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US 9,851,536 B2Granted
Optical image capturing system
AssigneeAbility Opto-Electronics Technology Co., Ltd.
InventorsNai-Yuan Tang, Yeong-Ming Chang
Life of this patent
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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 can have negative refractive force, wherein both surfaces thereof are 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 imagining 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;
- a maximum height for image formation perpendicular to the optical axis on the image plane is denoted as HOI;
- 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 lens to the seventh lens 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:
- 1.4≦f/HEP≦10.0;
- 0 deg<HAF≦150 deg;
- and
- 0.9≦2(ARE/HEP)≦1.5;
- 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 in parallel with the optical axis from the object-side surface of the first lens to 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 on the optical axis;
- for any surface of any lens, HAF is a half of a view angle of the optical image capturing system, ARE is a profile curve length measured from a start point where the optical axis passes therethrough, along a surface profile thereof, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis.
22 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 a surface of at least two lenses among the first lens to the seventh lens has at least an inflection point;
- 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 lens to the seventh lens 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:
- 1.4≦f/HEP≦10.0;
- 0<InTL/HOS<0.9;
- 0 deg<HAF≦150 deg;
- and
- 0.9≦2(ARE/HEP)≦1.5;
- 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 in parallel with the optical axis between the object-side surface of the first lens and 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 on the optical axis;
- for any surface of any lens, HAF is a half of a view angle of the optical image capturing system, ARE is a profile curve length measured from a start point where the optical axis passes therethrough, along a surface profile thereof, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis.
23 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 positive 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;
- a maximum height for image formation perpendicular to the optical axis on the image plane is denoted as HOI;
- at least a 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 among the first lens to the seventh lens 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:
- 1.4≦f/HEP≦10.0;
- 0<InTL/HOS<0.9;
- 0 deg<HAF≦150 deg;
- and
- 0.9≦2(ARE/HEP)≦1.5;
- 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 in parallel with the optical axis between an object-side surface, which face the object side, of the first lens and 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 on the optical axis;
- HAF is a half of a maximum field angle of the optical image capturing system;
- for any surface of any lens, ARE is a profile curve length measured from a start point where the optical axis passes therethrough, along a surface profile thereof, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis.
23 more elements
Dependencies are inferred from the claim text.