Data Sheet

DocID031478 Rev 1 15/28
UM2356 Ranging API function descriptions
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2.5.7 Spad array coordinates versus scene
Figure 7 shows the coordinates of an object in the SPAD array compared to the location in
the FoV.
Figure 7. VL53L1X coordinates vs scene
2.5.8 Optical center coordinates
Due to assembly tolerances, the optical center of the device can vary. The optical center of
the device is measured for each part. The optical center coordinates are stored in the device
NVM.
The user has access to the optical center coordinates by calling:
VL53L1_GetCalibrationData(). The returned structure VL53L1_CalibrationData_t
contains a substructure VL53L1_optical_centre_t which contains the two coordinates
(expressed in the SPAD number):
• x_centre
• y_centre
The host can use these two coordinates to better align the ROI to the optical center.