An optical lens assembly

Abstract

The invention relates to an optical lens assembly used for a mobile communication tool which is a front-lighting high-definition camera module with the specification being 13 million pixels and 1 / 3.2 inches. The optical lens assembly comprises a fixed diaphragm, a lens set and a glass optical filter, wherein the lens set comprises the fixed diaphragm, a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged on the same optical axis in the direction of an object, and the lenses are matched so that the height of each lens can be effectively controlled. Meanwhile, light is refracted through a high-order curved surface by adopting aspherical lenses, it can be guaranteed that light can be accurately focused to a point, various aberrations of the light can be effectively eliminated, and high imaging quality of the lenses is guaranteed. It is controlled that the height of each lens is 4.5 mm, the field angle is greater than 75 degrees, and the F / NO is less than 2.0; by adopting the plastic lenses, the weight and height of each lens are reduced, manufacturing cost is lowered, and production efficiency is improved.

Description

technical field [0001] The invention relates to the field of optical devices, in particular to an optical lens assembly of a front-illuminated high-definition 13 million pixel 1 / 3.2-inch camera module used in the field of communication electronic products. Background technique [0002] Recently, various domestic manufacturers have made efforts to launch their own high-quality flagship mobile phones, and at the same time allow manufacturers to get a share of the fierce competition. Since the beginning of 2013, from the smartphone processor to the display screen, to the camera, and even to the related accessories of the mobile phone, there has been a rapidly escalating competition. Since the current flagship mobile phones of various brands have similar configurations, finding product differentiation has become a brain-struggling task. In some recent new mobile phone products, we seem to find that manufacturers pay special attention to the front camera of mobile phones. In th...

AI Technical Summary

Problems solved by technology

However, the existing technology such as the lens of Chinese Patent No. 200710027865 has problems such as optical total growth, complex structure, large volume, difficult processing, high cost, difficult mass production, and low pixels, and the prior art Chinese Patent No. 201120198295 The defects of large number of lenses and high manufacturing cost are not suitable for the current requirements of mobile phone front cameras with simple structure, small size, small total optical length, high-quality pixels and mass production requirements; 201110307278 lens is large in size and limited in field of view , it is not easy to use and operate, and it is difficult to meet higher requirements

Therefore, in order to meet the needs of a wider range of consumers, on the premise of increasing the camera pixel and reducing its production cost, it is necessary to develop and design a new lens to solve the overall optical growth and complex structure of the lens with Chinese patent number 200710027865 , large volume, difficult processing, high cost, difficult mass production, low pixels, etc., and the Chinese patent number 201120198295 has a large number of heads and high manufacturing costs, and the 201110307278 lens is large in size and limited in field of view. inconvenient defect

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