Importance

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Abstract

The invention discloses a four-piece optical lens for capturing image. In order from an object side to an image side, the optical lens along the optical axis comprises a first lens with positive refractive power, wherein an object-side surface thereof can be convex; a second lens with refractive power; a third lens with refractive power, wherein both surfaces of each of the aforementioned lenses can be aspheric; and a fourth lens which can have negative refractive power, wherein an image-side surface thereof can be concave, and both surfaces thereof are aspheric; at least one surface of the fourth lens has an inflection point thereon whereby the optical lens can increase aperture value and improve the imaging quality for use in compact cameras.

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First Claim