Line-scan laser ophthalmoscope

Details Line-scan laser ophthalmoscope Line-scan laser ophthalmoscope

2007-10-23

2007-10-23

Manuel, George (Department: 3762)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

Reexamination Certificate

active

10864081

ABSTRACT:
Systems and methods for providing a line-scanning laser ophthalmoscope (LSLO) are disclosed. The LSLO uses a substantially point source of light, such as an infrared laser or a super-luminescent diode. The point source is expanded to a line. The LSLO scans the line of light in a direction perpendicular to the line across a region of an eye having an undilated pupil The reflected light is received confocally, using monostatic beam geometry. A beam separator, such as a turning prism or mirror, diverts one of the incoming light and the reflected light to separate the light. An optical stop prevents non-confocally received light from reaching a one-dimensional detector, such as a linear CCD array. An electrical signal responsive to the output light at each of a plurality of locations along the line of output light is processed to provide images of the scanned portion of the eye.

REFERENCES:
patent: 5784148 (1998-07-01), Heacock
patent: 6471691 (2002-10-01), Kobayashi et al.
Kobayashi et al., “Confocal scanning laser ophthalmoscope with a slit aperature,” J. Phys. Sci. Technol. 2, 287-292 (1991).
Heacock et al., “Imaging of the choroids with the scanning slit laser ophthalmoscope (SSLO),” SPIE vol. 3591, 456-464 (1999).

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