Concentric alignment of the condenser phase plate slits with the phase ring, positioned inside the objective, is of paramount importance in phase contrast microscopy. This tutorial explores the effect of phase plate/ring alignment on specimen contrast using this important microscopy technique.

Each time the tutorial is first downloaded or subsequently reloaded, a new set of alignment parameters is automatically initialized by the applet. To operate the tutorial, first adjust the specimen Focus and Intensity sliders to achieve the best possible image. Next, use the Phase Ring Position X and Y sliders to maximize specimen contrast. The Phase Telescope radio buttons will allow the visitor to toggle between viewing alignment of the phase ring/plate and the field view of the specimen. To ensure proper phase ring/plate alignment, first toggle the Phase Telescope radio button to the In position and use the sliders to align the plate outline within the phase ring. Then toggle the Phase Telescope out of the light path to view the specimen under optimum conditions of phase contrast illumination. The Reset button allows the visitor to randomly reset the applet.

---

BACK TO PHASE CONTRAST MICROSCOPY

BACK TO SPECIALIZED TECHNIQUES

Questions or comments? Send us an email.

© 1998-2022 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.

This website is maintained by our
Graphics & Web Programming Team
in collaboration with Optical Microscopy at the
National High Magnetic Field Laboratory.

Last modification: Tuesday, Sep 13, 2016 at 10:55 AM

Access Count Since August 25, 1999: 217358

For more information on microscope manufacturers,
use the buttons below to navigate to their websites: