| Author |
Message |
Sonic
Guest
|
 Posted:
Sat Sep 11, 2004 12:28 pm Post subject:
Webcams and IR lighting. |
|
|
Hiya,
hopefully this is the place to ask this question.
I'm paying with a couple USB2 Trust webcams (380 space cam), making a
bit of a CCTV system for our garage.
Now these work ok in day light, but can't see anything when dark.
If I have a bank of IR LEDs, or something that lights in IR, would the
webcam be able to 'see' in the dark, or do I need a filter on the
lens?
Thanks for any comments
--
Dan Allen
*******************************************
* Nothing is illegal until you get caught!*
******************************************* |
|
| Back to top |
|
 |
Javier
Guest
|
| Posted:
Sat Sep 11, 2004 3:53 pm Post subject:
Re: Webcams and IR lighting. |
|
|
You would need no filter at all. Just IR lasers of the right wavelength,
well within the spectral response of the CCD and well outside the spectral
response of the eye... Of course, the reach of your 'night seeing' will be
limited by the power of your 'IR torchlight'.
Rgds
Javier
"Sonic" <dan@corned.beef.valvesunlimited.demon.co.uk> escribió en el mensaje
news:bhd5k0loga3gtjvg1udj1fmb0i7gqkj1eg@4ax.com...
| Quote: | Hiya,
hopefully this is the place to ask this question.
I'm paying with a couple USB2 Trust webcams (380 space cam), making a
bit of a CCTV system for our garage.
Now these work ok in day light, but can't see anything when dark.
If I have a bank of IR LEDs, or something that lights in IR, would the
webcam be able to 'see' in the dark, or do I need a filter on the
lens?
Thanks for any comments
--
Dan Allen
*******************************************
* Nothing is illegal until you get caught!*
******************************************* |
|
|
| Back to top |
|
|
Si Ballenger
Guest
|
| Posted:
Sat Sep 11, 2004 7:56 pm Post subject:
Re: Webcams and IR lighting. |
|
|
On Sat, 11 Sep 2004 09:28:10 +0100, Sonic
<dan@corned.beef.valvesunlimited.demon.co.uk> wrote:
| Quote: | Hiya,
hopefully this is the place to ask this question.
I'm paying with a couple USB2 Trust webcams (380 space cam), making a
bit of a CCTV system for our garage.
Now these work ok in day light, but can't see anything when dark.
If I have a bank of IR LEDs, or something that lights in IR, would the
webcam be able to 'see' in the dark, or do I need a filter on the
lens?
Thanks for any comments
|
If your main interest is in the dark, it might be better to buy
the cheap B/W cams that are made for working with IR. Many
daylight cams have IR filters installed to specifically block out
IR for a better pix. Some cheap cam sources below.
http://www.supercircuits.com/
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=47546 |
|
| Back to top |
|
|
Sonic
Guest
|
| Posted:
Sun Sep 12, 2004 12:09 pm Post subject:
Re: Webcams and IR lighting. |
|
|
On Sat, 11 Sep 2004 15:56:18 GMT, I was awakened from a daze by
shb*NO*SPAM*@comporium.net (Si Ballenger) in alt.comp.periphs.webcam
who caused me to spill hot coffee on my keyboard by writing the
following:
| Quote: | On Sat, 11 Sep 2004 09:28:10 +0100, Sonic
dan@corned.beef.valvesunlimited.demon.co.uk> wrote:
Hiya,
hopefully this is the place to ask this question.
I'm paying with a couple USB2 Trust webcams (380 space cam), making a
bit of a CCTV system for our garage.
Now these work ok in day light, but can't see anything when dark.
If I have a bank of IR LEDs, or something that lights in IR, would the
webcam be able to 'see' in the dark, or do I need a filter on the
lens?
Thanks for any comments
If your main interest is in the dark, it might be better to buy
the cheap B/W cams that are made for working with IR. Many
daylight cams have IR filters installed to specifically block out
IR for a better pix. Some cheap cam sources below.
http://www.supercircuits.com/
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=47546
|
Thanks for the info,
I'll have a play and see what happens:-)
--
Dan
Dan Allen
*******************************************
* Nothing is illegal until you get caught!*
******************************************* |
|
| Back to top |
|
|
|
|
|
|
FAQ
Memberlist
Register
Profile
Log in to check your private messages
Log in