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FACILITY FOR CALIBRATION OF PHOTOMETERS FOR TEMPORAL LIGHT MODULATION 光度计时间光校准装置的调制
发布日期: 2021-09-29
我们开发了一种用于校准TLM(时间光调制)光度计的设备。该设备基于激光馈电的参考源,其辐射度可通过声光调制器(AOM)进行调制。由光电二极管、放大器和模数转换器(ADC)组成的系统用于对光源的时间调制辐射进行采样。利用该设备,对TLM光度计进行了显示对比度RMS(均方根)校准,绝对组合标准不确定度为0037%。 此外,考虑到生态设计单一照明规定,该设施的特点是测量闪烁和频闪效应。该设备的频率响应足以适应闪烁和频闪效应的测量。
We developed a facility for calibration of TLM (temporal light modulation) photometers. The facility is based on a laser-fed reference source, of which the radiance can be modulated with an acousto-optic modulator (AOM). A system of photodiodes, amplifiers, and an analog-to-digital converter (ADC) is used to sample the temporally modulated radiance of the source. With the facility a TLM photometer was calibrated for display contrast ratio RMS (root mean square) with an absolute combined standard uncertainty of 0,037 %. In addition, the facility has been characterised with the aim of measuring flicker and stroboscopic effect, considering the Ecodesign Single Lighting Regulation. The frequency response of the facility shows to be sufficient to accommodate measurements of flicker and the stroboscopic effect.
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发布单位或类别: 国际组织-国际照明委员会
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