Privacy Filter Louvre Angle Calculator

Size louvre geometry for privacy or driver-attention filters.

From a target half-angle, louvre pitch (slider 50–500 µm), and louvre opacity, computes louvre height = pitch / tan(half-angle), aspect ratio, on-axis transmission (1 − duty), and a qualitative cutoff sharpness (sharp / moderate / soft). Includes an SVG schematic of pitch and louvre height.