High-resolution floating focusing system suitable for different object distances and lens

Abstract

The invention discloses a high-resolution floating focusing system suitable for different object distances, and the system comprises a first lens with positive focal power, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power, which are sequentially arranged from the object side to the phase side. The second lens has positive focal power, and the second lens and the first lens are arranged at an interval; the third lens has negative focal power, and the third lens and the second lens form a cemented lens; a diaphragm; the fourth lens has negative focal power, and the fourth lens and the diaphragm are arranged at an interval; the fifth lens has positive focal power, and the fifth lens and the fourth lens are arranged at an interval; the sixth lens has positive focal power, and the sixth lens and the fifth lens are arranged at an interval; a seventh lens; the eighth lens has negative focal power, and the eighth lens and the seventh lens form a cemented lens; and the photosensitive chip is used for capturing the imaging signal and forming an image. By arranging lens combinations of different structures and reasonably distributing the focal power of each lens, high-resolution images under different object distances are obtained, and the lenses of the front group and the rear group of the system are separated by a certain distance in front of and behind the diaphragm, so that adjustment of a floating focusing mechanism in structure is facilitated.

Description

technical field [0001] The invention relates to the field of optical lenses, in particular to a high-resolution floating focusing system suitable for different object distances and an FA lens. Background technique [0002] The role of FA lenses in machine vision, industrial detection and scientific research applications is more and more extensive, and the market potential is huge. In order to meet diverse industrial needs, such lenses often need to focus at different object distances, and the imaging at different object distances should be as consistent as possible. However, the quality of such lenses on the market is uneven, and the pixels are often low and cannot meet the requirements of use. SUMMARY OF THE INVENTION [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a high-resolution floating focusing system and FA lens suitable for different object distances, which c...

AI Technical Summary

Problems solved by technology

For this reason, the present invention proposes a high-resolution floating focusing system and FA lens suitable for different object distances, which can solve the focusing needs and low pixel problems of existing lenses

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