thhey peeps,
here is a very interesting post that Nexzus made in the DIY Small Panel Projector forum. It's a very good find .
check out this link:
http://www.spybag.com/cgi-bin/spybag1/SB3002.html
ap0the0sis
here is a very interesting post that Nexzus made in the DIY Small Panel Projector forum. It's a very good find .
check out this link:
http://www.spybag.com/cgi-bin/spybag1/SB3002.html
ap0the0sis
Mario007 said:
Mario007, just to clarify it is actually a panel that i'm using, infocus does a 550ls Panelbook and a 550ls litepro or something....exactly the same electronics and LCD but one is housed with a light to make a projector....
my optics seem off people, kinda hard to get stuff in scotland so i'm thinking of trynig to find a busted OHP and steal the fresnel and lens off of that, gonna go hunting tomorrow to see what i can find....
oh, and thanks for your reply Wonneil
Cheers
Well I did it again
Yesterday I got a MVR1000/U/BT-37 lamp OMG its freaking bright 115,000 lumens :0 Im happy now but I still would like to make a smaller projector. I found this today but I dont know much about lasers http://www.lasershow.sk/white.htm it says the color is red,green,blue and it makes a white laser light well to me that sounds like it could work but Im not sure on how the brightness on lasers are measured. a small beam like this would be easy to use on a small lcd panel.
Yesterday I got a MVR1000/U/BT-37 lamp OMG its freaking bright 115,000 lumens :0 Im happy now but I still would like to make a smaller projector. I found this today but I dont know much about lasers http://www.lasershow.sk/white.htm it says the color is red,green,blue and it makes a white laser light well to me that sounds like it could work but Im not sure on how the brightness on lasers are measured. a small beam like this would be easy to use on a small lcd panel.
Marklar glad for you that you found a bulb that works for you. Does it fit inside your old reflector? As far as a laser goes I'm afraid a white laser would be too expensive. Look at even the smallest one of those units it weighs 25 pounds.
yea it fit in the old reflector i just had to move it to get the focal point right I made some updates on my site check it out www.hommie.net
What excatly do you mean we should try making lasers? Are you speaking of making laser projectors or actually making lasers?
concerned...
Howdie...I've was wondering if I got totally screwed? Here is a panel that I bid on. It seemed decent enough for a first attempt at projecting. I thought I had stumbled on a great deal...then I saw a line that worried me ( Video PCB not included) I'm not sure what this means but I think it means I have a screen and no way to get a video signal to it. Is this the end of the world?
http://cgi.ebay.com/ws/eBayISAPI.dll?MfcISAPICommand=ViewItem&item=1370785894
Howdie...I've was wondering if I got totally screwed? Here is a panel that I bid on. It seemed decent enough for a first attempt at projecting. I thought I had stumbled on a great deal...then I saw a line that worried me ( Video PCB not included) I'm not sure what this means but I think it means I have a screen and no way to get a video signal to it. Is this the end of the world?
http://cgi.ebay.com/ws/eBayISAPI.dll?MfcISAPICommand=ViewItem&item=1370785894
Marklar
A white light laser would be perfect.
Small size
Highly collimated beam
Only need small optics to expand beam
Can be used to burn hole in neighbours house
Instant on - off
Long life
Dont need a reflector
There is just one little small problem
You need about 2 grand and up to buy one.
Try out a cheap red pointer laser. Place it where your light is. Expand beam to fill fresnel. Restrict to small size picture. You should get a very dim red picture.
Large outdoor direct projection laser projectors usually use at least 1 to 5 watt optic power lasers that consumes enough electric power for a small town. Usually 3 phase with water cooling. These new white light lasers are starting to change that. Especially for laser light shows.
Schnieder Co in Germany displayed several prototype large screen projectors at trade fairs using red/green/blue lasers but has gone into receivership.
300mw is good power for indoor direct projection and should give a watchable picture with some lights on. I work with 5 milliwats and can see very small, very dim picture in a dark room. But that is with direct projection. Not through an LCD panel.
Through an LCD panel with the light losses in the panel, I imagine you would need considerable laser power.
Pity high power lasers are so expensive. But you can make your own. See Sams laser site.
Anyone playing with lasers should be aware of safety issues concerning your eyes.
A white light laser would be perfect.
Small size
Highly collimated beam
Only need small optics to expand beam
Can be used to burn hole in neighbours house
Instant on - off
Long life
Dont need a reflector
There is just one little small problem
You need about 2 grand and up to buy one.
Try out a cheap red pointer laser. Place it where your light is. Expand beam to fill fresnel. Restrict to small size picture. You should get a very dim red picture.
Large outdoor direct projection laser projectors usually use at least 1 to 5 watt optic power lasers that consumes enough electric power for a small town. Usually 3 phase with water cooling. These new white light lasers are starting to change that. Especially for laser light shows.
Schnieder Co in Germany displayed several prototype large screen projectors at trade fairs using red/green/blue lasers but has gone into receivership.
300mw is good power for indoor direct projection and should give a watchable picture with some lights on. I work with 5 milliwats and can see very small, very dim picture in a dark room. But that is with direct projection. Not through an LCD panel.
Through an LCD panel with the light losses in the panel, I imagine you would need considerable laser power.
Pity high power lasers are so expensive. But you can make your own. See Sams laser site.
Anyone playing with lasers should be aware of safety issues concerning your eyes.
LASERS!!!
HMMM, i am starting to consider building a DIY laser... you know that at the focal point of DUKANE, the light is so hot, it actually turns the paper black after a awile. If we could condense that light into a thin ray, i believe that it would have enough energy to burn...
Maybe a should start a new thread...
aleksey
HMMM, i am starting to consider building a DIY laser... you know that at the focal point of DUKANE, the light is so hot, it actually turns the paper black after a awile. If we could condense that light into a thin ray, i believe that it would have enough energy to burn...
Maybe a should start a new thread...
aleksey
Aww yes laser beams. There were some people not to long ago who wanted to build laser projectors. Wow that sounds like a big and expensive job. Not only do you have to refresh and draw 320*240 lines of resolution you have to have three colored lasers doing it. White lasers are kind of interesting but still not a practical solution for illuminating the back of a lcd for a decent price as the price you pay for just the laser might as well buy a DLP projector.
Re: concerned...
That's right, you won't be able to get any video in it. And the PCBs costs upwards of $200 (correct me if I'm wrong). I'd call that a definate screw. Twenty bucks says that over half the people that bought those didn't know what a PCB was.
Spanky_Mcfarlin said:
That's right, you won't be able to get any video in it. And the PCBs costs upwards of $200 (correct me if I'm wrong). I'd call that a definate screw. Twenty bucks says that over half the people that bought those didn't know what a PCB was.
OT
I always thought it'd be funny if you made a laser so powerful that it could travel around the earth and destroy itself.
prjctr_builder said:
I always thought it'd be funny if you made a laser so powerful that it could travel around the earth and destroy itself.
Reflective LCD projector
I have had a look through the forum and cant seem to see anyone talking bout reflective LCD projectors like the one shown at http://www.audiovisualizers.com/madlab/lcd_proj.htm.
Do they work? I was thinking of trying with a 5.5" LCD and some 24W long-life bulbs (give out 1400 lumens each) to minimise heat build up. Am I dreaming???
I have had a look through the forum and cant seem to see anyone talking bout reflective LCD projectors like the one shown at http://www.audiovisualizers.com/madlab/lcd_proj.htm.
Do they work? I was thinking of trying with a 5.5" LCD and some 24W long-life bulbs (give out 1400 lumens each) to minimise heat build up. Am I dreaming???
Attachments
Very much so. Your lights are way way way too weak. Plus it would work only with a reflective type lcd. Note the fact that projection panels can't be used with opaque projectors.
Relfective LCD Projector
Thanks for your feedback Mario007.
I was going to use a car video LCD (see http://www.mp3playerstore.com/stuff_you_need/special/th-5688.htm ) , not one that passes light through such as used for an OHP. The instructions for building it say that you only need two 75-100W globes.
If I used 150W globes and the LCD I mentioned, do you reckon it would work???
Thanks for your feedback Mario007.
I was going to use a car video LCD (see http://www.mp3playerstore.com/stuff_you_need/special/th-5688.htm ) , not one that passes light through such as used for an OHP. The instructions for building it say that you only need two 75-100W globes.
If I used 150W globes and the LCD I mentioned, do you reckon it would work???
Attachments
Marklar!
1000W. Wow. Great work so far on your projector.
I would love to see some more shots of your projector showing movies, etc with both bulbs. Mabye in a room with some lights on too just so we can see how bright and clear it really is! If anything, it's a chance to show off! 😉
1000W. Wow. Great work so far on your projector.
I would love to see some more shots of your projector showing movies, etc with both bulbs. Mabye in a room with some lights on too just so we can see how bright and clear it really is! If anything, it's a chance to show off! 😉