THE DEVICE FOR THE MEASUREMENT OF THE VEILING GLARE INDEX OF LONG FOCAL OPTICAL SYSTEM
长焦距光学系统杂光系数测试仪

This paper presents a new device for measuring the veiling glare index of long focal lengthoptical system. The device can make the precise measurements of veiling glare index at an extra-axialobject point and analyze the influence of each stray light source on the veiling glare index as well asavoiding making the large diameter integrating sphere.