초록 ▼

A scanning ophthalmoscope for repeatedly scanning a selected portion of an eye fundus has a laser source which produces a directed narrow-beam output and means for scanning the fundus with at least one selected scanning sequence. The scanning beam passes through a pivot point located in a preselecte

A scanning ophthalmoscope for repeatedly scanning a selected portion of an eye fundus has a laser source which produces a directed narrow-beam output and means for scanning the fundus with at least one selected scanning sequence. The scanning beam passes through a pivot point located in a preselected plane, preferably within the eye, for providing a wide field of view. An optical system directs light reflected from the fundus to a detector, which produces an electrical output signal proportional to the detected light. An output element provides a visual representation of the magnitude of the output signal in a spatial distribution corresponding to the scanning sequence.

대표청구항 ▼

A scanning ophthalmoscope for providing a visual representation of an eye fundus under scanned illumination, said ophthalmoscope having the improvement comprising A. scanning laser source means for projecting a fundus-illuminating laser beam which scans according to a selected scanning sequence, B.

A scanning ophthalmoscope for providing a visual representation of an eye fundus under scanned illumination, said ophthalmoscope having the improvement comprising A. scanning laser source means for projecting a fundus-illuminating laser beam which scans according to a selected scanning sequence, B. optical means for directing said scanning laser beam through a pivot point in a plane having a location selected relative to the laser beam for receiving the pupil of the eye being examined for introducing the scanning laser beam into an eye so located through a small portion only of the eye pupil, and for directing said scanning beam to travel from said pivot point onto a wide-angle region of the fundus of the eye located with the eye pupil at said selected plane, C. optical detecting means for receiving light reflected from the eye fundus in response to illumination with said scanning beam, said detecting means being arranged for receiving light which traverses from within the eye through at least a major portion of the eye pupil, and for producing an electrical signal in response to the received light and with correspondence to said scanning sequence, and D. output means for providing a fundus-imaging output representation in response to said electrical signal.