Abstract: Provided is a lens optical system. The lens optical system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens sequentially arranged in the stated order between an object and an image sensor. The first lens, the third lens, and the fifth lens have a positive (+) power, and the second lens, the fourth lens, and the sixth lens have a negative (?) power.

Abstract: Disclosed is a photographic optical lens system. The disclosed photographic optical lens system includes a stop, a lens group including at least one aspherical lens, and an image sensor configured to record an image transmitted through the lens group, wherein the photographic optical lens system satisfies the following Expression: 0.15?(DL1-L2)/OAL?0.4??<Expression> where DL1-L2 in Expression denotes a distance from a center of a first surface of a lens closest to an object (hereinafter, referred to as a first lens) to a center of a second surface of a second lens arranged directly next to the first lens, and OAL denotes a distance (a total length of the lens group) from the center of the first surface of the first lens to a center of a second surface of a lens arranged farthest from the object.

Abstract: Provided is a photographing lens optical system. The lens optical system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens sequentially arranged from an object to an image sensor. The first lens may have a negative (?) refractive power and have an exit surface that is concave with respect to the image sensor. The lens optical system may satisfy at least one of a condition 100°<FOV<200° and a condition 1<TTL/ImgH<2. Herein, FOV denotes an angle of view of the lens optical system, TTL denotes a distance from an incidence surface of the first lens to the image sensor, and ImgH denotes a diagonal length of a maximum pixel region of the image sensor.

Abstract: Provided is an optical photographing lens system. The optical lens system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens that are sequentially arranged from an object toward an image sensor. The fifth lens has a positive (+) power and the sixth lens has a negative (?) power, and the fifth lens and the sixth lens are cemented together to form a cemented lens having a positive (+) power.

Abstract: Provided are a lens optical system and a photographing device including the lens optical system. The lens optical system includes first to eighth lenses that are sequentially arranged from an object side toward an image plane side and respectively have negative, negative, positive, positive, positive, negative, positive, and positive refractive powers. The lens optical system may satisfy an ultra-wide-angle condition: 130?FOV?240, where FOV (unit: °) refers to the field of view of the lens optical system.

Abstract: Provided is a lens optical system for image capturing. The lens optical system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens that are sequentially arranged in the stated order between an object and an image sensor.

Abstract: Provided are a lens optical system and an imaging device including the lens optical system. The lens optical system includes first to sixth lenses sequentially arranged from an object side toward an image plane side. The first to sixth lenses have negative, positive, positive, negative, positive, and negative refractive powers, respectively. The lens optical system may satisfy 100?FOV?160, and DiaL3?DiaL1?DiaL6 where FOV refers to the field of view of the lens optical system in degrees (°), and DiaL1, DiaL3, and DiaL6 refer to the effective diameters of the first lens, the third lens, and the sixth lens, respectively.

Abstract: Provided are a super wide-angle lens and an imaging device including the same. The super wide-angle lens includes first to sixth lenses arranged from an object side toward an image plane side in this stated order and respectively having negative, positive, positive, negative, positive, and negative refractive powers. The super wide-angle lens may have a field of view of 100 degree or more.

Abstract: Provided is a photographing lens optical system. The lens optical system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens sequentially arranged from an object to an image sensor. The first lens may have a negative (?) refractive power and have an exit surface that is concave with respect to the image sensor. The lens optical system may satisfy at least one of a condition 100°<FOV<200° and a condition 1<TTL/ImgH<2. Herein, FOV denotes an angle of view of the lens optical system, TTL denotes a distance from an incidence surface of the first lens to the image sensor, and ImgH denotes a diagonal length of a maximum pixel region of the image sensor.

Abstract: Provided are an optical lens system and an imaging apparatus including the optical lens system. The optical lens system includes first to sixth lenses that are sequentially arranged from an object side toward an image plane side and have negative, negative, positive, positive, negative, and positive refractive powers, respectively. The optical lens system may satisfy 0.15<(L1toL2)/OAL<0.4. Here, L1toL2 (unit: mm) refers to the distance between the center of an entrance surface of the first lens and the center of an exit surface of the second lens, and OAL (unit: mm) refers to the distance between the center of the entrance surface of the first lens and the center of an exit surface of the sixth lens.

Abstract: Provided are a lens optical system and an imaging device including the lens optical system. The lens optical system includes first to sixth lenses sequentially arranged from an object side toward an image plane side. The first to sixth lenses have negative, positive, positive, negative, positive, and negative refractive powers, respectively. The lens optical system may satisfy 100?FOV?160, and DiaL3?DiaL1?DiaL6 where FOV refers to the field of view of the lens optical system in degrees (°), and DiaL1, DiaL3, and DiaL6 refer to the effective diameters of the first lens, the third lens, and the sixth lens, respectively.

Abstract: Disclosed is a photographic optical lens system. The disclosed photographic optical lens system includes a stop, a lens group including at least one aspherical lens, and an image sensor configured to record an image transmitted through the lens group, wherein the photographic optical lens system satisfies the following Expression: 0.15?(DL1-L2)/OAL?0.4??<Expression> where DL1-L2 in Expression denotes a distance from a center of a first surface of a lens closest to an object (hereinafter, referred to as a first lens) to a center of a second surface of a second lens arranged directly next to the first lens, and OAL denotes a distance (a total length of the lens group) from the center of the first surface of the first lens to a center of a second surface of a lens arranged farthest from the object.

Abstract: Provided are a super wide-angle lens and an imaging device including the same. The super wide-angle lens includes first to sixth lenses arranged from an object side toward an image plane side in this stated order and respectively having negative, positive, positive, negative, positive, and negative refractive powers. The super wide-angle lens may have a field of view of 100 degree or more.

Abstract: In a lens optical system having first, second, and third lenses that are arranged between an object and an image sensor where an image of the object is formed, in order from an object side, the first lens has a positive (+) refractive power and is convex toward the object, the second lens has a negative (?) refractive power and is convex toward the image sensor, and the third lens has a positive (+) refractive power and at least one of an incident surface and an exit surface of the third lens has at least one inflection point between a center portion and an edge thereof. The lens optical system satisfies the following inequality that 0.5<f1/f<0.8, in which f1 is a focal length of the first lens and f is a total focal length of the lens optical system.

Abstract: Provided are a lens assembly and an optical system including the same. The lens assembly may include a first lens having a groove region, a second lens having an insertion region that is inserted into the groove region, and a light blocking member between the first lens and the second lens. The light blocking member may be disposed between a first surface portion of the first lens and a second surface portion of the second lens, and the light blocking member may be separated from at least one of the first surface portion and the second surface portion. The lens assembly may further include at least one additional lens. The lens assembly may be applied to various optical systems.

Abstract: A lens optical system including first, second, third, fourth, and fifth lenses that are sequentially arranged between an object and an image sensor on which an image of the object is formed. The first lens may have a positive refractive power and may be biconvex. The second lens may have a negative refractive power and may have a meniscus shape that is convex toward the object. The third lens may have a positive refractive power. The fourth lens may have a positive refractive power and may have a meniscus shape that is convex toward the image sensor. The fifth lens may have a negative refractive power, and at least one of an incident surface and an exit surface of the fifth lens may be an aspherical surface.

Abstract: A lens optical system includes first, second, third, fourth, and fifth lenses that are arranged between an object and an image sensor where an image of the object is formed, in order from an object side, wherein the first lens has a positive (+) refractive power and an incident surface that is convex toward the object, the second lens has a negative (?) refractive power and a meniscus shape that is convex toward the object, the third lens has a positive (+) refractive power and both convex surfaces, the fourth lens has a positive (+) refractive power and a meniscus shape that is convex toward the image sensor, and the fifth lens has a negative (?) refractive power and an incident surface and an exit surface, at least one of the incident surface and the exit surface is an aspherical surface.

Abstract: A lens optical system includes first, second, third, and fourth lenses that are arranged between an object and an image sensor, in order from an object side, wherein the first lens has positive refractive power and an incident surface that is convex toward the object, the second lens has negative refractive power and both surfaces of which are concave, the third lens has positive refractive power and a meniscus shape that is convex toward the image sensor, and the fourth lens has negative refractive power and at least one of an incident surface and an exit surface of which is an aspherical surface, wherein the system satisfies the inequality, 3.0<TTL/BL<3.4, wherein TTL is a distance from the incident surface of the first lens to the image sensor and BL is a distance from the exit surface of the fourth lens to the image sensor.

Abstract: A lens optical system including first, second, third, fourth, and fifth lenses that are sequentially arranged between an object and an image sensor on which an image of the object is formed. The first lens may have a positive refractive power and may be biconvex. The second lens may have a negative refractive power and may have a meniscus shape that is convex toward the object. The third lens may have a positive refractive power. The fourth lens may have a positive refractive power and may have a meniscus shape that is convex toward the image sensor. The fifth lens may have a negative refractive power, and at least one of an incident surface and an exit surface of the fifth lens may be an aspherical surface.

Abstract: A lens optical system including first, second, third, fourth, and fifth lenses sequentially arranged between an object and an image sensor on which an image of the object is formed, in order from a side of the object. The first lens has a positive (+) refractive power and is biconvex. The second lens has a negative (?) refractive power and a meniscus shape convex toward the object. The third lens has a negative (?) refractive power. The fourth lens has a positive (+) refractive power and a meniscus shape convex toward the image sensor. The fifth lens has a negative (?) refractive power, and at least one of an incident surface and an exit surface of the fifth lens is an aspherical surface. A focal length f1 of the first lens and a total length TL of the lens optical system satisfies inequality: 0.5<f1/TL<1.0.