4K high-definition optical system with large field of view and large aperture

Abstract

The invention relates to the technical field of optical systems, and in particular, relates to a 4K high-definition optical system with large field of view and large aperture. The 4K high-definition optical system is sequentially provided with a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, an IR optical filter and a photosensitive chip from the object side to the image side. By adopting a complex structure, spherical aberration, coma aberration, astigmatism, field curvature and other aberrations of the system are well eliminated; the bonding lens I, the bonding lens II, the bonding lens III and the bonding lens IV can effectively solve the problem of system chromatic aberration. The tolerance sensitivity of the optical system can be reduced, the process conditions are improved, the imaging quality of the lenses is improved, an all-glass spherical structure is adopted, the temperature stability is higher, the phenomenon of temperature drift of plastic lenses is avoided, and the 4K high-definition optical system has the advantages of large field-of-view angle, high image quality, large aperture and short length.

Description

technical field [0001] The invention relates to the technical field of optical systems, in particular to a 4K high-definition optical system with a large field of view and a large aperture. 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 (or reflecting) spherical surfaces whose curvature centers are on the same straight line is called a coaxial spherical system, and the straight line where the curvature center is called the optical axis. In addition to considering the relevant issues of Gaussian optics, such as the conjugate position of the object image, magnification, image rotation and turning optical path, etc., an optical system also needs to consider the size of the imaging range, the size of the imaging beam aperture angle, the width ...

AI Technical Summary

Problems solved by technology

[0003] The existing security lens has the following problems: the system definition is not enough, or the use of aspheric lens increases the cost when the definition is sufficient, or the problem of insufficient light transmission

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