Portable electronic device and optical imaging lens thereof

Abstract

The invention relates to a portable electronic device and an optical imaging lens thereof. The optical imaging lens sequentially comprises four lenses from an object side to an image side, wherein the center thickness T1 of the first lens on an optical axis and an air interval G12 between the first lens and the second lens on the optical axis are controlled to fulfill that T1 / G12 is more than or equal to 5. The portable electronic device comprises a frame and an imaging module arranged in the frame, wherein the imaging module comprises an optical imaging lens, a lens cone, a module rear seat unit and an image sensor. According to the portable electronic device and the optical imaging lens thereof, the total length of the system can be shortened under a condition that the excellent optical performance and the system performance can be maintained by controlling the concave and convex curve arrangement, the relevance of the ratio of phototropism and opticity and / or parameter and other characteristics of each lens.

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 four-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 Nos. 7274518, 7453654, 8184383, Taiwan ...

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Problems solved by technology

[0004] According to U.S. Patent Nos. 7920340, 7777972 and Taiwan Patent Publication Nos. 200815785, 2011058089, and 201116847, the disclosed optical imaging lenses are all four-piece lens structures, and the total air gap between the lenses is designed too large

Among them, for example, the length of the lens in Taiwan Patent Publication No. 201116847 is as long as 7mm, which is not conducive to the thin design of portable electronic products such as mobile phones and digital cameras.

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