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

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

doi:10.1117/12.470596

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

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

Houston Methodist

Research output: Contribution to journal › Article › peer-review

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 language	English (US)
Pages (from-to)	205-212
Number of pages	8
Journal	Proceedings of SPIE-The International Society for Optical Engineering
Volume	4611
DOIs	https://doi.org/10.1117/12.470596
State	Published - 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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10.1117/12.470596

Cite this

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AU - Pasquali, Andrea

AU - Rovati, Luigi

AU - Ansari, Rafat R.

PY - 2002

Y1 - 2002

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AB - 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.

KW - Autofluorescence

KW - Dynamic light scattering

KW - Microcontroller

KW - Ophtalmic instruments

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JF - Proceedings of SPIE-The International Society for Optical Engineering

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

Abstract

Keywords

ASJC Scopus subject areas

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