Image capturing optical system, imaging apparatus and electronic device
AssigneeLargan Precision Co., Ltd.
InventorsPo-Lun Hsu, Hsin-Hsuan Huang
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Abstract
An image capturing optical system includes seven lens elements, the seven 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, a fifth lens element, a sixth lens element and a seventh lens element. An image-side surface of the fifth lens element is convex in a paraxial region thereof. An image-side surface of the sixth lens element is concave in a paraxial region thereof. The seventh lens element has negative refractive power.
Claims11
An image capturing optical system comprising seven lens elements, the seven 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, a fifth lens element, a sixth lens element and a seventh lens element;
- wherein each of the seven lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side;
- wherein the object-side surface of the first lens element is concave in a paraxial region thereof;
- the image-side surface of the fourth lens element is convex in a paraxial region thereof;
- the image-side surface of the seventh lens element comprises at least one convex critical point in an off-axis region thereof;
- wherein the image capturing optical system further comprises an aperture stop disposed between the second lens element and the third lens element;
- an absolute value of a curvature radius of the image-side surface of the fifth lens element is larger than an absolute value of a curvature radius of the object-side surface of the fifth lens element.
Dependencies are inferred from the claim text.