The near infrared reflective materials surfaces : dimensions and angles. | ||
| Journal of University of Anbar for Pure Science | ||
| Article 33, Volume 3, Issue 2, August 2009, Pages 116-123 PDF (107.37 K) | ||
| DOI: 10.37652/juaps.2009.15293 | ||
| Author | ||
| Fisal.A. Al-Bassam | ||
| Abstract | ||
| The near infra-red signals reflected by different surfaces are studied. The transmitted signals are reflected by different surface obstacles for varied distances among the receiver, reflector and remote controller. The infra-red transmitter transmits the operating signals indirect to the remote sensor. This provides guidelines for another proper way. The proper adjustment and installation positions, of reflecting surfaces display the signal on the screen of user as a flash. The experimental results indicate that the limiting distances of the remote controller and the reflecting surfaces depending upon types, colors the reflecting surfaces ,besides incident angle on these surfaces. By using transmission indicator ,we can decide if the signal is bad or good. It was noted that the increasing distances above the limit interrupt with the reception. Also the sensing ranges of IR or invisible laser radiation are decreasing when the reflected areas & reflectivity of obstacles decrease, but the maximum incident angles decrease when the surface have high reflectivity. The research benefits for purposes of limitation of targets and types of directional reflectors to download, natural sites of user activator and guidance, to determine the sites of system like space channels or video image. | ||
| Keywords | ||
| remote control; surface; reflectance; infra; red; receiver; sensor; transmitter; signal; distance; invisible Laser; incident angle | ||
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