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.
Microcontroller-based front-end electronics for simultaneous measurements of dynamic light scattering and natural fluorescence / Pollonini, L.; Pasquali, A.; Rovati, Luigi; Ansari, R. R.. - STAMPA. - 4611:(2002), pp. 205-212. ( 12th Conference on Ophthalmic Technologies SAN JOSE, CA JAN 19-20, 2002) [10.1117/12.470596].
Microcontroller-based front-end electronics for simultaneous measurements of dynamic light scattering and natural fluorescence
ROVATI, Luigi;
2002
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.
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