Optical measuring system for magnifying displacement, optical measuring apparatus for magnifying displacement and measuring method thereof

摘要

An optical measuring apparatus for magnifying displacement includes a seat, a movable abutting member, a plurality of static optical sensing elements and a dynamic optical sensing element. The seat includes a positioning groove. The movable abutting member is pivotally connected to the seat and corresponding to the positioning groove. An object is sandwiched between the movable abutting member and the positioning groove. The static optical sensing elements are disposed on the seat. The dynamic optical sensing element is disposed on the movable abutting member. There is an optical sensing distance between the dynamic optical sensing element and one of the static optical sensing elements. The dynamic optical sensing element is moved along an arc path by the movable abutting member so as to change the optical sensing distance, and a change of the optical sensing distance is greater than a change of a diameter of the object.