Light field camera for fundus photography
AssigneeCarl Zeiss Meditec AG
InventorsAlexandre R. Tumlinson, Matthew J. Everett
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Abstract
Systems and methods for applying the concept of lightfield sensors to fundus photography are presented. In one embodiment, the ability to isolate specific regions of the collected lightfield are used to reduce the effects of glare in a fundus image. Additional embodiments in which aberrations can be characterized and removed, an image from a particular plane in the collected light field is used to aid in instrument alignment, and dynamic optimization of collection pupil diameter is accomplished are also presented.
Claims25
An ophthalmic imaging system, said system comprising:
- an illumination light source;
- a detector for collecting both positional and directional information of the ray paths of illumination light reflected from the eye of a patient;
- optics for directing the illumination light source to the eye of the patient and for directing light reflected from the eye of the patient to the detector;
- a processor for processing the positional and directional information and for generating an image of the eye of the patient using the positional and directional information;
- and
- a display for displaying the image.
A method of obtaining images of the fundus of the eye of a patient comprising the steps of:
- illuminating the eye with a light source;
- capturing light rays reflected from the eye with a light field sensor, said sensor generating signals representative of both the position and direction of the captured light rays;
- and
- processing the signals to generate an image of the fundus of the eye.
Dependencies are inferred from the claim text.