Spatial resolution of mobile phone microscopy is dependent on microscope optics.

A The resolution that can be captured with a mobile phone microscope approaches that of a scientific camera coupled to the same optics across a range of numerical apertures. Inset shows the measured intensity profile across bars of non-transmitting chrome spaced at 512 line pairs per millimeter and taken with a 10×/0.25 NA objective, as well as the ideal target profile. The Michelson contrast calculated for this example group is 41%, indicating that features with this spacing are resolved. B Wright stained blood smear with an inset of a granulocyte and red blood cells taken with a 10×/0.25 NA objective and iPhone 4. C Image of the same sample and region of interest taken with a 40×/0.65 NA objective and iPhone 4 showing improved resolution.A 手机显微镜所能达到的拍摄分辨率，在一系列数值孔径（numerical aperture）下，可媲美搭配相同光学系统的科研相机（scientific camera）。插图展示了以10×/0.25 NA物镜拍摄的、间距为每毫米512线对的不透光铬条的实测强度分布，以及理想目标强度分布。针对该示例组计算得到的迈克耳孙对比度（Michelson contrast）为41%，表明该间距的特征已被分辨。 B 为经瑞氏染色（Wright stained）的血涂片，其插图展示了以10×/0.25 NA物镜搭配iPhone 4拍摄的粒细胞与红细胞。 C 为使用40×/0.65 NA物镜搭配iPhone 4拍摄的同一样本与感兴趣区域的图像，分辨率有所提升。