Optical Glasses
Type Thickness 400 420 450 540 600 640 680 700
(mm)  (nm) (nm) (nm) (nm) (nm) (nm) (nm) (nm)
QB1 2 ≥84.0 44.0~50.0 21.0~27.0 34.0~42.0
QB2 2 ≥84.0 22.0~36.0 10.0~21.0
QB3 2 ≥40.0 ≤0.4 ≤3.0
QB4 2 ≥66.7 ≤1.2 ≤19.7
QB5 2 ≥58.0 ≤5.0 ≤2.0
Type Thickness 400 480 640 680 700 1000
(mm)  (nm) (nm) (nm) (nm) (nm) (nm)
QB9 2 ≥10.0 ≥36.5 ≤1.0
QB10 2 ≥76.0 23.0~31.0 ≤5.0
QB11 2 ≥80.0 ≥83.8 5.5~11.6
QB12 2 ≥63.5 ≥76.4 ≤0.7
QB13 2 ≥20.0 ≥51.5 ≤0.2
Type Thickness 350 405 514 633 694 1060
(mm)  (nm) (nm) (nm) (nm) (nm) (nm)
BG39 2 ≥54.6 ≥77.4 ≥84.6 ≤27.3 ≤2.7 ≤0.09
BG38 2 ≥52.0 ≥79.6 ≥83.0 ≤41.50 ≤9.5 ≤0.3
Type Thickness 400 420 450 500 540 650 700 800 1000
(mm)  (nm) (nm) (nm) (nm) (nm) (nm) (nm) (nm) (nm)
QB16 2 ≥88.3     ≥87.9      64.9~72.8  33.3~48.1
QB17 2    ≥69.7           27.7~44.0  ≤10.1
QB18 2    ≥88.5  80.0~87.7    25.3~59.3   
QB19 2 ≥70.0           560≥10.0  620≤3.0 ≤13.0 
QB21 2  360≥50.0     ≥83.0   680≤4.5   
Type Thickness 320 334 350 405 480 600 633 694 750
(mm)  (nm) (nm) (nm) (nm) (nm) (nm) (nm) (nm) (nm)
QB23 2 ≤4.0 ≥60.3 ≤0.1 
QB24 2    ≤14.7    ≥68.0 ≤19.4 ≤0.1 ≤0.9 
QB26 2 ≥10.6 510≥70.9 633≤5.7 ≤5.7 ≤0.1
QB29 2 ≤23.0 380≥83.0 ≤22.0 ≤0.1 ≤14.7