Optical System on NextSeq 500/550
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Light-emitting diode (LEDs) are used for excitation on the NextSeq 500/550, although laser diodes are still present for auto-focusing purposes.
Six cameras are used for capturing signal, and these are housed in independent imaging modules, which also contain the laser diode.
For additional information on the laser for EH&S (Environmental Health and Safety) purposes, review the Safety Compliance Guide.
For further information on swaths, tiles, cameras, and lanes, search for Knowledge Base article Chemistry and Imaging on NextSeq 500/550.
For any feedback or questions regarding this article (Illumina Knowledge Article #2076), contact Illumina Technical Support .