Home video camera/TV remote control

[Dan Beck]

Hello all,

Awhile back I read somewhere that you can observe the IR signals from your
TV remote through the eyepiece of your home video camera. Being the
underinformed skeptic I did attempt this, and sure enough, I was able to see
the signals. Can someone offer an explanation for this phenomenon?

Thank you in advance for reading.

Regards,
Dan

 

[Luhan Monat]

Dan Beck wrote:

Hello all,

Awhile back I read somewhere that you can observe the IR signals from your
TV remote through the eyepiece of your home video camera. Being the
underinformed skeptic I did attempt this, and sure enough, I was able to see
the signals. Can someone offer an explanation for this phenomenon?

Thank you in advance for reading.

Regards,
Dan


Real simple, Dan.

The sensors (CCD's) used in today's camcorders respond very well in the
short infrared range as well as in the visible spectrum.

--
Luhan Monat, "LuhanKnows" At 'Yahoo' dot 'Com'
http://members.cox.net/berniekm
"The future is not what it used to be."

 

[Jim Large]

Luhan Monat wrote:

Dan Beck wrote:

Hello all,

Awhile back I read somewhere that you can observe the
IR signals from your TV remote through the eyepiece
of your home video camera. [...] Can someone offer an
explanation for this phenomenon?

The sensors (CCD's) used in today's camcorders respond
very well in the short infrared range as well as in the
visible spectrum.

So well, in fact, that most^H^H^H^Hall color video cameras
have an IR blocking filter. The Filter is not perfect,
the CCDs are very sensitive, and the IR remote is very
bright; so the O.P. is seeing the little bit of infrared
that leaks through.

Try the same thing with a SONY video recorder in "Night
Shot" mode (slides the IR blocking filter out of the way)
and your IR remote will light up the room like a
flashlight.

Don't ask me how I know.

-- Jim L.

 

[Dan Beck]

Thank you for your time!

Dan