Actually, I believe that the Sharp modules in the article use a 
triangulation scheme whereby one section of the module sends out an IR 
beam and the other section has a linear ccd array and "sees" where the 
spot lands along that array. So, no time of flight but VERY little 
influence from reflectivity as long as there is enough.
-- 

Looking forward,
Al Shinn

Russle said:
"The article that started this does not use time of flight -
the sensors are calibrated on magnitude of transmitted light
reflected back from a highly reflective surface, and their
use in the proposed system would lead to highly variable and
unpredictable results unless all targets were highly
reflective."


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