High resolution optical system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsPhil Ho JUNG, Il Yong PARK
Life of this patent
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Abstract
The present invention relates to a high resolution optical system. The optical system of the present invention includes, sequentially from an object side, a first lens having a positive refractive power and an object-side surface convex toward the object side; a second lens having a negative refractive power and an upwardly concave upper surface; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power and an upwardly convex upper surface; and a six lens having a negative refractive power and an upwardly concave upper surface.
Claims14
A high resolution optical system comprising, sequentially from an object side:
- a first lens having a positive refractive power;
- a second lens having a negative refractive power;
- a third lens having a positive refractive power;
- a fourth lens having a negative refractive power;
- a fifth lens having a positive refractive power and a convex image-side surface;
- and
- a sixth lens having a negative refractive power,
- wherein a thickness of the first lens at the optical axis is greater than a thickness of the third lens at the optical axis, a thickness of the sixth lens at the optical axis is greater than a thickness of the fourth lens at the optical axis, a distance from an image-side surface of the second lens to an object-side surface of the third lens is greater than a distance from an image-side surface of the first lens to an object-side surface of the second lens, and a radius of curvature of the object-side surface of the second lens is greater than a radius of curvature of the image-side surface of the first lens, and
- wherein the optical system satisfies |f4/f|>2.5, where f4 is a focal length of the fourth lens, and f is a focal length of the entire optical system.
A high resolution optical system comprising, sequentially from an object side:
- a first lens having a convex object-side surface;
- a second lens having a convex object-side surface;
- a third lens having a positive refractive power;
- a fourth lens having a negative refractive power;
- a fifth lens having a positive refractive power;
- and
- a sixth lens having a concave object-side surface,
- wherein a thickness of the sixth lens at the optical axis is greater than a thickness of the fourth lens at the optical axis, a distance from an image-side surface of the fourth lens to an object-side surface of the fifth lens is greater than a distance from an image-side surface of the second lens to an object-side surface of the third lens, and a radius of curvature of the object-side surface of the second lens is greater than a radius of curvature of an image-side surface of the first lens.
Dependencies are inferred from the claim text.