One thing to keep in mind in all of this discussion is that the IR spectrum
is pretty wide. A regular CCD camera (without IR filter) is sensitive to
the type of IR emitted by an IR LED,that is,near-IR. It is just below the
frequency of visible red light and corresponds to a VERY hot object's
emission (>1000 K, I think).

This is NOT the same freq. of IR that is used by passive IR nightvision
goggles, FLIR, heat-seeking missiles (just had to add this because I just
finished playing Falcon 4.0, a GREAT combat flight sim),etc. That is in the
multi-micrometer range,and is emitted by near room temp objects (as well as
engines, people, animals, hot ground, etc.) These sensors are somewhat
exotic because they often need to be cooled (especially if you want to pick
up heat from animals,etc.,anything not much hotter than ambient)

SO, if you want to make a passive night-vision IR scope, you will need
special equipment that is sensitive to the middle region of the IR
spectrum. If you want an active IR scope (with its own IR spotlight),then
you can use a standard CCD and an IR led array. If you want a starlight
scope, you need an image intensifier, which are available surplus (but I'm
not sure of the price).

Sean

At 09:32 PM 11/5/99 -0500, you wrote:
>ITT makes night vision goggles and camera attachments.  They are
starlight, not IR.  TI makes good IR cameras with a video out that
>can attach to a VCR.  Do a search for Information Unlimited's site for
homebrew IR image converters.
>
>Mike M wrote:
>
>> anyone have any links or ideas on how to build an infrared
camera/nitevision attatchment to a regular video camera if possible???
>>
>> Send someone a cool Dynamitemail flashcard greeting!! And get rewarded.
>> GO AHEAD! http://cards.dynamitemail.com/index.php3?rid=fc-41
>
|
| Sean Breheny
| Amateur Radio Callsign: KA3YXM
| Electrical Engineering Student
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