Re: ATM Thumbnail mirror

[Aart Olsen <aolsen@prairienet.org>]

Seems like you could glue a weak plano convex lens to a cheap
back-silvered plane mirror.  The lens would act like it was double
convex.  This has the advantage of not having an exposed reflecting
surface.

Aart

PK6811S@ACAD.DRAKE.EDU wrote:
> 
> I am constructing a red-dot type finder using a tiny mirror.  It's
> not exactly a red-dot since it will project a small picture at
> infinity, think of Dilbert's face projected across the sky and you will
> see what I mean :-)
> 
> The layout is something like this:
> 
>               sky
> 
>    picture   glass          mirror
>      |           /              )
>      |          /               )
>      |         /                )
>      |        /                 )
> 
>                 ^
>                eye

-- 
Aart Olsen
aolsen@prairienet.org