The paper describes the design and construction of an improved form of cat's-eye retroreflector for use with a 3-D tracking laser interferometer. This reflector can accept an incoming interferometer beam within 60 deg of its main axis of symmetry and can provide a high-quality return beam at ranges up to 25 m.
Stephen A. Kyle,
"Improved reflector for interferometric tracking in three dimensions," Optical Engineering 34(9), (1 September 1995). http://dx.doi.org/10.1117/12.205679