Quasi-retroreflection from corner cubes with refractive free-form surfaces

Abstract

Quasi-retroreflection from corner-cube structures with a refractive free-form surface is studied. It is shown that adjustment of the structural parameters of the free-form surface allows control of quasi-retroreflection. Quasi-retroreflection corner-cube array sheets with specified quasi-retroreflection angle are modeled, and their quasi-retroreflection characteristics are analyzed.

Flexible corner cube retroreflector array for temperature and strain sensing

“… 24 – 26 The OPC property of CCRs have applications in optical interferometry, tomography, near-field microscopy, sensing, wavefront reconstruction and corrections. 15 , 16 , 19 , 25 , 27 Although perfect CCRs are always desired to produce retroreflection light, 28 imperfect CCRs also have practical applications in traffic signals or car lights. 21 , 29 Imperfect CCR produces quasi-retroreflected light formed through intentionally introduced artifacts or structural imperfections during their fabrication process.…”

“… 21 , 29 Imperfect CCR produces quasi-retroreflected light formed through intentionally introduced artifacts or structural imperfections during their fabrication process. 28 CCR fabrication is based on a range of methods including microelectromechanical methods, nanoimprinting, lithography, and direct laser writing. 30 – 32 CCRs have also been fabricated through mask-based direct etching methods, diamond micromachining, and laser ablation techniques.…”

Phase-conjugated directional diffraction from a retroreflector array hologram

“…Imperfect retroreectors are also important because of their use in practical applications, such as in traffic signals/car lights etc. 7,12 Due to the inability of a perfect CCR to show quasi-retroreection properties, it is not very useful for traffic signaling. Therefore, quasi-retroreection is ensured by intentionally introduced artifacts or structural imperfections during their fabrication process.…”

“…Therefore, quasi-retroreection is ensured by intentionally introduced artifacts or structural imperfections during their fabrication process. 12 Range of different techniques are used to fabricate CCRs including microelectromechanical, lithography, and direct laser writing. [13][14][15] Diamond micro-maching was also used to directly cut 120 CCR faces for high retroreection.…”