Patent ID: 7850305
Filing Date: 2010-12-14
Classification: A61B

Abstract:
1. An apparatus for measuring spectral fundus image data, comprising: an illumination optical system having an illumination light source that emits a light beam in a specified wavelength range, for illuminating a fundus of a subject eye with the light beam from the illumination light source; a light receiving optical system for receiving the light beam reflected from the illuminated fundus and for forming a fundus image on the light receiving surface of a photographing section; a wavelength tunable filter disposed in either the illumination optical system or the light receiving optical system and capable of choosing a wavelength of a transmitted light beam in the specified wavelength range; a spectral characteristic correcting filter disposed in either the illumination optical system or the light receiving optical system and having a wavelength characteristic for correcting the wavelength characteristic of the emitted light intensity of the illumination light source and the transmission wavelength characteristic of the wavelength tunable filter to keep the received light intensity on the light receiving surface within a specified range; and a data measuring section for taking spectral fundus image data based on signals from the light receiving surface when the wavelength of the transmitted light beam of the wavelength tunable filter is changed.