Hollow Corner Cube Retroreflectors

Custom hollow corner cube retroreflectors for parallel optical beam return without solid-glass transmission.

Product Overview

A hollow corner cube retroreflector has three mutually perpendicular reflective faces arranged around an open optical cavity.

Three successive reflections return the beam in a direction parallel and opposite to the incident beam, without transmission through a solid prism.

Aperture, overall dimensions, substrate material, dihedral-angle tolerances, reflected wavefront requirements, and reflective coatings can be specified for the intended optical layout.

Applications

  • FTIR Spectrometers: Returns light through an interferometer arm while reducing sensitivity to small angular changes of the moving reflector.
  • Laser Tracking Systems: Acts as the optical return element in a suitable target assembly for distance and position measurement.
  • Open-Path Gas Analyzers: Returns a transmitted beam across the measurement path so the analyzer can measure gas absorption.
  • Optical Delay Lines: Returns the beam from a translating stage to vary optical path length while preserving the return direction.