Portable electronic device and its optical imaging lens
An optical imaging lens and lens technology, which is applied in optics, optical components, installation, etc., can solve the problems of unfavorable thin design of portable electronic products and excessive lens length design, and achieve good optical performance and shorten the lens length.
Active Publication Date: 2016-09-28
GENIUS ELECTRONICS OPTICAL XIAMEN
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[0003] U.S. Patent Publication No. 7277238, U.S. Patent Publication No. 20120281299, and International Publication No. WO2009 / 122897 all have a four-piece lens structure, and the length of each lens is too large, which is not conducive to the thinness of portable electronic products such as mobile phones and digital cameras. Therefore, it is extremely necessary to develop a four-piece optical imaging lens with good imaging quality and short lens length
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[0104] In order to further illustrate various embodiments, the present invention provides description drawings. The accompanying drawings in this specification are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.
[0105] The term “a lens has positive refractive power (or negative refractive power)” mentioned in this specification means that the lens has positive refractive power (or negative refractive power) in the area near the optical axis. "The object side (or image side) of a lens includes a convex surface (or concave...
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The invention relates to a portable electronic device and its optical imaging lens. An optical imaging lens of the present invention sequentially includes a first lens, a second lens, a third lens and a fourth lens from the object side to the image side. The optical imaging lens also satisfies the conditional formula (1) of 5.20≦ALT / AC23; AC23 is the width of the air gap on the optical axis between the second lens and the third lens, and ALT is the width of the air gap between the first lens and the fourth lens on the optical axis The sum of the thicknesses of the four lenses above. A portable electronic device includes a casing and an image module installed in the casing, and the image module includes the above-mentioned optical imaging lens, a lens barrel and an image sensor. The present invention shortens the length of the lens under the condition of maintaining good optical performance by controlling the concave-convex surface arrangement of each lens, the refractive index and / or the characteristic of the conditional expression between parameters.
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] U.S. Patent Publication No. 7277238, U.S. Patent Publication No....
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IPC IPC(8): G02B13/18G02B7/02G03B30/00
CPCG02B13/004G02B9/34H04N23/51H04N23/57
Inventor 何婉婷陈锋黄关宁
Owner GENIUS ELECTRONICS OPTICAL XIAMEN