US 12,408,833 B2
Non-mydriatic hyperspectral ocular fundus camera
Xavier Hadoux, East Melbourne (AU); Maxime Jannaud, East Melbourne (AU); Francis Labrecque, East Melbourne (AU); and Peter Van Wijngaarden, East Melbourne (AU)
Assigned to CENTRE FOR EYE RESEARCH AUSTRALIA LIMITED, East Melbourne (AU)
Appl. No. 18/005,415
Filed by CENTRE FOR EYE RESEARCH AUSTRALIA LIMITED, East Melbourne (AU)
PCT Filed Jul. 14, 2021, PCT No. PCT/AU2021/050754
§ 371(c)(1), (2) Date Jan. 13, 2023,
PCT Pub. No. WO2022/011420, PCT Pub. Date Jan. 20, 2022.
Claims priority of application No. 2020902430 (AU), filed on Jul. 14, 2020.
Prior Publication US 2023/0255470 A1, Aug. 17, 2023
Int. Cl. A61B 3/00 (2006.01); A61B 3/10 (2006.01)
CPC A61B 3/0008 (2013.01) [A61B 3/0025 (2013.01); A61B 3/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A non-mydriatic ocular fundus imaging apparatus including:
an illumination module having:
one or more light sources configured to generate light at wavelengths within a desired spectral range;
a first optical assembly to shape and direct the light onto an eye of a subject; and
a tuneable bandpass filter to select a wavelength sub-interval within the desired spectral range;
an imaging module having:
a second optical assembly to collect light returned from the eye of the subject and to project the returned light from the eye onto an image sensor, the second optical assembly including one or more optical elements capable of compensating for ocular variation; and
an image sensor configured to image the returned light to generate a non-mydriatic image of the ocular fundus at the wavelength sub-interval; and
one or more controllers configured to:
tune the tuneable bandpass filter between a plurality of wavelength sub-intervals within the desired spectral range;
control the image sensor to generate a plurality of non-mydriatic images of the ocular fundus at each of the plurality of wavelength sub-intervals; and
dynamically control the power of the one or more light sources to provide a respective predefined power level for each of the plurality of wavelength sub-intervals;
wherein the tuneable bandpass filter and the image sensor are synchronized by the one or more controllers so as to capture images at different wavelength sub-intervals within the desired spectral range; and
wherein the plurality of non-mydriatic images of the ocular fundus is captured within a time of 300 milliseconds.