什么是灯具污损折旧(LDD)
灯具污损(LDD)是指由于灯具表面积聚污垢、灰尘或其他污染物而导致灯具的光输出或性能下降。随着时间的推移,灯具上堆积的污垢和碎屑会阻碍光线的发射,导致到达所需区域的光量减少。
LDD 系数是衡量灯具性能受污垢积累影响程度的一个指标。它通常用百分比或系数表示,代表污垢折旧造成的光输出减少。LDD 系数是 照明设计和维护 因为它有助于估算光输出随时间推移而减少的情况,并制定适当的清洁和维护计划。
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- 占用(自動開/自動關)
- 12–24V 直流(10–30VDC),最大 10A
- 360° 覆蓋範圍,直徑 8–12 米
- 延遲時間 15 秒–30 分鐘
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- 高/低感度
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要确定室内环境的 LDD 系数,可采用 IESNA/NALMCO RP-36-03 中概述的五步程序、 计划性室内照明维护推荐做法通常遵循的程序是这一程序包括确定工作环境的特征、对灯具进行分类、确定 CIE 分类、根据工作环境和 CIE 分类指定一个字母,以及从文件中公布的一组曲线中选择合适的 LDD 因子。


















