35-meter distance + 20Hz frequency/80μm ​​amplitude strong vibration environment, verifying the nanometer-level stability of the FIS4 wavefront sensor!

In the fields of modern optical measurement and precision manufacturing, stable measurement over ultra-long working distances has always been a technical challenge. The greater the distance, the greater the environmental disturbances; factors such as vibration and temperature changes directly affect measurement accuracy. Today, we will demonstrate the outstanding performance of the FIS4 Wavefront Sensor under the dual pressures of a 35-meter ultra-long distance and a strong vibration environment with a frequency of 20Hz and an amplitude of 80μm through a set of real-world test data!

Simultaneous verification under dual stringent conditions: 35-meter distance + 20Hz frequency/80μm amplitude

Test Scenario 1: Stability at pure long distance

▶ Measurement Distance: 35 meters

▶ Measurement Parameters: PV (Peak-Valve Value) and RMS (Root Mean Square Value)

▶ Test Method: Continuous Real-Time Measurement

PV stability performance:

In 235 consecutive measurements, the PV value fluctuated by only about 5nm, demonstrating extremely high stability!

RMS stability performance:

The RMS value fluctuates by only 3nm, demonstrating extremely strong anti-interference capability!

Conclusion: Even at an ultra-long distance of 35 meters, the FIS4 wavefront sensor maintains nanometer-level measurement stability, overcoming typical long-distance interferences such as air disturbances and temperature gradients. It is suitable for long-distance, high-precision optical inspection.

Test scenario 2:

35 meter distance+20Hz frequency/80 μ m amplitude strong vibration environment

In actual industrial environments, equipment vibration is one of the main factors affecting measurement accuracy. We simulated a typical industrial vibration environment with a frequency of 20Hz and an amplitude of 80 μ m, and conducted rigorous testing on the FIS4 Wavefront Sensor.

▶ Frequency: 20Hz

▶ Amplitude: 80 μ m

▶ Distance between sensor and light source: 35 meters

▶ Vibration mode: Vibration table simulation

PV performance under vibration environment:

The PV value fluctuates by about 10nm, maintaining excellent stability even under strong vibration and long-distance dual interference!

RMS performance under vibration environment:

The RMS fluctuation is only 2nm, and the anti vibration performance is even better than static long-distance testing! Excellent anti vibration ability!

It can be seen from the above tests that the FIS4 wavefront sensor not only performs well in the pure long-distance or pure vibration environment, but also remains stable in the real industrial scene of 'long-distance+vibration' double interference superposition. The anti vibration level of FIS4 Wavefront Sensor is suitable for various vibration testing environments due to VC-A.

Technical highlights:

FIS4 adopts adaptive optical compensation and real-time wavefront reconstruction algorithms, which can correct aberrations in real-time even in vibration environments, ensuring accurate data.

✅  Ultra long working distance: supports stable measurement of over 35 meters

✅  High anti vibration performance: suitable for industrial vibration environments

✅  Real time measurement: The software interface displays data fluctuations in real-time

✅  Nanoscale accuracy: PV and RMS both achieve nanoscale stability

✅  Strong environmental adaptability: supports complex scenarios such as heat sources and vibrations

Conclusion

Since 2006, Professor Yang Yongying's team at Zhejiang University has developed the FIS4 series Wavefront Sensor based on four wave transverse shear interferometry technology, after 17 years of dedicated research and development. Through its nanoscale measurement accuracy, excellent anti vibration performance, and real-time monitoring capability, it provides a complete measurement solution for the high-end optical detection field! Welcome teachers in need to make appointments for trial testing services!