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　 General Conditions
　 1.523 Optical White Lens
　　Blank
　 1.7 Hi-index Lens Blank
　 Photochromic Grey Lens
　　Blank
　 Photochromic Brown Lens
　　Blank
　 1.523 Cruxite Lens Blank
　 Flint Button for Bifocal
　　Lens
　 Sunlens Blank (GG-15)
　 Mold Glass
 
  Flint Button for Bifocal Lens
 
Refraction index Nd=1.654
Density 3.85 g/cm3
Abbe value 37
Soft. Pt. 518
Ann. Pt. 480
Strain Pt. 454
Linear thermal expansion coefficient (20-300) 96.9x10-7 /
White round-shape flint buttons available
 
White Flint 1.654 Button USD/Pair
Code Dia.
(mm)		 Curve C. Thick.
(mm)		 Curv. Radius (mm) Price
CCX ( + ) CCV ( - ) CCX ( + ) CCV ( - )
F628000000035 28 0.00 0.00 3.5 0 0 0.140
F628000000040 28 0.00 0.00 4.0 0 0 0.160
F630000000035 30 0.00 0.00 3.5 0 0 0.160
F628000000040 30 0.00 0.00 4.0 0 0 0.180
F631000000035 33 0.00 0.00 3.5 0 0 0.180
F628000000040 33 0.00 0.00 4.0 0 0 0.210
 
Photochromic Flint 1.654 Button USD/Pair
Code Dia.
(mm)		 Curve C. Thick.
(mm)		 Curv. Radius (mm) Price
CCX ( + ) CCV ( - ) CCX ( + ) CCV ( - )
F830000000038 30 0.00 0.00 3.8 0 0 0.220
F835000000040 35 0.00 0.00 4.0 0 0 0.300
 
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