US 12,239,372 B2
Focus stacking for retinal imaging
Dhruv Lamba, Mountain View, CA (US); and Sam Kavusi, Menlo Park, CA (US)
Assigned to Verily Life Sciences LLC, Dallas, TX (US)
Filed by Verily Life Sciences LLC, South San Francisco, CA (US)
Filed on Aug. 3, 2023, as Appl. No. 18/230,073.
Application 18/230,073 is a continuation of application No. 17/489,670, filed on Sep. 29, 2021, granted, now 11,766,170.
Application 17/489,670 is a continuation of application No. 16/046,265, filed on Jul. 26, 2018, granted, now 11,160,449, issued on Nov. 2, 2021.
Claims priority of provisional application 62/551,708, filed on Aug. 29, 2017.
Prior Publication US 2023/0389789 A1, Dec. 7, 2023
Int. Cl. A61B 3/00 (2006.01); A61B 3/10 (2006.01); A61B 3/11 (2006.01); G06T 5/50 (2006.01); G06T 5/73 (2024.01)
CPC A61B 3/0025 (2013.01) [A61B 3/0008 (2013.01); A61B 3/10 (2013.01); A61B 3/112 (2013.01); G06T 5/50 (2013.01); G06T 5/73 (2024.01); G06T 2207/10152 (2013.01); G06T 2207/20216 (2013.01); G06T 2207/30041 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A system for imaging a retina, the system comprising:
a first lens adapted for positioning proximate to an eye;
an image sensor positioned to capture a retinal image of the retina through the first lens;
a light source for generating illumination of the eye;
a display to output a fixation target;
a beam splitter disposed in an optical path extending from the image sensor through the first lens, the beam splitter positioned between the image sensor and the first lens and adapted to redirect the fixation target output from the display along the optical path out through the first lens for viewing by the eye, wherein the light source comprises a plurality of light emitting diodes (LEDs) disposed on either side of the optical path for illuminating different portions of the retina; and
a processing apparatus communicatively coupled to the image sensor, the light source, and the display, wherein the processing apparatus includes logic that when executed by the processing apparatus causes the system to perform operations including:
generating the fixation target;
illuminating the retina of the eye with the light source; and
capturing the retinal image with the image sensor while illuminating the eye.