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In the development of high-end optical systems, a core question frequently arises: How to accurately evaluate the imaging quality of a system? Currently, the two most commonly used methods are: ◆ Wavefront testing ◆ MTF (Modulation Transfer Function) testing Both can evaluate system performance, but their focuses are completely different. Simply put: Wavefront testing identifies "where the system has problems"; MTF testing assesses "the quality of the final image." Understanding the differences between the two is crucial for choosing the correct testing method.

CGH Selection Software Usage Case Study

Feeling lost when you get a cylindrical lens drawing? Don't panic! This tool will automatically match the CGH model for you in 10 seconds!

In the field of precision optical manufacturing, even the slightest error can lead to disastrous consequences. We relentlessly pursue nanometer-level precision every day. But in the machining of aspherical or freeform surfaces, have you ever encountered this dilemma: despite using extremely precise polishing machines and repeatedly optimizing process parameters, the surface shape error remains stubbornly high? Even on some high-order curved surfaces, the more you polish, the more bizarre the shape becomes? The problem may not lie in your polishing process, but in your "eyes"—the inspection system. More precisely: have you rigorously corrected the distortion of the core component for aspherical zero-point testing—the CGH (Computer Hologram)? If this step is neglected, the inspection data itself is skewed, and subsequent precision machining will naturally continue to "go astray."

How can you measure what you can't see? Zhixing Optics' dual-wavelength CGH solution not only illuminates the infrared "visual blind spot," but also deeply evaluates the impact of material properties on high-reliability loads through transmission wavefront detection.

In the landscape of modern precision optical manufacturing, cylindrical lenses play a crucial role. From cutting-edge laser shaping in laboratories to LiDAR in industrial production lines, from barcode scanning equipment to high-precision semiconductor wafer inspection systems, cylindrical lenses, with their unique "one-dimensional focusing" characteristics, have become core components for shaping coherent light sources and correcting light spot shapes. It can be said that the precision of a cylindrical lens directly determines the "vision" of high-end equipment. However, how to accurately measure this "ruler" has long been a difficult problem for optical engineers.