精密ガラス部品向けの光学コンタクトボンディング

Optical contact bonding is designed for precision optical assemblies where adhesive layers, outgassing, refractive index mismatch or wavefront distortion cannot be accepted. By bringing two super-polished optical surfaces into direct contact, the parts can form a transparent and dimensionally stable bond without cement, adhesive or heat.

This process is suitable for high-end optical components that require clean interfaces and stable optical paths, especially when surface flatness, roughness and cleanliness are already tightly controlled.

Common application directions include:

Etalons and interferometry parts — adhesive-free spacer assemblies, reference flats and beam splitter structures.
High-power laser optics — intra-cavity windows, output couplers, polarizers and bonded fused silica parts.
Space and vacuum optics — bonded assemblies where adhesive outgassing or thermal instability may create risk.
Precision crystal and glass assemblies — optical isolators, retarders and multi-element structures requiring a cement-free interface.

We can support optical contact bonding for fused silica, quartz glass, borosilicate glass, sapphire, silicon, glass-ceramic and optical glass components. For each project, the key details to confirm include material pair, surface flatness, surface roughness, scratch-dig requirement, bonding area, transmitted wavefront requirement, assembly size and final working environment.