Source: wikibot/liquid-crystal-tunable-filter
= Liquid crystal tunable filter
{wiki=Liquid_crystal_tunable_filter}
A Liquid Crystal Tunable Filter (LCTF) is an optical device that uses liquid crystal technology to selectively transmit light at specific wavelengths while blocking others. Unlike traditional optical filters, which are fixed and only allow certain wavelengths to pass through, LCTFs can be dynamically adjusted to change their transmission characteristics.