Can production of optical coatings be monitored live?
NLIR’s high-speed MIDWAVE Spectrometer enables real-time transmission measurements of optical coatings in the 2.0 – 5.0 µm range, with acquisition times as short as a few milliseconds.
In coating systems using rotating substrate holders, NLIR’s rapid acquisition allows a complete transmission spectrum to be captured for every substrate on every rotation. This provides continuous, detailed insight into coating development throughout the deposition process.
Much like visible-light spectrometers used in inline monitoring across various industries, NLIR’s technology brings the same capabilities to the mid-infrared range – with new advantages:
- High Speed: Full-spectrum measurements in just milliseconds
- Robust Design: No moving parts ensures high reliability in demanding environments
- High Resolution: 2000 pixels across the 2.0 – 5.0 µm spectral range
IMPROVE CHARACTERIZATION OF OPTICAL COATINGS
Live data acquisition
400 Hz full-spectrum readout rate enables live access to data
High Resolution
2000 px across 2.0 – 5.0 µm range gives detailed information in every spectrum
No moving parts
Can be mounted in real production environments and still give great results
Excellent Service
Get help from our experienced optical engineers
How does it work?
In this video, we demonstrate how NLIR’s MIDWAVE Spectrometer, combined with FIBER Light Source, can measure transmission spectra of optical filters in real time. With an exposure time of just 2 ms, the spectrometer captures data from every filter on the rotating wheel during each full rotation.
The video first shows the distinct transmission spectra of each filter, then illustrates how the spectrometer continues to capture spectra accurately even as the wheel spins at 300 RPM providing less than 30 ms per filter.
Monitor optical coatings in real time with our TRANSMISSION Measurement System
TRANSMISSION Measurement System combined with
MIDWAVE Spectrometer
Readout full transmission spectra in milliseconds
TRANSMISSION Measurement System combined with
FIBER Light Source
Get infrared light to your sample in a fiber
Contact Us
* Required fields. Your personal data is kept confidential.
OPTICAL COATING CHARACTERIZATION WITH NLIR’S MIDWAVE SPECTROMETER
NLIR’s TRANSMISSION Interface with a 5 mW FIBER Light Source were used to carry out these transmission measurements of optical coatings: a Thorlabs FB3330-150 IR Bandpass filter with center wavelength at 3.33 μm and a Thorlabs FB4260-105 IR Bandpass filter with center wavelength at 4.25 μm resulting in the spectra depicted in the graph to the right. NLIR’s MIDWAVE Spectrometer was set to 20 ms exposure time and 10 spectra were averaged for each sample.
Optimize OPTICAL COATINGS' Production with Fast MIR Spectroscopy
Looking to enhance quality and process control for optical coating production? Bring the power of mid-infrared spectroscopy directly to your coating line.
NLIR’s real-time MIR spectroscopy solution delivers continuous transmission measurements in the 2.0 – 5.0 µm range – ideal for monitoring the production of IR filters, windows, and other IR precision optics. Contact us to explore how our MIR technology can support your production.
Sense It!
Add you details below to download our measurement report on fast transmission measurement of optical coatings.
By downloading this report, you agree to receiving marketing communication from NLIR. You can unsubscribe at any time. Read our Privacy Policy.
