Abstract:
An optical inspection system for capturing images of backlit test objects at two or more aperture settings includes a telecentric imaging system having a first setting associated with a first size aperture stop and a second setting associated with a second larger size aperture stop. An illumination system includes a substage illuminator incorporating (a) a first set of one or more light sources surrounded by a first barrier that defines a first size aperture stop and (b) a second set of one or more light sources located beyond the first barrier and surrounded by a second barrier that defines a second larger size aperture stop. The respective first and second size aperture stops of the illumination system image to the respective first and second size aperture stops of the telecentric imaging system at the respective first and second settings.
Abstract:
La présente invention concerne un dispositif ou appareil pour effectuer des mesures de forme sur une première surface (13) d'un wafer (12) relativement à des structures (14) présentes sous ladite première surface (13), qui comprend (i) des moyens de profilométrie (10) agencés pour effectuer des mesures de forme sur ladite première surface (13) du wafer(12) selon au moins un champ de mesure; (ii) des moyens d'imagerie (11) faisant face auxdits moyens de profilométrie (10) et agencés pour acquérir une image de référence desdites structures (14) sur ou au travers d'une seconde surface du wafer (12) opposée à la première surface(13) selon au moins un champ d'imagerie; lesdits moyens de profilométrie (10) et lesdits moyens d'imagerie (11) étant agencés de sorte que les champs de mesure et d'imagerie sont référencésen position dans un référentiel commun (15). L'invention concerne aussi un procédé mis en œuvre dans ce dispositif ou cet appareil.
Abstract:
The present invention relates to an automated quality control system developed for inspection household glass products such as ovenware, cornered products, bowls and storage boxes made of borosilicate, soda-lime and crystal glasses against manufacturing defects.
Abstract:
There is described an apparatus for obtaining images of an element (50) to be inspected, comprising first acquisition means (1 1 ) and second screening means (22) which can be activated according to a first activation mode, and deactivated according to a first deactivation mode; second acquisition means (21 ) and first screening means (12) which can be activated according to a second activation mode, and deactivated according to a second deactivation mode; the first acquisition means (1 1 ), the first screening means (12), the second acquisition means (21 ) and the second screening means (22) aligned along a common optical axis (100); wherein said first activation and deactivation mode and said second activation and deactivation mode occur in a predetermined sequence in order to obtain images of the first side (51 ) and of the second side (52) of the element (50), wherein said first screening means (12) and said second screening means (22) include an optical device (17), respectively, in turn containing a plate-like body (13) provided with colorless and light-diffusing impurities, said impurities adapted to modify the optical path of an input light beam which crosses said plate-like body (13), said plate-like body (13) also operatively coupled to at least one LED (120, 121, 122, 123).
Abstract:
Web supports (30, 32, 34, 36, 38, 330, 332, 334, 336, 338, 340) form a first web path (46, 48, 346, 348) in which a web is presented opposite to a camera (26, 326) and an alternative second web path (46, 48, 346, 348) in which the web (230) is overturned prior to being presented opposite to the camera (26, 326).
Abstract:
Systems and method for monitoring semiconductor wafer fabrication processing, for example based upon EBR line inspection, including capturing at least one image of a wafer at an intermediate stage of fabrication. The captured image(s) are compressed to generate a composite representation of at least an edge zone of the wafer. An edge bead removal area is identified in the representation, and at least one feature attribute is extracted from the identified area. The extracted feature attribute is automatically assessed, and information relating to a status of the fabrication processing in generated based upon the assessment. For example, recommended modifications to the fabrication processing, either upstream or downstream of the current stage of fabrication (or both) can be generated and implemented.
Abstract:
A lighting configuration that is a combination of far dark field lighting and a modified dark stripe lighting is disclosed. The novel combination provides a more robust detection of flaws on, e.g. a moving web of transparent film, than either would provide alone or through a summation of their individual parts.