JP2022029174A5 - - Google Patents

Claims (5)

an OCT optical system for acquiring OCT data from the measurement light and the reference light irradiated to the fundus of the subject's eye; a front imaging optical system for capturing a front image of the fundus by scanning the light on the fundus of the subject's eye; In a fundus imaging device comprising
A fundus photographing apparatus, wherein the scanning light scanned on the fundus of the subject's eye by the front imaging optical system has a wavelength longer than λ=850 nm, which is a wavelength region in which the scanning light is difficult for the subject's eye to visually recognize. The scanning light scanned on the fundus of the eye to be examined by the front imaging optical system is
2. A fundus imaging apparatus according to claim 1, wherein the wavelength is longer than λ=900 nm, which is an invisible region for an eye to be examined. 3. The fundus imaging apparatus according to claim 1, wherein the light source used in the OCT optical system is a light source that emits measurement light having a center wavelength between λ=1000 nm and 1100 nm. an anterior segment observation optical system for guiding the reflected light from the anterior segment of the subject's eye illuminated by the anterior segment illumination light source to the imaging device;
The optical path of the measurement light in the OCT optical system and the optical path of the scanning light in the front imaging optical system are divided, and the anterior segment observation is performed for either the optical path of the OCT optical system or the front imaging optical system. a first wavelength separation member that separates wavelengths to split the optical path of the optical system;
a second optical path split by the first wavelength splitting member for splitting the optical path of the anterior segment observation optical system from the optical path of either the OCT optical system or the front imaging optical system; a wavelength separation member;
The fundus imaging device according to any one of claims 2 and 3, characterized by comprising: A measurement optical system for measuring the visual field by projecting a stimulus point on the fundus of the subject's eye with visible light, and a front imaging optical system for capturing a front image of the fundus by scanning light on the fundus of the subject's eye. In the fundus imaging device comprising
A fundus photographing apparatus, wherein the scanning light scanned on the fundus of the subject's eye by the front imaging optical system has a wavelength longer than λ=850 nm, which is a wavelength region in which the scanning light is difficult for the subject's eye to visually recognize.