Sequential LED
Tail-Lighting Systems

Developed into a practical component
product in 1962 and first used as status
and indicator lamps, and more recently
in appliance and TV backlighting, high-
brightness LEDs have emerged in recent
years. But only recently have they been
seriously looked upon as a feasible option
in general purpose lighting applications
such as vehicle signal lights.

Light-emitting diodes (LEDs) are solid-state
devices that convert electric energy directly
into light of a single color. Because they
employ "cold" light generating technology,
in which most of the energy is delivered in
the visible spectrum, LEDs don't waste
energy in the form of non-light producing
heat. In comparison, most of the energy in
an incandescent lamp is in the infrared
(or non-visible) portion of the spectrum.
As a result, both fluorescent and HID lamps
produce a great deal of heat.

In addition to producing cold light, LEDs:

    Have a very fast "on-time" (60 nsec vs 10 msec for an incandescent lamp).
    Have good color resolution and present low, or no, shock hazard. 
    Are small in size and resistant to vibration and shock and can include a focusing lens.
    Can be integrated into a control system as in the Sweeplite.

The centerpiece of a typical LED is a diode that is chip-mounted in a reflector cup and held in place by a steel lead frame connected to a pair of electrical wires. The entire arrangement is then encapsulated in epoxy. The diode chip is generally about 0.25 mm square. When current flows across the junction of two different materials, light is produced from within the solid crystal chip. The shape, or width, of the emitted light beam is determined by a variety of factors: the shape of the reflector cup, the size of the LED chip, the shape of the epoxy lens and the distance between the LED chip and the epoxy lens. The composition of the materials determines the wavelength and color of light. The definition of "life" varies from industry to industry. The useful life for a semiconductor is defined as the calculated time for the light level to decline to 50% of its original value. For the lighting industry, the average life of a particular lamp type is the point where 50% of the lamps in a representative group have burned out. The life of an LED depends on its packaging configuration, drive current, and operating environment but is generally more that twenty times that of a standard incandescent lamp.



SWEEPLITE ® is a registered trademark of Syntilla Systems Inc. All website images, video and content is copyright Syntilla Systems Inc. ©  2011-2014 all rights are reserved.

Sweeplite is Patented Technology. Sweeplite Modules are made in the USA using domestic and internationally sourced components.

Vehicle Names and Models are the trademarks of their respective manufacturers and are for reference only.

LED Technology

Its Sequensational!