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Superbowl 3D glasses - congo blue? Answered

Remember the 3d glasses that everyone got for the commercial Monsters vs. Aliens during the Superbowl this year (09)? They were paper, blue colored, mnfctrd by Intel, and the "lenses" were amber and some kind of dark blue.

What I was wondering was if that blue was Congo blue (LEE C181, like in Kipkay's IR goggles ible), so I could use them in making nightvision goggles.

Info that might help - patent number 6687003

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lemonieBest Answer (author)2009-07-16

They're not real nightvision goggles, so I'd advise that you just try it and see. L

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MadBricoleur (author)lemonie2009-07-17

What I wanted to do was, from the infrared goggles, make xray goggles using a piece of film over the front (i saw it in some youtube/metacafe video, but I forgot its link, sorry). Would that work? I've read that night vision devices such as monoculars and such (and the camcorder demonstrated in the youtube video) use a light intensifier that projects it onto a phosphor screen (please note - I'm just copying what I saw on that website, I don't really know what it fully means), so I wasn't sure in the first place on whether simple nightvision goggles would work. Can someon please shed some more light (please excuse the pun) on the subject? :D. Oh, and thanks for the quick replies, lemonie and "somebody"InParticular hahaha

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lemonie (author)MadBricoleur2009-07-17

Night vision works in one of two ways: Either you view in the (invisible to human eye) infra-red, or you use image-intensifiers to amplify what light there is. A filter won't do it, but a modified video-camera might (IR) L

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MadBricoleur (author)lemonie2009-07-17

Hmmm... okay. :D thanks for all the help, lemonie! I'll try doing that with my webcam.

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lemonie (author)MadBricoleur2009-07-18

The charge coupled devices (CCDs) in digital cameras are sensitive to infra-red, but usually have an infra-red filter blocking this (so the images don't look funny). If you take the web-cam apart, you may be able to find and remove the filter - and floodlight the area with IR.
https://www.instructables.com/id/infrared-digital-camera---the-real-way/
https://www.instructables.com/id/Super-Nightvision-Headset-Hack/

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NobodyInParticular (author)2009-07-16

As Lemonie points out, the Instructable that you are referring to is how to make infrared-passing goggles, not how to make goggles that convert infrared to colors that your eyes are more sensitive to (night-vision goggles).

The patent document you mention is a bit difficult for me to decipher. But I see on those transmission graphs that one of the filters has high transmission beyond 700nm (IR) and except for a slight bump, low transmission of other colors.

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