Abstract: An optical system, a lens module, and an electronic device are provide. The optical system includes, in order from an object side to an image side along an optical axis, a first to seventh lenses. Each of the first lens, the third lens, and the sixth lens has a positive refractive power. Each of the second lens and the seventh lens has a negative refractive power. Each of the second lens, the third lens, and the sixth lens has an object-side surface which is convex near the optical axis. Each of the second lens and the seventh lens has an image-side surface which is concave near the oprtical axis. The third lens has an image-side surface which is convex near a periphery of the image-side surface of the third lens. The seventh lens has an object-side surface which is convex near the optical axis.

Abstract: An optical system, a lens module, and an electronic device are provided. The optical system includes in order from an object side to an image side a first lens to a fifth lens with refractive powers, where the first lens and a fourth lens have positive refractive powers. Object-side surfaces of the first and fifth lenses are convex near the optical axis. The object-side surfaces of the first and fifth lenses and image-side surfaces of the first, third, and fourth lenses are convex near peripheries. Image-side surfaces of the first and fifth lenses are concave near the optical axis. Object-side surfaces of the second, third, fourth, and fifth lenses are concave near peripheries.

Abstract: Embodiments of the disclosure provide an optical system, a lens module, and a terminal device. The optical system includes in order from an object side to an image side along an optical axis: a first lens with a positive refractive power, the first lens having an object-side surface which is convex at the optical axis; a second lens with a refractive power; a third lens with a refractive power; a fourth lens with a positive refractive power, the fourth lens having an object-side surface which is concave at the optical axis and an image-side surface which is convex at the optical axis; and a fifth lens with a negative refractive power. The second lens has an image-side surface cemented with an object-side surface of the third lens. The optical system satisfies the following expression: 1.0 mm?1<(n2+n3)/f1.4 mm?1.

Abstract: The present disclosure provides an optical imaging system, an image capturing module, and an electronic device. The optical imaging system includes, sequentially from an object side to an image side, a first lens having negative refractive power, a second lens having refractive power, a third lens having positive refractive power, a fourth lens having refractive power, a fifth lens having negative refractive power, and a sixth lens having positive refractive power. The optical imaging system satisfies the following condition: 87.0°/mm<FOV/f?128.0°/mm; where FOV is a maximum field of view of the optical imaging system and f is an effective focal length of the optical imaging system.

Abstract: An optical system, a lens module, and an electronic device are provide. The optical system includes, in order from an object side to an image side along an optical axis, a first to seventh lenses. Each of the first lens, the third lens, and the sixth lens has a positive refractive power. Each of the second lens and the seventh lens has a negative refractive power. Each of the second lens, the third lens, and the sixth lens has an object-side surface which is convex near the optical axis. Each of the second lens and the seventh lens has an image-side surface which is concave near the optical axis. The third lens has an image-side surface which is convex near a periphery of the image-side surface of the third lens. The seventh lens has an object-side surface which is convex near the optical axis.

Abstract: An optical imaging system is provided. The optical imaging system includes, in order from an object side to an image side along an optical axis: the first lens, the second lens, the third lens, the fourth lens, and the fifth lens. The optical imaging system satisfies the following expression: 0.5<(|SAG51|+SAG52)/CT5<3.5, where SAG51 represents a distance from an intersection of the object-side surface of the fifth lens and the optical axis to a projection of an edge of an optical effective area of the object-side surface of the fifth lens on the optical axis, SAG52 represents a distance from an intersection of the image-side surface of the fifth lens and the optical axis to a projection of an edge of an optical effective area of the image-side surface of the fifth lens on the optical axis, and CT5 represents a center thickness of the fifth lens on the optical axis.

Abstract: An optical system includes, in order from an object side to an image side along an optical axis, first to seventh lenses. The fifth lens has a refractive power. The fifth lens has an object-side surface which is concave near a periphery of the object-side surface of the fifth lens, and an image-side surface which is convex near a periphery of the image-side surface (S10) of the fifth lens. The sixth lens has a refractive power. The sixth lens has an object-side surface which is concave near a periphery of the object-side surface of the sixth lens, and an image-side surface which is convex near a periphery of the image-side surface of the the sixth lens. The seventh lens has a negative refractive power. The seventh lens has an object-side surface which is convex near the optical axis, and an image-side surface which is concave near the optical axis.

Abstract: An optical system, a lens module, and an electronic device are provided. The optical system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The fifth lens has an object-side surface and an image-side surface which are both aspheric surfaces. At least one of the object-side surface and the image-side surface of the fifth lens has at least one inflection point. The sixth lens has an object-side surface and an image-side surface which are both aspheric surfaces. At least one of the object-side surface and the image-side surface of the sixth lens has at least one inflection point.