Knulst Arjan J, Stassen Laurents P S, Grimbergen Cornelis A, Dankelman Jenny
Department of BioMechanical Engineering, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Delft, Netherlands.
Surg Innov. 2009 Dec;16(4):317-23. doi: 10.1177/1553350609353766. Epub 2009 Dec 22.
The aim of this study is to evaluate the illumination characteristics of LED lights objectively to ease the selection of surgical lighting.
The illuminance distributions of 5 main and 4 auxiliary lights were measured in 8 clinically relevant scenarios. For each light and scenario, the maximum illuminance E(c) (klux) and the size of the light field d(10) (mm) were computed.
The results showed: that large variations for both E(c) (25-160 klux) and d(10) (109-300 mm) existed; that using auxiliary lights reduced both E(c) and d(10) by up to 80% and 30%; that with segmented lights, uneven light distributions occurred; and that with colored LED lights shadow edges on the surgical field became colored.
Objective illuminance measurements show a wide variation between lights and a superiority of main over auxiliary lights. Uneven light distributions and colored shadows indicate that LED lights still need to converge to an optimal design.
本研究旨在客观评估LED灯的照明特性，以方便手术照明的选择。
在8种临床相关场景中测量了5个主灯和4个辅助灯的照度分布。对于每种灯和场景，计算了最大照度E(c)（千勒克斯）和光场大小d(10)（毫米）。
结果显示：E(c)（25 - 160千勒克斯）和d(10)（109 - 300毫米）均存在较大差异；使用辅助灯会使E(c)和d(10)分别降低多达80%和30%；使用分段灯时，会出现光照分布不均匀的情况；使用彩色LED灯时，手术视野上的阴影边缘会变色。
客观照度测量表明，不同灯具之间存在很大差异，主灯优于辅助灯。光照分布不均匀和彩色阴影表明，LED灯仍需朝着优化设计方向发展。
