Ace_3000....pictures of Projector?

[ace3000_1]

Originally posted by spectreag
I have the lilliput 7" vga lcd and will be using the same copy lens as ace. I've been trying to narrow down my bulb and reflector selection, and I think that I will use the 150w, 4000k, medium base bulb from a local store. I also plan to use the halo reflector, from home depot, mentioned in another thread. My design is similar to ace's except the bulb will have the ability to move in azmith and elevation inside the reflector. the reason for this ability is to " focus" the bulbs light output and hot-spotsin the reflector similar to the movie theatre projectors I have worked with. The assembly is fairly simple to set up and I will post the design upon competion. However, I have not begun construction yet contingent on input of this idea from those of you with more diy experience. Please let me know of your opinions on this matter, thank you!

Heya buddy, your design is fine, but its somthing that i would use for testing purposes to get the distance to bulb from the reflector right, its not somthing that has to be ajusted at all once you have the corrrect position recorded in the proto model, if you place the bulbs arc at the focal of the reflector, you shouldnt have any problem with hot spots.

Trev

[spectreag]

Thanks for the input, I was thinking along the lines of bulb life of film projectors and forgot that the life on my bulb is much longer. The other questions that I have are, around what temperature will the light box be with a 150w bulb? How effective is plexi at blocking uv?

[promy]

i also reamin with a question about temps...
How hot does it get inside the lightbox? and between lightbox and fresnel?
And what about on the lcd? :-D
How hot may these things get anyway?
Tnx
Promy

[zerbos]

Hi Trev!

How are things going! Could you give us a small update...
Would be great to hear something about your improvements!

Greetings from an eagerly 'follower' of this thread - Keep up the good work!!

Zerbos

[ace3000_1]

The other questions that I have are, around what temperature will the light box be with a 150w bulb? How effective is plexi at blocking uv?

Heya buddy, the light box runs warm to the touch, ive got a new design on it at the moment that should make it run bearly warm, ill be doing that very soon and that design will be in the plans for the 250w design, i feel there is no need to impliment this system into the 150w design.

Plexi does block uv well, but it depends on what grade you get, i dont use plexi to block uv noe glass as the bulbs im using have the uv filter built in, and this makes things alot easier and cheaper.

Trev

[ace3000_1]

Originally posted by promy
i also reamin with a question about temps...
How hot does it get inside the lightbox? and between lightbox and fresnel?
And what about on the lcd? :-D
How hot may these things get anyway?
Tnx
Promy

Heya promy, the light box inside gets hot, it is designed this way to heat the air that is flowing through it so we have a passive cooling afect, after the condenser not very hot at all, the frensel runs just warm, but the lcd does run fairly warm without cooling as the polarisers are working with the light wich creates heat, the rest stays cold. With cooling on the lcd the lcd just gets slightly warm to the touch, without the cooling on the lcd, it gets hot, id says about 50c with the 250w hqi.

All things in the projector have been tested red hot, and it still worked fine, but as we dont want red hot temps we impliment the cooling.

Trev

[ace3000_1]

Originally posted by zerbos
Hi Trev!

How are things going! Could you give us a small update...
Would be great to hear something about your improvements!

Greetings from an eagerly 'follower' of this thread - Keep up the good work!!

Zerbos

Heya Zerbos, i was trying to hold off abit on the updates, but yeah its been a while as ive been trying to find an oem lens for the light engine modd. I do have a few modds going on right now, i dont want to have to keep upgrading the unit once its done otherwise there will be plans all over the place lol.

The light engine modd gives us roughly 25 - 40% of more light from the light engine with a finley tuned condenser, this is another lens and im waiting for it to arive so i can finalise the extra light design, is it worth it? yep forsure.

I do have another modd that im looking at now, it is at the back of the light engine and it directs us more light from the bulb through the condenser, but at the moment this only seems suitible on the cdm-t as the 250w is eating condensers galore lol. We mannage to use about 80% of our light with this method and yeals us a very bright picture, but as i said im stiull working on it because of heat issues on the condenser from the 250w.

Ive also been playing with pyramid designs for a while and found out some interesting data on them.

The machined feet should be here soon so i can finnish the side poles and the overal fixture of the casing, other then that not much more has been going on other then a lack of time on things, but i can ausure you, once i get this new modd sorted out all things are good to go. Ill have a source for you guys to get the barrel fan shortly too and a sorce for the feet, oh and btw the mirror is in lol.

Ill keep you guys uptaded with another update soon.

Trev

[The_Mazta]

Hi ace, bfourcade, amazed at your engineering abilities, love your work man and the rest of the skilled peeps in here,

I've reached the point i'm ready to build my projector, thing is in the uk here, i'm finding it hard to fing the parts, i hear you supply parts, i'm looking to get a good bright image, using a lilliput 7" LCD,

i'm having trouble comprehending all the different len's and condensers people are using, and need to know which are ideal, and where to get them from.

Please let me know if you can supply me with these,

cheers

[ace3000_1]

Heya mazta, youve got mail!

Trev

[dave123]

Originally posted by ace3000_1
Heya mazta, youve got mail!

Trev

Please send me info too, I'm interested as well. Thank you.