| US 7,540,614 B2 | ||
| Ophthalmologic apparatus | ||
| Hiroyuki Kawashima, Tokyo (Japan); Gaku Takeuchi, Tokyo (Japan); Takao Tanabe, Tokyo (Japan); and Noriyasu Kiryu, Tokyo (Japan) | ||
| Assigned to Kabushiki Kaisha TOPCON, Tokyo (Japan) | ||
| Filed on Dec. 27, 2007, as Appl. No. 12/5,275. | ||
| Claims priority of application No. 2006-353713 (JP), filed on Dec. 28, 2006. | ||
| Prior Publication US 2008/0158508 A1, Jul. 03, 2008 | ||
| Int. Cl. A61B 3/14 (2006.01); A61B 3/10 (2006.01) | ||
| U.S. Cl. 351—206 [351/205; 351/208] | 6 Claims |
| 1. An ophthalmologic apparatus, comprising:
an imaging system that illuminates a retina of an eye, and images the retina of the eye based on reflective luminous flux
from the retina;
an aberration measurement part that measures optical aberration of the eye;
an aberration compensation device disposed in the imaging system to compensate the optical aberration of the eye based on
a signal from the aberration measurement part;
a first focusing device disposed in an optical path of the imaging system to perform focusing of an image of the retina of
the eye according to a refractive property of the eye; and
a second focusing device disposed in the optical path of the imaging system to compensate an infinitesimal spherical aberration
generated by the aberration compensation device after adjustment by the first focusing device, and wherein
the first focusing device is a device that compensates a spherical diopter component and an astigmatism diopter component
of a wavefront aberration generated because of a flexing property of the eye and,
the second focusing device is a high-magnification high-speed focus mechanism that compensates a wavefront aberration component,
that is, an infinitesimal spherical diopter newly generated by deforming the deformable mirror and controls infinitesimal
quantity movement of at least a portion of a lens of a lens system that constitutes the imaging system along an optical axis
direction by a piezo device.
|