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When choosing a lightguide for your system, the following factors should be considered:
Length - Lightguides are commonly one meter long although other lengths are available.
Diameter - Single-pole lightguides are available with 3 mm, 5 mm, or 8 mm inside diameters. Although the 5 mm lightguide will register a higher intensity, the 8 mm lightguide provides more curing power (intensity x area) because a larger lightguide opening captures more of the light emitted from the bulb. Each pole of a multi-pole lightguide has an inside diameter of 3 mm.
Multiple Poles - Light emitting from a spot lamp can be channeled through a single lightguide (single pole) or split between multiple lightguides (multiple poles). Each pole of a multi-pole lightguide emits equal intensity typically ±10% for liquid-filled lightguides and all share a common shutter. Both liquid-filled and quartz-fiber multi-pole lightguides are available from Dymax®.
Connection - There are basically two types of connectors used in the spot lamp industry, "Wolf" and "D" connectors. Dymax® provides lightguides with both connector types, although "D" connectors are an industry standard and compatible with current Dymax® lamp designs (older Dymax® designs utilized Wolf" connectors).
Curing Area/Intensity vs. Distance - The UV and visible light emitted from a lightguide diverges. As a result, intensity decreases and curing area increases with distance from the end of the light guide. The chart to the right describes this relationship clearly for the 5 mm liquid lightguide.
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