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US 10,895,716 B2Granted
Electronic device
AssigneeLargan Precision Co., Ltd.
InventorTzu-Chieh Kuo
Life of this patent
Estimating the term…
Abstract
An electronic device includes an optical system. The optical system includes six lens elements, and the six lens elements are, in order from an outer side to an inner 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. Each of the six lens elements has an outer-side surface facing toward the outer side and an inner-side surface facing toward the inner side. Each of at least three lens surfaces of the six lens elements is aspheric and has at least one inflection point.
Claims26
An electronic device comprising:
- an optical system comprising six lens elements, the six lens elements being, in order from an outer side to an inner 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;
- each of the six lens elements having an outer-side surface facing toward the outer side and an inner-side surface facing toward the inner side, wherein each of at least three lens surfaces of the six lens elements is aspheric and has at least one inflection point, and each of at least five lens elements of the six lens elements has an Abbe number smaller than 33.0;
- wherein half of a maximum field of view of the optical system is HFOV, a focal length of the second lens element is f2, a curvature radius of the outer-side surface of the second lens element is R3, an axial distance between the second lens element and the third lens element is T23, a central thickness of the third lens element is CT3, an axial distance between the outer-side surface of the first lens element and an inner-side conjugate surface of the optical system is TL, a maximum effective radius of the inner-side conjugate surface of the optical system is YI, a sum of axial distances between each of all adjacent lens elements of the six lens elements of the optical system is ΣAT, a sum of central thicknesses of the six lens elements of the optical system is ΣCT, and the following conditions are satisfied:
- 0[deg.]<HFOV<120.0[deg.];
- −5.0<log10(|f2/R3|)<3.6;
- 0<T23/CT3<2.00;
- 0.9<TL/YI<6.0;
- and
- 0.34≤ΣAT/ΣCT<1.40.
6 more elements
An electronic device comprising:
- an optical system comprising six lens elements, the six lens elements being, in order from an outer side to an inner 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;
- each of the six lens elements having an outer-side surface facing toward the outer side and an inner-side surface facing toward the inner side, wherein the inner-side surface of the sixth lens element is concave in a paraxial region thereof, the inner-side surface of the sixth lens element is aspheric and has at least one inflection point, the outer-side surfaces and the inner-side surfaces of at least three lens elements of the six lens elements are aspheric, and each of at least four consecutive lens elements of the six lens elements adjacently arranged has an Abbe number smaller than 35.0;
- wherein half of a maximum field of view of the optical system is HFOV, a central thickness of the first lens element is CT1, a central thickness of the second lens element is CT2, a central thickness of the third lens element is CT3, a central thickness of the fourth lens element is CT4, a central thickness of the fifth lens element is CT5, a central thickness of the sixth lens element is CT6, an f-number of the optical system is Fno, an axial distance between the outer-side surface of the first lens element and an inner-side conjugate surface of the optical system is TL, a focal length of the optical system is f, and the following conditions are satisfied:
- 5.0[deg.]<HFOV<30.0[deg.];
- 0<(CT2+CT4+CT5)/(CT1+CT3+CT6)<0.95;
- 1.8<Fno<5.0;
- and
- 0.50<TL/f<1.00.
5 more elements
An electronic device comprising:
- an optical system comprising six lens elements, the six lens elements being, in order from an outer side to an inner 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;
- each of the six lens elements having an outer-side surface facing toward the outer side and an inner-side surface facing toward the inner side, wherein the inner-side surface of the sixth lens element is concave in a paraxial region thereof, the inner-side surface of the sixth lens element is aspheric and has at least one inflection point, and each of at least five lens elements of the six lens elements has an Abbe number smaller than 35.0;
- wherein half of a maximum field of view of the optical system is HFOV, and the following condition is satisfied:
- 38.0[deg.]<HFOV<120.0[deg.].
1 more element
Dependencies are inferred from the claim text.