Ukuze kufezekiswe uzinzo oluphezulu lobushushu, le lens yenziwe kusetyenziswa iChalcogenide Glass enokubumba ngendlela echanekileyo (endaweni yeGermanium yendabuko). I-coefficient yobushushu eyahlukileyo ye-refractive index (dn/dt) yeglasi yeChalcogenide, idibene noyilo oluphambili lwe-optical, ihlawulela i-thermal defocus ngokuzenzekelayo. Oku kuqinisekisa ukuba i-F1.0 large aperture inika imifanekiso ebukhali neguquguqukayo yobushushu xa kubanda kakhulu okanye kushushu, ukusuka kwi -40°C ukuya kwi +80°C.
Ubude be-wavelength bugxile ekuboneleleni ngeemveliso zokukhanya ezichanekileyo kakhulu kangangeminyaka engama-20