Kugira ngo ubushyuhe bube bwiza cyane, iyi lenzi yakozwe hakoreshejwe ikirahure cya Chalcogenide cyakozwe neza (aho kuba Germanium isanzwe). Ubushyuhe bwihariye bwa refractive index (dn/dt) cy'ikirahure cya Chalcogenide, hamwe n'igishushanyo mbonera cy'ikoranabuhanga, bigabanya ubushyuhe mu buryo bwikora. Ibi byemeza ko akantu kanini ka F1.0 gatanga amashusho meza kandi ashyushye cyane mu gihe cy'ubukonje bukabije cyangwa ubushyuhe bwinshi, kuva kuri -40°C kugeza kuri +80°C.
Ubunini bw'amatara bwibanze ku gutanga ibikoresho by'ikoranabuhanga bigezweho mu gihe cy'imyaka 20