Other Lens Materials

CR-607™ Monomer

CR-607 monomer, developed as a new substrate for TransitionsÒ lenses,  produces lenses with superior photochromic performance. CR-607 monomer was designed to give casters an easy replacement for CR-307 monomer.  Since CR-607 monomer has similar polymerization shrinkage and the same refractive index as CR-307 monomer, it should not require new molds.

CR-630™ Monomer

The casting of CR-630 monomer is virtually identical to the casting of CR-607 monomer with the exception of the initiator used. CR-607 monomer is used with 100% IPP, and CR-630 monomer has been specially formulated to be used with a pre-mix of 10% IPP in CR-39™ monomer

HIRI™  Resin

Lenses made from HIRI casting resin are both thinner and lighter than those made of conventional plastic or glass because of the resins higher refractive index (1.56) and lighter weight.   Properly fabricated lenses made from HIRI resin are optically uniform, with no waves or inclusions,  and they give less chromatic aberration than polycarbonate lenses.  Although designed primarily as a lighter and easier-to-cast and high-refractive index alternative to CR-39 monomer, HIRI resin may be used in any application that requires a versatile, easily processed thermosetting resin.

 CR-424™ UV Curable Monomer

Lenses made from CR-424 monomer act as the substrate for manufacturing mid-index Transitions lenses. With a refractive index of 1.554 and a density of 1.20, lenses made from CR-424 monomer are thin and light in addition to being photochromic.

CR-27™ Premix

CR-27 is an initiator premix mixture of 27% Di-isopropyl Peroxydicarbonate (IPP) and 73% CR-39 (Diethylene Glycol Bisallyl Carbonate).