Available Technologies

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Passive multidirectional illumination in light-sheet flourecense microscopy


Light-sheet fluorescence microscopy enables rapid scanning of biological samples to reconstruct a 3-dimensional image of the sample. However, images generally contain artifacts (shadows, stripes, etc.) that are caused by illumination inhomogeneity due to absorption or scattering within the sample. These artifacts can occlude observation of biological phenomena in a sample. Moreover, current products use expensive and technologically demanding instrumentation to address these issues.


Researchers in Professor Douglas Durian’s laboratory in the University of Pennsylvania’s Department of Physics and Astronomy have developed methods to passively generate multidirectional illumination in a light-sheet imaging system using a light shaping diffuser. The outcomes include the elimination of optical artifacts, similar to those described above. An add-on device incorporating this method into an optical microscope would provide a cost-effective alternative to current prohibitively expensive stand-alone equipment. 


  • Cost-effective multidirectional illumination
  • Elimination of optical artifacts in light-sheet fluorescence microscopy
  • Add-on device compatible with commercial optical microscopes


  • 3-D light-sheet fluorescent imaging of biological samples (tissue or cells)
  • 3-D imaging of colloidal and granular materials for particle tracking (soil mechanics, flow behavior, and rheology)

Stage of Development:

  • Prototype
  • Proof-of-Concept Data Generated

Intellectual Property:

Provisional Pending

Reference Media:

Desired Partnerships:

  • License
  • Co-development

Patent Information:


Docket # 18-8462

For Information, Contact:

Qishui Chen Licensing Officer, SEAS/SAS Licensing Group
University of Pennsylvania