Reaching four bond points with single-pole lightguides means reaching for four lamps, four controllers, and four trigger sequences. The Incure LLG-4P-3 reaches the same four points from one.

Maximum Bond Count From a Single Controller

The LLG-4P-3 is the highest bond-point count in the entire LLG range — four cure points delivered in one machine cycle from a single lamp controller. Covering four joints with single-pole guides instead would require four separate lamps and four separate light sources, each with its own trigger infrastructure. The LLG-4P-3 completes the same work with one: no additional lamp controllers, no additional light sources, and no additional trigger wiring. Adding lamp hardware to reach four bond points is the expensive path; using one lamp with a quad-pole guide is the direct one.

That consolidation also simplifies maintenance and spares planning: one lamp controller to service, one set of consumables to stock, and one transmittance baseline to track rather than four independent systems each accumulating their own maintenance history and replacement schedule.

Eliminating Accumulated Dose Variation Across Four Bonds

Sequential single-pole curing on a four-joint assembly compounds dose variation the way it does on smaller multi-joint assemblies — but with four bonds in the sequence instead of two or three, the gap between the first joint cured and the last has more opportunity to widen. Lamp temperature drift, shutter timing inconsistency, and operator handling differences over a four-step sequence can all contribute to the fourth bond receiving a meaningfully different dose than the first.

The LLG-4P-3 eliminates that source of variation entirely: all four bonds are exposed at the same moment, from the same lamp output state, for the same duration. The four joints are dose-matched by construction. That kind of built-in uniformity has direct value for process validation documentation on precision optical and multi-point structural assembly lines, where demonstrating consistent dose across every bond on a part is often a requirement rather than a nice-to-have.

Email Us if a four-joint assembly currently runs through four separate single-pole cure cycles and needs dose consistency across all four bonds.

Precision Per Pole, Extended Reach

Each of the four output poles carries the same 3 mm core used across the single-pole and multi-pole LLG-3 series, keeping irradiation confined to each individual bond zone — a real consideration on dense four-joint assemblies where adjacent components sit close together. Total UV transmission runs up to 5 W split across all four poles, spanning 300 nm through the visible range. Available cable lengths run 1,000 mm, 1,500 mm, and 2,000 mm — the longest maximum length available for any multi-pole LLG configuration, accommodating four-station fixtures where the bond points are spread across a larger fixture envelope than a two- or three-pole setup would need to cover.

The guide is compatible with mercury arc, xenon, and halogen spot curing lamps, consistent with the rest of the LLG range, and is not compatible with UV LED sources.

Application Fit

The LLG-4P-3 is the correct choice specifically for assemblies with exactly four bond points that would otherwise require four sequential or four-lamp cure setups — multi-port housings, four-point structural bonds, and complex assemblies with four discrete seal or bond locations. As with the other multi-pole configurations, the throughput and dose-uniformity gains scale with cycle volume, making the case strongest on high-volume production lines rather than low-volume or prototype work.

Facility footprint is a secondary but real consideration at four bond points: four independent single-pole lamp-and-controller stations occupy meaningfully more floor space and require four separate power and trigger connections than a single quad-pole controller feeding one four-way lightguide. On crowded assembly cells where station real estate is already tight, consolidating to one controller can free up space that four separate single-point stations would otherwise consume. Operating temperature is rated −5°C to +35°C, consistent across the LLG range.

Choosing Bond-Point Count and Reach

For fewer simultaneous points, the bifurcated LLG-2P-3 and trifurcated LLG-3P-3 cover two and three bond points respectively, both with somewhat shorter maximum cable lengths than the quad-pole configuration. For single-point curing with maximum intensity or the longest reach in the LLG line, the single-pole LLG-1P-3, LLG-1P-5, and LLG-1P-8 span 3 mm to 8 mm cores and up to 6,200 mm of cable — but none of them cure more than one point per cycle.

For UV LED multi-pole spot curing with longer cable lengths, the Incure L9000 lightguide system supports up to four lightguides from a single controller at cable lengths of 2,000 mm to 5,000 mm — worth considering if the project needs LED sources rather than arc-based ones. See the full lightguide selection guide for the complete range comparison, the Incure S20 arc spot lamp as the typical mercury-arc source for this configuration, and the LS217 lightguide simulator for monitoring transmittance across all four poles over the guide’s service life. Contact Our Team to evaluate a four-point simultaneous cure setup for your assembly.

Visit www.incurelab.com for more information.