Technologies


Video Ophthalmoscope with Single-Adjustment Focus

Reference#: P01364


The invention is a hand-held ophthalmoscope modified by the removal or augmentation of the focusing wheel and the addition of a manual or automatic focusing lens system. An electronic imager (CCD array or video camera) is placed optically conjugate to a viewing screen such that focus operations performed by the examiner to adjust the image seen by the examiner on the screen also focuses the image on the electronic imager. This is accomplished by an optical system which includes a straight path from the viewing screen to the patient's eye with a beam splitter interposed to cause the image of the patient's eye to be reflected onto the imager. As a result, when the examiner uses the focusing lens system, manual or automatic, positioned between the beam splitter and the patient's eye, to affect the image viewed by the examiner, the focus of the imager is simultaneously affected as well. The output from the electronic imager can be in digital or analog form and can consist of a single frame or a video stream.

CONTACT:
Dr. G. R. Jacobovitz
Phone: (443) 778-9899
ott-techmanager3@jhuapl.edu