night vision improvements ?

[ronan]

I know someone who bought one of the aldi/lidl night vision monoculars for watching wildlife and security use (same thing ) , anyway its not great , is there any way to improve its performance ? i know they rely on the infrared light, is there a cheap way to make a ir spotlight that runs on 12vdc ?

 

[bigegg]

ebay?

http://www.ebay.co.uk/itm/48-LED-Illuminator-Light-CCTV-IR-Infrared-Night-Vision-Lamp-For-Security-Camera-/300745191252?pt=UK_CCTV&hash=item4605cf6f54

 

[ronan]

ebay?

http://www.ebay.co.uk/itm/48-LED-Illuminator-Light-CCTV-IR-Infrared-Night-Vision-Lamp-For-Security-Camera-/300745191252?pt=UK_CCTV&hash=item4605cf6f54

good idea , but the range of that illuminator is only 20 metres, i was thinking a spot beam out to about 50m.

 

[Engineer1964]

How about this one

http://www.ebay.co.uk/itm/Outdoor-C...-/190665747958?pt=UK_CCTV&hash=item2c64906df6

Does upto 60m outdoors and 12 volts

 

[MattF]

Use a 12V dichroic lamp and whack a IR filter in front of it.

 

[Big Pete]

I thought the cheap night scopes were all image intensifiers, rather than passive IR. If they are IR then a spotlight with filter will help, but if they are image intensifiers then you need more ambient light, but it doesn' t need to be much.

 

[flash of light]

http://www.armlaser.com/high-power-400mw-808nm-infrared-laser-pointer-p-8.html

i have one of the bresser digital scopes if thats what you ar talking about, great value, i also have that above laser illumanator i use as a spotter at up to 400m.

 

[GeorgiePorgie]

Get a car filiment bulb and a dimmer switch,connect to a battery.

Mess about with the dimmer switch till the bulb is just glowing at the right spectrum for the night vision monocular.

don't know what the range might be though? prolly only close proximity?

Those IR lamps thats been posted do exactly the same,the glow a little at the correct spectrum.

 

[GeorgiePorgie]

http://www.ebay.co.uk/itm/48-LED-Se...-/140593653603?pt=UK_CCTV&hash=item20bc08e763

 

[ronan]

Thanks for the suggestions , the light or illuminator needs to be invisable for the security part of the job , no point trying to see someone creeping along a hedge and warning them off with a bright light.
The laser illuminator looks good and not crazy money.

 

[flash of light]

i have yet to see a led torch/ lamp thingy have a range of more than 20m, lasers give you massive range, down side is you need to treat them like a loaded gun and not point them at any one. i have two a 400 mw and a 90 mw which both have focus lens in, so you can have wide beam and dull or small and very bright.

 

[GeorgiePorgie]

the light

Which light you on about? the big one Gerry posted will glow ever so slightly,that is not easy to see from a distance,its only when close up.
Same goes for the one I posted.

 

[CompoSimmonite]

Thanks for the suggestions , the light or illuminator needs to be invisable for the security part of the job , no point trying to see someone creeping along a hedge and warning them off with a bright light.
The laser illuminator looks good and not crazy money.

For security a bright light will deter intruders far more than darkness and IR. Better to not have intruders in the first place than have them yet caught on CCTV ?

Paul H

 

[ps_bond]

I thought the cheap night scopes were all image intensifiers, rather than passive IR. If they are IR then a spotlight with filter will help, but if they are image intensifiers then you need more ambient light, but it doesn' t need to be much.

They are, but tubed or digital they're quite sensitive to the far-red/infra red wavelengths. I've also got one of the (tubed) Aldi scopes and for the money, it's fantastic. Yes, it's complete rubbish in comparison to the professional kit - but good enough for spotting rabbit eye shine out to 100m when using the illuminator.

 

[Wedg1e]

Anchor Supplies have a few ex-equipment image intensifiers around which you could build your own mil-spec sight...

http://www.anchorsupplies.com/electronics/image-intenisfer-tube-1st-generation.html

Bargain

 

[Robotstar5]

Anchor Supplies have a few ex-equipment image intensifiers around which you could build your own mil-spec sight...

http://www.anchorsupplies.com/electronics/image-intenisfer-tube-1st-generation.html

Bargain

I used to love going round there, proper aladins cave