Hello all
I'm a new user at lumenlab, coming from the forum at diyprojectorcompany.com
At the moment I'm building a 7 inch lilliput pj, the plans are mostly ready, but i was wondering how the LL varifocal lens compares to the standard and pro lenses? What would you suggest for my build?
I see the varifocal is out of stock, is it possible to order it?
Regards from Norway
Full Version: 7" Lilliput - Lens?
QUOTE (Nudel @ Sep 2 2006, 02:34 PM) 
Hello all
I'm a new user at lumenlab, coming from the forum at diyprojectorcompany.com
At the moment I'm building a 7 inch lilliput pj, the plans are mostly ready, but i was wondering how the LL varifocal lens compares to the standard and pro lenses? What would you suggest for my build?
I see the varifocal is out of stock, is it possible to order it?
Regards from Norway
I'm a new user at lumenlab, coming from the forum at diyprojectorcompany.com
At the moment I'm building a 7 inch lilliput pj, the plans are mostly ready, but i was wondering how the LL varifocal lens compares to the standard and pro lenses? What would you suggest for my build?
I see the varifocal is out of stock, is it possible to order it?
Regards from Norway
I used standard lens with Hami8". It works very well. It should be good with 7"llyp.
varifocal lens...... dim corner
pro lens..... too big ..too much to investment for small panel.
Kiat ......from Bodø
QUOTE (kiat @ Sep 3 2006, 08:45 AM)
I used standard lens with Hami8". It works very well. It should be good with 7"llyp.
varifocal lens...... dim corner
pro lens..... too big ..too much to investment for small panel.
Kiat ......from Bodø
varifocal lens...... dim corner
pro lens..... too big ..too much to investment for small panel.
Kiat ......from Bodø
Thanks, I'll settle for the standard lens then. How long should the focus mecanism be able to travel? Is 5cm enough?
Oh, and would it be sufficient to use standard clear glass as a heat shield? Or does "regular" glass mess up the colors?
Nudel, from Molde
Focus travle depends on the focal range that you intend to use. 5cm is lots, provided that you know where the focal point should be, and center it on that. I highly recommend the focal calculator 2 found int he tools section.
If, you have a very goog cooling system and uv filter sheet, regular glass as heat shield works fine.
I used LexanXL10.
I used LexanXL10.
QUOTE (SupraGuy @ Sep 4 2006, 01:16 AM)
Focus travle depends on the focal range that you intend to use. 5cm is lots, provided that you know where the focal point should be, and center it on that. I highly recommend the focal calculator 2 found int he tools section.
With the s15 kit the focal length will be 320 mm, so I won't need much focus travel then?
There was some guy who created a focal system with an old cd-rom, that was kind of nice. But would it be possible to wire the tray motor and create a motorized focal system? I'll try to do that, just for fun
The focal calculator is really great, I've used it a lot. Many thanks go to Dazzzla!
QUOTE (kiat @ Sep 4 2006, 07:50 AM)
If, you have a very goog cooling system and uv filter sheet, regular glass as heat shield works fine.
I used LexanXL10.
I used LexanXL10.
Since I'd need UV glass anyway, I'd rather just get som XL10. I just talked to a local glass supplier, and he would look into ordering some XL10 for me. He had just started working at the shop, so he didn't even know what Lexan was when I asked
That was kind of fun.There have been a lot of different cooling solutions on my drawing board, I'll have to start building the box before I can settle for the final system. Would you suggest one big fan (80/120mm) for cool air, and a small (~40mm) for hot air, or the other way around?
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