Hi!

Been a member here for a while now, but after trying to create my own DIY pj - and screwing it up (several times) i kinda gave up..

Well since i've bought the guide and now have access to the entire forum thought it would be the best if i only posted this for the customers

I been mailing with one of the employees and she mailed me some pictures of the production process - I then stumbled over this picture:

Just something to look at while brain is taking the sample model appart

VERY cool


I hope more connection options and a true 800x600 LCD can be worked out.

If so I will buy one the instant it happens.

Heck even if we have teh same connections but have a 800x600 screen so all DVDS can be played back with all the pixells and not just widescreen.

These things area BIG step in the right direction for projection.


Wardog

Good find!

Click to view attachmentI deffenately think it's going to happen - it's just a matter of time

Taken from the conversation:

"It is our plan to produce higher resolution projector, but in the near future yet. We need time to develop it.
We will have some new models come out this year. The resolution for the model which will be come out in two month is the nearly same as the PTV01B, but smaller and with the Zoom function."

also:

"I'd like to send you a VCD about our company and our production line of the home cinema LCD projector"

could be kinda nice to see how they do it

If youre interested, i can upload it when i get it..

EDIT:

attached the other pictures - Really not that interesting but here goes:

I cant get over how short it is length-wise,
after looking at the first pic, its clearly a stright light path w light tents.
Im starting to wonder if there are REAL lenses as opposed to fresnals in there.
I was trying to source some rectangular lenses for my PJ, but none were quite big enough.

Anyone else wondering how they pulled off that off??
Maybe it just looks shorter in the pic.

It looks like 6" in front and behind the LCD.... WTF?!?!

Looks just like this one:

HX-7111

480x234 resolution? YIKES!

umm.. not to be mean, but how can you say;



looks just like;

It probably uses shorter FL fresnels.

There ar three possibles that make this projector brighter. High transmittance LCD, small triplet lens to LCD size ratio and a matched pre-condenser/ reflector combination.

DJ

No, please be mean But let's be honest, it probably made in the same China factory. Here a great thread on people who have already used it overseas.

Factory 7"

Well that's some really bad cons they bring out there, i'm not gonna buy a factory made pj where all the corners are faded :S

on the other hand, that thread sounds really anti-factory-7"-PJ'ish (probably because of the topic title "DIY Projector Building is DEAD..." maybe not the most clever choice in words) - or is it just me?

I would die for some more projection pics in a proper resolution!

It occurs to me that the tentative specs (7in, 800x480, widescreen) on the lcd indicate the same or similair lcd as the lilliput. Those put out a nice image, and size versus resolution its really pretty good. This projector looks to be a similair design to the 3M MP8610. It had a 6" vga screen inside that used the same style design as the projectors here and it claimed output around 500 lumens.

As for compact size, My guess is once the projector was designed around the lamp and lcd, it was a small task for the company to have fresnels with a short focal length made. Remember that even though It's listed on a site for diy, it is still a commercial projector with the resources of a rd staff, professional designers, and an infinately greater budget than we have here. So the claims of 1200 lumens may in fact be correct, they probably have the resources to do it right.

It looks to me like they just used the same principles we use in our projectors but did it the way a real commercial company would. Custom parts that cost dirt in bulk, assembled on an assembly line. My thoughts are pretty pessimistic that even though Brain says he's going to try to offer upgradeability to this for us, it wont happen. I could be wrong, but I dont think so.

A lot of people are comparing it to high end lcd systems that cost in the range of 1k and up. Those are a different technology and dont have the kinds of issues ours have, (even brightness, fan noise, etc...). They need to compare apples to apples. Different technology, build quality.

The corners of my sample look nothing like that...

If you look at the triplet v fl the triplet will have a vary low F # this lets them run a large [short fl] condenser lens on the lamp. No magic just a bare arc tube with a vary large condenser lens mounted close, A normal LCD and a low F triplet.

I could to this right now if we could find some 100mm fresnels. The small one are easer to find.

So how does a 7" LCD look at 150"?

If you're looking for fresnels you could try:
Fresnels

From what i'ved found out, the projection is best between 60"-80". It's when youre trying to create the really big images, the corner problems come (or that's what i've been told by ally).

I ain't going for anything larger than 70" so that's good news for me

when are we going to see some more images brain?

I have another sample coming from the alledged factory that produces these. I'm going to compare them and at that time I will get a lot of detailed screenies.

Ok

use this lens

http://cgi.ebay.com/Seerite-Model-6-x-6-Op...itemZ7604015619

and two of the 6.5" fresnels from here.

http://www.anchoroptics.com/catalog/product.cfm?id=24

Throw in a 250 watt lamp from here

http://www.businesslights.com/product_info...c96619a01d907a0

you will need a reflector

http://mail.altmanltg.com/publicsynergy/do...0007&Country=US

and a condenser

http://www.anchoroptics.com/catalog/product.cfm?id=34

mabey a 45mm fl?

throw in a 7" LCD

http://cgi.ebay.com/S-1023-7-TFT-LCD-STAND...itemZ9700706518

your milage may vary

Don't worry, I went in there and set them straight.

I take back what i said. It's not a good thread - that guy pepe, just seems very bitter. Has actually built a diy projector or just mad because he can't. Blake got him all bent out of shape. Just look at that last point on energy.

more pics..

this is taken from the video - it was too big for me to upload, so i ripped out the most important things and scaled them up a little bit (the reason the projections are grainy - looked better in the video) just to get an impression of the performance in a room with light..

...

...

Thanks for the Pics!
Is there any you could upload the video to megaupload, they have free hosting for files up to 250mb?

(Make sure you close the ad that appears on the top right of the page as it oscures the "select file to send")

With too big i meant for my internet connection - you ain't getting far with 128 in upload with a 30 mb file..

anyways

i prefer rapidshare

here ya go

http://rapidshare.de/files/16528799/Compan...uction.rar.html

Thank you!!

"Your satisfaction is the goal we are pursuing"

They do screens as well, will have to have a look into that...

the link did not work for me.

Just tried it there from link "Net-Mirror "Omega": dl3L3.rapidshare.de" and downloads ok

for all of those who don't know rapidshare, here's the process:

1) press the link
2) scroll down and press the button "free"
3) wait the amount of time displayed
4) select your download mirror and press the 3 cifer code displayed
5) press download and youre on your way!

It downloaded a file called CompanyIntroduction.RAR
decoded the RAR and found a single file AVSEQ01.DAT how do you play it???

I got it to work in zoomplayer and media player classic, you might need to have codecs installed, and it should play in any media player then
Link to codecs
Either the full or mega codec packs should do

Worked fine in Media Player Classic which reported that it was encoded in MPEG 1, but couldn't get to work with WMP 10???

I'm not a big fan of WMP 10 , i've found it to be very temperamental at times when handling more obscure file types. Can't say why it didn't work

Worked fine in Mplayer.

So from what I saw this was a promo for the brand Ally. Well I'm glad Brain is taking a look at these and talking to the manufacturer.

Just rename it to AVSEQ01.AVI and it will play fine with any player.

That file name and extension are indicative of a VCD file. Its encoded in MPEG1 format.

Works in the new RealPlayer just fine...

So the specs on the projector seem to have changed even further.
I see now the bulb is listed as a 175watt rather than 260watt.
Also the resolution has dropped from 800x600 to 800x480 to now being listed as a native res. of 640x480.
The 640x480 resolution seems oddball beings its supposedly a widescreen display. While 640x480 is natively full screen.???

Are these verified yet?
Is this the final set of specs?


Wardog

The original projector we were going to sell was Ally brand, and Ally both lied about their specs several times (including printing them on the box) and they made an inferior projector, even though the resolution is native 800x480 (they claimed it was 800x600). After going with another manufacturer that currently sells a 640x480 native projector, we decided that the quality of the 640 device was far better than the Ally. The colors, performance and price were all better! The Ally is a hack job. I care more about even lighting, good color and menus that actually function as claimed than a few extra pixels.

Have a look at the screen shots of the new projector here:

http://www.lumenlab.com/forums/index.php?showtopic=11150

It blows the Ally away.

Those are pretty dang good results.
Considering the 175 watt bulb the results are acually really really good in my opinion. The picture apears pretty clean too.
Looking at Gollums hand with the ring in his palm you can see the lines in his skin and a lot of details in the dirt and debris.
All in all the picture looks very clean and surprisingly bright.
The lower price tag is nice as well.

Wardog

Actually it's a 200w lamp, the older version had a 175w.

Could you get pics of the bulb and light engine they are getting better brightness from half the Watts, we need to figure out what they are doing right.

It's a simple arrangement of reflector, lamp, large precondenser, rear fres, panel, field fresnel, projection lens. They also use a 'light tunnel'.

Off to search after I post this question. Has anyone at Lumenlab used a light tunnel to good effect (i.e. with documented gains)?

I remember reading about light tunnels when I first became a LL member. One thing that stuck out in my mind is that there is a large increase in heat at the LCD, so an IR filter before entering the light tunnel I think is a necessity. There were mixed results as I remember. Light tunnels are also in the back of my brain, but first we need a resonable source for a hot mirror... but from what Brain has been hinting at, something like that may come to pass in the near future... This would make playing with light tunnels much more feasible due to the lower temperatures.

cheers,
gs

If I remember correctly, Jo@joewerb.com got some impressive results with his mylar lined aluminum lightbox:

http://www.lumenlab.com/forums/index.php?showtopic=79&st=100

Been meaning to give this a try myself ....

Hi Brain

I would have to disagree with you strongly on the ally being a hack job.. I have my ally ptv01b for a number of months now and I must say that the quality is excellent. It is a very robust and reliable pj for the price. I have taken the pj apart a few times now to have a look and to clean some dust of the lens and the build quality seems to be pretty spot on. I would be interested to see the contrast in the pj you are selling and the ally ptv01b...

Excellent site by the way.. I was very pleased to see you were selling these projectors.. I know from dismanteling my pj that a number of your very inventive members will have much fun coming up with mods for it... Keep up the good work Brain....