News | January 22, 2025

Non-Contact Thickness Management

Source: Bristol Instruments, Inc.

Bristol’s line of Optical Thickness Gauges use white light interferometry to achieve unparalleled accuracy in non-contact thickness measurement. These systems are used extensively to measure multi-layer transparent and semi-transparent materials, including optical components and lens assemblies. Our systems are easily integratable into manufacturing processes to improve quality, increase yields, and reduce costs.

Thickness Gauge System Features:

  • Measure hard and soft materials without damage or deformation
  • Simultaneously measures all layers (including air gaps)
  • Measure layers as thin as 12 µm to assemblies up to 80 mm
  • Accuracy as high as ± 0.1 µm

View this short video to see a demonstration of our optical thickness gauge measuring the center thickness of a lens doublet.

See our technology in person at Photonics West 2025 in San Francisco (Booth #228). Bring your optical part and we'll provide a live measurement demonstration in our booth.