盐雾测试对光学成像系统成像分辨率的影响

Effect of the Salt Mist Testing on Imaging Resolution of the Optical Imaging System

光学成像系统成像质量的标准评判方法分为基于电信号的评估和基于图像的评估方法,但环境测试对其成像质量的影响鲜有研究。本文旨在分析盐雾环境试验前后典型光学成像系统的成像质量。通过研究其成像分辨率,并设置了不同的光学环境,讨论在不同光学环境下环境测试对其成像分辨率的影响。研究发现,不同光照条件对成像分辨率有较大影响,良好的光照条件可以有效提高摄像产品的分辨率。长时间的盐溶液暴露对摄像机有不可逆的影响。摄像产品对盐雾老化试验的耐受性呈两级分布状况,部分产品完全失效,部分产品耐受性良好失效不明显。

This paper analyzes the imaging quality of typical optical imaging system before and after salt mist testing.The influence of environmental testing on imaging resolution under different optical environments is also discussed here.It is found that different illumination conditions have great influence on imaging resolution,and good illumination conditions can effectively improve the resolution of camera products.In the other hand,salt mist aging testing has a great influence on the imaging resolution of the camera products,and longtime exposure to sodium chloride solution has an irreversible effect on the imaging performance of the camera.The tolerance of cameras to salt mist aging test shows two-level distribution.Some products are completely invalid,and some products have good tolerance and no obvious failure.This paper will provide reference for the producers,users,installation and maintenance personnel and the standard drafter.