Hartmann wavefront sensor

A Hartmann wavefront sensor is a device used to analyze how light waves change as they pass through or reflect from an object or medium. It projects a grid or array of tiny, individual lenslets onto the wavefront. By measuring how each tiny beam of light is displaced, the sensor determines distortions or abnormalities in the wavefront’s shape. This information helps in correcting optical systems, improving imaging quality, or studying the surface shape of objects, especially in applications like astronomy, ophthalmology, and laser technology.