光学测距方法及装置
By setting a photosensitive area in the optical ranging device to detect the reflected light inside the module housing, and combining the ranging results from the internal and external optical paths for calibration, the ranging limitation of the dToF module's optical dead zone distance is solved, achieving accurate ranging of targets within the optical dead zone and improving the practicality and stability of the ranging device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN POLARISIC MICROELECTRONICS CO LTD
- Filing Date
- 2025-10-28
- Publication Date
- 2026-07-17
AI Technical Summary
The dToF module cannot accurately measure the distance to a target located within the dead zone due to the limitation of optical dead zone distance, which leads to the limitation of ranging applications.
By setting a first photosensitive area in the optical ranging device to detect the reflected light inside the module housing, and using the superimposed data parameters and the data parameters of the first reflected light to calculate the distance to the target, and combining the ranging results of the internal and external optical paths for calibration, common-mode interference is eliminated, thus achieving accurate ranging of targets within the optical dead zone.
It overcomes the ranging limitations of dToF modules in optical dead zone distance measurement, can accurately detect the target distance within the optical dead zone, and improves ranging accuracy and stability through internal and external optical path calibration, making it suitable for distance detection of both static and dynamic targets.
Smart Images
Figure CN121028107B_ABST