Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsPhil Ho JUNG, Ho Sik YOU
Life of this patent
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Abstract
An optical imaging system includes a first lens having positive refractive power and having a convex object-side surface; a second lens having negative refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having positive refractive power and having a convex image-side surface; and a seventh lens having negative refractive power and having a concave image-side surface, and the first to seventh lenses are disposed in order from an object side. In the optical imaging system, 1<f/f6 and V2<40, where f is a focal length of the optical imaging system, f6 is a focal length of the sixth lens, and V2 is an Abbe number of the second lens.
Claims14
An optical imaging system, comprising:
- a first lens having a refractive power
- a second lens having a refractive power;
- a third lens having a convex object-side surface;
- a fourth lens having a refractive power;
- a fifth lens having a refractive power;
- a sixth lens having a refractive power;
- and
- a seventh lens having a refractive power,
- wherein the first to seventh lenses are sequentially disposed from an object side to an imaging side,
- wherein a radius of curvature of an object-side surface of the fifth lens is greater than a radius of curvature of an object-side surface of the fourth lens,
- wherein the second lens has a focal length within a range of −20.0 mm to −10.0 mm, and
- wherein the third lens has a focal length equal to or greater than 18 mm.
An optical imaging system, comprising:
- a first lens having a refractive power
- a second lens having a refractive power;
- a third lens having a convex object-side surface;
- a fourth lens having a refractive power;
- a fifth lens having a refractive power;
- a sixth lens having a refractive power;
- and
- a seventh lens having a refractive power,
- wherein the first to seventh lenses are sequentially disposed from an object side to an imaging side,
- wherein a radius of curvature of an image-side surface of the seventh lens is greater than a radius of curvature of an object-side surface of the first lens,
- wherein the second lens has a focal length within a range of −20.0 mm to −10.0 mm, and
- wherein 1.0<f/f6,
- where f is a focal length of the optical imaging system and f6 is a focal length of the sixth lens.
Dependencies are inferred from the claim text.