Adjustable Hybrid Diffractive/Refractive Achromatic Lens

Case ID:

Researchers at the University of Arizona have designed an achromatic variable focus lens that can correct for Seidel Aberrations in addition to chromatic dispersion. The technology uses fluid pressure control to alter the curvature of clear membranes containing fluid in correlation with the wavelength and the desired focal length. Software enables the user to select two different fluids based on the desired Abbe number and index of refraction. The user then selects the desired focal length and the lens automatically changes the two radii of curvature to adjust the focal length. In this sense we have created a digital lens that gives the user full control of the achromatic lenses focal length while controlling aberrations. Coupling multiple digital lenses allows for the production of various designed systems such as variable magnification telescopes and microscopes, relay systems, or other designs, without moving parts.


  • High degree of variability
  • Corrects for Seidel aberrations
  • Achromatic

Status: issued US Patent #9,164,206

Patent Information:
Contact For More Information:
Richard Weite
Senior Licensing Manager, College of Optical Sciences
The University of Arizona
Lead Inventor(s):
Pouria Valley
Nasser Peyghambarian
Gholam Peyman
James Schwiegerling
Nickolaos Savidis
diffractive lens
liquid-crystal devices