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

fYear

2004

fDate

24-27 Oct. 2004

Firstpage

481

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-mm^2. 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2004. Proceedings of IEEE

Print_ISBN

0-7803-8692-2

Type

conf

DOI

10.1109/ICSENS.2004.1426205

Filename

1426205