LRC Releases New Version of Circadian Stimulus Calculator with Expanded Functionality

The Lighting Research Center has released a new version of its free, open-access circadian stimulus (CS) calculator with more robust and flexible functionality to help lighting professionals select light sources and light levels that will increase the potential for circadian-effective light exposure in architectural spaces.

The new calculator provides additional functions not included in the original version, including the ability to calculate CS levels in rooms with multiple light sources; and combine pre-loaded SPDs from the calculator dropdown and user-supplied SPDs to provide one CS measurement and a single relative SPD.

Lighting professionals can use the CS calculator to compare the effectiveness of various light sources for stimulating the circadian system. The CS calculator utilizes the CS metric, a measure of how one-hour exposure to a light source of a certain SPD and light level stimulates the human circadian system, as measured by acute melatonin suppression.

Learn more about the CS metric and access the calculator

Changing Scene

IES Edmonton: Architecture-Lighting Design Seminar

On April 19, 2018, a lunch presentation by lighting designer Chip Israel will use case studies to evaluate various architecture and interior spaces and show how to use lighting to enhance the overall effect and mood…

Changing Scene

Michelle Zeiger Named Vice President of Sales and Marketing with BeLuce Canada

Novmeber 21, 2022 With the recent retirement of Bruno Ardito, BeLuce Canada Inc. is pleased to announce the promotion of Michelle Zeiger as the new Vice-President of Sales and Marketing. Michelle has been with BeLuce (formerly Beghelli) for over 11 years and has over 25 years of experience within the electrical industry. Michelle will report…

Changing Scene

Lind Equipment Rebrands Their UVC LED System

Lind Equipment renames their Lind Apollo UVC LED System to Victory UVC LED Decontamination System. This rebrand comes not long after the announcement that Lind’s UVC LED technology kills at least 99.99% of SARS-CoV-2.

Changing Scene

Call for Entries: IESBC 2019 Vision Award

The Illuminating Engineering Society of British Columbia (IESBC) is now accepting lighting project submissions for their 2019 Vision Awards…

Changing Scene

Cristal Controls Appoints New Regional Manager, Ontario

As part of Cristal Controls’ plan to continue growth in central Canada, John V. Keating has assumed the role of Regional Manager, Ontario…

Changing Scene

Ascot Capital Group Acquires LumenTruss

Ascot Capital Group, the parent company of Standard Products Inc., Stanpro Lighting Systems Inc., and Aimlite Corp., has acquired a majority share of LumenTruss. Located in Montreal, Quebec, LumenTruss is a specialty manufacturer of architectural lighting products active in both Canadian and American markets.

Changing Scene

IES Edmonton: Architecture-Lighting Design Seminar

Changing Scene

Michelle Zeiger Named Vice President of Sales and Marketing with BeLuce Canada

Changing Scene

Lind Equipment Rebrands Their UVC LED System

Changing Scene

Call for Entries: IESBC 2019 Vision Award

The Illuminating Engineering Society of British Columbia (IESBC) is now accepting lighting project submissions for their 2019 Vision Awards…

Changing Scene

Cristal Controls Appoints New Regional Manager, Ontario

As part of Cristal Controls’ plan to continue growth in central Canada, John V. Keating has assumed the role of Regional Manager, Ontario…

Changing Scene

Ascot Capital Group Acquires LumenTruss

Changing Scene

IES Edmonton: Architecture-Lighting Design Seminar

Changing Scene

Michelle Zeiger Named Vice President of Sales and Marketing with BeLuce Canada

Changing Scene

Lind Equipment Rebrands Their UVC LED System

Changing Scene

Call for Entries: IESBC 2019 Vision Award

The Illuminating Engineering Society of British Columbia (IESBC) is now accepting lighting project submissions for their 2019 Vision Awards…

Changing Scene

Cristal Controls Appoints New Regional Manager, Ontario

As part of Cristal Controls’ plan to continue growth in central Canada, John V. Keating has assumed the role of Regional Manager, Ontario…

Changing Scene

Ascot Capital Group Acquires LumenTruss

Changing Scene

New Collaboration – A New Solar Lighting Manufacturer Joins Contact Delage’s Offerings

Contact Delage is excited to announce the addition of a new trusted partner to their lineup: Solvic, an innovative manufacturer specializing in solar lighting. This new partnership reflects Contact Delage’s ongoing commitment to offering sustainable, high-performance solutions tailored to real-world applications. With Solvic, they are expanding their range of autonomous solar products—perfect for lighting streets, parks,… Read More…
Mac’s II Agencies Announces Addition to Project & Specification Sales Team

Mac’s II Agencies is pleased to announce that Drazen Jerkovic will be joining their Project & Specification Sales team in the Lighting Division later this fall. With over 25 years of experience in the lighting and electrical industry, Drazen is a highly respected consultant known for his technical knowledge and deep understanding of project delivery. His recent role… Read More…

Noramco Announces Samantha Boernsen as New Regional Sales Manager, Winnipeg

July 9, 2025
Light Years Ahead: SkyView by BIOS Launches in BC with Mac’s II Agencies

July 7, 2025
Leviton Canada Announces the Appointment of Matthew Dudka as Sales Director, Western Canada

July 7, 2025
Contact Delage Announces the Creation of a Sales Coordination Team Composed of Lise Roy & Roxanne Grenier

July 7, 2025
LEDVANCE Expands Ontario Presence with New Specification Agent

June 3, 2025
Eureka Wins Three 2025 Red Dot Awards for Product Design

May 29, 2025

Design

Guidelines for Converting LED-to-LED: What Turnkey Lighting Contractors Need to Know

As turnkey lighting contractors know, the wave of LED upgrades that swept across commercial and industrial buildings over the past decade brought major improvements in energy efficiency and maintenance reduction. But many of those first-generation LED systems installed between 2015 and 2020 are now entering a phase of performance decline that creates a ripe opportunity… Read More…
Bold, Programmable Lighting Upgrade Helps Draw Visitors to Key Destination Point in Calgary

The CF Chinook Centre (more commonly known as Chinook Centre) was always destined to be a major destination point for Calgary. Opened in 1965, it is conveniently located near the city center and is only 20 minutes from Calgary International Airport. Over the years, it grew to become Calgary’s largest shopping mall with more than… Read More…

Infrastructure Lighting Fixtures: Why Scale Matters

July 10, 2025
What You Need to Consider When Choosing Data Center Lighting

July 8, 2025
Artika: 5 Advantages of Smart Lighting

July 7, 2025
The Residential Contractor’s Guide to Layering Light

July 2, 2025
How to Elevate Your Exterior Living Space with Outdoor Lighting

July 2, 2025
60-Watt vs 100-Watt Light Bulbs: Brightness & Wattage

June 26, 2025

New Products

Prolux: Lumithree PT-1016 Glass Diffuser Pendant

The PT-1016 is a glass diffuser that can be mounted in any room to provide an elegant touch. The diffuser comes in several translucent finishes to match any decor, and the hardware is available in a variety of powder-coated colours. Lumithree’s quality decorative lighting solutions offer their customers a diverse range of unique and flexible… Read More…
Magic Lite: Tri-Proof Lights

Tri-Proof Lights are a durable lighting solution that can replace traditional linear fluorescent luminaires. Tri-Proof Lights are designed for a variety of applications requiring, dust-, moisture- and impact-resistance. Suitable environments such as corridors, stairwells, warehouses, parking garages and car washes allows this versatile fixture in a variety of applications. Read More…