Infrared Optical Coatings for High Performance Applications

Yes, our specialized coating techniques work with both plastic and glass substrates using custom fixture designs. Infrared coatings may serve applications in sensing systems, LiDAR, thermal imaging, automotive driver monitoring, and industrial detection. Performance requirements often include defined passbands, controlled reflection suppression, durability under temperature cycling, and resistance to humidity and contamination. Spectral control must remain stable over time.

Our coatings meet ISO adhesion, abrasion, temperature, humidity, and salt solubility specifications for demanding applications. Applying IR coatings to polymer optics is not the same as coating glass. Polymers expand more with temperature, have lower surface energy, can outgas under vacuum, and may soften at elevated process temperatures. This introduces risk for adhesion failure, micro-cracking, delamination, and stress-induced optical distortion. Coating stack design must account for substrate movement.

Yes, we provide custom designed and fabricated coatings with in-house fixture design and building capabilities. Infrared thin-film stacks are layered systems. If the coating's thermal expansion differs significantly from the substrate, stress builds during temperature cycling, micro-cracks can form, and spectral performance may drift. This risk increases on large-format windows, thin polymer substrates, and parts with mechanical preload. Coating durability must be validated under realistic thermal cycling.

Lead times vary based on coating complexity and volume. Contact us for specific project timelines and delivery estimates. Coating reliability depends heavily on substrate cleaning, surface energy preparation, primer layers, and deposition parameters. Poor surface preparation may pass initial inspection — but fail months later. Adhesion testing must reflect humidity exposure, mechanical handling, and temperature fluctuation.

Yes, we maintain ISO 13485:2016 certification for medical device quality management and manufacturing processes. Infrared coatings can shift performance due to humidity ingress, micro-crack propagation, layer stress relaxation, and UV exposure depending on environment. Initial transmission curves are not sufficient validation. Long-term environmental testing is required to confirm stability.

We can coat components ranging from 1mm to 300mm in diameter using our advanced manufacturing capabilities. Thin-film deposition processes can introduce thermal stress, ion bombardment damage, localized heating, and substrate distortion. On polymer optics, excessive deposition stress can warp thin components, alter optical geometry, and induce birefringence. Deposition processes must be matched to substrate limitations.

Polymer substrates may not be appropriate if operating temperatures are high, environmental exposure is severe, dimensional stability must approach glass levels, or coating stacks require elevated deposition temperatures. Glass may provide greater thermal and environmental stability in some IR applications. Material selection must align with system requirements.

Infrared-coated components often move from prototype success to production challenges. Ramp-up risks include lot-to-lot coating thickness variation, chamber drift, adhesion variability, and surface contamination variability. If spectral tolerances are tight, small variation can impact system performance. Process control and monitoring must be disciplined.

Rather than asking 'Can you apply an IR coating?', experienced teams ask: How does the coating behave under 500+ thermal cycles? What adhesion testing standards are used? How is stress managed on thin polymer parts? What is the spectral drift after humidity exposure? How tight is thickness control across production batches? These questions define reliability.