公开(公告)号：US20190183343A1

公开(公告)日：2019-06-20

申请号：US16246218

申请日：2019-01-11

Applicant: HI LLC

Inventor： Changhuei YANG ,  Adam MARBLESTONE ,  Jamu ALFORD

IPC: A61B5/00 ,  H04N5/349 ,  G02B26/06

CPC classification number: A61B5/0042 ,  A61B5/0035 ,  A61B5/0062 ,  A61B5/0066 ,  A61B5/4064 ,  A61B2576/026 ,  G01B9/02091 ,  G01N21/45 ,  G01N21/4795 ,  G01N2201/0668 ,  G02B21/0056 ,  G02B26/06 ,  H04N5/349

Abstract: Described herein are systems and methods for noninvasive functional brain imaging using low-coherence interferometry (e.g., for the purpose of creating a brain computer interface with higher spatiotemporal resolution). One variation of a system and method comprises optical interference components and techniques using a lock-in camera. The system comprises a light source and a processor configured to rapidly phase-shift the reference light beam across a pre-selected set of phase shifts or offsets, to store a set of interference patterns associated with each of these pre-selected phase shifts, and to process these stored interference patterns to compute an estimate of the number of photons traveling between a light source and the lock-in camera detector for which the path length falls within a user-defined path length range.