Leica DM E A voltage-sensing power supply optimizes light intensity regardless of voltage fluctuations, and is designed to meet international safety standards to facilitate usage anywhere in the world Illumination is easily upgradeable with interchangeable 20W and 35W lamps The Leica DM E illumination efficiency allows the use of a lamp with a life 20 times longer than what is used in other microscopes, saving money and time in replacements An easily-removed diffuser can provide more than 400% additional light, making the Leica DM E the brightest in its class The system's wide dynamic range allows for comfortable viewing for a variety of applications, including darkfield, brightfield, polarization, phase contrast and photomicrography An illuminated intensity control signals users when the microscope has been left on, saving on lamps life An angled lamp door prevents the door from accidentally breaking The Koehler option is available to provide illumination for more exacting techniques like phase contrast and photomicrography