Focal Plane Array (FPA) detectors allow for the simultaneous acquisition of an n by n number of spatially resolved spectra, and each pixel provides an infrared spectrum. Thousands of spectra are simultaneously acquire within minutes. Each n by n image is called a tile.

Infrared images of large regions of interest can be performed by collecting many tiles of data and automatically stitching them together create a mosaic.

The Agilent is equipped with a 128 x 128 pixel FPA and the Bruker with a 64 x 64 pixel FPA