Abstract: An optical imaging system includes a first lens, a second lens, a third lens, and a fourth lens sequentially disposed from an object side toward an image side on an optical axis, and a reflecting member disposed closer to the object side, as compared to the first lens, and having a reflecting surface configured to change a path of light to be incident to the first to fourth lenses. The first to fourth lenses are disposed to be spaced apart from each other by a preset distance along the optical axis, and 1.3<TTL/BFL<3.5, where TTL is a distance from an object-side surface of the first lens to an imaging plane of an image sensor, and BFL is a distance from an image-side surface of the fourth lens to the imaging plane of the image sensor.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, sequentially disposed from an object side, wherein the first to fifth lenses are spaced apart from each other by predetermined distances along an optical axis in a paraxial region, the first lens and the second lens each have a non-circular shape when viewed in an optical axis direction, and the optical imaging system satisfies 0.62398<ZS1/ZS2<1.36318, where ZS1 is a ratio of an area of an object-side surface of the first lens to a distance from the object-side surface of the first lens to an imaging plane of an image sensor, and ZS2 is a ratio of an area of an object-side surface of the second lens to a distance from the object-side surface of the second lens to the imaging plane of the image sensor.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, sequentially disposed from an object side, wherein the first to fifth lenses are spaced apart from each other by predetermined distances along an optical axis in a paraxial region, the first lens and the second lens each have a non-circular shape when viewed in an optical axis direction, and the optical imaging system satisfies 0.62398<ZS1/ZS2<1.36318, where ZS1 is a ratio of an area of an object-side surface of the first lens to a distance from the object-side surface of the first lens to an imaging plane of an image sensor, and ZS2 is a ratio of an area of an object-side surface of the second lens to a distance from the object-side surface of the second lens to the imaging plane of the image sensor.

Abstract: An optical imaging system includes a first lens having positive refractive power, a second lens, a third lens, and a fourth lens, arranged sequentially from an object side along an optical axis. The first lens through the fourth lens are spaced apart from each other along the optical axis in a paraxial region. A total focal length f of a lens unit including the first lens through the fourth lens and half (IMG HT) of a diagonal length of an imaging surface of an image sensor satisfy f/IMG HT >4.9. An effective aperture radius of an object-side surface of the first lens and an effective aperture radius of an object-side surface of the second lens are both greater than effective aperture radii of an object-side surface and an image-side surface of each of the lenses other than the first lens and the second lens.

Abstract: An optical imaging system includes a first lens having positive refractive power, a second lens, a third lens, and a fourth lens, arranged sequentially from an object side along an optical axis. The first lens through the fourth lens are spaced apart from each other along the optical axis in a paraxial region. A total focal length f of a lens unit including the first lens through the fourth lens and half (IMG HT) of a diagonal length of an imaging surface of an image sensor satisfy f/IMG HT>4.9. An effective aperture radius of an object-side surface of the first lens and an effective aperture radius of an object-side surface of the second lens are both greater than effective aperture radii of an object-side surface and an image-side surface of each of the lenses other than the first lens and the second lens.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, and a fourth lens sequentially disposed from an object side toward an image side on an optical axis, and a reflecting member disposed closer to the object side, as compared to the first lens, and having a reflecting surface configured to change a path of light to be incident to the first to fourth lenses. The first to fourth lenses are disposed to be spaced apart from each other by a preset distance along the optical axis, and 1.3<TTL/BFL<3.5, where TTL is a distance from an object-side surface of the first lens to an imaging plane of an image sensor, and BFL is a distance from an image-side surface of the fourth lens to the imaging plane of the image sensor.

Abstract: An optical imaging system includes a first lens having positive refractive power, a second lens, a third lens, a fourth lens, and a fifth lens, arranged in order from an object side. The first lens is shaped such that a length of a first axis, which intersects an optical axis, is greater than a length of a second axis, which intersects the optical axis and is perpendicular to the first axis. The optical imaging system satisfies 4.5<TTL/IMG HT<6.5; 0.87<TTL/f<1.31; and 0.65<L1S1es/L1S1el<0.9.

Abstract: An optical imaging system includes a first lens having positive refractive power, a second lens, a third lens, a fourth lens, and a fifth lens, arranged in order from an object side. The first lens is shaped such that a length of a first axis, which intersects an optical axis, is greater than a length of a second axis, which intersects the optical axis and is perpendicular to the first axis. The optical imaging system satisfies 4.5<TTL/IMG HT<6.5; 0.87<TTL/f<1.31; and 0.65<L1S1es/L1S1el<0.9.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, and a fourth lens sequentially disposed from an object side toward an image side on an optical axis, and a reflecting member disposed closer to the object side, as compared to the first lens, and having a reflecting surface configured to change a path of light to be incident to the first to fourth lenses. The first to fourth lenses are disposed to be spaced apart from each other by a preset distance along the optical axis, and 1.3<TTL/BFL<3.5, where TTL is a distance from an object-side surface of the first lens to an imaging plane of an image sensor, and BFL is a distance from an image-side surface of the fourth lens to the imaging plane of the image sensor.

Abstract: An optical imaging system includes a lens group including at least one lens forming a first optical axis; and an optical path converter reflecting light emitted from the lens group to form an image on an imaging plane. In the optical imaging system, a maximum distance from an object side surface of a frontmost lens, disposed closest to an object side, among the lens group, to the imaging plane, in a first optical axis direction is 11.0 mm or less.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, sequentially disposed from an object side, wherein the first to fifth lenses are spaced apart from each other by predetermined distances along an optical axis in a paraxial region, the first lens and the second lens each have a non-circular shape when viewed in an optical axis direction, and the optical imaging system satisfies 0.62398<ZS1/ZS2<1.36318, where ZS1 is a ratio of an area of an object-side surface of the first lens to a distance from the object-side surface of the first lens to an imaging plane of an image sensor, and ZS2 is a ratio of an area of an object-side surface of the second lens to a distance from the object-side surface of the second lens to the imaging plane of the image sensor.

Abstract: An optical imaging system includes a first lens having positive refractive power, a second lens, a third lens, and a fourth lens, arranged sequentially from an object side along an optical axis. The first lens through the fourth lens are spaced apart from each other along the optical axis in a paraxial region. A total focal length f of a lens unit including the first lens through the fourth lens and half (IMG HT) of a diagonal length of an imaging surface of an image sensor satisfy f/IMG HT>4.9. An effective aperture radius of an object-side surface of the first lens and an effective aperture radius of an object-side surface of the second lens are both greater than effective aperture radii of an object-side surface and an image-side surface of each of the lenses other than the first lens and the second lens.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, sequentially disposed from an object side, wherein the first to fifth lenses are spaced apart from each other by predetermined distances along an optical axis in a paraxial region, the first lens and the second lens each have a non-circular shape when viewed in an optical axis direction, and the optical imaging system satisfies 0.62398<ZS1/ZS2<1.36318, where ZS1 is a ratio of an area of an object-side surface of the first lens to a distance from the object-side surface of the first lens to an imaging plane of an image sensor, and ZS2 is a ratio of an area of an object-side surface of the second lens to a distance from the object-side surface of the second lens to the imaging plane of the image sensor.

Abstract: A camera module includes: a lens module including a plurality of lenses; a housing accommodating the lens module; a reflection module disposed in front of the lens module; an image sensor module configured to receive light passing through the lens module; and a light blocking portion disposed in the housing and positioned in a space between the lens module and the image sensor module. The light blocking portion includes: a first light blocking plate including a first window having a first opening through which the light is allowed to pass; and a second light blocking plate including a second window having a second opening through which the light is allowed to pass. The first window includes a first inner wall including a first inclined surface, and the second window includes a second inner wall including a second inclined surface.

Abstract: An optical imaging system includes a first lens having positive refractive power, a second lens, a third lens, and a fourth lens, arranged sequentially from an object side along an optical axis. The first lens through the fourth lens are spaced apart from each other along the optical axis in a paraxial region. A total focal length f of a lens unit including the first lens through the fourth lens and half (IMG HT) of a diagonal length of an imaging surface of an image sensor satisfy f/IMG HT>4.9. An effective aperture radius of an object-side surface of the first lens and an effective aperture radius of an object-side surface of the second lens are both greater than effective aperture radii of an object-side surface and an image-side surface of each of the lenses other than the first lens and the second lens.

Abstract: An optical imaging system includes: a first lens having a concave image-side surface; a second lens having refractive power; a third lens having a concave image-side surface; a fourth lens having a concave object-side surface or a convex image-side surface; a fifth lens having refractive power; a sixth lens having a concave image-side surface; and a seventh lens having negative refractive power. The first to seventh lenses are sequentially disposed from an object side and 1.62<(N2+N5+N6)/3, where N2 is a refractive index of the second lens, N5 is a refractive index of the fifth lens, and N6 is a refractive index of the sixth lens.

Abstract: An optical imaging system includes: a first lens having a concave image-side surface; a second lens having refractive power; a third lens having a concave image-side surface; a fourth lens having a concave object-side surface or a convex image-side surface; a fifth lens having refractive power; a sixth lens having a concave image-side surface; and a seventh lens having negative refractive power. The first to seventh lenses are sequentially disposed from an object side and 1.62<(N2+N5+N6)/3, where N2 is a refractive index of the second lens, N5 is a refractive index of the fifth lens, and N6 is a refractive index of the sixth lens.

Abstract: An optical imaging system includes: a plurality of lenses disposed along an optical axis; and a reflection member closer to an object than the plurality of lenses, and including a reflection surface configured to change a path of light; wherein the plurality of lenses are spaced apart from each other by preset distances along the optical axis; and the condition 0.9<DF/DC<1.3 is satisfied, where DF is an effective aperture radius of an image-side surface of a lens closest to an image sensor among the plurality of lenses, and DC is an effective aperture radius of an object-side surface of a lens closest to the reflection member among the plurality of lenses.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the first to seventh lenses are spaced apart from each other along the optical axis, and the optical imaging system satisfies 0.1<L1w/L7w<0.4, where L1w is a weight of the first lens, L7w is a weight of the seventh lens, and L1w and L7w are expressed in a same unit of measurement.

Abstract: An optical imaging system includes: a plurality of lenses disposed along an optical axis; and a reflection member closer to an object than the plurality of lenses, and including a reflection surface configured to change a path of light; wherein the plurality of lenses are spaced apart from each other by preset distances along the optical axis; and the condition 0.9<DF/DC<1.3 is satisfied, where DF is an effective aperture radius of an image-side surface of a lens closest to an image sensor among the plurality of lenses, and DC is an effective aperture radius of an object-side surface of a lens closest to the reflection member among the plurality of lenses.