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US 2014/0368929 A1Published application
Optical system for camera
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorKyu Min Chae
Life of this patent
Estimating the term…
Abstract
Disclosed herein is an optical system for a camera. The optical system for a camera includes: a first lens having positive refractive power and a meniscus shape concave toward an image; a second lens having negative refractive power and a shape concave toward the image; a third lens having the positive refractive power and a shape convex toward an object; a fourth lens having the positive refractive power and a shape convex toward the image; and a fifth lens having the negative refractive power, a shape convex toward the object and concave to the image, and one or more inflection point provided on an image surface.
Claims31
1-8. (canceled)
An optical system, comprising:
- a first lens having positive refractive power and being convex toward an object side;
- a second lens having negative refractive power and being convex toward the object side and concave toward an image side;
- a third lens having positive refractive power and being convex toward the image side;
- a fourth lens having a refractive power and being concave toward the object side and convex toward the image side;
- and
- a fifth lens having a refractive power and being convex toward the object side, the fifth lens comprising an image-side surface being concave in the center and convex at the periphery,
- wherein:
- one or more inflection points are formed on the image-side surface of the fifth lens,
- the second and fourth lenses have a meniscus shape,
- the first lens, the second lens, the third lens, the fourth lens and the fifth lens are arranged in order from the object side toward the image side,
- a thickness of the fifth lens is the thickest among the first lens, the second lens, the third lens, the fourth lens and the fifth lens, and
- a radius R31 of curvature of an object-side surface of the third lens and a focal length f of the optical system satisfy the following conditional expression:
- R31/f<1.2.
10 more elements
An optical system, comprising:
- a first lens having positive refractive power and being convex toward an object side and concave toward an image side;
- a second lens having negative refractive power and being convex toward the object side and concave toward the image side;
- a third lens having positive refractive power and being convex toward the image side;
- a fourth lens having a refractive power and being concave toward the object side and convex toward the image side;
- and
- a fifth lens having a refractive power and being convex toward the object side, the fifth lens comprising an image-side surface being concave in the center and convex at the periphery,
- wherein:
- one or more inflection points are formed on the image-side surface of the fifth lens,
- the first, second and fourth lenses have a meniscus shape,
- the first lens, the second lens, the third lens, the fourth lens and the fifth lens are arranged in order from the object side toward the image side, and
- a radius R31 of curvature of an object-side surface of the third lens and a focal length f of the optical system satisfy the following conditional expression:
- R31/f<1.2.
9 more elements
An optical system, comprising:
- a first lens having positive refractive power and being convex toward an object side;
- a second lens having negative refractive power and being convex toward the object side and concave toward an image side;
- a third lens having positive refractive power and being convex toward the image side;
- a fourth lens having a refractive power and being concave toward the object side and convex toward the image side;
- and
- a fifth lens having a refractive power and comprising:
- an object-side surface being convex in the center and concave at the periphery;
- and
- an image-side surface being concave in the center and convex at the periphery,
- wherein:
- the second and fourth lenses have a meniscus shape,
- the first lens, the second lens, the third lens, the fourth lens and the fifth lens are arranged in order from the object side toward the image side,
- a thickness of the fifth lens is the thickest among the first lens, the second lens, the third lens, the fourth lens and the fifth lens, and
- a radius R31 of curvature of an object-side surface of the third lens and a focal length f of the optical system satisfy the following conditional expression:
- R31/f<1.2.
12 more elements
An optical system, comprising:
- a first lens having positive refractive power and being convex toward an object side and concave toward an image side;
- a second lens having negative refractive power and being convex toward the object side and concave toward the image side;
- a third lens having positive refractive power and being convex toward the image side;
- a fourth lens having a refractive power and being concave toward the object side and convex toward the image side;
- and
- a fifth lens having a refractive power and comprising:
- an object-side surface being convex in the center and concave at the periphery;
- and
- an image-side surface being concave in the center and convex at the periphery,
- wherein:
- one or more inflection points are formed on the image-side surface of the fifth lens,
- the first, second and fourth lenses have a meniscus shape,
- the first lens, the second lens, the third lens, the fourth lens and the fifth lens are arranged in order from the object side toward the image side, and
- a radius R31 of curvature of an object-side surface of the third lens and a focal length f of the optical system satisfy the following conditional expression:
- R31/f<1.2.
12 more elements
Dependencies are inferred from the claim text.