Optical image capturing system
AssigneeAbility Opto-Electronics Technology Co., Ltd.
InventorsYEONG-MING CHANG, Chien-Hsun Lai, Yao-Wei Liu
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, and a fifth lens. At least one lens among the first to the fifth lenses has positive refractive force. The fifth 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 fifth 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;
- and
- an image plane specifically for infrared light;
- wherein the optical image capturing system has a total of the five lenses with refractive power;
- at least one lens among the first to the fifth lenses has positive refractive power;
- each lens among the first lens to the fifth 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:
- 0.5≤f/HEP≤1.8;
- 0 deg<HAF≤50 deg;
- and
- 0.5≤SETP/STP<1;
- wherein f is a focal length of the optical image capturing system;
- HEP is an entrance pupil diameter of the optical image capturing system;
- HAF is a half of a maximum view angle of the optical image capturing system;
- ETP1, ETP2, ETP3, ETP4, and ETP5 are respectively a thickness of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens at a height of half of the entrance pupil diameter away from the optical axis;
- SETP is a sum of the aforementioned ETP1 to ETP5;
- TP1, TP2, TP3, TP4, and TP5 are respectively a thickness of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens on the optical axis;
- STP is a sum of the aforementioned TP1 to TP5.
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;
- and
- an image plane specifically for infrared light;
- wherein the optical image capturing system has a total of the five lenses with refractive power;
- at least one surface of at least one lens among the first lens to the fifth lens has at least an inflection point;
- each lens among the first lens to the fifth 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:
- 0.5≤f/HEP≤1.5;
- 0 deg<HAF≤50 deg;
- and
- 0.2≤EIN/ETL<1;
- wherein f is a focal length of the optical image capturing system;
- HEP is an entrance pupil diameter of the optical image capturing system;
- HAF is a half of a maximum view 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 half of the entrance pupil diameter away from the optical axis 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 half of the entrance pupil diameter away from the optical axis on the object-side surface of the first lens and a coordinate point at a height of half of the entrance pupil diameter away from the optical axis on the image-side surface of the fifth lens.
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;
- and
- an image plane specifically for infrared light;
- wherein the optical image capturing system has a total of the five lenses having refractive power;
- at least one surface of at least two lenses among the first lens to the fifth lens has at least an inflection point;
- each lens among the first lens to the fifth 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:
- 0.5≤f/HEP≤1.3;
- 10 deg≤HAF≤50 deg;
- and
- 0.2≤EIN/ETL<1;
- wherein f is a focal length of the optical image capturing system;
- HEP is an entrance pupil diameter of the optical image capturing system;
- HAF is a half of a maximum view 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 half of the entrance pupil diameter away from the optical axis 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 half of the entrance pupil diameter away from the optical axis on the object-side surface of the first lens and a coordinate point at a height of half of the entrance pupil diameter away from the optical axis on the image-side surface of the fifth lens.
Dependencies are inferred from the claim text.