| US 7,527,379 B2 | ||
| Ophthalmologic imaging apparatus | ||
| Tatsuo Yamaguchi, Tokyo (Japan); and Toshifumi Mihashi, Tokyo (Japan) | ||
| Assigned to Kabushiki Kaisha Topcon, Tokyo (Japan) | ||
| Filed on Jun. 14, 2007, as Appl. No. 11/812,089. | ||
| Claims priority of application No. 2006-167233 (JP), filed on Jun. 16, 2006. | ||
| Prior Publication US 2007/0291229 A1, Dec. 20, 2007 | ||
| Int. Cl. A61B 3/10 (2006.01) | ||
| U.S. Cl. 351—205 [351/221] | 10 Claims |
| 1. An ophthalmologic imaging apparatus comprising:
a first light source section comprising a first light source for emitting a light beam having a first wavelength and a second
light source for emitting a light beam having a second wavelength both for illuminating a desired observation area on a retina
of an eye under measurement;
a second light source section comprising a third light source for projecting a light beam having the first wavelength on the
retina as an almost point image and a fourth light source for projecting a light beam having the second wavelength on the
retina as an almost point image;
a first illumination optical system for illuminating the observation area on the retina, with a first light beam emitted from
the first light source section;
a second illumination optical system for projecting a second light beam emitted from the second light source section on the
retina as an almost point image;
an aberration compensation section for applying compensation to a first reflected light beam obtained when the first light
beam is reflected by the retina and a second reflected light beam obtained when the second light beam is reflected by the
retina so as to cancel out aberrations that include at least high-order aberrations, according to aberrations measured at
the first wavelength and the second wavelength;
an aberration measurement section comprising a second light-receiving section for receiving the second reflected light beam
which aberrations have been compensated for by the aberration compensation section, through a dividing means for dividing
into at least 17 beams, the aberration measurement section measuring aberrations of the second reflected light beam at the
first wavelength or the second wavelength according to a light-receiving signal of the second light-receiving section;
a first light-receiving section for receiving the first reflected light beam coming from the retina, which aberrations have
been compensated for by the aberration compensation section; and
a light-receiving optical system for forming a retinal image on the first light-receiving section with the first reflected
light beam coming from the retina through the aberration compensation section,
wherein,
after a light beam is emitted from the third light source and aberrations at the first wavelength are compensated for by the
aberration compensation section, a first retinal image formed through the aberration compensation section on the first light-receiving
section by a light beam having the first wavelength coming from the first light source is obtained; and
after a light beam is emitted from the fourth light source and aberrations at the second wavelength are compensated for by
the aberration compensation section, a second retinal image formed through the aberration compensation section on the first
light-receiving section by a light beam having the second wavelength coming from the second light source is obtained.
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