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US 2023/0418031 A1Published application
Optical imaging system and mobile electronic device
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsPhil Ho JUNG, Yong Joo JO, Jae Hyun BAIK
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, a fifth lens, and a sixth lens, sequentially disposed from an object side. The first lens has negative refractive power, an image side surface thereof is concave, and an angle of view of the optical system including the first lens to the sixth lens is 100° or more. When a focal length of the first lens is f1_1, and a total focal length of the optical system including the first lens to the sixth lens is F1, 1.0<|f1_1/F1|<2.0 is satisfied.
Claims20
An optical imaging system comprising:
- a first lens having negative refractive power, a concave object-side surface and a concave image-side surface;
- a second lens having positive refractive power, a convex object-side surface and a concave image-side surface;
- a third lens having positive refractive power;
- a fourth lens having negative refractive power;
- a fifth lens having positive refractive power;
- and
- a sixth lens having negative refractive power,
- wherein the first to sixth lenses are sequentially disposed from an object side,
- wherein TTL1/F1>2.0 is satisfied, where TTL1 is a distance from the object side surface of the first lens to an imaging surface, and F1 is a total focal length of the optical imaging system, and
- wherein 0.5<R2_1/F1<2.0 is satisfied, where R2_1 is a radius of curvature of the image-side surface of the first lens.
7 more elements
Dependencies are inferred from the claim text.