| 摘要 |
A laser beam emitted by a laser light source 1 is scanned in a series of small, high-speed oscillations in a first scanning direction by an acousto-optical deflector 4, and scanned at a lower frequency in a second direction perpendicular to the first scanning direction by a vibration mirror galvanometer 8M, and scanned at yet a lower frequency in a third direction, parallel to the first direction, by a mirror galvanometer 11M in order to enable high-precision scanning, and is projected onto a prescribed region of an eye 14. Light reflected by the eye 14 passes, via the mirror galvanometers 11M and 8M, through a confocal optical aperture 16 and is converted to an electrical signal by a photosensor 18. The signal is then converted by signal processor 19 to a standard television line format. <IMAGE> |
