Functional description

VL53L1X

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DocID031281 Rev 3

2.8

Sensing array optical center

VL53L1X module includes a lens that focus the photons on the 16x16 SPADs sensing array.

The sensing array optical center specification takes into account the part-to-part variation in

production.

The optical center is defined by coordinates (Xo and Yo).

The optical center is measured for each part during a factory test at STMicroelectronics. The

coordinates are stored in the VL53L1X non-volatile memory and are readable by the

customer through the software driver in the application. This helps optimize design

alignment with the camera and ranging performances in the application.

The green array in Figure 10: Optical center specification gives the possible location of the

optical center.

Figure 10. Optical center specification

For more details please refer to VL53L1X API user manual (UM2356)

Table 5. Optical center specification

Parameter

Min.

Typ.

Max.

Unit

Xo offset

-2

0

2

SPAD

Yo offset

-2

0

2