US 12,279,824 B2
Ophthalmic apparatus
Yoshikiyo Moriguchi, Tokyo (JP)
Assigned to TOPCON CORPORATION, Tokyo (JP)
Filed by Topcon Corporation, Tokyo (JP)
Filed on Feb. 24, 2022, as Appl. No. 17/679,085.
Application 17/679,085 is a continuation of application No. PCT/JP2020/030732, filed on Aug. 12, 2020.
Claims priority of provisional application 62/898,753, filed on Sep. 11, 2019.
Prior Publication US 2022/0175246 A1, Jun. 9, 2022
Int. Cl. A61B 3/135 (2006.01); A61B 3/00 (2006.01); A61B 3/10 (2006.01)
CPC A61B 3/135 (2013.01) [A61B 3/0008 (2013.01); A61B 3/102 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An ophthalmic apparatus, comprising:
an irradiation optical system including a light source and configured to generate measurement light using light from the light source;
an optical scanner configured to deflect the measurement light and to guide the deflected measurement light to a subject's eye;
an optical splitting and combining unit configured to guide the measurement light to the optical scanner and to generate interference light between reference light that is generated from the light from the light source and returning light of the measurement light from the subject's eye; and
a detector configured to detect the returning light and the interference light via the optical splitting and combining unit, wherein
the irradiation optical system is configured to generate slit-shaped measurement light using the light from the light source,
the ophthalmic apparatus further includes a controller configured to control the detector using a rolling shutter method so as to acquire light receiving result of the returning light corresponding to an irradiated position of the measurement light in a measurement site of the subject's eye,
the irradiation optical system includes a slit with a slit-shaped aperture capable of being arranged at a position substantially conjugate optically to the measurement site, and an iris aperture arranged between the light source and the slit, and configured to be capable of being arranged at a position substantially conjugate optically to an iris of the subject's eye, and
the ophthalmic apparatus further comprising:
a first movement mechanism configured to move the slit in an optical axis direction of the irradiation optical system, wherein
the controller is configured to control the first movement mechanism based on a dioptric power of the subject's eye.