Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsByung Hyun Kim, Tae Yeon Lim, Yong Joo Jo
Life of this patent
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Abstract
An optical imaging system includes a first lens group including two or more lenses, and a second lens group including two or more lenses. The first lens group and the second lens group are sequentially arranged from an object side, and the second lens group is configured to be movable in an optical axis direction. 0.8<TTL/f<1.2. Here, TTL is a distance from an object-side surface of the foremost lens of the first lens group to an imaging plane, and f is a focal length of the optical imaging system.
Claims18
An optical imaging system comprising:
- a first lens group including two or more lenses;
- and
- a second lens group including two or more lenses,
- wherein the first lens group and the second lens group are sequentially arranged from an object side,
- wherein the first and second lens groups comprise a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, sequentially arranged from the object side,
- wherein the fourth lens has a concave object-side surface,
- wherein the fifth lens has positive refractive power,
- wherein the second lens group is configured to be movable in an optical axis direction, and
- wherein 0.8<TTL/f<1.2 and 0.32<f3/f<0.82, in which TTL is a distance from an object-side surface of the foremost lens of the first lens group to an imaging plane, f is a focal length of the optical imaging system, and f3 is a focal length of the third lens.
An optical imaging system comprising:
- a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens that are sequentially arranged from an object side,
- wherein an image-side surface of the third lens is convex,
- wherein the fourth lens has a concave object-side surface,
- wherein the fifth lens has positive refractive power, and
- wherein 0.8<TTL/f<1.2, 0.32<f3/f<0.82, and −1.0<R1/R4<1.0, where TTL is a distance from an object-side surface of the first lens to an imaging plane, f is a focal length of the optical imaging system, f3 is a focal length of the third lens, R1 is a radius of curvature of the object-side surface of the first lens, and R4 is a radius of curvature of an image-side surface of the second lens.
An optical imaging system comprising:
- a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens that are sequentially arranged from an object side and divided into a first lens group and a second lens group of two or more lenses each,
- wherein the fourth lens has a concave object-side surface,
- wherein the fifth lens has positive refractive power,
- wherein the second lens group is disposed toward the image side of the first lens group and configured to be movable in an optical axis direction,
- wherein the optical imaging system includes no more than six lenses, and
- wherein 0.32<f3/f<0.82, where f is a focal length of the optical imaging system and f3 is a focal length of the third lens.
Dependencies are inferred from the claim text.