Re: multiple pinholes?

I'm pretty sure you'd just get a picture of the front pinhole. Using
as thin a material as possible is one way to optimize a pinhole.
Stacking several, even with the space between them would create the
same problems as a pinhole in a thick material, often referred to as a
tunnel.

Nick

On Apr 21, 2004, at 1:01 PM, aaron wrote:

> might start to approach a zone plate type thing (multiplying the effect
> of a pinhole)? just a guess. if the pinholes aren't totally black, it'd
> probably just throw diffracted light around. definately worth a shot.
>
> /aaron
>
>> --- On Tue 04/20, Uptown Gallery < murray@uptowngallery.org > wrote:
>> From: Uptown Gallery [mailto: murray@uptowngallery.org]
>> To: pinhole-discussion@spitbite.org
>> Date: Tue, 20 Apr 2004 00:49:29 -0400
>> Subject: [pinhole-discussion] multiple pinholes?
>>
>> Hello:<br><br>Weird thought:<br><br>Pinholes, I read, have none of
>> the
>> optical aberrations glass is plagued by.<br>Resolution is
>> low.<br><br>With a lens, symmetry (dual elements about a stop) cancels
>> much aberration.<br>Alignment and coverage would probably be
>> challenging, but would there be any<br>advantage to a 2-element
>> pinhole?<br><br>Not two next to eachother, but one looking thru thes
>> econd.<br><br>Thanks<br><br>Murray<br>
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Received on Wed Apr 21 13:07:28 2004