User manual

Functional description VL6180X
30/79 DocID026171 Rev 6
2.13 Ambient light sensor (ALS)
The VL6180X contains an ambient light sensor capable of measuring the ambient light level
over a wide dynamic range. This section describes the main features of the ALS. The ALS
performance specification can be found in Section 4.2.
2.13.1 Field of view
Figure 19 shows the ALS field of view which is typically 42 degrees (half angle, 40% of
peak) in both X and Y.
Figure 19. ALS angular response
2.13.2 Spectral response
The spectral response of the ALS compared to photopic response is shown in Figure 20.
Figure 20. ALS spectral response
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350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100
Wavelength (nm)
Photopic
VL6180X