Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: Asellith on November 18, 2008, 07:51:06 AM

Title: Looking Through an LCD
Post by: Asellith on November 18, 2008, 07:51:06 AM: I have never tried it but the concept makes sense in my head... Can I make a heads up display in a helmet or goggles that have an LCD without backlight set in behind of the lens. Then when you look through the lens you will see the display on top of the image coming in the lens. I got this idea by watching star wars and thinking a clone trooper or boba fett helmet would be really cool to have the ability to put a hud in it. Any thoughts?
Title: Re: Looking Through an LCD
Post by: TrickyNekro on November 18, 2008, 01:05:10 PM: I really think you need something like this man...
(http://media.digikey.com/photos/Lumex%20Photos/LCD-S2X1C50TR,LCD-S2X1C50TF.jpg)

The only thing you gotta do is to remove the mirror like coating and you are good to go!!!
Trust!!!

Best Regards
Lefteris, Greece
Title: Re: Looking Through an LCD
Post by: bukowski on November 18, 2008, 02:09:44 PM: Hmmm. I dont know how well that would actually work if you removed the film...
HUD's in military applications always project the image onto the screen, but lots of times military opts for "tried and true" methods rather than going with state of the art.
I found this, but they still use a substitute film:
http://www.engadget.com/2007/06/29/see-through-lcd-screen-developed/ (http://www.engadget.com/2007/06/29/see-through-lcd-screen-developed/)
Title: Re: Looking Through an LCD
Post by: Commanderbob on November 18, 2008, 05:36:15 PM: Quote from: TrickyNekro on November 18, 2008, 01:05:10 PM
I really think you need something like this man...

I had one of those so I decided to try it. It is really hard to remove the coating. I got two layers off but there is still the very sticky mirror layer. The thing is now semi transparent, you can tell when something is behind it but still you would not want it blocking you vision. Any ideas on how to remove this layer? I think it will work well if you can remove it cleanly without scratching the back.
Title: Re: Looking Through an LCD
Post by: izua on November 18, 2008, 05:39:17 PM: http://www.made-in-china.com/showroom/favourglory/product-detailgMeElfxJuLWh/China-Novelty-Digital-Clock-INOUT403-.html
Title: Re: Looking Through an LCD
Post by: TrickyNekro on November 18, 2008, 06:54:34 PM: Quote from: bukowski on November 18, 2008, 02:09:44 PM
Hmmm. I dont know how well that would actually work if you removed the film...

Without the film you see nothing... But I said about the mirror... That's another thing....
The mirror is a aluminum foil something thingy in the back... remove it and you see through...

A good general purpose LCD for you is a old Nokia cellphone LCD...
Easy interface, small and lightweight, and found everywhere almost for free...
Also the controller is on one side facing down... This also makes things easier...

And airplane HUDs except some new ones, uses CRT monitors....
And these new ones are in experimental aircrafts,
This is because CRTs can create a greater contrast, helping the
pilot to see the HUD info at all weather....
Not even a match... :D

Anyways,
Good night, cause it's 3 in the morning here
Best Regards guys,
Lefteris, GReece
Title: Re: Looking Through an LCD
Post by: Commanderbob on November 18, 2008, 08:36:43 PM: Any ideas on removing the film? It still works and I'll take pictures if I can remove the mirror cleanly.
Title: Re: Looking Through an LCD
Post by: arixrobotics on November 18, 2008, 11:25:48 PM: Get some cheap calculators and then you can try different methods of removing the mirror without spending $$$...
Title: Re: Looking Through an LCD
Post by: Commanderbob on November 19, 2008, 09:14:12 AM: This type of LCD is only $1-2, not that bad if you break a few. Do you think the display would break if it got wet?