Found a good reflector

[mikekniner]

By the way I found out this relfector is elliptical.
Thanks for the info, any other ideas for an elliptical reflector?

 

[Property]

Most OHP's use two fresnels and the system is basically this (pic below):

So you can guess what problems may occur with 2 fresnels and different varieties of reflectors.

As far as other types of lenses i'm not so sure....I still need to do some more investigation of different types of lenses etc...

 

[Property]

Elliptic reflectors are really interesting...I haven't had any SOLID ideas with elliptic reflectors but i'm sure there are some good ones...Basically this is the concept of an ellipse so, you can think up all kinds of ideas:

 

[Property]

So your reflector being "half" an ellipse will direct all light eminating from the bulb (located at focal point) and hitting the reflector surface, to the second "imaginary" focal point....if the imaginary focal point is at "infinity" then you have a parabolic reflector.


As far as ideas for this reflector...nothing solid yet....I was mainly looking at it for LOA fluorex lights, but nothing solid out of it.

 

[mikekniner]

Ok, Thanks for all your help, I think im just going to stick with another reflector I have, it works and provides great results, ill put the elliptical one aside for a bit

 

[Property]

Ahhh...right...so that explains your hot spot....I guess. The scotch tape technique will probably end up being the best fix for the hot spot then......

But that's a big *** reflector....So your whole hot spot might cover your entire LCD screen so you might end up without a noticable hot spot...How big is your hot spot (?) and how far away from the wall is your reflector?