Zoom optical imaging system

Abstract

The invention provides a zoom optical imaging system. The optical system comprises a compensation group and a zoom group which are sequentially arranged from left to right along a light incident light path, the compensation group has negative focal power, and the zoom group has positive focal power; the compensation group comprises a first lens, a second lens and a third lens which are sequentially arranged from left to right along a light incident light path; the zoom group comprises a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens which are sequentially arranged from left to right along a light incident light path; and the focal length of the first lens of the optical system is f1, the focal length of the compensation group is fi, the focal length of the zoom group is fii, and the parameters meet the following relation: fi / f1 is more than or equal to 0.1 and less than or equal to 2.0, and fii / f1 is more than or equal to -2.0 and less than or equal to -0.1. The system adopts a glass-plastic structural design, has lighter system mass compared with an all-glass system, and has stronger optical performance stability compared with an all-plastic system.

Description

technical field [0001] The invention relates to a zoom optical imaging system. Background technique [0002] The "Skynet" composed of cameras is an important weapon for safeguarding the safety of people's lives and property. In recent years, the state and more and more enterprises and institutions have paid more and more attention to the construction of an all-weather, no dead angle, high-quality surveillance camera network. At the same time, as people's lives become more and more prosperous, more and more people hope to have a monitoring device with various functions to provide security protection. However, the related products currently on the market are generally difficult to take into account optical characteristics such as high image quality, large market, day and night use, zoom, etc., and it is difficult to meet the security needs of the public. Contents of the invention [0003] The present invention improves the above problems, that is, the technical problem to ...

AI Technical Summary

Problems solved by technology

However, the related products currently on the market are generally difficult to take into account optical characteristics such as high image quality, large market, day and night use, and zoom, and it is difficult to meet the security needs of the public.

Images