Title :
A new architecture for TOF-based range-finding sensor
Author :
Stoppa, David ; Viarani, Luigi ; Simoni, Andrea ; Gonzo, Lorenzo ; Malfatti, Mattia
Author_Institution :
ITC-irst, Trento, Italy
Abstract :
This paper describes the design and characterization of a linear array for 3D measurements based on both multiple-pulse indirect-time-of-flight (ITOF) and optical triangulation (OT) techniques. The 128-pixel array has been fabricated in a standard 0.35-μm, 3.3-V CMOS technology and the chip dimensions are 4.5×3.3-mm2. The distance measurement with cooperative targets in the 2-8 m range has been successfully performed with a worst case precision better than 4 cm in the ITOF modality. Preliminary test confirmed also the validity of the OT mode, reporting a depth resolution of 100 μm at 1 m.
Keywords :
CMOS image sensors; laser ranging; optical radar; time-of-arrival estimation; 0.35 micron; 1 m; 128 pixel; 2 to 8 m; 3.3 V; 3.3 mm; 3D measurements; 4.5 mm; CMOS; ITOF-based range-finding sensor; depth resolution; distance measurement; laser radar; linear pixel array; multiple-pulse indirect-time-of-flight method; optical sensor; optical triangulation; CMOS technology; Distance measurement; Optical arrays; Optical design; Optical design techniques; Optical sensors; Performance evaluation; Semiconductor device measurement; Sensor phenomena and characterization; Testing;
Conference_Titel :
Sensors, 2004. Proceedings of IEEE
Print_ISBN :
0-7803-8692-2
DOI :
10.1109/ICSENS.2004.1426205
