1.60 e bolela hore index ea refractive ea lense ke 1.60, e phahameng ea refractive index, e fokolang lense ea tekanyo e tšoanang.
MR-8 ke lense ea resin ea polyurethane.
1. Har'a lilense tsohle tsa 1.60, ts'ebetso ea eona ea optical e batla e le ntle haholo, 'me palo ea Abbe e ka fihla ho 42, e bolelang hore ho hlaka le botšepehi ba ho bona lintho li tla ba holimo;
2. Matla a eona a thata a ka fihla ho 80,5, e leng molemo ho feta lisebelisoa tse tloaelehileng tsa lense;
3. Ho hanyetsa mocheso oa eona ho ka fihla ho 100 ℃, ts'ebetso e batla e tsitsitse, karolo e boetse e batla e le tlaase.