US 8,896,936 B2Granted

Image capturing lens assembly

AssigneeLargan Precision Co., Ltd.

InventorsTsung-Han Tsai, Hsin-Hsuan Huang

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Abstract

An image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element has refractive power. The fourth lens element has refractive power, wherein both of an object-side surface and an image-side surface thereof are aspheric. The fifth lens element with positive refractive power has a concave object-side surface and a convex image-side surface, wherein both of the object-side surface and the image-side surface thereof are aspheric. Each of the first through fifth lens elements with refractive power is single and non-cemented. The image capturing lens assembly has a total of five lens elements with refractive power.

Claims25

Dependent claims

An image capturing lens assembly comprising, in order from an object side to an image side:

a first lens element with positive refractive power having a convex object-side surface;
second lens element having negative refractive power;
a third lens element having refractive power;
a fourth lens element having refractive power, wherein both of an object-side surface and an image-side surface of the fourth lens element are aspheric;
and
a fifth lens element with positive refractive power having a concave object-side surface and a convex image-side surface, wherein both of the object-side surface and the image-side surface of the fifth lens element are aspheric;
wherein each of the first through fifth lens elements with refractive power is single and non-cemented, the image capturing lens assembly has a total of five lens elements with refractive power and further comprises a stop, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, an axial distance between the stop and the image-side surface of the fifth lens element is Sd, an axial distance between the object-side surface of the first lens element and the image-side surface of the fifth lens element is Td, an axial distance between the image-side surface of the fifth lens element and an image plane is BL, and the following relationships are satisfied:
0<T45/T34<0.8;
0.7<Sd/Td<1.2;
and
0.1<BL/Td<0.7.

8 more elements

An image capturing lens assembly comprising, in order from an object side to an image side:

a first lens element with positive refractive power having a convex object-side surface;
a second lens element having negative refractive power;
a third lens element having refractive power;
a fourth lens element having refractive power, wherein both of an object-side surface and an image-side surface of the fourth lens element are aspheric;
and
a fifth lens element with positive refractive power having a concave object-side surface and a convex image-side surface, wherein both of the object-side surface and the image-side surface of the fifth lens element are aspheric;
wherein each of the first through fifth lens elements with refractive power is single and non-cemented, the image capturing lens assembly has a total of five lens elements with refractive power and further comprises a stop, at least one inflection point is formed on at least one of the object-side surface and the image-side surface of at least one of the first through fifth lens elements, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, an axial distance between the stop and the image-side surface of the fifth lens element is Sd, an axial distance between the object-side surface of the first lens element and the image-side surface of the fifth lens element is Td, and the following relationships are satisfied:
0<T45/T34<1.2;
and
0.7<Sd/Td<1.2.

7 more elements

Dependencies are inferred from the claim text.