at an object distance of infinity. Figure 21 This is a simulation diagram of the optical system of the camera in the ninth embodiment of this application at an object distance of 100mm. Figure 20 and Figure 21 The axial spherical aberration curve, astigmatism and field curvature curves at various image heights, and optical distortion curves of the optical lens 10 are shown. The axial spherical aberration curves include those corresponding to different wavelengths of the system (656.2725 nm, 587.5618 nm, and 486.1227 nm are shown in the illustration). Physically, these curves represent the deviation of light of a corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. Figure 20 and Figure 21The values ​​are all relatively small, indicating that the axial spherical aberration correction of optical lens 10 is relatively good. The astigmatism curve is used to illustrate the deviation of the convergence point of the fine beam from the ideal imaging plane in different fields of view. x represents the sagittal beam, and y represents the meridional beam; the horizontal axis represents the deviation along the optical axis, and the vertical axis represents the corresponding field of view. When a value in a certain field of view is too large, the image quality of that field of view is poor or there are higher-order aberrations. Figure 20 and Figure 21 The field curvature in both directions shown is small, indicating that the system has good depth of focus. The distortion diagram is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. Figure 20 and Figure 21 The deviation shown is small, ensuring that the image is not significantly distorted. Therefore, the optical system of the camera in the ninth embodiment of this application achieves low light aberration control and obtains clear image quality through reasonable surface shape and air gap design.

[0213] like Figure 22 As shown, Figure 22 This is an optical path diagram of the camera's optical system in the tenth embodiment of this application. Figure 22 The optical lens 10 shown is Figure 19 The main difference between the optical lens 10 shown is: Figure 20 The composition of the second lens group G2 is different, as detailed below: The fifth lens L24 includes a positive lens L22 and a negative lens L23 spaced apart. The combined optical power of the positive lens L22 and the negative lens L23 is negative. This arrangement increases the number of lens surfaces in the second lens group G2, increasing the design freedom of the second lens group G2, which is beneficial for correcting aberrations in the optical lens 10.

[0214] Among them, such as Figure 22 As shown, the positive lens L22 is positioned between the fourth lens L21 and the negative lens L23, but it is not limited to this; the negative lens L23 can also be positioned between the fourth lens L21 and the positive lens L22.

[0215] In some embodiments, such as Figure 22 As shown, there is an air gap between the positive lens L22 and the negative lens L23. However, it is not limited to this; the medium between the positive lens L22 and the negative lens L23 can be other media besides air, such as nitrogen or a gel layer.

[0216] The following section will analyze the specific parameters and simulation results. Figure 12 The optical system of the camera shown is described in detail.

[0217] As shown in Tables 10.1 and 10.2, Table 10.1 shows some key parameters of the optical system of the camera in the tenth embodiment of this application, and Table 10.2 shows the aspherical coefficients of each surface of the optical system of the camera in the tenth embodiment of this application.

[0218] Table 10.1

[0219] The meanings of the symbols in Table 10.1 above are explained as follows: In the table, the units for the parameters of radius of curvature, thickness, and light transmission radius are all mm. OBJ represents the object surface. In the object distance state at infinity, the object distance is set to 1e+18 mm, and in the macro state, the object distance is set to 100 mm.

[0220] S1 represents the object-side surface of the positive lens L01, and S2 represents the image-side surface of the positive lens L01. PRISM represents the first optical path deflection element 14, which is a prism with light-reflecting function. It has three surfaces S3, S4, and S5, where S3 is the first light-incident surface 142 near the object side, S4 is the first reflecting surface 141, and S5 is the first light-exit surface 143 near the image side. S6 represents the object-side surface of the first lens L11, and S7 represents the image-side surface of the first lens L11. STO represents the stop, which limits the size of the light-passing aperture and affects the amount of light entering the optical system. STO is located on the object-side surface S6 of the L11 lens. S8 represents the object-side surface of the negative lens L12, and S9 represents the image-side surface of the negative lens L12. S10 represents the object-side surface of the positive lens L13, and S11 represents the image-side surface of the positive lens L13. S12 represents the object-side surface of the third lens L15, and S13 represents the image-side surface of the third lens L15. S14 represents the object-side surface of the fourth lens L21, and S15 represents the image-side surface of the fourth lens L21. S16 represents the object-side surface of the negative lens L22, and S17 represents the image-side surface of the negative lens L22. S18 represents the object-side surface of the positive lens L23, and S19 represents the image-side surface of the positive lens L23. IRCF represents filter 30, which is an infrared filter 30. S21 is the object-side surface of filter 30, and S22 is the image-side surface of filter 30. IMA represents image plane IMAGE.

[0221] The thickness parameter "-3.817" of surface S5 represents the distance on the optical axis between the object-side surface S6 of the first lens L11 and the S5 surface of the prism when the object distance is 1e+18 mm; the thickness parameter "-2.408" of surface S5 represents the distance on the optical axis between the object-side surface S6 of the first lens L11 and the S5 surface of the prism when the object distance is 100 mm; the thickness parameter "-1.250" of third lens L15 represents the distance on the optical axis between the image-side surface S13 of third lens L15 and the object-side surface S14 of fourth lens L21 when the object distance is 1e+18 mm; the thickness parameter "-2.659" of third lens L15 represents the distance on the optical axis between the image-side surface S13 of third lens L15 and the object-side surface S14 of fourth lens L21 when the object distance is 100 mm.

[0222] As can be seen from Table 10.1, in the tenth embodiment of this application, when the object distance of the camera lens 10 is switched from infinity (distant view) to macro 100mm (close view), the focusing stroke of the focusing lens group (i.e. the first lens group G1) is 1.409mm.

[0223] Table 10.2

[0224] As shown in Tables 10.3 and 10.4, Table 10.3 shows some other key parameters of the optical system of the camera in the tenth embodiment of this application, and Table 10.4 shows the focal length and sens value of the optical system of the camera in the tenth embodiment of this application at an object distance of infinity.

[0225] Table 10.3

[0226] Table 10.4 Object Distance: INIFIINITY

[0227] Wherein, f1 is the focal length of the positive lens L01, f2 is the focal length of the first lens L11, f3 is the focal length of the negative lens L12, f4 is the focal length of the positive lens L13, f5 is the focal length of the third lens L15, f6 is the focal length of the fourth lens L21, f7 is the focal length of the negative lens L22, f8 is the focal length of the positive lens L23, f34 is the combined focal length of the negative lens L12 and the positive lens L13, f78 is the combined focal length of the negative lens L22 and the positive lens L23, f is the effective focal length of the optical lens 10, fg0 is the effective focal length of the front lens group G0, fg1 is the effective focal length of the first lens group G1, fg2 is the effective focal length of the second lens group G2, and fg01 is the combined focal length of the front lens group G0 and the first lens group G1.

[0228] like Figure 23 and Figure 24 As shown, Figure 23 This is a simulation diagram of the optical system of the camera in the tenth embodiment of this application at an object distance of infinity. Figure 24 This is a simulation diagram of the optical system of the camera in the tenth embodiment of this application at an object distance of 100mm. Figure 23 and Figure 24 The axial spherical aberration curve, astigmatism and field curvature curves at various image heights, and optical distortion curves of the optical lens 10 are shown. The axial spherical aberration curves include those corresponding to different wavelengths of the system (656.2725 nm, 587.5618 nm, and 486.1327 nm are shown in the illustration). Physically, these curves represent the deviation of light of a corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. Figure 23 and Figure 24 The values ​​are all relatively small, indicating that the axial spherical aberration correction of optical lens 10 is relatively good. The astigmatism curve is used to illustrate the deviation of the convergence point of the fine beam from the ideal imaging plane in different fields of view. x represents the sagittal beam, and y represents the meridional beam; the horizontal axis represents the deviation along the optical axis, and the vertical axis represents the corresponding field of view. When a value in a certain field of view is too large, the image quality of that field of view is poor or there are higher-order aberrations. Figure 23 and Figure 24 The field curvature in both directions shown is small, indicating that the system has good depth of focus. The distortion diagram is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. Figure 23 and Figure 24 The deviation shown is small, ensuring that the image is not significantly distorted. Therefore, the optical system of the camera in the tenth embodiment of this application achieves low light aberration control and obtains clear image quality through reasonable surface shape and air gap design.

[0229] like Figure 25 As shown, Figure 25 This is an optical path diagram of the camera's optical system in the eleventh embodiment of this application. Figure 25 The optical lens 10 shown is Figure 16 The main difference between the optical lenses 10 shown is the difference in the focus sensitivity parameter sens value, as detailed below: Figure 16 The optical lens 10 shown has a sensor value of 2.955 for the scene at an infinity focusing distance. Figure 25 The optical lens 10 shown has a sensor value of 1.71 for the scene at an infinity focusing distance.

[0230] The following section will analyze the specific parameters and simulation results. Figure 25 The optical system of the camera shown is described in detail.

[0231] As shown in Tables 11.1 and 11.2, Table 11.1 shows some key parameters of the optical system of the camera in the eleventh embodiment of this application, and Table 11.2 shows the aspherical coefficients of each surface of the optical system of the camera in the eleventh embodiment of this application.

[0232] Table 11.1

[0233] The meanings of the symbols in Table 11.1 above are explained as follows: In the table, the units for the parameters of radius of curvature, thickness, and light transmission radius are all mm. OBJ represents the object surface; the object distance is set to 1e+18 mm at infinity and 50 mm at macro. STO represents the stop, which limits the size of the light transmission aperture and controls the amount of light entering the optical system.

[0234] S1 represents the object-side surface of positive lens L01, and S2 represents the image-side surface of positive lens L01. S3 represents the object-side surface of positive lens L02, and S4 represents the image-side surface of positive lens L02. MIRROR represents the first optical path reversing element 14, which is a reflector with light reversal function. S8 represents the object-side surface of first lens L11, and S9 represents the image-side surface of first lens L11. S10 represents the object-side surface of negative lens L12, and S11 represents the image-side surface of negative lens L12. S12 represents the object-side surface of positive lens L13, and S13 represents the image-side surface of positive lens L13. S14 represents the object-side surface of third lens L15, and S15 represents the image-side surface of third lens L15. S16 represents the object-side surface of fourth lens L21, and S17 represents the image-side surface of fourth lens L21. S18 represents the object-side surface of the fifth lens L24, and S19 represents the image-side surface of the fifth lens L24. PRISM represents the second optical path deflection element 15, which is a prism with three surfaces S20, S21, and S23. S20 is the second incident surface 152 near the object side, S21 is the second reflecting surface 151, and S23 is the second emitting surface 153 near the image side. IRCF represents the filter 30, which is an infrared filter. S24 is the object-side surface of the filter 30, and S25 is the image-side surface S22 of the filter 30. IMA represents the image plane IMAGE.

[0235] A radius of curvature of 1.00E+18 indicates that the surface corresponding to this parameter is a plane with an infinite radius of curvature; the thickness parameter "-4.485" of the aperture STO represents the distance on the optical axis between the object-side surface S8 of the first lens L11 and the aperture when the object distance is 1e+18 mm; the thickness parameter "-0.500" of the aperture represents the distance on the optical axis between the object-side surface S8 of the first lens L11 and the aperture when the object distance is 50 mm; the thickness parameter "-0.450" of the third lens L15 represents the distance on the optical axis between the image-side surface S15 of the third lens L15 and the object-side surface S16 of the fourth lens L21 when the object distance is 1e+18 mm; the thickness parameter "-4.435" of the third lens L15 represents the distance on the optical axis between the image-side surface S15 of the third lens L15 and the object-side surface S16 of the fourth lens L21 when the object distance is 50 mm.

[0236] As can be seen from Table 11.1, in the camera of the eighth embodiment of this application, when the object distance of the photographed scene is switched from infinity (distant view) to macro 50mm (close view), the focusing stroke of the focusing lens group (i.e. the first lens group G1) is 3.985mm.

[0237] Table 11.2

[0238]

[0239] As shown in Tables 11.3 and 11.4, Table 11.3 shows some other key parameters of the optical system of the camera in the eleventh embodiment of this application, and Table 11.4 shows the focal length and sens value of the optical system of the camera in the eleventh embodiment of this application when the object distance is infinity.

[0240] Table 11.3

[0241] Table 11.4 Object Distance: INIFIINITY

[0242] Wherein, f1 is the focal length of positive lens L01, f2 is the focal length of positive lens L02, f3 is the focal length of first lens L11, f4 is the focal length of negative lens L12, f5 is the focal length of positive lens L13, f6 is the focal length of third lens L15, f7 is the focal length of fourth lens L21, f8 is the focal length of fifth lens L24, f12 is the combined focal length of positive lenses L01 and L02, f45 is the combined focal length of negative lens L12 and positive lens L13, f is the effective focal length of optical lens 10, fg0 is the effective focal length of front lens group G0, fg1 is the effective focal length of first lens group G1, fg2 is the effective focal length of second lens group G2, and fg01 is the combined focal length of front lens group G0 and first lens group G1.

[0243] like Figure 26 and Figure 27 As shown, Figure 26 This is a simulation diagram of the optical system of the camera in the eleventh embodiment of this application at an infinity object distance. Figure 27 This is a simulation diagram of the optical system of the camera in the eleventh embodiment of this application at an object distance of 50mm. Figure 26 and Figure 27 The axial spherical aberration curve, astigmatism and field curvature curves at various image heights, and optical distortion curves of the optical lens 10 are shown. The axial spherical aberration curves include those corresponding to different wavelengths of the system (656.2725 nm, 587.5618 nm, and 486.1327 nm are shown in the illustration). Physically, these curves represent the deviation of light of a corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. Figure 26 and Figure 27 The values ​​are all relatively small, indicating that the axial spherical aberration correction of optical lens 10 is relatively good. The astigmatism curve is used to illustrate the deviation of the convergence point of the fine beam from the ideal imaging plane in different fields of view. x represents the sagittal beam, and y represents the meridional beam; the horizontal axis represents the deviation along the optical axis, and the vertical axis represents the corresponding field of view. When a value in a certain field of view is too large, the image quality of that field of view is poor or there are higher-order aberrations. Figure 26 and Figure 27 The field curvature in both directions shown is small, indicating that the system has good depth of focus. The distortion diagram is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. Figure 26 and Figure 27 The deviation shown is small, ensuring that the image is not significantly distorted. Therefore, the optical system of the camera in the eleventh embodiment of this application achieves low light aberration control and obtains clear image quality through reasonable surface shape and air gap design.

[0244] The types of cross-sectional lines in the accompanying drawings are for distinguishing different components and should not be construed as limiting the materials of the components. The accompanying drawings are for illustrating structural composition and are not shown to scale of the actual product.

[0245] While the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may arise based on the claims of this application. To provide a thorough understanding of this application, many specific details will be included in the following description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0246] In the embodiments of this application, the terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," "third," "fourth," and "fifth" may explicitly or implicitly include one or more of that feature.

[0247] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0248] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The directional terms mentioned in the embodiments of this application, such as "upper," "lower," "left," "right," "inner," and "outer," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. "Multiple" refers to at least two.

[0249] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0250] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An optical lens, characterized in that, It includes a front lens group (G0) and a rear lens group (G10) arranged along the object side to the image side; the front lens group (G0) includes a first optical path deflection element (14) and at least one positive lens located on the object side of the first optical path deflection element (14), the first optical path deflection element (14) having a first reflecting surface (141) for reflecting the light beam passing through the at least one positive lens to the rear lens group (G10). The at least one positive lens has a first optical axis (11), and the rear lens group (G10) has a second optical axis (12). The second optical axis (12) includes an optical axis segment (121), the endpoint (O1) of which is located on the first reflecting surface (141), and the optical axis segment (121) extends toward the image side of the first reflecting surface (141). The front lens group (G0) is an image stabilization compensation lens group and can swing around the first rotation center axis (m); the first rotation center axis (m) is perpendicular to the first optical axis (11) and the second optical axis (12), and the first rotation center axis (m) intersects with the optical axis segment (121) or is located close to the optical axis segment (121); The first rotation center axis (m) is located on the image side of the first reflecting surface (141), and the first rotation center axis (m) passes through the intersection point (O2), or is located near the intersection point (O2); wherein, the intersection point (O2) is the intersection point of the first straight line (k3) and the optical axis segment (121), the first straight line (k3) is parallel to the first optical axis (11), and intersects the bottom edge (1411) of the first reflecting surface (141); The position near the intersection point (O2) is: the projection point of the first rotation center axis (m) on the first plane (2) is located in the closed region (182), and the first plane (2) is the plane determined by the first optical axis (11) and the second optical axis (12); The enclosed area (182) is symmetrical about the second optical axis (12) and includes a rectangular area and a semicircular area. The semicircular area is located on the side of the rectangular area close to the first reflective surface (141). The semicircular area is centered at the intersection point (O2) and has a radius of 3 mm. The length direction of the rectangular area is parallel to the second optical axis (12). The rectangular area has a length of 20 mm and a width of 6 mm. The intersection point (O2) is located on the short side of the rectangular area.

2. The optical lens according to claim 1, characterized in that, The front lens group (G0) can swing about the second rotation center axis (n); The second rotation center axis (n) coincides with the second optical axis (12); or, the second rotation center axis (n) is parallel to the second optical axis (12), and the second rotation center axis (n) is located close to the second optical axis (12).

3. The optical lens according to claim 1, characterized in that, The front lens group (G0) can swing about the second rotation center axis (n); The second rotation center axis (n) coincides with the first optical axis (11); or, the second rotation center axis (n) is parallel to the first optical axis (11), and the second rotation center axis (n) is located close to the first optical axis (11).

4. The optical lens according to any one of claims 1 to 3, characterized in that, The first optical path deflection element (14) is a reflector; Alternatively, the first optical path deflection element (14) is a prism and has a first light-incident surface (142) and a first light-exit surface (143). The first light-incident surface (142) is disposed facing the side where the at least one positive lens is located, and the first light-exit surface (143) is disposed facing the side where the rear lens group (G10) is located. Among the at least one positive lens, the positive lens adjacent to the prism is disposed at a distance from the first light-incident surface (142).

5. The optical lens according to any one of claims 1 to 4, characterized in that, The rear lens group (G10) includes a first lens group (G1) and a second lens group (G2). The first lens group (G1) is located between the front lens group (G0) and the second lens group (G2). The first lens group (G1) is a focusing lens group and can move relative to the front lens group (G0) along the second optical axis (12).

6. The optical lens according to claim 5, characterized in that, The focusing sensitivity parameter of the optical lens is sens=[1-(fg01 / fg0)] 2 (f / fg01) 2 Where f is the effective focal length of the optical lens, fg0 is the effective focal length of the front lens group (G0), and fg01 is the combined focal length of the front lens group (G0) and the first lens group (G1); the focus sensitivity parameter sens satisfies: sens≥1.

7.

7. The optical lens according to claim 6, characterized in that, sens satisfies: sens≥2.

3.

8. The optical lens according to claim 6 or 7, characterized in that, When the optical lens is focused on a distant scene, sens satisfies: 2.3≤sens≤3.

9. The optical lens according to any one of claims 5 to 8, characterized in that, The front lens group (G0) and the first lens group (G1) both have positive optical power, while the second lens group (G2) has negative optical power.

10. The optical lens according to claim 9, characterized in that, The first lens group (G1) includes a first lens (L11), a second lens (L14), and a third lens (L15) along the object-to-image direction. The first lens (L11) and the third lens (L15) both have positive optical power, and the second lens (L14) has either positive or negative optical power. There is a gap between adjacent lenses of the first lens (L11), the second lens (L14), and the third lens (L15). The second lens group (G2) includes a fourth lens (L21) and a fifth lens (L24) along the object-to-image direction. Both the fourth lens (L21) and the fifth lens (L24) have negative optical power, and there is a gap between the fourth lens (L21) and the fifth lens (L24).

11. The optical lens according to claim 10, characterized in that, The second lens (L14) includes a positive lens and a negative lens that are spaced apart.

12. The optical lens according to claim 10 or 11, characterized in that, The fifth lens (L24) includes a positive lens and a negative lens that are spaced apart.

13. The optical lens according to any one of claims 1 to 12, characterized in that, The optical lens further includes a second optical path deflection element (15), which is disposed on the image side of the rear lens group (G10). The second optical path deflection element (15) has a second reflective surface (151) for reflecting the light beam passing through the rear lens group (G10) toward one side of the second optical axis (12).

14. The optical lens according to claim 13, characterized in that, The second optical path deflection element (15) is a reflector; Alternatively, the second optical path deflection element (15) is a prism and has a second light-incident surface (152) and a second light-outceasing surface (153). The second light-incident surface (152) is disposed on the side where the rear lens group (G10) is located, and the second light-outceasing surface (153) is located on one side of the second optical axis (12).

15. A camera, characterized in that, It includes a photosensitive element (20) and an optical lens (10) according to any one of claims 1 to 14, wherein the photosensitive element (20) is disposed on the image side of the optical lens (10).

16. An electronic device, characterized in that, It includes a housing (200) and the camera as described in claim 15, the camera being mounted on the housing (200).

Images