Optical imaging lens and electronic device using same

Abstract

The invention relates to an optical imaging lens and an electronic device using the optical imaging lens. From an object side to an image side, the optical imaging lens consists sequentially of an aperture, a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens is provided with a positive reflective index and the image side is provided with a convex surface portion. The second lens is provided with a negative reflective index, the object side is provided with a convex surface portion, and the image side is provided with a concave surface portion. The object side of the third lens is provided with a concave surface portion and the image side is provided with a convex surface portion. The object side of the fourth lens is provided with a concave surface portion and the image side is provided with a convex surface portion. The object side of the fifth lens is provided with a convex surface portion and the image side is provided with a concave surface portion and a convex surface portion. The electronic device includes a housing and an image module disposed in the housing. The image module comprises the optical imaging lens, a lens barrel, a module backstand unit and an image sensor. According to the invention, with shortened length, the lens can still have good optical properties.

Description

technical field [0001] The present invention relates to an optical lens, in particular to an optical imaging lens and an electronic device using the optical imaging 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 thin and lightweight cameras also increases the demand for the miniaturization of image modules. With the development of charge coupled device (CCD) or complementary metal-oxide semiconductor (CMOS) ) technology 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 degradation of the photographic effect and quality, it is still necessary to take into account good optical performance when shortening the len...

AI Technical Summary

Problems solved by technology

[0005] U.S. Patent Publication Nos. 20120069455, 20120087019, 20120087020, Japanese Patent Publication Nos. 2010-224521, 2010-152042, and 2010-026434 all have a five-piece lens structure, and the total design of the air gap between the lenses is too large

[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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