Duckworth W H, Rosenfield A R, Gulati S T, Rieger R A, Hoekstra K E
Am J Optom Physiol Opt. 1978 Dec;55(12):801-6. doi: 10.1097/00006324-197812000-00003.
Failure heights were measured in drop-ball tests for both chemtempered and heat-tempered plano, white crown glass lenses from five different optical laboratories. It was found that (1) failure height was proportional to the square of the lens thickness, (2) chemtempered lenses substantially thinner than 2.0 mm are as resistant to breakage as 2.0-mm-thick heat-tempered lenses, and (3) a close correlation existed between results of single-drop and multiple-drop tests and between results of tests using rigid and compliant mounts.
对来自五个不同光学实验室的化学钢化和平板热钢化白冕玻璃镜片进行了落球试验，测量了其失效高度。结果发现：（1）失效高度与镜片厚度的平方成正比；（2）厚度明显小于2.0毫米的化学钢化镜片与2.0毫米厚的热钢化镜片具有相同的抗破损能力；（3）单次落球试验和多次落球试验的结果之间，以及使用刚性支架和柔性支架进行试验的结果之间存在密切相关性。
