Three dimensional imaging apparatus and a method for use thereof
AssigneeTalia Technology Ltd.
InventorsAvner Karpol, Ran Zeimer
Life of this patent
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Abstract
Disclosed is a three dimensional imaging scanning apparatus for retinal thickness and structure non-invasive analysis. The apparatus includes an optical path having a light source, common focusing optic and beam deflector for both incident and reflected beams going to and returning from the retina of an eye, and an imaging device. The apparatus further includes separate optical paths for imaging the fundus and iris of the eye. The speckles caused by retina non-uniformity can be removed by vibrating the common beam deflector during the image acquisition time. An eye model is obtained by spatially integrating images of the retina, the fundus and the iris.
Claims27
A three dimensional imaging scanning apparatus for retinal thickness and structure non-invasive analysis, said apparatus comprising at least one optical path having
- a light source providing an incident beam for illuminating a selected zone of a retina of an eye;
- a focusing optic for simultaneously focusing said incident beam going to the retina and a reflected beam returning from the retina, wherein the focusing optic is common for both the incident beam and the reflected beam;
- an optical beam deflector common for both the incident beam and the reflected beam;
- an aperture for defining an angle between the incident beam and the reflected beam;
- and
- a detector for detecting the reflected beam and for determining a thickness of the retina.
A method of speckles removal for use in a retinal analysis using a common optical beam deflector for both illuminating an incident beam on a selected zone of a retina and transmitting a reflected beam returning from the retina to an imaging device for acquiring an image of the retina, said method comprising the steps of
- super-imposing super-imposed movements onto motion of the optical beam deflector to move the illuminated zone on the retina over an area larger than that zone, thereby concurrently moving the imaging zone so that the image of the illuminated zone does not move on the imaging device, and
- finishing the super-imposed movements within a time shorter than an image acquisition time.
A method for imaging eye components, comprising the steps of
- (a) simultaneously using three optical paths for
- (i) scanning and imaging an retina of the eye using at least a common optical beam deflector to illuminate a predetermined zone of the retina and to acquire an image of said zone, while vibrating said optical beam deflector during an illumination/acquisition time to improve image quality;
- (ii) imaging a Fundus of the eye;
- and
- (iii) imaging a pupil/iris of the eye;
- (b) subsequently spatially integrating one or more of said imagings into an eye model.
A three dimensional imaging scanning apparatus for retinal thickness and structure non-invasive analysis, said apparatus comprising at least one optical path having
- a high brightness light source or a laser providing a incident beam for illuminating a selected zone of a retina;
- a focusing optic for simultaneously focusing said incident beam going to the retina and a reflected beam returning from the retina, wherein the said focusing optic is common for both the incident beam and the reflected beam;
- an optical beam deflector common for both the incident beam and the reflected beam, wherein super-imposed movements of a predetermined amplitude are super-imposed onto motion of the optical beam deflector for reducing optical noise caused by non-uniformity of the retina;
- an aperture for defining an angle between the incident beam and the reflected beam;
- and
- a detector for detecting the reflected beam and for determining a thickness of the retina.
Dependencies are inferred from the claim text.