大型透明件透光率和雾度测量装置的研制

摘要

In order to obtain the luminous transmittance and haze of large transparent compo-nent in field ,measurement scheme and method of calibration of system parameters based on double integrating spheres structure were presented .Furthermore the testing device was de-signed and manufactured .The optical path of device was adjusted by 6 dimensional mechanical adjustment structure firstly .Then the modulated directional light was generated by the illumi-nation and collimation system based on LED source . Finally by using the detective part of double integrating spheres structure and the phase-locked amplifier technology ,the signal was demodulated accordingly .T he testing result show s that ,by using the device ,the absolute er-ror of light transmittance is no more than 1% and that of haze is no more than 0 .3% ,w hich meet the precision requirement of engineering application .Moreover the repeatability of device was also good .The relative standard deviation of luminous transmittance and haze was 0 .06 %and 0 .05% respectively .%为现场测量大型透明件的透光率和雾度，提出了基于双积分球结构的测量和系统参数标定方案，并设计研制了相应的透光率和雾度测量装置。该装置通过六维机械调整装置完成光路调整，基于L ED光源的照明准直系统产生调制平行光，最后采用双积分球结构的探测接收装置并结合锁相放大技术，实现光电信号的解调。测试结果表明，该装置对透光率测量的绝对误差不超过1％，对雾度测量的绝对误差不超过0．3％，符合工程应用对系统测量精度提出的要求。另一方面，装置具有很好的重复性，其对透光率和雾度测量的相对标准差分别为0．06％和0．05％。