Ok, Looking at a 19" widescreen samsung lcd tv (the ones on newegg for $300).

If I remember right from someone else's post, the horizontal dimension is around 432mm.

So, taking that into account, how do you light up a panel that big?

I tried playing with various methods in cad, but nothing seems satisfactory.

Is the pre-condenser really the only way to go?

Thanks

(yes, I go all over the map, and will until I actually finalize a design and bite the bullet )

Edit: I really should mention that two of the designs below are frankenfresnels.

Edit: OMG! Really cool new way, see new posts!!!!!!

19" wide screens, have displayable area of 410mm wide

Jeez. What is the most complicated light setup anyone has ever done regarding the number of precondensers and reflectors?

I just came up with a design that requires grinding 3 pro reflectors, and 3 precondensers, but yeilds TWICE the output of a normal precondenser setup. AND, it maintains good angles on the corners, for better evenness in illumination.

I guess I am wondering, if "hard to produce" is really "improbable to produce"???

last one looks like it will create hotspots. I think eveness of light is more important than overall brightness

Hmm... I am not sure where you will think the hotspots will be. I assume because you see three fresnels, you think there will be three hotspots. I think AV did a very successful frankenfresnel (two fresnel) test.

Personally, I think that because each hotspot is smaller, it will actually be a more even image then one ginormous hotspot in the center.

But, this is all my (very uneducated) theory, I guess some day I will have to try it.

Thanks for the input.