Subjektive Optometrievorrichtung

Details

Veröffentlichungs-Nr.

EP4091535

Aktenzeichen

EP22174223

Anmeldetag

19. Mai 2022

Veröffentlichung

15. Mai 2024

Erteilung

15. Mai 2024

Rechtsraum

EP

IPC

A61B3/13A61B3/032A61B3/09A61B3/103A61B3/15A61B3/00

Abstract

A subjective optometry device subjectively measures an optical characteristic of a subject eye. The subjective optometry device includes a projection optical system that projects a target light flux toward the subject eye, a calibration optical system that changes an optical characteristic of the target light flux, a fixed optical member that is fixedly arranged in an optical path of the projection optical system and optically presents an image of the target light flux to the subject eye at a predetermined examination distance, a first moving means for moving a measurement unit with respect to the fixed optical member to perform first alignment of an optical axis of the projection optical system with respect to the subject eye, a second moving means for moving the measurement unit and the fixed optical member with respect to the subject eye to perform second alignment such that the image of the target light flux is irradiated onto the subject eye at a predetermined optical magnification, and a movement control means for controlling the first moving means and the second moving means to perform alignment of the measurement unit with respect to the subject eye.

Anmelder

Firma

Nidek Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete