Optics   

TOPAS^® COC, a high-performance amorphous ethylene copolymer, is in many ways the closest polymer to glass for advanced optical applications:    

The light transmission of TOPAS is among the highest of all polymers:       

TOPAS delivers excellent clarity, birefringence and other key properties for technical applications:     

TOPAS exhibits refractive index stability across wavelengths and temperatures.
Data for TOPAS 5013:      

Refractive index data for several TOPAS grades:      

For more information on TOPAS for Optics, see our Optical Brochure.