Microcontroller-based front-end electronics for simultaneous measurements of dynamic light scattering and natural fluorescence

Luca Pollonini, Andrea Pasquali, Luigi Rovati, Rafat R. Ansari

Research output: Contribution to journalArticle

Abstract

A digital control unit for use with a new integrated instrument for dynamic light scattering and natural fluorescence measurements is presented. This unit, based on a microcontroller (Microchip PIC16F877), process signals from an optical head and controls instrument functions. The microcontroller internal counters are used to perform real-time photon counting measurement by processing the TTL signals obtained from the photodetectors. The new system provides reliable and simultaneous DLS and AF measurements from the same ocular volume located from the cornea to the retina.

Original languageEnglish (US)
Pages (from-to)205-212
Number of pages8
JournalProceedings of SPIE-The International Society for Optical Engineering
Volume4611
DOIs
StatePublished - Jan 1 2002

Keywords

  • Autofluorescence
  • Dynamic light scattering
  • Microcontroller
  • Ophtalmic instruments

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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