65m/m or 71 m/m Upper & Lower Rd. 25m/m Bi-focals

Occupational 14m/m Separation

 

Semi-Finished:

Material: CR-39*

 

Base Curves:  *Plano, 2.00, 4.25, 6.25, 8.25, 10.25, *12.00   *(Plano and 12 Base only in 65m/m)

 

Additions:

            1.00, 1.25, 1.50, 1.75, 2.00, 2.25

            1.00, 1.25, 1.50, 1.75, 2.00, 2.25

 

            2.50, 2.75, 3.00, 3.25, 3.50, 3.75

            2.50, 2.75, 3.00, 3.25, 3.50, 3.75

 

.50 diopter less on top available in 65m/m and 71m/m blanks

 

Plano & 12.00 Base (65m/m only)

12.00 Base (Even adds top and bottom only)

10.25 Base - 71m/m (Even adds only)

 

Note: Other combinations and higher adds available (71m/m only).

 

65m/m blanks available in 15m/m Thick Edge and 22m/m Thick Edge

71m/m available in 12m/m Edge Thick

 

 

Material: CR-39*  Plastic                                                                        Specific Gravity: 1.32

Index of Refraction: 1.498                                                                       Occupational Round

Abbe Value: 58                                                                                 22m/m, 25m/m & 28m/m
                                                                                                      
65m/m & 71 m/m Blanks

 

                             Upper & Lower • Rd. 22, 25, 28m/m Bi-focals

                                                   14m/m Separation

 


Lens                 Actual    Nominal    Actual          Back        Sag                                               Seg                Seg

Style                 Size         Curve         Curve           Curve       50m/m     C.T.          E.T.           Inset             Drop

 


22/25/28         65m/m    Plano          0.00              2.25          0.00        12.3            4.3              4.0            7.0

22/25/28         65m/m       2.00          2.00              2.25        1.191        10.8          11.4              4.0            7.0

22/25/28         65m/m       4.25          4.25              6.25        2.573          9.4          10.4              4.0            7.0

22/25/28         65m/m       6.25          6.25              6.25        3.864          8.0            7.4              4.0            7.0

22/25/28         65m/m       8.25          8.25              6.25        5.240        10.5            7.8              4.0            7.0

22/25/28         65m/m    10.25        10.25              6.25        6.742        12.5            7.0              4.0            7.0

22/25/28         65m/m    12.00        12.00              6.25        8.207        15.4            7.2              4.0            7.0

22/25/28         71m/m       2.00          2.00              2.25        1.191        11.2          11.5              4.0            7.0

22/25/28         71 m/m      4.25          4.25              6.25        2.573          9.0          10.4              4.0            7.0

22/25/28         71 m/m      6.25          6.25              6.25        3.864          8.2            7.4              4.0            7.0

22/25/28         71 m/m      8.25          8.25              6.25        5.240        10.8            7.4              4.0            7.0

22/25/28         71 m/m   10.25        10.25              6.25