An Introduction to The IES Lighting Handbook
Transcript of An Introduction to The IES Lighting Handbook
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An Introduction to The IES Lighting Handbook 10th Edition
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An Introduction to the New IES Lighting Handbook
by David L. DiLaura
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Lighting Handbook Editors
David L. DiLaura Principal Illuminating Engineer
Acuity Brands Lighting
Gary R. Steffy Principal
Gary Steffy Lighting Design
Richard G. Mistrick Associate Professor of Architectural Engineering
Pennsylvania State University
Kevin W. Houser Associate Professor of Architectural Engineering
Pennsylvania State University
(c) Kevin Beswick
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Brief History of IES Handbooks
Why a New Book?
Initial Development; Setting, Scope, and Content
Characteristics and Format of the New Handbook
Highlights of Significant Changes
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A bit of Lighting Handbook History
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The 1st Handbook
• Developed during 1942-1947
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The 1st Handbook
• Handbook Committee as overseer
• Individual contributors
• Produced by IES editorial staff
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Beginning with the 8th Handbook
• Independent contractor and editor
• Committee authorship of chapters
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Changes in the Lighting Industry
• Rapid advance of solid-state lighting
• Rise of environmental influences
• Ever-diminishing power allotments for lighting
Changes affecting the IES
• Increased competition for influence and authority
• New generation of members from different backgrounds
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A New Lighting Handbook: Setting the Stage
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Handbook Task Force
• Members:
–Maninder Dhaliwal
–Kevin Flynn (chair)
–Stefan Graf
–Rita Harrold
–Matt Latchford
–Alan L. Lewis
–Paul Torcellini
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Handbook Task Force
• Recommendations regarding content
• Recommendations regarding format
• Marketing
• Editor/Publisher
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• Contractor
–David L. DiLaura, LC, FIES, AAAS, DSc(Hon)
• Subcontractors
–Gary R. Steffy, LC, FIALD, AIAMI(Hon)
–Richard G. Mistrick, PhD, FIES, PE
–Kevin W. Houser, PhD, PE, LC, LEED
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Defining the New Lighting Handbook
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Goals
• Direct IES knowledge outward
• Influence architectural lighting as it is practiced
• Make specific recommendations
Audience
• IES members
• Broad range of lighting practitioners
• Architects, Planners, Designers, Engineers, Distributors, Contractors
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Technology Content Update
• Solid-State lighting
• Visual performance and mesopic adaptation
• Lighting Controls
Form and Format
• Sustainable and revisable
• References and active interlinks
• Deliverable in several different media
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Learning from the Past, Adjusting to the Present, and Predicting
the Future: the Form and Content of the New Lighting Handbook
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Fundamentals Section with a Tight Focus
Lighting Design Issues Gathered into a Single Section
Highlighted Presence of Daylighting and Sustainability
New Illuminance Recommendations
Redefined Purpose and Intent of Application Chapters
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Content of the New Lighting Handbook
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Three Sections:
Framework
• Background to lighting
• Supporting information
Design
• Principles of Lighting Design
• Components of Lighting Design
• An Approach to Lighting Design
Applications
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Framework
• Physics and Optics of Radiant Power
• Vision: Eye and Brain
• Photobiology and Nonvisual Effects of Optical Radiation
• Perceptions and Performance P
• Concepts and Language of Lighting P
• Color P
• Light Source: Technical Characteristics P
• Luminaires: Forms and Optics
• Measure of Light: Photometry
• Calculation of Light and its Effect
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Design
• Lighting Design in the Building Design Process P
• Components of Lighting Design P
• Light Sources: Application Considerations P
• Designing Daylighting P
• Designing Electric Lighting P
• Lighting Controls P
• Energy Management
• Economics
• Sustainability P
• Contract Documents P
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Applications P
• Lighting for Art
• Lighting for Common Applications
• Lighting for Courts and Correctional Facilities
• Lighting for Education
• Lighting for Emergency, Safety, and Security
• Lighting for Exteriors
• Lighting for Health Care
• Lighting for Hospitality and Entertainment
• Lighting for Libraries
• Lighting for Manufacturing
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Applications P
• Lighting for Miscellaneous Applications
• Lighting for Offices
• Lighting for Residences
• Lighting for Retail
• Lighting for Sports and Recreation
• Lighting for Transport
• Lighting for Worship
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Generating the Content
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Editors Were Responsible for all Text
Topic and Sentence Outlines
• Four editors generated topic outlines for all chapters
Topic Outline Approval
• 30 External experts
• Revision and rewriting outlines
• Handbook Task Force review
• Board of Directors and TRC reviewed and approved
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Chapter Production
• One of 4 editors assigned as lead author
• Full access to all comments and record of changes
Writing the Chapters
• Text drafting by lead author
• 4 Editors’ internal review, and subsequent rewriting
• External experts’ review, and subsequent rewriting
• Final review and rewrite by lead author
• IES Board of Directors and TRC review and approval
Development of Graphics
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Formatting Changes and New Features
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Formatting
• Printed Version
–Full color throughout
–1270 pages
• PDF Version
–Fully searchable
–12,000+ hyperlinks
–96 Mbytes
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Local Table of Contents
Section Numbering
Definitions, Details
Quick Locator Tabs
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Resource Pointers
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Custom Graphics to
Help Clarify and Abbreviate
the Text
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Custom Graphics to
Help Clarify and Abbreviate
the Text
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Custom Graphics to
Clarify and Abbreviate
the Text
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Custom Graphics to
Clarify and Abbreviate
the Text
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Framework
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Design
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Principles and Examples of Design Well Illustrated with
Tables and Photographs
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Hundreds of Color
Photographs Demonstrate
Design Principles and Show
Examples of Lighting
Applications. All Linked to
Explanatory Text and
Tables.
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Applications
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Significant Changes in the Content of the New Lighting Handbook
Light Source Information: Data and Application
Daylighting
Tightly-Focused Application Chapters
New Illuminance Determination Procedure
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Significant Changes in the Content of the New Lighting Handbook
Light Source Information: Data and Application
Daylighting
Tightly-Focused Application Chapters
New Illuminance Determination Procedure
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Two Chapters Devoted to Sources
• Light Sources: Technical Characteristics
• Electric Light Sources: Application Considerations
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Revision of Light Sources Technical Information
• Characteristics of
–Sunlight and Skylight
–Filament lamps
–Fluorescent lamps
–HID
–Sold-State Sources
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Revision of Light Sources Technical Information
• In each case:
–Principles of operation
–Construction
–Spectrum
–Operating characteristics
–Nomenclature
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Source Application Considerations and Guidance
• Efficacy, Life, and Lumen Maintenance
• Auxiliary Equipment
• Starting, Restriking, and Dimming
• Color
• Geometry, Distribution
• Sustainability, Legislation, Standards, Cost of Light
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Significant Changes in the Content of the New Lighting Handbook
Light Source Information, Data, and Application
Daylighting
Tightly-Focused Application Chapters
New Illuminance Determination Procedure
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Extensive Material on Daylighting
• Daylighting design process
• Programming
• Daylighting design parameters and tools
–Building orientation
–Glazing materials
–Daylight delivery systems
–Shading devices
• Daylight assessments
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Principles and Methods Show with Detailed Examples
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Significant Changes in the Content of the New Lighting Handbook
Light Source Information, Data, and Application
Daylighting
Tightly-Focused Application Chapters
New Illuminance Determination Procedure
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Separated from Committee Recommended Practice (RPs)
• Limited Scope
• Reference to applicable general principles in design chapters
• Analytic Recommendations
–Illuminances
–Luminances
–Ratios and Uniformities
–Maxima and Minima
–Veiling Reflections
–Daylighting Opportunities
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Every Application
Chapter Has a Table of
Contents, An
Introduction to put the
Application in Context,
and References to
Material Common to all
Applications.
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Every Application
Chapter Begins with a
Checklist of Design
Issues, Keyed to
Relevant Sections of the
Handbook
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Significant Changes in the Content of the New Lighting Handbook
Light Source Information, Data, and Application
Daylighting
Tightly-Focused Application Chapters
New Illuminance Determination Procedure
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New Illuminance Determination Procedure
• Need
–Properly manage ever diminishing power allotments
–Augment existing recommendations with more modes
• Uniformities
• Ratios
• Maxima and Minima
–Assert and maintain authority over recommendations
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New Illuminance Determination Procedure
• Required Characteristics
–Fine granularity of ranges or steps
–Account for
• Task difficulty and importance
• Age of observer
• Environment
• Mesopic Adaptation
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New Illuminance Determination Procedure: Ranges
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New Illuminance Determination Procedure: Ranges
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New Illuminance Determination Procedure: Ranges
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New Illuminance Determination Procedure: Age
Retina
Pupil
Lens
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New Illuminance Determination Procedure: Age
2.35 Decrease in Pupil Area
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New Illuminance Determination Procedure: Age
2.15 Loss in Light
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New Illuminance Determination Procedure: Age
2.35 Decrease in Pupil Area x
2.15 Loss in Light = Transmittance
5 times Less Light On the Retina
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Conventional or legacy
recommendations are for
middle-age observers.
Old observers require twice
the illuminance
Young observers require
one-half the illuminance
New Illuminance Determination Procedure: Age
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New Illuminance Determination Procedure: Environment
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New Illuminance Determination Procedure: Environment
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New Illuminance Determination Procedure: Environment
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New Illuminance Determination Procedure: Environment
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New Illuminance Determination Procedure: Environment
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Legacy Recommendations
• Old tasks, previous two handbooks, existing RPs
New Recommendations
• New tasks
• New environmental constraints
–Light trespass
–Dark sky
–Lighting Zones
–Activity levels
Final Application Committee Approval
New Illuminance Determination Procedure: Development
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Specific Recommendations
• Horizontal illuminance
• Vertical illuminance
• Illuminance location
• Uniformity ratios
• Maxima and Minima
• Recommendations as to “Gauge” (Max, Min, Ave)
• Flags for daylighting opportunities
• Flags to indicate where the designer should establish coverage
• Cautions for veiling reflections
New Illuminance Determination Procedure: Specification
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New Illuminance Determination Procedure: Specification
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New Illuminance Determination Procedure: Specification
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New Illuminance Determination Procedure: Adaptation
• Research in Visual Performance at Mesopic Adaptation under illuminances of different spectra
–Realistic and simulated tasks
–Reaction time measurements
–Mesopic adaptation states
–Various spectra
• Photometry Based on Intermediate (mesopic) v( ) Functions Predicts Reaction Times
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New Illuminance Determination Procedure: Adaptation
Scotopic Adaptation
Luminance < 0.001 cd/m2
Mesopic Adaptations 0.001 cd/m2 < Luminance < 10 cd/m2
Photopic Adaptation
Luminance > 10 cd/m2
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New Illuminance Determination Procedure: Adaptation
• Adaptation State
–Expressed as a Photopic Luminance
• Spectrum
–Expressed as a Ratio of Scotopic to Photopic Lumens
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New Illuminance Determination Procedure: Adaptation
• The New Handbook recommends the Average Photopic Luminance in the Field of View be used to Determine the State of Adaptation
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New Illuminance Determination Procedure: Adaptation
• The New Handbook recommends that the Spectrum be specified by its S/P
• S/P: Ratio of Scotopic to Photopic Lumens
–A single number that indicates the relative amount of
short wavelength optical radiation in a spectrum S( )
Scotopic Lumens 1700 S( ) v’( )d
–S/P = =
Photopic Lumens 683 S( ) v( )d
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New Illuminance Determination Procedure: Adaptation
• The New Handbook recommends the use of Mesopic Multipliers to Scale Photopic Recommended Illuminances
–Multipliers depend on adaptation state
–Multipliers depend on spectrum, as expressed by S/P
–Multipliers provide the transformation (scaling) from
mesopic to photopic photometry
–All analyses uses only photopic photometry
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Luminance (0.03)
Source S/P (1.81)
Recommendation
multiplier (0.70)
New Illuminance Determination Procedure: Adaptation
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New Illuminance Determination Procedure: Adaptation
• Mesopic Multipliers can be used to:
–Determine how the State of Adaptation and
–The Spectrum of the Proposed Lighting System
–Modify a Photopic Recommended Illuminance
• Mesopic Multipliers should NOT be used to modify Photopic Recommended Illuminances in Applications where Vehicular Traffic Moves at Speeds > 40 kph (25 mph)
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Determining a Mesopic Multiplier Requires Estimating the
Adaptation Luminance
The Average Luminance in the Field of View can be Used as
the Adaptation Luminance.
New Illuminance Determination Procedure: Adaptation
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Recall that if a surface is diffusely reflective with a
reflectance of ρ and enjoys an average illuminance of E,
then its average luminance L is:
If the illuminance is in lux, the luminance will be
candela/m2
L E
New Illuminance Determination Procedure: Adaptation
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If Other Information is not Available, it is Reasonable to
Assume that:
–The photopic illuminance recommendation, Erec, will
be produced by a proposed lighting system
–Thus, the average surface illuminance will be the
recommended photopic illuminance, Erec
–The average surface luminance will be
recL E
New Illuminance Determination Procedure: Adaptation
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•The Adaptation Luminance Depends on How Much of the
Field of View the Surface Fills
–A parking garage floor that fills ½ the field of view
–The other ½ of the field is assumed to be the dark sky
with a luminance of essentially zero
–This would produce an adaptation luminance, La, of
1 1
2 2a recL L E
New Illuminance Determination Procedure: Adaptation
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•For Multiple Surfaces, the Average Luminance Depends
on the Luminance and Apparent Size of Each
–The full field of view is 5 steradians in solid angle
–If, for example, there are 3 surfaces with luminances
L1, L2, and L3, and
– 1 , 2 , 3 are the solid angles subtended to the
observer by the surfaces,
–then the adaptation luminance, La, is
1 1 2 2 3 3
5a
L L LL
New Illuminance Determination Procedure: Adaptation
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•Most of us will probably let Lighting Calculation Software
make these calculations for us
New Illuminance Determination Procedure: Adaptation
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Summary
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New, 10th Edition of the IES Lighting Handbook
–Designed and Produced for the Widest Possible
Audience
–Printed and PDF Formats
–New, Focused Application Chapters
–Flexible, Sustainable, Illuminance Recommendations
–Extensive Daylighting, Sustainability, and Lighting
Control Information
–Updated Electric Light Source Information
–The Most Useful and Authoritative Lighting Reference
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IES Lighting Handbook 10th Edition
http://www.ies.org/handbook
http://www.ies.org/handbook
Editors: David L DiLaura Kevin W Houser Richard G Mistrick Gary R Steffy
Publisher: William Hanley Technical Direction: Rita Harrold Special Thanks To: IES Board of Directors Technical Review Council Application Committees
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