Old 06-26-2012, 04:32 PM #1
Junior Member
 
Join Date: Jun 2012
Posts: 3
Rep Power: 0
LukePerry085 is on a distinguished road
LukePerry085 LukePerry085 is offline
Junior Member
 
Join Date: Jun 2012
Posts: 3
Rep Power: 0
LukePerry085 is on a distinguished road
Default Long distance wide beam IR

Hello all, first of all let me applogize if I have posted in the wrong section, as this is my first post. I have been researching building my own long distance night vision (looking for something that will reach out to no less than 100yds, preferably more in the range of 300yds - the wider the view the better). I'm not terribly worried about it being eye safe, as I don't plan to ever employ it in an urban environment (I would like to use it for predator hunting - something that is legal at night in my state). I am very experienced in the various realms of electronics and mechanics, so repackaging digital camera internals into an eye apparatus (or preferably a dual eye apparatus) should be quite easy for me. This however leaves me with the choice of the IR light source that I will use.

When first tossing around ideas in my head I decided that normal IR LEDs would be insufficient for much more than lighting a large room, which lead me to think that an defocused IR laser would be my best bet. So here I am wondering what the best source is. I have read that CD writers generally have an IR laser diode in the 60mw range (I have since gutted 3 spare ones here at work and have been playing with them a bit), but then I have to source optics as well and good optics are not cheap, especially when you don't know exactly what you need, not to mention the fact that I'm not sure if 60mw is bright enough for what i'm trying to do. The other obvious option would be to get an IR laser pointer with an adjustable lens, which would offer several advantages: possibly brighter than 60mw, built in optics, built in driver. I do not know, however, if the built in optics would even spread the beam to the width that I'm looking for.

Any recommendations?


LukePerry085 is offline   Reply With Quote


















Old 06-26-2012, 11:19 PM #2
DrSid's Avatar
Class 3R Laser
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 154
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
DrSid DrSid is offline
Class 3R Laser
DrSid's Avatar
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 154
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
Default Re: Long distance wide beam IR

You can get some real cheap IR pointers with adjustable focus. Check this site:

808nm 220mW laser torch /adjustable/burning [OL808-200] - $39.00 : Zen Cart!, The Art of E-commerce

I don't have night vision, but AFAIK 200mW is way too strong. But with this price you can get idea about power needed. Also it's likely you would be able to use the optics at least for any weaker laser if needed.

Be warned though. IR lasers are dangerous, as the light is invisible. If it will be defocused, it would be fine, especially at distance, but it still be dangerous, especially to you, during experimenting, mounting and so on. It might also be strong enough to damage your night vision equipment with direct hit or reflection of glass/metal.
__________________
200mw (35mw compared) FocalPrice cheap green AA - Review
500mw (estimated) 445nm Minimalistic Orange Emos Direct Drive. Thread
1500mw (estimated) 445nm Jayrob's Solarforce L2P. Review

Last edited by DrSid; 06-26-2012 at 11:22 PM.
DrSid is offline   Reply With Quote
Old 06-27-2012, 04:34 PM #3
Junior Member
 
Join Date: Jun 2012
Posts: 3
Rep Power: 0
LukePerry085 is on a distinguished road
LukePerry085 LukePerry085 is offline
Junior Member
 
Join Date: Jun 2012
Posts: 3
Rep Power: 0
LukePerry085 is on a distinguished road
Default Re: Long distance wide beam IR

Thanks for the link. I ordered that, now we'll see how it works for my needs. Thanks also for the IR laser safety warning, something that I have read about and will treat with the utmost of care.

I was reading an article that somebody was doing something similar to what I am (except that it was for camera use) and found that using a laser of similar mW rating with an adjustable lense he was able to get a 10ft spread at 50 ft of distance. It seems to me that this would be a linear scale, so I should see a 60ft spread at 100yds if my logic is correct. This was not enough for him, who was looking for a long distance flood light, but I think that may be very sufficient for my requirements, as something a bit more like a spotlight may be okay. If not, I can do optical tuning like he did, which is what was able to get him the shown spread at 100ft:

LukePerry085 is offline   Reply With Quote
Old 07-08-2012, 06:45 AM #4
Junior Member
 
Join Date: Jun 2012
Posts: 3
Rep Power: 0
LukePerry085 is on a distinguished road
LukePerry085 LukePerry085 is offline
Junior Member
 
Join Date: Jun 2012
Posts: 3
Rep Power: 0
LukePerry085 is on a distinguished road
Default Re: Long distance wide beam IR

Well I received the 220mW laser that was linked in the above post today, and I went and bought a brand new pair of Duracell lithium batteries for testing and it won't even cast significant light across the street when viewed through my cell phone camera (I have verified that this views IR), unless it's adjusted down into a fine dot. Either 220mW is WAY too dim, or it has a diode with a LOT less power than advertised, or my cell camera doesn't view enough of the IR spectrum.

Last edited by LukePerry085; 07-08-2012 at 07:06 AM.
LukePerry085 is offline   Reply With Quote
Old 07-08-2012, 11:02 AM #5
lasersbee's Avatar
Class 4 Laser
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 17,225
Rep Power: 18274704
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
lasersbee lasersbee is offline
Class 4 Laser
lasersbee's Avatar
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 17,225
Rep Power: 18274704
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
Default Re: Long distance wide beam IR

Do some under closer tests with the Laser Beam and Camera..
then scale up to "across the street"...

And wear some appropriate Laser Safety Goggles/Glasses
when using your High Powered IR Laser...


Jerry

You can contact us at any time on our Website: J.BAUER Electronics
__________________

J.BAUER Electronics Home Page

LaserBee Laser Power Meter Products meet your needs
at affordable Prices:
See them all here on LPF

LaserBee Power Meter products ALWAYS in Stock
and ready to ship

Also available on eBay:Check availability here..

Subsidary: Pharma Electronic Solutions


This banner is available to and can be copied/used FREE by any LaserBee owner
lasersbee is offline   Reply With Quote
Old 07-08-2012, 12:11 PM #6
DrSid's Avatar
Class 3R Laser
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 154
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
DrSid DrSid is offline
Class 3R Laser
DrSid's Avatar
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 154
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
Default Re: Long distance wide beam IR

Quote:
Originally Posted by LukePerry085 View Post
Well I received the 220mW laser that was linked in the above post today, and I went and bought a brand new pair of Duracell lithium batteries for testing and it won't even cast significant light across the street when viewed through my cell phone camera (I have verified that this views IR), unless it's adjusted down into a fine dot. Either 220mW is WAY too dim, or it has a diode with a LOT less power than advertised, or my cell camera doesn't view enough of the IR spectrum.
Well cellphone cameras, as most cameras, have IR filter built in them. This can be removed. It's pretty tricky in a cellphone though. It's much easier in most webcams though. Try buying some cheap one and dismantle it. IR filter is green looking glass glued either to optics or to sensor.
__________________
200mw (35mw compared) FocalPrice cheap green AA - Review
500mw (estimated) 445nm Minimalistic Orange Emos Direct Drive. Thread
1500mw (estimated) 445nm Jayrob's Solarforce L2P. Review
DrSid is offline   Reply With Quote
Old 07-08-2012, 12:48 PM #7
Blord's Avatar
Class 4 Laser
 
Join Date: Dec 2007
Location: Belgium
Posts: 5,368
Rep Power: 76297
Blord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond repute
Blord Blord is offline
Class 4 Laser
Blord's Avatar
 
Join Date: Dec 2007
Location: Belgium
Posts: 5,368
Rep Power: 76297
Blord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond repute
Default Re: Long distance wide beam IR

Quote:
Originally Posted by LukePerry085 View Post
Well I received the 220mW laser that was linked in the above post today, and I went and bought a brand new pair of Duracell lithium batteries for testing and it won't even cast significant light across the street when viewed through my cell phone camera (I have verified that this views IR), unless it's adjusted down into a fine dot. Either 220mW is WAY too dim, or it has a diode with a LOT less power than advertised, or my cell camera doesn't view enough of the IR spectrum.
What do you expect ? 220mW IR is still 220mW of power. Imagine a high-power LED at this power. To cast something visible across the street you need tens of Watt of LED power. 220mW is nothing.
__________________
405nm 400mW S06J C6
445nm 3W Big Boy, 2.8W Dominator, 2.4W Steel Laser
450nm 240mW PL450 C6
473nm 100mW PGL-III-C-473
520nm 55mW Skylaser PL520
532nm 821mW Skylaser PL532, 133mW Jetlasers Ti-B
589nm 100mW PGL-III-C-589
635nm 70mW Sanyo SenTorch
638nm 175mW Ehgemus, 1W Rook
660nm 1216mW Skylaser PL660, 263mW LPC826 C6
685nm 33mW Fujitsu FLD6A2TK C6
780nm 150mW Dilda
808nm 640mW C6

I have copper 501B and Dominator lasers for sale !
Blord is offline   Reply With Quote
Old 07-08-2012, 01:04 PM #8
ryansoh3's Avatar
Class 3R Laser
 
Join Date: Feb 2012
Location: Pittsburgh
Posts: 1,282
Rep Power: 114309
ryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond repute
ryansoh3 ryansoh3 is offline
Class 3R Laser
ryansoh3's Avatar
 
Join Date: Feb 2012
Location: Pittsburgh
Posts: 1,282
Rep Power: 114309
ryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond repute
Default Re: Long distance wide beam IR

I'd recommend a HID flashlight of 50-80 Watts on ebay or a high powered halogen and stick an IR cover over the head. The filter should only allow IR to pass.
__________________
Is your laser a BAMF?

With great power comes a great need for safety.

I am SICK of spoon feeding noobs who just don't care to search the forum.

Lasers:
405nm Amazon Set
445nm BAMF Link
445nm 2358mW Peak The Bushwhacker by Dogs Best Friend
445nm Fantasy Link
532nm "200mW" DealExtreme Pointer
532nm Amazon Set
650nm Amazon Set
FastTech is the new DX. (Nope, prices have gone up, nevermind!)


Last edited by ryansoh3; 07-08-2012 at 01:04 PM.
ryansoh3 is offline   Reply With Quote
Old 07-08-2012, 01:16 PM #9
Atomicrox's Avatar
Class 3R Laser
 
Join Date: Jun 2011
Posts: 2,419
Rep Power: 3336408
Atomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond repute
Atomicrox Atomicrox is offline
Class 3R Laser
Atomicrox's Avatar
 
Join Date: Jun 2011
Posts: 2,419
Rep Power: 3336408
Atomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond repute
Default Re: Long distance wide beam IR

Visibility varies a lot from camera to camera. My iPhone barely picks my IR laser but my aunts low end Nikon picks it up very well. It's also easy to remove the IR filter on a camera. I've never done it but should improve visibility substantially.

That picture of the house seems very well spread for an IR laser. They're usually multimode and provide very ugly and irregular "dots".

Also note that 808nm isn't invisible, you should be able to see the focused dot from your laser on a surface a couple centimeters away. Don't stare at it! Not sure how well animals will see it but they just might.
__________________
405nm: NewWish (29.1mW avg|5mW rtd) | Dilda (81.5mW avg|200mW rtd) | 501B by Blord (633mW pk)
low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
~462-476nm "Tunablue" by Atomic (1.5W pk)
480nm: hostless by Atomic (101mW pk)
487nm: hostless by Atomic (112mW pk)
505nm: hostless by Atomic (103mW pk)
low 520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
high 520nm: Laserlands (8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
575nm: hostless by Atomic (41mW pk)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
635nm: NewWish (4.6mW avg|5mW rtd)
638nm: Classic from Lazerer (409.3mW pk|389.4mW avg|415mW rtd)
650nm: NewWish (10.6mW pk|5mW rtd) | Dilda (216.3mW avg|200mW rtd)
685nm: laser-in-a-box by Atomic (30.4mW pk|29.3mW avg) | 501B by Atomic (32.4mW avg)
780nm: module (2.7mW avg|5mW rtd)
808nm: Classic modded from a 532nm (162mW avg)
850nm: module (8.8mW avg|7mW rtd)
980nm: NewWish (81mW pk|5mW rtd) | 2nd line around 490nm

5W Ophir LPM

HV: Flyback, Plasma Speaker, The Arcsynth and SSTC
Atomicrox is offline   Reply With Quote
Old 07-08-2012, 02:54 PM #10
DrSid's Avatar
Class 3R Laser
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 154
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
DrSid DrSid is offline
Class 3R Laser
DrSid's Avatar
 
Join Date: Jul 2010
Location: Olomouc, Czech Republic
Posts: 1,516
Rep Power: 154
DrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond reputeDrSid has a reputation beyond repute
Default Re: Long distance wide beam IR

Actually I expected you will use dedicated night vision goggles with the laser. They are quite sensitive to these wavelengths.
__________________
200mw (35mw compared) FocalPrice cheap green AA - Review
500mw (estimated) 445nm Minimalistic Orange Emos Direct Drive. Thread
1500mw (estimated) 445nm Jayrob's Solarforce L2P. Review
DrSid is offline   Reply With Quote
Old 07-09-2012, 12:00 AM #11
Fiddy's Avatar
Class 3B Laser
 
Join Date: May 2011
Location: Down Under
Posts: 2,747
Rep Power: 312
Fiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond repute
Fiddy Fiddy is offline
Class 3B Laser
Fiddy's Avatar
 
Join Date: May 2011
Location: Down Under
Posts: 2,747
Rep Power: 312
Fiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond reputeFiddy has a reputation beyond repute
Default Re: Long distance wide beam IR

hey man,

you could always use a 1W 9mm diode, they have horrible divergence, which is good at covering larger areas!

heres a video of mine:

__________________
405nm - 1,910mW (6)
445nm - 15,895mW (15)
450nm - 370mW (2)
473nm - 110mW (2)
532nm - 1250mW (6)
632.8nm - 2mW (1)
637nm - 5105mW (8)
660nm - 1,850mW (5)
670nm - 600mW (1)
685nm - 40mW (1)
808nm - 2,700mW (3)
RGB - 400mW (1)

In Progress:
405nm - 500mW+ Kryton Groove
445nm - 2,000mW+ C-88
520nm - 50mW Ultrafire RL-118 SS
632.8nm - 0.5mW Mini HeNe

Safety Glasses
2x Eagle Pair OD4+ 190nm-540nm
2x Eagle Pair OD4+ 90-400nm & 580-760nm
OEM Lasers OD 5+ 190-435nm & 730-1085nm

LaserBee 5W Laser Power Meter


>Fiddy's Review/Tutorial/Build Compilation Thread<
>>FS: Custom Glow Rings<<
>>>Plasma Speaker Kits (High Frequency Audio Tesla Coil) reserve yours today!<<<

CajunLasers FTW!
Fiddy is offline   Reply With Quote
Old 04-28-2013, 08:03 PM #12
Junior Member
 
Join Date: Apr 2013
Posts: 1
Rep Power: 0
armalite is on a distinguished road
armalite armalite is offline
Junior Member
 
Join Date: Apr 2013
Posts: 1
Rep Power: 0
armalite is on a distinguished road
Default Re: Long distance wide beam IR

here take a look .. long range NV security cam

they use 808nm , output power 15W

armalite is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



























Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 10:19 AM.


Powered by: vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC