) is frequently used as a low-index material in high-damage-threshold mirrors and cladding for waveguides. Its refractive index is approximately .
The request for "ELECTRONIC MIRRORS 1.46" likely refers to a specific technical metric or a version of digital mirror technology, typically found in for vehicles or high-precision optical engineering. Based on current research and technology trends as of April 2026, 46" relates to electronic mirror systems. Electronic Side-View Mirrors (CMS) ELECTRONIC MIRRORS 1.46
: These systems significantly reduce blind spots. They can decrease the direct visual obstacle angle on the driver's side by roughly 40% and on the passenger side by nearly 50% . ) is frequently used as a low-index material