自研无镜片光谱仪，低成本测灯光色温与显色性
A Light Fixture Color Temperature and Color Rendering Index Measuring Device
- 无透镜结构设计，避免色差干扰
- 实测多种光源，准确计算CCT与CRI
- 适合照明研发与质量检测人员使用
人工光源的相关色温（CCT）和显色指数（CRI）对人类生物节律和专业应用具有重要意义。尽管商用灯泡通常提供CCT数据，但CRI却很少被报告。现有测量设备依赖光谱仪，成本高昂且难以获取。本文详细设计并构建了一种新型测量装置，涵盖结构、传感器接口、算法计算及补偿机制，旨在实现光谱仪的专用功能，且无需光学透镜。该设计不仅简化了设备结构，还避免了透镜引起的色散误差。原型机验证有效，可准确捕捉各类光源的光谱功率分布，并计算其CCT与CRI。
原文摘要 · Abstract (English)
The correlated color temperature (CCT) and color rendering index (CRI) of artificial light sources are important because they have implications for human biology and professional applications. Although CCT information is generally available for commercial lamps, CRI is commonly not reported. In addition, devices measuring these parameters are difficult to access as they require a spectrophotometer, a commonly expensive device. In this context, the present work designs and builds a meter in detail, from the structural part of the equipment, interface with sensors, and the calculation to the compensation algorithms implementation, aiming to build the dedicated functionalities of a spectrophotometer, which is designed without the use of optical lenses. In addition to simplifying the device, this approach allows measurements free from dispersions caused by chromatic aberrations typical of optical lenses. The prototype obtained proved to be effective, capturing the spectral power distributions of various light sources and calculating their CCT and CRI.
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