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Optical Non-Contact Thickness Measurement

OptiGauge II®

The OptiGauge® II is a non-contact thickness measurement system for manufacturers and engineering teams that need precise, repeatable measurements without relying on manual gauges or destructive methods.
Built around low-coherence interferometry technology, the OptiGauge II provides thickness measurements for multi-layer film stacks, coatings, tubing, glass, silicon, and other transparent or semi-transparent materials with submicron accuracy.

The OptiGauge II is successfully used worldwide in Quality, R&D labs, and production floors because it can improve yields, reduce costs, increase quality, and meet compliance requirements.

  • Specifications
  • Features
  • Applications
  • Software + Accessories
  • Optical Thickness Measurement Range: 12 µm to 16 mm
  • Measurement Rate: 50 Hz to 100 Hz
  • Accuracy: ± 0.1 µm
  • Measurement of up to 20 layers
  • Offers ethernet connectivity to customers' laptops or PCs to run the OCC software
  • Automatic calculation of thickness of individual layers and total overall thickness
  • Top wall, inner diameter, bottom wall, and outer diameter measurements of balloon or tube
  • Connect up to 8 total measurement probes via optical switch
  • Ideal for integration into customer's online production process or into OEM applications
Product Fact Sheet

A Thickness Measurement System Built for Real Production and Lab Use

The OptiGauge II is designed for end-users that need a non-contact thickness measurement system they can trust across quality, R&D, and production environments. It replaces subjective manual methods with a stable optical approach that helps improve repeatability, reduce scrap, and support tighter process control.

Because it is non-contact, the OptiGauge II helps measure delicate or hard-to-inspect materials without damaging the sample. This makes it a strong fit for modern manufacturing environments where accuracy and throughput both matter.

What OptiGauge II Measures:

 

  • Non-contact thickness measurement of multi-layer materials
  • Medical tubing and balloon wall measurement
  • Glass and coating measurement
  • Silicon wafer applications
  • Lens stacks, air gaps, and optical assemblies
  • Contact lenses and other transparent components

Key Benefits

Measure Up To 20 Layers Automatically calculate individual layer thicknesses and total thickness.  
Improve Process Control Use fast, repeatable measurement data to support production decisions, reduce waste, and tighten QA performance.  
Fit the Workflow Deploy in the lab, integrate into production, or configure for OEM use to fit your specific application.  

Why Customers Choose The OptiGauge II

 

Customers choose the OptiGauge II when they need more than a generic thickness gauge. They need a measurement platform that can handle specialized materials, support technical workflows, and adapt to real operating conditions. The OptiGauge II helps bridge the gap between engineering-grade accuracy and day-to-day usability.

Technical Highlights

The OptiGauge II combines precision optical measurement with flexible system configuration:

  • Low-coherence interferometry measurement technology
  • Thickness range from 12μm to 16mm, depending on RI of material
  • Accuracy of ±0.1μm
  • Measurement rates of 50Hz or 100Hz
  • Support for multiple probes through optical switching
  • Ethernet and other connectivity options for workflow integration

Software & Accessories

 

The OptiGauge II can be extended with software and accessories that help customers move from measurement to action. Options support data handling, probe configuration, multiple probe switching, and application specific setup.

Common Applications:

 

  • Multi-layer thickness measurement
  • Medical tubing and balloon measurement
  • Silicon wafer measurement
  • Glass inspection
  • Optical component measurement
  • Custom metrology integrations

Metrology Instrumentation, Integration, + Solutions

Review application notes and technical materials show how the OptiGauge II is used to measure lens stacks, bonded silicon wafer assemblies, and complex material cross-sections.

TOUCH
App Note Measurement of Multiple Lens Thicknesses & Air Gaps
App Note Measurement of Multiple Lens Thicknesses & Air Gaps Download Now
TOUCH
App Note Optical Thickness and Flatness Measurement of Bonded Silicon Wafer Assemblies
App Note Optical Thickness and Flatness Measurement of Bonded Silicon Wafer Assemblies Download Now
TOUCH
App Note Materials Cross-Section Using a Low-Coherence Interferometer
App Note Materials Cross-Section Using a Low-Coherence Interferometer Download Now

Want to see OptiGauge II in action?

See how OptiGauge II can fit your measurement workflow.
Request a Demo

OptiGauge II Unit Specs

Measurement Method: 
Low Coherence Interferometry
Measurement Wavelength: 
1310 nm
Software: 
Lumetrics OptiGauge Control Center®
Common Measured Materials: 
Glass, Plastic, Tubing, Silicon, Coatings, Fluids, Air Gaps, Contact Lenses, Intraocular Lenses
Number of Layers Measured: 
Up to 20
Thickness Measurement Range: 
12 μm – 16 mm, dependent on refractive index of sample material
Units of Measurement:
μm, mm, mils, in, μ in
Accuracy: 
± 0.1 μm

Repeatability: 
± 0.1 μm 1σ
Measurement Rate 
50 Hz (100 Hz & 200 Hz optional)
Power Requirements: 
AC 110 V – 240 V 50/60 Hz, 20 watts / 30 VA
Dimensions: 
17" (w) × 4.5" (h) × 19.5" (d)
43.18 cm (w) × 11.43 cm (h) × 49.53 cm (d)
Weight: 
27 lbs. (12.25 kg)
Operating Temperature Range: 
59° – 86°F (15° – 30°C)
Operating Relative Humidity:
10 – 90% (non-condensing)
Output Connectivity: 
RJ-45 Ethernet, RS-232, USB 2.0, aux digital I/O