| 20110178408 | Accurate Low-Cost Non-Invasive Body Fat Measurement - Systems and methods for measuring fat content of a body are provided. An instrument may be employed that generates light with different center wavelengths without the use of narrow optical band-pass filters and without the use of any light diffusing material. The instrument may include at least two different center wavelengths infrared emitting diodes (IREDs) having center wavelengths that are about 10 nanometers apart. A first IRED may have a center wavelength between 935 and 945 nanometers, and a second IRED may have a center wavelength between 945 and 955 nanometers. The IREDs may be arranged in a circular pattern in holes in an opaque medium. A near-infrared optical detector may be located at the center of the circular pattern. The instrument may perform a body fat measurement at a fixed distance from the crease in the elbow towards the biceps of the arm. The instrument may instead perform the body fat measurement at a fixed distance from the elbow bone towards the triceps of the arm. | 07-21-2011 |
