Patent ID: 8852103
Filing Date: 2014-10-07
Classification: A61B,A61N,H04J

Abstract:
1. An apparatus, comprising: a plurality of radiation sources comprising a first radiation source, a second radiation source, and a third radiation source; a plurality of radiation sensors configured to receive radiation of wavelength λ emitted by one or more of the first, second, or third radiation sources, the plurality of radiation sensors including a first radiation sensor and a second radiation sensor, wherein the plurality of radiation sensors is sparsely arranged such that a spacing between the first radiation sensor and its nearest neighboring radiation sensor of the plurality of radiation sensors is greater than λ/2; and processing circuitry coupled to the first radiation sensor and the second radiation sensor and configured to receive and discriminate between, for each of the first and second radiation sensors, respective source signals emitted by the first, second, and third radiation sources, wherein the first radiation source, the second radiation source, and the first radiation sensor lie in a first plane, and wherein the second radiation source, the third radiation source, and the second radiation sensor lie in a second plane different than the first plane.