Hkfgshop Light Round Camera Resolution Test Chart, 25.4Mm Camera Lens Resolution Calibration Board, Accuracy ±0.5Um, 90% Transmittance, Positive And Negative, For Scientific, Negative

HKFGSHOP

NANOMETER-LEVEL PRECISION: Manufactured via high-precision direct-write lithography with ±0.5µm accuracy. This advanced process delivers nanometer-grade pattern processing, perfectly meeting the rigorous demands of high-density, high-resolution micro-nano structure fabrication and calibration. SUPERIOR FLATNESS & CHROME COATING: Features a uniform spin-coated chrome layer on a high-flatness substrate. This design significantly reduces surface geometric deviations, ensuring your camera calibration remains stable, accurate, and free from distortion caused by surface irregularities. 90% HIGH LIGHT TRANSMITTANCE: Engineered for maximum optical clarity with 90% light transmittance. This high transmission rate boosts image contrast and sharpness, providing a superior signal-to-noise ratio for more reliable resolution testing and measurement accuracy. 0-7 GROUP RESOLUTION SCALE: Includes Groups 0 through 7 for comprehensive lens evaluation. This wide range allows you to test everything from basic focus and field curvature to extreme resolution limits and aliasing across the entire frame, making it ideal for scientific and industrial inspection. VERSATILE 25.4mm ROUND FORMAT: This compact 25.4mm (1 inch) round calibration board is designed for precision optical systems. Perfect for machine vision, microscope calibration, and research applications where space is limited but accuracy is non-negotiable.