There are four fibres, fused to form one at the delivery point of the light from the laser. They were set onto a calibrated transparent template to ensure a common focus and set in polymerising resin. These views show the appearance of the delivery system for the laser light .
The appearance of the final prototype is shown (above left). In close-up (above right) the optical fibre array can be seen in juxtaposition with the transparent culture wells, where it provuides an effective dark-ground illumination system. If LED's are substituted, image contrast can be increased electronically.
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