Title :
Digital optical position-sensitive detector (PSD)
Author :
Mäkynen, Anssi ; Rahkonen, Timo ; Kostamovaara, Juha
Author_Institution :
Dept. of Electr. & Inf. Eng., Oulu Univ., Finland
Abstract :
A digital position-sensitive detector (PSD) is proposed and its performance compared with a conventional lateral effect PSD (LEP). Comparison shows that the digital PSD provides equal accuracy but better sensitivity and lower power consumption at low measurement rates. It is also anticipated that the ongoing decrease in minimum feature size of CMOS technology will further improve the performance of the digital PSD.
Keywords :
CMOS image sensors; low-power electronics; position measurement; VLSI CMOS technology; active pixels; area array; camera-based approach; detector performance; digital position-sensitive detector; laser-based alignment sensing; low measurement rates; low-resolution binary image; lower power consumption; optical position-sensitive detector; triangulation based distance measurements; CMOS image sensors; CMOS technology; Capacitance; Circuits; Image edge detection; Optical detectors; Optical sensors; Optical signal processing; Position sensitive particle detectors; Threshold voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE
Print_ISBN :
0-7803-8248-X
DOI :
10.1109/IMTC.2004.1351567
