Perpendicular bond faces don’t always fit inside a Ø5mm cure spot. The Incure LGT-90-8 extends right-angle lightguide redirection to the larger joints a narrower terminator would need multiple passes to cover.

Scaling Perpendicular Access to Larger Bond Faces

The LGT-90-5 solves the fixed-axis perpendicular access problem at a Ø5mm aperture — precise, but limited to bond faces that fit inside that cure window. Wide PCB edge connectors, broad side-wall flanges, and larger vertical housing joints exceed that window, forcing repositioning across a wider face even with the redirect problem already solved.

The LGT-90-8 mounts onto the tip of any Ø8mm UV spot curing lightguide and redirects output the same full 90°, but through a proportionally wider aperture. On bond joints that would take the LGT-90-5 multiple spot passes to fully cure, the LGT-90-8 covers the same area in one — the perpendicular-access problem and the wide-bond-face problem solved together rather than sequentially.

That combination matters most on assemblies where the bond face is both perpendicular to the lightguide’s natural approach and wider than a Ø5mm cure spot — a housing side wall with a broad flange, for instance, where neither constraint alone would justify a specialized terminator, but the two together make a straight lightguide or a narrower terminator impractical.

No Adapter at the Ø8mm Port

Stepping a Ø5mm terminator down onto a Ø8mm lightguide port introduces a coupling interface that wastes UV energy before it ever reaches the redirecting element. The LGT-90-8’s aperture matches the Ø8mm core directly — full throughput at the tip, no adapter, no energy loss at the connection. For a facility already running Ø8mm lightguide systems, most directly the Incure LLG-1P-8, mounting the LGT-90-8 requires no hardware changes elsewhere in the setup.

Email Us if wide perpendicular bond faces are currently requiring multiple spot passes with a narrower-aperture terminator.

One Redirect, No Reorientation, Full Coverage

The core value proposition carries over directly from the Ø5mm configuration: on semi-automated or robotic lines where the lightguide approach direction is fixed, a right-angle terminator eliminates the part-reorientation step that a straight lightguide would otherwise require for perpendicular bond faces. The LGT-90-8 adds coverage area to that same elimination — a single trigger cycle now covers a wider vertical bond face without either repositioning the part or making a second pass across the joint.

The aluminum body carries a continuous high-intensity UV exposure rating, sized for the same duty cycle expectations as the rest of the LGT-Series, and mounts and detaches from the lightguide tip without tools — a relevant detail on lines that alternate between straight-line and redirected cure jobs on the same station rather than running one fixed configuration indefinitely.

Application Fit

Wide PCB edge bonds, broad side-wall connector bonding, and housing flanges cover electronics assembly at scale. Wide-aperture prism bonding and broad lens-edge joints fit optical assembly work where the bond footprint itself is larger than a Ø5mm system handles cleanly. Wide sensor housing seals, broad vertical gasket faces, and large door-assembly bond lines round out industrial and automotive use, consistently defined by bond faces too wide for a Ø5mm cure spot to cover in one pass.

On fixed-axis automated lines specifically, solving both the perpendicular-access problem and the wide-bond-face problem with one accessory avoids compounding two separate process risks: a robot programmed to make multiple passes across a wide vertical face carries the added risk of positioning drift between passes on top of the risk a fixed approach angle already introduces. Covering the full bond face in a single exposure removes that second risk layer entirely, not just the added cycle time.

Matching Aperture and Angle to the Fixture

Confirm lightguide exit port diameter before ordering — an aperture mismatch at the connection interface causes UV energy loss regardless of how well the exit angle matches the bond geometry. For precision perpendicular access on a narrower Ø5mm system, the LGT-90-5 is the better match rather than adapting a Ø8mm terminator down. For oblique 60° access at the same Ø8mm aperture — useful where fixture clearance doesn’t permit a full 90° approach — the LGT-60-8 covers the same wide bond faces at a shallower angle that fits through more constrained approach envelopes.

Across the full LGT-Series, the selection logic stays consistent: match the terminator’s aperture to the lightguide already installed, then pick exit angle based on the bond face’s actual orientation and whatever clearance the fixture provides. See the complete LGT-Series lightguide terminators overview for a full comparison across all four configurations, and Incure’s broader lightguide selection guide for the curing setup as a whole. Anyone loading, unloading, or servicing an Ø8mm terminator-equipped station should also confirm their Vison UV-blocking eyewear covers the wavelength of the lamp driving the lightguide. Contact Our Team to work through terminator selection for a specific fixture and bond geometry.

Visit www.incurelab.com for more information.