Mitaka Kohki Co., Ltd.

Minoru Ishima

Katsuhiro Miura

Hideo Kotajima

Hajime Hirose

Takao Tsukamoto

A weight balance method of a surgical microscope is able to automatically align, in response to a switching operation, a center of gravity G of the surgical microscopewith a rotary shaft S. A weight balance of the surgical microscope is easily attained only by slanting the surgical microscope, and therefore, no part of the surgical microscope protrudes upward to interfere with a supporting structure of the surgical microscope.

Weight balance method of surgical microscope and mechanism thereof

Even if a return beam from a work to be measured does not agree with the center of a two-piece sensor, a correction value is calculated according to a voltage difference between two sensors of the two-piece sensor if the voltage difference is within a neighborhood range. The correction value is added to an actual position of an objective lens in an up-down direction, to calculate a movement amount of the objective lens up to a focused state (a state in which the return beam agrees with the center of the two-piece sensor).

Growing community of inventors

Kanagawa, Japan

Minoru Ishima