Nippon Kogaku K.k.

Kuniyuki Yoshikawa

Noriyoshi Hashimoto

Kazuaki Saiki

Koichi Kudo

Aiichi Ishikawa

In order to appropriately position a specimen within a view finder of a microscope, the stage supporting the specimen must be quickly and smoothly moved in all directions of two dimensions X and Y. According to the present invention, this can be accomplished by dividing a tilt angle of an operation lever of a joy stick into three regions, an insensitive band, a low velocity region and a high velocity region. For each of latter two regions, a relevant signal is produced by the joy stick and transferred to a microcomputer which controls stage driving motors by sawtooth pulse voltages. The velocities of X- and Y-stages are generally setted in the microcomputer so as to be high for the high speed region and low for the low speed regions, and movements in X- and Y-directions alternate by a short time interval, thus quick and smooth movements of stages being enabled.

Growing community of inventors

Fujisawa, Japan

Kuniyuki Yoshikawa