4 Inch Camera Vision Calibration Board, Microscope Lens Test Chart, Accuracy ±1.0um and 90% Light Transmission, For Studio Photography Inspection

【Precise Specifications】Measuring 100*100mm (equivalent to 3 round in 3x3in specifications) with a 43*43 array, 1mm dot diameter, and 2mm center distance, this calibration board fits various machine vision scenarios. 【High-Precision Calibration Standard】Utilizes an optical glass substrate and direct-write lithography to achieve calibration accuracy up to 1.0μm, meeting stringent requirements for micro- and nano-structure precision manufacturing. 【High Transmittance for Clear Imaging】Boasting up to 90% transmittance, this lens chart enhances image clarity and contrast significantly, reinforcing measurement accuracy and operational stability. It ensures precise optical performance, making it ideal for calibrating equipment requiring optical resolution in industrial setups. 【Uniform Coating for Minimal Deviation】The surface of this camera vision calibration board undergoes uniform spraying and chrome plating processes, effectively reducing geometric deviations and minimizing adverse impacts on camera calibration. As a professional scanner control sheet, it maintains consistency to support accurate lens and inspection tasks. 【Superior Flatness & Stability】Designed with high-standard flatness, providing a stable and reliable base for calibration procedures, which contributes to overall precision and repeatability.