Infra Red Light Possible?

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Infra Red Light Possible?

Hi to all the respected, experienced members

First I must thank everyone for the excellent previous advice in the past.

I was hoping to ask you all if it is possible to fit an attachment to a flash light to change it into infra red light?

This is to enhance night vision with a night vision device on a farm.

Does anyone know if this is possible and how?

I have purchased the Haikelite MT40 (not arrived yet), but is there an attachment to change it to an infra red light?

May I ask, with regard to an infra red light, I know this is not visible to the human eye, BUT is there redness around the glass of the flashlight? In other words ideally, one does not want an intruder to see this or a predator on the farm.

Thank you again to everyone.

Regards

Peter

 

 

2A
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When you say “attachment”, do you mean an external device or something like a lens?

Or multi-emitter flashlights where you can select a different LED for IR?

NewbieNewbieNewbie
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Hi 2A

To be honest I am totally new.

I do not know if it is a lens or attachment, but would highly appreciate the advice in terms of how to change a flashlight to make it give infra red light (as opposed to having to buy an infra red flash light, unless you think the "modification" will cost more than simply just buying an infra red flash light. The throw distance is of course important).

 

Thank you to you and anyone else that can advise.

Kind regards

Peter

pommie
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Change the led to an infra-red led Big Smile
Please note this will probably require a driver change as well.
Not being a smart a##, the spectral range of red led’s do not go anywhere near the near infra-red range (720nm up to about 2500nm)

Cheers David

Nothing to see here folks, move along...

LumenHound
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Filters that would block visible light were used on old style incan bulb flashlights but they were expensive. You would be better off ordering a infra red led flashlight for use with a general purpose first generation night vision device.
Most infra red flashlights come with leds that emit light at 850nm and depending each individuals vision, can be noticable as a very faint red glow.
Predators like coyotes can not detect it though.
If you need light that’s not visable to humans then you should consider a flashlight with a 940nm led but these are not as bright to a lower cost night vision device.
They can often seem as much as 40% less bright so it’s a trade off you need to consider.

ggf31416
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A filter that changes visible light into infrared in a flashlight probably would surely be rather expensive if such material leaves the lab, maybe it would even be covered in the same patent that affects filtered UV flashlights even if that patent most likely is invalid. A filter that simply blocks visible light would be useless in a LED.

In short, you need another flashlight.

extremesquared
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Military used loads of ir flip filters on surefires a ways back. Another ten years, they’ll probably show up as surplus. As far as I know, that setup has been deprecated.

extremesquared
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With incandescent surefires, if that wasn’t obvious.

hank
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You just want a big heat source. Try getting a cast iron skillet hot on the stove, then take it outside and use it as a floodlight for your infrared night vision device.

Oh, wait, are night vision devices even infrared? Or are they just light amplifiers?

kennybobby
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@Newbie,

i’m guessing that you want to be able to see someone or something without being detected at night on the farm.

How far away do you need or want to be able to see?

i suppose you are wanting a portable source beam, but could it be fixed?

Do you already have night vision goggles or some other viewing device?

Now i used to think that i was cool,
drivin' around on fossil fuel,
until i saw what i was doin',
was drivin' down the road to ruin. --JT

ggf31416
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I think NV devices work with some preset frequently 850nm or 940nm. They aren’t thermal images, just heat won’t work.

Edit: I need to research, not write speculation.

In a flashlight you want something with an osram IR LED, 4715 or 4725 but it rarely says the LED model. There are also similar LEDs from Luminus and Lumileds but I haven’t seen them in commercial products. Many of them are zoomable IR flashlights, I guess something like a C8 could work better at long range. From the available flashlights in AliExpress or Kaidomain I’m not sure which one is better. Neither Convoy nor Sofirn sell them.

Lightbringer
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All you need is a cellphone to “see” in IR. IRLEDs on cameras will show up as a pale blue if you get a live-view as if wanting to snap a pic.

09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

lightdecay
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If you search for acebeam 850nm on eBay, you can get an Acebeam T27 with Osram 850 nm IR LED.

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Hi All

 

First, I must thank everyone. I can see I am in the company of the wise here, and I highly appreciate it.

 

LumenHound and kennybobby and everyone else, thank you.

It looks like you are saying I must buy the infra red flashlight thrower (can't use a fixed source), but someone was saying I must aim for a different wavelength so that humans cant see it.

 

I do not have the night vision goggles because I thought if I get an infra red light source, then I can buy a cheaper night vision device, BUT I am also a newbie in this field.

Does anyone perhaps know if these cheap night vision Chinese devices such as this one below at Amazon will work with the infra red flash light:

https://www.amazon.com/Monocular-Telescope-Waterproof-Smartphone-Watching/dp/B0873647FM/ref=pd_sbs_201_42?_encoding=UTF8&pd_rd_i=B0873647FM&pd_rd_r=eb482eac-279a-4118-af87-b99ab358d9b1&pd_rd_w=cUTbG&pd_rd_wg=KaL4L&pf_rd_p=0b2db3d1-33eb-418a-9672-bb9bd54808e8&pf_rd_r=1GHFJP2YYQJBEQJQS21H&refRID=1GHFJP2YYQJBEQJQS21H&th=1

 

OR  

 

https://www.amazon.com/dp/B088CT92PX/ref=sspa_dk_detail_3?psc=1&pd_rd_i=B088CT92PX&pd_rd_w=3N0MS&pf_rd_p=48d372c1-f7e1-4b8b-9d02-4bd86f5158c5&pd_rd_wg=y3qXD&pf_rd_r=7C4B72VW5P4TW8TQBJN2&pd_rd_r=c0337c6b-18d3-461b-8b86-579af56a94ee&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFWTEpPNkgyMzYwM0gmZW5jcnlwdGVkSWQ9QTEwNDMxMDBSRTBHSDVaU1ZZVDcmZW5jcnlwdGVkQWRJZD1BMDcyODk1ODFHT0RGQUpYTEVKU0cmd2lkZ2V0TmFtZT1zcF9kZXRhaWwmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl

 

They have a powerful magnification, but will it work with an infra red flashlight OR are these not quite generation 1 (and more of a gimmick from China)?

 

The distance on the farm I would like to see is about 1000 metres (1093 yards).

Thank you again to everyone.

Regards

Peter

 

 

lightdecay
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1000 meters? Why so far? What is the use case?

ggf31416
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I really don’t want to live in NNN place, I prefer my peaceful urban live where I don’t need to confront intruders in regular basis.

But seriously, there are some questions that could be better suited for a dedicated night vision place like NightVisionForumUK or r/NightVision in Reddit, some members here have NV knowledge but in dedicated places you may be able to get more help.

pirate joe 22
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A simple IR filter lens in place of your flashlight lens will do the trick.

hank
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Ne…Ne…Ne…

The second Amazon link you asked about gives you low light vision because the light gathering lens is a lot bigger than your eyeball. Any ‘night vision’ optic works like that. There’s no electronics in that, nothing to enhance infrared light.
Look at the bottom of the listing, it says

Quote:
This item can work in a dimly night, but, it cannot work in a totally dark night, pls kindly note it before purchase!

The first Amazon item appears to have a flashlight mounted on top, and the illustration shows green-tinted pictures which appear to look like an infrared amplifier.
I say appear. Look way down at the small print and it says:

Quote:
❀Note:It is a kind of low-light level night vision telescope which means it can be used for night vision with some light ,

❀but can not be used for totally pitch-black night vision.

Nowhere does it claim to be an infrared light amplifier,.
Caveat emptor. Just assume most of what’s promoted for sale is trying to deceive you.

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Hank you are indeed brilliant!

 

I must thank you for this.

 

The idea was to buy a cheap night vision device, then to enhance it with an infra red flashlight because these night vision devices can be extremely pricey when adding on import taxes.

 

Do you or anyone with knowledge on this topic know if this cheap night vision device below will be enhanced by an infrared flashlight thrower in terms of furthering the distance of the night vision scope (or is this scope below also another gimmick from China?). Here is the link:

 

https://ashcomonline.co.za/product/ashcom-red-laser-sight-vane-hunting-scope-for-outdoor-rifle/

 

pirate joe 22 you mentioned a simple Infra red filter lens. Where does one source this from and and must this be held with one's free hand in front of the flashlight? I am a total newbie LOL. Thank you for the advice.

 

Thank you to ggf31416 (by the way its not as easy to get membership at the nightvisionforumuk as it is here; the members here have been most welcoming and most helpful; its most likely American friendliness), and to lightdecay and everyone else for your help.

 

I must sincerely thank everyone again.

 

Regards

 

Peter

ggf31416
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The product you linked looks like a red/green laser scope, no mention of night vision or infrared.

You are probably not getting anything useful under $100. If you search in YouTube for best cheap night vision under some amount, you get reviews for the NightFox 100V , $120 in Amazon. There are some alternative products in Amazon at about the same price range but anything below that is probably useless.

Edit: In OpticsPlanet you can find some other alternatives but I don’t see anything worthwhile that is cheaper.

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Hi ggf31416

Thank you kindly for your excellent advice. I wanted to get some advice regarding an infra red matter and am opening a new question about this. I hope I can get your expert opinion there please, and that of Hank and others.

Thank you to everyone

Regards

Peter

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I own a streamlight sidewinder. It had ir light on it. It has a white, red, blue,and ir you switch with a dial. The belt clip also has a portion to put it on a helmet. Hope this helps. You cannot see the ir light at all without night vision goggles. Nvg ruins your depth perception.