Features

• It is a substrate made by polishing with high precision a material whose shape changes very little due to temperature change.
• It can be ***d for the original interferometer and the original Newton.
• Optical flats are attached with interferometric surface accuracy inspection data.
• You can select the necessary optical flat from among the variations which are subdivided by size and various surface accuracy.
• Large optical flats with high surface accuracy *** materials with lower thermal expansion than synthetic quartz.
• The face indicated by the side arrow is a highly polished face.
• Optical flats are delivered in a storage case.
• Xerodua (R) is a registered trademark of SCHOTT AG.
• CLEARCERAM (R) is a registered trademark of O'Hara Co., Ltd.
• Wedge boards (WSB/WSSQ/WSSQK) are also available to prevent backside reflections.
• Newtonian rings are rainbow-colored stripes formed when an optical flat is brought into close contact with a specimen. The shape and number of these stripes can be ***d to infer the surface shape of the specimen.
• * When ***d as a Newton master, the sample may be damaged due to contact with the master.
• * Use a laser interferometer or the like to inspect items that cannot be scratched.
• * The number of fringes in the Newton ring is about twice the PV value of the interferometer analysis result.
• * Optical flats are not coated to maintain surface accuracy.
• * The surface accuracy of the optical flat may deteriorate if there are cracks or scratches on the edges.
• * If there are cracks or mold, please replace it with a new one.