A robot’s approach axis and a bond face’s actual orientation don’t always line up — a fixture that holds the lightguide pointing straight down can’t cure a vertical side wall or the base of a recessed cavity, no matter how precisely the rest of the dispensing and fixturing process has already been dialed in. Incure’s LGT-Series™ solves that geometry problem at the tip rather than by repositioning the whole fixture: four terminator configurations that redirect the UV beam instead of asking the part or the robot to move.
Four Configurations, Two Variables
The LGT-Series™ splits along exit angle and aperture size. LGT-90-5 and LGT-90-8 redirect UV light at a full 90° to the lightguide axis, suited to bond faces genuinely perpendicular to the approach direction — vertical assembly surfaces, housing side walls, PCB edge joints. LGT-60-5 and LGT-60-8 direct output at an oblique 60°, built for recessed bondlines and angled cavities where a full right angle can’t physically be achieved due to surrounding fixture geometry. The second variable, aperture, comes in Ø5mm and Ø8mm to match the core diameter of the lightguide feeding it — Ø5mm for precision spot delivery on small joints, Ø8mm for a wider spot on larger bond areas needing more total UV energy at the surface.
Aperture Has to Match the Lightguide Core, Not Just the Job
Choosing between Ø5mm and Ø8mm isn’t purely about spot size at the part — it’s first a compatibility question. A terminator aperture wider than the lightguide’s actual core diameter doesn’t gain usable spot size; it just adds an unnecessary transition at the tip. Matching the terminator to the lightguide’s exit port diameter first, then evaluating whether that aperture’s resulting spot size suits the bond geometry, avoids installing a mismatched terminator that looks correct on paper. As a general rule, Ø5mm terminators suit precision spot delivery on small, tightly defined bond joints, while Ø8mm terminators trade some positional precision for a wider spot and higher total UV energy throughput on larger bond areas — the right choice depends on which of those two priorities actually governs the specific joint.
Compatible With Incure’s Own Lightguide Lines
The LGT-Series™ is built around Incure’s LLG-1P-5 and LLG-1P-8 liquid lightguide cores — the same lightguide family used on Incure’s S20™ UV arc spot lamp — plus compatible LED fiber lightguide configurations such as those on the L9000™ spot lamp. Confirming the exact lightguide model already in use before ordering a terminator avoids a mismatch discovered only after the part arrives, since the aperture and lightguide core need to line up precisely rather than approximately.
Email Us with your lightguide model and the bond face’s angle relative to your fixture’s approach axis, and Incure’s engineers can confirm which LGT-Series™ configuration actually reaches it.
Aluminum Body, Rated for Continuous Duty
All four LGT-Series™ configurations use a precision-machined aluminum body rated for continuous high-intensity UV exposure in industrial and automated production environments — built to sit permanently on the lightguide tip through repeated cure cycles rather than as a temporary attachment swapped in and out per part. Aluminum’s combination of thermal conductivity and dimensional stability under sustained UV exposure keeps the redirected beam’s exit geometry consistent cycle after cycle, which matters more on a terminator than on most fixture hardware since any dimensional drift at the tip directly shifts where the cure spot actually lands on the part.
Where the LGT-Series™ Fits
Electronics assembly draws on the 90° configurations for bonding along PCB edges, connector side walls, and component housing flanges — surfaces a downward-facing lightguide simply can’t reach without a terminator redirecting the beam. Optical component bonding — prism and lens bonding inside enclosed mounts, fiber ferrule assembly, and alignment fixture curing — depends on reaching bond faces angled relative to the fixture’s optical axis, a pairing worth checking against Incure’s Optik™ optical adhesive grade guide when lightguide geometry and adhesive are being specified together. Automotive sensor assembly uses the terminators for bonding sensor housings and sealing connectors on vertical mounting flanges in body-shop sub-assembly operations, where the bond face orientation is fixed by the part rather than adjustable. Recessed and cavity bonding — curing at the base of deep channels or inside enclosed component housings — is the clearest case for the 60° configurations, where only an angled tip can physically position the UV exit point at the bondline at all. On robotic and automated lines, mounting a terminator on the end-effector decouples cure direction from the machine’s approach axis entirely, enabling multi-face curing on one part without repositioning it between cure steps — a capability that pairs naturally with the broader lightguide selection considerations covered in Incure’s industrial guide to light guide systems.
Contact Our Team to confirm the LGT-Series™ exit angle and aperture for your bond geometry.
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