[Laser] Re : Re : "How to" page for laser pointer communications now online

[Chuck Hast]

On Fri, Apr 16, 2010 at 12:30,  <f1avyopto at aol.com> wrote:
>
> Hi Tom
> We use this very low cost video cam.
> http://www.pearl.fr/securite/video-surveillance/cameras/mini-camera-cmos-infrarouge-audio_S4044.html
> The global sensitivity is near 0.2 lux.
> The best spectral response is from 650 nm to 800 nm.
> You have to cut the IR LEDs wires and to change the native 3 mm objective by a well bigger one.
> The new objective can be from a photo surplus equipement (e.g. old photo standard 42 mm fitted with a made by yourself adaptator.)
> The 10 cm lens we used is from a military surplus.
> It is an old bomber aiming device.
> It has a very short focal lens (around 10 cm => F/0;9) and it is fitted with a 45° mirror for a lateral output.
> 73 Yves F1AVY
>
Tom, Yves,
I purchased the same (hardware sure looks the same) camera at
CompUSA (Tiger Direct) for about $16USD. This little camera appears
to be pretty common out there. For the price it does a good job. I use
it to test some frame grabber cards out, but I have used it to test for
lighting in some places where plan to put a cam.

-- 
Chuck Hast  -- KP4DJT --
When the righteous are in authority, the people rejoice: but when the
wicked beareth rule the people mourn.  Prov 29:2 KJV
-----

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