The BL-CDW from Dino-Lite is a backlight stage designed for use with handheld microscopes. In Bright Field mode, light is transmitted from below the sample. Vividly showing the form and structure of the specimen on a bright background. In Dark Field mode, transmitted light will not reach the microscope and is eliminated from the image. Showing bright objects on a black background. Suitable for prepared specimen or live specimens. Adding a whole new dimension to microscopes with magnifications over 100x.