ZHCSJA3B January 2019 – May 2022 DLP4500NIR
Figure 9-1 shows a typical embedded system application using the DLPC350 controller and DLP4500NIR DMD. In this configuration, the DLPC350 controller supports a 24-bit parallel RGB input from an external source or processor. In this system, the external processor controls the near-IR lamp and sends structured light patterns to the DLPC350. The near-IR radiation is projected through a liquid sample where the non-absorbed spectra is transmitted through an entrance slit and onto a diffraction grating. Diffracted light of varying wavelengths is then focused onto the DMD. The DLPC350 uses patterns to scan across the DMD thereby selecting specific wavelengths of light which are then focused onto a single point InGaAs detector. The external processor samples the outputs of the InGaAs detector to create an absorbance curve of the sample.