Optical imaging lens and electronic device applying optical imaging lens

Abstract

The invention relates to an optical imaging lens and an electronic device applying the optical imaging lens. The optical imaging lens sequentially comprises a first lens, a second lens, a third lens and a fourth lens from the object side to the image side along an optical axis. The image side face of the first lens is provided with a convex face portion at the area nearby the circumference of the first lens. The object side face of the second lens is provided with a concave face portion at the area nearby the circumference of the second lens. The third lens has a positive refractive index, and the image side face of the third lens is provided with a concave face portion at the area nearby the circumference of the third lens. The fourth lens is made of plastic materials, and the object side face of the fourth lens is provided with a concave face portion at the area nearby the optical axis and provided with a convex face portion at the area nearby the circumference of the fourth lens. The four lenses have refractive indexes. The electronic device comprises a shell, a lens cone, a module rear base unit and an image sensor. The optical imaging lens has the good optical performance with the shortened length.

Description

technical field [0001] The invention relates to an optical lens, in particular to an optical imaging lens and an electronic device using the optical imaging lens. Background technique [0002] In recent years, the popularization of portable electronic products such as mobile phones and digital cameras has led to the vigorous development of photography module related technologies. The photography module mainly includes components such as optical imaging lens, module holder unit and sensor. The thin and light trend of digital cameras also makes the demand for miniaturization of photographic modules higher and higher. For the technological progress and size reduction of CMOS), the length of the optical imaging lens loaded in the camera module also needs to be shortened accordingly. performance. [0003] US Patent Publication Nos. US7848032, US8284502, US8179616, and Taiwan Patent Publication No. TW201109712 all disclose an optical lens composed of four lenses, and the length ...

AI Technical Summary

Problems solved by technology

Among them, the lens length of US Patent No. US8179616 is more than 11mm, which is not conducive to the thin design of portable electronic products such as mobile phones and digital cameras.

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