Materials

Material
Refractive Index
Specific Gravity, g/cm3
Abbe Value
Est. Thickness, mm
(-4.00 sph, 50 eyesize)
Plastic 1.5 1.31 59 5.6
1.56 1.23 37 4.7
1.6 1.30 41 4.5
1.67 1.37 32 4.1
1.70 1.41 36 4.0
1.74 1.47 33 3.9
Polycarbonate 1.59 1.20 30 4.5
Trivex 1.53 1.11 44 4.8
HiVex 1.56 1.25 46 4.7
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Materials