Unlike traditional light sources that incorporate a heated filament to produce light, LED illuminators are semi-conductor devices. LED is an acronym for Light Emitting Diode. LEDs use electroluminescence to create light through a p-n connection that releases energy in the form of photons.
Yeah, we’re not sure exactly what that means either. However, the important facts about LEDs are these:
1. Halogen bulbs usually last less than 1000 hours. Halogen bulbs that are operated consistently at full voltage usually last less than 300 hours. LEDs are generally guaranteed to last between 25,000 and 50,000 hours. That means if an LED was being operated at its highest intensity 24/7/365, it would last almost 6 years.
2. LEDs use substantially less electricity. This means that a rechargeable battery powered LED microscope will routinely last up to 8 hours.
3. White light LEDs emit light at a much higher color temperature than incandescent or halogen bulbs. The typical halogen bulb has a color temperature of 3400K while LEDs for microscopes are generally rated between 5000 and 6300K. This higher color temperature eliminates the need for a blue filter and is much easier on the eyes. Also, LEDs maintain color temperature across the full range of intensity and that makes digital imaging and HD live view imaging simpler because you only need to white balance once.
Ludesco offers LED microscopes, battery operated LED microscopes, LED ring lights, LED light sources with bifurcated cables and high intensity LED fluorescent illuminators.