On page 7 (of 27) of the Rev 3 pdf, I just noticed, there appears to be an error. Doesn't the Projection Lens (labeled #5) take the light and spread it? In the diagram, it's not doing anything at all--the light is just going through it without any bend.

If the diagram is correct, the image would be upside down and reversed.

Actually, all of the diagrams that show light going through the projection lens have the same problem. The light is not bending at the projection lens point.

Actually this isn't an error, I have done this intentionally to demonstrate the postioning of the projection lens in relation to the collector's focus.

The LCD panel is installed upside down and inverted left to right so the projection lens of course does flip the image upside down and reversed.

Should the LCD orientation to change depending on whether you have the LCD panel placed between the fresnels or placed after both of them? (I'm thinking that it shouldn't change since the projection triplet is place before the focus of the field fresnel, however I wanted to check to make sure)

Thanks in advance for the info.

-Dave-

The LCD would be the same distance from the first optic whether or not you have the optics put together or seperate (I recommend seperate).

Perhaps my question wasn't clear, but I wanted to know about screen orientation, not location/distance. i.e. should the panel be flipped relative to the non-split fresnel design? If the panel is between the fresnels, the image from the LCD is passing through an additional lens, which "could" potentially invert the image, just like the projection lens does.

Panel is still mounted upside down and flipped left to right. The fresnel does not invert the image when used in front.