| 摘要 |
<p>A rotary encoder and a kit thereof. The kit for a rotary encoder includes a plurality of signal generating members for generating mutually different signals, any selected one of the signal generating members being able to be attached in an exchangeable manner to a rotary body; and a signal sensing unit arranged in close proximity to one selected signal generating member attached to the rotary body, for sensing a signal generated due to a rotation of the signal generating member. The signal generating members are respectively formed in such a manner that the numbers of signal-cycles and the signal-intervals in signals generated during a unit rotation of respective signal generating members are different from each other, while the products of the numbers of signal-cycles multiplied by the signal-intervals in the signals are generally identical to each other. Each of the signal generating members is a circular plate member having an outer circumferential surface, and a signal generating element for generating the signal is provided on the outer circumferential surface of each signal generating member. In this arrangement, the signal generating members have outer diameters generally identical to each other.
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