Page 12 of 70 FirstFirst ... 234567891011121314151617181920212262 ... LastLast
Results 111 to 120 of 695

Thread: Project NiteVision - NiteMax + HUD + carputer

  1. #111
    FLAC
    Join Date
    Mar 2005
    Location
    NY
    Posts
    1,164
    Quote Originally Posted by jammy_basturd
    Hey, just thought I'd add my ideas rather than start a very similar thread. I've been following this for a about a week and read through it several times.

    I was wondering whether anyone has looked into making a system very similar to the ones above but using the ideas behind a DIY projector, like these?

    I was thinking you could use ultrabright white LEDs as the light source, shone through a small (2.5-52) active matrix LCD screen, then pass this through the relevant filters and lenses. I was also planning with mine to use a very thin plastic screen on top of the dash to project onto, rather than projecting onto the windscreen. This solves the problems of placing tints onto the windscreen (which in the UK could be a legality issue), and I can also motorise this so it can be withdrawn into the dash when not needed?

    Another advantage of this is that you can have greater control over the brightness of the screen. I was thinking of using an LDR to regulate the brightness of the white LEDs, so if there is a car coming towards you with headlights on, or real bright daylight, or going through tunnels, etc, the LEDs would adjust the brightness accordingly.

    The one last advantage I thought this would give is with the control it gives you over the reflection/refraction angles and ghost images. Because you would essentially only be projecting the image through one enlarging lense and onto the viewing surface you can set up the viewing angle of the screen precisely and you don't need to worry about the curvature of the windscreen?

    Anyone have any thoughts on this? Its a bit of a rough idea so far, haven't had time to sit down and work anything out on paper yet.

    hehe, been there. I was going to make it raise by a small system of drawstrings from laying on the dash. Its a good idea, except since its projecting onto a film form the opposite side, the whole world knows you have something on in your car, and is illegal in my area 9since it looks like light is being emitted from the dash as well). I was thinking a roof top projector, and then came the point "how?" Well, my car is small. If it was an SUV or mini van, i'd hit this completely differently, but i like my economical compact sports cars.

    I haven't had the curvature of my windsheilf be a problem, just the inverting of the pictures isnce it does produce a mirror image.

    Also, i had a company, da-screen or something, do the calculations for me. You only need about 350-450 nits to appropriately illuminate the screen (thier holoscreen), if i remember correctly. It won't take too much do iluminate the screen in the day time at that distance, esp if you use an LCD. Filters that you'd need...i don't know....the resident optics guys will lead you better in that respect.
    Carputer Progress: Here we go again...

    THE GF THEME
    Genesis has speed
    Genesis has class
    Genesis sent money
    before your a__;)

    Join the fight against carputters. EMAIL ME!

  2. #112
    Newbie
    Join Date
    Apr 2006
    Posts
    30
    Hmmm, I was thinking an anti-reflective film on one side of the viewing screen so people from in front of the car can't see theres something there?

  3. #113
    Constant Bitrate NiteMax Mark's Avatar
    Join Date
    Feb 2006
    Posts
    112
    Quote Originally Posted by Genesisfactor
    hehe, been there. I was going to make it raise by a small system of drawstrings from laying on the dash. Its a good idea, except since its projecting onto a film form the opposite side, the whole world knows you have something on in your car, and is illegal in my area 9since it looks like light is being emitted from the dash as well). I was thinking a roof top projector, and then came the point "how?" Well, my car is small. If it was an SUV or mini van, i'd hit this completely differently, but i like my economical compact sports cars.

    I haven't had the curvature of my windsheilf be a problem, just the inverting of the pictures isnce it does produce a mirror image.

    Also, i had a company, da-screen or something, do the calculations for me. You only need about 350-450 nits to appropriately illuminate the screen (thier holoscreen), if i remember correctly. It won't take too much do iluminate the screen in the day time at that distance, esp if you use an LCD. Filters that you'd need...i don't know....the resident optics guys will lead you better in that respect.
    I'm not aware of any way to change the back-light brightnes from the NiteMax's LCD Display. It is possible to change the LCD Contrast and make the image darker and lighter.

    For anyone with enough patience, you can disassemble the LCD Module in the NiteMax. With a little care, you can strip the back-light assembly from the LCD Module (It's somewhat modular) and have a semi-transparent LCD in a metal frame.

    At the very least, you could change the back-light to something brighter or a different color. With some clever optics, you could have the beginnings of a projection display.

  4. #114
    Low Bitrate
    Join Date
    Sep 2005
    Posts
    72
    what happened to peoples post?

  5. #115
    FLAC
    Join Date
    Mar 2005
    Location
    NY
    Posts
    1,164
    i wasnt' using the nitemax's LCD, i was being imaginative and using fiberoptic an a specialy item that is pretty rare and hard to find. Acutally was talkign about it today. Played with FO before...applications are amazing if i could get the right tools and equipment, but its not pracitcal and really hard and i can't crunch the equations.

    To jammy, and antiflective film, i think, will destroy the projected image. But its not the image that i'm worried about otehrs seeing, its the light that's reflected, period. Put seriously, try it before putting it in tthe car, i' highly interested in how that one turns out. If i had the cash, i'd be trying out all these ideas. I'm interestedin seeing how each of these play out,t he strenghts and weaknesses, and just the over all look and usefulness of them.
    Carputer Progress: Here we go again...

    THE GF THEME
    Genesis has speed
    Genesis has class
    Genesis sent money
    before your a__;)

    Join the fight against carputters. EMAIL ME!

  6. #116
    Newbie
    Join Date
    Apr 2006
    Posts
    30
    Ok, I have an 6.5" NEC Active matrix screen I'm winning on Fleabay at the moment. If I get it I don't mind ripping it apart to see what I can do with it.

    Off the top of anyones head, does someone know where I can get a mixture of filters and thin films to experiment with in the UK?

  7. #117
    My man uses Levitra. Peoples's Avatar
    Join Date
    Dec 2004
    Location
    Maryland
    Posts
    2,024
    Quote Originally Posted by alpha_maverick
    what happened to peoples post?
    I deleted them because they were resposts, posted on page 3 & 4
    PC Components:
    Lilliput; XPC/FLEX mobo; 1.7 ghz P4 Mobile;512 DDR; 160 gb HDD; opus 150; slot usb dvd-rw
    My work log

  8. #118
    Raw Wave shotgunefx's Avatar
    Join Date
    Apr 2005
    Location
    Boston, MA
    Posts
    1,800
    HUD glass came.

    As a quick experiment, just knocked my lcd over in a fairly well lit room.

    With flash (suprised you could see it at all, also stumped why there is no reflection on glass???)


    Without.


    For comparision, tried to do it with a CD cover. Couldn't. Every piece of plastic I tried looked like this. Weird. Must by one of the lcd films.


  9. #119
    Low Bitrate
    Join Date
    Sep 2005
    Posts
    72
    Little or no ghosting
    excellent reflection
    excellent transmission
    no distortion

    current judgement:

    PERFECT!!!!

    now you need to figure out how to use the lenses to adjust the focal distance out past 20 feet (the point at which our eyes no longer actively focus)

  10. #120
    Raw Wave shotgunefx's Avatar
    Join Date
    Apr 2005
    Location
    Boston, MA
    Posts
    1,800
    Quote Originally Posted by alpha_maverick
    Perfect!!!!
    Looks promising, I'll do some more tests (and try some different glass regular/privacy ) for comparision.

    Definitely will have to cut it down though. This thing full size in front of you on the dash? Not me, it would be like the Omen when the guy get's decapitated.

Similar Threads

  1. PROJECT: 2004 Xterra Carputer
    By elgenyo in forum Fabrication
    Replies: 9
    Last Post: 06-01-2007, 04:23 PM
  2. VW Golf mk3 - carputer project
    By Sh0cker in forum Show off your project
    Replies: 43
    Last Post: 12-09-2005, 10:14 AM
  3. My Carputer Project, need advice
    By natesimpson74 in forum General Hardware Discussion
    Replies: 1
    Last Post: 09-21-2005, 01:14 AM
  4. My carputer project: Solaslim
    By nthai in forum Show off your project
    Replies: 57
    Last Post: 10-28-2003, 03:43 PM
  5. New CarPuter Project: Need Input!
    By Tremek in forum General Hardware Discussion
    Replies: 12
    Last Post: 01-31-2002, 03:07 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •