P3D Re: Mirror Lenses

[Steve Berezin <Sbere@xxxxxxxxxxxxx>]

Bob Wier wrote:

> At 7:09 PM -0700 on 3/13/98, Steve Berezin wrote:
>
> |I don't know if this is relevant but I have a slide viewer made by the David
> |White (realist) company which uses a long focal length partial mirror to
> |view slides.  It is called a "Realorama".  I found that it is relatively
> |ineffective because it is difficult to get enough light to view the slides
> |easily.  It is a steal-the-light viewer but it may be more effective if
> |artificial light is added. Also the resolution just was not very good due to
> |the grainy nature of the light disperser.
> |
>
> Hi Larry - if it's the same as mine, there is a MAJOR design flaw as
> the entry for the light ends up against your forehead when you attempt
> to use the viewer. I can't imagine what they were thinking of-
> the optical path should have been folded once more with another
> set of mirrors ...     :-)
>
>               Bob Wier
>

Actually I found mine works well when I use my forehead mounted caving light...
:-)

--
Steve Berezin
sbere@xxxxxxxxxxxxx



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