CELL OBSERVATION DEVICE

The present invention is a cell observation device in which two-dimensional distributions of phase information and intensity information are computed based on hologram data obtained with a holographic microscope. An image display screen (100) displayed on a display unit includes an image display area (120) having two image display frames (121, 122). A phase image and intensity image corresponding to the same observation range on a cell culture plate (12), on which the cells to be observed are cultured, are displayed in the image display frames (121, 122), respectively. The wells on the plate, which are almost invisible on the phase image, are clearly visible on the intensity image. Conversely, the biological cells, which are almost invisible on the intensity image, are observable on the phase image. An observer specifies the range to be observed within a well on the intensity image, and subsequently enlarges the image corresponding to that range so as to observe the cells in detail on the phase image. Thus, the cells which are present within a desired range in the well can be assuredly observed.