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Visual Merchandising Display - Fairchild Books

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interiors—like an Abercrombie & Fitch store. The lamps<br />

are available in correlated color temperatures ranging from<br />

3,000 to more than 20,000 K (kelvin). With “pulse start”<br />

technology, there is improved color rendition, and the K<br />

variance is plus or minus 100 K.<br />

PAR and Ceramic Compact Metal Halide (CDMT)<br />

lamps now produce four times more light than a halogen<br />

lamp of the same energy, and it is also possible to control<br />

glare and focus better with CDMT lamps because they can<br />

be used with reflectors and lenses. As of now, the size of the<br />

CDMT lamp makes it difficult to use in some areas, but the<br />

lighting companies are working on making the fixtures and<br />

reflectors smaller and more adaptable to other uses.<br />

Ceramic Metal Halide Lamps<br />

This is a variation on the old mercury vapor lamp. A ceramic<br />

tube containing mercury, argon, and metal halides is used,<br />

and the electric charge is introduced. The metal halide salts<br />

are partially vaporized, and inside the hot plasma, the salts<br />

are disassociated into metallic atoms and iodine. The temperature<br />

within the tube can be greater than 1,200 K.<br />

The metallic atoms produce a bluish light that is close<br />

to daylight, with a color rendering index (CRI) of 96. It is<br />

also possible to get warm-white lamps with a 78 to 82 CRI.<br />

Some manufacturers, including General Electric, are producing<br />

ceramic metal halide lamps like the new 23-watt GE<br />

ConstantColor CMH Integral PAR38. This lamp provides<br />

excellent energy savings and can be used for ambient and<br />

display lighting in retail settings. The lamps are available<br />

as 10-degree spots, 25-degree floods, and 36-degree wide<br />

floods with a warm, 3,000 K color temperature.<br />

Eye Lighting International of North Carolina produces<br />

a line of Cera Arc ceramic metal halide lamps with 39-, 70-,<br />

and 150-watt ratings. These feature an R9 value of 90 and a<br />

CRI rating of 92—high ratings in the industry. According<br />

to the manufacturer, “These values create rich colors, especially<br />

red, which is the most important color in retailing.”<br />

Rated at 3,600 K, the Cera Arc blends well with fluorescents<br />

and, in addition to the brilliant reds, offers great greens,<br />

blues, and white—all essential in showcasing clothing, jewelry,<br />

and flowers.<br />

40<br />

LED (Light-Emitting Diode)<br />

P a r t 1 : G e t t i n G S ta r t e d — V i S u a l M e r c h a n d i S i n G a n d d i S P l ay B a S i c S<br />

LED is the new kid on the block and one to contend with.<br />

It is being heralded and adapted most readily for all sorts<br />

of uses. Its small size, long life expectancy, and adaptability<br />

make it a popular choice, especially when accessibility to<br />

the light source and maintenance are involved.<br />

LEDs are solid-state devices that, unlike an incandescent,<br />

do not require heating of a filament to create light.<br />

The electricity passes through a chemical compound that<br />

is excited and then generates light. LED lighting requires<br />

a circuit board that allows electricity to pass through it<br />

at a specified current and voltage. The circuit board also<br />

requires the components that allow the LED to operate at<br />

voltages such as 12 Vdc, 24 Vdc, or 120 Vdc.<br />

General Electric has come up with a new LED module<br />

that simplifies LED lighting in directional applications, such<br />

as recessed downlights, tracks, pendants, and sconces. Small<br />

and puck shaped, the twist makes it easy to upgrade LED<br />

lighting with a simple twist of the module into the socket.<br />

The LED’s current popularity is due to its broader life<br />

expectancy. It also has no toxic elements. LEDs can last<br />

30,000 to 100,000 hours, compared with incandescents<br />

and halogens, which last from 2,500 to 5,000 hours. LED<br />

PAR20 floods and spotlights (7 watt) can be used for shop<br />

interiors. Color rendition is improving, and colors in the<br />

white and blue spectrum are getting brighter and warmer.<br />

With its multiple colored light possibilities, LED is being<br />

used for creating color effects in wall washing and signage.<br />

Some of the benefits associated with LED have been<br />

outlined by Environmental Lighting Company, a resource<br />

for these lighting products:<br />

u Extremely low power consumption<br />

u Extremely long life (50,000 to 100,000 hours)<br />

u Durable and insensitive to vibration<br />

u Dimmable and programmable<br />

u Lightweight and compact<br />

u Color without the use of filters or lenses<br />

u No reflectors required to direct light<br />

u Environmentally friendly<br />

u No mercury or other toxic elements<br />

u Recyclable

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