Plane Ruled Diffraction Grating, 150 g/mm, 500 nm, 2.2°

Plane Ruled Diffraction Grating, 150 grooves per mm, 500 nm nominal blaze wavelength (1st order Littrow), 2.2° nominal blaze angle

Plane Ruled Diffraction Grating, 150 grooves per mm, 500 nm nominal blaze wavelength (1st order Littrow), 2.2° nominal blaze angle