Any regular FLIR-/thermal-imagers capable of looking through glass?

Many years ago, I understood from both theory and reality that thermal-
imagers were not capable of looking through (ordinary) glass windows, with
glass blocking just that (broad?) spectral range in which the imagers had no
sensitivity at all (hence also all using very expensive types of lenses
(opaque to the human eye).
But I also recall more than one type of imager, with different spectral
ranges, also requiring different lenses (still all in the heat-spectrum, but
quite far apart).

My question: Any imagers that can look through glass, past/present/future?

(I want to debunk a myth that recently appeared in Dutch media)
('burglars studying people indoors, in remote villa's, with military thermal-
sensor equipment')
(of course, still possible they also mixed up near-IR & thermcal, but near-IR
isn't as military-limited as it was 2 decades ago)

--
Bye,

Willem-Jan Markerink

The desire to understand
is sometimes far less intelligent than
the inability to understand

<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]
.

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