"Henry Kolesnik" wrote in
:

I have: 3", 3.5", and 4.75" in diameter.
hank


If they have decent achromatic qualities, they could be used to make a
short focus refracting telescope. I'm sure the focal length is quite short,
though.

I've never seen one. More than one lens inside?

I have: 3", 3.5", and 4.75" in diameter.
hank

"donutbandit" wrote in message
...
"Henry Kolesnik" wrote in
:

Do the lenses out of old projection TVs have any interesting use or
value?

What is it's diameter?

In article ,
"Henry Kolesnik" wrote:

Do the lenses out of old projection TVs have any interesting use or value?
tnx
hank wd5jfr


I take them apart and use some of the elements as large magnifying
lenses. You can have one in each room in the house ;-)

Al

--
There's never enough time to do it right the first time.......

In article , "Henry Kolesnik"
writes:

Do the lenses out of old projection TVs have any interesting use or value?
tnx

With a small flat mirror and light source they can become an
opaque projector...they kind used in classrooms and meetings
of not so long ago when the speaker could point to the paper
being projected.

With a high-intensity spot lamp, they can be a background "fill"
or "color wash" for outdoor Christmas decorations.

...or, collect a bunch of them and resell them, saving profits for a
wide-screen plasma screen TV. :-)

LA

"Henry Kolesnik" wrote in
:

Do the lenses out of old projection TVs have any interesting use or
value?

What is it's diameter?