Spectacle lo ntsiab muag ntau lawm units uas hloov cov lo ntsiab muag semi-tiav rau hauv cov lo ntsiab muag tiav raws li cov yam ntxwv ntawm cov tshuaj.
Kev ua haujlwm kho kom haum ntawm lub chaw soj nstuam tso cai rau peb muab ntau qhov sib txawv ntawm kev sib txuas kho qhov muag rau cov neeg siv xav tau, tshwj xeeb tshaj yog hais txog kev kho tus mob presbyopia. Laboratories yog lub luag hauj lwm rau surfacing (sib tsoo thiab polishing) thiab txheej (xim, anti-scratch, anti-reflective, anti-smudge thiab lwm yam) lub lo ntsiab muag.
Refractive Index 1.60
Qhov zoo tshaj plaws sib npaug siab cov khoom siv lens nrog qhov loj tshaj plaws ntawm cov khoom siv lens refractive 1.60
kev ua lag luam. MR-8 yog haum rau txhua lub zog ophthalmic lens thiab yog tus qauv tshiab hauv cov khoom siv lens ophthalmic.
Kev sib piv ntawm thickness ntawm 1.60 MR-8 lo ntsiab muag thiab 1.50 CR-39 lo ntsiab muag (-6.00D)
MR-8 | Polycarbonate | Acrylic | Qauv: CR-39 | Yas iav | |||||||||||
Refractive Index | 1.60 ib | 1.59 ib | 1.60 ib | 1.50 ib | 1.52 ib | ||||||||||
Abbe tus lej | 41 | 28-30 Nws | 32 | 58 | 59 |
· Ob qhov siab refractive index thiab siab Abbe tus lej muab kev ua haujlwm kho qhov muag zoo ib yam li iav lo ntsiab muag.
· Cov khoom siv high Abbe xws li MR-8 txo cov nyhuv prism (chromatic aberration) ntawm lo ntsiab muag thiab muab kev siv zoo rau txhua tus neeg hnav.
MR-8 resin yog uniformly polymerized nyob rau hauv lub iav pwm. Piv rau txhaj tshuaj molded polycarbonate lo ntsiab muag,
MR-8 resin lo ntsiab muag qhia qhov kev nyuab siab tsawg kawg nkaus thiab muaj kev ntxhov siab tsis pom kev pom tseeb.
Kev soj ntsuam kev ntxhov siab