2004 年 44 巻 6 号 p. 260-264
Phase contrast microscopy is widely used in the field of cell biology. A weak point of this microscopy is a kind of optical noise, 'halo', which appears around the objects and reduces resolution of the images. To remove the halo, Otaki recently introduced apodization method to the phase contrast microscopy and improved quality of the images. Here, we review a mechanism of halo reduction by the apodized phase contrast microscopy.