Patent ID: 11857316
Assignee: HI LLC
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A

Claim 30:
31. The non-invasive optical detection system of claim 1,
wherein the volume of interest is a first volume of interest, the volume of non-interest is a first volume of non-interest, the optical masking zone is a first optical masking zone, the measurement period is a first measurement period, the sample light is a first sample light, the signal light is first signal light, and the at least one interference light pattern is a first at least one interference light pattern;
wherein the acoustic assembly is further configured for emitting ultrasound to create a second optical masking zone in a second volume of non-interest of the scattering medium;
wherein the interferometer is configured for emitting the sample light into the scattering medium having a second volume of interest and the second volume of non-interest during a second measurement period, such that a first portion of the second sample light passes through the second volume of interest without passing through the second optical masking zone, and exits the scattering medium as second signal light, and a second portion of the second sample light passes through the second optical masing zone in the second volume of non-interest and exits the scattering medium as background light that is combined with the second signal light to create a second sample light pattern, the interferometer further configured for combining the reference light with the second sample light pattern to create a second at least one interference light pattern, each having a holographic beat component;
wherein the second masking zone decorrelates at least a portion of the background light of the sample light pattern from the holographic beat component of each of the second at least one interference light pattern;
wherein the at least one detector is configured for detecting the holographic beat component of each of the second at least one interference light pattern during the second measurement period; and
wherein the processor is configured for determining an optical parameter of the second volume of interest based on detected holographic beat component of each of the second at least one interference light pattern.