A high-pixel ultra-thin mobile phone lens

Abstract

The invention relates to a high-pixel ultrathin mobile-phone lens. The lens comprises a first positive lens of a first refractive index, a second negative lens of a second refractive index, a third positive lens of a third refractive index, a fourth positive lens of a fourth refractive index and a fifth negative lens of a fifth refractive index arranged successively front the object end to the image end along the optical axis of an imaging lens; the first, third, fourth and fifth refractive indexes are lower than the second refractive index; the first refractive index is the same with the fourth refractive index; and the third refractive index is the same with the fifth refractive index. According to the high-pixel ultrathin mobile-phone lens, the tolerance resistance of the mobile-phone lens can be improved effectively, different types of aberrations can be reduced effectively, the imaging quality is improved, and the mobile-phone lens is light and thin, does not need an aspheric surface and is easy to manufacture.

Description

technical field [0001] The invention relates to an imaging lens, in particular to a high-pixel ultra-thin mobile phone lens. Background technique [0002] With the continuous upgrading of modern smart phones, people's requirements for the mobile phone lenses equipped with them are also increasing, and mobile phone lenses with high resolution, low aberration, and small size are more favored by consumers. For mobile phone lens manufacturers, tolerance-resistant and easy-to-process lenses are easier to produce in large quantities. In recent years, a batch of relatively good mobile phone lens designs have emerged, but there are still some defects, a few examples are as follows: [0003] 1. The application number of Korean LG Innotek company is 201310052644.0, and the application date is February 18, 2013. The Chinese invention patent application has disclosed (public date is 2013-08-21) an imaging lens, the imaging lens TTL Too long, the total length of the lens is too thick; ...

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Problems solved by technology

[0003] 1. The application number of Korean LG Innotek company is 201310052644.0, and the application date is February 18, 2013. The Chinese invention patent application has disclosed (public date is 2013-08-21) an imaging lens, the imaging lens TTL Too long, the total length of the lens is too thick;

[0004] 2. The application number of China Taiwan Jialing Technology Co., Ltd. is 201410335021.9, and the application date is July 15, 2014. The Chinese invention patent application has disclosed (the publication date is 2016-02-10) a kind of imaging optical imaging lens, It uses 1G4P to achieve wide angle, in which at least one side of the fourth glass lens is an aspheric surface, so the manufacturing cost of the lens is high;

[0005] 3. The application number applied by Sony Corporation of Japan is 201210451249.5, and the application date is November 12, 2012. The Chinese invention patent application has disclosed (the publication date is 2013-05-29) an imaging lens and imaging equipment. The imaging lens of this patent The field of view is only about 75 degrees, which is too small;

[0006] 4. The application number of Largan Optoelectronics Co., Ltd. is 201410481763.2, and the application date is September 19, 2014. The Chinese invention patent application has disclosed (the publication date is 2016-02-17) a photographic optical lens group, an imaging device and For electronic devices, the focal length of the lens is too large, the TTL of the lens is too long, and the field of view is also lower than 80 degrees. In addition, the light rays passing through the third lens 130 and the fifth lens 150 have obvious deflection, and the tolerance is sensitive. Production is not conducive to lens assembly, not conducive to processing and manufacturing

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