Back to results
US 11,906,709 B2Granted
Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJin Hwa Jung, Yong Joo Jo
Life of this patent
Estimating the term…
Abstract
An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens having a negative refractive power, a fifth lens having a negative refractive power, a sixth lens, and a seventh lens having a positive refractive power. The first lens to seventh lens are sequentially disposed in a direction from an object side toward an imaging plane.
Claims16
An optical imaging system, comprising:
- a first lens comprising a convex object-side surface;
- a second lens comprising a refractive power;
- a third lens comprising a convex object-side surface;
- a fourth lens comprising negative refractive power and a convex object-side surface;
- a fifth lens comprising negative refractive power;
- a sixth lens comprising a concave image-side surface;
- and
- a seventh lens comprising a refractive power,
- wherein the first to seventh lenses are sequentially disposed from an object side to an image plane, and
- wherein a distance from an image-side surface of the fourth lens to an object-side surface of the fifth lens is greater than a thickness along an optical axis of the fifth lens.
7 more elements
An optical imaging system, comprising:
- a first lens comprising a refractive power;
- a second lens comprising a concave image-side surface;
- a third lens comprising a refractive power;
- a fourth lens comprising negative refractive power and a convex object-side surface;
- a fifth lens comprising a refractive power;
- a sixth lens comprising a concave image-side surface;
- and
- a seventh lens comprising a refractive power,
- wherein the first to seventh lenses are sequentially disposed from an object side to an image plane,
- wherein a radius of curvature of an object-side surface of the second lens is greater than a radius of curvature of an image-side surface of the seventh lens, and
- wherein BFL/f<0.15, where BFL represents a distance from an image-side surface of the seventh lens to the imaging plane and f is a focal length of the optical imaging system.
8 more elements
Dependencies are inferred from the claim text.