The document describes the differences between diode array detectors and CCD cameras, focusing on their output and signal collection methods. Diode array detectors are linear arrays made from a single strip of semiconductor and are cost-effective with similar spectral sensitivity, while CCDs are two-dimensional and read pixels sequentially, resulting in longer response times. Both technologies have unique advantages depending on application needs.

1. Describe a diode array detector and CCD camera. Differentiate between them in terms of the
output and how signal is collected.
Solution
diode array detector are linear array fabricated in single strip of semiconductor. They are used in
high level application and they are available in single or double array. typically diode array
detector cost less than CCD and have similar spectral senitivity in some range.
CCD means charge coupled device . these are also built in single semiconductor chip but they
are two dimensional. here pixels are read out sequentially. down side is CCD have long response
time than diode array.