Optical imaging lens assembly, image capturing unit and electronic device
AssigneeLargan Precision Co., Ltd.
InventorWei-Yu Chen
Life of this patent
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Abstract
An optical imaging lens assembly includes seven lens elements which are, 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. The seventh lens element has an image-side surface being concave in a paraxial region thereof. At least one of an object-side surface and the image-side surface of the seventh lens element has at least one critical point in an off-axis region thereof. The object-side surface and the image-side surface of the seventh lens element are both aspheric.
Claims12
An optical imaging lens assembly 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 the second lens element has an image-side surface being concave in a paraxial region thereof, the seventh lens element has an image-side surface being concave in a paraxial region thereof, a focal length of the second lens element and a focal length of the fourth lens element have a same sign, the focal length of the fourth lens element and a focal length of the fifth lens element have different signs, and an axial distance between the first lens element and the second lens element is larger than an axial distance between the sixth lens element and the seventh lens element;
- wherein a maximum field of view of the optical imaging lens assembly is FOV, a curvature radius of an image-side surface of the first lens element is R2, a curvature radius of the image-side surface of the seventh lens element is R14, and the following conditions are satisfied:
- 110 degrees<FOV<220 degrees;
- and
- R14/R2|<1.0.
Dependencies are inferred from the claim text.