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When it comes to diagnostics, one of the most crucial – and often overlooked – components is the optical filter. But as manufacturing processes improve, optical filters of exceptional quality are being created, which not only deliver accurate results but also open up an entirely new avenue of application in wearable diagnostics.
Optical filters are used to control the spectral content of a light beam, attenuate unwanted light and pass wanted light. Testing hemoglobin levels, monitoring blood glucose, detecting infectious diseases and cardiac and cancer markers require fluorescence, chemiluminescence, absorbance or Raman detection methods, all for which the optical filter is critical.