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Lighting technology
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At LED Lease we emphasize the importance of lighting in any professional situation.
We believe our customers should not compromise on quality. A switch to sustainable
lighting should only be realized if it is possible to maintain - or improve - the
quality of light.
In this perspective, it is a benefit to understand the general basics of lighting
technology and to be able to specify which aspects of lighting contribute to the
specific atmosphere in your business. LED Lease is of course able and keen to help
you in this process.
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Light output
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Determine total lumen, lux and required light patterns based on functional and design
user specifications
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When switching to sustainable lighting, it is important to choose a product that
provides you with the light you need. The light output together with the beam angle
and shape of the lamp determines the amount of light at specific place. The absolute
output of a lamp is measured in lumen (total light output), the intensity of light
in specific direction in candela (the emitted light power in a particular direction).
The light output at a specific spot is measured in lux (light per surface area).
The light from an individual led is direction. By using lenses, rosters and multiple
leds mounted in different directions, light can be adjusted to the demands and design
specifications of the user.
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LED Lease helps to evaluate lumen and lux requirements for its customers, and whether
directional light (spots) or a broader beam angle is desired. Beam angles and lenses
need to be determined based on function and design specifications.
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Color and warmth
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Assess and adjust color temperature (CCT) and color rendering (CRI) based on user
preferences and needs
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The Color Rendering Index (CRI) is a measure for light color rendering relative
to daylight colors. Light can furthermore be experienced as ‘cool’ or ‘warm’ depending
on the color temperature (CCT), measured in Kelvin.
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LED Lease assesses not only CRI and color temperature, but evaluates the consistency
of light colors over multiple lamps. We ensure that manufacturers apply the most
strict quality control measures and use only same colored leds, ‘binning’, in production.
Professional users benefit especially from consistent colors in hotel lobbies and
hallways, office buildings and corporate environments.
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Efficiency
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Quantify the efficiency of led
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Light Emitting Diodes are the most efficient light sources currently available.
We measure the efficiency of light sources in lumen per watt. The lumen per watt
efficiency of the latest leds still increases each year.
It is important to assess the efficiency based on the amount of light that actually
emerges from an application (system efficiency). Light which is lost in the application,
should not be included in the equation. Quantifying the real efficiency also means
looking at the total usages of the lamp, including the ballast. This may be more
energy consuming than just the lamp.
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LED Lease compares all lamps on efficiency, using the LM79 methodology of IE. Key
industry players such as Cree, Philips, Osram, Seoul Semiconductor, Nichia and the
US Environmental Protection Agency endorse this methodology.
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Durability and lifetime
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Determine lifetime of led products based on heat dissipation and component quality
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Light Emitting Diodes are durable, but only under the right circumstances. Leds
can last more than 50,000 hours depending on the design of the product, and quality
of components chosen. The main factors that determine led lifetime:
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Thermal management of the led product – temperature
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Quality of packaging and wire bonding process
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Degradation of the led over time – documented supplier data
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Other components used in the led power supply (capacitors, transformers, etc)
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LED Lease evaluates the heat dissipation capacity of led products based on objective
data. LED Lease checks the manufacturer specifications against objective measurements
and uses the strict L70% definition of led
lifetime by ASSIST (Alliance for Solid-State Illumination Systems and Technologies).
The L70% lifetime definition is:
L70% = the number of hours until which the led system
reaches 70% of its original output (a 30% decay)
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Certification
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Make sure led is safe, contains no hazardous materials, and lives up to industry
standards
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The most important quality aspect of the led product is to comply with all relevant
safety regulations and environmental and manufacturing standards such as KEMA CE
(High voltage, laser, EMC), TüV, UL, RoHS and Energy Star.
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LED Lease ensures that manufacturers comply with industry standards and are certified.
Compliance with safety and environment standards is required to qualify for our
financing agreements. Suppliers and partners work in accordance with the guidelines
of the International Labor Organization (ILO). We visit production sites of suppliers
to ensure that proper working conditions are in place and no child labor is used.
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News
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| - | Led-verlichting op afbetaling voor The Manhattan - Read More | | - | Verlichting.nl: LED Lease vervangt de verlichting van The Manhattan Hotel - Read More | | - | High Profile: "The Manhattan Hotel Rotterdam vervangt verlichting door zuinige led-lampen" - Read More | | - | Misset Horeca: "Manhattan Hotel bespaart 15.000 euro met led-verlichting" - Read More | | - | Interview: "Wij zijn absoluut een voorloper" - Read More |
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