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.
Claims16
An optical imaging system, comprising:
- a first lens having positive refractive power and comprising 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 comprising a convex image-side surface;
- and
- a seventh lens having negative refractive power and comprising a concave image-side surface,
- wherein the first to seventh lenses are disposed in order from an object side, and
- wherein:
- 1<f/f6
- 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.
An optical imaging system, comprising:
- a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens disposed in order from an object side,
- wherein:
- F No.<1.8
- V2<40,
- where V2 is an Abbe number of the second lens.
Dependencies are inferred from the claim text.