Light-emitting diodes (LEDs) are a solid-state light source being used in numerous
applications, including display, communications, medical services, etc. However, the …

Extending the lifetime of power light-emitting diodes (LEDs) is achievable if proper control
methods are implemented to reduce the side effects of an excessive junction temperature …

Light Emitting Diodes (LEDs) are the longest lasting source of artificial illumination whose
duration can exceed 50.000 continuous working hours. Nevertheless, they show a gradual …

Technological developments are now beginning to trend with the presence of smartphones.
Smartphones are phones that have high-level capabilities, and generally have functions like …

In this study, a temperature imaging method based on a magnetic nanoparticle thermometer
is proposed and evaluated. We first constructed a new model for finding the single …

The design of semiconductor-based photonic devices requires precise knowledge of the
refractive index of the optical materials, a not constant parameter over the operating …

Введение. Длительная работа светодиодных ламп может быть обеспечена за счет
соблюдения токового и температурного режимов работы светоизлучающего кристалла …

Measuring the actual junction temperature TJ of power light emitting diodes used in high-
end luminaires is important for implementing measures to reduce the stress and therefore …

A circuit is presented for the on-line measurement of the junction temperature (TJ) of power
LEDs. The circuit is integrated with, and makes use of, an off-the-shelf LED driver, so that the …

A free-space optical transmission system for applications that require a proper data
communication channel between docked microsatellite modules is presented. The structure …