Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA 94305-5208, USA.
J Trop Pediatr. 2013 Dec;59(6):496-501. doi: 10.1093/tropej/fmt062. Epub 2013 Jul 23.
We evaluated nine semi-transparent plastic window-tinting films for their ability to block ultraviolet A (UVA) and infrared (IR) radiation and transmit therapeutic blue light (400-520 nm) for treating jaundiced newborns. For indoor testing, three light sources (TL/52 special blue fluorescent, Black Light UVA and IR heat lamps) were positioned above each film and measured successively using a thermocouple thermometer, UVA radiometer and blue light irradiance meter, placed below each film. For outdoor testing, the same setup was used with the sun at zenith and a cloudless sky. Compared with unfiltered radiation, blue light transmission through films ranged from 24 to 83%, UVA transmission was 0.1-7.1% and reductions in IR heat were 6-12°C and 5-10°C for heat lamp and sun, respectively. The data suggest that most of the relatively low-cost window-tinting films tested can effectively reduce sunlight UV and IR and offer a range of significant attenuations of therapeutic blue light.
我们评估了九种半透明塑料窗贴膜，以评估它们阻挡紫外线 A (UVA) 和红外线 (IR) 辐射并传输治疗性蓝光 (400-520nm) 的能力，用于治疗黄疸新生儿。对于室内测试，将三个光源（TL/52 特殊蓝色荧光灯、黑光 UVA 和 IR 热灯）放置在每个膜上方，并使用放置在每个膜下方的热电偶温度计、UVA 辐射计和蓝光辐照度计依次进行测量。对于户外测试，使用阳光直射和无云的天空，采用相同的设置。与未过滤的辐射相比，通过膜的蓝光传输范围为 24% 至 83%，UVA 传输率为 0.1% 至 7.1%，IR 热分别降低 6-12°C 和 5-10°C 用于热灯和太阳。数据表明，测试的大多数相对低成本窗贴膜可以有效减少阳光中的紫外线和红外线，并提供治疗性蓝光的显著衰减范围。
