Abstract: An optical system, a camera module, and an electronic device are provided. The optical system includes a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a third lens group having a positive refractive power which are sequentially arranged from an object side to an image side along an optical axis of the optical system. The first lens group includes a first lens. The second lens group includes a second lens, a third lens, and a fourth lens. The third lens group includes a fifth lens, a sixth lens, a seventh lens, and an eighth lens. A distance between any two groups of the first lens group, the second lens group, and the third lens group is adjustable such that the optical system is operable to be at a telephoto end, an intermediate, and a wide-angle end.

Abstract: An optical system includes: a stop; a first lens having a positive refractive power, an object side surface being convex at a paraxial area; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens having a positive refractive power, an image side surface being convex at a paraxial area; a seventh lens; and an eighth lens, an image side surface) being concave a paraxial area. The optical system satisfies the condition: (MIN6*MAX8/MAX6*MIN8)?2. MIN6 is a minimum thickness of the sixth lens in a direction of an optical axis, MAX6 is a maximum thickness of the sixth lens in the direction of the optical axis, MIN8 is a minimum thickness of the eighth lens in the direction of the optical axis, and MAX8 is a maximum thickness of the eighth lens in the direction of the optical axis.

Abstract: An optical lens sequentially includes, from an object side to an image side, a first lens having a negative focal power, a second lens having a negative focal power; a third lens having a positive focal power, a fourth lens having a negative focal power, a fifth lens having a negative focal power, a sixth lens having a positive focal power, and a seventh lens having a negative focal power. The optical lens satisfies the following relation: ?5<f2/f1<15, maximum optical distortion ?10%. Where, f1 is a focal length of the first lens, and f2 is a focal length of the second lens.

Abstract: The present application relates to a base (10), a camera module (100), and an electronic device (1000). The base (10) is used for bearing a lens (20), and comprises: a substrate (1) connected to the lens (20), the substrate (1) being provided with a mounting hole (13); an optical sensing chip (2) provided in the mounting hole (13) and opposite to the lens (20), a gap (6) being provided between a sidewall (21) of the optical sensing chip (2) and an inner wall (131) of the mounting hole (13); and a connection structure (3) provided in the gap (6) and connected to the optical sensing chip (2) and the substrate (1) respectively to fix the optical sensing chip (2) to the substrate (1).

Abstract: The present application relates to a base (10), a camera module (100) and an electronic device (1000). The base (10) is used for bearing a lens (20), and comprises: a substrate (1) connected to the lens (20), the substrate (1) being provided with a mounting hole (13); a photosensitive chip (2) arranged in the mounting hole (13) and opposite the lens (20); and a support structure (6) arranged in the mounting hole (13), connected to an inner wall (131) of the mounting hole (13) and connected to a surface, away from the lens (20), of the photosensitive chip (2) so as to support the photosensitive chip (2).