Photographing optical lens assembly, image capturing device and electronic device
AssigneeLargan Precision Co., Ltd.
InventorHsin-Hsuan Huang
Life of this patent
Estimating the term…
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 and a sixth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element has refractive power. Each of the third through sixth lens elements has refractive power and an object-side surface and an image-side surface being both aspheric. The photographing optical lens assembly has a total of six lens elements with refractive power.
Claims30
A photographing optical lens assembly comprising six lens elements, the six 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 and a sixth lens element;
- wherein each of the six lens elements has an object-side surface towards the object side and an image-side surface towards the image side;
- wherein each of the third lens element, the fourth lens element, the fifth lens element and the sixth lens element has at least one surface being aspheric;
- wherein the first lens element has positive refractive power, the third lens element has negative refractive power, and the sixth lens element has negative refractive power;
- wherein a refractive index of the first lens element is N1, a refractive index of the second lens element is N2, a refractive index of the third lens element is N3, a refractive index of the fourth lens element is N4, a refractive index of the fifth lens element is N5, a refractive index of the sixth lens element is N6, a maximum of N1, N2, N3, N4, N5 and N6 is Nmax, a focal length of the photographing optical lens assembly is f, a maximum image height of the photographing optical lens assembly is ImgH, an Abbe number of the fifth lens element is V5, a half of a maximal field of view of the photographing optical lens assembly is HFOV, and the following conditions are satisfied:
- Nmax<1.70;
- 2.0<f/ImgH<5.0;
- V5<30;
- and
- 7.5 degrees<HFOV<23.5 degrees.
A photographing optical lens assembly comprising six lens elements, the six 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 and a sixth lens element;
- wherein each of the six lens elements has an object-side surface towards the object side and an image-side surface towards the image side;
- wherein there is an air space between every two lens elements of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element that are adjacent to each other;
- wherein each of the third lens element, the fourth lens element, the fifth lens element and the sixth lens element has at least one surface being aspheric;
- wherein the first lens element has positive refractive power, the third lens element has negative refractive power, and the sixth lens element has negative refractive power;
- wherein a refractive index of the first lens element is N1, a refractive index of the second lens element is N2, a refractive index of the third lens element is N3, a refractive index of the fourth lens element is N4, a refractive index of the fifth lens element is N5, a refractive index of the sixth lens element is N6, a maximum of N1, N2, N3, N4, N5 and N6 is Nmax, a focal length of the photographing optical lens assembly is f, a maximum image height of the photographing optical lens assembly is ImgH, a curvature radius of the object-side surface of the fourth lens element is R7, a curvature radius of the image-side surface of the fourth lens element is R8, and the following conditions are satisfied:
- Nmax<1.70;
- 2.0<f/ImgH<5.0;
- and
- −0.3<(R7−R8)/(R7+R8)<0.6.
A photographing optical lens assembly comprising six lens elements, the six 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 and a sixth lens element;
- wherein each of the six lens elements has an object-side surface towards the object side and an image-side surface towards the image side;
- wherein each of the third lens element, the fourth lens element, the fifth lens element and the sixth lens element has at least one surface being aspheric;
- wherein the third lens element with negative refractive power has the image-side surface being concave in a paraxial region thereof, and the fifth lens element has the object-side surface being concave in a paraxial region thereof;
- wherein a refractive index of the first lens element is N1, a refractive index of the second lens element is N2, a refractive index of the third lens element is N3, a refractive index of the fourth lens element is N4, a refractive index of the fifth lens element is N5, a refractive index of the sixth lens element is N6, a maximum of N1, N2, N3, N4, N5 and N6 is Nmax, an entrance pupil diameter of the photographing optical lens assembly is EPD, a maximum image height of the photographing optical lens assembly is ImgH, an Abbe number of the fifth lens element is V5, and the following conditions are satisfied:
- 1.639≤Nmax<1.70;
- 0.8<EPD/ImgH<2.0;
- and
- V5≤23.8.
Dependencies are inferred from the claim text.