Figure 1: Scientific Reports

Figure 1

From: Smartphone-based multi-contrast microscope using color-multiplexed illumination

Figure 1
Figure 1

Operating principle of color-coded LED microscopy. Patterned illumination with a color LED array and subsequent computation enable acquisition of bright-field (BF), dark-field (DF), and differential phase-contrast (DPC) images in a single shot. Summation of the images in red (R) and blue (B) colors produces BF images. The image in green (G) corresponds to the DF image. The DPC image is obtained by evaluating the difference between the images in red and B, with subsequent division of the difference by the BF image. OBJ: Objective lens.