doric -Model S -Snap-in Imaging Cannula

For deep brain regions (0 mm to 8 mm deep), use the Twist-on efocus Imaging Cannula Model L that brings the image from inside the brain to the skull surface with an image guiding gradient-index rod lens. The Twist-on efocus Imaging Cannulas are compatible with Twist-on efocus Fluorescence Microscope Bodies only. The different depth ranges of brain tissue are accessed with different lens lengths while fine adjustment is done with the protrusion adjustment rings that come with each cannula. It is recommended to use the smallest lens for the desired depth for a higher stability and image quality. Two diameters of GRIN lenses are available: 500 µm diameter GRIN lens offers smaller footprint while 1000 µm diameter lens provides a larger field of view.