Imaging optical lens assembly, image capturing apparatus and electronic device
AssigneeLargan Precision Co., Ltd.
InventorsKuan-Ming Chen, Hsin-Hsuan Huang
Life of this patent
Estimating the term…
Abstract
The present disclosure provides an imaging optical lens assembly, including, in order from an object side to an image side: a first lens element with negative refractive power having an object-side surface being concave in a paraxial region, a second lens element with positive refractive power, a third lens element with negative refractive power, a fourth lens element with positive refractive power, and a fifth lens element with negative refractive power having an image-side surface being concave in a paraxial region and at least one convex shape in an off-axial region on the image-side surface, wherein the imaging optical lens assembly has a total of five lens elements.
Claims29
An imaging optical lens assembly, comprising five lens elements, the five lens elements being, 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;
- each of the five lens elements comprising an object-side surface facing toward the object side and an image-side surface facing toward the image side;
- wherein the first lens element has negative refractive power and the object-side surface being concave in a paraxial region thereof and having at least one convex surface in an off-axis region thereof, the second lens element has positive refractive power, the third lens element has positive refractive power, the fourth lens element has positive refractive power, the fifth lens element has negative refractive power and the image-side surface being concave in a paraxial region thereof and having at least one convex surface in an off-axis region thereof;
- wherein an axial distance between the object-side surface of the first lens element and an image surface is TL, a maximum image height of the imaging optical lens assembly is ImgH, and the following condition is satisfied:
- TL/ImgH<3.0.
An imaging optical lens assembly, comprising five lens elements, the five lens elements being, 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;
- each of the five lens elements comprising an object-side surface facing toward the object side and an image-side surface facing toward the image side;
- wherein the first lens element has negative refractive power and the object-side surface being concave in a paraxial region thereof, the fifth lens element has negative refractive power, the image-side surface of the fifth lens element is concave in a paraxial region thereof and has at least one convex surface in an off-axis region thereof, an aperture stop is disposed between the first lens element and the second lens element;
- wherein a focal length of the first lens element is f1, a focal length of the third lens element is f3, and the following condition is satisfied:
- f1/f3<2.0.
An imaging optical lens assembly, comprising five lens elements, the five lens elements being, 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;
- each of the five lens elements comprising an object-side surface facing toward the object side and an image-side surface facing toward the image side;
- wherein the first lens element has negative refractive power and the object-side surface being concave in a paraxial region thereof, the fourth lens element has positive refractive power, the fifth lens element has the image-side surface being concave in a paraxial region thereof and having at least one convex surface in an off-axis region thereof, an aperture stop is disposed between the first lens element and the second lens element;
- wherein a focal length of the first lens element is f1, a focal length of the third lens element is f3, a curvature radius of the object-side surface of the first lens element is R1, a focal length of the imaging optical lens assembly is f, and the following conditions are satisfied:
- f1/f3<5.0;
- and
- −10.0<R1/M<0.
An imaging optical lens assembly, comprising five lens elements, the five lens elements being, 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;
- each of the five lens elements comprising an object-side surface facing toward the object side and an image-side surface facing toward the image side;
- wherein the first lens element has the object-side surface being concave in a paraxial region thereof and having at least one convex surface in an off-axis region thereof, the second lens element has the image-side surface being convex in a paraxial region thereof, the third lens element has the image-side surface being concave in a paraxial region thereof, the fifth lens element has negative refractive power and the object-side surface being concave in a paraxial region thereof, the image-side surface of the fifth lens element is concave in a paraxial region thereof and has at least one convex surface in an off-axis region thereof;
- wherein a focal length of the first lens element is f1, a focal length of the third lens element is f3, and the following condition is satisfied:
- f1/f3<2.0.
Dependencies are inferred from the claim text.