Optical grating

We can manufacture Ruled Gratings,Concave Gratings and Holographic Gratings. The specifications as follow seprately: 1)ruled area <=70mm Wavelength Range0.2-0.8μm Grooves Per mm1200L/mm-3600L/mm Diffraction>70% Ruled Gratings 2)Specifications: Ruled area<=70*70mm Wavelength Range 0.2-15μm Grooves Per mm50L/mm- 2400L/mmDiffraction>70% 3)Concave Gratings Specifications: Ruled area<=70*70mm Wavelength Range200-900μm Grooves Per mm490L/mm-1200L/mm Diffraction>70%