March 5 & 6, 2015

New strategies for applying light:

integrating variable white lighting products

Ann Schiffers – USAI Lighting

Senior VP of Specification Sales (MFA, BS, IES)

March 5 & 6, 2015

Brief review of light and color Definition of tunable white light Review of how light interacts with the circadian system

How new information will change the way you design Applications for tunable white light in architectural lighting

practice Example project from special guest

1. What is tunable white light and how is it tuned? 2. Different technologies used to achieve and create tunable white light3. Importance behind coordinating dimming, building control systems, and tunable white light fixtures4. Applications in which tunable white light has been used5. New opportunities for using tunable light that may help you

What do these places have in common?

Catering to needs of patients and staff alike

Assist and promote comfort and recovery

Enhance visual acuity for medical professionals

Welcome visitors

Designed to promote appreciation of fine art

Visual presentation must be of the highest caliber

Colors rendered accurately Light levels high enough for

viewing, but below materials’ damage threshold

Have no UV or IR

March 5 & 6, 2015

380nm 780nm

IR

Radar

Radio

Gamma

UV-A

UV-B

UV-C

Electromagnetic energy

a physical, scientific definition

March 5 & 6, 2015

somewhat subjective, a physiological perception White comes in many

different shades and tones

“we know it when we see it”

RGB sources cover this whole color space (including non-white)

WHITE LIGHT

March 5 & 6, 2015

Ceramic Metal HalideHigh pressure sodium

Incandescent

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measured in the thermal scale Kelvin

WHITE LIGHT

March 5 & 6, 2015

Uses a lot of energy allowance

Requires minimum 3 control zones

Fixture footprint on the larger side

Linear form factor

Socket shadow apparent

Color mixing is coarse at best

Light levels not very high (OK for ambient)

Curved applications difficult

Solid-state LED-based technology

Uses arrays of red, green, and blue LEDs

Different form factors available

Smaller footprint

Requires digital controls and communications

DMX controllers can be complicated

Color mixing must be commissioned

3 or 4 channels required at a minimum

Light levels of red, green, and blue adjusted independently

Range is large: “white” can be hard to find

“white” is often not uniform

Controls are simple and intuitive

Only two control channels are required: one for color temperature, one for intensity

Color mixing is handled on the fixture end

Uses all white LEDs Allows light to shift CCT

while always remaining “white”

Smooth tunable range from 2200K – 6000K (some are less, from 2700K-4000K)

March 5 & 6, 2015

It’s good for us

March 5 & 6, 2015

All living things have a Circadian Rhythm

The circadian system regulates our biological cycles and functions

Light is the primary stimulus for the human body clock

we need light AND dark at the right times for our health

March 5 & 6, 2015

The back of the eye is filled with nerves and photoreceptors

Among the rods and cones was discovered a new photoreceptor

Intrinsically photoreceptive retinal ganglion cell (ipRGC) discovered in 2001

March 5 & 6, 2015

ipRGCs in the eye connect directly to the brain

This cell DOES NOT contribute to the visual system

This cell DOES contribute to human health and wellbeing

March 5 & 6, 2015

ipRGCs respond to light in a different way than other photoreceptors in the eye

ipRGCs are most responsive to 460nm (blue) light

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Daytime visual system is most responsive to green

Nighttime vision (rods) is blue-shifted in comparison

Circadian system responds differently to light than either

March 5 & 6, 2015

ipRGCs in the eye connect directly to the suprachiasmatic nucleus

SCN is the main pacemaker in the brain

Light acts as the primary stimulus for the brain’s clock (SCN)

March 5 & 6, 2015

SCN tells the rest of the body what to do: it controls

Pineal gland – sleep / wake

Pituitary – growth, blood pressure, reproduction

Adrenal gland – stress Thyroid - metabolism

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Brain controls production of hormone melatonin Melatonin helps with cell repair Reduced melatonin linked with

Diabetes Heart disease Cancer Obesity

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We evolved with two light sources: night and day Today we live with artificial light sources Melatonin production is affected by our current lifestyle

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Dr. George BrainardThomas Jefferson

University

Dr. Mariana FigueiroLighting Research

Center, RPI

Dr. Steven LockleyHarvard University

March 5 & 6, 2015

some applications where it has been used effectively

March 5 & 6, 2015

Where couldn’t we use it?

March 5 & 6, 2015

Seattle Mariners clubhouse lighting project Airbus Industries Mockup Benefits for students and office workers Lighting and Alzheimer's School for the Visually Impaired Auction House Optimization A morbid tale

March 5 & 6, 2015

Home team locker room Mariners wanted 5000 Kelvin before the baseball game, and

wanted 2700 Kelvin after the game. Used new tunable white technology –

2x2s.

March 5 & 6, 2015

“Whether due to jet lag or some other aetiology, our finds are of practical importance for the west coast teams, because they face the double handicap of playing away games after eastward trips. The result is that these teams are giving up more than one additional run in every game played after such travel.”

March 5 & 6, 2015

Airbus completed a mock up last year that was similar to a flight simulator. It was complete with seating, noise, vibration, etc. They installed tunable white LED to test the reduction effect on jet lag in intercontinental travel.

March 5 & 6, 2015

High CCT in morning (help wake up)

3500 to 5000K during normal work

Increased light levels for tests Low CCT and light level after

recess Studies conducted with

fluorescent, but will be much better with LED

March 5 & 6, 2015

Daylight is the ultimate tunable white light source

Daylight = better entrainment Studies show a correlation

between daylight and workplace satisfaction

Researchers and designers recreate daylight with tunable white light sources

March 5 & 6, 2015

Assisted living facilities lighting studies use high CCT, high light levels during day, low CCT and lower light levels in evenings

Results = reduced daytime agitation, reduced daytime napping, improved mood and socialization, increased nighttime sleep quality and duration

March 5 & 6, 2015

Visually impaired students use vellum sheet used to increase color contrast – but individual students’ needs vary

Tunable lighting allows students to customize contrast for individual needs for optimal task performance and visual acuity

March 5 & 6, 2015

Everything must be right for a multi-billion dollar art sale

High profile auction houses customize tunable sources to recreate the ideal light in which to view artwork – recreating the light that was used at time of work’s creation

March 5 & 6, 2015

Funeral homes ask for tunable white technology to provide the best possible viewing conditions for open-casket funerals

Able to customize the tunable light source for different skin tones

March 5 & 6, 2015

Jeanmarie Zimmerman AIA, ACHA, CCIDC, EDAC

Puchlick Design AssociatesAssociate / Design Director

Providence Holy Cross Palliative Care Canterbury Continued Care Retirement Community (CCRC)

Household

HYPOTHESIS A | Because the circadian clock is intertwined with most cellular metabolic processes and it is affected by organism aging, augmenting increased daylight openings with programmable clock “scenes” via “tunable” RGB fortified Tunable White Lights will improve resident outcomes.

HYPOTHESIS B | Integration of RGB Fortified Tunable White LED light programmed to Calendar year “Scenes” will improve Resident Outcomes.

Reasons for Using Tunable White Light

Reduction in sleep aide medications. Normalization of Bed Times. Regulated appetite. Regulated Melatonin levels. Reduction in Cardiac medications and incidences associated with

sleep irregularity. Increase in Resident engagement in spaces with Tunable White

Light augmenting natural Daylight.

Goals For Using Tunable White Light

Clinical Outcome Analytics Sleep Medications Data Resident Meal Data Patient Vitals Data

Metrics for Measuring Design Effectiveness

Tunable white light fixtures used in lounge and corridors

Tunable white light fixtures used in resident rooms and kitchens

Tunable white light fixtures used in spa