Re: 3 D Winter Party Report

[gjessing@xxxxx (Jan Gjessing)]

In digest 1130, Bob wier asked;

>Jan - thanks for the report - I'm interested in the 3d laser pointer - can
>you give some details on that? I'm envisioning either two LPs on some kind
>of swivel hinge  or possibly a single one with semi-silvered mirrors to
>generate two beams. Since I've wound up with several, I might like to take
>a whack at building something up. Never thought about that before!

>THANKS!


Bob,
Yes, two LP will give a better lightout put than one unit using semi-mirrors
to split up the beam. 
A simple mechanical hinge for one of lasers and rubber or spring resistance
will be needed to make the laser pointer work gently. A few adjustment
screws to fine tune vertical alignment might be needed too. Remember that
laser pointers might have some internal polarisation which much match with
the proper orientation of the left and right polarising filter you have to
fit in front of the laser pointers.

Have fun - make your own!

jan

-------------------------
And Dan asked about the:

 >Auto anaglyphic slide projection.
 >Feedback: I'd like to hear more about this.
 >-Dan

"Real-time Auto Anaglyphic Projection"
was printed in  "The Journal of Three Dimensional Images", Vol. 6- No.1
1992-3., 
issued by the 3D Forum of Japan.
In short, chromatic aberration (use simple optical elements) will separate
the white light according to the frequency of the different colours. The
tool for creative work is a single slide projector, preferably a type that
will  let you  manipulate the lightbeam path with slits, pinhole masks and
flat field lenses and what you can imagine to be useful. Capture the outcome
on a screen directly. The easiest way is to experiment and explore this
field directly to make the most out of the "non figurative" images. Then to
sample a 3-D anaglyphic print or slide directly, use an ordinary camera.

Just play and have fun!

jan
     
####################################### #######################################
#      Jan Gjessing Skoyenasvn.4C     # #     Jan Gjessing Skoyenasvn.4C      #
#        N-0686 Oslo, Norway          # #       N-0686 Oslo, Norway           #
#        Email gjessing@xxxxxx        # #        Email gjessing@xxxxx         #
#      Tel/Fax +47 22 27 81 53        # #       Tel/Fax +47 22 27 81 53       #
####################################### #######################################
                                         



 


------------------------------