Fundus imaging apparatus

摘要

A fundus imaging apparatus includes: an interference optical system configured to detect, with a detector, an interference state between a reference light and a measurement light that is reflected at a fundus; an optical scanner configured to scan the fundus with the measurement light; an optical member configured to adjust an optical path length difference between the measurement light and the reference light; an imaging unit configured to photograph a tomographic image of the fundus based on an output signal from the detector; a first optical path length adjuster configured to move the optical member, based on a light-receiving signal output from the detector corresponding to a position of the optical member; a second optical path length adjuster configured to readjust a position of the optical member; and an optical system adjuster configured to adjust the interference optical system between adjustments by the first and second optical path length adjusters.

主权项

1. A fundus imaging apparatus comprising:
an interference optical system configured to split light flux emitted from a light source into a measurement light and a reference light, the interference optical system detecting, with a detector, an interference state between the reference light and the measurement light that is reflected at a fundus of an examinee's eye; an optical scanner disposed on an optical path of the measurement light, the optical scanner scanning the fundus with the measurement light; a driver configured to drive an optical member, the optical member being disposed on the optical path of the measurement light or on an optical path of the reference light so as to adjust an optical path length difference between the measurement light and the reference light; a imaging unit configured to generate a tomographic image of the fundus based on an output signal from the detector; a first optical path length adjuster configured to obtain a light-receiving signal output from the detector corresponding to a position of the optical member while moving the optical member by controlling the driver, the first optical path length adjuster moving the optical member to a position where the fundus tomographic image is obtained, based on the light-receiving signal; a second optical path length adjuster configured to readjust a position of the optical member adjusted by the first optical path length adjuster; and an optical system adjuster configured to adjust the interference optical system between adjustments by the first optical path length adjuster and the second optical path length adjuster.