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US 9,958,649 B2Granted
Optical image capturing system
AssigneeAbility Opto-Electronics Technology Co., Ltd.
InventorsChien-Hsun Lai, Nai-Yuan Tang, Yeong-Ming Chang
Life of this patent
Estimating the term…
Abstract
An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. At least one lens among the first to the sixth lenses has positive refractive force. The seventh lens has negative refractive force, wherein both surfaces thereof can be aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the seventh lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.
Claims25
An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:
- a first lens having refractive power;
- a second lens having refractive power;
- a third lens having refractive power;
- a fourth lens having refractive power;
- a fifth lens having refractive power;
- a sixth lens having refractive power;
- a seventh lens having refractive power;
- and
- an image plane;
- wherein the optical image capturing system consists of the seven lenses with refractive power;
- at least one surface of each of at least two lenses among the first lens to the seventh lens has at least an inflection point thereon;
- at least one lens among the first to the seventh lenses has positive refractive power;
- each lens of the first to the seventh lenses has an object-side surface, which faces the object side, and an image-side surface, which faces the image side;
- wherein the optical image capturing system satisfies:
- 1≤f/HEP≤10;
- 0.5≤HOS/f≤25;
- 0.5≤HOS/HOI≤1.6;
- and
- 0.5≤SETP/STP<1;
- where f1, f2 f3, f4, f5, f6, and f7 are focal lengths of the first lens to the seventh lens, respectively;
- f is a focal length of the optical image capturing system;
- HEP is an entrance pupil diameter of the optical image capturing system;
- HOS is a distance between the object-side surface of the first lens and the image plane on the optical axis;
- HOI is a maximum height for image formation perpendicular to the optical axis on the image plane;
- InTL is a distance from the object-side surface of the first lens to the image-side surface of the seventh lens;
- HAF is a half of a maximum field angle of the optical image capturing system;
- ETP1, ETP2, ETP3, ETP4, ETP5, ETP6, and ETP7 are respectively a thickness at the height of ½ HEP of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens;
- SETP is a sum of the aforementioned ETP1 to ETP7;
- TP1, TP2, TP3, TP4, TP5, TP6, and TP7 are respectively a thickness of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens on the optical axis;
- STP is a sum of the aforementioned TP1 to TP7.
27 more elements
An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:
- a first lens having refractive power;
- a second lens having refractive power;
- a third lens having refractive power;
- a fourth lens having refractive power;
- a fifth lens having refractive power;
- a sixth lens having refractive power;
- a seventh lens having refractive power;
- and
- an image plane;
- wherein the optical image capturing system consists of the seven lenses with refractive power;
- at least one surface of each of at least three lenses among the first lens to the seventh lens has at least an inflection point thereon;
- at least one lens among the first lens to the third lens has positive refractive power, at least one lens among the fourth lens to the seventh lens has positive refractive power;
- each lens among the first to the seventh lenses has an object-side surface, which faces the object side, and an image-side surface, which faces the image side;
- wherein the optical image capturing system satisfies:
- 1≤f/HEP≤10;
- 0.5≤HOS/f≤25;
- 0.5≤HOS/HOI≤1.8;
- and
- 0.2≤EIN/ETL<1;
- where f1, f2 f3, f4, f5, f6, and f7 are focal lengths of the first lens to the seventh lens, respectively;
- f is a focal length of the optical image capturing system;
- HEP is an entrance pupil diameter of the optical image capturing system;
- HOS is a distance between the object-side surface of the first lens and the image plane on the optical axis;
- HOI is a maximum height for image formation perpendicular to the optical axis on the image plane;
- InTL is a distance from the object-side surface of the first lens to the image-side surface of the seventh lens;
- HAF is a half of the maximum field angle of the optical image capturing system;
- ETL is a distance in parallel with the optical axis between a coordinate point at a height of ½ HEP on the object-side surface of the first lens and the image plane;
- EIN is a distance in parallel with the optical axis between the coordinate point at the height of ½ HEP on the object-side surface of the first lens and a coordinate point at a height of ½ HEP on the image-side surface of the seventh lens.
25 more elements
An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:
- a first lens having refractive power,
- a second lens having refractive power;
- a third lens having refractive power,
- a fourth lens having refractive power;
- a fifth lens having refractive power;
- a sixth lens having refractive power;
- a seventh lens having refractive power;
- and
- an image plane;
- wherein the optical image capturing system consists of the seven lenses having refractive power;
- at least one lens among the first lens to the third lens has positive refractive power;
- at least one lens among the fourth lens to the seventh lens has positive refractive power;
- at least one surface of each of at least three lenses among the first lens to the seventh lens has at least an inflection point thereon;
- each lens of the first to the seventh lenses has an object-side surface, which faces the object side, and an image-side surface, which faces the image side;
- wherein the optical image capturing system satisfies:
- 1≤f/HEP≤10;
- 0.5≤HOS/f≤5;
- 0.5≤HOS/HOI≤1.8;
- and
- 0.2≤EIN/ETL<1;
- where f1, f2, f3, f4, f5, f6, and f7 are focal lengths of the first lens to the seventh lens, respectively;
- f is a focal length of the optical image capturing system;
- HEP is an entrance pupil diameter of the optical image capturing system;
- HOS is a distance between the object-side surface of the first lens and the image plane on the optical axis;
- HOI is a maximum height for image formation perpendicular to the optical axis on the image plane;
- InTL is a distance from the object-side surface of the first lens to the image-side surface of the sixth lens on the optical axis;
- HAF is a half of a maximum field angle of the optical image capturing system;
- ETL is a distance in parallel with the optical axis between a coordinate point at a height of ½ HEP on the object-side surface of the first lens and the image plane;
- EIN is a distance in parallel with the optical axis between the coordinate point at the height of ½ HEP on the object-side surface of the first lens and a coordinate point at a height of ½ HEP on the image-side surface of the seventh lens.
26 more elements
Dependencies are inferred from the claim text.