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#Color 2018 Illuminating Advancements in LED Lighting Implications for Organizational Change James S. Summers Vice President Just Normlicht, Inc.

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#Color2018

Illuminating Advancements in

LED Lighting

Implications for Organizational Change

James S. Summers Vice President

Just Normlicht, Inc.

Just Normlicht Worldwide manufacturer of

standardized lighting for controlled viewing and color matching environments Broad line of standard and

custom products

GL Optic (a JUST subsidiary)

Instruments and systems for quantified light measurements

From basic spectrometers to rack-mount lab equipment

Accessories extend applications, designed for accuracy, durability and ease of use

Software extends functionality, and integrates with a wide range of environments

Applications and Industries

Representative Customers

Light Matters it’s the lingua franca, our common language, of color Or not…

Light…Matters Only three factors affect color Source Object Observer

You control two of them Light is one

What is the objective? Source

Object

Observer

Producing, hopefully, the expected result

Lost in Translation To speak clearly about color, we must use a

common light language Purpose first… Internal production workflow Graphic arts – ISO 3664:2009 (D50) Materials – ISO 3668 (usually D65)

End-use (customer) environment Often undefined, poorly defined, or unknown

Typical Consumer Experience

If only I had controlled the lighting…

BRAND

Why LED Lighting? COST – in all forms Energy efficiency, carbon footprint Maintenance Toxicity Waste disposal

LEDs - in a state of flux

LEDs – fundamentally different How they make light What light they produce How light is emitted How they are “driven”

and controlled How they change

over time

Tungsten

Fluorescent

LED

LEDs – How Photoluminescence

Electroluminescence

Phosphor

Blue LED

LEDs – Efficiency Efficiency - Light vs. Heat

122 80 13 0 50 100 150

Light Output (lumens)

Energy Input

(1 watt)

LEDs – Emitted Light Narrow angle Changed by Optics, lenses Reflectors, diffusers

New lights don’t work in old fixtures

LED T8 tube lamp 1” (2.54cm) x 4’ (122cm)

LEDs – Spectrum • Described in Spectral Power

Distribution curves (SPDs)

LEDs key basic differences Efficiency Photometry – light distribution Spectral distribution and

resulting light quality Electrically Life cost of ownership So, the world is going LED…

Applications for LED Lighting What are the impacts of LED lighting? Manufacturer to consumer workflow Point of purchase/use Manufacturing workflows Purpose first… Internal production workflow Graphic arts – ISO 3664:2009 (D50) Materials – ISO 3668 (usually D65)

End-use (customer) environment Often undefined, poorly defined, or unknown

LEDs Equality? All LEDs are not created equal Customer’s environment Mixed light sources Undefined light sources Poor quality sources Different (than D50)

LED Lighting with Low CRI (left) and Higher CRI (right)

LEDs Equality? All LEDs are not created equal Production environment One source of ISO

compliant LED lighting No retrofit ISO tubes Ambient LED impact

LED Lighting with Low CRI (left) and Higher CRI (right)

LEDs for Color Critical Viewing Key obstacles

Large varianaces in chip peak wavelength

Thermal change = color change

Large production tolerances

Manual selection (binning)

Comparatively small demand

Availability, Servicability

Why CCT isn’t Enough CCT (correlated color temperature) Very rough definition of the white point Imprecise Only one metric Not part of the

ISO standard

One CCT, Multiple Colors

‛System’ Tolerances Actual viewing conditions incorporate

all variables Ambient conditions Walls, surroundings Room lighting

Viewing geometry Observer height, sample angles Gloss, glare

Lighting fixture variables Mounting Tube tolerances, age and usage

Cumulative Errors Two different viewing conditions’ relative tolerance can

easily exceed recommended absolute tolerances

Tolerance for white point allows = 0.005 deviation Diameter = 0.010

Aim Point

Maximum Deviation

0.00 0.005+ 0.005-

Range >0.009

Your system

Customer’s system

Cumulative Errors Exacerbated when multiple print process/technologies,

different stocks and production locations are involved

Aim Point

Ink jet - 4 color stock with OBAs

Ink jet (8c)

Sheet-fed offset – 4 color, plus spot and varnish

Dry toner (4c)

Proof

Viewing Booth #1

Viewing Booth #2

Color Shift Due to Tube Aging

LED D50 + Low CRI LED Ambient 25% ISO 3664 compliant Ambient Light LED 5000 Kelvin CRI 82

Mixed Light

5029K; ChErr = 0,000;Mivis = 0.7; Miuv = 0.7; CRI 97.5 5071K; ChErr = 0.008; Mivis = 1.9; Miuv = 5.2; CRI 81.5

+

5037K; ChErr = 0.002; Mivis = 0.7; Miuv = 1.6; CRI 94.4

LED D50 + High CRI LED Ambient 25% ISO 3664 compliant Ambient Light LED 5000 Kelvin CRI ≥92

Mixed Light

5029K; ChErr = 0,000;Mivis = 0.7; Miuv = 0.7; CRI 97.5 4945K; ChErr = 0.002; Mivis = 1.1; Miuv = 4.2; CRI 93.4

+

5012K; ChErr = 0.001; Mivis = 0.7; Miuv = 1.4; CRI 96.7

Why LEDs for Color Critical ISO compliant viewing?

1. Better color performance Versus the standards Between different fixtures (no profile chasing) Stability over time (no lamp aging)

2. Less Total Cost of Ownership No maintenance Less waste Longer life & ‘future proof’

3. No warm-up 4. No color shift on dimming

JUST LED Timeline

2008 2010 2012 2014 2016

Development multi-spectral LED technology

LED Viewing Light

LED Luminaire

LED Calibration Source

LED moduLight & proofStation

LED Production Lighting

LED Hybrid Luminaire

2018

Full LED Product Family

LED vs. Fluorescent Performance Chromaticity Error CRI Ra

R1-8 min.

MI(vis) < 1.0 MI(uv) < 1.5

FL LED ≤0.005± ≤0.000 >93 ≥97.5 ≥XX ≥96.5 <1.0 ≤0.5 <1.5 ≤0.6

ROI of LED for ISO Viewing

Annual Hours Usage 6,000 Tube Replacement Frequency 2,500 Tube Replacement Cost $ 156 Replacements per Year 2.4 Burdened Labor Rate $ 90 Replacement Labor Hrs. 1 Tube Overhead per Year $ 50 LED Rate Life 50,000 Depreciation Period 7 years

JUST LED moduLight Family Desktop to Harmony Rooms Exceeds ISO and Fogra standards 2017 InterTech award

JUST LED moduLight Family Both D50 and D65 illuminants Full digital dimming – no color shifts No change over time Instant on – no warm-up Switchable UV content ≥ 50,000 hr. life Glare and reflection free

Where LED Lighting is Heading Ubiquity – incandescent and fluorescent

lighting will be illegal Performance will improve More lumens per watt Better light quality More choices

Integrated, connected, ‛smart’

Thank you for the opportunity to share the journey!