Abstract: This application discloses a long-focus lens, a camera module, and an electronic device. The long-focus lens includes a first lens assembly, a second lens assembly, and a third lens assembly that are arranged from an object side to an image side. The first lens assembly and the third lens assembly are fixed lens assemblies, and the second lens assembly is a focusing lens assembly. In a focusing process in which the long-focus lens is switched from a long shot to a close-up, the second lens assembly moves toward the object side along an optical axis, a combined focal length of the first lens assembly and the second lens assembly decreases, and a combined focal length of the second lens assembly and the third lens assembly decreases. The foregoing long-focus lens has a strong focusing capability and high imaging quality.

Abstract: Embodiments of this application disclose a zoom lens, a camera module, and a mobile terminal. The zoom lens includes a first lens group, a second lens group, a third lens group, and a fourth lens group that are arranged along an object side to an image side. The first lens group is a fixed lens group with positive focal power, the second lens group is a zoom lens group with negative focal power, the third lens group is a compensative lens group with positive focal power, and the fourth lens group is a fixed lens group with positive focal power. In a zooming process of the zoom lens from a short-focal end to a long-focal end, the second lens group moves towards the image side along an optical axis, and the third lens group moves towards the object side along the optical axis.

Abstract: A camera module comprises an image sensor having a size greater than or equal to 1/3.06 inch and less than or equal to 1/2.78 inch and a lens module comprising at least five lenses disposed in sequence between an object side and an image side of the camera module. A ratio between a half-image height of the lens module and a total track length of the camera module is greater than or equal to 0.5 and less than or equal to 0.6. A field of view of the lens module is greater than or equal to 100 degrees. An aperture of the lens module is greater than or equal to F1.8 and less than or equal to F2.4. An equivalent focal length of the lens module is greater than or equal to 10 mm and less than or equal to 20 mm.

Abstract: This application provides an optical lens, a camera module, and an electronic device. The optical lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens that are sequentially arranged from an object side to an image side. The first lens, the third lens, and the fifth lens all have positive focal power, the second lens and the fourth lens both have negative focal power, and the sixth lens has positive focal power or negative focal power. Object side surfaces and image side surfaces of the first lens to the sixth lens include at least one anamorphic aspherical surface. When the optical lens is applied to the camera module and the electronic device, the camera module and the electronic device can implement ultra-wide-angle photographing, and can also resolve a distortion problem in ultra-wide-angle imaging to a large degree.

Abstract: A zoom lens, a camera module, and a mobile terminal. The zoom lens includes a first lens group, a second lens group, and a third lens group arranged along an axis extending from an object side to an image side, where the first lens group is a fixed lens group with positive focal power nearest an object side, where the second lens group is a zoom lens group with negative focal power, where the third lens group is a compensative lens group with positive focal power nearest an image side to an image side, and where the second lens group is configured to move, in a zooming process of the zoom lens from a short-focal end to a long-focal end, toward the image side along an optical axis, and the where third lens group is configured to move toward the object side along the optical axis.

Abstract: Embodiments of this application provide a lens group, a camera module, and a terminal device. The lens group includes a first group, a second group, a third group, and a fourth group that are sequentially disposed from an object side to an image side along an optical axis of the lens group. The second group includes a doublet formed by gluing a second lens and a third lens together. The optical power of a lens in each group is designed to match the optical power of the doublet so that a compact high-quality long-focus lens group can be implemented and chromatic aberration may be eliminated.

Abstract: A lens group is provided, which includes a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4), and a fifth lens (L5) that are sequentially arranged from an object side to an image side, and a relative refractive index temperature coefficient ? of at least one lens meets: ?9×10?5???9×10?5. A temperature drift coefficient of the lens group falls within a small range, a temperature effect of the lens group is low, and a defocus phenomenon generated because the lens group changes with a temperature is weak. According to the application, a design difficulty of a voice coil motor in a lens can be reduced and user experience is improved.

Abstract: A lens assembly and an electronic device including the same are provided. The lens assembly includes a lens group. A lens that is in the lens group and that is close to an object side has a convex surface, and the convex surface protrudes from a shoulder of a lens tube. A head of the lens assembly may be reduced without affecting a maximum field of view of the lens assembly, so that the head of the lens assembly tends to be miniaturized. Therefore, a size of a hole provided on a display screen is reduced. Thus, a screen-to-body ratio of the display screen is improved.

Abstract: This application provides a lens module and an electronic device. The lens module includes an imaging lens group, a light filter, and an image sensor, the imaging lens group includes a plurality of lenses whose optical axes mutually overlap, the plurality of lenses include a liquid lens, a plastic lens, and a functional optical element, the functional optical element is a functional lens and/or a diffractive optical element, and a refractive index temperature coefficient ? of the functional lens meets: ?9:optical?5???9×10?5.

Abstract: A camera module and a terminal device having the camera module, the camera module including a plurality of lenses, where lenses of the plurality of lenses are sequentially arranged from an object side to an image side along a direction of an optical axis, where at least one of the plurality of lenses is a free-form lens, where the free-form lens is a non-rotationally symmetric lens, where a first lens of the plurality of lenses is a lens of the plurality of lenses nearest the object side in a direction from the object side to the image side, where a distance on the optical axis between an object-side surface of the first lens and an imaging surface is TTL, where an effective focal length of the camera module is EFL, and TTL/EFL?2.0.

Abstract: A camera module comprises an image sensor having a size greater than or equal to 1/3.06 inch and less than or equal to 1/2.78 inch and a lens module comprising at least five lenses disposed in sequence between an object side and an image side of the camera module. A ratio between a half-image height of the lens module and a total track length of the camera module is greater than or equal to 0.5 and less than or equal to 0.6. A field of view of the lens module is greater than or equal to 100 degrees. An aperture of the lens module is greater than or equal to F1.8 and less than or equal to F2.4. An equivalent focal length of the lens module is greater than or equal to 10 mm and less than or equal to 20 mm.

Abstract: A camera module comprises an image sensor having a size greater than or equal to 1/3.06 inch and less than or equal to 1/2.78 inch and a lens module comprising at least five lenses disposed in sequence between an object side and an image side of the camera module. A ratio between a half-image height of the lens module and a total track length of the camera module is greater than or equal to 0.5 and less than or equal to 0.6. A field of view of the lens module is greater than or equal to 100 degrees. An aperture of the lens module is greater than or equal to F1.8 and less than or equal to F2.4. An equivalent focal length of the lens module is greater than or equal to 10 mm and less than or equal to 20 mm.

Abstract: An antireflection film includes a plurality of convex structures formed on a light transmission surface included in an optical waveguide. A maximum radial length of a surface that is of each convex structure and that is close to the light transmission surface is less than a minimum value of a visible light wavelength. The maximum radial length of each convex structure gradually decreases in a direction away from the light transmission surface. A height of each convex structure is greater than or equal to 310 nm. A distance between geometric centers of surfaces that are of two adjacent convex structures and that are close to the light transmission surface is less than or equal to 220 nm.

Abstract: An optical component includes an optical component body and an anti-reflection coating, where the anti-reflection coating is disposed on a surface of the optical component body through which light passes, the anti-reflection coating is configured to reduce reflectance of the surface, and the anti-reflection coating and the optical component body are integrally formed.

Abstract: A terminal includes a camera, a laser transceiver, a protection glass, and an infrared cut-off coating. The camera includes an image sensor and N lenses; the image sensor is disposed at the rear of the N lenses, and is configured to: receive an optical signal penetrating the protection glass and the N lenses, and convert the optical signal into an electrical signal. The protection glass is disposed in front of the N lenses, and is configured to protect the N lenses. The laser transceiver is configured to transmit or receive a laser. The infrared cut-off coating is located on at least one surface of the protection glass and/or on at least one surface of at least one lens in the N lenses, and a cut-off wavelength of the infrared cut-off coating is corresponding to a center wavelength of the laser transmitted by the laser transceiver.

Abstract: A camera module comprises an image sensor having a size greater than or equal to 1/3.06 inch and less than or equal to 1/2.78 inch and a lens module comprising at least five lenses disposed in sequence between an object side and an image side of the camera module. A ratio between a half-image height of the lens module and a total track length of the camera module is greater than or equal to 0.5 and less than or equal to 0.6. A field of view of the lens module is greater than or equal to 100 degrees. An aperture of the lens module is greater than or equal to F1.8 and less than or equal to F2.4. An equivalent focal length of the lens module is greater than or equal to 10 mm and less than or equal to 20 mm.

Abstract: A terminal includes a camera, a laser transceiver, a protection glass, and an infrared cut-off coating. The camera includes an image sensor and N lenses; the image sensor is disposed at the rear of the N lenses, and is configured to: receive an optical signal penetrating the protection glass and the N lenses, and convert the optical signal into an electrical signal. The protection glass is disposed in front of the N lenses, and is configured to protect the N lenses. The laser transceiver is configured to transmit or receive a laser. The infrared cut-off coating is located on at least one surface of the protection glass and/or on at least one surface of at least one lens in the N lenses, and a cut-off wavelength of the infrared cut-off coating is corresponding to a center wavelength of the laser transmitted by the laser transceiver.

Abstract: Embodiments of the present invention disclose a photochromic lens module, a camera, and a terminal device. The photochromic lens module includes a lens module and a photochromic thin film. The lens module includes a first surface and a second surface. When the first surface is an incident surface, the second surface is a refractive surface; when the second surface is an incident surface, the first surface is a refractive surface. The photochromic thin film includes a first area and a second area. The photochromic thin film covers the first surface or the second surface. The first area uses a negative photochromic material, and the second area uses a positive photochromic material. By means of the embodiments of the present invention, a lens module can be effectively protected.

Abstract: A camera module includes a cover window, an infrared cut-off filter, and an anti-reflection coating. The anti-reflection coating is on at least one surface, through which light passes, of the optical protection window, or the anti-reflection coating is on at least one surface, through which light passes, of the infrared cut-off filter. The anti-reflection coating includes conical anti-reflection structures. A bottom diameter of the conical anti-reflection structure is 40 nm to 150 nm. A top diameter of the conical anti-reflection structure is 0% to 30% of the bottom diameter. A height of the conical anti-reflection structure is 150 nm to 300 nm. A spacing between two adjacent conical anti-reflection structures is ? to ? of a wavelength in a visible light band.

Abstract: Embodiments of the present invention disclose a photochromic lens module, a camera, and a terminal device. The photochromic lens module includes a lens module and a photochromic thin film. The lens module includes a first surface and a second surface. When the first surface is an incident surface, the second surface is a refractive surface; when the second surface is an incident surface, the first surface is a refractive surface. The photochromic thin film includes a first area and a second area. The photochromic thin film covers the first surface or the second surface. The first area uses a negative photochromic material, and the second area uses a positive photochromic material. By means of the embodiments of the present invention, a lens module can be effectively protected.