Three-dimensional retina image generation device

A three-dimensional retina image generator comprising:

• a light source unit having a light source;
• a light splitter that splits an outgoing light beam emitted from the light source into a reference light beam and an object light beam;
• a reference light beam unit that has a reference mirror and reflects the reference light beam, which is inputted therein, by the reference mirror;
• an adaptive optics measurement unit that irradiate a retina of an eyeball with the object light beam inputted therein, and that outputs a light scattered on the retina as a reflected object light beam with compensating aberration generated due to the structure of the eyeball, the retina of the eyeball being an object to be measured;
• a detecting unit that performs interference of the reflected reference light beam and the reflected object light beam, and that detects interference intensity in each of wavelengths of interfering light beam generated by performing the interference;
• a calculating unit that calculates reflected intensity data of the retina in a depth direction nearly parallel to an incident direction by performing a Fourier transform on the detected interference intensity in each of the wavelengths of interfering light beam, the incident direction being a direction in which the object light beam enters the retina;
• and
• a generation unit that generates the three-dimensional image of the retina based on the calculated reflected intensity data,
• wherein the adaptive optics measurement unit has:
• a wavefront sensor that detects a wavefront of the reflected object light beam;
• an image location adjusting unit that has a deformable mirror and that adjusts an image location of the object light beam based on the wavefront of the reflected object light beam, the deformable mirror being a mirror as a single mechanical element in order to only compensate low-order wave aberration including focus correction based on the wavefront of the reflected object light beam detected by a wavefront sensor, and
• a beam angle adjusting unit that adjusts an angle of the object light beam with respect to the image location on the retina in order to scan the retina by the object light beam, and
• wherein the light source unit emits the outgoing light beam that has a depth of focus of not less than 300 μm and not more than 400 μm, and resolution that is between 3 μM×3 μm and 6 μm×6 μm or higher in a planar direction perpendicular to a traveling direction of the outgoing light beam.