Coupland S G, Kirkham T H
Can J Ophthalmol. 1981 Jul;16(3):136-40.
Contrast sensitivity was measured to quantify the glare-reducing effects of antireflective coatings of magnesium fluoride on spectacle lenses. Experiments were conducted on four subjects, who judged contrast thresholds while wearing corrective spectacles with noncoated and then coated lenses in both the absence and the presence of a source of glare (back-scattered reflection from the posterior surface of their lenses). Glare substantially reduced contrast sensitivity at all spatial frequencies; although the reduction was greater at higher spatial frequencies ther was no shift in peak contrast sensitivity. The coated lenses enhanced contrast sensitivity in the presence of glare between 1.5 and 5 times compared with the noncoated lenses. In the absence of glare, contrast sensitivity was greater with coated lenses than with noncoated lenses.
通过测量对比敏感度来量化氟化镁减反射涂层对眼镜镜片的眩光减少效果。对四名受试者进行了实验，他们在佩戴矫正眼镜时判断对比度阈值，眼镜镜片先是未镀膜的，然后是镀膜的，且分别在有和没有眩光光源（镜片后表面的背向散射反射）的情况下进行测试。眩光在所有空间频率下都显著降低了对比敏感度；尽管在较高空间频率下降低幅度更大，但峰值对比敏感度没有偏移。与未镀膜镜片相比，镀膜镜片在有眩光情况下可将对比敏感度提高1.5至5倍。在没有眩光的情况下，镀膜镜片的对比敏感度也高于未镀膜镜片。
