Forum for Illumination Research, Engineering, and Science (FIRES)

Standards Category: Measurements and Calculations
luox – A new open-access, open-source platform for spectral computations

luox – A new open-access, open-source platform for spectral computations

By Manuel Spitschan

Around 20 years ago, a new type of cell was discovered in the human retina, the fine layer of tissue at the back of our eyes that enables us to see the world in its colourful detail. These cells, the intrinsically photosensitive retinal ganglion cells (ipRGCs), are sensitive to light independent of the canonical photoreceptors, the cones and the rods.

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The Test of Time

The Test of Time

By Brian Liebel
IES Director of Standards and Research

This article is an expanded version the article found in the 50th Anniversary issue of LD+A, July 2021, providing additional background, more references, and personal insights by the author.

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Figure 4 – Visual efficiency functions.

Quantifying Light Pollution Sources: The Quintic Root of Hipparchus

By Ian Ashdown, Senior Scientist
SunTracker Technologies Ltd.

Nighttime light pollution is sadly familiar to all of us. While our grandparents and great-grandparents may talk fondly of seeing the Milky Way in their youth, with thousands of stars scattered across the dark summer sky, we are mostly content with seeing a few dozen stars through the never-ending dusk of urban and suburban skies.

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M/P Figure 1

M/P ratios – Can we agree on how to calculate them?

By Naomi J. Miller, PNNL; Anne (Lia) Irvin, PNNL

The candela and the lumen are units based on one form of human spectral sensitivity, characterized with the weighting function known as V(λ), which was derived under a very narrow set of experimental conditions by multiple researchers, and the results awkwardly combined in 1924 to produce the familiar photopic response function [Sharpe and others, 2005].

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Figure 2.

Focusing on Daylight Spectra

By Mehlika Inanici, Ph.D.

The dynamic intensity and spectra of daylight inform human beings about the passage of time and weather, produce the best color rendition, regulate circadian rhythms in all living beings, and facilitate sustainable lighting practices.

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Figure 1.

Simplifying Melanopsin Metrology

By Sam Berman, HFIES
Senior Scientist Emeritus Lawrence Berkeley National Laboratory
and
Robert Clear, FIES
Staff Scientist (Retired) Lawrence Berkeley National Laboratory

During the past two decades, the lighting community has come to recognize that retinal photoreception extends beyond rods and cones, and includes a small number of intrinsically photosensitive retinal ganglion cells (ipRGCs) with their own unique spectral sensitivity. In this dialogue we provide a simple method for incorporating the metrological consequences of this sensitivity into lighting practice.

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An Intuitive Metric for Lumen Maintenance

An Intuitive Metric for Lumen Maintenance

By Eric Bretschneider

For better or for worse, the lighting industry commonly associates the lifetime of LEDs and LED-based lighting products with L70 – the amount of time for the lumen maintenance of an LED-based device to reach 70% of its initial value. Admittedly, the failure of other components, particularly those that provide power to LEDs, are more likely to determine the overall lifetime of an LED-based component or luminaire. However, only lumen maintenance is considered here.

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The Lighting Design Objectives (LiDOs) Procedure

By Christopher Cuttle, MA, PhD, FCIBSE, FIESANZ, FIESNA, FSLL

This procedure is based on the concept that there is real advantage to be gained from changing the illumination metrics used for specifying, measuring and predicting lighting applications so that they relate to people’s responses to visible effects of lighting in indoor applications.

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EP Zoom Platinum Sponsor - $20,000

What’s in it for you?

  •    Sponsor 5 Students/Emerging Professionals and the EP Day presentation platform
  •    Visibility and awareness before breakout rooms and throughout the event
  •    Opportunity to present a live or prerecorded personal closing message (15 seconds-1 minute duration)
  •    Shout-outs throughout the event
  •    Recognition as an EP Program Sponsor on all event communication
  •    Recognition on the IES Annual Conference homepage
  •    Recognition on the IES Annual Conference Emerging Professional homepage

EP Sponsorship Opportunities

Sponsor students and emerging professionals to attend the virtual Annual Conference event or the in-person Street & Area Lighting Conference. Student and EP recipients selected by Emerging Professional Committee.

EP Breakout Room Sponsor - $8,000

What do you get?

  •    Sponsor breakout room for live engagement and networking during EP Day
  •    Opportunity to present a live or prerecorded personal welcome message (15 seconds-1 minute duration)
  •    Visibility and awareness at the start of the schedule
  •    Personalized zoom backgrounds for moderators
  •    Recognition as an EP Program Sponsor on all event communication
  •    Recognition on the IES Annual Conference homepage
  •    Recognition on the IES Annual Conference Emerging Professional homepage
  •    Opportunity to provide personalized swag to attendees and moderators

EP Game Sponsor - $5,000

What are the benefits?

  •    Sponsor live interactive game session(s) during EP Day
  •    Ability to use your personal game hosting platform for the game session (IES can provide platform if needed)
  •    Be a Game Co-Host
  •    Opportunity to provide personalized swag or selection of IES publications as prize options

1 X Event Sponsor - $5,000

What’s in it for you?

  •    Visibility and awareness before breakout rooms and throughout the event – graphic image of logo
  •    Opportunity to submit a prerecorded personal opening/closing message (15 seconds-1 minute duration)
  •    Shout-outs throughout the event
  •    Recognition as a Leadership Forum Sponsor on all event communication
  •    Recognition on the Leadership Forum homepage

6 X Breakout Room Sponsor - $1,000 – (1 for each of 6 Breakout Rooms)

What do you get?

  •    Visibility and awareness at the start of the schedule – [verbal announcement/thank you]
  •    Personalized Zoom background for moderators – [moderators must use if provided by sponsor]
  •    Recognition as a Leadership Forum Sponsor on all event communication
  •    Recognition on the Leadership Forum homepage

3 X Leadership Forum Kahoot Game Sponsor - $500

What are the benefits?

  •    Sponsor live interactive Kahoot game session(s) during LF Day
  •    Be a Game Co-Host (optional)
  •    Recognition as a Leadership Forum Sponsor on all event communication
  •    Recognition on the Leadership Forum homepage

1x Gold Sponsor- $25,000

  •    Recognition as a Gold Sponsor in a fourth (1/4) page placement for 2 months in LD+A magazine
  •    Recognition as Gold sponsor on event app and all event communication, excluding Registration and Daily Digest communications
  •    Full registration for two (2) to the Annual Conference
  •    Company logo and hyperlink placed on exhibitor page within event app

2x Keynote Sponsor- $10,000

  •    2-3 minute Opening
  •    Introduce keynote speaker
  •    Company logo and hyperlink placed on exhibitor page within event app

5x Virtual Break Sponsor - $6,000

  •    Provided graphic visible during break duration
  •    Recognition as Virtual Break sponsor on event app and all event communications, excluding Registration and Daily Digest communications
  •    Full Registration for one (1) to the Annual Conference

1x Opening Session Sponsor- $5,000

  •    90-second video prior to session start
  •    Company logo and hyperlink placed on exhibitor page within event app

1x Closing Session Sponsor- $5,000

  •    90-second video prior to session start
  •    Company logo and hyperlink placed on exhibitor page within event app

1x Society Update Sponsor - $5,000

  •    Recognition as Society Update sponsor throughout web
  •    Recognition as Society Update sponsor on event app and all event communication, excluding Registration and Daily Digest communications
  •    Full registration for one (1) to attend the 2021 Annual Conference
  •    90-second video prior to session start

1x Registration Sponsor - $5,000

  •    Visibility as sole sponsor on the registration page and in all registration focused communications
  •    Company logo and hyperlink placed on exhibitor page within event app

1x Daily Digest Sponsor - $5,000

  •    Visibility as sole sponsor in all Daily Digest focused communications
  •    Recognition on event webpage and communications as Daily Digest Sponsor

10x Event App Exhibitor Page Sponsor - $1,000

  •    Company logo and hyperlink placed on exhibitor page within event app