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In optics, the flatness of glass is crucial because it affects how light is transmitted and reflected, which in turn influences the quality of the images produced. When using a camera filter, the presence of Newton's rings in the flatness testing can significantly degrade the actual image quality. Whether or not flatness can be maintained without the appearance of Newton's rings greatly affects the cost and quality of the product.
FAQ: I saw other manufacturers claim better reflectance. What's difference?
Marumi’s factory lab research demonstrates a consistent performance with an average reflectance of 0.18% across the visible spectrum (400-700nm). This isn't just a one-off peak performance but a steadfast guarantee across all wavelengths that matter.
