4K high-definition optical system

Abstract

The invention relates to the technical field of optical imaging systems, and in particular, relates to a 4K high-definition optical system which is sequentially provided with a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a first bonding lens, a second bonding lens, a third bonding lens, an IR optical filter and a photosensitive chip from the object side to the image side.The first bonding lens comprises a fifth lens and a sixth lens, the second bonding lens comprises a seventh lens and an eighth lens, and the third bonding lens comprises a ninth lens and a tenth lens.By adopting the structure, spherical aberration, coma aberration, astigmatism, field curvature and other aberrations of the system are well eliminated; an all-glass spherical structure is adopted, sothat the temperature stability is higher, and the phenomenon of temperature drift of the plastic lens is avoided. According to the invention, high image quality and a large field angle are realized,and the field angle reaches 71 degrees; the aperture is large, and the aperture number reaches F1.7; and the length is short, and the total optical length is 40 mm.

Description

technical field [0001] The invention relates to the technical field of optical imaging systems, in particular to a 4K high-definition optical system. Background technique [0002] An optical system refers to a system composed of various optical elements such as lenses, mirrors, prisms, and diaphragms in a certain order. Usually used for imaging or optical information processing. The optical system composed of two or more refracting spheres with the center of curvature on the same straight line is called a coaxial spherical system, and the straight line where the center of curvature is called the optical axis. In addition to the related issues of Gaussian optics, an optical system also needs to consider a series of issues such as the size of the imaging range, the size of the imaging beam aperture angle, the width of the imaging band, and the clarity and illuminance of the image. The actual optical system that meets a series of requirements is often composed of a series of ...

AI Technical Summary

Problems solved by technology

[0003] At present, the optical system of the existing security lens is not clear enough, and the light transmission is insufficient; in order to achieve a clearer image, the existing security lens usually uses an aspheric lens, which will greatly increase the cost

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