light at a first position can be reflected from the object at a first position 410 a and the second low power reflected light 411 b which is an example of a first reflected light at a second position can be reflected from the object at a second position 410 b the reflected light can be collected and processed by both the imaging assemblies 401 a 401 b for example the first low power reflected light 411 a can be imaged by the optical assemblies 403 a 403 b and focused onto a demodulation pixel arrays 402 a 402 b wherein a disparity can be determined e g via standard stereo matching algorithms and correlated with distance from the optoelectronic module 400 to the object at a first position 410 a similarly at another instant in time for example the second low power reflected light 411 b can be correlated with distance to the object at a second position 410 b as described above the detection of a distance or position change between the object at a first position 410 a and the object at a second position 410 b is associated with object movement generally the aforementioned detection of movement of the object from the first position to the second position may activate a high power mode e g may activate the high power illumination assembly 412 however in other instances an object entering the scene may also activate a high power mode fig4 b depicts.