Portable electronic device and optical imaging lens of portable electronic device

Abstract

The invention relates to an optical imaging lens. The optical imaging lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens, wherein the first lens, the second lens, the third lens, the fourth lens and the fifth lens are arranged in sequence from the object side to the image side. The first lens has a positive refractive index. The second lens has a negative refractive index, wherein the object side face of the second lens is provided with a convex part located in the area nearby an optical axis, and the image side face of the second lens is provided with a concave part located in the area nearby the circumference. The object side face of the third lens is provided with a concave part located in the area nearby the circumference, and the image side face of the third lens is provided with a convex part located in the area nearby the optical axis. The object side face of the fourth lens is a concave surface. The image side face of the fifth lens comprises a concave part located in the area nearby the optical axis and a convex part located in the area nearby the circumference. The invention further provides a portable electronic device which comprises an enclosure and an image module installed in the enclosure, wherein the image module comprises the optical imaging lens, a lens cone, a module pedestal unit, a substrate and an image sensor. According to the portable electronic device and the optical imaging lens of the portable electronic device, the lens still can have good optical performance under the condition of length contraction.

Description

technical field [0001] The present invention is related to a portable electronic device and its optical imaging lens, and especially related to a portable electronic device using a five-piece lens and its optical imaging lens. Background technique [0002] In recent years, the popularization of mobile phones and digital cameras has led to the vigorous development of photographic modules including optical imaging lenses, lens barrels, and image sensors. The thinner and lighter mobile phones and digital cameras have also increased the demand for miniaturization of photographic modules. With the technological progress and size reduction of Charge Coupled Device (CCD) or Complementary Metal-Oxide Semiconductor (CMOS), the optical imaging lens installed in the camera module also needs to be reduced in size. But the good optical performance of the optical imaging lens is also necessary to take into account. [0003] According to U.S. Patent Publication Nos. 20110176049, 201103169...

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Problems solved by technology

[0005] U.S. Patent Publication Nos. 20120069455, 20120087019, 20120087020, Japanese Patent Publication Nos. 2010-224521, 2010-152042, 2010-026434, and Taiwan Patent Publication Nos. 201215942, 201213926, 201241499. The optical imaging lenses are five-piece lens structures , the total design of the air gap between the lenses is too large

[0006] Among them, the length of the optical imaging lens of Japanese Patent Publication No. 2008-281760 is more than 16mm, which is not conducive to the thin design of portable electronic products such as mobile phones and digital cameras.

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