What Is a Powell Lens?

A Powell lens is a precision aspheric optic designed for laser line beam shaping. Its aspheric profile expands a collimated Gaussian beam into a fan-angle line and redistributes energy for more uniform intensity along the line.

Unlike a simple cylindrical lens that mainly focuses or expands in one direction, a Powell lens both forms a line and improves uniformity — making it ideal where line quality and stability matter.

Performance depends on wavelength, 1/e² input spot diameter, fan angle, materials, and optical design. Widely used in machine vision, 3D profiling, structured light, PCB inspection, industrial positioning, surface inspection, and precision automated measurement.