用T值测量仪测量卤钨灯色温

云南光学仪器厂研制的TCY微光物镜T值测量仪不仅可以测量物镜T值,而且还可以测量和标定各种卤钨灯的色温。文章阐述了用该仪器测量色温的原理、方法。并重点分析了多方面的误差因素。还指出了提高精度的方法和注意事项。实际测试结果和理论计算吻合较好:在2000～3000K范围内其测量精度为±10 K左右。用该仪器测量色温,操作简便、省时、经济并有较高的精度。建议推广应用。

Measurement Colour Temperature of Tungsten Lamp by Means of T Number Measuring Instrument

The TCY low light level objective T Number measuring instrument made by Yun Nan Optical Instrument Factory not only can measure T number of an objective, but also can measure and calibrate colour temperature of tungsten lamps.The fundamental and method of measuring colour temperature by means of present instrument was described, and various error factors were mainly analysised,besides the methods and attention list of points of increasing accuracy were indicated also.The real measuring results were in accord d with theoretical calculates; its measuring accuracy is ±10 K in 2000 to 3000 K of colour temperature limit. Measuring colour tomperature by means of present instrument and its operation are concise, economic and rapid. The instrument posses the high accuracy of measurement, so it is worth to popularizo and to adopt.