[simpits-tech] new screen...

[Gene Buckle]

On Mon, 29 Nov 2010, dabigboy at cox.net wrote:

>>
>>> I will say this, even in multi-million dollar AF sims, I've yet to see
>>> perfect edge-blending. But usually the rest of the display area is
>>> immersive enough that you quickly forget about it.
>>>
>> Which sims are you referring to?  Collimated displays or the "pentagon"
>> screen system used for sims like the F-15?
>
> The daytime sims I recall at FlightSafety had no noticeable edges 
> between displays, leaving me to guess at how many displays were actually 
> running. Same for the older night sim (VITAL9, I think) although since 
> it was night-only I could have easily missed the edge imperfections. I 
> think VITAL9 uses some sort of lens in front of the pilots, unlike a 
> modern projected collimated display. The newer day sims are all 
> collimated against a spherical mirror, not unlike Gene's project, and 
> look amazing.
>
The Vital II I worked with used individual displays (5 I think) along with 
beam-splitter boxes and mirrors.  Night-time visuals only of course.

> Btw Gene, your screen just keepings getting better! I am anxiously 
> following your developments. :) Once I get a bigger house, I will 
> probably want to upgrade from my current monitor, and I have all but 
> eliminated other options aside from some sort of genuine collimated 
> display.
>
Don't eliminate that fast - we're still in a position of not being able to 
give detailed instructions on how to build one.

> Hey Gene, quick thought for you. Have you considered going to something 
> more advanced than even a high-end DLP or LCD projector? I'm thinking of 
> the true-black issues we have with these systems. I was so used to my 
> old CRT monitors that when I switched to LCD, the bright "darkness" 
> surprised me. I suppose you would have to round up some old CRTs and rig 
> up a fresnel lens system, basically a homemade project with a CRT 
> instead of an LCD. Not sure how you would get the CRT bright enough 
> though.

The optics would likely cost me more than the projectors.  Right now I'm 
looking at right around $700 which when you add in the cost of a new TH2G 
as well....  It makes one nauseous...

g.

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