Five-patch type optical imaging lens and electronic device using same

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 in sequence from an object side to an image side. The first lens is a lens with a positive refractive index. The second lens is a lens with a negative refractive index. The object side face is provided with a concave face portion located in an area close to an optical axis. The image side face is provided with a concave face portion located in an area close to the optical axis. The object side face of the third lens is provided with a concave face portion located in the area close to the circumference. The image side face of the fourth lens is provided with a convex face portion located in the area close to the optical axis. The object side face of the fifth lens is provided with a concave face portion located in an area close to the optical axis. A portable electronic device comprises a machine shell and an image module arranged in the machine shell, and the image module comprises the optical imaging lens, a lens cone, a module base unit and an image sensor. The optical imaging lens and the electronic device can enable the lens to still have good optical performance under the condition that the length of the lens is reduced.

Description

technical field [0001] The invention relates to an optical lens, in particular to a five-piece 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 US Patent Publication Nos. 20110176049, 20110316969, and US Patent Pub...

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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, and 201241499 are five-piece lens structures, and each The overall design of the air gap between

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

[0007] The imaging lenses disclosed in the above-mentioned patents have a long lens length, which does not meet the needs of the miniaturization of mobile phones.

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