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US 2025/0147280 A1Published application
Imaging lens system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsIl Yong PARK, Jong Gi LEE, Dong Hyuk JANG, Han Ul YOUN
Life of this patent
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Abstract
An imaging lens system includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed from an object side. The fourth lens has negative refractive power and the fifth lens has negative refractive power, and a ratio (TTL/2ImgHT) between a distance (TTL) from an object-side surface of the first lens to an imaging plane and a diagonal length (2ImgHT) of the imaging plane is 0.6 or less.
Claims12
An imaging lens system, comprising:
- a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed from an object side toward an imaging plane,
- wherein a radius of curvature of an image-side surface of the first lens is greater than a radius of curvature of an image-side surface of the fifth lens,
- wherein a radius of curvature of an object-side surface of the second lens is greater than a radius of curvature of an image-side surface of the third lens, and
- wherein −4.0<f2/f<−1.0 and 3.0<f3/f<6.0, where f is a focal length of the imaging lens system, f2 is a focal length of the second lens, and f3 is a focal length of the third lens.
1 more element
An imaging lens system, comprising:
- a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed from an object side toward an imaging plane,
- wherein the third lens comprises a convex image-side surface in a paraxial region,
- wherein a radius of curvature of an image-side surface of the first lens is greater than a radius of curvature of an object-side surface of the second lens,
- wherein 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 third lens,
- wherein a radius of curvature of an object-side surface of the fifth lens is greater than a radius of curvature of the image-side surface of the third lens, and
- wherein −5.0<f5/f<−1.0, where f is a focal length of the imaging lens system and f5 is a focal length of the fifth lens.
3 more elements
Dependencies are inferred from the claim text.