The new lens, which is thinner at the bottom than at the top, steers light to a viewer's eyes by switching light-emitting diodes along its bottom edge on and off.
这个新镜头，底部比顶部更薄，通过切换镜头底部边缘的发光二极管的开和关，控制进入到观众的眼睛的光线。
The effects of DBR reflectivity and well Numbers on threshold current and output power of bottom-emitting VCSELs were analyzed to design an optimal device structure.
分析了腔镜反射率、量子阱数等参数对阈值电流、输出光功率的影响，并根据理论计算对器件参数进行了优化设计。
The study is for diffusely emitting, diffusely and specularly reflecting inner wall of tube and its bottom black body surface of a fictitious circle burner.
圆管壁为漫发射、漫反射镜反射混合分布，管底部为假想的圆形黑体辐射器。
The contacting area of the electron-emitting layer and the cathode electrode is limited to the periphery except a center part on the bottom face of the hole.
因此，由于电子发射层接收来自位于其侧 面的阴极电极的电子，所以电子主要从电子发射层表面的边缘部发射， 借此提高电子聚焦性能。
The contacting area of the electron-emitting layer and the cathode electrode is limited to the periphery except a center part on the bottom face of the hole.
因此，由于电子发射层接收来自位于其侧 面的阴极电极的电子，所以电子主要从电子发射层表面的边缘部发射， 借此提高电子聚焦性能。
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