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US 2024/0402468 A1Published application
Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJin Hwa JUNG, Yong Joo JO
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Abstract
An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, sequentially disposed from an object side to an imaging plane. The optical imaging system satisfies the expression BFL/f<0.15, where BFL represents a distance from an image-side surface of the eighth lens to an imaging plane of an image sensor and f represents an overall focal length of the optical imaging system.
Claims15
An optical imaging system comprising:
- a first lens having a positive refractive power and a convex object-side surface in a paraxial region thereof;
- a second lens having a negative refractive power, a convex object-side surface in a paraxial region thereof and a concave image-side surface in a paraxial region thereof;
- a third lens having a refractive power, a convex object-side surface in a paraxial region thereof and a concave image-side surface in a paraxial region thereof;
- a fourth lens having a positive refractive power;
- a fifth lens having a negative refractive power;
- a sixth lens having a refractive power;
- a seventh lens having a negative refractive power;
- and
- an eighth lens having a refractive power,
- wherein the first to eighth lenses are sequentially disposed from an object side to an imaging plane,
- wherein the optical imaging system has a total of eight lenses, and
- wherein 0.7<TTL/f<1.0, where TTL represents a distance from the object-side surface of the first lens to the imaging plane, and f represents an overall focal length of the optical imaging system.
9 more elements
Dependencies are inferred from the claim text.