LEDs Demystified for Interior Designers

Credit(s) earned on completion of this course will be reported to AIA CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.

This course is registered with AIA CES for continuing professional education. As such, it does not include

content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner ofhandling, using, distributing, or dealing in any material or product.

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Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

LEDs Demystified for Interior Designers

Speaker: Diana Mesh, IES, DLF of HTA Lighting.

Learning objectives “LEDs Demystified for Interior Designers”

LED terminology and technology explained in simple concise terms to assist designers in selection of lighting fixtures and lamps.

5 Learning points1. Basic Lighting terms for LEDs explained2. LED color explained in detail3. How LEDs work and why this affects your plans4. How to understand light levels easily5. LED fixture requirements explained

The Good, the bad and the Ugly-you have been warned!

The Ugly, The Bad and the Good !-Let’s take this apart piece by piece

Color-”atmosphere”- why is it so lacking? Reading a spec sheet- learning a new language Wrong light levels- yes you are in the dark Electrical field issues - not remotely interesting

The Ugly

Let’s talk about both:

CHIP ON BOARD AFTER MARKET When LEDs are integral

to the fixture. Lamps that simply screw

in or have a base to work with an existing fixture that is not LED by design

Wall sconce

CHIP ON BOARD AFTER MARKET

Wall sconce

CHIP ON BOARD AFTER MARKET

Wall sconce

CHIP ON BOARD FRONT AND BACK

downlight

CHIP ON BOARD INTEGRAL LED

Chip on Board

STRIP LIGHTING NOTICE WHITE CIRCUIT BOARDS

After market lamps

FOR EDISON BASE EVEN CANDELABRA

After market lamps

EVEN FOR BI-PIN BASES EVEN FOR FL LAMPS Even straight lamps

Lamp packaging

WHAT YOU NEED TO KNOW JUST TO BUY A LAMP!

How leds make light

WHITE LIGHT IS THE ISSUE RAINBOW REVEALS THE SPECTRUM

Note, there is no such thing as a white ray of sunshine. White is the sum of all colors.

How LEDs make light

WHITE DOESN’T EXIST! REMOTE PHOSPHOR

Blue substrate + coating

Color temperatureDoes it seem warm or cool?

Color temperature Kelvin temperature

Color issuesColor Temperature

Color renditionA critical issue for interior lighting

Color renditionPoor CRI will dull colors

Color Rendition

POOR CRI HIGH CRI Less than 80 for interiors Look for 85 to 97

Color rendition

R VALUES YOU WANT R9 CRI numbers didn’t seem

to say it all. New metrics had to come into play.

Color Rendition

MACADAM ELLIPSE COLOR CONSISTENCY

Color renditionWHERE WILL YOU FIND IT WHERE YOU WON’T

Ugly truth

EXPENSIVE BUT IS IT WORTH IT?

Knock a whole in your budget

The BAD

Light distribution of LEDs is different

How do you gauge light level?

Electrical requirements are different

Light distributionTHEY ARE NOT OMNI DIRECTIONAL, CHIPS ARE FLAT

Not omni-directional

PENDANT WITH CHIP ON BOARD PENDANT WITH AFTER MARKET Light may only go

downward.. You have to ask

Pin spotting is hard

FLAT CHIP TIGHT FILAMENT Not easy to get tighter

than 8 degrees- Low voltage pin spots a

thing of the past?

Light levels

LUMENS NOT WATTS 32 watt FL lamp= 2800

lumens

40 watt A15 = 415 lumens

Light levels

LUMENS LUMENS What you used to know

60 A19 =865 lumens75 A19 = 1150 lumens100 A19 = 1710 lumens150 A21= 2780 lumens

Light levels

LUMENS CANDELAS Amount of light versus

amount of light in specific direction

Electrical requirments

LEDS ARE LOW VOLTAGE AND DC CURRENT

DRIVERS AND TRANSFORMERS REQUIRED

Generally 24 volt DC but you have to check

Where will they be located?

Electrical requirements

DRIVERS NEEDED BUT WHERE?

Electrical requirements

HEAT SINKS LEDS DON’T CREATE HEAT OUT THE FRONT OF THE FIXTURE, BUT THE BACK OF THE CIRCUIT BOARD DOES GET WARM AND A HEAT SINK MUST BE USED AND AIR HAS TO MOVE AROUND THE FIXTURE

Electrical requirment

DIMMING GET THE INFO 0-10 volt ELV or even non-dim

DIMMING TO WARM NOW POSSIBLE

Electrical requirements

READ THE SPEC SHEET READ THE LABELS

THE GOODYes, there is plenty of good

The Good

ENERGY SAVINGS LUMENS PER WATT KEEPS INCREASING

Lumens per watt is now over 100 in some cases

Incandescent lamps consume about 5 to 6 times the wattage for same amount of light!

The Good

THEY DO LAST A LONG TIME CHIP ON BOARD LAST LONGER THAN AFTER MARKET LAMPS

COB = 50,000- 85,000 hours

After Market= 10,000 t0 25,000 hours.. Read the labels!

The GOODTHEY WILL ALLOW FOR SOPHISTICATED CONTROLS EVEN AFTERMARKET LAMPS DIM WARM

Bi-level switching Dimming Remote control Tuneable white light

The Good

THEY HAVE LITTLE OR NO UV ART COLLECTIONS

The GoodLESS FADING OR DAMAGE EVEN LIGHTING LARGE PLANES

On fabrics, rugs

THEY CAN BE TINY AND HAVE BIG EFFECTS

The Good

THEY CAN CURVE THEY CAN BEND

The Good

THEY MAKE NEW FIXTURES POSSIBLE SLEEK DESIGNS ARE POSSIBLE

The Good

NEW DESIGNS ARE POSSIBLE THAT REQUIRE NO MAINTENANCE

The Good

THEY CAN ADD COLOR INDOORS OR OUT

The Good

THEY CAN BE MINIMAL BUT OH SO FUNCTIONAL!

The Good

THEY CAN BE SLEEK INCORPORATE INTO ARCHITECTURAL SURFACES

Require little depth and don’t get too hot

THEY CAN BE CONTINOUS LINES OF LIGHT UNLIKE FLUORESCENTS

The Good

THEY FIT IN SMALL SPACES WITHOUT DARK SPOTS

The Good

THEY CAN START IN COLD WEATHER INSTANT ON!

THEY FIT IN SMALL SPACES ALLOW FOR SMALL FIXTURES

THEY LEAD US THEY SOOTHE US

THEY CAN ADD FUN THEY CAN ADD GLAMOUR

The Good

THEY ARE HERE TAKE OUR DOCENT TOUR

LEDucation 10!

YOU ARE DEMYSTIFIED !Thank you so much for attending!

This concludes The American Institute of ArchitectsContinuing Education Systems Course