| 摘要 |
PROBLEM TO BE SOLVED: To provide an ophthalmologic device which is made small-sized and facilitates focusing, etc. SOLUTION: This device is an ophthalmologic device such as a microscope 1 for surgical operation which reciprocates a mirror body part gravitationally and against gravitation by transmitting the turning force of a motor 21 to the mirror body part through a rotational speed reducing mechanism using worm gears 22 and 24 and worm wheels 23 and 25 and a rotation-linear motion complement mechanism, using a rack 32 and a pinion 31, and a spiral coil spring 30 is arranged which accumulates elastic energy when the mirror body moves gravitationally and discharges the elastic energy when the mirror body moves against the gravitation to complement the turning force transmitted from the motor 21. Consequently, the device is made small-sized by reducing the driving force and the moving speed is made uniform to facilitate the operation such as focusing. |
