紫外像增强器辐射灵敏度测量系统

紫外像增强器是紫外探测系统的核心器件，是一种电真空成像器件，可将微弱的紫外光图像转换并增强为肉眼可见、亮度可见的光图像，其研制与应用是微光夜视技术的重要发展方向。辐射灵敏度是评价紫外像增强器的重要参数，直接决定了紫外探测系统的性能。介绍了紫外像增强器辐射灵敏度的测量原理，采用紫外辐射光源、光栅单色仪系统、测试暗箱、微电流计、计算机及测量软件组建了辐射灵敏度测量系统。对3只紫外像增强器在260 nm、280 nm及320 nm波长下的辐射灵敏度进行了测量，并分析了其测量不确定度。该测量系统的建立，将辐射灵敏度测量系统的光谱范围拓展至200 nm～400 nm，弥补了现有系统的不足，具有广泛的应用前景。

Measurement system of radiation sensitivity for UV image intensifier

The ultraviolet (UV) image intensifier is the core device of the UV detection system, which is a kind of electric vacuum imaging device, and can transform and enhance the weak UV images into the optical images that can be detected by eyes. The development and application of the UV image intensifier is an important orientation of the low-light-level night vision technology. The radiant sensitivity is a key parameter to evaluate the UV image intensifier, which directly determines the performance of the UV detection system. The measuring principle of the radiant sensitivity for UV image intensifier was introduced, and the measuring system was constructed by the UV radiation source, grating monochromator system, testing dark box, micro galvanometer, computer and measuring software. The radiant sensitivity of three UV image intensifier at wavelengths of 260 nm, 280 nm and 320 nm was measured, respectively, and the measurement uncertainty was analyzed. The spectral range of the radiant sensitivity measuring system is extended to 200 nm～400 nm by the establishment of the measuring system, which makes up for the deficiency of the existing system and has broad application prospects.