Well,
I've had a lot of fun with my projector. I had fun hunting for the parts. I had fun building the screen. I had fun watching the Football games and I had fun watching others reaction to the huge 100" Image.
But now..... I'm kinda bored? And curious.........
Why you ask? Because after my projector bulb blew out last week, I plugged my XBOX into my old 25" CRT TV and played some ESPN NFL Football. You see, I had never played the game on anything other than a Rear or Front projection TV screen.
The light and shading on the CRT TV blew me away, not because it was a revelation, but because after watching the projector for so long, I along the way realized that I never appreciated the merits of the old CRT tube. It looked like a totally different game.
And so it hit me. It's time to go to the next level guys. It's time to take everything that we have learned and advance, exponentially.
I'm talking finding cheap, but very efficient ways to nearly parallel the current technologies. I'm talking HDTV, I'm talking flat screen. I'm talking sharp, crisp clear TV's that will be simple in design but awesome in execution.
Here is what I want to do:
*build a flat screen non-projection LCD TV with HDTV capabilities starting at 40"
*build a Flat screen non-projection TV with HDTV capabilities using a CRT format
*build a Projection TV front and/or rear using the above technologies.
Does this sound insane? Sure it does. It's supposed to. But is it impossible?
Nothing is impossible.
I'm going to begin my research and see what's out there, if anybody has any information in this matter right now, please post.
The projects we have all done so far have been fun as I'm sure you will agree. This new venture I'm proposing will be difficult, but if we all lend our brains we can certainly make strides.
Let's go.
I've had a lot of fun with my projector. I had fun hunting for the parts. I had fun building the screen. I had fun watching the Football games and I had fun watching others reaction to the huge 100" Image.
But now..... I'm kinda bored? And curious.........
Why you ask? Because after my projector bulb blew out last week, I plugged my XBOX into my old 25" CRT TV and played some ESPN NFL Football. You see, I had never played the game on anything other than a Rear or Front projection TV screen.
The light and shading on the CRT TV blew me away, not because it was a revelation, but because after watching the projector for so long, I along the way realized that I never appreciated the merits of the old CRT tube. It looked like a totally different game.
And so it hit me. It's time to go to the next level guys. It's time to take everything that we have learned and advance, exponentially.
I'm talking finding cheap, but very efficient ways to nearly parallel the current technologies. I'm talking HDTV, I'm talking flat screen. I'm talking sharp, crisp clear TV's that will be simple in design but awesome in execution.
Here is what I want to do:
*build a flat screen non-projection LCD TV with HDTV capabilities starting at 40"
*build a Flat screen non-projection TV with HDTV capabilities using a CRT format
*build a Projection TV front and/or rear using the above technologies.
Does this sound insane? Sure it does. It's supposed to. But is it impossible?
Nothing is impossible.
I'm going to begin my research and see what's out there, if anybody has any information in this matter right now, please post.
The projects we have all done so far have been fun as I'm sure you will agree. This new venture I'm proposing will be difficult, but if we all lend our brains we can certainly make strides.
Let's go.
It's not impossible. But you'd be happier just fitting a UXGA wide screen LCD into your current projector. It's expensive... but it's HD and it looks great.
I thought about doing that at one time.
Then I stopped short because I thought, "There is (almost) always a cheaper route."
Time to research and discover.
Then I stopped short because I thought, "There is (almost) always a cheaper route."
Time to research and discover.
What tools u plan on using? i dont think a dremel will even get u half way, but yeah u are right but unfortuanley for the average guy we cant aford a lab nor any presision machinery not to metion the gasses and chemicals required, i have the same ideas u have but at the end of the day its too damn exspensive man and parts are hard to find ready made for some super tech tv, im not knocking your ideas infact giving u some insiration , if u can do it go for it!
Trev
Trev
Projecto7 said:
You mean direct view TV?
By using fresnels in front of two side by side LCD's or CRT's (own fresnel for each) you can make the two look as one large and wide screen (if you are watching in the middle). Fresnels have much glare but there you could use some special 3M polarizers etc. stuff on the fresnels (and darken the room). Some folks have used fresnel this way to build displays for flight simulators (PC).
mhelin
huh never heard of that one, though i did think in making a multi lcd wall screen once, its just a matter of having the screens split up into the sections of the screen it has to display, i think if u had 8 lcd screens u could make a wild big screen direct tv
Trev
huh never heard of that one, though i did think in making a multi lcd wall screen once, its just a matter of having the screens split up into the sections of the screen it has to display, i think if u had 8 lcd screens u could make a wild big screen direct tv
Trev
oled (organic light emitting diodes) look them up its the future.
Stackable RGB pixels therefore three times the colour and light for a given size of lcd panel. Thinner, no ghosting due to slow response times, TFT matrixing , flexible substrates. Imagine a wall of activilly matrix OLEDs with no screendoor, ghosting and no need for a box to project it onto the wall or better still a roll up screen where the screen is the display! the future is bright the future is OLED the future is looking expensive for us DIYers😀
Stackable RGB pixels therefore three times the colour and light for a given size of lcd panel. Thinner, no ghosting due to slow response times, TFT matrixing , flexible substrates. Imagine a wall of activilly matrix OLEDs with no screendoor, ghosting and no need for a box to project it onto the wall or better still a roll up screen where the screen is the display! the future is bright the future is OLED the future is looking expensive for us DIYers😀
I think a multi LCD wall would be awsome, and is totally feasible with the technology available now. I just wonder how you would be able to split the image into parts. I know a PC with multiple video cards would do the trick for starters, but eventually a more advanced alternative would be needed.
ehuwiko
exactly but thats the same bit im stuck on too lol maybe its a certain hardware controller, over here in spain they use the multi lcd idea for a backing screen on the news somtimes but how is the issue on splitting the screens
Trev
exactly but thats the same bit im stuck on too lol maybe its a certain hardware controller, over here in spain they use the multi lcd idea for a backing screen on the news somtimes but how is the issue on splitting the screens
Trev
Ah, now we're thinking guys!
The good ideas are pouring in.
Yesterday, I had this thought (below). Tell me what you think about it and if it would be possible. Feel free to point out any possible roadblocks as well.
Here is what I want to experiment on first:
*I'm going to build a frame and box to make a 42"-50" wide screen LCD TV with legs to stand on (Similar to the Gateway wide screen Plasma TV's)
I want the LCD to be projected to be in the back of the baox case to project forward. It should look like this (but not with the back so deep):
_________________
/ |
/ |
/ Fan | |
|Lcd * light source | <====== viewing screen
\ | |
\ |
\_________________|
LL ======== Standing Legs
I will position the frensnels similar to the designs where you use the small box.
I will have to position the mirrors in a way where the image beams off of one mirror and then beams off of another and hits the screen for viewing. My hypothesis is that I will need to sit the LCD lower and facing upwards with the mirrors in a like position because there is no way everything will be able to position straight ahead in such a small space. This will be a challenge.
I will also need to figure out what type of material the viewing screen will need to be. Do I need something of a metallic consistency for the viewing screen? Or can I just use a piece of regular glass or a hard sheet of clear plastic like what you see in some screen doors?
The good ideas are pouring in.
Yesterday, I had this thought (below). Tell me what you think about it and if it would be possible. Feel free to point out any possible roadblocks as well.
Here is what I want to experiment on first:
*I'm going to build a frame and box to make a 42"-50" wide screen LCD TV with legs to stand on (Similar to the Gateway wide screen Plasma TV's)
I want the LCD to be projected to be in the back of the baox case to project forward. It should look like this (but not with the back so deep):
_________________
/ |
/ |
/ Fan | |
|Lcd * light source | <====== viewing screen
\ | |
\ |
\_________________|
LL ======== Standing Legs
I will position the frensnels similar to the designs where you use the small box.
I will have to position the mirrors in a way where the image beams off of one mirror and then beams off of another and hits the screen for viewing. My hypothesis is that I will need to sit the LCD lower and facing upwards with the mirrors in a like position because there is no way everything will be able to position straight ahead in such a small space. This will be a challenge.
I will also need to figure out what type of material the viewing screen will need to be. Do I need something of a metallic consistency for the viewing screen? Or can I just use a piece of regular glass or a hard sheet of clear plastic like what you see in some screen doors?
Splitting image
Hi folks,
Splitting the image can be done with boxes for that speial purpose. They're not DIY though, but are used frequently in concerts, shows, etc... where "ordinary" monitors are stacked 2x2 or 3x3 (depending on the needed size).
HOWEVER... putting displays side by side leaves a "blank" line where there is no picture. A 2x2 panel will produce a cross in the middle, while a 3x3 will produce a grid shape between the displays.
Jennice
Hi folks,
Splitting the image can be done with boxes for that speial purpose. They're not DIY though, but are used frequently in concerts, shows, etc... where "ordinary" monitors are stacked 2x2 or 3x3 (depending on the needed size).
HOWEVER... putting displays side by side leaves a "blank" line where there is no picture. A 2x2 panel will produce a cross in the middle, while a 3x3 will produce a grid shape between the displays.
Jennice
You nead a rear projection screen. THey have fiber optics in them and are backed with a fresnel lens somtimes.
jennice
thanks for the info , but yeah you are right about the split line that would be in the middle but i guess also that would depend on how far you wer to sit from it and how big the spit was, probally an inch would be typical, but anyway such as technology things get smaller in time.
trev
thanks for the info , but yeah you are right about the split line that would be in the middle but i guess also that would depend on how far you wer to sit from it and how big the spit was, probally an inch would be typical, but anyway such as technology things get smaller in time.
trev
Hmmmm...... Another Idea
So I'm searching around the net and come across a visual aid product made for the those with vision issues.....
It's a called a TV screen enlarger:
http://www.universalc.com/tvse.htm
http://www.maxiaids.com/Scripts/prodView.asp?idProduct=2469
These enlargers take a standard TV image and and then enlarges it up a few times without distortion to the picture.
What's good about these enlargers is that they are able to blow up the TV image by two time it's size!
But I did notice that most of them are made with a curved surface to match a curved TV, so I'm not sure if that would be a problem using a flat screen TV with it.....?
My idea is to take take this magnifying material and use a standard flat screen CRT TV, maybe even an HDTV like the 32" Advent HDTV ($449, 1080i), and create a magnifyer to fit this TV's size. This particular HDTV has a function that lets you watch everything in 16:9 mode.
So what I would do is cut the magnifying screen in a wide screen shape and attach it like what you seen in the link I posted above?
I would then create a box around the TV's area and lock the screen in with the back of the TV exposed so that you could still plug things into your A/V's jacks and such.
I think by doing this I will be able to learn ways to improve upon the ideas I have presented and hopefully find a way to create large, super cheap CRT' TV's with HDTV capability.
What do you guys think about this project? Any insight?
I still also need to figure out the whole building of an all-enclosed LCD TV. Any mores ideas on that are welcome also.
Altec is onto something with using rear projections screen case. I'm going to search around to see if these parts can be obtained, so maybe I can get my hands on one to use in the project.
So far, it looks like these ideas are going to work.
I'm off to do more research..............
So I'm searching around the net and come across a visual aid product made for the those with vision issues.....
It's a called a TV screen enlarger:
http://www.universalc.com/tvse.htm
http://www.maxiaids.com/Scripts/prodView.asp?idProduct=2469
These enlargers take a standard TV image and and then enlarges it up a few times without distortion to the picture.
What's good about these enlargers is that they are able to blow up the TV image by two time it's size!
But I did notice that most of them are made with a curved surface to match a curved TV, so I'm not sure if that would be a problem using a flat screen TV with it.....?
My idea is to take take this magnifying material and use a standard flat screen CRT TV, maybe even an HDTV like the 32" Advent HDTV ($449, 1080i), and create a magnifyer to fit this TV's size. This particular HDTV has a function that lets you watch everything in 16:9 mode.
So what I would do is cut the magnifying screen in a wide screen shape and attach it like what you seen in the link I posted above?
I would then create a box around the TV's area and lock the screen in with the back of the TV exposed so that you could still plug things into your A/V's jacks and such.
I think by doing this I will be able to learn ways to improve upon the ideas I have presented and hopefully find a way to create large, super cheap CRT' TV's with HDTV capability.
What do you guys think about this project? Any insight?
I still also need to figure out the whole building of an all-enclosed LCD TV. Any mores ideas on that are welcome also.
Altec is onto something with using rear projections screen case. I'm going to search around to see if these parts can be obtained, so maybe I can get my hands on one to use in the project.
So far, it looks like these ideas are going to work.
I'm off to do more research..............
Oh yeah, I probably should ask you guys if you have any ideas as to the name of the magnifying material used for the enlargers???
I have'nt been able to find this information. It's possible that it's nothing special but I'm unsure so if anyone knows please post it here!
I have'nt been able to find this information. It's possible that it's nothing special but I'm unsure so if anyone knows please post it here!
i like your idea Projecto7. It wouldn't cost much more than to build a good DIY projector. And with CRTs, you dont have to worry about lamps or ambient light. I hope this works out.
you guys
dont use a crt to project.
it does NOT produce enough light to use under the conditions of ambient lighting and also does not produce enough sharpness. If you are using a crt out of a crt projector then they are made for that so dont worry about wat i just said but what i did just say applies to standard television monitors.
____
Jake
____
dont use a crt to project.
it does NOT produce enough light to use under the conditions of ambient lighting and also does not produce enough sharpness. If you are using a crt out of a crt projector then they are made for that so dont worry about wat i just said but what i did just say applies to standard television monitors.
____
Jake
____
***UPDATE***
I have found a company that sells a wide screen TV magnifier that will fit the criteria of the Big screen CRT TV project I proposed.
Check it out: (scroll down to the bottom of the page)
http://www.alecs.tv/eng03/alecstcce...lly_impairedLow_visionScreenznmagnifiers.html
Also take a look at this one:
This second standing magnifier has a nice look. One down-side with all of these magnifiers is that it seems to be difficult to find one larger than 96 cm (about 38").
I'm trying to find one to project an image to about 42"-60", and 30 something inches is not going to do.
I have found a company that sells a wide screen TV magnifier that will fit the criteria of the Big screen CRT TV project I proposed.
Check it out: (scroll down to the bottom of the page)
http://www.alecs.tv/eng03/alecstcce...lly_impairedLow_visionScreenznmagnifiers.html
Also take a look at this one:
An externally hosted image should be here but it was not working when we last tested it.
This second standing magnifier has a nice look. One down-side with all of these magnifiers is that it seems to be difficult to find one larger than 96 cm (about 38").
I'm trying to find one to project an image to about 42"-60", and 30 something inches is not going to do.
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