OPTICAL IMAGE CAPTURING SYSTEM

摘要

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.

主权项

1. 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 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 second lens to the seventh lens has positive refractive power; the seventh lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side, and the object-side surface and the image-side surface of the seventh lens are aspheric surfaces; wherein the optical image capturing system satisfies:
1.2≦f/HEP≦10.0;0