WDI’s next generation Precision Focus Automation “PFA” technology features the world’s most powerful microscopy autofocus sensors. Driven by demand from the Biomedical industry for fast and accurate autofocus solutions, WDI has developed and refined its technology to create PFA-DT. The new sensor provides many advancements in speed, accuracy, processing and communication, all at a very affordable price.

All PFA-DT feature:

  • Higher update rate and faster measurements result in improved high-speed tracking performance

  • Offset Adjuster (OA) lens versions available to compensate for variances between the sensor focal plane and the camera imaging plane

  • Major improvements in memory, processor power, function, adaptability and programmability

  • Diagnostic and performance reporting provides real-time analytic and statistical metrics

  • Up to 8 KHz update rate and faster processing result in improved high-speed tracking performance.
  • Significant upgrades in memory, processing power, and functionality improve the sensor’s adaptability and programmability.
  • The PFA-DT features a configurable output supporting both analog output and digital step and direction, making it a universal solution that can interface with Piezo actuators, Dover Motion’s DOF-5, WDI PFABUS ZAAs and other third party Z axis stages.
  • Offset Adjuster (OA) lens versions available to account for variations between the sensor focal plane and camera imaging plane.
  • Real-time diagnostic and performance reporting with insightful analytics and statistical metrics.
  • Gigabit Ethernet communication and Linux OS provide greater reliability and enhanced capabilities.
  • Available laser wavelengths include 660nm, 785nm, 850nm.
  • Gigabit Ethernet communication and embedded Linux OS provide greater reliability and enhanced capabilities.
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Reflective Dark Field (RDF) illumination, a powerful observation and inspection method in optical microscopy, uses oblique light to allow visualization and imaging of structures normally not seen. Many applications such as dust and scratch defect detection in FPD and semiconductor manufacturing make use of RDF. WDI’s new patent pending RDF illuminator technology provides significant improvements over existing techniques and integrates with our current line of single objective and multi objective PFA MMS technology to provide customers with an automated BF/DF imaging platform.

All PFA RDF Illuminators feature:

  • Dedicated separate LED illumination source allows simultaneous reflected BF/DF illumination or fast switching between them

  • Object of interest detectability is 10 times greater at the sub micron level over conventional RDF illumination techniques

  • Compatibility with Mitutoyo BD Plan APO or BD Plan APO HR objectives lenses (other objective lens support available upon request)

  • Dedicated PFABUS™ COB controller, providing power and controls for intensity, timing, and mode of operation

  • Several modes of operation including DC (Direct Current), Pulse Width Modulation (PWM) along with two external trigger modes (Pulse Follow and Pulse Trigger)