Tese
Aplicação de LEDs na microscopia óptica ao diagnóstico da malária
Fecha
2016-07-29Autor
Oliveira, Cicero Hildenberg Lima de
Institución
Resumen
This work presents a study on the application of LED (Light Emitting Diode) to optical microscopy
in the diagnosis of malaria, in order to analyze the light emitted by the LED and
compare with the light produced by a halogen lamp. Throughout the work, a comparative
investigation between the light sources present in optical microscopy is presented. Two
lighting sources, Halogen lamp and cool white LEDs, are used. The variables that are
investigated are color rendering index (CRI), brightness and sharpness. Furthermore, a
discussion analyzing the obtained data considering the human eye sensitivity curve is performed.
The obtained results provide the background for the implementation of a RGBW
LED lamp to the microscope. The use of LEDs, compared to the halogen lamp, resulted in
energy consumption decrease, temperature reduction in the biological sample, and better
ergonomic conditions for the microscopists. The RGBW LED lamp yielded a colour variation,
improving the contrast and details of the analyzed samples, decreasing the analysis
time.