DIY Video Projector

[tech head]

Originally posted by SushiMasterX
'I have not yet begun to post!'

I thought you were going to bed.

[SushiMasterX]

I am the computer of SushiMasterX. I apologize. Arigatoo

[The Xung]

Okay, I'm sick of these spherical aberrations.

Should i try my luck finding a broken OHP off ebay?

or

buy a ~40mm achromat from surplusshed?
http://www.surplusshed.com/list.cfm?Category=Achromats
What are people's thoughts on the 55mm "experimenters" achromat?

Pretty sure the OHP lens will work. But do these "cemented" doublets from surplusshed look like both the lens and correction lens?

Money has become a large issue in this project now.

[Marklar]

Please don't bid aginst me on ebay (cyrix_32) :P I finally found a good panel I will be selling mine soon as I get this one.

[prjctr_builder]

Originally posted by tech head
Well, after getting my projector and video converter I realized that I have no where to set it up. I was thinking about putting it on ebay but I thought I would offer it to you guys first. After all, you guys got me interrested in the projectors in the first place.

What exactly are you selling, tech head....

aleksey

[prjctr_builder]

Allah Ashbar!!!!!!!!!!

[ChuckReese]

Wow, this project is starting to completely take over my life.

I did some tests with my Dukane 680 OHP to determine what I will need for the condenser lens. I ripped out the fresnel that came with the OHP, and projected the source onto the ceiling. From looking at the angle the beam diverges, I think I can use a fresnel with an 18" focal and still fill a 17" diameter aperture. If anyone else has this projector and can verify this, I would appreciate it.

CR

[tech head]

It's a proxima dp2400 with two good bulbs, a dust jacket, and all the connector cables. And, since the projector only has vga input, a composit to vga converter.

[syadnom]

what kind of life are you looking at for a MH light bulb? and how do you power them? do they run off a power converter or just straight 110?

[The Xung]

what kind of life are you looking at for a MH light bulb? and how do you power them? do they run off a power converter or just straight 110?

I'm expecting ~20,000 hours. Enough for me to never have to worry about it. The place you buy the MH from should also sell the ballasts for it as well. The ballast usually converts the 110 to some 400V or so. Most MH run on a Mogul socket which you should also be able to get from where you buy the MH or some local hardware store. Unless you get a pulse start bulb/ballast, you do not need an ignitor.