😕 STEP 1- O.K. Ive been trying to figure out this reflective thing. I wanted to know how shining a light on the lcd would let you project it onto a wall. So what I did is I took my overhead projector lens off, placed a book at around a 45 degree angle on the platform for the transparancies and held the lens to project whatever may be there at the wall.
what I saw was kind of cool... If I held the book at the right angle ( mind you I'm not using a mirror, this is just an experiment.) I could project the book onto the wall. it wasnt overly bright. about 1 or 2 times brighter than the 100" tv but it was as sharp as hell. there was big time ambient light as it wasn't enclosed in a box or whatever. put it on a screen, in an enclosed box with proper lighting angles and so on... this way may just work.
there are a couple of things I did notice though. you may need super bright indirect light as the book was glossy and at a perfect 45 degree angle ( without mirror ) it became one huge hot glare projected on the wall. I may be wrong but I did this just to see how shining light on a solid oject would let it be projected.
step 2 in a day or so.
what I saw was kind of cool... If I held the book at the right angle ( mind you I'm not using a mirror, this is just an experiment.) I could project the book onto the wall. it wasnt overly bright. about 1 or 2 times brighter than the 100" tv but it was as sharp as hell. there was big time ambient light as it wasn't enclosed in a box or whatever. put it on a screen, in an enclosed box with proper lighting angles and so on... this way may just work.
there are a couple of things I did notice though. you may need super bright indirect light as the book was glossy and at a perfect 45 degree angle ( without mirror ) it became one huge hot glare projected on the wall. I may be wrong but I did this just to see how shining light on a solid oject would let it be projected.
step 2 in a day or so.
Great!
That is good news. The only dif. would be that is a real object and we are projecting a virtual image. But the gamecube and psone lcd's have a reflective surface for the backlight and to reflect ambient light back as to brighten the image. So it should work just about the same I'm hopeing! Cant wait to try it myself. Ever notice when your waiting on somthing through the mail, it seems the mail is 10x slower than normal-arghhh! Anyhow as for the light source I was thinking, why not use a reflector with it as to aim the light more onto the panel and less directly shot into the lens and mirror? This would brighten the pic quit a bit.🙂 Great to see your trying this. Me too soon! Let me know how step2 goes, I'm very interested!😀
That is good news. The only dif. would be that is a real object and we are projecting a virtual image. But the gamecube and psone lcd's have a reflective surface for the backlight and to reflect ambient light back as to brighten the image. So it should work just about the same I'm hopeing! Cant wait to try it myself. Ever notice when your waiting on somthing through the mail, it seems the mail is 10x slower than normal-arghhh! Anyhow as for the light source I was thinking, why not use a reflector with it as to aim the light more onto the panel and less directly shot into the lens and mirror? This would brighten the pic quit a bit.🙂 Great to see your trying this. Me too soon! Let me know how step2 goes, I'm very interested!😀
I havent quite figured out how I will do this yet. The plans at bstv for the reflective method are the same as any opaque projector but I may try using my overhead somehow because its already got bulb and fan built in. After, if it works good, I may try a home built projector made out of wood or some thing. But for now I'm going the easy way until I know the end results. 😎
That is a good idea.🙂
For me though I dont have a OHP, so I might aswell get building the box huh.🙁 Ohwell, "In the name of science" Haha. Now if that danged lcd would get here.🙁 I think I will entertain myself with some box building tonight. Now for the deseign, hmmm.....😀
For me though I dont have a OHP, so I might aswell get building the box huh.🙁 Ohwell, "In the name of science" Haha. Now if that danged lcd would get here.🙁 I think I will entertain myself with some box building tonight. Now for the deseign, hmmm.....😀
Got my panel today!!!😀 Should have some results here soon to talk about. It is a Interact mobile one. It looks great, very good detail and color no lines or anything. Nice contrast too! Black looks black. Should look good projected. Of course then it will be black looks greyish but hey, it'll be big! I built a opaque projector but I dont know. Prob. are gonna need a HUGE light source and that means more heat- the oposite of my reason for a smaller panel. Gonna end up with doing a transmisive one anyhow to compare to. Will be good to see the dif.😉
FINALLY Got it apart! It was a bugger but twell worth the effort. Only had a 1" ribbon and that was a issue to work around. I did it by stacking the boards like in a stereo system. One over the other.😀 Now onto light source and focusing it down to 5" for lcd. Getting close now. Will post more as I get more results. How is your projector going Eli? Keep with it, in the end we will prevail.😀 
ok, the reflective method is just a pipedream. now I am mad and determined to build a diy version. I found a overhead panel in a local a/v store and am going to check out this route first.
R.I.P.
100 " t.v.
R.I.P.
100 " t.v.
Yep, I found the same thing. It just doesnt work for LCD panels. But I have had good results using the transmisive way.😉
I have a good plan for a projector... But I must find a lens with higher magnifacation than an over head type. I will be using a 5" panel ( transmisive style) but with an overhead lens my pic is only 50 inches... From 13 feet away. I want at least 100 inches, any ideas on what kind of lens I should use?
Mine is about the same size at the same distance too. But I got 24' to work with so its no a prob. yet. THe easy solution is to use two lenses for the objective thus increasing the magnification. Place them at focal from each other then move that lens assembly back and forth to focus. I will warn you though. 2- 3x lenses at focal length of each other is 3x3=9x magnification. So 50" on a 3x lense would be 150"s on a 9x lense. But I dont know what power your lense is. Two 2x would be good for moderate magnification. Also more than one lense increases the acuracy of the replicated image aswell. Single lens is the simplist (lenslet). A Double lens set is far better for clarity. Triplet lens set is best for correct colors and acurate image. This is why real LCD projectors have triplet lens assemblys. Hope that helped.😉
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also the controller is on top of the LCD in the last pic, but it isnt attached, it was just laying there at the time, the backlight is easily removable and then the display only has those two ribbons... it dosent blur for me, and they say its TFT and LOOKS like a tft, believe me anything that isnt TFT is noticable...
anyway i put it behind a DeltaIV and in front of two of the LOA lamps and it looks pretty dam good... as good as any of the other 5.4" LCD screens...
next project is an actually LCD panel... like 640x 480 😀
also it dosent look as pixilated as it does in the pics... thats just my camera dosent like taking pics of LCDs dunno... it does look pixilated in real life, but not THAT bad
How big is it projected? You say you can see pixels but not that bad? I cant see pixels on mine. But then again I'm only at 4' right now. AT some point it will look pixely just dont know how big it takes. Prob. 6'? I heard the gamvues are a little lower quality while searching psone panels- is this true? I mean have you seen other panels and that one at the same time? Just wondering cause they are cheap! That wold be great. Mine (InterAct)is like $100 new I got thisen used for $50. I've seeen the gamevue for $50 new on sites.... why the huge price dif? Anyhow, I'm sure it is active TFT (I know mine is) or it wouldnt be able to handle the psone graphics, it would def. blur in fast motion. All around pretty good little panels arent they. I know I was surprised! Also mine has only one ribbon. THe rest are like the speaker wire off cdrom to soundcard. But with more connetions.
P.S. Very nice pics....!
P.S. Very nice pics....!
kopykake
Tinker, the pic you posted earlier is from a commercial machine for cake decorators and is called a Kopy Kake.
i have tried ( my friend is a Belgian baker here in Washington state) to use a lcd screen at the spot where he puts a drawing (he's got hundred's of drawings) . sorry the picture is not clear and colors are a mismatch.
1) the elns is used for 2 feet projecting, so that could help
2) 2 light bulbs could be ok, but you need to avoid teh light reflection in the mirror part and that, i have not been able to avoid.
Tinker, the pic you posted earlier is from a commercial machine for cake decorators and is called a Kopy Kake.
i have tried ( my friend is a Belgian baker here in Washington state) to use a lcd screen at the spot where he puts a drawing (he's got hundred's of drawings) . sorry the picture is not clear and colors are a mismatch.
1) the elns is used for 2 feet projecting, so that could help
2) 2 light bulbs could be ok, but you need to avoid teh light reflection in the mirror part and that, i have not been able to avoid.
You mean the one at top of page? I drew that....I do know what you mean about the cake decorators though, I have seen them. I am sure they are very similar in the lens department. I was just showing him how to make the image larger at a shorter throw distance from projector. Like they do as a matter of fact. They also have cake decorators that are phasing them out really quick. Its a HP printer gutted and remade with stainless steel parts. The ink cartridges are replaced with color food dye and then it prints the cake from the computer by the printer head sweeping over the top of cake. No more projecting then tracing...😀 What will they think of next?
Hey tinker,
you know your stuff about lcd displays...I need help on mine. I have the module out of its casing but I cannot remove the backlight because as well as the plastic stuff that connects the driverboard to the lcd there is the same kind of green plastic (with circut lines ) connecting the driver board at the top and bottom. Is there a way around this or should I get a diferent panel. As far as I can tell its hopless but your the expert. Its a gamecube screen.
Does anyone know if the ps one screen works? I thought i saw it posted here but I cant find it anymore.
Thanx
you know your stuff about lcd displays...I need help on mine. I have the module out of its casing but I cannot remove the backlight because as well as the plastic stuff that connects the driverboard to the lcd there is the same kind of green plastic (with circut lines ) connecting the driver board at the top and bottom. Is there a way around this or should I get a diferent panel. As far as I can tell its hopless but your the expert. Its a gamecube screen.
Does anyone know if the ps one screen works? I thought i saw it posted here but I cant find it anymore.
Thanx
Eli said:
Thanks for the compliment but I dont think I deserve the title expert yet.😉 Anyhow those plastic pieces you decribed sound like the driver board ribbons. They have wires in them right...The trick is they dont like to be flexed alot so be carefull about bending them. If you look under the ribbon-at the socket its in on the controler board. There is a clip right below it, very hard to see if not looking for it. It should just pry outward with a small screw driver. Thats what I did. Its like a shim that squeezes the ribbon in place and makes contact with the bair traces at the ends. After poping off the ribbon pulls right out, more like falls out even. Then you can go about removing the backlight. Carefull of the lcd panel ribbon also. they are usually black at bottem of panel hole width of panel itself. This goes to the LCD driver board the one thats fastend to the backlight. I have two driver boards a small one that is connected to the lcd itself and another that divides the video/sound signals and etc. Hope that helped ya and if you have any other questions let me know.
The psone (playstation brand) panel has one prob. The input is combined in a mini din jack not rca like we usually use. Sound and video use the same cable like on cam corders...you prob. can get around it though I dont know for sure. I also am not sure about if it works when not plugged into ps as I dont see a selection switch for input on it? I've heard others on dif. sites that had prob. using this panel as a standalone. Its also the most expensive of all ps panels aswell but I'm sure the quality is best too. I would go with either a cheaper Gamevue or get a Interact like i have. The interact has only one ribbon which is very nice but its only about a 1" long. So I had to stack the driver boards. Went to 6' image today and it was pixeled but thats really big for such a small cheap panel ($50. ebay). So I'm sticking with 4' wide which is about 62" diag.
O.K. I did what you said, it worked but there are still 2 problems.
1- the lcd is way to dark even for my 650 watt halogen overhead light. I just get a very dark blue screen.
2- there is no image yet because the two vertical ribbons are not connected. just the horizontal. i imagine that it requires some kind of soldering of wires to join them
1- the lcd is way to dark even for my 650 watt halogen overhead light. I just get a very dark blue screen.
2- there is no image yet because the two vertical ribbons are not connected. just the horizontal. i imagine that it requires some kind of soldering of wires to join them
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