Ruprecht-karls-universitat Heidelberg

Universitat Heidelberg

Friedrich-schiller-universitat Jena

Roman Amberger

Christoph Cremer

Heinz Eipel

Rainer Heintzmann

Gerrit Best

Stefan Dithmar

Thomas Ach

A method for non-invasive observations of a fundus using an ophthalmoscope is provided. The method includes illuminating a retinal region of an eye by projecting an illumination pattern of illumination light onto the retinal region, at least one of detecting a portion of fluorescent light emitted from the retinal region and detecting a portion of illumination light reflected from the retinal region, thereby capturing a series of images of the retinal region at a plurality of different relative positions of the retinal region with respect to the illumination pattern projected onto the retinal region, wherein between the capturing of at least two images of the series the relative position of the retinal region with respect to the illumination pattern projected onto the retinal region is shifted in a non-controlled manner, and processing the captured images to extract a sub-resolution image of the retinal region.

Structured illumination ophthalmoscope

A total internal reflection microscope for epi-fluorescence illumination observations includes an objective through which an object to be observed is illuminated by an excitation illumination light at an angle to an observation axis of the microscope. The angle is adjustable to be within the range suitable for a total internal reflection observation. The microscope also has a source of collimated excitation light. An interferometer is arranged in the optical path of the collimated excitation light and is configured to produce an interference pattern. A focusing lens system focuses the interference pattern produced by the interferometer into the back focal plane of the objective. The objective and the focusing lens system image the interference pattern produced by the interferometer into the conjugated image plane of the objective, thereby producing excitation illumination light that modulated spatially in intensity in a plane orthogonal to the observation axis of the microscope.

Total internal reflection interferometer with laterally structured illumination

Growing community of inventors

Bad Reichenhall, Germany

Roman Amberger