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Hi Index 1.74 -> G74
REFRACTIVE INDEX
1.74
ABBE VALUE
33
SPECIFIC GRAVITY
1.46
SPHERICAL
SEMI-FINISHED G74 | DIAMETER 65/70/75mm
BASE
65
11.50 12.50
70
0.50 1.50 2.25 8.50 10.25
75
3.50 5.00 6.75
ASPHERICAL
FINISHED G74 | DIAMETER 70/75mm
CYL
MINUS 70/75 mm
SPH
-1.00 to -12-00
Up to -2.00
MINUS 70 mm
SPH
-12.25 to -15.00
CYL
N/A
MINUS 70/75 mm CYL EXT
-1.00 to -10.00
SPH
CYL
-2.25 to -4.00
SEMI-FINISHED G74 | DIAMETER 70/75 mm
BASE
70
0.50 7.00 8.00 9.00 10.00
75
1.00 2.00 3.00 4.00 5.00 6.00
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