Parameters Test And Combination Experiment Systems Of 128×128 Pyroelectric Infrared Focal Plane Arrays

Low cost lightweight uncooled infrared thermal imaging sensors (UIRTIS) are widely used both in military and civilian applications．It is significant to exploit own uncooled infrared focal plane arrays (IRFPA) in our country. Compare with other UIRTIS, the pyroelectric IRFPA has the specialties such as quickly responsibility , low power consumption, no constant temperature keeping, and easily to be manufactured ,etc.It is necessary to test the parameters of the imaging sensors and the readout integrated circuit (ROIC) , and evaluate the imaging performance of imaging sensors in the process of developing a new 128×128 pyroelectric IRFPA. Based on the virtual instrument (VI) technology , the indispensable parameters testing system and the combination imaging experiment system have been developed. The main works of this paper are:As the hardware and software of the original IRFPA ROIC parameters testing system have been upgraded to achieve the main parameters and accurately evaluate the performance of the new 128×128 ROIC of pyroelectric IRFPA, several ROIC chips have been measured. The testing results are helpful to improve the performance of ROIC and study more pixels IRFPA in the future.The combination experiment system of the pyroelectric imaging sensors and the essential VI software system have been developed. In the process of combination experiment , the driving signal source , the chopper fixture and the infrared compound lens have been adjusted to make the imaging experimental system continually operate at optimum performance and achieve the pyroelectric infrared thermal imaging. The imaging performance of the sensor can be shown directly by thermal imaging, and the exploiting of the new uncooled infrared thermal imaging sensor has proved to be successful by the image.Based on VI, the IRFPA parameters testing software system with friendly interface and simply operation program has been developed by the author, and has been successfully used to measure one type cooled IRFPA. This paper has presented a low cast, efficacious experimental facility and parameters testing method for developing the IRFPA sensor.