NU 2018-004
Inventors
Oliver Cossairt*
Fengqiang Li
Florian Willomitzer
Prassana V. Rangarajan
Short Description
A method to generate high modulation frequencies using optical superheterodyne interferometry.
Background
Time-of-flight (ToF) sensors are commonly used for 3D imaging due to their compact size and low complexity. However, the temporal frequencies that can be used restrict the depth resolution to centimeters. Interferometry uses higher frequencies to produce high range resolutions. The development of a system with better depth resolution can help reduce the gap in precision and sensitivity between optical interferometry and state of the art ToF sensors.
Abstract
The inventors have developed a Superheterodyne interferometry (SH-ToF) ranging device that utilizes optical superheterodyne interferometry to generate high modulation frequencies that allow flexibility in imaging range and a greater resolution. There are many industries that can benefit by implementing this technology. Military advancements, educational modeling, simulation in telemedicine are some of the potential applications. Market demand for improvements over existing devices continues to grow as consumers become increasingly familiar with 3D technology and virtual reality.
Applications
Advantages
Publications
Li F, Willomitzer F, Rangarajan P, Velten R, Gupta M and Cossairt O (2018) Micro Resolution Time-of-Flight Imaging. Imaging and Applied Optics.
IP Status
A provisional application has been filed.