US 11,986,244 B2
Wide field fundus camera with auto-montage at a single alignment
Paul Andrew Yates, Charlottesville, VA (US); Ming Lai, Charlottesville, VA (US); Ta-Wei Yi, New Taipei (TW); and Alex Martinez, Charlottesville, VA (US)
Assigned to RETIVUE LLC, Charlottesville, VA (US)
Filed by Retivue, LLC, Charlottesville, VA (US)
Filed on Jan. 26, 2021, as Appl. No. 17/158,632.
Application 17/158,632 is a continuation of application No. 16/312,683, granted, now 10,925,486, previously published as PCT/US2017/038560, filed on Jun. 21, 2017.
Claims priority of provisional application 62/352,944, filed on Jun. 21, 2016.
Prior Publication US 2021/0353144 A1, Nov. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 3/15 (2006.01); A61B 3/00 (2006.01); A61B 3/12 (2006.01); A61B 3/14 (2006.01); G06T 5/00 (2006.01); G06T 5/50 (2006.01); H04N 7/18 (2006.01)
CPC A61B 3/158 (2013.01) [A61B 3/00 (2013.01); A61B 3/0008 (2013.01); A61B 3/12 (2013.01); A61B 3/14 (2013.01); A61B 3/152 (2013.01); G06T 5/003 (2013.01); G06T 5/50 (2013.01); H04N 7/18 (2013.01); G06T 2207/20172 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A wide field fundus camera, comprising:
an objective lens having a viewing axis and disposed to form a retinal image, the objective lens being a wide field aspherical lens having a FOV of at least 60 degrees;
an image recording device disposed to capture said retinal image of a wide field of view;
a plurality of illumination beam projectors positioned around said viewing axis and each configured to project an illumination beam at an angle toward said objective lens;
a mechanism of cross polarization configured between said image recording device and said plurality of illumination beam projectors to reject specular reflections of said illumination beams;
an image display operatively coupled to the image recording device to display said retinal image from said image recording device;
an electronic controller operatively coupled to said plurality of illumination beam projectors to provide power to each of the plurality of illumination beam projectors in a predetermined sequence to provide illumination to obtain each of a plurality of retinal images;
a dehazing algorithm implemented to remove reflections and scattered light haze from said plurality of retinal images; and
an automated montage algorithm implemented to produce a montage of said plurality of retinal images into a single image of said wide field of view.