SuperDave:
The dukane 680's bulb is about 1" across, but I think what really matters is the <b>arc length</b>, not how big the bulb is. I will try to post some pictures tonight.
<i>How bright is you image? Is it watchable with moderate ambient light?</i>
I don't know yet; I am not using an LCD, just a transparency. If your projector is coming soon, you will probably know the answer to this question before I do.
CR
The dukane 680's bulb is about 1" across, but I think what really matters is the <b>arc length</b>, not how big the bulb is. I will try to post some pictures tonight.
<i>How bright is you image? Is it watchable with moderate ambient light?</i>
I don't know yet; I am not using an LCD, just a transparency. If your projector is coming soon, you will probably know the answer to this question before I do.
CR
help meeeeeeeeee....
wtf, 90% of the LCD projection panels have an active matrix LCD, the one that i have bought, has a PASSIVE matrix, does that mean that my panel is a piece of fecies? omg, i am shocked!!!
aleksey
wtf, 90% of the LCD projection panels have an active matrix LCD, the one that i have bought, has a PASSIVE matrix, does that mean that my panel is a piece of fecies? omg, i am shocked!!!
aleksey
680 Light assembly
Here are some images of the light in the dukane 680 I took mine out cuz Im not going to use it.
I emailed an optical engineer at dukane and asked him how to easly reduce the image size hopefuly he'll gimme some useful info.
Here are some images of the light in the dukane 680 I took mine out cuz Im not going to use it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
I emailed an optical engineer at dukane and asked him how to easly reduce the image size hopefuly he'll gimme some useful info.
SWEET JESUS!!
I found a badass simple tool!!
http://www.opsci.com/index.asp?pagetitle=FocalLengthCalc&exten=htm
Go here and input your LCD size in the custom CCD box.
Next box put the distance to the screen.
Then put in how wide you want your screen and BANG like magic you got the focal length of the lens you need!
I checked it on my current setup and it works so guess now I know what lens I need WOOT
I found a badass simple tool!!
http://www.opsci.com/index.asp?pagetitle=FocalLengthCalc&exten=htm
Go here and input your LCD size in the custom CCD box.
Next box put the distance to the screen.
Then put in how wide you want your screen and BANG like magic you got the focal length of the lens you need!
I checked it on my current setup and it works so guess now I know what lens I need WOOT
Marklar...why did you replace the 575W with a 450W(you did use a 450 Watt right?)??
How is the image brightness compared to what it was with the 575W bulb in?
I'm just wondering cuz I bought the dukane FOR the light source and a little for the optics. It seems you arent even using the dukane's light source. If you arent using it I would like to know why if you dont mind sharing...and also if you are not using it would you be interested in selling the lighting electronics?
Thanks,
Dave
How is the image brightness compared to what it was with the 575W bulb in?
I'm just wondering cuz I bought the dukane FOR the light source and a little for the optics. It seems you arent even using the dukane's light source. If you arent using it I would like to know why if you dont mind sharing...and also if you are not using it would you be interested in selling the lighting electronics?
Thanks,
Dave
ooops...I just remembered that you had problems with your dukane...is that the only reason you switched to a 450MH?
Sorry,
Dave
Sorry,
Dave
Super dave well the ballase blew up and I couldnt find a replace ment or rapair it so I used a 400W High output MH compact bulb has about 40,000 lumens. I think it is actuly brighter than it was before only thing the OHP is good for is the optics the bulb is a waste of my hard earned money
MH lamp
Guys,
I found another type of MH lamp, the name is MHN or MHNTD or MHWTD or something like that.
It's double ended, use commonly for floodlighting.
I like the size, it's not as big as HPI type some of us use.
-.http://www.gelighting.com/india/metal_halide.htm
-.http://www.dealec.co.uk/acatalog/De...tralife_Long_Life_Metal_Halide_Lamps_343.html
Guys,
I found another type of MH lamp, the name is MHN or MHNTD or MHWTD or something like that.
It's double ended, use commonly for floodlighting.
I like the size, it's not as big as HPI type some of us use.
-.http://www.gelighting.com/india/metal_halide.htm
-.http://www.dealec.co.uk/acatalog/De...tralife_Long_Life_Metal_Halide_Lamps_343.html
GunawanW!!!
I come back to Jakarta on June 27th! Can we meet? We can begin first "International DIY LCD Projector" club!!
Well, let me know! That would be great. Probably, I stay in Jl. Jaksa with the foreigner's. But, nice if we can meet and talk about crazy science stuff. Then, I go to Jogja'. Look for a teaching job.
Saya goblok man! But, only to make other's relax.
Allakum-asalam!
Hope to see you!
Sushi-man
I come back to Jakarta on June 27th! Can we meet? We can begin first "International DIY LCD Projector" club!!
Well, let me know! That would be great. Probably, I stay in Jl. Jaksa with the foreigner's. But, nice if we can meet and talk about crazy science stuff. Then, I go to Jogja'. Look for a teaching job.
Saya goblok man! But, only to make other's relax.
Allakum-asalam!
Hope to see you!
Sushi-man
projector
Hi All
Looks like the sushi man has been busy.
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.
If you want it just e-mail me with an offer and I will get back to you.
Hi All
Looks like the sushi man has been busy.
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.
If you want it just e-mail me with an offer and I will get back to you.
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.
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.
Ebay
Please don't bid aginst me on ebay (cyrix_32) 😛 I finally found a good panel I will be selling mine soon as I get this one.
Please don't bid aginst me on ebay (cyrix_32) 😛 I finally found a good panel I will be selling mine soon as I get this one.
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
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
projector
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.
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.
more info...
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?
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.
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