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[MF3D.FORUM:140] Re: Light for viewer question

  • From: Tloc54452@xxxxxxx
  • Subject: [MF3D.FORUM:140] Re: Light for viewer question
  • Date: Fri, 4 Feb 2000 23:26:34 EST

In a message dated 2000/02/03 00:59:35, thubin@xxxxxxxxx writes:

>One alternative is to line up several LEDs horizontally. This will
>produce an image of a line of LEDs. Location of the eye anywhere on the
>line will intercept one or more LEDs. Image brightness will be
>proportionate to the number of LEDs imaged into your eye. To me that
>means that small images are desirable. This is accomplished by using
>LEDs with small viewing angles and a long focal length lens. This will
>produce a small image of each LED.

How about using crossed cylindrical lenses?  Then you keep your vertical
spread low and your horizontal spread higher.

John B