71m/m Regular (Spherical) Lenticular

Rd. 28m/m Bi-focal (50m/m Field) (Bowl)

 

Semi-Finished

Material: CR-39*

 

Field Size: 50m/m

 

Blank Size: 71m/m

 

Base Curves: 8.00, 10.00, 12.00, 14.00, 16.00

 

Additions: 1.00, 1.50, 2.00, 2.50, 3.00, 3.50, 4.00, 4.50, 5.00, 5.50, 6.00, 6.50, 7.00, 7.50, 8.00, 8.50, 9.00, 9.50, 10.00

(other additions quoted!)

 

 

Lens         Actual         Nominal      Actual             Back           Sag                                               Seg        Seg

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

Rd-28        71m/m                  8.00                *               2.25                                                                               

Rd-28        71m/m                10.00                *               2.25                                                                               

Rd-28        71m/m                12.00                *               2.25                                                                               

Rd-28        71m/m                14.00                *               2.25                                                                               

Rd-28        71m/m                16.00                *               2.25