[itamar]

Hi,
i have 2 question
I wanna build projector. Can I build it with CRT screen?
I wanna know which lens is better: Pro Field Fresnel Lens or Pro Condenser Fresnel Lens?


Thanks for helping

[simp1yamazn]

no you cannot build a projector with a CRT screen. The field and condenser lenses are used for different purposes, so neither. I suggest you do a lot more reading before moving on, starting with the basic guide here and then the pro guide here

This post has been edited by simp1yamazn: 10 July 2007 - 07:58 PM

[x_25]

Tecknecly you can build one with a crt, it will just be dim, lacking in color definition and low on contrast. and when i say dim i mean it. I built one (yes i commited that sin) and i could just barely see it when the room was pitch black.

[itamar]

Is S15 Projection Triplet working good?
If it's not working good, so can you recommrnd to me another lans.
Thanks for helping

(i am not for usa and my english is not very good )

[simp1yamazn]

true. i committed the same sin as u, but it landed me here, in heav...er lumenlab. and in addition to what x_25 said, it will be impossible to get a perfect focus.

[Durachko]

The standard S15 triplet is generally only good for up to 15 inch diagonal monitors. If you want a 17 inch diagonal build it is recommended to use the "pro triplet".

The pro fresnels are made to be used with the pro triplet.

The standard fresnels are made to be used with the standard triplet.

[simp1yamazn]

the s15 is a very good lens. a lot of people are using them in their 10.6" hi-def PJs. I can't stress enough how important reading the guides is. A lot, if not all of your questions can be answered there.

[itamar]

ok thank

Should I buy it? I have 14 inch screen leptop

This post has been edited by itamar: 10 July 2007 - 08:29 PM

[ki113r]

Again your best bet is to first read all the guides, and then find someone else's plog to compare. You may be able to use the lcd monitor from your laptop but it is going to be more difficult and most likely more costly than going with a standard lcd monitor . Laptop's monitor requires a controller to function, this allows you to plug in various different video sources into your panel .These boards can cost quite a lot of money , so you should do your research first beforhand.

[fmerrill]

ki113r, on Jul 11 2007, 01:17 AM, said:

Again your best bet is to first read all the guides, and then find someone else's plog to compare. You may be able to use the lcd monitor from your laptop but it is going to be more difficult and most likely more costly than going with a standard lcd monitor . Laptop's monitor requires a controller to function, this allows you to plug in various different video sources into your panel .These boards can cost quite a lot of money , so you should do your research first beforhand.

It wouldn't necessarily be more expensive. You can fin deals on 14" desktop LCDs for about $109-$115 USD. I do think they are becoming scarcer by the day though.

However, if you have a 14" panel from a laptop, that is 'free' (due to a bad laptop motherboard or whatever), then the laptop solution can be cheaper, as there is a perfectly fine functioning controller sold on eBay for $35 USD. That model only has a VGA input, just like many of the reasonably priced desktop displays also have.

With shipping to anywhere, it's $51 USD, so, if you have a free laptop LCD, or can get one for less than $30 USD, it's an ok way to go.

You can also get one of the more expensive controllers of course.
In this case he said he already has the 14" LCD (I assume it's actually a 14.1")
So, $51 USD isn't so bad.

This post has been edited by fmerrill: 11 July 2007 - 03:54 PM