Re: Two Image Lenticulars

[P3D George Gioumousis <georggms@xxxxxxxxxx>]

P3D Gregory J. Wageman wrote
> 
> 
> Bill Stratemeyer elucidates:
> 
> >Let's greatly exaggerate the situation so we can visualize what's
> >happening, Think first of a Lenticular print that is 3D and 1" wide,
> >everything the left eye sees is right of your left pupil, call this a 
> >positive angle. Now enlarge this same print to 10' wide and viewed from
> >the same distance, your left eye will see app 40% of the print at a
> >negative angle( left of the left eye) the same views as the right eye's
> >positive views. So the angle of view across the print, displays a mix
> >of several stereo pairs.
> 
> I don't see how an additional image in between is going to change this
> fact?
> 
> I guess what's missing is a diagram of how the lenticular screen refracts
> the strip of image beneath it.  Damn this ASCII-only medium!  Can you
> recommend a good book on the subject?  One with diagrams of how the
> images are sliced up and placed, and how the eye-rays interact with
> the lenticules?
> 
> >Two image lenticulars are only possiable in very small prints. Larger 2
> >image prints result in only seeing depth in a narrow view between your eyes,
> >this is of course dependant on your viewing distance.
> 
> Why can't you simply repeat the left and right images, as necessary,
> across the screen, rather than using an additional image (as in the
> ImageTech) or two (Nimslo) with a less-than-desirable interocular
> spacing?
> 
>       -Greg W.
> 
> 
> 


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