title: 3D scanning characteristics of an amorphous silicon position sensitive detector array system.
abstract: The 3D scanning electro-optical characteristics of a data acquisition prototype system integrating a 32 linear array of 1D amorphous silicon position sensitive detectors (PSD) were analyzed. The system was mounted on a platform for imaging 3D objects using the triangulation principle with a sheet-of-light laser. New obtained results reveal a minimum possible gap or simulated defect detection of approximately 350 μm. Furthermore, a first study of the angle for 3D scanning was also performed, allowing for a broad range of angles to be used in the process. The relationship between the scanning angle of the incident light onto the object and the image displacement distance on the sensor was determined for the first time in this system setup. Rendering of 3D object profiles was performed at a significantly higher number of frames than in the past and was possible for an incident light angle range of 15 ° to 85 °.
authors.affiliation: 1CENIMAT/I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
authors.forename: Javier
authors.initials: J
authors.lastname: Contreras
authors.forename: Luis
authors.initials: L
authors.lastname: Gomes
authors.forename: Sergej
authors.initials: S
authors.lastname: Filonovich
authors.forename: Nuno
authors.initials: N
authors.lastname: Correia
authors.forename: Elvira
authors.initials: E
authors.lastname: Fortunato
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Martins
authors.forename: Isabel
authors.initials: I
authors.lastname: Ferreira