Optical lenses and imaging equipment

Abstract

The invention provides an optical lens and an imaging apparatus. The optical lens sequentially comprises, from an object side to an image side, a first lens which is a crescent lens with negative focal power and is a glass aspherical lens, and of which the object side surface is a convex surface and the image side surface is a concave surface; a second lens which is provided with negative focal power, and of which the image side surface is a concave surface; a third lens which is provided with positive focal power, and of which the image side surface is convex; a fourth lens; a fifth lens glued with the fourth lens; and a sixth lens which is provided with positive focal power. According to the optical lens and the imaging apparatus, high resolution can be obtained while the miniaturizationof the optical lens is retained.

Description

technical field [0001] The invention relates to the field of optical lens and imaging equipment, in particular to the optical lens and imaging equipment capable of obtaining high resolution while keeping the lens miniaturized. Background technique [0002] Imaging devices such as camera-mounted mobile devices and digital still cameras using, for example, charge-coupled devices (CCD) and complementary metal-oxide semiconductors (CMOS) as solid-state imaging elements are well known. [0003] With the development of science and technology, the resolution requirements of optical lenses are getting higher and higher, from the original megapixels to the direction of tens of millions of pixels, and high-pixel lenses are becoming more and more popular. [0004] In addition, with the popularization of mobile devices, more and more small-sized imaging devices need to be applied, for example, imaging devices applied to mobile phones have very high requirements for small sizes. [0005...

AI Technical Summary

Problems solved by technology

[0007] Under normal circumstances, in order to meet the needs of miniaturization of optical lenses, the solution of compressing the total optical length of the lens is usually adopted, but the resolution will be significantly affected

At the same time, the imaging quality can also be improved by increasing the use of aspheric lenses, but the cost of glass aspheric lenses is relatively high, and excessive use of plastic aspheric lenses will lead to a decrease in the temperature performance of the lens

[0008] In particular, for cameras that work in outdoor environments such as surveillance cameras or vehicle cameras, on the one hand, the working environment is changeable, and it is necessary to maintain perfect resolution no matter whether it is hot or cold, rainy or snowy. On the other hand, its installation space is limited

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