Re: [Phys-L] smartphones
BC: The only way to do lens systems like this is with matrix optics. You
model each surface with a matrix and each translation with a matrix. The
rays are a 1xn matrix that includes the 3D position relative to the optical
axis and all the 3D ray angles. Typically that would be a 1x6 ray matrix,
but better systems include polarization as well. (From basic physics you'll
recall that different polarizations have different reflection and
transmission properties. Hence things like Brewster's angle.)
You then set parameters as design goals and work the surfaces/translations
to find a local or global minimum of the optical aberrations and image
quality that you have as design parameters.
There are many optical design programs that will do this, with a few of
them being the industry standards of course. Still, the basic optical
physics and matrix math are all the same. When I started my optical
engineering career in the late 70s I was doing this on VAX mainframes.
Today any decent desktop workstation will do a complex system in a few
minutes.
And, yes, knowing what phone you have is a good first step to understanding
what cameras are on board! :-)
John
- - - -
John E. Sohl, Ph.D.
WSU Brady Presidential Distinguished Professor Emeritus
Department of Physics and Astronomy
Department of Environmental Science
Department of Being Retired and Loving It
Weber State University
cell: (801) 476-0589 (Text me, I don't answer the phone if you are not in
my contacts.)
On Wed, Feb 27, 2024 at 10:00 AM <phys-l-request@mail.phys-l.org> wrote:
>
> ---------- Forwarded message ----------
> From: bernard cleyet <bernard@cleyet.org>
> To: "phys-l@phys-l.org" <Phys-L@phys-l.org>
> Date: Tue, 27 Feb 2024 16:17:47 -0800
> Subject: Re: [Phys-L] smartphones
>
> W/O plowing thru your links, may one describe the lenses with 3D
> matrices?
>
> bc …. ustabe able to use them for skew rays. And he doesn’t know which
> ’phone he has.
>
>