Imaging lens assembly, image capturing apparatus and electronic device
AssigneeLargan Precision Co., Ltd.
InventorsKuan-Ming Chen, Wei-Yu Chen
Life of this patent
Estimating the term…
Abstract
An imaging 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, a fifth lens element and a sixth lens element. The third lens element has positive refractive power. The fifth lens element has both an object-side surface and an image-side surface being aspheric. The sixth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof, wherein an object-side surface and the image-side surface of the sixth lens element are aspheric.
Claims27
An imaging lens assembly comprising, in order from an object side to an image side:
- a first lens element;
- a second lens element;
- a third lens element having positive refractive power;
- a fourth lens element;
- a fifth lens element having an object-side surface and an image-side surface being both aspheric;
- and
- a sixth lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof, wherein the object-side surface and an image-side surface of the sixth lens element are aspheric;
- wherein the imaging lens assembly has a total of six lens elements, there is an air gap between every two of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element that are adjacent to each other;
- wherein an incident angle of a chief ray at a maximum image height on an image surface of the imaging lens assembly is CRA1.0Y, a focal length of the first lens element is f1, a focal length of the second lens element is f2, a focal length of the third lens element is f3, a focal length of the fourth lens element is f4, a focal length of the fifth lens element is f5, a focal length of the sixth lens element is f6, an axial distance between the fourth lens element and the fifth lens element is T45, an axial distance between the fifth lens element and the sixth lens element is T56, and the following conditions are satisfied:
- 38.0 degrees≦CRA1.0Y,
- |f6|<|f3|<|f1|;
- |f6|<|f3|<|f2|;
- |f6|<|f3|<|f4|;
- |f6|<|f3|<|f5|;
- and
- 0.70<T56/T45.
An imaging lens assembly comprising, 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;
- a fifth lens element;
- and
- a sixth lens element;
- wherein the imaging lens assembly has a total of six lens elements, there is an air gap between every two of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element that are adjacent to each other;
- wherein the imaging lens assembly further comprises an aperture stop disposed between an imaged object and the third lens element, at least one surface of at least one lens element of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element comprises at least one critical point;
- wherein an incident angle of a chief ray at a maximum image height on an image surface of the imaging lens assembly is CRA1.0Y, an axial distance between an object-side surface of the first lens element and the image surface is TL, the maximum image height of the imaging lens assembly is ImgH, an entrance pupil diameter of the imaging lens assembly is EPD, an axial distance between an image-side surface of the sixth lens element and the image surface is BL, and the following conditions are satisfied:
- 45.0 degrees<CRA1.0Y,
- 0<TL/(tan(CRA1.0Y)×ImgH)<2.0;
- and
- 1.25<EPD/BL.
Dependencies are inferred from the claim text.