Scanning module, distance measuring device and mobile platform

A distance measuring device, comprising:

• a scanning module including:
• a first rotor assembly, the first rotor assembly including a first rotor, the first rotor including a first receiving cavity;
• a first optical element mounted in the first receiving cavity, the first optical element including a first end and a second end, the first end of the first optical element and the second end of the first optical element being respectively positioned at two ends in a radial direction of the first optical element, a thickness of the first end of the first optical element being greater than a thickness of the second end of the first optical element, a notch being formed on a side of the first rotor or/and the first optical element positioned at the first end of the first optical element;
• a second rotor assembly, the second rotor assembly including a second rotor and a boss, the second rotor including a second receiving cavity, the boss being disposed on an inner wall of the second rotor and positioned in the second receiving cavity;
• and
• a second optical element mounted in the second receiving cavity, the second optical element including a first end and a second end, the first end of the second optical element and the second end of the second optical element being respectively positioned at two ends in a radial direction of the second optical element, a thickness of the first end of the second optical element being greater than a thickness of the second end of the second optical element, the second end of the second optical element being opposite to the boss and positioned on the same side of a second rotation axis of the second rotor;
• and
• a distance measuring module, the distance measuring module being configured to emit a laser pulse to the scanning module, the scanning module being configured to change a transmission direction of the laser pulse and emit the laser pulse, the laser pulse reflected by an object to be detected passing through the scanning module and entering the distance measuring module, the distance measuring module being configured to determine a distance between the object to be detected and the distance measuring device based on the reflected laser pulse.