CAJ | 학술논문

光学角偏差为航空透明件的一个最重要光学性能指标.介绍了一种航空透明件光学角偏差测试仪,其光学系统采用LED光源、双光路、千兆网面阵相机等技术,实现了光学角偏差自动检测,并增加了分辨率检测功能.光斑位置检测为角偏差测试中的关键技术,其判断精度直接决定了仪器的精度.在模板匹配算法的基础上提出了一种新的检测光斑位置的亚像素算法,提高了仪器的测量精度.仪器的角偏差测量范围为±42.6′,测量的绝对误差≤±7″.
광학각편차위항공투명건적일개최중요광학성능지표.개소료일충항공투명건광학각편차측시의,기광학계통채용LED광원、쌍광로、천조망면진상궤등기술,실현료광학각편차자동검측,병증가료분변솔검측공능.광반위치검측위각편차측시중적관건기술,기판단정도직접결정료의기적정도.재모판필배산법적기출상제출료일충신적검측광반위치적아상소산법,제고료의기적측량정도.의기적각편차측량범위위±42.6′,측량적절대오차≤±7″.
Angular deviation is the most important optical performance parameter for transparent parts in aviation. The angular deviation tester for transparent parts in aviation introduced in this paper realizes automatic angular deviation detection and resolution test, which applies an LED light source, double light beams, a gigabit network camera and etc. Detection of the light spot position is the key technology in the measurement of angular deviation, whose precision directly determines the accuracy of the instrument. This paper presents a new subdivision method for the detection of the light spot position on the basis of template matching algorithm,which improves the measurement accuracy of the instrument. The angular deviation measurement range of this tester is ±42.6′, and the absolute measurement error reaches ±7″.