Optical Lenses and Imaging Equipment

Abstract

The present invention provides an optical lens and an imaging device. The optical lens sequentially includes from the object side to the image side: a first lens, which is a meniscus lens with negative refractive power, the object side of the first lens is convex, and the image side is concave; the second lens, with negative light power, the image side of the second lens is concave; the third lens is a biconvex lens with positive refractive power, the object side of the third lens is convex, the image side is convex, and the radius of the object side is the same as the image side The absolute value of the ratio of the radii of the side surfaces is greater than or equal to 18; the fourth lens; the fifth lens, cemented with the fourth lens; and, the sixth lens, having positive refractive power. With the optical lens and the imaging apparatus according to the present invention, it is possible to obtain high resolution while maintaining the miniaturization of the optical lens.

Description

technical field [0001] The present invention relates to the field of optical lenses and imaging devices, in particular to optical lenses and imaging devices capable of obtaining high resolution while maintaining the miniaturization of the lenses. Background technique [0002] Imaging devices, such as camera-mounted mobile devices and digital still cameras, use, for example, charge coupled devices (CCDs) and complementary metal oxide semiconductors (CMOS) as solid-state imaging elements, and such imaging devices 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 v...

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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