ir led reflection on glass

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lithod02
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Joined: Wed Aug 09, 2006 7:46 pm

ir led reflection on glass

Post by lithod02 »

Is there anyway to get rid of the reflection of the leds reflecting off the glass inside a window?
Maybe some kind of film I can put up?
Any help would be appreciated.


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lazyleopard
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Location: Gloucestershire, UK

Post by lazyleopard »

To mis-quote Scotty: "Ye canna change the Laws of Physics, Capt'n" ;)

Anti-reflection coating is an expensive business, even assuming it's possible. Anything that dulls the reflection is likely to make the lighing even less effective. Your best bet is to get the LEDs to other side of the glass, if possible. If not, see whether you can get the camera close enough to the glass that the LEDs don't reflect back into its lens. Other than that, or using a viewing angle that avoids the reflections, there's not much you can do.
Rick Hewett
lithod02
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Joined: Wed Aug 09, 2006 7:46 pm

Post by lithod02 »

lazyleopard wrote:To mis-quote Scotty: "Ye canna change the Laws of Physics, Capt'n" ;)

Anti-reflection coating is an expensive business, even assuming it's possible. Anything that dulls the reflection is likely to make the lighing even less effective. Your best bet is to get the LEDs to other side of the glass, if possible. If not, see whether you can get the camera close enough to the glass that the LEDs don't reflect back into its lens. Other than that, or using a viewing angle that avoids the reflections, there's not much you can do.
I have tried the different viewing angle to not catch the leds, but at night it shows them pretty much anywhere. I will try getting it closer to the glass and see if that works. Thanks for the idea.
jameswilson
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Location: Midlands UK

Post by jameswilson »

Internal reflection is a problem with glass, you will need to get the lens sealed from the other parts of the glass with a rubber collar and get the cam right up to the glass
James Wilson

Disclaimer: The above is pure theory and may work on a good day with the wind behind it. etc etc.
http://www.securitywarehouse.co.uk
lithod02
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Joined: Wed Aug 09, 2006 7:46 pm

Post by lithod02 »

jameswilson wrote:Internal reflection is a problem with glass, you will need to get the lens sealed from the other parts of the glass with a rubber collar and get the cam right up to the glass
I had thought about making a cone from cardboard and using a large nylon washer to rest the cone against the glass. I guess this would be my best option. Will let ya'll know how it goes.
thx
jameswilson
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Location: Midlands UK

Post by jameswilson »

If you dont need the leds you could just cover them wioth tape
James Wilson

Disclaimer: The above is pure theory and may work on a good day with the wind behind it. etc etc.
http://www.securitywarehouse.co.uk
kilobit
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Joined: Sun Aug 27, 2006 2:53 pm

Post by kilobit »

An easy fix for this problem is to put a polorizer on the camera. Then the glare would be gone. Same with my SLR camera.
NiGlim
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Internal reflection

Post by NiGlim »

A walk around is to have a IR-Cutt filter then you dont see the light from the LEDs.......and you don´t need to have any LEDs anyway:)


/NiGlim
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