Polarization Coupling Cube-Corner Retro-ReflectorsTechnology #ua06-008
Questions about this technology? Ask a Technology Manager
Title: Polarization Coupling Cube-Corner Retro-Reflectors
Invention: This technology is a cube corner retro-reflector that includes three mutually perpendicular reflecting planes arranged in a pyramidal configuration. At least one of the reflecting planes has a non-isotropic surface, causing a polarization state of a ray exiting the cube corner retro-reflector to be orthogonal or substantively orthogonal to a polarization state of a ray entering the cube corner retro-reflector for all linear polarization orientations. The retro-reflected light is close to 100% as a result.
Background: Most retro-reflectors lose approximately 75% of the incident light or are complex. Polarization coupling has rarely exceeded 80%. For a lower power, less complex system, that more efficiently delivers light to the detector, a new design is needed for retro-reflectors.
• Automotive stamping, body, paint, and assembly
• Manufacturing line quality control
• Laser range finding and satellite tracking
• Free-space optical telecommunications
• Allows nearly 100% of retro-reflected light to hit detector without a quarter-wave plate
• Returned polarization state orthogonal to incident state
• Can use lower light power compared to conventional retro-reflector systems
Amy Phillips; AmyP@tla.arizona.edu
Refer to Case Number UA06-008