Society of Robots - Robot Forum
Electronics => Electronics => Topic started by: sky099 on March 21, 2008, 08:54:16 PM
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Hi, just wanted to ask a quick question about a Sharp IR Range Finder, we wanted to know if one of these would be able to read or bounce off IR light from a transparent acrylic surface, as in transparent walls. We're kinda stuck on that info, thanks in advance
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never tested on a transparent surface why dont u test it and find it out
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I have tested it on Lexan which is a clear plastic(like plexiglass only stronger) and the IR did not detect it. So it goes right through lexan. Hope that helps
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I have tested it on Lexan which is a clear plastic(like plexiglass only stronger) and the IR did not detect it. So it goes right through lexan. Hope that helps
yep thats true
for my robocup junior competition I found out the walls were plexiglass and switched out my IR for sonar
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its obvious ir still is just light so it will pass through transparent sufaces
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its obvious ir still is just light so it will pass through transparent sufaces
not necessarily
some materials that appear translucent to us in the normal light spectrum, are solid to IR light. Like you ever notice on a remote control box you have like semitransparent dark plastic. Well you can't really see through it but IR goes straight through.
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well there are exceptions
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some materials that appear translucent to us in the normal light spectrum, are solid to IR light.
(opaque, not solid) . . . but yes, exactly. There are transparency charts for materials vs. spectrum around if you just google around for it.
I can tell you for certain that glass is transparent, water is translucent, and snow is opaque in the IR spectrum.
The general rule of thumb is: anything that absorbs heat easily/quickly is opaque in IR.
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wont glass absorb heat if it is heated??
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wont glass absorb heat if it is heated??
it wont heat up quickly like metal
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still i dont think admin's explanation is complete