Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
SPECIAL ANNOUNCEMENT
2016 Photonics Buyers' Guide Clearance! – Use Coupon Code FC16 to save 60%!
share
Email Facebook Twitter Google+ LinkedIn Comments

Integrating Cylinder Improves Smoke Detector

Photonics Spectra
Mar 2003
At Gunma University in Kiryu, Japan, researchers have demonstrated that the use of an integrating cylinder as a light collector improves the sensitivity and linearity of optical smoke detectors. They reported their findings in the Jan. 1 issue of Applied Optics.

In the experiments, they monitored the transmission of 460-nm light from an LED through a 140-mm-long, 10-mm-diameter cylinder coated with flat interior house paint. Evaporated stearic acid served as a source of smoke. Compared with an LED and photodiode alone, the enhanced system displayed a higher detection sensitivity and better linearity and stability in the output signal.


GLOSSARY
sensitivity
In a radiation detector, the ratio of the output to the input signal.
Comments
Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2016 Photonics Media
x Subscribe to Photonics Spectra magazine - FREE!