Imaging optical lens assembly, image capturing apparatus and electronic device
AssigneeLargan Precision Co., Ltd.
InventorsKuan-Ming Chen, Hsin-Hsuan Huang
Life of this patent
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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.
Claims22
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 a total number of lens elements in the imaging optical lens assembly is five, the first lens element has negative refractive power, the object-side surface of the first lens element is concave in a paraxial region thereof, the image-side surface of the second lens element is convex in a paraxial region thereof, both of the object-side surface and the image-side surface of the fourth lens element are aspheric, the object-side surface of the fourth lens element is concave in a paraxial region thereof;
- wherein an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, a focal length of the first lens element is f1, a focal length of the third lens element is f3, and the following conditions are satisfied:
- 0.3<(V3+V5)/V4<1.0;
- and
- f1/f3<5.0.
An imaging optical lens assembly, comprising five lens element, 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 a total number of lens elements in the imaging optical lens assembly is five, the object-side surface of the first lens element is concave in a paraxial region thereof, both of the object-side surface and the image-side surface of the fourth lens element are aspheric, the object-side surface of the fourth lens element is concave in a paraxial region thereof and the image-side surface of the fourth lens element is convex in a paraxial region thereof, a central thickness of the first lens element of the first lens element is larger than a central thickness of the fifth lens element;
- wherein an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, and the following condition is satisfied:
- 0.3<(V3+V5)/V4<1.0.
Dependencies are inferred from the claim text.