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Thread: Project NiteVision - NiteMax + HUD + carputer

  1. #651
    Raw Wave shotgunefx's Avatar
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    Funny, doing some more searching led me to this patent for military aircraft.

    http://www.patentstorm.us/patents/69...scription.html

    Here's the interesting tidbit for us...

    It is estimated that the incandescent PAR lamp 32 produces about 7 times more light energy as infrared light than as visible light.
    As far as I can tell, they are referring to general PAR type lamps as the invention from what I can see is the housing.

  2. #652
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    Sorry guys.

    Non of those lights to be found at the aircrafts stationned at my base.

  3. #653
    FLAC
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    hmmm...okay, my i ask, are you using a diffuser on your IR leds? murgurg and i had a talk about that nd he says everything was amazing after he put it on, atleast for dealing wth the spots.

    For the IR pass filter, do you think a rotating piece of glass will do it, that is user controlled from the front of the vehicle? It will swivel over the lens when you need it, and swivel back out of the way when you dont?

    Shotgun- geeez medical stuff...i'll send you mail later on today, we'll talk. hehe, i know what you mean about the project. life and other things just leech time from little projects like this. meddlesome things...
    hehe, i shouldnt' say learned C++ as much as started it. I'm starting to believe that my mind is not object oriented lol.

    i honestly wonder if that swivel filter idea couldn't be put to use with a polarized lens. i should research the differences between circular andlinear polarization.

    as for these high powered IR lights, i say again, remember my high powered Ir laser from form the original nitemax thread? lol, let's not build something that has the smae intensity as HIDs, or greater, but won't allow you the comfort of shielding your eyes, thus damaging them....

    ...besides...what si wrong with the standard LEDs...you know...other than the fact that they are standard lol. If i remember correctly, the nitemax used that GAIN button for far away darker things. why not just do the equivalent of that if you're not using the nitemax lcd,or use it if you are? i mean,with this project, the HUD is probably goingto be the nitemax lcd,so that might work out....

    ...then again that's up for debate until someone actually does it. what say you LeZandre?
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  4. #654
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    I already tried the standard LED's in two different ways, both outside the vehicle.

    The first time I put them all (6 modules) together a clear plastic box. That gave me a flashlight like beam that carried about 30 meters and gave me an illuminated spot of about 3 meters in diameter.

    The second time I put them 2 by 2 behind circular lenses I took from bike headlamps, thus effectively polarising the beams horizontally. With the low beams of I managed to illuminate the street in front of the car for about 15 meters far, and 7 meters wide.

    With the low beams on they were drowned out completely.

    I have a polarising filter lying around somewhere. I'll give that a go during the weekend.

    Oh yes, your remark on using the NiteMax's LCD for the HUD.
    Currently I'm still driving around with the 7" TFT on my dash.
    It already has its brightness turned up to full.

    That's why I'm focussing my attentions on getting the IR illumination as powerful as reasonably feaseable, and eliminating the "traffic-glare" as much as possible.

    With my setup I can compare the image on the 7" with the NiteMax's, so I do can confirm the GAIN setting should help a lot in what you're trying to accomplish.
    Maybe not to an extent you won't need any IR illumination, but you can indeed go a long way without.

  5. #655
    FLAC
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    you don't want to polarize the beam, you want to diffuse it. it should yield your more satisfactory results

    Also, if you're usig this with your headlights, you should know that the nitemax cd is not just an IR camera, but it sees the visible light spectrum as well. If you want, have two arrays of LEDs, one that goes on if and only if you decide not to use your headlights, and the other to work in conjuction with your headlights These leds should be spaced out to give you a better view of the world around you, letting yoru headlights concentrate on the road. Use a diffuser to these too and it will give you the effect of a lantern instead of a flashlight with a wide spread
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  6. #656
    QCar Creator Jirka Jirout's Avatar
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    Has anyone tried to use a regular halogen bulb (H3/H7) with a filter that blocks the visible light and only lets the IR light thru?

    Especially with a little lower voltage, these bulbs produce enough IR light to work with, but I only tested them for night vision devices, not CCD cameras. Now I am tempted to convert the two extra hi-beam reflectors on my V480 to IR reflectors, but not sure whether it would be usable with a CCD camera.

  7. #657
    Variable Bitrate quantum's Avatar
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    Hey guys,

    I see the conversation has turned to illumination using IR filters and such. For what it's worth, some of the cheapie filters let through a little visible light, and that light will be in the red color spectrum. At least some of the ones I've seen, with the exception of military grade, do that.

    #1 thought to ponder: Most states outlaw ANY red visible light (even dim red light) facing forward on a moving vehicle.

    #2 thought to ponder: Forward facing IR will be seen clear as a bell on traffic light cameras, and also would trigger the light change, making them SO illegal. Try explaining THAT to the judge!

    "Honest, yer honor, I was just trying to get a greater range outta my NiteMax!"

    Probably posted before, but some good reading on IR and traffic lights
    http://www.i-hacked.com/content/view/176/44/

    Just my 2 cents worth, happy motoring!

  8. #658
    Raw Wave shotgunefx's Avatar
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    Quote Originally Posted by quantum View Post
    Hey guys,

    I see the conversation has turned to illumination using IR filters and such. For what it's worth, some of the cheapie filters let through a little visible light, and that light will be in the red color spectrum. At least some of the ones I've seen, with the exception of military grade, do that.

    #1 thought to ponder: Most states outlaw ANY red visible light (even dim red light) facing forward on a moving vehicle.

    #2 thought to ponder: Forward facing IR will be seen clear as a bell on traffic light cameras, and also would trigger the light change, making them SO illegal. Try explaining THAT to the judge!

    "Honest, yer honor, I was just trying to get a greater range outta my NiteMax!"

    Probably posted before, but some good reading on IR and traffic lights
    http://www.i-hacked.com/content/view/176/44/

    Just my 2 cents worth, happy motoring!
    I think that's the big deal with the Mercendes NV. I think the big deal with the optics are the filters to stop it from bugging traffic cameras and emitting red. It was in one of the dozens of things I was reading last night, though I can't find the link at the moment.

    As far as #1. I'm not too worried depending on how much red it's putting out. I never seem to get hassled for things like that (no front plate etc).

    On #2, I don't think most people (if anyone) would notice them on CCTV as if you looked at the image alone, it would just look like lights.

    If you used narrow spots like I was thinking, at 6ft, the cone of light is only 1ft wide, I'm too groggy to do the math, but I think you'd have to be pretty far from a traffic light to illuminate it on semi-level ground, it may be a non-issue.

    Anyone in the army?
    http://www.phantomlights.com/vehicle.htm

  9. #659
    FLAC
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    hehe, hate to say it but shotgun is right. it been over a year since we talked about he legals.

    also, seems that this MIRT use a555 timing IC at 10hz i believe? Seeing that most light form cars, buildings, streetlights, and even the traffic lights themselves, give off IR light, i don't think a steady IR lamp would cause it to trip unless you blinked it 10 times a second lol.

    i think, form an HUD standpoint, our biggest problem is optics, not illumination. quantum, i invite you to perue throhg surplus shed so that we can make a focusable manifying lens array
    Carputer Progress: Here we go again...

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    Genesis has speed
    Genesis has class
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  10. #660
    Variable Bitrate quantum's Avatar
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    Yabbut...

    I don't think the "illegal" part is tripping the light so much as having a device that could trip the light, which is an IR emitter. At least that's what I walked away from that hack article from.

    Picture a $7.00/hr municpal employee assigned the task of flipping through red light camera shots looking for this bright white IR signature coming from something other than the headlamps. "The snap shot of the camera could have been taken during that 1/10th of a second, let's put his license plate number on the "send ticket" pile and see what happens."

    Then again, a carPC in general in might raise alarm from a cop on the side of the road who sees the monitor glow and thinks yer watching movies while driving or something.

    I prefer avoiding a problem when I can rather than dealing with one. Chances are you could argue the point in court and maybe even win, but it's just a hassle.

    Gonna cruise that surplusshed site. But what I think would really help me understand the concept of the actual HUD is when I get all the parts so I can bench test it with an image. Right now, it's basically a mirror in a plastic box.

    I am just thinking out loud, but I'm pretty sure the bent mirror does more than magnify the image. A few ray traces lead me to believe it also wraps the image, which would offset the optical distortion on the windshield. A simple demonstration would be to face your palms together and curl your fingers. That's kinda what the mirror looks like in realtionship to the inside of the windshield.

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