Apparatus and method for creating a stable optical interface

摘要

A system and a method for creating a stable and reproducible interface of an optical sensor system for measuring blood glucose levels in biological tissue include a dual wedge prism sensor attached to a disposable optic that comprises a focusing lens and an optical window. The disposable optic adheres to the skin to allow a patient to take multiple readings or scans at the same location. The disposable optic includes a Petzval surface placed flush against the skin to maintain the focal point of the optical beam on the surface of the skin. Additionally, the integrity of the sensor signal is maximized by varying the rotation rates of the dual wedge prisms over time in relation to the depth scan rate of the sensor. Optimally, a medium may be injected between the disposable and the skin to match the respective refractive indices and optimize the signal collection of the sensor.

主权项

1. An optical apparatus configured to temporarily attach to an optical sensor, the optical apparatus comprising:
a releasable connector for temporarily attaching the optical sensor to the optical apparatus; an attachment layer for attaching the optical apparatus to a patient's skin; an apparatus body having a first side towards the optical sensor and a second side towards the patient's skin, at least a portion of the body being transparent to allow light to pass from the first side to the second side; a focusing lens on the first side of the apparatus body, the focusing lens configured to receive light from the optical sensor; and a protruding surface on the second side of the apparatus body, the protruding surface configured to concentrate pressure on the patient's skin; wherein the focusing lens is configured to direct light received from the optical sensor through the transparent portion of the apparatus body and the protruding surface onto the patient's skin.