| 摘要 |
The present disclosure discloses an optical image capturing system. The optical image capturing system includes a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens with refractive power, a sixth lens with refractive power and a seventh lens with refractive power sequentially arranged from an object side to an image side along the optical axis. At least one of the first through sixth lens has positive refractive power. The seventh lens may have negative refractive power and both image side and object side surfaces of the seventh lens are aspheric. The optical image capturing system can increase aperture value and improve the imagining quality for the application of compact cameras. |
| 主权项 |
1. An optical image capturing system, from an object side to an image side, sequentially comprising:
a first lens element with refractive power; a second lens element with refractive power; a third lens element with refractive power; a fourth lens element with refractive power; a fifth lens element with refractive power; a sixth lens element with refractive power; a seventh lens element with refractive power; and an image plane; wherein the optical image capturing system consists of the seven lens elements with refractive power, at least one of the first through seventh lens elements has positive refractive power, an object-side surface and an image-side surface of the seventh lens element are aspheric, focal lengths of the first through seventh lens elements are f1, f2, f3, f4, f5, f6 and f7 respectively, a focal length of the optical image capturing system is f, an entrance pupil diameter of the optical image capturing system is HEP, a distance from an object-side surface of the first lens element to the image plane is HOS, a distance on an optical axis from the object-side surface of the first lens element to the image-side surface of the seventh lens element is InTL, a sum of an absolute value of each distance in parallel with the optical axis from a maximum effective half diameter on an object-side surface of each of the seven lens elements to an axial point on the object-side surface of each of the seven lens elements is InRSO, a sum of an absolute value of each distance in parallel with the optical axis from a maximum effective half diameter on an image-side surface of each of the seven lens elements to an axial point on the image-side surface of each of the seven lens elements is InRSI, a sum of InRSO and InRSI is Σ|InRS|, and the following relations are satisfied: 1.2≦f/HEP≦6.0, 0.5≦HOS/f≦5.0, and 0≦Σ|InRS|/InTL≦5. |
