Color wheel
I noticed a motor and color wheel for sale at www.bgmicro.com for $1.49 - #ACS1060. Dont know if this could be made useful for anything, but for the price, thought I'd mention it.
I noticed a motor and color wheel for sale at www.bgmicro.com for $1.49 - #ACS1060. Dont know if this could be made useful for anything, but for the price, thought I'd mention it.
Panels on ebay, imho
The idea of "We" may extend far beyond the active readership of this forum and certainly beyond the active participation.
I think the market for panels on ebay is hot! People are buying OHPs and panels all over the place! I believe most folks "get it" that you can put these two pieces together, get decent projection performance of a video or PC screen, for far less than the cost of a real projector.
From my personal experience, I'd get a panel from any other possible source, rather than 'ebay'. I'd also advize to know what you're buying, or for all your trouble, you'll end up dissappointed.
Particularly in the area of color, response time, transmission, screen-door.
Color means yeah it's color, but they're all not quite right in terms of hue or saturation.
Response time means that when images move fast, the panel can keep up with it and not get all blurred.
Transmission means that for all the light you pump through the thing that you'll get enough out to be useful; better than the necessary "pitch black room".
Screen-door means the granularity of the LCD. Does it look like an image with a piece of chicken wire fence in front of it and to what degree?
Maybe it's time to start a panel/LCD quality thread, where we can put our experience with various panels.
I hope all the VP140s are sold by now; great deal considering what you have to go through and what you end up with otherwise. IMHO, of course!
The idea of "We" may extend far beyond the active readership of this forum and certainly beyond the active participation.
I think the market for panels on ebay is hot! People are buying OHPs and panels all over the place! I believe most folks "get it" that you can put these two pieces together, get decent projection performance of a video or PC screen, for far less than the cost of a real projector.
From my personal experience, I'd get a panel from any other possible source, rather than 'ebay'. I'd also advize to know what you're buying, or for all your trouble, you'll end up dissappointed.
Particularly in the area of color, response time, transmission, screen-door.
Color means yeah it's color, but they're all not quite right in terms of hue or saturation.
Response time means that when images move fast, the panel can keep up with it and not get all blurred.
Transmission means that for all the light you pump through the thing that you'll get enough out to be useful; better than the necessary "pitch black room".
Screen-door means the granularity of the LCD. Does it look like an image with a piece of chicken wire fence in front of it and to what degree?
Maybe it's time to start a panel/LCD quality thread, where we can put our experience with various panels.
I hope all the VP140s are sold by now; great deal considering what you have to go through and what you end up with otherwise. IMHO, of course!
Scot_lad, of course 'speed' was the wrong term. What i mean is 'focal ratio': focal length / aperture, normally specified as a F/xxx value
xblocker.
xblocker.
Killer lamps
Well I was at the electrical supply house today so I asked a friend there for some help with lamps so he gave me the GE Lighting book!! This can also be found at www.gelighting.com but it is slow as hell and will take you 1434412435 hours to find what you want. I have been looking through the book and I have found some focused 3 degree lamps with 10,000 lumens and rated for 3000-6000 hours and there do get hot so a fan would be a good thing to have but the thing is the color temp on them are from 3000-4000 k is that good for projection? if not can some kind of filter be used to fix that problem? If you want to you can call GE tech Support to 1-800-GE-LAMPS Ill be giving them a call and check some things out.
Well I was at the electrical supply house today so I asked a friend there for some help with lamps so he gave me the GE Lighting book!! This can also be found at www.gelighting.com but it is slow as hell and will take you 1434412435 hours to find what you want. I have been looking through the book and I have found some focused 3 degree lamps with 10,000 lumens and rated for 3000-6000 hours and there do get hot so a fan would be a good thing to have but the thing is the color temp on them are from 3000-4000 k is that good for projection? if not can some kind of filter be used to fix that problem? If you want to you can call GE tech Support to 1-800-GE-LAMPS Ill be giving them a call and check some things out.
http://micro.magnet.fsu.edu/primer/photomicrography/colortemperature.html http://micro.magnet.fsu.edu/primer/lightandcolor/colortemp.html
I just ran across these and I had to share. I also found something real nifty!!!
Color Temperature Conversion Calculator
Use our color temperature conversion calculator to determine the appropriate filters for converting microscope illumination from one color temperature to another. Simply choose the starting color temperature and the desired final color temperature from the pull-down menus, and our interactive Java calculator will automatically perform the calculation
I just ran across these and I had to share. I also found something real nifty!!!
Color Temperature Conversion Calculator
Use our color temperature conversion calculator to determine the appropriate filters for converting microscope illumination from one color temperature to another. Simply choose the starting color temperature and the desired final color temperature from the pull-down menus, and our interactive Java calculator will automatically perform the calculation
The Lamps
Well heres the specs of the lamps I found tell me what you think.(The ones in the yellow)
And here is what it looks like.
I will soon post the price of the lamp and ballast soon as I find out.
Well heres the specs of the lamps I found tell me what you think.(The ones in the yellow)
An externally hosted image should be here but it was not working when we last tested it.
And here is what it looks like.
An externally hosted image should be here but it was not working when we last tested it.
I will soon post the price of the lamp and ballast soon as I find out.
I think this bulb is nice because of the built-in reflector, but the color temp is not that good, and 11500 lumens from a 150watt bulb isn't really that great either. I've seen around 100 lumens per watt with some MH bulbs, and also with a much nicer (near 6500k) color temp. But that doesn't mean that aren't somewhat suitable. Let us know if you find a price.
Does anyone have any experience with the metal halide bulbs at Home Depot? I think they have 175watt and a 400watt, both made by Phillips, but they don't have any specs on the packaging. They are around $20.
Thanks for the links, Marklar. Let us know if you find any pricing info on those bulbs.
-f4
Does anyone have any experience with the metal halide bulbs at Home Depot? I think they have 175watt and a 400watt, both made by Phillips, but they don't have any specs on the packaging. They are around $20.
Thanks for the links, Marklar. Let us know if you find any pricing info on those bulbs.
-f4
http://micro.magnet.fsu.edu/primer/photomicrography/colortemperature.html
Goto that site about halfway down the page it will show you Color trmp dosent matter. What did I say it dont matter?? YEP!! Kodak makes corectional lenses and on this site there is a calculator that will show you what lenses you need.
To Obtain: 5500K Starting From: 3000
Add these filters to the light path 80A + 82A
Dont forget to read every thing I post its very important stuff fellas!
Goto that site about halfway down the page it will show you Color trmp dosent matter. What did I say it dont matter?? YEP!! Kodak makes corectional lenses and on this site there is a calculator that will show you what lenses you need.
To Obtain: 5500K Starting From: 3000
Add these filters to the light path 80A + 82A
Dont forget to read every thing I post its very important stuff fellas!
Not enough lumens?
well they do make a 1000 watt bulb with 6 degree beam thats 63000 lumens but I thought that was over kill it color temp is 4000 and is good for 3500 hours.
well they do make a 1000 watt bulb with 6 degree beam thats 63000 lumens but I thought that was over kill it color temp is 4000 and is good for 3500 hours.
Filtering
Marklar
It's all very well having these temperature correction filters but they are likely to heavily cut the overall output for the bulbs and it makes just as much sense to cut out another problem and get the best possible solution (high colour temp lamp) rather than adding extras to the project, I for one will continure looking for a white light.
Nick.
Marklar
It's all very well having these temperature correction filters but they are likely to heavily cut the overall output for the bulbs and it makes just as much sense to cut out another problem and get the best possible solution (high colour temp lamp) rather than adding extras to the project, I for one will continure looking for a white light.
Nick.
filtering
A real kicker would be if one could adjust the image colors to simulate the filter output before projection with the low Kelvin lamps.
A real kicker would be if one could adjust the image colors to simulate the filter output before projection with the low Kelvin lamps.
Grumpy-Git
Thanks for the pointer. I can now see "101 Monitor Profiles" on CD for $9.99 on ebay.😀
Thanks for the pointer. I can now see "101 Monitor Profiles" on CD for $9.99 on ebay.😀
Bulbs
Well from what I have seen to save you time if you dont want to use that bulb then don't look for a bulb from GE that was the best one i could find all the others that are focused point bulbs either have 3000 lumens with 2000+ hours life or 20000+ lumens with only 100 hours or less life this is the only route with GE if you want life and lumens on a point source light.
Well from what I have seen to save you time if you dont want to use that bulb then don't look for a bulb from GE that was the best one i could find all the others that are focused point bulbs either have 3000 lumens with 2000+ hours life or 20000+ lumens with only 100 hours or less life this is the only route with GE if you want life and lumens on a point source light.
Phillips Bulbs
http://www.lighting.philips.com/nam/product_database/pdf/sag_2001.pdf
Heres the link for the Phillips bulb PDF its 164 pages :/
http://www.lighting.philips.com/nam/product_database/pdf/sag_2001.pdf
Heres the link for the Phillips bulb PDF its 164 pages :/
lens
fender4,
sorry didn't mention to you in my previous post that I just did the first half of the experiment, I only did the "reducing image step". I don't know the next step result, that is "projecting the image to the screen step", because I still search the best light source I can get.
BTW from theory, if we put object (LCD panel in this case) greater than 2x focal length (fl) of convex lens, we will get image size smaller than the original.
http://www.education.eth.net/acads/physics/light-XI.htm
Shorter fl will reduce distance from LCD panel to the lens, but will produce distorted image (ie:blur image on all corner of the image).
In my experiment, I used fl=90mm (3,6") it was blur!
But, when I move the lens further away from 2xfl, the whole image became clear. It was 3" image, with distance from LCD to the lens is around 16".
you're right about "printable version" now it's a lot easier to find something in this looooooooong thread!
fender4,
sorry didn't mention to you in my previous post that I just did the first half of the experiment, I only did the "reducing image step". I don't know the next step result, that is "projecting the image to the screen step", because I still search the best light source I can get.
BTW from theory, if we put object (LCD panel in this case) greater than 2x focal length (fl) of convex lens, we will get image size smaller than the original.
http://www.education.eth.net/acads/physics/light-XI.htm
Shorter fl will reduce distance from LCD panel to the lens, but will produce distorted image (ie:blur image on all corner of the image).
In my experiment, I used fl=90mm (3,6") it was blur!
But, when I move the lens further away from 2xfl, the whole image became clear. It was 3" image, with distance from LCD to the lens is around 16".
you're right about "printable version" now it's a lot easier to find something in this looooooooong thread!
Good Panel / Bad Panel???
I started a thread is for voicing your experience with various LCD panels, regarding suitability for DIY video projector use.
This includes all forms of LCD devices; raw panels, projection panels, panel monitors, panels from actual projector units, etc.
Hopefully this will be of use to those seeking a panel to buy, but asking the question "which one?" This way, they wont have to read/search through the whole giant thread for clues...
Please take a moment to enter any useful information there, if you've bought an LCD panel for this project, or have any other experience with LCD based projection devices.
Someone else can start a similar thread for the CRT sources!
I started a thread is for voicing your experience with various LCD panels, regarding suitability for DIY video projector use.
This includes all forms of LCD devices; raw panels, projection panels, panel monitors, panels from actual projector units, etc.
Hopefully this will be of use to those seeking a panel to buy, but asking the question "which one?" This way, they wont have to read/search through the whole giant thread for clues...
Please take a moment to enter any useful information there, if you've bought an LCD panel for this project, or have any other experience with LCD based projection devices.
Someone else can start a similar thread for the CRT sources!
Hi there, i found this thread a few dayz ago and I'm bizzy reading it, got to page 31 from the 85 so I'm catching up. First of all i want to compliment everyone on the great progress being made =) i can't wait to start making my own projector. But i have some other stuff i have to finish first. Anyway the reason I'm posting is that i saw a lot of people where having trouble finding high res lcd modules, i happend to stumble across some intresting pages selling modules that are about 6 to 7 inches and have a resolution of 640*480/ 10 inch with 800*600. They allso have the 16:9 with 1440 to 234 res.. erhm look for yerself me summing this up makes no sence 😀
http://apollodisplays.com/
intresting pages from lcd manufacturers here:
http://www.mark-products.com/
http://www.kyocera.com/home.cfm
Anyway I'm enjoying the thread and planning on makin a lcd projector, but i still haven't seen a clear overview about what lenses and mirrors etc i should be looking for (have seen some dead ebay links and a few names of lenses but they don't make any sence to me)
I would really appriciate a clear overview with info about what i should b looking for and how it should be put together. I mean when i buy a 5,6 inch lcd display what sort/size of lences etc should i get and how should they be placed. Allso some more pics of the results wouldn't hurt 😉 owh and if anyone needs some webspace to host their site or pics about this then don't hesitate to drop me a line coen@9worlds.net
tia ppl,
Axel
http://apollodisplays.com/
intresting pages from lcd manufacturers here:
http://www.mark-products.com/
http://www.kyocera.com/home.cfm
Anyway I'm enjoying the thread and planning on makin a lcd projector, but i still haven't seen a clear overview about what lenses and mirrors etc i should be looking for (have seen some dead ebay links and a few names of lenses but they don't make any sence to me)
I would really appriciate a clear overview with info about what i should b looking for and how it should be put together. I mean when i buy a 5,6 inch lcd display what sort/size of lences etc should i get and how should they be placed. Allso some more pics of the results wouldn't hurt 😉 owh and if anyone needs some webspace to host their site or pics about this then don't hesitate to drop me a line coen@9worlds.net
tia ppl,
Axel
Color filters
Well I called and asked a pro about the color filters and thier $20 each for 6X6 gel and it lets 2 stops of light through that is 1/4 of light (In Photo cameras) But he was not sure for 11,000 lumens of light because the 2 stops is the light actuly gling through the camera lens and to the film :/ so if you know what this will do to a HID light source please tell. My 2 lcd displays arived today and DONT buy one without a power supply!! The only place I could find a power supply for one of them is the people that sold it and they want $210 for one.
Well I called and asked a pro about the color filters and thier $20 each for 6X6 gel and it lets 2 stops of light through that is 1/4 of light (In Photo cameras) But he was not sure for 11,000 lumens of light because the 2 stops is the light actuly gling through the camera lens and to the film :/ so if you know what this will do to a HID light source please tell. My 2 lcd displays arived today and DONT buy one without a power supply!! The only place I could find a power supply for one of them is the people that sold it and they want $210 for one.
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