| CPC B60R 1/29 (2022.01) [B60K 35/60 (2024.01); B60R 1/30 (2022.01); B60K 35/23 (2024.01); B60K 35/415 (2024.01); B60K 2360/25 (2024.01); B60R 2300/103 (2013.01); B60R 2300/105 (2013.01); B60R 2300/8006 (2013.01)] | 31 Claims |
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1. An occupant monitoring system for a vehicle, the occupant monitoring system comprising:
a first light source to generate first infrared (IR) light illuminating at least part of the body of an occupant of a vehicle, wherein the first light source is time modulated with a duty cycle, wherein the first light source is a vertical-cavity surface-emitting laser (VCSEL), wherein the VCSEL generates non-IR light together with the first IR light, the occupant monitoring system further comprising a filter for a first IR camera to remove reflections of the non-IR light, wherein the occupant monitoring system reduces capture of ambient light by a limited duration, gated exposure in which an overcurrent is provided so that the VCSEL operates at peak power of at least about 100 times a continuous average output for which the VCSEL is rated;
an IR reflective surface to reflect second IR light reflected from the body of the occupant; and
the first IR camera, the first IR camera to receive at least part of the second IR light reflected by the IR reflective surface, wherein the first IR camera is time modulated with the duty cycle of the first light source.
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