Lumenlab Optics Group Buy

[brainchild]

These are your standard DIY projection optics.

Get them here: http://lumenlab.com/store/

Dual Focus Fresnel
Forward focal length: 330mm Rear focal length: 220mm
This is a 310mm square fresnel.

Pre-split Dual Focus Fresnel
Forward focal length: 330mm Rear focal length: 220mm Pre-split with a CNC router, you don't have to do any cutting.
This is a 310mm square fresnel.

Projection Lens Triplet
Aluminum case, coated optics. Focal length: 320mm

[dracul]

Brainchild,

Are you selling the same triplet from diylabs or is this larger?
Can you get a larger diameter or better quality optic for objective?

And the fresnels have different groove pitch?

[dracul]

One more thing. Your fresnels are not cut at the corners correct. I dont understand why this is a problem though because my 15 in lcd will be 9 inches high and my fresnel is 12 but with the corners missing its 9 inches on the sides if I just center the lcd on the fresnel top to bottom. If its confusing I will attach a drawing.

[dracul]

How about this with diylabs fresnels and 15 inch lcds?I know the aspect ratio drawings are off so dont mind that but the numbers are correct are they not?

[brainchild]

Dracul, These are not the same triplets from DiyLabs but they are standard OHP projection lenses. The actual clear diameter of these lenses is 63mm. The manufacturers call these 80mm lenses. On the fresnel, these are the standard 310mm square fresnels with cut corners. The corners do not interfere with the 15" panels, but as is typical with these lenses the horizontal length is a few mm short of the actual panel width. The quality of these optics is very good. The projection lens has an anodized aluminum housing and the fresnel is excellent.

These are priced to sell so pick up a couple to replace your tired fresnels.

[mccamp82]

what happens if you dont reach 50 orders? we get our money back right? Comeone guys, please buy these soon. ineed to get started. thanks

[Mr.Kh]

Mccamp, group buys aren't really for those in a rush, but this one looks to be going pretty fast, I've been in touch regarding ordering from outside of the USA, and it's not yet setup yet - I plan to order a few of each, and I'm sure there are a few people who are non-USA that are interested. So don't be suprised if the orders are all done up in the next week or two.

[Mr.Kh]

Brainchild, any progress on the Intl' ordering system?

[brainchild]

Yeah the international order form should be up by the weekend. Also, I have enough money in my savings to cover the rest of the order and I'm starting the wire transfer to China on Monday so that everybody doesn't have to wait longer for the lenses.

[brainchild]

Update: Wired the money to China, optics arrive in about 1.5 weeks. All you international people are covered too, international order page up tonight.