利用积分球实现可调照度漫射定标检测光源

针对像增强器老化特性检测所需要的色温稳定、低照度照明、照度在几个数量级内可调、均匀性好、稳定性高的漫射光源,进行了方案设计.主要包括光源和控制两部分:光源部分采用了积分球,在对积分球相关理论分析的基础上,自主设计了积分球,通过光度学的正反推算,从理论上充分证明了该部分的设计能够满足用户要求,完成光路设计.以51单片机为核心的控制部分,采用本地控制和远程串口控制两种方式,实现对光源的通电、断电、预冷和预热的控制等,远程控制采用RS232串口实现与PC机通信.且设计实现了对像增强器处检测照度的监控,保证检测照度稳定.

Adjustable Illuminance Diffusion Calibration Light Source Produced with Integrating Sphere

The light source used for image intensifier aging characteristic examination must be good color stability, low and adjustable luminous flux, good homogeneity and high creditability diffuse light. A project design is made, mainly including light source and control part. Integrating sphere is adopted in light source design. A special integrating sphere was designed based on theoretical analysis. It's proved that the design can satisfy the technical requirement in theory. A slice machine is the core of control part. The design of control part adopts native control and telecontrol to control the power and temperature of light source. RS232 serial-port is used to realize communication with PC machine. The supervision of the luminous is realized for measurement where image intensifier is placed.