Super Achromatic Waveplate can provides extremely flat phase delay in a large Wavelength broadband. The broadband of Quarter Waveplates are 325-1100nm or 600-2700nm, the Half Waveplates are 310-1100nm or 600-2700nm. The Super Achromatic Waveplate of standard adopt Glued strutures.We can customize phase retardation and wavelength according to customer’s requirment. Features： •Provide flat phase retardation in a large spectral range. Quarter wave plate,used for 325-1100nm or 600-2700nm Half wave plate,used for 325-1100nm or 600-2700nm •Glued strutures. •AR Coating on surface. •1 inch housing can be installed.