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Re: [Paparazzi-devel] SMT IR sensors?

From: address@hidden
Subject: Re: [Paparazzi-devel] SMT IR sensors?
Date: Tue, 29 Jul 2008 17:45:19 GMT

Wow, great find Uttam!  I beleive the "5.5um long pass filter" will allow 
everything longer (like the 8-12um we are interested in) and block anything 
shorter, like light.  Exactly what we want.

These are certainly small and have a great 120 deg FOV and similar sensitivity 
to what we typically use (42uV/K).  The small analog version would need the 
same mounting and circuitry that we currently use but the digital (TPMI) 
version could potentially be mounted individually.  Martin has been doing some 
flight testing of the larger PerkinElmer TPMI module and may chime in with his 
results so far.

The bad news is that PerkinElmer released Martin's TPMI module years ago but 
initially wanted $60/ea in large quantites.  It wasn't until more recently that 
he was able to get them at a reasonable price, and still I think they are quite 
difficult to find/purchase.
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Hi guys,

Just last night I was thinking of SMT IR Thermopiles, and a google resulted in this:

It's pretty small, just 4mm*4mm. The PDF says 5.5mM Cut-on wavelength. What is Cut-on Wavelength? Cut's off everything under 5.5mM?


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