Optical imaging lens and electronic device using the lens

Abstract

The invention relates to an optical imaging lens and an electronic device using the lens. The lens sequentially includes a first lens, a second lens, a third lens, a fourth lens lens and a fifth lens lens from the object side to the image side. The image side of the first lens has a convex portion near the circumference. The object side of the second lens has a concave portion located near the circumference, and the image side has a convex portion located near the circumference. The object side surface of the third lens has a concave portion located near the circumference. The fourth lens is a lens with positive refractive power, and the object side of the fourth lens has a concave portion located near the optical axis. The material of the fifth lens is plastic. The electronic device includes a casing and an image module installed in the casing. The image module includes the above-mentioned optical imaging lens, a lens barrel, a module rear seat unit and an image sensor. The present invention still has good optical properties at shortened lengths.

Description

technical field [0001] The invention relates to an optical lens, in particular to an optical imaging lens and an electronic device using the lens. Background technique [0002] In recent years, the popularity of portable electronic products such as mobile phones and digital cameras has led to the vigorous development of technologies related to image modules (mainly including optical imaging lenses, module holder units, and sensors). The trend of thinner and lighter cameras also makes the miniaturization of image modules more and more demanding. ) technological progress and size reduction, the length of the optical imaging lens loaded in the image 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] According to U.S. Patent Publication Nos. 20120154929, 20100253829, and 20100254029, U.S. Pat...

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Problems solved by technology

[0004] Among them, US Patent Publication No. 20100254029 has a lens length of more than 10mm, which is not conducive to the thin design of portable electronic products such as mobile phones and digital cameras.

[0005] The imaging lenses disclosed in the above-mentioned patents have long lens lengths, which do not meet the needs of the miniaturization of mobile phones, so there is still room for improvement

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