由中国科学院长春光学精密机械研究所、光化学所和上海光学仪器厂共同研制的42W 型高精度显微密度计已于最近通过国家级鉴定。该仪器可用于胶片特性测试,是胶片模量传递函数测量的重要手段,还可以用于航空、遥戚、天文、地质、生物、医学等领域的图象信息处理。这是我国首次研制成功的一种大型,高精度、自动化程度较高的显微密度计。仪器的特点是光机电综合性强,除可用数控程序操作外,主机还成功地 42W-type high-precision micro-densitometer jointly developed by Changchun Institute of Optics, Fine Mechanics, Chinese Academy of Sciences, Institute of Photochemistry and Shanghai Optical Instrument Factory has recently passed the national appraisal. The instrument can be used to test the film properties and is an important measure of the film modulus transfer function measurement. It can also be used for image information processing in aviation, remote sensing, astronomy, geology, biology, medicine and other fields. This is the first successful development of a large-scale, high-precision, high degree of automation of the micro-density meter. The instrument is characterized by a comprehensive mechanical and electrical optoelectronic, in addition to the use of CNC program operation, the host also successfully