Diffusing a bare bulb
 

Hello All,
I am thinking about improving the ambient light in a kitchen. The
walls and the ceiling are made of concrete and I cannot install
recessed lighting. For energy efficiency reasons I would like to go
with fluorescent (either CFLs or liner). For the moment I am thinking
about linear lamps. My question is how can I make the light most
pleasing. This is for an installation outside the USA. What makes a
good diffuser? Any ideas about how one makes one's own diffuser? Is
there an easy way to diffuse the light?
The fixture is mounted directly on the ceiling and at the moment it
bare causing a lot of glare.

Thanks.

MT

Diffusing a bare bulb
 

What makes a
good diffuser? Any ideas about how one makes one's own diffuser? Is
there an easy way to diffuse the light?

Tranmission efficiency. Diffusion angle. Cost. Color neutrality.
Strength and durability.

"Sign white" Plexiglas is a good trade-off of cost vs efficiency.

For the ultimate performance, use holographic light shaping diffusers:

http://www.poc.com/

Expensive, but offset by efficiency savings if properly designed.

Diffusing a bare bulb
 

wrote:
Hello All,
I am thinking about improving the ambient light in a kitchen. The
walls and the ceiling are made of concrete and I cannot install
recessed lighting. For energy efficiency reasons I would like to go
with fluorescent (either CFLs or liner). For the moment I am thinking
about linear lamps. My question is how can I make the light most
pleasing. This is for an installation outside the USA. What makes a
good diffuser? Any ideas about how one makes one's own diffuser? Is
there an easy way to diffuse the light?
The fixture is mounted directly on the ceiling and at the moment it
bare causing a lot of glare.

Thanks.

MT

If you don't have the fixture yet, why not just buy one with a diffuser
built in. It'll look okay and have no fuss.

As for the light, check the color. "Shop Lights" are a very "cold"
color. You can get natural light and some warmer bulbs that are more
pleasing on the eye.

Diffusing a bare bulb
 

you could always buy a difuser panner for a drop cieling and cut it to
fit where you want it, be careful they crack easily, use a hot plasic
cutting knife.

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wrote:
Hello All,
I am thinking about improving the ambient light in a kitchen. The
walls and the ceiling are made of concrete and I cannot install
recessed lighting. For energy efficiency reasons I would like to go
with fluorescent (either CFLs or liner). For the moment I am thinking
about linear lamps. My question is how can I make the light most
pleasing. This is for an installation outside the USA. What makes a
good diffuser? Any ideas about how one makes one's own diffuser? Is
there an easy way to diffuse the light?
The fixture is mounted directly on the ceiling and at the moment it
bare causing a lot of glare.

Thanks.

MT

Diffusing a bare bulb
 

On 21 Sep 2006 15:52:06 -0700, wrote:

Hello All,
I am thinking about improving the ambient light in a kitchen. The
walls and the ceiling are made of concrete and I cannot install
recessed lighting. For energy efficiency reasons I would like to go
with fluorescent (either CFLs or liner). For the moment I am thinking
about linear lamps. My question is how can I make the light most
pleasing. This is for an installation outside the USA. What makes a
good diffuser? Any ideas about how one makes one's own diffuser? Is
there an easy way to diffuse the light?
The fixture is mounted directly on the ceiling and at the moment it
bare causing a lot of glare.

Thanks.

MT


There are inexpensive surface mount units that have slide-in plastic
diffusers. Get one that has a diffuser that can be easily slid out
for a yearly cleaning. On one light I cut an egg-crate plastic cover
that directs the light down and hides the bulbs (except when looking
straight on). You can buy various patterns/colors of clear plastic
sheets at your DIY center and cut to size. Also, there are various
types of fluorescent tubes.

Diffusing a bare bulb
 

On 21 Sep 2006 15:52:06 -0700, wrote:

Hello All,
I am thinking about improving the ambient light in a kitchen. The
walls and the ceiling are made of concrete and I cannot install
recessed lighting. For energy efficiency reasons I would like to go
with fluorescent (either CFLs or liner). For the moment I am thinking
about linear lamps. My question is how can I make the light most
pleasing. This is for an installation outside the USA. What makes a
good diffuser? Any ideas about how one makes one's own diffuser? Is
there an easy way to diffuse the light?
The fixture is mounted directly on the ceiling and at the moment it
bare causing a lot of glare.


You may (or may not) be able to reduce a lot of the
perceived glare just by changing the type of bulb.

Failing that, all the diffusers that I've ever seen
have a side effect of reducing the amount of light
you get. One technique that I like is to put an opaque
mirrored reflector (caret shaped: "^") under the bulb,
so that *ALL* the light you get is bounced off the ceiling.
Kind of like this, only on the ceiling:
http://www.weave.net.nz/?id=93

This only works if the ceiling is light colored, and
it looks funny if the ceiling is textured, and it eats
a lot of the light the fixture puts out, but it WILL
solve the glare problem.

How much headroom do you have to play with?
For that matter, how much MONEY do you have
to play with, cause this stuff:
http://www.ceelite.com/

will solve all your problems...

--Goedjn