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Overview
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The first improvement to light fixtures made by Bell
Lighting's Research and Development (R&D) team was simple but
radical. Since HID bulbs produce their light on the side of the
arc tube, the team decided to design a fixture that would hold
the bulb in a horizontal position. This way, 50% of the light
would be naturally directed downward - a huge advantage in light
delivery. By comparison, the vertically positioned bulb delivers
virtually no direct light to the ground.
This simple innovation gave Bell Lighting a huge advantage in
light delivery, but was just one of the many improvements set in
motion by the R&D department. Several other technological
advancements were needed to design and build a near-perfect
luminaire.
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Standard Parabolic Fixture
![[ Light delivery of a standard parabolic fixture ]](../images/misc/ld-standard.gif)
Bell Lighting Fixture
![[ Light delivery of a Bell Lighting fixture ]](../images/misc/ld-belllight.gif)
![[ Legend for light delivery diagrams ]](../images/misc/ld-legend.gif)
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The next step was to perfect the overall design
and configuration of the finished reflector. It
had to provide the means to get the remaining 50%
of light, developed by a round bulb, delivered to
a flat surface. Testing has proven that fixtures
built in a round shape are very ineffective at
efficiently redirecting light. As a result of
their incorrect configurations, a large part of
the light developed by the bulb is actually
reflected directly back into the bulb rather than
to the ground.
All Bell Lighting's units make use of flat
panels and proven angles of deflection to maximize
on collective, reflective, light delivery. Equally
important is the distance between the bulb and the
reflective surfaces, for every six inches (fifteen
cm) of distance you add between these two, 50% of
the light intensity is lost. Bell Lighting has
calculated the precise distances and angles for
the most effective reflection of light to the
ground.
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Once the design and configuration of the fixture was
perfected, it was necessary to locate the correct fabricating
material. This material needed to be completely resistant to rust
and corrosion, lightweight, and able to quickly dissipate heat
generated by the bulb.
After extensive testing of many materials, both ferrous and
non-ferrous, Bell Lighting's R&D team chose ISO 9000, 5052 MARINE
ALUMINUM. It is lightweight, 100% rustproof and able to
reflect more heat than it absorbs. Cooler operating temperatures
result in longer bulb life.
Finally, the search was on for the ultimate closure material.
Our research discovered that even under ideal conditions, the
three most commonly used finishes for light fixtures (gloss white
paint, polished metal, and chrome) could not reflect any more
than 75% of the light produced by the light source. We found
these statistics completely unacceptable.
After many hours of research and experimentation, a
breakthrough occurred. By making use of one of Mother Nature's
base minerals and formulating it into a powder-coating material,
we have achieved fantastic light delivery results. Not only does
it reflect a consistent 95 to 98% of the light developed by any
light source; it's also 100% UV/IR resistant, anti-bacterial, as
well as corrosion and acid proof.
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