激光多普勒测振技术
激光多普勒测振技术（LDV）拥有业界领先的位移与速度分辨率，广泛应用于基础科学领域。它可实现飞米级振幅测量，线性特性优异，在高达 8 GHz 的超高频段下仍保持精准稳定。
Doppler effect
In order to understand the measuring principle of optical vibration sensors, we must first transfer the phenomenon of the Doppler effect to light waves: if a beam of light is reflected by a moving object, its frequency changes in proportion to the speed of the object. This frequency shift contains the velocity information that is used by the laser Doppler vibrometer as a measurement signal.
频闪视频显微术
Stroboscopic video microscopy (SVM) makes use of the fact that high-frequency vibrations at component level can be visualized with normal video cameras when rapid movements are visually frozen using short flashes of light.
QTec®
QTec®首次使用多通道采集技术，从而从根本上消除了工程表面的噪声根源，获得了最高的光学灵敏度，实现了所有表面上的高保真振动测量。
QTec FAQ
QTec® is an advanced laser Doppler vibrometry technology by Polytec that enables high-precision, non-contact vibration measurements. It features high optical sensitivity, best signal-to-noise ratio on all surfaces, a broad frequency bandwidth, and no mass loading, making it ideal for demanding measurement tasks.
