A narrow terminator spot forces repositioning the moment a bond joint is wider than the cure window it delivers. The Incure LGT-60-8 exists to remove that second pass on Ø8mm lightguide systems.
When One Pass Isn’t Enough
A Ø5mm terminator spot works cleanly on compact bond joints, but wider angled bond faces exceed that cure window — which means the operator or the automated fixture has to reposition the lightguide and cure the remaining area in a second pass. That adds cycle time on every part and introduces a seam between the two exposures where dose can vary.
The LGT-60-8 mounts onto the tip of any Ø8mm UV spot curing lightguide and redirects output at the same 60° oblique angle as its narrower sibling, but with a proportionally wider aperture. On angled bond joints that exceed a Ø5mm cure window, the wider spot covers the full bond face in one trigger cycle instead of two — eliminating the repositioning step for facilities already running Ø8mm lightguide systems rather than asking them to switch aperture sizes.
No Step-Down at the Ø8mm Port
Mounting a Ø5mm terminator on a Ø8mm lightguide port means running through a step-down adapter — and every adapter interface is a place where UV energy is lost before it reaches the redirecting element. The LGT-60-8’s aperture is sized to match the Ø8mm core exactly, with no step-down and no intermediate adapter. For a facility already standardized on Ø8mm lightguides, most commonly the Incure LLG-1P-8, that means mounting the terminator directly with full throughput preserved.
Email Us if a Ø5mm terminator is currently forcing multiple passes across a bond face that a wider aperture could cover in one.
Reaching Constrained Geometry at a Larger Scale
The oblique 60° exit angle serves the same purpose here as on the narrower LGT-60-5: reaching bond faces where a straight lightguide can’t physically enter and a 90° terminator doesn’t have the approach clearance it needs. The LGT-60-8 brings that same angled access to larger bond joints — wide angled bond faces, large recessed bondlines, and constrained fixtures sized for an Ø8mm lightguide rather than a Ø5mm one. Where the LGT-60-5 handles precision joints at a smaller scale, the LGT-60-8 handles the same geometric problem when the bond face itself is larger.
The aluminum body is rated for continuous high-intensity UV exposure, matching the duty cycle expectations of the Ø8mm lightguide systems it’s built to pair with.
Application Fit
Wide PCB bond joints at oblique angles, large slot-constrained housing bonds, and angled connector flanges cover the electronics assembly use case. Wide prism bonding at oblique approach angles and angled lens-edge joints with a larger bond footprint fit optical assembly work. And wide angled sensor housing seals, large recessed gasket faces, and wide slot-constrained bond lines round out general industrial and automotive applications — all cases where the bond face itself, not just its angle, is the limiting factor for a narrower terminator.
Multi-pass curing has a second cost beyond cycle time that’s easy to overlook: whatever fixturing or vision system indexes the lightguide between passes has to repeat that alignment accurately every cycle, and any drift in that repositioning shows up as a visible seam in cure quality at the boundary between the two exposures. Collapsing two passes into one with the LGT-60-8 removes that alignment-repeatability requirement from the process entirely, rather than just making it faster. That’s a meaningful distinction on lines where the seam itself, not just total cycle time, has caused rework or failed inspection.
Choosing the Right Aperture and Angle
Verify the lightguide’s exit port diameter before ordering — an aperture mismatch between the terminator and the lightguide causes UV energy loss right at the connection interface, undermining whatever the terminator is meant to solve. For precision work on a Ø5mm system at the same 60° oblique angle, the LGT-60-5 is the correct match rather than adapting the LGT-60-8 down. For perpendicular access at the same Ø8mm aperture, the LGT-90-8 handles bond faces sitting at a true right angle where fixture clearance permits a full 90° approach.
The decision tree is consistent across the whole LGT-Series: match aperture to the lightguide already in use, then choose exit angle based on what the fixture geometry and bond face orientation actually allow. Get the aperture wrong and energy is lost at the coupling; get the angle wrong and the terminator simply can’t reach the joint.
For the complete range comparison across all four LGT-Series configurations, see the LGT-Series lightguide terminators overview. Incure also publishes a broader guide on lightguide selection and configuration for facilities evaluating the full curing setup, not just the terminator hardware, and operators servicing Ø8mm terminator-equipped stations should confirm their Vison UV-blocking eyewear is rated for the lamp source behind the lightguide. Contact Our Team for help matching a terminator configuration to a specific bond geometry.
Visit www.incurelab.com for more information.