What Flexible Opaque Black Material is Best for Light Shrouding?

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The discussion focuses on finding a flexible, opaque, black material suitable for light shrouding between a spectrometer and camera. Users suggest alternatives like closed-cell neoprene foam, which is effective when compressed, while cautioning against PVC electrical tape due to its transparency in the infrared spectrum. The conversation also touches on the need for more details about the specific requirements for the material. Humor is interspersed throughout the thread, but the primary concern remains the search for an optimal light-shrouding solution. Overall, the participants are seeking practical recommendations for readily available materials.
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I'm looking for a material to use as a light shroud for a joint between a spectrometer and camera. Basically, I want something that is flexible, opaque, black, and fairly thin and not too fragile and something I can readily buy. Do you know any such material? I have used Poron foam before which works ok but I'm wondering if there is something better.
 
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Electrical tape?
 
I use closed-cell neoprene foam. Used as a gasket, when lightly compressed it is very effective.

PVC electrical tape is completely transparent beyond about 900nm - you can see right through it with an IR viewer, so I would avoid that.
 
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Khashishi said:
I'm looking for a material to use as a light shroud for a joint between a spectrometer and camera. Basically, I want something that is flexible, opaque, black, and fairly thin and not too fragile and something I can readily buy. Do you know any such material? I have used Poron foam before which works ok but I'm wondering if there is something better.

Fabric?
 
Daz said:
PVC electrical tape is completely transparent beyond about 900nm - you can see right through it with an IR viewer, so I would avoid that.
Hrm. OP didn't mention IR.

Perhaps we could use more details.
 
Daz said:
PVC electrical tape is completely transparent beyond about 900nm - you can see right through it with an IR viewer, so I would avoid that.
PF needs an award for totally fascinating and potentially useful cool trivia that only a true geek can appreciate.
 
Daz said:
That's why I always take my IR viewer along when shopping for new clothes! (Now there's a true geek!)
Or a perv...:biggrin:
 
Oooo that back-fired, didn't it? I was only joking, of course; I don't really take it.

At least, not since the court case. My probation officer won't allow it.

Still joking. REALLY! JUST JOKING!
 

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