초록 ▼

A system and method of determining the angular displacement of one or more members is disclosed. A reference laser beam is diffracted, reflected and impacted upon a face of a display as a light pattern in which the pattern spacing is representative of a determinable angular displacement relative to

A system and method of determining the angular displacement of one or more members is disclosed. A reference laser beam is diffracted, reflected and impacted upon a face of a display as a light pattern in which the pattern spacing is representative of a determinable angular displacement relative to a reference pattern.

대표청구항 ▼

A method of determing the angular displacement of one or more members relative to a reference plane, said method comprising the steps of: generating reference lines on a target representative of the reference plane diffracting a beam of coherent light from the reference plane through the target by p

A method of determing the angular displacement of one or more members relative to a reference plane, said method comprising the steps of: generating reference lines on a target representative of the reference plane diffracting a beam of coherent light from the reference plane through the target by projecting same through a transmission ruling having a known frequency and through a small opening in the target; attaching a reflective surface to the one or more members to be receptive of the diffracted beam from the small opening through the target whereby said diffracted beam impacts the reflective surface on the member whose orientation is to be determined; reflecting said diffracted beam by said reflective surface on the face of the target; and determining from the image of the reflected diffracted beam on the face of the target the displacement of the member from the reference plane by measuring the displacement of said diffraction pattern from target reference lines.