[pure-silver] Re: <somewhat OT> New lens design technology
- From: Sauerwald Mark <mark_sauerwald@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Thu, 1 Feb 2007 11:42:36 -0800 (PST)
Very interesting (and I am not just saying that
because I am an engineering graduate of UCSD).
One thing that would worry me however is that the
input aperture is an annulus rather than a circle -
this is similar to a conventional mirror lens such as
the 500mm f8 RF that I have for my old minolta gear.
One of the attributes of this type of lens is that out
of focus point sources of light appear on the film as
donut shaped rings - which most of the time I find
very distracting. I would imagine that this 'lens'
would have a similar feature.
I do like the concept of using internal reflections to
keep the entire light path within the 'glass' - more
efficient than refraction, and I believe that because
of the way the lens is formed, it would be possible to
make lenses with speeds faster than f1.
--- Jim Brick <jim@xxxxxxxxx> wrote:
> Cool stuff!
>
>
http://www.jacobsschool.ucsd.edu/news/news_releases/release.sfe?id=617
>
> Jim
>
>
=============================================================================================================
> To unsubscribe from this list, go to
> www.freelists.org and logon to your account (the
> same e-mail address and password you set-up when you
> subscribed,) and unsubscribe from there.
>
____________________________________________________________________________________
Do you Yahoo!?
Everyone is raving about the all-new Yahoo! Mail beta.
http://new.mail.yahoo.com
=============================================================================================================
To unsubscribe from this list, go to www.freelists.org and logon to your
account (the same e-mail address and password you set-up when you subscribed,)
and unsubscribe from there.
Other related posts:
