Ophthalmic apparatus

摘要

An ophthalmic apparatus includes: a main unit including a unit for observing or photographing an examinee's eye; a movable part in which the main unit is mounted; a vertical movement mechanism provided with a drive part to move the movable part up and down; an operating member to be operated by an examiner to move the movable part up and down; a sensing part to detect an operation signal of the operating member; and a driving control part to convert the operation signal detected by the sensing part to a drive signal to move the movable part up and down, and drive the drive part based on the drive signal, wherein the drive part includes a motor having a hollow portion about a rotation axis thereof, the motor being controlled by the driving control part to rotate.

主权项

1. An ophthalmic apparatus including:
a main unit including a movable part and a fixed part, the movable part having a microscope configured to observe or photograph an examinee's eye; the fixed part including:
a vertical movement mechanism provided with a base and a drive part configured to move the movable part up and down;an operating member configured to be operated by an examiner to move the movable part up and down; anda sensor configured to detect an operation signal of the operating member; and a driving controller configured to convert the operation signal to a drive signal to move the movable part up and down, and drive the drive part based on the drive signal, the drive part including a motor fixed to the base and being controlled by the drive controller to rotate, the motor including a stator having an electromagnet and a rotor having a hollow portion disposed about a rotation axis thereof and placed to be rotatable relative to the stator, the hollow portion being formed with a female screw, and the vertical movement mechanism including a male screw disposed in a shaft and engaged with the female screw, the male screw being fixed to and moving with the movable part, wherein the male screw is moved up and down relative to the female screw by rotation of the female screw of the rotor based on a magnetic force generated by the electromagnet to move the movable part in a vertical direction in synchronization with the vertical movement of the male screw without vertical movement of the fixed part including the motor.