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Cylindrical mirrors are widely used in laser shaping, spectroscopic instruments, photolithography, and imaging optics. High-precision surface shape detection of cylindrical mirrors largely relies on cylindrical CGHs (computational holographic elements) for null-point interferometry detection. Cylindrical mirrors are divided into concave and convex types, and the selection constraints for CGHs differ between them. Incorrect selection can lead to problems such as incomplete wavefront coverage, inability to position the optical path, and failure to complete null-point detection. It can also directly result in incorrect CGH procurement, wasting time and money for the company. Today, we break down the complete selection logic for cylindrical CGHs to help you avoid common pitfalls.

Modern CGH Null Correctors provide a practical approach by combining computer-designed diffraction technology with precision optical manufacturing. They bridge the gap between theoretical optical design and real-world production inspection, allowing engineers to evaluate complex surfaces with greater confidence.

Peter Drucker, the father of modern management, famously said a business and engineering rule: "If you can't measure it, you can't improve it." In the field of precision optical manufacturing, this rule is equally cold and ruthless: in the aspherical surface processing industry, if you cannot perform precise and efficient metrology and measurement, you simply cannot quickly and effectively improve the aspherical surface processing technology.