| 摘要 |
<p>The present invention discloses a sensing device for measuring the three dimension shape and its measuring method. The said sensing device includes a projecting device, an observing device, a projecting localizer, an observing localizer and a computer for data processing. The optic axis of the projecting device and the optic axis of the observing device are crossed on the surface of the object by the relative motion and the focusing of the projecting device and the observing device, such that the viewing field of the whole field measurement and the position of the zero-order fringe are determined. The projecting device and the observing device are focused automatically by means of the object distance and the image distance of the projecting device in this viewing field, and the object distance and the image distance of the observing device in this viewing field. The camera in the observing device records the fringe patterns respectively after phase shifting, and the computer calculates the three dimension surface shape of the object. The present invention achieves whole-field high accuracy and high speed absolute measurement of the three dimension object shape in the variable viewing field.</p> |
