Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorYong Joo Jo
Life of this patent
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Abstract
An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens includes a convex object-side surface and a concave image-side surface. The second lens includes a concave object-side surface and a concave image-side surface. The third lens includes a concave object-side surface. The fourth lens includes a concave object-side surface. The fifth lens includes a concave object-side surface and a concave image-side surface. The first to fifth lenses are sequentially disposed from an object side toward an imaging plane.
Claims16
An optical imaging system comprising:
- a first lens having positive refractive power;
- a second lens having negative refractive power and a convex object-side surface;
- a third lens having a refractive power;
- a fourth lens having positive refractive power;
- and
- a fifth lens having negative refractive power,
- wherein the first to fifth lenses are sequentially disposed from an object side toward an imaging plane,
- wherein R10>R4, where R10 is a radius of curvature of the image-side surface of the fifth lens and R4 is a radius of curvature of the image-side surface of the second lens,
- wherein a distance from the image-side surface of the third lens to the object-side surface of the fourth lens is greater than a distance from an image-side surface of the fourth lens to the object-side surface of the fifth lens, and
- wherein R3>R1 and R3>R2, where R3 is a radius of curvature of an object-side surface of the second lens, R1 is a radius of curvature of an object-side surface of the first lens, and R2 is a radius of curvature of an image-side surface of the first lens.
An optical imaging system comprising:
- a first lens having positive refractive power;
- a second lens having negative refractive power and a convex object-side surface;
- a third lens having a refractive power;
- a fourth lens having positive refractive power;
- and
- a fifth lens having negative refractive power,
- wherein the first to fifth lenses are sequentially disposed from an object side toward an imaging plane,
- wherein a distance from the image-side surface of the third lens to the object-side surface of the fourth lens is greater than a thickness of the fourth lens, and the distance from the image-side surface of the third lens to the object-side surface of the fourth lens is greater than a distance from an image-side surface of the fourth lens to the object-side surface of the fifth lens,
- wherein the second lens has a focal length of −6.0 mm to −4.0 mm, and
- wherein R3>R1 and R3>R2, where R3 is a radius of curvature of an object-side surface of the second lens, R1 is a radius of curvature of an object-side surface of the first lens, and R2 is a radius of curvature of an image-side surface of the first lens.
Dependencies are inferred from the claim text.