Imaging optical lens group

Abstract

The invention discloses an imaging optical lens group. From an objective side to an image side, the imaging optical lens group sequentially comprises a first lens with positive refraction force, a second lens with negative refraction force, a third lens with the positive refraction force, a fourth lens with the negative refraction force and a fifth lens, wherein the surface of the objective side of the first lens is a convex surface; the surface of the objective side of the second lens is the convex surface, and the surface of the image side of the second lens is a concave surface; the surface of the objective side of the third lens is the concave surface, and the surface of the image side of the third lens is the convex surface; the surface of the image side of the fourth lens is the concave surface, and the surfaces of the objective side and the image side of the fourth lens are aspheric surfaces; the surface of the image side of the fifth lens is the concave surface, and the surfaces of the objective side and the image side of the fifth lens are the aspheric surfaces; and the imaging optical lens group also comprises a diaphragm which is arranged between a shot object and the second lens. In a lens group configuration mode, the size of the lens group can be effectively reduced, the sensitivity of an optical system is reduced, and high resolution can be obtained.

Description

[0001] This application is a divisional application of a patent application with an application date of July 9, 2010, an application number of 201010225252.6, and an invention title of "Imaging Optical Lens Group". technical field

[0002] The invention relates to an imaging optical lens set, in particular to a miniaturized imaging optical lens set applied to portable electronic products. Background technique

[0003] In recent years, with the rise of portable electronic products with photographic functions, the demand for miniaturized photographic lenses has increased day by day. The photosensitive element of a general photographic lens is nothing more than a photosensitive coupled device (Charge Coupled Device, CCD) or a complementary metal oxide semiconductor element (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor). Moreover, due to improvements in manufacturing technology, the pixel size of the photosensitive element is reduced, and the miniaturized photogra...

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