Super-economical glass-plastic hybrid 4K zoom optical system

Abstract

The invention relates to a super-economical glass-plastic hybrid 4K zoom optical system. The super-economical glass-plastic hybrid 4K zoom optical system includes a front group A with a negative focalpower and a rear group B with a positive focal power, which are sequentially arranged from front to back along the incident optical path; the front group A includes a meniscus negative lens A-1, a biconcave lens A-2, and a meniscus positive lens A-3 arranged in the order from front to back; and the rear group lens B includes a biconvex lens B-1, a biconvex lens B-2, a biconcave lens B-3, a biconvex lens B-4, and a meniscus negative lens B-5, which are sequentially arranged from front to back; wherein the biconcave lens A-2, the meniscus positive lens A-3, the biconvex lens B-2 and the biconcave lens B-3 are made of a plastic material, and the front and rear mirror surfaces are aspherical. The super-economical glass-plastic hybrid 4K zoom optical system disclosed by the invention has a simple structure, a small volume, and a low cost, and solves the problems of the zoom lens in the prior art that the sharpness is insufficient, the cost is increased caused by the use of a multi-lens structure, the structure is complicated, and light and small zoom lenses cannot be realized.

Description

technical field [0001] The invention relates to an ultra-economical glass-plastic hybrid 4K zoom optical system. Background technique [0002] There are various zoom lenses currently on the market for use in security systems. However, most of them use glass spherical surface design, which is limited by the poor processing accuracy and high cost of the glass spherical surface. It is difficult for the lens to meet the market demand in terms of pixels, performance and cost. At the same time, the structure is complex, and it is difficult to realize that the zoom lens can also be small and light. expectations. In order to improve performance and pixels, more glass lenses are used to achieve higher-definition image quality, which greatly increases product costs and makes product promotion more difficult. At present, in the security industry, there are few low-cost, high-quality, low-temperature drift in the true sense. Contents of the invention [0003] In view of this, the o...

AI Technical Summary

Problems solved by technology

However, most of them use glass spherical surface design, which is limited by the poor processing accuracy and high cost of the glass spherical surface. It is difficult for the lens to meet the market demand in terms of pixels, performance and cost. At the same time, the structure is complex, and it is difficult to realize that the zoom lens can also be small and light. expectations

In order to improve performance and pixels, more glass lenses are used to achieve higher-definition image quality, which greatly increases product costs and makes product promotion more difficult.

At present, in the security industry, there are few low-cost, high-quality, low-temperature drift solutions in the true sense.

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