Luminys Systems Corp.

dedolight^®
.     Two Faces of Light
.     dedolight^® Technology
.          The Optical System
.          Low Voltage Lamps
.          The Lenses
.          The Mechanics
.          UV Radiation
.          The Imager Projection Attachment
.     LED Breakthrough
.     Introducing of focusing dedolight LED Fixtures

The original dedolight patent introduced a second lens which provides several advatages over traditional Fresnel systems:

Produces a unique character of light. Pre-collects the light from the lamp and reflector allowing the use of a smaller front lens and thus enabling the construction of a smaller light head.
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Provides light output comparable to much larger light sources.
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Raised the light efficiency in spot position to 18 % versus only 6 % found in traditional Fresnel designs.
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Provides a focusing range (change in intensity from flood to spot) of 25 : 1 versus the 3 : 1 range of similar lights.
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Provides a clean beam without stray light as usually found in Fresnel lights.
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Offers very even light distribution within the beam versus hot spots produced by Fresnel studio lights.