array detector

in spectroscopy
https://doi.org/10.1351/goldbook.08226
Photoelectric detector in which a large number of pixels are distributed, usually in regularly spaced lines and usually over a rectangular area.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 652 [Terms] [Paper]