IdealPhotonics' beam profilometer, a focal plane analyzer, is a precision instrument specifically designed to measure the intensity distribution of a light spot at the focal plane of an optical system. By analyzing the morphology, size, and energy distribution of the focused light spot, it verifies the actual focusing performance of the optical system.Precisely locating the focal plane and quantitatively analyzing the limiting spot size and energy distribution directly characterizes the ultimate focusing capability of the optical system.