Phase Contrast LED Illuminator with ultra-long working distance for inverted microscopes
The Cairn Aura Pro phase contrast illuminator allows true Zernike phase contrast with a working distance up to 230mm – perfect for electrophysiology where the sample platform can be very congested. Now with a universal rack and pinion design, the Aura Pro works with a range of inverted microscopes and includes a backwards tilting mechanism to move the unit out of the light path when required.
Based on a concept developed by Webb et al. at the University of Nottingham, the Aura Pro uses concentric rings of super-bright LEDs in place of the conventional condenser and phase rings. It provides the highest-quality phase contrast images with very simple alignment and works for Ph1, Ph2 and Ph3 imaging, along with darkfield imaging, with a range of colour options – white, blue, green, red and NIR.
The Aura Pro head itself is optimised for Phase Contrast illumination, but where brightfield may also be required, we have built in a central port where a brightfield LED and optics can easily be added, such as the Cairn MonoLED. We are also working on options to connect a macro lens and camera for low mag imaging from the top – watch this space!