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OT: Backlighting stained glass window

 
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PostPosted: Wed Nov 14, 2007 2:16 am    Post subject: OT: Backlighting stained glass window Reply with quote

Hello!

I have the following situation; my church has a large, round stained
glass window (96in diameter) would we would like to illuminate at
night, so it can be seen from the outside. We are looking at an
electric light that would make the stained glass visible from the
street.

The first attempt, a couple years back, was to place a single flood
light 15 feet behind it, and turn it on; well, from the outside, it
looks like there is a single light bulb behind the stained glass
window, very bright, and the rest of the window is much darker. It
does not look good, to say the least. Forward to today, where the
problem landed on my lap.

I am thinking of a way to diffuse the light so that it does not look
like there is a single source (or multiple sources) of light behind
it. I'd like to have the light as uniform as possible.

I DAGS and a search in rec.woodworking, and all I have found were
ideas for smaller windows, for which a single light would b
appropriate. I know that churches in Europe illuminate their stained
glass windows and that it looks really nice. What is it that they are
doing right and that I do not know how to do?

Thanks in advance.

Pierre
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Lew Hodgett
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PostPosted: Wed Nov 14, 2007 2:16 am    Post subject: Re: Backlighting stained glass window Reply with quote

RE: Subject

Use 15W flood lights 12"-18" apart depending on how far way from the
window the lamps are located (bigger is better) Start with maybe 3 ft.

Use 600W dimmers with alternate lamps on a common dimmer. That way you
can control overall illumination and shading at the same time.

This is a total PITA job that will require a lot of evenings playing
around before you are satisfied.

Lew
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Leon
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PostPosted: Wed Nov 14, 2007 2:16 am    Post subject: Re: Backlighting stained glass window Reply with quote

Rope Lighting
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Malcolm Hoar
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PostPosted: Wed Nov 14, 2007 2:17 am    Post subject: Re: OT: Backlighting stained glass window Reply with quote

In article <1195002265.886688.114300@d55g2000hsg.googlegroups.com>, pdavid@bw.edu wrote:

Quote:
The first attempt, a couple years back, was to place a single flood
light 15 feet behind it, and turn it on; well, from the outside, it
looks like there is a single light bulb behind the stained glass
window, very bright, and the rest of the window is much darker. It
does not look good, to say the least. Forward to today, where the
problem landed on my lap.

I am thinking of a way to diffuse the light so that it does not look
like there is a single source (or multiple sources) of light behind
it. I'd like to have the light as uniform as possible.

Well, I've never actually done this but... I think you need to
light the inside of the church (and not the window). In short,
use the walls, roof, floor and the contents as a giant
reflector. Then you'll get a glow through the window.

Trying to light the window directly would be a disaster but
you already know that ;-)

I think it will likely take a lot of lights and a lot of
power to create a really good effect however.

--
|~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|
| Malcolm Hoar "The more I practice, the luckier I get". |
| malch@malch.com Gary Player. |
| http://www.malch.com/ Shpx gur PQN. |
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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RBM
Guest





PostPosted: Wed Nov 14, 2007 2:17 am    Post subject: Re: Backlighting stained glass window Reply with quote

I don't have the answer, however years ago I did electrical work on a church
renovation with a world renowned company called Rambusch. Lighting is one of
their specialties. It may be possible to contact them and ask a few
questions. They're located in NJ, you can find them with a google search



<pdavid@bw.edu> wrote in message
news:1195002265.886688.114300@d55g2000hsg.googlegroups.com...
Quote:
Hello!

I have the following situation; my church has a large, round stained
glass window (96in diameter) would we would like to illuminate at
night, so it can be seen from the outside. We are looking at an
electric light that would make the stained glass visible from the
street.

The first attempt, a couple years back, was to place a single flood
light 15 feet behind it, and turn it on; well, from the outside, it
looks like there is a single light bulb behind the stained glass
window, very bright, and the rest of the window is much darker. It
does not look good, to say the least. Forward to today, where the
problem landed on my lap.

I am thinking of a way to diffuse the light so that it does not look
like there is a single source (or multiple sources) of light behind
it. I'd like to have the light as uniform as possible.

I DAGS and a search in rec.woodworking, and all I have found were
ideas for smaller windows, for which a single light would b
appropriate. I know that churches in Europe illuminate their stained
glass windows and that it looks really nice. What is it that they are
doing right and that I do not know how to do?

Thanks in advance.

Pierre
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