As vehicles in 2026 increasingly rely on camera based ADAS technology, the ability to quantify and control unwanted light has become essential to functional safety and system validation. Stray light, sometimes referred to as veiling glare or flare, acts as an invisible adversary, degrading image contrast, masking low-signal features, and introducing ambiguity into machine vision decision-making. This presentation will walk through the two complementary measurement methodologies that have become industry standards for quantifying stray light behavior across automotive optics: the Veiling Glare Index (VGI) and the Glare Spread Function (GSF). The reasons for performing these measurements, as well as conclusions that can be drawn from the measurement results, will also be discussed.
By engineers, for engineers: A technically grounded guide to the rapidly evolving in-cabin technology industry and companies.
