The relative position of two members is determined based upon a detected relative intensities of first and second colors of light. The intensity balance associated with relative occlusion of first and second color filter portions on one member by a mask on the other member. An exemplary use is in rotational position sensing within a limited rotation range. With a given compliance between the two members, the position sensing can be used as a proxy for torque sensing.
申请公布号
CA2420586(A1)
申请公布日期
2003.09.04
申请号
CA20032420586
申请日期
2003.03.03
申请人
INDEPENDENCE TECHNOLOGY, L.L.C.
发明人
NERGAARD, DAVID K.;BRADLEY, ALBERT M.;YOERGER, DANA R.