Key Benefits of LEP Lighting High Lumen Output
One of the key benefits of LEP over LED and HID is the ability to scale in lumen output without losing efficiency and
increasing system overhead like size and cost.
For example, in order to double the light output of an LED fixture, you need twice as many LEDs, optics, and driver.
This proves to be problematic: thermal cross-talk lowers efficiency of the individual LEDs, adding components drive up cost and compromises
system reliability, and luminary size increases proportionally
LEP sources, on the other hand, can double in light output by simply scaling the size of the bulb and using a higher power
amplifier which only marginally impacts system performance. In addition, the source size remains small compared to the illumination optics
and the emitter becomes more efficacious, giving you higher optical efficiency at high outputs
Light Distribution
The LEP emitter is constructed of a small electrode-less lamp encased by a ceramic resonator. This unique design produces light from
a very compact area in a forward direction into a lambertian pattern.
The quartz lamp acts as a point source due to its minimal size, providing many advantages in a luminaire’s optical performance. Smaller
sources inherently reduce the amount of optics needed to achieve the required level of glare cut off and illumination, while ensuring excellent
uniformity.
Natural Illumination
LEP’s plasma 'arc' directly emits a full-spectrum white light without the need for a secondary phosphor conversion such as
those used by LED or Induction sources. The natural illumination generated from the LEP source greatly enhances visibility and color appearance,
with a CRI up to 95.
The full-spectrum signature also provides increased pupil lumens (with S/P ratio of 2.4), greatly enhancing visibility at night,
when street and outdoor light is most needed. LEP’s natural illumination enables luminaries to create a safe, natural,
and inviting environment.
Light Efficacy
LEP’s source efficacy, lumens created per watt consumed, is 15-20% higher than an HID source, because no power is wasted
in heating electrodes. Plasma light source efficacy ranges from 115 to 150 LPW at operating temperatures.
LEP sources can be utilized to achieve application efficiency more effectively than HID, induction lighting or
LED because of its directionality and size. The directional source prevents light from being trapped inside a luminaire. Point source
optics effectively maps the source to the illuminated area, preventing unwanted light spill (a source for glare and light-pollution).
Extra Long Life
An LEP system for general lighting applications is rated for 70% lumen maintenance (L70) after 50,000 hours of use. Unlike
typical HID light sources, LEP sources do not need to be de-rated for the length of operating cycles |