Quantaflex EL^TM  Design Guide

Photometric Characteristics

Available Colors - What determines the Color of an EL Lamp?

What determines the Color of an EL Lamp?

The type of Phosphor used.

Each phosphor particle is a semi-conductor comprised of a “doped” Zinc Sulfide crystal.

The type and concentration of dopant in the crystal determined the wavelength of the emitted photons.

There are numerous different phosphors utilized to manufacture Quantaflex TM lamps, each one having its own unique spectral output.

The frequency of the AC signal applied.

As the frequency of the applied power is increased, the frequency of the light emitted is also slightly increased (blue shift).

The extent to which the spectral output is effected by the input is dependent upon the type of phosphor used. Some phosphors are dramatically effected, others only minimally. See Photometric Data for data on specific colors.

The addition of Fluorescent Conversion Dyes and Pigments to the Phosphor Layer or the addition of Conversion Dyes or Filters to the front of the lamp.

This method is used to produce “Dye Conversion White” colors. There are no commercially available phosphors which efficiently produce light in the red-orange-yellow spectrum. Therefore, fluorescent conversion dyes are often used to produce the red and yellow components necessary to produce various shades of white light. These red and yellow fluorescent dyes and pigments can absorb some of the green and blue light produced by phosphors which are efficient in this range and re-emit the light in the Red-Yellow spectrum. The choice of dye and its concentration will determine the shade of white produced. Because some of the energy is lost in this color conversion, the efficiency of dye conversion colors is generally less than those in the Aviation Green/Aviation Blue spectrum.

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