Comprehensive stray light (flare) testing: Lessons learned

Stray light (also called flare) can adversely affect the image quality or application performance of a camera system. Testing for stray is critical understanding limitations system performance. any that reaches detector (i.e., sensor) other than through designed optical path. Depending on mechanism causing light, it introduce false colors and phantom objects (ghosts) within scene, reduce contrast over portions (veiling glare), effectively dynamic range. In this paper, we present an overview testing digital systems, as well lessons learned various technical elements to consider. These include radiometric (e.g., brightness) geometric size) properties source test setup. We focus approach involves illuminating with small, bright describe how certain impact measurement.