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US 2026/0309957 A1Published application
Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJin Hwa JUNG, Yong Joo JO, Young Suk KANG
Life of this patent
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Abstract
An optical imaging system includes a first lens, a second lens, a third lens including a concave object side surface, a fourth lens, a fifth lens, and a sixth lens sequentially disposed from an object side toward an image side. The optical imaging system satisfies 0.7<TL/f<1.0 and F No.<2.1, where TL is a distance from an object side of the first lens to an imaging plane, f is a total focal length of the optical imaging system, and F No. is the F No. of the optical imaging system.
Claims12
An optical imaging system comprising:
- a first lens having a positive refractive power;
- a second lens having a refractive power;
- a third lens having a refractive power;
- a fourth lens having a refractive power;
- a fifth lens having a refractive power;
- and
- a sixth lens having a refractive power,
- wherein the first to sixth lenses are sequentially disposed in ascending numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system,
- D45/TL<0.18, where TL is a distance along the optical axis from an object-side surface of the first lens to the imaging plane, and D45 is a distance along the optical axis from an image-side surface of the fourth lens to an object-side surface of the fifth lens,
- an absolute value of a radius of curvature of an image-side surface of the second lens is greater than an absolute value of a radius of curvature of an object-side surface of the third lens, and
- an absolute value of a radius of curvature of an image-side surface of the third lens is greater than an absolute value of a radius of curvature of an image-side surface of the fifth lens.
8 more elements
An optical imaging system comprising:
- a first lens having a positive refractive power;
- a second lens having a refractive power;
- a third lens having a refractive power;
- a fourth lens having a refractive power;
- a fifth lens having a refractive power;
- and
- a sixth lens having a refractive power,
- wherein the first to sixth lenses are sequentially disposed in ascending numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system,
- D45/TL<0.18, where TL is a distance along the optical axis from an object-side surface of the first lens to the imaging plane, and D45 is a distance along the optical axis from an image-side surface of the fourth lens to an object-side surface of the fifth lens,
- an absolute value of a radius of curvature of an image-side surface of the second lens is greater than an absolute value of a radius of curvature of an object-side surface of the second lens, and
- an absolute value of a radius of curvature of an image-side surface of the third lens is greater than an absolute value of a radius of curvature of an image-side surface of the fifth lens.
8 more elements
Dependencies are inferred from the claim text.