US 2024/0176113 A1Published application

Photographing optical lens assembly, image capturing unit and electronic device

AssigneeLargan Precision Co., Ltd.

InventorWei-Yu CHEN

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Abstract

A photographing optical 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, a sixth lens element and a seventh lens element. The first lens element with refractive power has an object-side surface being convex in a paraxial region thereof. Each second, third, fourth and fifth lens element has refractive power. The sixth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof, and both of the surfaces of the sixth lens element are aspheric. The seventh lens element with refractive power has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface has at least one convex shape in an off-axis region thereof.

Claims23

Dependent claims

A photographing optical 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, and each of the seven lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side;

wherein the second lens element has positive refractive power, the image-side surface of the second lens element is concave in a paraxial region thereof, the object-side surface and the image-side surface of the seventh lens element are both aspheric, the image-side surface of the seventh lens element is concave in a paraxial region thereof, and the image-side surface of the seventh lens element has at least one convex shape in an off-axis region thereof;
wherein the photographing optical lens assembly further comprises an aperture stop disposed between an imaged object and the object-side surface of the third lens element, and a focal length of the fourth lens element and a focal length of the sixth lens element have different signs;
and
wherein a sum of central thicknesses of the seven lens elements is ΣCT, an axial distance between the object-side surface of the first lens element and the image-side surface of the seventh lens element is Td, and the following condition is satisfied:
0.60<ΣCT/Td<0.85.

2 more elements

wherein the second lens element has positive refractive power, the image-side surface of the second lens element is concave in a paraxial region thereof, the object-side surface and the image-side surface of the seventh lens element are both aspheric, the image-side surface of the seventh lens element is concave in a paraxial region thereof, and the image-side surface of the seventh lens element has at least one convex shape in an off-axis region thereof;
wherein an absolute value of a focal length of the sixth lens element is larger than an absolute value of a focal length of the third lens element, and an absolute value of a curvature radius of the object-side surface of the fourth lens element is larger than an absolute value of a curvature radius of the image-side surface of the seventh lens element;
and
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 photographing optical lens assembly is ImgH, and the following condition is satisfied:
TL/ImgH<3.0.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/435,346Filed 7 Feb 2024
Priority: TW 1031264741 Aug 2014
Published: 30 May 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G02B 13/0045
Having at least one aspherical surface: having five or more lenses
G02B 9/64
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -: having more…
G02B 27/0025
Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00: for optical correction, e.g. distorsion,…
G02B
Optical elements, systems or apparatus

Family

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