Abstract: An optical system, a camera lens, and an electronic device are provided, so as to implement lightening and thinning of the optical system, obtain a short total length, increase pixel counts of the optical system, and improve an image quality of the optical system. The optical system includes, an aperture stop, a first lens, a second lens, a third lens, a fourth, a fifth lens, a sixth lens, and a seventh lens. Object side surfaces of the first, second, and sixth lenses and image side surfaces of the third and fifth lenses are convex near the optical axis. Image side surfaces of the first, second, sixth, and seventh lenses and object side surfaces of the third, fifth, and seventh lenses are concave near the optical axis. The optical system satisfies following relationships: 1.45<FNO<1.9, 79 deg<FOV<91 deg, and 1.2<TTL/ImgH<1.4.

Abstract: An optical system, from an object side to an imaging side along an optical axis, sequentially includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and an image plane. Each of the first lens, the third lens, and the fifth lens has positive refractive power, each of the second lens, the fourth lens, and the sixth lens has negative refractive power. Object side surfaces of the first, second, third, and fifth lenses and an imaging side surface of the third lens are convex near the optical axis, imaging side surfaces of the first, second, fourth, fifth, and sixth lenses are concave near the optical axis. The optical system satisfies: 1.9<FNO<3.5, and 19°<FOV<33°, FNO is an aperture number of the optical system, and FOV is the maximum field of view angle of the optical system.

Abstract: An optical lens includes: a first lens, a second lens, and a fourth lens each having refractive power, a third lens and a sixth lens each having positive refractive power, a fifth lens and a seventh lens each having negative refractive power. An object side surface of the second lens, an object side surface and an imaging side surface of the third lens, and an object side surface of the sixth lens are both convex near the optical axis. An object side surface of the fifth lens, an imaging side surface of the sixth lens, and an imaging side surface of the seventh lens are both concave near the optical axis. The optical lens satisfies: 2.6<FNO<4, and 50 deg<FOV<90 deg. FNO is an aperture number of the optical lens, and FOV is the maximum field of view of the optical lens.

Abstract: An optical lens includes a first lens having negative refractive power, a second lens having positive power, a third lens having positive refractive power, a fourth lens having negative refractive power, and an image plane. An imaging side surface of the first lens is concave near the optical axis, object side surfaces of the second lens and the third lens are convex near the optical axis, and an object side surface of the fourth lens is concave near the optical axis. The optical lens satisfies: 110deg<FOV<155deg, and 1.7<TTL/ImgH<2.7. FOV is the maximum field of view angle of the optical lens, TTL is a distance from an object side surface of the first lens to the image plane of the optical lens along the optical axis, and ImgH is half of an image height corresponding to the maximum field of view of the optical lens.

Abstract: An optical system includes a first lens group comprising a first lens, a second lens, and a third lens, a second lens group comprising a fourth lens, a fifth lens, and a sixth lens, and an image plane. Object side surfaces of the first, second, third, and fifth lenses and an imaging side surface of the third lens are convex near the optical axis, imaging side surfaces of the second, fourth and fifth lenses and an object side surface of the sixth lens are concave near the optical axis. Each of the first, third, and fifth lenses has positive refractive power, each of the second, fourth, and six lenses has negative refractive power. The first lens group is fixed relative to the image plane, the second lens group is movably arranged between the first lens group and the image plane. The optical system satisfies: 5 deg<FOV<20 deg and 1.5<FNO<3.2.

Abstract: An optical system, a camera module, and an electronic device are provided. The optical system includes a first lens, a second lens, a third lens, and a fourth lens that are sequentially arranged. The first lens and the second lens form a first lens group. The third lens and the fourth lens form a second lens group. The first lens group is fixed relative to an imaging plane of the optical system, the second lens group can move along the optical axis between the first lens group and the imaging plane of the optical system. The optical system satisfies following relationships: 14deg<FOV<30deg, and 2<FNO<3.5. The optical system, the camera module, and the electronic device of the present disclosure can achieve miniaturization design, and can reduce the difficulty of zoom design and achieve mass production.

Abstract: An optical system consists of eight lenses with refractive power. From an object side to an image side along an optical axis of the optical system, the eight lenses sequentially include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens and the second lens form a first lens group with negative refractive power. The third lens to the fifth lens form a second lens group with positive refractive power. The sixth lens to the eighth lens form a third lens group having negative refractive power. The first lens group is fixed relative to an imaging plane of the optical system. Each of the second lens group and the third lens group can move along the optical axis between the first lens group and the imaging plane to realize zooming.

Abstract: A wide-angle lens, an image capturing device and an electronic device.

Abstract: An optical system sequentially includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens has negative refractive power. The second lens has positive refractive power. The third lens has refractive power. The fourth lens has positive and negative refractive power. The fifth lens has refractive power. Object side surfaces of the first, second, fourth, and fifth lenses are convex, and image side surfaces of the first, second, fourth, and fifth lenses are concave. An object side surface of the third lens is concave, and an image side surface of the third lens is convex. The first to fourth lenses constitute a movable lens group, and the fourth lens is a fixed lens group. The fixed lens group is fixed relative to an imaging plane, and the movable lens group is movable along the optical axis.

Abstract: An optical system, a camera module, and an electronic device are disclosed. The optical system consists of eight lenses having refractive power. From an object side to the image side along an optical axis of the optical system, the optical system sequentially includes a first, third, fifth, and seventh lenses having a positive refractive power and a second, fourth, and eighth lenses having a negative refractive power. Object side surfaces of the first, second, third, fifth, sixth, and seventh lenses are all convex near the optical axis, and image side surfaces of the first, second, fourth, sixth, seventh, and eighth lenses and an object side surface of the eighth lens are all concave near the optical axis. By reasonable design of each lens of the optical system, the optical system meets requirements of miniaturization and has good imaging effect and characteristics of adjustable aperture.

Abstract: Disclosed is an optical system (10) sequentially comprising, from an object side to an image side, a first lens (L1) having a positive refraction power, a second lens (L2), a third lens (L3) and a fourth lens (L4). An image side surface (S8) of the fourth lens (L4) is a concave surface on an optical axis, both an object side surface (S7) and the image side surface (S8) of the fourth lens (L4) are aspheric surfaces, and at least one of the object side surface (S7) and the image side surface (S8) of the fourth lens (L4) has a point of inflexion. The optical system (10) comprises a stop (STO), the stop (STO) being arranged between the object side of the first lens (L1) and the fourth lens (L4), and the optical system (10) satisfies: 0.5<SL/TTL<0.9, and ?1<SAG31/CT3<0.

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 camera module, and an electronic device are provided. The optical system consists of seven lenses, that is, a first lens, a fourth lens, a sixth lens which have positive refractive power, and a second lens, a third lens, a fifth lens, and a seventh lens which have negative refractive power. The Object side surfaces of the first, second, third, fifth, sixth, and seventh lenses and the image side surface of the fourth lens are all convex near the optical axis. The image side surfaces of the first, second, third, fifth, sixth, and seventh lenses are all concave near the optical axis. Through the above design of each lens of the optical system, the optical system may meet requirement of miniaturization, and may have good imaging performance and variable aperture.

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 lens with a negative refractive power, a second lens with a positive refractive power, a third lens with a negative refractive power, a fourth lens with a refractive power, a fifth lens with a positive refractive power, and a sixth lens with a negative refractive power. An object-side surface of the fifth lens has at least one inflection point. At least one of an object-side surface and an image-side surface of the sixth lens has at least one inflection point. The optical system satisfies the following expression: ?9<f4/|f1|<3.5.

Abstract: An optical system, a lens module, and an electronic device. The optical system consists of five lenses having refractive power, from an object side to the image side along an optical axis of the optical system, the fifth lenses sequentially comprising a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The first, second, and third lens constitute a fixed lens group, the fourth and fifth lens constitute a movable lens group, the fixed lens group is fixed relative to an imaging surface of the optical system, and the movable lens group is capable of moving between the fixed lens group and the imaging surface along the optical axis. The first lens has positive refractive power, an object side surface of the first lens is convex near the optical axis. The optical system satisfies following relational expressions: 0.9<TTL/fmax<1.1, 34deg<FOV<50deg, 0.7<TTL/ImgH<1.7.

Abstract: An optical imaging system sequentially includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical axis. The first lens has positive refractive power, with an object-side surface being convex at the optical axis; the second lens has refractive power, with an image-side surface being convex at the optical axis; the third lens has refractive power; the fourth lens has positive refractive power, with an image-side surface being convex at the optical axis; the fifth lens has negative refractive power, with an object-side surface being convex at the optical axis and an image-side surface being concave at the optical axis; a diaphragm is arranged between the object side of the optical imaging system and the fifth lens.

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 assembly, sequentially comprising from an object side to an image side: a first lens; a second lens having positive refractive power, the object side surface of the second lens being concave at the circumference, and the image side surface of the second lens being convex at the circumference; a third lens; and a fourth lens having positive refractive power, the image side surface of the fourth lens being concave at the optical axis, the object side surface and the image side surface of the fourth lens being aspherical, and at least one of the object side surface and the image side surface of the fourth lens having an inflection point. The optical lens assembly satisfies relationship: TT/f<1.3, TT is the distance on the optical axis from the object side surface of the first lens to the image side surface of the fourth lens, and f is effective focal length.

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, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens with, and a seventh lens. The first lens has an object-side surface which is convex at an optical axis and an image-side surface which is concave at the optical axis and at a circumference. The second lens has an object-side surface which is convex at the optical axis and an image-side surface which is concave at the optical axis and at a circumference. The seventh lens has an image-side surface, which is concave at the optical axis and has at least one inflection point. The optical system satisfies the following expression: f/EPD<1.7.