I have recently picked up a psone screen and fresnel. So now i have begun the hunt for a lightsource. I would like plenty of light so that i can see the screen descent during some daylight. Anyway, I have come across this bulb: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7547961650&rd=1&sspagename=STRK:MEWA:IT&rd=1
Is that good enough for the small screen? Also how would i go about setting it up (wiring,sockets)?
Lastly, does anyone have any websites with info about metal halide bulbs? Information on setup and purpose of the ballast?
thanx
Is that good enough for the small screen? Also how would i go about setting it up (wiring,sockets)?
Lastly, does anyone have any websites with info about metal halide bulbs? Information on setup and purpose of the ballast?
thanx
I guess what i really need to know is if i can just solder two wires onto the two prongs and plug it into an outlet since its 120v?I have ruled out the metal halide since it cost alot more and this is my first attemp at projector building.
soldering wires
Yes you can. That lamp gets drivien directly with 120 VAC from the wall outlet.
But make sure you include a good fan pulling air around the lamp, and then pushing it outside the box. You will also need to protect plastic fresnels and your LCD from all the heat one of those puts out. DIYprojectorCompany has some IR filter glass that works pretty well.
Yes you can. That lamp gets drivien directly with 120 VAC from the wall outlet.
But make sure you include a good fan pulling air around the lamp, and then pushing it outside the box. You will also need to protect plastic fresnels and your LCD from all the heat one of those puts out. DIYprojectorCompany has some IR filter glass that works pretty well.
I decided to up the stacks a little and order a 500watt eld halogen 
. I am going to have to come up with my own reflector. As far as this, has anyone tried using the reflectors from a large flashlight?
I do plan to run 2 fans, one pushing in and other pulling out. Also picked up some lexan for the ir filter. Plan on running 2 of these in a row. If this works as well as i hope, i will probally upgrade to a metal halide once my bulb blows out. However this halogen is rated for 2000 hours of use.
Anyone have reflector ideas (budget build)?
. I am going to have to come up with my own reflector. As far as this, has anyone tried using the reflectors from a large flashlight? I do plan to run 2 fans, one pushing in and other pulling out. Also picked up some lexan for the ir filter. Plan on running 2 of these in a row. If this works as well as i hope, i will probally upgrade to a metal halide once my bulb blows out. However this halogen is rated for 2000 hours of use.
Anyone have reflector ideas (budget build)?
reflectors
I have never seen a metal reflector in a flashlight. I think they are all plastic, which will melt or burn. You need a metal or mirrored glass reflector. One cheap idea is to use an Ikea napkin holder as a spherical reflector. (Highly polished aluminum) Other cheap ideas use mixing bowls or soup ladels. (Stainless steel, not as good as aluminum.)
Lexan will not cut IR by much. (It will melt if you get it too hot.) It does cut UV, which is important. If you want to cut some of the IR (halogen has LOTS ), then you need one of these:
DIYprojectorCompany.com IR glass
Rosco Thermashield film (BH Photo sells Rosco products online)
Rosco hot mirror
exclusiv-online.com IR/UV filter
I have never seen a metal reflector in a flashlight. I think they are all plastic, which will melt or burn. You need a metal or mirrored glass reflector. One cheap idea is to use an Ikea napkin holder as a spherical reflector. (Highly polished aluminum) Other cheap ideas use mixing bowls or soup ladels. (Stainless steel, not as good as aluminum.)
Lexan will not cut IR by much. (It will melt if you get it too hot.) It does cut UV, which is important. If you want to cut some of the IR (halogen has LOTS
), then you need one of these:DIYprojectorCompany.com IR glass
Rosco Thermashield film (BH Photo sells Rosco products online)
Rosco hot mirror
exclusiv-online.com IR/UV filter
Reflector
The large 100000 candle power rechargeable flashlights have a metal reflector. I just drilled a hole thru one and slid a 500 halogen out of a shop light thru it. I makes alot of light but not as focused as I would like. It does make alot of heat, I have a 4" 120V fan blowing directly on it and the temp stays very acceptable.
The large 100000 candle power rechargeable flashlights have a metal reflector. I just drilled a hole thru one and slid a 500 halogen out of a shop light thru it. I makes alot of light but not as focused as I would like. It does make alot of heat, I have a 4" 120V fan blowing directly on it and the temp stays very acceptable.
Reflector
The large 100000 candle power rechargeable flashlights have a metal reflector. I just drilled a hole thru one and slid a 500 halogen out of a shop light thru it. I makes alot of light but not as focused as I would like. It does make alot of heat, I have a 4" 120V fan blowing directly on it and the temp stays very acceptable.
The large 100000 candle power rechargeable flashlights have a metal reflector. I just drilled a hole thru one and slid a 500 halogen out of a shop light thru it. I makes alot of light but not as focused as I would like. It does make alot of heat, I have a 4" 120V fan blowing directly on it and the temp stays very acceptable.
Ok that bulb was way too HOT. After 3 seconds it started to literally melt the lcd. I don't understand how some can get away with using this bulb. Anyway, I'm in dire need of a cheap cool light source. There has to be something cheaper then that $200 dollar HQI from diyprojectorcompany. I was looking into the setup that was mentioned here: http://www.diyaudio.com/forums/showthread.php?s=&threadid=65296
but they even mentioned being able to feel heat from 3 feet away. So what else in there?
cheapest alternative
That thread you pointed to is your best bet. Hard to beat the prices for such a high quality light source.
Ushio 400 Watt retrofit MH lamp: $38 33000 lumens, 20000 hours, 5200 K color temp
http://www.atlantalightbulbs.com/ecart/10Expand.asp?ProductCode=UHI-S400DDUSHIO
Matching 400 Watt S51 HPS ballast kit: $62.50
http://www.goodmart.com/products/243289.htm
Buy a mogul socket locally for $5 - $8
That's all you need for a very nice cool light source that will run for the next decade!
"Hot" is a relative term. One of these MH lamps will put out much less heat than a tungsten halogen lamp with the same lumen output. MH is actually more efficient than fluorescent or LEDs, in terms of lumens per Watt. The inefficiency of any lamp is the amount of heat they put out.
All you need to block the heat is a piece of hot mirror, selective window film, Rosco Thermashield, DIYprojectorCompany's IR glass, etc. The latter is only about $11 for a piece that would be large enough.
That thread you pointed to is your best bet. Hard to beat the prices for such a high quality light source.
Ushio 400 Watt retrofit MH lamp: $38 33000 lumens, 20000 hours, 5200 K color temp
http://www.atlantalightbulbs.com/ecart/10Expand.asp?ProductCode=UHI-S400DDUSHIO
Matching 400 Watt S51 HPS ballast kit: $62.50
http://www.goodmart.com/products/243289.htm
Buy a mogul socket locally for $5 - $8
That's all you need for a very nice cool light source that will run for the next decade!
"Hot" is a relative term. One of these MH lamps will put out much less heat than a tungsten halogen lamp with the same lumen output. MH is actually more efficient than fluorescent or LEDs, in terms of lumens per Watt. The inefficiency of any lamp is the amount of heat they put out.
All you need to block the heat is a piece of hot mirror, selective window film, Rosco Thermashield, DIYprojectorCompany's IR glass, etc. The latter is only about $11 for a piece that would be large enough.
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