Posted in | Materials Analysis

OSA Provides Free Access to Papers Describing Advances to Phasefocus Virtual Lens Technology

Phase Focus Ltd (Phasefocus), the company that is revolutionising microscopy and imaging with the Phasefocus Virtual Lens®, announces that OSA is providing free access to two of its most downloaded papers, describing advances of the Phasefocus Virtual Lens®.

Two peer-reviewed articles that demonstrate advances in Phasefocus’ technology feature among the top twenty most-downloaded image processing papers published by the Optical Society of America over a two year period.

These popular articles describe Phasefocus’ advanced tomographic 3D reconstruction approach, which has applications for imaging thick samples such as biological tissues; and a super-resolution method that enables data to be extrapolated beyond the area of the detection sensor.

This sustained technical interest parallels advances in Phasefocus’ products and services in the areas of cell imaging, metrology and electron microscopy.

OSA is providing free access to these articles for the next 30 days; download them at:

Speaking on this exciting news, CEO Ian Pykett is pleased to see the extent to which the Phasefocus Virtual Lens technology (known academically as ptychography) is being accepted and adopted.

“Hearing of the success of these papers is clear recognition of the growing interest in the use of the Phasefocus Virtual Lens technology. Having already demonstrated its capability to improve resolution in electron microscopy and to characterise ophthalmic lenses, we are now seeing strong interest in its ability to perform phenotypic screening via label-free live cell assays.”

In the context of this latest application, Head of Imaging & Cytometry at the University of York, Dr Peter O’Toole describes ptychography as “one of the most important breakthroughs in imaging. It addresses many of the fundamental problems inherent in current microscopy techniques.”

For more information on ptychography and the Phasefocus Virtual Lens, please visit the Phasefocus web site.

About Phasefocus

Phasefocus is a venture capital-backed spin-out company from the University of Sheffield founded in 2006. Its principal equity investors are Ombu Group and Fusion IP plc. In February 2013, the Company announced that it had entered into a Licencing Agreement with Gatan Inc., the world's leading manufacturer of instrumentation and software used to enhance and extend the operation and performance of electron microscopes.

A prototype “add-on” product for existing electron microscopes has already demonstrated an improvement in resolution of a factor of five over that available using the host instrument’s conventional electron optics.

Its products also include an optical microscope used for label-free time-lapse imaging of biological cells, and an Ophthalmic Lens Profiler that can measure soft contact lenses with unprecedented levels of resolution and accuracy.

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