Patent ID: 6065221
Filing Date: 2000-05-23
Classification: G01D

Abstract:
An optical ruler structure comprising:a first guide seat formed as an elongated bar and formed with an internal axial chamber, one side of the chamber being formed with an elongated channel axially extending through the first guide seat and communicating the chamber with an outer side of the first guide seat, a pair of flexible plates being disposed on two opposite sides of the channel an optical scale being disposed in the chamber of the first guide seat; anda second guide seat disposed on an outer side of the channel of the first guide seat, one side of the second guide seat being disposed with a slide section passing through the channel, the slide section having a slide seat at one end distal from the second guide seat, a signal outputting device being installed on an upper side of the slide seat so as to read data from the optical scale;wherein the slide section perpendicularly extends from the second guide seat, a flexible stopper plate being disposed on an outer side of the slide section, the stopper plate being a thin sheet and formed with a central slot parallel to a long side thereof, each end of the slot being formed with a stopper section.