A thin lens is an optical device characterized by a simple geometry, where the thickness of the lens is negligible compared to its radius of curvature. This idealized model simplifies the analysis of light propagation, allowing for straightforward calculations of image formation and lens behavior using various optical principles. Thin lenses are crucial in understanding how light converges or diverges, which ties into advanced concepts like beam propagation.
congrats on reading the definition of Thin lens. now let's actually learn it.