Ft-uvpass

Blocking is measured in Optical Density. For UVPASS applications, you generally need (99.99% blocking) in the visible spectrum (400nm-700nm). High-end scientific FT-UVPASS filters achieve OD > 6 for laser-induced fluorescence (LIF) applications where stray visible light would overwhelm the UV signal.

The bundle's ability to create 3D masks from position passes allows for highly accurate color grading and特效 isolation that 2D masks cannot achieve. Technical Workflow: Getting the Best Results ft-uvpass

| Feature | Standard Colored Glass (e.g., Wood's Glass) | FT-UVPASS (Hard Coated) | | :--- | :--- | :--- | | | Bulk absorption glass | Dielectric interference layers on fused silica | | UV Transmission | ~30-50% (peak) | >85-90% (peak) | | Out-of-Band Blocking | Poor (visible red leak common) | Excellent (OD4 to OD6 blocking) | | Durability | Susceptible to solarization (bleaching) | High stability, resistant to solarization | | Temperature Stability | Moderate | High | Blocking is measured in Optical Density

The "FT" in FT-UVPASS implies a sophisticated manufacturing process. Unlike absorption filters that rely on chemical doping, FT filters use . The bundle's ability to create 3D masks from

This article provides an exhaustive deep dive into FT-UVPASS: its definition, manufacturing process, spectral characteristics, ideal use cases, and how to select the right filter for your high-precision application. By the end, you will understand why FT-UVPASS is not just a filter code, but a benchmark for reliability in the UV spectrum.