Illumination source identification using a CMOS optical microsystem

Author

De Graaf, Ger ; Wolffenbuttel, Reinoud F.

Author_Institution

Dept. for Microelectron., Delft Univ. of Technol., Netherlands

Volume

53

Issue

2

fYear

2004

fDate

4/1/2004 12:00:00 AM

Firstpage

238

Lastpage

242

Abstract

An integrated silicon color sensor system has been designed and fabricated in CMOS without extra masks for color filtering. The application is in low-cost measurement of ambient light conditions, e.g., for display control in portable instruments, or for testing the intensity and spectral distribution of light sources. Signals proportional to the intensity and the spectral distribution of the incident light are available at the output in the form of two bit-streams. It is demonstrated that daylight can be distinguished from other light sources, such as incandescent lamps and fluorescent lamps.

Keywords

CMOS image sensors; elemental semiconductors; lighting; microsensors; silicon; CMOS optical microsystem; CMOS optical sensor; Si; ambient light condition measurement; bit-streams; color filtering; color measurement; daylight; display control; illumination source identification; integrated silicon color sensor system; intensity distribution testing; light sources; portable instruments; sigma-delta converter; spectral distribution testing; Displays; Filtering; Instruments; Light sources; Lighting control; Optical filters; Optical sensors; Sensor systems; Silicon; Testing;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2003.822476

Filename

1284850