Infra Red Light Possible?

16 posts / 0 new
Last post
NewbieNewbieNewbie
Online
Last seen: 10 min 30 sec ago
Joined: 07/17/2020 - 15:21
Posts: 22
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
Offline
Last seen: 20 min 40 sec ago
Joined: 05/18/2020 - 09:57
Posts: 237
Location: wso

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
Online
Last seen: 10 min 30 sec ago
Joined: 07/17/2020 - 15:21
Posts: 22

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
Offline
Last seen: 3 hours 23 min ago
Joined: 08/28/2013 - 03:56
Posts: 968
Location: Corio, Victoria, Australia

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
LumenHound's picture
Offline
Last seen: 15 hours 5 min ago
Joined: 07/15/2011 - 09:29
Posts: 261
Location: Toronto

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
Online
Last seen: 12 min 20 sec ago
Joined: 02/25/2016 - 17:38
Posts: 371
Location: Uruguay

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
Offline
Last seen: 11 hours 15 min ago
Joined: 10/28/2019 - 12:14
Posts: 61
Location: US

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
Offline
Last seen: 11 hours 15 min ago
Joined: 10/28/2019 - 12:14
Posts: 61
Location: US

With incandescent surefires, if that wasn’t obvious.

hank
hank's picture
Offline
Last seen: 4 hours 4 min ago
Joined: 09/04/2011 - 21:52
Posts: 9167
Location: Berkeley, California

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
kennybobby's picture
Offline
Last seen: 6 hours 1 min ago
Joined: 05/10/2017 - 09:13
Posts: 345
Location: huntspatch, alabama

@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?

Favorite Song = "Flashlight" (BLF of course, with a righteous bass)
https://youtu.be/gCTGMIXaD64

Exercise and Training:
My typical training routine: https://youtu.be/_aVASp9raMk
Morning Workout: https://youtu.be/ZEA_3yXG570

Remember Don't Do Drugs...
without me: https://youtu.be/oVKtxHTcnho

ggf31416
Online
Last seen: 12 min 20 sec ago
Joined: 02/25/2016 - 17:38
Posts: 371
Location: Uruguay

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
Lightbringer's picture
Offline
Last seen: 38 min 21 sec ago
Joined: 08/30/2016 - 14:12
Posts: 11779
Location: nyc

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
Offline
Last seen: 46 min ago
Joined: 06/17/2019 - 08:55
Posts: 221
Location: U.S.A.

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

NewbieNewbieNewbie
Online
Last seen: 10 min 30 sec ago
Joined: 07/17/2020 - 15:21
Posts: 22

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
Offline
Last seen: 46 min ago
Joined: 06/17/2019 - 08:55
Posts: 221
Location: U.S.A.

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

ggf31416
Online
Last seen: 12 min 20 sec ago
Joined: 02/25/2016 - 17:38
Posts: 371
Location: Uruguay

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.