Patent ID: 9211088
Filing Date: 2015-12-15
Classification: A61B

Abstract:
1. A non-invasive glucose testing device without using a blood sample, comprising: a device housing that forms an enclosure; a plate in the device housing that is structured to include an optical window that transmits light and provides a surface for a person to place a finger for performing a glucose test; a light source located inside the device housing to produce probe light that transmits through the optical window to reach the finger and to produce returned probe light from the finger which carries information of an illuminated part of the finger for performing the glucose test; a phase mask device located inside the device housing in an optical path of the returned probe light from the optical window to exert one or more spatial binary phase patterns onto the returned probe light; a single-mode optical fiber segment located inside the device housing and configured to include an input terminal located to receive the returned probe light output by the phase mask device and an output terminal to output light; a focusing optical unit located inside the device housing in an optical path of the returned probe light between the phase mask device and the input terminal of the single-mode optical fiber to focus a portion of the returned probe light from the phase mask into an optical mode of the input terminal of the single-mode optical fiber while directing remainder of the returned probe light from the phase mask to miss the input terminal of the single-mode optical fiber, wherein the one or more spatial binary phase patterns are configured to cause the returned probe light at the input terminal to be in an optical mode different from the optical mode of the single-mode optical fiber; and an optical detection module located inside the device housing and positioned to receive output light from the output terminal of the single-mode optical fiber segment to produce a detection output containing information of a glucose level.