摄影镜头光谱透射率及色贡献指数的精确测定仪器

An Instrument for Accurate Measurement of Spectral Transmittance and Colour Contribution Index of Camera Lens

光谱透射率及色贡献指数是衡量摄影镜头质量优劣的重要指标,生产厂家迫切需要对其作精确测定。我们研究开发出一种测定仪器,本文介绍它的工作原理、自动扫描控制电路以及提高测定精确度的措施。最后给出该仪器的测试结果。

The spectral transmittance and colour contribution index are two important quality indexes of colour camera lens.Accurate measurement of above indexes is an imperative demand of factories which produce colour camera lens.This paper describes the principle and automatic scanning circuit of a measuring instrument developed by the authors and discusses measures to improve its accuracy of measurement.Measurement results of this instrument are given.