Optimax® Optical UV Adhesives for High-Clarity Bonding

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Overview

Optimax® optical UV adhesives are formulated for applications where bond line transparency and minimal optical distortion are non-negotiable. Grades 6435 and 6450 deliver low shrinkage, high refractive index stability, and excellent long-term clarity — bonding glass, PET, polycarbonate, and other transparent substrates without hazing, yellowing, or stress birefringence.

In display bonding, lens assembly, fibre optic applications, and medical imaging, the adhesive is part of the optical path. Any absorption, scattering, or refractive index mismatch in the bond line directly affects device performance. Optimax® optical grades are engineered to minimise these effects.

Key Benefits

Low shrinkage during cure — maintains precise component alignment
High optical clarity and long-term stability against yellowing
Refractive index control — matchable to substrate requirements
Low outgassing — suitable for sealed optical assemblies
Dual cure options available for shadowed bond lines
Low thermal stress — minimises induced birefringence

Applications

Optical lenses and prisms
Display panels and touchscreens
Fibre optic assemblies and connectors
Medical imaging devices and diagnostic instruments
Automotive optical systems — cameras, LiDAR, HUDs
Industrial imaging, machine vision, and sensor assemblies

Application Notes

Air bubbles at the bond interface cause significant optical scatter and must be avoided. Application under slight positive pressure or in vacuum bonding fixtures is recommended for critical assemblies. Where refractive index matching is required, confirm the cured RI value of the selected grade against your substrate specification.