Metal
Halide Presentation
on Metal Halide Technology(.pdf 1.9mb)
The demand for metal halide lighting has grown as it has gained recognition
as a source of bright white illumination in recent years and its advantages
have become increasingly evident. However, metal halide technology remained
relatively unchanged since its development nearly 35 years ago until ADLT
introduced a family of ground-breaking pulse start lamp/ballast systems. These
systems produce a bright, white, natural-looking light and are used primarily
for industrial and commercial applications, including warehouses, factories,
sporting venues and landscape lighting.
Today, the sales of metal halide lamps account for seven percent of the U.S.
market and six percent of the world’s $50 billion market. Increasing
at a rate of 15 percent each year, the growth of this light form has rapidly
surpassed that of all other lighting technologies. This trend is expected
to escalate as mercury and HPS continue to decline in popularity.
By pioneering the new revolution in metal halide lighting, ADLT has been
able to grow and expand its technologies to reach into different aspects of
lighting, including the development of ultra-pure materials, telecommunications
and fiber optics.
Uni-Form®
Pulse Start Systems
Ultra
Pure Materials for HID Lamps
Optical
Coatings for High CRI
Fiber
Optics for Lighting
Uni-Form®
Pulse Start Systems
Uni-Form® pulse start lamps provide superior performance compared to standard metal halide lamps.
Specifically, the advantages of pulse start include: more light, energy savings, safety features (i.e.
shrouded lamps, less mercury and dramatically lowered UV emissions), better color uniformity, faster
warm-up and restrike times and longer life.
The technology lies in its patented formed body arc tube. In this quartz
molding process, each arc tube is accurately shaped to follow the actual curve
of the arc stream. This elliptical shape makes a uniform temperature profile
possible to ensure an even heating of the metal halides inside. The result
is more light generated by the arc tube.
These innovative systems, manufactured by Venture Lighting, can be used as
new lighting installations or used to retrofit mercury and HPS lighting
in warehouses, factories, sporting venues, landscape lighting, etc.
View some our brochures:
Venture Is The Gold Standard (262 KB)
Retrofit
and Save (478 KB)
InLighten™ Program (148 KB)
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Ultra-Pure
Materials
Our light leadership has pioneered the development of high-purity anhydrous
iodides of precise sizes for the discharge industry, dramatically improving
metal halide lamp performance and making possible the development of high-speed
dosing and manufacturing equipment. These concepts were extended to include
sodium-mercury amalgam spheres for high-pressure sodium lamps and, within
the last decade, have been applied to zinc-mercury amalgam spheres for fluorescent
lamps.
We have the ability to combine two or more components into a single sphere,
permitting doses of single spheres with uniform composition and mass for minimal
sphere-to-sphere or lamp-to-lamp variation. This allows for the development
of unique metal halide lamps, such as Venture’s DesignerColor® and
Sunmaster® lines. We have also developed barium peroxide getters for extending
lamp life.
Through our chemical operating unit, APL Engineered Materials, we provide
nearly all of the metal halide salts used in metal halide lamps produced in
the U.S. and nearly 90% of the metal halides and sodium amalgams required
outside of the country. The lighting optical coatings business will be consolidated
within APL to enhance our position as the world’s leader in the production
of ultra-pure materials used in the manufacturing of discharge lamps.
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Optical
Coatings for High CRI
ADLT will soon offer a new technology designed to enhance the performance
of Venture’s Uni-Form® pulse start metal halide lamps. A multi-layer
optical thin film coating will be deposited directly to the arc tube, allowing
for a color rendering index (CRI) of 80+.
Most standard and pulse start metal halide lamps have a CRI (the ability
to accurately depict colors) of 65-80. Our new thin film coatings allow our
lamps to have color rendering comparable to the light quality of ceramic metal
halide lamps, which have a typical CRI of 85.
This technology is being developed by two ADLT companies, Venture Lighting
and Deposition Sciences Inc. These unique arc tubes, scheduled to be released
in 2002.
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Fiber
Optics for Lighting
ADLT has developed a unique dual compound parabolic collector (CPC) unit
for fiber optic lighting systems. By channeling metal halide efficiency into
fiber optic lighting systems, our CPC’s will produce more light, be much
smaller (one-tenth the size) and more affordable than our competitors’
devices.
Combining this technology with Venture’s Uni-Form formed body
quartz arc tubes, containing chemicals from APL and feature thin film optical
coating similar to our telecommunications products results in an exciting
new way of making fiber optic lighting. When we combine our compact dual CPC
with a large core plastic optical fiber (LCPOF), it will result in a system
with higher efficiency and a more even light distribution at the target.
Our new metal halide/fiber optic lighting system is the same cost as standard
fiber optic systems, but uses only one-third the energy. To illustrate, a
system powered by just one of our 68 watt metal halide lamps can replace
six MR16 downlights (common in the retail industry). With these technological
advances, our systems can compete with downlights, track lights, display case
lighting and sign lighting (including neon).
ADLT’s optical fibers (or cables) can selectively emit light out the
fiber side (like neon lighting) or transmit light to the fiber end using breakthrough
polymer technology for superior light output, better color retention and high-quality
light transmission. These solid core fibers for end and side lighting remain
more flexible and durable over life; can be used for indoor and outdoor applications;
multiple lighting from a single light source; are suitable for inaccessible
or hazardous locations; have a high heat tolerance, and emit no infrared rays
or ultraviolet light.
Plastic fibers, in general, depict colors more accurately, provide better
overall light transmission and are more economical than glass fibers. Compared
with stranded core plastic fibers, our solid core plastic fibers also give
up to 30 percent more space through which light can travel and a 33 percent
higher angle of acceptance. As a result, 76 percent more light will pass through
solid core plastic fiber than stranded core.
Our fiber optics are made possible through partnerships with several of the
world’s fiber optic leaders, including: Fiberstars, Inc., the world’s
leading supplier of fiber optic lighting; Crescent Lighting, a United Kingdom-based
state-of-the-art specialist in niche commercial lighting products; and Germany’s
LBM. Unison’s legacy of product development and patented technologies
benefits both Venture and Fiberstars. Unison was an ADLT/Rohm & Haas partnership
transferred to Fiberstars during 2000.
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