Patent ID: 9723978
Date: 2017-08-08
CPC Classifications: A61B

Claim:
1. A fundus photography device comprising: a fundus illumination optical system including at least a photography light source and an observation light source, the fundus illumination optical system configured to illuminate a fundus of a subject's eye; a fundus photography optical system including at least a first imaging sensor configured to photograph the fundus, and a second imaging sensor configured to observe the fundus, the fundus photography optical system configured to photograph a front image of the fundus; an OCT optical system including at least a measuring light path, a reference light path, and a photodetector configured to detect an interference signal between light from the measuring light path and light from the reference path, and configured to obtain a tomographic image of the fundus using optical coherence tomography; a wavelength selective splitter disposed in an optical path of the fundus photography optical system, and configured to guide a light having a wavelength less than 700 nm and shorter than reflected light of the fundus produced by the observation light source to the first imaging sensor, and configured to guide the reflected light of the fundus produced by the observation light source having a wavelength greater than 700 nm to the second imaging sensor; and a first barrier filter disposed insertably and removably on the optical path of the fundus photography optical system, the first barrier filter configured to transmit fluorescent light from the fundus excited by fluorescence excitation light produced by the photography light source, the first barrier filter configured to cut off light having wavelengths other than the fluorescent light having a wavelength less than 700 nm.