Combined lens system

Abstract

The compound lens system comprises: from the objective to image, a glass-made first lens, a plastic-made second / third / fourth lens. Wherein, the first and third lenses have positive focus, other lenses have negative focus; all of four lenses have aspheric surface structure. This invention has well physical performance and well imaging feature fit to be used on mobile phone.

Description

【Technical field】 [0001] The invention relates to a compound lens system, in particular to a compound lens system applicable to mobile phones. 【Background technique】 [0002] Traditional digital camera lenses can be divided into three categories: glass lenses, plastic lenses, and hybrid lenses. [0003] When applying digital camera lenses to mobile phones, it is difficult to meet the requirements of light weight and low cost due to the heavy weight and high cost of all-glass lenses. Although the all-plastic lens has the advantages of light weight and low cost, it is easily affected by the external environment, and the plastic lens in contact with the outside has poor performance in temperature resistance and scratch resistance. [0004] In the traditional glass-plastic hybrid lens, the arrangement positions of the glass lens and the plastic lens are different. In one of the glass-plastic hybrid lenses, according to the order from the object space to the image space, it inc...

AI Technical Summary

Problems solved by technology

Although this lens can basically meet the requirements of imaging, but its resolution is low, it is difficult to meet the requirements of high-resolution lenses

Images