| US 7,566,129 B2 | ||
| Ophthalmologic apparatus | ||
| Masayuki Hideshima, Tokyo (Japan); Kazuo Nunokawa, Tokyo (Japan); Makoto Fujino, Tokyo (Japan); Yoichiro Iwa, Tokyo (Japan); Akemi Miwa, Tokyo (Japan); Yoshiaki Goto, Tokyo (Japan); Gaku Takeuchi, Tokyo (Japan); and Takao Tanabe, Tokyo (Japan) | ||
| Assigned to Kabushiki Kaisha TOPCON, Tokyo (Japan) | ||
| Filed on Jun. 22, 2007, as Appl. No. 11/767,456. | ||
| Claims priority of application No. 2006-172769 (JP), filed on Jun. 22, 2006. | ||
| Prior Publication US 2007/0296919 A1, Dec. 27, 2007 | ||
| Int. Cl. A61B 3/14 (2006.01); A61B 3/10 (2006.01) | ||
| U.S. Cl. 351—206 [351/205] | 4 Claims |
| 1. An ophthalmologic apparatus comprising:
an ocular fundus photographing system that forms an image of an ocular fundus of a tested eye on a photographing apparatus
based on a reflective beam from the ocular fundus; and
an ocular fundus tracking controller that detects a light beam from the ocular fundus, reflected at a reflective region of
an illuminated region on the ocular fundus to detect a gaze direction of the tested eye, and performs tracking with respect
to the ocular fundus based on the detection result of the gaze direction, the ocular fundus tracking controller comprising:
a scanning mirror for scanning an area on which a detection beam projected on the ocular fundus is detected or a reflective
beam from the ocular fundus is detected;
a tracking mirror for controlling tracking to the ocular fundus;
an objective lens disposed opposite to the tested eye; and
an offset mirror positioned between the objective lens and the tracking mirror outside of a photographing optical path for
the ocular fundus, for adjusting a detection axis of the gaze direction.
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