Optical Flats
Compare K9 GFH11/GFH12 and quartz GFH21/GFH22 optical flats, with single-sided and double-sided families. Start with the number of specified reference surfaces and the required aperture, then review the flatness and surface information listed for the model.
K9 Single-Sided Optical Flats — GFH11 Series
K9 Double-Sided Optical Flats — GFH12 Series
Quartz Single-Sided Optical Flats — GFH21 Series
Quartz Double-Sided Optical Flats — GFH22 Series
Choosing Optical Flats
- Choose a single-sided or double-sided flat according to which surfaces your measurement arrangement uses.
- Read the stated flatness with its reference wavelength and measurement convention where provided.
- Match usable aperture and thickness to the part under test and the support arrangement; request any required inspection documentation explicitly.