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Thread: Project NiteVision - NiteMax + HUD + carputer

  1. #171
    Raw Wave shotgunefx's Avatar
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    Quote Originally Posted by TomG
    the DLP you linked to won't be very good in car as the screen size it projects is, dare I say it, too big!

    Looking inside that proper HUD device, it don't half look simple. The res of the screen is the same as that in the nitemax, we could make one of those easily enough.

    12V halogen bulb --> LCD --> lens --> screen

    thats pretty much all you'd need I reckon.
    Probably could fix that with a different lens. Not suggesting it, but if I were to spend $500, then I'd spend $800 for 100X the functionality.

    I think a problem with any roof mounted projection approach is the collimator. Wouldn't it be quite visible to the outside world?

  2. #172
    Newbie TomG's Avatar
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    well yes, it would, but whats to say that same system methodology couldn't be used on the vertical plane instead of horizontal? All it'd do then is light the sky, no one would care about that. Plus, building it yourself wouldn't be that difficult, the hardest part is getting the image on the LCD and orientated the correct way and we have very easy solutions to that problem. The next is the lens, might even be possible to use spectacle lenses, they're quite large before they're cut and pretty good quality.

  3. #173
    Raw Wave shotgunefx's Avatar
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    Quote Originally Posted by TomG
    well yes, it would, but whats to say that same system methodology couldn't be used on the vertical plane instead of horizontal? All it'd do then is light the sky, no one would care about that. Plus, building it yourself wouldn't be that difficult, the hardest part is getting the image on the LCD and orientated the correct way and we have very easy solutions to that problem. The next is the lens, might even be possible to use spectacle lenses, they're quite large before they're cut and pretty good quality.
    Yeah, but mounting a projector as large as the one linked inside the dash, would be problematic I think for most cars.

    The other suggestion is more or less I think what most of us are trying to do.

  4. #174
    Constant Bitrate spaceskater's Avatar
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    Quote Originally Posted by shotgunefx
    spaceskater
    I'll verify tomorrow or the next day, but pretty sure it's the lilliput and not the camera causing the white out. All those videos were shot only minutes before. I think when I plugged in the cam to the lilliput it glitched it. Easy enough to verify.

    The other thing I need to do is put the cam on regulated voltage.
    For the in car testing, I'm just running it to the ACC socket. I know with some of the cheaper cmos cameras, the picture brightness varies somewhat with voltage. Maybe the same here?

    For the polarizing film, did you use it as the display or just lay it over the lilliput? The privacy film I use is sort of like a polarizer, but with a somewhat wide angle. When I layed it over the lcd itself, the double reflection was just about gone.
    My main screen is a Xenarc and to be honest if i don't adjust the brightness i get a washed out picture too, but it does not affect the camera itself. I am going to get one of those cheep usb capture devices so i can capture some vids. (BTW I can't download your last vids, server not responding)

    I built a simple regulating psu for the camera but i get a lot of noise from the alternator...! I think I will connect it to my pc power supply directly.

    I used the polarizing film as a display. Like it would be glued on the windshield. That cancels the double image completely and actually people from the out side can't see the LCD ether. But it makes the windshield to dark to see outside. I think what your privacy film did is to lower the light intensity just enough so that the faint second image was not visible any more. That was what i got my using to Fresnel lenses. When magnified enough the second image was there but barely visible since it was to dim.

    I'll try putting some polarizing film om the camera lens to see what happens. The weather here in Boston isn't helping much haha.
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  5. #175
    FLAC alti's Avatar
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    wow, I got my package from Mark today, holy *****! there is alot of toys in here

    I have color ccds and I ordered quite a bit of IR arrays.

    thanks for the goodies, Mark, he even through in some 5k pots
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  6. #176
    Constant Bitrate spaceskater's Avatar
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    BTW that small Mitsubishi projector is really nice!! I want one!!!!

    @TomG: Well our biggest problem around here is how we reflect it on the windshield and that HUD projector also uses an extra combiner assembly. That is what we want to avoid!

    On the other hand the idea of using the nitemax LCD for a projector is very interesting!
    Will never be DONE! There is always something to add
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  7. #177
    Raw Wave shotgunefx's Avatar
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    Quote Originally Posted by spaceskater
    My main screen is a Xenarc and to be honest if i don't adjust the brightness i get a washed out picture too, but it does not affect the camera itself. I am going to get one of those cheep usb capture devices so i can capture some vids. (BTW I can't download your last vids, server not responding)

    I built a simple regulating psu for the camera but i get a lot of noise from the alternator...! I think I will connect it to my pc power supply directly.

    I used the polarizing film as a display. Like it would be glued on the windshield. That cancels the double image completely and actually people from the out side can't see the LCD ether. But it makes the windshield
    to dark to see outside. I think what your privacy film did is to lower the light intensity just enough so that the faint second image was not visible any more. That was what i got my using to Fresnel lenses. When magnified enough the second image was there but barely visible since it was to dim.

    I'll try putting some polarizing film om the camera lens to see what happens. The weather here in Boston isn't helping much haha.
    I hear you. I'm in Boston too.

    What the film does is restrict the view angle, so if you were somehow hovering directly above the car or within, you'd see it clear as day.

    The reason it dims the double image is the angle at which I'm viewing it, not much light passes through it. It's basically microscopic blinds embedded in a film.

    Like this pic.


    The nitemax LCD is clearly visible in that pic, but most of the light is blocked out at that angle.

  8. #178
    FLAC
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    Quote Originally Posted by Peoples
    i wonder if it might be worth it to build an actual roof mount projecto like this thing http://cgi.ebay.com/ebaymotors/NEW-D...60187428QQrdZ1
    THis is funny
    That looks hot, but there are a few problems (we're going to set aside your noggin, shotgun, for a moment, though its been cracking project problems since i meet you)

    Weartronics (been through their store last week, was looking at an HMD they had) has a lot of ex military technology that is VERY cool, but also, being ex military its old. The resolution is too small for us.

    Its BNC NSTC and serial for the display data. they state that later in the auction...and the fact that the unit that was at top isa much better unit than the one below and they even recommend another unit that's cheaper and does more.

    However, if we cna alter ti, or the other ones, it could be a possibility. What WOULD be cool is if we can take the housing, and build a full windshield system some how. That woudl be amazing...

    Now back at shotgun....PocketProjector was a last week research too (a friend told me about them after asking him about display inversion software and telling him about the project). The only thing that's wrong with it is the price at $799, and all the stores Mistu selectively distributed it to, have it for even more. I couldn't find jack on it online other than the rumors, the delays, and then finally, the stores. It IS a solution, yes, but I can't see us dropping $750 for a projector that would most likely be mounted where billforde has his LCD. When it hits $400, i'll pic k that sucker up and a buttload of HUD glass. Then i have to get to work on a nice full screen...gah....too much tech...making me drool...
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  9. #179
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    GenesisFactor: I'm guessing when you say their HMD you meant this: http://cgi.ebay.com/NEW-NEAR-EYE-HEA...spagenameZWDVW

    What was your verdict on it? I saw it and was wondering as to its uses....

  10. #180
    Newbie TomG's Avatar
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    Quote Originally Posted by spaceskater
    @TomG: Well our biggest problem around here is how we reflect it on the windshield and that HUD projector also uses an extra combiner assembly. That is what we want to avoid!

    On the other hand the idea of using the nitemax LCD for a projector is very interesting!
    this is what I was planning from the offset tbh, it'll be the best way of doing it. It isn't a combiner, its a collimator, doesn't do anything like "combining" images.

    Quote Originally Posted by Genesisfactor
    The resolution is too small for us.
    The resolution of the nitemax LCD is only 480x234, thats not a massive difference, and if you consider that system is specifically designed for HUD and ours are (currently) really only bodges, I know which I'd prefer given the choice.

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