Applications

A wide range of quality inspection applications for every industry.

Paint Inspection

Despite the advanced state of vehicle manufacturing, paint inspection remains a pain point for many automakers, which are limited by legacy quality control solutions. Sightline’s SightScope sensor uses OCT and HSI techniques to inspect each layer of paint, right down to the surface of the vehicle to identify defects or contaminants within or under the paint.

Surface & Composites

The use of fibre-reinforced plastics and other composite materials has been steadily increasing, from their initial applications in sports equipment and high performance racing cars, to helicopters and now commercial and military aeroplanes. Essentially a combination of two or more dissimilar materials combined to maximize best properties or deliver new characteristics, composites are typically laminated layer-by-layer in order to form the final structure.

The result is strong, lightweight materials with significant advantages over non-composite materials. However, the complex makeup of composites presents unique quality assurance challenges, particularly due to the layered structure of such materials and breadth of manufacturing variables which operate during their production.

Glass Inspection

Sightline’s SightScope sensor employs OCT to scan glass sheets and assemblies of any shape, including flat, curved or bent. The system is capable of analyzing tinted glass of ~ 5 to 90 per cent transmittance, as well as surface coatings (chrome, paint or lettering).

SightScope is capable of detecting the following defects:

  • Scratches
  • Chips
  • Inclusion
  • Distortions
  • Edge Defects
  • Broken Glass
  • Dimensional Analysis
  • Machined Holes

Laser Cutting Inspection

In industrial processes laser cutting or drilling, OCT has proven to be a fast and non-destructive tool to assess the shape and depth of laser induced (sub)surface structures in a variety of different materials.

Tablet Coating Characterization

Film coatings are used by the pharmaceutical industry for a variety of applications including taste masking, improved product stability, shelf-life increase or controlled release of the active pharmaceutical ingredient. However, problems such as cracking, pills sticking together, roughened surfaces and film thickness variations often hamper productivity. Hyperspectral and OCT techniques solve such issues by revealing chemical composition and film coating thickness, without coming into contact with the actual product.

Evaluation of structural changes in materials

Many materials experience structural changes during both the manufacturing process and the lifecycle of the product. Materials undergo hardening, cooling or heating phases, or changes due to load or stress. OCT and hyperspectral deliver a rapid, fully contactless and non-destructive approach to monitor and evaluate such processes.

Other Applications

OCT and hyperspectral imaging have also been applied to the analysis of:


  • the characterization of paper
  • printed electronics circuits
  • the characterization of wettability
  • organic solar cells
  • aerospace materials
  • light emitting diodes
  • embedded microchannels in alumina ceramics
  • precision agriculture
  • biotechnology
  • environmental monitoring
  • food
  • remote sensing
  • security and defence