65m/m Large Field Rd. 22m/m Bi-focal

(Field Size is Larger than Lenticular)

 

Semi-Finished

Material: CR-39*

 

Base Curves:       14.00, 16.00, 18.00

                                    (58/65)  (52/65)  (48/65)

 

Half steps (.50) only in 14 Base curves and up

 

Additions: 1.00-20.00 in .50 steps only (ex. 2.00, 2.50, 3.00, 3.50)

 

(above 20.00 addition on quote)  

 

65m/m Extra Thick 15m/m Edge also available upon request

          2.00 Base Carrier               2.00 Base Carrier                 2.00 Base Carrier

                 14 Base                             16 Base                              18 Base

Material CR-39* Plastic                                                                        Specific Gravity 1:32

Index of Refraction: 1.498                                                                 Round 22m/m Bi-focal

Abbe Value: 58                                                                                         65m/m & 71 m/m

 

Note:**

 

Lens         Actual            Nominal    Actual          Back        Sag                                               Seg            Seg

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

 


Rd-22       58/65**          14.00        14.50              2.25     10.695        19.2            8.0              0.0

Rd-22       52/65**          16.00        16.50              2.25     13.307        18.2            8.0              0.0        5.5

Rd-22       46/65**          18.00        18.50              2.25     17.392        17.4            8.0              0.0        5.5

 

 

**Higher the base the smaller the field size