注:被照表面的方向需注明。如:表面方向为水平或垂直时,可以分别得到水平照度或垂直照度。
但光降解速率常数的改变和照度之间不存在线性对应关系。
对环形荧光灯照度计算进行研究,提出一种简单而有效的计算方法——转换法。
实验结果表明,在较宽范围的光照度条件下,应用该系统均能获得良好的调焦效果。
视觉,电磁波谱,光通量(流明),发光强度(坎德拉),照度,亮度。
实验证明,相位叠合提取特征对图像的照度(或对比度)以及可能出现的噪声是不变的。
本发明提供了一种能在不增加电耗的情况下增加照度的头戴式矿灯。
结合人眼的生理特点,根据环境照度所对应噪声的大小,进行不同程度的噪声降低处理。
反射罩采用抛物面形,并镀铬抛光,反射率高,受照面照度均匀。
其次,由于天空状态的多变性,提出用天然采光系数替代照度进行实验验证;
采用单位容量法计算,能较好平衡准确度与简便度,为照度计算的实际运用加大了可操作性。
1·Objective To explore the effects of microclimate and illuminance on sick building syndrome (SBS) or office syndrome in the office workers population working in sealed buildings in winter in Shanghai.
目的探讨上海市冬季室内微小气候和照度对封闭式空调办公室人员中不良建筑物综合征(SBS)或办公室综合征发生影响的情况和程度。
2·Photometers are specifically designed to measure emitted, reflected or transmitted light in photometric terms of luminous flux, luminance, illuminance or luminous intensity.
光度计是专门用于测量发射,反射或透射光的光通量,亮度,照度或发光强度等。
3·Low light level TV is usually operated under extremely low illuminance or other adverse circumstances and the output SNR decreased to such a level that possibility of detection is greatly reduced.
微光电视工作于极低照度或恶劣环境下,输出信噪比明显降低,目标完全淹没在背景噪声中,使探测率大大下降。
4·From the viewpoint of control theory, the artificial lighting control strategy was given indirectly under the condition of a given constant illuminance and it could realize the lighting energy saving.
从控制理论的角度,间接给出了恒定照度下人工照明的补偿控制策略,以实现照明节能。
5·Thus to create a good lighting environment for the traffic squares, we should not only pay attention to the horizontal illuminance, but also vertical illuminance within the space.
因此塑造良好的交通广场照明环境不能只注重水平照度,还包括垂直方向的光线数量。
1·The composition, structure and realization of a real time illuminance monitoring system with a single-chip microcomputer. computer as its main component are presented.
本文介绍了一个以单片微型计算机为核心的光照度实时监测系统的组成、结构及具体实施措施。