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.

Date Published: 13 June 2002
PDF: 8 pages
Proc. SPIE 4611, Ophthalmic Technologies XII, (13 June 2002); doi: 10.1117/12.470596

Published in SPIE Proceedings Vol. 4611:
Ophthalmic Technologies XII
Fabrice Manns; Per G. Soederberg; Arthur Ho, Editor(s)