The present disclosure discloses a camera lens assembly. The camera lens assembly has an effective focal length f and an entrance pupil diameter EPD, and includes a first lens, a second lens, a third lens, and a fourth lens in sequence from an object side to an image side along an optical axis. The first lens has a negative refractive power, and an image-side surface thereof is a concave surface. The second lens has a positive refractive power or a negative refractive power. The third lens has a positive refractive power. The fourth lens has a positive refractive power or a negative refractive power, and an image-side surface thereof is a convex surface. An effective radius DT11 of an object-side surface of the first lens and half of a diagonal length ImgH of an effective pixel area on an electronic photosensitive element of the camera lens assembly satisfy: 1.2<DT11/ImgH<2.6.

An embodiment provides an imaging lens comprising first to fourth lenses that are sequentially arranged from an object side towards an image side and satisfying mathematical formula 1, wherein the first lens has negative refractive power, the second lens and the third lens have positive refractive power, and the fourth lens has negative refractive power. −40.0<R1+R2<−20.0 where R1 is the curvature radius of the object side surface of the first lens, and R2 is the curvature radius of the image side surface of the first lens.

An embodiment provides an imaging lens comprising first to fourth lenses that are sequentially arranged from an object side towards an image side and satisfying mathematical formula 1, wherein the first lens has negative refractive power, the second lens and the third lens have positive refractive power, and the fourth lens has negative refractive power. −40.0<R1+R2<−20.0 where R1 is the curvature radius of the object side surface of the first lens, and R2 is the curvature radius of the image side surface of the first lens.

A lens system includes, in order from an object side to an image plane side: a first lens element having a negative power; a second lens element whose concave surface faces the object side; and a third lens element having a positive power, and satisfies conditions (1) and (2).
0.205<|(TL1/TA).Math.tan(ω)|  (1)
0.120<IH/TA<0.170  (2) where TL1 is a central thickness of the first lens element, TA is a total optical length, ω is a half angle of view, and IH is an image height of the lens system.

The present disclosure discloses an optical imaging lens assembly. The optical imaging lens assembly comprises: an imaging lens group, composed of a first lens, a second lens, a third lens, a fourth lens and a fifth lens that are sequentially arranged along an optical axis from an object side to an image side; a fourth spacing elements; and a lens barrel, forming an accommodation space in which the imaging lens group and the fourth spacing elements are accommodated. The lens barrel comprises an object-end surface close to the object side, an image-end surface close to the image side, an inner wall and an outer wall.

An electronic device includes at least one optical lens assembly. The optical lens assembly includes four lens elements, and the four lens elements are, in order from an outside to an inside, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has an outside surface being convex in a paraxial region thereof. The second lens element has an inside surface being convex in a paraxial region thereof. The fourth lens element has an inside surface being concave in a paraxial region thereof, wherein at least one of an outside surface and the inside surface of the fourth lens element includes at least one critical point in an off-axis region thereof.

An optical system includes first to third units. The first unit includes a first substrate and a first lens having negative refractive power. The first lens is disposed on the image side of the first substrate. The second unit includes a second substrate and a second lens having positive refractive power. The second lens is disposed on the object side or image side of the second substrate. The third unit includes a third substrate and a third lens having positive refractive power. The third lens is disposed on the object side or image side of the third substrate. At least one of the first to third lenses constitutes a cemented lens including a fourth lens. The fourth lens and the lens cemented with the fourth lens in the cemented lens have refractive powers different from each other and Abbe numbers different from each other.

An optical system includes first to third units. The first unit includes a first substrate and a first lens having negative refractive power. The first lens is disposed on the image side of the first substrate. The second unit includes a second substrate and a second lens having positive refractive power. The second lens is disposed on the object side or image side of the second substrate. The third unit includes a third substrate and a third lens having positive refractive power. The third lens is disposed on the object side or image side of the third substrate. At least one of the first to third lenses constitutes a cemented lens including a fourth lens. The fourth lens and the lens cemented with the fourth lens in the cemented lens have refractive powers different from each other and Abbe numbers different from each other.

A camera optical lens is provided, including, from an object side to an image side: a first lens having negative refractive power; a second having positive refractive power; a third lens having positive refractive power; and a fourth lens having negative refractive power, where the camera optical lens satisfies following conditions: −3.00≤f1/f≤−1.20; 4.00≤f2/f≤9.00; 15.00≤R4/R3; 2.50≤R7/R8≤6.00; and 10.00≤d5/d6≤20.00. The above camera optical lens can meet design requirements for large aperture and wide angle, while obtaining high imaging quality.

A camera optical lens is provided, including, from an object side to an image side: a first lens having negative refractive power; a second having positive refractive power; a third lens having positive refractive power; and a fourth lens having negative refractive power, where the camera optical lens satisfies following conditions: −3.00≤f1/f≤−1.20; 4.00≤f2/f≤9.00; 15.00≤R4/R3; 2.50≤R7/R8≤6.00; and 10.00≤d5/d6≤20.00. The above camera optical lens can meet design requirements for large aperture and wide angle, while obtaining high imaging quality.