Patent ID: 11899169
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. A lens assembly comprising:
a first lens having positive refractive power;
a second lens having negative refractive power; and
a third lens having negative refractive power,
wherein the first lens, the second lens, and the third lens are sequentially arranged from an object side toward an image sensor side,
wherein the first lens has a biconvex shape that is convex toward the object side and convex toward the image sensor side,
wherein each of the second lens and the third lens has a meniscus shape that is convex toward the image sensor side,
wherein a total track length of the lens assembly is TTL, a combined focal length of the lens assembly is f′, a field of view of the lens assembly is FoV, a telephoto ratio of the lens assembly satisfies TTL/f′<1.0, and the field of view satisfies 0.25<tan(FoV)<0.5, and
where a focal length of the second lens is f2, a focal length of the third lens is f3, and a power configuration of the lens assembly satisfies:

1.6<(1/f3)/(1/f2)<2.5.