Optical imaging lens and electronic device using the optical imaging lens

Abstract

The invention relates to an optical imaging lens and an electronic device using the optical imaging lens. The optical imaging lens of the present invention includes a first lens, a second lens, a third lens and a fourth lens in sequence along the optical axis from the object side to the image side, and the image side of the first lens has a convex surface in the vicinity of the circumference part, the object side of the second lens has a concave surface in the vicinity of the circumference, the third lens has a positive refractive power, and the image side has a convex surface in the vicinity of the circumference, and the fourth lens is plastic Material, and the side of the object has a concave surface in the vicinity of the optical axis and a convex surface in the vicinity of the circumference, and the above four lenses have refractive power. The electronic device of the present invention includes a casing and an image module installed in the casing, and the image module includes the above-mentioned optical imaging lens, lens barrel, module rear seat unit and image sensor. The invention enables the lens to still have good optical performance under 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 thinner and lighter trend of digital cameras has also increased the miniaturization requirements of photographic modules. ) technological progress and size reduction, the length of the optical imaging lens loaded in the camera module also needs to be shortened accordingly, but in order to avoid the decline of photographic effect and quality, good optical performance must still be taken into account when shortening the length of the optical imaging lens. [0003] US Patent Publication N...

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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