Reflected Darkfield

The Reflected Darkfield (RDF) illuminator is a medium power LED illuminator designed for modern inspection and review applications. It is designed to minimize the amount of light hitting a sample outside the FOV of the objective lenses and to acquire RDF images with the lowest possible background. This illuminator is driven by WDI’s COB controller (sold separately) to provide darkfield illumination with Mitutoyo BD Plan Apo objective lenses.

 

Features

• All-around darkfield illumination providing ten times greater detectability for object-of-interest, at sub-micron level, over conventional RDF illumination techniques.
• Compatible with single objective and WDI’s three-lens BF/DF lens changer allowing for use in variety of applications.
• Dedicated PFABUS™ COB controller, providing power and controls for intensity, timing, and mode of operation including Direct Current (DC), Pulse Width Modulation (PWM) along with two external trigger modes (Pulse Follow and Pulse Trigger).

Applications

Darkfield illumination in microscopy that provides great contract compared to brightfield microscopy and applications where specimens are translucent, lack significant pigmentation, or are otherwise low in contrast benefit from this technique. Some specific applications include study of thin or transparent samples, observation of live unstained specimen, detection of small particles and surface defects, and material science.