TORRANCE, CA — December 14, 2005 — LEDtronics announces LED
Plant Light Bars for Plant Growth.
How do plants capture and
use light? This question has been studied and researched for decades,
and researchers have long known that plants use
different frequencies of light, or different colors of light, for different
purposes. Some colors of light make plants grow and bloom, while others
promote compact growth, and some aren't really used much at all. For
example, the leaves of plants look green because they reflect green
light. If a plant reflects a color of light instead of absorbing it, that color
isn't used to help a plant grow.
Scientists used this knowledge to develop
lamps that would let them raise plants without sunlight. Their new "grow lights" weren't
developed from scratch. They took existing lamps, the same ones used
to light our
homes and factories, and modified them to produce more of the colors
of light that are used efficiently for plant growth.
Today we have many
lamps that can be used to help grow plants without sunlight. They range
from incandescent bulbs to fluorescent
tubes, to the very powerful metallic vapor lamps, such as metal halide
and high-pressure sodium lamps. These lamps can all be used to grow
plants indoors. And they all have the same problem: they produce
a lot of light that plants can't use efficiently.
The lamps we use in
our homes generate a lot of light in the green and yellow part of
the visible light spectrum, because the human eye
is very sensitive to those colors of light. Plants, on the other
hand, prefer light of other colors, colors people don't see very well.
while old-fashioned grow lights will let you grow plants indoor,
they waste a lot of energy making light plants can't use efficiently.
they sure do look bright, don't they?
The LEDtronics PlantLED Difference:
Our grow lights are designed from the ground up, optimized for plant
growth, not human vision. Using light emitting diodes, or LEDs, they
selected the colors of light plants use most efficiently for vigorous
growth and health. The result is a plant grow light that uses very
little energy yet provides all the light your plants need to thrive
indoors. They also used their specialized knowledge of LEDs to make
sure each bulb operates optimally, providing maximum light output and
maximum bulb life.
Our patent pending technology offers other advantages over conventional
artificial plant grow lighting.
Low Energy Use: LEDs are more efficient at producing light than conventional
glass-envelope bulbs. Depending on configuration, a typical LED-PlantBar
uses less than 2 watts of power, an important fact as energy costs
continue to rise.
Targeted Light Output: Unlike "broad spectrum" plant grow
lights, which produce a lot of light plants can't use efficiently,
PlantLED products only deliver the light colors plants want most for
vigorous, healthy growth. By leaving out light plants don't need, we
provide still more energy savings over conventional plant grow lights.
No "White Light" Glare: Other plant grow
lights use technologies generally used to light rooms and buildings,
which makes them very
bright to the human eye. PlantLED products deliver light that is very
bright to plants, but relatively dim to people. Your plants get what
they need without the "white light" glare you don't need.
Low Heat: Conventional grow lights are very hot, running from several
hundred degrees to over fourteen hundred degrees Fahrenheit at the
bulb's surface. Our LED grow lights are merely warm to the touch, even
after operating for hours, and are safe around both children and animals.
This low heat is also safer for your plants, allowing you to place
the lights as close to your plant's foliage as you like, for maximum
effectiveness, without fear of burning their leaves. Delicate blooms
don't fade or burn at the edges, and last longer. Lower radiated heat
also means a savings in room cooling costs.
Low Voltage: Our LED grow lights are low voltage devices, running typically
on less than twenty volts of electricity, making them an ideal choice
for homes with children or pets.
Long Life: Typical LED lifetime is 100,000 hours. This is ten to fifty
times longer than typical glass grow light bulb life expectations.
Replacing glass bulbs every year adds a lot to the expense of a growing
No Ballast: LED-PlantBars weigh just ounces, far less than conventional
fluorescent and metallic vapor systems, which typically need a ballast
weighing up to fifty pounds. Some manufacturers build their ballasts
right into the light fixture, making the light hard to hang in your
home or office. Ballasts also burn out eventually, requiring another
expensive component replacement not needed with LED-PlantBars.
No Reflector: Conventional glass envelope grow
lights emit light in all directions. In order to use as much of
for plant growth
as possible, these lights are generally fitted with bulky, unattractive
reflectors to direct light back toward the plants. With LEDs the
reflectors are built right into the LEDs themselves, so no secondary
is needed. Almost all of the light generated by the LEDs in the
LED-PlantBars is directed straight at your plants.
LED-PlantBar is 21 inches long
and 2.5 inches wide. The optimum distance from the plant for this
product is 12"-18". However the distance
may vary based on the needs of the grower. For seedlings the distance
should be no closer than 3". A full-grown plant that is just being
maintained inside a house or office may be as far away as 24"-36".
white light equivalent output of one LED Plant Light-Bar is approximately
100-watts. This is a good rule-of-thumb to follow when sizing up
how many bars will be needed to grow plants that have been growing
traditional white light sources, e.g. high pressure sodium (HPS)
or metal halide (MH) type lights. The approximation for fluorescent
lights is about one bar per 250-watts. LED based grow lights present
a challenge when replacing traditional grow lights. LEDs are low
energy devices (like fluorescent lights), this means that they
must be closer
to the plants than high energy sources (like HPS or MH lights).
there's a tradeoff between closeness and coverage. Because LEDs
output a "cone" of light, closer means a decrease in coverage.
So a balance must be attained between desired energy at the plant
and coverage in square feet. Some plants require higher energy (plant
to bar) and thus for coverage you'll need to use more bars in an
offset stagger multiple bar configuration to increase coverage. Some
require low energy to grow; so fewer bars at a greater distance are
possible. PlantLED may also be hung vertically within the foliage
of a dense plant for additional energy (a big selling point as traditional
lights cannot do this).
Founded in 1983, LEDtronics® leads where others
only follow when it comes to designing, manufacturing and packaging
LEDs to meet the world's constantly changing lighting needs. Our
inventive product line encompasses an array of direct incandescent
Based LEDs, low-cost snap-in and relampable Panel Mount LEDs, high
intensity sunlight-visible Discrete LEDs, PCB LEDs circuit board
status indicators, surface mount diodes SMT LEDs, full-spectrum rainbow
LEDs, Ultraviolet (UV) and Infra-Red (IR) LEDs.
Pricing for one PlantLED and one 120 volt Ac to 12 volt DC power plug
is $159.95 each, quantity discounts and larger 2, 4 and 8 LED plant
bar systems are available. Contact LEDtronics toll free at 1-800-579-4875,
telephone 310-534-1505, fax at 310-534-1424, click
here to email us or mail at LEDtronics Inc.,
23105 Kashiwa Court, Torrance, CA 90505. Visit our website at www.LEDtronics.com.
The direct web link to the on-line datasheet is as
follows: Indoor Lighting Plant Growing LED-PlantBars