Pulse-modulated light source for psychometric and vision experiments

An inexpensive Arduino-based LED stimulator system for vision research

“…Light-emitting diodes (LEDs) have become more and more common as a low-cost and flexible way to provide light stimuli in vision research (Nygaard and Frumkes, 1982;Scholfield and Murdock, 1987;Watanabe et al, 1992;Pokorny et al, 2004;Fadda and Falsini, 1997;Demontis et al, 2005;da Silva Pinto et al, 2011;Rogers et al, 2012). LEDs offer easier and more versatile control of light characteristics (Schubert and Kim, 2005) compared to traditional light sources such as xenon, mercury, metal halide and halogen lamps which often require various auxiliary devices in experimental settings such as a set of filters for spectral tuning and shutters to control exposure duration.…”

iLIF: illumination by Laser-Induced Fluorescence for single flash imaging on a nanoseconds timescale

“…There are, for example, affordable solutions with high-intensity LEDs (Vasiliev et al 2000;Scholfield and Murdock 1987;Lubsandorzhiev et al 2009), which can deliver up to 10 12 photons per flash of 2 ns, thus close to 1 lJ per flash. A comparable, but more expensive solution, is using high-intensity spark plugs (Miyashiro and Grönig 1985;High Speed Photo Systeme).…”

Air entrapment and drop formation in piezo inkjet printing

“…There are, for example, affordable solutions with high intensity LEDs [62][63][64], or high intensity spark plugs [65,66]. However, when it comes to emitting ultrashort 1 high intensity light flashes, a pulsed laser is clearly the most effective.…”