Abstract: A passive illumination device for use with at least one light source unit of an image receiver, in particular of a code reading device and/or code verification device, has at least one diffuser unit which is configured for converting light provided by the light source unit into at least substantially diffuse illumination light for an illumination of at least one illumination region and which comprises at least one diffuser element with at least one diffusion shell for a scattering of the light.

Abstract: A passive illumination device for use with at least one light source unit of an image receiver, in particular of a code reading device and/or code verification device, has at least one diffuser unit which is configured for converting light provided by the light source unit into at least substantially diffuse illumination light for an illumination of at least one illumination region and which comprises at least one diffuser element with at least one diffusion shell for a scattering of the light.

Abstract: A method for identifying objects, in particular substrates, in particular wafers, includes: a prioritization process for generating a prioritized list of identification strategies including at least one identification strategy in at least one prioritization step; and an identification process for capturing at least one image of at least one object in at least one image capturing step according to at least one highest priority identification strategy of the prioritized list and processing said image in at least one image processing step according to the highest priority identification strategy of the prioritized list.

Abstract: A method for identifying objects, in particular substrates, in particular wafers, includes: a prioritization process for generating a prioritized list of identification strategies including at least one identification strategy in at least one prioritization step; and an identification process for capturing at least one image of at least one object in at least one image capturing step according to at least one highest priority identification strategy of the prioritized list and processing said image in at least one image processing step according to the highest priority identification strategy of the prioritized list.

Abstract: In a method for concretizing a substrate with a code (1, 2) which is applied at least twice by a code reader, the codes (1, 2) are intended to be assigned or matched to one another, this being suitable for restoring an intact code (1, 2) from at least two codes (1, 2) which are not intact per se.

Abstract: In a method for concretizing a substrate with a code (1, 2) which is applied at least twice by a code reader, the codes (1, 2) are intended to be assigned or matched to one another, this being suitable for restoring an intact code (1, 2) from at least two codes (1, 2) which are not intact per se.

Abstract: The invention generally relates to a compact, inexpensive-to-manufacture device consisting of few components for optically testing a surface. The zone on the surface that is to be investigated is illuminated by a semitransparent mirror and an aspheric field mirror, employing a telecentric optical train, and at least part of the light reflected or scattered by the surface is imaged onto the entrance pupil of the lens of an electronic camera by the field mirror, via the semitransparent mirror. Images recorded by the camera are analyzed using known image-processing methods.

Abstract: The invention generally relates to a compact, inexpensive-to-manufacture, device of few components for optically inspecting a surface and a method for same employing the device. The section of the surface to be investigated is illuminated by a semitransparent mirror and a field lens, employing a telecentric beam path, and at least part of the light reflected or scattered by the surface is imaged onto the entrance pupil of the optics of an electronic camera by the field lens, via the semitransparent mirror. All optical and electronic components, along with a light- and dust-tight housing, are carried on a specially configured mounting block such that they are self-aligning. The method for inspecting a surface involves automatically recording a series of images of the surface under various types of illumination situations. Those images are assembled into an image of the entire section of the surface to be investigated and analyzed using known image-processing methods.

Abstract: The invention generally relates to a compact, inexpensive-to-manufacture device consisting of few components for optically testing a surface. The zone on the surface that is to be investigated is illuminated by a semitransparent mirror and an aspheric field mirror, employing a telecentric optical train, and at least part of the light reflected or scattered by the surface is imaged onto the entrance pupil of the lens of an electronic camera by the field mirror, via the semitransparent mirror. Images recorded by the camera are analyzed using known image-processing methods.

Abstract: The invention generally relates to a compact, inexpensive-to-manufacture, device of few components for optically inspecting a surface and a method for same employing the device. The section of the surface to be investigated is illuminated by a semitransparent mirror and a field lens, employing a telecentric beam path, and at least part of the light reflected or scattered by the surface is imaged onto the entrance pupil of the optics of an electronic camera by the field lens, via the semitransparent mirror. All optical and electronic components, along with a light- and dust-tight housing, are carried on a specially configured mounting block such that they are self-aligning. The method for inspecting a surface involves automatically recording a series of images of the surface under various types of illumination situations. Those images are assembled into an image of the entire section of the surface to be investigated and analyzed using known image-processing methods.

Abstract: A method for the optical three dimensional measurement of a tooth without calibration bodies. An optical projection system projects a pattern onto a tooth, and an optical imaging system images the pattern projected thereon, from a first position in space and subsequently from a second position in space, with the images from the two positions in space having a common imaged area of the tooth. The image patterns are evaluated to calculate three dimensional coordinate data of the tooth surface relative to the respective imaging position for each image and also for the two images combined, to produce a single three dimensional tooth surface data record. In this method, points and/or surfaces are selected from the common imaged area with the aid of properties of the tooth surface contour which are invariant under displacement and rotation, so that they can be clearly correlated with each other.

Abstract: 3D tooth measurement by means of an optical probe wherein a prior matting treatment of the tooth to be measured can be dispensed with. The consequential reflection-dependent measuring errors are compensated by an error correction method.