초록 ▼

A method and device for detecting the contour data and/or optical characteristics of an object, such as a tooth or a tooth restoration, based on an interference and/or autocorrelation measurement using an image sensor. To permit an exact surface detection in addition to a determination of the optica

A method and device for detecting the contour data and/or optical characteristics of an object, such as a tooth or a tooth restoration, based on an interference and/or autocorrelation measurement using an image sensor. To permit an exact surface detection in addition to a determination of the optical characteristics of the object, individual light beams strike the object, which are located at a distance from one another in such a way that no impact of reflected individual light beams takes place on immediately adjacent pixels of the image sensor.

대표청구항 ▼

The invention claimed is: 1. Method for recording at least one of contour data and optical properties of a three-dimensional, semi-transparent object, on the basis of an interference or auto-correlation measurement, comprising the steps of:generating a bundle of rays from at least one light source o

The invention claimed is: 1. Method for recording at least one of contour data and optical properties of a three-dimensional, semi-transparent object, on the basis of an interference or auto-correlation measurement, comprising the steps of:generating a bundle of rays from at least one light source of short coherence length;passing the bundle of rays through a beam splitter and subsequently guiding the bundle of rays, through a focusing optical system, to the object where the rays are reflected as a beam;splitting off a reference beam from the bundle of rays in the beam splitter and reflecting the reference beam by a plane surface of a reference mirror movable along the reference beam, where by moving the reference mirror, a position relative to a signal generating plane is fixed relative to the object; andbringing together the beam reflected from the object and the beam reflected from the reference mirror and transferring into an image sensor having pixels, the image sensor including means for recording at least one of temporally and spatially altered signal patterns upon passing through a signal recovering surface,wherein the bundle of rays is subdivided into spatially distanced parallel single light rays before impinging upon the beam splitter, causing individual light rays to each illuminate a pixel or pixel group and the single light rays are sufficiently spaced in relation to one another such that each said illuminated pixel or pixel group is surrounded by a non-illuminated pixel region.